公开(公告)号：US20230253669A1

公开(公告)日：2023-08-10

申请号：US18003476

申请日：2022-02-09

申请人： Samsung SDI Co., Ltd.

发明人： Jong Jun PARK ,  Dae Kyu KIM ,  Shin Jung KIM ,  Sung gwi KO

IPC分类号： H01M50/342 ,  H01M50/152

CPC分类号： H01M50/3425 ,  H01M50/152 ,  H01M2200/20

摘要： The present disclosure provides a secondary battery capable of increasing an operation time till a breakdown of a safety vent at a high temperature environment. As an example, disclosed is a secondary battery comprising: a can having a space therein; an electrode assembly accommodated in the space of the can; and a cap assembly for sealing the electrode assembly by blocking the can, wherein the cap assembly comprises a cap-up, a cap-down under the cap-up, and a safety vent between the cap-up and the cap-down, wherein the safety vent comprises a support protrusion formed on a contact surface coupled to the cap-up.