双水道液冷永磁同步电机散热特性分析  

Analysis of heat dissipation characteristics of double channel liquid cooled permanent magnet synchronous motor

作　　者：李晓艺 唐志国[2] 张丹阳 周嘉 闵小滕 LI Xiaoyi;TANG Zhiguo;ZHANG Danyang;ZHOU Jia;MIN Xiaoteng(New Energy Automotive Engineering Research Institute,Hefei University of Technology,Hefei 230009,China;School of Me chanical Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学新能源汽车工程研究院,安徽合肥230009 [2]合肥工业大学机械工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2018年第6期726-730,共5页Journal of Hefei University of Technology：Natural Science

基　　金：国家科技支撑计划资助项目(2014BAG06B02);合肥市科技计划资助项目(KX201506230108)

摘　　要：根据电动汽车用永磁同步电机的高热流密度散热需求,文章提出了一种互逆轴向双水道液冷散热结构,建立了液冷散热结构的电机模型;采用有限体积法对不同参数下的液冷结构进行了流场和温度场的耦合分析,并与实验数据进行了对比,结果表明双水道液冷结构比单水道液冷结构的温度分布更均匀,且冷却效果好。该文进一步分析了双水道液冷的结构参数、冷却液流量、接触热阻对电机散热特性的影响,为电机的高效散热设计提供了一定的参考。According to the cooling demand of high heat flux density of permanent magnet synchronous motor（PMSM）for electric vehicle,a reciprocal liquid cooling structure with axial double channel is proposed.The motor model is established for the liquid cooling structure.The fluid-thermal coupling analysis of the cooling structure under different parameters is performed by the finite volume method and the results are compared with the experimental data.The results show that the temperature distribution of double channel liquid cooling structure is more uniform and the cooling effect is better than that of the single channel.The influence of structure parameters,coolant flow and thermal contact resistance of double channel liquid cooling on the motor heat dissipation characteristics is analyzed,which provides a reference for the efficient heat sink design of the motor.

关 键 词：永磁同步电机 双水道 液冷 散热特性 

分 类 号：TM351[电气工程—电机]