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Cooling solution for car driving motor housing

Extruded aluminum motor housing has an extensive application due to the advantages of higher strength, lightweight, and better cooling performance. Moreover, it meets the cosmetic requirements on the surface and it not only resists to corrosions but also requires no further machining on the internal surface. It is not only smaller in volume but also lightweight with a simpler structure which is easy to install and maintain. The production process is very eco-friendly and the production throughput is higher. It is easier for transportation and storage and thus it is favored by a variety of electric motor manufacturers.
Winshare Thermal is a high power manufacturer who specializes in the thermal management of various parts. In the motor housing field, Winshare Thermal engineers have been trained to consider the cooling requirements during the earlier stage of a motor housing design. We design the shape of a motor housing and the profile and size of fins based on the cooling requirement of the electric motor. When there are particular environmental constraints, we will include several cooling techniques for a design including forced air cooling, liquid cooling, etc.

Profile and simplified structure of the numerical model of a car driving motor:

Schematic of meshes around the stator:

Schematic of meshes around the rotor:

Schematic of meshes around the water passages:

Schematic of meshes on the wire-wrapping assembly and the air gap between the stator and the rotor:

Schematic of meshes of the motor cooling model:

Schematic of simulation results of cooling water pressure:

Schematic of simulation results of cooling water velocity vectors:

Schematic of simulation results of cooling water temperature:

Schematic of simulation results of wire-wrapping assembly temperature:

Schematic of simulation results of outer motor housing temperature:

Schematic of simulation results of stator core temperature:

Schematic of simulation results of rotor system temperature:

This motor cooling solution is a preliminary design solution. It is known form the simulation model and relevant schematics that heat is still concentrated on some areas of the water passages. This means further improvements might be required and please contact our customer service for more information on how to embody the improvement solution.