DIAGNOSTIC DEVICE

An AC component delta I addition unit (510) of a diagnostic device (5) superimposes an alternating current on an output current of a fuel cell (10). A Zn calculation unit (520) calculates a cell impedance with respect to the alternating current with regard to any of a plurality of cells (10a). A dia...

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Bibliographische Detailangaben
Hauptverfasser:	TAKASHI YAMAMOTO, SYUYA KAWAHARA, YUJI ISHIKAWA, SHIGEKI HASEGAWA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TESTING
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Beschreibung
Zusammenfassung:	An AC component delta I addition unit (510) of a diagnostic device (5) superimposes an alternating current on an output current of a fuel cell (10). A Zn calculation unit (520) calculates a cell impedance with respect to the alternating current with regard to any of a plurality of cells (10a). A diagnosis unit (530) diagnoses that any cell (10a) is subjected to hydrogen deficiency when an absolute value of the cell impedance exceeds (absolute value of a reference impedance + a predetermined value beta). It is diagnosed that any cell (10a) is subjected to oxygen deficiency when the absolute value of the cell impedance is smaller than (absolute value of the reference impedance-a predetermined value alpha). 本发明涉及诊断装置。诊断装置(5)的AC分量ΔI加法单元(510)将交流电流叠加在燃料电池(10)的输出电流上。Zn计算单元(520)计算关于多个电池(10a)中的任个电池的对交流电流的电池阻抗。当电池阻抗的绝对值超过(基准阻抗的绝对值+预定值β)时，诊断单元(530)诊断出任电池(10a)经受缺氢。当电池阻抗的绝对值小于(基准阻抗的绝对值-预定值α)时，诊断出任电池(10a)经受缺氧。