Patent ID: 8236073

Claim:
A fuel cell system including a hydrogen supply apparatus, the fuel cell system comprising: a fuel cell; a hydrogen tank; a hydrogen supply path through which hydrogen from the hydrogen tank is supplied to the fuel cell as a hydrogen supply target; a branching path that branches from the hydrogen supply path at a first branching point, in which a portion of the hydrogen supplied from the hydrogen tank flows; an addition apparatus that adds an odorizing agent to the hydrogen flowing in the branching path; a buffer tank that mixes and stores the odorizing agent treated hydrogen; and a supplying apparatus that supplies the odorizing agent treated hydrogen mixed and stored in the buffer tank to the hydrogen supply path at a second branching point located in the hydrogen supply path downstream from the first branching point so that the odorizing agent treated hydrogen flows to the fuel cell, wherein the addition apparatus is located in the branching path downstream of the first branching point and upstream of the buffer tank so that the odorizing agent is added to the hydrogen flowing in the branching path before the hydrogen enters the buffer tank.