Air-cooled battery thermal management system (BTMS) is usually employed to effectively dissipate heat and keep the battery temperature within a normal range. In this study, a new method was introduced to improve the cooling performance of the BTMS, the airflow distribution of the battery pack could be effectively improved by the proposal of parallel plate installation method. The cooling performance of nine original BTMSs was simulated and compared. Firstly, the parallel plate was added to the typical Z-type BTMS, the effect of the number of parallel plates on cooling performance of the battery pack was investigated. Then, four schemes of adding parallel plates were designed for each original BTMS, the cooling efficiency of all BMTSs was explored and compared. The results illustrated that the method adopted in this work could effectively improve the cooling efficiency of the BTMS. The results showed that compared to the typical Z-type BTMS, the maximum temperature and temperature difference of the BTMS with the best cooling performance were reduced by 3.42 K (6.26%) and 6.4 K (90.78%), respectively.

通常采用风冷电池热管理系统（BTMS）来有效散热并使电池温度保持在正常范围内。本研究引入了一种提高BTMS冷却性能的新方法，通过提出平行板安装方法可以有效改善电池组的气流分布。对九个原始 BTMS 的冷却性能进行了模拟和比较。首先，在典型的Z型BTMS中加入平行板，研究平行板数量对电池组冷却性能的影响。然后，为每个原始BTMS设计了四种增加平行板的方案，对所有BMTS的冷却效率进行了探索和比较。结果表明，本文采用的方法可以有效提高BTMS的冷却效率。结果表明，与典型的Z型BTMS相比，冷却性能最好的BTMS的最高温度和温差分别降低了3.42 K（6.26%）和6.4 K（90.78%）。