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:
Apr. 21, 2020
Filed:
Nov. 29, 2017
Applicant:
Yazaki Corporation, Tokyo, JP;
Inventors:
Assignee:
YAZAKI CORPORATION, Minato-ku, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/382 (2019.01); G06F 17/40 (2006.01); B60L 58/12 (2019.01); G01R 31/392 (2019.01); G01R 31/389 (2019.01);
U.S. Cl.
CPC ...
G01R 31/382 (2019.01); B60L 58/12 (2019.02); G01R 31/389 (2019.01); G01R 31/392 (2019.01); G06F 17/40 (2013.01); B60L 2240/12 (2013.01); B60L 2240/547 (2013.01); B60L 2240/549 (2013.01);
Abstract
Provided is a battery state detection device suitable for detecting a state of a battery mounted on a vehicle. A μCOM uses a first capacitor to measure a first sample of battery voltage, and after a predetermined standby time has elapsed, executes sample hold processing using the second capacitor for performing the second sample hold of the battery voltage. The μCOM detects the state of the battery based on the output of the differential amplifier when a condition is satisfied that the battery current is constant during both the first sample hold and the second sample hold and the battery current fluctuates during the standby time.