Abstract: An end cover assembly applied to a battery cell includes an end cover provided with an electrode lead-out hole and including a first mating portion provided at a side, facing inside of the battery cell, of the end cover, an electrode terminal disposed at the end cover and covering the electrode lead-out hole, and a connecting member configured to electrically connect the electrode terminal and an electrode assembly of the battery cell. The connecting member includes a second mating portion configured to be mated with the first mating portion to provide deformation resistance of the connecting member along a radial direction of the electrode lead-out hole.

Abstract: An end cover assembly may include: a cover plate provided with an electrode lead-out hole; an electrode terminal located on one side of the cover plate in a thickness direction and covering the electrode lead-out hole; and a sealing element disposed between the electrode terminal and the cover plate so as to seal the electrode lead-out hole along a circumference of the electrode lead-out hole. The sealing element may include a body and a first insulating element. The first insulating element may be connected to the body and have a higher melting point than the body. The first insulating element may be configured to insulate the electrode terminal from the cover plate after the body is melted, so as to keep electrode terminals of two polarities insulated from each other at thermal runaway of a battery cell.

Abstract: A battery, an electrical device, and a method and device for manufacturing a battery are provided. In some embodiments, the battery includes: a plurality of battery cells arranged along a first direction, where a plate-like electrode terminal is disposed on each end face of each of the battery cells along a first direction, so that two electrode terminals of two battery cells are disposed between two end faces opposite to each other along the first direction; and the two electrode terminals are configured to be at least partly stacked and fixedly connected between the two end faces along a thickness direction of the electrode terminal to enable electrical connection between the two battery cells. By fixedly connecting the electrode terminals of the battery cells directly, electrical connection is implemented between the two battery cells.

Abstract: The present disclosure provides a secondary battery which comprises: a cap plate provided with a first electrode terminal; an electrode assembly comprising a main body and a first electrode tab; a first connecting piece connected between the first electrode tab and the first electrode terminal. The first connecting piece includes a first electrode terminal connecting portion, a first electrode tab connecting portion and a first fusing portion. The secondary battery further comprises an insulating piece arranged on the first connecting piece to prevent direct physical contact between the first electrode tab and the first electrode terminal connecting portion by covering at least an edge of the first electrode terminal connecting portion.

Abstract: This application discloses a battery, an electrical device, and a method and device for manufacturing a battery. The battery includes: a plurality of battery cells arranged along a first direction, where electrode terminals are disposed on two end faces of each of the battery cells along the first direction respectively; and a busbar component, configured to connect the two electrode terminals to implement electrical connection between two battery cells. The busbar component includes a flexible bend portion. The flexible bend portion is configured to adjust a relative position between the two electrode terminals. A maximum width of the flexible bend portion along the first direction is greater than a distance between the two electrode terminals. The flexible bend portion disposed in the busbar component can be bent in various forms to meet a requirement of electrically connecting the two battery cells arranged at a variety of relative positions.

Abstract: The present application provides a chassis, a vehicle, a device for manufacturing a vehicle and a method for manufacturing a vehicle. The chassis includes at least two movable bodies that are continuously arranged along a first preset direction, and by adjusting a position of at least one movable body in the first preset direction, a length of the chassis in the first preset direction can be changed so as to enable the chassis to adapt to the vehicle body of a different length. Since each movable body is provided at an adjacent movable body thereof with a position adjustable in a preset direction, the chassis is made into a telescopic structure that is adjustable in length. The length of the chassis can be adjusted according to the requirements to enable the chassis to adapt to the vehicle body of a different length.

Abstract: A cap assembly of a power battery comprises: a cap plate, a first electrode terminal provided to the cap plate, and a resistance member electrically connected to the cap plate and the first electrode terminal. The resistance member comprises: a heat-resistant insulating base body positioned between the cap plate and the first electrode terminal; and a heat-resistant metal layer provided to a circumferential side of the heat-resistant insulating base body. The heat-resistant metal layer and the cap plate and the first electrode terminal are electrically connected to form a conductive path. The formed conductive path is a curved path, therefore the resistance value of the resistance member can be controlled by controlling the conductive path.

