公开(公告)号：US20210184514A1

公开(公告)日：2021-06-17

申请号：US17188439

申请日：2021-03-01

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol PARK

IPC: H02J50/80 ,  H02J50/10

Abstract: A wireless power transmitter includes a power conversion unit configured to transfer wireless power to a wireless power receiver by forming magnetic coupling with the wireless power receiver; and a communication/control unit configured to communicate with the wireless power receiver to control transmission of the wireless power and to perform transmission or reception of data, wherein the communication/control unit is further configured to receive, from the wireless power receiver, a received power packet (RPP) which informs a value of the wireless power received by the wireless power receiver, transmit a bit pattern to the wireless power receiver in response to the RPP, the bit pattern requesting attention from the wireless power receiver the wireless power transmitter, receive, from the wireless power receiver, a response packet to poll the reason of the attention, and transmit, to the wireless power receiver, a capability packet including information for a new target power level.

公开(公告)号：US20210066973A1

公开(公告)日：2021-03-04

申请号：US16961554

申请日：2019-01-08

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：US20200382167A1

公开(公告)日：2020-12-03

申请号：US16995558

申请日：2020-08-17

Applicant: LG Electronics Inc.

Inventor： Yongcheol PARK

IPC: H04B5/00 ,  H02J50/80 ,  H02J50/12 ,  H02J50/40 ,  H02J7/02 ,  H04L5/14

Abstract: The present application describes a wireless power reception device comprising: a power pickup circuit configured to receive, from a wireless power transmission device, a wireless power generated on the basis of magnetic coupling in a power transmission phase; and a communication and control circuit configured to transmit, to the wireless power transmission device, a configuration packet including first dual data stream information, or to receive, from the wireless power transmission device, a capability packet including second dual data stream information. Upper layer data can be effectively exchanged by clearly recognizing whether the upper layer data is bidirectionally transmitted between the wireless power transmission device and the wireless power reception device, and accuracy of power loss and saving of processing resources can be achieved by synchronizing the timing of calculating the power loss between the wireless power transmission device and the wireless power reception device.

公开(公告)号：US20200373792A1

公开(公告)日：2020-11-26

申请号：US16992862

申请日：2020-08-13

Applicant: LG Electronics Inc.

Inventor： Yongcheol PARK

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

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：US20200328631A1

公开(公告)日：2020-10-15

申请号：US16905218

申请日：2020-06-18

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol PARK

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

Abstract: A wireless power transmitter includes a power conversion unit configured to transfer wireless power to a wireless power receiver by using magnetic coupling between the wireless power transmitter and the wireless power receiver; and a communication/control unit configured to control the wireless power and to perform transmission or reception of data based on communication with the wireless power receiver, wherein the communication/control unit receives from the wireless power receiver a received power packet (RPP) informing a value of power received by the wireless power receiver, transmits a bit pattern, in response to the RPP, requesting for transmitting at least one data packet from the wireless power transmitter to the wireless power receiver, receives a response packet from the wireless power receiver in response to the bit pattern, and transmits the at least one data packet to the wireless power receiver.

公开(公告)号：US20200274401A1

公开(公告)日：2020-08-27

申请号：US15930922

申请日：2020-05-13

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol PARK

IPC: H02J50/80 ,  H02J7/00 ,  H02J50/90 ,  H02J50/12 ,  H02J50/40

Abstract: A wireless power transmitter includes a power conversion unit configured to transfer wireless power to a wireless power receiver by forming magnetic coupling with the wireless power receiver; and a communication/control unit configured to communicate with the wireless power receiver to control transmission of the wireless power and to perform transmission or reception of data, wherein the communication/control unit is configured to: receive, from the wireless power receiver after a configuration phase, a received power packet (RPP) which indicates a value of the wireless power received by the wireless power receiver; transmit, to the wireless power receiver, a bit pattern which requests communication initiated by the wireless power transmitter in response to the RPP when the communication/control unit has data to be sent to the wireless power receiver; and receive a packet for polling the data to be sent from the wireless power receiver in response to the bit pattern.

公开(公告)号：US20190326786A1

公开(公告)日：2019-10-24

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 ,  H02J50/12 ,  H04B5/00

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：US20190305826A1

公开(公告)日：2019-10-03

申请号：US16315894

申请日：2017-09-13

Applicant: LG Electronics Inc.

Inventor： Yongcheol PARK

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

Abstract: According to an embodiment of the present invention, a method for transferring wireless power by an electric power transmitter may comprise: a selection step of monitoring a placement or a removal of an object on or from an interface surface of the power transmitter; a ping step of performing a digital ping and receiving a response from a power receiver; an identifying/configuring step of receiving a configuration packet including configuration information of the power receiver; and a negotiating step of transmitting a capability packet including information on a level of power transferred by the power transmitter, wherein the capability packet may include an NFC detection field indicating whether the power transmitter has a capability of detecting an RFID and/or an NFC, and/or whether the RDID and/or the NFC is detected.

公开(公告)号：US20190296591A1

公开(公告)日：2019-09-26

申请号：US16422610

申请日：2019-05-24

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol PARK

IPC: H02J50/80 ,  H02J50/10

Abstract: The present invention is related to an apparatus and method for performing communication in a wireless power transfer system. The description discloses a wireless power transmitter including a communication/control unit configured to perform a negotiation for a first available power indicator with a wireless power reception apparatus; and a power conversion unit configured to transmit a wireless power to the wireless power reception apparatus by generating magnetic coupling in a primary coil according to the first available power indicator. The wireless power transmitter provides an effect that a wireless power transmission apparatus is available to obtain status and authority as a master/transmitter depending on a situation, and current ambient situation/environment is reflected in real time.

公开(公告)号：US20190267848A1

公开(公告)日：2019-08-29

申请号：US16411963

申请日：2019-05-14

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol PARK

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

Abstract: A method in which a power transmitter comprising multi coils transmits wireless power, includes detecting a second power receiver while transmitting power to a first power receiver, determining at least one primary coil appropriate for power transmission, determining whether the second power receiver supports a shared mode protocol using the determined at least one primary coil, and transmitting, if the second power receiver supports a shared mode protocol, power to the first and second power receivers according to the shared mode protocol, wherein the shared mode protocol is a protocol that simultaneously manages information exchange between the power transmitter and a plurality of power receivers.