Multi-electrode double layer capacitor having hermetic electrolyte seal
US6449139B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1999 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Aug 18, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A long life double layer capacitor and method of making the same including a case and a first terminal with an electrically insulating hermitic seal interposed between the first terminal and the case. A first current collector foil is electrically coupled to an interior portion of the first terminal and a first metal impregnated carbon cloth electrode having a metal impregnated side which is juxtaposed against the first current collector foil. A porous separator is then juxtaposed against the first metal impregnated carbon cloth electrode and separating the first metal impregnated carbon cloth electrode from a second metal impregnated carbon cloth electrode having a metal impregnated side which faces away from the porous separator. A second current collector foil is juxtaposed against the metal impregnated side of the second metal impregnated carbon cloth electrode and is electrically coupled to the second terminal. And an electrolyte solution saturates the first and second metal impregnated carbon cloth electrodes and is substantially contained by the case and the electrically insulating hermitic seal such that an influx of impurities into the electrolyte solution is substantially…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.