Abrégé

The present application relates to the technical field of power control, and in particular relates to a converter system control method and apparatus, and a power system. The converter system comprises a power grid access end, and multiple energy storage converter devices connected to the power grid access end and configured in parallel, each of the energy storage converter devices comprising a battery cluster. The converter system control method comprises: controlling the battery cluster of at least one of the energy storage converter devices to be in a state of alternating operation between charging and discharging; and controlling the remaining energy storage converter devices to be in a standby state. By means of controlling the battery cluster of at least one energy storage converter device to be in the state of alternating operation between charging and discharging, the battery cluster is placed in a charging-discharging cycling state, thereby maintaining battery health of the battery cluster at a relatively high level, keeping the performance of the battery cluster stable, and reducing the likelihood of failures due to power feeding of the battery cluster, and the replacement frequency.

Classes IPC  ?

• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion

Produits et services

(1) Automated fuel cell test stations; batteries and battery chargers for mobile telephones; batteries and battery chargers for notebook computers; charge regulators for electric vehicles; chargers for general purpose batteries; charging stations for electric vehicles; circuit breakers; current rectifiers; DC input power supplies; DC/DC converters; electric batteries for powering electric vehicles; electric converters; electric current switches; electric sockets; electric transformers; electric vehicle chargers; electrical connectors; electrical distribution boxes; electronic controllers for use with power converters; energy meters for tracking and monitoring energy usage; low-voltage power supplies; meteorological instruments; meters for measuring electric current; modules for photovoltaic power generation; photovoltaic cells and modules; photovoltaic installations for generating solar electricity; photovoltaic inverters; rectifier modules; rectifiers; remotely controlled electrical plug and socket; solar batteries; solar panels for the production of electricity; solar-powered battery chargers; ultracapacitors for energy storage; uninterruptible power supplies; variometers; voltage regulators; voltage regulators for electric power

Abrégé

A three-level flying capacitor DCDC converter, a photovoltaic system and a method for controlling the three-level flying capacitor DCDC converter are provided. The three-level flying capacitor DCDC converter includes an inductor, a first switching transistor, a second switching transistor, a first diode, a second diode, a third diode, a flying capacitor and a controller. A first terminal of the inductor is connected to a positive input terminal of the DCDC converter. A second terminal of the first switching transistor is connected to a negative input terminal of the DCDC converter through the second switching transistor. Operation of the DCDC converter is stopped and a direct-current bus voltage is reduced in response to a difference between the direct-current bus voltage and a voltage of the flying capacitor greater than or equal to a withstand voltage of the second diode.

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
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02M 1/36 - Moyens pour mettre en marche ou arrêter les convertisseurs

Abrégé

A method and circuit for controlling a bidirectional resonant direct-current converter are provided. The method includes obtaining an input and/or output electrical parameter of the converter; determining respective delay time periods of bridge arms in the secondary circuit based on the input and/or output electrical parameter and a desired gain of the converter; determining a switching frequency to be greater than a resonant frequency of the resonant tank based on the input and/or output electrical parameter and a preset reference signal; and turning off, in response to a secondary resonant current of the converter reaching zero, corresponding switching transistors of the switching transistors in the secondary circuit immediately after the respective delay time periods starting from a zero-crossing point; and turning on other switching transistors complementary to the turned-off switching transistors in the secondary circuit immediately after a dead time.

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
• H02M 1/00 - Détails d'appareils pour transformation
• H02M 3/00 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu

Produits et services

Electric control devices for energy management; current rectifiers; batteries, electric; electric apparatus for commutation; rotary converters; electrical power distribution blocks; ultracapacitors for energy storage; transformers [electricity]; solar cell modules; power controllers; power distribution boxes; current converters; electric current control devices; auxiliary battery packs; converters, electric; computer programs [downloadable software]; inverters [electricity].

Produits et services

Inverters [electricity]; electric control devices for energy management; current rectifiers; batteries, electric; electric apparatus for commutation; rotary converters; power distribution module; ultracapacitors for energy storage; transformers [electricity]; photovoltaic cells and modules; power controllers; power distribution boxes; electronic currency converters; electric current control devices; auxiliary battery packs; converters, electric; computer program (downloadable software).

Abrégé

A photovoltaic distribution network system and a network configuration method therefor are provided. The photovoltaic distribution network system includes multiple photovoltaic devices, a router and a distribution network control device configured to generate a device list including device information of to-be-configured devices and transmit the device list and network configuration information to the to-be-configured devices. The to-be-configured device is configured to broadcast device information of the to-be-configured devices based on the network configuration information. The router is configured to receive the device information broadcast by the to-be-configured devices and establish a communication connection with a first distribution network device among the to-be-configured devices based on device information of the first distribution network device. The first distribution network device is configured to receive device information broadcast by a to-be-configured device not in a communication connection and establish a direct or indirect communication connection with the to-be-configured device.

Classes IPC  ?

• H04L 41/0806 - Réglages de configuration pour la configuration initiale ou l’approvisionnement, p. ex. prêt à l’emploi [plug-and-play]
• H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
• H04W 76/15 - Établissement de connexions à liens multiples sans fil

Abrégé

An electrical connector includes: a receptacle having a mating socket and a device-side interface, the device-side interface being configured to be electrically connected to an electrical apparatus and secured to the electrical apparatus; and a plug, provided with an electrical plug and a wire interface. The receptacle and the plug can be plugged together by means of the cooperation between the mating socket and the electrical plug; the wire interface is configured to be electrically connected to a wire; the plug is configured to have a pre-plugged state so as to be in insulating connection with the receptacle, and to have an electrically-plugged state so as to be in electrical connection with the receptacle; in the pre-plugged state, the plug is detachably connected to the receptacle. The electrical connector provided by the technical solution of the present application can solve the problems of erroneous plugging and misplug.

Classes IPC  ?

• H01R 13/627 - Fixation du type à action brusque
• H01R 13/635 - Moyens additionnels pour faciliter l'engagement ou la séparation des pièces de couplage, p. ex. moyens pour aligner ou guider, leviers, pression de gaz pour la séparation uniquement par une pression mécanique, p. ex. par la force d'un ressort
• H01R 13/639 - Moyens additionnels pour maintenir ou verrouiller les pièces de couplage entre elles après l'engagement
• H01R 13/645 - Moyens pour empêcher, bloquer ou éviter le couplage incorrect par des éléments interchangeables sur le boîtier ou sur le socle

Abrégé

A power-side shutdown protection method for a power conversion circuit, a power converter, a combiner box, and a power conversion system are provided. The power-side shutdown protection method includes: determining a DC/DC conversion circuit connected to a DC power supply with a reverse current as a target DC/DC conversion circuit, and short circuiting a positive electrode and a negative electrode at a power side of the target DC/DC conversion circuit; controlling a switch connected to the target DC/DC conversion circuit to be turned off; determining whether the switch controlled to be turned off is actually turned off; and stopping short circuiting the positive electrode and the negative electrode at the power side of the target DC/DC conversion circuit in a case that the switch is actually turned off.

Classes IPC  ?

• H02H 7/12 - 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
• H02H 1/00 - Détails de circuits de protection de sécurité

Abrégé

A mounting tray and an energy storage container having same. The mounting tray comprises a tray body (100) and a mounting support (104), wherein the tray body can be slid into and out of an apparatus compartment of an energy storage container; and the mounting support is arranged on the tray body and is configured to support, mount and fix a power apparatus (200) to be mounted in the apparatus compartment. By using the mounting tray, the power apparatus can be pre-mounted onto the mounting support on the tray body, and the tray body is then slid into the apparatus compartment of the energy storage container. Since pre-mounting the power apparatus on the tray body allows mounting and maintenance operations to be performed in a wider space, the convenience of mounting is greatly improved.

Classes IPC  ?

• B65D 19/44 - Éléments ou dispositifs pour placer les objets sur les plates-formes
• H01M 50/20 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports

Produits et services

connectors [electricity]; current convertors; Circuit breakers; Inverters [electricity]; Electrical converters; Power controller; Switches, electric; downloadable computer software programs; Data processing apparatus; connecting modules for electric controls; Electric apparatus for commutation; Electric installations for the remote control of industrial operations; Batteries, electric; solar batteries; Measuring devices, electric; Gauges. Scientific research in the field of electricity; Design of solar photovoltaic systems; technical consultancy in the field of scientific and industrial research; research in the field of artificial intelligence technology; artificial intelligence consultancy; Development, update, and maintenance of software and database systems; software as a service [SaaS]; platform as a service [PaaS]; design and development of software in the field of mobile applications; custom design and development of computer software.

Produits et services

Electric apparatus for commutation; solar batteries; distribution boxes [electricity]; current rectifiers; transformers [electricity]; electro-dynamic apparatus for the remote control of signals; accumulators, electric; inverters [electricity]; sensor controllers; temperature controllers; electrical controllers; electrical converters; computer software for battery management systems; batteries, electric; battery boxes; battery chargers; alarms; materials for electricity mains [wires, cables]; fire-extinguishing apparatus; chargers for electric accumulators. Industrial design; software as a service; platform as a service; development of energy and power systems; engineering services in the field of electricity and electrical power.

Abrégé

A power supply control protection system includes: a switching power supply, a main controller, an auxiliary controller, a sampling circuit and an energy storage element, the switching power supply is used for supplying power to the sampling circuit, the main controller and the auxiliary controller; the energy storage element is used for providing an auxiliary power supply for the sampling circuit, the main controller and the auxiliary controller; the sampling circuit has a self-checking function and sends a self-checking result to at least one of the main controller and the auxiliary controller; when the self-checking result indicates that the sampling circuit is normal, the main controller or the auxiliary controller controls a converter to work; and the main controller and the auxiliary controller communicate with each other. When a switching power supply cannot normally supply power, an energy storage element supplies power to a circuit.

Classes IPC  ?

• H02M 1/00 - Détails d'appareils pour transformation
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• 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

Abrégé

An isolated AC-DC converter, a charging device, and a power supply system are provided. The isolated AC-DC converter comprises: a PFC filter, wherein an input end of the PFC filter is connected to an alternating current; a PFC circuit, wherein an input end of the PFC circuit is connected to an output end of the PFC filter, and an output end of the PFC circuit is connected to an input end of a DC-DC circuit; and the DC-DC circuit, comprising a transformer, wherein the transformer comprises: a primary winding, a secondary winding, and a first shielding layer; the first shielding layer is arranged between the primary winding and the secondary winding; the first shielding layer is connected to the PFC filter for preventing an interference signal from being transmitted to the secondary winding.

Classes IPC  ?

• H02M 1/44 - Circuits ou dispositions pour corriger les interférences électromagnétiques dans les convertisseurs ou les onduleurs
• 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
• H02M 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs
• 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 7/219 - 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

Abrégé

A cabinet assembly and a photovoltaic power station are provided. The cabinet assembly includes at least one cabinet, a conductive member and a protective hood assembly. The conductive member can be electrically connected to a cabinet output member of the cabinet, and the conductive member is arranged in the protective hood assembly. The protective hood assembly is provided with a first heat dissipation air duct, the cabinet is provided with a second heat dissipation air duct, and the first heat dissipation air duct is in communication with the second heat dissipation air duct of the at least one cabinet to dissipate heat from the conductive member. In this cabinet assembly, a heat dissipation airflow within the second heat dissipation air duct of the cabinet can be utilized to flow through the conductive member within the first heat dissipation air duct for heat dissipation.

Classes IPC  ?

• H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques Détails
• H05K 5/03 - Couvercles ou capots
• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage

Abrégé

The present application discloses a combiner device, a photovoltaic system and a fault detection method. The combiner device comprises at least two photovoltaic strings connected in parallel; and further comprises a current measurement circuit, a voltage measurement circuit, an insulation resistance measurement circuit and a controller. The current measurement circuit is used for measuring the current of each photovoltaic string; the voltage measurement circuit is used for measuring the voltage of the photovoltaic strings connected in parallel; the insulation resistance measurement circuit is used for measuring the insulation resistance of the photovoltaic strings connected in parallel; and the controller determines, according to the current, the voltage and the insulation resistance, whether the photovoltaic strings have a reverse connection fault.

Classes IPC  ?

• H02S 50/10 - Tests de dispositifs PV, p. ex. de modules PV ou de cellules PV individuelles
• G01R 31/55 - Test de lignes pour déceler des connexions incorrectes

Abrégé

A photovoltaic bracket and a photovoltaic system, belonging to the technical field of photovoltaic mounting. The photovoltaic bracket comprises a bracket body and a connecting assembly; the bracket body is used for bearing a photovoltaic module to be mounted; the bracket body is provided with a limiting member, the limiting member being configured to prevent the photovoltaic module from being detached from the bracket body; the connecting assembly comprises a hook and a limiting assembly, the hook being connected to the bracket body; the hook can be hooked onto a bearing body, and the limiting assembly is arranged on the hook and can apply force to two sides of the bearing body to clamp the bearing body. The photovoltaic bracket can be directly hooked onto a bearing body such as a wall body or a railing without the need for drilling holes in the bearing body, and fewer parts are required, thus facilitating mounting.

Classes IPC  ?

• H02S 20/22 - Structures de support directement fixées sur un objet inamovible spécialement adaptées pour les bâtiments

Abrégé

The present application provides a converter and a chopper transistor blocking control method therefor. According to the chopper transistor blocking control method, when switching transistors in a converter need to be blocked, switching transistors in a primary side circuit connected to a transformer of the converter are blocked, and switching transistors in a secondary side circuit are blocked when the current on a branch where a secondary side winding in the transformer is located is zero, or batch blocking of the switching transistors in the secondary side circuit is completed after the current on the branch where the secondary side winding is located recirculates to zero, thereby avoiding overvoltage damage to the switching transistors caused by the current on the branch where the secondary side winding is located recirculating by means of the junction capacitance of the switching transistors in the secondary side circuit.

Classes IPC  ?

• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02M 1/00 - Détails d'appareils pour transformation
• H02M 7/217 - 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

Abrégé

A planar device and a switching circuit are provided. The planar device includes at least one chip and a base; where the chip includes a substrate; the substrate is arranged on a side of the chip close to the base, and the substrate is electrically connected to the base; a side of the chip away from the base is provided with at least one source and at least one gate; the at least one source and the at least one gate are electrically connected to the chip; and the base is connected to a target potential point, and the target potential point is for maintaining a potential of the base in a low-frequency changing state or a constant state.

Classes IPC  ?

• H01L 23/552 - Protection contre les radiations, p. ex. la lumière
• H01L 23/14 - Supports, p. ex. substrats isolants non amovibles caractérisés par le matériau ou par ses propriétés électriques
• H01L 23/373 - Refroidissement facilité par l'emploi de matériaux particuliers pour le dispositif
• H01L 25/07 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans une seule des sous-classes , , , , ou , p. ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans la sous-classe
• H03K 17/16 - Modifications pour éliminer les tensions ou courants parasites

Abrégé

The present application discloses a buck-boost converter and a power supply system. The converter comprises a controller, a controllable switching transistor, a freewheeling diode and a boost circuit. A first terminal and a second terminal of the controllable switching transistor are respectively connected to the positive input terminal of the buck-boost converter and the positive input terminal of the boost circuit. The anode and the cathode of the freewheeling diode are respectively connected to the negative input terminal of the buck-boost converter and the second terminal of the controllable switching transistor. The controller is used for controlling the buck-boost converter to work in a buck mode when the input voltage of the buck-boost converter is greater than a preset voltage, and controlling the buck-boost converter to work in a boost mode when the input voltage of the buck-boost converter is smaller than the preset voltage.

Classes IPC  ?

• H02M 3/157 - 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 avec commande numérique
• 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

Abrégé

The present application discloses an inductor, a power converter, and a power conversion system. The inductor comprises an inductor body and a flange structure; the flange structure comprises a flange frame and a non-metal connecting piece; the flange frame is configured to be connected to a first cavity; the non-metal connecting piece is fixed on the flange frame; and the inductor body is fixed at the end of the non-metal connecting piece facing away from the flange frame. According to the present application, the non-metal connecting piece is fixed on the flange frame, so that the flange structure has enough strength to fix the inductor body, and a metal heat dissipation housing and a potting adhesive do not need to be provided, thereby reducing the cost of inductor, and reducing the weight of the inductor.

Classes IPC  ?

• H01F 27/30 - Fixation ou serrage de bobines, d'enroulements ou de parties de ceux-ci entre euxFixation ou montage des bobines ou enroulements sur le noyau, dans l'enveloppe ou sur un autre support
• H01F 27/32 - Isolation des bobines, des enroulements, ou de leurs éléments
• H01F 27/08 - RefroidissementVentilation

Abrégé

The present application relates to a fault detection method and apparatus for an energy storage system, and a computer device and a storage medium. The method comprises: sampling a direct current of an energy storage system (S302); performing a fast Fourier transform on the direct current, so as to obtain a frequency spectrum corresponding to the direct current (S304); and when the frequency spectrum corresponding to the direct current is different from a reference standard frequency spectrum in a target frequency band, determining a fault condition of the energy storage system on the basis of a current change rate within the target frequency band (S306), wherein the reference standard frequency spectrum is a frequency spectrum corresponding to the direct current under the normal operation of the energy storage system. By means of the method, the false alarm rate of fault detection can be reduced.

Classes IPC  ?

• G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
• G01R 19/12 - Mesure d'un taux de variation

Abrégé

A ventilation structure, an energy storage cabinet and an energy storage system. The ventilation structure comprises a mounting body and flow guide members, wherein the mounting body is configured to be assembled and connected to a ventilation opening of the energy storage cabinet; all flow guide assemblies are connected to the mounting body, and each group of flow guide assemblies comprise a plurality of flow guide members, which are arranged in a first direction intersecting with a ventilation direction of the energy storage cabinet, and on one side of the ventilation direction, each flow guide member is provided with a recessed cavity having an opening. The ventilation structure is additionally arranged at the ventilation opening, and when noise is transmitted outwards by means of the ventilation opening, the noise can be collided between the flow guide members so as to be eliminated, thereby achieving the effect of reducing noise. When the ventilation opening serves as an air inlet, the opening of the recessed cavity of each flow guide member is made to face the interior of the energy storage cabinet, such that an airflow, which is blown in from outside to inside, is normally guided and is smoothly blown into the energy storage cabinet, and noise transmitted from the inside to the outside can be absorbed by the recessed cavity of each flow guide member, thereby eliminating the noise. In this way, the flow guide members can not only perform flow guiding, but can also perform noise reduction, and thus can prevent noise from transmitting outwards while achieving ventilation and heat dissipation.

Classes IPC  ?

• H01M 10/6563 - Gaz avec circulation forcée, p. ex. par des soufflantes
• H01M 10/613 - Refroidissement ou maintien du froid
• H01M 10/6566 - Moyens dans l'écoulement du gaz pour guider l'écoulement autour d'un ou plusieurs éléments, p. ex. collecteurs, chicanes ou autres barrières

Abrégé

The present application relates to the technical field of energy storage, and in particular to an energy storage device. The energy storage device includes a cabinet and multiple dehumidifier sets. The multiple dehumidifier sets are arranged in a vertical direction inside the cabinet and are spaced apart. Each of the multiple dehumidifier sets includes multiple dehumidifiers that are arranged in a horizontal direction and are spaced apart, and a projection of each dehumidifier of one of two adjacent dehumidifier sets on a horizontal plane does not overlap a projection of each dehumidifier of the other one of the two adjacent dehumidifier sets on the horizontal plane.

Classes IPC  ?

• H01M 50/24 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports caractérisés par les propriétés physiques des boîtiers ou des bâtis, p. ex. dimensions adaptés pour protéger les batteries de leur environnement, p. ex. de la corrosion
• H01M 50/204 - Bâtis, modules ou blocs de multiples batteries ou de multiples cellules
• H01M 50/691 - Dispositions ou procédés pour le drainage des liquides des boîtiersNettoyage des boîtiers de la batterie ou de la cellule

Abrégé

A photovoltaic system and a communication method therefor are provided. The communication method includes: sending, by each slave, a report signal to a master; monitoring for receipt of a response signal from the master; and if at least one slave receives the response signal, the corresponding slave executes a corresponding action based on the response signal. Therefore, communication between the master and each slave is achieved in a mode that each slave actively sends the report signal to the master, and the master is prevented from adopting a roll call query mode in which the master actively sends a request signal to the slaves, such that occupation of bus resources by the master is reduced.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02S 50/00 - Surveillance ou tests de systèmes PV, p. ex. équilibrage de charge ou identification des défauts

Abrégé

Provided are a power converter, a method for controlling a power converter, and a power system. The power converter includes a boost circuit, an inverter circuit, a bridge circuit, a switching circuit, and a controller. The boost circuit is connected to a direct current power supply and the inverter circuit and the bridge circuit. The switching circuit is connected to the bridge circuit and ground. The switching circuit at least includes a plurality of controllable switches. The controller is configured to control, subsequent to the direct current power supply entering an off state, the plurality of controllable switches to be switched on or switched off to form a discharge loop by the boost circuit, the bridge circuit, and the switching circuit, for discharging a common mode voltage to ground at the input terminal of the boost circuit to be within a safe voltage.

Classes IPC  ?

• H02M 1/34 - Circuits d'amortissement
• H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
• H02M 3/06 - 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 résistances ou des capacités, p. ex. diviseur de tension
• H02M 7/487 - Onduleurs bloqués au point neutre
• 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

Abrégé

A converter and an ANPC circuit driving method therefor. The ANPC circuit driving method includes: first, with the goal of enabling an ANPC circuit in a converter to respectively use inner transistors and outer transistors to bear switching loss in two half switching periods of a switching period, determining an output state switching sequence of the ANPC circuit; and then, generating and outputting switching transistor control signals of the ANPC circuit according to the output state switching sequence. Thus, the ANPC circuit can realize the balance of switching loss of the inner and outer transistors; moreover, the balance granularity of the switching loss is a half switching period, so that the balance effect is fine, and the loss fluctuation is low.

Classes IPC  ?

• H02M 7/487 - Onduleurs bloqués au point neutre
• H02M 1/00 - Détails d'appareils pour transformation

Abrégé

An isolated matrix converter and a control method therefor are provided. The converter includes a bidirectional switching module, a transformer, a resonant inductor, a resonant capacitor, and a bridge arm capacitor. The bidirectional switching module is connected in series with the bridge arm capacitor to form a bridge arm of the converter, and each bridge arm of the converter includes at least one bidirectional switching module. A primary winding of the transformer is connected in series with the resonant inductor and the resonant capacitor to form a branch, and the branch is connected between two terminals of the bridge arm of the converter. The bidirectional switching module includes a clamping capacitor and a bidirectional switching unit. The clamping capacitor is configured to suppress a voltage spike generated in a switching process of at least two controllable switching transistors in the bidirectional switching module.

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
• H02M 1/00 - Détails d'appareils pour transformation
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique

Abrégé

A photovoltaic inverter, a photovoltaic power generation system and a method for controlling the photovoltaic power generation system are provided. In the method, during an anti-PID operation, only an anti-PID power supply is controlled to operate, and a voltage of a DC bus is boosted by using the anti-PID power supply, so as to suppress the PID effect. During insulation detection, both the anti-PID power supply and a target detection resistor are controlled to operate, voltages to the ground of a position of the photovoltaic inverter to which the target detection resistor is connected under different conditions are obtained by controlling the anti-PID power supply, so as to perform insulation detection by using the anti-PID power supply. Then, an insulation impedance to the ground of the photovoltaic inverter can be calculated.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02S 40/32 - Composants électriques comprenant un onduleur CC/CA associé au module PV lui-même, p. ex. module CA

Abrégé

Disclosed in the present application are a hybrid energy storage system and a control method. The system comprises a first-type energy storage device and at least one second-type energy storage device, wherein the first-type energy storage device comprises a first energy storage medium and a first energy storage converter; the second-type energy storage device comprises a second energy storage medium and a second energy storage converter; the charging and discharging speed of the first energy storage medium is greater than the charging and discharging speed of the second energy storage medium; the first energy storage medium is connected to a direct-current side of the first energy storage converter, and the direct-current side of the first energy storage converter is connected to a direct-current bus; the second energy storage medium is connected to a direct-current side of the second energy storage converter, and the direct-current side of the second energy storage converter is connected to the direct-current bus; and an alternating-current side of the first energy storage converter and an alternating-current side of the second energy storage converter are both connected to a point of common coupling. In the case of a power grid anomaly, a plurality of energy storage converters operate in parallel to supplement a power grid with the electric energy of a first energy storage medium; and the rated currents of the energy storage converters are set to be relatively low, thereby reducing the stress on the energy storage converters, and thus reducing the costs.

Classes IPC  ?

• H02J 3/28 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie
• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion
• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux

Abrégé

An energy storage cabinet includes a cabinet body and a partition assembly, an upper installation space and a lower installation space are arranged in the cabinet body; slide rails are respectively arranged on two opposite inner walls of the cabinet body; the slide rails are arranged between the upper installation space and the lower installation space; and grooves are arranged on upper side surfaces of the sliding rails. The partition assembly is used for separating the upper installation space and the lower installation space, and is provided with a roller which can be snapped into the groove and can roll along the slide rail to move the partition assembly out of the cabinet. When the electrical element breaks down and needs to be taken out, the partition assembly can be pulled out, so that the roller can move out of the groove and roll on the slide rail.

Classes IPC  ?

• 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

Provided is a power cabinet including a first module provided with a first assembly portion and a second module provided with a second assembly portion. The first module has a first positioning groove formed on a bottom surface of the first module. The second module has a second positioning protrusion provided on a top surface thereof and a second positioning groove formed on a bottom surface thereof; or the first module has a first positioning groove formed on the bottom surface thereof, and the second module has a second positioning groove formed on the top surface thereof and a second positioning protrusion provided on the bottom surface thereof; or the first module is provided with a first positioning protrusion on a top surface thereof, and the second module has a second positioning protrusion provided on the top surface thereof and a second positioning groove formed on the bottom surface thereof.

Classes IPC  ?

• H02B 1/32 - Montage de dispositifs à l'intérieur de ces enveloppes

Abrégé

An inverter, a method for turning off an inverter, and a photovoltaic system are provided. Pulse blocking is performed on an inverter circuit in response to a short circuit of a negative electrode of the DC source to ground. The switching module is turned off if a first current of the switching module at a current time instant is less than or equal to a first preset current, and a current change trend is a descending trend. Alternatively, the switching module is turned off within a preset duration starting from a time instant when an acquired current of the switching module is less than or equal to a preset value if the current change trend is a descending trend.

Classes IPC  ?

• H02J 3/48 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs contrôlant la répartition de la composante en phase
• 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 inverter, a method for turning off an inverter, and a photovoltaic system are provided. Pulse blocking is performed on the inverter circuit in response to a short circuit of a negative electrode of a DC source to ground. Upon determining that a current of a first switching module is in a descending trend after the inverter circuit is subjected to the pulse blocking, the first switching module and a second switching module with a current of zero are turned off simultaneously in response to a first electrical parameter of the first switching module reaching a preset electrical parameter; or the first switching module and a second switching module with a current of zero are turned off simultaneously within a first duration starting from a time instant when an actual electrical parameter of the first switching module reaches the preset electrical parameter.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 3/48 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs contrôlant la répartition de la composante en phase

Abrégé

The present application relates to the technical field of inverters, and provides an inverter and an inverter turn-off method. The inverter comprises an inverter circuit, a switching module and a controller. The method of the present application comprises: in response to a ground short-circuit fault, performing pulse blocking on the inverter circuit; upon completing the pulse blocking of the inverter circuit, in response to the first current parameter of the switching module at the current moment being less than or equal to a safe current value of the switching module, determining the change trend of the first current parameter of the switching module corresponding to the current moment, wherein the safe current value is greater than zero; and when the change trend of the first current parameter is a decreasing trend, controlling the switching module to be turned off. In this way, the relay can be prevented from being impacted by high current, achieving stable turn-off of the short-circuit loop, improving the safety of system operation and prolonging the service life of the relay.

Classes IPC  ?

• 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 3/087 - 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 une surcharge pour des systèmes à courant continu
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

A circuit for protecting a micro inverter and a circuit system having micro inverter topology. The circuit includes a current sampling module, a hardware adjusting module, and a shutdown module that are sequentially connected. The current sampling module is configured to collect a first current signal in a bridge arm, in which a switch transistor is located, in secondary-side bridge arm circuitry including switch transistors. The hardware adjusting module is configured to receive the first current signal and a reference current signal and output an overcurrent indicating signal for the first current signal. The shutdown module is configured to receive the overcurrent indicating signal and a grid-polarity signal and output a shutdown control signal for the switch transistors, to enable secondary-side driving circuitry to shut down the switch transistors in the secondary-side bridge arm circuitry.

Classes IPC  ?

• 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
• 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
• 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

Abrégé

The present application relates to the technical field of electrical wiring. Disclosed are a connector for wiring, and an energy storage system. The connector comprises a plug, a socket and a first locking assembly, wherein the plug is in plug-in mating with the socket, and plug-in mating positions of the plug and the socket include a pre-plugging position and an electrical-connection plugging position; and the first locking assembly has locking and unlocking functions and is at least configured to lock the plug-in mating position of the plug and the socket at the pre-plugging position. The connector for wiring eliminates the need to disassemble a wire assembly for transportation, thereby reducing transportation costs; and after transportation to a site, it is only necessary to continue to adjust the first locking assembly on the basis of pre-mounting and to adjust the plug-in mating position of the plug and the socket, such that the operation is very simple and convenient, thereby greatly reducing the risk of misoperations such as on-site incorrect plugging and plugging by mistake.

Classes IPC  ?

• H01R 13/639 - Moyens additionnels pour maintenir ou verrouiller les pièces de couplage entre elles après l'engagement
• 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
• H01R 13/46 - SoclesBoîtiers
• H02J 15/00 - Systèmes d'accumulation d'énergie électrique
• H01M 50/50 - Connexions conductrices de courant pour les cellules ou les batteries

Abrégé

A grid-connected system and a grid-connected method. The grid-connected system comprises a controller (100), a main switch (K), transformers (T1, T2, ..., Tn), and converters (10, 20, ..., N0). An output end of each converter is connected to the low-voltage side of the corresponding transformer, and the high-voltage side of the transformer is configured to be connected to a power grid by means of the main switch. The controller is configured to, when the voltage phase sequence of the high-voltage side of the transformer is inconsistent with the grid-side phase sequence of the power grid, take the grid-side phase sequence as a reference to send a phase sequence adjustment command to a converter started in an off-grid mode. The converter started in an off-grid mode is configured to, on the basis of the phase sequence adjustment command, adjust the phase sequence of the output voltage to be consistent with the grid-side phase sequence, thereby enabling grid connection in a correct phase sequence, and realizing consistency between the phase sequence of the output voltage of the converter and the grid-side phase sequence.

