VEHICLE CHARGING SYSTEM

To share a built-in storage battery between chargers and perform charging of a vehicle with superposition of commercial power even when the vehicle is being charged with storage power of a built-in storage battery.SOLUTION: Chargers 1 are connected via a power cable 2 to enable sharing of DC power and are also connected so that commercial power P internally converted to DC power can be directly supplied to charging of a vehicle, enabling charging of the vehicle with the commercial power P superposed on stored power of a built-in storage battery 15. When a power storage amount of the built-in storage battery 15 of its charger 1 has become low and if it is determined that a power storage amount of a charger 1 capable of sharing DC power is sufficient on the basis of information obtained via a communication unit 21, a control unit 20 executes control for supplying power from the built-in storage battery 15 of the charger 1 and executes charging of the vehicle with commercial power superposed on its stored power.SELECTED DRAWING: Figure 1 【課題】 充電器間で内蔵蓄電池をシェアすると共に、内蔵蓄電池の蓄電電力で車両充電中であっても、商用電力を重畳して車両充電を実施する。【解決手段】 充電器１同士が電力ケーブル２を介して接続されて、直流電力のシェアを可能とし、また内部で直流変換した商用電力Ｐが直接車両充電に供給できるよう接続されており、内蔵蓄電池１５の蓄電電力に商用電力Ｐを重畳させた車両充電を可能とた。制御部２０は、自充電器１の内蔵蓄電池１５の蓄電量が僅かになったら、通信部２１を介して得た情報を基に、直流電力のシェアが可能な充電器１の蓄電量が十分であると判断したら、当該充電器１の内蔵蓄電池１５から電力を供給させる制御を実施し、その蓄電電力に商用電力を重畳させて車両充電を実施する。【選択図】 図１