Electrolytic capacitor
AssigneeSanyo Electric Co., Ltd.
InventorHideki Ishida
Life of this patent
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Abstract
An electrolytic capacitor comprises a wound body including a wound anode foil with a surface on which a dielectric layer is formed, a solid electrolyte layer formed on a surface of the dielectric layer, a cathode layer formed on a surface of the solid electrolyte layer over the outer circumference of the wound body, a plurality of anode leads electrically connected to the anode foil, and a plurality of cathode leads provided in one-to-one relationship with the anode leads and electrically connected to the cathode layer. The edge surface is a part of the surface of the wound body and crosses the winding axis of the wound body. Each of the cathode leads is electrically connected to an outer circumference of the cathode layer at a position near an anode lead corresponding to this cathode lead.
Claims11
An electrolytic capacitor, comprising:
- a wound body including a wound anode foil with a surface on which a dielectric layer is formed;
- an electrolyte layer formed inside the wound body and over the outer circumference of the wound body;
- a cathode layer formed on a surface of the electrolyte layer over the outer circumference of the wound body;
- a plurality of anode leads electrically connected to the anode foil;
- and a plurality of cathode leads provided in one-to-one relationship with the anode leads and electrically connected to the cathode layer,
- each of the anode leads being pulled out through an edge surface of the wound body, each of the cathode leads being electrically connected to the outer circumference of the cathode layer at a position near an anode lead corresponding to this cathode lead.
An electrolytic capacitor, comprising:
- a plurality of wound elements each having a wound body including a wound anode foil with a surface on which a dielectric layer is formed, an electrolyte layer formed inside the wound body and over the outer circumference of the wound body, a cathode layer formed on a surface of the electrolyte layer over the outer circumference of the wound body, and an anode lead electrically connected to the anode foil and pulled out through an edge surface of the wound body;
- a bottomed cylindrical conductive case housing the wound elements;
- and
- a plurality of cathode leads provided in one-to-one relationship with the wound elements, the cathode leads being electrically connected to conducting part of the conductive case,
- each of the wound elements being arranged near the inner circumference of the conductive case, each of the cathode leads being placed at a position near a wound element corresponding to this cathode lead,
- the conducting part of the conductive case being exposed at least at the inner circumference of the conductive case, a conductive member electrically connecting the conducting part of the conductive case and the cathode layer being placed between the inner circumference of the conductive case and the outer circumference of the cathode layer of each of the wound elements and at least at a position near the anode lead of this wound element.
Dependencies are inferred from the claim text.