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公开(公告)号：US11289950B2
公开(公告)日：2022-03-29
申请号：US16713166
申请日：2019-12-13
Applicant: LG ELECTRONICS INC.
Inventor： Jaesoon Kwon , Hwanyong Kim , Beomseok Chae , Seonghun Lee
Abstract: A wireless charging apparatus is disclosed. The wireless charging apparatus includes a plurality of coil arrays disposed so as to partially overlap each other, and a shielding member disposed at one side of each of the coil arrays to block a leaked magnetic field. The coil arrays include a first coil array including a plurality of transmission coils disposed adjacent to each other, a second coil array including a smaller number of transmission coils than the first coil array and disposed under the first coil array, and a third coil array including the same number of transmission coils as the second coil array and disposed on the first coil array. As a result, it is possible to simultaneously charge a plurality of devices requiring different amounts of power.
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公开(公告)号：US09461479B2
公开(公告)日：2016-10-04
申请号：US14286672
申请日：2014-05-23
Applicant: LG ELECTRONICS INC.
Inventor： Beomseok Chae , Byungsang Jung , Jeongkyo Seo , Kwangmin Yoo , Junyoung Lee
CPC classification number: H02J50/12 , H02J7/0081 , H02J7/0093 , H02J7/025 , H02J17/00 , H02J50/80 , H02J2007/0096
Abstract: A wireless power transmitter including a power supply unit configured to supply an input voltage; a power conversion unit configured to generate wireless power based on a driving signal, generated by the supplied input voltage and a first pulse width modulation (PWM) signal, and transfer the wireless power to a wireless power receiver; and a power transmission control unit configured to receive a voltage value of a battery charged with the wireless power through a wireless network, and generate the first PWM signal based on the voltage value of the battery.
Abstract translation: 一种无线电力发射器，包括被配置为提供输入电压的电源单元; 功率转换单元，被配置为基于由所提供的输入电压和第一脉冲宽度调制（PWM）信号产生的驱动信号产生无线电力，并将无线电力传送到无线电力接收器; 以及电力传输控制单元，被配置为通过无线网络接收充电无线电力的电池的电压值，并且基于电池的电压值生成第一PWM信号。
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公开(公告)号：US10666082B2
公开(公告)日：2020-05-26
申请号：US15319980
申请日：2015-06-18
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park , Jaesung Lee , Jeongkyo Seo , Jungjoon Lee , Beomseok Chae , Jihyun Lee , Kyunghwan Kim
Abstract: The present disclosure relates to a foreign object detection method of a wireless power transmitter, and the method may include acquiring the frequency characteristics of a current flowing through a coil within the wireless power transmitter, comparing a peak frequency with a resonant frequency, and detecting whether or not the foreign object is placed on the transmitter through the comparison. In addition, the present disclosure relates to an interference avoidance method of a wireless power transmitter, and the method may include connecting a head unit of an automobile in a wireless manner through a communication device, receiving a first signal for avoiding interference from the head unit to stop wireless charging or change a first frequency band to a second frequency band, and receiving a second signal from the head unit to resume the wireless charging or change to the first frequency band.
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公开(公告)号：US11626758B2
公开(公告)日：2023-04-11
申请号：US17244562
申请日：2021-04-29
Applicant: LG ELECTRONICS INC.
