ELECTRIC VEHICLE CHARGING SYSTEM AND CHARGING BILLING METHOD

摘要

An electric -vehicle charging system (10) is provided with a charger (12) installed in a predetermined position and a billing device (32). The charger (12) has: a reception unit (26) for receiving specification information used to specify an owner of the electric vehicle (16), the specification information being transmitted from the electric vehicle (16); and a power- transmission unit (28) for transmitting to the electric vehicle (16) that transmitted the specification information power to charge a secondary cell (18), the power- transmission unit (28) being supplied with power from a commercial power system (20). The billing device (32) bills the owner of the electric vehicle specified by the specification information according to the amount of power transmitted to the electric vehicle (16) by the charger (12). Consequently , the electric -vehicle charging system (10) can easily calculate how much to pay according to the power transmitted from the stationary charger to the electric vehicle.