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GB/T 47967-2026Communication protocol between station control system and battery swap system of battery swap station for electric commercial vehicles (English PDF)

电动商用车电池更换站站控系统与电池更换系统通信协议

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

July 30, 2026

Implementation date

February 1, 2027

Scope

GB/T 47967-2026 is the English-translated version of 电动商用车电池更换站站控系统与电池更换系统通信协议.

GB/T 47967-2026 is the Chinese standard "Communication protocol between station control system and battery swap system of battery swap station for electric commercial vehicles".

Its scope clause reads: This document specifies the ModbusTCP-based application layer between the station control system and the battery swapping system of electric commercial vehicle battery swapping stations.

Communication protocol, general requirements, interaction method and message requirements. This document applies to the communication between the electric commercial vehicle battery swapping station control system (hereinafter referred to as the "station control system") and the battery swapping system. communication. Its clauses include terms and definitions.

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Document preview — GB/T 47967-2026

National Standard of the People's Republic of China

ICS: 29.200
Classification: K 81

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1.Scope
2 Normative References
3.Terms and Definitions
4.Abbreviations
5.General Requirements
6.Interaction methods
6.1 Interaction Flow between Station Control System and Battery Replacement System
6.2 Interaction Exception Handling
6.4 Battery swapping stage
6.5 Portfolio Adjustment Phase
6.6 Standby Phase
7.Message Requirement
7.1 Station Control System Heartbeat Message
7.2 Prepare for battery swapping message
7.3 Battery Replacement System Heartbeat Message
7.4 Equipment Information Message
7.5 Parking guidance message
7.6 Parking location detection message
7.7 Parking location result feedback message
7.8 Battery Swapping Safety Monitoring Message
7.9 Start battery swapping message
7.10 Suspend message
7.11 Continuation Message
7.12 Termination Message
7.13 End Message
7.14 Emergency Stop Message
7.15 Initiation of portfolio rebalancing message
7.17 Battery Replacement System Status Message
7.18 Vehicle access control message
7.19 General Device Driver Message
7.20 Alarm Reset Message
7.21 Return to standby position message
Appendix A (Informative) Communication Data Structures
Appendix B (Normative) Operation Instructions/Operation Instruction Response Code
Appendix C (Normative) Battery Replacement System State Machine

1 Scope

This document specifies the ModbusTCP-based application layer between the station control system and the battery swapping system of electric commercial vehicle battery swapping stations.

Communication protocol, general requirements, interaction method and message requirements.

This document applies to the communication between the electric commercial vehicle battery swapping station control system (hereinafter referred to as the "station control system") and the battery swapping system.

communication.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

GB/T 19582.1 Industrial Automation Network Specification Based on Modbus Protocol Part 1.Modbus Application Protocol

GB/T 19582.3 Industrial Automation Network Specification Based on Modbus Protocol Part 3.Modbus Protocol in TCP/IP Implementation Guide

GB/T 29317-2021 Terminology for Electric Vehicle Charging and Swapping Facilities

GB/T 41868 Modbus TCP Security Protocol Specification

3 Terms and Definitions

The terms and definitions defined in GB/T 29317-2021, as well as the following terms and definitions, apply to this document.

3.1 Battery swap station

Battery swapping station

A facility that provides battery swapping services for electric vehicles.

[Source. GB/T 29317-2021, 3.1.2.1, with modifications]

3.2 station control system

Deployed at battery swapping stations, it manages charging and discharging equipment, electric vehicles, vehicle guidance systems, and battery swapping systems within the station, enabling current swapping.

It is a system that is controlled by the process and supports interaction with the charging and swapping operation service system.

3.3 Battery swap system

A system consisting of mechanical and electrical equipment for swapping the power batteries of electric vehicles.

3.4 Modbus TCP

A communication protocol that encapsulates the Modbus application layer protocol in TCP/IP packets and transmits them over Ethernet.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 33 pages — is available in the English PDF.

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