TILED WIRELESS CHARGING COIL SOLUTION FOR EXTENDED ACTIVE AREA
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Abstract
The disclosure generally relates to a method and apparatus for wireless charging station. In one embodiment, the disclosure provides an overlapping (or tiled) layout of a plurality of coils. Each coil may have a symmetric or an asymmetric turn layout. The disclosure also provides design optimization techniques configured to determine the optimal tile overlap distance and/or coil size to provide a substantially uniform electro-magnetic field over the surface of the wireless charging station.
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Citations
45 Claims
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1-25. -25. (canceled)
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26. A transmitter charging station, comprising:
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a first coil having a first layout to provide a first resonant magnetic field; a second coil having a second layout to provide a second resonant magnetic field, the second coil overlapping the first coil; wherein the second coil overlaps the first coil with an overlap distance in a range of about 10-50% of a width of the first coil, wherein the width comprises a shortest distance across the center of the first coil between outer-most edges of an outer-most turn of the first coil; and wherein the outer-most turn of the first coil extends beyond an inner-most turn of the second coil in a direction of the overlap distance. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A coil array, comprising:
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a first coil having a first layout to provide a first resonant magnetic field; a second coil having a second layout to provide a second resonant magnetic field, the second coil overlapping the first coil; wherein the second coil overlaps the first coil with an overlap distance in a range of about 10-50% of a width of the first coil, wherein the width comprises a shortest distance across the center of the first coil between outer-most edges of an outer-most turn of the first coil; and wherein the outer-most turn of the first coil extends beyond an inner-most turn of the second coil in a direction of the overlap distance. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification