1, the motor power density, efficiency, life expectancy and other comprehensive performance needs to be further improved. 2, product consistency, reliability and automotive industry requirements are still gaps; many enterprises produced samples of good quality, but once in production, there will be different quality, can not achieve the same performance. Moreover, products are certified less by TS16949 quality system standards that meet vehicle quality requirements. 3, the cost is too high. This is mainly in addition to requiring enterprises to improve technical standards, but also must enhance productivity. Only when a certain amount is reached, the cost price of the motor can really drop. But facing the new energy automotive motor and control system working condition is relatively complex: the need to be able to stop frequently, add speed, low speed / high torque requirements when climbing, low torque at high speed, with large speed range; hybrid cars also need to deal with the startup of motor, motor power, braking and other special features. In addition, the energy consumption of the motor directly determines the mileage of the fixed battery capacity. Therefore, in the system load requirements, special requirements of technical performance and working environment on the electric vehicle drive: a drive motor has higher energy density, light weight and low cost, to adapt to the limited space inside the vehicle, at the same time with energy feedback ability, reduce the energy consumption of the whole car; second, the drive motor at the same time with high speed and low speed high torque and wide speed regulation, in order to provide high starting speed, climbing performance and high-speed acceleration performance; third, control system have high control precision and high dynamic response speed, high safety and reliability and provide. As an important part of the new energy automobile industry chain, the technology and manufacture level of the motor directly affect the performance and cost of the whole vehicle. At present, the degree of autonomy in the domestic motor and electric field is still far behind the battery, motor control part of the core components such as IGBT chips still do not have completely independent production capacity, with a complete system of intellectual property rights is still a small number of car companies and parts enterprises.