GB/T 24554-2022 English PDF (GBT24554-2022)

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GB/T 24554-2022: Performance test methods for fuel cell system
GB/T 24554-2022
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.120
CCS T 47
Replacing GB/T 24554-2009
Performance test methods for fuel cell system
ISSUED ON: DECEMBER 30, 2022
IMPLEMENTED ON: JULY 01, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Measurement parameters, units and accuracy ... 5
5 Test conditions ... 6
6 General test requirements ... 8
7 Preprocessing methods ... 8
8 Test methods ... 9
Appendix A (Informative) Test sequence of test items ... 21
Appendix B (Normative) Steady-state test data processing ... 22
Appendix C (Normative) Dynamic average power test data processing ... 24
Appendix D (Informative) Block diagram of fuel cell engine boundaries ... 26
Appendix E (Normative) Measurement method for fuel cell stack volumetric power
density ... 27
Performance test methods for fuel cell system
1 Scope
This document specifies the test methods of normal temperature start characteristics,
low temperature cold start characteristics, steady state characteristics, dynamic
response characteristics, dynamic average efficiency, high temperature operation test,
air tightness test, insulation resistance test, mass and power density test, etc. for fuel
cell engine.
This document applies to the testing of proton exchange membrane fuel cell engines for
vehicles.
2 Normative references
The following documents are referred to in the text in such a way that some or all of
their content constitutes requirements of this document. For dated references, only the
version corresponding to that date is applicable to this document; for undated references,
the latest version (including all amendments) is applicable to this document.
GB/T 8170, Rules of rounding off for numerical values and expression and judgment
of limiting values
GB 18384, Electric vehicles safety requirements
GB/T 24548, Fuel cell electric vehicles - Terminology
GB/T 34593-2017, Test methods of hydrogen emission for fuel cell engine
GB/T 35178, Fuel cell electric vehicles - Hydrogen consumption - Test methods
GB/T 37244, Fuel specification for proton exchange membrane fuel cell vehicles -
Hydrogen
3 Terms and definitions
Terms and definitions determined by GB/T 24548 are applicable to this document.
4 Measurement parameters, units and accuracy
Table 1 specifies the measurement parameters, units and accuracy of the test.
engine shall be shut down immediately. When the ambient temperature reaches the set
temperature, start timing, and the effective immersion time shall not be less than 12
hours.
During the whole low-temperature cold start and low-temperature operation process,
the temperature of the environmental chamber shall be controlled within ±2.0 °C of the
set temperature and shall be lower than 0 °C.
Note: The effective immersion time refers to the time from the time when the
temperature of the environmental chamber reaches the set temperature to the
end of the immersion.
7.3 High temperature immersion method
Before immersion, the process of switching on and off the fuel cell engine shall be
completed once, and the fuel cell engine shall be turned off.
In the high temperature operation test of the fuel cell engine, the radiator or heat
exchanger used for the fuel cell engine shall be placed in the environmental chamber.
Set the temperature of the environmental chamber to 45.0 °C and the relative humidity
to 40% ~ 90%. When the ambient temperature reaches the set temperature, start timing,
and the effective immersion time shall not be less than 2 hours.
During the whole high temperature immersion and high temperature operation process,
the temperature of the environmental chamber shall be controlled within ±2.0 °C of the
set temperature.
Note: The effective immersion time refers to the time from the time when the
temperature of the environmental chamber reaches the set temperature to the
end of the immersion.
7.4 Warming-up method
According to the manufacturer’s use regulations, make the fuel cell engine system work
at a certain power, while monitoring the outlet temperature of the coolant of the fuel
cell engine. When the outlet temperature of the coolant of the fuel cell engine reaches
the normal operating temperature (the temperature is specified by the manufacturer),
the fuel cell engine is considered to be in a hot state.
8 Test methods
8.1 Start characteristic test
8.1.1 Normal temperature start characteristic test
8.1.1.1 Normal temperature idle speed cold start characteristic test
8.1.1.1.1 Test conditions
Before the test, place the fuel cell engine at normal temperature, and carry out the
immersion treatment according to the immersion method in 7.1. The test process shall
be carried out automatically without manual intervention.
8.1.1.1.2 Test procedure
Test according to the following procedure:
a) According to the start procedure recommended by the manufacturer, the test
platform sends a starting command to the fuel cell engine according to the
provisions of 5.4, and starts the fuel cell engine;
b) After the fuel cell engine is started, keep it running for at least 10 minutes at idle
speed (or the lowest power point of the fuel cell engine);
c) If condition b) is not met, the test shall be carried out again according to 8.1.1.1.1
and this article.
8.1.1.1.3 Data measured and recorded during the test
Data measured in the test: cold starting time, fuel cell stack (or fuel cell engine) voltage,
fuel cell stack (or fuel cell engine) current, etc.
8.1.1.2 Normal temperature idle speed hot start test
8.1.1.2.1 Test conditions
Before the test, warm up the fuel cell engine according to the method specified in 7.4,
so that the fuel cell engine is in a warm-up state. The test process shall be carried out
automatically without manual intervention.
8.1.1.2.2 Test procedure
Test according to the following procedure:
a) After the warm-up process is over, stop for 10 s; then, follow the starting procedure
specified by the manufacturer. The test platform sends a starting command to the
fuel cell engine according to the provisions of 5.4, and starts the fuel cell engine;
b) After the fuel cell engine is started, keep it running for at least 10 minutes at idle
speed (or the lowest power point of the fuel cell engine);
c) If condition b) is not met, the test shall be carried out again according to 8.1.1.2.1
and this article.
8.1.1.2.3 Data measured and recorded during the test
b) The test platform sends a loading command to the fuel cell engine in accordance
with the provisions of 5.4. After loading to the rated power point, the fuel cell
engine continues to run at the rated power for at least 10 minutes;
c) If condition b) is not met, the test shall be carried out again according to 8.1.1.4.1
and this article.
8.1.1.4.3 Data measured and recorded during the test
Data measured in the test: hot starting time, fuel cell stack (or fuel cell engine) voltage,
fuel cell stack (or fuel cell engine) current.
8.1.2 Low temperature cold start characteristic test
8.1.2.1 Low temperature idle speed cold start test
8.1.2.1.1 Test conditions
Before the test, place the fuel cell engine in the environmental chamber; set the
temperature of the environmental chamber to the spec...