WIRELESS POWER TRANSMISSION SYSTEM, AND METHOD OF CONTROLLING RESONANCE IMPEDANCE AND RESONANCE FREQUENCY OF WIRELESS POWER TRANSMISSION SYSTEM
First Claim
1. A wireless power transmitter comprising:
- a power generator configured to generate tracking power using a resonance frequency, the tracking power being used for a resonance impedance tracking or a resonance frequency tracking;
a source resonator configured to transmit the tracking power to a target resonator;
a mismatching detector configured to detect a mismatching between the target resonator and the source resonator; and
a controller configured to adjust the resonance frequency, or an impedance of a repeater resonator when the mismatching is detected, the repeater resonator being used to perform an impedance matching between the target resonator and the source resonator.
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Accused Products
Abstract
A wireless power transmission system, and a method for controlling a resonance impedance and a resonance frequency of the wireless power transmission system are provided. According to one aspect, a wireless power transmitter may include: a power generator configured to generate tracking power using a resonance frequency, the tracking power being used for a resonance frequency tracking; a source resonator configured to transmit the tracking power to a target resonator; a mismatching detector configured to detect a mismatching between the target resonator and the source resonator; and a controller configured to adjust the resonance frequency, or an impedance of a repeater resonator when the mismatching is detected, the repeater resonator being used to perform an impedance matching between the target resonator and the source resonator.
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Citations
26 Claims
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1. A wireless power transmitter comprising:
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a power generator configured to generate tracking power using a resonance frequency, the tracking power being used for a resonance impedance tracking or a resonance frequency tracking; a source resonator configured to transmit the tracking power to a target resonator; a mismatching detector configured to detect a mismatching between the target resonator and the source resonator; and a controller configured to adjust the resonance frequency, or an impedance of a repeater resonator when the mismatching is detected, the repeater resonator being used to perform an impedance matching between the target resonator and the source resonator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless power transmitter comprising:
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a power generator configured to generate a tracking power, the tracking power being used for a resonance impedance tracking or a resonance frequency tracking; a source resonator configured to transmit the tracking power to a target resonator; a communication unit configured to receive, from the wireless power receiver, information on an amount of a received power; and a controller configured to detect a mismatching between the target resonator and the source resonator, based on an amount of the tracking power, and the received information, and to adjust the resonance frequency, or an impedance of a repeater resonator when the mismatching is detected, the repeater resonator being used to perform an impedance matching between the target resonator and the source resonator. - View Dependent Claims (10)
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11. A wireless power receiver comprising:
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a target resonator configured to receive power from a source resonator via a repeater resonator; a detector configured to detect an amount of the received power; a communication unit configured to transmit, to a wireless power transmitter, information on the detected amount of the received power; a rectification unit configured to generate a direct current (DC) signal by rectifying an alternating current (AC) signal of the received power; and a DC-to-DC (DC/DC) converter configured to supply voltage of a predetermined level to a load by adjusting the level of the DC signal, wherein the target resonator forms a magnetic coupling with the source resonator, and an impedance matching between the target resonator and the source resonator is performed by the repeater resonator.
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12. A method of controlling a resonance frequency of a wireless power transmission system, the method comprising:
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generating tracking power, the tracking power being used for a resonance frequency tracking; transmitting the tracking power to a target resonator; detecting a mismatching between the target resonator and a source; and adjusting the resonance frequency when the mismatching is detected. - View Dependent Claims (13, 14, 15, 16)
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17. A method of controlling a resonance impedance of a wireless power transmission system, the method comprising:
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generating tracking power to be used for a resonance impedance tracking; transmitting the tracking power to a target resonator; detecting a reflected wave of the tracking power, and detecting a mismatching between the target resonator and a source resonator based on the detected reflected wave; and adjusting an impedance of a repeater resonator, when the mismatching is detected, the repeater resonator being used to perform an impedance matching between the target resonator and the source resonator. - View Dependent Claims (18, 19, 20)
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21. A method of controlling a resonance frequency of a wireless power transmission system, the method comprising:
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generating a tracking power, by converting direct current (DC) voltage to alternating current (AC) voltage using a resonance frequency, the tracking power being used for a resonance frequency tracking; transmitting the tracking power to a target resonator via a magnetic coupling; receiving, from a wireless power receiver, information on the amount of received power; and detecting a mismatching between the target resonator and a source resonator, based on an amount of the tracking power and the received information, and adjusting the resonance frequency when the mismatching is detected. - View Dependent Claims (22, 23)
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24. A method of controlling a resonance impedance of a wireless power transmission system, the method comprising:
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generating a tracking power, by converting direct current (DC) voltage to alternating current (AC) voltage using a resonance frequency, the tracking power being used for a resonance impedance tracking; transmitting the tracking power to a target resonator via a magnetic coupling; receiving, from a wireless power receiver, information on an amount of a received power; detecting a mismatching between the target resonator and a source resonator, based on an amount of the tracking power and the received information, and adjusting an impedance of a repeater resonator when the mismatching is detected, the repeater resonator being used to perform an impedance matching between the target resonator and the source resonator. - View Dependent Claims (25, 26)
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Specification