×

Power receiver, wireless power transfer system, and kQ-value calculation method

  • US 10,305,333 B2
  • Filed: 11/14/2016
  • Issued: 05/28/2019
  • Est. Priority Date: 05/22/2014
  • Status: Active Grant
First Claim
Patent Images

1. A power receiver configured to wirelessly receive power from at least one power source using one of magnetic field resonance and electric field resonance, the power receiver comprising:

  • a power receiver coil configured to wirelessly receive the power from the power source;

    an internal circuit configured to use the power obtained by the power receiver coil;

    a power detection resistor configured to detect the power obtained by the power receiver coil;

    a switch configured to apply a received power voltage obtained by the power receiver coil by switching to the power detection resistor;

    a power reception control unit configured to control the power detection resistor and the switch; and

    a communication circuit unit configured to perform communication with the power source, and the communication circuit unit comprising detection information of a received power and power supply timing information, whereinthe power reception control unit is configured tocontrol a resistance value of the power detection resistor to calculate the received power from a resistance ratio between a resistance value of the power receiver coil and a resistance value of the power detection resistor, and the received power voltage obtained by the power receiver coil, andtransfer the detection information of the calculated received power to the transmission circuit via the communication circuit unit.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×