Master the art of installing salvaged EV high-voltage components with this detailed guide. Includes safety protocols, torque specs, and diagnostic checks for Chinese EV models.
Introduction
Upgrading salvaged high-voltage components (e.g., battery packs, PTC heaters) can revive your EV’s performance. However, improper installation risks electrical fires. Follow these steps for safe, compliant upgrades.
Key Sections
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Safety First
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De-energize the vehicle using OEM service mode (e.g., NIO’s "Deep Sleep" mode)
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Use 1,000V-rated insulated gloves and tools
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Battery Pack Installation
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Verify BMS compatibility (e.g., CATL vs. BYD battery protocols)
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Torque specifications: 45 N·m ±5% for module-to-pack bolts
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Electrical System Integration
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Test CAN bus communication with OBD-II scanners (e.g., Autel MaxiSys)
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Install thermal runaway sensors per GB/T 38031-2020 standards
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Post-Installation Diagnostics
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Run a 12V leak test using a multimeter
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Validate regenerative braking performance
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Conclusion
Proper installation of salvaged EV components requires technical expertise. When in doubt, consult certified technicians or refer to OEM service manuals.
