WO2009070730A3 - Method and apparatus for high efficiency scalable near-field wireless power transfer - Google Patents

Method and apparatus for high efficiency scalable near-field wireless power transfer Download PDF

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Publication number
WO2009070730A3
WO2009070730A3 PCT/US2008/084970 US2008084970W WO2009070730A3 WO 2009070730 A3 WO2009070730 A3 WO 2009070730A3 US 2008084970 W US2008084970 W US 2008084970W WO 2009070730 A3 WO2009070730 A3 WO 2009070730A3
Authority
WO
WIPO (PCT)
Prior art keywords
wireless power
power transfer
high efficiency
supply voltage
field wireless
Prior art date
Application number
PCT/US2008/084970
Other languages
French (fr)
Other versions
WO2009070730A2 (en
Inventor
Zhen Ning Low
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 WO2009070730A2 publication Critical patent/WO2009070730A2/en
Publication of WO2009070730A3 publication Critical patent/WO2009070730A3/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge

Abstract

Wireless power transfer systems are provided. A wireless power transmitter can include a transistor block providing a switching mode amplifier, and a low-Q output network including a tunable supply voltage. The transistor block can be scalable. Multiple scalable transistor blocks can be incorporated in a power transfer system using a single tunable supply voltage and transmitting coil. The tunable supply voltage can be controlled by an adaptive power supply tuning circuit to accommodate for a range of loading conditions. Embodiments of the subject invention are capable of achieving high efficiency across a wide range of output power levels.
PCT/US2008/084970 2007-11-27 2008-11-26 Method and apparatus for high efficiency scalable near-field wireless power transfer WO2009070730A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US99037707P 2007-11-27 2007-11-27
US60/990,377 2007-11-27

Publications (2)

Publication Number Publication Date
WO2009070730A2 WO2009070730A2 (en) 2009-06-04
WO2009070730A3 true WO2009070730A3 (en) 2009-08-27

Family

ID=40679221

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/084970 WO2009070730A2 (en) 2007-11-27 2008-11-26 Method and apparatus for high efficiency scalable near-field wireless power transfer

Country Status (1)

Country Link
WO (1) WO2009070730A2 (en)

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US9450421B2 (en) 2005-07-12 2016-09-20 Massachusetts Institute Of Technology Wireless non-radiative energy transfer
US9544683B2 (en) 2008-09-27 2017-01-10 Witricity Corporation Wirelessly powered audio devices

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US9544683B2 (en) 2008-09-27 2017-01-10 Witricity Corporation Wirelessly powered audio devices

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