EV Battery Management System Solutions
High-Voltage DC Relays for Electric Vehicles
Electric vehicle battery management systems require specialized high-voltage DC relays that can safely interrupt high currents while maintaining reliability over millions of cycles.
HONGFA's HVDC relay solutions provide the safety, reliability, and performance needed for modern EV applications, from 400V to 1000V+ systems.
EV BMS Relay Challenges
High Voltage Switching
Modern EVs operate at 400V-1000V+, requiring relays with exceptional dielectric strength and arc suppression capabilities.
Safety Critical
BMS relays must provide fail-safe operation to protect against thermal runaway, overcurrent, and emergency disconnect scenarios.
Space Constraints
Limited space in battery packs requires compact relay designs without compromising performance or safety.
HONGFA HVDC Relay Solutions
Key Features:
- High Voltage Rating: Up to 1000VDC switching capability
- Current Capacity: 100A to 500A+ continuous current
- Arc Suppression: Advanced contact materials and chamber design
- Hermetic Sealing: IP67/IP69K protection for harsh environments
- Safety Certifications: UL, TÜV, and automotive standards
- Long Life: >1 million electrical operations
BMS Applications:
- Main Battery Disconnect: Emergency isolation of battery pack
- Pre-charge Circuit: Safe initial charging of system capacitors
- Positive/Negative Switching: Dual relay configurations
- Charging Control: AC and DC fast charging systems
- Fault Protection: Overcurrent and thermal protection
- Service Disconnect: Maintenance and repair isolation
Recommended HVDC Relay Specifications
| Parameter | 400V System | 800V System | 1000V+ System |
|---|---|---|---|
| Voltage Rating | 450VDC | 900VDC | 1200VDC |
| Current Rating | 200-300A | 300-500A | 100-200A |
| Coil Voltage | 12VDC | 24VDC | 24VDC |
| Dielectric Strength | 5kV AC | 8kV AC | 10kV AC |
| Operating Temp | -40°C to +85°C (automotive grade) | ||
Customer Success Stories
Leading EV Manufacturer
"HONGFA's HVDC relays have been instrumental in achieving our safety and reliability targets for our 800V battery platform. The consistent performance and automotive-grade quality give us confidence in our BMS design."
�?Chief Engineer, Battery Systems
Tier 1 BMS Supplier
"The technical support from LiTong helped us optimize our relay selection for both performance and cost. Their FAE team understood our unique requirements and provided excellent application guidance."
�?Senior Design Engineer
Ready to Design Your BMS Solution?
Contact our HVDC relay specialists for technical consultation and product recommendations.
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