MULTI-LEVEL ON-LINE SAFETY ASSESSMENT OF RECONFIGURABLE ENERGY STORAGE SYSTEM USING SECONDARY BATTERIES RISK WARNING POSTITIONING METHOD

Yu Lu; Zhang Hui; Tian Peigen; Xiao Xi; Wu Yan; Zhang Kai

doi:10.19912/j.0254-0096.tynxb.2022-0309

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (5) : 461-467. DOI: 10.19912/j.0254-0096.tynxb.2022-0309

MULTI-LEVEL ON-LINE SAFETY ASSESSMENT OF RECONFIGURABLE ENERGY STORAGE SYSTEM USING SECONDARY BATTERIES RISK WARNING POSTITIONING METHOD

Yu Lu¹, Zhang Hui¹, Tian Peigen², Xiao Xi², Wu Yan³, Zhang Kai⁴

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Abstract

In order to improve the safety of secondary batteries reconfigurable energy storage system, a corresponding multi-level online safety evaluation method is proposed. Based on the voltage and temperature data of the battery monomer and module monitored in real time, this method establishes the safety evaluation model of the battery and module, and quantitatively evaluates the battery electrothermal safety by the entropy weight TOPSIS method. The safety evaluation method can quantify the safety status of the reconfigurable energy storage system using retired power batteries from different manufacturers, batches or types online, so that it can realize the secondary safety early warning of modules and monomers according to the evaluation results, and complete the safety risk positioning of modules and monomers. According to the online safety evaluation results, the topology reconstruction, energy scheduling and temperature management of the secondary batteries energy storage system can operate in time. Hence, this proposed method can effectively improve the safety of the system, promoting the large-scale application of secondary batteries and the large-scale construction of the secondary batteries energy storage system with the practical needs.

Key words

reconfigurable architectures / secondary batteries / risk management / energy storage / system TOPSIS

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Yu Lu, Zhang Hui, Tian Peigen, Xiao Xi, Wu Yan, Zhang Kai. MULTI-LEVEL ON-LINE SAFETY ASSESSMENT OF RECONFIGURABLE ENERGY STORAGE SYSTEM USING SECONDARY BATTERIES RISK WARNING POSTITIONING METHOD[J]. Acta Energiae Solaris Sinica. 2022, 43(5): 461-467 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0309

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