ESS-1.5 MW-3.102 MWh Lithium Battery Energy Storage System Modular Design

The 1.5 MW / 3.102 MWh Battery Energy Storage System (BESS) is a high-integration, utility-grade liquid-cooled energy storage solution designed for distributed power stations, large industrial and commercial parks, new energy supporting projects and grid auxiliary service scenarios. Adopting a mature and optimized electrical architecture and modular cluster design, the system balances high energy density, operational flexibility and system reliability. Fully integrated with high-consistency long-cycle LFP battery cells, intelligent Battery Management System (BMS), full liquid cooling thermal management system, multi-layer safety protection mechanism and remote intelligent monitoring platform, the BESS supports stable grid-connected operation, flexible energy scheduling and unattended intelligent operation. With standardized prefabricated design, it enables rapid on-site installation, commissioning and grid connection, perfectly adapting to medium and large-scale user-side and grid-distributed energy storage project demands.

This energy storage system adopts industrial-grade reliable configuration, featuring outstanding operational stability, high safety redundancy and long cycle durability, capable of continuous and stable operation under various complex outdoor and industrial working conditions. The core technical parameters are listed as follows:

• Rated Power: 1.5 MW
• Rated Energy Capacity: 3.102 MWh
• Cell Type: High-safety long-cycle Lithium Iron Phosphate (LFP) cell
• Cooling Method: Full liquid cooling
• System Round-Trip Efficiency: ≥93%
• Protection Grade: IP65
• Operating Temperature Range: -20℃～+50℃ (derating-free full-load operation)
• Communication Protocol: CAN/RS485/TCP/IP, fully compatible with mainstream EMS and grid monitoring platforms
• Design Service Life: 10 years
• Cycle Life: ≥6000 cycles under standard working conditions
• Operation Mode: Grid-connected / off-grid / dual-mode switchable

Featuring 1.5 MW power and 3.102 MWh capacity configuration, the system adopts a highly integrated modular cluster structure, which effectively optimizes space utilization and reduces overall footprint compared with traditional discrete energy storage equipment. The factory pre-assembled and pre-commissioned design minimizes on-site construction workload and shortens project delivery, commissioning and grid-connection cycles. The standardized modular layout supports independent operation and flexible capacity expansion, enabling flexible combination to meet the capacity demands of different scale energy storage projects.

Equipped with a professional full liquid cooling thermal management system, the product realizes precise and uniform heat dissipation for each battery cell and cluster. The internal temperature difference is strictly controlled within 3℃, which effectively suppresses cell capacity attenuation, improves cell consistency, and avoids local overheating and thermal imbalance risks existing in traditional air-cooled systems. The system maintains high energy conversion efficiency during long-term full-load operation, ensuring stable and reliable system performance throughout the whole lifecycle.

The system builds a complete hierarchical safety protection system covering cell level, module level, cluster level and system level. It supports real-time monitoring of cell voltage, current and temperature, with comprehensive protection functions including overcharge, overdischarge, overcurrent, overvoltage and short-circuit protection. Equipped with smoke detection, gas monitoring, anti-condensation device and clean fire suppression linkage system, the BESS can realize real-time fault early warning, automatic fault isolation and emergency fire extinguishing. The whole machine adopts outdoor anti-corrosion, dustproof and waterproof design to adapt to harsh working environments such as high temperature, low temperature and high humidity.

Supported by local energy management system and cloud remote intelligent monitoring platform, the system realizes real-time operating data collection, automatic fault alarm, remote parameter debugging and operational data analysis. It supports multiple intelligent operation strategies including peak shaving and valley filling, tariff arbitrage and grid demand response, achieving long-term unattended operation. The optimized system structure and reliable hardware configuration greatly reduce daily manual maintenance workload and equipment failure rate, effectively lowering the whole lifecycle operation and maintenance cost.

The 1.5 MW / 3.102 MWh full liquid-cooled energy storage system features high efficiency, high safety and strong environmental adaptability, covering multiple mainstream energy storage application scenarios:

• Large Industrial & Commercial Energy Storage: Realizes peak-valley electricity price arbitrage and peak load reduction, effectively cutting enterprise demand electricity charges and overall power consumption costs.
• Distributed New Energy Matching: Cooperates with photovoltaic and wind power generation systems to smooth power output fluctuation, suppress grid impact caused by new energy intermittency, and improve new energy local consumption rate.
• Grid Auxiliary Services: Provides peak regulation, frequency modulation and voltage stabilization services for local power grids, optimizes grid load distribution, and improves power supply stability and power quality.
• Microgrid & Independent Power Supply: Serves as core energy storage equipment for industrial park microgrids, island microgrids and remote power supply areas, ensuring safe and stable power supply under off-grid operating conditions.
• Critical Load Backup Power: Provides reliable emergency power guarantee for industrial production lines, data centers and key public facilities to avoid economic losses from sudden power outages.