Fuel cell system

A fuel cell system, comprising:

• a fuel cell configured to generate electricity by receiving an anode gas, which is a fuel gas, and a cathode gas, which is an oxidant gas;
• a combustor disposed outside of the fuel cell and configured to combust an off-gas discharged from the fuel cell;
• a heat exchange device disposed outside of the fuel cell and configured to supply the anode gas and the cathode gas to the fuel cell, while performing heat exchange with a discharged gas from the combustor, wherein the heat exchange device includes a cathode heat exchanger configured to heat the cathode gas using heat of a discharged gas from the combustor, and a reformer configured to reform a raw fuel into the anode gas using the heat of the discharged gas;
• a manifold disposed between the fuel cell and the combustor, and between the fuel cell and the heat exchange device, wherein:
• the manifold includes an off-gas flow path along which the off-gas discharged from the fuel cell is guided to the combustor, and a discharged gas flow path along which the discharged gas discharged from the combustor is guided to the heat exchange device, wherein:
• the discharged gas flow path comprises a first discharged gas flow path along which a part of the discharged gas from the combustor is guided to the cathode heat exchanger, and a second discharged gas flow path along which a remaining part of the discharged gas from the combustor is guided to the reformer, wherein:
• the combustor includes a first catalyst combustor configured to combust the off-gas, and a vaporizer configured to vaporize a raw fuel by exchanging heat with the discharged gas generated by the first catalyst combustor, and supply a vaporized fuel to a flow path portion of the combustor;
• and
• the manifold comprises a second catalyst combustor located in the discharged gas flow path and configured to combust a discharged gas flowing into the manifold through the vaporizer.