GB/T 42855-2023 PDF English
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| GB/T 42855-2023 | English | 755 |
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Technical requirements of fuelling protocols for hydrogen fuel cell vehicles
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GB/T 42855-2023: Technical requirements of fuelling protocols for hydrogen fuel cell vehicles---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT42855-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.180
CCS F 19
Technical Requirements of Fueling Protocols for Hydrogen
Fuel Cell Vehicles
Issued on. AUGUST 6, 2023
Implemented on. DECEMBER 1, 2023
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 4
1 Scope... 5
2 Normative References... 5
3 Terms and Definitions... 5
4 Basic Requirements... 7
5 General Requirements for Fueling Protocol... 10
6 Fueling Boundary Conditions... 10
6.4 Fueling Mode... 11
7 Fueling Process... 11
8 Fueling Process Control... 13
Appendix A (informative) Schematic Diagram of Hydrogen Fueling Process... 17
Appendix B (informative) Fueling Process Control Flow... 19
Appendix C (informative) Recommended Values of Pressure Ramp Rate Based on
Pressure Control... 26
Appendix D (informative) Recommended Values of Average Flow Rate Based on Flow
Control... 39
1 Scope
This document specifies the basic requirements, general requirements, fueling boundary
conditions, fueling process and fueling process control requirements for high-pressure
hydrogen fueling protocols for hydrogen fuel cell vehicles.
This document is applicable to the fueling protocols for the hydrogen fueling facilities of
hydrogen fuel cell vehicles. The fueling protocols for the hydrogen fueling facilities of
hydrogen internal combustion engine vehicles, hydrogen energy ships, hydrogen energy
tramcars, hydrogen energy aircrafts, hydrogen energy engineering vehicles, hydrogen energy
power generation devices and hydrogen transportation vehicles, etc. may also take this
document as a reference.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in this text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 31138 Hydrogen Dispensers
3 Terms and Definitions
The terms and definitions defined in GB/T 31138, and the following terms and definitions are
applicable to this document.
3.1 fueling protocol
Fueling protocol refers to the operating boundary conditions and fueling strategies followed by
the hydrogen fueling facilities for fueling hydrogen fuel cell vehicles.
3.2 mass capacity of onboard hydrogen storage system
Mass capacity of onboard hydrogen storage system refers to the total mass of hydrogen stored
by the onboard hydrogen storage system when the hydrogen is at 15 C and under the nominal
working pressure.
3.3 dispenser pressure
Dispenser pressure refers to the hydrogen pressure in the hydrogen fueling pipeline within 1 m
upstream of the hydrogen dispenser breakaway valve.
3.4 target pressure
Target pressure refers to the hydrogen pressure expected from the onboard hydrogen storage
system at the end of fueling.
3.5 fuel delivery temperature
Fuel delivery temperature refers to the temperature of hydrogen in the hydrogen fueling pipeline
within 1 m upstream of the hydrogen dispenser breakaway valve.
3.6 pre-cooling temperature of hydrogen
Pre-cooling temperature of hydrogen refers to the temperature of hydrogen in the hydrogen
dispenser after passing through the pre-cooling heat exchanger.
4 Basic Requirements
4.1 Composition of Fueling Protocol
The fueling protocol shall include requirements for fueling performance target, boundary
conditions, fueling method, process control, fueling speed and target pressure, etc.
4.2 General Rules
4.2.1 The fueling protocol shall be formulated in combination with the hydrogen fueling method
and fueling performance target. In accordance with the parameters, such as.
4.3 Fueling Speed
The fueling speed shall satisfy the requirement that the onboard hydrogen storage cylinders do
not exceed the maximum allowable working temperature under the following conditions.
4.4 Target Pressure
The target pressure shall satisfy the requirement that the onboard hydrogen storage system does
not exceed the maximum working pressure under the following conditions.
4.5 Classification of Fueling Levels
4.5.2 Pressure rating
4.5.3 Fuel delivery temperature level
The pre-cooling temperature level shall be determined in accordance with the hydrogen
temperature range of the hydrogen fueling station. Hydrogen dispensers with the same pressure
rating at the hydrogen fueling station should use the same fuel delivery temperature level.
4.5.4 Category of on-board hydrogen storage system capacity
The category of on-board hydrogen storage system capacity is shown in Table 3.
5 General Requirements for Fueling Protocol
The fueling protocol shall satisfy the safe service conditions of the on-board hydrogen storage
system and shall ensure the on-board hydrogen storage system has the maximum state of charge
under the condition that the maximum allowable working temperature and maximum working
pressure are not exceeded.
