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.