The main performance requirements of electric vehicle driving motor

(1) high torque density and power density, small size and light weight

(2) high efficiency in the whole operation range

(3) low speed and large torque characteristics and constant power characteristics in a wide range.In order to meet the requirements of starting, accelerating, driving, decelerating and braking power and torque, it should have a large starting torque and a wide range of speed regulation performance.Should have the automatic speed regulation function, reduces the control intensity, enhances the comfortability, achieves the internal combustion engine automobile same control response.

(4) high reliability, large overload capacity. 

(5) high voltage.The main advantages are that it can reduce the size of the motor, reduce the cost of the inverter and improve the energy conversion efficiency.

(6) high safety of electrical system.

(7) high speed.In the case of a certain torque, increasing the speed can improve the power.

In addition, the electric motors of electric cars are required to have strong resistance to high temperature and humidity, low noise during operation, and be able to work for a long time in a harsh environment. They are required to have features such as simple motor structure, suitable for mass production, and convenient use and maintenance of motors.

(8) can double as a generator.In order to reduce the weight of the car and save space, most of the motors can be used as generators to recover energy when the car is braking and decelerating.