Wireless power transmission apparatus
First Claim
1. A wireless power transmission apparatus configured to perform power transmission from a power-supplying module to a power-receiving module by producing resonance and thereby varying a magnetic field, comprising:
- the power-supplying module having a coil-shaped power-supplying resonator;
the power-receiving module having a coil-shaped power-receiving resonator; and
a cylindrical magnetic member that covers at least a part of an inner circumferential surface of a coil shape of one of the resonators,at least one of an electronic circuit and a rechargeable battery being provided in a cylinder of the cylindrical magnetic member.
1 Assignment
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Accused Products
Abstract
A power-supplying module and a power-receiving module are positioned so that a coil surface of a power-supplying resonator in the power-supplying module and a coil surface of a power-receiving resonator in the power-receiving module face each other. On the inner circumferential surface sides of the coils of the power-supplying resonator and the power-receiving resonator, cylindrical magnetic members and which cover the entire inner circumferential surfaces of the coil of the power-supplying resonator and the coil of the power-receiving resonator are arranged. When power transmission between the power-supplying resonator and the power-receiving resonator is performed, while varying the magnetic field, magnetic field occurring around the power-supplying resonator and the power-receiving resonator is shielded by the magnetic members. This improves power transmission efficiency of power transmitted from the power-supplying module to the power-receiving module, as compared with a case of arranging no magnetic members.
17 Citations
9 Claims
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1. A wireless power transmission apparatus configured to perform power transmission from a power-supplying module to a power-receiving module by producing resonance and thereby varying a magnetic field, comprising:
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the power-supplying module having a coil-shaped power-supplying resonator; the power-receiving module having a coil-shaped power-receiving resonator; and a cylindrical magnetic member that covers at least a part of an inner circumferential surface of a coil shape of one of the resonators, at least one of an electronic circuit and a rechargeable battery being provided in a cylinder of the cylindrical magnetic member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification