公开(公告)号：US11108280B2

公开(公告)日：2021-08-31

申请号：US16859519

申请日：2020-04-27

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park ,  Jeongkyo Seo ,  Seonghun Lee ,  Bongsik Kwak ,  Jaesung Lee

IPC: H02J7/00 ,  H02J50/80 ,  H02J50/12 ,  H02J7/02 ,  H02J5/00 ,  H04B5/00 ,  H04L1/00 ,  H04L27/10 ,  H04L5/14 ,  H04L1/18

Abstract: A communication method of a wireless power receiver for receiving power in a wireless manner, includes generating information of the wireless power receiver based on a load modulation within a slot being allocated to the wireless power receiver while wireless power is received from a wireless power transmitter; receiving the wireless power from to the wireless power transmitter; generating first information of the wireless power receiver based on the load modulation within a first unallocated slot among the plurality of slots, wherein the first information is in collision with second information generated by another wireless power receiver; demodulating a collision related signal of the wireless power transmitter based on a frequency shift keying (FSK); and executing a collision resolution mechanism.

公开(公告)号：US10931332B2

公开(公告)日：2021-02-23

申请号：US16839714

申请日：2020-04-03

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: The present invention relates to a device and method for transmitting data in a wireless power transmission system. The present specification discloses a wireless power reception device comprising: a power pickup unit configured to receive wireless power from a wireless power transmission device by magnetic coupling with the wireless power transmission device, and convert an AC signal generated by the wireless power into a DC signal; a communication/control unit configured to receive the DC signal from the power pickup unit and perform control of the wireless power; and a load configured to receive the DC signal from the power pickup unit. According to the present invention, a large amount of data can be easily exchanged between a wireless power transmission device and a wireless power reception device by adjusting a transmission time interval of a control error packet (CEP) and a timeout of the CEP.

公开(公告)号：US10673286B2

公开(公告)日：2020-06-02

申请号：US16184604

申请日：2018-11-08

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park ,  Jeongkyo Seo ,  Seonghun Lee ,  Bongsik Kwak ,  Jaesung Lee

IPC: H02J7/00 ,  H02J50/80 ,  H02J50/12 ,  H02J7/02 ,  H02J5/00 ,  H04B5/00 ,  H04L1/00 ,  H04L27/10 ,  H04L5/14 ,  H04L1/18

Abstract: A communication method of a wireless power transmitter for transferring power in a wireless manner, includes allocating a slot among a plurality of slots to a first wireless power receiver, the slot being allocated to the first wireless power receiver for acquiring information of the first wireless power receiver while wireless power is transferred to the first wireless power receiver; transferring the wireless power to the first wireless power receiver by the wireless power transmitter; detecting a second wireless power receiver by the wireless power transmitter during the wireless power transfer to the first wireless power receiver; and generating a collision related signal based on a frequency shift keying (FSK) such that a collision resolution mechanism is executed by each of the first and second wireless power receivers respectively when first information generated by the first wireless power and second information generated by the second wireless power are in a collision within a first unallocated slot among the plurality of slots, the first information and the second information being generated based on a load modulation.

公开(公告)号：US10608472B2

公开(公告)日：2020-03-31

申请号：US15527162

申请日：2015-02-06

Applicant: LG ELECTRONICS INC.

Inventor： Seonghun Lee

IPC: H02J50/12 ,  H04B5/00 ,  H02J7/02 ,  H05B6/12 ,  H02J50/80 ,  H02J5/00 ,  H02J7/00 ,  H02J50/40

Abstract: The present invention relates to a wireless power transmission device, a wireless power reception device, and a wireless charging system in a wireless power transmission field. The wireless power transmission device according to the present invention comprises: a power conversion unit having a plurality of transmission coils formed to transmit wireless power; a first communication module for sensing a wireless power reception device located in any one of power transmission areas respectively corresponding to the plurality of transmission coils; a second communication module for transmitting/receiving, through the first communication module, a power control message to/from the wireless power reception device, by corresponding to the sensing of the wireless power reception device located in any one power transmission area; and a control unit for transmitting, on the basis of the power control message, wireless power to the wireless power reception device located in any one power transmission area through a transmission coil arranged to correspond to any one power transmission area.

