TILED WIRELESS CHARGING COIL SOLUTION FOR EXTENDED ACTIVE AREA
First Claim
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1. A transmitter charging station, comprising:
- a first coil having a first layout geometry to provide a first resonant magnetic field;
a second coil having a second layout geometry to provide a second resonant magnetic field, the second coil overlapping the first coil such that a combination of the first and the second magnetic fields provides a substantially uniform magnetic field above an overlapping plane of the first and the second coils.
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Abstract
The disclosure generally relates to as 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
25 Claims
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1. A transmitter charging station, comprising:
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a first coil having a first layout geometry to provide a first resonant magnetic field; a second coil having a second layout geometry to provide a second resonant magnetic field, the second coil overlapping the first coil such that a combination of the first and the second magnetic fields provides a substantially uniform magnetic field above an overlapping plane of the first and the second coils. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless charging station, comprising:
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a first cod having a first resonance frequency tuner; a second roil having a second resonance frequency tuner; a capacitor connecting the first and the second coils; a power source connected to the first coil and the second coil; and a controller to configure at least one of the first Or the second frequency tuners to provide substantially similar resonance frequency from each of the first and the second coils. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method to provide a substantially uniform magnetic field over a power transmission unit (PTU), the method comprising:
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forming a first coil to provide a first resonance frequency; forming a second coil to provide a second resonance frequency; tuning one or more of the first coil or the second coil to provide, substantially similar resonance frequencies; overlapping first and the second coils to provide a substantially uniform magnetic field over the first and the second coils. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification