液冷板分配流道结构参数对散热性能影响研究

Study on the Influence of Structure Parameters of Liquid Cooling Plate Distribution Channel on Heat Dissipation Performance

建立渐变的冷却液分配流道,利用计算流体力学的方法,分析进出水口布置方式、分配流道面积、分配流道上底与下底比例对液冷板散热性能的影响规律。结果表明:异侧布置方式比同侧布置方式的液冷板具有更低的电池最高温度和温差;4种分配流道面积中,1455 mm^(2)分配流道的液冷板下电池的最高温度最低,温差略高,整体冷却表现最好;随着分配流道面积从1455 mm^(2)增大至2425 mm^(2),电池的最高温度上升,温差稍有下降;随着分配流道上底与下底比例的增加,电池最高温度先下降后上升,温差逐渐增大,上底与下底比例为3:7的液冷板下电池最高温度为304.346 K,温差为3.302 K,综合冷却性能最优。

A gradual coolant distribution channel is established,and the influence of inlet and outlet layout,distribution channel area,and the proportion of upper and bottom of distribution channel on the heat dissipation performance of liquid cooling plate is analyzed by computational fluid dynamics method.The results show that the maximum temperature and temperature difference of the battery with different side arrangement are lower than those with the same side arrangement.Among the four distribution channel areas,the highest temperature of the battery under the liquid cooling plate with 1455 mm^(2) distribution channel is the lowest,the temperature difference is slightly higher,and the overall cooling performance is the best.With the increase of the distribution channel area from 1455 mm^(2) to 2425 mm^(2),the maximum temperature of the battery increases and the temperature difference slightly decreases.With the increase of the proportion of upper bottom and lower bottom of the distribution channel,the maximum temperature of the battery decreases first and then increases,and the temperature difference gradually increases.The maximum temperature of the battery under the liquid cooling plate with a ratio of 3:7 is 304.346 K,and the temperature difference is 3.302 K,which indicates that the comprehensive cooling performance is optimal.