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公开(公告)号：US12027887B2
公开(公告)日：2024-07-02
申请号：US18355897
申请日：2023-07-20
Applicant: LG INNOTEK CO., LTD.
Inventor： Yu Ri Park , Yong Il Kwon
CPC classification number: H02J50/60 , H02J7/02 , H02J50/12 , H02J50/20 , H02J50/80 , H02J50/90 , H04L5/0055 , H02J50/402
Abstract: A method of transmitting power of a wireless power transmitter, including a receiving phase of receiving a signal including an FOD status packet from a wireless power receiver; a first determination phase of determining whether a foreign object is present in a charging area of the wireless power transmitter based on the FOD status packet; a power control phase of controlling power transmission in a first power transfer mode upon determining that the foreign object is present in the charging area in the first determination phase, or controlling power transmission in a second power transfer mode upon determining that the foreign object is not present in the charging area in the first determination phase; and a second determination phase of determining whether the foreign object is present in the charging area based on information other than information included in the FOD status packet, while controlling power transmission in one of the first power transfer mode and the second power transfer mode by the power control phase.
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公开(公告)号：US12027886B2
公开(公告)日：2024-07-02
申请号：US18355887
申请日：2023-07-20
Applicant: LG INNOTEK CO., LTD.
Inventor： Yu Ri Park , Yong Il Kwon
CPC classification number: H02J50/60 , H02J7/02 , H02J50/12 , H02J50/20 , H02J50/80 , H02J50/90 , H04L5/0055 , H02J50/402
Abstract: A wireless power receiver for receiving power from a wireless power transmitter, including a receiving part configured to receive wireless power from the wireless power transmitter; and a main controller in which a foreign object detection status packet including at least one of a reference quality factor and a reference peak frequency is stored, wherein the main controller transmits the foreign object detection status packet to the wireless power transmitter; wherein the main controller receives a NAK response from the wireless power transmitter indicating that the foreign object is present, or receives an ACK response from the wireless power transmitter indicating that the foreign object is not present; and wherein the receiving part receives a first power from the wireless power transmitter according to the received NAK response, or receives a second power greater than the first power from the wireless power transmitter according to the received ACK response.
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公开(公告)号：US11349347B2
公开(公告)日：2022-05-31
申请号：US16929933
申请日：2020-07-15
Applicant: LG INNOTEK CO., LTD.
Inventor： Yu Ri Park , Yong Il Kwon
Abstract: A method of controlling a wireless power transmitter can include receiving, during a first determination phase, a foreign object detection status packet; before entering a first power transfer mode for transmitting first power and before entering a second power transfer mode for transmitting second power, determining whether a foreign object is present based on the foreign object detection status packet to generate a determination result; in response to determining that the foreign object is present based on the determination result, transmitting the first power according to the first power transfer mode; in response to determining that the foreign object is not present based on the determination result, transmitting the second power according to the second power transfer mode; and determining, during a second determination phase, whether the foreign object is present while transmitting the first power in the first power transfer mode.
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4.发明授权公开(公告)号：US10069345B2
公开(公告)日：2018-09-04
申请号：US15175592
申请日：2016-06-07
Applicant: LG INNOTEK CO., LTD.
Inventor： Jae Kyu Lee , Yong Il Kwon
Abstract: Disclosed are a method of managing power using a wireless charging system, and an apparatus and system therefor. The wireless power management method in a wireless power transmitter for supplying power to at least one user device including a wireless power receiver installed therein includes receiving first to nth state information items corresponding to the at least one user device, respectively, calculating first statistical information based on the first to nth state information items, and transmitting the first statistical information to a server connected via a network. Accordingly, an effective wireless power management method in a wireless charging system is provided.
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公开(公告)号：US12184092B2
公开(公告)日：2024-12-31
申请号：US18355870
申请日：2023-07-20
Applicant: LG INNOTEK CO., LTD.
Inventor： Yu Ri Park , Yong Il Kwon
Abstract: A wireless power transmitter for transmitting power to a wireless power receiver, including a controller configured to determine whether a foreign object is present; and a transmission part configured to transmit wireless power according to whether the foreign object is present, wherein the controller receives a foreign object detection status packet including at least one of a reference quality factor and a reference peak frequency from the wireless power receiver, and detects whether the foreign object is present based on the foreign object detection status packet, wherein the controller transmits a NAK response indicating that the foreign object is present or an ACK response indicating that the foreign object is not present to the wireless power receiver, and wherein the transmission part transmits a first power to the wireless power receiver according to the transmitted NAK response or transmits a second power greater than the first power to the wireless power receiver according to the transmitted ACK response.
