A sodium ion battery positive electrode sheet and a sodium ion battery. The positive electrode sheet comprises a positive electrode current collector and a positive electrode film layer arranged on at least one surface of the positive electrode current collector, the positive electrode film layer comprising a positive electrode active material, a first additive and a second additive, the first additive being at least one of boric acid, metaboric acid and a borate, and the second additive being a hydrophobic polymer.
A battery cell (100), a battery (200) and an electrical device (300). The battery cell (100) comprises: an electrode assembly (10); a casing (20) configured to accommodate the electrode assembly (10), the casing (20) comprising a first wall portion (21); and a pressure relief portion (30) arranged on the first wall portion (21), wherein a score groove (31) is formed in the pressure relief portion (30), a rupture initiation section (32) and an extension section (33) which are connected to each other are formed in the bottom of the score groove (31), and the pressure relief portion (30) is configured to enable, when the internal pressure or temperature of the casing (20) reaches a threshold, the rupture initiation section (32) to rupture prior to the extension section (33).
Disclosed in the present application are a case, a battery and an electric device. The case comprises a heat exchange assembly, electrical connection assemblies and sealing assemblies. The heat exchange assembly comprises a first heat exchange plate and a second heat exchange plate, which are arranged in a stacked manner, wherein a heat exchange flow channel is provided between the first heat exchange plate and the second heat exchange plate, and the heat exchange flow channel is configured to exchange heat with battery cells. The electrical connection assemblies are connected to the heat exchange assembly, and are configured to be electrically connected to the battery cells. The sealing assemblies are arranged in the circumferential direction of each electrical connection assembly, and penetrate in the direction of the thickness of the heat exchange assembly and are connected to the first heat exchange plate and the second heat exchange plate. The sealing assemblies are arranged around the electrical connection assemblies, such that the connection strength of the heat exchange assembly near the electrical connection assemblies can be improved, the sealing performance of the heat exchange assembly is improved, and thus the operational stability of the battery is improved.
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 10/0585 - Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
H01M 4/133 - Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M 4/136 - Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 50/40 - SeparatorsMembranesDiaphragmsSpacing elements inside cells
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
H01M 50/204 - Racks, modules or packs for multiple batteries or multiple cells
The present disclosure provides a battery cell, a battery, and an electric apparatus. The battery cell comprises an electrode assembly and an electrolyte, wherein the electrode assembly comprises a negative electrode sheet; the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer located on at least one side of the negative electrode current collector; the negative electrode film layer comprises a negative electrode active material; the negative electrode active material comprises a silicon-carbon composite material, and the silicon-carbon composite material comprises a carbon material matrix having a pore structure and a silicon-based material located in the pore structure of the carbon material matrix; and a ratio of the mass of the electrolyte to the capacity of the battery cell is 1.2 g/Ah-2.0 g/Ah. The battery of the present disclosure can achieve both high energy density and excellent cycle performance.
A battery (100) and a vehicle (200). The battery (100) comprises: a lower case (10); a temperature control assembly (20), covering the lower case (10) and defining an accommodating cavity (101) with the lower case (10), wherein the temperature control assembly (20) is used for forming at least part of a floor of the vehicle (200); and battery cells (40), accommodated in the accommodating cavity (101). In the battery (100), the temperature control assembly (20) and the lower case (10) define the accommodating cavity (101) to accommodate the battery cells (40), that is, the temperature control assembly (20) is an upper cover of the case, and the temperature control assembly (20) is used as part of the case structure, so that the accommodating cavity (101) does not need to accommodate the temperature control assembly (20), reducing the volume required by the accommodating cavity (101), thereby reducing the size of the case, reducing the space occupied by the case, and improving the integration level of the case.
The present application relates to a battery and an electrical apparatus. The battery comprises a thermal management mechanism and a plurality of battery cells; the thermal management mechanism comprises a thermal management component; the thermal management component is located outside casings and is used for adjusting the temperature of the battery cells. The thermal management mechanism is arranged outside the casings, and the thermal management mechanism is in contact with the casings, so that the thermal management mechanism exchanges heat with the battery cells in a contact mode, so as to achieve temperature control of the battery cells, such as heat dissipation for temperature drop, and heating for temperature rise. By means of the design, the heat exchange effect between the thermal management mechanism and the battery cells is enhanced, and the reliability of the battery is improved.
Disclosed in the present application are welding equipment and a battery production line. The welding equipment comprises: a fixing assembly (11) used for fixing a battery (20); a welding assembly (12), comprising a mechanical arm (121) and a welding head (122), the welding head (122) being used for fixing a welding wire (123), and the mechanical arm (121) being used for controlling the welding head (122) to perform laser filler wire welding on the battery (20). The welding equipment of the present application can improve welding efficiency during processing of batteries (20).
A battery enclosure airtightness testing method, comprising: acquiring an internal real-time air pressure and an external real-time air pressure of a battery enclosure (S101); determining an internal and external real-time pressure difference of the battery enclosure on the basis of the internal real-time air pressure and the external real-time air pressure (S102); in response to the internal and external real-time pressure difference being less than or equal to a first preset pressure difference threshold, controlling a temperature control element to adjust an internal temperature of the battery enclosure, such that the internal and external real-time pressure difference is greater than or equal to a second preset pressure difference threshold, wherein the second preset pressure difference threshold is greater than the first preset pressure difference threshold; and determining the airtightness of the battery enclosure on the basis of a change relationship of the internal and external real-time pressure difference over time (S103). Further provided are a battery enclosure airtightness testing device, a computer-readable storage medium, a battery system and an electric apparatus.
G01M 3/32 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
10.
SOLAR CELL, PHOTOVOLTAIC SYSTEM, ELECTRICAL DEVICE, AND POWER GENERATION DEVICE
The present application discloses a solar cell, a photovoltaic system, an electrical device, and a power generation device. The solar cell comprises a light absorption layer and a hole transport layer, and the material of the hole transport layer comprises a self-assembly material and a light stabilization material; or, the solar cell comprises a light absorption layer, a passivation layer, and a hole transport layer, the passivation layer is provided between the light absorption layer and the hole transport layer, and the material of the passivation layer comprises a self-assembly material and a light stabilization material. The light stabilization material can reduce the probability that the passivation effect of self-assembly molecules of the self-assembly material disappears under the irradiation of sunlight, and improve the light stability of the self-assembly material, thereby improving the performance and stability of the device.
Disclosed in the present application are a battery unit, a battery and an electric device. The battery unit comprises a shell, an electrode terminal, an electrode assembly and an adapter assembly. The shell comprises a first side plate and a second side plate, which are arranged adjacent to each other. The electrode terminal comprises a first terminal post and a second terminal post, which are separately mounted on the first side plate. The electrode assembly is arranged inside the shell, and comprises a battery cell main body, at least one first tab and at least one second tab, wherein the first tab and the second tab protrude from the side of the battery cell main body facing the second side plate. The adapter assembly comprises a first adapter and a second adapter, wherein the first adapter and the second adapter both extend, from the side of the battery cell main body facing the first side plate, to the side of the battery cell main body facing the second side plate; the first adapter is connected to the first terminal post and the first tab; and the second adapter is connected to the second terminal post and the second tab. The battery unit provided in the present application can improve the space utilization rate, thereby improving the energy density of the battery unit.
Provided in the present application are a battery cell, a battery and an electric device. The battery cell comprises a casing and a protective member, wherein the casing comprises a first wall portion, the first wall portion having a first surface, the first surface being provided with pressure relief grooves, and the first wall portion being configured to be capable of splitting along the pressure relief grooves when the battery cell undergoes pressure relief. The protective member is arranged on the first surface, and covers the pressure relief grooves. In the direction of thickness of the first wall portion, the protective member and openings of the pressure relief grooves are spaced apart from each other. The protective member is provided on the first wall portion of the battery cell. The protective member can resist external force interference and protect the pressure relief grooves, and can also limit the deformation of the first wall portion and reduce the risk of the first wall portion splitting in advance along the pressure relief grooves due to the pressure relief grooves suffering from a change of pressure inside the battery cell. By means of spacing the protective member apart from the openings of the pressure relief grooves, when the battery cell undergoes pressure relief, the protective member is not prone to preventing the first wall portion from splitting along the pressure relief grooves, such that when the battery cell undergoes pressure relief, the pressure relief grooves can quickly split to relieve pressure, thereby facilitating an improvement in the reliability of the battery cell.
A battery cell (20), a battery (100), and an electrical device. The battery cell (20) comprises a casing, an electrode assembly (23), and a venting assembly (90). The casing has a wall portion and an accommodating cavity (221). The venting assembly (90) is arranged on the wall portion. The electrode assembly (23) comprises a negative electrode sheet. The negative electrode sheet comprises a negative electrode current collector and a carbon-containing coating arranged on one side surface of the negative electrode current collector. The thickness of the carbon-containing coating is: 1 μm≤L≤15 μm. By equipping the battery cell with the venting assembly (90) having a venting function, the conflict between the high-performance requirement for the battery cell (20) and the excessive gas generation can be balanced, and the impact of external moisture ingress on the battery cell (20) in a venting process is reduced.
Disclosed in the present application are a separator and a preparation method therefor, a battery, and an electric device. The separator comprises a substrate and a coating, wherein the coating is formed on at least one side of the substrate, and comprises acrylic ester polymer particles, the acrylic polymer ester particles having an AFM adhesive force of 2-3 nN.
