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GB/T 31037.2-2014 (GB/T31037.2-2014)

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GB/T 31037.2-2014: PDF in English (GBT 31037.2-2014)

GB/T 31037.2-2014
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.070
K 82
Fuel cell power system used for industrial lift truck
applications -- Part 2. Technical specification
ISSUED ON. DECEMBER 5, 2014
IMPLEMENTED ON. JULY 1, 2015
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword . 3 
1 Scope .. 4 
2 Normative references . 6 
3 Terms and definitions . 7 
4 General requirements . 8 
5 Preparations before the test and test conditions . 11 
6 Performance test . 12 
7 Inspection rules .. 19 
8 Identification, description and technical documentation . 21 
Annex A (Normative) Leakage calculation . 25 
Fuel cell power system used for industrial lift truck
applications -- Part 2. Technical specification
1 Scope
1.1 Overview
This Part of GB/T 31037 specifies the technical requirements, test methods,
inspection rules, and technical documentation of the fuel cell power system
used for industrial lift truck applications.
Fuel cell power systems that power electric industrial lift trucks for indoor or
outdoor use include fuel cell power systems (referred to as power systems) and
energy storage modules. An energy storage module refers to an electrical
energy storage device that is used to start a power system, or to help or
supplement a fuel cell power system to power internal or external loads. It
consists of a lead-acid battery, a nickel-metal hydride battery, a lithium-ion
battery, a super capacitor, or other energy storage modules with corresponding
functions. This Part covers only the technical specification of the fuel cell power
system and does not include the requirements for energy storage modules.
The industrial lift trucks involved in this Part include. counterbalanced fork lift
truck, reach truck, straddle truck, pallet-stacking truck, platform truck, truck with
elevatable operation position, side-loading truck, rough terrain truck, lateral
stacking truck (both sides), lateral and front stacking truck, stacking high-lift
straddle carrier, pallet truck, platform and stillage truck, non-stacking low-lift
straddle carrier, and order picking truck.
This Part is applicable to proton exchange membrane (PEM) fuel cell power
systems that use gaseous hydrogen as the fuel and air as the oxidant.
The dangerous situations considered in this Part are limited to the safety
measures that shall be taken if the abnormal operation of the fuel cell power
system may cause damage to the power system itself.
1.2 System boundary
The schematic diagram for the system boundary is shown in Figure 1. Among
which, the components of the fuel cell power system are in the thick solid line
frames, and the entry-exit arrows at the frame boundary represent the inputs
and outputs for the fuel cell power system.
operating temperature range by heating or cooling or heat removal.
— Humidifying system. A device for humidifying fuel and oxidant (air) to
increase relative humidity.
— Water treatment system. It includes, but is not limited to piping, circulating
water pumps, valves, sensor devices, water storage and replenishment
tanks, etc. When water generated by the power system is used for
humidifying fuel or oxidant or other uses, the particles and metal ions that
are harmful to the power system shall be removed.
— Control system. It consists of sensor devices, circuits, actuators, control
devices, and software programs that are necessary for regulation and
monitoring, so that the power system’s operating parameters are able to be
kept within the manufacturer’s given limits without human intervention, thus
ensuring the normal operation of the power system.
— Power regulating system. It includes, but is not limited to DC / DC or DC /
AC, circuits, etc. The output power of the fuel cell stack will, by regulating
current and voltage according to the requirements for the power required
for the internal device of the power system and the external output power,
provide the power output that meets the requirements of use.
— Ventilation system. A system that achieves air exchange inside and outside
the power system through forced or natural means.
— Fuel cell power system. It consists of all or part of the components in the
schematic diagram for the boundary of the power system, and is combined
with an energy storage module to form a fuel cell dynamic system.
According to its different structures, it can be divided into two types. all-in-
one and integrated.
 All-in-one system. All the components of the power system are loaded
into one shell; the display and control interface or function buttons can
be installed in the place where the operator can conveniently operate
according to the actual situation.
 Integrated system. All the components of the power system are
dispersedly installed on an industrial lift truck in accordance with the
structural space and the center of gravity of the industrial lift truck.
However, all the components are connected together through circuits
or piping to form a complete set of fuel cell power system.
2 Normative references
The following documents are essential to the application of this document. For
dated references, only the editions with the dates indicated are applicable to
3.2 Maximum power
It refers to the electric power that is output by the fuel cell power system under
peak operating conditions.
3.3 Idle conditions
The power system is in operating condition and is able to maintain its own
operation, but does not output power externally.
3.4 Efficiency of power system
It refers to the share of the energy consumed by the power system per unit time
converted into the effective electric power. It shall be calculated as the low heat
value (LHV) of hydrogen as required.
3.5 Fuel consumption
The amount of fuel consumed by the power system within a specified period of
time under specific conditions, in kilograms per hour (kg/h).
3.6 Fuel consumption rate
The amount of fuel consumed per unit time and unit power by the power system,
in grams per kilowatt-hour [g/(kW·h)].
3.7 Balance weight
It refers to the auxiliary quality that is added inside or outside the power system
to ensure the equilibrium and stable operation of the industrial lift truck.
4 General requirements
4.1 Integrity requirements of the power system
4.1.1 Overview
The design of the power system shall be able to meet the needs of the set
functions. Its composition may include the fuel cell module, fuel storage system,
fuel supply system, oxidant supply system, thermal management system,
humidifying system, water treatment system, control system, power regulating
system, ventilation system, etc. In addition, all components used in the power
system shall comply with the relevant national standards.
4.1.2 Fuel cell module
The fuel cell module shall meet the requirements of GB/T 29838-2013.
4.1.3 Fuel storage system
The connection device between the fuel storage system and the fuel cell
module shall meet the safety requirements for use. When refueling, the method
for fast fuel connector connection between the fuel storage system and the fuel
supply station shall comply with relevant pressure and safety standards and
regulations. The replenishment port of the non-standard fuel storage container
and the connector of the standard fuel storage container shall not be matched.
The hydrogen storage device, whether stationary or replaceable, disposable or
rechargeable, shall comply with relevant national standards of pressure and
safe use as well as regulatory requirements.
4.2 Output voltage of the power system
The output voltage of the power system shall meet the electrical input voltage
requirements of industrial lift trucks using the system, and comply with the
provisions of GB/T 17938-1999. Alternatively, USE the DC or AC input voltage
required by the industrial lift truck of the power system.
4.3 Safety protection
The automatic control system in the power system shall be able to automatically
control the normal operation of each subsystem, and provide appropriate sound,
light, or other equivalent methods in response to the abnormal changes in the
operation of the power system to alert the operator or automatically turn on the
interlocking device for safety protection, so as to ensure normal and safe
operation of the power system.
4.4 Requirements for startup characteristics
When the power system is tested for startup characteristics in accordance with
6.3, the time from startup to idle conditions shall comply with the manufacturer’s
regulations.
4.5 Power output characteristics
When tested in accordance with 6.4, the test results for the rated power,
maximum power and overload capacity of the power system shall comply with
the manufacturer’s regulations.
4.6 Dynamic response characteristics
The dynamic response characteristics mainly reflect the dynamic loading
response of the power system and its ability to adapt to load impact. PERFORM
a dynamic response test in accordance with 6.6. The response time of the
power system from idle conditions to rated power conditions, and the response
time from rated power conditions to maximum power conditions shall comply
integrated system according to the following requirements.
— All-in-one system. MEASURE the mass of the power system and balance
weight, respectively, including the mass of coolant and humidifying water.
Without affecting the equilibrium and stability of the industrial lift truck at
rest or in operation, the mass of the display and control interface or function
buttons located outsi...
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.