An electrolytic capacitor includes a capacitor element, a case, and a sealing member. The case has an opening and houses the capacitor element. The sealing member seals the opening. The sealing member includes an elastic member that is fit in the opening. The elastic member includes a polymer component and a particle component. The polymer component includes at least butyl rubber. The particle component includes at least particles of kaolin. An average particle size of the particles of kaolin is less than or equal to 4 μm.

A capacitor, an assembly comprising a capacitor and a busbar and a method for manufacturing a capacitor are disclosed. In an embodiment a capacitor includes a winding element and a terminal having a first part of a first material and a second part of a second material, the second material being different than the first material, wherein the first part is electrically contacted to the winding element, and wherein the second part is an external contact of the capacitor.

A composite electrode foil roll for manufacturing an electrolytic capacitor, including: bands of electrode foils; strips of an isolating material positioned along a width of the composite electrode foil roll at a plurality of locations. The plurality of locations are at equal distances and correspond to a length of an inner cavity of a case of the electrolytic capacitor. The bands of electrode foils and strips of an isolating material are alternating. A method of manufacturing the composite electrode foil roll including alternating bands of electrode foils and strips of an isolating material. The strips are positioned along a width of the composite electrode foil roll at repeated locations. The repeated locations are at equal distances corresponding to a length of an inner cavity of a case of the electrolytic capacitor.

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 and a conductive assembly. The winding assembly includes a winding conductive positive foil and a winding conductive negative foil. The package assembly fully encloses the winding assembly. The conductive assembly includes a first conductive pin and a second conductive pin. The package assembly includes a casing structure, a filling body and a bottom enclosing structure. The casing structure has an accommodating space for receiving the winding assembly. The filling body is filled in the accommodating space for surrounding the winding assembly. The bottom enclosing structure is disposed on a bottom portion of the casing structure for carrying the winding assembly and enclosing the accommodating space. The bottom enclosing structure is surrounded by the casing structure and tightly connected to the filling body.

An electrolytic capacitor includes a capacitor element and a liquid component. The capacitor element includes an anode body that includes a dielectric layer on a surface of the anode body and a conductive polymer that covers a part of the dielectric layer. The liquid component includes a sugar alcohol component and a polyalkylene glycol component. The sugar alcohol component contains at least one selected from the group consisting of a sugar alcohol having four or more hydroxy groups and a derivative of the sugar alcohol.

An electrolytic capacitor includes a capacitor element. The capacitor element includes a separator, an anode body and a cathode body each having a foil shape and facing each other with the separator disposed between the anode body and the cathode body, and an electrolyte layer being in contact with the anode body, the cathode body, and the separator. The electrolyte layer contains a first conductive polymer and a first compound having a melting point of 50° C. or higher. The first compound is at least one compound selected from the group consisting of a sugar and a polyhydric alcohol. The first compound is unevenly distributed in the electrolyte layer.

An apparatus is disclosed which includes an electrolytic capacitive element with multiple capacitor sections.

A winding apparatus for the production of power storage devices comprising: a frame, a first actuator device supported by the frame and comprising a rotor and a first drive element, a support which is driven in rotation by the first actuator device through the first drive element, a second actuator device comprising a second drive element and a non-circular core on which to wind a material; said core being arranged on the support in a rotary manner and being driven in rotation by the second actuator device through the second drive element. The second drive element passes at least partially through the rotor.

A capacitor 1 includes a capacitor element 3 holding solution between an anode foil 5 and a cathode foil 7 that are wound up with a separator 6 in between, a body case 2 for housing the capacitor element 3, and a sealing member 4 for sealing the body case 2. A part of the separator 6 makes contact, at a plurality of points or over an area, with the face of the sealing member 4 facing the capacitor element 3 so as to rest on that face. The solution contains, dissolved in a lipophilic solvent, deterioration preventing agent that solidifies by oxidation. The solution is supplied through the separator 6 to the sealing member 4 and permeates the sealing member 4, so that a coating 17 resulting from the agent solidifying coats the outer face of the sealing member 4, leaving the solution present in the sealing member 4.

An apparatus is disclosed which includes an electrolytic capacitive element with multiple capacitor sections, a pressure interrupter cover assembly, and a conductor configured to electrically connect a common terminal of the multiple capacitor sections to a common cover terminal. Each first terminal of the multiple capacitor sections is electrically connected to one of a plurality of capacitor cover terminals.