Abrégé

Provided in the present application is a photovoltaic energy storage system, comprising an inverter and an energy storage apparatus. The inverter comprises a direct-current conversion circuit, a direct-current bus, an inverter circuit and a switch assembly, wherein the switch assembly comprises a first end, a second end and a third end, the first end and the third end each being used for being connected between a negative electrode of a photovoltaic module and a negative electrode of the direct-current bus, and the second end being connected to a positive electrode of the direct-current bus; the switch assembly is used for controlling the disconnection between a negative input end of the direct-current conversion circuit and the positive electrode of the direct-current bus and the connection between the negative input end of the direct-current conversion circuit and the negative electrode of the direct-current bus; or the switch assembly is used for controlling the connection between the negative input end of the direct-current conversion circuit and the positive electrode of the direct-current bus and the disconnection between the negative input end of the direct-current conversion circuit and the negative electrode of the direct-current bus. The technical solution can reduce the complexity of the photovoltaic energy storage system and the number of devices, thereby further lowering costs.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion

Abrégé

An on-board charger having a load power adaptation function, a control method, and an electric vehicle. The on-board charger (10) comprises a power conversion circuit (11) and a control circuit (13), wherein the power conversion circuit (11) is used for receiving a first direct current and converting the first direct current into a first alternating current, so as to supply power to a load (50); and in response to the current value of the first alternating current being greater than a preset current value, the control circuit (13) is used for controlling the power conversion circuit (11) to reduce the current value of the first alternating current, or in response to the output power of the power conversion circuit (11) being greater than a preset power value during the process of the power conversion circuit (11) outputting the first alternating current, the control circuit (13) is used for controlling the power conversion circuit (11) to reduce the current value of the first alternating current. During the process of the on-board charger (10) supplying power to the outside, the operation power of the load (50) can be reduced when the power of the load (50) is excessively high, and thus the load (50) capacity of the on-board charger (10) can be improved.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H02J 7/10 - Régulation du courant ou de la tension de charge utilisant des tubes à décharge ou des dispositifs à semi-conducteurs utilisant uniquement des dispositifs à semi-conducteurs
• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02M 7/797 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif avec possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• B60L 53/22 - Détails de structure ou aménagements des convertisseurs de charge spécialement adaptés pour recharger des véhicules électriques
• B60L 1/00 - Fourniture de l'énergie électrique à l'équipement auxiliaire des véhicules à traction électrique

Abrégé

The present application provides a power conversion apparatus, comprising: N alternating current-direct current (AC-DC) conversion circuits, N input power supply lines and a detection apparatus, wherein the N AC-DC conversion circuits are connected in parallel, and the N input power supply lines are in one-to-one correspondence with N power conversion circuits. Each AC-DC conversion circuit is used for rectifying an alternating current outputted from a corresponding input power supply line and outputting a direct current. The detection apparatus comprises a first port and a second port, and the detection apparatus is used for: obtaining leakage currents of the N input power supply lines via the first port and obtaining the current or voltage of an ith input power supply line via the second port; and on the basis of the leakage currents of the N input power supply lines and the current or voltage of the ith input power supply line, determining a leakage current of the power conversion apparatus, wherein N is a positive integer, and N≥2, and 1≤i≤N. The solution can solve the problem of leakage current protection on an alternating-current input side.

Classes IPC  ?

• H02J 7/10 - Régulation du courant ou de la tension de charge utilisant des tubes à décharge ou des dispositifs à semi-conducteurs utilisant uniquement des dispositifs à semi-conducteurs
• B60L 53/31 - Colonnes de charge spécialement adaptées aux véhicules électriques
• B60L 53/62 - Surveillance et commande des stations de charge en réponse à des paramètres de charge, p. ex. courant, tension ou charge électrique
• B60L 53/66 - Transfert de données entre les stations de charge et le véhicule
• H02H 3/32 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à la différence de tensions ou de courantsCircuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un angle de déphasage entre tensions ou courants comprenant la comparaison des valeurs de tension ou de courant en des points correspondants des différents conducteurs d'un même système, p. ex. de courants dans des conducteurs d'aller et retour

Abrégé

A liquid-cooled energy storage apparatus. The liquid-cooled energy storage apparatus comprises a box body, a plurality of battery packs, and a cluster-level liquid supply pipe extending in the height direction of the box body, the plurality of battery packs being located in the box body and being stacked in the height direction of the box body. The cluster-level liquid supply pipe is provided with a plurality of liquid supply branch pipes arranged at intervals in the height direction. Any one of the liquid supply branch pipes is used to place the cluster-level liquid supply pipe in communication with a liquid inlet of a liquid cooling plate of one battery pack among the plurality of battery packs. In the height direction, the position at which the liquid inlet of the liquid cooling plate is located is higher than the position at which a junction between the liquid supply branch pipe and the cluster-level liquid supply pipe is located. In the solution, due to the fact that the position at which the liquid inlet of the liquid cooling plate is located is higher in the height direction than the position at which the junction between the liquid supply branch pipe and the cluster-level liquid supply pipe is located, when cooling liquid in the liquid-cooled energy storage apparatus is replaced, the cooling liquid of the liquid cooling plate in the battery pack can be discharged from the liquid inlet of the liquid cooling plate into the cluster-level liquid supply pipe by using the gravity of the cooling liquid, so that the cooling liquid of the liquid cooling plate in the battery pack can be fully discharged and the liquid exchange ratio of the liquid-cooled energy storage apparatus is improved.

Classes IPC  ?

• H01M 10/613 - Refroidissement ou maintien du froid

Abrégé

Provided in the present application is a photovoltaic energy storage system, comprising: an inverter, an energy storage device and a voltage compensation assembly. The inverter comprises a direct-current conversion circuit, a direct-current bus, an inverter circuit and a first switch, wherein a positive input end of the direct-current conversion circuit is used for connecting to a positive electrode of a photovoltaic assembly, and a negative input end of the direct-current conversion circuit is used for connecting to a negative electrode of the photovoltaic assembly; and the first switch is disposed between a connection point of the voltage compensation assembly and the negative input end of the direct-current conversion circuit and a negative electrode of the direct-current bus, and is used for controlling connection and disconnection between the voltage compensation assembly and the negative electrode of the direct-current bus. The photovoltaic energy storage system further comprises a controller, which is used for, when an output voltage and/or an output current of the photovoltaic assembly is less than or equal to a threshold value, controlling the first switch to be disconnected and controlling the voltage compensation assembly to operate, so that the voltage of the negative electrode of the photovoltaic assembly relative to the ground is raised to a zero voltage or a positive voltage. According to the solution, PID compensation can be carried out on a photovoltaic assembly at night, so as to solve the PID problem of the photovoltaic assembly.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion

Abrégé

The present application provides a disc-type hybrid powertrain and an electric vehicle. The disc-type hybrid powertrain is configured to be driven by an engine of an electric vehicle to generate power and is used for driving wheels of the electric vehicle to rotate. The disc-type hybrid powertrain comprises a disc-type stator, two disc-type rotors, and two rotating shafts. The two disc-type rotors are respectively arranged on two sides of a stator iron core in the axial direction. A group of stator windings are arranged on the side of the disc-type stator facing one of the disc-type rotors, and the group of stator windings and said disc-type rotor are opposite in the axial direction to form a disc-type motor; and the other group of stator windings are arranged on the side of the disc-type stator facing the other disc-type rotor, and the other group of stator windings and the other disc-type rotor are opposite in the axial direction to form the other disc-type motor. One of the two rotating shafts is configured to be transmittingly connected to the engine and drive the corresponding disc-type rotor to rotate, so as to generate power. The other rotating shaft is used for rotating along with the other disc rotor and driving the wheels.

Classes IPC  ?

• H02K 7/20 - Association structurelle à des machines dynamo-électriques auxiliaires, p. ex. à des moteurs électriques de lancement ou des excitatrices

Abrégé

Embodiments of the present application provide a power distribution apparatus, a charging device, an energy storage device, and a charging system. The power distribution apparatus comprises at least one power distribution unit, and each power distribution unit comprises at least one power supply port, a plurality of load ports, at least one connection port, and a switch matrix. Each power supply port is connected to a power module in the charging device, and each load port is connected to a load. The switch matrix is used for disconnecting or connecting any two of each power supply port, each load port, and each connection port. The at least one power distribution unit of the power distribution apparatus comprises a first power distribution unit, and one connection port of the first power distribution unit is connected to a power distribution unit of another charging device. According to the embodiments of the present application, the output power of the load ports of the power distribution apparatus can be flexibly adjusted to meet the charging demanded power of different loads.

Classes IPC  ?

• B60L 53/67 - Commande de plusieurs stations de charge

Abrégé

The present application provides an electric motor having an oil hole on each mounting surface, a power assembly and an electric vehicle. The electric motor comprises a motor housing and an end cover, the motor housing comprises a motor accommodating cavity and a housing mounting surface, the housing mounting surface comprises a housing oil outlet hole, and the housing oil outlet hole is adapted to be in communication with an internal oil channel of the motor housing. The end cover comprises an end cover mounting surface, the end cover mounting surface is used for fixing the housing mounting surface, the end cover mounting surface comprises an end cover oil inlet hole, and the end cover oil inlet hole is adapted to be in communication with the housing oil outlet hole and an internal oil channel of the end cover. In the radial direction of the electric motor, the housing mounting surface surrounds the periphery of the motor accommodating cavity. In the axial direction of the electric motor, the opening of the housing oil outlet hole faces the end cover, the opening of the end cover oil inlet hole faces the motor housing, and the projection of the housing oil outlet hole at least partially overlaps the projection of the end cover oil inlet hole. According to the present application, some cooling oil in the motor housing is distributed to the end cover by means of the housing oil outlet hole and the end cover oil inlet hole, thereby avoiding insufficient local cooling and lubrication, reducing the impact of the rotating speed of an oil pump on the cooling and lubricating effect, and improving the system reliability.

Classes IPC  ?

• H02K 5/20 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des canaux ou des conduits pour la circulation d'un agent de refroidissement
• H02K 9/19 - Dispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p. ex. de l'huile
• H02K 5/16 - Moyens de support des paliers, p. ex. supports isolants ou moyens pour ajuster les paliers dans leurs flasques

Abrégé

The present application provides a charging device. The charging device comprises a plurality of first charging cabinets, a plurality of AC-DC conversion modules, a DC bus, and a plurality of groups of charging guns, wherein each of the plurality of first charging cabinets comprises a group of DC-DC conversion modules. An input end of each of the plurality of AC-DC conversion modules is configured to be connected to an output end of a corresponding transformer, and an output end of each AC-DC conversion module and an input end of each DC-DC conversion module in one group of DC-DC conversion modules are both connected to the DC bus. Output ends of one group of DC-DC conversion modules are connected to one group of charging guns among the plurality of groups of charging guns, and each group of the plurality of groups of charging guns are configured to be connected to vehicles to be charged. By means of the present application, the requirement of a higher power level can be satisfied, and the charging utilization rate of the charging device can also be increased.

Classes IPC  ?

• B60L 53/60 - Surveillance et commande des stations de charge

Abrégé

An energy storage container (100), comprising a battery cluster, a container body (110), and a smoke gas channel (130), wherein the container body (110) comprises a rear wall (112) and a container door, the rear wall (112) and the container door are arranged in parallel, the battery cluster and the smoke gas channel (130) are arranged in the container body (110), a plurality of battery clusters are arranged in parallel, the battery clusters are in one-to-one correspondence with the smoke gas channels (130), and the snoke channel (130) is located between the battery cluster and the rear wall (112). Each smoke gas channel (130) is provided with a plurality of smoke gas inlets (131) and a smoke gas outlet (132). Each battery pack (120) is provided with a boss (123) facing the smoke gas channel (130), the boss (123) passes through a corresponding smoke gas inlet (131), and a sealing member (136) is arranged between the outer wall of the boss (123) in contact with the peripheral edge of the smoke gas inlet (131) and the smoke gas inlet (131). Each boss (123) is of a hollow structure, the boss (123) is in communication with the interior of the corresponding battery pack (120), the surface of each boss (123) located in the smoke gas channel (130) is provided with an opening, and a pressure relief valve (122) is mounted in the opening. When thermal runaway occurs to a battery pack (120) and high-temperature smoke gas is released, the pressure relief valve (122) of the battery pack (120) is opened, the battery pack (120) is in communication with the corresponding smoke gas channel (130) by means of the boss (123) and the pressure relief valves(122), the high-temperature smoke gas is directionally released into the smoke gas channel (130) to prevent thermal runaway spreading to other battery packs (120) or battery clusters, and then the high-temperature smoke gas is discharged to the outside of the container body (110) by means of the smoke gas outlet (132), thereby achieving directional smoke gas discharge of the energy storage container (100).

Classes IPC  ?

• H01M 50/358 - Passages externes d’évacuation des gaz sur le couvercle ou sur le boîtier de batterie

Abrégé

Provided in the present application are an energy storage system and a photovoltaic system. The energy storage system comprises an energy storage unit and a power conversion system, a positive electrode end of the energy storage unit being used for connecting to a positive electrode end of the power conversion system by means of a first protection unit, and a negative electrode end of the energy storage unit being used for connecting to a negative electrode end of the power conversion system by means of a second protection unit. The second protection unit comprises a switch unit and a reverse polarity protection unit which are connected in parallel. The switch unit is closed during charging or discharging of the energy storage unit, so as to enable electrical connection between the energy storage unit and power conversion system. When the switch unit is off, the reverse polarity protection unit is used for unidirectionally conducting a current flowing from the negative electrode end of the power conversion system to the negative electrode end of the energy storage unit. When the power conversion system is short-circuited, the first protection unit is off, and, when the energy storage unit is short-circuited, the switch unit is off. The energy storage system provided by the present application can, when the power conversion system or the energy storage unit has had a short-circuit fault, isolate the short-circuit fault in a timely manner, thereby preventing fault propagation.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion
• H02H 7/122 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour convertisseursCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour redresseurs pour convertisseurs ou redresseurs statiques pour onduleurs, c.-à-d. convertisseurs de courant continu en courant alternatif
• H02H 7/125 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour convertisseursCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour redresseurs pour convertisseurs ou redresseurs statiques pour redresseurs
• H02H 7/18 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour pilesCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour accumulateurs
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries

Abrégé

Provided in the present application are a powertrain with a controllable oil circuit flow, a heat exchanger and an electric vehicle. The powertrain comprises a shell, a heat exchanger, an oil pump, a temperature control valve, a first oil circuit and a second oil circuit, wherein the shell comprises a speed reducer accommodating cavity, the speed reducer accommodating cavity being configured to accommodate a gear set of a speed reducer; an inlet of the oil pump is configured to be in communication with the speed reducer accommodating cavity; and the first oil circuit and the second oil circuit are connected in parallel between an outlet of the oil pump and the speed reducer accommodating cavity. The heat exchanger is configured to cool cooling oil in the first oil circuit. The temperature control valve is configured to control the flow ratio of the first oil circuit to the second oil circuit. By using the temperature control valve and the second oil circuit to shunt and parallel the first oil circuit where the heat exchanger is located, the present application facilitates rapid low-temperature lubrication, thereby reducing oil churning loss in the gear set of the speed reducer, and improving the efficiency of the powertrain.

Classes IPC  ?

• F16H 57/04 - Caractéristiques relatives à la lubrification ou au refroidissement
• B60K 11/02 - Dispositions des ensembles de propulsion relatives au refroidissement avec liquide de refroidissement
• H02K 9/19 - Dispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p. ex. de l'huile

Abrégé

The present application provides a motor rotor of an asynchronous motor in which both ends of guide bars are skewed in a same direction, an asynchronous motor, and an electric vehicle. The motor rotor comprises a rotor core and a rotor squirrel cage. The rotor squirrel cage comprises two end rings and a plurality of guide bars. The two end rings are fixed to both ends of the rotor core in the axial direction of the motor rotor. The plurality of guide bars are fixed to the interior of the rotor core. Each guide bar comprises a first section, a second section, and a third section. The first section, the second section, and the third section are sequentially connected in the axial direction of the motor rotor. The second section is parallel to the axial direction of the motor rotor, the first section and the third section intersect with the axial direction of the motor rotor, and the first section and the third section are skewed from the second section toward a same side in the circumferential direction of the motor rotor. By means of designing the first section and the third section of each guide bar into a V-shaped structure and designing the second section for transition, the amplitude of a radial electromagnetic force can be reduced, a torsional mode excited by an axially-uneven electromagnetic force can be eliminated, the manufacturing quality of the motor rotor can be improved, and the NVH performance of an entire vehicle can be improved.

Classes IPC  ?

• H02K 17/16 - Moteurs asynchrones à induction avec des rotors à enroulement court-circuité à l'intérieur de la machine, p. ex. des rotors à cage
• H02K 1/22 - Parties tournantes du circuit magnétique

Abrégé

Provided in the present application are a current-sharing circuit for switch devices, and a power conversion circuit. A collector of each switch device is connected to a collector interface, and an emitter thereof is connected to an emitter interface; a first end of a first resistor is connected to a gate interface, and a second end thereof is connected to a gate of a first switch device; a first end of a second resistor is connected to a second end of the first resistor and the emitter interface, and a second end thereof is connected to a Kelvin emitter interface; a first end of a third resistor is connected to the gate interface, and a second end thereof is connected to a gate of a second switch device; a first end of a fourth resistor is connected to the second end of the third resistor and the emitter interface, and a second end thereof is connected to the Kelvin emitter interface, wherein each resistor connected to a gate serves as a driving resistor for receiving a driving signal, and each resistor connected to the Kelvin emitter is used for suppressing an emitter circulating current and realizing current sharing. In this way, the magnitudes of two resistors can be separately designed with respect to a driving signal and a power signal, so as to better implement the current sharing of switch devices.

Classes IPC  ?

• H02M 1/00 - Détails d'appareils pour transformation

Abrégé

Embodiments of the invention relates to a three-phase bidirectional power converter (100) using a soft switching cell (120). The three-phase bidirectional power converter (100) comprises a switching network (110), a soft switching cell (120), an input (130), and a DC bus (140). The three-phase bidirectional power converter (100) is configured to: align the switches of the switching network (110) into a switching pattern, and to discharge a current from the soft switching cell (120) into the switching network (110) for zero voltage switching of the aligned switches of the switching network (110) according to the switching pattern. Furthermore, the invention also relates to a corresponding method.

Classes IPC  ?

• H02M 1/00 - Détails d'appareils pour transformation
• H02M 7/219 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs dans une configuration en pont
• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
• H02M 7/797 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif avec possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

Vdd Vdd VpCCpCC VCC C , to be maximized. The grid-connected power converter controller is configured to maintain synchronism with the grid and support the grid, when the fault mode is activated.

Classes IPC  ?

• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
• H02M 7/5395 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur avec commande automatique de la forme d'onde ou de la fréquence de sortie par modulation de largeur d'impulsions
• H02M 1/00 - Détails d'appareils pour transformation
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• G05B 13/02 - Systèmes de commande adaptatifs, c.-à-d. systèmes se réglant eux-mêmes automatiquement pour obtenir un rendement optimal suivant un critère prédéterminé électriques
• G05B 13/04 - Systèmes de commande adaptatifs, c.-à-d. systèmes se réglant eux-mêmes automatiquement pour obtenir un rendement optimal suivant un critère prédéterminé électriques impliquant l'usage de modèles ou de simulateurs
• H02S 40/32 - Composants électriques comprenant un onduleur CC/CA associé au module PV lui-même, p. ex. module CA

Abrégé

The present application provides an energy storage cabinet capable of directionally discharging flue gas, and an energy storage system. The energy storage cabinet comprises a box body; the box body is used for accommodating a plurality of stacked battery packs and a flue gas discharging pipe; the flue gas discharging pipe is arranged between a rear wall and the plurality of battery packs; the flue gas discharging pipe extends in a stacking direction of the plurality of battery packs; the flue gas discharging pipe is provided with a plurality of flue gas inlets, a flue gas outlet and a ventilation opening; the flue gas outlet and the ventilation opening are both communicated with an external environment of the energy storage cabinet; on the flue gas discharging pipe, the position of the flue gas outlet is higher than that of the ventilation opening; outer walls of at least some of the battery packs facing the flue gas discharging pipe are provided with pressure relief valves; first sealing members are arranged between the pressure relief valves and the flue gas inlets; an opening at one end of each first sealing member covers the periphery of the corresponding pressure relief valve, and an opening at the other end of the first sealing member covers the periphery of the corresponding flue gas inlet. High-temperature flue gas released when thermal runaway occurs in the battery packs is discharged to the flue gas discharging pipe through the flue gas inlets, and is further released to the external environment through the flue gas outlet, thereby achieving directional flue gas discharging of the energy storage cabinet.

Classes IPC  ?

• H01M 50/30 - Aménagements pour faciliter l’échappement des gaz
• H01M 50/251 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports spécialement adaptés aux dispositifs fixes, p. ex. production d’énergie tampon ou production d’énergie de secours

Abrégé

A battery module (600), a battery pack (1), and an energy storage system. The battery module (600) comprises a first protection unit (610), a first battery cell and a second battery cell; the first protection unit (610) comprises a first breaking device (613), a first detection unit (612) and a first controller (611); the first battery cell and the second battery cell are connected in series. The first breaking device (613) is connected in series between the first battery cell and the second battery cell. The first detection unit (612) is used for detecting first state information, the first state information being used for indicating the state of the battery module (600). When the first state information indicates that the battery module (600) is abnormal, the first controller (611) is used for controlling the first breaking device (613) to be cut off.

Classes IPC  ?

• H01M 50/258 - Batteries modulairesBoîtiers pourvus de moyens d’assemblage
• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p. ex. le niveau ou la densité de l'électrolyte
• H01M 50/583 - Dispositifs ou dispositions pour l’interruption du courant en réponse au courant, p. ex. fusibles
• H01M 50/581 - Dispositifs ou dispositions pour l’interruption du courant en réponse à la température

Abrégé

Provided in the present application are a battery pack having a cut-off protection function, and an energy storage system. The battery pack comprises: a battery module, which is composed of a plurality of single cells; a breaking device, which is connected in series to the battery module; and a current sensor and a controller, wherein a first end of the current sensor is connected to a positive output end of the battery pack, and a second end of the current sensor is connected to a negative output end of the battery pack, such that the current difference between the positive output end and negative output end of the battery pack is measured; and the controller is used for controlling the breaking device to disconnect when the current difference measured by the current sensor is greater than a first threshold value, such that when a cell in the battery pack has a ground short-circuit fault, the fault can be quickly cut off, thereby ensuring the safe operation of the whole energy storage system.

Classes IPC  ?

• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires

Abrégé

An energy storage system having a common-mode arc detection function, and an optical storage device. The energy storage system comprises a battery cluster (112), a common-mode current detection unit (1422) and a controller (141), wherein the controller (141) is used for controlling, when a frequency domain component of a common-mode current detected by the common-mode current detection unit (1422) is greater than a first preset amplitude, the disconnection of the path between the battery cluster (112) and an output end of the energy storage system. Thus, the accuracy and effectiveness of arc phenomenon detection can be improved, detection errors are lowered, and the use safety of the energy storage system is improved.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p. ex. le niveau ou la densité de l'électrolyte
• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• H01M 10/46 - Accumulateurs combinés par structure avec un appareil de charge

Abrégé

A three-state switching cell based frequency multiplying string PV power converter apparatus. The power converter apparatus includes a plurality of cascaded three-state switching cells arranged in two or more power units configured to receive power from two or more variable DC power sources, such as string photovoltaic power sources, and produce a multilevel terminal voltage. The apparatus generates a reduced amplitude ripple and multiplies the effective switching frequency in the reactive components by multiples of two, four, or more times the fundamental switching frequency of the three-state switching cells. Frequency multiplication and multilevel voltage generation is aided by cascading two three-state switching cells sharing a single transformer. The reduced voltage and current ripple amplitude and increased effective frequency allow reduced component size resulting in an efficient power converter apparatus with high power density

Classes IPC  ?

• H02M 7/49 - Combinaison des formes de tension de sortie d'une pluralité de convertisseurs
• H02M 1/00 - Détails d'appareils pour transformation
• H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
• H02M 7/493 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande les convertisseurs statiques étant agencés pour le fonctionnement en parallèle

Abrégé

A dual-way oil-cooled and lubricated powertrain and an electric vehicle. The powertrain (10) comprises a housing, an oil pump (500), a motor (300), a speed reducer (200) and two oil ways (170, 180). The housing comprises a motor accommodating chamber (160) and a speed reducer accommodating chamber (150), the motor accommodating chamber (160) being used for accommodating a stator and a rotor of the motor (300), and the speed reducer accommodating chamber (150) being used for accommodating a gear set of the speed reducer (200). The two oil ways (170, 180) are used for respectively conveying oil to the motor accommodating chamber (160) and the speed reducer accommodating chamber (150). The oil way (180) is used for connecting an outlet of the oil pump (500), at least one of a fine filter (900) and a heat exchanger (400), and the motor accommodating chamber (160). The fine filter (900) is used for filtering out impurities of oil flowing through the oil way (180), and the heat exchanger (400) is used for cooling the oil flowing through the oil way (180). The other oil way (170) is used for directly connecting the outlet of the oil pump (500) and the speed reducer accommodating chamber (150). The high-cleanliness cold oil obtained by means of the oil way (180) cools and lubricates the motor (300) having a fine structure, and crude hot oil of the other oil way (170) directly lubricates the gear set of the speed reducer (200), such that the cooling and lubricating efficiency of the two oil ways (170, 180) are effectively improved.

Classes IPC  ?

• F16H 57/04 - Caractéristiques relatives à la lubrification ou au refroidissement
• F16H 57/02 - Boîtes de vitessesMontage de la transmission à l'intérieur

Abrégé

Provided in the present application are a heat exchanger and an energy storage apparatus. The heat exchanger comprises a refrigerant substrate, a plurality of condensing plate heat exchangers and a plurality of evaporating plate heat exchangers. In a first direction, the condensing plate heat exchangers and the evaporating plate heat exchangers are arranged on the same side of the refrigerant substrate. The side surface of each condensing plate heat exchanger facing the refrigerant substrate comprises a refrigerant inlet and a refrigerant outlet, and the side surface of each evaporating plate heat exchanger facing the refrigerant substrate comprises a refrigerant inlet and a refrigerant outlet. The refrigerant substrate comprises two condensing refrigerant flow paths and two evaporating refrigerant flow paths; one condensing refrigerant flow path in the two condensing refrigerant flow paths is used for connecting the refrigerant inlet of each condensing plate heat exchanger, and the other condensing refrigerant flow path is used for connecting the refrigerant outlet of each condensing plate heat exchanger; one evaporating refrigerant flow path in the two evaporating refrigerant flow paths is used for connecting the other condensing refrigerant flow path and the refrigerant inlet of each evaporating plate heat exchanger, and the other evaporating refrigerant flow path is used for connecting the refrigerant outlet of each evaporating plate heat exchanger. The present application can improve the cooling capacity of heat exchangers.

Classes IPC  ?

• B60H 1/00 - Dispositifs de chauffage, de refroidissement ou de ventilation
• H01M 10/613 - Refroidissement ou maintien du froid

Abrégé

A thermal management system (100), comprising a coolant circulation system, a refrigerant circulation system, and a heat exchange assembly. The refrigerant circulation system comprises a refrigerant flow channel plate (140), wherein a refrigerant flow channel for being communicated with the heat exchange assembly is integrated in the refrigerant flow channel plate (140). The coolant circulation system comprises a first coolant flow channel plate and a second coolant flow channel plate, wherein a coolant flow channel for being communicated with the heat exchange assembly is integrated in each coolant flow channel plate, and the coolant flow channel in the first coolant flow channel plate and the coolant flow channel in the second coolant flow channel plate are communicated with each other. The second coolant flow channel plate, the first coolant flow channel plate, and the refrigerant flow channel plate (140) are sequentially stacked. By stacking the refrigerant flow channel plate (140) and the two coolant flow channel plates, the difficulty of installation and maintenance can be reduced. Additionally, the coolant flow channels are used for being communicated with components in the coolant circulation system, and by distributing the coolant flow channels on the two stacked coolant flow channel plates, the footprint of the coolant flow channel plates can be reduced, and the difficulty of layout of the coolant flow channels can be reduced.

Classes IPC  ?

• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• H01M 10/613 - Refroidissement ou maintien du froid

Abrégé

A powertrain having an open-circuit fault tolerance function. The powertrain comprises an electric motor controller (50) and a driving electric motor (60), wherein the driving electric motor is an interior permanent magnet synchronous electric motor, and the electric motor controller (50) comprises an inverter circuit (52) and a control apparatus (51). The control apparatus (51) is used for controlling, in response to any phase current of a driving current outputted by bridge arm midpoints of three-phase bridge arms becoming zero during the process of receiving a torque signal, bridge arm midpoints of two-phase bridge arms corresponding to the other two phase currents to respectively output a fault-tolerant current, wherein the fault-tolerant current is a pulsed alternating current, a current amplitude of the fault-tolerant current changes along with a change in a rotor angle of the driving electric motor (60), and the fault-tolerant current is used for controlling the average value of torques outputted by the driving electric motor (60) to be less than a torque indicated by the torque signal. A control method for a powertrain, which method is used for the powertrain. An electric vehicle, which comprises a vehicle control unit and the powertrain. By means of such configurations, when an open-circuit fault occurs, output torque pulsations of a driving electric motor can be reduced, and stable operation at a reduced power can be realized, thereby improving the availability of a driving system.

Classes IPC  ?

• B60L 15/20 - Procédés, circuits ou dispositifs pour commander la propulsion des véhicules à traction électrique, p. ex. commande de la vitesse des moteurs de traction en vue de réaliser des performances désiréesAdaptation sur les véhicules à traction électrique de l'installation de commande à distance à partir d'un endroit fixe, de différents endroits du véhicule ou de différents véhicules d'un même train pour la commande du véhicule ou de son moteur en vue de réaliser des performances désirées, p. ex. vitesse, couple, variation programmée de la vitesse

Abrégé

The present application provides a powertrain with a wire outgoing from a speed reducer, a dual-motor powertrain and an electric vehicle. The powertrain comprises a middle integrated shell, a resolver sensor, a motor and a speed reducer, wherein one middle integrated shell comprises a partition plate and two circumferential shells. One circumferential shell is used for fixing a motor stator of one motor and accommodating a motor rotor of one motor, and comprises at least one through hole, and the other circumferential shell is used for accommodating a gear set of one speed reducer; one partition plate is used for separating inner cavities of the two circumferential shells; one partition plate comprises a shaft hole and at least one wire outgoing hole; one shaft hole and the at least one wire outgoing hole are communicated with the inner cavities of the two circumferential shells; one shaft hole and an input shaft of one speed reducer or a motor shaft of one motor are coaxially arranged; and the distance between the at least one wire outgoing hole and a center point of the shaft hole is greater than an inner diameter of a resolver stator of one resolver sensor. The powertrain provided in the present application has a small axial size.

Classes IPC  ?

