WIRELESS ENERGY TRANSFER APPARATUS AND METHOD FOR MANUFACTURING THE SAME
First Claim
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1. A wireless power transfer apparatus comprising:
- a transmitting coil into which a current having a predetermined frequency is introduced;
a receiving coil configured to supply a current induced by electromagnetic induction to a load; and
a transmission-side resonant coil and a reception-side resonant coil positioned between the transmitting coil and the receiving coil, configured to provide the current flowing in the transmitting coil to the receiving coil through electromagnetic induction, and spaced a predetermined distance from each other,wherein each of the resonant coils has a spiral structure.
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Abstract
A wireless power transfer apparatus includes: a transmitting coil into which a current having a predetermined frequency is introduced; a receiving coil configured to supply a current induced by electromagnetic induction to a load; and a transmission-side resonant coil and a reception-side resonant coil positioned between the transmitting coil and the receiving coil, configured to provide the current flowing in the transmitting coil to the receiving coil through electromagnetic induction, and spaced a predetermined distance from each other. Each of the resonant coils has a spiral structure.
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Citations
18 Claims
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1. A wireless power transfer apparatus comprising:
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a transmitting coil into which a current having a predetermined frequency is introduced; a receiving coil configured to supply a current induced by electromagnetic induction to a load; and a transmission-side resonant coil and a reception-side resonant coil positioned between the transmitting coil and the receiving coil, configured to provide the current flowing in the transmitting coil to the receiving coil through electromagnetic induction, and spaced a predetermined distance from each other, wherein each of the resonant coils has a spiral structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for manufacturing a resonant coil forming a wireless power transfer apparatus, comprising:
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winding a conducting plate having a predetermined line width and line thickness in a spiral shape; stacking two or more spiral layers in a helical shape such that each of the spiral layers is wound in the opposite direction of the winding direction of another spiral layer which is directly contacted; and coupling the respective spiral layers through a conducting plate such that magnetic fields generated by the currents induced between the spiral layers complement each other. - View Dependent Claims (10, 11, 12, 13)
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14. A method for tuning a resonant frequency in a resonant coil forming a wireless power transfer apparatus, the method comprising:
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a plurality of spiral layers constructed by winding conducting plates having a predetermined line width and line thickness in a spiral shape and stacked in a helical shape such that the winding direction of each of the spiral layers is set in the opposite direction of the winding direction of another spiral layer which is directly contacted; and a conducting plate coupling the spiral layers such that magnetic fields generated by currents induced between the spiral layers complement each other. - View Dependent Claims (15, 16, 17, 18)
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Specification