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1.发明公开公开(公告)号：US20240364141A1
公开(公告)日：2024-10-31
申请号：US18771498
申请日：2024-07-12
发明人： Santosh Bhandarkar , Alex Dumais
摘要： Object detection in wireless power systems and related system, methods, and devices are disclosed. A controller for a wireless power transmitter includes a measurement voltage potential input terminal and a processing core. The processing core is to determine an average of peak to peak amplitude differences present in sampled measurement voltage potentials for each of the plurality of transmit coils, determine a lowest average of the peak to peak amplitude differences, and select a transmit coil corresponding to the lowest average of the peak to peak amplitude differences to transmit wireless power to a receive coil of a wireless power receiver. A wireless power system includes a tank circuit selectively including any one of a plurality of transmit coils.
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2.发明授权公开(公告)号：US12119676B2
公开(公告)日：2024-10-15
申请号：US18140719
申请日：2023-04-28
发明人： Takahiro Shichino
CPC分类号： H02J50/80 , H02J7/00045 , H02J50/12 , H02J50/60
摘要： Foreign substance detection can be performed with a simple configuration in a power transmission system. A power transmitting apparatus that wirelessly transmits power to a power receiving apparatus, the power transmitting apparatus comprises: determination means for, in a case where an initial impedance value and the detected output impedance value do not match and there is no change in the output impedance value between before and after the transmission of a predetermined detection signal, determining that a foreign substance is present within a predetermined power transmission range, and, in a case where the initial impedance value and the detected output impedance value do not match and there is a change in the output impedance value between before and after the transmission of the predetermined detection signal, determining that a power receiving apparatus is present within the predetermined power transmission range.
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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
申请人： LG INNOTEK CO., LTD.
发明人： Yu Ri Park , Yong Il Kwon
CPC分类号： H02J50/60 , H02J7/02 , H02J50/12 , H02J50/20 , H02J50/80 , H02J50/90 , H04L5/0055 , H02J50/402
摘要： 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：US12113371B2
公开(公告)日：2024-10-08
申请号：US18186837
申请日：2023-03-20
发明人： Santosh Bhandarkar , Alex Dumais
CPC分类号： H02J50/60 , G01R27/2611 , H02J50/12 , H02J50/402
摘要： Object detection for wireless power transmitters and related systems, methods, and devices are disclosed. A controller for a wireless power transmitter is configured to receive a measurement voltage potential responsive to a tank circuit signal at a tank circuit, provide an alternating current (AC) signal to each of the plurality of transmit coils one at a time, and determine at least one of a resonant frequency and a quality factor (Q-factor) of the tank circuit responsive to each selected transmit coil of the plurality of transmit coils. The controller is also configured to select a transmit coil to use to transmit wireless power to a receive coil of a wireless power receiver responsive to the determined at least one of the resonant frequency and the Q-factor for each transmit coil of the plurality of transmit coils.
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5.发明公开公开(公告)号：US20240322614A1
公开(公告)日：2024-09-26
申请号：US18678383
申请日：2024-05-30
申请人： LG Electronics Inc.
发明人： Yongcheol PARK , Gyunghwan YOOK
摘要： A wireless power transmitter including a power conversion unit configured to transmit wireless power generated based on magnetic coupling in a power transfer phase and a control unit configured to receive, from the wireless power receiver operating at a first operating point, a first received power packet of the first operating point and a second received power packet of the first operating point based on the first received power packet of the first operating point and the second received power packet of the first operating point and configured to receive a first received power packet of the second operating point and a second received power packet of the second operating point related to power calibration and construct a second power calibration curve based on the first received power packet of the second operating point and the second received power packet of the second operating point.
