Wireless power transmission apparatus and method therefor
First Claim
1. A method of receiving wireless power by a wireless power receiver, the method comprising:
- receiving a scanning signal from a wireless power transmitter through any one of a magnetic field of a first frequency band which complies with a first wireless charging standard and a magnetic field of a second frequency band which complies with a second wireless charging standard;
in response to the scanning signal, transmitting a first response signal if the wireless power receiver complies with the first wireless charging standard or transmitting a second response signal if the wireless power receiver complies with the second wireless charging standard;
receiving from the wireless power transmitter a request signal to request for information of the wireless power receiver, wherein both the request signal and the information of the wireless power receiver are defined by the same wireless charging standard;
transmitting the information of the wireless power receiver to the wireless power transmitter, wherein the information of the wireless power receiver includes at least one of information on the same wireless charging standard, a type of power transmission mode that is supported, a power device type of the wireless power receiver, a power value for battery charge and a battery charged state; and
receiving from the wireless power transmitter at least information on the power transmission mode; and
receiving from the wireless power transmitter a wireless power generated according to the same wireless charging standard, the power transmission mode and the power device type.
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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.
15 Citations
16 Claims
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1. A method of receiving wireless power by a wireless power receiver, the method comprising:
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receiving a scanning signal from a wireless power transmitter through any one of a magnetic field of a first frequency band which complies with a first wireless charging standard and a magnetic field of a second frequency band which complies with a second wireless charging standard; in response to the scanning signal, transmitting a first response signal if the wireless power receiver complies with the first wireless charging standard or transmitting a second response signal if the wireless power receiver complies with the second wireless charging standard; receiving from the wireless power transmitter a request signal to request for information of the wireless power receiver, wherein both the request signal and the information of the wireless power receiver are defined by the same wireless charging standard; transmitting the information of the wireless power receiver to the wireless power transmitter, wherein the information of the wireless power receiver includes at least one of information on the same wireless charging standard, a type of power transmission mode that is supported, a power device type of the wireless power receiver, a power value for battery charge and a battery charged state; and receiving from the wireless power transmitter at least information on the power transmission mode; and receiving from the wireless power transmitter a wireless power generated according to the same wireless charging standard, the power transmission mode and the power device type. - View Dependent Claims (2, 3, 4, 5)
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6. A wireless power receiver comprising:
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a communication module which supports at least in-band communication which transmits or receives information loaded into a magnetic field through a receive antenna, or out-band communication which uses a magnetic field with a particular frequency used as a center frequency; the receive antenna configured to; receives a scanning signal from a wireless power transmitter through any one of a magnetic field of a first frequency band which complies with a first wireless charging standard and a magnetic field of a second frequency band which complies with a second wireless charging standard transmits, in response to the scanning signal, a first response signal if the wireless power receiver complies with the first wireless charging standard or transmits a second response signal if the wireless power receiver complies with the second wireless charging standard;
receives from the wireless power transmitter a request signal to request for information of the wireless power receiver, wherein both the request signal and the information of the wireless power receiver are defined by the same wireless charging standard,transmits the information of the wireless power receiver to the wireless power transmitter, wherein the information of the wireless power receiver includes at least one of information on the same wireless charging standard, a type of power transmission mode that is supported, a power device type of the wireless power receiver, a power value for battery charge and a battery charged state, and receives from the wireless power transmitter at least information on the power transmission mode, wherein the receive antenna receives from the wireless power transmitter a wireless power generated according to the same wireless charging standard, the power transmission mode and the power device type, and a controller which controls overall operations of the wireless power receiver; a rectifier which rectifies the wireless power by converting AC into DC; and a DC-DC converter which converts a voltage of the rectified DC into a desired level. - View Dependent Claims (7, 8, 9, 10)
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11. A wireless power transmitter comprising:
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a power transmitting module configured to transmit wireless power using one of a magnetic field of a first frequency band which complies with a first wireless charging standard and a magnetic field of a second frequency band which complies with a second wireless charging standard that is different from the first wireless charging standard; a first communication module; a second communication module; and a controller configured to; transmit a first magnetic field signal of the first frequency band through the power transmitting module; detect a first response signal regarding the first magnetic field signal through the first communication module; in response to receipt of the first response signal, search for a first wireless power receiver that receives wireless power using the first frequency band; transmit the second magnetic field signal through the power transmitting module; detect a second response signal regarding the second magnetic field signal through the second communication module; and in response to receipt of the second response signal, search for a second wireless power receiver that receives wireless power using the second frequency band. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification