PRIMARY POWER SUPPLY TUNING NETWORK FOR TWO COIL DEVICE AND METHOD OF OPERATION
First Claim
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1. A wireless power transmitter comprising:
- a first conductive structure configured to generate a first field;
a second conductive structure in series with the first conductive structure and configured to generate a second field;
a source configured to generate a drive signal; and
a circuit configured to selectively route the drive signal to either one of the first or the second conductive structures or to both of the first and the second conductive structures, and further configured to maintain a tuning of the one or both of the first and second conductive structures driven by the drive signal.
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Abstract
This disclosure provides systems, methods and apparatus for connecting and operating an AC source to a load. In one aspect a power supply topology is provided which may be of particular use in the area of wireless power transfer. The topology allows for a single source to energize one or more conductive structures configured to generate a field, improving power transfer to a power receiver.
116 Citations
24 Claims
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1. A wireless power transmitter comprising:
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a first conductive structure configured to generate a first field; a second conductive structure in series with the first conductive structure and configured to generate a second field; a source configured to generate a drive signal; and a circuit configured to selectively route the drive signal to either one of the first or the second conductive structures or to both of the first and the second conductive structures, and further configured to maintain a tuning of the one or both of the first and second conductive structures driven by the drive signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of wirelessly transmitting power comprising:
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generating a drive signal with a source; and routing the drive signal dynamically during power transfer to either; energize a first conductive structure to generate a first field; energize a second conductive structure to generate a second field;
orenergize the first and the second conductive structures in series to generate a third field. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A wireless power transmitter comprising:
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means for generating a drive signal; and means for routing the drive signal dynamically during power transfer to either; energize a first means for generating a first field; energize a second means for generating a second field;
orenergize both of the first and the second means for generating to generate a third field.
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Specification