公开(公告)号：US12170449B2

公开(公告)日：2024-12-17

申请号：US18024711

申请日：2021-09-06

Applicant: LG Electronics Inc.

Inventor： Hyoungseok Kim ,  Jaeyeol Kim ,  Seonghun Lee ,  Gyunghwan Yook ,  Hongkwon Kim

IPC: H02J50/80 ,  H02J50/12 ,  H02J50/40 ,  H02J50/60

Abstract: A wireless power transmitting device according to an embodiment of the present specification relates to a wireless power transmitting device for transmitting wireless power to a wireless power receiving device, and comprises: a power conversion circuit including a primary coil for transmitting the wireless power to the wireless power receiving device; and a communication/control circuit for communicating with the wireless power receiving device and controlling the power conversion circuit, wherein, before transmitting the wireless power to the wireless power receiving device, the communication/control circuit temporarily applies driving power to the primary coil and then stops the transmission of the driving power, and obtains a quality factor on the basis of a change in the voltage or current of the primary coil during a period of time in which the transmission of the driving power is stopped.

公开(公告)号：US12218524B2

公开(公告)日：2025-02-04

申请号：US18024675

申请日：2021-09-06

Applicant: LG Electronics Inc.

Inventor： Hyoungseok Kim ,  Jaeyeol Kim ,  Seonghun Lee ,  Gyunghwan Yook ,  Hongkwon Kim

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

Abstract: A wireless power transmitting device according to an embodiment of the present specification transmits wireless power to a wireless power receiving device, and includes a power conversion circuit including a primary coil for transmitting the wireless power to the wireless power receiving device and a communication/control circuit for communicating with the wireless power receiving device and controlling the power conversion circuit, wherein, to detect foreign substances between the wireless power receiving device and the wireless power transmitting device, the communication/control circuit stops the transmission of the wireless power for a slot time, detects the foreign substances on the basis of a change in the voltage or current of the primary coil within the slot time, and sets the slot time to start from a point in time when the current of the primary coil is 0.

公开(公告)号：US10342095B2

公开(公告)日：2019-07-02

申请号：US15622942

申请日：2017-06-14

Applicant: LG ELECTRONICS INC.

Inventor： Sanghyun Park ,  Hongkwon Kim ,  Sangphil Byun

IPC: B60Q1/30 ,  H05B33/08

Abstract: An input voltage stabilization circuit for a rear combination lamp includes: an optical output unit including a plurality of Organic Light Emitting Diodes (OLEDs); a voltage converter; and a feedback unit. The voltage converter is configured to supply an output voltage for driving the plurality of OLEDs by converting a first voltage supplied by a vehicle battery to the output voltage, the output voltage being different from the first voltage. The feedback unit is configured to provide, as feedback to the voltage converter, information regarding a maximum voltage value for the plurality of OLEDs. The voltage converter is further configured to adjust the output voltage based on the information provided as feedback by the feedback unit regarding the maximum.