Wireless power transmitter configured to transmit power waves to a predicted location of a moving wireless power receiver
First Claim
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1. A method, comprising:
- at a transmitter with a processor, a wireless communications component, and a plurality of antennas separate and distinct from the wireless communications component;
transmitting, via the plurality of antennas, one or more power waves into a transmission field of the transmitter;
receiving, via the wireless communications component, feedback data from a wireless power receiver indicating receipt of at least some of the one or more power waves at an initial location within the transmission field of the transmitter;
detecting movement of the wireless power receiver away from the initial location;
in response to detecting the movement of the wireless power receiver away from the initial location, determining, by the processor, (i) a predicted location of the wireless power receiver and (ii) a time at which the wireless power receiver is estimated to reach the predicted location based on the movement of the wireless power receiver away from the initial location; and
transmitting, via the plurality of antennas and at the determined time, higher power level power waves that converge and constructively interfere at the predicted location of the wireless power receiver.
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Abstract
Embodiments disclosed herein may generate and transmit power waves that, as result of their physical waveform characteristics (e.g., frequency, amplitude, phase, gain, direction), converge at a predetermined location in a transmission field to generate a pocket of energy. Receivers associated with an electronic device being powered by the wireless charging system, may extract energy from these pockets of energy and then convert that energy into usable electric power for the electronic device associated with a receiver. The pockets of energy may manifest as a three-dimensional field (e.g., transmission field) where energy may be harvested by a receiver positioned within or nearby the pocket of energy.
965 Citations
19 Claims
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1. A method, comprising:
at a transmitter with a processor, a wireless communications component, and a plurality of antennas separate and distinct from the wireless communications component; transmitting, via the plurality of antennas, one or more power waves into a transmission field of the transmitter; receiving, via the wireless communications component, feedback data from a wireless power receiver indicating receipt of at least some of the one or more power waves at an initial location within the transmission field of the transmitter; detecting movement of the wireless power receiver away from the initial location; in response to detecting the movement of the wireless power receiver away from the initial location, determining, by the processor, (i) a predicted location of the wireless power receiver and (ii) a time at which the wireless power receiver is estimated to reach the predicted location based on the movement of the wireless power receiver away from the initial location; and transmitting, via the plurality of antennas and at the determined time, higher power level power waves that converge and constructively interfere at the predicted location of the wireless power receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A transmitter, comprising:
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a plurality of antennas configured to transmit one or more power waves into a transmission field of the transmitter, a wireless communications component separate and distinct from the plurality of antennas configured to receive feedback data from a wireless power receiver indicating receipt of at least some of the one or more power waves at an initial location within the transmission field of the transmitter; and a processor configured to; detect movement of the wireless power receiver away from the initial location; in response to detecting the movement of the wireless power receiver away from the initial location, determine (i) a predicted location of the wireless power receiver and (ii) a time at which the wireless power receiver is estimated to reach the predicted location based on the movement of the wireless power receiver away from the initial location; and cause transmission, via the plurality of antennas and at the determined time, higher power level power waves that converge and constructively interfere at the predicted location of the wireless power receiver. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A non-transitory, computer readable storage medium storing one or more programs, the one or more programs comprising instructions that, when executed by a transmitter with a processor, a wireless communications component, and a plurality of antennas separate and distinct from the wireless communications component, cause the transmitter to:
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transmit one or more power waves into a transmission field of the transmitter; receive feedback data from a wireless power receiver indicating receipt of at least some of the one or more power waves at an initial location within the transmission field of the transmitter; detect movement of the wireless power receiver away from the initial location; in response to detecting the movement of the wireless power receiver away from the initial location, determine (i) a predicted location of the wireless power receiver and (ii) a time at which the wireless power receiver is estimated to reach the predicted location based on the movement of the wireless power receiver away from the initial location; and transmit, via the plurality of antennas and at the determined time, higher power level power waves that converge and constructively interfere at the predicted location of the wireless power receiver.
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Specification