Film capacitor and method of making the same
First Claim
1. A method of making a film capacitor which method comprises the steps of:
- preparing a laminated or coiled body comprising a plurality of electrodes and at least one layer of dielectric made of organic material and interposed between each neighboring electrode;
impregnating the laminated or coiled body with an organic material so as to fill up a gap which is defined between each electrode and the associated dielectric member or between the neighboring dielectric members with an impregnated member;
causing opposite end faces of the coiled or laminated body at which end edges of said electrodes are present to contact a gaseous material containing organic material and a reactive component, to selectively remove respective portions of the dielectric members and the impregnated members which are aligned with each of the opposite end faces; and
forming end electrodes on said end faces.
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Accused Products
Abstract
A film capacitor which has a plurality of electrodes; at least one layer of dielectric member made of organic material and interposed between each pair of neighboring electrodes; impreganated members made of organic material and disposed in a gap between the electrode and the dielectric layer or between the dielectric layers; and end electrodes applied respectively to opposite electrode drawout end faces and connected alternately with the electrodes. The dielectric layers and the impregnated members alternate with each other and have respective end faces. The end portions of the dielectric layers and impregnated members are indented to provide respective indented end face.
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Citations
12 Claims
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1. A method of making a film capacitor which method comprises the steps of:
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preparing a laminated or coiled body comprising a plurality of electrodes and at least one layer of dielectric made of organic material and interposed between each neighboring electrode; impregnating the laminated or coiled body with an organic material so as to fill up a gap which is defined between each electrode and the associated dielectric member or between the neighboring dielectric members with an impregnated member; causing opposite end faces of the coiled or laminated body at which end edges of said electrodes are present to contact a gaseous material containing organic material and a reactive component, to selectively remove respective portions of the dielectric members and the impregnated members which are aligned with each of the opposite end faces; and forming end electrodes on said end faces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A film capacitor which comprises:
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a plurality of electrodes having end edges; at least one layer of dielectric made of organic material and interposed between each pair of neighboring electrodes; impregnated members made of organic material and disposed in a gap between an electrode and a dielectric layer or between dielectric layers; said dielectric layers and said impregnated members alternating with each other between electrodes and having respective end faces, the end portions of said dielectric layers and impregnated members being indented from the end edges of said electrodes to provide respective indentations with opposed electrode surfaces which are free of dielectric and impregnated members; and end electrodes applied to the respective opposite end faces of said film capacitor and electrically contacting said end edges of said electrodes and said opposed electrode surfaces. - View Dependent Claims (11, 12)
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Specification