Fuel cell control method and fuel cell system
AssigneeHonda Motor Co., Ltd.
InventorsShinya WATANABE, Akiji ANDO
Life of this patent
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Abstract
A fuel cell control method includes detecting a state value indicating a state in a fuel cell during an operation of the fuel cell. The fuel cell includes a membrane electrode assembly and a separator stacked on the membrane electrode assembly. The membrane electrode assembly includes a solid polymer electrolyte membrane sandwiched between an anode electrode and a cathode electrode. It is determined whether a liquid connects the solid polymer electrolyte membrane and the separator based on the state value detected. The fuel cell is dried in a case where it is determined that the liquid connects the solid polymer electrolyte membrane and the separator.
Claims18
A fuel cell control method comprising:
- a detected value obtaining step of, during an operation of a fuel cell including membrane electrode assemblies and separators stacked successively, detecting a status variable of the fuel cell and obtaining a detected value of the status variable, each of the membrane electrode assemblies including a solid polymer electrolyte membrane sandwiched between an anode electrode and a cathode electrode;
- a liquid junction determination step of determining, on the basis of the detected and obtained value, whether a state of liquid junction in which the solid polymer electrolyte membrane and the separator are interconnected through a liquid occurs;
- and
- a liquid junction elimination control step of performing an operation of making the fuel cell dried when the occurrence of the liquid junction is determined.
A fuel cell system including a fuel cell that includes membrane electrode assemblies and separators stacked successively, each of the membrane electrode assemblies including a solid polymer electrolyte membrane sandwiched between an anode electrode and a cathode electrode, the fuel cell system comprising:
- a detected value obtaining unit of, during an operation of the fuel cell, detecting a status variable of the fuel cell and obtaining a detected value of the status variable;
- a liquid junction determination unit of determining, on the basis of the detected and obtained value, whether a state of liquid junction in which the solid polymer electrolyte membrane and the separator are interconnected through a liquid occurs;
- and
- a liquid junction elimination control unit of performing an operation of making the fuel cell dried when the occurrence of the liquid junction is determined.
A fuel cell control method comprising:
- detecting a state value indicating a state in a fuel cell during an operation of the fuel cell which includes a membrane electrode assembly and a separator stacked on the membrane electrode assembly, the membrane electrode assembly including a solid polymer electrolyte membrane sandwiched between an anode electrode and a cathode electrode;
- determining whether a liquid connects the solid polymer electrolyte membrane and the separator based on the state value detected;
- and
- drying the fuel cell in a case where it is determined that the liquid connects the solid polymer electrolyte membrane and the separator.
A fuel cell system comprising:
- a fuel cell comprising:
- a membrane electrode assembly including a solid polymer electrolyte membrane sandwiched between an anode electrode and a cathode electrode;
- and
- a separator stacked on the membrane electrode assembly;
- a detector to detect a state value indicating a state in a fuel cell during an operation of the fuel cell;
- and
- circuitry configured to
- determine whether a liquid connects the solid polymer electrolyte membrane and the separator based on the state value detected;
- and
- dry the fuel cell in a case where it is determined that the liquid connects the solid polymer electrolyte membrane and the separator.
Dependencies are inferred from the claim text.