Patent ID: 8552594

Claim:
A noncontact power feed system, comprising: a noncontact power feed apparatus including a power feed resonance device to supply alternate-current power to an electronic apparatus by resonance in a noncontact manner, and an alternate-current power source section to generate the alternate-current power having a frequency corresponding to a resonant frequency of the power feed resonance device and supply the alternate-current power to the power feed resonance device; a noncontact relay apparatus including a relay resonance device to receive supply of the alternate-current power from the power feed resonance device of the noncontact power feed apparatus by resonance in a noncontact manner and relay the alternate-current power to another electronic apparatus by resonance in a noncontact manner, a relay-side rectifier circuit to form direct-current power based on the alternate-current power supplied from the relay resonance device and output the direct-current power, and a movement means for moving the noncontact relay apparatus by being driven by the direct-current power from the relay-side rectifier circuit; and at least one noncontact power reception apparatus including a power reception resonance device to receive supply of the alternate-current power from the relay resonance device of the noncontact relay apparatus by magnetic field resonance in a noncontact manner, a power-reception-side rectifier circuit to form direct-current power based on the alternate-current power supplied from the power reception resonance device and output the direct-current power, and a load means driven by the direct-current power from the power-reception-side rectifier circuit.