BATTERY CELL, BATTERY, AND ELECTRICAL CONSUMING DEVICE

In some embodiments, the battery cell includes a shell, including an opening; an electrode unit, accommodated in the shell, the electrode unit including a main body portion and a tab portion protruding from the main body portion; a cap assembly, for connecting with the shell, and covering and closing the opening; and a first insulating member, accommodated in the shell and adapted to isolate at least part of the main body portion from the shell, the first insulating member including a first insulating plate, and the first insulating plate being disposed on a side of the main body portion facing the cap assembly and being attached to the main body portion. The first insulating member can insulate at least part of the main body portion from the shell.

End cover assembly, battery cell, degassing method, battery, and electric apparatus

This application relates to an end cover assembly, a battery cell, a degassing method, a battery, and an electric apparatus. The end cover assembly includes: an end cover plate provided with a degassing hole, where the degassing hole penetrates through the end cover plate; and a degassing apparatus mounted in the degassing hole, where the degassing apparatus includes a columnar portion, a first limiting portion, a second limiting portion, a first elastic member, and a second elastic member. The columnar portion penetrates through the degassing hole. The first limiting portion and the second limiting portion are respectively located on an outer side and an inner side of the end cover plate. The first elastic member is located between the first limiting portion and the end cover plate. The second elastic member is located between the second limiting portion and the end cover plate.

END COVER ASSEMBLY, SECONDARY BATTERY, BATTERY MODULE, APPRATUS, LIQUID-INJECTION METHOD AND DEVICE

The present application provides an end cover assembly, a secondary battery, a battery module, a device, a liquid-injection method and a device thereof. The end cover assembly for the secondary battery includes: an end cover, provided with a through hole for injecting electrolyte, and including a connecting portion; a sealing assembly, configured to seal the through hole; a locking-fixing member, configured to be movable relative to the connecting portion in a radial direction of the through hole, so as to realize switching between a locked state and an unlocked state of the locking-fixing member and the connecting portion. In the locked state, the locking-fixing member presses against the sealing assembly to restrict the end cover to be separated from the sealing assembly; in the unlocked state, the end cover and the sealing assembly are separable to allow electrolyte to be injected from the through hole. 1. An end cover assembly for a secondary battery , comprisingan end cover, provided with a through hole for injecting electrolyte therethrough and comprising a connecting portion;a sealing assembly, configured to seal the through hole;a locking-fixing member, configured to be movable relative to the connecting portion in a radial direction of the through hole, so as to realize switching between a locked state and an unlocked state of the locking-fixing member and the connecting portion, wherein in the locked state, the locking-fixing member presses against the sealing assembly to restrict the end cover from being separated from the sealing assembly; in the unlocked state, the end cover and the sealing assembly are separable to allow the electrolyte to be injected from the through hole.2. The end cover assembly according to claim 1 , wherein the locking-fixing member comprises an opening and an accommodating space communicating with each other claim 1 , and the connecting portion is configured to enter the accommodating space through the opening claim 1 , or the ...

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End cover assembly, secondary battery, battery module, apparatus, liquid-injection method and device

The present application provides an end cover assembly, a secondary battery, a battery module, a device, a liquid-injection method and a device thereof. The end cover assembly for the secondary battery includes: an end cover, provided with a through hole for injecting electrolyte, and including a connecting portion; a sealing assembly, configured to seal the through hole; a locking-fixing member, configured to be movable relative to the connecting portion in a radial direction of the through hole, so as to realize switching between a locked state and an unlocked state of the locking-fixing member and the connecting portion. In the locked state, the locking-fixing member presses against the sealing assembly to restrict the end cover to be separated from the sealing assembly; in the unlocked state, the end cover and the sealing assembly are separable to allow electrolyte to be injected from the through hole.

Electrode assembly, battery cell, battery, electrical apparatus, and manufacturing method and device

Embodiments provide an electrode assembly, a battery cell, a battery, an electrical apparatus, and a manufacturing method and device. In those embodiments, the electrode assembly includes: an electrode plate, including a main portion and at least one protruding portion. The main portion includes a metal substrate and an active material layer coated on a surface of the metal substrate. The protruding portion is connected to the metal substrate. The metal substrate protrudes along a length direction of the electrode assembly. Along a thickness direction of the electrode assembly, a size of at least a part of the protruding portion is greater than a size of the metal substrate. The electrode assembly according to the Embodiments aims to solve a technical problem of severe heat emission of a tab.

