How to adjust the speed of electric vehicle controller

The speed of the electric vehicle controller can be adjusted by rotating the handlebar, that is, manual speed regulation.

The controller of electric vehicle is the core control device used to control the start, operation, advance and retreat, speed, stop and other electronic equipment of electric vehicle. It is like the brain of an electric car and an important part of it. In order to prevent the controller from entering water and facilitate heat dissipation, the controller is installed in a sealed box made of aluminum, copper and other materials.

There are two kinds of electric vehicle controllers in structure: separated and integrated. The system is generally composed of motor, power converter, sensor and electric vehicle controller.

The design quality and characteristics of the controller, the function of the microprocessor, the circuit of the power switch device and the layout of the peripheral devices are directly related to the performance and running state of the whole vehicle, and also affect the performance and efficiency of the controller itself. Controllers with different qualities, used in the same car and equipped with the same set of batteries with the same state of charge and discharge, sometimes show great differences in driving ability.

Main functions of electric vehicle controller:

1. Drive the motor to rotate.

2. Change the driving current of the motor under the control of the rotating handle, so as to realize the adjustment of the motor speed.

3. Cut off the output current under the control of the brake handle (brake handle) to realize brake control.

4. Check the battery voltage. When the voltage stored in the battery is close to the "discharge termination voltage", the controller panel (or instrument display panel) will show that the power is insufficient to remind the rider to adjust the trip. When the termination voltage is reached, the signal will be sent to the comparator through the sampling resistor, and the circuit will output the protection signal, so that the protection circuit will issue instructions according to the preset program to cut off the current and protect the charger and battery.

5. Over-current protection. When the current is too large, the overcurrent protection circuit will act to stop the motor to avoid the harm of overcurrent to the motor and controller. In addition, some controllers also have the functions of overspeed protection and cruise speed limit.