Patent ID: 8415060

Claim:
An in-vehicle fuel cell system comprising: a fuel cell stack formed by stacking a plurality of power generation cells, said fuel cell stack being mounted in a vehicle; a humidifier for humidifying at least one reactant gas by a humidified fluid, the humidifier comprising a casing, wherein: said casing is provided immediately adjacent to the humidifier but does not substantially surround the fuel cell stack and includes a coupling section that is integrally mounted to an end of said fuel cell stack in a stacking direction, said vehicle comprises a mount section and the humidifier integrally includes a mount section fixed to the mount section of said vehicle while supporting said end of said fuel cell stack in the stacking direction, and the humidifier is provided at one end of the fuel cell stack in the stacking direction so that a flow direction of humidified air that exits the humidifier is substantially into the end of the fuel cell stack; and a humidified air pipe for supplying humidified air to the fuel cell stack is provided inside the casing of the humidifier.