Wireless power feeder, wireless power receiver, and wireless power transmission system, and coil
First Claim
1. A wireless power feeder that wirelessly feeds power from a feeding coil to a receiving coil using a magnetic field resonance phenomenon between the feeding coil and receiving coil, said feeder comprising:
- the feeding coil constructed in a rotatable manner; and
a power transmission control circuit that supplies AC power to the feeding coil so as to make the feeding coil feed the AC power to the receiving coil,the feeding coil being constructed such that magnetic characteristics thereof in a circumferential direction are made non-uniform.
2 Assignments
0 Petitions
Accused Products
Abstract
A wireless power feeder feeds power from a feeding coil to a receiving coil by wireless using a magnetic field resonance phenomenon. The feeding coil is constructed in a rotatable manner. A power transmission control circuit that supplies AC power to the feeding coil so as to make the feeding coil feed the AC power to the receiving coil. The feeding coil is constructed such that the magnetic characteristics thereof in the circumferential direction are made non-uniform. Concretely, a magnetic body is installed at only a part of the circumference of the feeding coil to make the magnetic characteristics of the feeding coil in the circumferential direction non-uniform.
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Citations
10 Claims
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1. A wireless power feeder that wirelessly feeds power from a feeding coil to a receiving coil using a magnetic field resonance phenomenon between the feeding coil and receiving coil, said feeder comprising:
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the feeding coil constructed in a rotatable manner; and a power transmission control circuit that supplies AC power to the feeding coil so as to make the feeding coil feed the AC power to the receiving coil, the feeding coil being constructed such that magnetic characteristics thereof in a circumferential direction are made non-uniform. - View Dependent Claims (2, 3)
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4. A wireless power receiver that wirelessly receives, at a receiving coil, AC power fed from a feeding coil using a magnetic field resonance phenomenon between the feeding coil and receiving coil, said receiver comprising:
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the receiving coil constructed in a rotatable manner; and a loading circuit including a loading coil that is magnetically coupled to the receiving coil to receive the AC power from the receiving coil and a load that receives the AC power from the loading coil, the receiving coil being constructed such that magnetic characteristics thereof in a circumferential direction thereof are made non-uniform. - View Dependent Claims (5, 6)
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7. A wireless power transmission system for wirelessly feeding power from a feeding coil to a receiving coil using a magnetic field resonance phenomenon between the feeding coil and receiving coil, said system comprising:
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a wireless power feeder and a wireless power receiver, the wireless power feeder including; the feeding coil; and a power transmission control circuit that supplies AC power to the feeding coil so as to make the feeding coil feed the AC power to the receiving coil, the wireless power receiver including; the receiving coil; and a loading circuit including a loading coil that is magnetically coupled to the receiving coil to receive the AC power from the receiving coil and a load that receives the AC power from the loading coil, and at least one of the feeding and receiving coils being constructed in a rotatable manner and constructed as a non-uniform type coil in which magnetic characteristics thereof in a circumferential direction are non-uniform. - View Dependent Claims (8, 9, 10)
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Specification