针对锂动力电池在放电过程中的散热问题，建立基于某三元锂电池模组的生热模型，仿真分析并试验探究了电池模组在不同放电倍率下的发热情况。在验证模组生热模型正确的前提下，结合模组发热具体情况，设计U型液冷管道并建立电池模组的液冷模型，比较了不同参数的冷却液介质和不同温度的冷却液对锂电池组冷却性能的影响。研究表明：设计的U型管道能够满足电池组冷却散热需求，导热系数大且温度较低的冷却介质散热效果更好。

To solve the heat radiation problem of lithium ion power battery in the discharge process, a thermal model was established based on a ternary battery module. The rise of module temperature was simulated and analyzed experimentally under different discharge rates. The U-shaped liquidcooled pipeline was designed and the liquidcooled model of battery module was established by combining with the actual heat problem after verifying the accuracy of thermal model. The comparison was then conducted between different cooling mediums and different cooling temperatures to analyze the cooling performance of lithium ion battery module. The research shows that the U-shaped liquid-cooled pipeline can meet the cooling and heat dissipation requirements of battery module. Coolant with high thermal conductivity and low temperature has better cooling performance.