• H02K 7/116 - Association structurelle avec des embrayages, des freins, des engrenages, des poulies ou des démarreurs mécaniques avec des engrenages

Abrégé

Provided in the present application are a motor rotor balanced utilizing rotor laminations, a motor and a powertrain. The motor rotor comprises rotor cores and a motor shaft. The rotor cores comprise two first rotor cores and a plurality of second rotor cores, the plurality of second rotor cores being successively arranged between the two first rotor cores in the motor axial direction. Each first rotor core and each second rotor core all comprise a plurality of rotor laminations, each rotor lamination comprising a shaft hole, and an inner circumferential surface of each shaft hole comprising at least one protrusion. In the motor axial direction, the motor shaft penetrates through the shaft hole of each rotor lamination, an outer peripheral surface of the motor shaft comprising at least one keyway, and each protrusion being used for being embedded into one keyway of the motor shaft. Each rotor lamination in each first rotor core comprises at least one balancing through hole. Machining the balancing through holes in the rotor laminations in the first rotor cores not only reduces the amount of unbalance of the motor rotor, but also improves the material removal efficiency for dynamic balance of the motor rotor.

Classes IPC  ?

• H02K 1/28 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor
• H02K 1/27 - Noyaux rotoriques à aimants permanents

Abrégé

Provided in the present application are a heat exchanger and an energy storage apparatus. The heat exchanger comprises at least one condensation plate heat exchanger, a plurality of evaporation plate heat exchangers and a refrigerant substrate, wherein each evaporation plate heat exchanger and each condensation plate heat exchanger are arranged on the same side of the refrigerant substrate in a first direction; the side face of each condensation plate heat exchanger facing the refrigerant substrate comprises a condensation refrigerant outlet, and the side face of each evaporation plate heat exchanger facing the refrigerant substrate comprises an evaporation refrigerant inlet; and the refrigerant substrate comprises a converging flow channel and at least one diverging structure, and each diverging structure comprises a plurality of diverging flow channels, one end of the converging flow channel being configured to be in communication with the condensation refrigerant outlet of each condensation plate heat exchanger, the other end of the converging flow channel being configured to be in communication with one end of each diverging flow channel, and the other end of each diverging flow channel being configured to be in communication with the evaporation refrigerant inlet of one evaporation plate heat exchanger. In the heat exchanger provided in the embodiments of the present application, the diverging structure is arranged on the refrigerant substrate, thereby reducing the space occupied by the heat exchanger, and simplifying the assembly of the heat exchanger.

Classes IPC  ?

• B60H 1/00 - Dispositifs de chauffage, de refroidissement ou de ventilation
• H01M 10/613 - Refroidissement ou maintien du froid

Abrégé

Provided in the present application are a heat dissipation system and an energy storage system. The heat dissipation system comprises a case and a thermal management module, the thermal management module being arranged in the case. A partition plate in the case divides the case into a temperature control chamber and a control chamber. The temperature control chamber is located above the control chamber. The thermal management module comprises at least two compressors, at least two water pumps, a plate heat exchange assembly and an electric control box, which are located in the control chamber. The compressors and the electric control box are sequentially arranged in the direction of width, the plate heat exchange assembly and the water pumps are sequentially arranged in the direction of width, and the electric control box and the water pumps are sequentially arranged in the direction of length. The compressors and the water pumps are connected to the plate heat exchange assembly, and the compressors and the water pumps are connected to the electric control box. The thermal management module further comprises a liquid cooling unit located in the temperature control chamber, the plate heat exchange assembly and the electric control box being connected to the liquid cooling unit. The heat dissipation system of the present application can realize hydraulic-electrical isolation and multiple thermal management systems, such that thermal management can still be performed in a scenario where a single thermal management system fails, thus improving the reliability of the energy storage system.

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage

Abrégé

An energy storage apparatus (1) having an explosion venting function, an explosion venting structure (20), and an energy storage system (1000). The energy storage apparatus (1) comprises a housing (10), an explosion venting plate (30), and a battery module (60). The energy storage apparatus (1) further comprises a stud (46) and a screw (42) used to fasten the explosion venting plate (30) to the housing (10). One end of the stud (46) is sealed and fixedly connected to an inner surface (31) of the explosion venting plate (30) facing an accommodating cavity (101), the stud (46) protrudes toward the accommodating cavity (101), an end surface of the other end of an extending direction of the stud (46) is provided with a through hole (461), an overlapping region of the housing (10) and the explosion venting plate (30) is provided with a holding hole (103), and the screw (42) located in the accommodating cavity (101) passes through the holding hole (103) along an extending direction of the screw (42) and is embedded into the through hole (461). The screw (42) and the stud (46) of the energy storage apparatus (1) are built in, and one end of the stud (46) is sealed and fixedly connected to the inner surface (31) of the explosion venting plate (30) facing the accommodating cavity (101), so that the explosion venting plate (30) can be prevented from leaking water or leaking air at the position connected to the stud (46), so as to improve the sealing performance. In addition, an explosion venting channel does not need to be considered, and multi-directional explosion venting can be implemented.

Classes IPC  ?

• H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques Détails
• H05K 5/03 - Couvercles ou capots
• H05K 5/06 - Enveloppes scellées hermétiquement
• H01M 50/20 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports
• H02J 15/00 - Systèmes d'accumulation d'énergie électrique

Abrégé

The present application provides a power converter, comprising: a power conversion circuit and a control circuit. The power conversion circuit comprises an inverter circuit, a direct-current bus capacitor, and a detection circuit, wherein the direct-current bus capacitor is connected in parallel to the inverter circuit. The direct-current bus capacitor comprises a positive bus capacitor and a negative bus capacitor which are connected in series. The inverter circuit comprises bridge arms. The detection circuit is used for measuring the voltage on the two sides of the positive bus capacitor, the voltage on the two sides of the negative bus capacitor, and an output current of each bridge arm. The control circuit is used for, in response to a preset condition, controlling the bridge arm to be switched from outputting two types of levels to outputting three types of levels in one switching period. The preset condition is a condition based on the voltage of the positive bus capacitor, the voltage of the negative bus capacitor, and the output current of the bridge arm. According to the present application, the three-level and two-level hybrid modulation is used, so that the power converter can achieve balance on the output quality of electric energy and power consumption, improving the performance of the power converter.

Classes IPC  ?

• H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
• H02M 1/00 - Détails d'appareils pour transformation
• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif

Abrégé

A power converter and a three-phase four-leg inverter circuit modulation method. The power converter comprises a three-phase four-leg inverter circuit and a controller. The controller is used for: when the absolute value of the instantaneous value of a modulation signal for an N-leg is greater than a first effective modulus value, injecting the modulation signal into the N-leg in a unipolar manner, or when the absolute value of the instantaneous value of the modulation signal for the N-leg is less than a second effective modulus value, injecting the modulation signal into the N-leg in a bipolar manner. The present application can prevent the modulation signal for the N-leg from being lost, reducing the switching loss of main legs, and improving the quality of electric energy output by the power converter.

Classes IPC  ?

• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
• H02M 1/088 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques pour la commande simultanée de dispositifs à semi-conducteurs connectés en série ou en parallèle
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

An energy storage device (1) with an explosion venting function and an energy storage system (1000), the energy storage device (1) comprising a housing (20), an explosion venting plate (31), an insertion member (32), and a transmission assembly (33), wherein the housing (20) is provided with an insertion hole (102); the insertion member (32) is inserted into the insertion hole (102) thus fixing the explosion venting plate (31) to the housing (20); one end of the transmission assembly (33) is connected to the explosion venting plate (31), and the other end of the transmission assembly (33) is connected to the insertion member (32); and in the direction of insertion of the insertion member (32), the joint of the other end of the transmission assembly (33) and the insertion member (32) is located between the insertion hole (102) and the joint of one end of the transmission assembly (33) and the explosion venting plate (31). While overcoming defects such as assembly errors, part machining errors, and metal fatigue vibration, the energy storage device (1) has the advantages of easy machining and assembly, and reliability. On the basis of an explosion venting pressure, the deformation of the explosion venting plate (31) is calculated, and on the basis of the calculated amount of the deformation of the explosion venting plate (31), the length to which the insertion member (32) is inserted into the insertion hole (102) is then calculated. The explosion venting actuation pressure can be controlled simply by changing the length to which the insertion member (32) is inserted into the insertion hole (102), thereby adapting to scenarios with different explosion venting pressures.

Classes IPC  ?

• H01M 50/317 - Aménagements refermables
• H02J 15/00 - Systèmes d'accumulation d'énergie électrique
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries

Abrégé

Provided in the present application are an electro-mechanical brake device having an embedded lead screw, an electro-mechanical brake system and a vehicle. The electro-mechanical brake device comprises a housing, a brake motor, a speed reducer and a lead screw, wherein the brake motor is configured to drive the lead screw by means of the speed reducer to drive a friction plate; the housing is configured to accommodate a stator and a rotor of the brake motor, a planetary gearset of the speed reducer, and the lead screw; the stator and the planetary gearset are arranged in an axial direction of the brake motor, and the planetary gearset is configured to be drivingly connected to the rotor and the lead screw; the stator, the rotor and the lead screw are coaxially arranged; and the lead screw is at least partially embedded in a central hole of the stator or the rotor. In the electro-mechanical brake device of the present application, the lead screw is at least partially embedded in the central hole of the stator or the rotor, thus reducing the axial size of the electron-mechanical brake device, and achieving miniaturization.

Classes IPC  ?

• B60T 13/74 - Transmission de l'action de freinage entre l'organe d'attaque et les organes terminaux d'action, avec puissance de freinage assistée ou relais de puissanceSystèmes de freins incorporant ces moyens de transmission, p. ex. systèmes de freinage à pression d'air avec entraînement ou assistance électrique
• F16D 55/226 - Freins à surfaces de freinage substantiellement radiales pressées l'une contre l'autre dans une direction axiale, p. ex. freins à disques avec disques ou patins déplaçables selon l'axe pressés contre des organes en rotation situés dans l'axe par serrage entre des organes mobiles de freinage, p. ex. des disques ou des patins de freins mobiles avec un organe d'actionnement commun pour les organes de freinage les organes de freinage étant des patins de freins dans lesquels l'organe d'actionnement commun se déplace axialement

Abrégé

Disclosed are an electric motor and a power assembly device. The electric motor comprises a casing, a stator mechanism and a rotor mechanism, wherein the stator mechanism is fixedly arranged in the casing, the rotor mechanism is rotatably arranged in the stator mechanism, and the casing is provided with a liquid supply flow channel. A first liquid outlet and a second liquid outlet are respectively provided at two ends of the stator mechanism; and the stator mechanism comprises a first flow channel, two ends of the first flow channel being in communication with the first liquid outlet and a second liquid outlet, respectively. The stator mechanism comprises a lamination, the lamination comprising a first through slot and a second through slot. The first through slot is in communication with the second through slot to form a second flow channel through which the first flow channel is in communication with the liquid supply flow channel. The first flow channel and the second flow channel form a cooling flow channel in the stator mechanism, a cooling liquid is input into the cooling flow channel in the stator mechanism through the liquid supply flow channel of the casing, the cooling liquid fully exchanges heat with the stator mechanism, and the cooling liquid is then sprayed out through the liquid outlets in two end surfaces of the stator mechanism, to enable a coil winding of the stator mechanism to be cooled, such that the cooling capacity of the electric motor can be improved.

Classes IPC  ?

• H02K 5/20 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des canaux ou des conduits pour la circulation d'un agent de refroidissement
• H02K 1/20 - Parties fixes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement
• H02K 9/19 - Dispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p. ex. de l'huile
• H02K 7/116 - Association structurelle avec des embrayages, des freins, des engrenages, des poulies ou des démarreurs mécaniques avec des engrenages

Abrégé

The present application provides an electromechanical brake apparatus provided with an embedded speed reducer and a vehicle. The electromechanical brake apparatus comprises a housing, a brake motor, a coaxial speed reducer, and a brake caliper; the brake motor is used for driving, by means of the coaxial speed reducer, the brake caliper to drive a friction plate; the housing is used for accommodating a stator and a rotor of the brake motor and a planetary gear set of the coaxial speed reducer; the rotor is used for being in transmission connection with the planetary gear set; the stator, the rotor, and an output shaft are coaxially arranged; and the planetary gear set is at least partially embedded in a center hole of the stator or the rotor. According to the electromechanical brake apparatus of the present application, by at least partially embedding the planetary gear set in the center hole of the stator or the rotor, the axial dimension of the electromechanical brake apparatus is reduced, and miniaturization is achieved.

Classes IPC  ?

• F16D 55/226 - Freins à surfaces de freinage substantiellement radiales pressées l'une contre l'autre dans une direction axiale, p. ex. freins à disques avec disques ou patins déplaçables selon l'axe pressés contre des organes en rotation situés dans l'axe par serrage entre des organes mobiles de freinage, p. ex. des disques ou des patins de freins mobiles avec un organe d'actionnement commun pour les organes de freinage les organes de freinage étant des patins de freins dans lesquels l'organe d'actionnement commun se déplace axialement
• F16D 65/16 - Mécanismes d'actionnement pour freinsMoyens pour amorcer l'opération de freinage à une position prédéterminée disposés dans, ou sur le frein
• F16D 71/00 - Mécanismes pour amener les organes rotatifs dans une position prédéterminée de repos
• B60T 13/74 - Transmission de l'action de freinage entre l'organe d'attaque et les organes terminaux d'action, avec puissance de freinage assistée ou relais de puissanceSystèmes de freins incorporant ces moyens de transmission, p. ex. systèmes de freinage à pression d'air avec entraînement ou assistance électrique

Abrégé

The present application provides a photovoltaic inverter and a photovoltaic power generation system. The photovoltaic inverter has good effect. The photovoltaic inverter comprises at least one power semiconductor device, a radiator, a lower box body, and an upper box body, wherein the lower box body and the upper box body are arranged in a first direction; the lower box body is used for accommodating the at least one power semiconductor device; the radiator comprises two condensers and at least one evaporator; and the evaporator is configured to be connected to the condensers by means of two-phase pipes, in contact connection to the outer wall of the lower box body, and connected to the power semiconductor device in a heat-conductive manner. The upper box body comprises a middle partition plate and two ventilation openings oppositely arranged in a second direction; the middle partition plate is of a stepped structure in the second direction, and used for dividing a cavity of the upper box body into two sub-cavities; each sub-cavity is used for accommodating one condenser; and the two condensers are spaced apart from each other in the second direction.

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage

Abrégé

A charging/discharging device (300), comprising resistance conversion circuits (320), connection confirm (CC) interfaces (312), and alternating current interfaces (311). One end of each resistance conversion circuit is grounded, and the other end of the resistance conversion circuit is connected to a CC interface; the CC interface and the alternating current interface are both used for connection to an electric vehicle (400); the resistance conversion circuit comprises a plurality of switches and a plurality of resistors; the plurality of switches are used for adjusting an equivalent resistance value of the resistance conversion circuit; the equivalent resistance value of the resistance conversion circuit is used for the electric vehicle to output an alternating current to the alternating current interface or used for the electric vehicle to receive an alternating current output by the alternating current interface. Also disclosed are a charging/discharging system and a charging/discharging method. By means of the charging/discharging device, the charging function and the discharging function of electric vehicles can be achieved, the charging and discharging operations are simple, and the device cost is low.

Classes IPC  ?

