基于CFD方法的驱动电机散热器结构研究  

Research on the Structure of Heat Sink of Drive Motor Based on CFD Method

作　　者：周中成 王嘉伟 张昆 易昊 李英扬 吴凡 ZHOU Zhongcheng;WANG Jiawei;ZHANG Kun;YI Hao;LI Yingyang;WU Fan(School of Automotive and Transportation Engineering,Jiangsu University of Technology,Changzhou 213001,China)

机构地区：[1]江苏理工学院汽车与交通工程学院,江苏常州213001

出　　处：《拖拉机与农用运输车》2024年第5期38-42,共5页Tractor & Farm Transporter

摘　　要：针对电动农机驱动系统中电机的温升问题,对传统螺旋水道结构改进优化,并对其建立物理模型进行散热仿真分析,旨在提高散热器的散热效果,降低主要发热部件温升;采用CFD方法进行优化考虑。基于电磁损耗模型的损耗功率,对散热器流道采用CFD方法建立多组水道进出口角度和内壁面高宽比变化的模型,分析两参量对流体流动的影响。结果显示,随着偏转角度的增大,散热效果有所下降。而高宽比的增大导致散热效率上升。当高宽比为16∶7.5时电机表面温度可降低1.7℃。In order to solve the problem of the temperature rise of the motor in the drive system of new energy vehicles,this research improves and optimizes the structure of the traditional spiral waterway,and establishes a physical model for heat dissipation simulation analysis,aiming to improve the heat dissipation effect of the radiator and reduce the temperature rise of the main heating components.Based on the loss power of the electromagnetic loss model,the CFD method is used for the radiator flow channel to model the change of the entrance and exit angles of the water channel and the aspect ratio of the inner wall surface in multiple groups,and to analysis the effect of the two covariates on the fluid flow.The results show that the heat dissipation effect decreases with the increase of deflection angle.Whereas,the increase in aspect ratio leads to an increase in heat dissipation efficiency.The surface temperature of the motor can be reduced by 1.7℃when the aspect ratio is 16∶7.5.

关 键 词：农用车 驱动电机 冷却水套 散热效果 水道优化 

分 类 号：TM351[电气工程—电机]