FUEL CELL SYSTEM

Abstract: a system includes a fuel cell stack, a coolant fluid tank, a heat-exchanger, an exhaust, a controller and a valve having an inlet and first and second outlets. coolant fluid is conveyed from the tank to the stack on a feed line and from the stack to the inlet on a discharge line. the controller controls the valve such that coolant fluid exits either at the first outlet, such that coolant fluid passes back to the tank on a recycle line via the heat-exchanger, or at the second outlet, such that coolant fluid passes to the exhaust and leaves the system. the controller is arranged to select the first or second outlet according to the heat duty required across the stack and that achievable across the heat-exchanger. the gravimetric power density of the system is higher than that of an equivalent system which implements only closed-loop cooling.

Inventor(s): Jacopo TACCONI

CPC Classification: H01M8/04029 (PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY)

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