公开(公告)号：US20230146055A1

公开(公告)日：2023-05-11

申请号：US18093088

申请日：2023-01-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jaeseok PARK ,  Beomwoo GU ,  Jaehyun PARK ,  Sungku YEO ,  Youngho RYU ,  Jeongman LEE ,  Chongmin LEE ,  Hyoseok HAN

IPC: H02J50/12 ,  H02J7/00 ,  H02J50/90 ,  H02J50/80 ,  G01R19/165

CPC classification number: H02J50/12 ,  H02J7/00712 ,  H02J50/90 ,  H02J7/00308 ,  H02J50/80 ,  G01R19/16576 ,  H02J2207/20

Abstract: An electronic device may include: a battery, a resonant circuit including a receiving coil, at least one capacitor and at least one switch, a rectifier circuit; a DC/DC converter, a charge control circuit; and a controller, wherein the controller may be configured to check the voltage outputted from the rectifier circuit, control the at least one switch so that the receiving coil and the at least one capacitor form a serial resonant circuit, if the voltage output from the rectifier circuit is greater than or equal to a threshold voltage, and control the at least one switch so that the receiving coil and the at least one capacitor form a parallel resonant circuit, if the voltage output from the rectifier circuit is less than the threshold voltage.

公开(公告)号：US20230077067A1

公开(公告)日：2023-03-09

申请号：US17903472

申请日：2022-09-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Joonhong KIM ,  Beomwoo GU ,  Jaeseok PARK ,  Jaehyun PARK ,  Sungku YEO ,  Youngho RYU

IPC: H02J50/90 ,  H02J50/12

Abstract: The disclosure provides a wireless power transmitting device and a method for detecting an approaching object by the wireless power transmitting device. According to the disclosure, a wireless power transmitting device may comprise: a power amplifier, a transmission resonator including a coil, and configured to receive an electrical signal corresponding to a first frequency, which is output through the power amplifier, and to form a magnetic field by the received electrical signal corresponding to the first frequency to transmit power, an antenna configured in a shape corresponding to any one side of a symmetrical axis of a split ring resonator (SRR) antenna, disposed adjacent to the transmission resonator, and configured to receive a signal corresponding to a second frequency, a sensing circuit configured to sense at least part of the signal corresponding to the second frequency transmitted to the antenna, and a controller configured to identify whether a human body approaches, based on a signal sensed through the sensing circuit. A first terminal of the sensing circuit may be connected to a first portion of the antenna, and a second terminal of the sensing circuit may be connected to the coil of the transmission resonator.

公开(公告)号：US20220239154A1

公开(公告)日：2022-07-28

申请号：US17583803

申请日：2022-01-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jaehyun PARK ,  Beomwoo GU ,  Jaeseok PARK ,  Hyunseok SHIN ,  Sungku YEO ,  Youngho RYU ,  Chongmin LEE

IPC: H02J50/12 ,  H02J50/00

Abstract: Disclosed is an annular resonator including a conductor formed on a surface of an annular shaped structure and having a first end and a second end opposite to the first end, and a capacitor having a first end and a second end opposite to the first end, wherein a radius of curvature of a first side facing a center portion of the annular shaped structure is smaller than a radius of curvature of a second side facing an outer periphery of the annular shaped structure, and wherein the first end and the second end of the conductor are electrically connected to the first end and the second end of the capacitor, respectively.

公开(公告)号：US20210376642A1

公开(公告)日：2021-12-02

申请号：US17085117

申请日：2020-10-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Beomwoo GU ,  Kangho BYUN ,  Hyunseok SHIN ,  Sungku YEO ,  Youngho RYU ,  Chongmin LEE

IPC: H02J7/00 ,  H02J50/12 ,  H02J50/80 ,  H02J7/02

Abstract: According to an embodiment, an electronic device may include a battery, a resonance circuit, a rectifier, a DC/DC converter, a charger, a switch, an overvoltage protection circuit configured to perform an overvoltage protection operation or to stop the overvoltage protection operation based on the voltage at the output terminal of the rectifier, a control circuit, and a communication circuit, and the control circuit may be configured to: based on a periodic repetition of a performance of the overvoltage protection operation and a stop of the overvoltage protection while the switch is in an off state, identify a first period during which the overvoltage protection operation is stopped, based on the first period, identify an expected voltage at an output terminal of the rectifier, to be expected, wherein the expected voltage is a voltage if the switch is in an on state, based on the expected voltage, identify whether an occurrence of an overvoltage is expected if the switch is in the on state, and control the communication circuit to transmit a communication signal including information about whether the occurrence of the overvoltage is expected.