Abstract: Embodiments of the present application provide an end cap, a battery cell, a battery and a power consuming device, which relate to the technical field of batteries. The end cap may include a cap body and a groove. The cap body may have a first surface. The groove may be provided in the cap body to form a pressure relief zone in a region of the cap body where the groove is provided. The groove may be recessed from the first surface in a thickness direction of the cap body, and groove side faces of the groove may include corner faces at corners of the groove. Each corner face may be connected to the first surface via a first chamfer face.

Abstract: Battery cell and a device and a method for manufacturing the same, a battery, and a power consumption device are provided. The battery cell includes: a shell; an end cap patch; an end cap patch; an insulating film, including a main body portion and a flanging portion, wherein the flanging portion is provided between the end cap and the end cap patch; and a first glue layer, comprising a first portion and a second portion which are provided continuously. The first portion is provided around the second portion, and the first portion is provided between the flanging portion and the end cap patch. The first portion bonds the flanging portion and the end cap patch. The second portion is provided between the end cap and the end cap patch, and the second portion bonds the end cap and the end cap patch. The first portion is thinner than the second portion.

Abstract: Disclosed are reactive dyes and preparation methods thereof. The reactive dye may be prepared using heterocyclic primary amine as a diazo component, 4,4?-diamino-2,2?-stilbenedisulfonic acid, s-triazine, or ethylenediamine as a bridging group, and a dimonochlortriazine group as an active group. The color-changing compound is covalently bonded into the fiber chemical structure by nucleophilic substitution reaction between monochlorotriazine and the hydroxyl group in a textile structure, and the size of the conjugated system and the range of electron delocalization of the dye are changed by a reversible isomerization reaction of the hydroxyl group adjacent to the diazo group and the diazo group under different pH regulations. Moreover, the dye has a double color changing structure, which improves the capability of the dye combined with —H/—OH. The pH value range that can cause color changes in the dye is effectively expanded to include weak alkali, weak acid or even neutral conditions.

Abstract: Provided are an end cover assembly, a battery cell, a battery, and an electrical apparatus. The end cover assembly is for a battery cell and comprises: an end cover provided with a pressure relief through hole; a pressure relief mechanism connected to the end cover and covering the pressure relief through hole, and configured to be actuated to release the pressure inside the battery cell when the pressure reaches a threshold; and a reinforcing mechanism, located on a side of the end cover facing away from an electrode assembly of the battery cell, and covering at least a part of the pressure relief through hole. The reinforcing mechanism is at least connected to a portion of the end cover at two sides of the pressure relief through hole along a first direction to enhance the strength of the end cover at the pressure relief through hole.

Abstract: 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.

Abstract: A battery cell, a battery, a power consuming apparatus, and a method and apparatus for manufacturing the battery cell are described. The battery cell includes a housing, an electrode assembly, and an end cap. The electrode assembly is accommodated in the housing. The end cap includes a first body portion and a first protrusion. The first body portion surrounds an edge of the first protrusion and is configured to be connected to the housing, the first protrusion protrudes relative to the first body portion in a direction away from the electrode assembly in a thickness direction of the end cap, and a first accommodating space is formed inside the first protrusion and is configured to accommodate at least a part of a tab of the electrode assembly. The first body portion is provided with a reinforcement portion being configured to enhance the stiffness of the first body portion.

Abstract: An end cap includes a cap body, a pressure relief boss, and an insulating member. The cap body has a pressure relief region and an outer surface. In a thickness direction of the cap body, the pressure relief boss is arranged on the outer surface in a protruding manner and surrounds the pressure relief region. The insulating member is attached to the outer surface. In the thickness direction, the pressure relief boss does not extend beyond, in a direction facing away from the outer surface, an end of the insulating member that faces away from the outer surface.

Abstract: A pressure relief apparatus includes a pressure relief portion provided with a first surface and a second surface arranged opposite to each other in a thickness direction of the pressure relief portion, and at least one stage of depressed groove and an indented groove. The at least one stage of depressed groove and the indented groove are formed in the pressure relief portion in sequence in a direction from the first surface to the second surface. A groove bottom wall of the stage of depressed groove farthest away from the first surface among the at least one stage of depressed groove is provided with an opening area. The indented groove is formed along an edge of the opening area. The opening area is configured to be openable with the stage of indented groove farthest away from the first surface as a boundary.

