Electric double layer capacitor
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsAkihiko Yoshida, Ichiro Aoki, Seiji Nonaka, Kiyoaki Imoto
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Abstract
An electric double layer capacitor having a rectangular cross-section for an excellent volumetric efficiency and a low internal resistance is disclosed. The capacitor comprises a plurality of sheet-like current collectors in one polarity and in the other polarity; the surfaces of the both collectors are formed into polarizable electrodes composed mainly of activated carbon with a binder; a plurality of separators interposed between the current collectors of the one polarity and those of the other polarity.
Claims7
An electric double layer capacitor comprising:
- a plurality of sheet-like current collectors whose surfaces are formed into polarizable electrodes composed mainly of activated carbon with a binder;
- a plurality of separators interposed between the plurality of sheet-like current collectors, which together with the sheet-like current collectors form a laminated body;
- an electrolyte which is in contact with the polarizable electrodes;
- an exterior component having a rectangular cross-section which accommodates the laminated body, the exterior component including a one-piece member provided along one side of the laminated body, the one-piece member having grooves defined therein to receive peripheral edge portions of the sheet like current reflector therein;
- a first lead conductor which is electrically connected to the current collector positioned at one end of the laminated body;
- and
- a second lead conductor which is electrically connected to the current collector positioned at another end of the laminated body.
An electric double layer capacitor comprising:
- a plurality of sheet-like current collectors whose surfaces are formed into polarizable electrodes composed mainly of activated carbon with a binder;
- a plurality of separators interposed between the plurality of sheet-like current collectors, to form a laminated body;
- an electrolyte which is in contact with the polarizable electrodes;
- an exterior component having a rectangular cross-section which accommodates the laminated body;
- a first lead conductor which is electrically connected to the current collector positioned at one end of the laminated body, wherein each of the peripheral edge portions of the current collectors is fitted in a groove provided on an inner face of the exterior component and sealed thereto in a liquid-tight fashion via an adhesive;
- and
- a second lead conductor which is electrically connected to the current collector positioned at the other end of the laminated body.
Dependencies are inferred from the claim text.