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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 10845420 B1

PDFFull Text
Date of Patent:
Nov. 24, 2020

Filed:

Jul. 20, 2017

Voltage detecting apparatus

Applicant:

Keihin Corporation, Tokyo, JP;

Inventor:

Seiji Kamata, Utsunomiya, JP;

Assignee:

KEIHIN CORPORATION, Tokyo, JP;

Attorney:

Cantor Colburn LLP

Primary Examiner:

Roy Y Yi

Assistant Examiner:

Geoffrey T Evans

Int. Cl.
CPC ...
G01R 31/392 (2019.01); G01R 31/382 (2019.01); G01R 31/396 (2019.01); H02J 7/00 (2006.01); B60L 58/21 (2019.01); H01M 10/42 (2006.01); H01M 10/48 (2006.01); G01R 31/3835 (2019.01); G01R 1/36 (2006.01); G01R 31/74 (2020.01); G01R 19/165 (2006.01); B60L 3/12 (2006.01); G01R 35/00 (2006.01);
U.S. Cl.
CPC ...
G01R 31/392 (2019.01); B60L 3/12 (2013.01); B60L 58/21 (2019.02); G01R 19/16542 (2013.01); G01R 31/382 (2019.01); G01R 31/396 (2019.01); H01M 10/4285 (2013.01); H01M 10/48 (2013.01); H02J 7/0021 (2013.01); H02J 7/0026 (2013.01); B60L 2240/547 (2013.01); B60L 2260/44 (2013.01); G01R 1/36 (2013.01); G01R 31/3835 (2019.01); G01R 31/74 (2020.01); G01R 35/00 (2013.01); H01M 2220/20 (2013.01); Y02T 10/70 (2013.01);
Abstract

A voltage detecting apparatus includes: a voltage detecting unit configured to detect a voltage of a battery supplying power to a load; a discharge circuit configured to discharge the battery; a protection circuit disposed between the voltage detecting unit and the battery and between the discharge circuit and the battery; and a determination unit configured to estimate an internal resistance of the protection circuit on the basis of a first voltage detected by the voltage detecting unit when the discharge circuit is in a non-operating state and a second voltage detected by the voltage detecting unit when the discharge circuit is in an operating state and determine a half-cut state of the protection circuit on the basis of a result of the estimation.

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