| 20100183935 | BIPOLAR PLATE FOR FUEL CELLS - A fuel cell, of the type constituted by at least one pair of bipolar plates whose outer surfaces are provided with contoured grooves for conveying the reagents, between which respective membranes which contain the surfaces of the electrodes are interposed. The plates delimit, with their internal surfaces provided with channels, a path for flows of cooling fluid. A region which is open toward the outside environment is provided between the elementary cell, which is constituted by inflow and outflow manifolds for reagents and by the contoured grooves provided on the outer surface of the plates between which the respective membrane is interposed, and the cooling circuits, which are constituted by the paths for the cooling fluid and by the respective areas for the inflow and outflow of the cooling fluid, which are formed between two surfaces of contiguous plates, the open region being adapted to drain externally any leaks of the cooling circuit, preventing the introduction of the leaks into the surfaces provided with grooves for circulating the reagents. | 07-22-2010 |
