WO2009126963A3 - Power control duty cycle throttling scheme for planar wireless power transmission system - Google Patents

Power control duty cycle throttling scheme for planar wireless power transmission system Download PDF

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Publication number
WO2009126963A3
WO2009126963A3 PCT/US2009/040385 US2009040385W WO2009126963A3 WO 2009126963 A3 WO2009126963 A3 WO 2009126963A3 US 2009040385 W US2009040385 W US 2009040385W WO 2009126963 A3 WO2009126963 A3 WO 2009126963A3
Authority
WO
WIPO (PCT)
Prior art keywords
power
duty cycle
transmitter
transmission system
power control
Prior art date
Application number
PCT/US2009/040385
Other languages
French (fr)
Other versions
WO2009126963A2 (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 WO2009126963A2 publication Critical patent/WO2009126963A2/en
Publication of WO2009126963A3 publication Critical patent/WO2009126963A3/en

Links

Classifications

    • H04B5/48—
    • 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
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or 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
    • 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
    • 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
    • H04B5/24—
    • H04B5/79—

Abstract

Embodiments of a power transmission system and power control scheme are provided. The power control scheme utilizes the power requirements for each receiver of a device on a charging pad for highly efficient charging of multiple devices. According to an embodiment, each receiver transmits its power requirement to the transmitter, and based on this power requirement, the most power hungry device is used to set the duty cycle of the transmitter. Each individual receiver can continue to monitor its power requirement and make necessary adjustments to ensure efficient power transfer. Once all the devices are fully charged, the transmitter can be powered off or have its duty cycle reduced to performance trickle charging. The transmitter can continue to access the load conditions while in standby to detect any new device being placed on the charging pad.
PCT/US2009/040385 2008-04-11 2009-04-13 Power control duty cycle throttling scheme for planar wireless power transmission system WO2009126963A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4432708P 2008-04-11 2008-04-11
US61/044,327 2008-04-11

Publications (2)

Publication Number Publication Date
WO2009126963A2 WO2009126963A2 (en) 2009-10-15
WO2009126963A3 true WO2009126963A3 (en) 2010-01-21

Family

ID=41162682

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/040385 WO2009126963A2 (en) 2008-04-11 2009-04-13 Power control duty cycle throttling scheme for planar wireless power transmission system

Country Status (1)

Country Link
WO (1) WO2009126963A2 (en)

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