WO2009155000A3 - Method and apparatus for producing substantially uniform magnetic field - Google Patents

Method and apparatus for producing substantially uniform magnetic field Download PDF

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Publication number
WO2009155000A3
WO2009155000A3 PCT/US2009/045339 US2009045339W WO2009155000A3 WO 2009155000 A3 WO2009155000 A3 WO 2009155000A3 US 2009045339 W US2009045339 W US 2009045339W WO 2009155000 A3 WO2009155000 A3 WO 2009155000A3
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic field
uniform magnetic
substantially uniform
producing substantially
wireless power
Prior art date
Application number
PCT/US2009/045339
Other languages
French (fr)
Other versions
WO2009155000A2 (en
Inventor
Jenshan Lin
Original Assignee
University Of Florida Research Foundation, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University Of Florida Research Foundation, Inc. filed Critical University Of Florida Research Foundation, Inc.
Publication of WO2009155000A2 publication Critical patent/WO2009155000A2/en
Publication of WO2009155000A3 publication Critical patent/WO2009155000A3/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/003—Printed circuit coils

Abstract

A planar wireless power transmitter coil design and method are provided. A single spiral coil can be used to provide a uniform magnetic field across its surface area for location- independent planar wireless power charging. The spiral coil can be designed to have a non- constant gap between adjacent loops such that the gap between adjacent loops decreases towards the outer loops.
PCT/US2009/045339 2008-05-27 2009-05-27 Method and apparatus for producing substantially uniform magnetic field WO2009155000A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5635408P 2008-05-27 2008-05-27
US61/056,354 2008-05-27

Publications (2)

Publication Number Publication Date
WO2009155000A2 WO2009155000A2 (en) 2009-12-23
WO2009155000A3 true WO2009155000A3 (en) 2010-03-04

Family

ID=41434641

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/045339 WO2009155000A2 (en) 2008-05-27 2009-05-27 Method and apparatus for producing substantially uniform magnetic field

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WO (1) WO2009155000A2 (en)

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US8847548B2 (en) 2008-09-27 2014-09-30 Witricity Corporation Wireless energy transfer for implantable devices
US8947186B2 (en) 2008-09-27 2015-02-03 Witricity Corporation Wireless energy transfer resonator thermal management
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US9404954B2 (en) 2012-10-19 2016-08-02 Witricity Corporation Foreign object detection in wireless energy transfer systems
US9444265B2 (en) 2005-07-12 2016-09-13 Massachusetts Institute Of Technology Wireless energy transfer
US9515494B2 (en) 2008-09-27 2016-12-06 Witricity Corporation Wireless power system including impedance matching network
US9544683B2 (en) 2008-09-27 2017-01-10 Witricity Corporation Wirelessly powered audio devices
US9602168B2 (en) 2010-08-31 2017-03-21 Witricity Corporation Communication in wireless energy transfer systems
US9601266B2 (en) 2008-09-27 2017-03-21 Witricity Corporation Multiple connected resonators with a single electronic circuit
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US8410636B2 (en) 2008-09-27 2013-04-02 Witricity Corporation Low AC resistance conductor designs
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US8901778B2 (en) 2008-09-27 2014-12-02 Witricity Corporation Wireless energy transfer with variable size resonators for implanted medical devices
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US20130062966A1 (en) 2011-09-12 2013-03-14 Witricity Corporation Reconfigurable control architectures and algorithms for electric vehicle wireless energy transfer systems
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JP2015508987A (en) 2012-01-26 2015-03-23 ワイトリシティ コーポレーションＷｉｔｒｉｃｉｔｙ Ｃｏｒｐｏｒａｔｉｏｎ Wireless energy transmission with reduced field
US9343922B2 (en) 2012-06-27 2016-05-17 Witricity Corporation Wireless energy transfer for rechargeable batteries
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US9640318B2 (en) 2013-12-07 2017-05-02 Intel Corporation Non-uniform spacing in wireless resonator coil
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US9954375B2 (en) 2014-06-20 2018-04-24 Witricity Corporation Wireless power transfer systems for surfaces
US10574091B2 (en) 2014-07-08 2020-02-25 Witricity Corporation Enclosures for high power wireless power transfer systems
US9842688B2 (en) 2014-07-08 2017-12-12 Witricity Corporation Resonator balancing in wireless power transfer systems
US9843217B2 (en) 2015-01-05 2017-12-12 Witricity Corporation Wireless energy transfer for wearables
US10248899B2 (en) 2015-10-06 2019-04-02 Witricity Corporation RFID tag and transponder detection in wireless energy transfer systems
EP3362804B1 (en) 2015-10-14 2024-01-17 WiTricity Corporation Phase and amplitude detection in wireless energy transfer systems
WO2017070227A1 (en) 2015-10-19 2017-04-27 Witricity Corporation Foreign object detection in wireless energy transfer systems
EP3365958B1 (en) 2015-10-22 2020-05-27 WiTricity Corporation Dynamic tuning in wireless energy transfer systems
US10075019B2 (en) 2015-11-20 2018-09-11 Witricity Corporation Voltage source isolation in wireless power transfer systems
US10263473B2 (en) 2016-02-02 2019-04-16 Witricity Corporation Controlling wireless power transfer systems
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US5293360A (en) * 1989-03-09 1994-03-08 Canon Kabushiki Kaisha Magnetic field generating device
KR20020007155A (en) * 2000-06-23 2002-01-26 마스다 노부유키 Power supply antenna and power supply method

Patent Citations (3)

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JPS60234304A (en) * 1984-05-07 1985-11-21 Riko Denki:Kk Spiral excitation coil for electromagnetic cooking apparatus
US5293360A (en) * 1989-03-09 1994-03-08 Canon Kabushiki Kaisha Magnetic field generating device
KR20020007155A (en) * 2000-06-23 2002-01-26 마스다 노부유키 Power supply antenna and power supply method

Non-Patent Citations (1)

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Title
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9444265B2 (en) 2005-07-12 2016-09-13 Massachusetts Institute Of Technology Wireless energy transfer
US9544683B2 (en) 2008-09-27 2017-01-10 Witricity Corporation Wirelessly powered audio devices
US8947186B2 (en) 2008-09-27 2015-02-03 Witricity Corporation Wireless energy transfer resonator thermal management
US9184595B2 (en) 2008-09-27 2015-11-10 Witricity Corporation Wireless energy transfer in lossy environments
US8847548B2 (en) 2008-09-27 2014-09-30 Witricity Corporation Wireless energy transfer for implantable devices
US9515495B2 (en) 2008-09-27 2016-12-06 Witricity Corporation Wireless energy transfer in lossy environments
US9515494B2 (en) 2008-09-27 2016-12-06 Witricity Corporation Wireless power system including impedance matching network
US9601266B2 (en) 2008-09-27 2017-03-21 Witricity Corporation Multiple connected resonators with a single electronic circuit
US9601261B2 (en) 2008-09-27 2017-03-21 Witricity Corporation Wireless energy transfer using repeater resonators
US8836172B2 (en) 2008-10-01 2014-09-16 Massachusetts Institute Of Technology Efficient near-field wireless energy transfer using adiabatic system variations
US9602168B2 (en) 2010-08-31 2017-03-21 Witricity Corporation Communication in wireless energy transfer systems
US9404954B2 (en) 2012-10-19 2016-08-02 Witricity Corporation Foreign object detection in wireless energy transfer systems
US9465064B2 (en) 2012-10-19 2016-10-11 Witricity Corporation Foreign object detection in wireless energy transfer systems

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