Stack of improved fuel cells and electric power generator comprising said stack

摘要

The invention relates to a stack (200) comprising a plurality of stacked fuel cells (100), fixed and fluidically connected to a first head (210), which comprises: a feeding inlet (301) for a fuel flow and a corresponding outlet (302); a feeding inlet (303) for a comburent flow and a corresponding outlet (306); a feeding inlet (302) and a corresponding outlet (305) for a flow of a cooling heat-transfer fluid thermally coupled with the fuel cells (100) in order to remove at least part of the reaction heat at the fuel cells (100) themselves; the first head (210) comprising a feeding inlet (307) and a corresponding outlet (308) for a flow may pass, said volume being thermally coupled with the cooling heat-transfer fluid flow, so that the cooling heat-transfer fluid delivers at least some of the heat removed from the fuel sells (100) to the working heat-transfer fluid.

主权项

1. A stack comprising:
a first head; a plurality of stacked fuel cells, which are fixed and fluidically connected to said first head; said first head comprising:
a feeding inlet for a fuel flow and a corresponding outlet;a feeding inlet for a comburent flow and a corresponding outlet; a feeding inlet and a corresponding outlet for a flow of a cooling heat-transfer fluid thermally coupled with said fuel cells so as to remove at least part of the reaction heat at the fuel cells; wherein said first head comprises a feeding inlet and a corresponding outlet for a flow of working heat-transfer fluid, said first head internally defining a volume through which said working heat-transfer fluid flow passes, said volume being thermally coupled with said cooling heat-transfer fluid flow, so that the cooling heat-transfer fluid delivers at least part of the heat removed from the fuel cells to the working heat-transfer fluid; and wherein said stack is further comprising:
a current collector which comprises: an electrically conductive plate element, electrically connected to the stack and substantially contained therein;a connection portion that protrudes outside the stack and electrically connected to a DC/DC converter releasably fixed to the stack.