公开(公告)号：US11996705B2

公开(公告)日：2024-05-28

申请号：US17664400

申请日：2022-05-20

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghwan Kim ,  Jihyun Lee ,  Bongsik Kwak ,  Yongcheol Park

IPC: H02J50/12 ,  H01F5/00 ,  H01F38/14 ,  H02J50/40

CPC classification number: H02J50/12 ,  H01F5/00 ,  H01F38/14 ,  H02J50/40

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.

公开(公告)号：US11949254B2

公开(公告)日：2024-04-02

申请号：US17594165

申请日：2019-11-29

Applicant: LG ELECTRONICS INC.

Inventor： Jingu Choi ,  Jinkwon Lim ,  Minsoo Lee ,  Joonho Park ,  Yongcheol Park

IPC: H02J50/80 ,  H02J50/10 ,  H04B1/00 ,  H04B5/00

CPC classification number: H02J50/80 ,  H02J50/10 ,  H04B1/005 ,  H04B5/0037

Abstract: The present invention relates to a near field communication method and device in a wireless power transmission system. A wireless power receiving device comprises: a power pick-up circuit configured to receive wireless power from a wireless power transmitting device having a primary coil by magnetic coupling to the wireless power transmitting device at an operating frequency and convert an alternating current signal generated from the wireless power into a direct current signal; a communication circuit configured to perform in-band communication with the wireless power transmitting device by using the operating frequency and perform out-band communication with the wireless power transmitting device or another device by using a frequency other than the operating frequency; and a control circuit configured to control an overall operation of the wireless power receiving device, wherein a first connection parameter for out-band communication between the wireless power transmitting device and the wireless power receiving device can be set equal to a second connection parameter for out-band communication between the wireless power transmitting device and another wireless power receiving device.

公开(公告)号：US11941602B2

公开(公告)日：2024-03-26

申请号：US17597504

申请日：2020-06-29

Applicant: LG ELECTRONICS INC.

Inventor： Jinkwon Lim ,  Minsoo Lee ,  Jingu Choi ,  Joonho Park ,  Jaehyu Kim ,  Yongcheol Park

IPC: H02J50/12 ,  G06Q20/32 ,  H02J50/60 ,  H02J50/40

CPC classification number: G06Q20/32 ,  H02J50/12 ,  H02J50/60 ,  H02J50/40

Abstract: According to an aspect of the present invention, a wireless power reception device includes: a power pick-up circuit which is configured to form magnetic coupling with a wireless power transmission device and receive wireless power from the wireless power transmission device; and a communication/control circuit which is configured to perform at least one among control of the transmission of the wireless power and data transmission and reception on the basis of communication with the wireless power transmission device, wherein the communication/control circuit can receive a check message for checking payment information from the wireless power transmission device and perform a payment procedure for wireless power transmission, and can provide a user interface related to information for the payment procedure.

公开(公告)号：US11916615B2

公开(公告)日：2024-02-27

申请号：US17310089

申请日：2019-12-02

Applicant: LG ELECTRONICS INC.

Inventor： Jinkwon Lim ,  Jingu Choi ,  Joonho Park ,  Yongcheol Park

IPC: H04B5/00 ,  H02J50/80 ,  H02J50/10 ,  H04W36/00 ,  H02J7/00 ,  H02J7/02 ,  H02J50/40 ,  H02J50/60

CPC classification number: H04B5/0037 ,  H02J7/00045 ,  H02J7/02 ,  H02J50/10 ,  H02J50/80 ,  H04W36/03 ,  H02J50/40 ,  H02J50/60

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.

公开(公告)号：US11817717B2

公开(公告)日：2023-11-14

申请号：US17593261

申请日：2020-03-16

Applicant: LG ELECTRONICS INC.

Inventor： Hyengcheul Choi ,  Bongsik Kwak ,  Hyunggeol Kwak ,  Sungkyu Kim ,  Jonggu Kim ,  Jinhong Kim ,  Sooyong Park ,  Yongcheol Park ,  Joonho Park ,  Seonghun Lee

IPC: H02J50/12 ,  H02J50/80 ,  H04B5/00 ,  H02J50/40 ,  H02J50/10

CPC classification number: H02J50/12 ,  H02J50/10 ,  H02J50/40 ,  H02J50/80 ,  H04B5/0031 ,  H04B5/0037 ,  H04B5/0081

Abstract: The present specification relates to a wireless power receiving device, receiving method, and receiving system, the device comprising individual rectifiers for each receiving coil, wherein the individual rectifiers comprise isolators for isolating a receiving coil for PC0 from a receiving coil for PC1.

公开(公告)号：US11728694B2

公开(公告)日：2023-08-15

申请号：US17990227

申请日：2022-11-18

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park

IPC: H02J50/80 ,  H02J50/10 ,  H02J50/40

CPC classification number: H02J50/80 ,  H02J50/10 ,  H02J50/40

Abstract: A wireless power transmitter according to one embodiment of the present disclosure transmits wireless power to a wireless power receiver, receives a first received power packet including an estimated received power value indicating a first calibration data point from the wireless power receiver after a negotiation phase, transmits ACK in response to the first received power packet, receives a second received power packet including an estimated received power value indicating a second calibration data point from the wireless power receiver, transmits ACK in response to the second received power packet, receives a new second received power packet including an estimated received power value indicating a third calibration data point from the wireless power receiver, transmits ACK in response to the new second received power packet, and constructs a power calibration curve using the first received power packet, the second received power packet, and the new second received power packet.

公开(公告)号：US11689064B2

公开(公告)日：2023-06-27

申请号：US17711758

申请日：2022-04-01

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park

IPC: H02J50/60 ,  H02J50/80 ,  H02J50/12 ,  G06K19/07 ,  H04B1/02 ,  H04B5/00

CPC classification number: H02J50/60 ,  G06K19/07 ,  H02J50/12 ,  H02J50/80 ,  H04B1/02 ,  H04B5/0031 ,  H04B5/0037

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.

公开(公告)号：US11641220B2

公开(公告)日：2023-05-02

申请号：US16490691

申请日：2019-04-16

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park

IPC: H02J50/80 ,  H04B5/00 ,  H02J50/12 ,  H02J50/40 ,  H02J50/60 ,  H02J50/10 ,  G06F1/26 ,  H04W12/069

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.

公开(公告)号：US11637648B2

公开(公告)日：2023-04-25

申请号：US17272768

申请日：2019-09-03

Applicant: LG ELECTRONICS INC.

Inventor： Jaeyeol Kim ,  Hyoungseok Kim ,  Yongcheol Park ,  Dohyeon Son ,  Jinho Youn ,  Seonghun Lee

IPC: H04L1/00 ,  H02J50/80 ,  H02J50/40 ,  H04L69/24 ,  H02J50/12 ,  H02J7/02 ,  H04L1/20

Abstract: The present disclosure relates to an apparatus and a method for supporting an improved communication speed in a wireless power transmission system. In such present specification, provided is the method comprising the steps of: transmitting at least one data packet to a wireless power reception apparatus; receiving, from the wireless power reception apparatus, a first request packet requesting a change in a communication speed of the wireless power transmission apparatus; and changing the communication speed of the wireless power transmission apparatus on the basis of the first request packet, and transmitting, at the changed communication speed, a first response packet in response to the first request packet to the wireless power reception apparatus.

公开(公告)号：US11469627B2

公开(公告)日：2022-10-11

申请号：US17310110

申请日：2019-10-02

Applicant: LG ELECTRONICS INC.

Inventor： Jingu Choi ,  Jinkwon Lim ,  Taeyoung Song ,  Yongcheol Park ,  Joonho Park

IPC: H02J50/00 ,  H02J50/80 ,  H02J50/12 ,  H02J50/40 ,  H02J7/02 ,  H04B5/00 ,  H02J50/60

Abstract: The present disclosure relates to a device and method for wireless power transfer to multiple devices using a multi-coil. The device disclosed in the specification comprises: a power pickup unit configured to receive wireless power from a wireless power transfer device having a plurality of primary coils at an operation frequency by magnetic coupling to the wireless power transfer device and convert an alternating current signal generated by the wireless power into a direct current signal; a communication/control unit including an in-band communication module configured to be supplied with the direct current signal from the power pickup unit and perform communication with the wireless power transfer device by using the operating frequency, and an out-band communication module configured to perform communication with the wireless power transfer device by using a frequency other than the operating frequency; and a load configured to be supplied with the direct current signal from the power pickup unit. In a one-to-multiple wireless power transfer system using a multi-coil, various applications of wireless power can be efficiently supported by defining configuration information, control information, management information, and procedures for the exchanges thereof as an out-band communication protocol.