MULTIFUNCTIONAL TIGHTENING CLAMPS FOR A FUEL CELL

摘要

The invention relates to multifunctional tightening clamps that ensure the transmission of the electric current generated by the fuel cell stack, the insulation of the different ducts and passage openings of the operation fluid of the fuel cell stack, and the tightening of the stack itself. Each clamp comprises a single part, the upper surface and the side surfaces of which, except for the conductors, are coated with an insulating material. Similarly, the supply and discharge openings (23) are also insulated. However, the tightening surface (29) is at least coated with a conductive deposit on a predetermined area corresponding to the conducting areas of the upper surface of the end of the stack. The invention can be used in PEM ("Proton Exchange Membrane") fuel cells.