公开(公告)号：US20220085445A1

公开(公告)日：2022-03-17

申请号：US17535676

申请日：2021-11-25

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuyong LEI ,  Chengyou XING ,  Peng Wang ,  Jianxiong YANG ,  Lulu BAI ,  Qichang CAI

IPC: H01M50/15 ,  H01M50/55 ,  H01M50/553 ,  H01M50/564 ,  H01M50/166

Abstract: A secondary battery is disclosed, including: an electrode unit, including an electrode body and a tab extending from the electrode body, where the tab includes a first part and a second part that are spaced apart along a height direction of the secondary battery; and a top cover assembly, disposed on one side of the electrode body toward the tab, where the top cover assembly includes a top cover body and a hold-down beam, and a positioning bulge is disposed on a first surface of the top cover body toward the electrode unit, a positioning chute is disposed on the positioning bulge, and the hold-down beam is located between the first part and the second part, and is detachably disposed in the positioning chute.