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GB/T 24548-2009 English PDF (GBT24548-2009)

GB/T 24548-2009 English PDF (GBT24548-2009)

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GB/T 24548-2009: Fuel cell electric vehicles -- Terminology
GB/T 24548-2009
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
T 04
Fuel cell electric vehicles - Terminology
ISSUED ON. OCTOBER 30, 2009
IMPLEMENTED ON. JULY 1, 2010
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration Committee
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 4 
English index ... 13 
Foreword
This Standard was proposed by China National Development and Reform
Commission.
This Standard shall be under the jurisdiction of China National Automotive
Standardization Technical Committee.
The drafting organizations of this Standard. Shanghai Automotive Group Co.,
Ltd., China Automotive Technology and Research Center, Tongji University.
Main drafters of this Standard. He Yuntang, Wu Bing, Zhao Jingwei, Zhuang
Jianbo, Hou Shuiping, Yao Honghua.
Fuel cell electric vehicles - Terminology
1 Scope
This Standard specified the relevant terms and definitions of fuel cell electric
vehicles.
This Standard applies to electric vehicles and components which use gaseous
hydrogen fuel cell
2 Normative references
The following standards contain the provisions which, through reference in this
Standard, constitute the provisions of this Standard. For dated references, the
subsequent amendments (excluding corrections) or revisions do not apply to
this Standard. However, the parties who enter into agreement based on this
Standard are encouraged to investigate whether the latest versions of these
documents are applicable. For undated reference documents, the latest
versions apply to this Standard.
GB/T 19596 Terminology of electric vehicles
GB/T 20042.1 Proton exchange membrane fuel cell - Terminology
3 Terms and definitions
3.1 General
3.1.1 fuel cell
power generation device which directly converts external supplied fuel and
chemical energy in oxidant to electricity, heat and other reaction products via
electrochemical reaction
3.1.2 fuel cell electric vehicle; FCEV
vehicle which takes fuel cell system as power source or primary power source
3.1.3 cold start
start at standard ambient temperature after sufficient vehicle-soaking
NOTE. for a test program, the soaking time usually recommended shall be 12 h to 36 h; during
3.1.13 hydrogen permeation
hydrogen releasing when hydrogen goes through structural material
3.1.14 poisoning
fuel cell components, for example, fuel cell membrane electrode is polluted,
which causes catalyst performance degradation to weaken fuel cell
performance
3.1.15 recycle
the process of active ingredient recycling by collection, separation and
processing, etc.
3.1.16 stack rated pressure
air pressure at air inlet of fuel cell stack, at rated power
NOTE. Absolute pressure is recommended. If the measured pressure is used, it shall be
specified.
3.1.17 open circuit voltage
voltage when fuel cell stack is disconnected with external circuit
3.1.18 rated voltage
end voltage of stack at rated power under specific working conditions
3.1.19 rated current
current of stack at rated power under specific working conditions
3.1.20 output characteristics
characteristics of the relation between fuel cell voltage and current
NOTE. In many situations, current refers to current density of fuel cell. The curve of the
relation between fuel cell voltage and current is also called polarization curve.
3.1.21 rated power
the power of which the fuel cell stack can continue to work under certain
operating conditions specified by manufacturer
3.1.22 mass specific power
rated power of per unit of mass
the system which is used to maintain thermal balance of fuel cell system, to
recycle excess heat and perform auxiliary heating at the start of fuel cell system
3.2.2.5 ventilation system
the system in fuel cell system which discharges the gas in shell with help of
mechanical methods
3.2.2.6 water treatment system
the system used for water treatment of fuel cell system, recovery and
purification of produced water
3.3 vehicle hydrogen supply system
3.3.1 high pressure hydrogen storage cylinder
the device to store high pressure hydrogen
3.3.2 hydrogen fueling receptacle
connection device of hydrogen fuel filling at vehicle side
3.3.3 rated refueling pressure
normal working pressure under designed refueling and standard conditions
3.3.4 max. refueling pressure
the maximum refueling pressure within a safe operating range (usually 1.25
times rated refueling pressure)
3.4 Fuel cell electric vehicle system
3.4.1 complete fuel cell vehicle diagram
the diagram which indicates each component of fuel vehicle, as shown in Figure
3.5 Performance and test methods
3.5.1 Fuel cell safety and performance requirements
3.5.1.1 gas leakage
gas leakage phenomenon in gas supply system and fuel cell system, in addition
to normal exhaust and emptying
3.5.1.2 lower flammability limit; LFL
the minimum volume concentration of flammable gas burning in air
NOTE. hydrogen. 4%; carbon monoxide. 12.5%; methane. 5%; N- pentane. 1.5%; acetylene.
2.5%; ammonia. 15%
3.5.1.3 maximum allowable working pressure, MAWP
the maximum gage pressure at which system or part certified by relevant
regulations or instructions can work
NOTE. Pressure relief protection is set under this numerical value (or less than this numerical
value).
3.5.1.4 maximum operating pressure
the maximum working pressure of internal fuel and oxidant at which fuel cell
specified by manufacture can continuously work safely
3.5.1.5 allowable differential working pressure
the maximum pressure difference between each fluid specified by manufacturer,
of which the fuel cell module can withstand and not damage or permanently
lose functions or characteristics
3.5.1.6 maximum power
the maximum power value which the system or component can output
3.5.1.7 maximum operating temperature; MOT
the maximum transient or steady-state temperature of which the system or
component can perform non-failure work
3.5.2 Test methods for performance of fuel cell system
3.5.2.1 standby state
the state of which fuel cell system is well prepared for start and can start any
time under start order
3.5.2.2 cold state
at ambient temperature, the internal temperature of fuel cell system is same
with the external environment temperature; fuel cell system is at off state
3.5.2.3 idle state
the state of which fuel cell system is at working; all its output power are used to
maintain the consumption of its auxiliary system; net output power is zero
3.5.2.4 response time to rated power
the time of fuel cell system from idle state to rated power under normal working
state
3.5.2.5 dynamic response time
the time of fuel cell system from one state to another state under normal working
state
3.5.2.6 start response time to rated power
the time required by fuel cell system from standby state to rated power state,
including rated power cold start and rated power hot start
3.5.2.7 start response time to idle state
the time of fuel cell system from standby state to idle state, including idle cold
start and idle hot start; it can operate stably after it reaches to idle state
[Translator. 3.5.2.8 is not existed in Chinese version]
3.5.2.9 heat recovery efficiency (of a fuel cell power system)
the ratio be...
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