| 摘要 |
A fuel cell stack assembly comprises a stack of fuel cells, each fuel cell having an air flow conduit with an input/output ventilation aperture disposed on a ventilation face of the stack, the ventilation apertures forming an array over said ventilation face of the stack. A membrane is moveable between a first configuration in which the ventilation face is occluded and a second configuration in which the ventilation face is not occluded. The membrane is rollable between the first configuration and the second configuration. Ventilation of the fuel cell stack is thereby controlled by the position of the membrane, e.g. during fuel cell start up and/or shut down procedures or for hydration control of the fuel cells. |