Classes IPC  ?

• H02J 3/44 - Synchronisation d'un générateur pour sa connexion à un réseau ou à un autre générateur avec moyens pour assurer une séquence de phase correcte
• 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 discloses a grid-connected system and a synchronization method. The grid-connected system comprises a controller, a master switch, a transformer and a converter; an output end of the converter is connected to a low-voltage side of the transformer, and a high-voltage side of the transformer is configured to be connected to a power grid by means of the master switch; before the converter is connected to the grid, the master switch is turned off; the controller is used for controlling the converter to undergo off-grid starting, and on the basis of a phase comparison result between a voltage phase of the power grid and a voltage phase of the high-voltage side of the transformer, performing closed-loop control on a voltage frequency of the converter having undergone off-grid starting, so that the voltage phase of the high-voltage side of the transformer is consistent with the voltage phase of the power grid. A phase changed rapidly is converted into a frequency changed slowly, and the controller controls the frequency of an output voltage of the converter to gradually approach the frequency of the power grid, thereby realizing phase control and rapid synchronization between the phases on both sides of the master switch.

Classes IPC  ?

• H02J 3/44 - Synchronisation d'un générateur pour sa connexion à un réseau ou à un autre générateur avec moyens pour assurer une séquence de phase correcte

Abrégé

A case includes a case body, a case cover and a connecting mechanism, the case body is provided with a cavity and an opening in communication with the cavity; the case cover covers the opening; and the connecting mechanism is connected between the case body and the case cover, at least one connecting mechanism comprises a reinforcing member, the reinforcing member is connected to the case body, and the material and/or thickness and/or contact area of the reinforcing member of the at least one connecting mechanism is different from that of reinforcing members of the other connecting mechanisms. The technical scheme of the utility model can prevent the case cover from flying out to cause a potential safety hazard, when a machine in the case explodes.

Classes IPC  ?

• H05K 5/13 - Enveloppes, coffrets ou tiroirs pour appareils électriques comprenant plusieurs parties formant une enveloppe fermée assemblées par vis
• H05K 5/03 - Couvercles ou capots

Abrégé

The present application relates to a power conversion apparatus and a control method therefor, and a power conversion system. The power conversion apparatus comprises a fire extinguishing module, a control module, a plurality of power devices and a plurality of temperature collection modules, wherein each power device is correspondingly provided with a temperature collection module used for collecting the temperature of the corresponding power device; and the control module is connected to each temperature collection module and the fire extinguishing module, and the control module is configured to: when the temperature of at least one power device reaches a first preset threshold value of the corresponding power device, trigger the fire extinguishing module to extinguish a fire inside the power conversion apparatus. That is, the fire extinguishing module is triggered to extinguish an open flame that is about to occur or has already occurred inside the power conversion apparatus, thereby protecting the power conversion apparatus, and avoiding the open flame spreading and causing a fire.

Classes IPC  ?

• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02M 1/00 - Détails d'appareils pour transformation
• H02H 7/12 - 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
• H02H 5/04 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions non électriques normales de travail avec ou sans reconnexion sensibles à une température anormale
• A62C 3/16 - Prévention, limitation ou extinction des incendies spécialement adaptées pour des objets ou des endroits particuliers dans les installations électriques, p. ex. chemins de câbles

Produits et services

Computer programs, downloadable; computer software, recorded; data processing apparatus; calculating machines; electro-dynamic apparatus for the remote control of signals; electric apparatus for commutation. Providing scientific information, advice and consultancy relating to carbon offsetting; consultancy in the field of energy-saving; it consulting services relating to installation, maintenance and repair of computer software; information technology consulting relating to computer software design; software as a service [SaaS]; monitoring of computer system operation by remote access; installation of computer software; creating and maintaining websites for others; updating of computer software; computer software design; computer programming.

Abrégé

A cabinet, an energy storage converter, an energy storage system, and a photovoltaic power generation system are provided. The cabinet includes a cabinet body, a liquid-cooling heat exchanger, a cooling fin, and a heat dissipation fan. An end chamber, a direct ventilation cavity, and an electronic cavity are formed in the cabinet body. The electronic cavity is a closed cavity. Part of a direct ventilation duct is formed in the direct ventilation cavity. Two ends of the direct ventilation duct are in communication with an outside world. The liquid-cooling heat exchanger is disposed in the electronic cavity. The cooling fin is disposed in the end chamber. The liquid-cooling heat exchanger is connected to the cooling fin. The heat dissipation fan is configured to guide an external airflow to flow into the end chamber and flow out of the cabinet body after flowing through the cooling fin.

Classes IPC  ?

• H02S 40/42 - Moyens de refroidissement
• 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

A cabinet, an energy storage converter, an energy storage system, and a photovoltaic power generation system are provided. The cabinet includes a cabinet body and a heat exchanger. The cabinet body includes a direct ventilation cavity and an electronic cavity. The direct ventilation cavity is independent from the electronic cavity. The direct ventilation cavity forms at least part of a direct ventilation duct, and two ends of the direct ventilation duct are in communication with outside of the cabinet body. The heat exchanger is provided in the cabinet body and has a first heat exchange channel and a second heat exchange channel. The first heat exchange channel exchanges heat with the outside of the cabinet body, and the electronic cavity is in communication with the second heat exchange channel to exchange heat with the first heat exchange channel.

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
• H02S 10/20 - Systèmes caractérisés par leurs moyens de stockage de l’énergie
• H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques Détails

Abrégé

Disclosed in the present application is a method for determining the switching frequency of an inverter. The method comprises: acquiring input state information of a transformer and output state information of the transformer (01); and on the basis of the input state information and the output state information, determining the switching frequency of a switching transistor, so as to control a target current that is output by the transformer to a power grid (02).

Classes IPC  ?

• H02M 5/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p. ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases sans transformation intermédiaire en courant continu par convertisseurs statiques utilisant des transformateurs pour la transformation de l'amplitude de la tension ou du courant seulement
• H02M 5/293 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p. ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases sans transformation intermédiaire en courant continu 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 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
• 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
• 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

Disclosed in the present application is a control method, the method comprising: (01) acquiring target operation state information of an output end circuit of a transformer, and determining the operation state of a power grid on the basis of the target operation state information; and (02) when it is determined that the power grid is in the preset operation state, controlling switch transistors in the output end circuit and an input end circuit of the transformer, so as to reduce the target current.

Classes IPC  ?

• H02M 7/537 - 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
• 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
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02H 9/02 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de courant

Abrégé

Disclosed in the present application is a power conversion apparatus, comprising a first cavity, a second cavity and a heat dissipator, wherein a power device is provided in the first cavity; the heat dissipator comprises an evaporator and a condenser, which forms a circulating flow path with the evaporator, the evaporator being configured to absorb heat of the power device; the condenser is located in the second cavity, and the second cavity can allow air to flow through the condenser to cool the condenser; and a magnetic device is provided outside the second cavity. In the power conversion apparatus, the heat dissipator is used to perform heat dissipation on the power device, such that the heat dissipation capacity is effectively improved, and a heat dissipation requirement of the power conversion apparatus can be met; the magnetic device is externally arranged relative to the condenser, such that the second cavity has a relatively small size, thereby facilitating the mounting, disassembly and maintenance of the second cavity; a heat dissipation effect for the magnetic device can be improved; mutual interference between heat dissipation of the magnetic device and heat dissipation of the condenser can also be avoided; and the flexibility of structural layout of the power conversion apparatus can also be improved.

Classes IPC  ?

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

Disclosed in the present application is a power conversion apparatus, comprising a first cavity, a second cavity and a heat dissipator, wherein a power device is provided in the first cavity; the heat dissipator comprises an evaporator and a condenser, which forms a circulating flow path with the evaporator, the evaporator being configured to absorb heat of the power device; the condenser is located in the second cavity, and the second cavity can allow air to flow through the condenser to cool the condenser; and the evaporator is located outside the second cavity. In the power conversion apparatus, the heat dissipator is used to perform heat dissipation on the power device, such that the heat dissipation capacity is improved; the evaporator is externally arranged relative to the condenser, such that the second cavity has a relatively small size, thereby facilitating the mounting, disassembly and maintenance of the second cavity; and the evaporator and the condenser are not in the same cavity, such that hot air in the second cavity is prevented from affecting the evaporator, and the temperature of the evaporator is relatively lower, thereby making a heat dissipation effect of the evaporator better, and thus improving a heat dissipation effect of the power conversion apparatus.

Classes IPC  ?

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

Abrégé

An inverter, a control method of the inverter, and a power system are provided. The inverter includes a DC bus, an inversion circuit, a controller, and multiple boost circuits. An input terminal of each boost circuit is configured to connect to a corresponding photovoltaic unit, output terminals of the boost circuits are connected in parallel and connected to the DC bus, and the inversion circuit is configured to convert DC power outputted by the DC bus into AC power. The controller is configured to: determine, during an operation stage of the inverter, a to-be-adjusted boost circuit from the boost circuits, in response to determining that there is a loss boost circuit in a preset loss condition among the boost circuits; and adjust the to-be-adjusted boost circuit while ensuring that a change threshold for a total power output of the boost circuits is less than a preset adjustment threshold.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02M 1/00 - Détails d'appareils pour transformation

Produits et services

Inverters [electricity]; electric control devices for energy management; Current rectifiers; Batteries, electric; Electric apparatus for commutation; rotary converters; Electrical power distribution blocks; ultracapacitors for energy storage; transformers [electricity]; photovoltaic apparatus and installations for generating solar electricity; power controllers; distribution boxes [electricity]; Current converters; electric current control devices; auxiliary battery packs; converters, electric; Computer programs [downloadable software].

Abrégé

The present disclosure discloses a control method. The method includes: acquiring target operation state information of an output circuit of a transformer to determine an operation state of a power grid based on the target operation state information; and controlling a switching transistor in the output circuit and an input circuit of the transformer to reduce the target current in response to determining that the power grid is in a predetermined operation state.

Classes IPC  ?

