公开(公告)号：US11296556B2

公开(公告)日：2022-04-05

申请号：US16685874

申请日：2019-11-15

Applicant: LG ELECTRONICS INC.

Inventor： Jihyun Lee ,  Seonghun Lee ,  Bongsik Kwak ,  Joonho Park ,  Sungkyu Kim

IPC: H02J7/00 ,  H02J50/40 ,  H02J7/02 ,  H02J50/10

Abstract: A power relay device includes a power receiver configured to wirelessly receive power of a first class when coupled with a wireless power transmission device, a first power converter configured to convert power supplied from the power receiver into a form appropriate for a first mobile terminal, a second power converter configured to receive power from the first power converter and to convert the power into power of a second class, and a power transmitter configured to wirelessly transmit the power of the second class to a second mobile terminal.

公开(公告)号：US11271436B2

公开(公告)日：2022-03-08

申请号：US16627200

申请日：2018-06-28

Applicant: LG Electronics Inc.

Inventor： Sungkyu Kim ,  Jeongkyo Seo ,  Jinmoo Park ,  Seonghun Lee ,  Bongsik Kwak ,  Jaesung Lee ,  Jihyun Lee ,  Gyunghwan Yook ,  Joonho Park ,  Youngchan Cho

IPC: H02J50/80 ,  H02J50/12 ,  H01F38/14 ,  H02J50/40 ,  H02J50/60 ,  H02J7/02 ,  H04B5/00 ,  H02J50/90 ,  H04L27/02

Abstract: A multi-coil based wireless power transmission device is disclosed that includes a primary coil array forming a magnetic coupling with a secondary coil provided in a wireless power reception device to transmit wireless power to the wireless power reception device; a plurality of inverters connected to a plurality of primary coils one-to-one to selectively drive each of the plurality of primary coils; a communication and control unit controlling the plurality of inverters and communication with the wireless power reception device such that at least one primary coil is driven based on the degree of magnetic coupling formed by each primary coil and the secondary coil, thereby determining output, which can be provided by the primary coil array, within a value obtained by summing all the maximum outputs individually set to the respective primary coils.

公开(公告)号：US10805888B2

公开(公告)日：2020-10-13

申请号：US16857895

申请日：2020-04-24

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park ,  Jaeyeol Kim ,  Joonho Park ,  Jeongkyo Seo ,  Gyunghwan Yook ,  Jaesung Lee

IPC: H04W52/28 ,  H04W52/22 ,  H04W52/34

Abstract: A method for performing authentication of a target device in a wireless power transmission system, includes receiving, from the target device, a first packet including indication information related to whether or not the target device supports an authentication function; in case the target device supports the authentication function, transmitting an authentication request message to the target device; and receiving, from the target device, an authentication response message including a certificate related to wireless charging as a response to the authentication request message, wherein a format of the certificate includes a certificate type that informs whether the certificate is one of a plurality of certificates including a root certificate, an intermediate certificate and a final certificate for a wireless power transmitter (PTX).

公开(公告)号：US12261460B2

公开(公告)日：2025-03-25

申请号：US17608626

申请日：2020-05-04

Applicant: LG Electronics Inc.

Inventor： Joonho Park

IPC: H02J50/80 ,  H02J50/10 ,  H04W4/80 ,  H04W76/30

Abstract: The present invention relates to wireless power transmission. A method for controlling a wireless power transmission link for a wireless power transmission device according to an embodiment of the present invention may comprise: a step for performing a first information acquisition procedure for a wireless power reception device; a first determination step for determining whether the distance between the wireless power transmission device and the wireless power reception device is normal on the basis of the information acquired through the first information acquisition procedure; and a step for performing a disconnection procedure for the wireless power transmission link according to the determination result of the first determination step.

公开(公告)号：US12213054B2

公开(公告)日：2025-01-28

申请号：US17594827

申请日：2020-04-29

Applicant: LG ELECTRONICS INC.

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

IPC: H04W48/08 ,  H02J50/10 ,  H02J50/40 ,  H04B5/24 ,  H04B5/79 ,  H04W76/10

Abstract: A wireless power reception device according to an embodiment of the present specification comprises: a power pickup circuit configured to receive wireless power from a wireless power transmission device by magnetic coupling with the wireless power transmission device at an operating frequency, and convert an AC signal generated by the wireless power into a DC signal; and a communication/control circuit for communicating with the wireless power transmission device by using in-band communication using the operation frequency and out-band communication using a frequency other than the operation frequency, wherein the communication/control circuit transmits access information of a Wi-Fi network connected to the wireless power reception device, to the wireless power transmission device by using the out-band communication.

公开(公告)号：US12095289B2

公开(公告)日：2024-09-17

申请号：US17431253

申请日：2019-10-16

Applicant: LG Electronics Inc.

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

IPC: H02J50/80 ,  G08C17/04 ,  H02J50/12

CPC classification number: H02J50/80 ,  G08C17/04 ,  H02J50/12

Abstract: A wireless power receiver may comprise: a power pick-up circuit configured to receive power wirelessly from a wireless power transmitter including a plurality of primary coils by magnetic coupling to the wireless power transmitter at an operating frequency and to convert an alternating current signal induced by the wireless power into a direct current signal; a communication/control circuit receiving the direct current signal supplied from the power pick-up circuit and including an in-band communication module which communicates with the wireless power transmitter by using the operating frequency, and an out-band communication module which communicates with the wireless power transmitter by using any frequency except for the operating frequency; and a load configured to receive the direct current signal supplied from the power pick-up circuit, wherein the communication/control circuit transmits a message informing of the start of power allocation negotiation, to other wireless power receivers by using the out-band communication module.

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.