GB/T 32960.3-2025Technical specifications for remote service and management system for electric vehicles — Part 3: Communication protocol and data format (English PDF)

Foreword

This document was drafted in accordance with the provisions of GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents".

This document is Part 3 of GB/T 32960 "Technical specifications for remote service and management system for electric vehicles". GB/T 32960 has published the following parts. - Part 1: General principle; - Part 2: On-board terminal;

- Part 3: Communication protocol and data format; - Part 4: Conformance test.

This document replaces GB/T 32960.3-2016 "Technical specifications for remote service and management system for electric vehicles - Part 3: Communication protocol and data format". Compared with GB/T 32960.3-2016, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

a) ADD communication security requirements between platforms and between onboard terminals and platforms (see 5.1 and B.2.1 of Appendix B);

b) ADD the definition of terms for the minimum parallel unit of power batteries and the transmission requirements of voltage data, power battery temperature data, fuel cell stack data, supercapacitor data, supercapacitor extreme value data (see 5.2.3, 5.2.4, B.2.1 of Appendix B);

c) ADD the vehicle data transmission requirements after the vehicle is under high voltage after driving or charging is completed and during the thermal event alarm (see 5.2.4 and B.2.1 of Appendix B);

d) ADD the distinction of protocol version numbers (see 6.2);

e) ADD the definition of the response error flag (see 6.3.2);

f) ADD the data transmission format and definition of "Number of battery management systems", "Number of power battery packs corresponding to the battery management system", "Power battery pack coding"; DELETE the definition of the rechargeable energy storage device subsystem, changing it into distinguishing and collection of the number of BMS systems; DELETE the data transmission format and definition of "Number of rechargeable energy storage subsystems", "Rechargeable energy storage system coding length", "Rechargeable energy storage system coding" (see 7.1; 7.1 of the 2016 edition);

g) ADD the transmission format and definition of signature information (see 7.2.1, 7.2.2, B.3.5.2.1, B.3.5.2.2 of Appendix B), activation information, activation result response information (see B.3.5.5; B.3.5.6 of Appendix B);

h) ADD the power battery minimum parallel unit voltage data, power battery temperature data, fuel cell stack data, supercapacitor data, supercapacitor extreme value information type flag (see 7.2.3 and B.3.5.2.3 of Appendix B);

i) ADD the transmission format and definition of power battery minimum parallel unit voltage data (see 7.2.4.2 and B.3.5.3.2 of Appendix B), power battery temperature data (see 7.2.4.3 and B.3.5.3.3 of Appendix B), fuel cell stack data (see 7.2.4.6 and B.3.5.3.6 of Appendix B), supercapacitor data (see 7.2.4.10 and B.3.5.3.10 of Appendix B), supercapacitor extreme value data (see 7.2.4.11 and B.3.5.3.11 of Appendix B);

j) CHANGE the description of "rechargeable energy storage device voltage data" to "power battery minimum parallel unit voltage data" (see 7.2.4.2 and B.3.5.3.2 of

Appendix B ; B.3.5.3.8 of Appendix B of the 2016 edition); CHANGE the

description of "rechargeable energy storage device temperature data" to "power battery temperature data" (see 7.2.4.3 and B.3.5.3.3 of Appendix B; B.3.5.3.9 of

Appendix B of the 2016 edition);

k) DELETE the data format and definition of power battery extreme value (see 7.2.3.6 of the 2016 edition);

l) DELETE the rechargeable energy storage device voltage data (see B.3.5.3.8 of

Appendix B of the 2016 edition); DELETE the rechargeable energy storage

device temperature data (see B.3.5.3.9 of Appendix B of the 2016 edition);

m) CHANGE the vehicle speed, total voltage, total current range, insulation resistance value definition in vehicle data (see 7.2.4.1; 7.2.3.1 of the 2016 edition);

n) DELETE the format and definition of motor controller input voltage and motor controller DC bus current (see 7.2.3.2 of the 2016 edition); CHANGE the drive motor speed and drive motor torque range in the drive motor data (see 7.2.4.4; 7.2.3.2 of the 2016 edition);

o) CHANGE the "Fuel cell data" to "Fuel cell engine and onboard hydrogen system data"; CHANGE the definition of probe temperature value (see 7.2.4.5; 7.2.3.3 of the 2016 edition); ADD the format and definition of the remaining hydrogen percentage, high-voltage DC/DC controller temperature (see 7.2.4.5); DELETE the fuel cell voltage and fuel cell current data (see 7.2.3.3 of the 2016 edition);

p) DELETE the format and definition of the average fuel consumption rate per 100 kilometers in the engine state (see 7.2.3.4 of the 2016 edition);

q) CHANGE the vehicle position data transmission requirements (see 7.2.4.8; 7.2.3.5 of the 2016 edition);

r) ADD the "thermal event alarm" level and alarm identification bit; ADD the relevant alarm identification bits involved in the fuel cell engine and the on-board hydrogen system, fuel cell stack, supercapacitor system, drive motor; ADD the format and definition of alarm level data transmission (see 7.2.4.9);

s) ADD the gear state invalid/valid state identification (see A.1 of Appendix A);

t) CHANGE the vehicle static information list (see A.2 of Appendix A; A.2 of

Appendix A of the 2016 edition).

