Abstract: This application provides a battery cell, a battery, and an electrical device, and enhances safety of the battery cell by improving the structure of the battery cell. The battery cell includes: a housing, on which an opening is created; an electrode assembly, accommodated in the housing; an electrode terminal, disposed on a bottom wall of the housing and connected to a tab of the electrode assembly, where the bottom wall is opposite to the opening; and a cover plate, connected to the housing and configured to fit and cover the opening.

Abstract: A battery cell includes a shell, an electrode assembly, an end cover assembly, and a support member. The shell has an opening. The electrode assembly has a main body and a tab protruding from the main body, and the electrode assembly is accommodated in the shell. The end cover assembly closes the opening. The support member is located between the end cover assembly and the main body. The support member includes a support body and a buckle portion. The support body has first and second surfaces facing and facing away the end cover assembly, respectively, in a thickness direction of the end cover assembly. The buckle portion is disposed on the support body, in buckle fit with the end cover assembly, and located between the first and second surfaces. The support member is disposed between the end cover assembly and the main body of the battery cell.

Abstract: A pressure relief device includes a pressure relief portion, a weak portion and a weld mark portion. The weak portion is arranged at the pressure relief portion and configured to crack when pressure is relieved from the battery cell. The weld mark portion is arranged at the pressure relief portion and configured to anneal the weak portion when the weld mark portion is formed. The weld mark portion is arranged on the pressure relief portion of the pressure relief device.

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: Described is a battery cell, which includes a casing having a first opening; an electrode assembly received in the casing, the electrode assembly having a first tab, a second tab and a third tab, the first tab having an opposite polarity to the second tab, and the third tab having the same polarity as the first tab or the second tab; an end cap for closing the first opening; an insulating member disposed between the end cap and the electrode assembly, wherein the third tab is configured to be connected with the insulating member. It is possible to improve the heat dissipation efficiency of the battery cell by additionally providing a heat dissipation path of the electrode assembly—the third tab—the insulating member—the end cap, thereby improving the overcurrent capacity and the safety performance of the battery cell.

Abstract: An end cover assembly comprises: a top cover sheet, comprising a first surface and a second surface which are arranged opposite to each other along the thickness direction of the top cover sheet, a mounting hole running through the top cover sheet along the thickness direction thereof, and an inner wall surface that faces the mounting hole; the top cover sheet is provided with a first insulating layer, and at least part of the first insulating layer is located on the inner wall surface.

Abstract: A battery cell includes a shell, an electrode assembly, and a first insulating member. The shell has an opening and a bottom wall opposite to the opening. The electrode assembly is accommodated in the shell. The first insulating member is used for separating the electrode assembly and the bottom wall. The first insulating member is provided with a first through hole, and projections of the electrode assembly and the first through hole on the bottom wall partially overlap or do not overlap in a thickness direction of the bottom wall.

Abstract: An end cover assembly comprises: an end cover provided with a through hole; an electrode terminal at least part of which is located in the through hole; a terminal board insulated from the end cover, provided on a side of the end cover in the axial direction of the through hole and connected to the electrode terminal; and a first insulating member provided around the electrode terminal in the peripheral direction of the through hole, at least partially clamped between the electrode terminal and the terminal board in the axial direction, and at least partially located between an electrode terminal and the end cover and abutting against at least one of the electrode terminal and the end cover in a radial direction of the through hole.

Abstract: An end cover assembly comprises: an end cover, an electrode terminal, a terminal board, and an insulating member. The end cover is provided with a first through hole; the electrode terminal comprises a terminal body and an annular first protrusion protruding from the outer peripheral surface of the terminal body, at least part of the terminal body is accommodated in the first through hole, and the diameter of the first protrusion is greater than that of the first through hole; the terminal board is disposed on the side of the end cover facing away from the first protrusion and is connected to the terminal body; the insulating member disposed around the terminal body; the insulating member comprises an insulating body and a blocking portion.

Abstract: An end cap includes a cap body and a pressure relief groove and the pressure relief groove is provided in the cap body. The pressure relief groove includes a long groove section and a short groove section located in different orientations, wherein the long groove section is connected to the short groove section. The long groove section is provided with a thickening zone, and a thickness of the cap body in the thickening zone is greater than a thickness of the cap body in the short groove section.

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: The present application provides an adapting sheet, a battery cell, a battery, and an electric apparatus. The adapting sheet includes a pole connection portion, a tab connection portion, and a bending portion. In a first direction, two sides of the pole connection portion are respectively connected to the tab connection portion through the bending portion. In a second direction, a height difference is formed between the pole connection portion and the tab connection portion, and the first direction is non-parallel to the second direction. The adapting sheet in the present disclosure is applied in the battery cell, so that the tab may be disposed at both sides of the pole in a width direction of the cell.