Abstract: The present disclosure relates to an electrode component, an electrode assembly and a rechargeable battery. The electrode component includes an electrode body, a conductive structure, and a reinforcement structure. The electrode body includes an insulating substrate and a conductive layer disposed on surfaces of the insulating substrate, the conductive layer includes a first portion coated with an active material and a second portion extending from the first portion and uncoated with the active material. The conductive structure is connected to the second portion. The reinforcement structure reinforces the conductive structure on the second portion. According to the present disclosure, by reinforcing the conductive structure connected to the second portion of the electrode component having the insulating substrate by the reinforcing structure, the reliability of the arrangement of the conductive structure on the second portion can be effectively improved.

Abstract: The present disclosure provides a secondary battery which comprises: a cap plate provided with a first electrode terminal; an electrode assembly comprising a main body and a first electrode tab; a first connecting piece connected between the first electrode tab and the first electrode terminal. The first connecting piece includes a first electrode terminal connecting portion, a first electrode tab connecting portion and a first fusing portion. The secondary battery further comprises an insulating piece arranged on the first connecting piece to prevent direct physical contact between the first electrode tab and the first electrode terminal connecting portion by covering at least an edge of the first electrode terminal connecting portion.

Abstract: The present disclosure provides a secondary battery which comprises: a cap plate provided with a first electrode terminal and a second electrode terminal; an electrode assembly comprising a main body, a first electrode tab and a second electrode tab; a first connecting piece connected between the first electrode tab and the first electrode terminal. The second electrode tab is electrically connected with the second electrode terminal. The first connecting piece includes a first electrode terminal connecting portion, a first electrode tab connecting portion and a first fusing portion. The secondary battery further comprises an insulating piece adhered on a surface of the first connecting piece which is connected with the first electrode tab, and the insulating piece at least covers an edge of the first electrode terminal connecting portion close to the first electrode tab, so as to isolate the first electrode tab from the first electrode terminal connecting portion.

Abstract: The present disclosure relates to a vent for a secondary battery top cover, a top cover assembly, a secondary battery and a vehicle. The vent includes a flat base and a protrusion protruding outward with respect to flat base. The protrusion has a main nick and at least one branch nick connected to at least one end of the main nick. An angle formed between the main nick and the branch nick is more than zero. When the pressure inside the case increases excessively, gas causes stress concentration at the protrusion such that the vent is torn along the main nick and the at least one branch nick, thereby releasing the gas in the case, reducing explosion risk of the secondary battery, and improving safety of the secondary battery.

Abstract: The present invention relates to the technical field of rechargeable batteries and, in particular, to an electrode member, an electrode assembly and a rechargeable battery. The electrode member of the present invention includes an electrode body. The electrode body includes an insulating base and a conductive layer disposed on a surface of the insulating base. The conductive layer has a first portion and a second portion extending from the first portion, the first portion is adapted to be coated with an active material and the second portion is uncoated with the active material. A portion of the insulating base corresponding to the second portion is provided with a first through-hole throughout a thickness direction.

Abstract: A secondary battery, including an electrode assembly, a positive terminal, a negative terminal, a top cover plate, a conductive plate and a contact plate, wherein the electrode assembly includes a positive electrode plate, a negative electrode plate and a separator provided therebetween, the positive electrode plate is electrically connected with the positive terminal, and the negative electrode plate is electrically connected with the negative terminal, the contact plate is attached to the negative terminal, the top cover plate is insulated from the negative terminal and is electrically connected with the positive terminal, the conductive plate is fixedly connected with the top cover plate, the contact plate is configured to deform under gas pressure to be in contact with the conductive plate when an internal pressure of the secondary battery exceeds a reference pressure.

Abstract: Provided are a top cover assembly and a secondary battery containing the same. The top cover assembly includes a cover plate, and a first terminal assembly; the top cover plate includes a main body and a protrusion connected to the main body, the protrusion protrudes beyond an upper surface of the main body, an accommodation chamber is defined below the protrusion, the protrusion faces the accommodation chamber, the first terminal assembly includes a deformable plate, and the deformable plate is connected to the top cover plate and covers the accommodation chamber. Such solution can sufficiently utilize the space between the upper surface of the top cover plate and the upper surface of the second terminal assembly, improve the space utilization of the secondary battery, improve the deformation resistance of the top cover plate and the strength of the top cover plate, and keep the secondary battery safe.

