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US 6,733,910 B1Granted
Fuel cell coolant tank system
AssigneePower Plug, Inc.
InventorJames H. Kralick
Life of this patent
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Abstract
A fuel cell coolant tank system includes a fuel cell stack including a plurality of fuel cells, a coolant manifold, and a coolant outlet manifold. A coolant expansion tank above the fuel cell stack has an input connected to the coolant inlet manifold of the fuel cell stack and an output connected to the coolant outlet manifold of the fuel cell stack.
Claims6
A method of operating a fuel cell system, comprising:
- flowing coolant through an inlet line to a fuel cell stack;
- flowing the coolant from the fuel cell stack to a coolant expansion tank, the coolant capable of expanding into the coolant expansion tank;
- flowing the coolant from the coolant expansion tank to the fuel cell stack;
- and
- restricting the flow of coolant from the fuel cell stack to the coolant expansion tank.
2 more elements
Dependencies are inferred from the claim text.