QC/T 1204.5-2024Interchangeability of on-board battery swap systems for battery electric passenger vehicles - Part 5: Communication between vehicle and battery pack (English PDF)

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.

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.

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.