Please note that some of the contents of this document may involve patents. The issuing agency of this document does not assume the responsibility for identifying patents.

This document was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.

This document shall be under the jurisdiction of the National Technical Committee for Automobile Standardization (SAC/TC 114).

The drafting organizations of this document. China Automotive Technology and Research Center Co., Ltd., China Automotive Research and Inspection Center (Tianjin) Co., Ltd., China Automotive Data (Tianjin) Co., Ltd., Beijing Institute of Technology, Mercedes-Benz (China) Investment Co., Ltd., NIO Technology (Anhui) Co., Ltd., BYD Auto Industry Co., Ltd., Tsinghua University, Deep Blue Automotive Technology Co., Ltd., China National Heavy Duty Truck Group Co., Ltd., Seres Automotive Co., Ltd., Beijing Yicheng High-tech Technology Development Co., Ltd., Beijing National New Energy Vehicle Technology Innovation Center Co., Ltd., Tesla (Shanghai) Co., Ltd., General Motors (China) Investment Co., Ltd., China First Automobile Co., Ltd., Great Wall Motor Co., Ltd., Volkswagen (China) Investment Co., Ltd., Toyota Motor China Investment Co., Ltd., Honda Motor (China) Investment Co., Ltd., Nissan (China) Investment Co., Ltd., BMW (China) Service Co., Ltd.

The main drafters of this document. Zhang Zhaosheng, Zheng Tianlei, Yu Yang, Liu Shaohui, Dou Rupeng, Sun Wenjun, Zhang Kaiming, Li Gang, Zhu Hao, Jin Xiulian, Jiang Feng, Liang Qun, Wu Feng, Xu Jianbo, Wang Xu, Wang Zhenpo, Qian Li, Liu Peng, Wang Jia, Guo Xiaomeng, Zhou Lin, Ding Jie, Zheng Guangzhou, Ma Qizhen, Yan Jing, Li Xue, Wu Shaohua, Cheng Xuefeng, Zhang Qian, Zhen Jie, Zhu Pingqing, Zhu Tie.

This document was first published in 2016.This is the first revision.

Introduction

With the encouragement and support of a series of national policies, electric vehicle technology has developed rapidly and the scale of the industry has expanded rapidly. In order to improve the remote monitoring capabilities of electric vehicles, strengthen the supervision of electric vehicle operation safety, promote the technological progress and promotion and application of the electric vehicle industry, it is necessary to formulate a national unified standard for electric vehicle remote monitoring communication protocol. GB/T 32960 "Technical specifications for remote service and management system for electric vehicles" aims to establish a unified technical specification for electric vehicle remote service and management system, which is intended to consist of four parts.

- Part 1: General principles. The purpose is to establish the monitoring system of "onboard terminal-enterprise platform-public platform" in general and clarify the corresponding definitions.

- Part 2: On-board terminal. The purpose is to specify the functional requirements and performance requirements of the onboard terminal, to support the collection and upload of monitoring data.

- Part 3: Communication protocol and data format. The purpose is to specify the data upload protocol, unify the data packet structure and definition, data unit format and definition.

- Part 4: Conformance test. The purpose is to verify the consistency of the data protocol uploaded by the vehicle with the data protocol specified in the standard.

Technical specifications for remote service and management system for electric vehicles - Part 3: Communication protocol and data format

1 Scope

This document specifies the protocol structure, communication connection, data packet structure and definition, data unit format and definition in the remote service and management system for electric vehicles.

This document applies to the connection and communication between platforms and between onboard terminals and platforms in the remote service and management system for electric vehicles.

2 Normative references

GB/T 1988

GB 16735

GB 18030

GB/T 19596

GB/T 24548

GB/T 28816

GB/T 32960.1

GB/T 34014

GB 38031

GB/T 40855-2021

3 Terms and definitions

The terms and definitions defined in GB/T 19596, GB/T 24548, GB/T 28816, GB/T 32960.1, as well as the following terms and definitions, apply to this document.

4 General requirements

5 Communication connection

6 Data packet structure and definition

7 Data unit format and definition