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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：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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23.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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25.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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Patent Agency Ranking
26.发明授权公开(公告)号：US12166365B2
公开(公告)日：2024-12-10
申请号：US17999323
申请日：2021-05-20
Applicant: LG ELECTRONICS INC.
Inventor： Jingu Choi , Yongcheol Park , Minsoo Lee , Gyunghwan Yook
Abstract: A method by which a wireless power transmitter transmits wireless power, according to one embodiment of the present specification, comprises: a ping step of transmitting a digital ping, and receiving a response to the digital ping from a wireless power receiver; a configuration step of receiving, from the wireless power receiver, a configuration packet including information about whether the wireless power receiver supports an authentication function; and a power transmission step of transmitting wireless power to the wireless power receiver, wherein the power transmission step includes a low-power transmission step of transmitting low wireless power, an authentication step of authenticating the wireless power transmitter on the basis the supporting of the authentication function by the wireless power receiver, and a high-power transmission step of transmitting high wireless power on the basis of the successful authentication of the wireless power transmitter in the authentication step.
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公开(公告)号：US20230208194A1
公开(公告)日：2023-06-29
申请号：US17926793
申请日：2021-05-24
Applicant: LG ELECTRONICS INC.
Inventor： Minsoo Lee , Jingu Choi , Gyunghwan Yook , Yongcheol Park
CPC classification number: H02J50/10 , H02J50/402 , H02J50/80 , H04W4/80
Abstract: A wireless power transmission method by a wireless power transmission apparatus, according to an embodiment of the present specification, comprises: a ping step for transmitting a digital ping and receiving a response to the digital ping from a wireless power reception apparatus; a configuration step for receiving, from the wireless power reception apparatus, a configuration packet including information about elements of an initial power transmission contract; a contract step for receiving, from the wireless power reception apparatus, information about an element of an expanded power transmission contract for updating the initial power transmission contract to the expanded power transmission contract; and a power transmission step for transmitting wireless power to the wireless power reception apparatus, on the basis of the expanded power transmission contract, and receiving, from the wireless power reception apparatus, first control information for control of the wireless power, wherein the response to the digital ping and the configuration packet are received via in-band communication based on a power signal of the wireless power, and the first control information is received via out-band communication that is wireless communication different from the in-band communication.
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公开(公告)号：US11670966B2
公开(公告)日：2023-06-06
申请号：US17567741
申请日：2022-01-03
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park , Gyunghwan Yook
CPC classification number: H02J50/10 , H02J50/12 , H02J50/80 , H02J7/00032 , H02J50/005 , H02J50/40
Abstract: A wireless power transmission apparatus including a controller configured to perform a negotiation for a first available power indicator with a wireless power reception apparatus; and a power converter configured to transmit a wireless power to the wireless power reception apparatus according to the first available power indicator. The controller transmits, to the wireless power reception apparatus in response to a received power packet, a bit pattern response requesting a communication by the wireless power transmission apparatus to change the first available power indicator, and transmits a packet related to a second available power indicator to the wireless power reception apparatus. Further, the bit pattern response is composed of 8 bits, and the bit pattern response is defined as a different pattern from a bit pattern for an 8-bit ACK response, an 8-bit NAK response and an 8-bit ND response.
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公开(公告)号：US11664852B2
公开(公告)日：2023-05-30
申请号：US17853137
申请日：2022-06-29
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol Park , Jaeyeol Kim , Joonho Park , Jeongkyo Seo , Gyunghwan Yook , Jaesung Lee
IPC: H02J50/80 , H02J7/00 , G06F21/44 , H04W52/22 , H04W52/28 , H04W52/34 , H04B5/00 , H02J50/00 , H02J50/40 , H02J50/50 , H02J50/10 , H02J50/12 , H02J50/60
CPC classification number: H04B5/0037 , G06F21/445 , H02J7/00034 , H02J7/00045 , H02J50/80 , H04W52/223 , H04W52/286 , H04W52/34 , H02J7/00032 , H02J50/005 , H02J50/10 , H02J50/12 , H02J50/40 , H02J50/50 , H02J50/60
Abstract: A wireless power receiver includes a power pickup configured to receive a wireless power from a wireless power transmitter, and a communicator/controller configured to control the wireless power. The wireless power receiver transmits, to the wireless power transmitter during a configuration phase, a configuration packet including an AI flag related to whether the wireless power receiver supports an authentication function, receives, from the wireless power transmitter during a negotiation phase, a capability packet including an AR flag and a potential power value of the wireless power transmitter, wherein the AR flag is related to whether the wireless power transmitter supports the authentication function, and performs a power transfer phase with the wireless power transmitter. The wireless power receiver transmits, to the wireless power transmitter during the power transfer phase, an authentication request message, and receives, from the wireless power transmitter during the power transfer phase, an authentication response message.
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30.发明授权公开(公告)号：US11664688B2
公开(公告)日：2023-05-30
申请号：US17449884
申请日：2021-10-04
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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