US 11,837,883 B2
Multi-coil wireless charger validation
Eric Heindel Goodchild, Phoenix, AZ (US); and Camron Vossberg, Tempe, AZ (US)
Assigned to Aira, Inc., Phoenix, AZ (US)
Filed by AIRA, INC., Chandler, AZ (US)
Filed on Jan. 21, 2021, as Appl. No. 17/153,880.
Claims priority of provisional application 62/964,103, filed on Jan. 21, 2020.
Prior Publication US 2021/0226480 A1, Jul. 22, 2021
Int. Cl. H02J 7/00 (2006.01); H02J 50/40 (2016.01); H02J 50/12 (2016.01); H02J 7/02 (2016.01); G01R 31/72 (2020.01); H02J 50/90 (2016.01); G01R 31/40 (2020.01); H01F 38/14 (2006.01)
CPC H02J 50/402 (2020.01) [G01R 31/40 (2013.01); G01R 31/72 (2020.01); H01F 38/14 (2013.01); H02J 7/02 (2013.01); H02J 50/12 (2016.02); H02J 50/90 (2016.02)] 17 Claims
OG exemplary drawing
 
1. A test apparatus, comprising:
a receiving head configured to provide a measurement signal representative of electromagnetic flux received from one or more transmitting coils in a wireless charging surface of a charging device, wherein the receiving head includes an array of receiving coils, and wherein each receiving coil provides a local signal representative of electromagnetic flux detected by the each receiving coil;
a numerically-controlled stage configured to position the receiving head at a selected point in three-dimensional space above the wireless charging surface; and
a processor configured to:
cause the numerically-controlled stage to position the receiving head at the selected point in three-dimensional space;
use a plurality of local signals generated by the array of receiving coils to determine magnitude of electromagnetic flux or power received from the wireless charging surface proximate to the array of receiving coils; and
use the measurement signal to determine magnitude of the electromagnetic flux or power received from the wireless charging surface proximate to the selected point in three-dimensional space.