The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Feb. 10, 2021
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Kenji Yamato, Osaka, JP;
Masao Ootsuka, Osaka, JP;
Abstract
A hermetically sealed battery includes: a battery can having a cylindrical shape with a bottom and an opening; an electrode body accommodated in the battery can; and a sealing plate sealing the opening of the battery can. The sealing plate has a first main surface facing an outside of the battery can and a second main surface opposite thereto. The sealing plate includes an outer peripheral portion having a flat plate shape, an inner peripheral portion having a flat plate shape, an inclined portion provided between the outer and inner peripheral portions. The inclined portion is inclined such that the inner peripheral portion is positioned on an outer side of the battery can than the outer peripheral portion. The inclined portion includes a thin portion and a thicker base portion. The thin portion and the base portion are arranged in a radial direction of the sealing plate.