公开(公告)号：US20230155416A1

公开(公告)日：2023-05-18

申请号：US17987590

申请日：2022-11-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jaehyun PARK ,  Beomwoo GU ,  Jaeseok PARK ,  Kangho BYUN ,  Jaesun SHIN ,  Sungku YEO ,  Youngho RYU

IPC: H02J50/00 ,  H02J50/12 ,  H02J50/40 ,  H03H7/38

CPC classification number: H02J50/005 ,  H02J50/12 ,  H02J50/402 ,  H03H7/38

Abstract: The disclosure provides a variable wireless power transmitter including a plurality of resonators and a method of controlling the variable wireless power transmitter. A wireless power transmitter of the disclosure may include: a housing; a power amplifier disposed inside the housing; a first resonator including at least one coil and fixed to a first portion of the housing; a second resonator including at least one coil, rotatably disposed at a second portion of the housing, and configured to form a variable angle with the first resonator; a sensor configured to sense a shape change based on rotation of the second resonator; a controller configured to: identify a shape change of the first resonator and the second resonator based on a signal sensed by the sensor, identify whether impedance is matched for the first resonator or the second resonator based on the identification of the shape change, and generate a control signal for impedance matching for the first resonator or the second resonator based on identifying that the impedance is not matched; and a matching circuit including at least one coil and at least one capacitor, electrically coupled between the power amplifier and the first resonator, and configured to perform impedance matching based on the control signal received from the controller.

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.

公开(公告)号：US20210367667A1

公开(公告)日：2021-11-25

申请号：US17285297

申请日：2019-12-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kangho BYUN

IPC: H04B10/079 ,  H04B10/077 ,  G01J9/02

Abstract: Provided are various embodiments related to an electronic device. According to an embodiment, an electronic device may comprise: an IR (infrared light) transmission unit for outputting IR light; an IR reception unit for receiving IR light; and processor. The processor is configured to: identify a first IR transmission signal to be transmitted to an external device; identify a first time interval and a second time interval, which correspond to the first IR transmission signal; output first IR light corresponding to at least a part of the first IR transmission signal through the IR transmission unit in the first time interval; identify whether second IR light having the intensity larger than or equal to a threshold is received by the IR reception unit in the second time interval; and when the second IR light having the intensity larger than or equal to the threshold is received by the IR reception unit in the second time interval, interrupt transmission of the IR transmission signal. In addition, other embodiments may be possible.

公开(公告)号：US20210152030A1

公开(公告)日：2021-05-20

申请号：US16951581

申请日：2020-11-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kangho BYUN ,  Seogyong Jeong ,  Jaehyun Park ,  Jihyun Yang

IPC: H02J50/60 ,  H02J50/12 ,  H01F38/14

Abstract: An electronic device for wirelessly transmitting power includes a first coil assembly; a second coil assembly; and a processor configured to control to generate a first magnetic field by applying first current to the first coil assembly; obtain a plurality of first sensing values of the first magnetic field sensed by a plurality of coils included in the second coil assembly; and identify whether a foreign material exists in a power transmission area of the electronic device based on the plurality of first sensing values.