公开(公告)号：US11777165B2

公开(公告)日：2023-10-03

申请号：US17498300

申请日：2021-10-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kota Shimizu ,  Takaaki Kassai ,  Kazumichi Shimizu ,  Shinya Geshi

IPC: H01M50/186 ,  H01M50/60

CPC classification number: H01M50/186 ,  H01M50/668

Abstract: A battery includes a metal battery can that has a tubular portion having an opening edge portion and a bottom portion; an electrode body that is in the battery can; an electrolytic solution that fills the battery can; and a sealing member that has an outer peripheral surface facing an inner peripheral surface of the opening edge portion of the tubular portion and is configured to seal the opening edge portion. A part of the inner peripheral surface of the opening edge portion and a part of the outer peripheral surface of the sealing member are joined by a melting portion, and a preventing portion is on the outer peripheral surface of the sealing member, the preventing portion being configured to prevent the electrolytic solution from rising toward a position, in which the melting portion is formed.