Method for recovering performance of fuel-cell stack
AssigneeHyundai Motor Company
InventorsDong Jo Oh, Seung Ki Yang, Young Min Kim, Yei Sik Jeon, Jong Hyun Lee
Life of this patent
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Abstract
A method for recovering performance of a fuel-cell stack is provided. When hydrogen used as fuel of the fuel-cell stack is contaminated, air is supplied to an anode instead of hydrogen to remove impurities and recover the performance of the fuel-cell stack. The method includes supplying air to an anode of the fuel-cell stack in an operation stop state of the fuel-cell stack to decrease a stack voltage.
Claims15
A method for recovering performance of a fuel-cell stack, comprising:
- supplying air to an anode of the fuel-cell stack in an operation stop state of the fuel-cell stack to reduce a stack voltage.
A method for recovering performance of a fuel-cell stack, comprising:
- opening an air-hydrogen connection line that connects an air discharge line of the fuel-cell stack and a hydrogen purge line in an operation stop state of the fuel-cell stack, to allow air discharged from a cathode of the fuel-cell stack to flow into an anode.
A method for recovering performance of a fuel-cell stack, comprising:
- opening an air-hydrogen connection line that connects an air supply line of the fuel-cell stack and a hydrogen purge line in an operation stop state of the fuel-cell stack, to allow air supplied to a cathode of the fuel-cell stack to flow into an anode.
Dependencies are inferred from the claim text.