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公开(公告)号：US12088110B2
公开(公告)日：2024-09-10
申请号：US17987590
申请日：2022-11-15
发明人： Jaehyun Park , Beomwoo Gu , Jaeseok Park , Kangho Byun , Jaesun Shin , Sungku Yeo , Youngho Ryu
CPC分类号： H02J50/005 , H02J50/12 , H02J50/402 , H03H7/38
摘要： 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.
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公开(公告)号：US11469625B2
公开(公告)日：2022-10-11
申请号：US16951581
申请日：2020-11-18
发明人： Kangho Byun , Seogyong Jeong , Jaehyun Park , Jihyun Yang
摘要： 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.
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公开(公告)号：US12040629B2
公开(公告)日：2024-07-16
申请号：US17683614
申请日：2022-03-01
发明人： Beomwoo Gu , Kangho Byun , Sungku Yeo , Chongmin Lee , Bohwan Choi , Hyoseok Han
CPC分类号： H02J50/12 , H02J7/00308 , H02J7/007182 , H02J7/345
摘要： According to various embodiments, a wireless power reception device for receiving wireless power from a wireless power transmission device may include a first circuit, a first rectifier circuit, a detuning circuit, and a control circuit. The first circuit may include a first coil. The first rectifier circuit may include a first switch and a second switch among a plurality of switches. The detuning circuit may include at least one detuning capacitor and at least one detuning switch. In response to a voltage at an output terminal of the first rectifier circuit exceeding a first voltage, the control circuit may be configured to form a closed loop including the first coil, the first switch, and the second switch by controlling the at least one detuning switch to an on state and controlling the first switch and the second switch to the on state.
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公开(公告)号：US11962175B2
公开(公告)日：2024-04-16
申请号：US17085117
申请日：2020-10-30
发明人： Beomwoo Gu , Kangho Byun , Hyunseok Shin , Sungku Yeo , Youngho Ryu , Chongmin Lee
CPC分类号： H02J7/00308 , H02J7/0047 , H02J7/02 , H02J50/12 , H02J50/80
摘要： 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.
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公开(公告)号：US11962169B2
公开(公告)日：2024-04-16
申请号：US17580186
申请日：2022-01-20
发明人： Chongmin Lee , Sungku Yeo , Kangho Byun , Jaesun Shin , Jeongman Lee , Hyoseok Han
CPC分类号： H02J50/90 , H02J50/12 , H04B5/0037 , H04W4/80
摘要： An electronic device includes a power transmitter; a first communication interface configured to support an Ultra-Wideband (UWB) communication scheme; a second communication interface configured to support a Bluetooth communication scheme; and a processor configured to: control the first communication interface to transmit a first signal and receive a second signal corresponding to the first signal via the first communication interface, identify, based on a difference between a transmission time of the first signal and a reception time of the second signal, first location information of a first external device, control the power transmitter to transmit a first driving power having a first magnitude, based on a first distance between the first external device and the electronic device being within a first range, the first distance being identified based on the first location information, establish a Bluetooth communication connection with the first external device, based on receiving, via the second communication interface, a first packet transmitted from the first external device using the first driving power, after transmitting the first driving power, and control the power transmitter to transmit a first charging power having a second magnitude, after establishing the Bluetooth communication connection.
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公开(公告)号：US12081034B2
公开(公告)日：2024-09-03
申请号：US17276743
申请日：2019-09-17
发明人： Beomwoo Gu , Sungbum Park , Jaehyun Park , Kangho Byun , Sungku Yeo
CPC分类号： H02J50/005 , H01F38/14 , H02J7/0044 , H02J50/10 , H02J50/402 , H04B5/26 , H04B5/79 , H02J50/80 , H02J2310/22
摘要： An example wireless charging device includes a wireless charging device body and a wireless power transmitting device disposed on the wireless charging device body. The wireless power transmitting device includes at least one transmitting coil and a transmitting magnetic body configured to surround the at least one transmitting coil and to face a receiving magnetic body provided on a wireless power receiving device of an external electronic device. The inner peripheral surface of the wireless power transmitting device faces the inner surface of the wireless charging device body. The transmitting magnetic body is formed in a ring structure, at least a part of which is open. One surface of the open ring structure is disposed on at least a part of the inner surface of the wireless charging device body. One surface of the ring structure of the transmitting magnetic body faces the receiving magnetic body.
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公开(公告)号：US12074638B2
公开(公告)日：2024-08-27
申请号：US17285297
申请日：2019-12-11
发明人： Kangho Byun
IPC分类号： H04B10/079 , G01J9/02 , H04B10/077
CPC分类号： H04B10/07955 , G01J9/0246 , H04B10/0775
摘要： 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.
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公开(公告)号：US10862340B2
公开(公告)日：2020-12-08
申请号：US16266619
申请日：2019-02-04
发明人： Jihoon Jung , Kangho Byun , Paul Jang , Kiyoung Kim , Jaehyun Park
IPC分类号： H02J50/12 , G01R19/00 , H02J50/90 , H02M7/5387
摘要： A wireless power transmission apparatus for wirelessly transmitting power to a wireless power reception apparatus is provided. The wireless power transmission apparatus includes a power transmitting circuit including a coil and at least one processor to control to transmit, via the power transmitting circuit, a pilot power with changing a frequency of the pilot power within a predetermined frequency range, obtain a magnitude of power wirelessly transmitted to a wireless power reception apparatus based on the transmitted pilot power, determine an operating frequency based on the obtained magnitude, and control to transmit, via the power transmitting circuit, a driving power having the operating frequency to drive the wireless power reception apparatus.
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