公开(公告)号：US20240283062A1

公开(公告)日：2024-08-22

申请号：US18651636

申请日：2024-04-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanzhuang HUANG ,  Qi CHENG ,  Jiang LIN ,  Chuandong LIN ,  Weiwei WANG

IPC: H01M50/15 ,  H01M50/103 ,  H01M50/169 ,  H01M50/548

CPC classification number: H01M50/15 ,  H01M50/103 ,  H01M50/169 ,  H01M50/548

Abstract: A battery cell includes a shell and an end cap assembly, the shell being provided with an opening, and the end cap assembly including an end cap, an insulating member and an inner terminal, wherein the end cap is arranged at the opening, and a surface of the end cap close to the shell is provided with an annular protrusion extending in a circumferential direction of the end cap; the annular protrusion shrinks inwards relative to an edge of the end cap to form a flange between an outer side of the annular protrusion and the edge of the end cap; the flange is arranged on a shell wall of the shell, and the annular protrusion extends into the shell; and the insulating member is arranged in a groove enclosed by the annular protrusion, and the inner terminal is arranged on the insulating member.

公开(公告)号：US20240170809A1

公开(公告)日：2024-05-23

申请号：US18428727

申请日：2024-01-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chuandong LIN ,  Jiang LIN ,  Fei XUE

IPC: H01M50/536 ,  B23K20/10 ,  B23K101/36 ,  H01M10/04 ,  H01M50/54

CPC classification number: H01M50/536 ,  B23K20/10 ,  H01M10/0413 ,  H01M50/54 ,  B23K2101/36 ,  H01M2220/20

Abstract: A tab welding method includes performing a first welding on a plurality of stacked layers of positive tabs and negative tabs using a toothed welding head, to form a tab body having a first weld spot region, in such a manner that a solid-phase connection is performed on the plurality of stacked layers of positive tabs and negative tabs; and performing a second welding on the tab body using a toothless welding head, to form a second weld spot region, in such a manner that after the first welding, a formed uneven region is shaped and flattened.

公开(公告)号：US20240014476A1

公开(公告)日：2024-01-11

申请号：US18472000

申请日：2023-09-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jia LIN ,  Wenwei CHEN ,  Huan SHl ,  Jiang LIN

IPC: H01M50/14 ,  H01M50/133 ,  H01M50/103 ,  H01M50/529 ,  H01M10/04

CPC classification number: H01M50/14 ,  H01M50/133 ,  H01M50/103 ,  H01M50/529 ,  H01M10/049 ,  H01M10/0404 ,  H01M2220/20

Abstract: A battery cell includes an electrode assembly including a main body portion and a tab. The tab is connected with a side portion of the main body portion in a first direction. The battery cell further includes a protective frame, which is of an integrated structure and includes three segments of protective plates respectively used for protecting three side faces of the main body portion. The three segments of protective plates comprise a first plate, a second plate, and a third plate. The third plate is located between the first plate and the second plate, two ends of the third plate are respectively connected with a first end of the first plate and a first end of the second plate, and at least one of the first plate, the second plate, and the third plate is provided with an opening. The tab is led out from the opening.

公开(公告)号：US20240088447A1

公开(公告)日：2024-03-14

申请号：US18515260

申请日：2023-11-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hong WANG ,  Jia LIN ,  Jiang LIN ,  Jiang LIU

IPC: H01M10/0585 ,  H01M4/139 ,  H01M50/54

CPC classification number: H01M10/0585 ,  H01M4/139 ,  H01M50/54 ,  H01M2004/021

Abstract: An electrode assembly may include positive and negative electrode sheets, the positive and negative electrode sheets including positive and negative electrode current collectors and positive and negative electrode active material layers. The negative electrode sheet may be continuously bent and include a plurality of laminated segments and a plurality of bent segments for connecting the laminated segments; a plurality of the positive electrode sheets may be alternately laminated with the plurality of laminated segments in a first direction. An outermost positive electrode sheet may be a unilateral electrode having the positive electrode active material layer coated on an inner side rather than outer side of the positive electrode current collector thereof. The bent segment may be connected to an end of the laminated segment in a second direction; and the unilateral electrode may not extend beyond the adjacent bent segment.

公开(公告)号：US20230420812A1

公开(公告)日：2023-12-28

申请号：US18464945

申请日：2023-09-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Congsheng CHEN ,  Wenfa LIN ,  Yaoling WEN ,  Jiang LIN ,  Minghao TANG ,  Jia LIN

IPC: H01M50/566 ,  H01M50/103

CPC classification number: H01M50/566 ,  H01M50/103

Abstract: A tab welded structure includes a conductive member and a tab formed by stacking a plurality of layers of pieces in a first direction. The conductive member is welded to the tab to form a fused area. The fused area includes a first fused portion and a second fused portion. The first fused portion extends from the tab into the conductive member in the first direction. The second fused portion is demarcated from the first fused portion, the second fused portion is located at a side portion of the first fused portion, and the second fused portion is configured to be connected to the first fused portion and the tab.

公开(公告)号：US20210376371A1

公开(公告)日：2021-12-02

申请号：US17058463

申请日：2020-06-02

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Yiruo WANG ,  Chao YANG ,  Minghao TANG ,  Xiao WANG ,  Jiang LIN ,  Chuangchuang XIANG

IPC: H01M10/04

Abstract: The present application relates to a device for preparing an electrode assembly and a preparation method of the electrode assembly. Wherein the device for preparing the electrode assembly includes: a winding assembly; a plurality of first electrode plate unwinding apparatuses, configured to provide a plurality of first electrode plates for the winding assembly; and at least one second electrode plate unwinding apparatus, configured to provide at least one second electrode plate for the winding assembly, wherein a polarity of the first electrode plate is opposite to a polarity of the second electrode plate; and wherein the winding assembly is configured to wind the plurality of first electrode plates and the at least one second electrode plate, to form an electrode assembly. The present application is used for improving winding efficiency of the electrode assembly.