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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 12157373 B1

PDFFull Text
Date of Patent:
Dec. 03, 2024

Filed:

Sep. 16, 2022

Battery heater failure diagnostic device for vehicle

Applicant:

Mazda Motor Corporation, Hiroshima, JP;

Inventors:

Shinya Fujioka, Aki-gun, JP;

Atsushi Yoshimoto, Aki-gun, JP;

Yuki Ida, Aki-gun, JP;

Assignee:

Mazda Motor Corporation, Hiroshima, JP;

Attorney:

Alleman Hall & Tuttle LLP

Primary Examiner:

McDieunel Marc

Int. Cl.
CPC ...
B60L 58/27 (2019.01); B60L 3/00 (2019.01); G07C 5/08 (2006.01); H01M 10/46 (2006.01); H01M 10/48 (2006.01); H01M 10/615 (2014.01); H01M 10/625 (2014.01); H01M 10/63 (2014.01); H01M 10/657 (2014.01); H02J 7/00 (2006.01); H02J 7/04 (2006.01);
U.S. Cl.
CPC ...
B60L 3/0023 (2013.01); B60L 58/27 (2019.02); G07C 5/0808 (2013.01); H01M 10/46 (2013.01); H01M 10/482 (2013.01); H01M 10/615 (2015.04); H01M 10/625 (2015.04); H01M 10/63 (2015.04); H01M 10/657 (2015.04); H02J 7/0047 (2013.01); H02J 7/04 (2013.01); B60L 2240/547 (2013.01); B60L 2240/549 (2013.01); H01M 2220/20 (2013.01); H02J 2207/10 (2020.01);
Abstract

To provide a battery heater failure diagnostic device for a vehicle capable of diagnosing failure of a battery heater with a high degree of accuracy, a battery output sensor capable of detecting a battery output value that is a current value or a voltage value of a battery is provided. When a specified failure diagnosis condition is satisfied, a first control for stopping actuation of a battery heater and at least one non-heater device and a second control for actuating the battery heater while maintaining a stop of the actuation of the at least one non-heater device after execution of the first control are executed. The failure of the battery heater is diagnosed based on battery output values detected by the battery output sensor during execution of the first control and during execution of the second control.

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