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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 12352788 B1

PDFFull Text
Date of Patent:
Jul. 08, 2025

Filed:

Apr. 29, 2021

Thermal runaway prognosis by detecting abnormal cell voltage and soc degeneration

Applicant:

GM Global Technology Operations Llc, Detroit, MI (US);

Inventors:

Yue-Yun Wang, Troy, MI (US);

Andrew C. Baughman, Northville, MI (US);

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);

Attorney:

CANTOR COLBURN LLP

Primary Examiner:

John T Trischler

Int. Cl.
CPC ...
G01R 31/36 (2020.01); G01R 19/00 (2006.01); G01R 19/165 (2006.01); G01R 31/3835 (2019.01); G01R 31/389 (2019.01); G01R 31/392 (2019.01); G01R 31/396 (2019.01); H01M 10/44 (2006.01); H01M 10/48 (2006.01); H02J 7/00 (2006.01); B60L 3/00 (2019.01); G01R 29/04 (2006.01); G01R 31/367 (2019.01); G01R 31/374 (2019.01); H01M 10/42 (2006.01);
U.S. Cl.
CPC ...
G01R 19/003 (2013.01); G01R 19/16528 (2013.01); G01R 31/3648 (2013.01); G01R 31/3835 (2019.01); G01R 31/389 (2019.01); G01R 31/392 (2019.01); G01R 31/396 (2019.01); H01M 10/441 (2013.01); H01M 10/48 (2013.01); H01M 10/482 (2013.01); H02J 7/0014 (2013.01); H02J 7/0047 (2013.01); B60L 3/0046 (2013.01); B60L 3/0069 (2013.01); G01R 29/04 (2013.01); G01R 31/367 (2019.01); G01R 31/374 (2019.01); H01M 2010/4271 (2013.01); H01M 2220/20 (2013.01); H02J 7/00309 (2020.01); H02J 7/0048 (2020.01);
Abstract

A vehicle, system and method for monitoring an occurrence of thermal runaway in a battery pack of the vehicle. The system includes a plurality of voltage sensors and a processor. The plurality of voltage sensors obtains a plurality of voltage measurements at each of a plurality of battery cells of the battery pack. The processor is configured to determine a mean value based on the plurality of voltage measurements, compare a voltage measurement obtained from a selected battery cell to the mean value, and generate a notification signal when a difference between the voltage measurement from the selected battery cell and the mean value is greater than or equal to a prognostic threshold.

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