Wireless power transmission apparatus and method therefor
First Claim
1. A wireless power transmitter comprising:
- a power transmitting module configured to generate power;
a transmit antenna configured to transmit the power to a wireless power receiver using a magnetic field of a first frequency band;
an in-band communication module connected to the transmit antenna and configured to perform communication with the wireless power receiver on the first frequency band;
a communication antenna configured to transmit and receive a communication signal of a second frequency band;
an out-band communication module connected to the communication antenna and configured to perform communication with the wireless power receiver on the second frequency band; and
a controller configured to control overall operations of the wireless power transmitter and to control a wireless communication to be performed by at least the in-band communication module or the out-band communication module.
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Abstract
The present invention relates to a wireless power transmission apparatus and a method therefor. The present invention provides a wireless power transmission apparatus including: a power transmission module; a first communication module; a second communication module; and a controller for searching out a first wireless power reception device performing wireless power transmission/reception, transmitting a second magnetic field signal of a second frequency band through the power transmission module, sensing a second response signal to the second magnetic field signal through the second communication module, and searching out a second wireless power reception device performing wireless power transmission/reception by means of the second frequency band according to whether the second response signal is received.
19 Citations
20 Claims
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1. A wireless power transmitter comprising:
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a power transmitting module configured to generate power; a transmit antenna configured to transmit the power to a wireless power receiver using a magnetic field of a first frequency band; an in-band communication module connected to the transmit antenna and configured to perform communication with the wireless power receiver on the first frequency band; a communication antenna configured to transmit and receive a communication signal of a second frequency band; an out-band communication module connected to the communication antenna and configured to perform communication with the wireless power receiver on the second frequency band; and a controller configured to control overall operations of the wireless power transmitter and to control a wireless communication to be performed by at least the in-band communication module or the out-band communication module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 18)
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8. A wireless power transmission method of a wireless power transmitter comprising:
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transmit a first magnetic field signal of a first frequency band by using a transmit antenna, wherein the transmit antenna is configured to transmit power using a magnetic field of the first frequency band; detect a second magnetic field signal of the first frequency band by using the transmit antenna; determine whether a wireless power receiver which receives the first magnetic field signal is capable of communicating with the wireless power transmitter on a second frequency band based on the second magnetic field signal; transmit a communication signal of a second frequency band through a communication antenna based on the determination; and transmit wireless power by using the transmit antenna based on the communication signal. - View Dependent Claims (9, 10, 11, 12, 19)
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13. A wireless power receiver comprising:
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a receive antenna configured to receive wireless power from a wireless power transmitter using a magnetic field of a first frequency band and to perform communication with the wireless power transmitter on the first frequency band; a communication antenna configured to perform communication with the wireless power transmitter on a second frequency band; a communication module connected to at least one of the receive antenna or the communication antenna, and configured to perform at least one of in-band communication or out-band communication with the wireless power transmitter; a controller configured to control overall operations of the wireless power receiver and to control communication to be performed by the in-band communication or the out-band communication; a rectifier configured to rectify the wireless power by converting AC into DC; and a DC-DC converter configured to convert a voltage of the rectified DC into a desired level. - View Dependent Claims (14, 15, 16, 17, 20)
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Specification