Fuel cell system

Abstract

A fuel cell system which can exhibit a better result of a reduction in size and weight is provided. The fuel cell system of the present invention comprises a stack of fuel cells which generate electricity by receiving a supply of hydrogen gas and air, a fuel supply passage for supplying hydrogen gas to the stack, a fuel circulation and supply passage and a fuel circulation and discharge passage equipped with a fuel pump for causing any unreacted hydrogen gas discharged from the stack to join the fuel supply passage and be circulated, a cooling water pump for supplying cooling water to the stack, and a regenerator driven by the cooling water supplied from the cooling water pump for generating a rotary force. The hydrogen pump is adapted to be driven for rotation by the regenerator.

Dependencies are inferred from the claim text.