Inventor： Jinmoo Park , Jeongkyo Seo , Beomseok Chae , Jaesung Lee , Jihyun Lee
IPC: H02J50/12 , H01F38/14 , B60L53/38 , B60L53/122 , B60L53/124 , B60L53/126 , H02J7/00 , H02J50/90
Abstract: A wireless power transmitter configured to transfer power to a wireless power receiver, including a coil assembly comprising first and second bottom coils placed adjacent to each other in a line and each consisting of a single layer of 11 turns and a top coil stacked on the first and second bottom coils and consisting of a single layer of 12 turns; and a full-bridge inverter. The first and second bottom coils and the top coil have a substantially rectangular frame structure with a through hole in the center, wherein the top coil lies on a plane surface in the middle between the first and second bottom coils, a distance from the center of the first and second bottom coils to the center of the top coil is set to a range of 21 mm to 25 mm, the first and second bottom coils have a height of 48 mm to 50 mm and a width of 43 mm to 45 mm, and the through hole in the first and second bottom coils has a height of 25 mm to 27 mm and a width of 21 mm to 23 mm, the top coil has a height of 45 mm to 47 mm and a width of 48.5 mm to 50.5 mm, and the through hole in the top coil has a height of 20 mm to 22 mm and a width of 24.5 mm to 26.5 mm, the first and second bottom coils and the top coil have a thickness of 0.9 mm to 1.3 mm, the wireless power transmitter uses an input voltage of the full-bridge inverter to control an amount of power which is transferred, the input voltage has a range of 1 V to 18 V, wherein an operating frequency to control the amount of the power is within a range of 140 kHz to 150 kHz, and the first and second bottom coils and the top coil have a inductance value within a range of 10.6 μH to 12.0 μH.
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公开(公告)号：US10097041B2
公开(公告)日：2018-10-09
申请号：US15029741
申请日：2014-09-23
Applicant: LG ELECTRONICS INC.
Inventor： Byungsang Jung , Beomseok Chae , Yongcheol Park , Kyunghwan Kim
Abstract: The present specification which relates to a wireless power transmission device and a control method, capable of transmitting and receiving power wirelessly comprises a power supply unit for supplying power to a receiving device to transmit power wirelessly; and a power transmission control unit for, periodically generating a waveform with a particular frequency, measuring an attenuation coefficient of the waveform at each cycle, measuring a variation in the attenuation coefficient at each cycle, and determining the type of an external material. The present invention has a technical feature wherein the power transmission control unit determines whether to transmit power wirelessly to the receiving device on the basis of the type of the external material.
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Patent Agency Ranking
公开(公告)号：US09821672B2
公开(公告)日：2017-11-21
申请号：US14770041
申请日：2014-02-28
Applicant: LG ELECTRONICS INC.
Inventor： Beomseok Chae , Jeongeon Park , Kihyun Jung , Jeongkyo Seo , Byungsang Jung
CPC classification number: B60L11/182 , B60L1/006 , H01F27/24 , H01F38/14 , H02J5/005 , H02J7/025 , H02J17/00 , H02J50/12 , H02J50/40 , H02J50/80 , H02J50/90 , Y02T10/7005 , Y02T10/7072 , Y02T90/122 , Y02T90/14
Abstract: An electronic device according to an embodiment of the present invention is configured to wirelessly receive electric power from a wireless electric power transfer device. A power reception unit of the electronic device comprises: a core having a predetermined length and having magnetic flux concentration portions formed at lengthwise side portions thereof; and a coil wound along an outer periphery of the core to form magnetic flux density in the magnetic flux concentration portions, the magnetic flux density having a magnitude equal to or larger than a predetermined value.
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公开(公告)号：US11936204B2
公开(公告)日：2024-03-19
申请号：US18186627
申请日：2023-03-20
Applicant: LG ELECTRONICS INC.
