US 11,990,286 B2
Capacitor
Takashi Takezawa, Shijonawate (JP); Masakazu Hosogi, Shijonawate (JP); and Hirokazu Nishikori, Shijonawate (JP)
Assigned to SUN ELECTRONIC INDUSTRIES CORP., Shijonawate (JP)
Appl. No. 17/642,101
Filed by SUN Electronic Industries Corp., Shijonawate (JP)
PCT Filed Sep. 13, 2019, PCT No. PCT/JP2019/036149
§ 371(c)(1), (2) Date Mar. 10, 2022,
PCT Pub. No. WO2021/049015, PCT Pub. Date Mar. 18, 2021.
Prior Publication US 2022/0367123 A1, Nov. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01G 9/145 (2006.01); H01G 9/02 (2006.01); H01G 9/035 (2006.01); H01G 9/048 (2006.01); H01G 9/10 (2006.01)
CPC H01G 9/145 (2013.01) [H01G 9/02 (2013.01); H01G 9/035 (2013.01); H01G 9/048 (2013.01); H01G 9/10 (2013.01)] 12 Claims
OG exemplary drawing
 
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,
wherein
a part of the separator bends to make contact, at a plurality of points or over an area, with a face of the sealing member facing the capacitor element so as to rest on said face, while
the solution contains, dissolved in a lipophilic solvent, a sealing member deterioration preventing agent that solidifies by oxidation,
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.