公开(公告)号：US20240347824A1

公开(公告)日：2024-10-17

申请号：US18754203

申请日：2024-06-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenlin Zhou ,  Liangfan Xu ,  Daowei Yang ,  Jian Zhou ,  Quankun Li ,  Peng Wang

IPC: H01M50/15 ,  H01M50/103 ,  H01M50/131 ,  H01M50/553

CPC classification number: H01M50/15 ,  H01M50/103 ,  H01M50/131 ,  H01M50/553

Abstract: Provided are an end cover assembly, a battery cell, a battery, and an electrical device, relating to the field of batteries. The end cover assembly includes an end cover, a groove, and a reinforcing portion. The end cover has a first surface and a second surface opposite in its thickness direction. The groove is recessed from the first surface in a direction towards the second surface. The reinforcing portion protrudes from the first surface and/or the second surface, and surrounds the groove.