an electronic shift unit outputting a shift signal;

an electronic clutch unit outputting a clutch signal;

a throttle position sensor outputting a throttle position signal;

a vehicle controller connected to the electronic shift unit, the electronic clutch unit, and the throttle position sensor; the vehicle controller determining the electric motorcycle is switched to a target gear position according to the shift signal, the clutch signal, and the throttle position signal, and generating a motor torque command corresponding to the target gear position; and

a motor controller connected to the vehicle controller to receive the motor torque command, and controlling a power motor of the electric motorcycle according to the motor torque command;

wherein the vehicle controller is preset with recharging current curves corresponding to different gear positions, and the recharging current curves include a relationship between a recharging current and a motor speed, and the recharging current in a low gear position is greater than the recharging current in a high gear position;

when the vehicle controller determines that a throttle position of the electric motorcycle is fully closed according to the throttle position signal, outputting a recharging current command to the motor controller according to the recharging current curve corresponding to the gear position of the electric motorcycle, so that the motor controller outputs a recharging current to a battery pack.