Industry news 2021-11-24

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What is the fault of the controller protection

        Controller protection 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 the electric vehicle and is an important part of the electric vehicle. The stall current of the electric vehicle controller is exactly the same as the dynamic running current, which ensures the life of the battery and improves the starting torque of the electric vehicle motor.
         Automatically recognize the commutation angle, Hall phase and motor output phase of the electric vehicle motor. As long as the controller's power line, handlebar line and brake line are not connected wrongly, the motor input and output mode can be automatically recognized, which can eliminate the need for The troublesome wiring of the brush electric vehicle motor greatly reduces the use requirements of the electric vehicle controller.

       The controller is composed of peripheral devices and the main chip (or single-chip microcomputer). Peripheral devices are some functional devices, such as execution, sampling, etc. They are resistors, sensors, bridge switch circuits, and devices that assist single-chip microcomputers or application-specific integrated circuits to complete the control process; single-chip microcomputers are also called microcontrollers, which are integrated on an integrated chip. Memory, decoder with signal language conversion, sawtooth wave generator and pulse width modulation function circuit as well as the power tube that can make the switch circuit turn on or off.
       The drive circuit, input and output ports, etc. that control the on-time of the power tube through the square wave to control the motor speed are integrated together to form a computer chip. This is the intelligent controller for electric bicycles. High-tech products that appear as "fools".
       The design quality and characteristics of the controller, the function of the microprocessor used, the power switch device circuit and the layout of peripheral devices, etc., are directly related to the performance and operating status of the vehicle, and also affect the performance and efficiency of the controller itself. Different quality controllers, used in the same car, equipped with the same set of batteries in the same charge and discharge state, sometimes show a big difference in continued driving ability.