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电动汽车(EV)电池系统的性能和寿命受到温度的影响。为了把电池系统的平均温度控制在20℃到45℃范围内,同时把温度梯度控制在3℃内,该文设计了一种具有最优几何结构的液体冷却和加热板的电池热管理(BTM)系统。根据BTM系统的总体流量均衡,仿真模拟了不同结构参数的冷却板,研究其冷却效果。在电池系统加热实验中,利用红外热像仪检测了加热板的表面温升情况。试验结果与仿真结果显示出较好的一致性。研究发现:进出口在同一边的结构,流场均匀。利用联合优化仿真所得的进口速度和温度的最优组合,可以将加热板表面的温度标准差降低至2.61℃,使得电池系统获得均匀的加热。
The performance and lifetime of electric vehicle (EV) battery systems are affected by temperature. In order to control the average temperature of the battery system in the range of 20 ° C to 45 ° C while controlling the temperature gradient within 3 ° C, a battery thermal management system (BTM )system. According to the overall flow equilibrium of BTM system, the cooling plate with different structural parameters is simulated and its cooling effect is studied. In the battery system heating experiment, the use of infrared camera detected the heating plate surface temperature rise. The test results and the simulation results show a good consistency. The study found that: import and export in the same side of the structure, uniform flow field. By using the optimal combination of inlet velocity and temperature, the standard deviation of the temperature on the surface of the heating plate can be reduced to 2.61 ℃, which makes the battery system obtain uniform heating.