DIAGNOSTIC DEVICE

An AC component 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 fuel cells (10a). A dia...

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Bibliographische Detailangaben
Hauptverfasser:	KAWAHARA SYUYA, ISHIKAWA YUJI, HASEGAWA SHIGEKI, YAMAMOTO TAKASHI
Format:	Patent
Sprache:	eng ; kor
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 REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION 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 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 fuel cells (10a). A diagnosis unit (530) diagnoses any fuel 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 ), and diagnoses any fuel 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 ). 진단 장치(5)가, 교류 성분 ΔI 부가부(510)가 연료 전지(10)의 출력 전류에 대하여 교류 전류를 중첩시킨다. Zn 산출부(520)는 복수의 연료 전지 셀(10a) 중 임의의 연료 전지 셀(10a)에 대하여, 교류 전류에 대한 셀 임피던스를 산출한다. 진단부(530)는, 셀 임피던스의 절댓값이 (기준 임피던스의 절댓값+소정값 β)보다도 큰 경우에는, 임의의 연료 전지 셀(10a)이 수소 결핍이라 진단한다. 셀 임피던스의 절댓값이 (기준 임피던스의 절댓값-소정값 α)보다도 작은 경우에는, 임의의 연료 전지 셀(10a)이 산소 결핍이라 진단한다.