Provided in the present application are a calibration member, and a method for using the calibration member to calibrate a detection system. The calibration member comprises: a base body, the base body comprising a side surface; and at least one reference portion, the at least one reference portion being located on the side surface of the base body, wherein the at least one reference portion has at least two of the following: at least one first shape feature perpendicular to the side surface; at least one second shape feature parallel to the side surface; and at least one color feature, the at least one first shape feature, the at least one second shape feature and the at least one color feature being used for the calibration of the detection system. The technical solution of the embodiments of the present application can efficiently determine whether the detection system has a fault, thereby finding and solving problems in a timely manner to ensure the normal operation of the system.
The present application provides a battery cell, a battery, and an electrical device. The battery cell comprises a casing, an electrode assembly, a first electrode terminal, a first insulating member, and a connecting member. The casing has a wall portion, and the electrode assembly is accommodated within the casing. The electrode assembly has a first electrode lead-out portion. The first electrode terminal is arranged on the wall portion, and the first electrode terminal is electrically connected to the first electrode lead-out portion. The first insulating member is configured to separate the first electrode terminal and the wall portion. The connecting member is electrically connected to the first electrode terminal and the casing, and the minimum current-carrying area of the connecting member is smaller than the minimum current-carrying area of the first electrode lead-out portion. The first electrode terminal is electrically connected to the casing by means of the connecting member, so that the casing can output electric energy of the electrode assembly. A battery management system can be connected to the casing of the battery cell, thereby achieving monitoring of the battery cell, and greatly reducing wiring difficulty. When a short circuit occurs in the battery cell, the connecting member can automatically fuse, so that the electrode assembly is protected, thereby facilitating improvement of the reliability of the battery cell.
A positive electrode active material, a secondary battery and an electric device. The positive electrode active material comprises: nickel, the molar proportion of which relative to the total amount of the metallic elements of nickel, cobalt and manganese is 55% or higher; cobalt, the molar proportion of which relative to the total amount of the metallic elements of nickel, cobalt and manganese is 20% or lower; a first modifying element Zr; a second modifying element Al; a third modifying element B; and a fourth modifying element, which is at least one of Nb, Mo and W. The positive electrode active material has good performance, and a battery prepared therefrom can have both a good energy density and good cycle performance.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/485 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
18.
POSITIVE ELECTRODE ACTIVE MATERIAL, SECONDARY BATTERY, AND ELECTRICAL DEVICE
A positive electrode active material, a secondary battery, and an electrical device. The positive electrode active material comprises: elemental nickel, the molar ratio of the elemental nickel in the total amount of nickel, cobalt, and manganese metal elements being 55% or higher; elemental cobalt, the molar ratio of the elemental cobalt in the total amount of the nickel, cobalt, and manganese metal elements being 20% or lower; a first modifying element Zr; a second modifying element Al; a third modifying element B; and a fourth modifying element, which is at least one of Nb, Mo, and W. The positive electrode active material has excellent performance, and batteries prepared therefrom exhibit both good energy density and cycling performance.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
The present application provides a battery cell, a battery, and an electrical device. The battery cell comprises a casing, an electrode assembly, a first electrode terminal, and a connecting member; the casing is provided with a wall portion; the electrode assembly is accommodated in the casing, and the electrode assembly is provided with a first tab; the first electrode terminal comprises a terminal body, an insulator and a connector, the terminal body is electrically connected to the first tab, the connector is connected to the wall portion, the terminal body is at least partially located between the wall portion and the connector, and the insulator is at least partially located between the terminal body and the connector; the connecting member is connected to the connector and the terminal body, so that the terminal body is electrically connected to the wall portion, and the connecting member is configured to be capable of performing fuse protection on the electrode assembly. According to the battery cell, the terminal body is connected to the connector by arranging the connecting member, so that the casing can output the electric energy of the electrode assembly, a battery management system can be connected to the casing of the battery cell, and the wiring difficulty is reduced. When the battery cell is short-circuited, the connecting member can be automatically fused, thereby improving the reliability of the battery cell.
A battery (4), a battery pack (100), an electric device, and an energy storage device, relating to the technical field of batteries. The battery (4) comprises a housing (10), a top cover assembly (20), and an electrode assembly (30). The housing (10) defines an accommodating space and has an opening on one side. The top cover assembly (20) is arranged on the housing (10) and seals the opening. The top cover assembly (20) comprises a top cover body (21). A snap-fit step (211) is provided on the bottom surface of the top cover body (21) facing away from the top surface of the top cover body (21) in a first direction (X). The top cover body (21) matches the edge of the opening of the housing (10) by means of the snap-fit step (211) so as to seal the opening of the housing (10). The electrode assembly (30) is accommodated in the accommodating space. The top cover body (21) matches the edge of the opening of the housing (10) by means of the snap-fit step (211), so that if there is a gap between the side surfaces of the top cover body (21) and the side walls of the housing (10), gas escaping from the gap between the side surfaces of the top cover body (21) and the side walls of the housing (10) in the first direction (X) is blocked by the snap-fit step (211) to a certain extent, thereby facilitating reduction of gas escape, and better sealing the opening of the housing (10).
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
H01M 10/04 - Construction or manufacture in general
H01M 50/15 - Lids or covers characterised by their shape for prismatic or rectangular cells
G01L 7/04 - Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges in the form of flexible, deformable tubes, e.g. Bourdon gauges
21.
HOUSING STRUCTURE OF POWER DISTRIBUTION UNIT, POWER DISTRIBUTION UNIT, BATTERY, AND ELECTRICAL DEVICE
Disclosed in the present application are a housing structure (100) of a power distribution unit, a power distribution unit (200), a battery (300), and an electrical device (400). The housing structure (100) of the power distribution unit comprises: an insulating housing (110), in which an inner cavity for mounting an electrical component is formed, the insulating housing (110) being provided with a mounting side wall (111); a connector (120), which is mounted on the outer side of the mounting side wall (111) facing away from the inner cavity, the connector (120) being provided with a connection terminal (121) and a shielding layer (122), the shielding layer (122) surrounding the connection terminal (121), and the connection terminal (121) extending into the inner cavity and being electrically connected to the electrical component; a metal plate (130), which is mounted on the outer side of the mounting side wall (111) facing away from the inner cavity, the metal plate (130) being located between the connector (120) and the mounting side wall (111), the metal plate (130) being provided with a mounting through hole (131), the connection terminal (121) passing through the mounting through hole (131), and the shielding layer (122) being electrically connected to the metal plate (130); and a grounding portion (140), a first end (141) of the grounding portion being electrically connected to the metal plate (130), and a second end (142) of the grounding portion being grounded. The present technical solution aims at solving the problem of low assembly efficiency of power distribution units due to complex overall design structures of power distribution units in the related technologies.
H01M 50/204 - Racks, modules or packs for multiple batteries or multiple cells
B60R 16/033 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided forArrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for supply of electrical power to vehicle subsystems characterised by the use of electrical cells or batteries
H02B 1/46 - BoxesParts thereof or accessories therefor
The present disclosure provides a battery pack, an electric device, and an energy storage device. The battery pack comprises a case and a first battery cell; an accommodating space is formed in the case; the first battery cell is located in the accommodating space; a pressure relief port for pressure relief is formed on at least one side of the first battery cell; an exhaust channel and an exhaust hole are provided on at least one side wall of the case; the exhaust hole is located on the side of the side wall facing the accommodating space; the exhaust channel is communicated with the accommodating space by means of the exhaust hole; and the side of the first battery cell provided with the pressure relief port and the side wall of the case provided with the exhaust hole are close to each other and oppositely arranged.
Disclosed in the present application are a composite porous membrane, a preparation method therefor, a battery and an electrical device. The composite porous membrane comprises an organic polymer substrate and an inorganic electrolyte, the inorganic electrolyte being dispersed in the organic polymer substrate. A plurality of holes of different diameters are formed in the composite porous membrane, the ionic conductivity of the composite porous membrane being 1*10-4S/cm-5*10-4 S/cm. Thus, the organic polymer substrate, the inorganic electrolyte and the holes in the composite porous membrane can all transport active metal ions, which increases transport paths of the active metal ions, thereby increasing the transport rate of the active metal ions and accordingly improving the power performance of batteries.
A battery cell, a battery, an electrical apparatus, and an energy storage apparatus. The battery cell comprises: an electrode assembly, which comprises at least two layers of stacked electrode sheets; a casing, an accommodating space being formed in the interior of the casing, the electrode assembly being located in the accommodating space, the casing comprising a first side wall and a second side wall, the first side wall being located on one side of the electrode assembly in the layer thickness direction, the plane on which the first side wall is located intersecting the plane on which the second side wall is located, and the first side wall being connected to the second side wall by means of a transition portion; and an elastic pad, which is located between the electrode assembly and the first side wall. The elastic pad is arranged between the electrode assembly and the first side wall, the electrode assembly can avoid the transition portion during expansion of the electrode assembly, and the elastic pad can also absorb a compressive force during the expansion of the electrode assembly. As a result, the risk of active material detachment caused by mutual compression and abrasion between the electrode assembly and the transition portion of the casing is more effectively reduced, thereby mitigating the phenomenon of lithium plating and prolonging the service life of a battery.
H01M 50/471 - Spacing elements inside cells other than separators, membranes or diaphragmsManufacturing processes thereof
H01M 50/474 - Spacing elements inside cells other than separators, membranes or diaphragmsManufacturing processes thereof characterised by their position inside the cells
H01M 10/04 - Construction or manufacture in general
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
The present application relates to the technical field of batteries, and provides a battery module, a battery, and an electric device. The battery module comprises battery cells, end plates, and side plates. Each end plate comprises an end plate body and an insertion structure, the end plate body defines a first surface, and the first surface extends in the length direction and the width direction of the end plate; the insertion structure is formed on the first surface, insertion grooves are respectively formed in the two ends of the insertion structure in the length direction, and the insertion grooves extend in the width direction; and each side plate comprises a bent part, and the bent part is inserted into the corresponding insertion groove.
H01M 50/244 - Secondary casingsRacksSuspension devicesCarrying devicesHolders characterised by their mounting method
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
H01M 50/258 - Modular batteriesCasings provided with means for assembling
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
26.
POSITIVE ELECTRODE SHEET AND MANUFACTURING METHOD THEREFOR, SECONDARY BATTERY, AND ELECTRICAL DEVICE
The present application provides a positive electrode sheet and a manufacturing method therefor, a secondary battery, and an electrical device. The positive electrode sheet of the present application has high compaction density.
H01M 4/136 - Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/1397 - Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
Disclosed are a battery and an electric device. The battery comprises an electrolyte solution and a negative electrode sheet, the electrolyte solution comprises sodium ions, M ions, and an ether solvent, the volume proportion of the ether solvent in the electrolyte solution is greater than or equal to 50%, and M is a metal element, and comprises one or more of potassium, lead, and mercury. The negative electrode sheet comprises flowable metallic compositions when the battery is in a fully charged state, and the metallic compositions comprise a sodium element and the M element.
A battery, a battery safety system, and an electric device. The battery comprises a case, battery cells and at least one processing mechanism, wherein an exhaust channel is formed in the case, and the battery cells are accommodated in the case; the processing mechanism comprises a power source and an actuating mechanism; the power source is connected to the actuating mechanism, a treatment channel is formed in the actuating mechanism, the treatment channel is communicated with the exhaust channel, and the power source is used for driving the actuating mechanism to operate to treat fumes and gases flowing through the treatment channel.
The present application is suitable for the technical field of power batteries, and provides a box body (400), a battery (200) and an electrical device (100). The box body comprises: a lower box body (40), which comprises a box body steel layer and a box body aluminum layer; and a temperature control assembly (50), which is connected to the lower box body, the temperature control assembly comprising a temperature control aluminum layer, and the temperature control aluminum layer being welded to the box body aluminum layer. The box body of the present application enables the material of the side of the temperature control assembly connected to the lower box body to be same as the material of the side of the lower box body connected to the temperature control assembly, so that the temperature control assembly can be connected to the lower box body more stably, thus reducing the difficulty of connecting the temperature control assembly to the lower box body.
The present application provides a heating and standing workstation (1000), and a battery production line. The heating and standing workstation (1000) comprises a transmission device (100), a first transferring device (200), a first grabbing device (1100), a second grabbing device (1200), a heating device (300), and a standing device (400). The first grabbing device (1100) and the second grabbing device (1200) of the heating and standing workstation (1000) provided by an embodiment of the present application can both grab materials on the transmission device (100) and move the materials to a first heating chamber (310) and a second heating chamber (320) for heating, or move the materials to a first standing chamber (410) and a second standing chamber (420) for standing. By means of the synchronous grabbing operation of the first grabbing device (1100) and the second grabbing device (1200), the heating and standing workstation (1000) can enable the heating and standing takt time of the materials to be faster, and can effectively improve the production efficiency.
The present application discloses a battery and an electrical device. The battery comprises cells, a temperature sampling member, a circuit board, and an electrical connecting member; the temperature sampling member is used for collecting the temperature of the cells; the battery further comprises an electrical connecting member; the electrical connecting member is used for being electrically connected to the temperature sampling member and the circuit board; and the temperature sampling member and the circuit board are welded to the electrical connecting member, respectively. The production efficiency of the battery can be improved.
H01M 50/569 - Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
A hold-down bar (13), a battery (10), and an electric device. The hold-down bar (13) comprises: a hold-down bar body (131), in which a mounting groove (1311) is formed; and connectors (132), wherein two ends of the hold-down bar body (131) are respectively connected to the connectors (132), and each connector (132) comprises a main body section (1321) connected to the hold-down bar body (131) and an assembly section (1322) configured to be connected to a case (11) of the battery (10), at least part of the main body section (1321) being mounted in the mounting groove (1311).
A positive electrode material and a preparation method therefor, a positive electrode sheet, a secondary battery and an electric device. The positive electrode material comprises a conductive substrate material and an active material distributed on the conductive substrate material, wherein the active material comprises a nanoscale phosphate active material, and the conductive substrate material comprises doping-element-modified graphene; and based on the total weight of the positive electrode material, the weight content of the active material is 75-95%, and the weight content of the conductive substrate material is 5-25%. The positive electrode material is prepared by using the doping-element-modified graphene as a substrate material for loading nanoparticles of the phosphate active material; therefore, the agglomeration of the nanoscale phosphate positive electrode material can be reduced, the wettability of an electrolyte on the active material is improved, and the cycle performance of the positive electrode material is improved.
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
34.
SOLAR CELL AND PREPARATION METHOD THEREFOR, ELECTRICAL DEVICE, AND POWER GENERATION DEVICE
A solar cell and an electrical device. The solar cell comprises an active layer, and the active layer comprises a three-dimensional perovskite layer and a first carrier transport layer which are sequentially stacked. In the first carrier transport layer, two-dimensional perovskite is comprised on one side close to the three-dimensional perovskite layer. The solar cell has improved photovoltaic performance and thermal stability.
A cell insertion device. The cell insertion device comprises a control device, a feeding station, a transfer station and a transfer mechanism. The feeding station is used for storing a case to be detected. The transfer station is used for storing a case that has passed the detection. The transfer mechanism comprises a manipulator provided with a suction member and a detection mechanism arranged on the manipulator. The control device controls the suction member to suction a case on the feeding station and controls the detection mechanism to detect the state of the case on the suction member. The state of the case comprises a first state and a second state that are different. When the case is in the first state, the control device controls the manipulator to transfer the case to the transfer station.
B65G 47/91 - Devices for picking-up and depositing articles or materials incorporating pneumatic, e.g. suction, grippers
B65G 43/08 - Control devices operated by article or material being fed, conveyed, or discharged
B65G 47/248 - Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles by turning over or inverting them
H01M 10/04 - Construction or manufacture in general
A battery (10) and an electric device, which belong to the technical field of batteries. The battery (10) comprises: a case (11); a bottom protective plate (13), the bottom protective plate (13) and the case (11) defining an accommodating cavity; a plurality of battery cells (12), which are mounted in the accommodating cavity; and protective structures (14), wherein the protective structures (14) are mounted on an end beam (111) of the case and located between the end beam (111) and the bottom protective plate (13), and the minimum distance between each protective structure (14) and the bottom protective plate (13) is not greater than the minimum distance between each battery cell (12) and the bottom protective plate (13).
An electrode sheet, a battery cell comprising the electrode sheet, a battery, and an electrical device. The electrode sheet comprises a current collector and an active material layer provided on at least one surface of the current collector; per unit standard area, the mass of the current collector is a, the mass of the active material layer is b, and a and b satisfy: 0.02≤a/b≤0.3. The current collector has small internal resistance and light weight.
Embodiments of the present application provide a bridge frame apparatus for vehicle battery replacement, a vehicle battery replacement system, and a battery replacement method. The bridge frame apparatus for vehicle battery replacement comprises: a base (1), an upper surface thereof allowing a vehicle (100) to travel thereon, the upper surface of the base (1) being provided with a recess (11) extending in a first direction (x), and the first direction (x) being consistent with a width direction of the vehicle (100); and at least two bridge frame assemblies (2), which are arranged side by side in the recess (11) in a second direction (y), the second direction (y) being perpendicular to the first direction (x), and the bridge frame assemblies (2) each comprising a support plate (21). Each of the bridge frame assemblies (2) is selectably switched between a first position and a second position; in the first position, the support plate (21) covers a partial area of the recess (11) for the vehicle (100) to pass; and in the second position, the bridge frame assembly (2) is away in the first direction (x) from the area in which a battery (101) of the vehicle (100) is located.
B60L 53/80 - Exchanging energy storage elements, e.g. removable batteries
B60S 5/06 - Supplying batteries to, or removing batteries from, vehicles
39.
SOLID-STATE BATTERY MATERIAL, POSITIVE ELECTRODE ACTIVE MATERIAL LAYER, POSITIVE ELECTRODE FILM, SOLID-STATE ELECTROLYTE MEMBRANE, SOLID-STATE BATTERY, ELECTRIC DEVICE, AND APPLICATION
The present application relates to a solid-state battery material, a positive electrode active material layer, a positive electrode film, a solid-state electrolyte membrane, a solid-state battery, an electric device, and an application. The solid-state battery material comprises coated particles. Each coated particle comprises a particle body and an oxygen storage layer located on at least a portion of the surface of the particle body, and the oxygen storage layer comprises an oxygen storage material. The coated particles are at least one of coated positive electrode active particles and coated electrolyte particles.
A secondary battery and an electric apparatus. The secondary battery comprises a positive electrode sheet, wherein the positive electrode sheet comprises a current collector; the current collector comprises a substrate, and a lithium-supplementing agent thin film and a coating which are located on at least the same side of the substrate; the coating includes a reducing agent; when the lithium-supplementing agent thin film is located on at least one side of the substrate, the coating is located on the side that is adjacent to the lithium-supplementing agent thin film and is away from the substrate; and when the coating is located on at least one side of the substrate, the lithium-supplementing agent thin film is located on the side that is adjacent to the coating and is away from the substrate. The secondary battery has good cycle performance and long service life.
