GB/T 39631-2020 in English
VALIDGeneral specification for servo motor system in air conditioning compressor of new energy vehicles
- Issued on:2020-12-14
- Implemented on:2021-07-01
- File Format:PDF
- Delivery:Within 1 day
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《GB/T 39631-2020新能源汽车空调压缩机用伺服电动机系统通用规范》由TC2（全国微电机标准化技术委员会）归口，主管部门为中国电器工业协会。
Introduction
Standard Overview
GB/T 39631-2020 specifies the terminology, technical requirements and test methods for servo motor systems for new energy vehicle air-conditioning compressors, and is applicable to the design and manufacture of permanent magnet synchronous motor systems for fully/semi-enclosed positive displacement refrigerant compressors.
Core technical requirements
| Technical indicators | Requirements | Test methods |
|---|---|---|
| Voltage range | 24V-600V DC (16 preferred values) | GB/T 18488.2-2015 |
| System efficiency | ≥76% (1kW) to ≥85.5% (5kW+) | GB/T 21418-2008 |
| Protection grade | Driver IP54, compressor assembly according to GB/T 22068 | GB/T 22068-2018 |
Key test methods
1. Insulation performance test
Use 50Hz sinusoidal wave voltage for voltage withstand test, leakage current ≤10mA (system below 500V). The stator winding of the motor needs to withstand:
- Below 250V: 500V/1min
- 250-1000V: 1000V/1min
2. Cleanliness control
Requirements for impurities inside the motor:
- Total mass ≤24mg (displacement 8-25cm³)
- Particle diameter ≤0.25mm
The test method refers to the solvent oil flushing method in Appendix A
Implementation suggestions
Design optimization direction
- Use permanent magnet synchronous motor to improve system efficiency to 90%+
- Optimize electromagnetic compatibility design to meet the radiation immunity requirements of GB/T 22068
- Select POE/PAG lubricants to ensure material compatibility
Production quality control
- Establish a process for testing the moisture content of electric motors (Appendix B Karl Fischer method)
- Implement vibration tests (50-250Hz, 30m/s² acceleration)
- Perform regular thermal cycle verification (-35℃~85℃)
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