Drive motor of new energy vehicles and its market analysis
The performance of new energy vehicles is determined by the "three power" core components consisting of power batteries, drive motors and motor controllers, and is also known as the "big three" in the industry. The drive motor is the power source of the new energy vehicle, which is equivalent to the engine of the fuel vehicle; the motor controller refers to the device that controls the drive motor.
Overview of new energy vehicle motors
The drive motor is one of the three core components of the new energy vehicle. Compared with the traditional industrial motor, the new energy vehicle drive motor has higher technical requirements. Like ordinary motors, the new energy drive motor is mainly composed of three parts: stator, rotor and mechanical structure. Due to the narrow installation space, harsh working environment, and special reasons such as high vibration, large impact, severe corrosion, high temperature and high humidity, new energy drive motors need to have high density, small size, high power, high torque, reliability, durability and Low cost and other characteristics.
With the triumph of new energy vehicles in China, the growth rate of new energy vehicle motors is also very high. It is expected that with the continuous growth of new energy vehicle production and sales in the next few years, the motor market will show rapid growth. In 2016, China's new energy vehicle drive motor sales reached 559,000 units, and it is expected that the market space will exceed 98 billion yuan by 2020.
In the next few years, the proportion of new energy passenger car motors will show an upward trend. It is estimated that by 2020, the proportion of new energy passenger car motors will reach 47.4%, and the proportion of new energy passenger cars will reach 42.7%. 10%.
New energy vehicle motor type
There are four main types of new energy vehicle motors: DC motors, AC asynchronous motors, permanent magnet brushless motors (including permanent magnet synchronous motors) and switched reluctance motors.
Permanent magnet synchronous motors occupy the largest share of the domestic motor market due to their high efficiency, high power density and small size, and are mainly used in the passenger vehicle field.
AC asynchronous motor is relatively simple due to its low cost and simple structure, and its control technology is relatively mature. However, its large size and heavy weight all restrict its wide application to a certain extent, mainly used in new energy. Passenger cars and some passenger cars.
The structure of the switched reluctance motor is simple and reliable, and the system cost is low. However, since the switched reluctance motor has the disadvantages of large torque fluctuation, high noise, and nonlinear system, the current application is limited, and it is mainly applied to the field of new energy buses.