ELECTRIC DEVICE, WIRELESS POWER TRANSMISSION DEVICE, AND POWER TRANSMISSION METHOD THEREOF
First Claim
1. A wireless power transmission device, comprising:
- a power coil in which a high frequency current is applied;
a transmission coil in which the high frequency current is induced by magnetic induction, the transmission coil configured to generate an non-radiative electromagnetic wave when the transmission coil has the same resonant frequency as an at least one external target device; and
a resonant frequency regulator configured to regulate the resonant frequency of the transmission coil.
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Accused Products
Abstract
Provided is a wireless power transmission device. The wireless power transmission device includes a power coil in which a high frequency current is applied, a transmission coil in which the high frequency current is induced by magnetic induction, the transmission coil configured to generate an non-radiative electromagnetic wave when the transmission coil has the same resonant frequency as an at least one external target device, and a resonant frequency regulator configured to regulate the resonant frequency of the transmission coil. The wireless power transmission device can transmit the power when it has the same resonant frequency as the target device. Therefore, the overheating due to an eddy current may not occur, and the design may be easily varied.
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Citations
4 Claims
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1. A wireless power transmission device, comprising:
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a power coil in which a high frequency current is applied; a transmission coil in which the high frequency current is induced by magnetic induction, the transmission coil configured to generate an non-radiative electromagnetic wave when the transmission coil has the same resonant frequency as an at least one external target device; and a resonant frequency regulator configured to regulate the resonant frequency of the transmission coil. - View Dependent Claims (2, 3)
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4. An electric device for receiving a power from a wireless power transmission device, comprising:
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a receiving coil is inserted into a PC board 211 instantly melted using ultrasonic waves which is configured to receive the power through a non-radiative electromagnetic wave generated from the wireless power transmission device when the receiving coil has the same resonant frequency as the wireless power transmission device; and a loading coil configured to receive the power from the receiving coil by a magnetic induction to supply the power to each of target devices, wherein the receiving coil has a spiral structure.
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Specification