US 12,249,844 B2
Wireless power transmitting apparatus and method for wirelessly transmitting power by wireless power transmitting apparatus
Jaeseok Park, Suwon-si (KR); Jaehyun Park, Suwon-si (KR); Beomwoo Gu, Suwon-si (KR); Kangho Byun, Suwon-si (KR); Sungku Yeo, Suwon-si (KR); Youngho Ryu, Suwon-si (KR); Chongmin Lee, Suwon-si (KR); and Hyoseok Han, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Aug. 25, 2023, as Appl. No. 18/456,176.
Application 18/456,176 is a continuation of application No. PCT/KR2022/003119, filed on Mar. 4, 2022.
Claims priority of application No. 10-2021-0036795 (KR), filed on Mar. 22, 2021.
Prior Publication US 2023/0402879 A1, Dec. 14, 2023
Int. Cl. H02J 50/12 (2016.01); G01R 25/00 (2006.01); G01R 27/02 (2006.01); H02J 50/60 (2016.01)
CPC H02J 50/12 (2016.02) [G01R 25/00 (2013.01); G01R 27/02 (2013.01); H02J 50/60 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A wireless power transmitting apparatus comprising:
a power amplifier;
a coil connected to the power amplifier and configured to generate an electromagnetic field based on power received from the power amplifier;
an impedance sensing circuit connected between the power amplifier and the coil;
at least one auxiliary coil electromagnetically coupled to the coil; and
a controller,
wherein the controller is configured to:
identify an impedance change from a signal sensed through the impedance sensing circuit; and
adjust an operation configuration of the at least one auxiliary coil based on the identified impedance change.