Power feeding system for vehicle, electrically powered vehicle and power feeding apparatus for vehicle

An electrically powered vehicle with electric power fed from a power transferring unit of a power feeding apparatus provided outside of the vehicle and arranged on the ground, the electrically powered vehicle comprising:

• a power receiving unit configured to receive electric power transferred from said power transferring unit in a non-contact manner;
• a first sensing unit for sensing a position of said power transferring unit;
• a first guidance control unit for controlling the vehicle such that the vehicle is guided toward said power transferring unit based on input from said first sensing unit;
• a second sensing unit for sensing a distance between said power transferring unit and said power receiving unit based on an electric power feeding condition from said power transferring unit to said power receiving unit;
• and
• a second guidance control unit for controlling the vehicle such that a position of said power receiving unit is adjusted toward a position of said power transferring unit based on input from said second sensing unit when the vehicle is within a prescribed distance from said power transferring unit by said first guidance control unit, wherein
• said second guidance control system is configured to stop said vehicle, when a change ratio of at least one of a received current and received voltage received from said power transferring unit becomes smaller than a predetermined value while said vehicle is moving toward said power transferring unit.

A power feeding apparatus for an electrically powered vehicle for feeding electric power, in a non-contact manner, to a power receiving unit incorporated in the electrically powered vehicle, the power feeding apparatus comprising:

• a power transferring unit configured to transfer electric power received from a power supply to said power receiving unit in a non-contact manner;
• a communication unit for conducting communication with said vehicle;
• and
• a power control unit for controlling electric power transferred from said power transferring unit to said power receiving unit, wherein
• said vehicle is configured to move such that said power receiving unit moves toward a position of said power transferring unit based on an electric power feeding condition from said power transferring unit to said power receiving unit, and
• during reception of a signal indicating that said movement is being performed from said vehicle via said communication unit, said power control unit controls said electric power to be smaller than electric power transferred from said power transferring unit to said power receiving unit after completion of said movement, and
• said vehicle is configured to stop, when a change ratio of at least one of a received current and received voltage received from said power transferring unit becomes smaller than a predetermined value while said vehicle is moving toward said power transferring unit.