Sodium-sulphur electric cell
US4049884A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1976 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Apr 8, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a new structure for a sodium-sulphur cell. Such a cell comprises a cathode tank containing sulphur, an electrolyte tube closed, at its lower end, containing sodium and immersed in sulphur, a sodium anode tank, a ceramic support holding the said tank and the tube, the cathode tank being fitted with graphite felt washers ensuring cathode collection of the current, the outside face of the electrolyte tube being, except for the lower end, lined with a porous insulating coating, a graphite felt part being, moreover, inserted between the said lower end of the electrolyte tube and the bottom of the cathode tank. The invention is implemented in sodium sulphur cell batteries for electric vehicles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.