电动汽车锂离子电池模组冷却温度均匀性研究

On the Cooling Temperature Evenness of Lithium Ion Battery Module of Electric Vehicles

针对电动汽车锂电池充放电过程中的生热冷却现象,运用CATIA零件设计与装配功能建立单体电池模型及电池模组,然后利用CATIA创建冷却板模型;再使用ANSYS Workbench对电池模组进行网格划分,通过Fluent对电池模组的冷却进行模拟计算,并对冷却管路进行优化设计。模拟结果显示,冷却装置中的水流速度对电池冷却效果的影响较大,调整冷却板内的水管分布间距,有助于提高电池模组的冷却均匀性。

Aiming at the phenomenon of heat generation and cooling during the charging and discharging processes of lithium battery in electric vehicles,the single battery model and battery module are established by CATIA part design and assembly function,and then the cooling plate model is created through CATIA;then the battery module is meshed through ANSYS Workbench,the cooling of battery module simulated through Fluent,and the cooling pipeline optimized.The simulation results show that the water flow velocity in the cooling device has a great influence on the cooling effect of the battery.Adjusting the water pipe spacing in the cooling plate is helpful to improve the cooling uniformity of the battery module.