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Patent Agency Ranking
公开(公告)号：US11646607B2
公开(公告)日：2023-05-09
申请号：US17318000
申请日：2021-05-12
Applicant: LG INNOTEK CO., LTD.
Inventor： Jae Hee Park , Yong Il Kwon
CPC classification number: H02J50/60 , G01N27/02 , G01R27/26 , H02J3/02 , H02J7/00308 , H02J7/02 , H02J13/00001 , H02J50/12 , H02J7/00045
Abstract: A wireless power receiver including a transmitter configured to transmit to a wireless power transmitter, a foreign object detection status packet including a mode bit field indicating whether a foreign object detection status packet includes a reference peak frequency of the wireless power receiver, in which the reference peak frequency is pre-assigned to the wireless power receiver; and a receiver configured to receive from the wireless power transmitter, a response indicating the foreign object is present or not present in a charging area of the wireless power transmitter, wherein the response is determined based on a comparison of a measured peak frequency of a power signal transmitted by the wireless power transmitter and an adaptable threshold frequency adapted based on the reference peak frequency included in the foreign object detection status packet from the wireless power receiver.
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公开(公告)号：US10916973B2
公开(公告)日：2021-02-09
申请号：US16539511
申请日：2019-08-13
Applicant: LG INNOTEK CO., LTD.
Inventor： Jae Hee Park , Yong Il Kwon
Abstract: A method for detecting a foreign object disposed in a charging area of a wireless power transmitter can include transmitting, by the wireless power transmitter, a power signal having a predetermined strength; measuring, via a controller, a peak frequency of the power signal; receiving, from a wireless power receiver, information about a reference peak frequency of the wireless power receiver; determining, via the controller, a threshold frequency based on the reference peak frequency; and determining, via the controller, whether the foreign object is present in the charging area based on a comparison of the measured peak frequency of the power signal with the determined threshold frequency.
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公开(公告)号：US11936209B2
公开(公告)日：2024-03-19
申请号：US18119562
申请日：2023-03-09
Applicant: LG INNOTEK CO., LTD.
Inventor： Yong Il Kwon , Jae Hee Park
Abstract: A method of controlling a wireless power transmitter to detect a foreign object can include in response to a wireless power receiver being placed in a charging area of the wireless power transmitter, determining a current peak frequency; collecting a communication error count related to communication between the wireless power transmitter and the wireless power receiver; determining a reference frequency for detecting the foreign object based on a reference peak frequency received from the wireless power receiver; and determining that the foreign object is present within the charging area based on the current peak frequency, the communication error count and the reference frequency.
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公开(公告)号：US11437849B2
公开(公告)日：2022-09-06
申请号：US16761199
申请日：2018-11-02
Applicant: LG INNOTEK CO., LTD.
Inventor： Yong Il Kwon , Jay Park
Abstract: An embodiment of the present invention relates to a wireless charging method in a wireless power transmitter, the method comprising: a step of sensing an object in a charging region; a step of measuring a quality factor value; a step of receiving information including a reference quality factor value; a step of detecting a foreign object by using the measured quality factor value and the reference quality factor value; and a step of transmitting a response signal including ACK or NAK information according to whether or not the foreign object has been detected, wherein the wireless power transmitter transmits information including a first guaranteed power value when the response signal includes ACK information, and transmits information including a second guaranteed power value when the response signal includes NAK information, wherein the first guaranteed power value is greater than the second guaranteed power value.
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公开(公告)号：US11086042B2
公开(公告)日：2021-08-10
申请号：US16307856
申请日：2017-05-18
Applicant: LG INNOTEK CO., LTD.
Inventor： Jae Hee Park , Yong Il Kwon
Abstract: The present invention relates to a method and an apparatus for detecting foreign material for wireless charging, and according to one embodiment of the present invention, a method by which a wireless power transmitter detects foreign material comprises the steps of: measuring the strength of a current inputted into an inverter in a ping step; receiving a packet including a receiver type identifier; determining a threshold value for detecting the foreign material corresponding to the receiver type identifier; and comparing the measured strength of current with the threshold value so as to determine whether the foreign material is present.
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