Separators and method of manufacturing the same

Details Separators and method of manufacturing the same Separators and method of manufacturing the same

1992-02-05

1995-01-03

Chaudhuri, Olik

Metal working

Method of mechanical manufacture

Electrical device making

296233, 296234, H01M 600

Patent

active

053782470

ABSTRACT:
A method of manufacturing a separator for forming a current collector and edge plate by placing a die and an outer frame for surrounding the die on a press head, placing a thin material plate and a soft plate, and pressing the thin material plate through the soft plate. When the current collector and the edge plate are made press working, cut working and joint working such as welding, can be omitted. Accordingly, the residual stress which is intrinsic to such workings is prevented. Thus, no stress is released by the temperature rise involved in the fuel cell operation and the members of the fuel cell do not become distorted. Additionally, the method provides high productivity.

REFERENCES:
patent: 4271245 (1981-06-01), Suzuki et al.
patent: 4514475 (1985-04-01), Mientek
patent: 4920019 (1990-04-01), Stoklosa et al.
patent: 5064583 (1991-11-01), Dagostino et al.

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