Wound electric double-layer capacitor

Details Wound electric double-layer capacitor Wound electric double-layer capacitor

2011-02-01

2011-02-01

Ha, Nguyen T (Department: 2835)

Electricity: electrical systems and devices

Electrolytic systems or devices

Double layer electrolytic capacitor

C361S503000, C361S504000, C361S508000, C361S512000, C361S523000

Reexamination Certificate

active

07881043

ABSTRACT:
A wound electric double-layer capacitor suppresses electrochemical reaction on polarized electrode layers, reduces characteristic degradation, and has high reliability. The capacitor has a capacitor element formed by winding positive and negative electrodes with a separator interposed between them, a metal case for storing the capacitor element and an electrolyte for driving, and a sealing member for sealing an opening of the metal case. In the positive and negative electrodes, positive and negative electrode lead wires are coupled to exposed parts of current collectors having polarized electrode layers on their both surfaces, respectively. The negative electrode is wound at least one extra turn from the winding end of the positive electrode of the capacitor element, and hence a part where the polarized electrode layers formed in the negative electrode face each other through the separator is formed on the outermost periphery of the capacitor element.

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International Search Report issued Feb. 27, 2007 in the International (PCT) Application of which the present application is the U.S. National Stage.
International Search Report issued in International (PCT) Application No., dated Feb. 27, 2007.
Partial English Translation of JP 2001-237150 having a publication date of Aug. 31, 2001, pp. 1-3.

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