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:
May. 27, 2025
Filed:
Jan. 22, 2021
Tongji University, Shanghai, CN;
Haifeng Dai, Shanghai, CN;
Xuezhe Wei, Shanghai, CN;
Xueyuan Wang, Shanghai, CN;
Guangxu Zhang, Shanghai, CN;
TONGJI UNIVERSITY, Shanghai, CN;
Abstract
The present disclosure provides a method for diagnosing an internal short circuit of a battery based on a relaxation voltage, including: 1) acquiring a relaxation voltage curve of each cell in a battery after a current is unloaded under same conditions of the battery; 2) extracting features from the relaxation voltage curve of each cell to obtain corresponding curve features; and 3) determining whether the internal short circuit occurs in the cell according to curve features, thereby completing diagnosis. The present disclosure has the advantages of short detection time and high accuracy over the prior art.