Title:
METHOD AND APPARATUS FOR DETECTING ANOMALY OF LITHIUM BATTERY, AND BATTERY MANAGEMENT SYSTEM AND BATTERY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/160212
Kind Code:
A1
Abstract:
Provided are a method and apparatus for detecting an anomaly of a lithium battery, and a battery management system and a battery system. The method comprises: acquiring an SOC value of a lithium battery during a charging process, wherein the SOC value is the ratio of the remaining capacity of the battery to the nominal capacity of the battery; changing the magnitude of a charging current at a moment corresponding to any SOC value, and acquiring a response signal within a duration in which the charging current changes; and according to response signals at moments corresponding to a plurality of SOC values, determining whether an anomaly occurs in the lithium battery. By means of the method, nondestructive detection of an anomaly of a lithium battery can be realized, the operation is simple, and the degree of accuracy is relatively high.
Inventors:
LIU ZHI (CN)
SHI DONGYANG (CN)
SHI DONGYANG (CN)
Application Number:
PCT/CN2021/074249
Publication Date:
August 04, 2022
Filing Date:
January 28, 2021
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
G01R31/36
Foreign References:
| CN111638461A | 2020-09-08 | |||
| CN103091636A | 2013-05-08 | |||
| CN109613436A | 2019-04-12 | |||
| CN110383570A | 2019-10-25 | |||
| CN111273180A | 2020-06-12 | |||
| CN111751741A | 2020-10-09 | |||
| US20090099802A1 | 2009-04-16 |
Other References:
See also references of EP 4063881A4
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