Fuel cell failure prediction apparatus

摘要

A fuel cell failure prediction apparatus is provided. The prediction apparatus includes upstream and downstream voltage monitoring units, a data processing unit and a system control unit. The upstream and downstream voltages of each single cell may be synchronously monitored by the upstream and downstream voltage monitoring units. According to the monitored upstream and downstream voltages of each single cell, the data processing unit is used to obtain a differential voltage of the upstream and downstream voltages of each single cell. In accordance with the differential voltage, the system control unit performs a correcting control of failure prediction on the fuel cell.

主权项

1. A prediction apparatus for failure of a fuel cell, wherein the fuel cell comprises at least one single cell, the prediction apparatus comprising:
an upstream voltage monitoring unit, corresponding to each of the single cells and synchronously monitoring an upstream voltage of an anode flow field plate and a cathode flow field plate in each of the single cell; a downstream voltage monitoring unit, corresponding to each of the single cells and synchronously monitoring a downstream voltage of a pair of current collectors; a data processing unit, receiving voltage signals of the upstream voltage and the downstream voltage transmitted by the upstream voltage monitoring unit and the downstream voltage monitoring unit to obtain a differential voltage of the upstream voltage and the downstream voltage of each of the single cell; and a system control unit, configured to perform a correction of improper water control when the differential voltage is lower than a lower limit of a tolerance interval, and configured to perform a correction of improper stoichiometry control when the differential voltage is higher than an upper limit of the tolerance interval.