WIRELESS POWER FEEDER, WIRELESS POWER RECEIVER, AND WIRELESS POWER TRANSMISSION SYSTEM
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 feeding coil circuit that includes the feeding coil; and
a power supply circuit that supplies AC power to the feeding coil,the feeding coil circuit further including an adjustment coil whose axial direction is at substantially right angles to the direction of magnetic flux generated by the receiving coil.
2 Assignments
0 Petitions
Accused Products
Abstract
Power is fed from a feeding coil L2 to a receiving coil L3 using magnetic resonance. The receiving coil L3 is connected in series to a capacitor C3 to constitute a receiving coil circuit 130. The receiving coil L3 is further connected to an adjustment coil L5. By adjusting the inductance of the adjustment coil L5, the resonance frequency of the receiving coil circuit 130 can be adjusted. Since the axial direction of the adjustment coil L5 is at right angles to the power feeding direction, an electromotive force does not occur in the adjustment coil L5.
-
Citations
13 Claims
-
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 feeding coil circuit that includes the feeding coil; and a power supply circuit that supplies AC power to the feeding coil, the feeding coil circuit further including an adjustment coil whose axial direction is at substantially right angles to the direction of magnetic flux generated by the receiving coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A wireless power receiver that receives, at a receiving coil, AC power fed from a feeding coil by wireless using a magnetic field resonance phenomenon between the feeding coil and receiving coil, said receiver comprising:
-
a receiving coil circuit that includes a receiving coil and a capacitor; and a loading circuit that includes a loading coil that is magnetically coupled to the receiving coil to receive the AC power from the receiving coil and a load to which the AC power is supplied from the loading coil, the receiving coil circuit further including an adjustment coil whose axial direction is at substantially right angles to the direction of magnetic flux generated by the feeding coil. - View Dependent Claims (10, 11, 12)
-
-
13. A wireless power transmission system for feeding 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 system comprising:
-
a feeding coil circuit that includes the feeding coil; a power supply circuit that supplies AC power to the feeding coil; a receiving coil circuit that includes a receiving coil and a capacitor; and a loading circuit that includes a loading coil that is magnetically coupled to the receiving coil to receive the AC power from the receiving coil and a load to which the AC power is supplied from the loading coil, both or one of the feeding coil circuit and receiving coil circuit have an adjustment coil whose axial direction is at substantially right angles to the power feeding direction of the feeding coil.
-
Specification