Fuel cell cooling apparatus and fuel cell system

A fuel cell system comprising:

• a fuel cell for generating power, which is supplied to a predetermined external load, from a chemical reaction between hydrogen gas and oxygen gas, wherein the fuel cell produces activation heat at a first temperature;
• a hydrogen supply apparatus for supplying the fuel cell with the hydrogen gas;
• a chemical heat pump system for producing heat at a second temperature, which is higher than the first temperature, using the activation heat, the heat pump system including:
• a first heat pump circuit for absorbing the activation heat of the fuel cell and cooling the fuel cell, wherein the first heat pump circuit has a first endothermic device and a first exothermic device, a first heat carrier being circulated between the endothermic device and the exothermic device, wherein the first heat carrier receives heat from the fuel cell at the first endothermic device and is heated to the second temperature by a chemical reaction in the first endothermic device;
• and
• a second heat pump circuit having a second endothermic device, which cools the first exothermic device, and a second exothermic device, wherein a second heat carrier is circulated between the second endothermic device and the second exothermic device, wherein the second heat carrier cools the first heat carrier at the second endothermic device, and the second heat carrier is heated at the second exothermic device to a third temperature, which is higher than the second temperature, by a chemical reaction;
• and
• a heat transfer apparatus for cooling the second heat carrier, after the second heat carrier has been heated to the third temperature, at the second exothermic device.