logo

For the Inventor, By the Inventor

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 10587014 B1

PDFFull Text
Date of Patent:
Mar. 10, 2020

Filed:

Dec. 11, 2015

Lithium ion secondary battery charging control method and charging mechanism

Applicant:

Maxell Holdings, Ltd., Otokuni-gun, Kyoto, JP;

Inventor:

Keiichi Tanii, Osaka, JP;

Assignee:

MAXELL HOLDINGS, LTD., Kyoto, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Drew A Dunn

Assistant Examiner:

Tessema Kebede

Int. Cl.
CPC ...
H01M 10/44 (2006.01); G01R 31/392 (2019.01); H02J 7/00 (2006.01); H01M 10/48 (2006.01); H02J 50/80 (2016.01); H02J 7/02 (2016.01); H02J 50/10 (2016.01); H01M 10/0525 (2010.01); H02J 7/06 (2006.01); H02J 7/14 (2006.01); G01R 31/3842 (2019.01); G01R 31/382 (2019.01); G01R 31/374 (2019.01);
U.S. Cl.
CPC ...
H01M 10/44 (2013.01); G01R 31/392 (2019.01); H01M 10/0525 (2013.01); H01M 10/48 (2013.01); H02J 7/007 (2013.01); H02J 7/0021 (2013.01); H02J 7/0031 (2013.01); H02J 7/0047 (2013.01); H02J 7/0072 (2013.01); H02J 7/0091 (2013.01); H02J 7/025 (2013.01); H02J 7/06 (2013.01); H02J 7/14 (2013.01); H02J 50/10 (2016.02); H02J 50/80 (2016.02); G01R 31/374 (2019.01); G01R 31/382 (2019.01); G01R 31/3842 (2019.01); H01M 10/443 (2013.01); H01M 10/486 (2013.01); H02J 7/0024 (2013.01); Y02T 10/7011 (2013.01); Y02T 10/7055 (2013.01);
Abstract

A charging control method and a charging mechanism for a lithium ion secondary battery are provided that can determine the life of the lithium ion secondary battery with more accuracy and a simple configuration. A charging control method for a lithium ion secondary battery calculates an integrated value of the number of charged times. The method includes: adding a predetermined value to the integrated value of the number of charged times of the lithium ion secondary battery if both a residual voltage that is a voltage value of the lithium ion secondary battery before the beginning of charging and an elapsed time from the time of the previous charging of the lithium ion secondary battery are not less than predetermined values; and estimating the life of the lithium ion secondary battery based on the integrated value of the number of charged times.

Find Patent Forward Citations

Loading…