Method and apparatus for controlling an electrochromic device

G - Physics – 02 – F

Patent

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G02F 1/163 (2006.01)

Patent

CA 2420438

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.

L'invention concerne un procédé et un appareil permettant de commander une tension de charge/décharge appliquée à un dispositif électrochimique afin de s'assurer qu'une chute de tension appropriée est maintenue dans le dispositif électrochimique pendant le mode de fonctionnement de charge et/ou de décharge. La chute de tension appropriée est déterminée par rapport à une mesure de la température effectuée dans l'environnement immédiat du dispositif électrochimique. Le niveau de charge du dispositif est surveillé à l'aide d'un circuit de compteur de Coulomb présentant une topologie conçue afin de réduire au minimum les interférences durant le fonctionnement du dispositif électrochimique.

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