NOVELTY - The device has an inverter (12) for generating high frequency alternating current (AC) from direct current (DC) input from an AC/DC power supply (10). A primary side series capacitor (CS1) is connected between a primary side coil (13) and the inverter. A double current commutation circuit (15) rectifies AC call with a secondary side coil (14). A secondary side series resonance capacitor (CS2) is connected between the secondary coil and the circuit. An electric charging control part (20) is controlled such that inverter input DC voltage (Vdc) turns into constant voltage.    USE - Non-contact charging device for providing constant current charge of an electrical storage element e.g. electrical double layer capacitor and lithium ion battery, of a mobile body e.g. industrial electric vehicle such as electric forklift truck and unmanned electrically driven conveyance vehicle.    ADVANTAGE - The device can directly supply output of the double current commutation circuit of a secondary side for an electrical storage element and constant-current-charge the electrical storage element in the device, so that a need for providing a charging circuit between a rectifier circuit and the electrical storage element can be eliminated, thus reducing a number of semiconductor elements and suppressing electricity supply loss and switching noise. The device allows a primary side circuit to be monitored, so that a state of the primary side circuit can be adjusted and constant current charge of the electrical storage element can be controlled, thus performing charging in an efficient and easy manner.    DETAILED DESCRIPTION - The primary side coil is a power transmission coil. The secondary side coil is a receiving coil. An INDEPENDENT CLAIM is also included for a charge method.    DESCRIPTION OF DRAWING(S) - The drawing shows a circuit block diagram of a non-contact charging device.'(Drawing includes non-English language text)'    Primary side series capacitor (CS1)    Secondary side series resonance capacitor (CS2)    Inverter input DC voltage (Vdc)    AC/DC power supply (10)    Inverter (12)    Primary side coil (13)    Secondary side coil (14)    Double current commutation circuit (15)    Electric charging control part (20)