Arrangement for tightening stack of fuel cell elements
US4973531A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1989 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Feb 16, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arrangement for tightening a stack of fuel cell elements, each cell element including a cathode, an anode and a tile sandwiched by the cathode and the anode and the cell elements being piled up one after another with separators being interposed therebetween, comprising an upper and a lower holders for holding the fuel cell stack, an upper and a lower pressure-adjusting members for sandwiching the upper and lower holders, each pressure-adjusting member including a hollow body constructed by welding two thin, metallic plates and gas enclosed in the hollow body, an upper and a lower adiabatic materials for sandwiching the pressure-adjusting members, and a pressing device for pressing the upper and lower adiabatic materials, the adiabatic materials, the pressure-adjusting members, the holders and the fuel cell stack, wherein the pressing force of the pressing device is given to the holders and the fuel cell stack through the pressure-adjusting members in the form of an uniform pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.