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公开(公告)号：US20230088690A1
公开(公告)日：2023-03-23
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：US20220285991A1
公开(公告)日：2022-09-08
申请号：US17664400
申请日：2022-05-20
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan KIM , Jihyun LEE , Bongsik KWAK , Yongcheol PARK
Abstract: A wireless power transmitter according to one embodiment of the present disclosure comprises a primary coil forming magnetic coupling with a secondary coil provided in a wireless power receiver and transmitting wireless power to the wireless power receiver, wherein the primary coil is formed by spirally winding a plurality of subcoils connected electrically in parallel while keeping the subcoils in contact with each other, and the subcoil is litz wire consisting of several conducting wires packed in a bundle.
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63.发明申请公开(公告)号：US20220239161A1
公开(公告)日：2022-07-28
申请号：US17715475
申请日：2022-04-07
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol PARK
Abstract: The present specification provides a wireless power transmission device comprising: a power conversion unit configured so as 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 so as to perform an initial calibration for a power parameter prior to the power transfer phase, receive, from the wireless power receiving device, a first received power packet indicating the power received by the wireless power receiving device during the power transfer phase, and detect a foreign object by using the received power and a first power loss determined on the basis of the initial calibration.
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公开(公告)号：US20220224163A1
公开(公告)日：2022-07-14
申请号：US17711758
申请日：2022-04-01
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol PARK
Abstract: The present invention relates to a wireless power transmitter and method for detecting a RFID/NFC card. Disclosed in the present application is a wireless power receiver comprising: a power pickup unit configured to receive, in a power transfer phase, wireless power generated by magnetic coupling from a wireless power transmitter; and a communications/control unit configured to transfer, in a negotiation phase, a first end-of-power-transfer (EPT) packet to the wireless power transmitter for detecting an RFID/NFC card, and to detect the RFID/NFC card during a re-ping time secured on the basis of the first EPT packet, wherein the first EPT packet instructs requesting the removal of a power signal for a predetermined time. As the process for detecting communication cards, such as RFID or NFC, between the wireless power transmitter and receiver is clearly defined, such RFID/NFC cards can be protected against getting destroyed by the wireless power, and a stable wireless power transfer can be achieved.
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65.发明申请公开(公告)号：US20220077893A1
公开(公告)日：2022-03-10
申请号：US17310089
申请日：2019-12-02
Applicant: LG ELECTRONICS INC.
Inventor： Jinkwon LIM , Jingu CHOI , Joonho PARK , Yongcheol PARK
Abstract: The present specification relates to a device and method for wirelessly transmitting power on the basis of the reestablishment of out-band communication. The present specification discloses a wireless power receiving device comprising a communication/control circuit configured to carry out the operations of: performing handover from in-band communication using operating frequencies to out-band communication using any frequencies except for the operating frequencies; transmitting power characteristic information to the wireless power transmitting device or receiving power characteristic information from the wireless power transmitting device through the out-band communication before entering a power transmission phase; and saving power state information determined during the power transmission phase. By defining an out-band communication reestablishment protocol for the wireless power transmitting device or wireless power receiving device, it is possible to improve the performance of wireless power transmission throughout-band communication reestablishment that is fast and efficient.
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Patent Agency Ranking
66.发明申请公开(公告)号：US20210044152A1
公开(公告)日：2021-02-11
申请号：US16979821
申请日：2019-03-07
Applicant: LG Electronics Inc.
Inventor： Yongcheol PARK , Gyunghwan YOOK
Abstract: The present invention relates to a device and method for supporting improved communication speed in a wireless power transmission system. The present specification provides a method comprising the steps of: generating wireless power at an operating frequency; configuring n, as the number of cycles per bit, which is used for transmitting one bit at the operating frequency; aligning each bit of the data with the n cycles; causing the operating frequency to transition between differential biphases according to the value of said each bit during the n cycles; and transmitting the wireless power to a wireless power receiving device on the basis of magnetic coupling at the transitioning operating frequency.
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67.发明申请公开(公告)号：US20210036555A1
公开(公告)日：2021-02-04
申请号：US17074514
申请日：2020-10-19
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol PARK
Abstract: The present specification provides a wireless power transmission device comprising: a power conversion unit configured so as 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 so as to perform an initial calibration for a power parameter prior to the power transfer phase, receive, from the wireless power receiving device, a first received power packet indicating the power received by the wireless power receiving device during the power transfer phase, and detect a foreign object by using the received power and a first power loss determined on the basis of the initial calibration.
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68.发明申请公开(公告)号：US20200373789A1
公开(公告)日：2020-11-26
申请号：US16990466
申请日：2020-08-11
Applicant: LG Electronics Inc.
Inventor： Yongcheol PARK , Kyunghwan KIM
Abstract: The present specification provides a wireless power reception apparatus comprising: a power pick-up unit configured to receive wireless power from a wireless power transmission apparatus by magnetic coupling with the wireless power transmission apparatus and convert an AC signal generated by the wireless power into a DC signal; a communication/control unit configured to receive the DC signal from the power pick-up unit and control the wireless power; and a load configured to receive the DC signal from the power pick-up unit. When foreign material is detected before power transmission, wireless power transmission is sustained on the basis of a safe basic power profile of 5 W or less, without interrupting power transmission, and thus, a charging delay can be prevented and the accuracy and reliability of detection of foreign material can be increased despite individual characteristics of the wireless power reception apparatus.
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公开(公告)号：US20190296799A1
公开(公告)日：2019-09-26
申请号：US16408226
申请日：2019-05-09
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol PARK
Abstract: Provided are a device and method for performing authentication in a wireless power transfer system. Provided is an authentication method in a wireless power transfer system including receiving a first packet including indication information on whether a target device supports an authentication function from the target device; transmitting, when the target device supports an authentication function, an authentication request message to the target device; receiving an authentication response message including a certificate on wireless charging from the target device in response to the authentication request message; and confirming authentication of the target device based on the authentication response message.
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公开(公告)号：US20190222062A1
公开(公告)日：2019-07-18
申请号：US16362074
申请日：2019-03-22
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol PARK
Abstract: A wireless power transmitter which performs communication with one or more wireless power receivers, includes a power converter including at least one coil configured to convert current into magnetic field, and a power transmission controller configured to communicate with a wireless power receiver based on a frame, wherein the frame includes a sync pattern and a plurality of slots which have different slot numbers respectively, wherein the sync pattern indicates a first slot as allocated to the wireless power receiver, wherein the power transmission controller receives a first packet from the wireless power receiver in the first slot having a first slot number, and receives a second packet from the wireless power receiver in a second slot having a second slot number, and wherein the second packet includes an information field indicating the first slot number.
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