Evaluation method for lifetime of proton exchange membrane fuel cell stack in vehicle application English
Evaluation method for lifetime of proton exchange membrane fuel cell stack in vehicle application
1 Scope
This standard specifies the testing and calculation method for lifetime of proton exchange membrane fuel cell stack in vehicle application.
This standard is applicable to evaluation of proton exchange membrane fuel cell stacks for road vehicles and off-road vehicles.
Note: For the purpose of this standard, the impact due to the difference of ambient air quality between laboratory and road is not considered.
2 Normative references
The following referenced documents are indispensable for the application 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 20042.1 Proton exchange membrane fuel cell— Part 1: Terminology
GB/ T23645-2009 Test methods of fuel cell power system for passenger cars
GB/T 28183-2011 Test methods of fuel cell power system for bus
GB/T 29838-2013 Fuel cell module
GB/T 36288-2018 Fuel cell electric vehicles - Safety requirement of fuel cell stack
GB/T 37244-2018 Fuel specification for proton exchange membrane fuel cell vehicles - Hydrogen
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 20042.1, GB/T 23645-2009, GB/T 28183-2011, GB/T 29838-2013 as well as the following apply.
3.1
idling current
output current of the fuel cell stack with the on-board fuel cell system under idling condition, at which the fuel cell system can maintain its work for a period of time, without power output
3.2
rated current
output current of the fuel cell stack with the on-board fuel cell system under rated conditions, at which the fuel cell system can maintain its work for a period of time
3.3
reference current condition
working condition based on a specific current in the evaluation of fuel cell lifetime
3.4
operation mode cycle
changes happened to the fuel cell stack during the continuous operation of the on-board fuel cell system from start-up to shutdown, corresponding to test fuel cell stack
3.5
lifetime of fuel cell stack in vehicle application
service time of fuel cell stack accumulated from the startup to the time when volt-ampere characteristic decays to the required lowest level under operation mode cycle
4 Test equipment and conditions
4.1 Test objects
The test object is generally a single fuel cell stack or a combination of multiple fuel cell stacks. For the test stack, the structure, size and materials of its internal membrane electrode and bipolar plate are the same as those of the fuel cell stack in practical application.
In the case of multi-stack combination in fuel cell system, one of the stacks, or stack combination, partially or wholly, may be taken as the test object. Test objects need to be taken out of the system and installed on the test platform before testing.
Before installing the test object on the test platform, check and make sure that the test object has no visual damage and that the fuel cell stack meets the basic safety requirements of GB/T 36288-2018.
4.2 Installation of test platform and test object
See Table 1 for main measuring devices and accuracy.
GB/T 38914-2020 The following standards are cited：
