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:
Sep. 01, 2026
Filed:
Apr. 18, 2024
GM Global Technology Operations Llc, Detroit, MI (US);
Jingyuan Liu, Shanghai, CN;
Dewen Kong, Shanghai, CN;
Si Chen, Shanghai, CN;
Meiyuan Wu, Shanghai, CN;
Haijing Liu, Shanghai, CN;
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A battery system includes a pressure sensor configured to sense pressure changes corresponding to thickness changes of at least one of a plurality of battery cells of a battery. A battery management module includes a state of charge (SOC) estimator configured to estimate the SOC of the battery. Based on sensed pressure, the SOC estimator detects at least one of a first inflection point and a second inflection point during one of charging and discharging of the battery, and calibrates the SOC of the battery based on at least one of a first SOC value and a second SOC value corresponding to the at least one of the first inflection point and the second inflection point, respectively.