Analysis of Acoustic Characteristics under Battery External Short Circuit Based on Acoustic Emission

Nan Zhou, Xiulong Cui, Changhao Han and Zhou Yang
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Nan Zhou: School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
Xiulong Cui: School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
Changhao Han: School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Zhou Yang: School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China

Energies, 2022, vol. 15, issue 5, 1-16

Abstract: The safety of power batteries has received more and more attention in promoting electric vehicles. The external short circuit is particularly prominent as an abnormal and harmful event of a battery, and the exploration of in-situ low-cost detection technology for such an event is the starting point of this paper. By building an experimental bench that could detect the external short circuit of the battery and obtain the acoustic, electrode, and temperature responses, the resulting acoustic analysis would establish an internal connection with the electrode and temperature measurement when the external short circuit occurs. The respective acoustic response characteristics of different initial battery states of charge were analyzed by selecting appropriate acoustic characteristic parameters in the time and frequency domains. The acoustic measurement could represent the battery abnormality synchronously like the electrode measurement, and the results of the damage and rearrangement of the internal of the battery are easy to characterize through a moderate amplification of the acoustic response. The different initial state of charge (SOC) state reflects noticeable differences in the acoustic characteristics. Therefore, it is considered that the acoustic emission technology might have potential battery condition assessment capabilities and be a tool for in-situ battery fault diagnosis.

Keywords: lithium-ion battery; acoustic emission; state of charge; external short circuit; acoustic characteristic (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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