公开(公告)号：US20230352986A1

公开(公告)日：2023-11-02

申请号：US18043859

申请日：2021-09-02

Applicant: LG Electronics Inc.

Inventor： Jinho YOUN ,  Jingu CHOI ,  Minsoo LEE ,  Gyunghwan YOOK ,  Yongcheol PARK

IPC: H02J50/60 ,  H02J50/40 ,  H04B5/00 ,  H02J50/80 ,  H02J50/10

CPC classification number: H02J50/80 ,  H02J50/10 ,  H02J50/40 ,  H02J50/60 ,  H04B5/0037

Abstract: A wireless power reception device according to an embodiment disclosed in the present specification: receives wireless power from a wireless power transmission device; communicates with the wireless power transmission device by using at least one of in-band communication using a power signal of the wireless power or out-band communication using Bluetooth communication; and applies at least one of security modes defined in a generic access profile (GAP) of the Bluetooth communication to at least a portion of data packets to be transmitted using the out-band communication among data packets that are transmittable using the in-band communication, and transmits the at least portion of data packets.

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：US20220029475A1

公开(公告)日：2022-01-27

申请号：US17449884

申请日：2021-10-04

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol PARK ,  Joonho PARK ,  Gyunghwan YOOK

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

Abstract: The present invention relates to an apparatus and a method for performing power calibration in a wireless power transmission system. The present specification provides a wireless power transmission apparatus comprising: a power conversion unit configured to transmit, in a power transfer phase, wireless power generated on the basis of magnetic coupling to a wireless power receiving device; and a communication/control unit configured to perform an initial calibration for a power parameter prior to the power transfer phase, receive a first received power packet from the wireless power receiving device indicating the power received by the wireless power receiving device during the power transfer phase, and detect foreign matter by using the received power and a first power loss determined on the basis of the initial calibration. It is possible to adaptively respond to a newly changed wireless charging environment to calibrate transmission power and reception power, and it is possible to detect foreign matter more precisely by detecting a power loss on the basis of the calibrated transmission and reception power.

公开(公告)号：US20210203193A1

公开(公告)日：2021-07-01

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

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：US20210194295A1

公开(公告)日：2021-06-24

申请号：US17269508

申请日：2019-08-13

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghwan KIM ,  Yongcheol PARK ,  Gyunghwan YOOK

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

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：US20250047144A1

公开(公告)日：2025-02-06

申请号：US18717283

申请日：2022-12-07

Applicant: LG ELECTRONICS INC.

Inventor： Jinho YOUN ,  Gyunghwan YOOK

IPC: H02J50/80 ,  H02J50/12

Abstract: The present disclosure provides: a method by which a wireless power transmitter transmits wireless power to a wireless power receiver in a wireless power transmission system; and a device using same, the method comprising: entering a power transmission phase related to the transmission of the wireless power; receiving, from the wireless power receiver, a first application message in the power transmission phase; and transmitting, to the wireless power receiver, a second application message, which is a response to the first application message in the power transmission phase, wherein the wireless power transmitter initiates the transmission of the second application message within a specific time period, and the start point of the specific time period is the end point of the first application message.

公开(公告)号：US20240322611A1

公开(公告)日：2024-09-26

申请号：US18578956

申请日：2022-07-11

Applicant: LG Electronics Inc.

Inventor： Jinho YOUN ,  Gyunghwan YOOK

IPC: H02J50/80 ,  H02J50/12

CPC classification number: H02J50/80 ,  H02J50/12

Abstract: The present disclosure provides a method, performed by a wireless power receiver, for receiving wireless power in a wireless power transmission system, and an apparatus using the method, the method comprising: transmitting, to a wireless power transmitter, information related to a coupling coefficient between the wireless power transmitter and the wireless power receiver; transmitting information related to a power profile of the wireless power receiver to the wireless power transmitter, wherein the information related to the power profile indicates that the wireless power receiver supports a low-coupling power profile; and receiving the wireless power from the wireless power transmitter on the basis of a response to the information related to the power profile, wherein the low-coupling power profile is a power profile used on the basis of the coupling coefficient between the wireless power receiver and the wireless power transmitter being low.

公开(公告)号：US20240178703A1

公开(公告)日：2024-05-30

申请号：US18283720

申请日：2022-03-22

Applicant: LG Electronics Inc.

Inventor： Jinho YOUN ,  Taewook KWON ,  Gyunghwan YOOK ,  Yongcheol PARK

IPC: H02J50/40 ,  H02J50/12 ,  H02J50/80 ,  H04B5/79

CPC classification number: H02J50/40 ,  H02J50/12 ,  H02J50/80 ,  H04B5/79

Abstract: The present specification provides a method for performing wireless power reception by a wireless power receiver in a wireless power transmission system, and a device using the method, the method comprising: transmitting information related to a power transfer contract to a wireless power transmitter; generating the power transfer contract with the wireless power transmitter on the basis of the information; and receiving the wireless power from the wireless power transmitter on the basis of the power transfer contract, wherein the wireless power receiver transmits the information to the wireless power transmitter on the basis of an amplitude shift keying (ASK) signal, and the ASK signal is generated on the basis of an input signal based on pulse width modulation (PWM).

公开(公告)号：US20240055904A1

公开(公告)日：2024-02-15

申请号：US18280375

申请日：2022-03-03

Applicant: LG Electronics Inc.

Inventor： Minsoo LEE ,  Gyunghwan YOOK ,  Jinho YOUN ,  Taewook KWON ,  Yongcheol PARK

IPC: H02J50/40 ,  H02J50/80

CPC classification number: H02J50/40 ,  H02J50/80 ,  H02J7/00034

Abstract: Provided are: a method for establishing out-band communication performed by a wireless power transmitter in a wireless power transmission system; and a device for using same. The method comprises the steps of: transmitting a plurality of pieces of capability information to a plurality of wireless power receivers respectively through in-band communication, wherein each of the plurality of pieces of capability information includes information about whether the wireless power transmitter supports the out-band communication; establishing the out-band communication with the plurality of wireless power transmitters on the basis of the transmission of the plurality of pieces of capability information; and exchanging power control information pertaining to the plurality of wireless power receivers with the plurality of wireless power receivers through the out-band communication.

公开(公告)号：US20230344281A1

公开(公告)日：2023-10-26

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 ,  H02J50/60 ,  H02J50/40 ,  H02J50/12

CPC classification number: H02J50/80 ,  H02J50/60 ,  H02J50/402 ,  H02J50/12

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.