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公开(公告)号：US20240154466A1
公开(公告)日：2024-05-09
申请号：US18284201
申请日：2022-03-28
Applicant: LG Electronics Inc.
Inventor： Taewook KWON , Gyunghwan YOOK , Jinho YOUN , Hongkwon KIM , Yongcheol PARK
Abstract: The present disclosure provides a method by which a wireless power transmitter transmits wireless power in a wireless power transmission system, and a device using same, the method comprising: receiving, from a wireless power receiver, information for sensing whether a foreign object (FO) is present; sensing, on the basis of the information, whether the FO is present before the transmission of wireless power; transmitting, on the basis of sensing that the FO is not present, the wireless power to the wireless power receiver and measuring a slot quality factor and a coupling factor on a slot while the wireless power is transmitted, wherein the slot quality factor is a quality factor used to determine whether the FO is inserted while the wireless power is transmitted, and the coupling factor is a factor related to the alignment between the wireless power transmitter and the wireless power receiver.
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公开(公告)号：US20230283119A1
公开(公告)日：2023-09-07
申请号：US18016585
申请日：2020-07-17
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan KIM , Seonghun LEE , Taewook KWON , Hyoungseok KIM , Hongkwon KIM
Abstract: A wireless power transmission apparatus includes a shielding plate, a transmission coil on the shielding plate, and a shielding member disposed on the shielding plate and configured to surround the transmission coil. The shielding plate may shield a magnetic field formed to a lower side of the transmission coil. The shield member can offset the magnetic field formed on the side of the transmission coil. Thus, the embodiment can minimize EMI or EMF caused by the magnetic field formed on the lower side and the side of the transmission coil.
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Patent Agency Ranking
3.发明公开公开(公告)号：US20240204573A1
公开(公告)日：2024-06-20
申请号：US18287120
申请日：2022-04-18
Applicant: LG Electronics Inc.
Inventor： Taewook KWON , Gyunghwan YOOK , Jinho YOUN , Hongkwon KIM , Yongcheol PARK
CPC classification number: H02J50/60 , H02J50/12 , H02J50/402 , H02J50/80 , H04B5/79
Abstract: The present disclosure provides a method for transmitting wireless power performed by a wireless power transmitter in a wireless power transmission system, and an apparatus using same, the method comprising: receiving information for detecting whether a foreign object (FO) exists from a wireless power receiver; detecting whether the FO exists before transmission of wireless power on the basis of the information; transmitting the wireless power to the wireless power receiver on the basis of detecting that the FO does not exist; and calculating a slot quality factor on a slot while transmitting the wireless power, wherein the slot quality factor is a quality factor used to determine whether an FO has been inserted while transmitting the wireless power, and a starting point of the slot is a point at which a voltage value of a coil in a wireless power transmitter is the maximum value and a current value of the coil is 0.
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4.发明公开公开(公告)号：US20240324076A1
公开(公告)日：2024-09-26
申请号：US18579711
申请日：2022-07-08
Applicant: LG ELECTRONICS INC.
Inventor： Sungkyu KIM , Seonghun LEE , Bongsik KWAK , Hongkwon KIM
CPC classification number: H05B6/1245 , H05B6/062 , H05B6/1236
Abstract: Discussed herein is an induction heating type cooktop including a glass upper plate configured to have a heating region to heat a cooking container, a working coil configured to generate a first magnetic field to heat the cooking container, an inverter comprising a switching element driven to allow a current to flow through the working coil, and a shield circuit configured to generate a second magnetic field to negate the effects of the first magnetic field.
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5.发明申请公开(公告)号：US20180014376A1
公开(公告)日：2018-01-11
申请号：US15622942
申请日：2017-06-14
Applicant: LG ELECTRONICS INC.
Inventor： Sanghyun PARK , Hongkwon KIM , Sangphil BYUN
CPC classification number: H05B33/0896 , B60Q1/30 , H05B33/0827 , Y02B20/36
Abstract: An input voltage stabilization circuit for a rear combination lamp includes: an optical output unit including a plurality of Organic Light Emitting Diodes (OLEDs); a voltage converter; and a feedback unit. The voltage converter is configured to supply an output voltage for driving the plurality of OLEDs by converting a first voltage supplied by a vehicle battery to the output voltage, the output voltage being different from the first voltage. The feedback unit is configured to provide, as feedback to the voltage converter, information regarding a maximum voltage value for the plurality of OLEDs. The voltage converter is further configured to adjust the output voltage based on the information provided as feedback by the feedback unit regarding the maximum.
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6.发明公开公开(公告)号：US20230344281A1
公开(公告)日：2023-10-26
申请号：US18024711
申请日：2021-09-06
Applicant: LG Electronics Inc.
Inventor： Hyoungseok KIM , Jaeyeol KIM , Seonghun LEE , Gyunghwan YOOK , Hongkwon KIM
CPC classification number: H02J50/80 , H02J50/60 , H02J50/402 , H02J50/12
Abstract: A wireless power transmitting device according to an embodiment of the present specification relates to a wireless power transmitting device for transmitting wireless power to a wireless power receiving device, and comprises: a power conversion circuit including a primary coil for transmitting the wireless power to the wireless power receiving device; and a communication/control circuit for communicating with the wireless power receiving device and controlling the power conversion circuit, wherein, before transmitting the wireless power to the wireless power receiving device, the communication/control circuit temporarily applies driving power to the primary coil and then stops the transmission of the driving power, and obtains a quality factor on the basis of a change in the voltage or current of the primary coil during a period of time in which the transmission of the driving power is stopped.
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7.发明公开公开(公告)号：US20230318363A1
公开(公告)日：2023-10-05
申请号：US18024675
申请日：2021-09-06
Applicant: LG Electronics Inc.
Inventor： Hyoungseok KIM , Jaeyeol KIM , Seonghun LEE , Gyunghwan YOOK , Hongkwon KIM
Abstract: A wireless power transmitting device according to an embodiment of the present specification transmits wireless power to a wireless power receiving device, and includes a power conversion circuit including a primary coil for transmitting the wireless power to the wireless power receiving device and a communication/control circuit for communicating with the wireless power receiving device and controlling the power conversion circuit, wherein, to detect foreign substances between the wireless power receiving device and the wireless power transmitting device, the communication/control circuit stops the transmission of the wireless power for a slot time, detects the foreign substances on the basis of a change in the voltage or current of the primary coil within the slot time, and sets the slot time to start from a point in time when the current of the primary coil is 0.
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