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:
Apr. 02, 2024
Filed:
Jan. 25, 2019
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Masahiro Soga, Osaka, JP;
Taisuke Yamamoto, Nara, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/133 (2010.01); H01M 4/02 (2006.01); H01M 4/131 (2010.01); H01M 4/134 (2010.01); H01M 10/0525 (2010.01); H01M 10/44 (2006.01); H01M 10/48 (2006.01);
U.S. Cl.
CPC ...
H01M 4/133 (2013.01); H01M 4/131 (2013.01); H01M 4/134 (2013.01); H01M 10/0525 (2013.01); H01M 10/44 (2013.01); H01M 10/48 (2013.01); H01M 2004/027 (2013.01);
Abstract
A charging method of a non-aqueous electrolyte secondary battery involves a first charging step in which, defining x as the ratio of the capacity of a silicon compound to the rated capacity Q (0.1≤x≤0.5), charging is performed at a first fixed current value I1st that satisfies the expression below; and a high current charging step in which after completion of the first charging step, charging is performed at a fixed current value Ihigher than the first fixed current value I1.