GB/T 32879-2025
GB · 2025-06-30
Connector for battery box for electric vehicle replacement
1Key Takeaways
This standard specifies the technical requirements for battery box connectors used in electric vehicles. It covers the design, materials, performance, and testing methods of these connectors. The standard aims to ensure the safety, reliability, and interoperability of battery box connectors in electric vehicle applicat…
2Expert Interpretation
A comprehensive analysis of the GB/T 32879-2025 standard's technical requirements for battery box connectors in electric vehicle battery swapping systems, covering 21 core performance indicators, including electrical/hydraulic connector interchangeability, protection level, and service life, as well as 12 structural dimension specifications. Compared to the 2016 version, the new standard adds six new testing requirements, including flow resistance and airtightness, and applies to DC battery swapping systems below 1500V.
Standard Evolution and Scope of Application
| Version | Main Changes | Voltage Range | Applicable Vehicle Types |
|---|---|---|---|
| 2016 Version | Basic Technical Requirements | ≤1000V DC | Mainly Commercial Vehicles |
| 2025 Version | 6 New Test Requirements | ≤1500V DC | Covering Passenger Cars/Commercial Vehicles |
Core Performance Indicator Analysis
Key parameters of electrical connectors
- Protection level: The coupled state must meet both IPX7 (waterproof) and IPX9K (anti-high-pressure jet)
- Contact resistance: Power terminal ≤0.3mΩ (normal conditions), ≤1mΩ after vibration
- Service life: ≥10,000 plugging and unplugging times (insulation resistance ≥100MΩ must be maintained)
Special requirements for liquid connectors
| Item | Passenger car indicators | Commercial vehicle indicators |
|---|---|---|
| Flow resistance pressure drop | ≤38kPa at 25L/min | ≤27kPa at 50L/min |
| Leakage rate | ≤0.5mL/time (average of 1000 tests) | |
Technological Innovation Highlights
- Floating guide mechanism: Commercial vehicles require ±5mm three-dimensional floating, which is a larger tolerance than passenger cars (±3mm)
- 360° annular shield: Mandatory requirement for high-voltage interfaces (except for charging racks)
- Dual CAN communication: Standard charging CAN and power CAN signal channels
Implementation Recommendations
Notes in the design phase
- Electrical connector coupling sequence: Guide column → Protective ground → High voltage positive and negative poles → Low voltage power supply → Interlock
- Liquid connector material must be compatible with 50% ethylene glycol coolant
Test Verification Key Points
| Test Items | Key Parameters | Equipment Requirements |
|---|---|---|
| Temperature Shock | -40℃~125℃ (Electrical)/85℃ (Liquid) | Conversion Time≤30s |
| Vibration Test | 35g Half-sine Shock | 10 times each on three axes |
3Version History
GB/T 32879-2025
2025-06-30
5Citation Network
1
Cite this standard
8
Referenced herein
Standards that cite GB/T 32879-2025
Referenced by GB/T 32879-2025
GB/T 11918.1
GB/T 16935.1
GB/T 19596
GB/T 2408
GB/T 2423.17
GB/T 30038
GB/T 30512
GB/T 41481
6Frequently Asked Questions
What is GB/T 32879-2025?
GB/T 32879-2025 — Connector for battery box for electric vehicle replacement is an international standard developed by General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China. This standard specifies the technical requirements for battery box connectors used in electric vehicles. It covers the design, materials, performance, and testing methods of these connectors. The standard aims to ensure the safety, reliability, and...
What does GB/T 32879-2025 cover?
This standard covers: This standard specifies the technical requirements for battery box connectors used in electric vehicles. It covers the design, materials, performance, and testing methods of these connectors. The standard aims to ensure the safety, reliability, and interoperability of battery box connectors in...
Who should use this standard?
This standard is intended for organizations, professionals, and stakeholders involved in various industries and sectors. It is applicable to manufacturers, service providers, regulatory bodies, and certification organizations.
What is the latest version of GB/T 32879-2025?
The current published version is GB/T 32879-2025, published on 2025-06-30. Always check for amendments or pending revisions.
How do I purchase GB/T 32879-2025?
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