公开(公告)号：US20170155105A1

公开(公告)日：2017-06-01

申请号：US15360794

申请日：2016-11-23

申请人： Samsung SDI Co., Ltd.

发明人： Jihyun KIM ,  Hyunki JUNG ,  Hyorim BAK ,  Jungho HA

IPC分类号： H01M2/12 ,  H01M2/02

CPC分类号： H01M2/0413 ,  H01M2/1241 ,  H01M2/345 ,  H01M2200/20

摘要： A secondary battery which can improve safety is provided. The secondary battery includes an electrode assembly, a can accommodating the electrode assembly and a cap assembly coupled to a top portion of the can, wherein the cap assembly comprises a cap-up, a safety vent installed under the cap-up, a cap-down installed under the safety vent, an insulator interposed between the safety vent and the cap-down, and a sub-plate positioned on a bottom surface of the cap-down, and an insulation layer is formed on a top surface of the cap-down.