Wireless power transmitter and method of transmitting power thereof
First Claim
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1. A wireless power transmitter to wirelessly transmit power to a wireless power receiver, the wireless power transmitter comprising:
- a transmission resonance unit to transmit the power to the wireless power receiver using resonance,wherein the transmission resonance unit comprises a plurality of resonant coils,wherein the plurality of resonant coils comprises;
an inner loop andan outer loop connected to the inner loop while surrounding the inner loop;
a switch unit configured to select at least one of the plurality of resonant coils corresponding to a region in which the wireless power receiver is detected; and
an inductor and a capacitor configured to constantly maintain a resonance frequency of the selected resonant coil for power transmission to the wireless power receiver.
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Abstract
Disclosed are a wireless power transmitter and a method of transmitting power thereof. The wireless power transmitter to wirelessly transmit power to a wireless power receiver includes a transmission coil to receive power from a power supply apparatus, and a transmission resonance unit to transmit the power received therein from the transmission coil to the wireless power receiver using resonance. The transmission resonance unit includes an inner loop, and an outer loop connected to the inner loop while surrounding the inner loop.
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Citations
16 Claims
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1. A wireless power transmitter to wirelessly transmit power to a wireless power receiver, the wireless power transmitter comprising:
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a transmission resonance unit to transmit the power to the wireless power receiver using resonance, wherein the transmission resonance unit comprises a plurality of resonant coils, wherein the plurality of resonant coils comprises; an inner loop and an outer loop connected to the inner loop while surrounding the inner loop; a switch unit configured to select at least one of the plurality of resonant coils corresponding to a region in which the wireless power receiver is detected; and an inductor and a capacitor configured to constantly maintain a resonance frequency of the selected resonant coil for power transmission to the wireless power receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 16)
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11. A method of transmitting power of a wireless power transmitter that wirelessly transmits power to a wireless power receiver, the method comprising:
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detecting an approaching state of the wireless power receiver; selecting at least one of a plurality of resonant coil corresponding to a region, in which the wireless power receiver is detected, according to a detection result; determining a change state of a resonance frequency of the selected resonant coil according to the selection of the resonant coil corresponding to the region in which the wireless power receiver is detected; and matching the resonance frequency of the selected resonant coil with a resonance frequency of a resonant coil of the wireless power receiver, if the resonance frequency of the selected resonant coil is changed; and transmitting the power to the wireless power receiver using resonance through the matched resonance frequency by the resonant coil corresponding to the region in which the wireless power receiver is detected. - View Dependent Claims (12, 14, 15)
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Specification