Fault evolution mechanism for lithium-ion battery energy storage system under multi-levels and multi-factors

The current research of battery energy storage system (BESS) fault is fragmentary, which is one of the reasons for low accuracy of fault warning and diagnosis in monitoring and controlling system of BESS. The paper has summarized the possible faults occurred in BESS, sorted out in the aspects of inducement, mechanism and consequence. Especially for module level, we have highlighted fault evolution law under component defects, external abuse and extreme conditions. The review has completed the law of fault evolution of BESS under multi system level and multi-factors. The purpose of the paper is to present the comprehensive research on various failure inducements of BESS in recent years, laying a theoretical foundation for fault mechanism modeling, advance warning and accurate fault diagnosis.