An electrolytic capacitor includes an anode body having a dielectric layer, and a solid electrolyte layer including a conductive polymer. The solid electrolyte layer includes the conductive polymer, an anion, and a cation. The anion is an anion corresponding to at least one acid selected from the group consisting of a phosphorus-containing oxoacid, sulfuric acid, and a carboxylic acid. The cation is a nitrogen-containing cation.

An improved capacitor is provided. The capacitor comprises a working element wherein the working element comprises an anode comprising a first dielectric on the anode, a cathode and a conductive separator between the first dielectric and cathode. The conductive separator comprises a separator and a first conductive polymer wherein the first conductive polymer at least partially encapsulates the separator. A second conductive polymer at least partially encapsulates the first conductive polymer and wherein the first conductive polymer has a higher conductivity than the second conductive polymer. An anode lead is in electrical contact with the anode and a cathode lead is in electrical contact with the cathode.

The purpose of the present invention is to provide a separator for an aluminum electrolytic capacitor and an aluminum electrolytic capacitor, with which it is possible to increase the uniformity of conductive polymers in solid electrolytic capacitors and hybrid electrolytic capacitors, and to achieve a further decrease in the ESR of the capacitor. The purpose is achieved by means of the following configurations: a separator for an aluminum electrolytic capacitor, the separator being interposed between a pair of electrodes and characterized in that the bottom surface of an element obtained by winding the pair of electrodes with the separator interposed therebetween is dipped in an electrolytic solution for an impregnating rate of not more than 50 seconds; or an aluminum electrolytic capacitor including a pair of electrodes and the separator interposed between the pair of electrodes, characterized in that the separator is as noted above, or characterized in that a conductive polymer is used as the cathode material for the pair of electrodes.

A winding-type capacitor package structure and a method of manufacturing the same are provided. The winding-type capacitor package structure includes a winding assembly, a package assembly, a conductive assembly, and a bottom carrier frame. The winding assembly includes a positive winding conductive foil and a negative winding conductive foil. The winding assembly is enclosed by the package assembly. The package assembly includes a casing structure and a filling body received inside the casing structure. The casing structure has an inner rough surface. The bottom carrier frame is disposed on a bottom portion of the casing structure. The filling body includes a plurality of layered structures, and each of the layered structure is connected between the winding assembly and the casing structure. Therefore, the filling body including the layered structures can be limited inside the casing structure through friction force provided by the inner rough surface.

A winding capacitor package structure and a method of manufactured the same are provided. The winding capacitor package structure includes a winding assembly, a package assembly, a conductive assembly, and a bottom carrier frame. The winding assembly includes a winding positive foil and a winding negative foil. The winding assembly is enclosed by the package assembly. The package assembly includes a casing structure and a filling body received inside the casing structure. The casing structure includes a main casing for enclosing the filling body and a retaining body inwardly bent from a bottom side of the main casing. The filling body includes a plurality of layered structures, and each of the layered structure is connected between the winding assembly and the casing structure. Therefore, the filling body including the layered structures can be retained and limited inside the casing structure through the retaining body.

The object of the invention is an electrical assembly, in particular a capacitive block, comprising a capacitive element, at least one electric connector secured to said capacitive element and a casing having a bottom, a side wall and an aperture through which the capacitive element is inserted, said casing comprising at least one shoulder on the side of the aperture, said shoulder forming a stop configured to receive in abutment said at least one electric connector, so as to support said capacitive element.

An electrolytic capacitor includes a capacitor element, a solid electrolyte layer, an electrolyte solution. The capacitor element has an anode foil with a dielectric layer, and a cathode foil. The solid electrolyte layer is provided between the anode foil and the cathode foil. And the capacitor element is impregnated with the electrolyte solution. The cathode foil includes a covering layer that contains at least one metal selected from titanium and nickel or a compound of the at least one metal. And the solid electrolyte layer contains a conductive polymer, a polymer dopant, and a base component.

An electrolytic capacitor includes a capacitor element and an electrolytic solution. The capacitor element includes an anode body with an oxide film, and a solid electrolyte in contact with the oxide film. The electrolytic solution contains a solvent and a solute. The solvent contains at least one selected from the group consisting of a lactone compound, a glycol compound, and a sulfone compound. The solute includes a first acid component and a base component. The first acid component includes at least one of a benzenedicarboxylic acid and a derivative of the benzenedicarboxylic acid. The base component includes at least one of an amine and an amidine. A concentration of the solute in the electrolytic solution ranges from 15% by mass to 40% by mass, inclusive. A ratio (V/Vw) of a formation voltage V of the oxide film to a rated voltage Vw of the electrolytic capacitor is less than or equal to 1.7.

Provided is an electrolytic capacitor that can reliably exhibit redox capacity due to a conductive polymer layer of a cathode. The electrolytic capacitor includes: a cathode having a conductive substrate and a conductive polymer layer placed on the surface of the conductive substrate; an anode having a substrate composed of a valve metal and a dielectric layer composed of an oxide of the valve metal that is placed on the surface of the substrate, the anode being disposed such that the dielectric layer and the conductive polymer layer of the cathode are opposed to each other across a space; and an ion conductive electrolyte with which the space is filled, the conductive polymer layer of the cathode that is in contact with the ion conductive electrolyte exhibiting a redox capacity due to application of a voltage between the anode and the cathode, wherein the contact resistance between the conductive substrate and the conductive polymer layer in the cathode is 1 Ωcm.sup.2 or less.

A disclosed electrolytic capacitor includes a capacitor element, and a liquid component. The capacitor element includes an anode body having a dielectric layer at a surface of the anode body, and a conductive polymer compound covering at least part of the dielectric layer. The liquid component contains an acid component, a base component, and a solvent. The solvent includes an organic compound having a hydroxy group, and the acid component includes an organic carboxylic acid compound. The base component includes at least one selected from the group consisting of a primary amine compound and a secondary amine compound.