GB/T 33979-2017 English PDF (GBT33979-2017)

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GB/T 33979-2017: Test methods for proton exchange membrane fuel cell power system at sub-zero environment
GB/T 33979-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.070
K 82
Test methods for proton exchange membrane
fuel cell power system at subzero environment
ISSUED ON. JULY 12, 2017
IMPLEMENTED ON. FEBRUARY 1, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword . 3 
1 Scope .. 4 
2 Normative references . 5 
3 Terms and definitions . 5 
4 General safety requirements . 6 
5 Test conditions . 6 
6 Test platform . 6 
7 Routine test prior to subzero environment test . 8 
8 Subzero environment test. 10 
9 Test report . 14 
Annex A (informative) Shutdown procedures used for subzero storage . 17 
Annex B (informative) Test report . 18 
Test methods for proton exchange membrane
fuel cell power system at subzero environment
1 Scope
This Standard specifies, at low temperature environment (subzero), the general
safety requirements, test conditions, test benches, routine tests before low
temperature test, and low temperature test methods and test reports of proton
exchange membrane fuel cell power system.
This Standard is applicable to the storage test, startup test, working
performance test of proton exchange membrane fuel cell power system at low
temperature environment (subzero) that use air as oxidant.
This Part is applicable to the complete fuel cell power system.
NOTE. According to the needs, realize the locking function. The system consists of some
or all of the following components.
- fuel processing system. a system for metering, adjusting, processing, and pressure-
regulating of fuel needed for fuel cell power system;
- air processing system. a system for metering, adjusting, processing, and pressure-
applying of air needed for fuel cell power system;
- thermal management system. related parts that provide cooling and heat dissipation to
maintain heat balance inside the fuel cell power system, also recover waste heat and
assist the heating system during start-up;
- water treatment system. treat recycled or added water for use in fuel cell power system;
- power regulation system. control that the generated power matches user-specified power
requirements;
- automatic control system. consist of sensors, actuators, valves, switches, and logic
components to maintain fuel cell power system parameters within the manufacturer's set-
up without manual intervention;
- ventilation system. provide air to the chamber of fuel cell power system through natural
or mechanical methods;
- fuel cell stack. an assembly consisting of a plurality of single cells, plates, cooling plates,
common pipes and supporting structures; its typical function is to convert hydrogen-rich
4 General safety requirements
The general safety requirements for proton exchange membrane fuel cell stack
shall comply with the provisions of 4.2 in GB/T 20042.2.
The safety requirements of fuel cell power system for automobile use shall
comply with the provisions of 4.2 in GB/T 25319-2010.
The fixed proton exchange membrane fuel cell power system shall comply with
the provisions of GB/T 27748.1.
The portable proton exchange membrane fuel cell power system shall comply
with the provisions of 1.2 in GB/T 30084-2013.
5 Test conditions
When testing, the test conditions shall meet the following requirements.
- Ambient temperature. the ambient chamber temperature is 23°C±2°C,
and the low-temperature ambient temperature is 0°C~-40°C. In the
specific test, the parties to the test shall negotiate and determine the
ambient temperature adopted for the test according to the purpose of the
test;
- Test environment air pressure. 91kPa~104kPa.
6 Test platform
6.1 Test equipment and requirements
The subzero environmental test chamber and the fuel cell power system test
platform required for the test of the fuel cell power system shall at least meet
the following requirements.
- Subzero environmental test chamber. the subzero environmental test
chamber shall be able to meet the subzero environmental conditions
required by the test. The difference in the temperature distribution within
the chamber shall not exceed ±2°C. In addition to the hydrogen source,
the gas supply, coolant, and circuit interface are all placed in the
environmental test chamber. Temperature measurements are set at the
inlet and coolant connections to ensure that the air and fuel inlet gas
temperature of the fuel cell power generation system is the set ambient
temperature. The fuel cell power system, as well as its controller and
radiator, is also set in the environmental test chamber. The hydrogen
alarm and air outlet shall be installed in the chamber to ensure the safety
- Requirements for operation condition of fuel cell power system.
● fuel intake and exhaust flow;
● air intake and exhaust flow;
● fuel operating pressure (represented value. upstream of the fuel cell
stack);
● air operating pressure (represented value. upstream of the fuel cell
stack);
● fuel composition;
● air composition;
● fuel stoichiometric ratio;
● air stoichiometric ratio;
● working current;
● working voltage.
In an environment with an environmental cabin temperature of (23°C±2°C), the
fuel cell power system shall be tested in the order of 7.2~7.5.
Through 7.2 to 7.5, the fuel cell power system's gas leakage rate, startup time
and energy consumption, shutdown time and energy consumption, purge time
and energy consumption, external energy consumption and other fuel cell
power system performance parameters can be obtained.
7.2 Gas tightness test
Conduct gas leakage test of fuel cell power system in accordance with 5.1.1 of
GB/T 25319-2010.
7.3 Startup test
According to the startup procedures specified by the manufacturer of fuel cell
power system, conduct the startup test of fuel cell power system. Record the
state from cold startup to idle, rated power output, peak power, fuel input and
output flow, air input and output flow, auxiliary power input, auxiliary heat input,
purge time and energy consumption of fuel cell power system.
7.4 Power generation performance test
According to the manufacturer's regulations for fuel cell power system, the fuel
cell power system operates stably at idle and at rated power output. Record the
current of external auxiliary system, control system voltage (12V, 24V), control
system current (12V, 24V).
Test data collection frequency is not less than 1Hz.
The data collected for the tests of gas leakage, shutdown characteristics and
power generation performance of fuel cell power system are as follows.
- leakage test items for fuel cell power system. measure the gas leakage
and the leakage rate of fuel cell power system by the airtightness test of
fuel cell power system;
- startup characteristic test items. startup time, fuel input flow and
temperature, external auxiliary power input, auxiliary heat input, purge gas
input;
- shutdown characteristics test items. shutdown time, fuel input, external
auxiliary power input, auxiliary heat input, purge gas input;
- power generation performance test items. fuel input, external auxiliary
power input, auxiliary heat input, electrical output and heat output shall be
measured at the same time.
The appropriate test duration shall be determined by reference to the type of
fuel cell power system to which the normativ...