Twisted wire for power charging
First Claim
1. A device for generating or receiving wireless power via a magnetic field at a level sufficient to power or charge an electronic device, comprising:
- a first coil configured to generate or receive wireless power via a magnetic field, the first coil comprising one or more first windings each having a substantially rectangular cross-section with at least a first surface having a first width and a second surface orthogonal to the first surface having a second width greater than the first width, each of the first windings comprising;
a first segment having the first surface oriented horizontally and the second surface in the first segment oriented vertically relative to a surface of a housing structure; and
a second segment having the first surface in the second segment oriented vertically and the second surface in the second segment oriented horizontally relative to the surface of the housing structure, the second segment connected to the first segment via a twisted segment;
wherein the first segments of the first windings are arranged in a single-stacked arrangement in a first portion of the first coil, and the second segments of the first windings are arranged in a double-stacked arrangement in a second portion of the first coil.
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Accused Products
Abstract
Systems and methods for a twisted rectangular litz wire for generating or receiving wireless electrical power. The rectangular litz wire may be arranged as a DD coil having first and second co-planar loops. The loops may have a shared single-stacked inner portion and double-stacked outer portions. The litz wire may be twisted between the inner and outer portions, such that a width of the coils at the outer portions is defined by a first longer side of the wires, and a width of the coils at the inner portion is defined by a second shorter side of the wires. This arrangement may reduce a size of the DD coil may reducing a width of the shared inner portion.
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Citations
16 Claims
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1. A device for generating or receiving wireless power via a magnetic field at a level sufficient to power or charge an electronic device, comprising:
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a first coil configured to generate or receive wireless power via a magnetic field, the first coil comprising one or more first windings each having a substantially rectangular cross-section with at least a first surface having a first width and a second surface orthogonal to the first surface having a second width greater than the first width, each of the first windings comprising; a first segment having the first surface oriented horizontally and the second surface in the first segment oriented vertically relative to a surface of a housing structure; and a second segment having the first surface in the second segment oriented vertically and the second surface in the second segment oriented horizontally relative to the surface of the housing structure, the second segment connected to the first segment via a twisted segment; wherein the first segments of the first windings are arranged in a single-stacked arrangement in a first portion of the first coil, and the second segments of the first windings are arranged in a double-stacked arrangement in a second portion of the first coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for wirelessly transferring power, comprising:
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a first coil configured to wirelessly receive power via a magnetic field, the first coil comprising one or more litz wires each having a rectangular cross section with a first longer side and a second shorter side; and a second coil configured to wirelessly receive power via a magnetic field, the second coil comprising one or more of the litz wires and the positioned to be at least partially coplanar with the first loop; wherein each of the first and second loops comprises a plurality of litz wires, each having a rectangular cross section with a first longer side and a second shorter side, and wherein the one or more litz wires of the first and second coils are twisted such that a width of the first and second coils at a first location is defined by the first longer side of the one or more litz wires, and a width of the coils at a second location is defined by the second shorter side of the one or more litz wires. - View Dependent Claims (10, 11, 12, 13)
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14. A method of winding coils of a charging device for generating or receiving wireless power via a magnetic field at a level sufficient to power or charge an electronic device, comprising:
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positioning a first coil comprising one or more rectangular litz wires having a length greater than a width such that the length is parallel with a plane of the charging device in a first region of the charging device and perpendicular with the plane in a second region of the charging device; wherein the one or more rectangular litz wires are arranged in a double-stacked arrangement in the first region and a single-stacked arrangement in the second region. - View Dependent Claims (15, 16)
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Specification