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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
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Beomwoo Gu , Kangho Byun , Sungku Yeo , Chongmin Lee , Bohwan Choi , Hyoseok Han
CPC classification number: H02J50/12 , H02J7/00308 , H02J7/007182 , H02J7/345
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：US11996704B2
公开(公告)日：2024-05-28
申请号：US17523476
申请日：2021-11-10
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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Patent Agency Ranking
公开(公告)号：US12107442B2
公开(公告)日：2024-10-01
申请号：US17667964
申请日：2022-02-09
Applicant: Samsung Electronics Co., Ltd.
Inventor： Jaehyun Park , Beomwoo Gu , Jaeseok Park , Sungku Yeo , Youngho Ryu , Bohwan Choi
CPC classification number: H02J50/70 , H01F27/263 , H02J7/02 , H02J50/12
Abstract: 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：US20240328827A1
公开(公告)日：2024-10-03
申请号：US18744014
申请日：2024-06-14
Applicant: Samsung Electronics Co., Ltd.
Inventor： Kyungmin LEE , Jinsoo Choi , Sungbum Park , Sangwook Lee , Bohwan Choi
CPC classification number: G01D5/20 , G01R19/0092 , G01R25/00 , H05B6/1236
Abstract: An induction device includes: a wireless power transmission circuit; a current sensor; and at least one processor connected to the wireless power transmission circuit and the current sensor, wherein the at least one processor is configured to output first power for detecting of an external device through the wireless power transmission circuit, identify a first phase of a first current by measuring the first current flowing through a transmission coil of the wireless power transmission circuit using the current sensor while outputting the first power, in a first state where the external device is not in proximity, identify a phase delay value between the first phase of the first current and a second phase of a second current, and identify a second state where the external device is in proximity when the identified phase delay value is equal to or greater than a designated threshold.
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公开(公告)号：US12081044B2
公开(公告)日：2024-09-03
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：US12074457B2
公开(公告)日：2024-08-27
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：US11923698B2
公开(公告)日：2024-03-05
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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