基于拓扑优化技术新能源电动汽车电池包液冷板散热流道分析

Analysis of Heat Dissipation Channel of Liquid Cooling Plate of Battery Pack for New Energy Electric Vehicle Based on Topology Optimization Technology

摘要: 针对目前新能源电动汽车电池包液冷板散热流道多侧重于流道拓扑优化算法的理论研究，对流道形态、散热性能之间的关系阐明不足。本文从工程应用角度出发，基于变密度法，研究基于结构拓扑优化技术的液冷板流道设计方法，并将传统液冷板流道与拓扑优化得到的不同雷诺数下的液冷板的均温性能以及最大温差进行散热对比。仿真分析表明，无论是平均温度还是温差，拓扑优化出来的流道比传统S型流道均温性以及散热性都要好。

Abstract: In view of the current new energy electric vehicle battery pack liquid cooling plate heat dissipation channel, most of the focus is on the theoretical research of flow channel topology optimization algo-rithm, and the relationship between flow channel form and heat dissipation performance is insuffi-cient. From the perspective of engineering application, this paper studies the design method of liq-uid cooled plate runner based on structural topology optimization technology based on variable density method, and compares the heat dissipation between traditional liquid cooled plate runner and the liquid cooled plate under different Reynolds number and the maximum temperature dif-ference obtained by topology optimization. Simulation analysis shows that the flow channel opti-mized by topology is better than the traditional S-shaped flow channel in both average temperature and temperature differences.