QC/T 1242-2025 Compatibility ofon-board battery swap system for battery electric passenger vehicles-Part 1: Battery swap couple English, Anglais, Englisch, Inglés, えいご
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ICS
T
Professional Standard of the People's Republic of China
QC/T 1242-2025
Compatibility of on-board battery swap system for battery electric passenger vehicles - Part 1: Battery swap couple
纯电动乘用车车载换电系统互换性 第1部分：换电电气接口
(English Translation)
Issue date: 2025-12-17 Implementation date: 2026-07-01
Issued by the Ministry of Industry and Information Technology of the People's Republic of China
Contents
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Basic requirements for the electrical interface of battery swap
5 Definition of the electrical interface of battery swap
6 Design of the electrical interface of battery swap
7 Type, installation dimensions and definition of the electrical interface of battery swap
Appendix A (Informative) Type of the electrical interface of battery swap
Appendix B (Informative) Installation dimensions of the electrical interface of battery swap
Appendix C (Informative) Definition of the electrical interface of battery swap
Introduction
0.1 Objective
The unification of mechanical configurations and electrical interfaces is a prerequisite for battery swapping. QC/T XXXXInterchangeability of On-board Battery Swapping Systems for Battery Electric Passenger Carsis planned to consist of five parts, aiming to standardize the interchangeability of on-board battery swapping systems for battery electric passenger cars, thereby achieving interchangeability among vehicles, swappable battery packs, and battery swap stations.
—Part 1: Electrical Interface for Battery Swapping.Specifies the type, structure, and dimensions of the electrical interface.
—Part 2: Cooling Interface for Battery Swapping.Specifies the type, structure, and dimensions of the cooling interface.
—Part 3: Battery Swapping Mechanism.Specifies the type, structure, and dimensions of the mechanism.
—Part 4: Swappable Battery Pack.Specifies the external profile type, structure, and dimensions of the battery pack.
—Part 5: Communication Between Vehicle and Battery Pack.Specifies the necessary communication parameter requirements and communication protocol messages for vehicles and battery packs.
02 Statement on Related Patents
The issuing body of this document draws attention to the fact that compliance with this document may involve the use of patents related to the electrical interface types and dimensions specified in Appendices A and B.
The issuing body of this document takes no position regarding the authenticity, validity, or scope of these patents.
The patent holder has committed to the issuing body of this document that they are willing to negotiate patent licensing agreements with any applicant under reasonable and non-discriminatory terms and conditions. The statement of the patent holder has been filed with the issuing body of this document.
Table 1 lists the patent holders who hold patents related to this document.
Table 1 Information on Patent Holders Related to Patents Involved in This Document
Battery Swap System Interchangeability for Battery Electric Passenger Cars - Part 1: Electrical Interface for Battery Swap
1 Scope
This document specifies the basic requirements, interface definitions, interface design, interface types, installation dimensions, and definitions for the electrical interface of the battery swap system for battery electric passenger cars.
This document applies to the onboard battery swap system for battery electric passenger cars.
2 Normative References
The following documents, through normative reference in the text, constitute indispensable provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 19596 Terminology of electric vehicles
GB/T 40032-2021 Safety requirements for battery swap of electric vehicles
3 Terms and Definitions
The terms and definitions defined in GB/T 19596 and the following apply to this document.
3.1
battery swap
A process of replenishing electric energy for an electric vehicle by quickly replacing the traction battery system via dedicated equipment or manual assistance.
Note: The complete battery swap process generally does not exceed 5 minutes.
[Source: GB/T 40032-2021, definition 3.1]
3.2
electrical interface of battery swap
Used for connecting the battery swap system to the vehicle or battery swap station, for transmitting electrical energy, electrical signals, and communication data. It generally includes a high-voltage electrical interface and a low-voltage electrical interface.
4 Basic Requirements for the Electrical Interface of Battery Swap
4.1The terminals of the high-voltage electrical interface shall have a rated operational voltage not less than 1000 V, and the single-terminal continuous maximum current shall not be less than 150 A.
4.2The terminals of the low-voltage electrical interface shall have a rated operational voltage not less than 16 V, and the single-terminal continuous maximum current shall not be less than 5 A.
4.3The electrical interface of battery swap shall have a protective earth. The minimum cross-sectional area of its circuit shall be not less than half of the cross-sectional area of the power terminals.
4.4The high-voltage electrical interface should have a 360° annular shielding function.
4.5The electrical interface of battery swap should have a connection signal for activating the Battery Management System (BMS).
4.6The electrical interface of battery swap should have 2 CAN signal lines: charging CAN and vehicle CAN. Diagnostic CAN, etc., can be expanded based on requirements.
4.7The electrical interface of battery swap shall have a connection status feedback signal and should have a power terminal temperature detection signal.
4.8The electrical interface of battery swap shall have a guiding structure to ensure its connection is accurate and reliable.
4.9The low-voltage electrical interface should reserve expandable pins for compatibility and expandability.
5 Definition of the Electrical Interface of Battery Swap
The definition of the electrical interface of battery swap is shown in Table 2.
