Corvus Dolphin NxtGen ESS – Energy

The Corvus Dolphin NxtGen ESS – Energy is the high-energy variant of Corvus Energy's Dolphin NxtGen marine energy storage system. It offers high energy density in a space-efficient, lightweight package for vessels with long, slow charge and discharge cycles, in both hybrid electric and all-electric applications.

Key features

• Low C-rate for slow charge and discharge, preserving battery life
• Low weight for improved vessel efficiency and reduced structural demands
• Rack-free design: modules stack in various configurations to use available battery room space
• Designed for voltages up to 1200 VDC; capacity and voltage scalable to vessel requirements
• Passive single-cell thermal runaway isolation, not dependent on active cooling
• Battery Management System (BMS) with remote monitoring
• Plug-and-play connections; enhanced EMI immunity for maritime environments

Technical data

• Chemistry: lithium-ion NCA
• Module size / increments: 8.2 kWh / 50 VDC
• C-rate peak (discharge/charge): 1.0CP / 1.0CP for 10 seconds
• C-rate continuous (discharge/charge): 0.4CP / 0.4CP
• Module dimensions: 666 (l) x 500 (w) x 100 (h) mm
• Module weight: 44.5 kg
• Single string range: 33–197 kWh / 130–1205 VDC
• Max gravimetric density (string): 172 Wh/kg (5.96 kg/kWh)
• Max volumetric density (string): 212.5 Wh/l
• Ingress protection: IP66 module, IP56 system
• Cooling: forced air

Safety

• Thermal runaway anti-propagation: passive, cell-level, DNV Pt6 Ch2 Option 1
• External fire suppression per SOLAS, class and Corvus recommendation
• Redundant fail-safe disconnect for over-temperature, over-voltage and under-voltage
• Integrated cell-level fusing for short-circuit protection
• Hard-wired emergency stop circuit; integrated ground fault detection

Approvals

• Type approval: BV, DNV, LR, RINA
• Cybersecurity type approval: DNV

Applications

Ferries, yachts, canal boats, tourist and sightseeing vessels.