公开(公告)号：US20210194296A1

公开(公告)日：2021-06-24

申请号：US16076079

申请日：2017-02-02

Applicant: LG INNOTEK CO., LTD.

Inventor： Min Young JO ,  Jong Heon LEE ,  Yong Suk CHAE

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

Abstract: The present invention relates to a wireless charging method and apparatus and system therefor. A wireless power transmission apparatus for wirelessly transmitting power to a wireless power receiving apparatus according to one embodiment of the present invention comprises: a power transmission unit for sending a power signal through a transmission coil; a power conversion unit for converting an intensity of the power applied from the outside and transferring the converted power to the power transmission unit; a communication unit for receiving a packet from the wireless power receiving apparatus; and a control unit for controlling power on the basis of a control error value received through the communication unit, wherein, when an unexpected packet is received in a power transmission stage, the control unit may control power by applying a predetermined offset to the control error value. Thus, the present invention has an advantage of being able to minimize the interruption of wireless charging.

公开(公告)号：US20180351406A1

公开(公告)日：2018-12-06

申请号：US15780979

申请日：2016-09-08

Applicant: LG INNOTEK CO., LTD.

Inventor： Yun Bok LEE ,  Min Young JO ,  Hyung Jun LIM

IPC: H02J50/12 ,  H02J50/40 ,  H02J50/80 ,  H02J50/60 ,  H02J7/00 ,  H02J7/02

CPC classification number: H02J7/02 ,  H02J7/04

Abstract: A wireless power transmitter according to an embodiment comprises: a power conversion unit for converting the strength of supplied power and outputs the same as a power signal; a transmission control unit for inspecting whether a wireless power receiver proceeds with charging in a no-load state without completing the charging, and according to the result of inspection, temporarily stopping the supply of the power signal to the wireless power receiver and resuming the supply; and a transmission coil end which has at least one transmission coil for transmitting the power signal to the wireless power receiver.

公开(公告)号：US20190356175A1

公开(公告)日：2019-11-21

申请号：US16077184

申请日：2017-02-02

Applicant: LG INNOTEK CO., LTD.

Inventor： Min Young JO ,  Jong Heon LEE ,  Yong Suk CHAE

IPC: H02J50/40 ,  H02J50/90 ,  H02J50/10

Abstract: A wireless power transmitter having a plurality of transmission coils is disclosed. The present transmitter comprises: first to Nth coils; and a control unit for transmitting, to a wireless power receiver, a first sensing signal through the first to Nth coils, and adjusting transmission orders of the first to Nth coils for transmitting a second sensing signal, on the basis of the signal strength of a received first signal strength indicator when the first signal strength indicator corresponding to the first sensing signal is received, wherein the control unit can transmit, to the receiver, the second sensing signal through the first to Nth coils on the basis of the adjusted transmission orders. Therefore, device efficiency and user convenience can be improved.