公开(公告)号：US11527924B2

公开(公告)日：2022-12-13

申请号：US17423844

申请日：2019-11-12

Applicant: LG ELECTRONICS INC.

Inventor： Joonho Park ,  Jinkwon Lim ,  Jingu Choi ,  Yongcheol Park

IPC: H02J50/80 ,  H02J50/10 ,  H02J7/00

Abstract: The present specification relates to a device and method for supporting heterogeneous communication in a wireless power transfer system. The present specification discloses a wireless power reception device comprising: a power pickup circuit configured to receive, from a wireless power transfer device, wireless power generated on the basis of magnetic coupling in a power transfer phase; and a communication and control circuit configured to transmit, to the wireless power transfer device, a first random address packet including a random address of the wireless power reception device or receive, from the wireless power transfer device, a second random address packet including a random address of the wireless power transfer device via in-band communication. By performing a handover using a random address, cross reference can be prevented and security can be enhanced, and thus a BLE connection in a wireless charging system can be more safely performed.

公开(公告)号：US11496004B2

公开(公告)日：2022-11-08

申请号：US17365001

申请日：2021-07-01

Applicant: LG Electronics Inc.

Inventor： Yongcheol Park

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

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：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：US11228205B2

公开(公告)日：2022-01-18

申请号：US16362074

申请日：2019-03-22

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park

IPC: H02J50/10 ,  H02J50/40 ,  H02J50/80 ,  H02J50/90 ,  H02J7/02

Abstract: A wireless power transmitter which performs communication with one or more wireless power receivers, includes a power converter including at least one coil configured to convert current into magnetic field, and a power transmission controller configured to communicate with a wireless power receiver based on a frame, wherein the frame includes a sync pattern and a plurality of slots which have different slot numbers respectively, wherein the sync pattern indicates a first slot as allocated to the wireless power receiver, wherein the power transmission controller receives a first packet from the wireless power receiver in the first slot having a first slot number, and receives a second packet from the wireless power receiver in a second slot having a second slot number, and wherein the second packet includes an information field indicating the first slot number.

公开(公告)号：US11114902B2

公开(公告)日：2021-09-07

申请号：US16406762

申请日：2019-05-08

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park

IPC: H02J50/80 ,  H02J50/10 ,  H04B5/00 ,  H02J50/40 ,  H02J7/02

Abstract: Provided are a device and method for performing authentication in a wireless power transfer system. Provided is an authentication method in a wireless power transfer system including receiving a first packet including indication information on whether a target device supports an authentication function from the target device; transmitting, when the target device supports an authentication function, an authentication request message to the target device; receiving an authentication response message including a certificate on wireless charging from the target device in response to the authentication request message; and confirming authentication of the target device based on the authentication response message.

公开(公告)号：US11063636B2

公开(公告)日：2021-07-13

申请号：US16988367

申请日：2020-08-07

Applicant: LG Electronics Inc.

Inventor： Yongcheol Park ,  Gyunghwan Yook ,  Seonghun Lee

IPC: H04B5/00 ,  H02J50/12 ,  H04W36/30 ,  H02J50/40

Abstract: The present invention relates to a wireless power transmission system and, more particularly, to an apparatus and a method for performing handover between heterogeneous communication methods. A wireless power transmission apparatus and reception apparatus can indicate whether to support out-band communication thereof on the basis of an out-band flag. The wireless power transmission apparatus can request the wireless power reception apparatus to start a handover by using a bit pattern requesting the handover. The handover procedure to out-band may be performed in a negotiation phase or may be performed in a separate handover phase. Information for establishing an out-band communication connection can be transmitted from the wireless power reception apparatus to the wireless power transmission apparatus through in-band communication. Also, even after the handover to the out-band is completed, it is possible to periodically or intermittently perform the in-band communication in a power transmission phase to detect a swap of the wireless power reception apparatus.

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.

公开(公告)号：US10971955B2

公开(公告)日：2021-04-06

申请号：US16915836

申请日：2020-06-29

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.

公开(公告)号：US10892648B2

公开(公告)日：2021-01-12

申请号：US16519447

申请日：2019-07-23

Applicant: LG ELECTRONICS INC.

Inventor： Jihyun Lee ,  Hyunbeom Lee ,  Yongcheol Park ,  Jaesung Lee

IPC: H02J50/12 ,  H02J7/02 ,  H02J50/80 ,  H02J50/10 ,  H02J7/04 ,  H02J50/90 ,  H01F38/14 ,  H02J5/00 ,  H02J7/00 ,  H04B5/00

Abstract: A wireless power transfer method for a wireless power transfer apparatus using full and half-bridge inverter topologies includes detecting whether or not a wireless power receiver is present within a range of power being transferrable in a wireless manner, transmitting a detection signal to the wireless power receiver, receiving at least one of identification information and setting information from the wireless power receiver, receiving a control error packet from the wireless power receiver, and controlling an amount of power to be transferred by using the combination of a driving frequency, a duty cycle or a power signal phase to the full or half-bridge inverter.