3.1.- MAIN PARTS OF THE HYDROGEN FUEL CELL VEHICLE

Although the scheme of a FCV is more complex than the one of a BEV, the only important changes between both vehicles are given in the energy supply system, which is composed by a fuel cell pile fed with oxygen extracted from the air and hydrogen stored in an specially designed tank, either in solid of liquid form or trapped in metallic structures. As a result of the oxidation, the stack emits H2O.

The DC electricity generated in the fuel cell feeds the electric motor, while the surplus energy (from the stack and regenerative braking) is stored in the auxiliary battery (similarly to a hybrid electric vehicle) and used to supply additional power during the acceleration.