Battery, apparatus using battery, and manufacturing method and manufacturing device of battery

Embodiments of this application provide a battery, an apparatus using a battery, and a manufacturing method and a manufacturing device of battery. The battery includes a battery cell and a thermal management component. The battery cell has a side wall and a bottom wall that are connected to each other. The thermal management component is configured to accommodate fluid to regulate temperature of the battery cell, where an accommodating portion is provided on the thermal management component, and configured to accommodate the battery cell, and the accommodating portion is attached to the bottom wall and side wall of the battery cell, to enable heat transfer between the battery cell and the thermal management component. The battery cell in the battery provided in the embodiments of this application can dissipate heat efficiently.

Method and device for quantum key fusion-based virtual power plant security communication and medium

A method for quantum key fusion-based virtual power plant security communication includes: identity authentication, performing identity authentication between a client and a server in a virtual power plant based on a communication requirement to acquire a root key; key distribution: generating a key encryption key and a message authentication key based on the acquired root key and performing negotiation on a data encryption key to obtain the data encryption key; and data encryption: encrypting to-be-encrypted data using the data encryption key, and implementing communication of the data. During the identity authentication or the key distribution, negotiation on a quantum key is performed by a quantum key server, and the quantum key obtained by the negotiation is used for implementing the identity authentication or used as the data encryption key. A device for quantum key fusion-based virtual power plant security communication and a computer storage medium are provided.

END COVER ASSEMBLY, SECONDARY BATTERY, BATTERY MODULE, APPRATUS, LIQUID-INJECTION METHOD AND DEVICE

The present application provides an end cover assembly, a secondary battery, a battery module, a device, a liquid-injection method and a device thereof. The end cover assembly for the secondary battery includes: an end cover, provided with a through hole for injecting electrolyte, and including a connecting portion; a sealing assembly, configured to seal the through hole; a locking-fixing member, configured to be movable relative to the connecting portion in a radial direction of the through hole, so as to realize switching between a locked state and an unlocked state of the locking-fixing member and the connecting portion. In the locked state, the locking-fixing member presses against the sealing assembly to restrict the end cover to be separated from the sealing assembly; in the unlocked state, the end cover and the sealing assembly are separable to allow electrolyte to be injected from the through hole.

BATTERY CELL, BATTERY, POWER CONSUMING APPARATUS, AND METHOD AND APPARATUS FOR MANUFACTURING BATTERY CELL

Provided are a battery cell, a battery, a power consuming apparatus, and a method and apparatus for manufacturing the battery cell, relating to the technical field of batteries. The battery cell includes a housing, an electrode assembly, an end cap, an insulator and a thermally conductive member. The housing is provided with an opening. The electrode assembly is configured to be accommodated in the housing. The end cap is configured to cover the opening. The insulator is located on the side of the end cap facing the electrode assembly, and the insulator is configured to isolate the end cap from the electrode assembly. The thermally conductive member is embedded in the insulator, and the thermally conductive member is configured to be attached to the end cap. Heat generated by the electrode assembly may be transferred to the end cap through the thermally conductive member.

ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, ELECTRICAL APPARATUS, AND MANUFACTURING METHOD AND DEVICE

Embodiments provide an electrode assembly, a battery cell, a battery, an electrical apparatus, and a manufacturing method and device. In those embodiments, the electrode assembly includes: an electrode plate, including a main portion and at least one protruding portion. The main portion includes a metal substrate and an active material layer coated on a surface of the metal substrate. The protruding portion is connected to the metal substrate. The metal substrate protrudes along a length direction of the electrode assembly. Along a thickness direction of the electrode assembly, a size of at least a part of the protruding portion is greater than a size of the metal substrate. The electrode assembly according to the Embodiments aims to solve a technical problem of severe heat emission of a tab.

ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRICITY-CONSUMING DEVICE

The present application discloses an electrode assembly including: a first electrode sheet including an insulating substrate, an electricity-conducting layer arranged on a surface of the insulating substrate, and an active material layer coating on a surface of the electricity-conducting layer, in which the first electrode sheet is bent to form a multi-layer structure and includes a plurality of bending segments and a plurality of first layer-stacking segments arranged to be stacked, and each of the bending segments is configured to connect two adjacent first layer-stacking segments; a second electrode sheet, in which a polarity of the second electrode sheet is opposite to a polarity of the first electrode sheet, and the second electrode sheet includes a plurality of second layer-stacking segments, the plurality of second layer-stacking segments and the plurality of first layer-stacking segments are alternately arranged in a layer-stacking direction of the first layer-stacking segments.

Battery cell, manufacturing method and manufacturing system therefor, battery and electric device

Embodiments of the application provide a battery cell, a manufacturing method and a manufacturing system therefor, a battery and an electric device. The battery cell according to an embodiment of the application includes: a casing having an opening; an electrode assembly, accommodated in the casing and including a tab portion; an end cover assembly, including an end cover configured to cover the opening and an electrode terminal mounted on the end cover, the end cover being provided with a first through hole; and a current collecting member, configured to electrically connect the electrode terminal and the tab portion. According to the application, impurities attached to the electrode assembly can be reduced during assembly, thereby improving the safety performance of the battery cell.

METHOD AND DEVICE FOR QUANTUM KEY FUSION-BASED VIRTUAL POWER PLANT SECURITY COMMUNICATION AND MEDIUM

A method for quantum key fusion-based virtual power plant security communication includes: identity authentication, performing identity authentication between a client and a server in a virtual power plant based on a communication requirement to acquire a root key; key distribution: generating a key encryption key and a message authentication key based on the acquired root key and performing negotiation on a data encryption key to obtain the data encryption key; and data encryption: encrypting to-be-encrypted data using the data encryption key, and implementing communication of the data. During the identity authentication or the key distribution, negotiation on a quantum key is performed by a quantum key server, and the quantum key obtained by the negotiation is used for implementing the identity authentication or used as the data encryption key. A device for quantum key fusion-based virtual power plant security communication and a computer storage medium are provided. 1. A method for quantum key fusion-based virtual power plant security communication , comprising:identity authentication: performing identity authentication between a client and a server in a virtual power plant based on a communication requirement, to acquire a root key, wherein the server comprises a commercial virtual power plant, an electricity market service system or a technical virtual power plant, and the client comprises a distributed energy resource, a commercial virtual power plant or a technical virtual power plant;key distribution: generating a key encryption key and a message authentication key based on the acquired root key, and performing negotiation on a data encryption key to obtain the data encryption key; anddata encryption: encrypting to-be-encrypted data using the data encryption key, and implementing communication of the data,wherein during at least one of the identity authentication or the key distribution, negotiation on a quantum key is performed by a quantum key server, and ...

End cover assembly, battery cell, degassing method, battery, and electric apparatus

This application relates to an end cover assembly, a battery cell, a degassing method, a battery, and an electric apparatus. The end cover assembly includes: an end cover plate provided with a degassing hole, where the degassing hole penetrates through the end cover plate; and a degassing apparatus mounted in the degassing hole, where the degassing apparatus includes a columnar portion, a first limiting portion, a second limiting portion, a first elastic member, and a second elastic member. The columnar portion penetrates through the degassing hole. The first limiting portion and the second limiting portion are respectively located on an outer side and an inner side of the end cover plate. The first elastic member is located between the first limiting portion and the end cover plate. The second elastic member is located between the second limiting portion and the end cover plate.

Battery cell, battery, and power-consuming device

Battery cell, battery, electrical apparatus, and method and apparatus for preparing battery cell

Embodiments of the present disclosure provide a battery cell, a battery, a power consumption device, and a method and device for producing a battery cell so that the safety of a battery can be enhanced. A battery cell (20) includes a casing (210) configured to accommodate an electrode assembly (22); and a pressure relief mechanism (213) disposed on the casing (210) and the pressure relief mechanism (213) including: a pressure relief passage (2133); and a first pressure relief element (2131) and a second pressure relief element (2132) that are disposed on the pressure relief passage (2133) and close the pressure relief passage (2133) separately. In a venting direction of the pressure relief passage (2133), the second pressure relief element (2132) is disposed upstream of the first pressure relief element (2131) and communicated with an internal space of the casing (210), wherein the second pressure relief element (2132) has a rigidity of greater than or equal to 25 N/mm. With this solution, the second pressure relief element protects the first pressure relief element, and an initial opening pressure of the first pressure relief element may be designed to be relatively small to guarantee the safety performance of the battery cell.

