Aluminum electrolytic capacitor
US6128179A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1999 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Mar 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.