Study Investigates Battery Thermal Management and Safety under Fast Charging Modes

Xia Guo(Southwest Jiaotong University)
Xu Jinzhu(Southwest Jiaotong University)
Rui Huang(Southwest Jiaotong University)

Abstract

This study investigates battery thermal management and safety under fast charging modes, addressing the critical challenge of excessive heat generation during high-power charging. An experimental platform was established to simulate battery charging processes at varying fast charging power levels, with real-time monitoring of temperature distribution, heat generation rates, voltage, and current. Comparative analyses of liquid cooling and air cooling strategies were conducted to evaluate their effectiveness in mitigating thermal risks. Results demonstrated that liquid cooling exhibited superior temperature control at higher charging power levels, reducing peak temperatures by 15–20% compared to air cooling, while air cooling proved sufficient for moderate power scenarios. Case studies on electric vehicles under actual fast charging conditions further validated the performance differences between these strategies. The findings underscore the necessity of optimizing thermal management solutions based on charging power requirements to ensure battery safety and longevity. This research provides actionable insights for designing efficient thermal management systems in fast-charging electric vehicles.

Keywords

Fast charging, Battery thermal management, Liquid cooling, Air cooling, Battery safety

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Author Profile: Guo Xia, male, born in March 1998, of Han ethnicity, from Nanchong, Sichuan Province. Currently pursuing a doctoral degree, specializing in tram charging research.

DOI: http://dx.doi.org/10.26549/met.v9i3.33201