• B60L 53/00 - Procédés de chargement de batteries spécialement adaptées aux véhicules électriquesStations de charge ou équipements de charge embarqués pour ces batteriesÉchange d'éléments d’emmagasinage d'énergie dans les véhicules électriques
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• B60L 53/22 - Détails de structure ou aménagements des convertisseurs de charge spécialement adaptés pour recharger des véhicules électriques
• B60L 53/62 - Surveillance et commande des stations de charge en réponse à des paramètres de charge, p. ex. courant, tension ou charge électrique
• B60L 55/00 - Dispositions relatives à la fourniture d'énergie emmagasinée dans un véhicule à un réseau électrique, c.-à-d. du véhicule au réseau [V2G]

Abrégé

A power conversion device, comprising a housing, and a first circuit board, one or more switching transistors, one or more inductors and multiple capacitors which are located in the housing. The first circuit board is arranged opposite to a bottom plate of the housing in a first direction; the one or more switching transistors, the one or more inductors, and the multiple capacitors are all fixed to the first circuit board and located between the first circuit board and the bottom plate of the housing; the bottom plate of the housing comprises a first cavity, a second cavity, and a third cavity which are communicated in sequence; the first cavity is used for accommodating the multiple capacitors, the second cavity is used for accommodating the one or more switching transistors, and the third cavity is used for accommodating the one or more inductors; and in the first direction, the depth of the second cavity is less than the depth of the first cavity and less than the depth of the third cavity.

Classes IPC  ?

• H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage

Abrégé

Provided in the present application are a double-motor power assembly having an integrated housing, and an electric vehicle. The double-motor power assembly comprises two middle housings and a middle partition plate, a receiving cavity of each middle housing being configured to receive a speed reducer and a motor. The middle partition plate comprises two partition plate mounting surfaces, which are opposite to each other, each partition plate mounting surface being configured to be fixedly connected to one middle housing. Each partition plate mounting surface comprises two partition plate oil holes, the partition plate oil holes of the two partition plate mounting surfaces facing away from each other. The two partition plate oil holes of each partition plate mounting surface are in communication with each other by means of one inner oil channel of the middle partition plate, and the two partition plate oil holes of each partition plate mounting surface are in communication with one heat exchanger and the receiving cavity by means of two inner oil channels of one middle housing correspondingly. In the present application, the two independent oil channels are formed in the middle partition plate so as to independently supply oil to the receiving cavities of the two middle housings, and the situation whereby the distribution of cooling oil in the double-motor power assembly is uneven is relieved; therefore, the working efficiency of the double-motor power assembly is improved.

Classes IPC  ?

• H02K 5/20 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des canaux ou des conduits pour la circulation d'un agent de refroidissement

Abrégé

A control method for a front-drive motor (10) of a vehicle (100), a motor controller (30), and a power assembly (130), the front-drive motor (10) being used to connect to wheels (120) of the vehicle (100) by means of a transmission device. The control method comprises: in response to a torque value of the front-drive motor (10) indicated by a torque request outputted by an accelerator pedal (410) being greater than first torque, regulating the output driving torque of the front-drive motor (10) on the basis of the torque request outputted by the accelerator pedal (410); and in response to the comparison between the vibration intensity of the transmission device when the vehicle (100) runs in a gliding state and a preset vibration intensity, controlling the front-drive motor (10) to rotate along with the wheels (120) or output gear meshing torque, the moment direction of the driving torque being opposite to the moment direction of the gear meshing torque. The method can control the front-drive motor (10) to output the gear meshing torque, so as to enable an output shaft gear of the front-drive motor (10) and a gear of the transmission device to be tightly meshed, thereby reducing gear collision sounds of front-drive asynchronous power assemblies at small torque, and improving the NVH performance of the vehicle (100).

Classes IPC  ?

• B60L 15/20 - Procédés, circuits ou dispositifs pour commander la propulsion des véhicules à traction électrique, p. ex. commande de la vitesse des moteurs de traction en vue de réaliser des performances désiréesAdaptation sur les véhicules à traction électrique de l'installation de commande à distance à partir d'un endroit fixe, de différents endroits du véhicule ou de différents véhicules d'un même train pour la commande du véhicule ou de son moteur en vue de réaliser des performances désirées, p. ex. vitesse, couple, variation programmée de la vitesse
• B60W 30/20 - Réduction des vibrations dans la chaîne cinématique

Abrégé

Provided are a power assembly (30) having a differential gear protection function, a control method for the power assembly (30), and an electric vehicle (10), relating to the field of new energy vehicles, and applicable to pure electric vehicles and hybrid vehicles. The power assembly (30) comprises a driving motor (60), a motor controller (50) and a differential gear (70), wherein the driving motor (60) is transmittingly connected to the differential gear (70); the differential gear (70) is transmittingly connected to two wheels (12) of an electric vehicle respectively, and the two wheels (12) are two front wheels or two rear wheels; and the motor controller (50) is configured to control a torque value output by the driving motor (60) to be less than or equal to a torque limit value, the torque limit value being reduced along with the increase of a wheel speed difference between the two wheels. The motor controller (50) protects the differential gear (70) according to the hardware capability and working boundary of the differential gear (70), thereby improving the reliability of the power assembly (30) and the safety of the entire vehicle.

Classes IPC  ?

• B60L 15/20 - Procédés, circuits ou dispositifs pour commander la propulsion des véhicules à traction électrique, p. ex. commande de la vitesse des moteurs de traction en vue de réaliser des performances désiréesAdaptation sur les véhicules à traction électrique de l'installation de commande à distance à partir d'un endroit fixe, de différents endroits du véhicule ou de différents véhicules d'un même train pour la commande du véhicule ou de son moteur en vue de réaliser des performances désirées, p. ex. vitesse, couple, variation programmée de la vitesse
• B60W 30/18 - Propulsion du véhicule

Abrégé

The present application provides a battery, a battery pack and an energy storage system. The battery comprises a casing, a pole core, a Mylar film, an insulating porous film and a bottom supporting sheet, wherein the pole core, the Mylar film, the insulating porous film and the bottom supporting sheet are all accommodated in the casing, the bottom surface of the pole core, the Mylar film, the insulating porous film and the bottom supporting sheet are sequentially stacked, and the insulating porous film located on the bottom surface comprises a plurality of through holes. The through holes of the insulating porous film can reduce the circulation of dust falling off from the pole core between the pole core and the casing, thus reducing the possibility of micro short circuit formed between the bottom surface of the pole core and the casing.

Classes IPC  ?

• H01M 50/593 - Éléments d’espacementPlaques d’isolation

Abrégé

An energy storage apparatus with an explosion venting function, and an energy storage system. The energy storage apparatus comprises a case, a plurality of battery modules, explosion venting members and door panels, wherein the explosion venting members and the door panels are used for passive pressure relief of an accommodating cavity and being opened under different pressures of the accommodating cavity. An explosion venting form of the energy storage apparatus is a two-stage explosion venting form; when the explosion overpressure in the energy storage apparatus is lower than a set value, explosion venting is performed by means of the explosion venting members without opening the door panels, and the overall structure remains intact; and when internal overpressure caused by explosion exceeds another set value, explosion venting windows and the door panels are simultaneously opened for explosion venting, and the main structure remains intact, such that layered and staged explosion venting can be realized, thereby preventing the case from breaking apart.

Classes IPC  ?

• H01M 50/317 - Aménagements refermables
• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• H01M 50/244 - Boîtiers secondairesBâtisDispositifs de suspensionDispositifs de manutentionSupports caractérisés par leur procédé de montage
• H01M 50/204 - Bâtis, modules ou blocs de multiples batteries ou de multiples cellules

Abrégé

Embodiments of the present application provide a stator lamination having cooling holes, a motor, a powertrain, and an electric vehicle. The stator lamination comprises a plurality of first cooling holes and a plurality of second cooling holes. The plurality of first cooling holes are spaced apart in the circumferential direction of the stator lamination, and the plurality of second cooling holes are spaced apart in the circumferential direction of the stator lamination. In two adjacent first cooling holes in the circumferential direction of the stator lamination, the distance between one first cooling hole and the center of the stator lamination is greater than the distance between the other first cooling hole and the center of the stator lamination. In two adjacent second cooling holes in the circumferential direction of the stator lamination, the distance between one second cooling hole and the center of the stator lamination is greater than the distance between the other second cooling hole and the center of the stator lamination. The first cooling holes and the second cooling holes can be alternatives to each other, ensuring that the angle of spraying to the end of the motor covers the circumferential range of the motor, so as to satisfy the requirement for spraying in the circumferential direction of the motor to dissipate heat from an end winding.

Classes IPC  ?

• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 1/20 - Parties fixes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement

Abrégé

A battery (10), a battery pack (100), and an energy storage system. The battery (10) comprises a casing (11) and two battery cells (31, 41) located in the casing (11). A partition plate (21) is provided between the two battery cells (31, 41), a peripheral side of the partition plate (21) being connected to the casing (11) so as to prevent an electrolyte in the casing (11) from flowing between the two battery cells (31, 41), thereby isolating the battery cells (31, 41), and preventing the excessively high voltage of multiple battery cells directly connected in series from decomposing the electrolyte. The two battery cells (31, 41) are each provided with a positive tab (311, 411) and a negative tab (312, 412), the arrangement direction of the two battery cells (31, 41) being consistent with the arrangement direction of the positive tab (311, 411) and the negative tab (312, 412) of any battery cell (31, 41), wherein the positive tab (311, 411) of one battery cell (31, 41) and the negative tab (312, 412) of the other battery cell (31, 41) are arranged opposite to each other in the arrangement direction of the two battery cell (31, 41) and are electrically connected to each other by means of the partition plate (21). Thus, the two battery cells (31, 41) are connected in series by means of the partition plate (21). Because the tabs of different polarities of the two battery cells (31, 41) are connected in series by means of the partition plate (21), there is no need to provide a post (51, 61) and a cover plate assembly (81) at the two tabs connected in series, thereby reducing the number of used parts.

Classes IPC  ?

• H01M 50/502 - Interconnecteurs pour connecter les bornes des batteries adjacentesInterconnecteurs pour connecter les cellules en dehors d'un boîtier de batterie
• H01M 50/531 - Connexions d’électrodes dans un boîtier de batterie
• H01M 50/289 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports caractérisés par des éléments d’espacement ou des moyens de positionnement dans les racks, les cadres ou les blocs
• H01M 50/244 - Boîtiers secondairesBâtisDispositifs de suspensionDispositifs de manutentionSupports caractérisés par leur procédé de montage
• H01M 50/249 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports spécialement adaptés aux aéronefs ou aux véhicules, p. ex. aux automobiles ou aux trains

Abrégé

The disclosure relates to a wireless power transmitter device (501) for transmitting power wirelessly to a receiver device (504) having a receiver coil (405). The wireless power transmitter device 501 comprises: at least one power source (502); and a three-dimensional coil array (400) electrically connected to the at least one power source (502). The three- dimensional coil array (400) comprises: a first coil (400a) arranged along a first area, the first coil (400a) comprising a first number of conductive turns; and a second coil (400b) arranged along a second area, the second coil (400b) comprising a second number of conductive turns. The first coil (400a) and the second coil (400b) are configured to generate magnetic fields which are represented by magnetic field vectors (404a, 404b) that point in a same direction. The first coil (400a) and the second coil (400b) are arranged at a distance from one another, such that the receiver coil (405) can be placed between the first area and the second area for receiving power wirelessly from the two coils (400a, 400b).

Classes IPC  ?

• H02J 50/00 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique
• H02J 50/10 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif

Abrégé

A reconfigurable bidirectional series-resonant DC-DC power converter apparatus has a LC resonant tank split on either side of a transformer that prevents DC bias introduced by the input switching circuit and the full bridge output switching circuit from effecting the transformer. The converter operates the full bridge switching circuit to reconfigure the converter topology. When the converter gain is less than a nominal gain, the converter is reconfigured as a half bridge/full bridge topology. When the converter gain is greater than or equal to the nominal gain and the output voltage is less than a maximum voltage, the converter is reconfigured as a half bridge/semi-full bridge topology. When the output voltage is greater than or equal to the maximum voltage the converter is reconfigured as a half bridge/half bridge topology. Converter reconfiguration allows an ultra-wide output voltage rage to be handled efficiently without increased component count.

Classes IPC  ?

• H02M 3/00 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu
• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02M 3/337 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs en configuration push-pull

Abrégé

The present application provides a rotary isolation switch and a power converter. The rotary isolation switch comprises a driving mechanism and a plurality of switch units which are sequentially arranged in a first direction. Each switch unit comprises a moving contact assembly, and the driving mechanism drives the moving contact assembly to rotate. The moving contact assembly adjacent to the driving mechanism is a first moving contact assembly, the driving mechanism is connected to the first moving contact assembly and is used for applying a rotating force to the first moving contact assembly, and two adjacent moving contact assemblies are inserted into each other. The switch unit farthest from the driving mechanism is a second switch unit. The second switch unit comprises an isolation cover plate, wherein the isolation cover plate comprises an observation hole and a reference mark, so that the rotation angle of a second moving contact assembly can be visualized, and the connection status of the rotary isolation switch can be determined on the basis of the position of the second moving contact assembly. The reference mark is located on the peripheral side of the observation hole, a pointer is arranged on one side of the second moving contact assembly facing the isolation cover plate, and the second moving contact assembly is rotated to achieve alignment between the pointer and the reference mark.

Classes IPC  ?

• H01H 31/02 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs Détails
• H02M 1/00 - Détails d'appareils pour transformation

Abrégé

A battery pack (10) and an energy storage system, the battery pack (10) comprising a circuit board assembly (12), a cover plate (13), and a plurality of battery cells (100). Each battery cell (100) comprises, on one surface, an explosion-proof valve (103). The plurality of battery cells (100) are arranged in parallel, and said surfaces of the battery cells (100) have the same orientation. The circuit board assembly (12) is arranged on the side of the plurality of battery cells (100) close to said surfaces. The circuit board assembly (12) comprises a plurality of first through holes (120), and the plurality of first through holes (120) are sealingly connected in one-to-one correspondence with the plurality of explosion-proof valves (103). The cover plate (13) is arranged on the side of the circuit board assembly (12) facing away from the battery cells (100). The cover plate (13) comprises a plurality of explosion-proof windows (130), and the plurality of explosion-proof windows (130) are sealingly connected in one-to-one correspondence with the plurality of first through holes (120). In the battery pack (10), the first through holes (120) and the explosion-proof windows (130) can form pressure relief channels, and erupted substances in the battery cells (100) can flow through the first through holes (120) to be discharged out of the explosion-proof windows (130) so as to prevent the erupted substances from spreading within the battery pack (10), thereby improving the safety of the battery pack (10).

Classes IPC  ?

• H01M 50/30 - Aménagements pour faciliter l’échappement des gaz

Abrégé

A powertrain (10), a distributed powertrain (10a), and an electric vehicle (1), the powertrain (10) comprising an electric motor (300), a speed reducer (200) and a speed reducer end plate (100), wherein a speed reducer end plate (210) of the speed reducer (200) is configured to be in transmission connection with an electric motor shaft (310) of the electric motor (300); and the speed reducer end plate (100) comprises a recess (120) and a protrusion (110) which are formed by integral die-casting, with the recess (120) being configured to accommodate a speed reducer bearing (220), and an inner ring of the speed reducer bearing (220) being configured to be fixedly connected to an outer peripheral surface of the speed reducer end plate (210). The protrusion (110) extends towards the electric motor shaft (310) from a bottom (211) of the recess (120), and the protrusion (110) comprises a cooling liquid channel (111). The speed reducer end plate (210) comprises a shaft cavity (211), the speed reducer end plate (210) is penetrated along the electric motor shaft (310) towards the shaft cavity (211), the shaft cavity (211) of the speed reducer end plate (210) is configured to accommodate one end of the electric motor shaft (310) and one end of the protrusion (110), and an internal flow channel at one end of the electric motor shaft (310) is configured to be in communication with the cooling liquid channel (111) of the protrusion (110). A speed reducer end plate (210) has multiple functions and can be reused, such that the powertrain (10) has a compact structure; and the protrusion (110) and the recess (120) are integrally die-cast, so that the structural reliability of the powertrain (10) is improved, and the integrally die-cast protrusion (110) is also beneficial for reducing the flow resistance of cooling oil and enhancing the cooling and lubricating effects.

