公开(公告)号：US20220223979A1

公开(公告)日：2022-07-14

申请号：US17712084

申请日：2022-04-02

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qinglin BAI ,  Zhiyang WU ,  Shan GAO ,  Chunyang PENG ,  Lingyan JIANG

IPC: H01M50/474 ,  H01M10/04 ,  H01M50/107 ,  H01M50/531 ,  H01M50/477

Abstract: The present application relates to a secondary battery, a battery module and an apparatus. The secondary battery includes an electrode assembly and a casing. The electrode assembly includes a main body portion and a tab portion, the tab portion extending out from the main body portion along an end of the main body portion and including an outer peripheral surface. The casing includes an accommodating hole for accommodating the electrode assembly. The casing includes a limiting protrusion. The outer peripheral surface extends around an axis of the accommodating hole. The limiting protrusion protrudes toward the tab portion and presses against the outer peripheral surface of the tab portion. The limiting protrusion is adapted to limit a position of the tab portion. The secondary battery provided by the present application can reduce the possibility of fatigue fracture of the adapting piece.