Device handover
First Claim
1. A method comprising:
- causing a first transmitter to provide electrical power to a receiver via a first wireless resonant coupling link using a first oscillation frequency;
determining that a handover condition is met; and
in response to determining that the handover condition is met, facilitating a handover to a second transmitter, wherein the handover comprises;
engaging in a phase-determination process to determine a first phase at which the first transmitter should provide the electrical power to the receiver and a second phase at which the second transmitter should provide the electrical power to the receiver;
causing the first transmitter to provide the electrical power to the receiver at the determined first phase while also causing the second transmitter to provide the electrical power to the receiver at the determined second phase, wherein the second transmitter provides the electrical power to the receiver at the determined second phase via a second wireless resonant coupling link using a second oscillation frequency; and
after causing the first transmitter to provide the electrical power to the receiver at the determined first phase while causing the second transmitter to provide the electrical power to the receiver at the determined second phase, causing the first transmitter to no longer provide the electrical power to the receiver and causing the second transmitter to continue to provide the electrical power to the receiver.
1 Assignment
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Accused Products
Abstract
Described herein are methods and systems for facilitating a wireless power handover. In particular, a controller may cause a first transmitter to provide electrical power to a receiver. The controller may then determine that a handover condition is met and may responsively facilitate a handover to a second transmitter. During this handover, the controller may engage in a phase-determination process to determine first and second phases at which the first and second transmitters should respectively provide electrical power to the receiver. Once determined, the controller may then cause the first and second transmitters to respectively provide electrical power to the receiver at the first and second phases and at substantially the same time. Subsequently, the controller may cause the first transmitter to no longer provide electrical power to the receiver and the second transmitter to continue to provide electrical power to the receiver, thereby completing the handover.
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Citations
23 Claims
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1. A method comprising:
- causing a first transmitter to provide electrical power to a receiver via a first wireless resonant coupling link using a first oscillation frequency;
determining that a handover condition is met; andin response to determining that the handover condition is met, facilitating a handover to a second transmitter, wherein the handover comprises; engaging in a phase-determination process to determine a first phase at which the first transmitter should provide the electrical power to the receiver and a second phase at which the second transmitter should provide the electrical power to the receiver; causing the first transmitter to provide the electrical power to the receiver at the determined first phase while also causing the second transmitter to provide the electrical power to the receiver at the determined second phase, wherein the second transmitter provides the electrical power to the receiver at the determined second phase via a second wireless resonant coupling link using a second oscillation frequency; and after causing the first transmitter to provide the electrical power to the receiver at the determined first phase while causing the second transmitter to provide the electrical power to the receiver at the determined second phase, causing the first transmitter to no longer provide the electrical power to the receiver and causing the second transmitter to continue to provide the electrical power to the receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
- causing a first transmitter to provide electrical power to a receiver via a first wireless resonant coupling link using a first oscillation frequency;
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22. A wireless power transmission system comprising:
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a first transmitter; a second transmitter; and a controller configured to; cause the first transmitter to provide electrical power to a receiver via a first wireless resonant coupling link using a first oscillation frequency; determine that a handover condition is met; and in response to determining that the handover condition is met, facilitate a handover to the second transmitter, wherein the handover comprises; engaging in a phase-determination process to determine a first phase at which the first transmitter should provide the electrical power to the receiver and a second phase at which the second transmitter should provide the electrical power to the receiver; causing the first transmitter to provide the electrical power to the receiver at the determined first phase while also causing the second transmitter to provide the electrical power to the receiver at the determined second phase, wherein the second transmitter provides the electrical power to the receiver at the determined second phase via a second wireless resonant coupling link using a second oscillation frequency; and after causing the first transmitter to provide the electrical power to the receiver at the determined first phase while causing the second transmitter to provide the electrical power to the receiver at the determined second phase, causing the first transmitter to no longer provide the electrical power to the receiver and causing the second transmitter to continue to provide the electrical power to the receiver.
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23. A wireless power receiver comprising:
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at least one receive resonator that is configured to resonate at one or more oscillation frequencies and that is operable to be coupled to one or more transmit resonators respectively via one or more wireless resonant coupling links; one or more processors; a non-transitory computer readable medium; and program instructions stored on the non-transitory computer readable medium and executable by the one or more processors to; cause the at least one receive resonator to receive electrical power from a first transmit resonator of a wireless power transmission system; and engage in a phase-determination process during a handover of the at least one receive resonator to a second transmit resonator of the wireless power transmission system, wherein the phase-determination process is to determine a first phase at which the first transmit resonator should provide the electrical power to the at least one receive resonator during the handover and a second phase at which the second transmit resonator should provide the electrical power to the at least one receive resonator during the handover, wherein the at least one receive resonator no longer receives the electrical power from the first transmit resonator after the handover, and wherein the at least one receive resonator continues to receive the electrical power from the second transmit resonator after the handover.
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Specification