Test methods of energy consumption and range for fuel cell electric vehicles
1 Scope
This standard specifies the test methods of energy consumption and range for fuel cell electric vehicles on chassis dynamometer.
This document is applicable to fuel cell electric vehicles of Categories M and N which use compressed gaseous hydrogen (hereinafter referred to as “vehicles”).
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 8170 Rules of rounding off for numerical values &expression and judgement of limiting values
GB 18352.6-2016 Limits and measurement methods for emissions from light-duty vehicles (CHINA 6)
GB/T 18386.1-2021 Test methods for energy consumption and range of electric vehicles - Part 1: Light-duty vehicles
GB/T 18386.2-2022 Test methods for energy consumption and range of electric vehicles - Part 2: Heavy-duty commercial vehicles
GB/T 24548 Fuel cell electric vehicles - Terminology
GB/T 27840-2021 Fuel consumption test methods for heavy-duty commercial vehicles
GB/T 37244 Fuel specification for proton exchange membrane fuel cell vehicles - Hydrogen
GB/T 38146.1 China automotive test cycle - Part 1: Light-duty vehicles
GB/T 38146.2 China automotive test cycle - Part 2: Heavy-duty commercial vehicles
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 24548 and the following apply.
3.1
state of charge; SOC
ratio of hydrogen density inside the onboard hydrogen cylinder to the hydrogen density at nominal working pressure and 15℃
Note: The hydrogen density values under the two main pressure classes are as follows: ρ (35MPa, 15℃)=24.0g/L, ρ (70MPa, 15℃)=40.2g/L.
4 Measurement parameters, units, accuracy and resolution
The requirements for measurement parameters, units, accuracy and resolution in the test are shown in Table 1.
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 Measurement parameters, units, accuracy and resolution
5 Test conditions
5.1 Test vehicle conditions
5.2 Ambient temperature conditions and soaking requirements
5.3 Selection of driving mode
5.4 Setting of vehicle load
5.5 Test tolerance requirements
6 Classification of test vehicles
7 Test methods
7.1 Shortening method
7.2 Finishing off method
Annex A (Normative) Technical specifications for hydrogen refueling
A.1 Hydrogen refueling for vehicles prior to testing
A.2 Hydrogen refueling for vehicles after testing
A.3 Internal pressure measurement of hydrogen cylinder after vehicle test
Annex B (Normative) Data processing methods for Category A vehicles
B.1 Energy variation of REESS
B.2 Hydrogen consumption
B.3 Vehicle range
B.4 Requirements for data processing
Annex C (Normative) Data processing methods for Category B vehicles
C.1 Structural diagram for power system of fuel cell vehicles
C.2 Test data processing for externally rechargeable fuel cell electric vehicles
C.3 Test data processing for non-externally rechargeable fuel cell electric vehicles
C.4 Requirements for data processing
Bibliography
