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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.:

US 12074293 B1

PDFFull Text
Date of Patent:
Aug. 27, 2024

Filed:

Sep. 09, 2021

Secondary battery including electrode with slit along winding direction in non-formation portion

Applicant:

Prime Planet Energy & Solutions, Inc., Tokyo, JP;

Inventors:

Masafumi Kadoi, Chita, JP;

Takahiro Sakurai, Nagoya, JP;

Kosuke Suzuki, Toyota, JP;

Assignee:

PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo, JP;

Attorney:

HAUPTMAN HAM, LLP

Primary Examiner:

Sean P Cullen

Int. Cl.
CPC ...
H01M 10/0585 (2010.01); H01M 4/13 (2010.01); H01M 4/36 (2006.01); H01M 10/0525 (2010.01); H01M 10/0587 (2010.01); H01M 50/103 (2021.01);
U.S. Cl.
CPC ...
H01M 10/0585 (2013.01); H01M 4/13 (2013.01); H01M 4/36 (2013.01); H01M 10/0587 (2013.01); H01M 50/103 (2021.01); H01M 10/0525 (2013.01);
Abstract

A secondary battery includes a flat wound electrode body in which an electrode sheet is wound, and an electrode terminal. The electrode sheet has a current collector, an electrode active material layer which is formed on a surface of the current collector, and a non-formation portion in which the electrode active material layer is not formed on the surface of the current collector. The wound electrode body has a first end portion in which a rounded portion is formed. A first slit is formed along a winding direction in the non-formation portion at the first end portion. A flat surface portion to which the electrode terminal is joined is provided in a portion positioned further toward opposite than the first slit from the electrode active material layer in a portion of the non-formation portion at the first end portion.

Find Patent Forward Citations

Kadoi, Masafumi. (2024). Secondary battery including electrode with slit along winding direction in non-formation portion (U.S. Patent No. 12074293). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12074293

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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