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公开(公告)号：US20230179022A1
公开(公告)日：2023-06-08
申请号：US17920104
申请日：2021-04-21
Applicant: LG ELECTRONICS INC.
Inventor： Jingu Choi , Minsoo Lee , Gyunghwan Yook , Yongcheol Park
Abstract: A wireless power transmitter, according to one embodiment of the present specification, comprises: a power converter that transmits wireless power to a wireless power receiver and transmits the wireless power to the wireless power receiver by means of magnetic coupling with the wireless power receiver at an operating frequency; and a controller that communicates with the wireless power receiver and controls the transmission of the wireless power by using at least one of in-band communication using the operating frequency and out-band communication using a frequency other than the operating frequency, wherein the controller: transmits and receives a message to and from the wireless power receiver by using both the in-band communication and the out-band communication, wherein the controller transmits and receives a message related to detection of foreign substances between the wireless power receiver and the power converter by using the in-band communication, and transmits and receives an authentication related message to and from the wireless power receiver by using the out-band communication.
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公开(公告)号：US11616398B2
公开(公告)日：2023-03-28
申请号：US17867108
申请日：2022-07-18
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park
Abstract: A wireless power transmitter and a wireless power receiver are discussed. The wireless power transmitter can include a power converter configured to transfer wireless power to a wireless power receiver, and a communicator/controller configured to control the wireless power. The wireless power transmitter can receive a received power (RP) packet which informs a received power value, transmit in response to the RP packet a bit pattern related to requesting permission to communicate, receive a response packet which invites the wireless power transmitter to send a data packet, transmit a specific packet includes a specific power level in response to the response packet, and negotiate a guaranteed power level with the wireless power receiver. The guaranteed power level can be less than or equal to the specific power level.
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公开(公告)号：US11411442B2
公开(公告)日：2022-08-09
申请号：US17188439
申请日：2021-03-01
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park
Abstract: A wireless power transmitter includes a power conversion unit configured to transfer wireless power to a wireless power receiver by forming magnetic coupling with the wireless power receiver; and a communication/control unit configured to communicate with the wireless power receiver to control transmission of the wireless power and to perform transmission or reception of data, wherein the communication/control unit is further configured to receive, from the wireless power receiver, a received power packet (RPP) which informs a value of the wireless power received by the wireless power receiver, transmit a bit pattern to the wireless power receiver in response to the RPP, the bit pattern requesting attention from the wireless power receiver the wireless power transmitter, receive, from the wireless power receiver, a response packet to poll the reason of the attention, and transmit, to the wireless power receiver, a capability packet including information for a new target power level.
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公开(公告)号：US11405873B2
公开(公告)日：2022-08-02
申请号：US16494982
申请日：2018-05-02
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park , Jaeyeol Kim , Joonho Park , Jeongkyo Seo , Gyunghwan Yook , Jaesung Lee
Abstract: The present invention relates to a device and a method for performing authentication in a wireless power transmission system. Disclosed in the present specification is an authentication method in a wireless power transmission system, comprising the steps of: receiving, from a target device, a first packet including indication information related to whether the target device supports an authentication function; transmitting an authentication request message to the target device if the target device supports the authentication function; receiving, from the target device, an authentication response message including a certificate for wireless charging in response to the authentication request message; and confirming the authentication of the target device on the basis of the authentication response message.
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35.发明授权公开(公告)号：US11316384B2
公开(公告)日：2022-04-26
申请号：US17074514
申请日：2020-10-19
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park
Abstract: The present specification provides a wireless power transmission device comprising: a power conversion unit configured so as to transmit, in a power transfer phase, wireless power generated on the basis of magnetic coupling to a wireless power receiving device; and a communication/control unit configured so as to perform an initial calibration for a power parameter prior to the power transfer phase, receive, from the wireless power receiving device, a first received power packet indicating the power received by the wireless power receiving device during the power transfer phase, and detect a foreign object by using the received power and a first power loss determined on the basis of the initial calibration.
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Patent Agency Ranking
36.发明授权公开(公告)号：US11296559B2
公开(公告)日：2022-04-05
申请号：US17217170
申请日：2021-03-30
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan Kim , Yongcheol Park , Jihyun Lee , Gyunghwan Yook
Abstract: Provided are an apparatus and method for performing foreign object detection in a wireless power transfer system. The present specification discloses a method comprising receiving a digital ping from the wireless power transmitter; transmitting an identification and configuration packets to the wireless power transmitter; transmitting a foreign object detection (FOD) state packet which indicates a reference Q factor of the wireless power receiver to the wireless power transmitter; and receiving wireless power through magnetic coupling from the wireless power transmitter based on the foreign object detection result of the wireless power transmitter using the reference Q factor. Irrespective of individual characteristics of a wireless power receiver, accuracy and reliability of detecting a foreign object may be improved.
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公开(公告)号：US11223242B2
公开(公告)日：2022-01-11
申请号：US16492532
申请日：2018-08-24
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park , Gyunghwan Yook
Abstract: The present invention relates to an apparatus and a method for performing communication in a wireless power transmission system. The present specification discloses a wireless power transmission apparatus comprising: a communication/control unit configured to perform negotiation on a first available power index with a wireless power reception apparatus; and a power conversion unit configured to create magnetic coupling of a primary coil according to the first available power index, and transmit power wirelessly to the wireless power reception apparatus. The wireless power transmission apparatus can properly adjust an available power index in a dynamic manner at a time point desired by itself according to a surrounding environment/situation, and leadingly initiate communication and authentication.
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公开(公告)号：US11218032B2
公开(公告)日：2022-01-04
申请号：US16905218
申请日：2020-06-18
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park
Abstract: A wireless power transmitter includes a power conversion unit configured to transfer wireless power to a wireless power receiver by using magnetic coupling between the wireless power transmitter and the wireless power receiver; and a communication/control unit configured to control the wireless power and to perform transmission or reception of data based on communication with the wireless power receiver, wherein the communication/control unit receives from the wireless power receiver a received power packet (RPP) informing a value of power received by the wireless power receiver, transmits a bit pattern, in response to the RPP, requesting for transmitting at least one data packet from the wireless power transmitter to the wireless power receiver, receives a response packet from the wireless power receiver in response to the bit pattern, and transmits the at least one data packet to the wireless power receiver.
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39.发明授权公开(公告)号：US11139702B2
公开(公告)日：2021-10-05
申请号：US16961554
申请日：2019-01-08
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park , Joonho Park , Gyunghwan Yook
Abstract: The present invention relates to an apparatus and a method for performing power calibration in a wireless power transmission system. The present specification provides a wireless power transmission apparatus comprising: a power conversion unit configured to transmit, in a power transfer phase, wireless power generated on the basis of magnetic coupling to a wireless power receiving device; and a communication/control unit configured to perform an initial calibration for a power parameter prior to the power transfer phase, receive a first received power packet from the wireless power receiving device indicating the power received by the wireless power receiving device during the power transfer phase, and detect foreign matter by using the received power and a first power loss determined on the basis of the initial calibration. It is possible to adaptively respond to a newly changed wireless charging environment to calibrate transmission power and reception power, and it is possible to detect foreign matter more precisely by detecting a power loss on the basis of the calibrated transmission and reception power.
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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.
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