US 2026/0018933 A1 · IN SYSTEM MAGNETIC COUPLING MEASUREMENTS FOR WIRELESS POWER TRANSFER

Abstract

Determining an indication of coupling between a wireless power transmitting coil of a wireless power transmitter and a wireless power receiving coil of a wireless power receiver can include measuring one or more circuit parameters of the wireless power transmitter with the wireless power receiving coil effectively short circuited; measuring one or more circuit parameters of the wireless power transmitter with the wireless power receiver coil open circuited; and combining the one or more circuit parameters of the wireless power transmitter measured with the wireless power receiving coil effectively short circuited with the one or more circuit parameters of the wireless power transmitter measured with the wireless power receiver coil open circuited.

Claims20

Dependent claims

A wireless power transmitter comprising:

an inverter that generates an AC voltage when receiving an input voltage;
a wireless power transmitting coil that receives the AC voltage from the inverter, the wireless power transmitting coil being couplable to a wireless power receiving coil of a wireless power receiver;
and
controller circuitry that:
operates the inverter to deliver power wirelessly, using the wireless power transmitting coil, to the wireless power receiver;
and
determines an indication of coupling between the wireless power transmitting coil and the wireless power receiving coil by combining (i) one or more circuit parameters of the wireless power transmitter measured with the wireless power receiving coil effectively short circuited with (ii) one or more circuit parameters of the wireless power transmitter measured with the wireless power receiving coil open circuited.

4 more elements

A method of determining an indication of coupling between a wireless power transmitting coil of a wireless power transmitter and a wireless power receiving coil of a wireless power receiver, the method being performed by the wireless power transmitter and comprising:

measuring one or more circuit parameters of the wireless power transmitter with the wireless power receiving coil effectively short circuited;
measuring one or more circuit parameters of the wireless power transmitter with the wireless power receiver coil open circuited;
and
combining the one or more circuit parameters of the wireless power transmitter measured with the wireless power receiving coil effectively short circuited with the one or more circuit parameters of the wireless power transmitter measured with the wireless power receiver coil open circuited.

1 more element

Dependencies are inferred from the claim text.

In system magnetic coupling measurements for wireless power transfer

Life of this patent

In system magnetic coupling measurements for wireless power transfer

Life of this patent

Abstract

Claims20