A vehicle system includes a voltage sensing circuit configured to detect voltages across cells in a fuel cell stack, and powered by a power supply sharing a voltage reference with the cells and having a voltage magnitude greater than a sum of voltage magnitudes of the cells. The system further includes a controller configured to, responsive to a change in polarity in at least one of the voltages indicative of freezing of the cells, issue an alert notification.
Circuit and method for cell voltage sensing in fuel cell stack
2020-08-18
Patent
Elektronische Ressource
Englisch
IPC: | G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
CIRCUIT AND METHOD FOR CELL VOLTAGE SENSING IN FUEL CELL STACK
Europäisches Patentamt | 2018
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