Wireless power reception apparatus and method based on switching
First Claim
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1. A wireless power reception apparatus comprising:
- a reception (RX) resonator configured to form a resonance coupling with a first resonance period associated with an envelope of a power to receive the power from a transmission (TX) resonator;
a switch controller configured to;
set an off timing, corresponding to a time instant at which a maximum energy is stored in an inductor of the RX resonator, based on a sensed first voltage signal corresponding to the power received by the RX resonator during the first resonance period; and
generate, at intervals of the first resonance period, a control signal to deactivate the RX resonator at the set off timing; and
a switch configured to deactivate the RX resonator in response to the generated control signal.
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Abstract
A wireless power reception apparatus includes a reception (RX) resonator configured to form a resonance coupling with a first resonance period associated with an envelope of a power to receive the power from a transmission (TX) resonator; a switch controller configured to generate, at intervals of the first resonance period, a control signal to deactivate the RX resonator at an off timing corresponding to a time instant at which a maximum energy is stored in an inductor of the RX resonator; and a switch configured to deactivate the RX resonator in response to the control signal.
19 Citations
24 Claims
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1. A wireless power reception apparatus comprising:
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a reception (RX) resonator configured to form a resonance coupling with a first resonance period associated with an envelope of a power to receive the power from a transmission (TX) resonator; a switch controller configured to; set an off timing, corresponding to a time instant at which a maximum energy is stored in an inductor of the RX resonator, based on a sensed first voltage signal corresponding to the power received by the RX resonator during the first resonance period; and generate, at intervals of the first resonance period, a control signal to deactivate the RX resonator at the set off timing; and a switch configured to deactivate the RX resonator in response to the generated control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless power reception apparatus comprising:
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a reception (RX) resonator configured to form a resonance coupling with a first resonance period associated with an envelope of a power to receive the power from a transmission (TX) resonator; a switch controller configured to generate, at intervals of the first resonance period, a control signal to deactivate the RX resonator at an off timing corresponding to a time instant at which a maximum energy is stored in an inductor of the RX resonator; and a switch configured to deactivate the RX resonator in response to the control signal, wherein the switch controller is further configured to observe a second voltage signal applied to a load by deactivating the switch at intervals of at least one predetermined time instant in the first resonance period, and set, as an off timing, a time instant at which the observed second voltage signal has a maximum magnitude. - View Dependent Claims (12)
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13. A wireless power reception method comprising:
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forming a resonance coupling with a first resonance period associated with an envelope of a power to receive the power from a transmission (TX) resonator; setting an off timing, corresponding to a time instant at which a maximum energy is stored in an inductor of a reception (RX) resonator, based on a sensed first voltage signal corresponding to the power received by the RX resonator from the TX resonator during the first resonance period; generating, at intervals of the first resonance period, a control signal to deactivate the RX resonator at the set off timing; and deactivating the RX resonator in response to the generated control signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A wireless power reception method comprising:
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forming a resonance coupling with a first resonance period associated with an envelope of a power to receive the power from a transmission (TX) resonator; generating, at intervals of the first resonance period, a control signal to deactivate a reception (RX) resonator at an off timing corresponding to a time instant at which a maximum energy is stored in an inductor of the RX resonator; and deactivating the RX resonator in response to the control signal, wherein the generating comprises;
observing a second voltage signal applied to a load by deactivating the switch at intervals of at least one predetermined time instant in the first resonance period; and
setting, as an off timing, a time instant at which the observed second voltage signal has a maximum magnitude. - View Dependent Claims (24)
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Specification