WO2007019806A8 - Auxiliary winding for improved performance of a planar inductive charging platform - Google Patents

Auxiliary winding for improved performance of a planar inductive charging platform

Info

Publication number
WO2007019806A8
WO2007019806A8 PCT/CN2006/002100 CN2006002100W WO2007019806A8 WO 2007019806 A8 WO2007019806 A8 WO 2007019806A8 CN 2006002100 W CN2006002100 W CN 2006002100W WO 2007019806 A8 WO2007019806 A8 WO 2007019806A8
Authority
WO
WIPO (PCT)
Prior art keywords
winding
inductive charging
improved performance
auxiliary winding
charging platform
Prior art date
Application number
PCT/CN2006/002100
Other languages
French (fr)
Other versions
WO2007019806A1 (en
Inventor
Shu-Yuen Ron Hui
Xun Liu
Original Assignee
Univ City Hong Kong
Shu-Yuen Ron Hui
Xun Liu
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 City Hong Kong, Shu-Yuen Ron Hui, Xun Liu filed Critical Univ City Hong Kong
Priority to US12/063,986 priority Critical patent/US8040103B2/en
Priority to EP06775418.4A priority patent/EP1915809B1/en
Priority to CN2006800301623A priority patent/CN101243593B/en
Publication of WO2007019806A1 publication Critical patent/WO2007019806A1/en
Publication of WO2007019806A8 publication Critical patent/WO2007019806A8/en

Links

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
    • 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
    • H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting 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
    • H02J50/10—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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/025—
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2804—Printed windings

Abstract

A battery charging apparatus comprises an inductive charging platform including a charging surface on which an electrical device to be charged is to be placed, and a first winding for generating lines of magnetic flux generally perpendicular to the charging surface. To compensate for voltage sag caused by a reduction in the flux generated by the first winding, a second winding is located within an area defined by the first winding for generating an auxiliary magnetic flux generally perpendicular to the charging surface.
PCT/CN2006/002100 2005-08-19 2006-08-18 Auxiliary winding for improved performance of a planar inductive charging platform WO2007019806A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/063,986 US8040103B2 (en) 2005-08-19 2006-08-18 Battery charging apparatus with planar inductive charging platform
EP06775418.4A EP1915809B1 (en) 2005-08-19 2006-08-18 Auxiliary winding for improved performance of a planar inductive charging platform
CN2006800301623A CN101243593B (en) 2005-08-19 2006-08-18 Auxiliary winding for improved performance of a planar inductive charging platform

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0517082.4A GB0517082D0 (en) 2005-08-19 2005-08-19 Auxiliary winding for improved performance of a planar inductive charging platform
GB0517082.4 2005-08-19

Publications (2)

Publication Number Publication Date
WO2007019806A1 WO2007019806A1 (en) 2007-02-22
WO2007019806A8 true WO2007019806A8 (en) 2008-04-03

Family

ID=35098004

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/002100 WO2007019806A1 (en) 2005-08-19 2006-08-18 Auxiliary winding for improved performance of a planar inductive charging platform

Country Status (5)

Country Link
US (1) US8040103B2 (en)
EP (1) EP1915809B1 (en)
CN (1) CN101243593B (en)
GB (2) GB0517082D0 (en)
WO (1) WO2007019806A1 (en)

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US8901880B2 (en) * 2008-08-19 2014-12-02 Qualcomm Incorporated Wireless power transmission for portable wireless power charging
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CN104701995B (en) * 2013-12-07 2019-03-29 英特尔公司 Non-homogeneous spacing in wireless resonant device coil
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Also Published As

Publication number Publication date
US20080278112A1 (en) 2008-11-13
CN101243593A (en) 2008-08-13
GB0517082D0 (en) 2005-09-28
EP1915809A1 (en) 2008-04-30
EP1915809B1 (en) 2014-07-09
WO2007019806A1 (en) 2007-02-22
US8040103B2 (en) 2011-10-18
EP1915809A4 (en) 2011-12-21
GB2434042A (en) 2007-07-11
CN101243593B (en) 2011-06-29
GB0616502D0 (en) 2006-09-27

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