Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology (hong Kong) Limited

Contemporary Amperex Technology Limited

Shoujun Huang

Yulian Zheng

Peng Wang

Xinxiang Chen

Huasheng Su

Yanyu Liu

Chengdu Liang

Chengyou Xing

Wei Li

Xiang Li

Haizu Jin

Kai Wu

Yuanbao Chen

Baisong Chen

Guowei Li

Denghua Lin

Xiaoxi Zhang

Yan Luo

A battery cell is disclosed, including a housing, electrode terminals, and a protective member. The housing includes a wall portion and a fastener, where the fastener comprises a connecting portion and a pressing portion that together define a cavity. At least part of the electrode terminals is positioned within the cavity. The protective member includes a first protective portion covering the connecting portion and a second protective portion covering the pressing portion. The second protective portion extends beyond the pressing portion in a first direction. The structure reduces the likelihood of short circuits by shielding the pressing portion, thereby enhancing battery cell reliability.

Battery cell comprising protective member for preventing short circuit, battery comprising the battery cell, and electric apparatus comprising the battery

The present application provides an end cover assembly, a battery cell, a battery, an electric device and a method for preparing a battery cell and an apparatus for manufacturing a battery cell. The present application provides an end cover assembly, where the end cover assembly includes: a cover plate provided with a pressure relief hole; a fixing member fixed on the cover plate, the fixing member having a first through hole and a second through hole, and the first through hole being opposite to the pressure relief hole; and a gas permeable membrane covering at least a portion of the pressure relief hole, an edge part of the gas permeable membrane being connected to the fixing member, and a portion of the edge part being embedded into the second through hole, so as to prevent the edge part from moving relative to the fixing member.

End cover assembly, battery cell, battery and electric device

The present application relates to an end cover assembly, a battery cell, a battery, a power consumption device and a liquid injection method. The end cover assembly includes an end cover, a sealing piece and a cover body, wherein the end cover is provided with a first hole for injecting electrolyte; the sealing piece is configured to seal the first hole; the cove body is configured to cover at least part of the sealing piece, the cover body is rotatable relative to the end cover to realize detachable connection between the cover body and the end cover; one of the sealing piece and the cover body is provided with a second hole, the other one of the sealing piece and the cover body is provided with a boss; the boss is inserted into the second hole, and the boss and the second hole are relatively rotatable.

End cover assembly, battery cell, battery, power consumption device and liquid injection method

The present disclosure relates to a top cover assembly of a secondary battery and a secondary battery, wherein the top cover assembly includes a top cover plate, provided with a through hole; an electrode terminal, covering the through hole; an insulating plate, wherein at least part of the insulating plate is arranged on a side of the top cover plate away from the electrode terminal; a seal, wherein at least part of the seal is arranged between the top cover plate and the electrode terminal; and an insulator, wherein at least part of the insulator is arranged between the top cover plate and the insulating plate; wherein the insulator and the seal at least jointly enclose a side wall of the through hole and an area, close to the through hole, on an upper surface of the top cover plate.

Top cover assembly of secondary battery and secondary battery

An end cover assembly includes: an end cover with a through hole for injecting electrolyte and a first clamping portion, wherein the first clamping portion is disposed along a circumferential direction of the through hole and is located on one side of the end cover away from an interior of the battery cell; a sealing ring for sealing the through hole; and a pressure relief device covering at least part of the sealing ring and closing the through hole; wherein the pressure relief device includes a second clamping portion, and is rotatable such that when the pressure relief device is rotated to a first position, the second clamping portion is clamped with the first clamping portion; and when the pressure relief device is rotated to a second position, the second clamping portion is disengaged from the first clamping portion.

End cover assembly, housing assembly, battery cell, battery, and electric equipment

An end cap assembly, a battery cell, a battery, battery cell manufacturing equipment and method are provided, which belong to the technical field of batteries. The end cap assembly includes an end cap, an electrode terminal and a connector. The end cap is provided with an electrode lead-out hole which penetrates the end cap in a thickness direction of the end cap. The connector is configured to connect the end cap to fix the electrode terminal. The electrode terminal is provided opposite to the electrode lead-out hole, and a projection of the electrode terminal in the thickness direction does not overlap with a projection of the end cap in the thickness direction, thus a radial size of the electrode terminal is smaller, which reduces the space occupied by the electrode terminal, saves material and has better economy.

End cap assembly, battery cell, battery, battery cell manufacturing equipment and method

The present application relates to a top cover assembly and a secondary battery. The top cover assembly includes: a top cover plate including a lead-out hole and an inside surface forming the lead-out hole; an electrode terminal including a cylindrical portion penetrating the lead-out hole and an annular flange, the annular flange extending beyond the inside surface along the lead-out hole; a sealing ring including a barrel portion and a ring portion, surrounding the cylindrical portion by the barrel portion. The ring portion includes a first ring body and a second ring body distributed in the radial direction; an insulating member including a connecting portion and an extension portion, and the connecting portion seals the second ring body; a portion of the insulating member beyond the second ring body forms the extension portion, and in the radial direction, the extension portion extends beyond the annular flange.

