US 11,984,741 B2
Wireless charging system with multi-coil scanning and learning
Summer L. Schneider, Beaverton, OR (US)
Assigned to NIKE, Inc., Beaverton, OR (US)
Filed by NIKE, Inc., Beaverton, OR (US)
Filed on Apr. 20, 2023, as Appl. No. 18/137,117.
Application 18/137,117 is a continuation of application No. 17/237,771, filed on Apr. 22, 2021, granted, now 11,664,669.
Application 17/237,771 is a continuation of application No. 16/736,206, filed on Jan. 7, 2020, granted, now 10,992,179.
Application 16/736,206 is a continuation of application No. 15/878,032, filed on Jan. 23, 2018, granted, now 10,594,156.
Claims priority of provisional application 62/449,460, filed on Jan. 23, 2017.
Prior Publication US 2023/0344253 A1, Oct. 26, 2023
Int. Cl. H02J 7/00 (2006.01); H01F 27/28 (2006.01); H02J 50/10 (2016.01); H02J 50/40 (2016.01); A43B 3/00 (2022.01); A43B 3/34 (2022.01); A43B 3/35 (2022.01); A43C 11/16 (2006.01)
CPC H02J 7/0042 (2013.01) [H01F 27/28 (2013.01); H02J 50/10 (2016.02); H02J 50/402 (2020.01); A43B 3/0031 (2013.01); A43B 3/34 (2022.01); A43B 3/35 (2022.01); A43C 11/165 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A system, comprising:
a recharge apparatus, comprising a plurality of transmit coils positioned in a pattern to allow at least one of the plurality of transmit coils to establish a wireless link with a receive coil positioned in proximity of the recharge apparatus;
a power source coupled to the plurality of transmit coils and configured to selectively energize ones of the plurality of transmit coils to transfer power to the receive coil;
an energy efficiency detection circuit coupled to the plurality of transmit coils and configured to detect an electrical response of each one of the plurality of transmit coils when energized by the power source, the electrical response indicative of an energy efficiency between the one of the plurality of transmit coils and the receive coil, the energy efficiency based on a difference between the electrical response induced in a respective one of the plurality of transmit coils in relation to a related electrical property in the power source;
an electronic data storage, coupled to the energy detection circuit, configured to store data indicative of the energy efficiency to generate a historical record of energizing the plurality of transmit coils; and
a controller, coupled to the electronic data storage and the power source, configured to iteratively update the historical record based on the electrical response and to cause the power source to selectively energize ones of the plurality of transmit coils, wherein the at least one transmit coil is selected according to a statistical analysis of the historical record.