Research on the Structure of a New Integrated Cooling Channel for Electric Motor and Reducer

In the cooling system of electric drive assembly, cooling fluid often only flows through the motor and controller, which cannot effectively dissipate heat from the motor bearings and reducers. This paper proposed a new water-cooled structure that can effectively dissipate heat from the motor and reducer. The structure at different parameters were simulated using CFD-FLUENT to investigate the temperature of the motor bearing seat and reducer end face. The simulation results show that when L1: L2=1:1, the cooling efficiency is the highest. In addition, research has shown that adding spoiler columns to the new structure will result in a more uniform distribution of fluid velocity and better heat dissipation effect.