WO2009033043A3 - Planar near-field wireless power charger and high-speed data communication platform - Google Patents

Planar near-field wireless power charger and high-speed data communication platform Download PDF

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Publication number
WO2009033043A3
WO2009033043A3 PCT/US2008/075429 US2008075429W WO2009033043A3 WO 2009033043 A3 WO2009033043 A3 WO 2009033043A3 US 2008075429 W US2008075429 W US 2008075429W WO 2009033043 A3 WO2009033043 A3 WO 2009033043A3
Authority
WO
WIPO (PCT)
Prior art keywords
coils
charging
receiver coil
pad
magnetic fields
Prior art date
Application number
PCT/US2008/075429
Other languages
French (fr)
Other versions
WO2009033043A2 (en
Inventor
Zhen Ning Low
Jenshan Lin
Mingqi Chen
Original Assignee
Univ Florida
Zhen Ning Low
Jenshan Lin
Mingqi Chen
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 Univ Florida, Zhen Ning Low, Jenshan Lin, Mingqi Chen filed Critical Univ Florida
Publication of WO2009033043A2 publication Critical patent/WO2009033043A2/en
Publication of WO2009033043A3 publication Critical patent/WO2009033043A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive loop type
    • H04B5/26—
    • H04B5/79—

Abstract

In one aspect, the present disclosure describes a planar near-field wireless power charging system that is capable of charging small portable devices. Embodiments can incorporate coils for generating time-varying magnetic fields into a pad. In an exemplary embodiment, the charging system incorporates a charging pad that can act as an electrically small coil antenna for the low frequencies and long wavelengths, used for charging, and long wavelengths, and which can also be used for communication purposes by treating it as an electrically large antenna at higher frequencies, and shorter wavelengths, used for communications. In an exemplary embodiment, the system uses multiple lower powered transmitters, where each transmitter feeds a separate coil. The separate coils can be stacked so that the magnetic fields are substantially coextensive. The simultaneous driving of the multiple coils by the multiple transmitters can achieve similar power delivery as a single high powered transmitter. Multiple stacked sets of coils can be integrated into a pad such that each stacked set of coils provides vertical magnetic fields over a section of the pad. Embodiments of the subject invention can be designed to couple energy to the receiver coil of the device via magnetic fields that have a substantial vertical component. An embodiment of the present disclosure describes a receiver coil attached to a portable electronic device with a mechanical connection that allows the receiver coil to be positioned such that the vertical fields do not need to pass through a substantial portion of the device to pass through the receiver coil during charging and can allow the receiver coil to be conveniently positioned adjacent the device when not changing.
PCT/US2008/075429 2007-09-05 2008-09-05 Planar near-field wireless power charger and high-speed data communication platform WO2009033043A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US97020107P 2007-09-05 2007-09-05
US60/970,201 2007-09-05

Publications (2)

Publication Number Publication Date
WO2009033043A2 WO2009033043A2 (en) 2009-03-12
WO2009033043A3 true WO2009033043A3 (en) 2009-04-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/075429 WO2009033043A2 (en) 2007-09-05 2008-09-05 Planar near-field wireless power charger and high-speed data communication platform

Country Status (1)

Country Link
WO (1) WO2009033043A2 (en)

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US8946938B2 (en) 2008-09-27 2015-02-03 Witricity Corporation Safety systems for wireless energy transfer in vehicle applications
US8922066B2 (en) 2008-09-27 2014-12-30 Witricity Corporation Wireless energy transfer with multi resonator arrays for vehicle applications
US9318922B2 (en) 2008-09-27 2016-04-19 Witricity Corporation Mechanically removable wireless power vehicle seat assembly
US8963488B2 (en) 2008-09-27 2015-02-24 Witricity Corporation Position insensitive wireless charging
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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
US8912687B2 (en) 2008-09-27 2014-12-16 Witricity Corporation Secure wireless energy transfer for vehicle applications
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US9246336B2 (en) 2008-09-27 2016-01-26 Witricity Corporation Resonator optimizations for wireless energy transfer
US8466583B2 (en) 2008-09-27 2013-06-18 Witricity Corporation Tunable wireless energy transfer for outdoor lighting applications
US8362651B2 (en) 2008-10-01 2013-01-29 Massachusetts Institute Of Technology Efficient near-field wireless energy transfer using adiabatic system variations
US8301077B2 (en) * 2009-09-24 2012-10-30 ConvenientPower, Ltd Antenna network for passive and active signal enhancement
US8294418B2 (en) 2010-02-03 2012-10-23 ConvenientPower, Ltd. Power transfer device and method
US9602168B2 (en) 2010-08-31 2017-03-21 Witricity Corporation Communication in wireless energy transfer systems
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US9948145B2 (en) 2011-07-08 2018-04-17 Witricity Corporation Wireless power transfer for a seat-vest-helmet system
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US9318257B2 (en) 2011-10-18 2016-04-19 Witricity Corporation Wireless energy transfer for packaging
EP2807720A4 (en) 2012-01-26 2015-12-02 Witricity Corp Wireless energy transfer with reduced fields
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9450421B2 (en) 2005-07-12 2016-09-20 Massachusetts Institute Of Technology Wireless non-radiative energy transfer
US9450422B2 (en) 2005-07-12 2016-09-20 Massachusetts Institute Of Technology Wireless energy transfer
US8692412B2 (en) 2008-09-27 2014-04-08 Witricity Corporation Temperature compensation in a wireless transfer system
US8692410B2 (en) 2008-09-27 2014-04-08 Witricity Corporation Wireless energy transfer with frequency hopping
US9396867B2 (en) 2008-09-27 2016-07-19 Witricity Corporation Integrated resonator-shield structures
US9496719B2 (en) 2008-09-27 2016-11-15 Witricity Corporation Wireless energy transfer for implantable devices
US9601270B2 (en) 2008-09-27 2017-03-21 Witricity Corporation Low AC resistance conductor designs
US8875086B2 (en) 2011-11-04 2014-10-28 Witricity Corporation Wireless energy transfer modeling tool
US9404954B2 (en) 2012-10-19 2016-08-02 Witricity Corporation Foreign object detection in wireless energy transfer systems
US9449757B2 (en) 2012-11-16 2016-09-20 Witricity Corporation Systems and methods for wireless power system with improved performance and/or ease of use

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