Preventing thermal runaway propagation is critical to improve the fire safety of electric vehicles. Experiments are conducted on the designed battery modules to study the effects of aerogel, liquid cooling plate, and their combination on the prevention mechanism of thermal runaway propagation. The characteristics of temperature, voltage, mass loss, and venting during the thermal runaway propagation process are compared and analyzed. The results indicate that: (1) adding the insulation material of aerogel can postpone the thermal runaway propagation, but may not completely cut-off the propagation process; (2) there is no obvious delay of thermal runaway propagation by adding the liquid cooling plate only, the propagation speed may be accelerated instead; (3) the thermal runaway propagation can be prevented by using aerogel and liquid cooling plate together. The study reminds us that safety design of battery thermal management system should consider the comprehensive heat transfer pathways in order to effectively prevent thermal runaway propagation.

中文翻译：

---

气凝胶与液冷板联用防止锂离子电池模块热失控传播的实验研究

防止热失控传播对于提高电动汽车的消防安全至关重要。对设计的电池模块进行了实验，研究了气凝胶、液冷板及其组合对热失控传播阻止机制的影响。对比分析了热失控传播过程中的温度、电压、质量损失和排气等特性。结果表明：（1）添加气凝胶保温材料可以延缓热失控传播，但不能完全阻断传播过程；(2)仅增加液冷板，热失控传播没有明显延迟，反而可以加快传播速度；(3)气凝胶和液冷板一起使用可以防止热失控传播。该研究提醒我们，电池热管理系统的安全设计应考虑综合传热途径，以有效防止热失控传播。