US 11,881,723 B2
Wireless power transfer systems for kitchen appliances
Mark Melone, Frankfort, IL (US); Alberto Peralta, Chicago, IL (US); and Michael Katz, Glen Ellyn, IL (US)
Assigned to NuCurrent, Inc., Chicago, IL (US)
Filed by NuCurrent, Inc., Chicago, IL (US)
Filed on Sep. 12, 2022, as Appl. No. 17/942,669.
Application 17/942,669 is a continuation of application No. 17/172,909, filed on Feb. 10, 2021, granted, now 11,444,492.
Prior Publication US 2023/0071605 A1, Mar. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 50/40 (2016.01); H02J 50/20 (2016.01); A47J 47/01 (2006.01); A47J 27/00 (2006.01); H05B 6/12 (2006.01); H02J 50/60 (2016.01)
CPC H02J 50/40 (2016.02) [A47J 27/004 (2013.01); A47J 47/01 (2013.01); H02J 50/20 (2016.02); H05B 6/1236 (2013.01); H02J 50/60 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A near-field magnetic induction wireless power transfer system for providing wireless power to a kitchen appliance, the near-field magnetic induction wireless power transfer system comprising:
a wireless power transmission system comprising:
a first transmission antenna configured to transmit virtual AC power signals;
a second transmission antenna configured to transmit virtual direct current (DC) power signals;
at least one transmission controller configured to (i) provide a first driving signal for driving the first transmission antenna based on a first operating frequency and a virtual AC power frequency, and (ii) provide a second driving signal for the second transmission antenna based on a second operating frequency;
a first transmission power conditioning system configured to receive the first driving signal and a first input power signal to generate the virtual AC power signals at the first operating frequency and having peak voltages rising and falling based on the virtual AC power frequency; and
a second transmission power conditioning system configured to receive the second driving signal and to receive a second input power signal to generate the virtual DC power signals at the second operating frequency; and
a wireless power receiver system operatively associated with the kitchen appliance, the wireless power receiver system comprising:
a first receiver antenna configured to receive the virtual AC power signals from the first transmission antenna, the first receiver antenna operating based on the first operating frequency;
a second receiver antenna configured to receive the virtual DC power signals from the second transmission antenna, the second receiver antenna operating based on the second operating frequency;
a first receiver power conditioning system configured to (i) receive the virtual AC power signals, (ii) convert the virtual AC power signals to alternating current (AC) received power signals, and (iii) provide the AC received power signals to a first load of the kitchen appliance; and
a second receiver power conditioning system configured to (i) receive the virtual DC power signals, (ii) convert the virtual DC power signals to DC received power signals, and (iii) provide the DC received power signals to a second load of the kitchen appliance.