Basic structure and function of electric vehicle.

 1. Charger, which is a device to supplement electric energy to the battery, is generally divided into two stages and three stages of charging mode

2. The battery mainly adopts lead-acid battery combination. In addition, nickel-metal hydride battery and lithium-ion battery are also used in some portable folding electric vehicles

3. Controller, which is the component to control the motor speed and the core of the electric vehicle electrical system, has the functions of undervoltage, current-limiting and overcurrent protection

4. The rotating handle, brake handle and power assist sensor are all signal input components of the controller. The rotating handle signal is the control signal of the speed of the electric vehicle. When the brake handle signal is the electric signal output by the internal electronic circuit of the brake handle to the controller when the electric vehicle brakes, the controller will cut off the power supply to the motor after receiving this signal, so as to realize the brake power-off function. The power assist sensor is when the electric vehicle is in the power assist state, A device for detecting the pedal speed signal of pedal torque type. The controller distributes different electric drive power to the motor according to the size of the power sensor signal, so as to achieve the automatic matching of manpower and power, and jointly drive the rotation of the electric vehicle.

5. Electric motor is a component that converts battery electric energy into mechanical energy and drives the electric wheel to rotate. Common motors used on electric vehicles include: brush with teeth, brush without teeth, brush without teeth, brush without teeth, and side hung motors.

6. The combination of lamps, meters, lamps and meters that provide lighting and indicate the status of electric vehicles. The instrument generally provides battery voltage display, and the intelligent instrument can also display the fault condition of the electrical components of the whole vehicle.