Top cover assembly and secondary battery

A battery cell, a cover assembly, a battery, an electricity-consuming apparatus, a method and a device of manufacturing the battery cell are provided by the present application. The battery cell includes an electrode assembly; a casing accommodating the electrode assembly, in which the casing includes a wall portion, the wall portion includes a stepped hole, the stepped hole includes a first hole segment, a second hole segment and a first stepped face; a sealing member, in which a first sealing interface is formed between the sealing member and the first stepped face, the first sealing interface surrounds the first hole segment, and the sealing member includes a ventilating hole communicating with the first hole segment; a gas-ventilating film including a body and a convex portion, in which the body covers the ventilating hole, a second sealing interface is formed between the body and the sealing member.

Battery cell, cover assembly, battery, electricity-consuming apparatus, method and device of manufacturing battery cell

Embodiments of this application provide a battery column, a battery module, and an apparatus. The battery column includes a housing, and first battery cells and second battery cells that are alternately distributed side by side along a first direction in the housing, where the first battery cell includes a first metal case and a first insulating film, the first metal case has two first side surfaces disposed opposite each other along the first direction, and the first insulating film covers at least the two first side surfaces; and the second battery cell includes a second metal case, which is exposed in the housing.

Battery column, battery module, and apparatus

This application relates to a secondary battery, a battery column, and an apparatus. The secondary battery includes a top cover plate, having an outer surface and an inner surface disposed opposite each other in a thickness direction of the top cover plate and an electrode lead-out hole extending along the thickness direction; a pole, disposed in the electrode lead-out hole, where the pole includes a first metal layer and a second metal layer, and the first metal layer and the second metal layer are stacked along a direction from the inner surface to the outer surface; an insulation member, disposed between the top cover plate and the pole; and a first bonding layer, disposed between the insulation member and the first metal layer, where the insulation member is hermetically connected to the first metal layer through the first bonding layer.

Secondary battery, battery column, and apparatus

The present disclosure relates to a cap assembly and a secondary battery. The cap assembly includes a cap plate, an electrode terminal, a fixing member and a connection member. The cap plate includes an electrode lead-out hole, the electrode terminal includes a terminal board, the terminal board is located at a side of the cap plate and covers the electrode lead-out hole, the fixing member at least partially surrounds the terminal board to fix the terminal board to the fixing member, the connection member is separated from the electrode terminal by the fixing member, and the connection member is connected with the cap plate. The connection member includes a main body, the main body is provided with a first groove opened downwardly along a top of the main body, and a part of the fixing member is located in the first groove.

Cap assembly and secondary battery

An end cover assembly, a battery cell and an electrolyte injection method therefor, a battery, and a power consumption device are provided. The end cover assembly may include an end cover provided with a through hole for injecting an electrolyte and an accommodating portion; a seal configured to seal the through hole; and a cover body covering at least part of the seal, the cover body including a limiting portion, the limiting portion being located within the accommodating portion to restrict the cover body from separating from the end cover, and the cover body being movable together with the seal by movement of the limiting portion relative to the accommodating portion, wherein when the cover body moves to a first position, the seal covers the through hole, and when the cover body moves to a second position, the seal avoids the through hole.

End cover assembly, battery cell and electrolyte injection method therefor, battery, and power consumption device

The disclosure relates to a cap assembly and a secondary battery. The cap assembly includes: a cap plate including a main portion and a convex portion, wherein the main portion includes a first surface, a second surface and an electrode lead-out hole; an electrode terminal including an extension portion that extends beyond a hole wall of the electrode lead-out hole and extends in a circumferential direction of the electrode lead-out hole to form a ring structure, and the extension portion is arranged on a side of the first surface away from the second surface; and a sealing ring at least partially disposed between the extension portion and the main portion, wherein the convex portion is disposed on the second surface and around the electrode lead-out hole and has a thickness of 0.01 mm to 2 mm, a top surface of the convex portion extends out of the second surface.

The disclosure relates to a cap assembly and a secondary battery. The cap assembly includes: a cap plate including a main portion and a convex portion, the main portion including a first surface, a second surface and an electrode lead-out hole; an electrode terminal including an extension portion that extends beyond a hole wall of the electrode lead-out hole and extends in a circumferential direction of the electrode lead-out hole to form a ring structure, and the extension portion is arranged on a side of the first surface away from the second surface; and a sealing ring at least partially disposed between the extension portion and the main portion. The convex portion is disposed on the second surface and around the electrode lead-out hole, and a top surface of the convex portion extends out of the second surface.

The present disclosure provides a secondary battery and a top cover assembly thereof. The top cover assembly includes: a top cover plate and a valve sleeve. The top cover plate includes an accommodation groove and a valve part protruding upward from a bottom wall of the accommodation groove, and the valve part is provided with at least one gas exhaust hole that communicates with an interior of the secondary battery. The valve sleeve is located in the accommodation groove and covers the valve part, a gas exhaust passage that communicates with outside is disposed between the valve sleeve and the valve part, and the gas exhaust passage communicates with the at least one gas exhaust hole.

Growing community of inventors

Ningde, China

Shoujun Huang