公开(公告)号：US10923939B2

公开(公告)日：2021-02-16

申请号：US16325540

申请日：2016-12-16

Applicant: LG ELECTRONICS INC.

Inventor： Hyoungseok Kim ,  Jeongkyo Seo ,  Jinmoo Park ,  Beomseok Chae

IPC: H02J7/02 ,  H04B5/00 ,  H02J50/90 ,  H02J50/80 ,  H01F27/38 ,  H02J50/10 ,  H01F38/14 ,  H02J50/40 ,  H02J50/12

Abstract: According to one embodiment of the present invention, a wireless power transmitter for transferring power to a wireless power receiver, the wireless power transmitter includes a coil assembly including a plurality of coils, a power conversion unit configured to convert an input direct current (DC) into an alternating current (AC) for driving the coil assembly, and a communication/control unit configured to communicate with the wireless power receiver and control an amount of power to be transferred to the wireless power receiver using the coil assembly, wherein the plurality of coils are arranged in first and second directions, wherein each of the plurality of coils has a substantially rectangular frame structure having a through hole at a center, and is arranged so that at least portion of the each coil overlaps, in a plane, with a neighboring coil in the first and second directions.

公开(公告)号：US10910878B2

公开(公告)日：2021-02-02

申请号：US16215080

申请日：2018-12-10

Applicant: LG ELECTRONICS INC.

Inventor： Jaesung Lee ,  Jinmoo Park ,  Jihyun Lee

IPC: H02J50/10 ,  H02J50/70 ,  H02J50/80 ,  H02J50/12 ,  H02J50/60 ,  H02J50/90 ,  H02J7/02

Abstract: A wireless power transfer device includes an inverter configured to convert DC input to an AC waveform that drives a resonant circuit, a primary coil configured to generate a magnetic field, a shield material placed below the primary coil, a current sensor configured to monitor current in the primary coil, and a communications and control unit configured to communicate with a wireless power receiver device and control power transfer, wherein the primary coil consists of a single layer of which a number of turns is 12, and consists of 105 strands Litz wire of which the diameter is 0.08 mm, wherein the shield material is at least 1.5 mm thick and extends at least 2.5 mm beyond the outside of the primary coil, and wherein the primary coil and the shield material has a self-inductance 10.0 μH.

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：US11271436B2

公开(公告)日：2022-03-08

申请号：US16627200

申请日：2018-06-28

Applicant: LG Electronics Inc.

Inventor： Sungkyu Kim ,  Jeongkyo Seo ,  Jinmoo Park ,  Seonghun Lee ,  Bongsik Kwak ,  Jaesung Lee ,  Jihyun Lee ,  Gyunghwan Yook ,  Joonho Park ,  Youngchan Cho

IPC: H02J50/80 ,  H02J50/12 ,  H01F38/14 ,  H02J50/40 ,  H02J50/60 ,  H02J7/02 ,  H04B5/00 ,  H02J50/90 ,  H04L27/02

Abstract: A multi-coil based wireless power transmission device is disclosed that includes a primary coil array forming a magnetic coupling with a secondary coil provided in a wireless power reception device to transmit wireless power to the wireless power reception device; a plurality of inverters connected to a plurality of primary coils one-to-one to selectively drive each of the plurality of primary coils; a communication and control unit controlling the plurality of inverters and communication with the wireless power reception device such that at least one primary coil is driven based on the degree of magnetic coupling formed by each primary coil and the secondary coil, thereby determining output, which can be provided by the primary coil array, within a value obtained by summing all the maximum outputs individually set to the respective primary coils.

公开(公告)号：US10574300B2

公开(公告)日：2020-02-25

申请号：US15606853

申请日：2017-05-26

Applicant: LG ELECTRONICS INC.

Inventor： Kihyun Jung ,  Jinmoo Park ,  Inchang Chu ,  Jeongkyo Seo ,  Jaesung Lee

IPC: H04B5/00 ,  H02J50/20 ,  H02J50/12 ,  H02J7/02 ,  H02J50/80 ,  H02J50/90

Abstract: A wireless power transmitter for transmitting power by wireless to a terminal includes a power conversion unit and a power transmission control unit. The power conversion unit forms a wireless power signal for wireless power transfer using power supplied from a power supply unit. The power transmission control unit regulates a characteristic of the supplied power, based on orientation information of the terminal. A terminal includes a power receiving unit and a control unit. The power receiving unit receives a wireless power signal formed by a wireless power transmitter. The control unit detects whether or not an orientation of the terminal is changed while the wireless power signal is received, and transmits a control message for power regulation to the wireless power transmitter when the change in the orientation of the terminal is detected.