The present application discloses an edge detection method and apparatus for a battery insulation part, and a battery production line. In the edge detection method for a battery insulation part, the battery insulation part is used for wrapping at least the side face of a battery cell of a battery. The method comprises: irradiating an edge to be detected of the insulation part by means of at least two light source assemblies; imaging said edge by means of an imaging assembly which is arranged to face said edge, so as to obtain an edge image; and identifying the position of said edge from the edge image. The edge detection method in the present application can solve the problem of performing standardized, stable, and reliable edge detection on the battery insulation part, and by making said edge of the battery insulation part more clearly visible in the edge image, improve the accuracy of extracting said edge from the edge image.
A composite positive electrode material and a preparation method therefor, a positive electrode, a battery and an electric device. The composite positive electrode material comprises a core body and coating layer, wherein the core body contains a lithium-rich manganese-based positive electrode material; and at least part of the surface of the core body is coated with the coating layer, and the coating layer comprises a perovskite material and a fast ion conductor material.
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
Disclosed in the present application are a case, a battery and an electric device. The case comprises a steel frame and a panel assembly, wherein the steel frame creates an enclosure to form an accommodating cavity and a first opening communicating with the accommodating cavity; the panel assembly covers the first opening, and the panel assembly comprises a first steel-aluminum composite panel; and the first steel-aluminum composite panel comprises a first steel panel layer and a first aluminum panel layer, which are stacked, with the first steel panel layer being welded to the steel frame.
An electrode sheet, an electrode assembly, a battery cell and a manufacturing method therefor, a battery, and an electrical device, relating to the technical field of batteries. A protective layer is provided on at least an end surface of the electrode sheet, the protective layer comprises aluminum oxide or silicon oxide, and the minimum resistance R of the protective layer satisfies: R≥25Ω. The protective layer is dense, which is conducive to improving the reliability of the battery cell.
Disclosed are a battery (100), an electrical device, and a method for manufacturing a thermal management component, which relate to the technical field of batteries. The battery (100) comprises a battery cell assembly and a thermal management component (30), wherein the battery cell assembly comprises a plurality of battery cells (20); the thermal management component (30) comprises a first plate (301) and a second plate (302), which are stacked in a first direction; a flow channel for accommodating a heat exchange medium is formed between the first plate (301) and the second plate (302); in the first direction, the first plate (301) is located on the side of the second plate (302) that faces away from the battery cell assembly; and the first plate (301) comprises a first connecting layer (3011), a first intermediate layer (3013) and a first reinforcing layer (3012) which are stacked in sequence, wherein the first connecting layer (3011) is welded to the second plate (302), the first reinforcing layer (3012) is located on the side of the first connecting layer (3011) that faces away from the second plate (302), and the first intermediate layer (3013) is connected to the first reinforcing layer (3012) and the first connecting layer (3011), respectively. The battery (100) can improve the strength of the thermal management component (30) and reduce impact on the thermal management component (30) when being impacted or scratched.
A negative electrode sheet, a battery and an electric device. The negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer located on at least one side of the negative electrode current collector, wherein the negative electrode film layer comprises a first negative electrode film layer and a second negative electrode film layer, and the second negative electrode film layer is located between the first negative electrode film layer and the negative electrode current collector; the first negative electrode film layer comprises a first active material, the first active material comprising first artificial graphite; the second negative electrode film layer comprises a second active material, the second active material comprising natural graphite and second artificial graphite; and the Dv50 of the first artificial graphite is D1, the Dv50 of the second artificial graphite is D2, and the Dv50 of natural graphite is D3, where D2>D3≥D1. The fast charging performance of a lithium-ion battery at a low temperature can be improved, and the energy density can be maintained; in addition, the pressure of excessive intercalation of lithium into graphite at the upper layer can be relieved, and the precipitation of lithium from the graphite at the upper layer can be inhibited.
The present application provides an electrolyte of a lithium metal battery, a lithium metal battery, a battery and an electric device. The electrolyte of a lithium metal battery comprises a lithium salt, a cyclic sulfone solvent and a diluent, wherein the diluent comprises at least one of a fluoroether compound and an aromatic compound. The present application can reduce gas production in lithium metal batteries, and improve the cycle performance of lithium metal batteries.
The present application relates to the technical field of battery manufacturing, and provides a battery material strip laminating apparatus and a battery manufacturing system. The battery material strip laminating apparatus comprises: a frame; a flattening roller, the flattening roller being rotatably arranged on the frame and being used for flattening a first material strip, a first group of helical recesses and a second group of helical recesses being provided on a circumferential side surface of the flattening roller, and the first group of helical recesses and the second group of helical recesses rotating and extending from the middle of the flattening roller toward the two ends of the flattening roller in opposite helical directions, respectively; and a laminating roller set, the laminating roller set being rotatably arranged on the frame and being configured to perform roller lamination on a second material strip and the flattened first material strip.
The present application relates to the technical field of batteries, and provides a battery and an electric device. The battery comprises a plurality of battery cells and liquid cooling structures; the battery cells are arranged at intervals; each liquid cooling structure comprises a liquid cooling main body part and a gel blocking strip connected to the liquid cooling main body part; the liquid cooling main body part is located between two adjacent battery cells; and the liquid cooling main body part, the two adjacent battery cells and the gel blocking strip define a gap for gel filling. According to the battery provided in the present application, the gel blocking strip is arranged on the liquid cooling main body part of each liquid cooling structure, so that the gel blocking strip can be connected to the liquid cooling main body part in advance; in this way, during the assembly of the liquid cooling structure and the battery cells, the working procedure of additionally mounting the gel blocking strip can be omitted, thereby improving the battery production and manufacturing efficiency to a certain extent.
A battery cell (20), a battery, and an electrical device. The battery cell (20) comprises a casing (21), an electrode terminal (22), and an electrode assembly (23), wherein the electrode terminal (22) is arranged on the casing (21) and is insulated from the casing (21); and the electrode assembly (23) is accommodated in the casing (21). The electrode assembly (23) comprises a first tab (232) and a second tab (233), the polarity of the first tab (232) being opposite to the polarity of the second tab (233), the first tab (232) being electrically connected to the electrode terminal (22), and the second tab (233) being electrically connected to the casing (21). The battery cell (20) eliminates the need to provide additional insulating components between the electrode assembly (23) and the casing (21), and allows the provision of only one electrode terminal (22), such that the number of electrode terminals (22) is reduced, and the number of insulating and sealing components arranged between the electrode terminal (22) and the casing (21) is also reduced, thereby effectively reducing the number of components of the battery cell (20), effectively reducing the size and weight of the battery cell (20), and thus effectively improving the energy density of the battery cell (20).
The present application discloses a battery and an electric device. The battery comprises battery cells and a case, and the battery cells are accommodated in the case. One side of each battery cell in a first direction is provided with a pressure relief mechanism. The case comprises a first case wall, the pressure relief mechanisms face the first case wall in the first direction, and recess portions are provided on the side of the first case wall facing the pressure relief mechanisms. In the first direction, the recess portions at least partially overlap the pressure relief mechanisms. When thermal runaway occurs in a battery cell, the pressure relief mechanism is actuated to release a substance from the battery cell, thereby reducing the risk of explosion of the battery cell. The recess portions can provide clearances for the pressure relief mechanisms when the pressure relief mechanisms are actuated, thereby reducing interference with the pressure relief mechanisms from the first case wall, increasing the pressure relief rate, and improving the reliability of the battery.
The present disclosure belongs to the technical field of batteries. Provided in the embodiments of the present disclosure are a battery, a battery pack and an electrical apparatus. The battery comprises a temperature adjustment container and battery cells. The temperature adjustment container has a temperature adjustment chamber, and an inlet and an outlet which are respectively communicated with the temperature adjustment chamber, a weakened area being formed on the chamber wall of the temperature adjustment chamber. The battery cells are arranged on one side or two opposite sides of the temperature adjustment container in a preset direction, the preset direction intersecting the surfaces having the largest areas of the battery cells. When thermal runaway of the battery cells occurs, the pressure bearing capacity of the weakened area is smaller than the pressure bearing capacity of other areas except the weakened area of the chamber wall of the temperature adjustment chamber, such that fluid in the temperature adjustment chamber can flow out from a position corresponding to the weakened area. When thermal runaway occurs, the pressure of the temperature adjustment chamber is increased to open the weakened area, so as to cool battery cells undergoing thermal runaway rapidly, thus inhibiting thermal runaway of battery packs.
A grabbing device and a cell production line. The grabbing device comprises a frame, a first clamping assembly, a first drive assembly, a second clamping assembly and a second drive assembly; the first clamping assembly comprises a first clamping member and a second clamping member which are oppositely arranged in a first direction; the first drive assembly is installed on the frame and used for driving the first clamping member to move in the first direction; the second clamping assembly comprises a third clamping member and a fourth clamping member which are oppositely arranged in a second direction; and the second drive assembly is installed on the frame and used for driving the third clamping member and the fourth clamping member to move in the second direction. The grabbing device can limit and grab multiple cells having different sizes in first directions and second directions, is thus highly adaptable, such that cell replacement processes do not need disassembling and changing grabbing devices, thus improving the production efficiency.
