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. 02, 2025
Filed:
Feb. 01, 2022
Applicant:
Prime Planet Energy & Solutions, Inc., Tokyo, JP;
Inventor:
Toshinori Okura, Toyota, JP;
Assignee:
PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 10/0525 (2010.01); H01M 10/44 (2006.01); H01M 10/48 (2006.01); H02J 7/00 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0525 (2013.01); H01M 10/446 (2013.01); H01M 10/486 (2013.01); H02J 7/0048 (2020.01);
Abstract
A lithium ion secondary battery includes a positive electrode and a negative electrode in which a positive-to-negative electrode capacity ratio between a positive capacity of the positive electrode and a negative capacity of the negative electrode is in a range of 1.02 to 1.40, and a negative electrode irreversible capacity of the negative electrode is larger than a positive electrode irreversible capacity of the positive electrode.