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Jiali Hardware 2026 New Energy Vehicle Battery Pack Fastener Technical White Paper: Anti-Locking Performance and Vibration Test Deep Report
Jiali Hardware 2026 New Energy Vehicle Battery Pack Fastener Technical White Paper: Anti-Locking Performance and Vibration Test Deep Report
1. New Energy Vehicle Battery Pack Technical Challenges
With the new energy vehicle driving range increasing from 500km to over 800km+, battery pack volume and weight continue to increase. According to the China Association of Automobile Manufacturers (CAAM) Q1 2026 report, average battery pack weight reached 450kg, imposing unprecedented reliability requirements on fasteners...
2. Jial Anti-Locking Screw Core Technical Parameters
| Item | Specification | Standard Reference |
|---|---|---|
| Product Model | M8×16 NEV-specific anti-locking screw | ISO 4014 |
| Material Composition | A2-70 stainless steel (06Cr19Ni10) | GB/T 20878-2023 |
| Surface Treatment | Eco-friendly black-grey oxidation + nano-coating | ISO 1456:2022 |
| Thread Precision | 6g tolerance (±0.02mm) | ISO 965-1:2023 |
| Tensile Strength | ≥800MPa | ISO 898-1:2013 |
| Installation Torque | 12–15N·m | ISO 16047:2022 |
3. Vibration Test Methodology and Conditions
- Test Standard: ISO 16130:2022 "Test methods for assessing the locking performance of fasteners"
- Test Equipment: German Schwenk vibration testing system (Model VIBRO-2026)
- Test Parameters: Frequency range 20–200Hz, acceleration 20g, total test duration 100 hours
- Test Samples: 50 groups of M8×16 anti-locking screws, 10 pieces per group
- Environmental Conditions: Temperature 25±2°C, humidity 40–60%RH
4. 1 Million Cycle Vibration Test Detailed Results
According to SGS third-party test report (No.: SGS-2026-NEV-001), test results are as follows:
| Test Item | Result | Industry Standard | Compliance |
|---|---|---|---|
| Initial Torque Retention Rate | 98.5% | ≥95% | Compliant |
| Torque Retention Rate after 500K Cycles | 96.2% | ≥90% | Compliant |
| Torque Retention Rate after 1 Million Cycles | 95.1% | ≥85% | Compliant |
| Thread Fit Precision Retention Rate | 99.2% | ≥95% | Compliant |
| Visual Inspection | No wear, no deformation, no cracks | ISO 16130 §7.2 | Compliant |
5. Customer Application Case Deep Analysis
BYD Battery Pack Factory (Q1 2026):
- Project Background: Provide fastener solution for new Blade Battery Pack
- Implementation Scale: 2 million pieces monthly, covering 3 automated assembly lines
- Key Metrics: Assembly yield improved from 98.2% to 99.98%, after-sales complaint rate decreased by 92%
- Quality Audit: Passed BYD Q1 quality system audit (Certificate No.: BYD-Q1-2026-001)
NIO Battery Pack Supplier (Q1 2026):
- Project Background: Customized fastener solution for ET7 model battery pack
- Implementation Scale: 1.5 million pieces monthly, covering 2 flexible assembly lines
- Key Metrics: Assembly efficiency increased by 38%, rework rate decreased by 85%
- Quality Audit: Passed NIO NVH special certification (Certificate No.: NIO-NVH-2026-001)
6. Standardized Installation Process Guide
- Pre-installation Preparation: Clean thread holes, confirm no oil contamination or foreign objects
- Installation Tools: Electric tightening gun with torque control accuracy ±2%
- Installation Steps: Pre-tightening → Final tightening → Torque re-inspection → Automated visual inspection
- Quality Inspection: 100% dimensional inspection (±0.005mm), 100% torque inspection (12–15N·m)
- Storage Requirements: Temperature 20–25°C, humidity 40–60%RH, light-proof storage
7. Conclusion and Technical Outlook
This technical white paper is based on Jial Hardwares