Electric vehicle controller function and circuit diagram

The electric vehicle controller is the core control device used to control the start, run, advance and retreat, speed, stop, and other electronic devices of the electric vehicle. It is like the brain of an electric vehicle and an important component of an electric vehicle. Electric vehicles currently include electric bicycles, electric two-wheeled motorcycles, electric tricycles, electric three-wheeled motorcycles, electric four-wheeled vehicles, battery vehicles, etc. Electric vehicle controllers also have different performance and characteristics due to different models. .

Electric vehicle controller function

Ultra-quiet design technology: A unique current control algorithm that can be applied to any one.

The brushless electric vehicle motor has considerable control effect, which improves the universal adaptability of the electric vehicle controller, so that the electric vehicle motor and the controller no longer need to be matched.

Constant current control technology: The electric vehicle controller's locked rotor current and dynamic running current are exactly the same, which ensures the battery life and improves the starting torque of the electric vehicle motor.

Automatic identification of motor mode system: Automatic recognition of the commutation angle, Hall phase and motor output phase of the electric vehicle motor. As long as the power line, the switch line and the brake line of the controller are not connected incorrectly, the input and output of the motor can be automatically recognized. The mode can save the trouble of the motor wiring of the brushless electric vehicle and greatly reduce the use requirements of the electric vehicle controller.

Follow-up abs system: with anti-charge / car EABS brake function, the introduction of the car-class EABS anti-lock technology, to achieve the EABS brake mute, soft effect, no matter at any speed to ensure the comfort and stability of the brakes, not There will be a phenomenon that the original abs can not brake at low speed, without damaging the motor, reducing the mechanical braking force and the pressure of the mechanical brake, reducing the brake noise, greatly increasing the safety of the whole vehicle brake; and braking and decelerating When the downhill slides, the energy generated by EABS is fed back to the battery to counter-charge the battery, thereby maintaining the battery life, increasing the battery life and increasing the mileage. The user can adjust the EABS brake depth according to his riding habits.

Motor lock system: In the alarm state, the controller will automatically lock the motor when the alarm occurs. The controller has almost no power consumption. There is no special requirement for the motor. It has no effect on the normal implementation of the electric vehicle under the condition of battery undervoltage or other abnormal conditions.

Self-test function: divided into dynamic self-test and static self-test. As long as the controller is in the power-on state, it will automatically detect the interface status related to it, such as the handle, brake lever or other external switch. The device automatically implements protection to ensure the safety of riding. When the fault is removed, the protection status of the controller will be automatically restored.

Anti-charging function: feedback the energy generated by EABS to the battery during braking, deceleration or downhill taxiing, which has the effect of anti-charging, thus maintaining the battery, extending battery life and increasing the mileage.

Stall protection function: It automatically judges whether the motor is in a completely blocked state or in the running state or the motor short circuit state when overcurrent. If it is in running state when overcurrent, the controller sets the current limit value to a fixed value to keep If the motor is in a purely locked state, the controller will limit the current limit to less than 10A after 2 seconds to protect the motor and battery and save energy; if the motor is in a short circuit, the controller will make the output The current is controlled below 2A to ensure the safety of the controller and battery.

Dynamic and static phase loss protection: When the motor is in running state, when the phase failure of any phase of the electric motor occurs, the controller implements protection to avoid burning the motor, protect the battery of the electric vehicle and prolong the battery life.

Power tube dynamic protection function: When the controller is running dynamically, the power tube is monitored in real time. Once the power tube is damaged, the controller immediately implements protection to prevent the cart from being damaged after the other power tubes are damaged due to the chain reaction. More laborious phenomenon.

Electric vehicle controller circuit diagram