WIRELESS POWER TRANSMITTER, WIRELESS POWER RECEIVER AND WIRELESS POWER TRANSMISSION METHOD
First Claim
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1. A wireless power transmitter for wirelessly transmitting a power to a wireless power receiver, the wireless power transmitter comprising:
- a transmitting unit for transmitting a power supplied from a power source to the wireless power receiver using resonance; and
a detecting unit for measuring an input impedance seen to the transmitting unit at the power source to detect a variation of an output impedance of the wireless power receiver by using the measured input impedance.
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Abstract
Disclosed is a wireless power transmitter for wirelessly transmitting a power to a wireless power receiver. The wireless power transmitter includes a transmitting unit for transmitting a power supplied from a power source to the wireless power receiver using resonance, and a detecting unit for measuring an input impedance seen to the transmitting unit at the power source to detect a variation of an output impedance of the wireless power receiver by using the measured input impedance.
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Citations
20 Claims
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1. A wireless power transmitter for wirelessly transmitting a power to a wireless power receiver, the wireless power transmitter comprising:
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a transmitting unit for transmitting a power supplied from a power source to the wireless power receiver using resonance; and a detecting unit for measuring an input impedance seen to the transmitting unit at the power source to detect a variation of an output impedance of the wireless power receiver by using the measured input impedance. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless power receiver for receiving a power from a wireless power transmitter, the wireless power receiver comprising:
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an impedance varying unit for varying an output impedance of the wireless power receiver to vary an input impedance of the wireless power transmitter; a receiving unit for receiving a power according to a variation of the output impedance from the wireless power transmitter using resonance. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method for transmitting a power in a wireless power system which includes a wireless power transmitter and a wireless power receiver for wirelessly receiving the power from the wireless power transmitter, the method comprising:
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varying an output impedance of the wireless power receiver; detecting an input impedance of the wireless power transmitter according to a variation of the output impedance; and detecting the variation of the output impedance based on the input impedance. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification