The utility model provides a swing arm formula forces to connect from addressing charging connecting device belongs to the charging device field, include the wireless wireless charging stand who charges the head and be connected who is connected with the module of charging of filling electric pile with on -vehicle battery, it sets up the motor in the electric pile to fill, the output shaft of motor passes the shell that fills electric pile and exposes and fill electric pile, be fixed with the swing arm on the output of motor, be equipped with the linear electric motor track in the swing arm, install the active cell on the linear electric motor track, install power device on the active cell, power device drives wireless charge first back -and -forth movement and wireless charging stand buttjoint, it is equipped with positioner in the electric pile to fill, positioner receives the action instruction of filling electric pile's charge management system, the swing of positioner control swing arm, control linear electric motor track drives the stator and moves on the linear electric motor track, stretching out and drawing back of control cylinder, can make and fill the automatic butt joint of electric pile and electric motor car and charge, use charging wire and artificial intervention have been avoided, the danger of charging has been reduced.