VEIM XIAMEN MOTOR MACH CO.LTD Language：中文版
Seven differences between electric vehicle motors and ordinary motors
Release time: 2023-03-07
Electric vehicles are the development trend of the automobile industry. Everyone knows that the core of its principle is to replace the engine with an automobile drive motor to achieve electric drive. But have you ever thought about whether the driving motor on an electric vehicle is the same as a normal motor? The answer is definitely no. Compared with conventional induction motors, electric vehicle motors are quite different in terms of performance requirements and driving principles:
1. Electric vehicle motors should have large starting torque, good starting performance and good acceleration performance to meet the requirements of frequent start and stop, acceleration and deceleration or climbing of electric vehicles. Reflected in the motor test, it is required that the response time of the motor should be short when the speed or torque is controlled; at the same time, when the external load changes stepwise, the motor's own reflection should be fast enough to adjust the output power and speed;
2. Motor The constant power range of the motor vehicle motor should be designed to be relatively wide to meet the torque output of the electric vehicle when driving at high speed;
3. Electric vehicle motors should have a wide range of speed regulation capabilities, with large torque at low speeds and high power at high speeds, and can adjust the driving speed and corresponding driving force of electric vehicles at any time according to driving needs;
4. Electric vehicle motors should have good efficiency characteristics. In a wide speed/torque range, good efficiency can be obtained, and the continuous mileage after charging can be improved. Generally, it is required to obtain 85%~ in a typical driving cycle area. 93% efficiency;
5. The external dimensions of electric vehicle motors should be as small as possible, the weight should be as light as possible, and the power density should be optimized;
6. The electric vehicle motor should have good stability, strong temperature and humidity resistance, be able to work for a long time in a harsh environment, have low noise during operation, and be easy to maintain;
7. Whether the motor controller can effectively recover the energy generated by braking.