Classes IPC  ?

• B60K 11/02 - Dispositions des ensembles de propulsion relatives au refroidissement avec liquide de refroidissement
• B60K 1/00 - Agencement ou montage des ensembles de propulsion électriques
• F16H 57/04 - Caractéristiques relatives à la lubrification ou au refroidissement
• H02K 9/00 - Dispositions de refroidissement ou de ventilation

Abrégé

The disclosure relates to techniques for current sensing, in particular a current sensing apparatus comprising: at least three layers of which two are electrically conductive layers and one is an electrically insulating layer, the at least three layers being arranged above each other; the current trace (200) formed by a first electrically conductive layer of the at least three layers; and an embedded inductor (201a, 201b) formed by at least one second electrically conductive layer of the at least three layers. The embedded inductor comprises a first plurality of conductive turns (201a) that are wound along a first winding direction, and a second plurality of conductive turns (201b) that are wound along a second winding direction opposite to the first winding direction. The embedded inductor is configured to provide a sensing voltage indicative of a current (202) flowing through the current trace (200). The sensing voltage results from a superposition of voltages induced by a current (202) flowing through the current trace (200) in each of the two pluralities of conductive turns.

Classes IPC  ?

• G01R 15/18 - Adaptations fournissant une isolation en tension ou en courant, p. ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs inductifs, p. ex. des transformateurs
• H01F 5/00 - Bobines d'induction
• G01R 15/14 - Adaptations fournissant une isolation en tension ou en courant, p. ex. adaptations pour les réseaux à haute tension ou à courant fort
• G01R 19/00 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe

Abrégé

Provided in the present application are a power module and a motor controller. The power module comprises an insulation substrate, a power device, a heat dissipation substrate and a welding layer. The power device is mounted on one side of the insulation substrate. The heat dissipation substrate is located on the side of the insulation substrate facing away from the power device. The welding layer fills between the insulation substrate and the heat dissipation substrate. A supporting member and a thinned member are arranged between the insulation substrate and the heat dissipation substrate, the supporting member being in contact with the insulation substrate and the heat dissipation substrate and located on the edge side of the insulation substrate, the supporting member being in contact with the welding layer, the projection of the thinned member on the insulation substrate overlapping the projection of the power device on the insulation substrate, and the thinned member being covered by the welding layer. The power module provided by the embodiments of the present application has the supporting member and the thinned member which not only ensure that the welding layer has high reliability, but also greatly increase the speed of dissipating heat of the power device from the insulation substrate via the heat dissipation substrate, thereby ensuring both the structural reliability and heat dissipation.

Classes IPC  ?

• H05K 1/02 - Circuits imprimés Détails
• H01L 23/492 - Embases ou plaques

Abrégé

Provided in the present application are a power converter and a control method therefor, and an energy storage system. The power converter comprises a plurality of power conversion circuits which are connected in parallel. In response to the reduction of the total output power of output ends of the plurality of power conversion circuits, at least one of the plurality of power conversion circuits can be switched from an operation state to a stop state, so that the conversion efficiency of each power conversion circuit in the operation state is improved, thereby improving the operation efficiency of the power converter, and particularly improving the efficiency of the power converter in a light load.

Classes IPC  ?

• H02M 1/00 - Détails d'appareils pour transformation
• H02M 1/36 - Moyens pour mettre en marche ou arrêter les convertisseurs
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries

Abrégé

The present application provides a motor and a powertrain. The motor comprises a stator. The stator comprises an end plate and multiple silicon steel pieces, the end plate and the multiple silicon steel pieces being stacked in the axial direction of the motor; each silicon steel piece is provided with cooling holes, the cooling holes penetrate through the silicon steel piece in the axial direction of the motor, and the cooling holes of the multiple silicon steel pieces are in communication with one another. The end plate comprises through holes, the through holes penetrate through the end plate in the axial direction of the motor, and the through holes are in communication with the cooling holes; the projection of the end plate in the axial direction of the motor is located in the projections of the silicon steel pieces in the axial direction of the motor, the cross-sectional area of the end plate is smaller than the cross-sectional areas of the silicon steel pieces, and the cross section of the end plate and the cross sections of the silicon steel pieces are all perpendicular to the axial direction of the motor. In the present application, the height of the stator in the axial direction is increased by the end plate, so that the end plate can block the insulating paint overflown from the stator slot and the overflowing insulating paint flows to the area that is not covered by the end plate, thereby reducing the risk of the insulating paint blocking the cooling holes.

Classes IPC  ?

• H02K 1/20 - Parties fixes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement
• H02K 3/52 - Fixation des enroulements de pôles saillants ou de leurs connexions
• H02K 3/34 - Enroulements caractérisés par la configuration, la forme ou la réalisation de l'isolement entre conducteurs ou entre conducteur et noyau, p. ex. isolement d'encoches
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator

Abrégé

Provided in the present application are a direct-current converter and a photovoltaic system. An input end of a direct-current conversion circuit is connected to an input end of the auxiliary power supply in parallel to serve as the input end of the direct-current converter, wherein the input end of the direct-current converter is used for being connected to a direct-current power supply; an output end of the auxiliary power supply is connected to an input end of a safety voltage output circuit; and an output end of the safety voltage output circuit is connected to an output end of the direct-current conversion circuit in parallel and then serves as the output end of the direct-current converter. The auxiliary power supply is used for outputting a second voltage to the safety voltage output circuit on the basis of a first voltage provided by the direct-current power supply when the direct-current conversion circuit does not perform voltage conversion. The safety voltage output circuit is used for outputting a safety voltage on the basis of the second voltage. The safety voltage is used for being compared with a preset safety voltage threshold value, so that the wiring state between the direct-current converter and the direct-current power supply is determined. The present application can reduce the measurement error of a safety voltage of an output end of a direct-current converter, thus improving the accuracy of wiring abnormality detection.

Classes IPC  ?

• H02M 3/158 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la tension ou du courant de sortie, p. ex. régulateurs à commutation comprenant plusieurs dispositifs à semi-conducteurs comme dispositifs de commande finale pour une charge unique
• H02M 3/155 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

Provided in the embodiments of the present application are a heat dissipation system and a charging pile. The heat dissipation system comprises a heat dissipation device and a charging device. The heat dissipation device comprises a heat exchanger, and the heat exchanger has a cooling liquid channel and a heat-exchange liquid channel. Each of a cooling liquid inlet and a cooling liquid outlet of the cooling liquid channel is in communication with a charging main body, such that cooling liquid in the charging main body circulates through the cooling liquid channel. Each of a heat-exchange liquid inlet and a heat-exchange liquid outlet of the heat-exchange liquid channel is used for communication with an external cooling device, such that heat-exchange liquid in the external cooling device circulates through the heat-exchange liquid channel. The heat-exchange liquid flowing through the heat-exchange liquid channel is used for cooling the cooling liquid flowing through the cooling liquid channel. The technical solution provided in the embodiments of the present application can improve the heat dissipation effect of the charging device, helping to meet growing heat dissipation demands of the charging device.

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
• B60L 53/302 - Refroidissement des équipements de charge

Abrégé

A power module and a power conversion device. The power module comprises a first substrate, a second substrate and a conductive member, wherein the first substrate and the second substrate are arranged spaced apart from each other, and the conductive member is connected between the first substrate and the second substrate; a first chip is provided on the first substrate or the second substrate; the surface of the first substrate facing the second substrate comprises a first area and a second area surrounding the first area, the first area comprises an inner island and a groove surrounding the inner island, and the groove is filled with solder; and a mounting end surface of the conductive member faces the first area, and is supported by the inner island, and the mounting end surface of the conductive member is fixedly connected to the solder, so as to electrically connect the first chip to the conductive member. The inner island supporting the conductive member can increase the bonded line thickness, thereby improving the soldering strength between the first substrate and the conductive member.

Classes IPC  ?

• H01L 25/16 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant de types couverts par plusieurs des sous-classes , , , , ou , p. ex. circuit hybrides
• H01L 23/492 - Embases ou plaques

Abrégé

Embodiments of the present application provide a circuit breaker and a photovoltaic system. The circuit breaker comprises a housing, busbars, detonating assemblies, and arc extinguishing assemblies. The housing comprises arc extinguishing chambers and detonating chambers which are correspondingly communicated, the arc extinguishing assemblies are accommodated in the arc extinguishing chambers, and the detonating assemblies are accommodated in the detonating chambers. The busbars pass through the housing, parts of the busbars are located between the arc extinguishing chambers and the detonating assemblies, and each detonating assembly is used for exploding and breaking the corresponding busbar when the current flowing through the busbar is greater than a safety threshold, so as to achieve a circuit breaking function. Each arc extinguishing assembly comprises a plurality of arc extinguishing plates and a first arc striking member, and the first arc striking member is fixed to the corresponding busbar. A first end of the first arc striking member comprises a first structure end, the first structure end is in conductive contact with the busbar, and a second end of the first arc striking member extends to the first arc extinguishing plate that is in the direction of extension of the busbar among the plurality of arc extinguishing plates. The arc extinguishing assembly can be suitable for protection of a high-voltage alternating current or direct current power distribution network, and has the advantage of rapid arc extinguishing.

Classes IPC  ?

• H01H 33/08 - Éléments fixes pour restreindre ou subdiviser l'arc, p. ex. plaques-barrières
• H01H 33/04 - Moyens pour éteindre ou empêcher des arcs entre organes traversés par le courant

Abrégé

The present application provides a circular stator lamination, a stator core, a motor, a powertrain and an electric vehicle. The circular stator lamination comprises an inner circumferential surface and an outer circumferential surface, the inner circumferential surface and the outer circumferential surface are distributed opposite to each other along the radial direction of the stator lamination, the outer circumferential surface comprises a plurality of protrusions, and the plurality of protrusions are arranged at intervals along the circumferential direction of the stator lamination; the circular stator lamination further comprises a first end surface and a second end surface, the first end surface and the second end surface are distributed opposite to each other along the axial direction of the stator lamination, at least one of the first end surface or the second end surface comprises a plurality of slots, the plurality of slots are distributed at intervals along the circumferential direction of the stator lamination, the opening of each slot faces the axis of the stator lamination, and each slot runs through the inner circumferential surface and the outer circumferential surface along the radial direction of the stator lamination. The circular stator lamination, the stator core, the motor, the powertrain and the electric vehicle provided by the present application can improve the motor efficiency and mitigate the problem of serious magnetic flux leakage of the stator core.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 3/52 - Fixation des enroulements de pôles saillants ou de leurs connexions
• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p. ex. avec des conducteurs en barre disposés dans des encoches
• H02K 3/48 - Fixation des enroulements sur la structure statorique ou rotorique dans les encoches
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements

Abrégé

An under-vehicle connection gun (100), an on-vehicle connection socket (200), and a liquid cooling apparatus. The under-vehicle connection gun (100) is used for plugging into the on-vehicle connection socket (200) arranged on a vehicle (1). The under-vehicle connection gun (100) comprises a plug-in end, the plug-in end comprising a liquid supply plug (103) and a liquid return plug (104), and the liquid supply plug (103) and the liquid return plug (104) being connected to the liquid cooling unit (2) by means of a pipeline. The plug-in end further comprises a first connection confirmation terminal (102), one end of the first connection confirmation terminal (102) being used for connecting to a first connection confirmation socket (202) of the on-vehicle connection socket (200), and the other end of the first connection confirmation terminal (102) being used for connecting to a first connection confirmation circuit. When the first connection confirmation terminal (102) is connected to the first connection confirmation socket (202), the first connection confirmation circuit and a connection confirmation circuit connected to the first connection confirmation socket (202) form a first connection confirmation loop, and the first connection confirmation loop is used for confirming the state of connection of the liquid supply plug (103) and liquid return plug (104) with the on-vehicle connection socket (200). The liquid cooling unit (2) can be used to improve the heat dissipation capability of the battery management system for the power battery of the vehicle (1), meeting heat dissipation requirements for battery super-charging.

Classes IPC  ?

• B60L 53/16 - Connecteurs, p. ex. fiches ou prises, spécialement adaptés pour recharger des véhicules électriques
• B60L 53/302 - Refroidissement des équipements de charge
• H01R 13/62 - Moyens pour faciliter l'engagement ou la séparation des pièces de couplage ou pour les maintenir engagées
• H01R 13/627 - Fixation du type à action brusque
• H01R 13/629 - Moyens additionnels pour faciliter l'engagement ou la séparation des pièces de couplage, p. ex. moyens pour aligner ou guider, leviers, pression de gaz

Abrégé

A composite connecting gun applied to a charging device, a composite connecting socket, and a charging device. The composite connecting gun is connected to a composite connecting socket in a plugging manner provided on a vehicle (1); the composite connecting gun comprises a plug-in end; the plug-in end comprises a liquid supply plug (103), a liquid return plug (104), and a charging plug (107); the liquid supply plug (103) and the liquid return plug (104) are connected to a liquid cooling unit (2) by means of a pipeline; the charging plug (107) is connected to a power supply module of a charging device; the plug-in end further comprises a first connecting confirmation terminal (102) and a second connecting confirmation terminal (108); one end of the first connecting confirmation terminal (102) is connected to a first connecting confirmation socket (202) of the composite connecting socket, and the other end of the first connecting confirmation terminal (102) is connected to a first connecting confirmation circuit; and one end of the second connecting confirmation terminal (108) is connected to a second connecting confirmation socket (208) of the composite connecting socket, and the other end of the second connecting confirmation terminal (108) is connected to a second connecting confirmation circuit. By means of the liquid cooling unit (2), the heat dissipation capability of a battery management system for a power battery of the vehicle (1) is improved, thereby meeting the super-charging heat dissipation requirement of the battery.

Classes IPC  ?

• B60L 53/16 - Connecteurs, p. ex. fiches ou prises, spécialement adaptés pour recharger des véhicules électriques
• B60L 53/14 - Transfert d'énergie par conduction

Abrégé

The present application provides a circuit breaker, a power converter, an energy storage system, and an electric vehicle. The circuit breaker comprises two busbars and two arc chutes. The two busbars are arranged in a first direction. The two arc chutes are arranged at an interval in the first direction, and the two arc chutes are respectively arranged in a second direction with the two busbars. Each arc chute comprises an arc plate. In the second direction, the distance between the arc plate and the corresponding busbar is the maximum distance between one of the arc chutes and the corresponding busbar. An arc plate in one of the arc chutes is connected to an arc plate in the other arc chute. When the circuit breaker is closed, the two busbars are connected; and when the circuit breaker is opened, the ends of the two busbars close to each other in the first direction are respectively bent towards the two arc chutes, so that the two busbars are disconnected to form an arc, and the two arc chutes are used for extinguishing the arc. The circuit breaker has high breaking capacity and is suitable for a high-voltage electric power system.

Classes IPC  ?

