Wireless power transmission apparatus and method
First Claim
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1. A wireless power transmission method comprising:
- operating a source resonator among a source resonators;
detecting a waveform while the source resonator resonates;
determining a source resonator for wireless power transmission based on an attenuation ratio of the detected waveform during discharging and a comparison of a shape of the detected waveform with other waveforms, wherein the attenuation ratio is a ratio of an amplitude of an envelope attenuation from an initial point in time to a predetermined point in time during a detection time, to an amplitude of the envelope at the initial point in time; and
wirelessly transmitting power to a target resonator using the determined source resonator.
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Abstract
A wireless power transmission method includes operating at least one source resonator among a plurality of source resonators; detecting a waveform while the at least one source resonator resonates; determining, based on the detected waveform, a source resonator for wireless power transmission; and wirelessly transmitting power to a target resonator using the determined source resonator.
16 Citations
19 Claims
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1. A wireless power transmission method comprising:
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operating a source resonator among a source resonators; detecting a waveform while the source resonator resonates; determining a source resonator for wireless power transmission based on an attenuation ratio of the detected waveform during discharging and a comparison of a shape of the detected waveform with other waveforms, wherein the attenuation ratio is a ratio of an amplitude of an envelope attenuation from an initial point in time to a predetermined point in time during a detection time, to an amplitude of the envelope at the initial point in time; and wirelessly transmitting power to a target resonator using the determined source resonator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless power transmission apparatus comprising:
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source resonators; a switch configured to operate a source resonator among the source resonators by connecting the source resonator to a power source; a detector configured to detect a waveform while the source resonator resonates; and a switch controller configured to; determine a source resonator for wireless power transmission based on an attenuation ratio of the detected waveform during discharging and a comparison of a shape of the detected waveform with other waveforms, wherein the attenuation ratio is a ratio of an amplitude of an envelope attenuated from an initial point in time to a predetermined point in time during a detection time to an amplitude of the envelope at the initial point in time, and control the switch to wirelessly transmit power to a target resonator using the determined source resonator. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A wireless power transmission apparatus comprising:
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source resonators; a switch configured to operate a source resonator among the source resonators by connecting the source resonator to a power source; a detector configured to detect a waveform while the source resonator resonates; and a switch controller configured to; determine, based on the detected waveform, whether a target resonator forming resonance coupling with a source resonator is present based on an attenuation ratio of the detected waveform during discharging, wherein the attenuation ratio is a ratio of an amplitude of an envelope attenuated from an initial point in time to a predetermined point in time during a detection time to an amplitude of the envelope at the initial point in time, and control the switch to wirelessly transmit power to the target resonator using the determined source resonator in response to the target resonator being preset, wherein the switch controller is further configured to determine whether the target resonator is present based on a comparison of a shape of the detected waveform with other waveforms, and to transmit power to a neighboring source resonator in response to the target resonator being determined not to be preset.
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Specification