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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 10436847 B1

PDFFull Text
Date of Patent:
Oct. 08, 2019

Filed:

Sep. 30, 2016

Secondary battery state detection device and secondary battery state detection method

Applicants:

Furukawa Electric Co., Ltd., Tokyo, JP;

Furukawa Automotive Systems Inc., Shiga, JP;

Inventors:

Noriyasu Iwane, Tokyo, JP;

Naoya Takashima, Tokyo, JP;

Taiji Mitsuyama, Tokyo, JP;

Assignees:

FURUKAWA ELECTRIC CO., LTD., Tokyo, JP;

FURUKAWA AUTOMOTIVE SYSTEMS INC., Shiga, JP;

Attorney:

Amin, Turocy & Watson, LLP

Primary Examiner:

Minh N Tang

Int. Cl.
CPC ...
G01N 27/416 (2006.01); G01R 31/367 (2019.01); G01R 31/374 (2019.01); G01R 31/378 (2019.01); G01R 31/389 (2019.01); G01R 31/3842 (2019.01); H01M 10/48 (2006.01); H02J 7/00 (2006.01); H01M 10/42 (2006.01); B60L 53/80 (2019.01); B60L 58/16 (2019.01);
U.S. Cl.
CPC ...
G01R 31/367 (2019.01); B60L 53/80 (2019.02); B60L 58/16 (2019.02); G01R 31/374 (2019.01); G01R 31/378 (2019.01); G01R 31/389 (2019.01); G01R 31/3842 (2019.01); H01M 10/4285 (2013.01); H01M 10/48 (2013.01); H01M 10/486 (2013.01); H02J 7/0047 (2013.01); B60L 2240/545 (2013.01); B60L 2240/547 (2013.01); B60L 2240/549 (2013.01); H01M 2220/20 (2013.01); Y02T 10/705 (2013.01); Y02T 10/7011 (2013.01); Y02T 10/7016 (2013.01); Y02T 10/7072 (2013.01); Y02T 90/124 (2013.01); Y02T 90/14 (2013.01);
Abstract

Described herein are techniques to accurately detect that a secondary battery has been replaced. A secondary battery state detecting device detects a state of a secondary battery installed in a vehicle. The device includes a control unit that learns element values of an equivalent circuit of the secondary battery on the basis of a voltage and a current of the secondary battery. The control unit also compares the element values obtained through learning at different timings and, when at least one of the element values has changed more than or equal to a predetermined threshold value, determines that the secondary battery has been replaced.

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