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US 11,380,493 B2Granted
Electrolytic capacitor
AssigneeSUN Electronic Industries Corp.
InventorsTakashi Takezawa, Masakazu Hosogi, Hajime Kimachi, Yuya Nagaike, Takahisa Adachi
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Abstract
An electrolytic capacitor includes a capacitor element, a body case, and a sealing body. The capacitor element has a cathode foil and an anode foil wound up with a separator in between, and has a prescribed solution held between the cathode foil and the anode foil. The body case houses the capacitor element. The sealing body seals the body case. The solution is a fat-soluble antioxidant dissolved in a lypophilic solvent and the separator is configured to be in contact with the sealing body.
Claims12
An electrolytic capacitor, comprising:
- a capacitor element having an anode foil and a cathode foil wound up with a separator in between, the capacitor element holding a predetermined solution between the anode and cathode foils;
- a body case in which the capacitor element is housed;
- and
- a sealing member with which the body case is sealed,
- wherein the solution has a lipid-soluble antioxidant dissolved in a lipophilic solvent,
- a width of the separator in a shorter-side direction thereof is larger than a width of the anode and cathode foils in a shorter-side direction thereof, and the separator protrudes farther toward the sealing member than the anode and cathode foils, and
- a central part of a face of the sealing member close to the capacitor element protrudes toward the capacitor element such that the separator is in contact with the sealing member.
4 more elements
Dependencies are inferred from the claim text.