公开(公告)号：US20220173625A1

公开(公告)日：2022-06-02

申请号：US17673585

申请日：2022-02-16

Applicant: LG Electronics Inc.

Inventor： Yongcheol PARK

IPC: H02J50/80 ,  H02J50/10 ,  H02J50/60 ,  H04L5/00 ,  H02J7/02

Abstract: A wireless power transmission method executed by a power transmitter comprising multi-coils, according to one embodiment of the present invention, comprises the steps of: detecting a second power receiver while transmitting power to a first power receiver; determining at least one primary coil adequate for power transmission; by using the determined at least one primary coil, determining whether the second power receiver supports a shared mode protocol; and if the second power receiver supports the shared mode protocol, transmitting power to the first and second power receivers according to the shared mode protocol, wherein the shared mode protocol may be a protocol for simultaneously managing information exchanges between the power transmitter and multiple power receivers.

公开(公告)号：US20220158505A1

公开(公告)日：2022-05-19

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 ,  H04B5/00 ,  H02J50/10 ,  H04B1/00

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：US20220158493A1

公开(公告)日：2022-05-19

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 ,  H04B5/00 ,  H02J50/80

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.

公开(公告)号：US20220069631A1

公开(公告)日：2022-03-03

申请号：US17310110

申请日：2019-10-02

Applicant: LG ELECTRONICS INC.

Inventor： Jingu CHOI ,  Jinkwon LIM ,  Taeyoung SONG ,  Yongcheol PARK ,  Joonho PARK

IPC: H02J50/40 ,  H02J50/12 ,  H02J7/02 ,  H02J50/80 ,  H04B5/00

Abstract: The present disclosure relates to a device and method for wireless power transfer to multiple devices using a multi-coil. The device disclosed in the specification comprises: a power pickup unit configured to receive wireless power from a wireless power transfer device having a plurality of primary coils at an operation frequency by magnetic coupling to the wireless power transfer device and convert an alternating current signal generated by the wireless power into a direct current signal; a communication/control unit including an in-band communication module configured to be supplied with the direct current signal from the power pickup unit and perform communication with the wireless power transfer device by using the operating frequency, and an out-band communication module configured to perform communication with the wireless power transfer device by using a frequency other than the operating frequency; and a load configured to be supplied with the direct current signal from the power pickup unit. In a one-to-multiple wireless power transfer system using a multi-coil, various applications of wireless power can be efficiently supported by defining configuration information, control information, management information, and procedures for the exchanges thereof as an out-band communication protocol.

公开(公告)号：US20220029471A1

公开(公告)日：2022-01-27

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

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：US20220014234A1

公开(公告)日：2022-01-13

申请号：US17296186

申请日：2019-08-06

Applicant: LG ELECTRONICS INC.

Inventor： Jingu CHOI ,  Joonho PARK ,  Jinkwon LIM ,  Yongcheol PARK

IPC: H04B5/00 ,  H04W76/10 ,  H02J50/12 ,  H02J50/80 ,  H02J50/40

Abstract: The present invention relates to a device and a method for performing wireless power transfer on the basis of heterogeneous communication. Disclosed in the present specification is a wireless power receiving device comprising: a power pickup unit configured to receive wireless power from a wireless power transfer device by magnetically coupling with the wireless power transfer device at an operating frequency, and convert an alternating current signal generated by the wireless power into a direct current signal; a communication/control unit configured to receive the direct current signal from the power pickup unit, and perform an in-band communication using the operating frequency and/or an out-band communication using a frequency other than the operating frequency; and a load configured to receive the direct current signal from the power pickup unit. Configuration information, control information and management information related to wireless power transfer, and procedures related to the exchange thereof are defined as an out-band communication protocol, and thus various applications of wireless power can be supported.

公开(公告)号：US20210328463A1

公开(公告)日：2021-10-21

申请号：US17365001

申请日：2021-07-01

Applicant: LG Electronics Inc.

Inventor： Yongcheol PARK

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

Abstract: The present invention relates to a device and a method for transmitting or receiving data in a wireless power transmission system. The present specification discloses a wireless power reception device comprising: a power pickup unit configured to receive, from a wireless power transmission device, wireless power generated on the basis of magnetic coupling in a power transmission phase; and a communication/control unit configured to receive, from the wireless power transmission device, information on a first buffer size indicating the size of a first buffer for receiving a data transmission stream. As the buffer size for exchanging the data transmission stream between the wireless power transmission device and reception device becomes clear, wireless power transmission and communication can proceed smoothly.

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：US20210265875A1

公开(公告)日：2021-08-26

申请号：US17313572

申请日：2021-05-06

Applicant: LG Electronics Inc.

Inventor： Yongcheol PARK ,  Gyunghwan YOOK

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

Abstract: A wireless power transmitter including a power conversion unit configured to transmit wireless power generated based on magnetic coupling in a power transfer phase and a control unit configured to receive, from the wireless power receiver operating at a first operating point, a first received power packet of the first operating point and a second received power packet of the first operating point based on the first received power packet of the first operating point and the second received power packet of the first operating point and configured to receive a first received power packet of the second operating point and a second received power packet of the second operating point related to power calibration and construct a second power calibration curve based on the first received power packet of the second operating point and the second received power packet of the second operating point.

公开(公告)号：US20210218287A1

公开(公告)日：2021-07-15

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.