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公开(公告)号：US20250007313A1
公开(公告)日：2025-01-02
申请号：US18759430
申请日：2024-06-28
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mingi SONG , Juhyang LEE , Geonhong MIN , Kyungmin PARK , Changhak O , Inkook YOON , Hwarang CHA
Abstract: A first electronic device configured to receive power wirelessly according to an embodiment may include: a power receiving circuit including a plurality of capacitors, at least one coil, and at least one switch, a rectifier including a plurality of transistors, and a control circuit. The control circuit according to an embodiment may be configured to: set the plurality of capacitors and the at least one coil to a first connection state through the at least one switch, based on a frequency specified by a second electronic device transmitting power wirelessly; receive alternating current (AC) power wirelessly from the second electronic device through the power receiving circuit set to the first connection state; control the plurality of transistors included in the rectifier to rectify the power received from the second electronic device; identify a first voltage of power rectified to direct current (DC) through the rectifier; set the plurality of capacitors and the at least one coil to a second connection state through the at least one switch to increase an impedance of the plurality of capacitors and/or change a resonant frequency of the power, based on identifying that the first voltage is greater than a first threshold; and control the plurality of transistors included in the rectifier to freewheel the power received from the second electronic device.
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公开(公告)号：US11159040B2
公开(公告)日：2021-10-26
申请号：US16594575
申请日：2019-10-07
Applicant: Samsung Electronics Co., Ltd.
Inventor： Changhak O , Kwangseob Kim , Dongzo Kim , Mincheol Ha , Yongsang Yun
IPC: H02J50/12 , H02J7/02 , H02J50/80 , H02J50/70 , H02M7/5387
Abstract: A power control method for wireless charging and an electronic device therefor are provided. The electronic device, includes a coil, an inverter including gate inputs which are electrically connected to the coil, and at least one processor. The at least one processor is configured to control the gate inputs of the inverter in an anti symmetric manner to generate an output power, receive an output power reduction request from an external electronic device, based on receiving the output power reduction request, determine whether a ratio of ON-operations to OFF-operation of the gate inputs of the inverter is less than or equal to a designated ratio, and based on the ratio of ON-operations to OFF-operations of the gate inputs of the inverter being less than or equal to the designated ratio, modulate a phase of a voltage input into the gate inputs of the inverter to generate an output power.
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公开(公告)号：US12015282B2
公开(公告)日：2024-06-18
申请号：US17846380
申请日：2022-06-22
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mingi Song , Kyungmin Park , Changhak O
Abstract: According to an embodiment, a wireless power transmitting device may include a transmission coil, a DC/DC converter configured to output a driving voltage, an inverter configured to output AC power to the transmission coil, and a controller. The controller may be configured to output a first control signal for generating the AC power having a first frequency to the inverter, measure a demodulated voltage generated by demodulating a signal applied to the transmission coil, and output, to the inverter, a second control signal for generating the AC power having a second frequency different from the first frequency, based on a first peak-to-peak value identified in the demodulated voltage being a preset first value or more. The inverter may output the AC power having the second frequency to the transmission coil based on the second control signal. Other various embodiments are possible as well.
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公开(公告)号：US20210143683A1
公开(公告)日：2021-05-13
申请号：US17057234
申请日：2019-07-02
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mincheol HA , Kwangseob KIM , Kihyun KIM , Dongzo KIM , Jiwon KIM , Jihye KIM , Yunjeong NOH , Keumsu SONG , Changhak O , Kyungmin LEE , Hyungkoo CHUNG , Jongchul HONG , Yongsang YUN
Abstract: Various embodiments relating to an electronic device are disclosed, and according to an embodiment, the electronic device may comprise: a plurality of coils; a first power generation circuit electrically connected to at least one of the plurality of coils; a second power generation circuit electrically connected to at least one of the plurality of coils; and a control circuit, wherein when the approach of a second external electronic device is detected while first power is provided to a first external electronic device by using a first frequency via the first power generation circuit, the control circuit allows the frequency of the second power generation circuit to be configured to a second frequency different from a first frequency in order to provide second power to the second external electronic device. Other embodiments may be possible.
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5.发明申请公开(公告)号：US20200036227A1
公开(公告)日：2020-01-30
申请号：US16447113
申请日：2019-06-20
Applicant: Samsung Electronics Co., Ltd.
Inventor： Kwangseob KIM , Keumsu SONG , Changhak O , Dongzo KIM , Jihye KIM , Mincheol HA , Kihyun KIM , Jiwon KIM , Yunjeong NOH , Kyungmin LEE , Hyungkoo CHUNG , Jongchul HONG , Yongsang YUN
Abstract: An electronic device including a wireless charging coils, and an operating method thereof are provided. The electronic device includes a housing including a concave portion couplable to a protrusion of one or more external electronic devices, a first coil stored inside the housing, a second coil stored inside the housing, and disposed between the first coil and the concave portion, a power transmission circuit including a first connecting terminal electrically coupled to the first coil and a second connecting terminal electrically coupled to the second coil, and a control circuit. The control circuit configured to check a data packet received from the external electronic device which is in proximity to the electronic device, control to transmit first designated power to the external electronic device through the first coil wirelessly, and second designated power to the external electronic device through the second coil wirelessly by using the power transmission circuit.
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Patent Agency Ranking
公开(公告)号：US11831169B2
公开(公告)日：2023-11-28
申请号：US17430907
申请日：2020-02-13
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Changhak O , Hyungkoo Chung , Mincheol Ha , Yongsang Yun
CPC classification number: H02J50/10 , H02J7/00712 , H02J50/80
Abstract: Disclosed is a power transmission device for wirelessly supplying power to an external electronic device, the power transmission device comprising: a coil configured to transmit a wireless signal to the electronic device based on a transmission power; a power generation circuit configured to supply, to the coil, the transmission power generated based on an input voltage; and a control circuit electrically connected to the coil and the power generation circuit, wherein the control circuit is configured: to receive information about charging power from the electronic device; to determine whether a voltage drop event related to a drop of the internal voltage of the electronic device has occurred, based on the difference between the transmission power and the charging power; and to regulate the level of the input voltage based on results obtained from the determination.
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公开(公告)号：US11177666B2
公开(公告)日：2021-11-16
申请号：US16444409
申请日：2019-06-18
Applicant: Samsung Electronics Co., Ltd.
Inventor： Keumsu Song , Kwangseob Kim , Kihyun Kim , Dongzo Kim , Jiwon Kim , Jihye Kim , Yunjeong Noh , Changhak O , Hyungkoo Chung , Mincheol Ha , Jongchul Hong , Yongsang Yun
Abstract: An electronic device is provided. The electronic device includes a coil unit, a power transmission circuit electrically connected to the coil unit, and a control circuit configured to wirelessly transmit power using the coil unit, and the coil unit may include a first coil. The first coil may include a first layer wound in a first shape by a first number of turns, and a second layer extending from the first layer and wound in a second shape by a second number of turns, and the second layer may be disposed above the first layer to overlap the first layer.
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公开(公告)号：US20210036550A1
公开(公告)日：2021-02-04
申请号：US16929581
申请日：2020-07-15
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mincheol HA , Kwangseob KIM , Kihyun KIM , Dongzo KIM , Jihye KIM , Yunjeong NOH , Changhak O , Kyungmin LEE , Hyungkoo CHUNG
Abstract: An electronic device according to an embodiment may include: a wireless charging coil; a power transmission circuit configured to be electrically connected to the wireless charging coil; a wireless communication circuit configured to communicate with an external electronic device; and a control circuit. The control circuit may be configured to: transmit power to an external electronic device; obtain data corresponding to power received by the external electronic device in response to the transmitted power using the wireless communication circuit; obtain power loss based on the obtained data; stop transmitting the power to the external electronic device when the power loss exceeds a first threshold; and stop transmitting the power to the external electronic device according to whether an event related the power loss occurs even when the power loss is lower than the first threshold.
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9.发明授权公开(公告)号：US10673285B2
公开(公告)日：2020-06-02
申请号：US16283182
申请日：2019-02-22
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mincheol Ha , Changhak O , Kwangseob Kim , Dongzo Kim , Jiwon Kim , Jongchul Hong , Kihyun Kim , Yunjeong Noh , Jaewan Park , Hyungkoo Chung , Jihye Kim , Keumsu Song , Yongsang Yun , Sangmoo Hwangbo
Abstract: Various embodiments related to electronic devices are set forth herein. According to an embodiment, an electronic device comprises a coil, a power transmitting circuit electrically connected with the coil, a sensing circuit, and a control circuit. The control circuit is configured to wirelessly output, using the power transmitting circuit, a first designated power through the coil to an external electronic device, and identify, using the sensing circuit, first energy detected at the coil due to a foreign object of the electronic device. The control circuit is further configured to, when a magnitude of the energy falls within a first designated range, output, using the power transmitting circuit, a second designated power to the external electronic device, and when the magnitude of the energy falls within a second designated range, abstain from outputting the power to the external electronic device using the power transmitting circuit. Other embodiments are possible as well.
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公开(公告)号：US20230063671A1
公开(公告)日：2023-03-02
申请号：US17846380
申请日：2022-06-22
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mingi SONG , Kyungmin PARK , Changhak O
Abstract: According to an embodiment, a wireless power transmitting device may include a transmission coil, a DC/DC converter configured to output a driving voltage, an inverter configured to output AC power to the transmission coil, and a controller. The controller may be configured to output a first control signal for generating the AC power having a first frequency to the inverter, measure a demodulated voltage generated by demodulating a signal applied to the transmission coil, and output, to the inverter, a second control signal for generating the AC power having a second frequency different from the first frequency, based on a first peak-to-peak value identified in the demodulated voltage being a preset first value or more. The inverter may output the AC power having the second frequency to the transmission coil based on the second control signal. Other various embodiments are possible as well.
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