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11.发明授权公开(公告)号：US12170449B2
公开(公告)日：2024-12-17
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
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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公开(公告)号：US20240372403A1
公开(公告)日：2024-11-07
申请号：US18775419
申请日：2024-07-17
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park , Gyunghwan Yook
Abstract: A wireless power transmission apparatus including a controller configured to initiate a digital ping to solicit a response from a wireless power reception apparatus, receive the response from the wireless power reception apparatus, and perform a negotiation for a first power level with the wireless power reception apparatus, and a power converter configured to transmit a wireless power to the wireless power reception apparatus based on the first power level, wherein the controller is configured to transmit, to the wireless power reception apparatus in response to a received power packet, a bit pattern response requesting a communication by the wireless power transmission apparatus to change the first power level, and transmit a packet related to a second power level to the wireless power reception apparatus, and wherein the bit pattern response is defined as a pattern different from a bit pattern for an 8-bit ACK response, a bit pattern for an 8-bit NAK response and a bit pattern for an 8-bit ND response.
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公开(公告)号：US12095284B2
公开(公告)日：2024-09-17
申请号：US18018679
申请日：2021-07-30
Applicant: LG Electronics Inc.
Inventor： Jinho Youn , Jingu Choi , Gyunghwan Yook , Yongcheol Park
Abstract: A wireless power receiving device according to one embodiment of the present specification comprises: a power pickup circuit for receiving wireless power from a wireless power transmitting device; and a communication/control circuit for communicating with the wireless power transmitting device by using in-band communication using a power signal of the wireless power and/or out-band communication, which is wireless communication that differs from the in-band communication, and for controlling the reception of the wireless power, wherein the communication/control circuit terminates the connection of the out-band communication on the basis of the removal of the power signal from the wireless power transmitting device in a state in which the connection of the wireless power transmitting device and the out-band communication is established.
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公开(公告)号：US12088123B2
公开(公告)日：2024-09-10
申请号：US17919707
申请日：2021-04-20
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park , Minsoo Lee , Gyunghwan Yook , Jingu Choi
CPC classification number: H02J50/80 , H02J50/12 , H02J50/40 , H04B5/79 , H04W12/06 , H02J50/10 , H02J50/15 , H02J50/20
Abstract: A wireless power reception device according to an embodiment of the present specification comprises a controller for: receiving wireless power from a wireless power transmission device, and performing power pickup for receiving the wireless power from the wireless power transmission device by magnetic coupling with the wireless power transmission device at an operating frequency; and communicating with the wireless power transmission device by using at least one of in-band communication using the operating frequency and out-band communication using a frequency other than the operating frequency, and controlling reception of the wireless power, wherein, in the power transmission step of receiving the wireless power, the controller transmits or receives, using the in-band communication, a message for controlling the wireless power, and transmits or receives, using the out-band communication, an authentication message for authentication of the wireless power transmission device.
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15.发明授权公开(公告)号：US12021397B2
公开(公告)日：2024-06-25
申请号：US18302938
申请日：2023-04-19
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park , Joonho Park , Gyunghwan Yook
Abstract: The present invention relates to an apparatus and a method for performing power calibration in a wireless power transmission system. The present specification provides a wireless power transmission apparatus comprising: a power conversion unit configured to transmit, in a power transfer phase, wireless power generated on the basis of magnetic coupling to a wireless power receiving device; and a communication/control unit configured to perform an initial calibration for a power parameter prior to the power transfer phase, receive a first received power packet from the wireless power receiving device indicating the power received by the wireless power receiving device during the power transfer phase, and detect foreign matter by using the received power and a first power loss determined on the basis of the initial calibration. It is possible to adaptively respond to a newly changed wireless charging environment to calibrate transmission power and reception power, and it is possible to detect foreign matter more precisely by detecting a power loss on the basis of the calibrated transmission and reception power.
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Patent Agency Ranking
公开(公告)号：US11532957B2
公开(公告)日：2022-12-20
申请号：US17313572
申请日：2021-05-06
Applicant: LG Electronics Inc.
