期刊
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
卷 11, 期 6, 页码 5289-5301出版社
ESG
DOI: 10.20964/2016.06.66
关键词
Fault diagnosis; Lithium-ion battery; Extended Kalman filter; Incremental capacity analysis; Abusive tests
A fault diagnosis approach based on extended Kalman filter and incremental capacity analysis is proposed with fully understanding the internal failure mechanism of lithium-ion battery, which is extremely suitable for dynamic conditions. In order to detect and distinguish the fault modes and bridge fault symptoms with internal mechanisms, a serial of abusive experiments for over-discharge and low-temperature operation, which may commonly occur during battery applications, are arranged. Fault symptoms in form of electrical parameter variation are extracted as diagnosis basis. Furthermore, incremental capacity analysis is applied for isolation of the two similar faults. The diagnosis approach provides detailed description of symptoms and clear meaning of internal mechanisms. Postdisassembly analysis validates its reliability and effectiveness.
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