Feed unit, feed system, and electronic device
First Claim
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1. A feed unit, comprising:
- a power transmission section that includes a power transmission coil configured to transmit electric power by a magnetic field; and
an auxiliary resonance section that includes at least one resonator,wherein the at least one resonator includes an auxiliary coil of a plurality of windings,wherein the auxiliary coil is wound such that at least one gap is created between a first winding of the plurality of windings and a second winding of the plurality of windings,wherein the first winding is adjacent to the second winding,wherein a first width of the at least one gap in a first axis direction is larger than a second width of the at least one gap in a second axis direction, andwherein the second axis direction is orthogonal to the first axis direction.
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Abstract
Provided are a feed unit, a feed system, and an electronic device that enable transmission efficiency control according to the position of a device when electric power transmission using a magnetic field is performed between devices. The feed unit includes a power transmission section including a power transmission coil configured to perform electric power transmission using a magnetic field, and an auxiliary resonance section including one or a plurality of resonators. The resonator includes an auxiliary coil wound to form a gap in at least a partial region.
10 Citations
19 Claims
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1. A feed unit, comprising:
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a power transmission section that includes a power transmission coil configured to transmit electric power by a magnetic field; and an auxiliary resonance section that includes at least one resonator, wherein the at least one resonator includes an auxiliary coil of a plurality of windings, wherein the auxiliary coil is wound such that at least one gap is created between a first winding of the plurality of windings and a second winding of the plurality of windings, wherein the first winding is adjacent to the second winding, wherein a first width of the at least one gap in a first axis direction is larger than a second width of the at least one gap in a second axis direction, and wherein the second axis direction is orthogonal to the first axis direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A feed system, comprising:
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at least one electronic device that comprises a power receiving coil configured to receive electric power; and a feed unit configured to transmit the electric power to the at least one electronic device, wherein the feed unit comprises; a power transmission section, wherein the power transmission section includes a power transmission coil configured to transmit the electric power by a magnetic field; and an auxiliary resonance section that includes at least one resonator, wherein the at least one resonator includes an auxiliary coil of a plurality of windings, wherein the auxiliary coil is wound such that at least one gap is created between a first winding of the plurality of windings and a second winding of the plurality of windings, wherein the first winding is adjacent to the second winding; wherein a first width of the at least one gap in a first axis direction is larger than a second width of the at least one gap in a second axis direction, and wherein the second axis direction is orthogonal to the first axis direction. - View Dependent Claims (15, 16)
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17. An electronic device, comprising:
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a power receiving section that includes a power receiving coil configured to receive electric power transmitted by a magnetic field; and an auxiliary resonance section that includes at least one resonator, wherein the at least one resonator includes an auxiliary coil of a plurality of windings, wherein the auxiliary coil is wound such that at least one gap is created between a first winding of the plurality of windings and a second winding of the plurality of windings, wherein the first winding is adjacent to the second winding, wherein a first width of the at least one gap in a first axis direction is larger than a second width of the at least one gap in a second axis direction, and wherein the second axis direction is orthogonal to the first axis direction. - View Dependent Claims (18, 19)
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Specification