Abstract: The present disclosure relates to technical field of energy storage devices, and in particular, to a secondary battery and a vehicle. The secondary battery includes a top cover plate, electrode terminals disposed on the top cover plate, at least one electrode assembly including a main body and a plurality of conductive portions extending from the main body. The plurality of conductive portions is stacked and forms a tab, and the main body is formed by winding a first electrode plate, a second electrode plate and a separator disposed between the first electrode plate and the second electrode plate. The secondary battery also includes connecting pieces for connecting the tab to the electrode terminal. The tabs extend from one side of the main body viewed in thickness direction and are bent with respect to height direction and is connected to the connecting piece.

Abstract: This application provides a secondary battery including an electrode assembly, a first terminal, a second terminal, a top cover plate and a contacting plate attached to the first terminal, the electrode assembly includes a first electrode, a second electrode and a separator between the first electrode and the second electrode, the first terminal is electrically connected with the first electrode, the second terminal is electrically connected with the second electrode, the top cover plate is insulated from the first terminal and is electrically connected with the second terminal, when internal pressure of the secondary battery exceeds reference pressure, the contacting plate deforms under the internal pressure and contacts the top cover plate, so as to form an electrical connecting path through the first electrode, the first terminal, the contacting plate, the top cover plate, the second terminal and the second electrode.

Abstract: The present application provides a secondary battery including a first terminal component, a second terminal component, a cap plate, an electrode component and a resistance element. One of the first and second terminal components is electrically connected to the cap plate through the resistance element, while the other is insulated from the cap plate. The first terminal component includes a connecting plate and a turnable plate, and the connecting plate is attached to the turnable plate. When the secondary battery is in a normal state, a first electrode plate is electrically connected to the connecting plate through the turnable plate, and the second electrode plate is electrically connected to the second terminal component. When a pressure inside the secondary battery exceeds a reference pressure, the turnable plate can turn over to cut off an electrical connection between the turnable plate and the first electrode plate.

Abstract: The present application relates to a top cover structure for a power battery and a power battery, the top cover structure includes a first electrode assembly, a second electrode assembly, a first resistor, a second resistor, a top cover plate, a first short circuit component and a second short circuit component, the first electrode assembly is electrically connected with the top cover plate through the first resistor for all time, the first short circuit component and the second short circuit component are both attached onto the top cover plate, when an internal pressure of the power battery exceeds a reference pressure, the first short circuit component and the second short circuit component deform by effect of pressure, so as to form a first electrical connecting path and a second electrical connecting path, the second resistor is connected into the first electrical connecting path in series.

Abstract: A cap assembly of a power battery comprises: a cap plate, a first electrode terminal provided to the cap plate, and a resistance member electrically connected to the cap plate and the first electrode terminal. The resistance member comprises: a heat-resistant insulating base body positioned between the cap plate and the first electrode terminal; and a heat-resistant metal layer provided to a circumferential side of the heat-resistant insulating base body. The heat-resistant metal layer and the cap plate and the first electrode terminal are electrically connected to form a conductive path. The formed conductive path is a curved path, therefore the resistance value of the resistance member can be controlled by controlling the conductive path.

Abstract: The present disclosure relates to an electrode component, an electrode assembly and a rechargeable battery. The electrode component includes an electrode body, a conductive structure, and a reinforcement structure. The electrode body includes an insulating substrate and a conductive layer disposed on surfaces of the insulating substrate, the conductive layer includes a first portion coated with an active material and a second portion extending from the first portion and uncoated with the active material. The conductive structure is connected to the second portion. The reinforcement structure reinforces the conductive structure on the second portion. According to the present disclosure, by reinforcing the conductive structure connected to the second portion of the electrode component having the insulating substrate by the reinforcing structure, the reliability of the arrangement of the conductive structure on the second portion can be effectively improved.