公开(公告)号：US12046927B2

公开(公告)日：2024-07-23

申请号：US17908463

申请日：2021-03-04

Applicant: LG ELECTRONICS INC.

Inventor： Jingu Choi ,  Minsoo Lee ,  Hongwon Lee ,  Jinkwon Lim ,  Jaehyu Kim ,  Yongcheol Park

IPC: H02J50/80 ,  H02J50/12 ,  H02J50/40 ,  H04L27/12

CPC classification number: H02J50/80 ,  H02J50/12 ,  H02J50/40 ,  H04L27/12

Abstract: A device for transmission of wireless power according to an embodiment of the present specification comprises: a power conversion circuit for transmitting the wireless power to a wireless power receiving device; and a communication/control circuit for communicating with the wireless power receiving device and controlling the wireless power, wherein the communication/control circuit transmits a response to a reception data packet received from the wireless power receiving device or a transmission data packet transmitted to the wireless power receiving device on the basis of a timeout period, and the timeout period is changed according to a communication speed between the communication/control circuit and the wireless power receiving device.

公开(公告)号：US11979032B2

公开(公告)日：2024-05-07

申请号：US17597500

申请日：2020-05-15

Applicant: LG ELECTRONICS INC.

Inventor： Jingu Choi ,  Jinkwon Lim ,  Minsoo Lee ,  Joonho Park ,  Jaehyu Kim ,  Yongcheol Park

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

CPC classification number: H02J50/40 ,  H02J50/12 ,  H02J50/80 ,  H02J50/90

Abstract: A wireless power transmission device according to an embodiment of the present specification comprises: a power conversion circuit for transmitting wireless power to a wireless power reception device by means of magnetic coupling with the wireless power reception device at an operating frequency; and a communication/control circuit for communicating with the wireless power reception device by using in-band communication that uses the operating frequency and/or out-band communication that uses a frequency other than the operating frequency, and for communicating with at least one other wireless power transmission device by using the out-band communication, wherein the communication/control circuit measures the distance to the wireless power reception device and transmits the information about the measured first distance to the other wireless power transmission device.