Aluminum electrolytic capacitor

Details Aluminum electrolytic capacitor Aluminum electrolytic capacitor

1999-03-12

2000-10-03

Kincaid, Kristine

Electricity: electrical systems and devices

Electrolytic systems or devices

Liquid electrolytic capacitor

361518, 361519, 361535, 361536, 361537, 29 2503, H01G 210, H01G 910

Patent

active

061281794

ABSTRACT:
The invention includes an electrolyte solution, a capacitor element impregnating the electrolyte solution, a case containing the capacitor element, a sealing member sealing the opening of the case, and lead wires coming out from the capacitor element and projecting outside by penetrating through the sealing member. The electrolyte solution contains a salt of carboxylic acid of quaternary matter of a compound containing N, N, N'-substitute amidine group and electrolyte. The electrolyte solution has .gamma.-butyrolactone as solvent, and the electrolyte is dissolved in the solvent. The elastic polymer has a crosslinking elastic polymer material. The sealing member has a molded form formed by crosslinking a mixture containing the crosslinking polymer material, magnesium oxide and crosslinking agent. According to this invention, even in severe conditions of such as an atmosphere of high temperature and high humidity, leakage of electrolyte solution can be prevented. As a result, an aluminum electrolytic capacity of long life and high reliability is obtained.

REFERENCES:
patent: 5847919 (1998-12-01), Shimizu

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