Wireless power transmission system, and method of controlling transmission and reception of resonance power

Abstract

A resonance power transmission system, and a method of controlling transmission and reception of a resonance power are provided. According to one embodiment, a method of controlling resonance power transmission in a resonance power transmitter may include: transmitting resonance power to a resonance power receiver, the resonance power having resonance frequencies which vary with respect to a plurality of time intervals; and receiving, from the resonance power receiver, information regarding the resonance frequency having the highest power transmission efficiency among the resonance frequencies used in the time intervals.

What is claimed is: 
     
         1 . A method of controlling wireless power reception performed at an electronic device, the method comprising:
 receiving a first plurality of wireless power signals from a power transmitting device, wherein each of the first plurality of wireless power signals is received in a respective time interval among a plurality of time intervals,   transmitting information about each of the first plurality of wireless power signals to the power transmitting device;   receiving a second wireless power signal from the power transmitting device, wherein the second wireless power signal is generated based on the information about each of the first plurality of wireless power signals; and   charging the electronic device with the received second wireless power signal.   
     
     
         2 . The method of  claim 1 , further comprising;
 transmitting, to the power transmitting device, a report message comprising a charging status of the electronic device and an identifier of the electronic device.   
     
     
         3 . The method of  claim 2 , further comprising:
 determining whether a charging of the electronic device is completed; and   based on the charging of the electronic device being completed, notifying the power transmitting device of the completion of the charging of the electronic device.   
     
     
         4 . A method of controlling wireless power transmission performed by a power transmitting device, the method comprising:
 transmitting a first plurality of wireless power signals to an electronic device, wherein each of the first plurality of wireless power signals is transmitted in a respective time interval among a plurality of time intervals,   receiving, from the electronic device, information about each of the first wireless power signals received by the electronic device; and   transmitting a second wireless power signal to the electronic device, wherein the second wireless power signal is generated based on the information about each of the first plurality of wireless power signals.   
     
     
         5 . The method of  claim 4 , further comprising:
 receiving, from the electronic device, a report message comprising a charging status of the electronic device and an identifier of the electronic device.   
     
     
         6 . The method of  claim 5 , further comprising:
 determining that the electronic device does not exist, based on the report message from the electronic device not being received within the predetermined period of time.   
     
     
         7 . The method of  claim 4 , further comprising:
 receiving, from the electronic device, a notification indicating the completion of the charging of the electronic device.   
     
     
         8 . An electronic device comprising:
 a receiver configured to receive a wireless power signal transmitted from a power transmitting device;   a communication unit configured to communicate with the power transmitting device; and   a controller configured to:   control to receive, through the receiver, a first plurality of wireless power signals transmitted from the power transmitting device, wherein each of the first plurality of wireless power signals is received in a respective time interval among a plurality of time intervals,   control to transmit, to the communication unit, and to the power transmitting device, information about each of the first plurality of wireless power signals,   control to receive, through the receiver, a second wireless power signal transmitted from the power transmitting device, wherein the second wireless power signal is generated based on the information about each of the first plurality of wireless power signals, and   control to charge the electronic device with the received second wireless power signal.   
     
     
         9 . The electronic device of  claim 8 , wherein the controller is further configured to control to transmit, to the communication unit, a report message comprising a charging status of the electronic device and an identifier of the electronic device. 
     
     
         10 . The electronic device of  claim 9 , wherein the controller is further configured to:
 control to determine whether a charging of the electronic device is completed, and   notify the power transmitting device of the completion of the charging of the electronic device, based on the charging of the electronic device being completed.   
     
     
         11 . A power transmitting device comprising:
 a transmitter configured to transmit a wireless power signal to an electronic device;   a communication unit configured to communicate with the electronic device; and   a controller configured to:   control to transmit, through the transmitter, a first plurality of wireless power signals to a power receiving device, wherein each of the first plurality of wireless power signals is transmitted in a respective time interval among a plurality of time intervals,   control to receive, from the communication unit, information about each of the first plurality of wireless power signals received by the communication unit from the electronic device,   control to generate a second wireless power signal, based on the received information about each of the first plurality of wireless power signals, and   control to transmit, through the transmitter, the second wireless power signal to the electronic device.   
     
     
         12 . The power transmitting device of  claim 11 , wherein the controller is further configured to control to receive a report message from the electronic device within a predetermined period of time, the report message comprising a charging status of the electronic device and an identifier of the electronic device. 
     
     
         13 . The power transmitting device of  claim 12 , wherein the controller is further configured to control to determine that the electronic device does not exist, based on the report message from the electronic device not being received within the predetermined period of time. 
     
     
         14 . The power transmitting device of  claim 11 , wherein the controller is further configured to control to receive, from the electronic device, a notification indicating a completion of the charging of the electronic device.