Wireless charging coil
First Claim
Patent Images
1. A wireless charging coil comprising:
- a first stamped coil having a first spiral trace with a rectangular cross-section, the first spiral trace defining a first space between windings, the first spiral trace having a width that varies along a length of the first stamped coil; and
a second stamped coil having a second spiral trace with a rectangular cross-section, the second spiral trace defining a second space between windings, the second spiral trace having a width that varies along a length of the second stamped coil,the first stamped coil and second stamped coil positioned in the same plane and interconnected with one another, the first stamped coil positioned within the second space of the second stamped coil, and the second stamped coil positioned within the first space of the first stamped coil, when assembled the first spiral trace and the second spiral trace have a fill ratio greater than 65%.
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Abstract
A wireless charging coil is provided herein. The wireless charging coil comprising a first stamped coil having a first spiral trace, the first spiral trace defining a first space between windings, and a second stamped coil having a second spiral trace, the second spiral trace defining a second space between windings, wherein the first stamped coil and second stamped coil are planar to and interconnected with one another, such that the first stamped coil is positioned within the second space of the second stamped coil, and the second stamped coil is positioned within the first space of the first stamped coil.
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Citations
9 Claims
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1. A wireless charging coil comprising:
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a first stamped coil having a first spiral trace with a rectangular cross-section, the first spiral trace defining a first space between windings, the first spiral trace having a width that varies along a length of the first stamped coil; and a second stamped coil having a second spiral trace with a rectangular cross-section, the second spiral trace defining a second space between windings, the second spiral trace having a width that varies along a length of the second stamped coil, the first stamped coil and second stamped coil positioned in the same plane and interconnected with one another, the first stamped coil positioned within the second space of the second stamped coil, and the second stamped coil positioned within the first space of the first stamped coil, when assembled the first spiral trace and the second spiral trace have a fill ratio greater than 65%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification