公开(公告)号：US20220166094A1

公开(公告)日：2022-05-26

申请号：US17440224

申请日：2020-01-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIDEYUKI UEDA ,  SUGURU MATSUMURA

IPC: H01M50/171 ,  H01M10/0587 ,  H01M50/152

Abstract: A battery comprising: a case having an opening at one end and a bottom at the other end. The case including a cylindrical side surface, an electrode group accommodated in the case together with an electrolytic solution, a cap that seals the opening of the case, and a gasket disposed between the opening of the case and the cap. The case includes an annular groove protruding inward of the case in a part of the cylindrical side surface. The gasket includes a seal accommodating the cap and a cylindrical part extending from the seal toward the electrode group. The cylindrical part of the gasket and a deepest groove of the case have portions in contact with each other, and a contact of the gasket is compressed by the deepest groove of the case.

公开(公告)号：US20240154264A1

公开(公告)日：2024-05-09

申请号：US18549913

申请日：2022-02-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKAHIRO INOUE ,  YASUNOBU KODAMA ,  HIDEYUKI UEDA

IPC: H01M50/533 ,  H01M50/107 ,  H01M50/184 ,  H01M50/188 ,  H01M50/536

CPC classification number: H01M50/533 ,  H01M50/107 ,  H01M50/184 ,  H01M50/188 ,  H01M50/536

Abstract: The disclosed battery includes a cylindrical side surface, a case including an opening and a bottom, an electrode group housed in the case together with an electrolytic solution and including a first electrode and a second electrode, and a first end part electrically connected to the first electrode, a first lead welded to the cylindrical side surface, a cap for sealing an opening, and a gasket provided between the opening and the cap. A part of the cylindrical side surface is provided with a groove for compressing a part of the gasket. The gasket includes a cylindrical part that is continuous with a compression part and that extends toward the bottom. The first lead is not placed between the cylindrical side surface and the compression part, and is in contact with the cylindrical part. The second end part of the first lead is positioned closer to the opening than the electrode group.