• H01H 9/30 - Moyens pour éteindre ou empêcher des arcs entre pièces traversées par le courant
• H01H 9/02 - Supports, enveloppes ou capots
• H01H 1/58 - Connexions électriques avec ou entre contactsBornes
• H01H 73/18 - Moyens pour éteindre ou supprimer un arc
• H01H 71/02 - BoîtiersEnveloppesSoclesGarnitures

Abrégé

A control pilot circuit applied to an electric vehicle and a charging pile. The control pilot circuit comprises a connection confirmation circuit; the electric vehicle comprises a liquid cooling socket, a direct current socket, and a connection confirmation socket; the charging pile comprises a liquid cooling plug, a direct current plug, and a connection confirmation plug; when the liquid cooling plug is connected to the liquid cooling socket and the direct current plug is connected to the direct current socket, a vehicle end connection confirmation circuit and a pile end connection confirmation circuit form a loop, and the voltage of a detection point in the loop is used for indicating a state of connection between the liquid cooling plug and the liquid cooling socket and a state of connection between the direct current plug and the direct current socket. The problem of heat dissipation of a power battery during charging can be solved, and the charging power of a charging device for the power battery can be improved.

Classes IPC  ?

• B60L 53/302 - Refroidissement des équipements de charge
• B60L 58/26 - Procédés ou agencements de circuits pour surveiller ou commander des batteries ou des piles à combustible, spécialement adaptés pour des véhicules électriques pour la surveillance et la commande des batteries pour la commande de la température des batteries par refroidissement
• B60L 53/16 - Connecteurs, p. ex. fiches ou prises, spécialement adaptés pour recharger des véhicules électriques
• B60L 53/31 - Colonnes de charge spécialement adaptées aux véhicules électriques

Abrégé

An onboard charging connection apparatus, an electric vehicle, a liquid cooling device, and a charging pile, the onboard charging connection apparatus being used for electric vehicles. The onboard charging connection apparatus comprises: a first vehicle socket and a liquid cooling connection confirmation circuit; and the first vehicle socket comprises a liquid cooling socket and a liquid cooling connection confirmation socket. One end of the liquid cooling socket is used for being connected to a liquid cooling plug of a liquid cooling connector, and the other end of the liquid cooling socket is connected to a thermal management system of a power battery by means of a liquid cooling pipeline. One end of the liquid cooling connection confirmation socket is used for being connected to a liquid cooling connection confirmation plug of the liquid cooling connector, and the other end of the liquid cooling connection confirmation socket is connected to the liquid cooling connection confirmation circuit. The onboard charging connection apparatus is used for determining the connection state of the liquid cooling socket and the liquid cooling plug via the liquid cooling connection confirmation circuit; the problem of heat dissipation during charging of power batteries can be solved, and charging power provided by charging apparatuses to power batteries can be improved.

Classes IPC  ?

• B60L 53/302 - Refroidissement des équipements de charge
• B60L 53/16 - Connecteurs, p. ex. fiches ou prises, spécialement adaptés pour recharger des véhicules électriques
• B60L 53/31 - Colonnes de charge spécialement adaptées aux véhicules électriques
• B60L 58/26 - Procédés ou agencements de circuits pour surveiller ou commander des batteries ou des piles à combustible, spécialement adaptés pour des véhicules électriques pour la surveillance et la commande des batteries pour la commande de la température des batteries par refroidissement

Abrégé

The invention provides an onboard charging connection apparatus, an electric vehicle, a charging connector, and a charging pile; the onboard charging connection apparatus comprises a vehicle socket and a connection confirmation circuit; and the vehicle socket comprises a direct current socket, a liquid cooling socket, and a connection confirmation socket. The onboard charging connection apparatus is used for determining, via the connection confirmation circuit, the connection state of the direct current socket with a direct current plug, and for determining the connection state of the liquid cooling socket with a liquid cooling plug; and when the liquid cooling socket is successfully connected to the liquid cooling plug and the direct current socket is successfully connected to the direct current plug, the direct current socket is used for receiving a direct current to charge a power battery. The present application can solve the problem of heat dissipation during charging of power batteries, and charging power provided by charging apparatuses to power batteries can be improved.

Classes IPC  ?

• B60L 53/302 - Refroidissement des équipements de charge
• B60L 58/26 - Procédés ou agencements de circuits pour surveiller ou commander des batteries ou des piles à combustible, spécialement adaptés pour des véhicules électriques pour la surveillance et la commande des batteries pour la commande de la température des batteries par refroidissement
• B60L 53/16 - Connecteurs, p. ex. fiches ou prises, spécialement adaptés pour recharger des véhicules électriques
• B60L 53/31 - Colonnes de charge spécialement adaptées aux véhicules électriques

Abrégé

The present application provides an energy storage device and a photovoltaic energy storage system. The energy storage device comprises a thermal management module, a battery module, a first power unit, a second power unit, and a radiator module. The thermal management module comprises a shell, and a multi-way valve, a first evaporator and a condenser which are arranged in the shell, and the shell comprises a plurality of first interfaces. Two coolant liquid ports of the first evaporator are connected to the multi-way valve, and two coolant liquid ports of the condenser are connected between the multi-way valve and one first interface. The battery module comprises a battery heat exchange plate, the first power unit comprises a first power circuit heat exchange plate, the second power unit comprises a second power circuit heat exchange plate, and the radiator module comprises a radiator. The battery heat exchange plate, the first power circuit heat exchange plate, the second power circuit heat exchange plate, and the radiator are connected to the multi-way valve respectively by means of the corresponding first interfaces. By using the energy storage device, the temperatures of a battery and two power circuit heat exchange plates can be efficiently regulated and controlled.

Classes IPC  ?

• H01M 10/613 - Refroidissement ou maintien du froid

Abrégé

Provided is an electric vehicle (300). The electric vehicle (300) comprises a power battery (320) and a thermal management system (330). The thermal management system (330) comprises a first cooling circuit (331), a second cooling circuit (332), a first heat exchanger (333), and a cooling assembly (334). The first cooling circuit (331), by means of the first heat exchanger (333), exchanges heat with the second cooling circuit (332). The second cooling circuit (332) is used for cooling the power battery (320). The cooling assembly (334) comprises a cooling liquid intake line (3341) and a cooling liquid discharge line (3342). The cooling liquid intake line (3341) and the cooling liquid discharge line (3342) are each connected to an external liquid cooling device, so as to form a third cooling circuit with the external liquid cooling device. Therefore, when the power battery (320) performs high-power charging, the thermal management system (330) can cool the power battery (320) by using a liquid phase cooling medium transmitted by the external liquid cooling device in the third cooling circuit, helping to satisfy heat dissipation requirements of the power battery (320) during high-power charging, so that the electric vehicle (300) can perform high-power charging, reducing the charging duration of the electric vehicle (300).

Classes IPC  ?

• B60L 53/302 - Refroidissement des équipements de charge
• B60L 58/26 - Procédés ou agencements de circuits pour surveiller ou commander des batteries ou des piles à combustible, spécialement adaptés pour des véhicules électriques pour la surveillance et la commande des batteries pour la commande de la température des batteries par refroidissement
• B60L 53/16 - Connecteurs, p. ex. fiches ou prises, spécialement adaptés pour recharger des véhicules électriques
• B60L 53/31 - Colonnes de charge spécialement adaptées aux véhicules électriques

Abrégé

Provided in the embodiments of the present application are a charging system and an on-board charging connection apparatus. The charging system comprises a charging pile, and an on-board charging connection apparatus applied to an electric vehicle, wherein the charging pile comprises a charging device and a liquid cooling device, the charging device can output a direct current to the electric vehicle by means of the on-board charging connection apparatus, and a liquid-phase cooling medium in the liquid cooling device can be transferred to a thermal management system of a traction battery in the electric vehicle by means of the on-board charging connection apparatus. Therefore, when high-power charging is performed on a traction battery of an electric vehicle, a liquid-phase cooling medium can also be transferred to a thermal management system of the traction battery, which is conducive to meeting the heat dissipation requirement of the traction battery during high-power charging, such that high-power charging can be performed on the electric vehicle, thereby shortening the duration of time taken to charge the electric vehicle.

Classes IPC  ?

• B60L 53/302 - Refroidissement des équipements de charge
• B60L 58/26 - Procédés ou agencements de circuits pour surveiller ou commander des batteries ou des piles à combustible, spécialement adaptés pour des véhicules électriques pour la surveillance et la commande des batteries pour la commande de la température des batteries par refroidissement
• B60L 53/16 - Connecteurs, p. ex. fiches ou prises, spécialement adaptés pour recharger des véhicules électriques
• B60L 53/60 - Surveillance et commande des stations de charge
• B60L 53/31 - Colonnes de charge spécialement adaptées aux véhicules électriques

Abrégé

A charging station (400), the charging station comprising a charging device (410) and a liquid cooling device (420), a station-end charging output interface (411) of the charging device being used for electrical connection to an electric vehicle (300) so as to transmit a direct current to the electric vehicle. The liquid cooling device comprises a station-end liquid inlet/outlet (421), the station-end liquid inlet/outlet comprising a station-end liquid inlet interface (4211), a station-end liquid outlet interface (4212), and a station-end cooling connection confirmation CC interface (4213), the station-end liquid inlet interface being used for transmitting a liquid-phase cooling medium in the liquid cooling device to the electric vehicle, the station-end liquid inlet interface being used for receiving the liquid-phase cooling medium in the electric vehicle, and a voltage signal of the station-end cooling CC interface being used for indicating the state of connection of the station-end liquid inlet/outlet and the electric vehicle. When the charging device charges the electric vehicle at high power, the liquid cooling device cools the electric vehicle by transmitting the liquid-phase cooling medium to the electric vehicle, so that the requirement for heat dissipation of the power battery of the electric vehicle during high-power charging can be met.

Classes IPC  ?

• B60L 53/302 - Refroidissement des équipements de charge

Abrégé

The present application relates to the technical field of motors, and provides a motor in which a stator discharges a liquid for winding cooling, a powertrain, and an electric vehicle. The motor in which the stator discharges a liquid for winding cooling comprises an axial gap, two end plates, and multiple laminations; the multiple laminations are arranged between the two end plates in the axial direction of the motor; one end plate comprises multiple liquid outlets, the multiple liquid outlets are arranged at intervals in the circumferential direction of the motor, and the axial gap is used for communicating at least two adjacent liquid outlets; the axial gap includes an axial gap between two laminations, and at least one lamination is arranged between the two laminations in the axial direction of the motor, or includes an axial gap between one lamination and an end plate, and the end plate is arranged adjacent to one lamination in the axial direction of the motor. After a cooling working medium enters the motor, the cooling working medium can flow in the circumferential direction of the motor, thereby optimizing the heat dissipation effect of the motor.

Classes IPC  ?

• H02K 1/20 - Parties fixes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement
• H02K 9/193 - Dispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p. ex. de l'huile avec des moyens de remplissage de l'agent de refroidissementDispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p. ex. de l'huile avec des moyens pour empêcher les fuites de l'agent de refroidissement
• H02K 5/20 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des canaux ou des conduits pour la circulation d'un agent de refroidissement
• H02K 7/116 - Association structurelle avec des embrayages, des freins, des engrenages, des poulies ou des démarreurs mécaniques avec des engrenages
• B60K 1/00 - Agencement ou montage des ensembles de propulsion électriques
• B60K 11/02 - Dispositions des ensembles de propulsion relatives au refroidissement avec liquide de refroidissement

Abrégé

The present application relates to the technical field of motors, and provides a stator lamination having circumferential flow channels, a motor, a powertrain, and an electric vehicle. The stator lamination comprises a plurality of communication holes and a plurality of circumferential flow channels; in the axial direction of a stator, each communication hole and each circumferential flow channel pass through the stator lamination; in the circumferential direction of the stator, the plurality of communication holes are arranged at intervals, the plurality of circumferential flow channels are arranged at intervals, and each circumferential flow channel is communicated with at least two communication holes; and in the radial direction of the stator, the distance between the center of the circumferential flow channel and the center of the stator lamination is greater than the distance between the center of the communication hole and the center of the stator lamination. A cooling working medium can flow in the circumferential direction of the motor after entering the motor, optimizing the heat dissipation effect on the motor.

Classes IPC  ?

• H02K 1/20 - Parties fixes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement
• H02K 9/193 - Dispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p. ex. de l'huile avec des moyens de remplissage de l'agent de refroidissementDispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p. ex. de l'huile avec des moyens pour empêcher les fuites de l'agent de refroidissement
• H02K 5/20 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des canaux ou des conduits pour la circulation d'un agent de refroidissement
• H02K 7/116 - Association structurelle avec des embrayages, des freins, des engrenages, des poulies ou des démarreurs mécaniques avec des engrenages
• B60K 17/12 - Agencement ou montage des transmissions sur les véhicules caractérisées par la disposition, l'emplacement ou le type de mécanisme de transmission électrique

Abrégé

A powertrain (10) and an electric vehicle (1). The powertrain (10) comprises a die-cast housing (100) and a heat exchanger (400). The die-cast housing (100) comprises a speed reducer accommodating cavity (111) formed inside the die-cast housing (100) by die-casting and four holes (170). The speed reducer accommodating cavity (111) is used for accommodating a speed reducer (200). Among said holes, two holes (170) are used for being communicated with a liquid channel in the heat exchanger (400), and the other two holes (170) are used for being communicated with an oil channel in the heat exchanger (400); openings of the four holes (170) all face the heat exchanger (400). The speed reducer accommodating cavity (111), the four holes (170), and the heat exchanger (400) are arranged in a first direction. The first direction is perpendicular to the axial direction of a motor (300). The projections of the four holes (170) are located in the projection of the speed reducer accommodating cavity (111) in the radial direction of the motor (300). According to the solution, by forming the two holes (170) used for being communicated with the liquid channel in the heat exchanger (400) in the die-cast housing, instead of forming the two holes above the heat exchanger (400), the occupied space above the heat exchanger is reduced, and the overall layout space of the powertrain (10) is reduced, thereby solving the problem that in some vehicle models, the layout is not feasible due to small space.

Classes IPC  ?

• F16H 57/04 - Caractéristiques relatives à la lubrification ou au refroidissement
• F16H 57/023 - Montage ou installation d'engrenages ou d'arbres dans les boîtes de vitesses, p. ex. procédés ou moyens d'assemblage
• F16H 57/02 - Boîtes de vitessesMontage de la transmission à l'intérieur

Abrégé

Embodiments of the present application disclose a drive chip, a power chip, and a switch mode power supply. The drive chip comprises a drive circuit and a current generation circuit, and the current generation circuit comprises a sampling circuit, a slope control circuit, and a current output circuit. The sampling circuit controls the current output circuit to output a rectifier diode sampling current in a stage in which a rectifier diode is connected. On the basis of the rectifier diode sampling current outputted by the current output circuit in the stage in which the rectifier diode is connected in a k-th control period and a k-th main power transistor analog current outputted by the current output circuit in a stage in which a main power transistor is connected, the slope control circuit controls the current output circuit to output a (k+1)-th main power transistor analog current in the stage in which the main power transistor is connected in a (k+1)-th control period. Due to the foregoing configuration, on the basis of the rectifier diode sampling current and the main power transistor analog current, the drive circuit controls the connection and disconnection of the main power transistor and the rectifier diode, and the precision of control of the main power transistor and the rectifier diode is improved.

Classes IPC  ?

• H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques

Abrégé

The application provides a control guide circuit applied to an electric vehicle and liquid cooling device. The control guide circuit comprises a connection confirmation circuit. The electric vehicle comprises a liquid cooling socket and a liquid cooling connection confirmation socket. The liquid cooling device comprises a liquid cooling plug and a liquid cooling connection confirmation plug. When the liquid cooling plug is connected to the liquid cooling socket, a vehicle end connection confirmation circuit and a pile end connection confirmation circuit form a loop, and the voltage of a detection point in the loop is used for indicating the connection state of the liquid cooling plug and the liquid cooling socket. The present application can solve the heat dissipation problem during charging of the power battery, and improve the charging power of a charging apparatus for the power battery.