6 Fueling Boundary Conditions
6.1 Basic Requirements
The fueling boundary conditions shall include fueling pressure rating, fuel delivery temperature
level, onboard hydrogen storage system capacity, hydrogen storage cylinder type, as well as the
ranges of initial fueling pressure, ambient temperature and maximum hydrogen fueling flow
rate, etc., among which, the initial fueling pressure, ambient temperature and fuel delivery
temperature shall comply with the requirements of GB/T 31138.
6.3 Pipeline Pressure Loss
When the hydrogen flow rate is 60 g/s, the hydrogen pressure loss between the hydrogen
dispenser and the onboard hydrogen storage cylinder shall be 3 MPa ~ 25 MPa.
6.4 Fueling Mode
Under the mode of fueling with communication, it shall be possible to obtain the following
information. capacity of onboard hydrogen storage system, type of hydrogen storage cylinder,
pipeline pressure loss, real-time temperature of hydrogen in onboard hydrogen storage system,
real-time pressure of onboard hydrogen storage system, maximum allowable fueling flow rate
and switching status of gas inlet globe valve of each hydrogen storage cylinder.
7 Fueling Process
NOTE. the schematic diagram of the hydrogen fueling process is shown in Appendix A.
7.1 Fueling with Non-communication
7.1.1 Fueling procedures
The fueling with non-communication includes fueling startup, fueling table selection, main
fueling process and fueling process detection, etc. The fueling startup shall include initial air
7.1.2 Shutdown of fueling
The pressure of the hydrogen dispenser shall not be greater than the target pressure, ore the
pressure of the hydrogen dispenser shall be set in accordance with the pressure difference
between the hydrogen dispenser and the onboard hydrogen storage system, so as to ensure that
the pressure of the onboard hydrogen storage system is not greater than the target pressure at
the end of fueling.
7.2 Fueling with Communication
7.2.1 Fueling process
The communication fueling process includes communication establishment, fueling startup,
fueling table selection, main fueling process, fueling process detection, fuel delivery
temperature level reduction and communication disconnected, etc.
7.2.2 Communication establishment
Before the hydrogen dispenser starts fueling, it shall be confirmed that effective communication
has been established with the onboard hydrogen storage system, and the following conditions
are satisfied.
7.2.3 Communication disconnection
When the hydrogen dispenser cannot obtain the data signal of the onboard hydrogen storage
system or does not comply with the requirements specified in 7.2.2, if it satisfies the conditions
of fueling with non-communication, the fueling shall be continued in accordance with the
procedures of fueling with non-communication, and shall comply with the following
requirements; otherwise, the hydrogen dispenser shall stop fueling within 3 s.
7.2.4 Shutdown of fueling
The hydrogen dispenser shall adopt the real-time temperature of hydrogen in the onboard
hydrogen storage system,
8 Fueling Process Control
8.1 Basic Requirements
8.1.1 Ambient temperature
The accuracy and installation position of the temperature sensor for measuring ambient
temperature shall comply with the requirements specified in GB/T 31138.During the fueling,
the ambient temperature shall be not lower than 40 C and not greater than 50 C. If this
temperature range is exceeded, it shall be handled in accordance with the ambient temperature
over-limit requirements specified in GB/T 31138.
8.1.3 Pressure measurement of hydrogen dispenser
The sampling frequency of pressure of the hydrogen dispenser shall not be less than 1 Hz, the
accuracy and installation position of the pressure sensor for measuring the pressure of the
hydrogen dispenser shall comply with the requirements specified in GB/T 31138.
8.1.7 Air tightness test
For H35 main fueling process, at least one initial air tightness test shall be conducted. For H70
main fueling process, when the pressure of the hydrogen dispenser reaches 30 MPa and 60 MPa,
the air tightness test on the fueling process shall be respectively conducted and shall comply
with the requirements specified in GB/T 31138.
8.1.8 Determination of fueling parameters
The determination of the fueling parameters shall comply with the following requirements.
8.2 Pressure Control Method
Within the main fueling time range, the pressure of the hydrogen dispenser shall increase in
accordance with the average pressure ramp rate of the target. Except for the first 15 s, within
the effective fueling time of the main fueling process, if the pressure of the hydrogen dispenser
is higher than the upper pressure limit or lower than the lower pressure limit of the hydrogen
dispenser, hydrogen fueling shall be stopped within 3 s.
8.3 Flow Control Method
Within the effective fueling time of the main fueling process, the average hydrogen fueling flow
rate of the hydrogen dispenser shall not exceed 5% of the average flow rate of the target and
shall comply with the following requirements.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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