• H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

A box and a battery cell module with same. The box is configured to store a battery cell, and the box comprises: a housing (10), wherein the housing (10) is provided with an accommodating cavity (11), a maintenance hole (12) is provided in the top of the housing (10), the maintenance hole (12) is in communication with the accommodating cavity (11), the accommodating cavity (11) is configured to store the battery cell, and the maintenance hole (12) is configured to correspond to the battery cell; and an upper cover (20) which is detachably arranged on the housing (10), wherein the upper cover (20) can cover the maintenance hole (12). Therefore, the problem of it being impossible to maintain a liquid cooling PACK and a battery cell module due to potting and adhesive bonding between a box lid and a box body is solved.

Classes IPC  ?

• H01M 50/244 - Boîtiers secondairesBâtisDispositifs de suspensionDispositifs de manutentionSupports caractérisés par leur procédé de montage
• H01M 50/271 - Couvercles des boîtiers secondaires, des bâtis ou des blocs
• H01M 50/262 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports avec des moyens de fixation, p. ex. des serrures
• H01M 10/613 - Refroidissement ou maintien du froid

Abrégé

A method for detecting arcing, an inverter and a photovoltaic system are provided. The inverter includes an inverter circuit and at least one DC/DC conversion circuit. The method includes: stopping outputting a control signal to a first DC/DC conversion circuit that is currently being suspected of having an electric arc, and operating other DC/DC conversion circuits connected to the inverter circuit normally; decreasing a voltage at a power supply side of the first DC/DC conversion circuit immediately after a first preset period of time elapsed; and determining that no arc fault occurs, and restoring the voltage at the power supply side of the first DC/DC conversion circuit to a first voltage that the first DC/DC conversion circuit receives before the stopping outputting the control signal, if a current at the power supply side is greater than or equal to a first preset current during the decreasing the voltage.

Classes IPC  ?

• H02H 1/00 - Détails de circuits de protection de sécurité
• H02H 3/04 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion Détails avec signalisation ou supervision additionnée à la déconnexion, p. ex. pour indiquer que l'appareil de protection a fonctionné
• 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
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique

Abrégé

A grounding structure and electrical equipment are provided. The electrical equipment includes a case having a grounding requirement and a functional device at least partially disposed outside the case; the grounding structure includes at least one grounding connecting portion, and the grounding connecting portion is disposed on the housing wall of the part, located outside the case, of the functional device; and the housing wall of the functional device is conductively connected to the case.

Classes IPC  ?

• H02B 1/16 - Dispositions pour la mise à la terre
• H01R 4/66 - Connexions à la masse terrestre, p. ex. plaque de terre, piquet de terre
• H02S 40/30 - Composants électriques

Abrégé

A protection circuit for an energy storage system, comprising an energy storage side module (210), a power conversion side module (220), and a protection module (230). The energy storage side module (210) is connected to the power conversion side module (220) through the protection module (230). The energy storage side module (210) is used for outputting a direct current. The power conversion side module (220) is used for providing a direct current for a standby power system in the energy storage side module (210). The protection module (230) is used for disconnecting a power supply circuit between the energy storage side module (210) and the power conversion side module (220) in the event of a short circuit.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H02H 3/08 - 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 une surcharge
• 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

Abrégé

An energy storage battery enclosure and an energy storage system. The energy storage battery enclosure comprises a battery compartment, an electrical compartment and a temperature control system compartment which are mutually independent of each other. The battery compartment comprises cavity structures used for defining accommodating cavities. The cavity structures each comprise: a cavity component, comprising an inner cavity and an outer cavity spaced apart from the inner cavity, the outer cavity being located on the side of the inner cavity facing away from the accommodating cavity; a support component, comprising two support beams which are respectively connected to upper and lower sides of the cavity component; and a fireproof thermal insulation component, located between the inner cavity and the outer cavity, the upper end of the fireproof thermal insulation component extending into one of the two support beams, and the lower end of the fireproof thermal insulation component extending into the other one of the two support beams, so as to hamper heat transfer between the inside of the battery compartment and the outside of the battery compartment. The technical solution of the present utility model solves the problem of bad fire resistance of energy storage battery enclosures in the prior art.

Classes IPC  ?

• H01M 10/658 - Moyens de commande de la température associés de façon structurelle avec les éléments par isolation ou protection thermique
• A62C 2/06 - Barrières coupe-feu

Abrégé

A low-voltage device, a substation, and a new energy power station, relating to the technical field of energy storage and power generation. The low-voltage device comprises: a housing, a first accommodating cavity, a second accommodating cavity, and a third accommodating cavity being defined in the housing; and a communication electronic device, a power distribution electronic device, and a low-voltage bus electronic device which are electrically connected to each other. The communication electronic device is mounted in the first accommodating cavity; the power distribution electronic device is mounted in the second accommodating cavity; and the low-voltage bus electronic device is mounted in the third accommodating cavity.

Classes IPC  ?

• H02B 1/30 - Enveloppes du type armoireParties constitutives ou accessoires

Abrégé

The present disclosure provides a control method. The method comprises: (01) acquiring first phase shift angle information determined previously and second phase shift angle information determined currently, so as to, on the basis of the first phase shift angle information and the second phase shift angle information, determine an output state of a transformer; and, (02) when it is determined that the output state of the transformer is a preset state, controlling on the basis of the first phase shift angle information and the second phase shift angle information to determine the output of the transformer.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

A planar device and a switching function circuit, used for shielding the potential to which high-frequency jumping occurs on a chip in a planar device and reducing the electromagnetic interference caused by the potential to which high-frequency jumping occurs on the chip. The planar device comprises at least one chip and a substrate; the chip comprises a base; the base is arranged on the side of the chip close to the substrate, and the base is electrically connected to the substrate; at least one source and at least one gate are provided on the side of the chip away from the substrate; and the at least one source and the at least one gate are electrically connected to the chip, respectively; and the substrate is connected to a target potential point, and the target potential point is used for keeping the potential of the substrate in a low-frequency change state or a constant state.

Classes IPC  ?

• H01L 23/552 - Protection contre les radiations, p. ex. la lumière
• H01L 25/065 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans une seule des sous-classes , , , , ou , p. ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans le groupe
• H01L 25/07 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans une seule des sous-classes , , , , ou , p. ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans la sous-classe
• H01L 23/04 - ConteneursScellements caractérisés par la forme
• H02M 1/44 - Circuits ou dispositions pour corriger les interférences électromagnétiques dans les convertisseurs ou les onduleurs

Abrégé

A method and device for controlling an inverter, an inverter and a photovoltaic system are provided. Maximum voltage among input terminals of multiple boost circuits included in the inverter and a minimum voltage for grid-connection are obtained. When the maximum voltage is greater than or equal to the minimum voltage, a first boost circuit in the inverter is controlled to stop boosting. The voltage at an output terminal of a second boost circuit is controlled to be increased to the maximum voltage, and the second boost circuit includes other boost circuits in the inverter other than the first boost circuit.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 3/46 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs

Abrégé

Low-voltage equipment, a transformer substation, and a new energy power station, relating to the technical field of energy storage power generation. The low-voltage equipment comprises: a housing, a plurality of accommodating cavities being defined in the housing, and the plurality of accommodating cavities being respectively used for mounting a first-type electronic device, a second-type electronic device, and a third-type electronic device; and a first heat dissipation apparatus, a second heat dissipation apparatus, and a third heat dissipation apparatus, the first heat dissipation apparatus, the second heat dissipation apparatus and the third heat dissipation apparatus being respectively mounted in the accommodating cavities where the first-type electronic device, the second-type electronic device and the third-type electronic device are located.

Classes IPC  ?

• H02B 1/26 - EnveloppesLeurs parties constitutives ou accessoires à cet effet

Abrégé

A substation and a new energy power station, relating to the technical field of energy storage and power generation. The substation comprises: an integrated platform; a low-voltage device (100) and a voltage boost device (200), the low-voltage device and the voltage boost device both being mounted on the integrated platform, and the low-voltage device being electrically connected to the voltage boost device; and a string inverter unit (400), the string inverter unit being located outside of the integrated platform, and the string inverter unit being electrically connected to the low-voltage device. According to the described substation, the space of the low-voltage device and the voltage boost device on the integrated platform can be increased, thereby facilitating upgrading and capacity expansion of the low-voltage device and the voltage boost device by personnel.

Classes IPC  ?

• H02B 7/06 - Postes de transformation pour la distribution, p. ex. pour réseau urbain

Abrégé

The present application relates to the technical field of power electronics, and discloses a planar device and a switching function circuit, used for shielding a high-frequency fluctuating potential on a chip in a planar device, thereby reducing electromagnetic interference caused by the high-frequency fluctuating potential on the chip. The planar device comprises at least one chip and a substrate; the chip comprises a base; the base is arranged on the side of the chip close to the substrate; the base is electrically connected to the substrate; at least one source and at least one gate are provided on the side of the chip away from the substrate; the at least one source and the at least one gate are separately electrically connected to the chip; the substrate is connected to a target potential point; and the target potential point is used for keeping the potential of the substrate to be in a low-frequency change state or a constant state.

Classes IPC  ?

• H01L 23/552 - Protection contre les radiations, p. ex. la lumière
• H01L 25/065 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans une seule des sous-classes , , , , ou , p. ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans le groupe
• H01L 25/07 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans une seule des sous-classes , , , , ou , p. ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans la sous-classe
• H01L 23/14 - Supports, p. ex. substrats isolants non amovibles caractérisés par le matériau ou par ses propriétés électriques
• H02M 1/44 - Circuits ou dispositions pour corriger les interférences électromagnétiques dans les convertisseurs ou les onduleurs
• H02M 1/00 - Détails d'appareils pour transformation
• H03K 17/687 - Commutation ou ouverture de porte électronique, c.-à-d. par d'autres moyens que la fermeture et l'ouverture de contacts caractérisée par l'utilisation de composants spécifiés par l'utilisation, comme éléments actifs, de dispositifs à semi-conducteurs les dispositifs étant des transistors à effet de champ

Abrégé

A communication control method and apparatus, a host device, a slave device, and a photovoltaic system. The communication control method is applied to the photovoltaic system, and the host device is connected to the slave device by means of a power cable. The communication control method comprises: the host device communicates with the slave device by using a first band, and collects statistics about the communication packet loss rate of the slave device within a specified historical time period; and if the communication packet loss rate of the slave device is greater than a preset packet loss rate threshold, the host device controls the communication band of the slave device to switch to a second band, wherein the band value of the second band is lower than that of the first band. The host device uses a low-frequency band to communicate with the slave device, reducing the packet loss rate of communication, improving the stability of communication quality.

