The n3-BMS is a flexible, cell-chemistry-agnostic distributed Battery Management System designed to meet the highest safety and performance demands of heavy-vehicle OEMs. Fully ISO 26262 certified, it delivers next-generation features that tackle critical challenges in both safety and efficiency.

Unlike custom in-house designs, the n3-BMS is an off-the-shelf solution that dramatically shortens time-to-market. It eliminates years of engineering and certification effort—work that would normally require hundreds of documents, extensive testing, and rigorous safety validation.

Its architecture uses a two-layer software structure: a Base Software Layer (BSW) that contains all functional-safety elements, and an Application Software Layer (ASW) for everything else. This separation lets users fine-tune key BMS parameters without jeopardizing ISO 26262 compliance. Customers can also configure any number of CMU channels from 6 to 12 for maximum design flexibility.

Equipped with a dual-core lockstep CPU, an ASIL-C–compliant ASIC, and advanced algorithms, the n3-BMS delivers exceptional measurement accuracy while maintaining robust functional safety.

Features

Main Specifications

• 12 voltage channels per cell monitoring unit (CMU)
• Up to 360 cells in series
• 2 temperature channels per CMU
• 36 – 1000 V
• Up to 2000A
• Parallel string support (up to 10 modules in parallel)
• 3 CAN ports
• Extremely compact CMU for easy design fit (65 x 75 mm)
• CREATOR configuration software for flexibility in battery design

Safety 

• Certified Safety: ISO 26262 ASIL-C certified at 34.03 FIT rate (1x MCU 8x CMU) for robust functional safety. 
• Exceptional Reliability: No undetected single-point failures in the system. 
• Battery Protection: Open circuit detection for prompt issue identification. 

Usability

• Efficient Monitoring: Real-Time Clock (RTC) + logging for precise event tracking. 
• User-Friendly Configuration: BMS Creator PC tool simplifies setup and customization. 

Battery Life 

• Optimal Monitoring: High-frequency current sampling (6 ms) ensures accurate pulse detection. 
• Balanced Charging: Intelligent passive balancing at 200mA per cell extends battery life. 

Performance

• Advanced Software Architecture: Adaptive Base Layer Software/API/Application Layer Software architecture for outstanding software and battery parameter flexibility 
• Uncompromised Flexibility: Configurable safety and battery parameters without re-certification or software update. 
• Additional Features: With capabilities reaching up to 1000V, our system boasts an ultra-compact CMU size. Furthermore, it integrates HVIL and HVIM for enhanced functionality.