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公开(公告)号：US12100972B2
公开(公告)日：2024-09-24
申请号：US17883948
申请日：2022-08-09
发明人： Chan Young Jeong , Tao Qi , Young Chul Ryu , Kwangmuk Choi , Pooja Agrawal , Krishal Jaswantsinh Solanki , Adnan Dzebic
摘要： Systems, apparatuses, and methods for detecting a foreign object on a wireless power charging region are described. A circuit can detect an object inductively coupled to a wireless power transmitter. The circuit can further measure an input parameter prior to a power transfer stage, the input parameter can be one of an input current and an input power. The circuit can further compare the measured input parameter with a predetermined value. The circuit can further determine whether the object is a foreign object or the wireless power receiver based on a result of the comparison between the measured input parameter with the predetermined value.
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公开(公告)号：US12097779B2
公开(公告)日：2024-09-24
申请号：US17704846
申请日：2022-03-25
发明人： Sotirios Sotiriou , Daniel Cichon , Tobias Dräger
IPC分类号： G01S5/04 , B60L53/124 , B60L53/37 , B60L53/38 , G01S5/02 , H02J50/10 , H02J50/40 , H02J50/60 , H02J50/90
CPC分类号： B60L53/38 , B60L53/124 , B60L53/37 , G01S5/0284 , G01S5/0294 , G01S5/04 , H02J50/10 , H02J50/40 , H02J50/60 , H02J50/90 , B60L2240/12 , B60L2240/24 , B60L2240/32
摘要： A method is disclosed for determining a relative pose between a primary winding structure and a secondary winding structure of a system for inductive power transfer to a vehicle. The method includes obtaining first output values generated by multiple receiving devices of a first radio direction finding system. The first radio direction finding system further includes a transmitting device. The receiving devices generate the output values in response to receiving a position signal transmitted by the transmitting device. The method includes determining a motion value of the vehicle. The method includes providing the obtained first output values and the motion value as input values to a model. The method includes determining a first relative pose based on the model. The method includes determining the relative pose based on the first relative pose.
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公开(公告)号：US20240313587A1
公开(公告)日：2024-09-19
申请号：US18668850
申请日：2024-05-20
发明人： Tomoki Hiramatsu
CPC分类号： H02J50/80 , H02J7/00712 , H02J50/10 , H02J50/60
摘要： A power transmission apparatus configured to wirelessly transmit power to a power reception apparatus executes, when wirelessly transmitting power, detection processing for detecting an object different from the power reception apparatus, using a power loss, obtains, from the power reception apparatus, reference value information regarding a reference value of received power used to obtain the power loss, and performs a specific control after the power loss has been obtained and in a case where a predetermined time has elapsed since a predetermined timing associated with a timing at which information is obtained from the power reception apparatus, without obtaining the reference value information that is valid, the specific control being a control to prevent a power transmission output from being increased, regardless of received power in the power reception apparatus.
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公开(公告)号：US12088122B2
公开(公告)日：2024-09-10
申请号：US17915462
申请日：2021-02-08
申请人： LG ELECTRONICS INC.
发明人： Yongcheol Park
摘要： A wireless power transmission device according to one embodiment of the present specification transmits wireless power to a wireless power reception device, and comprises: a power conversion circuit that transmits the wireless power to the wireless power reception device; and a communication/control circuit that communicates with the wireless power reception device and controls the wireless power, wherein the communication/control circuit transmits, to the wireless power reception device, a data packet comprising information on a number of slots and the length of the slots, for performing detection of foreign substances using the slots.
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10.发明授权公开(公告)号：US12088120B2
公开(公告)日：2024-09-10
申请号：US17509499
申请日：2021-10-25
发明人： Takahiro Shichino
摘要： A power receiving apparatus that wirelessly receives power from a power transmitting apparatus comprises a first communication unit communicating with the power transmitting apparatus, a second control unit executing detection of another apparatus capable of performing short-range wireless communication and a first control unit controlling whether to execute the detection by the second control unit. The first control unit, in a case where it is determined that the power transmitting apparatus does not have the detection function, controls to execute the detection by the second control unit when a detection status of another apparatus by the second control unit is undetermined, and not to execute the detection by the second control unit when the detection status is determined. The first communication unit transmits, to the power transmitting apparatus, a signal corresponding to a result of the detection by the second control unit.
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