Classes IPC  ?

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

Abrégé

An energy storage system, a method for cell inspection by the energy storage system, and an energy storage station are provided. The energy storage system includes a PCS and at least one battery cluster. The battery cluster includes multiple cells. The method includes: sending an inspection command to instruct the PCS to regulate power, upon receipt of a cell inspection command; determining a current signal of the battery cluster; and for each of the plurality of cells, determining a voltage signal of the cell, calculating an impedance of the cell based on the current signal and the voltage signal, and determining based on the impedance whether the cell malfunctions. Therefore, aging of the cells can be known to protect other cells from being affected by a malfunctioning cell, thereby improving reliability. Further, all the cells can be inspected simultaneously, and therefore any malfunctioning cell can be rapidly detected.

Classes IPC  ?

• G01R 31/389 - Mesure de l’impédance interne, de la conductance interne ou des variables similaires
• G01R 31/3835 - Dispositions pour la surveillance de variables des batteries ou des accumulateurs, p. ex. état de charge ne faisant intervenir que des mesures de tension
• G01R 31/396 - Acquisition ou traitement de données pour le test ou la surveillance d’éléments particuliers ou de groupes particuliers d’éléments dans une batterie

Abrégé

The present application relates to an energy storage system and a maintenance method therefor. The method comprises: by means of a battery management system (BMS), receiving a charge/discharge instruction which is transmitted by a power conversion system (PCS) and indicates a target SOC value; and on the basis of the charge/discharge instruction, controlling a target battery module to perform charging/discharging, and when the target battery module reaches the target SOC value during charging/discharging, feeding back SOC matching completion information to a cloud server by means of the PCS, so as to instruct a cloud server to determine whether to execute battery supplementing or battery swapping. By means of the method, on the basis of a received charge/discharge instruction, a target battery module can be controlled to perform charging/discharging, such that an SOC of a new battery module and an SOC of a used battery module are adjusted to be the same, thereby avoiding the problem of the actual capacity of the energy storage system being reduced due to the difference between the SOC of the new battery module and the SOC of the used battery module.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• H01M 10/44 - Méthodes pour charger ou décharger

Abrégé

An energy storage container. The energy storage container comprises: a box frame configured in a frame structure; a plurality of partition plates connected to the box frame, the plurality of partition plates separating the interior of the energy storage container from the exterior of the energy storage container, wherein at least one of the plurality of partition plates is a door leaf rotatably connected to the box frame, the door leaf is provided with an outer panel and an inner panel which are oppositely arranged, and when the door leaf is in a closed state, the outer panel is located on the side of the inner panel facing said exterior; a first sealing piece provided along the edge of the door leaf, the first sealing piece being connected between the outer panel and the box frame; a mounting piece connected to the box frame and configured to extend along at least part of the edge of the door leaf, the mounting piece being provided with a mounting surface parallel to the inner panel of the corresponding door leaf; and a second sealing piece provided on the mounting surface, wherein when the door leaf is in the closed state, the second sealing piece is sandwiched between the inner panel and the mounting surface. According to the energy storage container, the sealing performance of the energy storage container can be improved.

Classes IPC  ?

• H02B 1/46 - BoîtiersParties constitutives ou accessoires
• B65D 90/00 - Parties constitutives, détails ou accessoires des grands réceptacles

Abrégé

A ZVS (Zero Voltage Switching) protection method, apparatus and device for an inverter, and a storage medium. The inverter comprises a transformer and a secondary-side bridge arm circuit, which comprises a first bridge arm and a second bridge arm that are connected in series, wherein a secondary-side winding of the transformer is connected to the midpoint of the first bridge arm and the second bridge arm. The ZVS protection method for an inverter comprises: in response to a switching control signal, collecting the present secondary-side current of an inverter; if the secondary-side current does not meet a ZVS condition for a target working condition corresponding to the switching control signal, executing a wave-blocking operation on a secondary side of the inverter; and if the secondary-side current meets the ZVS condition for the target working condition corresponding to the switching control signal, controlling a secondary-side bridge arm circuit to perform bridge-arm switching. Whether a secondary side realizes ZVS is monitored in real time, and bridge-arm switching is performed only when it is ensured that a secondary-side current can realize ZVS; otherwise, a wave-blocking operation is executed on the secondary side of an inverter, thereby realizing the switching cycle-level protection of the secondary side while not increasing a control frequency.

Classes IPC  ?

• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• 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

Produits et services

Fuel; candles; dust removing preparations; electrical energy; electricity; fuel gas; hydrocarbon fuels; solidified gas [fuel]; hydrogen fuel. Machines for generating hydrogen and oxygen by electrolysis; machines for the electronics industry; gas separating installations; electricity generators; compressors [machines]; valves [parts of machines]; pumps [parts of machines, engines or motors]; compressed air machines. Electro-dynamic apparatus for the remote control of signals; humanoid robots with artificial intelligence for use in scientific research; material testing instruments and machines; electrolysis apparatus for laboratory use; inductors [electricity]; measuring devices, electric; materials for electricity mains [wires, cables]; semiconductors; condensers [capacitors]; integrated circuits; conductors, electric; remote control apparatus; ultracapacitors for energy storage; transformers [electricity]; electronic integrated circuits; converters, electric; semi-conductor devices; distribution boxes [electricity]; chips [integrated circuits]; automatic solar tracking sensors; electric current control devices; video screens; voltage regulators; inverters [electricity]; current rectifiers; voltage stabilizing power supplies; electric control devices for energy management; automation systems for power plants; electric apparatus for commutation; ionization apparatus not for the treatment of air or water; protection devices for personal use against accidents; battery chargers; photovoltaic apparatus and installations for generating solar electricity; electric car charging piles; battery charging devices for motor vehicles; photovoltaic cells; solar panels for the production of electricity; photovoltaic apparatus for the production of electricity; mobile power supply [rechargeable batteries]. Electric vehicles; vehicles for locomotion by land, air, water or rail; driverless cars [autonomous cars]; motors, electric, for land vehicles; bicycles; trolleys; tires for vehicle wheels; pontoon bridge of rubber; inclined ways for boats; pontoon boats. Rubber, raw or semi-worked; gas bag of rubber; plastic materials in the form of rods; plastic materials in the form of boards; floating anti-pollution barriers; dielectrics [insulators]. Construction; construction of wind power plants; installation of apparatus for generating power; installation, maintenance and repair of computers and computer peripherals; repair and maintenance of wind power plants; construction of sunrooms; rental of cleaning machines; installation and maintenance of photovoltaic installations; repair or maintenance of power distribution or control machines and apparatus; repair or maintenance of machines and systems for manufacturing integrated circuits. Production of energy; rental of electricity generators; rental of batteries; generation of electricity from wave, wind and solar energy; processing of gas; generation of solar electricity; generation of electricity from wind energy; production of electrical energy from renewable sources; production of hydroelectric power; production of renewable green energy. Server hosting; computer software design; monitoring of computer system operation by remote access; software as a service [saas]; maintenance of computer software; consultancy in the field of energy-saving; cloud computing; electronic data storage.

Abrégé

A method and a device for locating a fault are provided. The method is applied to an energy storage system, which includes a first battery module, a second battery module, a sensor, and a PCS. A first branch where the first battery module is arranged and a second branch where the second battery module is arranged are connected in parallel and are electrically connected to the sensor. The PCS is electrically connected to the first and the second battery modules. The method includes: switching the first and second branches to a target state and acquiring a second signal sensed by the sensor in the target state, in response to a first signal sensed by the sensor meeting a first preset condition; locating the fault according to the first signal and the second signal; and disconnecting a branch where the fault is located.

Classes IPC  ?

• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
• H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion

Abrégé

A method for processing arc fault, an inverter and a photovoltaic system are provided in the present disclosure. The method includes: after an inverter detects suspected arc, stopping outputting a control signal to a first DC/DC conversion circuit where suspected arc occurs, and maintaining remaining DC/DC conversion circuits operating normally; waiting for a first preset period, determining whether a current at the power supply side of the first DC/DC conversion circuit is less than a first preset current; determining that arc fault occurs, in a case that the current at the power supply side is less than the first preset current.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02H 7/12 - 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
• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
• H02M 1/00 - Détails d'appareils pour transformation
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02S 50/00 - Surveillance ou tests de systèmes PV, p. ex. équilibrage de charge ou identification des défauts

Abrégé

A method and a device for detecting arcing in an energy storage system, and an energy storage system are provided. The method includes: detecting an arcing feature in current of varying frequencies through a direct current bus of a power conversion system (PCS) unit, where the PCS unit is arranged in a PCS in the energy storage system; detecting a sudden change in port voltage of the PCS unit, in response to success in detecting the arcing feature; and determining that an electric arc occurs in a circuit where the PCS unit is arranged, in response to success in detecting the sudden change.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02H 1/00 - Détails de circuits de protection de sécurité
• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion

Abrégé

Disclosed in the present application are a suspension capacitor three-level Boost converter and a control method, comprising: a first end and a second end of an inductor are respectively connected to a positive input end of a Boost converter and an anode of a first diode, and an anode and a cathode of a second diode are respectively connected to a cathode of the first diode and a positive output end of the Boost converter; a first end and a second end of a first power device are respectively connected to a second end of the inductor and a first end of a second power device, and a second end of the second power device is connected to a negative input end of the Boost converter; a first end and a second end of a first switch are respectively connected to the second end of the first power device and a first end of a suspension capacitor, and a second end of the suspension capacitor is connected to the cathode of the first diode; and a controller is used for controlling the disconnection moment of the first switch to lag behind the disconnection moment of the first power device and the disconnection moment of the second power device, so as to avoid a switch device from bearing an over-voltage failure risk.

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

Abrégé

Disclosed in the present application are an inverter and a heat dissipation structure thereof. The heat dissipation structure of an inverter comprises: a first cabinet, a second cabinet, a liquid-cooling radiator and a first liquid-cooling heat exchanger, wherein the first cabinet comprises an electronic cavity; the liquid-cooling radiator is configured to perform heat dissipation on a power module of an inverter power module part, and a cooling liquid channel of the liquid-cooling radiator is in communication with a cooling liquid channel of the first liquid-cooling heat exchanger; the heat dissipation structure of an inverter is provided with a heat dissipation cavity, which is configured to allow air to flow through, so as to cool a cooling liquid in the first liquid-cooling heat exchanger; and the second cabinet comprises a direct-current power distribution cavity, an alternating-current power distribution cavity and a filtering reactance cavity, at least one of the direct-current power distribution cavity, the alternating-current power distribution cavity and the filtering reactance cavity forming a circulation air duct together with the electronic cavity. The heat dissipation structure of an inverter improves the heat dissipation efficiency, reduces heat dissipation costs, and further improves the protection performance of the entire inverter.

