Contactless power receiving device, vehicle, contactless power transmitting device, and contactless power supply system

A contactless power transmitting device comprising:

• a power transmitting unit that contactlessly transmits electric power to a power receiving unit provided in a power receiving device, and that includes:
• a fourth coil;
• a fourth capacitor that is connected to the fourth coil;
• and a fourth selector device that is connected in parallel with the fourth capacitor and that is configured to be switched between a connecting state in which the fourth selector device electrically connects both ends of the fourth capacitor and a disconnecting state in which the fourth selector device electrically disconnects the both ends of the fourth capacitor;
• and
• a power supply unit that supplies electric power to the power transmitting unit.

A vehicle comprising:

• a power receiving unit that contactlessly receives electric power from a power transmitting unit provided in a power transmitting device, and that includes:
• a coil;
• a capacitor that is connected to the coil;
• and a selector device that is connected in parallel with the capacitor and that is configured to be switched between a connecting state in which the selector device electrically connects both ends of the capacitor and a disconnecting state in which the selector device electrically disconnects the both ends of the capacitor;
• and
• an electric load device that uses the electric power received by the power receiving unit.

A contactless power supply system comprising:

• a power transmitting unit that is provided in a power transmitting device and that includes a plurality of coil units;
• a power receiving unit that is provided in a vehicle;
• and
• a control unit, wherein:
• each of the plurality of coil units includes:
• a coil;
• a capacitor that is connected to the coil;
• and a selector device that is connected in parallel with the capacitor and that is configured to be switched between a connecting state in which the selector device electrically connects both ends of the capacitor and a disconnecting state in which the selector device electrically disconnects the both ends of the capacitor;
• the control unit selects at least one of the coil units, which is used to transmit electric power, from among the plurality of coil units on the basis of a position of the power transmitting unit and a position of the power receiving unit;
• and
• the control unit executes control such that the selector device corresponding to the at least one selected coil unit is set in the disconnecting state and the selector device corresponding to the non-selected coil unit is set in the connecting state.

A contactless power supply system comprising:

• a power transmitting unit that is provided in a power transmitting device;
• a power receiving unit that is provided in a vehicle and that includes a plurality of coil units;
• and
• a control unit, wherein:
• each of the plurality of coil units includes:
• a coil;
• a capacitor that is connected to the coil;
• and a selector device that is connected in parallel with the capacitor and that is configured to be switched between a connecting state in which the selector device electrically connects both ends of the capacitor and a disconnecting state in which the selector device electrically disconnects the both ends of the capacitor;
• the control unit selects at least one of the coil units, which is used to receive electric power, from among the plurality of coil units on the basis of a position of the power transmitting unit and a position of the power receiving unit;
• and
• the control unit executes control such that the selector device corresponding to the at least one selected coil unit is set in the disconnecting state and the selector device corresponding to the non-selected coil unit is set in the connecting state.