US 12,463,471 B2
Wireless power transmission device and operating method therefor
Beomwoo Gu, Suwon-si (KR); Daehyun Kim, Suwon-si (KR); Jaehyun Park, Suwon-si (KR); Kangho Byun, Suwon-si (KR); Sungku Yeo, Suwon-si (KR); and Youngho Ryu, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jul. 5, 2024, as Appl. No. 18/765,065.
Application 18/765,065 is a continuation of application No. PCT/KR2022/018407, filed on Nov. 21, 2022.
Claims priority of application No. 10-2022-0005622 (KR), filed on Jan. 14, 2022; and application No. 10-2022-0023784 (KR), filed on Feb. 23, 2022.
Prior Publication US 2024/0364147 A1, Oct. 31, 2024
Int. Cl. H02J 50/90 (2016.01); H02J 50/12 (2016.01); H02J 50/80 (2016.01)
CPC H02J 50/90 (2016.02) [H02J 50/12 (2016.02); H02J 50/80 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A wireless power transmission device comprising:
a transmission coil comprising a first member forming a first angle with a plane and a second member disposed on the plane and connected to each of one end and another end of the first member;
a resonance circuit comprising the transmission coil and a capacitor connected to the transmission coil in series or parallel;
an impedance sensor configured to detect impedance based on a voltage and a current measured at a first point of the wireless power transmission device;
a magnetic body having a dented side surface facing a portion of the transmission coil;
a motor configured to move the magnetic body;
memory storing one or more computer programs; and
one or more processors communicatively coupled to the memory,
wherein the one or more computer programs include computer-executable instructions that, when executed by the one or more processors individually or collectively, cause the wireless power transmission device to:
receive, from the impedance sensor, the detected impedance as a voltage value,
calculate a difference value between a reference voltage value and the received voltage value,
determine control information of the motor based on the calculated difference value, and
control a distance between the magnetic body and the portion of the transmission coil by driving the motor through the determined control information.