Abstract: A battery cell includes a shell, an electrode assembly, and an insulator; the shell includes a bottom wall and a side wall disposed at a periphery of the bottom wall; the electrode assembly is accommodated in the shell; the insulator includes a first insulating portion and a second insulating portion that are connected, the first insulating portion is used for separating the electrode assembly from the bottom wall, the first insulating portion is provided with a through hole, and the second insulating portion is used for separating the electrode assembly from the side wall; and the insulator further includes a folding portion, which is disposed on the first insulating portion in a foldable manner, and is configured to be stacked with the first insulating portion to cover the through hole.

Abstract: The present application provides an end cover assembly, a battery cell, a battery, and an electrical device, relating to the field of batteries. The end cover assembly includes an end cover, an electrode terminal, and an insulating member. The end cover is used for closing an opening of a shell. The end cover has a mounting portion, which confines a mounting hole. The electrode terminal at least partially passes through the mounting hole. The insulating member includes a first insulating portion, a second insulating portion, and a third insulating portion connected sequentially. The second insulating portion is at least partially located in the mounting hole, and the first insulating portion and the third insulating portion are separately located on two sides of the mounting portion in a thickness direction of the end cover to cover the mounting portion.

Abstract: Provided are an end cover assembly, a battery unit, a battery, and an electricity consuming apparatus. The end cover assembly includes an end cover, a pressure relief mechanism, and a protective sheet. The end cover includes a main body part and a protruding part which protrudes from the main body part along the thickness direction of the end cover. The end cover is provided with a through hole which passes through the main body part and the protruding part. The pressure relief mechanism is disposed on a side of the main body part away from the protruding part and covers the through hole. The protective sheet is attached to a surface of the protruding part away from the main body part and covers the through hole. The protruding part includes a first convex part and a second convex part.

Abstract: This disclosure provides an anti-explosion valve patch for battery, an end cover assembly, a battery, and an electric apparatus. The anti-explosion valve patch has an exhaust hole and includes: a patch body; and a closed convex ring disposed on the patch body, protruding from a surface of the patch body to a same side, where the exhaust hole is located on the closed convex ring or in a region enclosed by the closed convex ring. The anti-explosion valve patch of this disclosure is conducive to maintaining the protection capability of the anti-explosion valve. The end cover assembly of this disclosure includes such anti-explosion valve patch. The battery of this disclosure includes such end cover assembly. The electric apparatus of this disclosure includes such battery.

Abstract: A battery cell includes electrode assemblies arranged in a first direction, where an end part of each electrode assembly along a second direction perpendicular to the first direction is provided with a tab; and a connection member configured to connect tabs of the electrode assemblies and an electrode terminal of the battery cell. The connection member includes a main body portion and a pin, the main body portion extends along the first direction, and includes a first surface and a second surface perpendicular to the second direction, the main body portion is provided with a plurality of through grooves passing through the first surface and the second surface, and the plurality of through grooves are respectively configured to accommodate the tabs of the plurality of electrode assemblies.

Abstract: Provided are an end cover assembly, a battery cell, a battery, and an electrical device, relating to the field of batteries. The end cover assembly includes an end cover, a groove, and a reinforcing portion. The end cover has a first surface and a second surface opposite in its thickness direction. The groove is recessed from the first surface in a direction towards the second surface. The reinforcing portion protrudes from the first surface and/or the second surface, and surrounds the groove.

Abstract: A battery cell, a battery and an electricity-consuming apparatus are provided by the present application. The battery cell includes an electrode assembly including an electrode main body that includes an electrode sheet and a separator stacked with each other, and an electrode tab extending from an end face of the electrode main body; and an infiltrating film including a first end and a second end arranged opposite to each other in a length direction thereof, in which the second end is connected to the separator, and the first end extends beyond the electrode main body.

Abstract: A battery cell includes a shell; an electrode assembly; and an end cap assembly, including an end cap, a first insulating member and a second insulating member, where the first insulating member is arranged between the electrode assembly and the end cap, so as to insulate and isolate the electrode assembly from the end cap, the second insulating member includes a main body portion and a first flanging portion, the first flanging portion is connected to one end of the main body portion, the main body portion is arranged between the shell and the electrode assembly, so as to insulate and isolate the shell from the electrode assembly, and the first flanging portion is connected to a side of the first insulating member facing the end cap or a side of the first insulating member away from the end cap.