Classes IPC  ?

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

Abrégé

A method and apparatus for predicting the state of capacity of a battery, and a device, a medium and an energy storage system. The method comprises: acquiring first battery operating condition information (S101); on the basis of a model application condition that the first battery operating condition information meets, determining from a preset prediction model set a plurality of target prediction models which correspond to the model application condition (S102); using the plurality of target prediction models to predict the state of capacity of a battery on the basis of charge/discharge data of the battery, so as to obtain a plurality of corresponding prediction results (S103); and fusing the plurality of prediction results, so as to obtain a fused prediction result (S104). In the method, a plurality of suitable prediction models are selected on the basis of battery operating condition information to predict the state of capacity of a battery, and prediction results of the plurality of prediction models are fused, such that a finally obtained prediction result is relatively accurate.

Classes IPC  ?

• G01R 31/367 - Logiciels à cet effet, p. ex. pour le test des batteries en utilisant une modélisation ou des tables de correspondance
• G01R 31/392 - Détermination du vieillissement ou de la dégradation de la batterie, p. ex. état de santé

Abrégé

An integrated inductor, a circuit assembly, and an inverter. The integrated inductor comprises: a first magnetic core (1), a second magnetic core (2), a third magnetic core (3), and a plurality of windings (4), wherein the first magnetic core (1) surrounds the second magnetic core (2), and the second magnetic core (2) is spaced apart from the first magnetic core (1); each wire turn of each winding (4) is wound around the first magnetic core (1) and the second magnetic core (2), any two windings (4) are spaced apart from each other, and a common-mode inductor is formed between each winding (4) and the first magnetic core (1); and no winding is wound around the third magnetic core (3), a closed magnetic path is formed between the region where the winding (4) is wound on the second magnetic core (2) and the third magnetic core (3), and a differential-mode inductor is formed between each winding (4) and the closed magnetic path. The first magnetic core mainly provides a common-mode component, and the second magnetic core mainly provides a differential-mode component. Such a configuration increases the sectional area of each magnetic core, thereby increasing paths of differential-mode and common-mode magnetic lines of force, such that the first magnetic core and the second magnetic core are not prone to saturation, thereby increasing a common-mode inductance value of the first magnetic core and a differential-mode inductance value of the second magnetic core. By configuring a third magnetic core, an air path through which a magnetic flux leakage travels is shortened, air magnetic resistance is reduced, a differential-mode magnetic flux is increased, and an inductance value of the integrated inductor is further increased.

Classes IPC  ?

• H01F 27/24 - Noyaux magnétiques
• H01F 17/00 - Inductances fixes du type pour signaux

Abrégé

The present application discloses an inverter and a heat dissipation structure thereof. The heat dissipation structure of the inverter comprises a first cabinet body and a second cabinet body. The first cabinet body comprises a heat dissipation cavity and an electronic cavity; the electronic cavity is used for accommodating an inverter power module part; the heat dissipation cavity is used for allowing air to flow through so as to cool a power module heat dissipation device; and the power module heat dissipation device is used for dissipating heat of a power module of the inverter power module part. The second cabinet body comprises a direct-current power distribution cavity and an alternating-current power distribution cavity; the direct-current power distribution cavity is used for accommodating a direct-current power distribution part; the alternating-current power distribution cavity is used for accommodating an alternating-current power distribution part; and at least one of the direct-current power distribution cavity and the alternating-current power distribution cavity is communicated with the electronic cavity to form a first circulating air duct. In the heat dissipation structure of the inverter, the heat dissipation of at least one of the direct-current power distribution part and the alternating-current power distribution part is coupled with the heat dissipation of the device in the electronic cavity, thereby reducing the heat dissipation cost.

Classes IPC  ?

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

The present utility model relates to the technical field of energy storage systems. Provided is an energy storage system, comprising an energy storage cabinet and an accommodating member, wherein the accommodating member is arranged inside the energy storage cabinet, and the accommodating member is used for accommodating at least two fire-fighting cables of different specifications; and the accommodating member is made of a fire-resistant and flame-retardant material. The fire-fighting cables of different specifications in the energy storage system can be mounted by means of one accommodating member, such that the present utility model can be applied to the laying and mounting operation of fire-fighting cables of different specifications in various regions, and has a high degree of universality.

Classes IPC  ?

• H02B 1/32 - Montage de dispositifs à l'intérieur de ces enveloppes
• A62C 3/00 - Prévention, limitation ou extinction des incendies spécialement adaptées pour des objets ou des endroits particuliers
• H02G 3/04 - Tubes ou conduits de protection, p. ex. échelles à câbles ou goulottes de câblage

Abrégé

A battery pack, which comprises: a housing (10) having an accommodating space (11) and a pressure relief space (12); and a cell assembly (20) and a sealing assembly (30), wherein the cell assembly (20) is located in the accommodating space (11); the sealing assembly (30) seals a gap between the cell assembly (20) and the housing (10) and also seals a gap between one side of a pressure relief valve in the cell assembly (20) and the pressure relief space (12); the cell assembly (20) isolates the accommodating space (11) from the pressure relief space (12); and the pressure relief space (12) is configured to discharge a combustible gas and a high-temperature electrolyte generated by the cell assembly (20) during thermal runaway, thereby effectively preventing the combustible gas and the high-temperature electrolyte from entering the interior of the cell assembly (20) and causing damage to the cell assembly (20), and solving the problem in the prior art whereby battery packs are unable to discharge the combustible gas and the high-temperature electrolyte in a timely manner when undergoing thermal runaway.

Classes IPC  ?

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

Abrégé

A photovoltaic connector includes a socket, and plugs configured to be inserted into the socket, wherein each plug is provided with at least one photovoltaic cable configured to be electrically connected to the socket; the socket is configured to be connected to at least two plugs in an inserted manner; and/or, the number of the photovoltaic cables of at least one plug is at least two. In the photovoltaic connector, if the socket is configured to be connected to at least two plugs in an inserted manner, the area on the box that is occupied by the socket is reduced, thereby reducing the overall size of the box. If the number of the photovoltaic cables of at least one plug is at least two, the area on the box that is occupied by the photovoltaic connector is reduced, thereby reducing the overall size of the box.

Classes IPC  ?

• H01R 13/514 - SoclesBoîtiers formés comme un bloc ou un assemblage modulaire, c.-à-d. composés de parties coopérantes pourvues de pièces de contact ou maintenant entre elles des pièces de contact
• H01R 13/52 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes

Abrégé

An energy storage converter and an energy storage system are provide. The energy storage converter includes: a DC switching power supply circuit configured to provide a first power supply using DC power from the DC side port; an AC switching power supply circuit configured to provide a second power supply using AC power from the AC side port; a power supply circuit configured to supply power to the energy storage converter using the first power supply or the second power supply; and a control circuit configured to, based on an operation state of the energy storage converter, control the DC switching power supply circuit or the AC switching power supply circuit to provide the power supply circuit with power supply. A power supply mode is selected based on an operation state of the energy storage converter. The DC/AC switching power supply circuit independently supplies power at the same time.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H02J 1/02 - Dispositions pour réduire les harmoniques ou les ondulations
• H02J 9/00 - Circuits pour alimentation de puissance de secours ou de réserve, p. ex. pour éclairage de secours

Abrégé

An electronic element and a high-frequency winding thereof are provided. At least one power transmission line of the high-frequency winding is a multi-layer stranded wire, the multi-layer stranded wire includes at least two stacked layers of cables, and each layer of the cables includes multiple cables which are sequentially arranged; and any layer of the cables in the multi-layer stranded wire is at least stranded with an adjacent layer of cables, a cross section obtained by cutting the multi-layer stranded wire in any plane perpendicular to the lengthwise direction of the power transmission line includes cross sections of multiple layers of cables, which layers are stacked in a first direction, the cross section of each layer of the cables includes cross sections of multiple cables, which are sequentially arranged in a second direction, and the first direction is perpendicular to the second direction.

Classes IPC  ?

• H01F 27/28 - BobinesEnroulementsConnexions conductrices

Abrégé

A hybrid energy storage coordination control method, comprising the following steps: S101: determining energy storage application scenes, and acquiring a total control demand amount in the energy storage application scenes; S102: on the basis of the energy storage application scenes and a mapping relation, determining energy storage groups participating in energy storage coordination, wherein the mapping relation comprises energy storage group set sequences which correspond to the energy storage application scenes and are sorted in descending order of a first priority value; S103: acquiring a maximum adjustable amount set sequence of the energy storage groups participating in energy storage coordination; S104: on the basis of the total control demand amount and the maximum adjustable amount set sequence, determining an actual adjustment amount sequence of each energy storage group participating in energy storage coordination; and S105, on the basis of the actual adjustment amount sequence, delivering a control instruction. The method fully considers the time characteristics of different types of energy storage and application scenes thereof, can satisfy the requirements of application scenes of different time scales, and can achieve translation and optimization of the output characteristics of a hybrid energy storage system; and the situation of repeated response caused by the large number of energy storage groups participating in response in a hybrid energy storage system is avoided, thereby improving the response efficiency of the hybrid energy storage system. The present invention further relates to a system.

Classes IPC  ?

• H02J 15/00 - Systèmes d'accumulation d'énergie électrique
• H02J 3/28 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie
• H02J 3/30 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des machines dynamo-électriques accouplées à des volants
• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion

Abrégé

A battery-cell heat dissipation structure and an energy storage system, which relate to the technical field of energy storage systems. The battery-cell heat dissipation structure comprises a case and a battery cell, wherein a mounting cavity is formed in the case; a plurality of thermally conductive portions are arranged on a cavity wall surface of the mounting cavity; the battery cell is arranged in the mounting cavity; and a plurality of heat dissipation wall surfaces are provided on the battery cell, and same are in contact with the plurality of thermally conductive portions in a one-to-one correspondence manner. By means of the battery-cell heat dissipation structure, a better heat dissipation effect for the battery cell is achieved, and when a system operates, same has a lower temperature rise, and a smaller temperature difference; and the heat of the battery cell dissipates from the plurality of heat dissipation wall surfaces, and the surface utilization rate of the battery cell is also relatively high, thereby facilitating an improvement in the performance of the battery cell.

