Protocolos de segurança para montagem de cabos EV de alta tensão (ISO 6722 Atualizado)
Como veículos elétricos (VEs) tornar-se mais poderoso e difundido, a segurança dos conjuntos de cabos de alta tensão tornou-se uma prioridade máxima. ISO 6722 is the international benchmark for road vehicle wiring¡ªrecent updates have further raised the bar for EV applications. This article explores the latest safety protocols and how to implement them.
What Is ISO 6722?
International standard for single-core cables used in road vehicles.
Specifies performance for thermal, mecânico, and electrical durability.
Key Updates in the Latest Revision
Higher thermal class (up to 150¡ãC continuous)
Improved resistance to abrasion and fluid exposure
Enhanced flammability and fire resistance metrics
Design Considerations for HV EV Assemblies
Voltage Rating: Typically 600V¨C1000V DC
Conductor Types: Fine-stranded copper or aluminum
Isolamento: Cross-linked polyethylene (XLPE), silicone rubber, or TPE
Color Coding: Standardized for HV (por exemplo, orange for live)
Safety Protocols
Blindagem: Foil or braided shielding to reduce EMI and increase safety
Insulation Testing: Must exceed minimum dielectric breakdown voltage
Connector Locking Systems: Prevention of accidental disconnection
Thermal Protection: Heat shields or insulation jackets
Assembly Process Controls
Operator training and PPE
Automated cutting and crimping machines for consistency
Inline testing: Continuity, insulation resistance, HiPot
Testing Procedures
Environmental Testing: Humidity, temperature cycles
Mechanical Stress: Vibration and bending endurance
Electrical Safety: HiPot, insulation resistance, and spark testing
Certification Requirements
ISO/TS 16949 compliance for automotive quality systems
Third-party lab validation for new cable designs
Conclusão
With EVs operating at increasingly high voltages, compliance with ISO 6722 is non-negotiable. Adhering to robust safety protocols ensures product reliability and protects both the vehicle and its occupants.