US 12,003,115 B2
Dual receiver detection apparatus and method for wireless power transfer system
Lei Huang, Shenzhen (CN); Chaoxi Wang, Shanghai (CN); Zeng Li, Shanghai (CN); Jun Liu, Shenzhen (CN); and Shi Song, Shanghai (CN)
Assigned to NuVolta Technologies (Hefei) Co., Ltd., Hefei (CN)
Filed by Nuvolta Technologies (Hefei) Co., Ltd., Hefei (CN)
Filed on May 24, 2021, as Appl. No. 17/328,070.
Claims priority of application No. 202110538990.4 (CN), filed on May 17, 2021.
Prior Publication US 2022/0368167 A1, Nov. 17, 2022
Int. Cl. H02J 50/90 (2016.01); H02J 50/10 (2016.01); H02J 50/40 (2016.01)
CPC H02J 50/40 (2016.02) [H02J 50/10 (2016.02); H02J 50/90 (2016.02); H02J 2310/22 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
applying a plurality of detection signals to a plurality of receivers;
receiving a plurality of echo signals resulted from the plurality of receivers;
comparing the plurality of echo signals with a predetermined echo signal distribution pattern;
determining the number of the plurality of receivers through comparing a distance between a first group of echo signals and a second group of echo signals with a predetermined threshold value if the plurality of echo signals comprises two groups of echo signals, and comparing the number of echo signals with a threshold number of echo signals in one group if the plurality of echo signals comprises one group of echo signals; and
charging the plurality of receivers sequentially using a movable transmitter.