What is the meaning of "three electricity" in power system?

In the future pure electric era, the three-electric system will be the core standard for testing a car. Generally speaking, they are batteries, motors, electronic control systems,

Battery system. The battery here is not a battery that provides electric energy for vehicle lighting, air conditioning, etc. , but a high-voltage battery that is responsible for providing power. The battery performance of pure electric vehicles directly determines the cruising range. At present, battery capacity, charging time and volume are technical bottlenecks that need to be broken through. Because the current batteries are lithium iron phosphate batteries and ternary lithium batteries, which have great pollution and high chemical activity, the safety of batteries is also a factor worthy of consideration.

Motion system. The motor system is a high-voltage motor that provides torque for the car (to put it bluntly, it provides power for the car). A car can carry one, two or four engines. At present, it is divided into AC asynchronous motor and permanent magnet synchronous motor. If you want to achieve high efficiency, permanent magnet synchronous motor is better. In terms of motor technology, it is necessary to investigate from the aspects of torque, compressive strength, stability and durability. As a power system, it is one of the core components of pure electric vehicles, just like the battery system.

Electronic control system. Although the battery and motor are indispensable, the electronic control system is more complicated and plays the role of the central nervous system of the energy vehicle. Its main function is to collect various signals such as accelerator, brake pedal and steering wheel, and send corresponding instructions according to the corresponding information. In addition, the motor controller needs to control the speed and direction of the driving motor, and also control the energy recovery and other work. It can be said that the electronic control system is as complex as a human neural network, and the signals and instructions of all parts need to be received and transmitted by the electronic control system.