Many people have been arguing about whether the power supply of electric vehicles is DC or AC, and a large number of people still don't understand the reason. Here we will analyze it from a professional perspective.

In a word, before entering the controller, it is DC, and then the motor is AC, and then the controller converts the frequency. The 220 V converter also changes the frequency from DC to AC, and this is about these steps. Electric vehicle motor belongs to three-phase AC synchronous motor with star winding.

Although the electric vehicle uses a DC power supply, the motor does have AC and DC differentiation.

Two conditions can be found by observing the motor lead of the electric motorcycle. First, there are only two thick lines. This is a brush motor and a DC motor. Second, there are three thick lines and five thin lines. This is a brushless motor. It is also called AC motor. With the development of technology, the brushless motor can not use those five thin wires now, but the performance and use effect are not very good.

Electric vehicles are divided into AC electric vehicles and DC electric vehicles. Generally speaking, an electric vehicle is a vehicle that uses batteries as its energy source, converts electrical energy into mechanical energy for movement through controllers, motors and other components, so as to control the current and change the speed. An electric vehicle was built in 1834. It is driven by a DC motor.

With the development of science and technology, there are more kinds of electric vehicles now.

Electric bicycles can be divided into: electric bicycles; Electric motorcycle; Electric wheelbarrow;

Electric tricycle; Electric scooter; Pure electric vehicles, incremental electric vehicles, hybrid electric vehicles, fuel cell vehicles. According to the way of power supply, it can be divided into two categories: one is to connect external power supply to obtain power, and the other is to use fuel cells, energy storage devices (such as energy storage batteries, super capacitors), etc. as power.

Classified by driving mode: pure electric vehicle, hybrid electric vehicle (series, parallel, parallel), fuel cell electric vehicle.

Classification by use: electric vehicles; Electric tricycle; Electric bicycle (comparable bicycle)

Overall configuration of electric bicycle: electric bicycle is composed of four parts: battery, electric wheel hub, controller, charger and vehicle body.