US 12,015,282 B2
Wireless power transmitting device for wirelessly transmitting power, wireless power receiving device for wirelessly receiving power, and operation method thereof
Mingi Song, Gyeonggi-do (KR); Kyungmin Park, Gyeonggi-do (KR); and Changhak O, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Jun. 22, 2022, as Appl. No. 17/846,380.
Application 17/846,380 is a continuation of application No. PCT/KR2022/007740, filed on May 31, 2022.
Claims priority of application No. 10-2021-0115070 (KR), filed on Aug. 30, 2021.
Prior Publication US 2023/0063671 A1, Mar. 2, 2023
Int. Cl. H02J 50/80 (2016.01); H02J 50/10 (2016.01)
CPC H02J 50/80 (2016.02) [H02J 50/10 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A wireless power transmitting device comprising:
a transmission coil;
a DC/DC converter configured to output a driving voltage;
an inverter configured to output AC power to the transmission coil, using the driving voltage;
at least one controller; and
memory storing instructions that, when executed by the at least one controller, cause the wireless power transmitting device to:
output a first control signal for generating the AC power having a first frequency to the inverter, so that the inverter outputs, to the transmission coil, the AC power having the first frequency based on the first control signal,
identify voltage information of a demodulated signal generated by demodulating a signal applied to the transmission coil while the AC power having the first frequency is applied to the transmission coil, and
output, to the inverter, a second control signal for generating the AC power having a second frequency different from the first frequency, instead of the first control signal, based on a first peak-to-peak value identified in the voltage information being a preset first value or more, and
wherein the inverter outputs the AC power having the second frequency to the transmission coil based on the second control signal.