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公开(公告)号：US20240364147A1
公开(公告)日：2024-10-31
申请号：US18765065
申请日：2024-07-05
Applicant: Samsung Electronics Co., Ltd.
Inventor： Beomwoo GU , Daehyun KIM , Jaehyun PARK , Kangho BYUN , Sungku YEO , Youngho RYU
Abstract: A wireless power transmission device is provided. The wireless power transmission device includes a transmission coil including a first member, which has one end and the other end forming a first angle with a plane, and a second member, which is arranged on the plane and is connected to each of the one end and the other end of the first member, an impedance sensor for outputting a voltage value corresponding to an impedance change amount of a resonance circuit, which includes the transmission coil, a magnetic body having a side surface that is dented, the dented side surface facing a portion of the transmission coil, a motor for moving 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 the output voltage value from the impedance sensor, calculate the difference value between a reference voltage value and the received voltage value, determine control information about the motor on the basis of the calculated difference value, and drive the motor through the determined control information so as to control the distance between the magnetic body and the portion of the transmission coil.
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公开(公告)号：US20240322602A1
公开(公告)日：2024-09-26
申请号：US18680176
申请日：2024-05-31
Applicant: Samsung Electronics Co., Ltd.
Inventor： Beomwoo GU , Jaeseok PARK , Jaehyun PARK , Jaesun SHIN , Sungku YEO
IPC: H02J50/12
CPC classification number: H02J50/12
Abstract: An electronic device is provided. The electronic device includes a processor, a battery, and a wireless power transmission device, wherein the wireless power transmission device includes a power amplifier circuit including a switch circuit, a filter circuit, and a series resonant circuit, the power amplifier circuit being configured to convert direct current (DC) power received from the battery or a DC adapter into alternative current (AC) and to implement zero-voltage switching (ZVS), a power transmission circuit including a power transmission coil configured to transmit power received from the power amplifier circuit to outside, a matching circuit located between and connected to the power amplifier circuit and the power transmission circuit, the matching circuit being configured to match an impedance of the power amplifier circuit and the power transmission circuit, and a negative voltage detection circuit connected to the filter circuit of the power amplifier circuit and configured to detect a negative voltage generated in the filter circuit, and wherein the negative voltage detection circuit includes a voltage dividing circuit including a positive voltage power supply and a plurality of resistors, the voltage dividing circuit being configured to convert the negative voltage generated in the filter circuit of the power amplifier circuit into a positive voltage in a predetermined range, a voltage sensor configured to detect the positive voltage, and a low-pass filter located between and connected to the voltage dividing circuit and the voltage sensor.
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公开(公告)号：US20230101152A1
公开(公告)日：2023-03-30
申请号：US17954825
申请日：2022-09-28
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Beomwoo GU , Daehyun KIM , Jaeseok PARK , Jaehyun PARK , Sungku YEO , Jeongman LEE
Abstract: A wireless power transmitting device includes: a transistor configured to output a signal corresponding to a set operating frequency, based on an input signal and a driving voltage; a matching circuit connected with the transistor; a transmission coil connected with the matching circuit; an LC resonance circuit connected in parallel between the transistor and the matching circuit and configured to transfer a signal corresponding to at least one harmonic frequency of the operating frequency; and an impedance sensing circuit connected with the LC resonance circuit and configured to sense a load impedance of the wireless power transmitting device based on the signal corresponding to the at least one harmonic frequency transferred through the LC resonance circuit. The matching circuit is configured to provide impedance matching with the sensed load impedance by adjusting an impedance of the matching circuit or an impedance of the transmission coil.
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4.发明申请公开(公告)号：US20220190621A1
公开(公告)日：2022-06-16
申请号：US17553233
申请日：2021-12-16
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Beomwoo GU , Jaehyun PARK , Kangho BYUN , Jaesun SHIN , Chongmin LEE
Abstract: Provided is an electronic device including: a battery, a resonant circuit including a coil and a capacitor configured to wirelessly receive power, a rectifying circuit configured to rectify an alternating current power provided from the resonant circuit to a direct current power, a DC/DC converter configured to convert the direct current power provided from the rectifying circuit and to output the converted direct current power, a charging circuit configured to charge the battery using the converted direct current power provided form the DC/DC converter, a controller, and a communication circuit, wherein the controller is configured to: control the charging circuit to set a magnitude of a reference current of the charging circuit to a first value, the first value being less than a maximum value of an output current of the charging circuit, control the charging circuit to set the magnitude of the reference current to a second value greater than the first value, measure a magnitude of an output current of the charging circuit after setting the magnitude of the reference current to the second value, control, based on a difference between the measured magnitude and the second value being less than or equal to a specified set value, the charging circuit to set the magnitude of the reference current to a third value greater than the second value, and control, based on the difference between the measured magnitude and the second value exceeding the specified set value, the charging circuit to set the magnitude of the reference current to the first value to receive wireless power.