Classes IPC  ?

• H01M 10/613 - Refroidissement ou maintien du froid

Abrégé

A battery module, and an energy storage system and a control method therefor. When a corresponding preset condition is satisfied, battery modules can be switched in or out of a system by means of the on-off of a main loop on-off control circuit and a bypass on-off control circuit, so that the battery modules currently connected into the system can be adjusted in real time, and thus the battery modules in the system can satisfy the corresponding preset condition one by one, namely achieving the same state (for example, achieving SOC equalization), without causing energy waste. Moreover, a main loop buffer circuit or a bypass buffer circuit is provided in the battery module, so that energy impact generated when the battery module is switched in or cut out of the system can be absorbed.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• 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 50/574 - Dispositifs ou dispositions pour l’interruption du courant
• H01M 50/581 - Dispositifs ou dispositions pour l’interruption du courant en réponse à la température
• H01M 50/583 - Dispositifs ou dispositions pour l’interruption du courant en réponse au courant, p. ex. fusibles

Abrégé

Provided are a power supply circuit, a battery monitoring circuit, and an energy storage device. The power supply circuit is configured to supply power to a management unit of a battery. The battery is connected to an external circuit by a safety protection switch. The power supply circuit includes a voltage conversion circuit, a first line, and a second line including a first switch. The voltage conversion circuit is connected to two terminals of the safety protection switch through the first line and the second line respectively, and is configured to convert an output voltage of the battery into an operating voltage of the management unit and supply power to the management unit. The first switch is configured to be switched on when the safety protection switch is switched off, to cause the battery to supply power to the management unit by the voltage conversion circuit via the second line.

Classes IPC  ?

• 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
• G01R 31/3842 - Dispositions pour la surveillance de variables des batteries ou des accumulateurs, p. ex. état de charge combinant des mesures de tension et de courant

Abrégé

The present application discloses a black start (BS) method and a power generation system. The method comprises: a BS controller or an energy management system (EMS) sending, to black-started power conversion systems (PCSs), an instruction of boosting to a first preset voltage, wherein alternating current sides of the black-started PCSs are connected in parallel together to connect a load, and the first preset voltage is less than a second preset voltage; when the BS controller or the EMS detects that the voltages of the black-started PCSs reach the first preset voltage, issuing a load input instruction; and once the load is input, sending a boost instruction to all the black-started PCSs, so that the voltages of all the black-started PCSs rise from the first preset voltage to the second preset voltage. The solution can successfully input the load, so that the BS is successful.

Classes IPC  ?

• H02J 3/28 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

A battery heating system for a household energy-storage integrated machine comprises: a battery (102), a heating film (104), a first switch (105), a circuit breaker (103), a power conversion system (106) and a direct-current bus (107), wherein the power conversion system (106) is used for supplying a direct current to the battery heating system by means of the direct-current bus (107), and is further used for adjusting the voltage of the direct-current bus (107); the circuit breaker (103) is used for controlling the state of connection between the battery (102) and the direct-current bus (107); the first switch (105) is used for controlling the state of connection between the heating film (104) and the direct-current bus (107); and the heating film (104) is used for heating the battery (102). The power conversion system (106) and the direct-current bus (107) are provided in the battery heating system for a household energy-storage integrated machine, and therefore when it is necessary to use the heating film (104) to heat the battery (102), a power grid can be used for supplying power, and a direct current can also be used during a power grid outage, so as to heat the battery (102), thus meeting the battery heating requirement in case of a power grid outage.

Classes IPC  ?

• H01M 10/615 - Chauffage ou maintien de la chaleur
• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion

Produits et services

Providing scientific information, advice and consultancy relating to carbon offsetting; consultancy in the field of energy-saving; it consulting services relating to installation, maintenance and repair of computer software; information technology consulting relating to computer software design; software as a service, namely software for controlling and management of apparatus for energy management; software as a service, namely software for the presentation of data of apparatus for energy management; software as a service, namely software for providing multiple user access to an internet platform regarding energy management; software as a service, namely software for the operation of alternative energy generation and storage systems; software as a service, namely software for appointment setting and coordination as well as for coordinating sales in the field of installation of solar energy systems and alternative energy products, for customer relationship management for prospective and existing solar customers, and for generating and disseminating advertising and marketing of solar energy systems and alternative energy products; monitoring of computer system operation by remote access; installation of computer software; creating and maintaining websites for others; updating of computer software; computer software design; computer programming.

Abrégé

The present application provides an energy storage system and a control method for the energy storage system, applied to the technical field of energy storage. The energy storage system comprises a plurality of battery clusters and a plurality of control units, and the battery clusters are in one-to-one correspondence with the control units. Each control unit is used for: when a battery parameter is not lower than a first battery parameter, controlling the corresponding battery cluster to discharge at constant current; and when the battery parameter is lower than the first battery parameter, controlling the corresponding battery cluster to charge at constant current, wherein the first battery parameter is a battery parameter when the capacity of the battery cluster reaches a safe capacity lower limit. By controlling the battery clusters meeting conditions in the energy storage system to charge or discharge at the same constant current, the output power or input power of the energy storage system reaches the maximum power that the energy storage system can currently reach.

Classes IPC  ?

• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion

Abrégé

Disclosed in the present invention is an energy storage system switching management method, comprising: determining a working state of each battery system on the basis of the current of each battery system, wherein the working state includes a static state, a charging state and a discharging state; for the battery systems in the static state, carrying out static open-circuit voltage calibration on the battery systems; for the battery systems in the charging state, carrying out switching management on the charging process of each battery system on the basis of the total battery voltage or the state of charge of each battery system; and for the battery systems in the discharging state, carrying out switching management on the discharging process of each battery system on the basis of the total battery voltage or the state of charge of each battery system. Therefore, according to the present invention, different working states can be accurately distinguished, and then corresponding switching management is carried out on the basis of different working conditions, so that the efficiency is relatively high, and the effect of switching management is good.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H01M 10/44 - Méthodes pour charger ou décharger
• 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

Abrégé

Provided are an outdoor energy storage cabinet and an energy storage system. The outdoor energy storage cabinet includes an outer cabinet body, a protective layer, and at least one fire protection wire conduit. The outer cabinet body defines an accommodation cavity. The accommodation cavity is configured to accommodate an electronic device and a fire protection device. The protective layer is attached to an inner wall of the outer cabinet body. A wiring space is formed at a surface of the protective layer close to the outer cabinet body. The at least one fire protection wire conduit is arranged in the wiring space. Each of the at least one fire protection wire conduit has an end configured to be in an electrical connection and/or a communication connection with the electronic device and another end configured to be in a corresponding electrical connection and/or communication connection with the fire protection device.

Classes IPC  ?

• H01M 50/383 - Moyens pare-flammes ou moyens de prévention de l’allumage
• A62C 3/16 - Prévention, limitation ou extinction des incendies spécialement adaptées pour des objets ou des endroits particuliers dans les installations électriques, p. ex. chemins de câbles
• H01M 10/613 - Refroidissement ou maintien du froid
• H01M 10/627 - Installations fixes, p. ex. ensemble de production d’énergie tampon ou de production d’énergie de secours
• H01M 10/6563 - Gaz avec circulation forcée, p. ex. par des soufflantes
• H01M 10/658 - Moyens de commande de la température associés de façon structurelle avec les éléments par isolation ou protection thermique
• 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
• H01M 50/298 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports caractérisés par le câblage des blocs de batterie

Abrégé

An electrical device includes a box body and multiple hanging members. Components are provided outside the box body; the handing members are respectively fixed to the components, and a first handing member and a second hanging member in the hanging members are distributed on two sides of the box body. The hanging members in the electrical device are mounted on the components outside the box body instead of being directly mounted on the box body. An electrical device hanging system and a photovoltaic power station having the electrical device are further provided.

Classes IPC  ?

• H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques Détails

Abrégé

A fault detection method and a fault protection method for a power conversion system, and a power conversion system are provided, which relate to the technical field of fault detection for circuits. The fault detection method includes: controlling, when the power conversion system operates in a reactive mode, an alternating current pre-charge power supply to operate to charge a bus capacitor of the power conversion system, where the bus capacitor supplies power to a digital signal processor (DSP) through a first switch power supply (SPS), determining whether the DSP is energized to obtain a first determination result, and determining that the bus capacitor is short-circuited if the first determination result indicates that the DSP is de-energized. According to the present disclosure, when the bus capacitor of the power conversion system is short-circuited, the short-circuit fault of the bus capacitor can be detected.

Classes IPC  ?

• G01R 31/52 - Test pour déceler la présence de courts-circuits, de fuites de courant ou de défauts à la terre
• H02M 5/04 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p. ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases sans transformation intermédiaire en courant continu par convertisseurs statiques

Abrégé

The present application provides a power conversion system and a control method therefor. According to the control method, upon receipt of a zero-power operation instruction, an alternating-current grid connection switch on the alternating-current side of each power unit in a power conversion system is controlled to be kept closed, and the power units are controlled to respectively operate in a charging mode and a discharging mode, wherein the total charging power and the total discharging power of the power units satisfy a zero-power grid connection requirement. In this way, operation in a zero-power mode can be implemented, and all power units are enabled to generate waves, thereby avoiding problems such as burnout of an alternating-current capacitor that would easily occur due to wave blocking, avoiding the risk of system resonance, and enhancing system stability. Moreover, the zero-power mode of the power conversion system can be implemented without increasing any hardware cost, and the demand of power grid scheduling is satisfied.

Classes IPC  ?

• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion
• H02J 3/01 - Dispositions pour réduire les harmoniques ou les ondulations
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries

Abrégé

An inverter and a photovoltaic system, relating to the technical field of electrical devices. The inverter comprises: a housing, the housing defining an accommodating cavity used for mounting an electronic device, the lower surface of the housing comprising a first area and a second area, the first area being used for gripping, and the housing being provided with wiring ports; cooling fins, the cooling fins being mounted in the second area; and wiring terminals, the wiring terminals being electrically connected to the wiring ports of the housing, wherein the power of the inverter is less than or equal to 5 kW.

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