内腔油冷机壳自然风冷驱动电机冷却性能研究  

Research on cooling performance of natural air-cooled drive motor with internal oil-cooled chassis

作　　者：黄泽好[1,2] 谢彦景 张霄霆 曹永鹏 李东 HUANG Zehao;XIE Yanjing;ZHANG Xiaoting;CAO Yongpeng;LI Dong(Key Laboratory of Advanced Manufacturing Technology for Automobile Parts,Ministry of Education,Chongqing University of Technology,Chongqing 400054,China;School of Vehicle Engineering,Chongqing University of Technology,Chongqing 400054,China;Chongqing Tsingshan Industrial Co.,Ltd.,Chongqing 402761,China)

机构地区：[1]重庆理工大学汽车零部件先进制造技术教育部重点实验室,重庆400054 [2]重庆理工大学车辆工程学院,重庆400054 [3]重庆青山工业有限责任公司,重庆402761

出　　处：《工程设计学报》2024年第6期733-740,共8页Chinese Journal of Engineering Design

基　　金：重庆市教委科研项目(KJQN20181101);重庆市研究生导师团队项目(渝教研发[2018] 6号)。

摘　　要：针对车辆驱动用高功率密度、大扭矩、小体积永磁同步电机的传统风冷结构有效散热面积小,以及运行时因存在电磁损耗而导致内部各部件温度过高的问题,提出了一种内腔油冷、机壳自然风冷的油风混合冷却方式,以满足驱动电机内部各部件的温度性能要求。采用等效热网络法计算了不同工况下驱动电机定子绕组、定子、永磁体和转子的温度,得到驱动电机的最高温度出现在定子绕组处。随后,通过实验对驱动电机定子绕组端部的温度进行了测量并与仿真结果进行对比,仿真结果与实测结果的相对误差均在5%以内。结果表明,不同工况下油风混合冷却驱动电机定子绕组及其余各部件的温度下降明显且均满足温度性能要求,说明油风混合冷却方式的散热性能良好,冷却效率高。研究结果可为车用驱动电机散热系统的研制提供参考。Aiming at the problems of permanent magnet synchronous motors with high power density,large torque and small volume for vehicle driving,such as small effective heat dissipation area of traditional air-cooled structure and high temperature of internal components caused by electromagnetic loss during operation,an oil-air hybrid cooling method with natural air cooling of internal cavity oil-cooled chassis was proposed,to meet the temperature performance requirements of each component in the drive motor.The equivalent thermal network method was used to calculate the temperature of the stator winding,stator,permanent magnet and rotor in the drive motor under different working conditions,and the highest temperature of the drive motor appeared at the stator winding.Then,the temperature at the stator winding end of the drive motor was measured by experiment and compared with the simulation results.The relative error between the simulation results and the measured results was less than 5%.The results showed that the temperature of the stator winding and other components of the oil-air hybrid cooling drive motor under different working conditions dropped obviously and met the temperature performance requirements,which indicated that the oil-air hybrid cooling method had good heat dissipation performance and high cooling efficiency.The research results can provide reference for the development of heat dissipation systems for vehicle drive motors.

关 键 词：驱动电机 损耗 温度 油风混合冷却 冷却性能 

分 类 号：U469.72[机械工程—车辆工程]