Classes IPC  ?

• B60L 53/302 - Refroidissement des équipements de charge
• B60L 58/26 - Procédés ou agencements de circuits pour surveiller ou commander des batteries ou des piles à combustible, spécialement adaptés pour des véhicules électriques pour la surveillance et la commande des batteries pour la commande de la température des batteries par refroidissement
• B60L 53/16 - Connecteurs, p. ex. fiches ou prises, spécialement adaptés pour recharger des véhicules électriques
• B60L 53/60 - Surveillance et commande des stations de charge
• B60L 53/31 - Colonnes de charge spécialement adaptées aux véhicules électriques

Abrégé

A vehicle-mounted charging connection apparatus, an electric vehicle, a liquid cooling device, and a charge point. The vehicle-mounted charging connection apparatus comprises a first vehicle socket and a liquid cooling connection confirmation circuit. The vehicle-mounted charging connection apparatus is used for: determining, by means of the liquid cooling connection confirmation circuit, a connection state between a liquid cooling socket and a liquid cooling plug; and in response to the liquid cooling socket being successfully connected to the liquid cooling plug, sending to a liquid cooling device a message for indicating that the liquid cooling socket and the liquid cooling plug have been successfully connected. Thus, the problem of heat dissipation during charging of a power battery can be solved, and the charging power of the charging apparatus for the power battery is increased.

Classes IPC  ?

• B60L 53/302 - Refroidissement des équipements de charge
• B60L 53/16 - Connecteurs, p. ex. fiches ou prises, spécialement adaptés pour recharger des véhicules électriques
• B60L 53/31 - Colonnes de charge spécialement adaptées aux véhicules électriques
• B60L 58/26 - Procédés ou agencements de circuits pour surveiller ou commander des batteries ou des piles à combustible, spécialement adaptés pour des véhicules électriques pour la surveillance et la commande des batteries pour la commande de la température des batteries par refroidissement

Abrégé

Provided in the embodiments of the present application are a charging method. The charging method comprises: determining a connection state between an electric vehicle and a charging device, and a connection state between the electric vehicle and an out-of-vehicle liquid cooling device; and on the basis that the electric vehicle has been connected to the charging device and that the electric vehicle has been connected to the out-of-vehicle liquid cooling device, sending an overcharging request message to the charging device, wherein the overcharging request message is used for instructing the charging device to charge the electric vehicle at a first output power, and the first output power is greater than or equal to a preset power. In the charging method provided in the embodiments of the present application, when the charging device performs high-power charging on the electric vehicle, the out-of-vehicle liquid cooling device can cool the electric vehicle by means of delivering a liquid-phase cooling medium to the electric vehicle, which is conducive to meeting a heat dissipation requirement of a traction battery of the electric vehicle during high-power charging, so that high-power charging can be performed on the electric vehicle, thereby reducing the charging duration of the electric vehicle.

Classes IPC  ?

• B60L 53/302 - Refroidissement des équipements de charge
• B60L 58/26 - Procédés ou agencements de circuits pour surveiller ou commander des batteries ou des piles à combustible, spécialement adaptés pour des véhicules électriques pour la surveillance et la commande des batteries pour la commande de la température des batteries par refroidissement

Abrégé

Provided in the present application are an all-in-one onboard power supply apparatus, an electric motor controller, and a power assembly, which are used for integrating a power control circuit of a compressor and a power control circuit of a heater, so as to save on the hardware costs. The onboard power supply apparatus comprises a housing, and a power conversion circuit, a switch module and a compressor electric motor drive circuit, which are accommodated in the housing, wherein the surface of the housing is provided with a compressor electric motor interface and a heating module interface; the power conversion circuit is used for receiving an alternating current and outputting a first direct current to charge a traction battery or supply power to the compressor electric motor drive circuit; the compressor electric motor drive circuit comprises three bridge arms, which are connected in parallel, two ends of the three bridge arms being used for receiving the first direct current or receiving the power supply of the traction battery, a bridge arm midpoint of each bridge arm being used for being connected to a one-phase winding of a compressor electric motor by means of the compressor electric motor interface, and a bridge arm midpoint of at least one bridge arm being used for driving a heating module by means of the heating module interface; and the switch module is used for turning on or turning off a connection between the bridge arm midpoint of the at least one bridge arm and the heating module.

Classes IPC  ?

• B60L 1/00 - Fourniture de l'énergie électrique à l'équipement auxiliaire des véhicules à traction électrique

Abrégé

A power assembly (10), comprising a die-cast housing (100) and a speed reducer end cover (130), wherein the die-cast housing (100) comprises a speed reducer accommodating cavity (111), an electric motor accommodating cavity (121) and a speed reducer oil channel protrusion (160) which are integrally die-cast; and the speed reducer accommodating cavity (111) and the electric motor accommodating cavity (121) are configured to accommodate a speed reducer (200) and an electric motor (300), respectively. The speed reducer oil channel protrusion (160) is configured to be embedded into an internal oil channel of the speed reducer end cover (130), a protrusion oil hole (162) and an internal oil channel of the speed reducer end cover (130) are connected to each other by means of a mutually-embedded structure, the speed reducer oil channel protrusion (160) further comprises the protrusion oil hole (162), an opening of the protrusion oil hole (162) faces the speed reducer end cover (130), and the protrusion oil hole (162) is configured to be in direct communication with the internal oil channel of the speed reducer end cover (130) and to be in communication with the electric motor accommodating cavity (121) by means of the internal oil channel of the die-cast housing, so as to output cooling oil to the speed reducer or an electric motor shaft system for cooling and lubrication. In the power assembly, it is not necessary to additionally use a sealing ring and a sealing gasket; thus, a requirement for reducing the number of parts is met. Further provided is an electric vehicle.

Classes IPC  ?

• F16H 57/04 - Caractéristiques relatives à la lubrification ou au refroidissement
• F16H 57/023 - Montage ou installation d'engrenages ou d'arbres dans les boîtes de vitesses, p. ex. procédés ou moyens d'assemblage
• F16H 57/02 - Boîtes de vitessesMontage de la transmission à l'intérieur

Abrégé

The present application provides a photovoltaic inverter, comprising a housing, a main circuit board, a positive connector, a negative connector, an upper plate support and a convergence conductor. One end of the positive connector is connected between the upper plate support and the main circuit board, and one end of the negative connector is electrically connected to the main circuit board by means of the convergence conductor. The positive connector or the negative connector comprises an insulating base and a metal inserting piece, one end of the insulating base is located in the housing, the other end of the insulating base is located outside the housing, and the positive connector or the negative connector is fixed to the housing by means of the insulating base. The insulating base is of a hollow tubular structure, the metal inserting piece is wrapped in the insulating base, and the metal inserting piece comprises an interface part, a fixing part and a contact part. The interface part is configured to be connected to a photovoltaic assembly, the contact part is of a flat structure, the contact part is configured to be connected to the main circuit board or the convergence conductor in a stacked mode, and the fixing part is configured to be mechanically fixed to the insulating base. The connectors are electrically connected to the circuit board by means of the upper plate support, such that the installation process can be simplified, and the connection reliability is improved.

Classes IPC  ?

• H01R 13/00 - Détails de dispositifs de couplage des types couverts par les groupes ou

Abrégé

A heat exchange apparatus and an energy storage apparatus, relating to the technical field of cooling and dehumidification devices. The heat exchange apparatus is used for being arranged in an energy storage apparatus, and comprises a heat exchanger and a partition member. The heat exchanger is internally provided with a refrigerant channel; the partition member is located in the heat exchanger; the partition member divides the heat exchanger into a first heat exchange portion and a second heat exchange portion, and divides the refrigerant channel into a first refrigerant channel and a second refrigerant channel; the first heat exchange portion is used for dissipating heat from an energy storage battery; the second heat exchange portion is located outside the energy storage battery and used for reducing the air humidity in an energy storage cabinet; and the first refrigerant channel is separately communicated with a first refrigerant inlet pipe and a first refrigerant output pipe, and the second refrigerant channel is separately communicated with a second refrigerant inlet pipe and a second refrigerant outlet pipe. In the present application, the heat exchanger is divided into two heat exchange portions by means of the partition member so as to form a cooling module for the energy storage battery and a dehumidification module for the energy storage battery, respectively, such that dual cooling of the temperature of the energy storage battery and the humidity of the environment in which the energy storage battery is located can be realized by means of a single heat exchange component.

Classes IPC  ?

• H01M 10/613 - Refroidissement ou maintien du froid

Abrégé

Provided in the present application are a rotor punched sheet having protrusions, an electric motor rotor, an electric motor and a power assembly. The rotor punched sheet having protrusions comprises a center hole and a plurality of through holes, wherein the plurality of through holes are arranged around the center hole. The dimension of each through hole in a first direction is smaller than that of each through hole in a second direction, and each through hole comprises two hole walls, which are oppositely arranged in the first direction. One hole wall of one through hole comprises: a plurality of protrusions, which are spaced apart in the second direction, the length of each protrusion in the first direction being less than the spacing between the two hole walls; or a plurality of grooves, which are spaced apart in the second direction, each groove comprising a groove bottom and a groove opening, which are oppositely arranged in the first direction, and in the second direction, the dimension of the groove opening being greater than the dimension of the groove bottom. Since the hole wall is provided with the protrusions or grooves, gaps are formed between a magnet and the hole wall, thereby preventing the direct contact between the magnet and the hole wall, such that the phenomenon of a short circuit occurring between insulated punched sheets by means of the magnet is reduced, thereby reducing eddy current losses in an iron core, and thus the efficiency of an electric motor is improved.

Classes IPC  ?

• H02K 1/276 - Aimants encastrés dans le noyau magnétique, p. ex. aimants permanents internes [IPM]
• H02K 1/24 - Noyaux rotoriques à pôles saillants
• H02K 1/28 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor
• H02K 1/27 - Noyaux rotoriques à aimants permanents

Abrégé

An all-in-one power supply apparatus (100) for an electric vehicle, a power assembly, and an electric vehicle. The all-in-one power supply apparatus (100) comprises a housing (101), a first control circuit (102) accommodated in the housing (101), a second control circuit (103), a third control circuit (104), a first group of legs (105), a second group of legs (106), a third group of legs (107), and a fourth group of legs (108). The first control circuit (102) controls the first group of legs (105) to receive a first alternating current. The second control circuit (103) controls two ends of the second group of legs (106) to output a first direct current or receive power from a power battery (115). The third control circuit (104) controls the midpoints of the legs of the third group of legs (107) to output a second alternating current, and controls an output terminal of the fourth group of legs (108) to output a second direct current. By means of sharing leg circuits and control circuits, the use of components is reduced, thus lowering costs, reducing the size and weight, and making the all-in-one power supply apparatus (100) more compact. The shared control circuits can also improve the cooperative capability between components, thereby enabling rapid responses.

Classes IPC  ?

• B60L 1/00 - Fourniture de l'énergie électrique à l'équipement auxiliaire des véhicules à traction électrique
• B60L 15/00 - Procédés, circuits ou dispositifs pour commander la propulsion des véhicules à traction électrique, p. ex. commande de la vitesse des moteurs de traction en vue de réaliser des performances désiréesAdaptation sur les véhicules à traction électrique de l'installation de commande à distance à partir d'un endroit fixe, de différents endroits du véhicule ou de différents véhicules d'un même train
• B60L 53/22 - Détails de structure ou aménagements des convertisseurs de charge spécialement adaptés pour recharger des véhicules électriques
• B60L 50/60 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible utilisant de l'énergie fournie par des batteries
• H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
• H02M 1/00 - Détails d'appareils pour transformation
• H02J 7/02 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries pour la charge des batteries par réseaux à courant alternatif au moyen de convertisseurs

Abrégé

The present application provides a micro inverter and a current measurement method. The micro inverter comprises: a primary-side circuit, which is adapted to be connected to a photovoltaic module and converts a direct current outputted by the photovoltaic module into an alternating current; a transformer, a primary-side winding of the transformer being coupled to the primary-side circuit, and the transformer being used for stepping up or stepping down of the voltage of the alternating current converted by the primary-side circuit; a secondary-side circuit, a secondary-side winding of the transformer being coupled to the secondary-side circuit, and the secondary-side circuit being used for converting the alternating current after voltage stepping up or stepping down into a power frequency alternating current and outputting the power frequency alternating current to a power grid by means of an output port; and a current measurement circuit, comprising a current transformer, the current transformer being located between the secondary-side winding of the transformer and the secondary-side circuit, and the current measurement circuit being used for collecting a high-frequency alternating current of the secondary-side winding by means of the current transformer, and on the basis of the high-frequency alternating current, measuring the alternating current outputted by the output port. The device in the alternating current measurement circuit in the present application has a small size and low cost, and is beneficial to being used in the micro inverter.

Classes IPC  ?

• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
• G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
• G01R 15/20 - Adaptations fournissant une isolation en tension ou en courant, p. ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs galvano-magnétiques, p. ex. des dispositifs à effet Hall
• H02M 7/5395 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur avec commande automatique de la forme d'onde ou de la fréquence de sortie par modulation de largeur d'impulsions

Abrégé

The present application provides a power module, a processing method therefor and a power device, and is characterized in that the power module comprises a chip body, a first electrode layer and a metal layer, wherein the first electrode layer is connected to the chip body, the projection of the first electrode layer on a first plane is located within the projection range of the chip body on the first plane, the first plane is parallel to the contact surface between the chip body and the first electrode layer, the metal layer coats the periphery of the first electrode layer, the surface of the metal layer close to the chip body is in contact with the chip body, and the projection of the chip body on the first plane does not exceed the projection range of a combination of the first electrode layer and the metal layer on the first plane. In the solution of the present application, the metal layer can coat the periphery of the first electrode layer, such that the back side of the chip body will be not exposed, so as to prevent the chip body from separating from a soldering layer, thus avoiding the failure of the power module, and improving the stability of the power module.

Classes IPC  ?

• H01L 23/31 - Encapsulations, p. ex. couches d’encapsulation, revêtements caractérisées par leur disposition
• H01L 23/48 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p. ex. fils de connexion ou bornes

Abrégé

Provided in the present application are a power conversion apparatus and a control module. The power conversion apparatus comprises a DC/DC conversion circuit and a control module. The DC/DC conversion circuit comprises an inverter circuit, a resonant unit and a rectifier circuit, wherein the inverter circuit comprises a plurality of bridge arms, and each bridge arm comprises a plurality of switching tubes. The control module is used for controlling the plurality of switching tubes to work for a first duration with a first frequency as a switching frequency, and then controlling the switching frequency to be switched to a second frequency; and controlling the plurality of switching tubes to work for a second duration with the second frequency as the switching frequency, wherein the first frequency is greater than the second frequency, and the first duration is shorter than the second duration. In the present application, a switching tube is made to work for a short duration when the switching frequency is large and to work for a long duration when the switching frequency is small, such that an output voltage can be prevented from changing overly fast or slow, thereby improving the flexibility and stability of a power conversion apparatus during use.

Classes IPC  ?

• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

The present application provides a thermal management system, an energy storage system, and a photovoltaic inverter system. The thermal management system comprises a coolant system, a refrigerant system, a heat exchange part, and a bearing part. The coolant system comprises a coolant flow channel plate and a plurality of coolant end components. The refrigerant system comprises a refrigerant flow channel plate and a plurality of refrigerant end components. The heat exchange part is configured to perform heat exchange between the coolant system and the refrigerant system. The plurality of coolant end components and the refrigerant flow channel plate are mounted on a same side of the coolant flow channel plate. The bearing part is fastened on the coolant flow channel plate, and the bearing part comprises a mounting through hole. The parts of the thermal management system are integrally arranged, so that the complexity of mounting and maintenance can be reduced. By means of using the coolant flow channel plate that is easy to process and has a low cost as a mounting substrate, mounting a plurality of parts of a coolant circulation system and the refrigerant system on the mounting substrate, and independently configuring a metallic bearing part, the dimension of the refrigerant flow channel plate can be reduced, and further the processing difficulty and cost of the refrigerant flow channel plate are reduced.

