Patent ID: 6462493
Filing Date: 2002-10-08
Classification: B62K,B62M

Abstract:
A kind of driving control apparatus of motorized scooter comprised of battery, driving unit, and motor, wherein the driving unit is connected with battery and supplies the power required by the motor, characterized in that said driving unit comprises at least a relay, a start-up and protective circuit, an under-voltage protective circuit, a power switch and speed control circuit, and a braking unit; and one end of said relay is connected with battery, that when the power switch and speed control circuit is on, and the relay is in open state, user can push the wheels of the scooter manually to drive the motor, causing the motor to generate counter electromotive force with its internal coil resistance and passive turning of armature, and when a set speed is reached, said counter electromotive force and the weak current it generates will actuate the start-up and protective circuit, and close the relay, so the current of the battery can pass through the relay to drive the motor directly; at the same time, the user can use the power switch and speed control circuit and the braking unit respectively to control the current input of motor, so as to control the acceleration, deceleration, and speed of the scooter; also, when the voltage output of battery to the motor is reduced significantly, the under-voltage protective circuit will open the relay immediately after receiving said voltage value, so the motor will stop turning due to the lack of current flow; at this time, the user may, depending on actual needs, use the braking unit to stop the scooter, or restart the scooter by pushing its wheels manually to let the motor turn passively; when the aforesaid set speed is reached, the relay is closed, so the current of battery may pass through the relay to drive the motor directly, thereby moving the scooter forward.