公开(公告)号：US11349320B2

公开(公告)日：2022-05-31

申请号：US16742374

申请日：2020-01-14

Applicant: LG ELECTRONICS INC.

Inventor： Sungkyu Kim ,  Seonghun Lee ,  Bongsik Kwak ,  Jihyun Lee ,  Joonho Park

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

Abstract: The present invention relates to a wireless power transmitting device. The wireless power transmitting device comprises a transmitter coil section with a plurality of partially overlapping transmitter coils; a fan for cooling heat generated by the transmitter coil section; and a controller for sending out a detection signal through the transmitter coil section, calculating the number of operating coils based on the strength of a response signal to the detection signal, and controlling the fan based on the calculated number of operating coils. Accordingly, heat generated by the transmitter coils can be reduced more efficiently.

公开(公告)号：US11296558B2

公开(公告)日：2022-04-05

申请号：US16687325

申请日：2019-11-18

Applicant: LG ELECTRONICS INC.

Inventor： Jihyun Lee ,  Seonghun Lee ,  Bongsik Kwak ,  Joonho Park ,  Sungkyu Kim

IPC: H02J50/60 ,  H02J50/80 ,  H02J50/12 ,  G01V3/10 ,  H01F38/14 ,  H02J7/02

Abstract: A wireless power transmission apparatus can include a resonant circuit including a plurality of coils and a plurality of capacitor elements respectively connected to the plurality of coils; a first sensor configured to sense a change in inductance of each of the plurality of coils; a second sensor configured to sense a change in a quality factor of each of the plurality of coils; and a controller configured to calculate feature values based on an inductance variation and a quality factor variation for detecting a foreign object, and determine the foreign object is present on a charging surface of the wireless power transmission apparatus based on whether a feature value combination selected from among the feature values falls within a reference region on a coordinate plane formed by an intersection of a first axis and a second axis, in which the first axis is based on inductance variation and the second axis is based on quality factor variation.

公开(公告)号：US11108270B2

公开(公告)日：2021-08-31

申请号：US15775269

申请日：2016-02-18

Applicant: LG ELECTRONICS INC.

Inventor： Seonghun Lee ,  Byungsang Jung

IPC: H02J50/10 ,  H02J50/80 ,  H04B5/00 ,  H02J50/12 ,  H02J5/00 ,  H02J7/02

Abstract: A control method for an inductive power supply (IPS), according to one embodiment of the present invention, can comprise the steps of: applying a ping for sensing an object; measuring a coil current; sensing the object on the basis of the coil current measurement result; transmitting, to the object, the minimum power for waking up a communication unit of the object, wherein the communication unit performs communication by using an out-of band communication protocol; receiving, from the object, pairing information through the out-of band communication protocol so as to perform pairing with the object; and transmitting main power to the paired object.

公开(公告)号：US10804729B2

公开(公告)日：2020-10-13

申请号：US16204244

申请日：2018-11-29

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park ,  Hyunbeom Lee ,  Jaesung Lee ,  Byungsang Jung ,  Jinmoo Park ,  Seonghun Lee ,  Jihyun Lee ,  Jeongkyo Seo

IPC: H02J7/02 ,  H02J50/10 ,  H02J50/40 ,  H02J50/80 ,  H02J50/12 ,  H02J50/90 ,  H02J50/60

Abstract: A wireless power transmitter which is capable of charging a plurality of wireless power receivers is discussed. The wireless power transmitter includes a plurality of coil cells, a main half-bridge inverter to which a main pulse signal is applied, a plurality of sub half-bridge inverters to which a first sub pulse signal or a second sub pulse signal is applied, at least one current sensor configured to monitor a current, and a communications and control unit configured to control the pulse signals applied to the main half-bridge inverter and sub half-bridge inverters and communicate with the wireless power receivers.

公开(公告)号：US09843196B2

公开(公告)日：2017-12-12

申请号：US14301032

申请日：2014-06-10

Applicant: LG ELECTRONICS INC.

Inventor： Bongsik Kwak ,  Jeongkyo Seo ,  Seonghun Lee

IPC: H02J7/00 ,  H02J5/00 ,  H04B5/00 ,  H02J7/02

CPC classification number: H02J5/005 ,  H02J7/025 ,  H02J50/12 ,  H04B5/0037 ,  H04B5/0075 ,  H04B5/0087 ,  H04B5/0093

Abstract: The present disclosure relates to a wireless power transmitter, a wireless power receiver and a wireless charging system in a wireless power transfer field. A wireless power transmitter disclosed herein includes a first coil configured to transfer a wireless power signal to a wireless power receiver, a second coil having a wire wound to transfer power to the wireless power receiver in a wireless manner, and a controller configured to control operations of the first and second coils, wherein the first coil is provided with a wire wound along an edge of a shape of the second coil.

公开(公告)号：US11984734B2

公开(公告)日：2024-05-14

申请号：US17616752

申请日：2020-02-27

Applicant: LG ELECTRONICS INC.