Inventor： Jinmoo Park , Jeongkyo Seo , Beomseok Chae , Jaesung Lee , Jihyun Lee
IPC: H02J50/12 , B60L53/122 , B60L53/124 , B60L53/126 , B60L53/38 , H01F38/14 , H02J7/00 , H02J50/90
CPC classification number: H02J50/12 , B60L53/122 , B60L53/124 , B60L53/126 , B60L53/38 , H01F38/14 , H02J7/00304 , H02J7/00308 , H02J50/90 , H02J7/00309
Abstract: A wireless power transmitter configured to transfer power to a wireless power receiver including primary coils comprising first and second bottom coils placed adjacent to each other in a line and each consisting of a single layer of 11 turns and a top coil stacked on the first and second bottom coils and consisting of a single layer of 12 turns; a shielding; and a full-bridge inverter, wherein the first and second bottom coils and the top coil have a substantially rectangular frame structure with a through hole in the center, wherein the top coil lies on a plane surface in the middle between the first and second bottom coils, wherein a distance from the center of the first and second bottom coils to the center of the top coil is set to a range of 21 mm to 25 mm, wherein the first and second bottom coils have a height of 48 mm to 50 mm and a width of 43 mm to 45 mm, and the through hole in the first and second bottom coils has a height of 25 mm to 27 mm and a width of 21 mm to 23 mm, wherein the top coil has a height of 45 mm to 47 mm and a width of 48.5 mm to 50.5 mm, and the through hole in the top coil has a height of 20 mm to 22 mm and a width of 24.5 mm to 26.5 mm, wherein the first and second bottom coils and the top coil have a thickness of 0.9 mm to 1.3 mm, wherein an amount of power which is transferred is controlled based on an input voltage of the full-bridge inverter, wherein the input voltage has a range of 1 V to 18 V, wherein an operating frequency to control the amount of the power is within a range of 140 kHz to 150 kHz, wherein an assembly of the primary coils and the shielding has a self-inductance value of 11.3 μH, wherein the full-bridge invertor drives a series capacitance, and wherein a value of the series capacitance is 139 nF.
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公开(公告)号：US11005299B2
公开(公告)日：2021-05-11
申请号：US16450263
申请日：2019-06-24
Applicant: LG ELECTRONICS INC.
Inventor： Jinmoo Park , Jeongkyo Seo , Beomseok Chae , Jaesung Lee , Jihyun Lee
IPC: H01F27/42 , H01F37/00 , H01F38/00 , H02J50/12 , H02J5/00 , H01F38/14 , B60L53/38 , B60L53/122 , B60L53/124 , B60L53/126 , H02J7/02 , H02J50/90
Abstract: A wireless power transmitter that transfers power to a wireless power receiver includes a coil assembly comprising first and second bottom coils placed adjacent to each other in a line and each consisting of a single layer of 11 turns and a top coil stacked on the first and second bottom coils and consisting of a single layer of 12 turns; a series capacitance; a shielding extending to at least 2 mm beyond an outer boundary of the coil assembly, has a thickness of at least 1.5 mm and being composed of Mn—Zn; and a full-bridge inverter driving each of coils included in the coil assembly individually.
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9.发明申请公开(公告)号：US20200023999A1
公开(公告)日：2020-01-23
申请号：US16574460
申请日：2019-09-18
Applicant: LG ELECTRONICS INC.
Inventor： Beomseok Chae , Hyunjai Shim , Sanghak Lee , Jeongkyo Seo
Abstract: The present invention provides a method for charging a battery of an unmanned aerial robot at a station. More specifically, the station monitors a voltage of the battery and charges the battery using wired charging or wireless charging when the voltage of the battery is a threshold voltage value or less. The station controls the unmanned aerial robot such that the unmanned aerial robot performs a specific operation to lower the voltage to a predetermined voltage or less when the voltage is higher than a specific level. The specific level is the specific level is one of a plurality of levels classified according to whether or not the voltage is lowered to the predetermined voltage or less through the specific operation within a first specific time and the specific operation is changed according to each of the plurality of levels.
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公开(公告)号：US11492110B2
公开(公告)日：2022-11-08
申请号：US16499690
申请日：2019-07-23
Applicant: LG ELECTRONICS INC.
Inventor： Seokhee Yi , Nakyeong Kim , Jeongkyo Seo , Kwangho An , Beomseok Chae
Abstract: A station recognition and a landing method are disclosed. More specifically, an unmanned aerial robot includes a camera sensor configured to capture a first pattern that is marked on a station cover and is used for a station identification and a second pattern that is marked inside a station and is used for a precision landing; a transceiver configured to transmit and receive a radio signal; and a processor functionally connected to the camera sensor and the transceiver, wherein the processor is configured to determine a landing station for landing based on the first pattern captured by the camera sensor, control the transceiver to transmit a radio signal that indicates the landing station to open the station cover, and perform the precision landing at the landing station based on the second pattern of the landing station.
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