公开(公告)号：US20230016421A1

公开(公告)日：2023-01-19

申请号：US17785246

申请日：2020-11-25

申请人： SANYO Electric Co., Ltd.

发明人： Takahiro Fukuoka ,  Shuichi Yamashita ,  Satoshi Yoshida ,  Kazuhiro Okuda

IPC分类号： H01M50/131 ,  H01M10/0587 ,  H01M50/183 ,  H01M50/152 ,  H01M50/107

摘要： Provided is a cylindrical battery with which it is possible to suppress an increase in weight while increasing capacity. A cylindrical battery includes: an electrode body comprising a positive electrode and a negative electrode, which are wound together via a separator; an electrolyte; a bottomed cylindrical outer can for accommodating the electrode body and the electrolyte; and a sealing body that is fixed to an open end portion of the outer can by swaging and is for sealing the outer can. In regard to the outer can, the outer diameter of a body part for accommodating the electrode body is 20 mm or greater, and the outer diameter of the open end portion for accommodating the sealing body is less than the outer diameter of the body part.