公开(公告)号：US10343490B2

公开(公告)日：2019-07-09

申请号：US15425658

申请日：2017-02-06

Applicant: LG ELECTRONICS INC.

Inventor： Bumsuk Kim ,  Kyunghwan Kim ,  Namsik Yim ,  Joohyung Kim ,  Junggu Lee ,  Junyoung Lim

IPC: B60H1/32 ,  B60H1/00 ,  F04B49/03 ,  F04D27/02 ,  F25B49/00

Abstract: A safety device for a vehicle can include an impulse sensor configured to sense an impact to the vehicle and generate an impulse signal based on the impact, a compressor configured to compress refrigerant for a refrigeration cycle of the vehicle, and a safety valve connected to the compressor and configured to receive the impulse signal from the impulse sensor, and in response to the impulse signal exceeding a predetermined value, open the safety valve to place an inner space of the compressor in communication with an outside of the compressor for discharging the refrigerant outside the vehicle.

公开(公告)号：US12126187B2

公开(公告)日：2024-10-22

申请号：US18229819

申请日：2023-08-03

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park ,  Kyunghwan Kim

IPC: H02J50/60 ,  H02J50/10 ,  H02J50/40 ,  H02J50/80

CPC classification number: H02J50/60 ,  H02J50/10 ,  H02J50/80 ,  H02J50/40

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.

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：US11296559B2

公开(公告)日：2022-04-05

申请号：US17217170

申请日：2021-03-30

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghwan Kim ,  Yongcheol Park ,  Jihyun Lee ,  Gyunghwan Yook

IPC: H02J50/60 ,  H02J50/80 ,  H04B5/00 ,  H02J50/12

Abstract: Provided are an apparatus and method for performing foreign object detection in a wireless power transfer system. The present specification discloses a method comprising receiving a digital ping from the wireless power transmitter; transmitting an identification and configuration packets to the wireless power transmitter; transmitting a foreign object detection (FOD) state packet which indicates a reference Q factor of the wireless power receiver to the wireless power transmitter; and receiving wireless power through magnetic coupling from the wireless power transmitter based on the foreign object detection result of the wireless power transmitter using the reference Q factor. Irrespective of individual characteristics of a wireless power receiver, accuracy and reliability of detecting a foreign object may be improved.

公开(公告)号：US11757310B2

公开(公告)日：2023-09-12

申请号：US17497266

申请日：2021-10-08

Applicant: LG Electronics Inc.

Inventor： Yongcheol Park ,  Kyunghwan Kim

IPC: H02J50/60 ,  H02J50/80 ,  H02J50/10 ,  H02J50/40

CPC classification number: H02J50/60 ,  H02J50/10 ,  H02J50/80 ,  H02J50/40

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.

公开(公告)号：US11437864B2

公开(公告)日：2022-09-06

申请号：US17268407

申请日：2019-08-06

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghwan Kim ,  Gyunghwan Yook ,  Yongcheol Park ,  Jinmoo Park

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

Abstract: Disclosed in the present specification is a wireless power reception device comprising: a power pickup unit for receiving wireless power from a wireless power transmission device by means of magnetic coupling with the wireless power transmission device and transforming, into a direct current signal, an alternating current signal generated by wireless power; a communication/control unit for receiving the direct current signal from the power pickup unit, transmitting, to the wireless power transmission device, a first power transmission suspension packet for temporarily suspending transmission of the wireless power in order to detect a foreign object, and performing a foreign object detection procedure within a predetermined time window when the transmission of the wireless power is temporarily suspended; and a load for receiving the direct current signal from the power pickup unit.

公开(公告)号：US11251659B2

公开(公告)日：2022-02-15

申请号：US17269508

申请日：2019-08-13

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghwan Kim ,  Yongcheol Park ,  Gyunghwan Yook

IPC: H02J50/60 ,  H02J50/80 ,  H02J50/40 ,  H02J7/02

Abstract: The present specification discloses a method for receiving wireless power from a wireless power transmission device on the basis of foreign object detection, the method comprising the steps of: receiving a digital ping from the wireless power transmission device; transmitting identification and configuration packets to the wireless power transmission device; transmitting a foreign substance detection state packet indicating a reference Q factor value of a wireless power reception device to the wireless power transmission device; and receiving wireless power through magnetic coupling from the wireless power transmission device, on the basis of a result of foreign substance detection using the reference Q factor value by the wireless power transmission device.

公开(公告)号：US11179996B2

公开(公告)日：2021-11-23

申请号：US16796374

申请日：2020-02-20

Applicant: LG ELECTRONICS INC.

Inventor： Jooseong Lee ,  Inho Choi ,  Kyunghwan Kim

IPC: B60H1/00 ,  F16K11/074 ,  F16K31/04

Abstract: Disclosed is a four-way valve including a housing having a refrigerant filling chamber formed therein, a high pressure pipe hole formed on a bottom surface of the housing and coupled to a high pressure pipe through which refrigerant discharged from the compressor flows, a first pipe hole formed on an upper surface of the housing and coupled to a first pipe extending to a first heat exchanger, a second pipe hole formed on the upper surface of the housing and coupled to a second pipe extending to a second heat exchanger, a low pressure pipe hole formed on the upper surface of the housing and configured to allow the refrigerant to be collected to the compressor, and a switching guide configured to rotate to allow the low pressure pipe hole to selectively communicate with the first pipe hole or the second pipe hole.

公开(公告)号：US11168430B2

公开(公告)日：2021-11-09

申请号：US16626096

申请日：2018-06-21

Applicant: LG ELECTRONICS INC.

Inventor： Sooyong Park ,  Kyunghwan Kim ,  Hwanyong Kim ,  Seonghun Lee ,  Byungsang Jung

IPC: D06F34/08 ,  D06F37/30 ,  D06F37/04 ,  D06F37/26

Abstract: Disclosed is a washing machine comprising: a tub which accommodates washing water; a drum which is disposed inside the tub, accommodates cloth, and is rotatable; a transmission coil which is disposed in the tub and supplies power wirelessly; a reception coil which is disposed in the drum and receives the power transmitted from the transmission coil; and a washing force reinforcing unit which is disposed in the drum, operated by the power delivered from the reception coil, and provides washing force to the cloth.

公开(公告)号：US11050300B2

公开(公告)日：2021-06-29

申请号：US16375823

申请日：2019-04-04

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghwan Kim ,  Yongcheol Park ,  Jihyun Lee ,  Gyunghwan Yook

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

Abstract: Provided are an apparatus and method for performing foreign object detection in a wireless power transfer system. The present specification discloses a method comprising receiving a digital ping from the wireless power transmitter; transmitting an identification and configuration packets to the wireless power transmitter; transmitting a foreign object detection (FOD) state packet which indicates a reference Q factor of the wireless power receiver to the wireless power transmitter; and receiving wireless power through magnetic coupling from the wireless power transmitter based on the foreign object detection result of the wireless power transmitter using the reference Q factor. Irrespective of individual characteristics of a wireless power receiver, accuracy and reliability of detecting a foreign object may be improved.