为了解决传统空气冷却系统散热效率不足的问题，通过实验方法将喷雾蒸发过程与强制空气冷却相结合，强化电池热管理系统的散热效率。建立了基于热管阵列/喷雾冷却复合结构的电池组散热系统，对比了不同冷却措施的散热性能，研究了入口风速、喷雾频率及喷雾占空比对系统散热性能的影响规律。结果表明：复合温控结构在1 C倍率下可完全抑制电池组升温，在3 C倍率下可将电池组平均温度维持在41 ℃左右；采用10 s喷雾周期进行冷却可将电池组平均温度降低2 ℃，喷雾频率的增加可显著降低电池温度波动。

To solve the problem of insufficient heat dissipation efficiency of traditional aircooling system, this paper combined the spray evaporation process with forced air cooling by experimental method, which strengthened the heat dissipation efficiency of battery thermal management system. A battery pack cooling system based on heat pipe array/spray cooling composite structure was established. The heat dissipation performance of different cooling approaches was compared. Then, the effects of inlet wind speed, spray frequency and spray duty cycle ratio on cooling performance of the system were studied. The results show that the composite structure for temperature control can not only completely restrain the temperature rise of the battery pack under 1C discharge rate, but also maintain the average temperature of the battery pack at about 41 ℃ under 3C discharge rate; the opening time of spray every 10 s during the spray working cycle reduces 2 ℃ temperature reduction for the whole battery pack. The increase of the spray frequency can reduce the temperature fluctuation of the battery.

TK02

山西省科技计划揭榜招标项目（202001101014）