A battery (4) and a manufacturing method therefor, a top cover assembly (20), a battery pack, an electric device and an energy storage device. The battery (4) comprises: a case (10), which defines an accommodation space and is provided with an opening; a top cover assembly (20), which is arranged on the case (10), seals the opening, and comprises a top cover body (21), and a first connector (22) and a second connector (23), which can conduct electricity, wherein the first connector (22) comprises a first connection portion (221) and a first exposed portion (222) connected to the first connection portion (221), the second connector (23) comprises a second connection portion (231) and a second exposed portion (232) connected to the second connection portion (231), the first connection portion (221) and the second connection portion (231) each comprising a connection surface extending in a first direction, the first exposed portion (222) and the second exposed portion (232) being exposed outside the case (10); and an electrode assembly (30), which is accommodated in the accommodation space and comprises a positive tab (31) and a negative tab (32), which extend in the first direction, a first connection surface (221a) of the first connection portion (221) being in surface connection with the positive tab (31) or the negative tab (32), and a second connection surface (231a) of the second connection portion (231) being in surface connection with the positive tab (31) or the negative tab (32).
The present application provides a perovskite solar cell, a preparation method, a photovoltaic system, a power generation device, and an electric device. The perovskite solar cell comprises a first electrode, a charge extraction layer, a first passivation layer, a perovskite layer, and a second electrode which are sequentially stacked. The material of the charge extraction layer comprises a nickel oxide, the material of the first passivation layer comprises a reducing agent, and the reduction potential of the reducing agent is less than that of Ni3+. In the perovskite solar cell, by means of introduction of the first passivation layer, nickel ions with a valence of +3 or higher in the charge extraction layer can be reduced, reducing the degradation of a perovskite material, improving the stability of the perovskite layer, thereby prolonging the service life of the perovskite solar cell.
A battery and an electric device. The battery comprises a case and a bottom protective plate, wherein the bottom protective plate is connected to the case, the bottom protective plate is of a multi-layer structure, and a buffer cavity is formed between the bottom protective plate and the case and/or between two adjacent layers of the bottom protective plate. The battery structure can effectively improve the reliability of the battery.
H01M 50/242 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
57.
BATTERY, PRESSURE CONTROL UNIT, BATTERY PACK, ELECTRICAL DEVICE AND ENERGY STORAGE DEVICE
A battery, a pressure control unit, a battery pack, an electrical device and an energy storage device. The battery comprises a case assembly, at least one battery cell and at least one pressure control unit. The battery cell is accommodated in the case assembly, the battery cell comprising electrode assemblies stacked in a first direction. The pressure control unit comprises a fluid pouch, an accommodating cavity being formed in the fluid pouch; a fluid medium is accommodated in the accommodating cavity, such that the fluid pouch can contract or expand through flow of the fluid medium, thereby applying acting force to the battery cell by means of fluid pressure generated by the fluid medium. The pressure control unit applies acting force to the battery cell at least in an expanded state of the battery cell, so as to control the surface stress of the expanded battery cell.
H01M 50/471 - Spacing elements inside cells other than separators, membranes or diaphragmsManufacturing processes thereof
H01M 50/242 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
The present disclosure relates to a battery cell, a battery, and an electrical device. The battery cell comprises: poles (5); an electrode assembly, the electrode assembly comprising a main body and tabs (1), each tab (1) being connected to a pole (5) by means of a welded connection portion (6), and the tab (1) being provided with a fuse portion (13) for overcurrent protection; and an insulating protective layer (7), at least covering the welded connection portion (6) and the fuse portion (13). The insulating protective layer (7) covers the welded connection portion (6), so as to prevent welding slag of the welded connection portion (6) from falling off, thereby helping to prevent the welding slag from falling into a battery cell (2) and causing wear or short circuiting of components of the battery cell (2). The insulating protective layer (7) helps to maintain the tabs (1) in the orientation the tabs (1) are in before a break occurs, and helps to prevent a broken tab (1) from coming into contact with the components of the battery cell (2) and forming a short circuit and damaging the battery cell (2).
A film-applying device and a film-applying method. The film-applying device (100) is used for applying a film onto a target object, and comprises a frame (10), a film supply mechanism (20), a film-applying mechanism (30) and a control mechanism, wherein the frame comprises a first guide rail (11) extending in a first direction that is parallel to a surface to be film-applied of the target object; the film supply mechanism is configured to receive a film roll (200) and provide a conveying path along which a film tape released from the film roll is conveyed; the film-applying mechanism is movably connected to the first guide rail, and is configured to pull the leading end of the film tape, which is conveyed along the conveying path, to a film-applying starting position, move along the first guide rail to attach the film tape to the surface to be film-applied of the target object in the first direction, and cut off the film tape at a preset position of the film tape; and the control mechanism is configured to at least control the film-applying mechanism to operate so as to apply the film to the target object.
B65B 33/02 - Packaging small articles, e.g. spare parts for machines or engines
B65H 37/04 - Article or web delivery apparatus incorporating devices for performing specified auxiliary operations for securing together articles or webs, e.g. by adhesive, stitching, or stapling
60.
BATTERY, BATTERY PACK, ELECTRIC DEVICE AND BATTERY MODULE
A battery (100), a battery pack, an electric device and a battery module, which belong to the technical field of batteries. The battery (100) comprises a wrapping structure (1), a conductive terminal (2), and battery cells (3), wherein an accommodating space (11) is formed in the wrapping structure (1); a pressure relief port (12) in communication with the accommodating space (11) is formed in one side of the wrapping structure (1); and the remaining part of the wrapping structure (1) is of a sealed structure. The conductive terminal (2) is connected to the wrapping structure (1), and the conductive terminal (2) and the pressure relief port (12) are located on different sides of the wrapping structure (1). The battery cells (3) are located in the accommodating space (11), and tabs (31) of the battery cells (3) are electrically connected to the conductive terminal (2). By means of the wrapping structure (1), a thermal runaway gas in the accommodating space (11) is guided to be ejected through the pressure relief port (12), thereby achieving the directional ejection of the thermal runaway gas in the accommodating space (11) of the battery (100). The conductive terminal (2) and the pressure relief port (12) are located on different sides of the wrapping structure (1), such that the thermal runaway gas ejected through the pressure relief port (12) can be directed as far away as possible from the conductive terminal (2).
CHENGDU JINTANG TIMES NEW MATERIALS TECHNOLOGY CO., LTD (China)
Inventor
Wang, Jianqiu
Gao, Yuzhong
Wu, Xixiong
Li, Yu
Bie, Changfeng
Li, Zijun
Abstract
A lithium iron phosphate preparation method, a positive electrode active material, a positive electrode plate, a battery, and an electrical device. The lithium iron phosphate preparation method comprises: adding a first iron phosphate, a second iron phosphate, and a lithium source into a solvent, so as to obtain a slurry; and sintering the slurry, so as to obtain lithium iron phosphate. The specific surface area S1 of the first iron phosphate satisfies 7 m2/g ≤ S1 ≤ 9.5 m2/g, and the grain size D1 of the first iron phosphate satisfies 50 nm ≤ D1 ≤ 65 nm; the specific surface area S2 of the second iron phosphate satisfies 8.5 m2/g ≤ S2 ≤ 11.5 m2/g, and the grain size D2 of the second iron phosphate satisfies 30 nm ≤ D2 ≤ 50 nm; the specific surface area of the second iron phosphate is greater than the specific surface area of the first iron phosphate, and the grain size of the second iron phosphate is less than the grain size of the first iron phosphate. The technical solution of the present application can achieve lithium iron phosphate having high compaction density and high capacity.
C01B 25/45 - Phosphates containing plural metal, or metal and ammonium
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/136 - Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
62.
BATTERY CELL, BATTERY UNIT, BATTERY PACK, AND ELECTRIC DEVICE
A battery cell, a battery unit, a battery pack, and an electric device, relating to the technical field of batteries. The battery cell comprises a casing assembly (1), a bare cell (2), and poles (3). The bare cell (2) is arranged inside the casing assembly (1). The poles (3) are arranged on the casing assembly (1). The poles (3) are electrically connected to tabs (20) of the bare cell (2). Each pole (3) comprises a first connecting part (30) and a second connecting part (31) which are connected to each other. When projected along an arrangement direction of the bare cell (2) and the poles (3), the projection area of the first connecting part (30) and the projection area of the second connecting part (31) do not overlap. The first connecting part (30) is welded to the corresponding tab (20) of the bare cell (2). The second connecting part (31) is welded to a busbar. The technical solution can increase the space utilization rate of a battery cell and improves the energy density of the battery cell.
H01M 50/502 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing
H01M 50/503 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
H01M 50/559 - Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
H01M 10/0585 - Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
H01M 50/533 - Electrode connections inside a battery casing characterised by the shape of the leads or tabs
Disclosed in the present application are a vehicle frame and a vehicle. The vehicle frame is provided with a front end and a rear end which are opposite to each other, wherein the front end and the rear end are configured for the mounting of wheels, respectively, and at least one position of the vehicle frame between the front end and the rear end is bent downwards to form a recessed portion configured to accommodate at least part of a battery. The technical solution provided in the present application can improve the driving performance of the vehicle.
B62D 21/02 - Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
64.
CONTROL METHOD AND CONTROL SYSTEM FOR GAS GENERATION DURING BATTERY FORMATION, AND BATTERY FORMATION SYSTEM
The present application relates to the technical field of batteries, in particular to a control method and a control system for gas generation during battery formation, and a battery formation system. The control method comprises acquiring a first flow rate of a protective gas introduced during a formation process of a battery; on the basis of the first flow rate, providing the protective gas for the battery during the formation process, so as to dilute the concentration of combustible gases generated during the battery formation process to below a standard value. This dilutes gases generated during battery formation processes and reduces the concentration of combustible gases generated during said processes, improving battery reliability and stability at the formation stage.
