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公开(公告)号：US20230118967A1
公开(公告)日：2023-04-20
申请号：US17969283
申请日：2022-10-19
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Bohwan CHOI , Jinsu CHOI , Sungbum PARK , Kyungmin LEE , Sangwook LEE
Abstract: A first electronic device for wirelessly transmitting power may include a power transmission circuit, memory, a pulse generator, a foreign object detection circuit configured to detect a foreign object located in a path in which power is wirelessly transmitted through the power transmission circuit, and a control circuit. The control circuit may be configured to wirelessly transmit power to a second electronic device, based on an alternating current (AC) input voltage applied to the power transmission circuit, generate a trigger signal synchronized with a first time corresponding to a specified voltage of the input voltage through the pulse generator, store an output value of the foreign object detection circuit in the memory based on the trigger signal, the output value being identified at the first time, continuously obtain the output value stored in the memory from the memory during a specified time until before the trigger signal of a next period is received at the memory from the pulse generator, and detect the foreign object based on the output value obtained during the specified time.
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公开(公告)号：US20240397660A1
公开(公告)日：2024-11-28
申请号：US18798207
申请日：2024-08-08
Applicant: Samsung Electronics Co., Ltd.
Inventor： Joonhong KIM , Youngho RYU , Daehyun KIM , Jihoon KIM , Youngjun PARK , Kyungmin LEE , Bohwan CHOI
Abstract: An electronic device is provided. The electronic device includes a power source, memory storing one or more computer programs, a dielectric heating device, and one or more processors communicatively coupled to the power source, the memory, and the dielectric heating device, wherein the dielectric heating device includes a first electrode connected to the power source, and a second electrode connected to the power source and arranged to be apart from the first electrode in a direction away from one surface of the first electrode, wherein the second electrode includes a plurality of second unit electrodes arranged at intervals in a longitudinal direction and a width direction, wherein the dielectric heating device heats an object to be heated arranged between the first electrode and the second electrode, and 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 electronic device to determine an electrode distance, which is a linear distance between the first electrode and the second unit electrodes, based on an estimated moisture content value of a partial region of the object being heated arranged on each of the second unit electrodes.
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公开(公告)号：US20250081300A1
公开(公告)日：2025-03-06
申请号：US18949243
申请日：2024-11-15
Applicant: Samsung Electronics Co., Ltd.
Inventor： Jinsoo CHOI , Taedong GOH , Jihoon KIM , Minsik CHO , Bohwan CHOI , Youngho RYU
IPC: H05B6/48 , H03K17/687 , H05B6/54
Abstract: A dielectric heating device is provided. The dielectric heating device includes at least one power source, a load circuit including a plurality of electrodes and at least one inductor, and at least one driving circuit configured to output alternating-current power to the load circuit by using power provided from the at least one power source, wherein the plurality of electrodes include a plurality of top electrodes arranged in substantially the same plane, and one bottom electrode arranged in a plane parallel to the plane formed by the plurality of top electrodes.
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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：US20240250559A1
公开(公告)日：2024-07-25
申请号：US18628465
申请日：2024-04-05
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Kyungmin LEE , Sungbum PARK , Sangwook LEE , Bohwan CHOI , Jinsoo CHOI
Abstract: A wireless power transmission device including a power transmission circuit; and at least one processor, where the at least one processor is configured to: output a first power through the power transmission circuit and identify a first phase of a first current or a first voltage by an external wireless power receiver before wireless power transmission, identify a second phase of a second current or a second voltage by the external wireless power receiver through the power transmission circuit while outputting the first power, identify a difference between the first phase and the second phase, identify a difference between the first phase and the second phase, identify the external wireless power receiver based on the difference between the first phase and the second phase, and control the power transmission circuit to transmit a second power to the identified external wireless power receiver.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20230333202A1
公开(公告)日：2023-10-19
申请号：US18338897
申请日：2023-06-21
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Beomwoo GU , Jaehyun PARK , Hyunseok SHIN , Jeongman LEE , Chongmin LEE , Bohwan CHOI , Hyoseok HAN
CPC classification number: G01S5/0284 , H02J50/90 , H02J50/80 , H02J50/12
Abstract: According to various embodiments, a method of operating a wireless power reception device may comprise: confirming information about the location of the wireless power reception device with respect to a wireless power transmission device based on a first signal received from the wireless power transmission device using at least one communication module of the wireless power reception device; confirming information about a first charging range of the wireless power transmission device based on a second signal received from the wireless power transmission device using the at least one communication module; and displaying the location of the wireless power reception device as a first icon and the first charging range as a line or a plane on a display of the wireless power reception device based on the information about the location of the wireless power reception device and the information about the first charging range of the wireless power transmission device.
