This standard specifies the specifications of onboard hydrogen system of fuel cell electric vehicles.
This standard is applicable to fuel cell electric vehicles with compressed hydrogen as fuel and working pressure not exceeding 35MPa under the environment temperature of 15℃.
2 Normative References
The following documents for the application of this document are essential. For dated reference, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies.
GB 7258 Safety Specifications for Power-driven Vehicles Operating on Roads
GB/T 24548 Fuel Cell Electric Vehicles - Terminology
GB/T 24549 Fuel Cell Electric Vehicles - Safety Requirements
GB/T 26779 Fuel Cell Electric Vehicles - Refuelling Receptacle
3 Terminologies and Definitions
For the purposes of this document, the following terminologies and definitions as well as those defined in GB/T 24548 apply.
3.1
Hydrogen system
Devices relevant to hydrogen filling, storage, transport, supply and control from hydrogen filling point to fuel cell entrance, see Appendix A.
3.2
Main shut off valve
A kind of valve used for shutting off the hydrogen supply from container to the downstream of such valve.
3.3
Container check valve
A kind of container main valves used for preventing hydrogen from flowing back to filling point from container.
3.4
Pressure regulator
Valve controlling the hydrogen system pressure within the range of design value.
3.5
Pressure relief valve
Valve controlling the pressure in the pipeline at downstream of pressure reducing valve within normal range by releasing air when such pressure abnormally rises.
