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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 10976373 B1

PDFFull Text
Date of Patent:
Apr. 13, 2021

Filed:

Feb. 05, 2019

Lead acid battery device, control device for lead acid battery, and control method for lead acid battery

Applicant:

Fuji Electric Co., Ltd., Kanagawa, JP;

Inventors:

Takaharu Ohkanda, Ichihara, JP;

Kazuyuki Yoda, Kobe, JP;

Hiroshi Takano, Ichihara, JP;

Assignee:

FUJI ELECTRIC CO., LTD., Kanagawa, JP;

Attorney:
Primary Examiner:

Son T Le

Int. Cl.
CPC ...
G01R 31/389 (2019.01); H01M 10/44 (2006.01); H01M 10/48 (2006.01); H02J 7/34 (2006.01); H02J 9/06 (2006.01); G01R 31/379 (2019.01); H02J 7/00 (2006.01); G01R 31/396 (2019.01); G01R 31/3842 (2019.01); G01R 19/165 (2006.01);
U.S. Cl.
CPC ...
G01R 31/389 (2019.01); G01R 19/16542 (2013.01); G01R 31/379 (2019.01); G01R 31/3842 (2019.01); G01R 31/396 (2019.01); H01M 10/44 (2013.01); H01M 10/48 (2013.01); H02J 7/00711 (2020.01); H02J 7/34 (2013.01); H02J 9/06 (2013.01);
Abstract

A lead acid battery device includes a lead acid battery, a charge control unit to charge the lead acid battery by alternately and repeatedly performing high voltage charging, in which a pulsed high voltage is applied to the lead acid battery, and low voltage charging, in which a low voltage lower than the high voltage is applied to the lead acid battery, and an internal resistance calculation unit to calculate an internal resistance of the lead acid battery based on the voltage difference and the current difference of the lead acid battery between a condition at which the pulsed high voltage is applied and a condition at which the pulsed high voltage is not applied.

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