Applications: Second-Life

Second-life energy storage extends the useful life of electric vehicle batteries by repurposing them for stationary applications. Batteries that no longer meet the performance requirements of an electric vehicle may retain sufficient capacity for energy storage, providing opportunities to reduce waste, extend battery life, and support new energy applications.

Battery energy storage systems using second-life EV batteries support applications by:

• Providing energy storage for commercial and industrial facilities
• Supporting demand charge management and peak shaving
• Enabling load shifting between off-peak and peak electricity periods
• Supporting electric vehicle charging infrastructure
• Providing backup power and supporting microgrid applications
• Enabling renewable energy integration
• Supporting utility grid services, including transmission and distribution upgrade deferral
• Extending the useful life of existing EV batteries before recycling

Second-life energy storage systems require accurate battery monitoring, reliable protection, and flexible system integration to accommodate repurposed battery cells, modules, and packs. Battery management solutions must support the characteristics of previously used batteries while enabling safe operation in stationary energy storage applications.

Nuvation Energy’s battery management systems provide:

• Cell-level voltage and temperature monitoring
• Nuvation Energy’s patented continuous cell balancing during operation
• Advanced State of Charge (SoC) and State of Health (SoH) algorithms
• Configurable operating parameters and battery protection thresholds
• Stack-level monitoring, diagnostics, and control
• Open-wire detection for improved fault detection and system diagnostics
• Ethernet-based communication for integration with power conversion and external control systems
• Secure integration with higher-level energy management and control systems
• Engineering, design, and manufacturing in the USA and Canada

Nuvation Energy provides configurable battery management systems and engineering services to support the integration of used EV batteries into stationary energy storage applications. Solutions accommodate different approaches to repurposing, from rebuilding battery systems using reclaimed cells and modules to integrating complete EV battery packs.

• Supports energy storage systems built from repurposed EV battery cells and modules
• Enables reuse of complete EV battery packs through custom pack control and integration
• Provides battery pack and energy storage system design services
• Supports custom battery management electronics and control solutions
• Addresses communication differences between automotive battery systems and stationary energy storage equipment
• Supports integration with power conversion systems and energy management controllers
• Provides mechanical, electrical, and system-level design services
• Supports thermal management and safety system design
• Provides engineering and system integration support for second-life deployments

Nuvation Energy’s modular battery management architecture supports second-life energy storage systems ranging from individual battery stacks to larger, multi-stack stationary installations. Configurable solutions accommodate different battery designs and integration requirements.

• Supports battery stacks up to 1500V DC with the G5 and G5 Plus BMS platforms
• Uses a distributed Cell Interface architecture for cell-level monitoring, balancing, and diagnostics
• Reduces wiring complexity and improves fault isolation
• Supports different battery configurations and system capacities
• Supports integration with power conversion systems and hybrid power applications
• Supports parallel stack aggregation through a Multi-Stack Controller
• Enables up to 16 parallel battery stacks to be managed as one unified battery
• Provides individual stack-level control within multi-stack systems

The Nuvation Energy Multi-Stack Controller provides centralized monitoring and control for mobile energy storage systems utilizing multiple battery stacks.

• Aggregates control of up to 16 parallel battery stacks
• Enables coordinated monitoring and control across battery stacks
• Centralizes communication between battery stacks and external systems
• Supports communication with power conversion and energy management systems
• Provides centralized system-level diagnostics and operational visibility
• Supports Ethernet-based communication
• Supports Modbus TCP communication
• Provides a browser-based operator interface
• Supports local and remote system access over Ethernet
• Aggregates system-wide faults, warnings, and battery diagnostics
• Supports customer-specific battery management algorithms through engineering customization

• UL 1973 Recognized for functional safety
• Designed to support UL 9540 system certification
• Tested across electrical, thermal, and fault conditions
• Supports safe operation in high-voltage energy storage environments
• CE compliant and compliant with UL/CSA/IEC 60730 – 1 Annex H functional safety requirements
• Multi-layered protection and diagnostic capabilities support system safety and uptime

• Engineered, tested, and manufactured in the USA and Canada
• Supports supply chain transparency and domestic sourcing requirements
• Reduces risk associated with overseas manufacturing and logistics delays
• Aligns with North American regulatory and procurement requirements
• Fully supported by US and Canadian engineering teams experienced in large-scale energy storage deployments

Contact Nuvation Energy to discuss battery management requirements for your second-life energy storage system.