公开(公告)号：US10312737B2

公开(公告)日：2019-06-04

申请号：US15460567

申请日：2017-03-16

Applicant: LG ELECTRONICS INC.

Inventor： Byungsang Jung ,  Seonghun Lee ,  Hwanyong Kim ,  Seonwook Park ,  Seungje Park ,  Yongjun Son ,  Jaesung Yang ,  Gyoocheol Choi

IPC: H01F38/14 ,  H02J50/12 ,  H05B33/08 ,  H05B37/02

Abstract: A wireless power transmission system using multiple coils comprises a transmitter; and a receiver, wherein the transmitter includes a module for receiving a predetermined voltage, and a primary coil for generating a primary resonance frequency in accordance with the received voltage. The receiver spaced apart from the transmitter includes a load for emitting light, capacitors connected in series or in parallel in accordance with an equivalent resistance of the load, and a secondary coil for generating a secondary resonance frequency greater than the primary resonance frequency.

公开(公告)号：US10256666B2

公开(公告)日：2019-04-09

申请号：US15101826

申请日：2015-02-06

Applicant: LG ELECTRONICS INC.

Inventor： Byungsang Jung ,  Hyunbeom Lee ,  Seonghun Lee ,  Yongcheol Park

IPC: H02J50/12 ,  H02J7/02 ,  H02J7/04

Abstract: The present disclosure relates to a wireless power reception method, a wireless power reception apparatus, and a wireless charging system in a wireless power transmission and reception field, and the wireless power reception apparatus may include a power receiving unit configured to change a magnetic flux to a current to receive power in a wireless manner, and a power controller connected to the power receiving unit to change a resonant frequency to control power received from the power receiving unit, wherein the power controller includes a first capacitor, a second capacitor connected to the first capacitor in parallel, a first switch connected to the second capacitor in series to flow a current in a first direction, a second switch configured to flow a current in a second direction opposite to the first direction, and a switch controller configured to control the first and the second switch.

公开(公告)号：US10177592B2

公开(公告)日：2019-01-08

申请号：US15303413

申请日：2015-04-10

Applicant: LG ELECTRONICS INC.

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

IPC: H01F27/42 ,  H01F37/00 ,  H01F38/00 ,  H02J7/02 ,  H02J17/00 ,  H02J50/80 ,  H02J50/90 ,  H02J50/12 ,  H02J50/60 ,  H02J50/10 ,  H02J50/40

Abstract: A wireless power transmitter is disclosed. The wireless power transmitter, which is capable of charging a plurality of wireless power receivers, 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 second sub pulse signal is applied; a current sensor that monitors the current through the coil cells; and a communications and control unit that controls the pulse signals applied to the main half-bridge inverter and sub half-bridge inverters and that communicates with the wireless power receivers, wherein the sub half-bridge inverters may be respectively connected to the coil cells.

公开(公告)号：US10164482B2

公开(公告)日：2018-12-25

申请号：US15024243

申请日：2014-12-01

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park ,  Jeongkyo Seo ,  Seonghun Lee ,  Bongsik Kwak ,  Jaesung Lee

IPC: H02J7/00 ,  H02J50/80 ,  H02J50/12 ,  H02J7/02 ,  H02J5/00 ,  H04B5/00 ,  H04L1/00 ,  H04L27/10 ,  H04L5/14 ,  H04L1/18

Abstract: The present invention relates to a wireless power transmission method, a wireless power transmission apparatus, and a wireless charging system in a wireless power transmission field, and the wireless power transmission method may include receiving first information of a first wireless power receiver and second information of a second wireless power receiver that receive power in a wireless manner within a first slot among a plurality of slots, transmitting a NAK (not-acknowledge) signal to the first and the second wireless power receiver and executing a collision resolution mechanism in the first and the second wireless power receiver.