Wireless power feeder, wireless power receiver, and wireless power transmission system
First Claim
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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 the receiving coil, the feeder comprising:
- a feeding coil circuit that includes the feeding coil;
a power supply circuit that supplies AC power to the feeding coil; and
a feeding package including a first substrate and a second substrate disposed on the first substrate for accommodating a coil conductor of the feeding coil, whereinthe coil conductor of the feeding coil is wound into a series of loops for the first substrate and into another series of loops for the second substrate, each loop being separated from each other, and the coil conductor in the first substrate and the coil conductor in the second substrate being alternately arranged as viewed in an axial direction of the feeding coil,the feeding package includes a cut portion through which the coil conductor runs from the first substrate to the second substrate disposed on the first substrate,the coil conductor in the cut portion is inclined at 45 degrees or less with respect to the first substrate, andthe coil conductor comprises only a seamless single conductor running from the first substrate to the second substrate through the cut portion.
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Accused Products
Abstract
Power is fed from a feeding coil to a receiving coil using magnetic resonance. The feeding coil is wound in a first layer substrate 144 of a multilayer substrate 116 with a space provided between the coil conductor thereof and further wound in a second later substrate 146 with a space provided between the coil conductor thereof. The feeding coil is wound such that a coil conductor 106a in the first layer and a coil conductive wire 106b in the second layer do not overlap each other as viewed in the axial direction (z-axis direction).
56 Citations
18 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 the receiving coil, the feeder comprising:
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a feeding coil circuit that includes the feeding coil; a power supply circuit that supplies AC power to the feeding coil; and a feeding package including a first substrate and a second substrate disposed on the first substrate for accommodating a coil conductor of the feeding coil, wherein the coil conductor of the feeding coil is wound into a series of loops for the first substrate and into another series of loops for the second substrate, each loop being separated from each other, and the coil conductor in the first substrate and the coil conductor in the second substrate being alternately arranged as viewed in an axial direction of the feeding coil, the feeding package includes a cut portion through which the coil conductor runs from the first substrate to the second substrate disposed on the first substrate, the coil conductor in the cut portion is inclined at 45 degrees or less with respect to the first substrate, and the coil conductor comprises only a seamless single conductor running from the first substrate to the second substrate through the cut portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless power receiver that receives, at a receiving coil, AC power wirelessly fed from a feeding coil using a magnetic field resonance phenomenon between the feeding coil and the receiving coil, the receiver comprising:
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a receiving coil circuit that includes a receiving coil and a capacitor; 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 supply the AC power to a load; and a receiving package including a first substrate and a second substrate disposed on the first substrate for accommodating a coil conductor of the receiving coil, wherein the coil conductor of the receiving coil is wound into a series of loops for the first substrate and into another series of loops for the second substrate, each loop being separated from each other, and the coil conductor in the first substrate and the coil conductor in the second substrate being alternately arranged as viewed in an axial direction of the receiving coil, a receiving package includes a cut portion through which the coil conductor runs from the first substrate to the second substrate disposed on the first substrate, the coil conductor in the cut portion is inclined at 45 degrees or less with respect to the first substrate, and the coil conductor comprises only a seamless single conductor running from the first substrate to the second substrate through the cut portion. - View Dependent Claims (12, 13, 14, 15)
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16. 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 the receiving coil, the system comprising:
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a power supply circuit that supplies AC power to the feeding coil; a feeding coil circuit that includes the feeding coil; a receiving coil circuit that includes a receiving coil and a capacitor; 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 supply the AC power to a load; and a first coil package including a first substrate and a second substrate disposed on the first substrate for accommodating a coil conductor of one of the feeding coil and the receiving coil, wherein the coil conductor of the one of the feeding coil and the receiving coil is wound into a series of loops for the first substrate and into another series of loops for the second substrate, each loop being separated from each other, and the coil conductor in the first substrate and the coil conductor in the second substrate being alternately arranged as viewed in a power feeding direction, the first coil package includes a cut portion through which the coil conductor of the one of the feeding coil and the receiving coil runs from the first substrate to the second substrate disposed on the first substrate, the coil conductor in the cut portion of the first coil package is inclined at 45 degrees or less with respect to the first substrate, and the coil conductor of the one of the feeding coil and the receiving coil comprises only a seamless single conductor running from the first substrate to the second substrate through the cut portion. - View Dependent Claims (17, 18)
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Specification
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Current AssigneeTDK Corporation
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Original AssigneeTDK Corporation
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InventorsUrano, Takashi
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Primary Examiner(s)Fureman, Jared
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Assistant Examiner(s)Barnett, Joel
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Application NumberUS13/088,840Publication NumberTime in Patent Office1,324 DaysField of Search343/895US Class Current307/104CPC Class CodesH01F 38/14 Inductive couplings for wir...H02J 50/12 of the resonant typeH02J 50/502 the energy repeater being i...H04B 5/266 One coil at each side, e.g....H04B 5/79 for data transfer in combin...
