Basic cell for an electric double layer capacitor
First Claim
1. In a basic cell for an electric double layer capacitor, said basic cell having a first sheet collector, a first polarizing electrode including a plurality of chip electrodes arranged on said first sheet collector, an insulating separator covering said chip electrodes, a second polarizing electrode including a plurality of chip electrodes arranged on said insulating separator in opposed relationship with the plurality of chip electrodes of said first polarizing electrode, and a second sheet collector disposed on said second polarizing electrode, the improvement comprising an arrangement of said chip electrodes in each of said first and second polarizing electrodes such that said chip electrodes are electrically connected together by a direct contact between each adjacent two of said chip electrodes.
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Accused Products
Abstract
A basic cell for an electric double layer capacitor has a pair of polarizing electrodes each including a plurality of chip electrodes arranged in matrix or honeycomb pattern. The plurality of chip electrodes are electrically connected by direct contact between each adjacent two chip electrodes for increasing the capacitance and decreasing the internal resistance. Excellent charging or discharging characteristic can be obtained even if the sheet collectors for providing charging or discharging current for the chip electrodes have different specific resistivities along the surface of the sheet collectors. The chip electrodes may be of a truncated pyramid shape for improving resistance against distorting or bending stress applied to the basic cell.
41 Citations
25 Claims
- 1. In a basic cell for an electric double layer capacitor, said basic cell having a first sheet collector, a first polarizing electrode including a plurality of chip electrodes arranged on said first sheet collector, an insulating separator covering said chip electrodes, a second polarizing electrode including a plurality of chip electrodes arranged on said insulating separator in opposed relationship with the plurality of chip electrodes of said first polarizing electrode, and a second sheet collector disposed on said second polarizing electrode, the improvement comprising an arrangement of said chip electrodes in each of said first and second polarizing electrodes such that said chip electrodes are electrically connected together by a direct contact between each adjacent two of said chip electrodes.
- 8. In a basic cell for an electric double layer capacitor, said basic cell having a first sheet collector, a first polarizing electrode including a plurality of chip electrodes arranged on said first sheet collector, an insulating separator covering said chip electrodes, a second polarizing electrode including a plurality of chip electrodes arranged on said insulating separator in opposed relationship with the plurality of chip electrodes of said first polarizing electrode, and a second sheet collector disposed on said second polarizing electrode, the improvement comprising an arrangement of said chip electrodes in each of said first and second polarizing electrodes such that said chip electrodes are electrically connected together by a direct contact between each adjacent two of said chip electrodes, wherein the improvement further comprises each of said chip electrodes is of a truncated pyramid shape having a top surface in contact with said separator and a bottom surface in contact with one of said first and second sheet collectors, wherein said direct contact is effected by a contact between bottom surfaces of said each adjacent two of said chip electrodes at the peripheries of the bottom surfaces.
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10. A double layer capacitor comprising at least one basic cell, wherein said at least one basic cell comprises:
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a first sheet collector; and a first polarizing electrode which includes a first plurality of chip electrodes that are arranged on said first sheet collector such that said chip electrodes are electrically connected together by a direct contact between each adjacent two of said chip electrodes, wherein said chip electrodes are comprised of substantially the same material. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification