WIRELESS POWER FEEDER AND WIRELESS POWER RECEIVER
First Claim
1. A wireless power feeder that feeds power from a feeding coil to a receiving coil by wireless using a magnetic field resonance phenomenon between the feeding coil and receiving coil, said feeder comprising:
- a plurality of the feeding coils;
a plurality of receivers that are provided respectively in correspondence with the plurality of feeding coils and each receives a position signal from a receiving body having the receiving coil; and
a power transmission control circuit that supplies AC power at a drive frequency to the feeding coil corresponding to the receiver that has received the position signal to allow the feeding coil to feed AC power to the receiving coil.
2 Assignments
0 Petitions
Accused Products
Abstract
A wireless power feeder 116 feeds power from a feeding coil L2 in the ground to a receiving coil L3 incorporated in an EV by wireless using a magnetic field resonance phenomenon between the feeding coil L2 and receiving coil L3. A plurality of feeding coils L2a to L2d are buried in the ground. Receivers 112a to 112d are buried in corresponding respectively with the feeding coils L2a to L2d. The plurality of receivers 112 each receive a position signal transmitted from a transmitter 110 of the EV. A feeding coil circuit 120 supplies AC power to the feeding coil L2 corresponding to the receiver 112 that has received the position signal to allow the feeding coil L2 to feed power to the receiving coil L3 by wireless.
69 Citations
10 Claims
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1. A wireless power feeder that feeds power from a feeding coil to a receiving coil by wireless using a magnetic field resonance phenomenon between the feeding coil and receiving coil, said feeder comprising:
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a plurality of the feeding coils; a plurality of receivers that are provided respectively in correspondence with the plurality of feeding coils and each receives a position signal from a receiving body having the receiving coil; and a power transmission control circuit that supplies AC power at a drive frequency to the feeding coil corresponding to the receiver that has received the position signal to allow the feeding coil to feed AC power to the receiving coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification