GB/T 41134.2-2021 English PDF (GBT41134.2-2021)

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GB/T 41134.2-2021: Fuel cell power systems for industrial electric trucks -- Part 2: Performance test methods
GB/T 41134.2-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.070
CCS K 82
Fuel Cell Power Systems for Industrial Electric Trucks -
Part 2: Performance Test Methods
(IEC 62282-4-102:2017, Fuel Cell Technologies - Part 4-102: Fuel Cell Power
Systems for Industrial Electric Trucks - Performance Test Methods, MOD)
ISSUED ON: DECEMBER 31, 2021
IMPLEMENTED ON: JULY 1, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 4 
Introduction ... 7 
1 Scope ... 8 
2 Normative References ... 9 
3 Terms and Definitions ... 10 
4 Symbols ... 11 
5 Standard Conditions ... 14 
6 Basis of Heat Value ... 15 
7 General Requirements for Test Preparation ... 15 
7.1 General Rules ... 15 
7.2 Data Collection Scheme ... 15 
8 Test Devices ... 15 
9 Minimum Requirements for Uncertainty of System Measurement ... 17 
10 Test Conditions ... 17 
10.1 Laboratory Conditions ... 17 
10.2 System Installation and Operating Conditions ... 18 
10.3 Battery Status Indications ... 18 
10.4 Quality of Test Fuels ... 19 
11 Fuel Consumption Test ... 19 
11.1 Hydrogen Fuel Consumption Test ... 19 
11.2 Methanol Fuel Consumption Test ... 22 
12 Electric Power Output Test ... 24 
12.1 General Rules ... 24 
12.2 Test Method ... 24 
12.3 Calculation of Average Electric Power Output ... 24 
12.4 Calculation of Electrical Efficiency ... 25 
13 Power Stability in Operation ... 25 
13.1 General Rules ... 25 
13.2 Output Power ... 25 
13.3 Input Power ... 26 
14 Type Test of Environmental Performance ... 27 
14.1 Overview ... 27 
14.2 Noise Test ... 27 
14.3 Exhaust Gas Test ... 29 
14.4 Discharge Water Test ... 33 
15 Type Test of Working Performance ... 34 
15.1 Maximum Output Power Test ... 34 
15.2 Power Cyclic Electronic Load Test ... 35 
15.3 Auxiliary Load Voltage Spike Test ... 35 
16 Test Report ... 36 
16.1 General Rules ... 36 
16.2 Title Page ... 36 
16.3 Table of Contents ... 36 
16.4 Summary Report ... 37 
Appendix A (informative) Heat Values of Hydrogen and Methanol under Standard
Conditions ... 38 
Appendix B (informative) Content Guidelines for Detailed Report and Full Report . 39 
Bibliography ... 41 
Fuel Cell Power Systems for Industrial Electric Trucks -
Part 2: Performance Test Methods
1 Scope
This document specifies the performance test methods for the fuel cell power systems for
industrial electric trucks.
This document applies to industrial electric trucks using gaseous hydrogen or direct methanol
as the fuel for the fuel cell power systems, such as: material handling equipment and forklifts,
etc.
This document applies to DC fuel cell power systems with a rated output voltage not exceeding
150 V for indoor and outdoor use.
This document applies to the fuel cell power systems defined in 3.7 and Figure 1.
This document does not apply to fuel cell power systems equipped with reformers, hybrid
vehicles equipped with internal combustion engines and fuel cell power systems used in
potentially explosive atmospheres.
For the fuel cell power systems involved in this document, the fuel source container is
permanently attached to the industrial trucks or the fuel cell power systems. Removable fuel
source containers are not allowed.
3 Terms and Definitions
The following terms and definitions are applicable to this document.
3.1 Noise Level
Noise level refers to the measured sound pressure level of the fuel cell power system in all
operating modes at a certain specific distance.
NOTE: the unit of expression is (dB); see 14.2 for the measurement method.
3.2 Background Noise Level
Background noise level refers to the sound pressure level of ambient noise at the measurement
point.
NOTE: the fuel cell power system under the cold state in 14.2 adopts and describes this
measurement method.
3.3 Battery
Battery refers to an electrochemical energy storage device, which is used to provide energy
input to support auxiliary load and / or provide electric energy output.
NOTE: backup battery used to control software memory and for similar applications is not included.
3.4 Cold State
Cold state means that the fuel cell power system is in a state without energy input or energy
output at ambient temperature.
[source: GB/T 28816-2020, 3.110.1]
3.5 Discharge Water
Discharge water refers to water discharged from the fuel cell power system, including
wastewater and condensate water.
NOTE: discharge water does not constitute part of the heat recovery system.
[source: GB/T 28816-2020, 2.2, modified]
3.6 Fuel Cell System Electrical Efficiency
Fuel cell system electrical efficiency refers to the ratio of the average electrical output power
of the fuel cell power system to the average power of the supplied fuel within a certain given
period of time.
---standard temperature: Ts = 273.15 K (0 C);
---standard pressure: ps = 101.325 kPa (absolute).
6 Basis of Heat Value
Unless it is otherwise specified, the heat value of the fuel shall adopt low heat value (LHV) or
similar.
NOTE: Appendix A provides the low heat value (LHV) and high heat value (HHV) of hydrogen
and methanol.
If the low heat value (LHV) is adopted to calculate the energy efficiency, then, the symbol
“LHV” is not required, for example:
el, th or total = %
If the high heat value (HHV) is adopted to calculate the energy efficiency, then, indicate the
symbol “HHV” after the value, for example:
el, th or total = % (HHV)
7 General Requirements for Test Preparation
7.1 General Rules
For each test, high-precision instruments shall be selected; the test plan shall be meticulously
made; attention shall be paid to details to minimize the uncertainties. The relevant parties of the
test shall formulate a detailed test plan based on this document and compile a written test plan.
7.2 Data Collection Scheme
In order to satisfy the uncertainty of the target, an appropriate duration and frequency of
readings need to be determined, and data recording equipment shall be available prior to the
performance test.
8 Test Devices
Figure 2 and Figure 3 respectively illustrate the test devices required for the test of the fuel cell
power systems using hydrogen and methanol fuel. The fuel cell power systems are connected
to the electronic load.
---pressure: between 91 kPa (absolute) ~ 106 kPa (absolute).
For each test, the environmental conditions of the laboratory during the test shall be measured.
Sine air quality may affect the performance of the fuel cell power system, the air components
(carbon dioxide, carbon monoxide and sulfur dioxide, etc.) of the laboratory shall be reported
together with the test results.
10.2 System Installation and Operating Conditions
Prior to the start of the test, the fuel cell power system shall be installed and operated in
accordance with the manufacturer’s installation instructions.
10.3 Battery Status Indications
10.3.1 General rules
For systems equipped with batteries, the state of charge (SOC) of the battery shall be consistent
at the beginning and end of the test. The system can be operated at a rated output power for
above 30 min to reach the nominal state of charge. If this process cannot ensure that the state
of charge of the battery is consistent at the beginning and end of the test, it sha...