The Toyota FCHV is a series of prototypes of a hydrogen - fuel cell vehicle. The abbreviation "FCHV" stands for "Fuel Cell Hybrid Vehicle" literally "fuel cell hybrid vehicle." The hybrid may here not to be confused with hybrids with a combustion engine, but the FCHV already be researched electric cars equipped with a fuel cell stack.
These vehicles put an accumulator not only as a buffer, which is charged during braking and during the subsequent restart for additional propulsive force to ensure, but the battery is the main power storage device and can be over a wide range, the only power source during driving.