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. 23, 2026
Filed:
Aug. 11, 2025
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Xu Liang, Ningde, CN;
Shichang Zhang, Ningde, CN;
Yanmin Xie, Ningde, CN;
Zhu Yuan, Ningde, CN;
Shan Huang, Ningde, CN;
Lei Huang, Ningde, CN;
Haili Li, Ningde, CN;
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde City, CN;
Abstract
A method and apparatus for estimating a state of charge of a lithium iron phosphate battery are described. The implementation solution of the method for estimating a state of charge of a lithium iron phosphate battery is: acquiring the temperature of the current time period and an SOC-OCV curve under the current of the current time period; determining, on the basis of the state of charge of the SOC-OCV curve, a correction point of the SOC-OCV curve; and correcting, on the basis of a combination of at least one temperature and at least one current, the SOC-OCV curve at the correction point, and updating the SOC-OCV curve.
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