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1.发明公开公开(公告)号：US20240186837A1
公开(公告)日：2024-06-06
申请号：US18444073
申请日：2024-02-16
发明人： Rupam Basak , Jayanti Ganesh , Viswanathan Kanakasabai , Suma Memana Narayana Bhat , Subbarao Tatikonda
CPC分类号： H02J50/402 , H02J7/0013 , H02J50/12 , H02J50/80 , H02J50/90
摘要： This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for a wireless power transmission apparatus that supports charging of one or more wireless power receiving apparatuses. The wireless power transmission apparatus may include multiple primary coils organized in groups (referred to as zones). Each zone may have a local controller for managing operation of one primary coil in the zone at a time. A master controller may selectively couple the primary coils to the local controllers. When a first primary coil is coupled to the local controller for a zone, the other primary coils in that zone may be disabled. The master controller may manage which primary coils from neighboring zones are coupled to their respective local controllers. Thus, when the first primary coil is activated, the adjacent primary coils (near the first primary coil) can be muted or disabled to mitigate undesirable interference.
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公开(公告)号：US11798737B2
公开(公告)日：2023-10-24
申请号：US17541891
申请日：2021-12-03
发明人： Suma Memana Narayana Bhat , Deepak Aravind , Somakumar Ramachandrapanicker , Arun Kumar Raghunathan
CPC分类号： H01F38/14 , H02J7/0042 , H02J50/12 , H02J50/40
摘要： A charging pad for charging one or more receiver devices is disclosed. The charging pad includes a power drive unit configured to generate a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Further, the charging pad includes a transmitting unit including a single power exchange coil coupled to the power drive unit, wherein the single power exchange coil includes a first coil segment configured to transmit the first AC voltage signal having the first frequency when the first AC voltage signal is received from the power drive unit. Also, the single power exchange coil includes a second coil segment configured to transmit the second AC voltage signal having the second frequency when the second AC voltage signal is received from the power drive unit.
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公开(公告)号：US20230327491A1
公开(公告)日：2023-10-12
申请号：US18336335
申请日：2023-06-16
发明人： Suma Memana Narayana Bhat , Viswanathan Kanakasabai , Arun Kumar Raghunathan , Rahul Bhujade , Satishbabu Bhogineni , Somakumar Ramachandrapanicker
摘要： A transmitting assembly (114, 214, 334) configured to transmit electric power in a universal wireless charging device (102, 200, 302) is presented. The transmitting assembly (114, 214, 334) includes a first coil (116, 216, 316) embedded in a printed circuit board (220) and configured to transmit a first AC voltage signal having a first frequency. Also, the transmitting assembly (114, 214, 334) includes a second coil (118, 218, 318) disposed on the printed circuit board (220) and configured to transmit a second AC voltage signal having a second frequency, wherein the second frequency is different from the first frequency, and wherein the first AC voltage signal having the first frequency and the second AC voltage signal having the second frequency are used to wirelessly charge a plurality of receiver devices (104, 106) having different frequency standards.
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4.发明申请公开(公告)号：US20220247229A1
公开(公告)日：2022-08-04
申请号：US17612805
申请日：2020-05-20
发明人： Rupam Basak , Jayanti Ganesh , Viswanathan Kanakasabai , Suma Memana Narayana Bhat , Subbarao Tatikonda
摘要： This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for a wireless power transmission apparatus that supports charging of one or more wireless power receiving apparatuses. The wireless power transmission apparatus may include multiple primary coils organized in groups (referred to as zones). Each zone may have a local controller for managing operation of one primary coil in the zone at a time. A master controller may selectively couple the primary coils to the local controllers. When a first primary coil is coupled to the local controller for a zone, the other primary coils in that zone may be disabled. The master controller may manage which primary coils from neighboring zones are coupled to their respective local controllers. Thus, when the first primary coil is activated, the adjacent primary coils (near the first primary coil) can be muted or disabled to mitigate undesirable interference.
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公开(公告)号：US20210138917A1
公开(公告)日：2021-05-13
申请号：US17046574
申请日：2019-04-17
IPC分类号： B60L53/124 , G01V3/10 , H02J50/10
摘要： A detection device (100) includes a detection mat (102) having a plurality of detection coils (106), and at least one pair of groups of detection coils (106), the pair of groups of detection coils (106) includes first and second groups of detection coils (106). The first and second group of detection coils (106) comprises first and second first and second impedance values. The detection device (100) includes one or more drive sub-systems (112) and a comparison sub-system (112). The drive sub-systems (112) are operatively coupled to the detection mat (102) and configured to excite at least one pair of groups of detection coils (106). The comparison sub-system (114) is operatively coupled to the detection mat (102) and configured to receive a differential current signal from the pair of groups of detection coils (106), the comparison sub-system (114) is configured to generate a control signal based on the differential current signal.
