Multi-supply synchronization for wireless charging
First Claim
1. A method for wireless power transfer, comprising:
- energizing a first wireless power transfer device;
receiving, at the first wireless power transfer device, a synchronization signal indicative of a phase for generating a wireless charging field;
using a second wireless power transfer device to measure a mutually coupled flux between the first wireless power transfer device and the second wireless power transfer device;
determining an adjusted phase for generating the wireless charging field based, at least in part, on the received synchronization signal and one or more measurements taken at the first wireless power transfer device or the second wireless power transfer device, the one or more measurements including at least the mutually coupled flux, the one or more measurements indicating a phase difference between the first wireless power transfer device and the second wireless power transfer device; and
generating, at the first wireless power transfer device, the wireless charging field with the adjusted phase.
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Accused Products
Abstract
Certain aspects of the present disclosure are generally directed to apparatus and techniques for wirelessly charging a device. An exemplary method generally includes receiving, at a first wireless power transfer device, a synchronization signal indicative of a phase for generating a wireless charging field, determining an adjusted phase for generating the wireless charging field based, at least in part, on the received synchronization signal and one or more measurements taken at least one of the first wireless power transfer device or a second wireless power transfer device, wherein the one or more measurements are indicative of a phase difference between the first wireless power transfer device and the second wireless power transfer device, and generating, at the first wireless power transfer device, the wireless charging field with the adjusted phase.
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Citations
27 Claims
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1. A method for wireless power transfer, comprising:
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energizing a first wireless power transfer device; receiving, at the first wireless power transfer device, a synchronization signal indicative of a phase for generating a wireless charging field; using a second wireless power transfer device to measure a mutually coupled flux between the first wireless power transfer device and the second wireless power transfer device; determining an adjusted phase for generating the wireless charging field based, at least in part, on the received synchronization signal and one or more measurements taken at the first wireless power transfer device or the second wireless power transfer device, the one or more measurements including at least the mutually coupled flux, the one or more measurements indicating a phase difference between the first wireless power transfer device and the second wireless power transfer device; and generating, at the first wireless power transfer device, the wireless charging field with the adjusted phase. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for wireless power transfer, comprising:
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energizing a first wireless power transfer device; receiving, at the first wireless power transfer device, a synchronization signal indicative of a phase for generating a wireless charging field; measuring cross-coupled power transferred between the first wireless power transfer device and a second wireless power transfer device when the second wireless power transfer device is energized; determining an adjusted phase for generating the wireless charging field based, at least in part, on the received synchronization signal and one or more measurements taken at the first wireless power transfer device or a second wireless power transfer device, the one or more measurements including at least the cross-coupled power, the one or more measurements indicating a phase difference between the first wireless power transfer device and the second wireless power transfer device; and generating, at the first wireless power transfer device, the wireless charging field with the adjusted phase. - View Dependent Claims (8, 9)
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10. An apparatus for wireless power transfer, comprising:
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at least one processor configured to; energize a first wireless power transfer device; receive, at the first wireless power transfer device, a synchronization signal indicative of a phase for generating a wireless charging field; use a second wireless power transfer device to measure a mutually coupled flux between the first wireless power transfer device and the second wireless power transfer device; and determine an adjusted phase for generating the wireless charging field based, at least in part, on the received synchronization signal and one or more measurements taken at the first wireless power transfer device or the second wireless power transfer device, the one or more measurements including at least the mutually coupled flux, the one or more measurements indicating a phase difference between the first wireless power transfer device and the second wireless power transfer device; and a wireless power transfer element configured to generate, at the first wireless power transfer device, the wireless charging field with the adjusted phase. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An apparatus for wireless power transfer, comprising:
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at least one processor configured to; energize a first wireless power transfer device and a second wireless power transfer device; receive, at the first wireless power transfer device, a synchronization signal indicative of a phase for generating a wireless charging field; measure cross-coupled power transferred between the first wireless power transfer device and the second wireless power transfer device; and determine an adjusted phase for generating the wireless charging field based, at least in part, on the received synchronization signal and one or more measurements taken at the first wireless power transfer device or the second wireless power transfer device, the one or more measurements including at least the cross-coupled power, the one or more measurements indicating a phase difference between the first wireless power transfer device and the second wireless power transfer device; and a wireless power transfer element configured to generate, at the first wireless power transfer device, the wireless charging field with the adjusted phase. - View Dependent Claims (17, 18)
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19. An apparatus for wireless power transfer, comprising:
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means for energizing a first wireless power transfer device; means for receiving, at the first wireless power transfer device, a synchronization signal indicative of a phase for generating a wireless charging field; means for using a second wireless power transfer device to measure a mutually coupled flux between the first wireless power transfer device and the second wireless power transfer device; means for determining an adjusted phase for generating the wireless charging field based, at least in part, on the received synchronization signal and one or more measurements taken at the first wireless power transfer device or the second wireless power transfer device, the one or more measurements including at least the mutually coupled flux, the one or measurements indicating a phase difference between the first wireless power transfer device and the second wireless power transfer device; and means for generating, at the first wireless power transfer device, the wireless charging field with the adjusted phase. - View Dependent Claims (20, 21, 22, 23)
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24. A non-transitory computer-readable medium for wireless power transfer, comprising instructions, that when executed by at least one processor, cause the at least one processor to:
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energize a first wireless power transfer device; receive, at the first wireless power transfer device, a synchronization signal indicative of a phase for generating a wireless charging field; use a second wireless power transfer device to measure a mutually coupled flux between the first wireless power transfer device and the second wireless power transfer device; determine an adjusted phase for generating the wireless charging field based, at least in part, on the received synchronization signal and one or more measurements taken at the first wireless power transfer device or the second wireless power transfer device, the one or more measurements including the mutually coupled flux, the one or more measurements indicating a phase difference between the first wireless power transfer device and the second wireless power transfer device; and generate, at the first wireless power transfer device, the wireless charging field with the adjusted phase. - View Dependent Claims (27)
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25. An apparatus for wireless power transfer, comprising:
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means for energizing a first wireless power transfer device and a second wireless power transfer device; means for receiving, at the first wireless power transfer device, a synchronization signal indicative of a phase for generating a wireless charging field; means for measuring cross-coupled power transferred between the first wireless power transfer device and the second wireless power transfer device; means for determining an adjusted phase for generating the wireless charging field based, at least in part, on the received synchronization signal and one or more measurements taken at the first wireless power transfer device or the second wireless power transfer device, the one or more measurements including at least the cross-coupled power, the one or more measurements indicating a phase difference between the first wireless power transfer device and the second wireless power transfer device; and means for generating, at the first wireless power transfer device, the wireless charging field with the adjusted phase. - View Dependent Claims (26)
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Specification