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:
Jun. 17, 2025
Filed:
Nov. 08, 2022
Applicant:
Calb Co., Ltd., Jiangsu, CN;
Inventors:
Ruijun Ma, Changzhou, CN;
Qiang Yun, Changzhou, CN;
Fangfang Pan, Changzhou, CN;
Kui Li, Changzhou, CN;
Assignee:
CALB Co., Ltd., Jiangsu, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/36 (2020.01); G01R 31/3842 (2019.01); G01R 31/389 (2019.01);
U.S. Cl.
CPC ...
G01R 31/3648 (2013.01); G01R 31/3842 (2019.01); G01R 31/389 (2019.01);
Abstract
A state of charge (SOC) determination method and apparatus for a battery system are disclosed. Based on a correspondence between impedance and SOC, a correspondence between OCV and SOC, and an operating current at a previous data collection moment, a correction coefficient at a current data collection moment can be determined. After the SOC estimated at the current data collection moment is corrected based on the correction coefficient, the accumulation of errors in the SOC can be eliminated, and the accuracy of the determined SOC is thereby improved.