Acoustic signal is commonly generated in the thermal runaway process of lithium energy storage batteries. In order to understand the acoustic information of the lithium batteries, an experimental platform is designed to test the thermal runaway sound signals of different type of lithium blade batteries. The sound variance process of thermal runaway is recorded. Time-and-frequency-domain methods are used to analyze the acoustic characteristics of the batteries. It is found that thermal runaway can be detected with sound test method. The research result validates that acoustic method could be used as a new technology for early and ultra-early safety warning of lithium batteries, which is of great significance to the safe operation of energy storage stations.
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Xu et al. (2024) studied this question.
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