The invention discloses a
thermal management system and method for a high temperature
solid fuel
cell stack. The
system comprises an adiabatic chamber, an electric heater II, an electric heater III, agas separator and an
ammonia gas supply device. The
cell stack is placed in the adiabatic chamber, a catalyst
coating is sprayed at the outer surface of the
cell stack, a way is branched from an oxidation gas inlet and is converged with an oxidation gas outlet and the
ammonia gas supply device through a pipeline and is then connected to an air inlet of the adiabatic chamber, the electric heater III and the air inlet of the adiabatic chamber are connected by a pipeline, the gas separator is internally equipped with a
hydrogen permeation membrane, and the air inlet of the gas separator is connected to the air outlet of the adiabatic chamber. During
hot start of the cell stack, air flow heats the inside and outside of the cell stack simultaneously, during running, a
mixed gas of
ammonia andoxidation gas is injected into the adiabatic chamber for
cracking reaction to absorb the heat of the cell stack, thus cooling the cell stack. The
system and method provided by the invention shorten the
hot start time of the cell stack, and improve the thermal management ability of the cell stack and the cell stack temperature
distribution uniformity.