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US 10,897,053 B2Granted
Aging device for fuel cell stack
AssigneeToyota Jidosha Kabushiki Kaisha
InventorShigemitsu Nomoto
Life of this patent
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Abstract
Provided is an aging device for a fuel cell stack, capable of reliably detecting the generation of a negative voltage during aging while also achieving a cost reduction with reduced cell monitors. The voltage of an end cell on the reactant gas inlet side, in which the voltage is likely to become the highest, is monitored alone, so that the generation of a negative voltage in each of a plurality of individual central cells other than the end cell is estimated.
Claims6
An aging device for a fuel cell stack having a plurality of stacked cells, comprising:
- a first cell monitor configured to monitor a voltage of only a predetermined cell on a reactant gas inlet side;
- a second cell monitor configured to collectively monitor a voltage of a plurality of cells other than the predetermined cell;
- and
- a controller configured to set a voltage value acquired by the first cell monitor as an upper limit voltage value, and estimate generation of a negative voltage in the plurality of individual cells monitored by the second cell monitor from the voltage values acquired by the first cell monitor and the second cell monitor.
1 more element
Dependencies are inferred from the claim text.