Wireless power transmission and reception apparatus having resonance frequency stabilization circuit and method thereof
First Claim
1. A wireless power transmission apparatus for wirelessly transmitting power to a wireless power reception apparatus electromagnetically coupled to the wireless power reception apparatus, the wireless power transmission apparatus comprising:
- a power generator for generating power having a fixed oscillation frequency;
a power transmission resonator, which has a resonance frequency identical to the oscillation frequency, for wirelessly transmitting the power generated by the power generator to the wireless power reception apparatus; and
a power transmission resonance frequency controller configured to monitor a change of the resonance frequency of the power wirelessly transmitted from the power transmission resonator, and to control the resonance frequency of the power transmission resonator based on the change of the resonance frequency of the power transmission resonator,wherein the power transmission resonance frequency controller comprises an LC tuner, a monitoring resonator, a matching circuit for processing impedance matching of the monitoring resonator, and an LC tuner controller connected to the matching circuit, andwherein the LC tuner controller checks a power value input through the monitoring resonator and controls the LC tuner according to an LC value corresponding to a maximum power value.
1 Assignment
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Accused Products
Abstract
A wireless power transmission apparatus and method for wirelessly transmitting power to a wireless power reception apparatus electromagnetically coupled to the wireless power reception apparatus and supplying power for loads of the wireless power reception apparatus is provided. The apparatus includes a power generator for generating power having a fixed oscillation frequency; a power transmission resonator, which has a resonance frequency identical to the oscillation frequency, for wirelessly transmitting the power generated by the power generator to the wireless power reception apparatus; and a power transmission resonance frequency controller for controlling the resonance frequency of the power transmission resonator in response to a change of the resonance frequency of the power transmission resonator.
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Citations
16 Claims
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1. A wireless power transmission apparatus for wirelessly transmitting power to a wireless power reception apparatus electromagnetically coupled to the wireless power reception apparatus, the wireless power transmission apparatus comprising:
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a power generator for generating power having a fixed oscillation frequency; a power transmission resonator, which has a resonance frequency identical to the oscillation frequency, for wirelessly transmitting the power generated by the power generator to the wireless power reception apparatus; and a power transmission resonance frequency controller configured to monitor a change of the resonance frequency of the power wirelessly transmitted from the power transmission resonator, and to control the resonance frequency of the power transmission resonator based on the change of the resonance frequency of the power transmission resonator, wherein the power transmission resonance frequency controller comprises an LC tuner, a monitoring resonator, a matching circuit for processing impedance matching of the monitoring resonator, and an LC tuner controller connected to the matching circuit, and wherein the LC tuner controller checks a power value input through the monitoring resonator and controls the LC tuner according to an LC value corresponding to a maximum power value. - View Dependent Claims (2, 3, 4)
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5. A wireless power reception apparatus for wirelessly receiving power from a wireless power transmission apparatus electromagnetically coupled to the wireless power transmission apparatus, the wireless power reception apparatus comprising:
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a power reception resonator for setting a resonance frequency of the wireless power reception apparatus to be identical to a resonance frequency of the wireless power transmission apparatus and receiving power from a power transmission resonator of the wireless power transmission apparatus through coupling with the power transmission resonator; and a power reception resonance frequency controller for sensing a change of the resonance frequency of power supplied from the power reception resonator to loads and controlling the resonance frequency of the power reception resonator, wherein the power reception resonance frequency controller comprises an LC tuner, a monitoring resonator, a matching circuit for processing impedance matching of the monitoring resonator, and an LC tuner controller connected to the matching circuit, and wherein the LC tuner controller checks a power value input through the monitoring resonator and controls the LC tuner according to an LC value corresponding to a maximum power value. - View Dependent Claims (6, 7, 8)
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9. A method performed in a wireless power transmission apparatus for wirelessly transmitting power to a wireless power reception apparatus electromagnetically coupled to the wireless power reception apparatus, the method comprising:
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generating power having a fixed oscillation frequency; wirelessly transmitting the power generated by the power generator to the wireless power reception apparatus through a resonance frequency identical to the oscillation frequency; monitoring a change of the resonance frequency of the power wirelessly transmitted from a power transmission resonator; controlling the resonance frequency of the power transmission resonator based on the change of the resonance frequency of the power wirelessly transmitted from the power transmission resonator; and checking, by an LC tuner controller connected to a matching circuit, a power value input through a monitoring resonator, and controlling the LC tuner according to an LC value corresponding to a maximum power value. - View Dependent Claims (10, 11, 12)
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13. A method performed in a wireless power reception apparatus for wirelessly receiving power from a wireless power transmission apparatus electromagnetically coupled to the wireless power transmission apparatus, the method comprising:
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setting a resonance frequency of the wireless power reception apparatus to be identical to a resonance frequency of the wireless power transmission apparatus and receiving power from a power transmission resonator of the wireless power transmission apparatus through coupling with the power transmission resonator; and sensing a change of the resonance frequency of power supplied from the power reception resonator to loads; controlling the resonance frequency of the power reception resonator; and controlling an LC tuner according to an LC value corresponding to a maximum power value. - View Dependent Claims (14, 15, 16)
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Specification