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公开(公告)号：US20230261529A1
公开(公告)日：2023-08-17
申请号：US18099029
申请日：2023-01-19
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sangwook LEE , Sungbum PARK , Kyungmin LEE , Bohwan CHOI , Jinsoo CHOI
Abstract: According to embodiments, a wireless power transmitter may include: a communication module comprising communication circuitry; a power transmission circuit configured to transmit wireless power; and a processor. The processor may be configured to: establish a communication connection with a wireless power receiver using the communication module, control the communication module to transmit information about a first period to the wireless power receiver via the communication connection, control the power transmission circuit to transmit first power of a first frequency and a first magnitude to an outside, control the communication module to receive information about a second frequency of second power received at the wireless power receiver from the wireless power receiver via the communication connection, control the communication module to release the communication connection, based on the first frequency being different from the second frequency, and control the power transmission circuit to transmit third power of a magnitude different from the first magnitude of the first power to the outside during the first period, based on the first frequency corresponding to or substantially identical to the second frequency.
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公开(公告)号：US20220376558A1
公开(公告)日：2022-11-24
申请号：US17664365
申请日：2022-05-20
Applicant: Samsung Electronics Co., Ltd.
Inventor： Jinsoo CHOI , Bohwan CHOI , Sungbum PARK , Youngho RYU , Kyungmin LEE , Sangwook LEE
Abstract: A detection coil includes a first sub coil disposed on a first PCB, the first sub coil includes a first part, and a second part that is disposed under the first part and that includes: one end connected to one end of the first part and is wound in a direction opposite to a direction the first part is wound. The detection coil includes a second sub coil disposed on a second PCB and including a third part and a fourth part disposed under the third part. The fourth part includes one end connected to one end of the third part, and is wound in a direction opposite to a direction the third part is wound. The first and second parts have polygonal shapes symmetrical to each other. The third and fourth parts have polygonal shapes symmetrical to each other. The first and second sub coils are arranged to partially overlap each other.
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公开(公告)号：US20220360110A1
公开(公告)日：2022-11-10
申请号：US17683614
申请日：2022-03-01
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Beomwoo GU , Kangho BYUN , Sungku YEO , Chongmin LEE , Bohwan CHOI , Hyoseok HAN
Abstract: 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：US20240223020A1
公开(公告)日：2024-07-04
申请号：US18610705
申请日：2024-03-20
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sangwook LEE , Kyungmin LEE , Bohwan CHOI , Jinsoo CHOI , Sungbum PARK
Abstract: The disclosure relates to an electronic device and a method for detecting a foreign body, wherein a control circuit of the electronic device may be configured to: supply transmission power to a power transmission circuit; identify, on the basis of a low power wireless communication signal, whether an external device is present in a partial area of the externally exposed surface of the electronic device, which corresponds to a resonant circuit; on the basis of the presence of the external device, apply a high frequency current to the resonant circuit and transmit transmission power generated in the resonant circuit to the external device; obtain analog digital converter samples in a half-wave rectified direct current interval of a direct current link voltage corresponding to a transmission current detected in the power transmission circuit; and detect a foreign body on the basis of the analog digital converter samples.
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