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. 04, 2025
Filed:
Feb. 02, 2021
Sanyo Electric Co., Ltd., Kadoma, JP;
Shuji Sugimoto, Hyogo, JP;
Takahiro Fukuoka, Tokushima, JP;
Kazuhiko Watanabe, Osaka, JP;
Toshihiko Mori, Shiga, JP;
PANASONIC ENERGY CO., LTD., Osaka, JP;
Abstract
The cylindrical battery includes: an electrode body in which a positive electrode plate and a negative electrode plate are wound with a separator therebetween: an electrolyte; a bottomed cylindrical outer can that houses the electrode body and the electrolyte; and a sealing body that closes an opening of the outer can, wherein the sealing body includes a rupture plate that is caulked and fixed to the opening of the outer can with a gasket therebetween, and an external terminal that is not caulked and fixed to the opening of the outer can, the rupture plate has a valve part that is ruptured when an internal battery pressure rises, and the external terminal is fixed to an upper surface portion of a valve part.