Wireless power transmitter, wireless power receiver, and method of wirelessly receiving power
First Claim
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1. A wireless power receiver wirelessly receiving power from a wireless power transmitter, the wireless power receiver comprising:
- a receiving unit receiving the power from the wireless power transmitter using resonance; and
a rectifying unit rectifying the power received therein from the receiving unit to supply the power to a load side,wherein the rectifying unit changes an output impedance of the wireless power receiver in order to change an input current of the wireless power transmitter,wherein the rectifying unit comprises;
a bridge diode comprising four diodes connected to each other; and
a switch changing a flow of current inputted from the receiving unit to the bridge diode,wherein the bridge diode changes the output impedance as the toy of current is changed.
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Abstract
Disclosed are a wireless power transmitter, a wireless power receiver, and a method of wirelessly receiving power. The wireless power receiver includes a receiving unit receiving the power from the wireless power transmitter using resonance, and a rectifying unit rectifying the power received therein from the receiving unit to supply the power to a load side. The rectifying unit changes an output impedance of the wireless power receiver in order to change an input current of the wireless power transmitter.
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Citations
20 Claims
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1. A wireless power receiver wirelessly receiving power from a wireless power transmitter, the wireless power receiver comprising:
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a receiving unit receiving the power from the wireless power transmitter using resonance; and a rectifying unit rectifying the power received therein from the receiving unit to supply the power to a load side, wherein the rectifying unit changes an output impedance of the wireless power receiver in order to change an input current of the wireless power transmitter, wherein the rectifying unit comprises; a bridge diode comprising four diodes connected to each other; and a switch changing a flow of current inputted from the receiving unit to the bridge diode, wherein the bridge diode changes the output impedance as the toy of current is changed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless power transmitter wirelessly transmitting power to a wireless power receiver, the wireless power transmitter comprises:
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a transmission unit transmitting power, which is supplied from a power source, to the wireless power receiver using resonance; and a detecting unit detecting input current of the wireless power transmitter to detect a change of an output impedance of the wireless power receiver by using the detected input current, wherein the wireless power receiver changes the output impedance in order to change the input current, wherein the wireless power receiver comprises; a bridge diode comprising four diodes connected to each other; and a switch changing a flow of current inputted to the bridge diode, wherein the bridge diode changes the output impedance as the flow of current inputted to the bridge diode is changed. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of receiving power of a wireless power receiver for wirelessly receiving the power from a wireless power transmitter, the method comprising:
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determining state information of the wireless power receiver to be transmitted to the wireless power transmitter; changing an output impedance of the wireless power receiver according to the determined state information; and receiving changed power from the wireless power transmitter according to the changed output impedance, wherein the wireless power receiver comprises; a bride diode comprising four diodes connected to each other; and a switch changing a flow of current inputted to the bridge diode, wherein the bridge diode changes the output impedance as the flow of current inputted to the bridge diode is changed. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification