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公开(公告)号：US11190053B2
公开(公告)日：2021-11-30
申请号：US16889214
申请日：2020-06-01
发明人： Jinbong Lee , Beomwoo Gu , Jaehyun Park , Sanghyuk Wi
摘要： A wireless power transmitter may include: a power factor correction (PFC) circuit configured to convert first alternating current (AC) power input from a power source into direct current (DC) power; an inverter configured to convert the DC power output from the PFC circuit into second AC power; a power transmission circuit configured to transmit wireless power, based on the second AC power output from the inverter; and at least one processor configured to identify at least one of a voltage or a current of the DC power output from the PFC circuit, and control an operation of the inverter based on the identified at least one of the voltage or the current.
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公开(公告)号：US12074449B2
公开(公告)日：2024-08-27
申请号：US17956443
申请日：2022-09-29
发明人： Beomwoo Gu , Jaeseok Park , Jaehyun Park , Youngho Ryu , Jungkyu Han
CPC分类号： H02J50/12 , H03H1/00 , H03H2001/0035
摘要： An example wireless power transmitter may include a transistor configured to output an amplified signal, a first capacitor coupled to the transistor in parallel, a first LC resonant circuit coupled to the transistor in parallel, a third capacitor having a first end coupled to an output terminal of the transistor and the first LC resonant circuit, a feeding coil coupled to a second end of the third capacitor in series, and having at least a part configured to form a second LC resonant circuit with the third capacitor, and a transmission resonator including a transmission coil and a fourth capacitor coupled to the transmission coil in series. At least a part of the transmission coil may be magnetically coupled with the feeding coil, and at least a part of power received from the feeding coil may be output to an outside through the transmission resonator.
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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：US11990768B2
公开(公告)日：2024-05-21
申请号：US17583803
申请日：2022-01-25
发明人： Jaehyun Park , Beomwoo Gu , Jaeseok Park , Hyunseok Shin , Sungku Yeo , Youngho Ryu , Chongmin Lee
CPC分类号： H02J50/12 , H02J50/005
摘要： 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.
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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：US11996704B2
公开(公告)日：2024-05-28
申请号：US17523476
申请日：2021-11-10
发明人： Beomwoo Gu , Jaehyun Park , Chongmin Lee , Bohwan Choi
CPC分类号： H02J50/12 , H01F27/42 , H02J2310/22
摘要： A wireless power receiver receiving power from a wireless power transmitter is provided. The receiver includes a resonance circuit, a rectifier circuit, and a driver circuit. The resonance circuit includes first and second coils and a first capacitor. The rectifier circuit includes first and second rectifier circuits. The first rectifier circuit includes first through fourth MOSFETs. Sources of the first and second MOSFETs are connected to ends of a resonator including the first coil and the first capacitor. Sources of the third and fourth MOSFETs are connected to ground. The driver circuit is connected to gates of the first through fourth MOSFETs, When the driver circuit switches off the first and second MOSFETs and switches on the third and fourth MOSFETs, as currents are induced in the resonator and the second coil, the resonance circuit receives the wireless power, and the current induced in the second coil is rectified by the second rectifier circuit.
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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：US20220255366A1
公开(公告)日：2022-08-11
申请号：US17667964
申请日：2022-02-09
发明人： Jaehyun PARK , Beomwoo Gu , Jaeseok Park , Sungku Yeo , Youngho Ryu , Bohwan Chol
摘要： Disclosed is a coil including a first conductor disposed on a first plane, a second conductor disposed on a second plane different from the first plane, and including a first end electrically connected to a first end of the first conductor, and a second end positioned near a second end of the first conductor, and a third conductor disposed on the first plane, and including a first end electrically connected to the second end of the second conductor, and a second end positioned near the first end of the second conductor, wherein a pattern of the first conductor connecting the first end of the first conductor from the second end of the first conductor is in a clockwise or counterclockwise direction when the first plane is viewed from a first side, and wherein a pattern of the third conductor connecting the second end of the third conductor from the first end of the third conductor is in a direction opposite to the direction of the pattern of the first conductor when the first plane is viewed from the first side.
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公开(公告)号：US12107442B2
公开(公告)日：2024-10-01
申请号：US17667964
申请日：2022-02-09
发明人： Jaehyun Park , Beomwoo Gu , Jaeseok Park , Sungku Yeo , Youngho Ryu , Bohwan Choi
CPC分类号： H02J50/70 , H01F27/263 , H02J7/02 , H02J50/12
摘要： Disclosed is a coil including a first conductor disposed on a first plane, a second conductor disposed on a second plane different from the first plane, and including a first end electrically connected to a first end of the first conductor, and a second end positioned near a second end of the first conductor, and a third conductor disposed on the first plane, and including a first end electrically connected to the second end of the second conductor, and a second end positioned near the first end of the second conductor, wherein a pattern of the first conductor connecting the first end of the first conductor from the second end of the first conductor is in a clockwise or counterclockwise direction when the first plane is viewed from a first side, and wherein a pattern of the third conductor connecting the second end of the third conductor from the first end of the third conductor is in a direction opposite to the direction of the pattern of the first conductor when the first plane is viewed from the first side.
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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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