公开(公告)号：US12161892B2

公开(公告)日：2024-12-10

申请号：US17245534

申请日：2021-04-30

Applicant: LG Electronics Inc.

Inventor： Hyengcheul Choi ,  Jinmoo Park ,  Seonghun Lee ,  Junchan Kwon ,  Taewook Kwon ,  Minsoo Kim

IPC: A62B18/00 ,  A62B7/10 ,  A62B18/02 ,  A62B18/08 ,  A62B23/02

Abstract: A mask apparatus includes a mask body having a fan module, a seal defining a breathing space, a pressure sensor sensing air pressure in the breathing space, a mask body cover coupled to the mask body, and a controller that controls a rotation speed of the fan module based on pressure values. The controller is configured to determine breathing information including a maximum pressure value and time point, and a minimum pressure value and time point, determine a breathing state of a user based on the breathing information, determine whether the breathing state is a steady state, determine a tidal volume of the user based on the breathing information, and control the rotation speed of the fan module based on the tidal volume.

公开(公告)号：US12089668B2

公开(公告)日：2024-09-17

申请号：US17846544

申请日：2022-06-22

Applicant: LG ELECTRONICS INC.

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

IPC: A41D13/11 ,  A41D1/00 ,  H04R1/02 ,  H04R1/08

CPC classification number: A41D13/11 ,  A41D1/002 ,  H04R1/025 ,  H04R1/08 ,  H04R2201/02

Abstract: Provided is a mask apparatus. The mask apparatus includes a mask body in which a microphone and a speaker are installed, a face guard coupled to a rear surface of the rear body so as to be in close contact with a user's face and having a breathing space therein, a pressure sensor installed in the mask body to measure a pressure of the breathing space, and a controller configured to compare a current pressure value measured by the pressure sensor to a reference pressure value and control a voice output of the speaker based on a difference between the current pressure value and the reference pressure value.

公开(公告)号：US11626758B2

公开(公告)日：2023-04-11

申请号：US17244562

申请日：2021-04-29

Applicant: LG ELECTRONICS INC.

Inventor： Jinmoo Park ,  Jeongkyo Seo ,  Beomseok Chae ,  Jaesung Lee ,  Jihyun Lee

IPC: H02J50/12 ,  H01F38/14 ,  B60L53/38 ,  B60L53/122 ,  B60L53/124 ,  B60L53/126 ,  H02J7/00 ,  H02J50/90

Abstract: A wireless power transmitter configured to transfer power to a wireless power receiver, including a coil assembly comprising first and second bottom coils placed adjacent to each other in a line and each consisting of a single layer of 11 turns and a top coil stacked on the first and second bottom coils and consisting of a single layer of 12 turns; and a full-bridge inverter. The first and second bottom coils and the top coil have a substantially rectangular frame structure with a through hole in the center, wherein the top coil lies on a plane surface in the middle between the first and second bottom coils, a distance from the center of the first and second bottom coils to the center of the top coil is set to a range of 21 mm to 25 mm, the first and second bottom coils have a height of 48 mm to 50 mm and a width of 43 mm to 45 mm, and the through hole in the first and second bottom coils has a height of 25 mm to 27 mm and a width of 21 mm to 23 mm, the top coil has a height of 45 mm to 47 mm and a width of 48.5 mm to 50.5 mm, and the through hole in the top coil has a height of 20 mm to 22 mm and a width of 24.5 mm to 26.5 mm, the first and second bottom coils and the top coil have a thickness of 0.9 mm to 1.3 mm, the wireless power transmitter uses an input voltage of the full-bridge inverter to control an amount of power which is transferred, the input voltage has a range of 1 V to 18 V, wherein an operating frequency to control the amount of the power is within a range of 140 kHz to 150 kHz, and the first and second bottom coils and the top coil have a inductance value within a range of 10.6 μH to 12.0 μH.

公开(公告)号：US20230019697A1

公开(公告)日：2023-01-19

申请号：US17846430

申请日：2022-06-22

Applicant: LG ELECTRONICS INC.

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

IPC: A62B23/02

Abstract: Provided is a mask apparatus. The mask apparatus includes a mask body in which a fan module is provided, a face guard coupled to a rear surface of the rear body so as to be in close contact with user's face and having a breathing space therein, a pressure sensor installed in the mask body to measure a pressure of the breathing space, and a controller configured to compare a current pressure value measured by the pressure sensor to a preset atmospheric pressure estimation, update the atmospheric pressure estimation based on a difference between the current pressure value and the atmospheric pressure estimation, and control a rotation speed of the fan module based on a difference between the updated atmospheric pressure estimation and the current pressure value.

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.