Abstract: Embodiments of this application provide an end cap assembly, a battery cell, a battery, and an electrical device. The end cap assembly may be applicable to the battery cell. The end cap assembly may include: an end cap; and an end cap patch attached to the end cap. At least one through-hole may be made on the end cap patch. The through-hole may be configured to be filled with a heat transfer structure. The end cap may exchange heat with the outside through the heat transfer structure so as to regulate a temperature inside the battery cell.

Abstract: An end cap includes a cap body and a reinforcing portion. The cap body is provided with a pressure relief region arranged on a side of the cap body in a protruding manner in a thickness direction. The reinforcing portion is arranged around the pressure relief region.

Abstract: An end cap, a battery cell, a battery and a power consuming device are described. The end cap includes a cap body and a pressure relief groove. The pressure relief groove is provided in the cap body, and the pressure relief groove defines a pressure relief zone. A length direction of the pressure relief zone is consistent with a width direction of the cap body. The end cap has a stress concentration region at a short edge of the pressure relief groove when the inner side of the end cap is subjected to the pressure inside the battery cell, and the end cap has a stress concentration region at a long edge of the pressure relief groove when the outer side of the end cap is subjected to an impact force.

Abstract: An end cap may comprise a cap body and a pressure relief groove. The cap body may be provided with a pressure relief portion, wherein the pressure relief groove may be formed in the cap body, and the pressure relief groove may delimit the pressure relief portion. The pressure relief portion may be bent in a thickness direction of the cap body.

Abstract: 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.

Abstract: A pressure relief apparatus includes a pressure relief part having a first surface and a second surface opposite to each other in a thickness direction of the pressure relief part, and a plurality of stages of score grooves sequentially arranged on the pressure relief part in a direction from the first surface to the second surface. Of two adjacent stages of score grooves in the thickness direction, one stage of score groove that is farther from the first surface is arranged on a bottom surface of another stage of score groove that is closer to the first surface.

Abstract: Embodiments of the present application provide a battery cell. The battery cell may include: a casing having an accommodating space; an electrode assembly accommodated in the accommodating space, the electrode assembly comprising electrode plates; and a heat-conducting structure configured to be directly connected to the electrode plates and the casing to conduct heat from the electrode assembly to the casing.

Abstract: The present application provides an end cover assembly used for a battery cell. The end cover assembly includes: an end cover; a pressure relief mechanism arranged on the end cover and including a weak portion, the pressure relief mechanism being configured to rupture along the weak portion to release the pressure inside the battery cell when the pressure reaches a threshold; and an insulating member located on one side of the end cover facing an electrode assembly of the battery cell and including a base portion connected to the end cover and a guide portion arranged on the base portion communicating the space between the base portion and the pressure relief mechanism with the space on one side of the base portion facing away from the weak portion. In a thickness direction of the end cover, a projection of the guide portion does not overlap with a projection of the weak portion.

Abstract: A battery cell, a battery, an electrical device, and a method and device for manufacturing the battery cell. In some embodiments, the battery cell comprises a battery core, a shell, an end cover, and a first insulating component. The battery core comprises a main body part and electrode tabs protruding from the main body part. The shell has a first opening and is configured to accommodate the battery core. The end cover is configured to cover the first opening. The first insulating component comprises an insulating main body and an insulating part, wherein the insulating main body is located on a side, facing the electrode tabs, of the end cover, and the insulating main body is configured to isolate the battery core from the end cover.

Abstract: 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.

Abstract: A battery cell, a battery, an electric device, and a method and device for manufacturing battery cell are provided. The battery cell includes an electrode assembly; and a housing configured to accommodate the electrode assembly, where a first wall of the housing includes a first body and a mounting body connected to the first body, the mounting body is provided with a pressure relief mechanism, and the pressure relief mechanism is configured to be actuated when internal pressure or temperature of the battery cell reaches a threshold, so as to relieve the pressure; in a thickness direction of the first wall, at least part of the mounting body protrudes out of a surface of the first body facing the electrode assembly in a direction approaching the electrode assembly.

Abstract: The embodiments of this application provide a battery cell, a battery, an electrical device, and a battery cell manufacturing method and device, which pertains to the technical field of batteries. The battery cell includes an electrode assembly, a housing, an end cover assembly, and a support piece. The electrode assembly includes a main body and tabs. The housing has an opening and is used to accommodate the electrode assembly. The end cover assembly is used to cover the opening. The support piece is located between the main body and the end cover assembly, the tabs are bent around the support piece, and the support piece is configured to prevent the main body from moving along a direction facing the end cover assembly.