Power supplementing method for mobile intelligent charging system of electric vehicle

The invention provides a power supplementing method for a mobile intelligent power supplementing system of an electric vehicle, and belongs to the technical field of mobile intelligent power supplementing systems of electric vehicles. The power supplementing system comprises a bidirectional charging and discharging module, a control unit, a man-machine interaction unit, a metering unit, a charging and discharging connecting device, a direct current charging seat and a battery pack; the bidirectional charging and discharging module is electrically connected with a mains supply three-phase power transmission line through an alternating current contactor KMA1; the bidirectional charging and discharging module is electrically connected with the control unit; the man-machine interaction unit and the metering unit are both electrically connected with the control unit. With the power supplementing method for the mobile intelligent charging system of the electric vehicle of the invention adopted, an electric vehicle