公开(公告)号：US20210351627A1

公开(公告)日：2021-11-11

申请号：US17282654

申请日：2019-10-04

Applicant: LG ELECTRONICS INC.

Inventor： Joonho PARK ,  Bongsik KWAK ,  Sungkyu KIM ,  Seonghun LEE ,  Jihyun LEE

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

Abstract: The present disclosure relates to a wireless power transmission device. A wireless power transmission device according to an embodiment of the present disclosure includes: a coil part including a plurality of partially overlapping coils; a coil combination generator configured to generate coil combinations including at least one of the plurality of coils; and a controller configured to transmit a coil selection signal through the coil combinations and to select an operating coil combination from the coil combinations based on a response intensity of a response signal for the coil selection signal and charging efficiency of a wireless power reception device. Accordingly, a high-efficiency charging area can be extended in partially overlapping multiple coils.

公开(公告)号：US20210028653A1

公开(公告)日：2021-01-28

申请号：US17044600

申请日：2019-04-02

Applicant: LG Electronics Inc.

Inventor： Joonho PARK ,  Bongsik KWAK ,  Sungkyu KIM ,  Jihyun LEE

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

Abstract: The present disclosure relates to a device and method for controlling transmission of power in a wireless power transmitting system. The present specification discloses a wireless power transmitting method comprising the steps of: performing a digital ping on each of a plurality of coil combinations formed from a plurality of primary coils; receiving a signal intensity packet of each of the coil combinations from the wireless power receiving device; and forming the magnetic coupling by operating a coil combination selected on the basis of the signal intensity packet, and transmitting wireless power to the wireless power receiving device on the basis of the magnetic coupling. Therefore, an optimal multi-coil can be rapidly selected according to the location of the wireless power receiving device.

公开(公告)号：US20200252886A1

公开(公告)日：2020-08-06

申请号：US16857895

申请日：2020-04-24

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol PARK ,  Jaeyeol KIM ,  Joonho PARK ,  Jeongkyo SEO ,  Gyunghwan YOOK ,  Jaesung LEE

IPC: H04W52/28 ,  H04W52/34 ,  H04W52/22

Abstract: A method for performing authentication of a target device in a wireless power transmission system, includes receiving, from the target device, a first packet including indication information related to whether or not the target device supports an authentication function; in case the target device supports the authentication function, transmitting an authentication request message to the target device; and receiving, from the target device, an authentication response message including a certificate related to wireless charging as a response to the authentication request message, wherein a format of the certificate includes a certificate type that informs whether the certificate is one of a plurality of certificates including a root certificate, an intermediate certificate and a final certificate for a wireless power transmitter (PTX).

公开(公告)号：US20200244108A1

公开(公告)日：2020-07-30

申请号：US16627200

申请日：2018-06-28

Applicant: LG Electronics Inc.

Inventor： Sungkyu KIM ,  Jeongkyo SEO ,  Jinmoo PARK ,  Seonghun LEE ,  Bongsik KWAK ,  Jaesung LEE ,  Jihyun LEE ,  Gyunghwan YOOK ,  Joonho PARK ,  Youngchan CHO

IPC: H02J50/40 ,  H02J50/12 ,  H02J50/80 ,  H01F38/14 ,  H02J7/02 ,  H02J50/60 ,  H02J50/90 ,  H04B5/00

Abstract: The present invention relates to a multi-coil based wireless power transmission device and method. Disclosed in the present specification is a wireless power transmission device comprising: a primary coil array forming a magnetic coupling with a secondary coil, which is provided in a wireless power reception device, so as to transmit wireless power to the wireless power reception device; a plurality of inverters connected to a plurality of primary coils one-to-one so as to selectively drive each of the plurality of primary coils; a communication and control unit, which controls the plurality of inverters and communication with the wireless power reception device such that at least one primary coil is driven on the basis of the degree of magnetic coupling formed by each primary coil and the secondary coil, thereby determining output, which can be provided by the primary coil array, within a value obtained by summing all the maximum outputs individually set to the respective primary coils. In an intermediate power level wireless power transmission system, a non-chargeable state due to coil misalignment can be compensated for on the basis of multi-coils, an extended design of a charging area at low cost is simple, and the degree of freedom of the position or the alignment of a reception device can be increased.

公开(公告)号：US20240322613A1

公开(公告)日：2024-09-26

申请号：US18677490

申请日：2024-05-29

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol PARK ,  Joonho PARK ,  Gyunghwan YOOK

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

CPC classification number: 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：US20220346032A1

公开(公告)日：2022-10-27

申请号：US17853137

申请日：2022-06-29

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol PARK ,  Jaeyeol KIM ,  Joonho PARK ,  Jeongkyo SEO ,  Gyunghwan YOOK ,  Jaesung LEE

IPC: H04W52/28 ,  H04W52/22 ,  H04W52/34 ,  H02J50/80 ,  H02J7/00 ,  G06F21/44

Abstract: A wireless power receiver includes a power pickup configured to receive a wireless power from a wireless power transmitter, and a communicator/controller configured to control the wireless power. The wireless power receiver transmits, to the wireless power transmitter during a configuration phase, a configuration packet including an AI flag related to whether the wireless power receiver supports an authentication function, receives, from the wireless power transmitter during a negotiation phase, a capability packet including an AR flag and a potential power value of the wireless power transmitter, wherein the AR flag is related to whether the wireless power transmitter supports the authentication function, and performs a power transfer phase with the wireless power transmitter. The wireless power receiver transmits, to the wireless power transmitter during the power transfer phase, an authentication request message, and receives, from the wireless power transmitter during the power transfer phase, an authentication response message.

公开(公告)号：US20220216737A1

公开(公告)日：2022-07-07

申请号：US17608626

申请日：2020-05-04

Applicant: LG Electronics Inc.

Inventor： Joonho PARK

IPC: H02J50/80 ,  H02J50/10 ,  H04W76/30 ,  H04W4/80

Abstract: The present invention relates to wireless power transmission. A method for controlling a wireless power transmission link for a wireless power transmission device according to an embodiment of the present invention may comprise: a step for performing a first information acquisition procedure for a wireless power reception device; a first determination step for determining whether the distance between the wireless power transmission device and the wireless power reception device is normal on the basis of the information acquired through the first information acquisition procedure; and a step for performing a disconnection procedure for the wireless power transmission link according to the determination result of the first determination step.

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：US20220158504A1

公开(公告)日：2022-05-19

申请号：US17593399

申请日：2020-03-23

Applicant: LG ELECTRONICS INC.

Inventor： Joonho PARK ,  Jinkwon LIM ,  Jingu CHOI

IPC: H02J50/80 ,  H02J50/12 ,  H02J50/20 ,  H04B5/00

Abstract: The present specification relates to a device and method capable of in-band communication and out-band communication between a wireless power transmitting device and a wireless power receiving device. The present specification provides a wireless power transmitting device, a wireless power transmitting method, a wireless power receiving device, a wireless power receiving method, and a wireless charging system capable of preventing cross connection when connecting out-band communication by exchanging necessary information by using in-band communication.

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.