Patent ID: 6414838
Filing Date: 2002-07-02
Classification: H01G,Y02E

Abstract:
A cylindrical electric double-layer capacitor comprising an electrode winding which is formed by superposing band-shaped positive and negative electrodes one on another with a first separator interposed therebetween, superposing a second separator onto one of said band-shaped positive and negative electrodes to provide a superposed material, and by spirally winding the superposed material such that said second separator is located on an outermost side, and a container having said electrode winding accommodated therein, wherein a cylindrical electrode is provided on an inner peripheral surface of said container opposed to an outer peripheral surface of said electrode winding, the polarity of said cylindrical electrode being set at a polarity opposite from the polarity of that portion of said one of said band-shaped positive and negative electrodes, which is located on an outermost periphery of said electrode winding.