Inventor： Jinho Youn ,  Seonghun Lee

IPC: H02J50/30 ,  G02B27/09 ,  H01S3/00

CPC classification number: H02J50/30 ,  G02B27/0916 ,  G02B27/0927 ,  G02B27/0944 ,  H01S3/005

Abstract: The present disclosure provides a display system including: a display apparatus; a wireless power reception apparatus configured to supply power to the display apparatus; and a wireless power transmission apparatus configured to emit a laser beam toward the wireless power reception module, wherein the wireless power reception module is formed as a bar type; and the wireless power transmission module comprises a light source configured to emit light of a specific wavelength as a laser beam, and a light shaping unit configured to shape the light of the light source and to convert the shaped light into a laser beam having a different cross-section and output the laser beam. Accordingly, by performing wireless power transmission using laser light, which satisfies the electromagnetic interference (EMI) requirements, wireless power may be transmitted to high-quality wall-mounted TVs and AV devices.

公开(公告)号：US11949467B2

公开(公告)日：2024-04-02

申请号：US17260790

申请日：2019-07-16

Applicant: LG ELECTRONICS INC.

Inventor： Joonho Park ,  Bongsik Kwak ,  Sungkyu Kim ,  Yongcheol Park ,  Seonghun Lee ,  Jihyun Lee

IPC: H04B5/00 ,  H02J50/12 ,  H02J50/40 ,  H02J50/80 ,  H04B17/10 ,  H04W52/38

CPC classification number: H04B5/0037 ,  H02J50/12 ,  H02J50/40 ,  H02J50/80 ,  H04B17/102 ,  H04W52/383

Abstract: The present invention relates to an apparatus and a method for supporting heterogeneous communication in a wireless power transmission system. The present disclosure discloses a wireless power receiver comprising: a power pickup unit configured to receive, from a wireless power transmitter, a digital ping signal or wireless power by magnetically coupling with the wireless power transmitter at an operating frequency, and to convert an alternating current signal generated by the wireless power into a direct current signal; a communication/control unit configured to receive the direct current signal from the power pickup unit, and to perform at least one of an in-band communication using the operating frequency and an out-band communication using a frequency other than the operating frequency; and a load configured to receive the direct current signal from the power pickup unit. As a heterogeneous communication protocol can be selected at an early stage of power transmission between the wireless power transmitter and the wireless power receiver, it is possible to support various applications of wireless power transmission.

公开(公告)号：US20230015788A1

公开(公告)日：2023-01-19

申请号：US17847382

申请日：2022-06-23

Applicant: LG ELECTRONICS INC.

Inventor： Sooyong PARK ,  Jinmoo Park ,  Seonghun Lee ,  Junchan Kwon ,  Minsoo Kim

IPC: A61B5/00 ,  A62B18/02

Abstract: Provided is a method for controlling a mask apparatus. The method for controlling the mask apparatus includes measuring a current pressure value with respect to a mask by using a pressure sensor, comparing each of a preset atmospheric pressure maximum estimation and a preset and a preset atmospheric pressure minimum estimation to the current pressure value; updating the atmospheric pressure maximum estimation and the atmospheric pressure minimum estimation according to the comparison result, and controlling a voice output of a speaker based on a difference between the updated atmospheric pressure maximum estimation and the updated atmospheric pressure minimum estimation.

公开(公告)号：US11387866B2

公开(公告)日：2022-07-12

申请号：US17170322

申请日：2021-02-08

Applicant: LG ELECTRONICS INC.

Inventor： Jinho Youn ,  Jaeyeol Kim ,  Seonghun Lee ,  Hyokune Hwang

IPC: H04B5/00 ,  H02J50/80 ,  H02J50/12 ,  H02J50/40 ,  H02J50/60 ,  H02J7/02

Abstract: A wireless power receiver for receiving wireless power from a wireless power transmitter and for transmitting a control packet to the wireless power transmitter in a wireless power transfer system, includes a power pick-up unit configured to receive wireless power from the wireless power transmitter via magnetic coupling with the wireless power transmitter, and to convert an AC signal generated by the wireless power to a DC signal, a communication/control unit configured to receive the DC signal from the power pick-up unit, and to perform control of the wireless power and a load configured to receive the DC signal from the power pick-up unit, wherein the communication/control unit is configured to transmit a control error packet including a control error value for the wireless power to the wireless power transmitter in a first time interval or a second time interval.

公开(公告)号：US11316380B2

公开(公告)日：2022-04-26

申请号：US17028733

申请日：2020-09-22

Applicant: LG ELECTRONICS INC.

Inventor： Sungkyu Kim ,  Bongsik Kwak ,  Hyunggeol Kwak ,  Seonghun Lee

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

Abstract: A wireless power transmitter can include a power transmitter including a plurality of first transmitting coils and a second transmitting coil; and a controller, in which the plurality of first transmitting coils are disposed on a same plane, the second transmitting coil is disposed on a different plane than the plurality of first transmitting coils, the second transmitting coil is disposed at a center of a region corresponding to the plurality of first transmitting coils, an area of a region corresponding to the second transmitting coil is smaller than an area of the region corresponding to the plurality of first transmitting coils, and the controller is configured to transmit power to a wireless power receiver through the plurality of first transmitting coils and the second transmitting coil when a receiving coil in the wireless power receiver is of a first type, and transmit power to the wireless power receiver through the second transmitting coil when the type of the receiving coil is of a second type.