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: Provided are end cover, battery cell, battery, electrical device, and manufacturing method. The end cover is provided with a first recess and a second recess at two sides thereof in its thickness direction, respectively. The first recess has a first bottom surface, and the second recess has a second bottom surface. A pressure relief portion is formed at a portion of the end cover between the first bottom surface and the second bottom surface along the thickness direction. The pressure relief portion has a weakened portion, and the weakened portion is broken when pressure is to be relieved from the battery cell. The end cover is provided with a first recess and a second recess at two sides thereof in the thickness direction, respectively.

Abstract: Provided an end cover assembly, a battery cell, a battery, and an electric apparatus. The end cover assembly in the embodiments of the present application includes: an end cover provided with a first through hole; and an electrode leading-out member including a connecting plate and a post terminal protruding from a surface of the connecting plate, at least part of the post terminal being disposed in the first through hole, and the connecting plate being located on one side of the end cover, where the connecting plate is connected to a tab of an electrode assembly. In the technical solutions of the embodiments of the present application, the electrode leading-out member is provided, which increases contact area between a post and a tab, expands overcurrent area between the post terminal and the connecting plate, reduces internal resistance, lowers temperature rise, and improves the safety performance of a battery cell.

Abstract: This application provides an exhaust device, a battery cell, a battery, and an electricity-consuming device. The exhaust device includes an exhaust body, a first venting member, and a second venting member; the first venting member is disposed on the exhaust body; the second venting member is disposed on the exhaust body and is disposed on a side of the first venting member in a thickness direction of the exhaust body, and the first venting member and the second venting member are configured to allow gas to pass through when gas pressure in the battery cell reaches a first threshold. The exhaust device provided by this application facilitates reducing the risk of electrolyte solution leakage inside the battery cell and ensuring normal pressure relief operation of the battery cell, thus further improving the safety performance of the battery cell.

Abstract: This application discloses an end cover assembly, a battery cell, a battery, and an electric apparatus. The end cover assembly includes a cover body, a first rib, and a second rib, where the cover body is provided with a pressure relief mechanism, the first rib and the second rib are both disposed on the cover body, the first rib is disposed around the pressure relief mechanism, and the second rib is disposed on a side of the first rib facing away from the pressure relief mechanism. With the foregoing technical solution used, use safety of the battery cell is effectively improved.

Abstract: A includes a housing, an electrode assembly, and a first insulating member. The housing includes a first wall and a second wall disposed opposite each other in a first direction, where the first wall is provided with an electrode terminal. The electrode assembly is accommodated in the housing, where the electrode assembly is electrically connected to the electrode terminal, and the first wall supports the electrode assembly. The first insulating member abuts against an end of the electrode assembly facing the second wall. In the first direction, a gap is formed between a surface of the first insulating member facing away from the electrode assembly and an inner surface of the second wall.

Abstract: A battery cell includes a shell, an electrode assembly, an end cover assembly, a support member, and a terminal assembly; the shell has an opening; the electrode assembly is accommodated in the shell; the end cover assembly is closed to the opening; the support member is disposed between the end cover assembly and a main body of the electrode assembly; at least a portion of the terminal assembly extends between the end cover assembly and the support member, and the terminal assembly is conductively connected to a tab of the electrode assembly; a first accommodating portion is disposed on a first surface, facing the end cover assembly, of the support member, and the first accommodating portion is configured to accommodate at least a portion of the terminal assembly.

Abstract: A battery cell includes a casing, an electrode assembly, an end cover assembly and a support member. The casing has an opening. The electrode assembly has a main body and tabs protruding from the main body. The electrode assembly is accommodated in the casing. The end cover assembly covers the opening. The support member is located in the casing, and the tabs are bent around the support member. In the above, the support member is connected to the end cover assembly, to fix the support member. The battery cell is provided therein with the support member, and the tabs are bent around the support member. In addition, the support member is connected to the end cover assembly.

Abstract: A battery cell includes a housing, at least one electrode assembly and a support member. The housing has a wall part. The electrode assembly has a main body and at least one tab. In the first direction, the tab protrudes from an end of the main body facing the wall part. The tab includes a root part and a tab part, and the root part connects the main body and the tab part. The support member is provided at one side of the main body facing the wall part. The support member includes at least one wing part, and the tab part is bent around the wing part. The wing part is provided with an accommodation part, and the accommodation part is used to accommodate a portion of the root part.

Abstract: A battery cell includes a shell having an opening, an electrode assembly accommodated in the shell, an end cover assembly used for closing the opening and provided with a liquid injection hole, and a blocking member provided separated from the end cover assembly and located on a side, facing the electrode assembly, of the end cover assembly. The blocking member is configured to at least partially block the liquid injection hole and allow a fluid medium to flow through the blocking member to an interior of the shell. The battery cell has a blocking member that blocks the liquid injection hole, and the fluid medium is at least partially blocked by the blocking member after passing through the liquid injection hole, so that the fluid medium enters the interior of the shell after passing through the blocking member.

Abstract: A battery cell includes an electrode assembly, a support member, and a conductive member. The electrode assembly has a main body part and a tab, and along first direction, the tab protrudes from one end of main body part. The tab is bent around the support member. In second direction, the tab includes a bent part located on one side of support member, and second direction is perpendicular to first direction. The conductive member is connected to the tab. The tab also includes a fixed area connected to the conductive member. In first direction, the fixed area is located on the side of support member facing away from the main body part.

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 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: 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: 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: 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 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: 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: 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.