基于浮动映射法的动力电池包散热结构设计  

Heat Dissipation Design of Power Battery Pack Structure Based on FPTO Method

作　　者：黄登峰 周顺顺 闫晓磊 查云飞 Huang Dengfeng;Zhou Shunshun;Yan Xiaolei;Zha Yunfei(Fujian University of Technology,Fuzhou 350118;Fujian Key Laboratory of Automotive Electronics and Electric Drive,Fuzhou 350118)

机构地区：[1]福建理工大学,福州350118 [2]福建省汽车电子与电驱动重点实验室,福州350118

出　　处：《汽车技术》2024年第7期37-43,共7页Automobile Technology

基　　金：福建省自然科学基金项目(2022J01921)。

摘　　要：针对电动汽车运行过程中,电池温度呈现中间高、四周低的分布,从而影响电池使用寿命的问题,以几何平均温度为目标函数,提出基于浮动映射拓扑优化的稳态热传导结构设计方法,通过算例对比分析了单工况和多工况动力电池包的最高温度及温差。分析结果表明,所得到的拓扑构型在多工况时可以有效降低散热过程中的最高温度和温差,使温度分布均匀。最后将该方法运用到动力电池包支撑结构中,结果表明,该方法在有效降低温度的同时,不增加电池包结构的体积,优化了材料的分布,实现了电池包整体结构的轻量化。As the battery temperature shows a high distribution in the middle and low distribution around during the operation of electric vehicles,it affects the battery service life.To this end,a steady-state heat conduction structure design method based on Floating Projection Topology Optimization(FPTO)is proposed using the geometric mean temperature as the objective function,and the maximum temperature and temperature difference of the power battery pack under single and multiple operating conditions are comparatively analyzed by means of an arithmetic example,which demonstrates that the obtained topological configuration can effectively reduce the maximum temperature and temperature difference in the heat dissipation process during the multiple operating conditions,so as to make the temperature distribution uniform.Finally,the method is applied to the power battery pack support structure,and the results show that the method effectively reduces the temperature without increasing the volume of the battery pack structure,optimizes the distribution of materials,and realizes lightweight of the overall structure of the battery pack.

关 键 词：浮动映射法 拓扑优化 动力电池包散热 轻量化 

分 类 号：TU318[建筑科学—结构工程]