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公开(公告)号：US20210078426A1
公开(公告)日：2021-03-18
申请号：US17048424
申请日：2019-04-17
摘要： A method (500) includes utilizing (502) a detection device comprising a detection mat having a plurality of detection coils, and at least one pair of groups of detection coils having a first group of detection coils and a second group of detection coils, and where the first group of detection coils includes a first impedance value, and a second group of detection coils includes a second impedance value. The method further includes determining (504) alignment parameters representative of electromagnetic coupling between at least one pair of groups of detection coils of the detection mat and an electromagnetic field generated by an apparatus coil, and comparing (506) the alignment parameters with a reference. The method also includes generating (508) a control signal indicative of an alignment position of the apparatus coil with respect to the detection mat based on the compared alignment parameters.
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公开(公告)号：US20170307702A1
公开(公告)日：2017-10-26
申请号：US15517132
申请日：2015-10-08
发明人： Viswanathan Kanakasabai , Adnan Kutubuddin Bohori , Rajendra Naik , Suma Memana Narayana Bhat , Arun Kumar Raghunathan
IPC分类号： G01R33/385 , A61B5/055
CPC分类号： G01R33/3852 , A61B5/055 , G01R33/36
摘要： A gate driver unit is presented. The gate driver unit includes a first power exchanging coil operatively coupled to a power source. The gate driver unit includes a second power exchanging coil configured to receive power from the first power exchanging coil via a magnetic field and a field focusing element disposed between the first power exchanging coil and the second power exchanging coil and configured to focus the magnetic field onto the second power exchanging coil. The gate driver unit also includes a first circuit coupled to the second power exchanging coil. The gate driver unit includes a gate drive subunit operatively coupled to the first circuit and configured to provide an output signal to a control terminal corresponding to a controllable switch of a second circuit. A magnetic resonance imaging system and a method of contactless power transfer in a magnetic resonance imaging system are also presented.
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公开(公告)号：US20240094426A1
公开(公告)日：2024-03-21
申请号：US18264662
申请日：2022-02-16
发明人： Viswanathan Kanakasabai , Subbarao Tatikonda , Jayanti Ganesh , Joginder Yadav , Suma Memana Narayana Bhat
摘要： This disclosure provides systems, methods and apparatuses for foreign object detection (FOD) in a wireless power transfer (WPT) system. Some implementations relate generally to the use of detection coils that are excited to measure and compare a differential current through a coil pair that includes at least two detection coils. A foreign object may cause a change in impedance for one or more detection coils compared to one or more other detection coils. By detecting the differential current of the coil pair, a detection apparatus may determine that a foreign object is in proximity to one of the detection coils of the coil pair. This disclosure provides several options for the design, construction, layout, and operations of detection coils to improve foreign object detection.
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公开(公告)号：US20230387727A1
公开(公告)日：2023-11-30
申请号：US18447433
申请日：2023-08-10
发明人： Viswanathan Kanakasabai , Subbarao Tatikonda , Jayanti Ganesh , Joginder Yadav , Suma Memana Narayana Bhat
摘要： This disclosure provides systems, methods and apparatuses for foreign object detection (FOD) in a wireless power transfer (WPT) system. Some implementations relate generally to the use of detection coils that are excited to measure and compare a differential current through a coil pair that includes at least two detection coils. A foreign object may cause a change in impedance for one or more detection coils compared to one or more other detection coils. By detecting the differential current of the coil pair, a detection apparatus may determine that a foreign object is in proximity to one of the detection coils of the coil pair. This disclosure provides several options for the design, construction, layout, and operations of detection coils to improve foreign object detection.
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公开(公告)号：US11689056B2
公开(公告)日：2023-06-27
申请号：US16616409
申请日：2018-05-21
发明人： Suma Memana Narayana Bhat , Viswanathan Kanakasabai , Arun Kumar Raghunathan , Rahul Bhujade , Satishbabu Bhogineni , Somakumar Ramachandrapanicker
摘要： A transmitting assembly (114, 214, 334) configured to transmit electric power in a universal wireless charging device (102, 200, 302) is presented. The transmitting assembly (114, 214, 334) includes a first coil (116, 216, 316) embedded in a printed circuit board (220) and configured to transmit a first AC voltage signal having a first frequency. Also, the transmitting assembly (114, 214, 334) includes a second coil (118, 218, 318) disposed on the printed circuit board (220) and configured to transmit a second AC voltage signal having a second frequency, wherein the second frequency is different from the first frequency, and wherein the first AC voltage signal having the first frequency and the second AC voltage signal having the second frequency are used to wirelessly charge a plurality of receiver devices (104, 106) having different frequency standards.
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