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. 02, 2024
Filed:
Jul. 16, 2021
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Inventors:
Aiko Nagano, Nisshin, JP;
Mamoru Mizutani, Nagakute, JP;
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/388 (2019.01); G01R 31/389 (2019.01); H01M 10/0525 (2010.01); H01M 10/48 (2006.01);
U.S. Cl.
CPC ...
G01R 31/388 (2019.01); G01R 31/389 (2019.01); H01M 10/486 (2013.01); H01M 10/0525 (2013.01);
Abstract
A durability evaluation method of a secondary battery includes a durability step of continuing to apply an alternating current voltage of a durability frequency to a first secondary battery for evaluation over a durability test period, and an evaluation step of evaluating durability of an associated battery reaction associated with the durability frequency from among battery reactions of the first secondary battery. A temperature and a state of charge of the first secondary battery are adjusted to a first temperature and a first state of charge, respectively.