Wireless power transmission apparatus for high efficiency energy charging
First Claim
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1. A wireless power transmission apparatus for high efficiency energy charging, the apparatus comprising:
- a resonator configured to transmit power;
a power supply unit configured to supply power to the resonator;
a first switching unit configured to connect the resonator to the power supply unit such that the resonator receives power, and disconnect the resonator from the power supply unit such that the resonator does not receive power; and
a controller comprising a current sensor configured to sense an amount of current flowing into the resonator, and configured to control the first switching unit based on the amount of current flowing into the resonator wherein;
the current sensor comprisesa second switching unit configured to control a flow of current mirrored from the current flowing into the resonator, anda comparator configured to compare voltage corresponding to the mirrored current to predetermined voltage corresponding to an amount of predetermined current; and
the controller is configured to control a turning on and off of the first switching unit based on a result of the comparing.
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Abstract
A wireless power transmission apparatus for high efficiency energy charging, includes a resonator configured to transmit power, and a power supply unit configured to supply power to the resonator. The apparatus further includes a first switching unit configured to connect the resonator to the power supply unit, and disconnect the resonator from the power supply unit, and a controller configured to control the first switching unit based on an amount of current flowing into the resonator.
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Citations
18 Claims
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1. A wireless power transmission apparatus for high efficiency energy charging, the apparatus comprising:
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a resonator configured to transmit power; a power supply unit configured to supply power to the resonator; a first switching unit configured to connect the resonator to the power supply unit such that the resonator receives power, and disconnect the resonator from the power supply unit such that the resonator does not receive power; and a controller comprising a current sensor configured to sense an amount of current flowing into the resonator, and configured to control the first switching unit based on the amount of current flowing into the resonator wherein; the current sensor comprises a second switching unit configured to control a flow of current mirrored from the current flowing into the resonator, and a comparator configured to compare voltage corresponding to the mirrored current to predetermined voltage corresponding to an amount of predetermined current; and the controller is configured to control a turning on and off of the first switching unit based on a result of the comparing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless power transmission apparatus for high efficiency energy charging, the apparatus comprising:
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a resonator configured to transmit power; a power supply unit configured to supply power to the resonator, and comprising an input resistor; a switching unit configured to connect the resonator to the power supply unit such that the resonator receives power, and disconnect the resonator from the power supply unit such that the resonator does not receive power; a voltage controller configured to control voltage applied to the input resistor; and a controller configured to control the switching unit based on a result of comparing an amount of current flowing into the resonator to an amount of predetermined current wherein; the current sensor comprises a second switching unit configured to control a flow of current mirrored from the current flowing into the resonator, and a comparator configured to compare voltage corresponding to the mirrored current to predetermined voltage corresponding to an amount of predetermined current; and the controller is configured to control a turning on and off of the first switching unit based on a result of the comparing. - View Dependent Claims (11, 12)
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13. A wireless power transmission apparatus for high efficiency energy charging, the apparatus comprising:
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a resonator configured to transmit power; a power supply unit configured to supply power to the resonator; a switching unit configured to connect the resonator to the power supply unit such that the resonator receives power, and disconnect the resonator from the power supply unit such that the resonator does not receive power; a current controller configured to control the switching unit based on a result of comparing an amount of current flowing into the resonator to an amount of predetermined current wherein; the current sensor comprises a second switching unit configured to control a flow of current mirrored from the current flowing into the resonator, and a comparator configured to compare voltage corresponding to the mirrored current to predetermined voltage corresponding to an amount of predetermined current; and the controller is configured to control a turning on and off of the first switching unit based on a result of the comparing. - View Dependent Claims (14, 15, 16)
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17. An apparatus comprising:
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a resonator configured to transmit power; a power supply configured to supply power to the resonator; a switching unit configured to connect the resonator to the power supply such that the resonator receives power, and disconnect the resonator from the power supply such that the resonator does not receive power; a resistor disposed between the power supply and the switching unit; and a controller comprising a current sensor configured to sense a voltage applied to the resonator, and configured to control the switching unit based on the voltage applied to the resistor wherein; the current sensor comprises a second switching unit configured to control a flow of current mirrored from the current flowing into the resonator, and a comparator configured to compare voltage corresponding to the mirrored current to predetermined voltage corresponding to an amount of predetermined current; and the controller is configured to control a turning on and off of the first switching unit based on a result of the comparing. - View Dependent Claims (18)
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Specification