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公开(公告)号：US10742074B2
公开(公告)日：2020-08-11
申请号：US16440746
申请日：2019-06-13
Applicant: LG INNOTEK CO., LTD.
Inventor： Yu Ri Park , Yong Il Kwon
Abstract: Disclosed are a method of controlling wireless power transmission and an apparatus therefor. A method of controlling wireless power transmission of a wireless power transmitter includes a first packet reception phase of receiving a foreign object detection status packet, a first determination phase of determining whether the foreign object is present based on the foreign object detection status packet, and a power control phase of controlling power based on a determination result of the first determination phase, wherein the power control phase includes a first power transfer mode for transmitting first power upon determining that the foreign object is present as the determination result of the first determination phase, and a second power transfer mode for transmitting second power upon determining that the foreign object is not present as the determination result of the first determination phase.
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公开(公告)号：US12278502B2
公开(公告)日：2025-04-15
申请号：US18356087
申请日：2023-07-20
Applicant: LG INNOTEK CO., LTD.
Inventor： Yu Ri Park , Yong Il Kwon
Abstract: A method of receiving power of a wireless power receiver, including a signal transmission phase of transmitting a signal including an FOD status packet to a wireless power transmitter; a power reception phase of receiving a first power from the wireless power transmitter when a NAK response indicating that a foreign object is present in the charging area of the wireless power transmitter is received from the wireless power transmitter, or receiving a second power from the wireless power transmitter when an ACK response indicating that the foreign object is not present in the charging area of the wireless power transmitter is received from the wireless power transmitter, in response to the FOD status packet; a phase of transmitting a reception power packet including information on reception power intensity to the wireless power transmitter; and a phase of receiving a signal including information on a result of determining whether the foreign object is present in the charging area from the wireless power transmitter using information measured or calculated by the wireless power transmitter in response to the reception power packet, while receiving the second power.
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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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Patent Agency Ranking
公开(公告)号：US12230979B2
公开(公告)日：2025-02-18
申请号：US18117631
申请日：2023-03-06
Applicant: LG INNOTEK CO., LTD.
Inventor： Yu Ri Park , Yong Il Kwon
Abstract: A method of controlling a power transmitter, the method including entering a negation phase with a power receiver including receiving a foreign object detection status packet from the power receiver, detecting whether a foreign object is present based on the foreign object detection status packet, and transmitting a NACK response to the power receiver indicating the power transmitter has detected the foreign object is present or transmitting an ACK response to the power receiver indicating the power transmitter has detected the foreign object is not present; and entering a power transfer phase including transmitting a first power to the power receiver in response to the transmitted NACK response and again detecting whether the foreign object is present while transmitting the first power, and transmitting a second power greater than the first power in response to the transmitted ACK response.
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公开(公告)号：US12184094B2
公开(公告)日：2024-12-31
申请号：US18356093
申请日：2023-07-20
Applicant: LG INNOTEK CO., LTD.
Inventor： Yu Ri Park , Yong Il Kwon
Abstract: A wireless power receiver of receiving power from a wireless power transmitter, including a receiving part configured to receive a wireless power from the wireless power transmitter; and a main controller configured to generate a signal including an FOD status packet, wherein the main controller transmits a signal including the FOD status packet to the wireless power transmitter; wherein the main controller receives a first power from the wireless power transmitter when a NAK response indicating that a foreign object is present in a charging area of the wireless power transmitter is received from the wireless power transmitter, or receives a second power from the wireless power transmitter when an ACK response indicating that the foreign object is not present in the charging area of the wireless power transmitter is received from the wireless power transmitter, in response to the FOD status packet; wherein the main controller transmits a reception power packet including information on reception power intensity to the wireless power transmitter; and wherein the main controller receives a signal including information on a result of determining whether the foreign object is present in the charging area from the wireless power transmitter using information measured or calculated by the wireless power transmitter in response to the reception power packet, while receiving the second power.
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公开(公告)号：US12142948B2
公开(公告)日：2024-11-12
申请号：US18356056
申请日：2023-07-20
Applicant: LG INNOTEK CO., LTD.
Inventor： Yu Ri Park , Yong Il Kwon
Abstract: A method of transmitting power of a wireless power transmitter, including a reception 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 if it is determined in the first determination phase that the foreign object is present in the charging area, or controlling power transmission in a second power transfer mode if it is determined in the first determination phase that the foreign object is not present in the charging area; a phase of receiving a reception power packet including information on a reception power intensity from the wireless power receiver; a phase of determining the reception power intensity of the wireless power receiver based on information on the reception power intensity; a phase of measuring or calculating a power loss based on a difference between the determined reception power intensity and the transmission power intensity of the wireless power transmitter; a phase of correcting any one of a transmission power, a reception power, and a loss of power using the power loss; and a second determination phase of determining whether the foreign object is present in the charging area while controlling power transmission in the second power transfer mode by the power control phase.
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公开(公告)号：US12119671B2
公开(公告)日：2024-10-15
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：US12021395B2
公开(公告)日：2024-06-25
申请号：US18356003
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 receiving power of a wireless power receiver, the method including a signal transmission phase of transmitting a signal including an FOD status packet to a wireless power transmitter; a power reception phase of receiving a first power from the wireless power transmitter when a NAK response indicating that a foreign object is present in a charging area of the wireless power transmitter is received from the wireless power transmitter, or receiving a second power from the wireless power transmitter when an ACK response indicating that the foreign object is not present in the charging area of the wireless power transmitter is received from the wireless power transmitter, in response to the FOD status packet, and a signal reception phase of receiving a signal including information on a result of determining whether the foreign object is present in the charging area from the wireless power transmitter based on information other than information included in the FOD status packet by the wireless power transmitter while receiving the first power or the second power.
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