QC/T 1205.4-2024 English PDF (QCT1205.4-2024)

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QC/T 1205.4-2024: All-electric passenger vehicle power exchange platform - Part 4: Communication between battery pack and facilities
QC/T 1205.4-2024
QC
AUTOMOTIVE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040
CCS T 36
All-electric passenger vehicle power exchange platform -
Part 4: Communication between battery pack and facilities
ISSUED ON: JULY 19, 2024
IMPLEMENTED ON: JANUARY 01, 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 ... 6
2 Normative references ... 6
3 Terms and definitions ... 7
4 General ... 9
5 Network topology ... 10
6 Physical layer ... 11
7 Data link layer ... 11
8 Message format and content ... 12
Bibliography ... 35
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 4 of QC/T 1205 All-electric passenger vehicle power exchange
platform. The following parts have been released under QC/T 1205:
-- Part 4: Communication between battery pack and facilities.
Please note that some of the contents of this document may involve patents. The issuing
organization of this document is not responsible for identifying patents.
This document shall be under the jurisdiction of National Technical Committee of Auto
Standardization (SAC/TC 114).
Drafting organizations of this document: NIO (Anhui) Co., Ltd., China Automotive
Technology and Research Center Co., Ltd., Aulton New Energy Automotive
Technology Co., Ltd., Contemporary Amperex Technology Co. Limited, Hefei Gotion
High-tech Power Energy Co., Ltd., Beijing Electric Vehicle Co., Ltd., Zhejiang Jizhi
New Energy Vehicle Technology Co., Ltd., CATARC New Energy Vehicle Test Center
(Tianjin) Co., Ltd., SAIC Motor Corporation Limited Innovation Research and
Development Institute, Evogo Electric Service Technology Co., Ltd., Beijing
Shengneng Energy Technology Co., Ltd., SEPT New Energy Technology Co., Ltd.,
BYD Auto Industry Company Limited, Shenzhen Power Supply Bureau Co., Ltd.,
Hangzhou Hongtu Smart Energy Technology Co., Ltd., Shanghai Qiyuan Green Power
Technology Co., Ltd.
Main drafters of this document: Liu Caizhi, Liu Guibin, Wang Fang, Lu Wencheng, Cao
Dongdong, Zhang Kai, Hu Panpan, Zeng Shizhe, Zhang Zhixiang, Wang Chunchao, Xu
Bin, Wang Kai, Zhang Baoqiang, Wang Guokang, Zhang Jun, Wu Guanjun, Hou Yanli,
Wang Feng, Gao Yifeng, He Shan, Luo Haoliang, Jiang Yuanyuan.
All-electric passenger vehicle power exchange platform -
Part 4: Communication between battery pack and facilities
1 Scope
This document specifies the requirements for communication between battery packs
and facilities of all-electric passenger vehicles based on the Controller Area Network
(CAN) at the physical layer, data link layer and application layer.
This document applies to the communication between the swappable battery pack for
all-electric passenger vehicle and the battery swap infrastructure.
2 Normative references
The following documents are referred to in the text in such a way that some or all of
their content constitutes requirements of this document. For dated references, only the
version corresponding to that date is applicable to this document; for undated references,
the latest version (including all amendments) is applicable to this document.
GB/T 19596, Terminology of electric vehicles
GB/T 27930-2015, Communication protocols between off-board conductive
charger and battery management system for electric vehicle
GB/T 29317, Terminology of electric vehicle charging/battery swap
infrastructure
GB/T 29772-2013, General requirements of electric vehicle battery swap station
GB/T 32895-2016, Communication protocols for power cabin of electric vehicle
ISO 11898-1, Road vehicles - Controller area network (CAN) - Part 1: Data link
layer and physical signaling
ISO 11898-2, Road vehicles - Controller area network (CAN) - Part 2: High-
speed medium access unit
ISO 14229-1:2013, Road vehicles - Unified diagnostic services (UDS) - Part 1:
Specification and requirements
SAEJ 1939-11, Recommended practice for serial control and communication
vehicle network - Part 11: Physical layer, 250 kbits/s, twisted shielded pair
3.12
diagnostic trouble code
The universal numeric identifier that is used in the online diagnostic system to identify
the fault condition.
parameter group number; PGN
The 24-bit value that is used to uniquely identify a parameter group.
[Source: GB/T 27930-2015, 3.9, modified]
4 General
4.1 According to the requirements of 4.2 in GB/T 29772-2013, the battery swap station
may include: charging equipment, battery box replacement equipment, battery box
storage equipment, battery box transfer equipment, vehicle guidance system, battery
testing and maintenance equipment, monitoring room, distribution room, safety
protection facilities, driveway, parking space, business room and other auxiliary
facilities.
4.2 The battery swap station and the battery management system are electrically
connected through the battery box connector.
4.3 The communication between the battery swap station (battery swap infrastructure)
and the battery pack (battery management system) shall include communication of
charging functions and other functions.
4.4 The charging equipment and the battery management system of the battery swap
station are based on the communication protocol specified in GB/T 27930 for
communication of charging function, and the battery management system supports the
communication protocol specified in GB/T 32895-2016 for communication of other
functions. This communication mode is defined as Mode 1.
4.5 The charging equipment and the battery management system of the battery swap
station do not use the communication protocol specified in GB/T 27930 for
communication of charging function; instead, they use CAN standard frames or
customized charging interaction processes. This communication mode is defined as
Mode 2.
4.6 During the charging process, the charger and battery management system shall
monitor parameters such as voltage, current and temperature. At the same time, the
battery management system shall manage the entire charging process according to the
charging control algorithm.