Power supply apparatus for wirelessly supplying power to external apparatus, control method for power supply apparatus, and recording medium

Abstract

In various embodiments, a power supply apparatus for wirelessly transmitting electric power includes a power supply unit configured to output a wireless signal of a predetermined frequency to supply power to a power receiving apparatus, a communication unit, and a control unit, wherein the control unit receives data from the power receiving apparatus via the communication unit, and controls an output of the power supply unit based on the data, and wherein the control unit detects intensity of a harmonic component of the wireless signal output from the power supply apparatus, and controls the output of the power supply unit such that the detected intensity of the harmonic component becomes equal to or less than a predetermined value.

What is claimed is: 
     
         1 . A power supply apparatus for wirelessly transmitting electric power, the power supply apparatus comprising:
 a power supply unit configured to output a wireless signal of a predetermined frequency to supply power to a power receiving apparatus;   a communication unit configured to communicate with the power receiving apparatus via an antenna having a frequency of a second-order harmonic of the predetermined frequency being a resonance frequency; and   a control unit,   wherein the control unit receives data from the power receiving apparatus via the communication unit, and controls an output of the power supply unit based on the data, and   wherein the control unit detects intensity of a second-order harmonic component of the wireless signal output from the power supply apparatus, and controls the output of the power supply unit such that the intensity of the second-order harmonic component becomes equal to or less than a predetermined value.   
     
     
         2 . The power supply apparatus according to  claim 1 , wherein the data includes one or more of remaining battery capacity, maximum power reception, or reception electric power. 
     
     
         3 . The power supply apparatus according to  claim 1 , wherein a communication range of the communication unit is wider than a power supply range of the power supply unit. 
     
     
         4 . The power supply apparatus according to  claim 1 , further comprising a first antenna and a second antenna,
 wherein the power supply unit outputs the wireless signal of the predetermined frequency via the first antenna, and   wherein the communication unit connects with an external apparatus via the second antenna.   
     
     
         5 . The power supply apparatus according to  claim 1 , wherein the power supply unit outputs the wireless signal of the predetermined frequency in compliance with near field communication (NFC) standard. 
     
     
         6 . The power supply apparatus according to  claim 1 , wherein the communication unit connects with an external apparatus in compliance with Bluetooth® low energy (BLE) standard. 
     
     
         7 . A control method for a power supply apparatus including a communication unit for communicating with a power receiving apparatus, a power supply unit for outputting a wireless signal of a predetermined frequency to supply power to the power receiving apparatus, and a communication unit configured to communicate with the power receiving apparatus via an antenna having a frequency of a second-order harmonic of the predetermined frequency being a resonance frequency, the control method comprising:
 receiving data from the power receiving apparatus via the communication unit, and controlling an output of the power supply unit based on the data;   detecting intensity of a second-order harmonic component of the wireless signal output from the power supply apparatus; and   controlling the output of the power supply unit such that the intensity of the second-order harmonic component becomes equal to or less than a predetermined value.   
     
     
         8 . The control method according to  claim 8 , wherein the data includes one or more of remaining battery capacity, maximum power reception, or reception electric power. 
     
     
         9 . The control method according to  claim 8 , wherein a communication range of the communication unit is wider than a power supply range of the power supply unit. 
     
     
         10 . The control method according to  claim 8 , wherein the power supply apparatus further includes a first antenna and a second antenna,
 wherein the power supply unit outputs the wireless signal of the predetermined frequency via the first antenna, and   wherein the communication unit connects with an external apparatus via the second antenna.   
     
     
         11 . The control method according to  claim 8 , wherein the power supply unit outputs the wireless signal of the predetermined frequency in compliance with near field communication (NFC) standard. 
     
     
         12 . The control method according to  claim 8 , wherein the communication unit connects with an external apparatus in compliance with Bluetooth® low energy (BLE) standard. 
     
     
         13 . A non-transitory recording medium storing a program for causing a power supply apparatus to perform a control method, the power supply apparatus including a communication unit for communicating with a power receiving apparatus, a power supply unit for outputting a wireless signal of a predetermined frequency to supply power to the power receiving apparatus, and a communication unit configured to communicate with the power receiving apparatus via an antenna having a frequency of a second-order harmonic of the predetermined frequency being a resonance frequency, the control method comprising:
 receiving data from the power receiving apparatus via the communication unit, and controlling an output of the power supply unit based on the data;   detecting intensity of a second-order harmonic component of the wireless signal output from the power supply apparatus; and   controlling the output of the power supply unit such that the intensity of the second-order harmonic component becomes equal to or less than a predetermined value.