End cover assembly, battery cell, battery, and electric device

An end cover assembly may include an end cover and an electrode terminal. The end cover may have an abutting surface. A terminal assembly may include the electrode terminal and a connector, where the connector may be configured to connect the electrode terminal and the end cover so as to fix the electrode terminal to the end cover, and the connector abuts against the abutting surface. The abutting surface may be provided with a concave portion recessed in a thickness direction of the end cover, and the concave portion may be configured to accommodate a part of the electrode terminal.

Electrode assembly, battery cell, battery, electric apparatus, and manufacturing method and device

Battery cell, battery and electric device

End cover assembly, secondary battery, battery module, device, liquid injection method and device

End cap assembly, battery cell, vent method, battery, and electrical device

Electrode assembly and manufacturing method therefor, battery cell, battery, and electric device

This application provides an electrode assembly and a manufacturing method thereof, a battery cell, a battery, and an electric apparatus. The electrode assembly includes a first electrode plate, and separators provided on two sides of the first electrode plate in a thickness direction of the electrode plate and stacked with the first electrode plate; where in an unfolded state of the electrode assembly, the separator has first edge portions each exceeding an end of the first electrode plate in a length direction of the separator, and the separator has second edge portions each exceeding an end of the first electrode plate in a height direction of the separator; and in the thickness direction of the electrode plate, the corresponding first edge portions on two sides of the first electrode plate are at least partly hot-melt connected to form first hot-melted segments, and the corresponding second edge portions on two sides of the first electrode plate are at least partly hot-melt connected to form second hot-melted segments. The technical solution in this application can enhance the electrochemical performance of batteries and improve the safety and reliability of batteries.

Battery cell, battery, and power consuming device

Battery cell, manufacturing method and apparatus thereof, battery and electrical apparatus

A battery cell includes an electrode assembly including a main body portion and a tab. The tab is connected with a side portion of the main body portion in a first direction. The battery cell further includes a protective frame, which is of an integrated structure and includes three segments of protective plates respectively used for protecting three side faces of the main body portion. The three segments of protective plates comprise a first plate, a second plate, and a third plate. The third plate is located between the first plate and the second plate, two ends of the third plate are respectively connected with a first end of the first plate and a first end of the second plate, and at least one of the first plate, the second plate, and the third plate is provided with an opening. The tab is led out from the opening.

End cap, battery cell, battery, and power consuming device

An end cap includes a first recess recessed from a side facing toward an electrode assembly of a battery cell and away from the electrode assembly, and a second recess recessed from a side facing away from the electrode assembly and toward the electrode assembly. A bottom wall of the second recess includes a first part and a second part surrounding the first part. The first part and a bottom wall of the first recess are opposite to each other in a thickness direction of the end cap. The end cap further includes a pressure relief portion formed between the first part and the bottom wall of the first recess, and configured to be actuated when an internal pressure of the battery cell reaches a threshold. A side of the second part facing away from the electrode assembly forms an avoidance space to avoid the pressure relief portion.

End cover, battery cell, battery, and power-consuming device

The present application discloses an end cap, a battery cell, a battery and a power consuming device. The end cap according to an embodiment of the present application includes: a first recess recessed from the side of the end cap facing toward an electrode assembly in a direction away from the electrode assembly; a second recess recessed from the side of the end cap facing away from the electrode assembly of the battery cell in a direction toward the electrode assembly, wherein a bottom wall of the second recess includes a first part and a second part surrounding an outer side of the first part, and the first part and a bottom wall of the first recess are arranged opposite to each other in a thickness direction of the end cap; and a pressure relief portion formed between the first part and the bottom wall of the first recess, wherein the pressure relief portion is configured to be actuated, when an internal pressure of the battery cell reaches a threshold, to relieve the internal pressure, and the side of the second part facing away from the electrode assembly forms an avoidance space to avoid the pressure relief portion when the pressure relief portion is actuated. In the present application, the safety of the battery cell can be improved.

Battery cell, battery, and electrical apparatus

Battery cell and manufacturing method and system therefor, battery, and electric device

Battery cell, fabrication method and fabrication system therefor, battery, and electrical apparatus

Embodiments of the application provide a battery cell, a manufacturing method and a manufacturing system therefor, a battery and an electric device. The battery cell according to an embodiment of the application includes: a casing having an opening; an electrode assembly, accommodated in the casing and including a tab portion; an end cover assembly, including an end cover configured to cover the opening and an electrode terminal mounted on the end cover, the end cover being provided with a first through hole; and a current collecting member, configured to electrically connect the electrode terminal and the tab portion, where the current collecting member includes a first connecting portion for connecting the tab portion, and projection of a connecting region of the first connecting portion and the tab portion in a thickness direction of the end cover at least partially overlaps with projection of the first through hole in the thickness direction. According to the application, impurities attached to the electrode assembly can be reduced during assembly, thereby improving the safety performance of the battery cell.

End cap assembly, battery cell, battery, and power consuming device

Embodiments of this application provide an end cover assembly, a battery cell, a battery, and an electric device, pertaining to the field of battery technologies. The end cover assembly includes an end cover and an electrode terminal. The end cover has an abutting surface. A terminal assembly includes the electrode terminal and a connecting member, where the connecting member is configured to connect the electrode terminal and the end cover so as to fix the electrode terminal to the end cover, and the connecting member abuts against the abutting surface. The abutting surface is provided with a concave portion recessed in a thickness direction of the end cover, and the concave portion is configured to accommodate a part of the electrode terminal. The concave portion can accommodate a part of the electrode terminal, so that this part of the electrode terminal sinks into the concave portion, reducing space occupied by the electrode terminal outside the battery cell and helping to increase energy density of the battery.

Electrode assembly and manufacturing method thereof, battery cell, battery, and electric apparatus

An electrode assembly includes a first electrode plate, and separators provided on two sides of the first electrode plate in a thickness direction of the first electrode plate and stacked with the first electrode plate. In an unfolded state of the electrode assembly, a separator has a first edge portion exceeding an end of the first electrode plate in a length direction of the separator, and a second edge portion exceeding an end of the first electrode plate in a height direction of the separator. In the thickness direction of the first electrode plate, the corresponding first edge portions on two sides of the first electrode plate are at least partly hot-melt connected to form a first hot-melted segment, and the corresponding second edge portions on two sides of the first electrode plate are at least partly hot-melt connected to form a second hot-melted segment.

End cover assembly, liquid injection method and device

Battery cell, manufacturing method and manufacturing system therefor, battery and electric device

Battery cell, battery, electrical device, and method and device for manufacturing battery cell

Battery cell, battery, and power-consuming device

Provided are a battery cell (100), a battery (10), and a power-consuming device. The battery cell (100) comprises: a housing (110), wherein the size of the housing (110) in the length direction is greater than each of the extension sizes of the housing (110) in the thickness direction and in the width direction, and the housing (110) comprises a first plate body (111) extending in the length direction and an accommodating space (112) having at least one end open; an electrode assembly (120), arranged in the accommodating space (112); and a cover body (130), covered on the opening; wherein the first plate body (111) is provided with a pressure relief mechanism (140), the pressure relief mechanism (140) is configured to be actuated, when the internal pressure or temperature of the housing (110) reaches a threshold, to release the internal pressure, and in the length direction, the extension size of the pressure relief mechanism (140) is greater than or equal to 1/4 of the extension size of the first plate body (111).

Battery cell, battery, and electric device

Embodiments of the present application provide a battery cell, a battery, and a power consumption apparatus, which could effectively improve performance of the battery without increasing the internal space of the battery. The battery cell (20) includes: an electrode assembly (21) including a first end face (211) and a second end face (212) opposite to each other, the first end face (211) being provided with tabs (212a, 212b); and a lithium replenishing apparatus (22) connected with the second end face (212).

Battery cell, battery and power consumption apparatus

Embodiments of the present application provide a battery cell, a battery, and a power consumption apparatus, which could effectively improve performance of the battery without increasing the internal space of the battery. The battery cell includes: an electrode assembly including a first end face and a second end face opposite to each other, the first end face being provided with tabs; and a lithium replenishing apparatus connected with the second end face.

Battery cell, battery and power consumption apparatus

Embodiments of the present application provide a battery cell, a battery, and a power consumption apparatus, which could effectively improve performance of the battery without increasing the internal space of the battery. The battery cell includes: at least two electrode assemblies, a surface of each electrode assembly of the at least two electrode assemblies including a curved part, and curved parts of two adjacent electrode assemblies of the at least two electrode assemblies forming an accommodating space; and a lithium replenishing apparatus, at least part of the lithium replenishing apparatus being disposed in the accommodating space.

Battery cell and manufacturing method and device therefor, battery, and electric device

Embodiments of the present application provide a battery cell and a manufacturing method and device therefor, a battery, and an electric device. A battery cell (100) comprises: an electrode assembly (1) comprising a main body part (11) and a tab (12), the tab (12) being connected to a side portion of the main body part (11) in a first direction (X); and a protective frame (2) having an integrated structure and comprising three sections of protective plates which are respectively used for protecting three side surfaces of the main body part (11), the three sections of protective plates comprising a first plate (21), a second plate (22), and a third plate (23), the third plate (23) being located between the first plate (21) and the second plate (22), two ends of the third plate (23) being respectively connected to a first end of the first plate (21) and a first end of the second plate (22), and at least one of the first plate (21), the second plate (22), and the third plate (23) being provided with an opening (231), wherein the tab (12) is led out from the opening (231).

Battery cell, battery, and electric device

Embodiments of the present application provide a battery cell, a battery, and an electric device. The performance of a battery can be effectively improved with relatively low process complexity. The battery cell comprises: at least two electrode assemblies (21); a lithium supplementing device (22), provided between two adjacent electrode assemblies (21) in the at least two electrode assemblies (21); a housing, used for accommodating the at least two electrode assemblies (21), the housing comprising a first wall, and a lithium supplementing electrode terminal (241) being provided on the first wall; and a connecting member (23), used for electrically connecting the lithium supplementing device (22) and the lithium supplementing electrode terminal (241).

Battery cell, battery, and electric device

Provided in the embodiments of the present application are a battery cell, a battery and an electric device, which can effectively improve the performance of a battery without increasing the internal space of the battery. The battery cell comprises: at least two electrode assemblies (21), the surface of each of the at least two electrode assemblies (21) comprising a curved portion (211), and the curved portions (211) of the two electrode assemblies (21), which are adjacent, in the at least two electrode assemblies (21) forming an accommodation space (2111); and a lithium replenishment device (22), at least part of which is arranged in the accommodation space (2111).

Battery cell, battery, power consumption device, and method and device for producing battery cell

A battery cell includes a casing configured to accommodate an electrode assembly, and a pressure relief mechanism disposed on the casing. The pressure relief mechanism includes a pressure relief passage, and a first pressure relief element and a second pressure relief element that are disposed on the pressure relief passage and close the pressure relief passage separately. In a venting direction of the pressure relief passage, the second pressure relief element is disposed upstream of the first pressure relief element and communicated with an internal space of the casing. The second pressure relief element has a rigidity of greater than or equal to 25 N/mm.

Battery cell, battery, electrical apparatus, and method and apparatus for preparing battery cell

Battery, device using battery, and method and device for preparing battery

Embodiments of this application provide a battery (1), an apparatus using a battery (1), and a preparation method and a preparation device of a battery (1). The battery (1) includes a battery cell (10), where the battery cell (10) has a side wall (11) and a bottom wall (12) that are connected to each other; and a thermal management component (20), configured to accommodate fluid to regulate temperature of the battery cell (10), where an accommodating portion (21) is provided on the thermal management component (20), the accommodating portion (21) is configured to accommodate the battery cell (10), and the accommodating portion (21) is attached to the bottom wall (12) and side wall (11) of the battery cell (10), to implement heat transfer between the battery cell (10) and the thermal management component (20). The battery cell (10) in the battery (1) provided in the embodiments of this application can dissipate heat in time, so that the battery (1) is not easily damaged by heat.

Battery cell, battery, power-consuming apparatus, and apparatus and method for manufacturing battery cell

Battery cell, battery and electrical apparatus

Embodiments of the present application provide a battery cell, a battery and an electrical apparatus, which can effectively improve the performance of batteries with low process complexity. The battery cell includes: at least two electrode assemblies; a lithium-supplementing apparatus arranged between two adjacent electrode assemblies in the at least two electrode assemblies; a shell configured to accommodate the at least two electrode assemblies, the shell including a first wall, and the first wall being provided with a lithium-supplementing electrode terminal; and a connecting element configured to electrically connect the lithium-supplementing apparatus with the lithium-supplementing electrode terminal.

Electrode assembly and manufacturing method therefor, battery cell, battery, and electric device

End cover assembly, secondary battery, battery module, appratus, liquid-injection method and device

The present application provides an end cover assembly, a secondary battery, a battery module, a device, a liquid-injection method and a device thereof. The end cover assembly for the secondary battery includes: an end cover, provided with a through hole for injecting electrolyte, and including a connecting portion; a sealing assembly, configured to seal the through hole; a locking-fixing member, configured to be movable relative to the connecting portion in a radial direction of the through hole, so as to realize switching between a locked state and an unlocked state of the locking-fixing member and the connecting portion. In the locked state, the locking-fixing member presses against the sealing assembly to restrict the end cover to be separated from the sealing assembly; in the unlocked state, the end cover and the sealing assembly are separable to allow electrolyte to be injected from the through hole.

Battery, apparatus using same, and manufacturing method and device for battery

Embodiments of this application provide a battery (1), an apparatus using a battery (1), and a preparation method and preparation device of battery. The battery (1) includes: a plurality of battery cells (10), where at least one of the battery cells (10) is provided with a pressure relief mechanism (14), and the pressure relief mechanism (14) is configured to actuate release of internal pressure of the battery cell (10) when the internal pressure or internal temperature of the battery cell (10) reaches a threshold; and a protective box (20), where the protective box (20) is configured to protect the plurality of battery cells (10), and the protective box (20) is provided with a guiding channel (40), where the guiding channel (40) is configured to guide emissions released from the pressure relief mechanism (14). The plurality of battery cells (10) include a first battery cell (101) and a second battery cell (102) that are arranged adjacently. The first battery cell (101) includes a pressure relief end at which the pressure relief mechanism (14) is provided, and the pressure relief end of the first battery cell (101) is staggered with one end of the second battery cell (102) that is close to the pressure relief end, in a direction leaving the guiding channel (40), so as to increase a volume of the guiding channel (40). The battery (1) provided in the embodiments of this application offers better safety performance.

End cover, battery cell, battery, and power-consuming device

Connection assembly, battery cell, battery, and electric device

Embodiments of the present application provide a connecting assembly, a battery cell, a battery, and a power consumption device. The connecting assembly is used for a battery cell. The connecting assembly includes: a connector, including a first connecting portion for connecting a tab of an electrode assembly, a second connecting portion for connecting an electrode terminal, and a third connecting portion for connecting the first connecting portion and the second connecting portion, where a fusing portion is formed between the first connecting portion and the third connecting portion, and the third connecting portion has a first surface facing the electrode assembly; a first insulator wrapping the fusing portion; and a second insulator covering at least a portion of the first surface, where the second insulator and the first insulator are integrally formed. The connecting assembly can improve safety of the battery cell.

Battery, apparatus using battery, and preparation method and preparation device of battery

A battery includes a protective box provided with a guiding channel and a plurality of battery cells in the protective box. The plurality of battery cells include a first battery cell and a second battery cell adjacent to each other. The first battery cell includes a pressure relief end provided with a pressure relief mechanism. The pressure relief mechanism is configured to actuate release of internal pressure of the first battery cell in response to the internal pressure or an internal temperature of the first battery cell reaching a threshold. The guiding channel is configured to guide emissions released from the pressure relief mechanism. The pressure relief end of the first battery cell is staggered with one end of the second battery cell that is close to the pressure relief end, in a direction leaving the guiding channel.

Connecting assembly, battery cell, battery, and power consumption device

Provided are a connecting assembly, a battery cell, a battery, and a power consumption device. The connecting assembly is used for a battery cell. The connecting assembly includes: a connector, including a first connecting portion for connecting a tab of an electrode assembly, a second connecting portion for connecting an electrode terminal, and a third connecting portion for connecting the first connecting portion and the second connecting portion, where a fusing portion is formed between the first connecting portion and the third connecting portion, and the third connecting portion has a first surface facing the electrode assembly; a first insulator wrapping the fusing portion; and a second insulator covering at least a portion of the first surface, where the second insulator and the first insulator are integrally formed.

End cover assembly, liquid injection method and device

Battery cell and manufacturing method and device therefor, battery, and electric device