US 12,328,015 B2
Power capability detection with verification load in power level control systems for wireless power transmission
Andrew Kovacs, Lafayette, IN (US); and Jason Green, Evanston, IL (US)
Assigned to NuCurrent, Inc., Chicago, IL (US)
Filed by NuCurrent, Inc., Chicago, IL (US)
Filed on Mar. 18, 2024, as Appl. No. 18/607,835.
Application 18/607,835 is a continuation of application No. 18/084,321, filed on Dec. 19, 2022, granted, now 11,936,213.
Application 18/084,321 is a continuation of application No. 17/245,953, filed on Apr. 30, 2021, granted, now 11,532,956, issued on Dec. 20, 2022.
Prior Publication US 2024/0413668 A1, Dec. 12, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 50/80 (2016.01); H02J 50/12 (2016.01); H02J 50/70 (2016.01)
CPC H02J 50/80 (2016.02) [H02J 50/12 (2016.02); H02J 50/70 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A power transmitter for wireless power transfer, the power transmitter comprising:
a verification load;
a controller comprising:
at least one processor;
at least one machine-readable medium; and
program instructions stored on the at least one machine-readable medium which, when executed by the at least one processor, cause the controller to:
provide a power request to an external power supply for direct current (DC) input power at or above a power level for the power transmitter to provide an alternating current (AC) wireless power signal to a power receiver;
provide a driving signal to an inverter circuit for generating the AC wireless power signal;
monitor the AC wireless power signal at the verification load, the AC wireless power signal based on the driving signal;
determine that the monitored AC wireless power signal at the verification load is compliant with the power request; and
based on determining that the AC wireless power signal at the verification load is compliant with the power request, verify power compliance for the external power supply and continue to operate for wireless power transmission;
the inverter circuit configured to receive the DC input power from the external power supply and convert the DC input power to the AC wireless power signal; and
a coil configured to transmit the AC wireless power signal to the power receiver.