The invention discloses a fuel
cell vehicle
carriage hydrogen system; the
system comprises a high-pressure
hydrogen storage
bottle group system, a bullied pipeline, an unloading pipeline, a
hydrogen supply pipeline and a blowdown pipeline; the bullied pipeline, the unloading pipeline, and the
hydrogen supply pipeline are connected to the high-pressure
hydrogen storage bottle group system side by side; the blowdown pipeline is connected at the
tail end for safe unloading; and the
system can be applied to a hydrogen
carriage hydrogen system of a fuel
cell vehicle, which can receive the high-pressure hydrogen of a hydrogen filling
station, can safely unload and use the
carriage high-pressure hydrogen, and can provide steady pressure and flow for a fuel
cell engine. The fuel cell vehicle carriage
hydrogen system has the advantages of complete function, simple structure, in-place security protection measure, and high safety and reliability. When having the bullied, unloading, and
hydrogen supply functions, the system also has the over-temperature,
overpressure, overflow, and return protection functions.