公开(公告)号：US20230395330A1

公开(公告)日：2023-12-07

申请号：US18250179

申请日：2021-10-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Toshitaka KOBAYASHI ,  Eiko ISHII ,  Hideki SHIMAMOTO ,  Ryota MORIOKA ,  Hiroki HAYASHI

IPC: H01G9/10 ,  H01G9/00 ,  H01G9/12

CPC classification number: H01G9/10 ,  H01G9/0029 ,  H01G9/12

Abstract: A disclosed power storage device includes a power storage element, a case with a bottomed cylindrical shape having an opening at one end and housing the power storage element, and a sealing member for sealing the opening. The case has, in a vicinity of the opening, a first pressing portion pressing a side surface of the sealing member and protruding inward of the case, and a gas vent portion disposed nearer to the one end of the case than an apex which is the most protruded point of the first pressing portion. This can provide a power storage device including an explosion-proof mechanism that has high operational reliability and does not impair airtightness.