Electric vehicle-mounted complete closed switch reluctance motor

Abstract

This invention relates to an electromotive car carried closed switch reluctance motor including a shell, a stator, a rotor, internal and external air-cooling radiation units and a water-proof unit characterizing that the radiation unit enables the stator winding to get dual radiation of air cooling outside and inside at the same time, besides, special sealing devices are set at the end of the motor, the shaft end and the connection port to prevent water.

Description

technical field [0001] The invention relates to electric vehicle motor technology, in particular to an electric vehicle fully enclosed switched reluctance motor. This is a vehicle-mounted drive motor with strong driving power, good heat dissipation performance, and good waterproof performance. When the drive motor runs at high speed, the cooling system can effectively control the temperature rise, especially the temperature rise at the end of the stator winding of the switched reluctance drive motor. Background technique [0002] At present, the types of electric motors driven by electric vehicles include asynchronous motors, permanent magnet brushless motors and switched reluctance motors. The torque fluctuation of the asynchronous motor is small, but the efficiency is low, especially in the low speed stage; the permanent magnet brushless motor has high efficiency, but the manufacturing process is complicated, there is demagnetization problem, the reliability is not high, ...

AI Technical Summary

Problems solved by technology

In addition, if the heat dissipation ribs of the driving motor are parallel to the axial direction of the car wheel, the wind direction is from front to rear along the car body and perpendicular to the axial direction of the motor during driving, that is, the wind moves along the radial direction of the motor, resulting in poor heat dissipation of the motor. uniform

If the heat dissipation ribs on the motor frame are along the motor axis, the forward heat dissipation ribs of the motor will receive the wind better, but it will affect the air volume of the heat dissipation ribs behind it, which will also cause uneven heat dissipation of the motor.

Experiments have shown that if the car is completely driven, the wind resistance formed by the relative air movement will dissipate heat from the motor. When the electric car stops running, the heat dissipation of the motor will be completely carried out by conduction and radiation. The heat dissipation efficiency is low, and the temperature of the motor will easily rise. Relatively high, affecting the working efficiency and service life of the drive motor

The switched reluctance motor has its special structure—the winding is concentrated, so there is often the problem of poor heat dissipation of the stator winding, especially its end. The resulting defect is that as the speed increases or the motor runs for a long time, the It will cause a large temperature rise, which will reduce the working efficiency of the motor, and long-term operation will cause the insulation of the stator winding to age and reduce the service life

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