Calculation and Analysis of Hydrogen Fuel Cell Performance Under Multiphysics Conditions

Based on hydrogen fuel cell operating principle, the coupling relationship between Nernst voltage, activation overpotential, ohm overpotential, concentration overpotential and gas input parameters, bipolar plate flow characteristic, reaction temperature were analyzed with voltage calculation as the main line. Then the calculation method of hydrogen fuel cell performance under Multi-physical fields is described. According to the voltage calculation process, a Simulink simulation module was built to calculate the battery output characteristics under the influence of multi-parameter correlation. The example shows that the collector plate quality has an important effect on battery reliability and the battery performance can be improved by increasing the hydrogen and oxygen pressure and reaction temperature. The research is of great significance for the optimal design of hydrogen fuel cells.