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:
Dec. 23, 2025
Filed:
Nov. 19, 2020
Sanyo Electric Co., Ltd., Kadoma, JP;
Takahiro Nogami, Osaka, JP;
PANASONIC ENERGY CO., LTD., Osaka, JP;
Abstract
The sealed battery according to the present disclosure is provided with: an electrode body including a negative electrode and a positive electrode having a positive electrode tab; a bottomed cylindrical exterior body for housing the electrode body; and a sealing body for sealing the opening portion of the exterior body via a gasket. The sealing body includes a metal valve body. The valve body has a peripheral edge portion and a reverse portion more protruding to the electrode body side than the peripheral edge portion. The positive electrode tab is led out from the electrode body, is connected to the reverse portion, and has a non-linear portion in a range surrounded by the electrode body and the reverse portion. The non-linear portion has a recess portion and a protrusion portion facing each other at both ends along the led-out direction of the positive electrode tab in a plan view.