QC/T 1204.5-2024 PDF English
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QC/T 1204.5-2024: Compatibility of on-board battery swap system for battery electric passenger vehicles - Part 5: Communication between electric vehicle and battery pack
---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/QCT1204.5-2024
QC
AUTOMOTIVE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040
CCS T 36
Compatibility of On-board Battery Swap System for Battery
Electric Passenger Vehicles - Part 5: Communication
between Electric Vehicle and Battery Pack
ISSUED ON: JULY 19, 2024
IMPLEMENTED ON: JANUARY 1, 2025
Issued by: Ministry of Industry and Information Technology of the People’s
Republic of China.
Table of Contents
Foreword ... 3
Introduction ... 4
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 5
4 General Principles ... 6
5 Network Topology ... 6
6 Message Format and Requirements for Network Communication Topology of
Complete Vehicle and BMS ... 7
Appendix A (informative) Network Management Message Format ... 21
Bibliography ... 22
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives
for Standardization - Part 1: Rules for the Structure and Drafting of Standardizing Documents.
This document is Part 5 of QC/T 1204 Compatibility of On-board Battery Swap System for
Battery Electric Passenger Vehicles. QC/T 1204 has issued the following parts:
---Part 1: Battery Swap Electrical Interface;
---Part 2: Battery Swap Cooling Interface;
---Part 3: Battery Swap Mechanism;
---Part 4: Battery Swap Pack;
---Part 5: Communication between Electric Vehicle and Battery Pack.
Please be noted that certain content of this document may involve patents. The institution
issuing this document does not undertake the responsibility of identifying these patents.
This document was proposed by and shall be under the jurisdiction of National Technical
Committee 114 on Auto of Standardization Administration of China (SAC/TC 114).
The drafting organizations of this document: China Automotive Technology and Research
Center Co., Ltd.; NIO Technology (Anhui) Co., Ltd.; Ningde Contemporary Amperex
Technology Co., Ltd. (CATL); Aulton New Energy Automotive Technology Co., Ltd.; BAIC
BJEV Co., Ltd.; SAIC Motor R&D Innovation Headquarters; Hefei Gotion High-tech Co., Ltd.;
Zhejiang Jizhi New Energy Automobile Technology Co., Ltd.; CALT Co., Ltd.; Hangzhou
Hongtu Intelligent Energy Technology Co., Ltd.; Shanghai ENERGIEX Technology Co., Ltd.;
New Energy Automotive Inspection Center (Tianjin) Co., Ltd. of China Automotive
Technology & Research Center Co., Ltd.; BYD Auto Industry Co., Ltd.; Shanghai Qiyuan
Green Power Co., Ltd.; Beijing Shengneng Energy Technology Co., Ltd.
The main drafters of this document: Zheng Tianlei, Wang Fang, Gao Yifeng, Zhang Kai, Yuan
Wenjing, Cao Dongdong, Zeng Shizhe, Li Pan, Hu Panpan, Wang Guokang, Zhou Yu, Xu Bin,
Guo Piqing, Wang Feng, Li Yujun, Li Yang, Zhang Baoqiang, Wu Guanjun, Zhang Jun, Liu
Lifang, Wen Chao.
Compatibility of On-board Battery Swap System for Battery
Electric Passenger Vehicles - Part 5: Communication
between Electric Vehicle and Battery Pack
1 Scope
This document specifies the communication rules and requirements between battery swapping
vehicles and battery packs for battery electric passenger vehicles.
This document is applicable to the communication between electric vehicle and battery pack in
the on-board battery swap system of battery electric passenger vehicles.
2 Normative References
The content of the following documents constitutes indispensable clauses of this document
through normative references in the 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 19596 Terminology of Electric Vehicles
GB/T 32960.3 Technical Specifications of Remote Service and Management System for
Electric Vehicles - Part 3: Communication Protocol and Data Format
GB/T 34014 Coding Regulation for Automotive Traction Battery
3 Terms and Definitions
The terms and definitions defined in GB/T 19596, and the following are applicable to this
document.
3.1 battery management system; BMS
A system that monitors the status of the battery (temperature, voltage and state of charge, etc.),
can provide communication, security, battery cell balancing and management control for the
battery, and provide communication interface with application equipment.
3.2 frame
A series of data bits that constitute a complete message.
3.3 messages
One or multiple “CAN/CANFD data frames” with the same parameter group number.
3.4 available energy
The energy that can be released from the current battery under specific discharge conditions.
3.5 insulation resistance
The equivalent resistance value of the high-voltage system to ground.
3.6 electronic control unit; ECU
An on-board computer composed of a microcomputer and peripheral circuits.
3.7 diagnostic trouble code; DTC
A 4-byte value used to identity the type of fault, associated fault mode and the number of
occurrences.
3.8 unified diagnostic services; UDS
ECU controllers with diagnostic functions implement unified diagnostic service standards.
4 General Principles
4.1 The communication network between electric vehicle and BMS of the replaceable battery
pack shall adopt CAN2.0B / CAN FD / wireless communication protocol.
4.2 The communication between electric vehicle and BMS of the replaceable battery pack shall
satisfy the UDS diagnostic protocol.
4.3 The BMS of the replaceable battery pack shall monitor and report the high-voltage
insulation resistance.
4.4 The BMS of the replaceable battery pack shall monitor and report the high-voltage interlock
status.
4.5 The BMS of the replaceable battery pack with battery thermal management function shall
implement temperature monitoring of the battery cooling interface.
4.6 Diagnostic services shall refer to ISO 14229 and ISO 15765.
5 Network Topology
The network communication topology composed of the vehicle electronic control unit ECU and
BMS is shown in Figure 1.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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