Noncontact power-transmission coil, portable terminal and terminal charging device, planar coil magnetic layer formation device, and magnetic layer formation method
First Claim
Patent Images
1. A noncontact power-transmission coil, comprising:
- a planar coil, formed by winding a linear conductor in a spiral shape substantially in a single plane; and
,a magnetic layer, formed by applying a liquid-form magnetic solution in which magnetic particles are mixed with a binder solvent, so as to cover one planar portion of the planar coil and a side-face portion of the planar coil.
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Abstract
A noncontact power-transmission coil is provided. The noncontact power-transmission coil includes a planar coil and a magnetic layer. The planar coil is formed by winding a linear conductor in a spiral shape substantially in a single plane. The magnetic layer is formed by applying a liquid-form magnetic solution in which magnetic particles are mixed with a binder solvent, so as to cover one planar portion of the planar coil and a side-face portion of the planar coil.
121 Citations
30 Claims
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1. A noncontact power-transmission coil, comprising:
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a planar coil, formed by winding a linear conductor in a spiral shape substantially in a single plane; and
,a magnetic layer, formed by applying a liquid-form magnetic solution in which magnetic particles are mixed with a binder solvent, so as to cover one planar portion of the planar coil and a side-face portion of the planar coil. - View Dependent Claims (2, 3, 4, 5)
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6. A portable terminal, comprising:
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a noncontact power-transmission coil, having a rechargeable battery, a planar coil formed by winding a linear conductor in a spiral shape in substantially the same plane, and a magnetic layer formed by applying a liquid-form magnetic solution, in which magnetic particles are mixed with a binder solvent, so as to cover one planar portion of the planar coil and a side-face portion of the planar coil; and
,a charging control circuit, which executes control to charge the rechargeable battery with power received via the noncontact power-transmission coil. - View Dependent Claims (7, 8, 9, 10)
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11. A terminal charging device, comprising:
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a terminal mounting base, on which a predetermined portable terminal including a rechargeable battery is mounted; a noncontact power-transmission coil, having a planar coil, formed by winding a linear conductor in a spiral shape substantially in the same plane, and a magnetic layer formed by applying a liquid-form magnetic solution, in which magnetic particles are mixed into a binder solvent, so as to cover one planar portion of the planar coil and a side-face portion of the planar coil, and using electromagnetic induction with a coil installed in the predetermined portable terminal to charge the rechargeable battery of the portable terminal in a noncontact manner; and a power supply control unit which controls power supply to the noncontact power-transmission coil. - View Dependent Claims (12, 13, 14, 15)
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16. A planar coil magnetic layer formation device, comprising:
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a planar coil-fitting portion, having a bottom-face portion on which is placed the other planar-portion side of a planar coil formed by winding a linear conductor in a spiral shape substantially in the same plane, and an inner-wall portion which is larger than at least the outer-perimeter diameter of the planar coil, and in which is formed a depressed shape which is at least deeper than the thickness of the planar coil; and
,a magnetic solution application portion, which, in a state in which the planar coil is fitted into the planar coil-fitting portion, by applying from an aperture portion of the planar coil-fitting portion a magnetic solution in liquid form in which magnetic particles are mixed into a binder solvent, forms a magnetic layer covering one planar portion of the planar coil and a side-face portion of the planar coil. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A planar coil magnetic layer formation method, comprising the steps of:
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fitting a planar coil, formed by winding a linear conductor in a spiral shape substantially in the same plane, into a planar coil-fitting portion, having a bottom-face portion on which one planar portion side of the planar coil is placed and an inner-wall portion which is larger than at least the outer-perimeter diameter of the planar coil, and in which is formed a depressed shape which is at least deeper than the thickness of the planar coil; and
,forming a magnetic layer which covers one planar portion of the planar coil and a side-face portion of the planar coil, by applying, in a state in which the planar coil is fitted into the planar coil-fitting portion, a liquid-form magnetic solution in which magnetic particles are mixed into a binder solvent, from an aperture in the planar coil-fitting portion, using a magnetic solution application portion. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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Specification