A battery (100) and an electric device. The battery (100) comprises a case (10), a first battery module (20), a second battery module (30) and a protection member (40), wherein the case (10) is provided with an accommodating cavity (11); the first battery module (20) and the second battery module (30) are arranged spaced apart from each other in the accommodating cavity (11); the first battery module (20) comprises a first current confluence member (21), and a plurality of first battery cells (22) connected to one side of the first current confluence member (21); the second battery module (30) comprises a second current confluence member (31), and a plurality of second battery cells (32) connected to one side of the second current confluence member (31), the first current confluence member (21) being arranged facing the second current confluence member (31); and the protection member (40) is connected between the first current confluence member (21) and the second current confluence member (31). The battery (100) is connected to and protects, by means of the protection member (40), the first current confluence member (21) and the second current confluence member (31) which are opposite each other, such that the possibility of a short circuit occurring between the first current confluence member (21) and the second current confluence member (31) due to the damage to the first current confluence member and the second current confluence member caused by high-temperature flue gas and particulate matter ejected from the battery cells is reduced, thereby reducing the risk of high-voltage ignition of the battery (100).
Provided in the present application are a cylindrical battery cell, a cylindrical battery and an electric apparatus. The cylindrical battery cell comprises a positive electrode sheet, a negative electrode sheet and a separator, wherein the negative electrode sheet is a negative electrode current collector or a negative electrode current collector with a conductive layer on a surface thereof. The cylindrical battery cell uses a "no negative electrode" design plus a positive electrode sheet, that is, a negative electrode side is not provided with an active material, and is simply provided with a negative electrode current collector or a negative electrode current collector with a conductive layer on a surface thereof, such that there is no hard expansion caused by volume expansion of a negative electrode active material in a negative electrode film layer, and thus the hard expansion on the negative electrode side during a charging process is effectively controlled, thereby effectively reducing the risk of breakage of an electrode sheet and the risk of collapse of a central hole caused by the hard expansion of the electrode sheet.
A separator and a preparation method therefor, a battery, and an electric device, relating to the field of batteries. The separator comprises a polymer-based film, the polymer-based film has a three-dimensional network pore structure that is formed by interwoven polymer fibers and has pores communicated with each other, and the polymer fibers each contain a porphyrin compound and a polymer resin, wherein the porphyrin compound is dispersed in the polymer resin. The separator has better porosity and ionic conductivity, and during the battery cycling process, the porphyrin compound can coordinate with transition metal dissolved from a positive electrode active material to generate transition metal porphyrin, so that the dissolved transition metal is inhibited or prevented from migrating and depositing onto the surface of a negative electrode sheet to damage an SEI film, thereby improving the cycling capacity retention ratio and the rate capability of batteries.
A safety control system (0), comprising: a first device (1), a first dual safety circuit (2) connected to the first device (1), a first control input unit (3) connected to the first dual safety circuit (2), and a first safety input unit (4). The first dual safety circuit (2) comprises a first safety circuit (20) and a second safety circuit (21); the first safety circuit (20) is provided with a first monitoring unit (200); the second safety circuit (21) is provided with a second monitoring unit (210); the first monitoring unit (200) and the second monitoring unit (210) are configured to disconnect the first safety circuit (20) or the second safety circuit (21) from the first control input unit (3) and the first safety input unit (4) when it is determined that state data is abnormal; the first control input unit (3) is configured to execute a preset software emergency stop program of the first device (1) upon detecting a disconnection; and the first safety input unit (4) is configured to send an alarm signal to a safety control device (11) of the first device (1) upon detecting a disconnection.
A battery and an electric device. The battery comprises: a case, battery cells, and collection mechanisms. A first cavity and a second cavity are formed in the case; the case is provided with a pressure relief mechanism which enables the second cavity to be communicated with the outside; the battery cells are accommodated in the first cavity; the collection mechanisms are mounted in the second cavity; and the collection mechanisms are configured to: when smoke is generated due to thermal runaway of the battery cells, undergo expansion to collect the smoke and discharge at least part of air from the second cavity by means of the pressure relief mechanism.
H01M 50/291 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
H01M 50/293 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
H01M 50/30 - Arrangements for facilitating escape of gases
70.
POWDER-MATERIAL CONVEYING DEVICE AND AUTOMATIC BATCHING METHOD
A powder-material conveying device (1) and an automatic batching method. The powder-material conveying device (1) comprises feeding devices (10), and weighing containers (11), a temporary storage container (12) and a stirring apparatus (13), which are arranged in sequence from top to bottom in the gravity direction of a powder material. The feeding devices (10) are configured to unpack powder material bags and convey the powder material; the weighing containers (11) are configured to receive the powder material, weigh the powder material and convey the powder material into the temporary storage container (12); and the temporary storage container (12) is configured to mix the powder material and dispense the powder material into the stirring apparatus (13). By means of the powder-material conveying device (1), the manual unpacking of the powder material bags is not required, the unpacking efficiency is high, the labor cost is reduced, and the probability of direct contact between workers and the powder material is reduced; the weighing containers (11), the temporary storage container (12) and the stirring apparatus (13) are arranged in sequence from top to bottom, thereby facilitating the conveying of the powder material under the action of its own gravity, without using an additional auxiliary conveying method; thus, the conveying cost is low, the dimension of the powder-material conveying device (1) in the left-right direction or the front-back direction can be reduced, an occupied area is reduced, and the layout compactness of the powder-material conveying device (1) is improved.
A welding system, a battery production line and a welding method, the welding system being configured to weld an interconnection piece. The welding system comprises a frame (1), a welding assembly (2), a loading assembly (3) and a driving assembly (4). The frame (1) is provided with a plurality of loading stations (1a), wherein at least one of the loading stations is a welding station (1b), and at least one of the loading stations is a feeding station. The welding assembly (2) is arranged on the frame (1). The loading assembly (3) is movably arranged on the frame (1); each loading station (1a) is correspondingly provided with the loading assembly (3); each loading assembly (3) is configured to carry a bare cell (5); the welding assembly (2) is configured to weld the bare cell (5) carried by the loading assembly (3) at the welding station (1b); the driving assembly (4) can drive the loading assembly (3) to move in a first direction to pass through each loading station (1a) in sequence; and the loading assembly (3) moves in a second direction above or below the loading stations (1a) under the action of the driving assembly (4) so as to return to the corresponding loading station (1a). In this way, the size of the frame in a width direction is reduced, the footprint of the welding system is reduced, and the production efficiency of the battery is improved.
B23K 37/00 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
B23K 31/02 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups relating to soldering or welding
B23P 23/00 - Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
H01M 10/04 - Construction or manufacture in general
H01M 50/536 - Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
A battery cell, a battery and an electric device. The battery cell comprises a positive electrode sheet, wherein the positive electrode sheet comprises a positive electrode current collector and a positive electrode film layer arranged on at least one side of the positive electrode current collector; the positive electrode film layer contains a lithium nickel cobalt manganese oxide; and the lithium nickel cobalt manganese oxide comprises single crystal particles, and comprises Ni and Al, Ni accounting for 50-70% of the total number of transition metal atoms in the lithium nickel cobalt manganese oxide, and the mass content of Al relative to the total mass of the lithium nickel cobalt manganese oxide being 0.2-1.0 wt%. The energy density of the battery cell can be improved, and the internal resistance of the battery cell can be reduced.
H01M 4/131 - Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
H01M 50/204 - Racks, modules or packs for multiple batteries or multiple cells
The present application belongs to the technical field of battery manufacturing, and provides a pasting device, a battery cell pasting apparatus and a battery cell pasting method. The pasting device comprises a base, a positioning mechanism and a pasting mechanism. The base is configured to be used for placement of a component to be pasted. The positioning mechanism is configured to be used for fixing said component to a first preset position of the base. The pasting mechanism comprises a placement platform and a pasting assembly. The placement platform is configured to be used for placement of an adhesive. The pasting assembly is configured to be used for suctioning the adhesive, and moving from the placement platform to the first preset position so as to affix the adhesive to said component. The pasting device can fix said component by means of the positioning mechanism, and then the pasting assembly affixes the adhesive placed on the placement platform to said component located on the base, thereby automatically pasting said component. The present application exhibits a fast pasting speed and high pasting efficiency, thereby improving battery production efficiency. In addition, automated pasting reduces human operations, thereby saving labor costs.
B65H 37/04 - Article or web delivery apparatus incorporating devices for performing specified auxiliary operations for securing together articles or webs, e.g. by adhesive, stitching, or stapling
B65G 47/22 - Devices influencing the relative position or the attitude of articles during transit by conveyors
B65G 47/88 - Separating or stopping elements, e.g. fingers
The present application provides a battery and an electric device. The battery of the present application comprises a separator, a positive electrode and a negative electrode, wherein the separator comprises a polypropylene film; the heat-induced pore-closing temperature of the separator is T1, with the unit thereof being °C; the heat-induced pore-closing temperature of the polypropylene film is T2, with the unit thereof being °C; the intensity of the maximum exothermic peak in the differential scanning calorimetry curve of the positive electrode is P, with the unit thereof being mW/mg; when 0.15≤P≤0.6, T1=T2; and when 1.1≤P≤6, 0.7T2≤T1
H01M 50/489 - Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
A lithium-ion battery and an electric device. The lithium-ion battery comprises a positive electrode sheet, a negative electrode sheet, and an electrolyte, wherein the positive electrode sheet comprises a positive electrode active material, and a lithium-ion solid-phase diffusion characteristic time constant of the positive electrode active material is Tp; and the negative electrode sheet comprises a negative electrode active material, and a lithium-ion solid-phase diffusion characteristic time constant of the negative electrode active material is Tn, wherein Tp and Tn satisfy: 0.01≤Tp/Tn≤6. The lithium-ion solid-phase diffusion characteristic time constant T of the active material is defined as T＝(L/2)2/D, and the unit thereof is seconds, wherein L is the volume distribution particle size Dv50 of the active material, and the unit thereof is μm, and D is the lithium-ion solid-phase diffusion coefficient of the active material, and the unit thereof is μm2/s.