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公开(公告)号：US20220158492A1
公开(公告)日：2022-05-19
申请号：US17523476
申请日：2021-11-10
Applicant: Samsung Electronics Co., Ltd.
Inventor： Beomwoo GU , Jaehyun PARK , Chongmin LEE , Bohwan CHOI
Abstract: 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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Patent Agency Ranking
6.发明公开公开(公告)号：US20240305137A1
公开(公告)日：2024-09-12
申请号：US18582066
申请日：2024-02-20
Applicant: Samsung Electronics Co., Ltd.
Inventor： Beomwoo GU , Minbeom KO , Jaeseok PARK , Jaehyun PARK , Kangho BYUN , Sungku YEO
CPC classification number: H02J50/12 , H02J50/005 , H02J50/40 , H02J50/80
Abstract: According to an embodiment, a wireless power reception device may include: a housing, a first coil, and a power processing circuit configured to process power wirelessly received from the outside through the first coil. The housing may include a first surface facing a first direction, a second surface facing a second direction opposite the first direction, and a third surface surrounding a space between the first surface and the second the surface. The width of the third surface may be smaller than the width of the first surface. The first coil may be disposed in a region including a region substantially parallel to the third surface.
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公开(公告)号：US20240297533A1
公开(公告)日：2024-09-05
申请号：US18662026
申请日：2024-05-13
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Beomwoo GU , Jaehyun PARK , Chongmin LEE , Bohwan CHOI
CPC classification number: H02J50/12 , H01F27/42 , H02J2310/22
Abstract: 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：US20230170743A1
公开(公告)日：2023-06-01
申请号：US18070854
申请日：2022-11-29
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Beomwoo GU , Jaeseok PARK , Jaehyun PARK , Sungku YEO , Jungkyu HAN
Abstract: A wireless power transmitter may include a power amplifier configured to output an amplified signal based on an input signal and a driving voltage, a first LC resonant circuit connected in parallel to the power amplifier, a matching circuit, and a transmission coil connected to the matching circuit. The matching circuit may include a second LC resonant circuit including a first inductor and a first capacitor connected in series to the first inductor, and having one end connected to an output terminal of the power amplifier and one end of the first LC resonant circuit, and a second capacitor and a third capacitor respectively connected to the other end of the second LC resonant circuit. The first inductor may be configured to have an inductance value leading to an impedance of the second LC resonant circuit equal to or greater than a first predetermined magnitude at at least one second or higher harmonic frequency of an operating frequency of the input signal.
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公开(公告)号：US20230053209A1
公开(公告)日：2023-02-16
申请号：US17886029
申请日：2022-08-11
Applicant: Samsung Electronics Co., Ltd.
Inventor： Jaehyun PARK , Beomwoo GU , Jaeseok PARK , Sungku YEO , Youngho RYU , Kyungwoo LEE , Jeongman LEE
Abstract: An annular resonator and a wireless power transmitter are provided. The annular resonator includes upper and lower surfaces, outer and inner surfaces arranged along an annular shape, a plurality of conductors, and a plurality of capacitors connected to the plurality of conductors, respectively. Each conductor includes a first section arranged on the upper surface, a second section extending from the first section and arranged on the outer surface, a third section extending from the second section and arranged on the lower surface, and a fourth section extending from the third section and arranged on the inner surface. A first section of each of a first conductor, a second conductor, a third conductor, and a fourth conductor are sequentially arranged along the upper surface. A second section of each of the second conductor, the third conductor, the fourth conductor, and the first conductor are sequentially arranged along the outer surface.
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公开(公告)号：US20210376668A1
公开(公告)日：2021-12-02
申请号：US17330932
申请日：2021-05-26
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Jeongman LEE , Beomwoo GU , Jaeseok PARK , Jaehyun PARK , Sungku YEO , Chongmin LEE , Hyoseok HAN
Abstract: The disclosure provides an electronic device and a method for controlling wireless charging in the electronic device. An electronic device includes: a sensor, a battery, a resonance circuit configured to wirelessly receive power, a rectification circuit configured to rectify an alternating current (AC) power provided from the resonance circuit into a direct current (DC) power, a DC/DC converter configured to convert the DC power provided from the rectification circuit to output a converted power, a charging control circuit configured to charge the battery using the converted power provided from the DC/DC converter, and a controller, and the controller may be configured to: identify movement information of the electronic device corresponding to a value sensed via the sensor, identify a voltage value of the DC power rectified via the rectification circuit, and control an output of the DC/DC converter based on the movement information and the voltage value.
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