WO2002017008A3 - Method and apparatus for controlling an electrochromic device - Google Patents

Method and apparatus for controlling an electrochromic device Download PDF

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Publication number
WO2002017008A3
WO2002017008A3 PCT/US2001/025430 US0125430W WO0217008A3 WO 2002017008 A3 WO2002017008 A3 WO 2002017008A3 US 0125430 W US0125430 W US 0125430W WO 0217008 A3 WO0217008 A3 WO 0217008A3
Authority
WO
WIPO (PCT)
Prior art keywords
controlling
charge
voltage drop
electrochromic device
appropriate voltage
Prior art date
Application number
PCT/US2001/025430
Other languages
French (fr)
Other versions
WO2002017008A2 (en
Inventor
Phillip C Yu
David L Backfisch
Charles R Coleman
Original Assignee
Ppg Ind Ohio 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 Ppg Ind Ohio Inc filed Critical Ppg Ind Ohio Inc
Priority to AU8336501A priority Critical patent/AU8336501A/en
Priority to CA002420438A priority patent/CA2420438A1/en
Priority to EP01962166A priority patent/EP1311900A2/en
Priority to AU2001283365A priority patent/AU2001283365B2/en
Priority to BR0113562-7A priority patent/BR0113562A/en
Priority to JP2002521642A priority patent/JP2004507775A/en
Priority to MXPA03001572A priority patent/MXPA03001572A/en
Publication of WO2002017008A2 publication Critical patent/WO2002017008A2/en
Publication of WO2002017008A3 publication Critical patent/WO2002017008A3/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor

Abstract

A method and apparatus for controlling a charge/discharge voltage applied to an EC device to ensure that an appropriate voltage drop across the EC device is maintained during charge and/or discharge modes of operation. The appropriate voltage drop is determined with respect to a temperature measurement proximate the EC device. The charge level of the device is monitored using a coulomb counter circuit having a topology designed to minimize interference in the operation of the EC device.
PCT/US2001/025430 2000-08-23 2001-08-14 Method and apparatus for controlling an electrochromic device WO2002017008A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AU8336501A AU8336501A (en) 2000-08-23 2001-08-14 Method and apparatus for controlling an electrochromic device
CA002420438A CA2420438A1 (en) 2000-08-23 2001-08-14 Method and apparatus for controlling an electrochromic device
EP01962166A EP1311900A2 (en) 2000-08-23 2001-08-14 Method and apparatus for controlling an electrochromic device
AU2001283365A AU2001283365B2 (en) 2000-08-23 2001-08-14 Method and apparatus for controlling an electrochromic device
BR0113562-7A BR0113562A (en) 2000-08-23 2001-08-14 Apparatus and method for controlling the charge condition of an electrochromic device, apparatus for controlling the charge condition of an electrochromic material in an eyepiece device, method for maintaining a charge supplied to an electrochromic device, and method for adapting the charge level of an electro-optical device
JP2002521642A JP2004507775A (en) 2000-08-23 2001-08-14 Method and apparatus for controlling an electrochromic device
MXPA03001572A MXPA03001572A (en) 2000-08-23 2001-08-14 Method and apparatus for controlling an electrochromic device.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/644,355 2000-08-23
US09/644,355 US6614577B1 (en) 2000-08-23 2000-08-23 Method and apparatus for controlling an electrochromic device

Publications (2)

Publication Number Publication Date
WO2002017008A2 WO2002017008A2 (en) 2002-02-28
WO2002017008A3 true WO2002017008A3 (en) 2002-10-10

Family

ID=24584535

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/025430 WO2002017008A2 (en) 2000-08-23 2001-08-14 Method and apparatus for controlling an electrochromic device

Country Status (9)

Country Link
US (2) US6614577B1 (en)
EP (1) EP1311900A2 (en)
JP (1) JP2004507775A (en)
AR (1) AR033995A1 (en)
AU (2) AU8336501A (en)
BR (1) BR0113562A (en)
CA (1) CA2420438A1 (en)
MX (1) MXPA03001572A (en)
WO (1) WO2002017008A2 (en)

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Also Published As

Publication number Publication date
AU2001283365B2 (en) 2004-12-23
MXPA03001572A (en) 2003-06-04
US6614577B1 (en) 2003-09-02
EP1311900A2 (en) 2003-05-21
US20030210450A1 (en) 2003-11-13
AR033995A1 (en) 2004-01-21
AU8336501A (en) 2002-03-04
BR0113562A (en) 2004-06-08
JP2004507775A (en) 2004-03-11
CA2420438A1 (en) 2002-02-28
WO2002017008A2 (en) 2002-02-28

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