A flipping device and a battery production line. The flipping device (1000) comprises a mounting member (300), a first clamping assembly (100), a second clamping assembly (200) and an adjustment drive member (400), the adjustment drive member (400) being arranged on the mounting member (300); an output end of the adjustment drive member (400) is connected to a first connection member (110) and/or a second connection member (210); the adjustment drive member (400) is used for driving the first connection member (110) and/or the second connection member (210) to move in a first direction (X), so that a first clamping jaw (130) and a second clamping jaw (220) move towards or away from each other in the first direction (X). The flipping device (1000) provided by the present application can use the adjustment drive member (400) to adjust the relative position of the first connection member (110) and the second connection member (210), thus effectively improving the compatibility.
B65G 47/248 - Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles by turning over or inverting them
B65G 47/90 - Devices for picking-up and depositing articles or materials
H01M 10/04 - Construction or manufacture in general
77.
PEROVSKITE MATERIAL, SOLAR CELL, PREPARATION METHOD THEREFOR, ELECTRICAL DEVICE AND POWER GENERATION EQUIPMENT
xy1-x-y33, M+being a N-containing monovalent cation, FA+ being formamidinium, A being at least one of inorganic or organic monovalent cations, B being at least one inorganic divalent cation, and X being at least one monovalent anion. The embodiment of the present application dopes a formamidinium-containing perovskite material with a N-containing monovalent cation so as to improve same, thus improving the stability of corresponding perovskite solar cells.
A battery cell, a battery, and an electric device. The battery cell comprises an electrode assembly; the electrode assembly comprises a positive electrode sheet, a negative electrode sheet and a separator located between the positive electrode sheet and the negative electrode sheet; the negative electrode sheet comprises a negative electrode composite current collector and a negative electrode active layer located on at least one surface of the negative electrode composite current collector; and the negative electrode composite current collector comprises a polymer material supporting layer and a conductive layer located on the surface of the polymer material supporting layer.
A battery cell (10), a battery (100), and an electrical device. Connecting portions (42) are connected between tabs (32) and electrode terminals (11), so that during charging and discharging, current flows through the connecting portions (42) from the electrode terminals (11), and then is gradually transmitted to current collector bodies (31) from the tabs (32); or flows through the tabs (32) from the current collector bodies (31), and then is transmitted outwards from the connecting portions (42). Since the area of the minimum overcurrent cross section of the connecting portion (42) is less than the sum of the areas of the minimum overcurrent cross sections of the tabs (32) connected to the same connecting portion (42), that is, the minimum overcurrent area of the connecting portion (42) is less than the sum of the minimum overcurrent areas of the tabs (32), the overcurrent capability of the connecting portion (42) is lower than the sum of the overcurrent capabilities of the tabs (32). In this way, if an abnormal current occurs, such as an excessively high current, the part of the connecting portion (42) located between the tabs (32) and the electrode terminal (11) will fracture prior to the tabs (32), so that the current conduction between an adapter (4) and the tabs (32) is disconnected to halt the continuation of the abnormal current, and damage to an electrode assembly (3) due to the temperature rise at the tabs (32) is reduced, thereby improving the reliability of the battery cell (10).
A positive electrode sheet and a battery cell comprising the positive electrode sheet, a battery, and an electric device. The positive electrode sheet comprises a composite current collector and a positive electrode film layer provided on at least one surface of the composite current collector. The composite current collector comprises a polymer material base layer and a metal composite layer located on at least one surface of the polymer material base layer, and the active material of the positive electrode film layer comprises the Ni element. The metal composite layer comprises a metal matrix layer and a metal oxide layer which are stacked. The resistivity of the metal oxide layer is greater than that of the metal matrix layer. The positive electrode sheet can effectively alleviate DCR deterioration and reduce battery failure.
A solar cell and an electric device. The solar cell comprises an active layer, which comprises a light absorption layer, a hole transport layer and a passivation layer, wherein the hole transport layer comprises a transition metal oxide, and the passivation layer is located between the light absorption layer and the hole transport layer; and the passivation layer comprises an organic acid, and an acidic group in the organic acid is linked to a cyclic group in the organic acid. The solar cell has high photoelectric conversion efficiency and a long service life.
H10K 30/40 - Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising a p-i-n structure, e.g. having a perovskite absorber between p-type and n-type charge transport layers
The present application relates to a battery cell, a battery, and an electric device. The battery cell comprises: an electrolyte solution, the electrolyte solution containing an electrolyte salt, and the electrolyte salt comprising a salt capable of releasing free halogen ions during use of the battery cell; and a positive electrode sheet, the positive electrode sheet comprising a composite current collector and a positive electrode film layer provided on at least one side of the composite current collector, wherein the composite current collector comprises a supporting layer and a metal layer arranged on at least one side of the supporting layer, a protective layer is arranged on at least one side of the metal layer, and the protective layer comprises a metal oxide. The battery cell can achieve both good service life and power performance.
1211 is Li. The introduction of the preset lithium salt into the positive electrode sheet enables a battery cell using the positive electrode sheet to achieve good cycling performance.
A battery module (100), a battery, and an electrical device. The battery module (100) comprises: a battery cell group (1) and end plates (2). The battery cell group (1) comprises a plurality of battery cells (11) arranged in a first direction, and the end plates (2) are disposed at two opposite ends of the battery cell group (1) in the first direction. Each end plate (2) comprises an end plate main body (21) and an end plate frame (22) disposed on the end plate main body. The end plate main body (21) is an insulating member, the end plate frame (22) is a metal member, and the end plate frame (22) is located on the side of the end plate main body (21) facing away from the battery cell group (1).
H01M 50/24 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
H01M 50/242 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
H01M 50/289 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs
H01M 50/244 - Secondary casingsRacksSuspension devicesCarrying devicesHolders characterised by their mounting method
H01M 50/204 - Racks, modules or packs for multiple batteries or multiple cells
85.
BATTERY PACK, BATTERY MODULE, BATTERY UNIT, AND ELECTRICAL DEVICE
A battery pack, a battery module, a battery unit, and an electrical device, relating to the technical field of batteries. An accommodating space (11) is formed inside a case (1) of the battery pack, and at least one battery unit is located in the accommodating space (11). Each battery unit comprises a casing (21) and at least one pouch cell (22); a cell cavity (211) is formed inside the casing (21); the at least one pouch cell (22) is provided in the cell cavity (211); at least one side of the casing (21) is provided with an electrode assembly (23) for electrically connecting to other structures; at least one side of the casing (21) is provided with a pressure relief port (212) for pressure relief; and the electrode assembly (23) and the pressure relief port (212) are located on different sides of the casing. Thermal runaway gas in the cell cavity (211) is ejected from the pressure relief port (212) under the guidance of the casing (21), so that gas emitted during thermal runaway of the battery unit is ejected in a preset direction, thereby realizing directional ejection of the thermal runaway gas of the battery unit. The electrode assembly (23) and the pressure relief port (212) are located on different sides of the casing, so that the thermal runaway gas ejected from the pressure relief port can avoid the electrode assembly (23) as much as possible.
The present application relates to a battery cell, a battery, and an electric device. The battery cell comprises an electrolyte and a positive electrode sheet. The electrolyte contains an electrolyte salt, the electrolyte salt comprises a salt capable of releasing free halogen ions during use of the battery cell, and the concentration A of the electrolyte salt in the electrolyte is 0.5 mol/L to 2 mol/L; the positive electrode sheet comprises a composite current collector and a positive electrode film layer arranged on at least one side of the composite current collector, the composite current collector comprises a supporting layer and a metal layer arranged on at least one side of the supporting layer, and the thickness B of the metal layer is 500 nm to 4000 nm. The battery cell can ensure both high quality energy density and good cycle performance.
A battery cell (12), a battery (100) and an electric device, which belong to the technical field of batteries. The battery cell (12) comprises a casing (121), a first insulating member (125) and a second insulating member (126), wherein the casing (121) comprises a first wall (1213), a second wall (1214) and a side wall (1215); in the direction of the thickness of the first wall (1213), the second wall (1214) and the first wall (1213) are arranged opposite each other; the side wall (1215) is arranged around the first wall (1213) and the second wall (1214); and the first wall (1213) has first edges (12131) and second edges (12132), which are adjacent to one another. The first insulating member (125) covers an outer surface of the first wall (1213). The second insulating member (126) comprises a body portion (1260), first flange portions (1261) and second flange portions (1262), wherein the body portion (1260) covers an outer surface of the side wall (1215); the first flange portions (1261) and the second flange portions (1262) are arranged on the outer surface of the first wall (1213); the first flange portions (1261) are arranged along the first edges (12131); and the second flange portions (1262) are arranged along the second edges (12132). The first insulating member (125) covers at least part of each first flange portion (1261) and at least part of each second flange portion (1262). The first insulating member (125) covers at least part of each first flange portion (1261) and at least part of each second flange portion (1262) to improve the reliability of the battery cell (12).
The embodiments of the present disclosure belong to the technical field of batteries. Provided are a battery, a battery pack and an electrical apparatus. A wrapping structure forms an accommodation space, one side of the wrapping structure forming a pressure relief port communicated with the accommodation space, and the remaining portion of the wrapping structure being of a sealed structure. The wrapping structure comprises a casing and a top cover, the pressure relief port being formed in one side of the casing, the top cover and the casing defining the accommodation space, and the casing comprises a plurality of bending plates which bend in sequence. A conductive terminal is connected to the wrapping structure, the conductive terminal is installed on the top cover, and the conductive terminal and the pressure relief port are located on different sides of the wrapping structure. A battery cell is located in the accommodation space, and tabs of the battery cell are electrically connected to the conductive terminal. The bending plates at the two ends of the battery cell in the circumferential direction are connected, and the plurality of bending plates define the pressure relief port. The top cover and the pressure relief port are respectively located on the two opposite sides of the casing, and the top cover and the plurality of bending plates define the accommodation space. The battery of the embodiments of the present disclosure reduces the difficulty of installing the battery cell and the casing.
The disclosure belongs to the technical field of batteries. Provided in the embodiments of the present application are a battery pack and an electric device. Each battery unit is provided with a pressure relief port, and each battery unit comprises at least one battery cell. An accommodating space is formed in a box body; the battery unit is located in the accommodating space; the box body comprises a main box and a box cover; the accommodating space is formed in the main box; a first protruding portion is formed on the side of the main box facing the box cover; and the box cover covers the accommodating space of the main box, and the box cover is provided with a sealing portion, the sealing portion being in contact with the main box in a sealing manner in the arrangement direction of the main box and the box cover, and the sealing portion being located on the side of the first protruding portion away from the battery unit. Ejections caused by thermal runaway are shielded by means of the first protruding portion, such that the possibility of sealing failure between the sealing portion and the main box due to damage to the sealing portion is reduced.
Provided in the present disclosure are a hard carbon material and a preparation method therefor, and a secondary battery and an electric apparatus. An XRD diffraction pattern of the hard carbon material includes a first diffraction peak, the first diffraction peak being located at a position where 2θ=26±0.5°.
A positive electrode active material, a secondary battery, and an electrical device. The positive electrode active material comprises: a nickel element, the molar ratio of the nickel element in the total amount of nickel, cobalt and manganese metal elements being 80% or above; a cobalt element, the molar ratio of the cobalt element in the total amount of nickel, cobalt and manganese metal elements being 10% or below; a first modified element Zr; a second modified element Al; a third modified element B; and a fourth modified element: which is at least one of Nb, Mo, and W. The positive electrode active material has excellent performance, and batteries prepared therefrom can have good energy density and cycle performance.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/485 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
112221212111≤600; the electrolyte comprises lithium hexafluorophosphate and lithium bis(fluorosulfonyl)imide, and based on the total mass of the electrolyte, the ratio of the mass content of the lithium hexafluorophosphate to the mass content of the lithium bis(fluorosulfonyl)imide is greater than 1. The usage reliability of the battery cell can be improved.
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 10/0585 - Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
The present application belongs to the technical field of batteries. Disclosed are a sampling assembly, a battery and an electric device. The sampling assembly comprises a first flexible printed circuit, a second flexible printed circuit, a sampling unit and a conductive member. The first flexible printed circuit comprises a first insulating portion and a first conductor portion, the first conductor portion being arranged in the first insulating portion. The second flexible printed circuit comprises a second insulating portion and second conductor portions, the second conductor portions being arranged in the second insulating portion. The sampling unit is arranged on the second flexible printed circuit. The conductive member is configured to electrically connect to the first flexible printed circuit and the second flexible printed circuit. The conductive member comprises a body, first pins and second pins, wherein both the first pins and the second pins extend from the body, the first pins pierce the first flexible printed circuit and are electrically connected to the first conductor portion, and the second pins pierce the second flexible printed circuit and are electrically connected to the second conductor portions. The arrangement of the sampling assembly is beneficial for reducing the maintenance costs of the battery.
H01M 50/569 - Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
94.
PEROVSKITE BATTERY AND PREPARATION METHOD THEREFOR, PHOTOVOLTAIC MODULE, PHOTOVOLTAIC SYSTEM, ELECTRIC DEVICE, AND POWER GENERATING DEVICE
The present application relates to a perovskite battery and a preparation method therefor, a photovoltaic module, a photovoltaic system, an electric device, and a power generating device. The perovskite battery comprises a first electrode layer, a hole transport layer, a perovskite layer and a second electrode layer; the hole transport layer is arranged on one side of the first electrode layer, and the hole transport layer comprises nickel oxide and reducing cations; the perovskite layer is arranged on the side of the hole transport layer away from the first electrode layer; the second electrode layer is arranged on the side of the perovskite layer away from the hole transport layer. The perovskite layer in the perovskite battery of the present application has good long-term stability, and the perovskite battery has a long service life.
The present application provides a lithium iron phosphate positive electrode active material, a positive electrode plate, a lithium secondary battery, and an electrical device. The positive electrode active material comprises a lithium iron phosphate base material, the molar ratio of elemental Sn in the lithium iron phosphate base material being 5-15%, and the molar ratio of elemental Ni in the lithium iron phosphate base material being 20-30%. The powder resistivity of the positive electrode active material at 8 MPa is less than or equal to 30Ω·cm. The lithium iron phosphate positive electrode active material provided by the present application is characterized by high capacity per gram, and batteries prepared therefrom exhibit both good energy density and cycling performance.
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
96.
LAMINATED SOLAR CELL, PHOTOVOLTAIC ASSEMBLY, PHOTOVOLTAIC SYSTEM, ELECTRIC APPARATUS, AND POWER GENERATION APPARATUS
The present application relates to a laminated solar cell, a photovoltaic assembly, a photovoltaic system, an electric apparatus, and a power generation apparatus. The laminated solar cell comprises: a first electrode layer; a first light absorption layer, which is disposed on a side of the first electrode layer; a composite layer, which is disposed on the side of the first light absorption layer that faces away from the first electrode layer, wherein the composite layer comprises a main elemental metal and a doped elemental metal, and the main elemental metal comprises an element capable of generating two or more energy level defects within the bandgap of a semiconductor material; a second light absorption layer, wherein the second light absorption layer is disposed on the side of the composite layer that faces away from the first light absorption layer; and a second electrode layer, which is disposed on the side of the second light absorption layer that faces away from the composite layer. The laminated solar cell in the present application has high photoelectric conversion efficiency.
A battery cell (10). The battery cell (10) comprises a casing (1) and an electrode assembly (2); the casing (1) comprises a wall portion (11) and an end cover (12); the wall portion (11) defines an accommodating cavity having an opening in a first direction Z; the end cover (12) covers the opening; the end cover (12) comprises a main body (121) and an edge (122) surrounding the periphery of the main body (121); the edge (122) is connected to the wall portion (11) and protrudes, in the first direction Z, from the side of the main body (121) distant from the wall portion (11); the electrode assembly (2) is disposed in the accommodating cavity; a protruding portion (13) is provided on the main body (121); the protruding portion (13) is arranged on the side of the main body (121) distant from the wall portion (11); and in the first direction Z, the protruding distance of the protruding portion (13) relative to the main body (121) is greater than or equal to the protruding distance of the edge (122) relative to the main body (121).
H01M 50/15 - Lids or covers characterised by their shape for prismatic or rectangular cells
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
A battery and an electric device, relating to the technical field of batteries. The battery comprises a case, a battery cell and a treatment mechanism. The case forms an exhaust channel; the battery cell is accommodated in the case; the treatment mechanism forms a treatment channel and comprises at least one treatment module arranged at the treatment channel, the treatment channel is communicated with the exhaust channel and the external environment, and the treatment module is used for treating fumes flowing through the treatment channel.
H01M 50/291 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
H01M 50/293 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
H01M 50/30 - Arrangements for facilitating escape of gases
99.
BATTERY CELL AND PREPARATION METHOD, BATTERY, AND ELECTRICAL DEVICE
The present application relates to a battery cell and a preparation method, a battery, and an electrical device. An electrode assembly comprises an electrode sheet and a plurality of bosses; the electrode sheet is of a wound structure; and the plurality of bosses are at least partially arranged on the electrode sheet in the winding direction of the electrode sheet. The bosses in the present application are arranged to achieve a supporting effect between two adjacent layers of the wound structure, and facilitate an increase in a distance between two adjacent layers of the wound structure, thereby enabling two adjacent layers of the wound structure to be looser, and facilitating reduction of the occurrence of breakage of the electrode sheet.
H01M 10/04 - Construction or manufacture in general
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
A battery cell (100), comprising a casing (4); an electrode post (5); and a core (2), the core (2) being arranged in the casing (4); and an electrode assembly (1), the electrode assembly (1) being configured to connect the electrode post (5) and the core (2), wherein the electrode assembly (1) comprises a tab (10), the tab (10) being provided with a first connection portion (11) at one end and a second connection portion (12) at the other end, the first connection portion (11) being configured to be coupled to the core (2), and the second connection portion (12) being configured to be coupled to the electrode post (5). A fusing portion (13) is formed on the tab (10), and the fusing portion (13) is arranged between the first connection portion (11) and the second connection portion (12). The present application further relates to a battery and an electric device.
