Supply system for fuel cells of the S.P.E. (solid polymer electrolyte) type for hybrid vehicles
First Claim
1. A supply system for fuel cells of the solid polymer electrolyte for vehicles, comprising a stack of fuel cells, a first subsystem for supplying the cells with hydrogen, a second subsystem for supplying the cells with compressed air and a primary cooling and humidifying circuit for the cells with forced circulation of pressurised, demineralised water, said supply system further comprising:
- a secondary cooling circuit with forced circulation of a secondary liquid, including a first liquid/liquid exchanger traversed in countercurrent by the secondary liquid and by the demineralised water of the primary circuit, a second air/liquid heat exchanger traversed by the secondary liquid and the compressed air for cooling the latter to a working temperature for the cells and a radiator traversed by the secondary liquid for cooling it with ambient air.
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Accused Products
Abstract
A supply system for fuel cells of the solid polymer electrolyte type for vehicles, including a primary cooling and humidifying circuit with demineralised, pressurised water with a small volumetric capacity and a secondary liquid cooling circuit with plate exchangers for cooling the demineralised water of the primary circuit and air/liquid exchangers for cooling compressed air for supply to the cells, the system further including an electric heater for heating the liquid in the secondary circuit so that the cells can be put into service quickly and means for recycling hydrogen leaving the cells to make the optimum use of the fuel.
95 Citations
10 Claims
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1. A supply system for fuel cells of the solid polymer electrolyte for vehicles, comprising a stack of fuel cells, a first subsystem for supplying the cells with hydrogen, a second subsystem for supplying the cells with compressed air and a primary cooling and humidifying circuit for the cells with forced circulation of pressurised, demineralised water, said supply system further comprising:
a secondary cooling circuit with forced circulation of a secondary liquid, including a first liquid/liquid exchanger traversed in countercurrent by the secondary liquid and by the demineralised water of the primary circuit, a second air/liquid heat exchanger traversed by the secondary liquid and the compressed air for cooling the latter to a working temperature for the cells and a radiator traversed by the secondary liquid for cooling it with ambient air. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
Specification