Basic knowledge of electric vehicle motors
Electric vehicle motor status
The electronic control system is the brain of the electric vehicle, which directs the operation of the electronic components of the electric vehicle. The in-vehicle energy system is the core technology in the electronic control system. It is a link between the battery and the battery pack and the whole vehicle system, including the battery. Management technology, in-vehicle charging technology and DCDC technology and energy system bus technology. Therefore, the vehicle energy system technology has increasingly become an important direction of industrial application technology research, and it has increasingly become an important symbol of industrial development. At present, this technology has become an important bottleneck restricting the convergence and development of the electric vehicle industry chain.
Industrial transformation of electric vehicle motor
Electric vehicles have shown signs of transformation from research and development to industrialization. The core automobile manufacturers and core components manufacturers such as power storage batteries, drive motors and controllers have grown and expanded in several years of promotion and demonstration work, and launched a series of products that meet performance requirements. . However, as the key component technology of the key technologies of the motor, battery and other key components, its reliability, cost, durability and other major indicators can not meet the needs of the development of electric vehicles, and become the main constraints of the development of electric vehicles.
Difficulties in the development of electric vehicle motors
From the perspective of the electric vehicle industry chain, the beneficiary side may mainly focus on the core components, and the upstream resource side will benefit more from the companies with strong resource control.
The main reasons for R&D difficulties are as follows:
First: The battery is the biggest bottleneck in current electric vehicle technology and cost.
Second: due to the scarcity of mineral resources, lithium, nickel and other upstream resource companies will also have greater profit.
Third: OEMs are currently chaotic and have no established monopoly leadership. They should first focus on those who have core technology or have mature, commercially available models.
Electric vehicle motor requirements for the drive system
High voltage, small mass, large starting torque and large speed range, good starting performance and acceleration performance, high efficiency, low loss and high reliability. There are several key issues to consider when choosing an electric vehicle motor drive system: cost, reliability, efficiency, maintenance, durability, weight and size, noise, and more. When selecting a motor for a pure electric vehicle, it includes the choice of motor type, power, torque, and speed.
