Electrical energy storage device and method of charging and...

H - Electricity – 01 – G

Patent

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Details

H01G 17/00 (2006.01) H01G 9/00 (2006.01) H01M 10/42 (2006.01) H01M 10/30 (2006.01)

Patent

CA 2156638

Briefly, according to the invention, there is provided an energy storage device (5) with three electrodes. A first electrolyte (15) is situated between the first (10) and second (20) electrodes so that it is in contact with each of the electrodes, forming a battery cell (80). A second electrolyte (25) is placed between the second (20) and third (30) electrodes so that it is also in contact with each electrode, forming an electrochemical capacitor (70). The battery and capacitor each share a common electrode (20). After charging, the energy storage device can be linked to an electrical device to power it by discharging the battery portion to provide a substantially constant voltage, and discharging the capacitor portion to provide a substantially constant current when the device requires higher levels of current than the battery portion is capable of providing.

L'invention concerne un dispositif (5) d'accumulation d'énergie pourvu de trois électrodes. Un premier électrolyte (15) se trouve entre la première (10) et la seconde électrodes (20), de sorte qu'il soit en contact avec chacune d'elles pour former un élément (80) de batterie. Un second électrolyte (25) est placé entre la seconde (20) et la troisième électrodes (30), de sorte qu'il soit également en contact avec chaque électrode, pour former un condensateur électrochimique (70). La batterie et le condensateur partagent chacun une électrode commune (20). Après avoir été chargé, le dispositif d'accumulation d'énergie peut être connecté à un dispositif électrique pour l'alimenter en courant par décharge de la portion de batterie de manière à produire une tension sensiblement constante, et par décharge de la portion de condensateur de manière à assurer une intensité de courant sensiblement constante, lorsque le dispositif nécessite une intensité de courant supérieure à celle que peut fournir la portion de batterie.

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