Design and Optimization of Battery Liquid Cooling Plate Structure Based on Topology Optimization
The battery liquid-cooled plate structure was topologically optimized for different Reynolds numbers and fluid domain volume fractions with the maximum heat exchange as the objective function.The dimensionless mean temperature decreases with increasing Reynolds number and fluid domain volume fraction,and the flow channel becomes more refined.Three groups with the lowest topology-optimized average temperatures were selected for thermodynamic numerical simulation,and the maximum temperature,temperature standard deviation and inlet/outlet differential pressure were used as the evaluation indexes of the cooling performance of the cold plate.The results show that the topology-optimized cold plate has excellent heat dissipation performance.Among them,the topology-optimized structure with a Reynolds number of 125 and a volume domain fraction of 0.6 has the best performance,with a reduction of the maximum temperature by 3.99℃ ( 9.92％),the standard deviation drop of the temperature by 1.62℃ ( 49.62％),and the difference between the inlet and outlet pressures drop of 42.28 Pa (27.61％) compared to that of the conventional parallel flow channel..The optimal topology was used to build the battery cooling module.The results show that the maximum temperature of the battery pack is 34.39℃,and the standard deviation of the temperature is 1.83℃.The topology-optimized structure of the cold plate provides a good temperature environment for the stable operation of the battery.
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