油冷电机喷淋流量分配及传热效果仿真研究  

Simulation Study on Spray Flow Distribution And Heat Transfer Effect of Oil-cooled Motor

作　　者：黄勇 姚博炜 王国栋 刘星 蓝余永 冯昌玮 HUNAG Yong;YAO Bowei;WANG Guodong;LIU Xing;LAN Yuyong;FENG Changwei(Liuzhou Saike Technology Development Co.,LTD.,Liuzhou Guangxi 545005,China;Liuzhou Key Laboratory of Electrified Powertrain Electronic Control,Liuzhou Guangxi 545005,China)

机构地区：[1]柳州赛克科技发展有限公司,广西柳州545005 [2]柳州市电气化动力总成电子控制重点实验室,广西柳州545005

出　　处：《微电机》2025年第1期51-55,61,共6页Micromotors

基　　金：广西科技重大专项(桂AA23062058/桂AA23062071)。

摘　　要：电机的冷却对电机的正常运行、效率提升以及可靠性提高等方面都具有重要影响。对于油冷电机,电机的喷淋流量很大程度上决定了电机的冷却效果,需要根据电机的具体需求和冷却条件来选择合适的喷淋流量。本文以一台双电机混动专用变速器为例,基于计算流体力学(Computational Fluid Dynamics,CFD)方法,应用FLUENT及shonDy软件建立了仿真模型,研究油冷电机的喷淋流量分配及传热效果。研究结果表明:随着喷油流量增加,定子的流量也随之增加,但是定子各区域流量分配的比例变化不大;随着冷却液温度的升高,定子喷油管的流量逐渐增加,-20℃到60℃流量变化较大,60℃到100℃流量几乎没有变化;P1电机定子绕组非焊接端大部分区域的对流换热系数较高,传热效果较好;绕组焊接端部分区域的对流换热系数较低,传热效果不佳;P3电机绕组焊接端和非焊接端大部分区域的对流换热系数均较高,传热效果较好;P1和P3电机铁心部分的对流换热系数均较高,传热效果较好。The cooling of the motor has an important impact on the motor running,the improvement of efficiency and the improvement of reliability.For oil-cooled motors,the spray flow rate of the motor largely determines the cooling effect of the motor,and the appropriate spray flow rate needs to be selected according to the specific needs of the motor and cooling conditions.This paper took a dual-motor hybrid special transmission as an example,based on Computational Fluid Dynamics(CFD)method,the simulation model was established by using FLUENT and shonDy software,to study the spray flow distribution and heat transfer effect of oil-cooled motor.The results show that:with the increase of oil injection flow,the stator flow also increases,but the proportion of flow distribution in each region of the stator does not change much.As the temperature of the coolant increases,the flow rate of the stator injection pipe gradually increases,the flow rate varies greatly from-20℃to 60℃,and the flow rate hardly changes from 60℃to 100℃;The heat transfer coefficient of P1 motor is higher in most areas of the non-welded end of the stator winding,heat transfer effect is better;The heat transfer coefficient in part of the welded end of the winding is low,heat transfer effect is bad;The heat transfer coefficient of the welded end and the non-welded end of P3 motor winding is high,heat transfer effect is better;The heat transfer coefficients of the core parts of P1 and P3 motors are high,heat transfer effect is better.

关 键 词：喷淋系统 油冷电机 流量分配 对流换热 喷油管 

分 类 号：TM301.41[电气工程—电机]