Inventor： Yongcheol Park , Gyunghwan Yook
Abstract: A wireless power transmitter including a power conversion unit configured to transmit wireless power generated based on magnetic coupling in a power transfer phase and a control unit configured to receive, from the wireless power receiver operating at a first operating point, a first received power packet of the first operating point and a second received power packet of the first operating point based on the first received power packet of the first operating point and the second received power packet of the first operating point and configured to receive a first received power packet of the second operating point and a second received power packet of the second operating point related to power calibration and construct a second power calibration curve based on the first received power packet of the second operating point and the second received power packet of the second operating point.
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公开(公告)号：US11031829B2
公开(公告)日：2021-06-08
申请号：US16938546
申请日：2020-07-24
Applicant: LG Electronics Inc.
Inventor： Yongcheol Park , Gyunghwan Yook
Abstract: A wireless power transmitter including a power conversion unit configured to transmit wireless power generated based on magnetic coupling in a power transfer phase and a control unit configured to receive, from the wireless power receiver operating at a first operating point, a first received power packet of the first operating point and a second received power packet of the first operating point based on the first received power packet of the first operating point and the second received power packet of the first operating point and configured to receive a first received power packet of the second operating point and a second received power packet of the second operating point related to power calibration and construct a second power calibration curve based on the first received power packet of the second operating point and the second received power packet of the second operating point.
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公开(公告)号：US12034318B2
公开(公告)日：2024-07-09
申请号：US17988613
申请日：2022-11-16
Applicant: LG Electronics Inc.
Inventor： Yongcheol Park , Gyunghwan Yook
Abstract: A wireless power transmitter including a power conversion unit configured to transmit wireless power generated based on magnetic coupling in a power transfer phase and a control unit configured to receive, from the wireless power receiver operating at a first operating point, a first received power packet of the first operating point and a second received power packet of the first operating point based on the first received power packet of the first operating point and the second received power packet of the first operating point and configured to receive a first received power packet of the second operating point and a second received power packet of the second operating point related to power calibration and construct a second power calibration curve based on the first received power packet of the second operating point and the second received power packet of the second operating point.
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公开(公告)号：US11848572B2
公开(公告)日：2023-12-19
申请号：US17597790
申请日：2020-07-27
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan Kim , Gyunghwan Yook , Hyoungseok Kim , Hwanyong Kim
Abstract: A wireless power reception apparatus according to an embodiment of the present specification comprises: a power pickup circuit for receiving, by magnetic coupling to a wireless power transmission apparatus, wireless power from the wireless power transmission apparatus; and a communication/control circuit for communicating with the wireless power transmission apparatus and controlling the received wireless power, wherein the communication/control circuit transmits, before entering a power transmission phase, to the wireless power transmission apparatus, information regarding a first reference quality factor Qt1′(ref) measured at a first frequency f1(ref) and information regarding a second reference quality factor Qt2′(ref) measured at a second frequency f2(ref).
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20.发明公开公开(公告)号：US20230261522A1
公开(公告)日：2023-08-17
申请号：US18304677
申请日：2023-04-21
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park , Gyunghwan Yook
CPC classification number: H02J50/10 , H02J50/80 , H02J50/12 , H02J50/005
Abstract: A wireless power transmission apparatus including a controller configured to initiate a digital ping to solicit a response from a wireless power reception apparatus, perform a negotiation for a first available power indicator with the wireless power reception apparatus; and a power converter configured to transmit a wireless power to the wireless power reception apparatus according to the first available power indicator, wherein the controller is configured to transmit, to the wireless power reception apparatus in response to a received power packet, a bit pattern response requesting a communication by the wireless power transmission apparatus to change the first available power indicator, and transmit a packet related to a second available power indicator to the wireless power reception apparatus, and wherein the bit pattern response is defined as a pattern different from a bit pattern for an 8-bit ACK response, a bit pattern for an 8-bit NAK response and a bit pattern for an 8-bit ND response.
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