Mitigating thermal runaway in EV batteries using hybrid energy storage and phase change materials

Electric vehicles (EVs) are increasingly recognized as a sustainable solution for modern transportation; however, effective thermal management of their battery systems is essential to ensure safety, reliability, and optimal performance. This review examines advanced strategies for preventing thermal runaway in EV battery systems, with a focus on innovative thermal management techniques. It introduces various battery chemistries suitable for different applications and highlights key thermal control methods, including the use of phase change materials (PCMs), heat sinks, and hybrid energy storage systems (HESS). Particular attention is given to HESS as a novel approach that integrates battery packs with metal-hydride tanks for improved thermal regulation. Furthermore, the paper presents a comprehensive analysis of different battery thermal management system (BTMS) configurations, emphasizing their critical role in enhancing both the safety and operational efficiency of electric vehicles.