LiTong
🚗 Automotive Solution

EV Battery Pack Protection Solution

Complete BMS Protection Using Sinofuse EV Series

🔋 Battery Management Systems⚡ High Voltage DC Protection🛡️ Automotive Grade Safety📋 Complete BOM Included
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EV BMS Protection

Solution Overview

Protecting the high-voltage battery pack is the most critical safety function in an electric vehicle. This comprehensive solution provides robust protection against catastrophic short circuits and sustained overloads using automotive-grade Sinofuse EV series fuses.

Key Protection Points

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Main Battery Circuit

Primary overcurrent protection for the main HV battery pack

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Auxiliary Systems

DC/DC converter and auxiliary load protection

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Pre-Charge Circuit

Controlled startup sequence protection

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Monitoring Systems

BMS and control circuit protection

Solution Specifications

ApplicationEV Battery Management Systems
Voltage Range400V - 1000V DC
Current Range50A - 400A
Breaking CapacityUp to 50kA @ 450V DC
StandardsISO 26262, IEC 60269
Automotive GradeAEC-Q200 Qualified
Temperature Range-40°C to +85°C
Customization✅ Available
Complete Solution Available

System Architecture

🔌 EV Battery Management System Protection

🔋HV Battery Pack
🛡️EV315 Main Fuse
PDU / Inverter

Simplified system architecture showing main protection points

Recommended Bill of Materials

The following Sinofuse components form a complete protection solution for EV battery management systems. Our FAE team can customize this BOM for your specific voltage and current requirements.

Protection PointRecommended PartSpecificationsKey FeaturesAvailability
Main Circuit ProtectionEV315-M-4Q315A, 450V DC, 10kAHigh breaking capacity, Automotive gradeIn Stock
High Voltage SystemsEV318-M-4Q318A, 1000V DC, 15kANext-gen platform ready, Ultra-high voltageIn Stock
Auxiliary DC/DC CircuitBS88-4 SeriesVariable ratings, 500V DCCompact mounting, PCB compatibleIn Stock
Pre-Charge CircuitRT16-00 SeriesLow current ratingsExcellent low-overload protectionIn Stock

Solution Advantages

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Safety & Reliability

  • High breaking capacity prevents thermal runaway
  • Automotive-grade qualification for harsh environments
  • Optimal I²t coordination with battery management
  • Fail-safe operation under extreme conditions
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Design & Integration

  • Compact form factors for space-constrained designs
  • Multiple mounting options (bolt-on, PCB)
  • ISO 26262 functional safety compliance
  • Proven in production automotive applications

Application Examples

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Passenger BEVs

Battery Electric Vehicles from compact cars to luxury sedans requiring reliable HV protection.

Voltage: 400-800VCurrent: 200-400A
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Commercial Vehicles

Electric buses, delivery trucks, and heavy-duty vehicles with high-power battery systems.

Voltage: 600-1000VCurrent: 300-500A
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High-Performance EVs

Motorsport and performance applications requiring ultra-fast fault clearing.

Voltage: 800-1000VCurrent: 400-600A

Engineering Support

Related Automotive Solutions

Ready to Implement This Solution?

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