[Name of Document] CLAIMS
1. A power feeding system for electric vehicle comprising:
a DC distribution board arranged in a building, said distribution circuit being configured to distribute DC power supplied from a DC power supply to a distribution circuit arranged in the building;
a bidirectional power feeding device configured to perform a charging operation for feeding a charge-discharge part of an electric vehicle with DC power supplied from the DC distribution board, and a feeding operation for supplying the DC distribution board with DC power from the charge-discharge part of the electric vehicle, said electric vehicle including a battery, the charge-discharge part configured to charge-discharge the battery, and a charge-discharge control part configured to control operation of the charge-discharge part; and
a control device configured to generate a switching signal for changing the operation of the bidirectional power feeding device to either the charging operation or the feeding operation based on both power supplied from said DC power supply and power used on the distribution circuit side,
wherein the bidirectional power feeding device comprises:
a control part configured to cause the charge-discharge control part of the electric vehicle to change the operation of the charge-discharge part to either the charging operation of the battery or the feeding operation of the battery based on the switching signal generated by the control device;
a vehicle side feeding part configured to supply the electric vehicle with DC power supplied from the DC distribution board when the electric vehicle is charged; and

a distribution board side feeding part configured to supply the DC distribution board with DC power supplied from the electric vehicle when the electric vehicle discharges.
2. A power feeding system for electric vehicle as set forth in claim 1,
wherein said DC power supply comprises a storage battery, said storage battery being configured to be charged by DC power supplied from other DC power supply and configured to discharge when said other DC power supply stops feeding power, and
wherein the storage battery is configured to be charged by DC power supplied from the distribution board side feeding part when the electric vehicle discharges.