不同冷却流道参数对车载永磁电机性能的影响

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主题词：永磁同步电机耦合压力损失定子温度冷却流道中图分类号：U469.72；TM302 文献标志码：A DOI： 10.19620/j.cnki.1000-3703.20241041

Influence of Different Cooling Channel Parameters on the Performance ofVehicle-Mounted Permanent Magnet Motor

ZhangGuangjie¹，Zhang Jianlin²，Li Yunlong'，Ni Ruke³ （1.Hunan Key Laboratoryof New Energy Power and Transmission System，Zhuzhou Gear Co.，LTD.， Zhuzhou 41000; 2.HunanNonferousMetals VocationalandTechnicalCollege，Zhuzhou412oo;3.Shandong University，Jinan） 【Abstract】Based on Maxwell-Fluent，this paper analyzes the electric-magnetic-thermo-flow coupling of vehicle permanentmagnetsynchronous motor.Byestablishingathree-dimensionalmodelof themotorandcolingchannelsofdifrent structures，CFDisappliedtocompareandaalyzetheeffectsofdiffrentflowchanneltypes，eentrymodes，reentrytimesand inletandoutlet locationsontheflow channel pressure loss and stator temperature.Theresultsshow thatwhentheAngle between the inlet and outlet is 180∘ ，the number of reentry is7，and the flow channel type is rounded axial reentry，the cooling flowchannelhasthebestheatdisipationand pressureperformance.Itprovidesdatasupportforthedesignandselectionof the cooling runner of the permanent magnet synchronous oil cooled motor.

Key words：Permanent magnet synchronous motor，Coupling，Pressure loss，Stator temperature， Coolingchannel

【引用格式】张广杰，章建林，李云龙，等.不同冷却流道参数对车载永磁电机性能的影响[J].汽车技术，2025（8）：56-62. ZHANGGJ，ZHANGJL，LIYL，etal.InfluenceofDifferentCoolingChannelParametersonthePerformanceofVehicleMountedPermanentMagnetMotor[J].Automobile Technology，2O25（8）：56-62.

1前言

新能源汽车动力总成主要由电机、电控及减速器组成，一旦电机热管理失控，会降低电机负载能力及寿命，严重时会烧坏电机。（剩余9538字）