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:
Jul. 15, 2025
Filed:
Dec. 05, 2022
Murata Manufacturing Co., Ltd., Kyoto, JP;
Toshikazu Nakamura, Kyoto, JP;
Koji Shibutani, Kyoto, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
Provided is a secondary battery, including: an electrode wound body having a structure in which a band-shaped positive electrode and a band-shaped negative electrode are stacked with a separator interposed therebetween and wound; and a battery can that accommodates the electrode wound body, wherein the positive electrode has a positive electrode active material layer on both sides of a band-shaped positive electrode foil, the negative electrode has a negative electrode active material layer on both sides of a band-shaped negative electrode foil, the electrode wound body has a positive electrode foil tab between a winding starting side and a winding ending side of the positive electrode and a negative electrode tab between a winding starting side and a winding ending side of the negative electrode, the positive electrode foil tab has a plate-like part joined on the winding starting side of the positive electrode, and a comb-like part protruding from the positive electrode, and the comb-like part is a connecting part of the electrode wound body.