Patent ID: 11915887
Assignee: SUN ELECTRONIC INDUSTRIES CORP.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A capacitor comprising:
a capacitor element holding a predetermined solution between an anode foil and a cathode foil that are wound up with a separator in between;
a body case for housing the capacitor element; and
a sealing member for sealing the body case, the sealing member containing an anti-aging agent,
wherein
a face of the sealing member facing the capacitor element bends toward the capacitor element such that a central part of said face protrudes toward the capacitor element,
a width of the separator in a lateral direction is greater than a width of the anode and cathode foils in the lateral direction, and the separator protrudes beyond the anode and cathode foils toward the sealing member,
a part of the separator makes contact, at a plurality of points or over an area, with the face of the sealing member facing the capacitor element so as to rest on said face,
the solution contains, dissolved in a lipophilic solvent, a sealing member deterioration preventing agent that solidifies by oxidation, the sealing member deterioration preventing agent having a molecular weight of 3000 or less, and
the solution is supplied through the separator to the sealing member and permeates the sealing member, so that a coating resulting from the sealing member deterioration preventing agent solidifying coats an outer face of the sealing member, leaving the solution present in a part of the sealing member closer to the capacitor element than the coating.