An external terminal for an electric energy storage device, which is coupled to an upper end of a cylindrical metal case to cap the metal case and has a hollow formed at a center thereof so that a safety valve is installed therein, wherein the metal case includes an outer part exposed to the outside in an erect state in a normal direction and an inner part positioned below the outer part, and wherein the inner part includes a first surface adjacent to the hollow and a second surface stepped higher than the first surface (112a) toward the outer part (111).

An electrical feed-through includes: a feed-through component having an opening; at least one conductor sealed into the opening of the feed-through component in a glass material or a glass ceramic material; and at least one guide component connected to the feed-through component, the at least one guide component including a material that is a plastic.

A wet electrolytic capacitor that contains a casing that contains a cylindrical sidewall is provided. The cylindrical sidewall defines an inner surface that surrounds an interior. First and second outer anodes are positioned within the interior of the casing. The first outer anode has a radiused sidewall and an opposing planar sidewall and the second outer anode has a radiused sidewall and an opposing planar sidewall. A central anode is also positioned within the interior of the casing between the first and second outer anodes. The central anode contains opposing first and second outer sidewalls intersecting with opposing first and second inner sidewalls. The first and second inner sidewalls are planar, and the first planar inner sidewall of the central anode faces the planar sidewall of the first outer anode and the second planar inner sidewall of the central anode faces the planar sidewall of the second outer anode.

A wet electrolytic capacitor that contains a casing that contains a cylindrical sidewall is provided. The cylindrical sidewall defines an inner surface that surrounds an interior. First and second outer anodes are positioned within the interior of the casing. The first outer anode has a radiused sidewall and an opposing planar sidewall and the second outer anode has a radiused sidewall and an opposing planar sidewall. A central anode is also positioned within the interior of the casing between the first and second outer anodes. The central anode contains opposing first and second outer sidewalls intersecting with opposing first and second inner sidewalls. The first and second inner sidewalls are planar, and the first planar inner sidewall of the central anode faces the planar sidewall of the first outer anode and the second planar inner sidewall of the central anode faces the planar sidewall of the second outer anode.

A wet electrolytic capacitor that contains a casing that contains a sidewall extending to an upper end to define an opening is provided. The sidewall further defines an inner surface that surrounds an interior. At least one anode and at least one cathode are positioned within the interior of the casing, wherein the cathode contains an electrochemically-active material and further wherein an anode lead extends from the anode. A working electrolyte is in electrical contact with the anode and the electrochemically-active material. The capacitor also comprises a lid assembly that contains a lid positioned on an upper end of the casing sidewall, wherein the lid defines an orifice through which a tube extends. The tube accommodates the anode lead that extends from the anode. A dielectric layer is formed on a surface of the tube.

A wet electrolytic capacitor that contains a casing that contains a sidewall extending to an upper end to define an opening is provided. The sidewall further defines an inner surface that surrounds an interior. At least one anode and at least one cathode are positioned within the interior of the casing, wherein the cathode contains an electrochemically-active material and further wherein an anode lead extends from the anode. A working electrolyte is in electrical contact with the anode and the electrochemically-active material. The capacitor also comprises a lid assembly that contains a lid positioned on an upper end of the casing sidewall, wherein the lid defines an orifice through which a tube extends. The tube accommodates the anode lead that extends from the anode. A dielectric layer is formed on a surface of the tube.

A method of manufacturing a capacitor assembly package structure includes providing a capacitor unit and a conductive connection layer, in which the capacitor unit includes a plurality of capacitors, and each of the capacitors includes a positive portion and a negative portion electrically connected to the conductive connection layer; partially enclosing the capacitors by an insulative package body, in which the positive portion of each of the capacitors has a positive lateral surface exposed from a first lateral surface of the insulative package body; and then enclosing a first portion of the insulative package body and electrically connecting to the positive portion of each of the capacitors by a first electrode structure, and enclosing a second portion of the insulative package body and electrically connecting to the conductive connection layer by a second electrode structure.

Provided is an electrolytic capacitor with a resin layer, in which an increase in ESR over time is suppressed. An electrolytic capacitor includes a capacitor element including an anode foil, a cathode foil, and electrolytic solution, a case housing the capacitor element, a sealing member sealing the case, and a resin layer arranged in the vicinity of the sealing member. The resin layer arranged in the vicinity of the sealing member includes epoxy resin composition including ester bond. On the other hand, for the electrolytic solution contained in the electrolytic capacitor, compound with hydroxy group is 45 wt % or less including 0 wt % in solvent.

Provided is an electrolytic capacitor with a resin layer, in which an increase in ESR over time is suppressed. An electrolytic capacitor includes a capacitor element including an anode foil, a cathode foil, and electrolytic solution, a case housing the capacitor element, a sealing member sealing the case, and a resin layer arranged in the vicinity of the sealing member. The resin layer arranged in the vicinity of the sealing member includes epoxy resin composition including ester bond. On the other hand, for the electrolytic solution contained in the electrolytic capacitor, compound with hydroxy group is 45 wt % or less including 0 wt % in solvent.

A capacitor module comprises: a lower block panel including first conductive blocks arranged to be tightly attached to each other and respectively having a first lower coupling unit formed at one side and a second lower coupling unit formed at the other side; an upper block panel including second conductive blocks arranged to be tightly attached to each other and respectively having a second upper coupling unit formed at one side to be positioned on a top of the second lower coupling unit and a first upper coupling unit formed at the other side; and capacitors arranged to be positioned between the lower block panel and the upper block panel and respectively having a first external electrode connected to the first lower coupling unit or the second upper coupling unit and a second external electrode connected to the second lower coupling unit or the first upper coupling unit.