WIRELESS POWER TRANSFER SYSTEM AND A LOAD APPARATUS IN THE SAME WIRELESS POWER TRANSFER SYSTEM
First Claim
Patent Images
1. A wireless power transfer system, comprising:
- a supply-side power supply coil;
a supply-side magnetic resonance coil;
a load-side power supply coil; and
a load-side magnetic resonance coil, whereinsaid supply-side magnetic resonance coil is excited, by supplying transmission electric powers of frequencies equal to magnetic resonance frequencies of said supply-side magnetic resonance coil and said load-side magnetic resonance coil to said supply-side power supply coil, thereby transferring an electric power, wirelessly, with applying a magnetic resonance phenomenon between said supply-side power supply coil and said load-side power supply coil, so as to take out the transmission electric power transferred to said supply-side magnetic resonance coil by said load-side power supply coil, and whereinsaid coils are so disposed that a distance between said supply-side magnetic resonance coil and said load-side power supply coil is shorter than a distance between said supply-side magnetic resonance coil and said load-side magnetic resonance coil.
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Abstract
In wireless power transfer with applying magnetic resonance therein, for suppressing deterioration of transfer efficiency, with lessening fluctuation of the resonance frequency when a distance between coils is close to, coils are so position that a supply-side power supply coil 101 and a load-side power supply coil 102 are inserted between a supply-side magnetic resonance coil 1 and a load-side magnetic resonance coil 2.
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Citations
11 Claims
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1. A wireless power transfer system, comprising:
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a supply-side power supply coil; a supply-side magnetic resonance coil; a load-side power supply coil; and a load-side magnetic resonance coil, wherein said supply-side magnetic resonance coil is excited, by supplying transmission electric powers of frequencies equal to magnetic resonance frequencies of said supply-side magnetic resonance coil and said load-side magnetic resonance coil to said supply-side power supply coil, thereby transferring an electric power, wirelessly, with applying a magnetic resonance phenomenon between said supply-side power supply coil and said load-side power supply coil, so as to take out the transmission electric power transferred to said supply-side magnetic resonance coil by said load-side power supply coil, and wherein said coils are so disposed that a distance between said supply-side magnetic resonance coil and said load-side power supply coil is shorter than a distance between said supply-side magnetic resonance coil and said load-side magnetic resonance coil. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
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2. A wireless power transfer system, comprising:
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a supply-side power supply coil; a supply-side magnetic resonance coil; a load-side power supply coil; and a load-side magnetic resonance coil, wherein said supply-side magnetic resonance coil is excited, by supplying transmission electric powers of frequencies equal to magnetic resonance frequencies of said supply-side magnetic resonance coil and said load-side magnetic resonance coil to said supply-side power supply coil, thereby transferring an electric power, wirelessly, with applying a magnetic resonance phenomenon between said supply-side power supply coil and said load-side power supply coil, so as to take out the transmission electric power transferred to said supply-side magnetic resonance coil by said load-side power supply coil, and wherein said coils are so disposed that a distance between said supply-side power supply coil and said load-side magnetic resonance coil is shorter than a distance between said supply-side magnetic resonance coil and said load-side magnetic resonance coil.
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10. A load apparatus in a wireless power transfer system, comprising:
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a power supply apparatus having a supply-side power supply coil and a supply-side magnetic resonance coil; and a load apparatus having a load-side power supply coil and a load-side magnetic resonance coil, wherein said supply-side magnetic resonance coil is excited, by supplying transmission electric powers of frequencies equal to magnetic resonance frequencies of said supply-side magnetic resonance coil and said load-side magnetic resonance coil to said supply-side power supply coil, thereby transferring an electric power, wirelessly, with applying a magnetic resonance phenomenon between said supply-side power supply coil and said load-side power supply coil, so as to take out the transmission electric power transferred to said supply-side magnetic resonance coil by said load-side power supply coil, wherein said load-side power supply coil and said load-side magnetic resonance coil are so disposed that a distance between said supply-side magnetic resonance coil and said load-side power supply coil is shorter than a distance between said supply-side magnetic resonance coil and said load-side magnetic resonance coil.
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11. A load apparatus in a wireless power transfer system, comprising:
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a power supply apparatus having a supply-side power supply coil and a supply-side magnetic resonance coil; and a load apparatus having a load-side power supply coil and a load-side magnetic resonance coil, wherein said supply-side magnetic resonance coil is excited, by supplying transmission electric powers of frequencies equal to magnetic resonance frequencies of said supply-side magnetic resonance coil and said load-side magnetic resonance coil to said supply-side power supply coil, thereby transferring an electric power, wirelessly, with applying a magnetic resonance phenomenon between said supply-side power supply coil and said load-side power supply coil, so as to take out the transmission electric power transferred to said supply-side magnetic resonance coil by said load-side power supply coil, wherein said load-side power supply coil and said load-side magnetic resonance coil are so disposed that a distance between said supply-side power supply coil and said load-side magnetic resonance coil is shorter than a distance between said supply-side magnetic resonance coil and said load-side magnetic resonance coil.
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Specification