FUEL CELL IMPEDANCE MEASUREMENT DEVICE AND FUEL CELL IMPEDANCE MEASUREMENT METHOD

FUEL CELL IMPEDANCE MEASUREMENT DEVICE AND FUEL CELL IMPEDANCE MEASUREMENT METHOD

An apparatus for measuring an impedance of a fuel cell is configured to: output an AC current to a fuel cell; and adjust an impedance so that an impedance between the fuel cell and a load device becomes higher than an impedance between a secondary battery and the load device at a frequency of the AC...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SATO, Masashi, AKASHI, Kotaro, KANEKO, Yohei, MATSUMOTO, Michihiko
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRICITY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
TESTING
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Beschreibung
Zusammenfassung:An apparatus for measuring an impedance of a fuel cell is configured to: output an AC current to a fuel cell; and adjust an impedance so that an impedance between the fuel cell and a load device becomes higher than an impedance between a secondary battery and the load device at a frequency of the AC current outputted to the fuel cell. The apparatus is also configured to: adjust the AC current so that a positive-electrode side AC potential difference matches a negative-electrode side AC potential difference, the positive-electrode side AC potential difference being a difference between an electric potential of the fuel cell on a positive electrode side and a middle electric potential, the negative-electrode side AC potential difference being a difference between an electric potential of the fuel cell on a negative electrode side and the middle electric potential; and calculate an impedance of the fuel cell on the basis of the adjusted AC current and at least one AC potential difference of the positive-electrode side AC potential difference and the negative-electrode side AC potential difference.