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

IPC: H02J50/80 ,  H02J50/12 ,  H02J50/40 ,  H02J50/60

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.

公开(公告)号：US11563343B2

公开(公告)日：2023-01-24

申请号：US17735744

申请日：2022-05-03

Applicant: LG ELECTRONICS INC.

Inventor： Jinho Youn ,  Taewook Kwon ,  Jaeyeol Kim ,  Hyoungseok Kim ,  Dohyeon Son

IPC: H02J50/80 ,  H02J50/40 ,  G06F11/00

Abstract: The present disclosure relates to a method and a device for transmitting data in a wireless power transmission system. The method for transmitting data by a wireless power transmitter in a wireless power transmission system may comprise the steps of: receiving from a wireless power receiver, within a first control error interval, a first control error packet containing a control error value with respect to power transmitted from the wireless power transmitter; determining the size of a first data packet on the basis of the length of the first control error interval; and transmitting the first data packet to the wireless power receiver.

公开(公告)号：US10923939B2

公开(公告)日：2021-02-16

申请号：US16325540

申请日：2016-12-16

Applicant: LG ELECTRONICS INC.

Inventor： Hyoungseok Kim ,  Jeongkyo Seo ,  Jinmoo Park ,  Beomseok Chae

IPC: H02J7/02 ,  H04B5/00 ,  H02J50/90 ,  H02J50/80 ,  H01F27/38 ,  H02J50/10 ,  H01F38/14 ,  H02J50/40 ,  H02J50/12

Abstract: According to one embodiment of the present invention, a wireless power transmitter for transferring power to a wireless power receiver, the wireless power transmitter includes a coil assembly including a plurality of coils, a power conversion unit configured to convert an input direct current (DC) into an alternating current (AC) for driving the coil assembly, and a communication/control unit configured to communicate with the wireless power receiver and control an amount of power to be transferred to the wireless power receiver using the coil assembly, wherein the plurality of coils are arranged in first and second directions, wherein each of the plurality of coils has a substantially rectangular frame structure having a through hole at a center, and is arranged so that at least portion of the each coil overlaps, in a plane, with a neighboring coil in the first and second directions.

公开(公告)号：US12218524B2

公开(公告)日：2025-02-04

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

IPC: H02J50/60 ,  H02J50/10 ,  H02J50/80

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.

公开(公告)号：US11764623B2

公开(公告)日：2023-09-19

申请号：US18153091

申请日：2023-01-11

Applicant: LG ELECTRONICS INC.

Inventor： Jinho Youn ,  Taewook Kwon ,  Jaeyeol Kim ,  Hyoungseok Kim ,  Dohyeon Son

IPC: H02J50/80 ,  H02J50/40 ,  G06F11/00

CPC classification number: H02J50/80 ,  G06F11/004 ,  H02J50/40

Abstract: The present disclosure relates to a method and a device for transmitting data in a wireless power transmission system. The method for transmitting data by a wireless power transmitter in a wireless power transmission system may comprise the steps of: receiving from a wireless power receiver, within a first control error interval, a first control error packet containing a control error value with respect to power transmitted from the wireless power transmitter; determining the size of a first data packet on the basis of the length of the first control error interval; and transmitting the first data packet to the wireless power receiver.

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：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

IPC: H02J50/60 ,  H02J50/12 ,  H02J50/80 ,  H02J50/20

CPC classification number: H02J50/60 ,  H02J50/12 ,  H02J50/20 ,  H02J50/80

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).

公开(公告)号：US11355971B2

公开(公告)日：2022-06-07

申请号：US17280503

申请日：2019-07-11

Applicant: LG ELECTRONICS INC.

Inventor： Jinho Youn ,  Taewook Kwon ,  Jaeyeol Kim ,  Hyoungseok Kim ,  Dohyeon Son

IPC: H02J50/80 ,  H02J50/40 ,  G06F11/00

Abstract: The present disclosure relates to a method and a device for transmitting data in a wireless power transmission system. The method for transmitting data by a wireless power transmitter in a wireless power transmission system may comprise the steps of: receiving from a wireless power receiver, within a first control error interval, a first control error packet containing a control error value with respect to power transmitted from the wireless power transmitter; determining the size of a first data packet on the basis of the length of the first control error interval; and transmitting the first data packet to the wireless power receiver.

公开(公告)号：US09873221B2

公开(公告)日：2018-01-23

申请号：US14826008

申请日：2015-08-13

Applicant: LG ELECTRONICS INC.

Inventor： Hyoungseok Kim ,  Kyujin Choi

IPC: B29C35/08 ,  B29C41/02 ,  B29C47/92 ,  B29C67/00 ,  B29C47/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B29C47/92 ,  B29C47/0014 ,  B29C64/106 ,  B29C64/20 ,  B29C64/386 ,  B33Y30/00 ,  B33Y50/02

Abstract: A 3-dimensional (3D) printer is disclosed. The 3D printer includes an extruder to extrude a filament into a cavity, a carriage to support the extruder, a moving unit to move the carriage, and a processor to control the extruder and the moving unit. The extruder includes a filament feeder to downwardly feed the filament, a heating unit to heat the filament fed by the filament feeder, a nozzle to output the heated filament into the cavity, a cooling unit to cool the filament feeder, to decrease heat transferred from the heating unit to the filament feeder, a first temperature sensor to sense a temperature of the heating unit, and a second temperature sensor to sense a temperature of the cooling unit. The processor controls the heating unit and the cooling unit, based on the first temperature sensor and the second temperature sensor, to enhance output speed of the filament.