摘要
针对高功率密度电动汽车驱动电机存在严重的温升问题,研究了一种高效率并联V型水冷结构,基于流体力学和传热学基本理论,采用有限体积元数值计算的方法对水冷结构进行了3D流场和温度场分析,描述了水冷电机内部流体的流动特性和流体的温升特性。在此基础上,建立了电机的3D稳态温度场模型,进行了温度场求解,对永磁水冷电机内部的传热特性进行了分析;研究了水冷结构的变化对电机温度场的影响。最后建立了水冷系统实验平台,验证了分析的正确性。
Aiming at the problem of serious temperature rise in high power density electric vehicle drive motor, a kind of high efficient parallel V-type water-cooling structure was researched. Based on the basic theory of hydromechanics and heat transfer, the 3D fluid and temperature fields were analyzed numerically by using the finite volume method. The fluid flow and heat transfer characteristics inside the water-cooling structure were described. Besides, the 3D steady thermal field of the motor was established and the result was solved. The heat transfer characters of the electrical motor and the thermal sensitivity to the height of the cooling ribs were analyzed. Finally, an experimental platform was established, and the test results verified the effectiveness of analysis.
出处
《轻工机械》
CAS
2013年第5期19-25,共7页
Light Industry Machinery
关键词
永磁水冷电机
水冷结构
数值计算
流场
温度场
PM water-cooled motor
water cooling structure
numerical calculation
fluid field
temperature field
