公开(公告)号：US20220263352A1

公开(公告)日：2022-08-18

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：US20180056589A1

公开(公告)日：2018-03-01

申请号：US15557915

申请日：2015-06-03

Applicant: LG ELECTRONICS INC.

Inventor： Hyoungseok KIM ,  Kyujin CHOI

IPC: B29C64/393 ,  B29C64/277 ,  B29C64/129 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B29C64/393 ,  B29C64/129 ,  B29C64/277 ,  B33Y30/00 ,  B33Y50/02

Abstract: Provided is a 3D printer. The 3D printer includes a material casing accommodating a modeling material for modeling a 3D model, a light source unit supplying light onto the modeling material to cure the modeling material, a stage on which the modeling material cured by the light source unit is seated, the stage being disposed movable into the material casing, a stage driving unit connected to the stage to provide a driving force for moving the stage, and a control unit controlling operations of the light source unit and the stage driving unit. The light source unit is provided as an LED assembly for surface-illustrating light onto the modeling material.

公开(公告)号：US20230283119A1

公开(公告)日：2023-09-07

申请号：US18016585

申请日：2020-07-17

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghwan KIM ,  Seonghun LEE ,  Taewook KWON ,  Hyoungseok KIM ,  Hongkwon KIM

IPC: H02J50/70 ,  H02J50/12 ,  H01F27/36

CPC classification number: H02J50/70 ,  H02J50/12 ,  H01F27/36

Abstract: A wireless power transmission apparatus includes a shielding plate, a transmission coil on the shielding plate, and a shielding member disposed on the shielding plate and configured to surround the transmission coil. The shielding plate may shield a magnetic field formed to a lower side of the transmission coil. The shield member can offset the magnetic field formed on the side of the transmission coil. Thus, the embodiment can minimize EMI or EMF caused by the magnetic field formed on the lower side and the side of the transmission coil.

公开(公告)号：US20250125663A1

公开(公告)日：2025-04-17

申请号：US18987421

申请日：2024-12-19

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：US20240372400A1

公开(公告)日：2024-11-07

申请号：US18280442

申请日：2022-03-07

Applicant: LG Electronics Inc.

Inventor： Kyunghwan KIM ,  Seonghun LEE ,  Hyoungseok KIM ,  Euisuk CHOI

IPC: H02J50/00 ,  H01F27/28 ,  H01F38/14 ,  H02J50/10 ,  H02J50/40 ,  H02J50/70

Abstract: A wireless power transfer device transmits wireless power to a wireless power reception device and comprises primary coils, transmitting wireless power by magnetically coupling to secondary coils of the wireless power reception device, and a shield protecting the wireless power transfer device from a magnetic field from at least one of the primary coils. The primary coils comprise: a first bottom coil and a second bottom coil not overlapping each other on a first plane; and a first top coil and a second top coil not overlapping each other on a second plane located above the first plane, wherein one side of the first top coil is located above the first bottom coil, the other side of the first top coil is located above the second bottom coil, and one side of the second top coil is located above the second bottom coil.

公开(公告)号：US20220247230A1

公开(公告)日：2022-08-04

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 ,  H02J50/20 ,  H02J50/80 ,  H02J50/12

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：US20230163641A1

公开(公告)日：2023-05-25

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 ,  H02J50/40 ,  G06F11/004

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：US20210344235A1

公开(公告)日：2021-11-04

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：US20210320745A1

公开(公告)日：2021-10-14

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 ,  H04L1/20 ,  H02J7/02 ,  H02J50/12 ,  H02J50/80

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：US20190207411A1

公开(公告)日：2019-07-04

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 ,  H02J50/10 ,  H02J50/80 ,  H01F38/14 ,  H02J50/90

CPC classification number: H02J7/025 ,  H01F38/14 ,  H02J7/02 ,  H02J50/10 ,  H02J50/80 ,  H02J50/90

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.