Classes IPC  ?

• H01M 10/63 - Systèmes de commande
• H02S 40/42 - Moyens de refroidissement

Abrégé

The present application relates to the technical field of capacitors, and particularly relates to a capacitor module and a power converter. The capacitor module comprises a housing and a capacitor core pack assembly, wherein the housing comprises an accommodating cavity having an opening at one end, and the accommodating cavity is used for accommodating the capacitor core pack assembly; and the capacitor core pack assembly comprises a plurality of capacitor core packs, there is a gap between every two adjacent capacitor core packs, a cathode foil comprised in each capacitor core pack is partially exposed from the surface of the capacitor core pack, the exposed portion of the cathode foil is located at the end of the capacitor core pack that is away from the opening of the housing, and the exposed portion of the cathode foil is in contact with the housing, so as to transfer to the housing heat generated by the capacitor core pack. In the capacitor module of the present application, a plurality of capacitor core packs are integrated into one accommodating cavity, thereby reducing the volume of the capacitor module.

Classes IPC  ?

• H01G 2/10 - BoîtiersEncapsulations
• H01G 2/08 - Dispositions de réfrigérationDispositions de chauffageDispositions de ventilation
• H01G 4/228 - Bornes

Abrégé

Provided in the present application are a flat-wire winding having welding faces on folded line segments, a flat-wire electric motor and a stator, and a power assembly. The axial dimension of the flat-wire electric motor can be reduced. The stator of a flat-wire electric motor comprises a stator core and a stator winding, wherein the stator winding comprises a plurality of flat-wire windings, each flat-wire winding comprises at least one wire segment, and each wire segment comprises a straight line segment and two folded line segments, the straight line segment being configured to be embedded into a stator slot of the stator core in the flat-wire electric motor, and the folded line segments being configured to be exposed out of stator slots. The extension direction of each folded line segment intersects the extension direction of the straight line segment, and the extension directions of the two folded line segments are different from each other. The end portion of at least one folded line segment away from the straight line segment comprises a welding face, and the cross-sectional area of the end portion is less than the cross-sectional area of the straight line segment and the cross-sectional area of each folded line segment.

Classes IPC  ?

• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 3/50 - Fixation des têtes de bobines, des connexions équipotentielles ou des connexions s'y raccordant
• H02K 3/48 - Fixation des enroulements sur la structure statorique ou rotorique dans les encoches
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements

Abrégé

Provided in the present application are an isolated power supply chip and a power conversion apparatus. The isolated power supply chip comprises a transformer, a transmitting module and a plurality of receiving modules, wherein the transformer, the transmitting module and the plurality of receiving modules are packaged in the same housing; the transformer comprises a primary coil and a plurality of secondary coils; the transmitting module is used for transmitting to each secondary coil, by means of the primary coil, electric energy provided by a power supply; and each receiving module is used for transmitting the electric energy to a load by means of the connected secondary coil. Using the present application can provide multiple output ends that satisfy electrical isolation, and can achieve a high space utilization rate, improve the integration level and applicability of an apparatus, and reduce design costs.

Classes IPC  ?

• H02J 50/10 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif

Abrégé

The present disclosure relates to a device for operating an externally excited synchronous motor (EESM). The device comprises one or more exciters each being configured to provide a direct current and direct voltage of a first polarity and a direct current and direct voltage of a second polarity to a respective field winding of a rotor of the EESM. Each of the one or more exciters is configured to control the direction of magnetic flux generated by the respective field winding by providing the direct current and direct voltage of the first polarity or the direct current and direct voltage of the second polarity to the respective field winding. Further a motor arrangement is disclosed, the motor arrangement comprising such a device and an EESM.

Classes IPC  ?

• H02P 6/32 - Dispositions pour la commande de moteurs à champ enroulé, p. ex. de moteurs avec bobines d’excitation

Abrégé

The present application provides a power line communication apparatus, comprising a first modulation circuit configured in a first power device, a second modulation circuit configured in a second power device, and a grounding grid, wherein the first power device and the second power device are connected by means of power lines, the first modulation circuit and the second modulation circuit are coupled to the grounding grid respectively by means of a first signal coupling device and a second signal coupling device, and a modulation signal coupled by the first modulation circuit is transmitted to the second modulation circuit by means of the power lines and the grounding grid. The grounding grid which does not transmit electric energy is used as a signal transmission channel, such that no large current is generated, thereby improving the reliability of signal transmission.

Classes IPC  ?

• H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie

Abrégé

Provided in the present application are a photovoltaic inverter and a rotary switch. The photovoltaic inverter comprises a rotary switch, wherein the rotary switch comprises a switch body; the switch body comprises an insulating housing and a plurality of pins; the ends of the plurality of pins extending to the outside of the insulating housing are connected to a circuit board; the rotary switch is a multi-pole switch; each pole of the rotary switch comprises two pins; and a groove or a boss is provided on the insulating housing between two pins of two adjacent poles located on the same side; alternatively, a surrounding rib surrounds the portion of each pin located between the insulating housing and the circuit board. On the basis of the solution, the creepage distance and the electrical clearance between the pins of two adjacent poles are increased, thereby ensuring the electrical stability and performance of the photovoltaic inverter and facilitating the miniaturization of the photovoltaic inverter and the rotary switch.

Classes IPC  ?

• H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
• H02M 7/42 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité
• H02S 40/32 - Composants électriques comprenant un onduleur CC/CA associé au module PV lui-même, p. ex. module CA
• H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques Détails

Abrégé

Provided in the present application are an electric power measurement and control apparatus, and a power generation system. The electric power measurement and control apparatus is applied to the power generation system. The power generation system comprises a plurality of power conversion devices and a switch device, wherein the switch device is used for controlling connection and disconnection between the power conversion devices and a power grid, and output ends of the power conversion devices are connected to the power grid by means of a grid connection point. The electric power measurement and control apparatus comprises a first chip and a second chip, wherein an electric power measurement and control function module of the first chip acquires electrical data of the grid connection point, and sends a first control signal to the power conversion devices and the switch device on the basis of the electrical data of the grid connection point; an SCADA function module and an EMS function module of the second chip acquire electrical data of the plurality of power conversion devices and electrical data of the switch device, and generate a second control signal on the basis of the electrical data of the plurality of power conversion devices, the electrical data of the switch device and the electrical data of the grid connection point; and the electric power measurement and control function module sends a third control signal to the power conversion devices and the switch device on the basis of the second control signal. By using the present application, the cost and complexity of a power generation system can be reduced.

Classes IPC  ?

• H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p. ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseauCircuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p. ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau

Abrégé

The present application provides a photovoltaic inverter and a power conversion apparatus. The photovoltaic inverter comprises: a housing, a circuit board, a rotary switch, a photovoltaic connector, a signal connector, and an alternating-current connector, wherein the housing comprises a shell and a cover plate, the shell and the cover plate define an accommodating chamber, and the shell comprises a first side plate and a second side plate which are adjacent to each other; the circuit board is arranged in the accommodating chamber, and the rotary switch, the photovoltaic connector, the signal connector, and the alternating-current connector are all connected to the circuit board by means of rigid metal conductors; and the photovoltaic connector, the signal connector, and the alternating-current connector are installed on the first side plate, the signal connector is located between the photovoltaic connector and the alternating-current connector, and the rotary switch is installed on the second side plate. By directly connecting the rotary switch, the photovoltaic connector, the signal connector, the alternating-current connector and the like to the circuit board, the occupied space can be reduced, and the overall integration level is improved. In addition, the photovoltaic connector, the signal connector, and the alternating-current connector are arranged on the same side to facilitate installation and subsequent maintenance.

Classes IPC  ?

• H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
• H02M 7/42 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité
• H02K 5/02 - Enveloppes ou enceintes caractérisées par le matériau les constituant

Abrégé

Disclosed are a uniform-temperature battery cell, a battery pack and an energy storage system, relating to the field of energy, and aiming to improve the consistency of temperature of battery cells. The uniform-temperature battery cell comprises a casing; the casing comprises a bottom plate and at least one side plate, the bottom plate and the at least one side plate defining an accommodating space; the at least one side plate is provided with a plurality of heat pipes, each heat pipe extending to the bottom plate from the side plate; the plurality of heat pipes are arranged around the accommodating space, a phase-change working medium being provided in the heat pipes. In the present solution, when the uniform-temperature battery cell is charged or discharged, the phase-change working medium in the heat pipes oscillates and flows to transfer heat. Thus, the heat is continuously transferred to a low-temperature area of the casing from a high-temperature area of the casing, so as to remove local hot spots of the casing, thus ensuring the consistency of temperature of the battery cell, and solving the problems of uneven heat dissipation of the battery cell and poor consistency of temperature inside the battery cell.

Classes IPC  ?

• H01M 10/613 - Refroidissement ou maintien du froid

Abrégé

Provided in the present application are a vehicle, and an integrated driving-braking control apparatus and method for a vehicle, which are used for reducing driving and braking costs and the difficulty of arrangement in the vehicle. The vehicle comprises: a first electric motor brake and a second electric motor brake, which are arranged on a first side of the vehicle; a driving system, which is arranged on a second side of the vehicle and has an energy recovery function; and a control apparatus. The control apparatus is configured to control a left wheel of first-side wheels of the vehicle to be braked only by using the first electric motor brake, and control a right wheel of the first-side wheels of the vehicle to be braked only by using the second electric motor brake. The control apparatus is also configured to control a left wheel and a right wheel of second-side wheels of the vehicle to be braked only by using the driving system. The first side and the second side are a front side and a rear side, respectively.

Classes IPC  ?

• B60L 15/20 - Procédés, circuits ou dispositifs pour commander la propulsion des véhicules à traction électrique, p. ex. commande de la vitesse des moteurs de traction en vue de réaliser des performances désiréesAdaptation sur les véhicules à traction électrique de l'installation de commande à distance à partir d'un endroit fixe, de différents endroits du véhicule ou de différents véhicules d'un même train pour la commande du véhicule ou de son moteur en vue de réaliser des performances désirées, p. ex. vitesse, couple, variation programmée de la vitesse

Abrégé

The present application provides a power module and a manufacturing method therefor, and a power device. The power module comprises an integrated heat dissipation metal substrate, a chip, and a packaging member; the integrated heat dissipation metal substrate comprises a copper layer, a heat-conducting medium layer and a heat radiator; the copper layer, the heat-conducting medium layer and the heat radiator are stacked; the heat-conducting medium layer is connected between the copper layer and the heat radiator; the surface of the heat-conducting medium layer close to the copper layer is parallel to the surface of the heat-conducting medium layer close to the heat radiator; the chip is fixed on the side of the copper layer away from the heat radiator; and the packaging member is used for packaging the chip. In embodiments of the present application, by means of the integrated heat dissipation metal substrate, heat of the chip can be directly delivered from the chip to the integrated heat dissipation metal substrate, thereby reducing the thermal resistance on the heat dissipation path of the chip. In addition, according to the embodiments of the present application, the integrated heat dissipation metal substrate directly provide components and integrates the functions such as circuit connection, heat dissipation, and insulation, thereby omitting the assembly process of connection between a power device and a heat radiator.

Classes IPC  ?

• H01L 23/367 - Refroidissement facilité par la forme du dispositif
• H01L 23/373 - Refroidissement facilité par l'emploi de matériaux particuliers pour le dispositif
• H01L 23/473 - Dispositions pour le refroidissement, le chauffage, la ventilation ou la compensation de la température impliquant le transfert de chaleur par des fluides en circulation par une circulation de liquides
• H01L 23/488 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p. ex. fils de connexion ou bornes formées de structures soudées
• H01L 23/31 - Encapsulations, p. ex. couches d’encapsulation, revêtements caractérisées par leur disposition
• H01L 21/60 - Fixation des fils de connexion ou d'autres pièces conductrices, devant servir à conduire le courant vers le ou hors du dispositif pendant son fonctionnement
• H01L 21/50 - Assemblage de dispositifs à semi-conducteurs en utilisant des procédés ou des appareils non couverts par l'un uniquement des groupes ou
• H01L 21/56 - Encapsulations, p. ex. couches d’encapsulation, revêtements
• H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
• H02M 1/00 - Détails d'appareils pour transformation
• H02M 7/42 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité

Abrégé

Provided are a photovoltaic connector (1300) and an inverter (1000). The photovoltaic connector (1300) comprises a box body (100), a cover body (300) and terminals (200), the box body (100) and the cover body (300) define a first accommodating cavity (130), the cover body (300) is provided with first recessed portions (340), the box body (100) is provided with first through holes (111), a portion of each terminal (200) is located in the first accommodating cavity (130), and a portion of the terminal (200) extends out of the first accommodating cavity (130) through the corresponding first through hole (111); the box body (100) is further provided with second recessed portions (150), and the first recessed portions (340) and the second recessed portions (150) define second through holes (1300a) in communication with the first accommodating cavity (130); the surface of the cover body (300) facing the box body (100) is provided with a first sealing member (400), the first sealing member (400) is connected to the box body (100), the first sealing member (400) comprises a first sealing body (410) and first wrapping portions (420) connected to each other, and the first wrapping portions (420) are arranged in the first recessed portions (340); the surface of the box body (100) facing the cover body (300) is provided with a second sealing member (500), and the second sealing member (500) is connected to the cover body (300); and the second sealing member (500) comprises a second sealing body (510) and second wrapping portions (520) connected to each other, the second wrapping portions (520) are arranged in the second recessed portions (150), and the first wrapping portions (420) and the second wrapping portions (520) define sealing structures for wrapping cables (600).

Classes IPC  ?

• H01R 13/52 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes

Abrégé

An electric-motor controller (104), comprising an inverter circuit (120) and a control circuit (110), wherein the inverter circuit (120) comprises three switch tube bridge arms, two ends of each switch tube bridge arm being configured to receive power supplied from a traction battery (102), and the middle point of each switch tube bridge arm being configured to connect one of three phases of windings of an electric motor (130); in response to the absolute value of a torque demand indicated by a torque signal being greater than or equal to a preset torque value, the control circuit (110) controls the inverter circuit (120) to output a three-phase alternating current; and in response to the rotation speed of the electric motor (130) being less than a first rotation speed value or greater than a second rotation speed value and the absolute value of the torque demand indicated by the torque signal being less than the preset torque value, the control circuit (110) controls a plurality of switch tubes in the inverter circuit (120) to turn off. Further disclosed are an electric drive system and a vehicle (100). The electric-motor controller can achieve, without manual intervention, a torque output effect that meets a driver's driving intent, and can reduce the energy consumption of an electric motor, thus facilitating a reduction in the energy consumption of the whole vehicle, and prolonging the endurance of the whole vehicle.

Classes IPC  ?

• B60L 15/20 - Procédés, circuits ou dispositifs pour commander la propulsion des véhicules à traction électrique, p. ex. commande de la vitesse des moteurs de traction en vue de réaliser des performances désiréesAdaptation sur les véhicules à traction électrique de l'installation de commande à distance à partir d'un endroit fixe, de différents endroits du véhicule ou de différents véhicules d'un même train pour la commande du véhicule ou de son moteur en vue de réaliser des performances désirées, p. ex. vitesse, couple, variation programmée de la vitesse
• B60L 50/60 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible utilisant de l'énergie fournie par des batteries