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:
Mar. 22, 2016
Filed:
Sep. 03, 2014
Applicant:
Sanyo Electric Co., Ltd., Osaka, JP;
Inventor:
Akihiko Yamada, Osaka, JP;
Assignee:
SANYO ELECTRIC CO., LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/416 (2006.01); G01R 31/36 (2006.01); H01M 10/48 (2006.01); H02J 7/00 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
G01R 31/361 (2013.01); G01R 31/3624 (2013.01); G01R 31/3644 (2013.01); H01M 10/48 (2013.01); H02J 7/0086 (2013.01); G01R 31/3662 (2013.01); H01M 10/0525 (2013.01); H02J 2007/005 (2013.01);
Abstract
After discharging has been stopped, a transient response component of the voltage remaining in the cell unit is calculated as an initial remaining voltage value (V) from the difference between the measured voltage value (CCV[t]) and the open-circuit voltage value (OCV[t]). The open-circuit voltage value is thereafter estimated on the basis of the initial remaining voltage value, a predetermined time constant, and the measured voltage value during the interval in which discharge is stopped, with consideration given to the fact that the transient response component attenuates with a predetermined time constant.