ABSTRACT

The thermal management system of battery pack was investigated based on the combination of two different phase change materials OM35 and Paraffin wax coupled with forced air cooling to maintain the thermal distribution in the battery pack at a discharge rate of 1C. Numerical investigations were carried out by computational fluid dynamics (CFD) to understand the effects of battery thermal characteristics on environmental conditions in different cities of India. Furthermore, the thermal behavior of the system in an active and passive cooling was analyzed. The result indicates that active cooling can reduce the temperature rise in the battery pack by 2.8°C in the discharge cycle. The above studies identified active cooling not always required when the vehicle speed increases above 40 km/h. Environmental conditions during summer have a significant impact on the temperature rise in the battery pack.

摘要

基于两种不同的相变材料 OM35 和石蜡的组合以及强制空气冷却以将电池组中的热分布保持在 1C 的放电速率，研究了电池组的热管理系统。通过计算流体动力学 (CFD) 进行数值研究，以了解电池热特性对印度不同城市环境条件的影响。此外，分析了系统在主动和被动冷却中的热行为。结果表明，主动冷却可以使电池组在放电循环中的温升降低2.8°C。上述研究表明，当车速超过 40 公里/小时时，并不总是需要主动冷却。