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QC/T 1229-2025: Fuel cell electric vehicles - Refuelling communication protocol
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| QC/T 1229-2025 | English | 439 |
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Fuel cell electric vehicles - Refuelling communication protocol
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QC/T 1229-2025
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Basic data | Standard ID | QC/T 1229-2025 (QC/T1229-2025) | | Description (Translated English) | Fuel cell electric vehicles - Refuelling communication protocol | | Sector / Industry | Automobile & Vehicle Industry Standard (Recommended) | | Classification of Chinese Standard | T47 | | Classification of International Standard | 43.120 | | Word Count Estimation | 22,221 | | Date of Issue | 2025-05-09 | | Date of Implementation | 2025-11-01 | | Issuing agency(ies) | Ministry of Industry and Information Technology of the People's Republic of China | QC/T 1229-2025: Fuel cell electric vehicles - Refuelling communication protocol---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/QCT1229-2025
Automobile Industry Standards of the People's Republic of China
Fuel Cell Electric Vehicle Hydrogen Refueling Communication Protocol
Released on May 9, 2025
2025-11-01 Implementation
CCS T 47
ICS 43.120
Ministry of Industry and Information Technology of the People's Republic of China issued
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Abbreviations and symbols 1
5 Physical Layer 2
6 Data Link Layer 3
7 Presentation Layer 4
8 Communication Data Definition and Requirements 4
9 Communication Process 7
10 Performance Requirements 8
11 Test Method 8
Appendix A (Normative) Hydrogenation Communication and Interface Schematic 10
Appendix B (Normative) Hydrogenation Equipment Connection Diagram 12
Appendix C (Normative) Escape and Unescaping of Control Characters 14
Table of Contents
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed and coordinated by the National Technical Committee for Standardization of Automotive Products (SAC/TC 114).
This document was drafted by. Shanghai Shunhua New Energy Systems Co., Ltd., China Automotive Technology and Research Center Co., Ltd., Dongfeng Motor Group
Co., Ltd., China Automotive Research Institute New Energy Vehicle Inspection Center (Tianjin) Co., Ltd., Shanghai Motor Vehicle Inspection and Certification Technology Research Center Co., Ltd.,
SAIC Maxus Automobile Co., Ltd., Toyota Motor (China) Investment Co., Ltd., Guangzhou Automobile Group Co., Ltd., Shanghai Jie Hydrogen Technology Co., Ltd.
Co., Ltd., BAIC Foton Motor Co., Ltd., and Faurecia (Shanghai) Hydrogen Energy Investment Co., Ltd.
The main drafters of this document are. Zhang Le, Lan Hao, Shi Jianpeng, Pan Xiangmin, Chen Ming, He Yuntang, Hao Dong, Liu Yi, Xu Nuo, Wu Guangquan, Yao Dongsheng,
Chen Pei, Li Dongmei, Wang Lijun, and Su Zhiyang.
Fuel Cell Electric Vehicle Hydrogen Refueling Communication Protocol
1 Scope
This document specifies the type, technical requirements and test methods of the hydrogen refueling communication protocol for fuel cell electric vehicles.
This document applies to fuel cell electric vehicles using compressed gaseous hydrogen.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.
document.
GB/T 24548 Terminology for Fuel Cell Electric Vehicles
GB/T 26779 Hydrogen refueling port for fuel cell electric vehicles
GB/T 34425 Hydrogen refueling gun for fuel cell electric vehicles
3 Terms and Definitions
The terms and definitions defined in GB/T 24548, GB/T 26779, GB/T 34425 and the following apply to this document.
3.1
refuelling communication protocol
During the hydrogen refueling process, the fuel cell electric vehicle and the hydrogen refueling machine follow the communication specifications for signal transmission through infrared devices.
Note. For the hydrogen refueling communication diagram, see Figure A.1 in Appendix A.
3.2
infrared transmitter
A device used to convert serial data signals into infrared light signals for transmission.
3.3
infrared receiver
A device used to convert infrared light signals into serial data signals for reception.
3.4
bit error ratio
The ratio of the number of error bits generated by noise, interference, loss or bit synchronization errors in the data stream in the channel to the total number of bits transmitted in a period of time
The ratio of special numbers.
4 Abbreviations and symbols
4.1 Abbreviations
The following abbreviations apply to this document.
Application Data. Data Packet
BOF. Start of frame character
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