Application number: 200920302780. Date of application: April 30, 2009.
The utility model relates to the technical field of electric drive control, and relates to a self-adaptive energy-saving and energy-storage DC brushless controller. The battery voltage signal, handlebar speed control signal, brake signal of the brake handle and various detection signals output by the motor Hall signal detection circuit of the controller are sent to the microprocessor, and the microprocessor controls the power tube bridge wall output circuit through the driver according to the input signal. The microprocessor sets a first threshold node and a second threshold node according to the battery voltage signal; When the received battery voltage signal is higher than the first threshold node, the LED lamp is turned on, and the maximum discharge current for controlling the transmission ratio decreases with the decrease of battery voltage; When the received battery voltage signal is higher than the second threshold node, the output current of the output circuit of the power tube bridge arm is reduced to reduce the motor torque. The utility model sets two thresholds of control and protection functions, which can effectively inhibit the discharge of large current, thus protecting the battery, the motor and the controller and improving the reliability and practicability of the product.