FGI 125kW/261kWh Liquid-Cooled Energy Storage Cabinet – High Efficiency, All-in

Features

I. Product Capacity

FGI’s liquid-cooled industrial and commercial energy storage system offers a base capacity of 125kW/261kWh (0.5P). Designed with a modular architecture, the system allows flexible expansion based on project needs.

Up to 10 energy storage cabinets can be connected in parallel, supporting a total capacity range from 125kW to 1250kW and 261kWh to 2610kWh, meeting the requirements of energy storage projects at various scales.

II. Product Composition

The system integrates seven core subsystems, ensuring stable and reliable performance across diverse applications and environmental conditions:

• Battery System
  Responsible for energy storage and release, it enables battery data collection, status monitoring, and protection control.

• Energy Management System (EMS)
  Manages power dispatch strategies and performs real-time monitoring, control, and power flow regulation.

• Power Conversion System (PCS)
  Ensures bidirectional conversion between the battery's DC side and the grid's AC side.

• Fire Protection System
  Provides early detection, real-time alarms, and efficient fire suppression for enhanced safety.

• Temperature Control System
  Utilizes liquid cooling technology to precisely regulate battery temperature and improve thermal consistency.

• Auxiliary Power Supply System
  Delivers stable power to all internal components and subsystems.

• Dynamic Environment Monitoring System
  Continuously monitors internal temperature, humidity, and water ingress, ensuring early detection of abnormal conditions.

III. Product Advantages

✔ High-Performance Lithium Iron Phosphate Batteries
Features high safety, energy density, and long cycle life, suitable for various commercial and industrial applications at a 0.5P rate.

✔ Efficient Liquid Cooling Technology
Improves temperature uniformity across cells, extends battery lifespan, enhances safety, and boosts cost-effectiveness.

✔ Dual Fire Protection Strategy
Combines cabinet-level and PACK-level fire detection and suppression for early intervention and maximum safety.

✔ Modular and Space-Saving Design
Each cabinet is compact, easy to transport and install, and highly adaptable to different sites. System capacity can be scaled from 1 to 10 units per group, with support for multi-group configuration.

✔ AC-Side Parallel Connection
Avoids internal circulation between battery clusters, further extending battery life and system efficiency.

✔ Intelligent Cloud-Based Management
Supports 24/7 real-time monitoring, remote O&M, data-driven analysis of SOC/SOH conditions, and self-optimization of control strategies, ensuring optimal operation and reduced battery degradation.

✔ Comprehensive Protection Functions
The cabinets feature anti-corrosion, fire resistance, waterproofing, dustproofing, shock resistance, and UV protection, offering superior structural strength and operational stability.

IV. Safety-Oriented Internal Layout

To enhance safety, reduce misoperation risk, and improve long-term system reliability, the internal design separates the cabinet into independent electrical and battery compartments. These compartments are isolated using thermal insulation and flame-retardant materials, effectively minimizing fire hazards and lowering operating costs.

Technical Specifications

Product Application Scenarios

Scene 1——User-side energy storage

Maximizing Value with User-Side Energy Storage

The user-side energy storage system is designed to charge during off-peak or flat-rate electricity periods and discharge during peak demand times, enabling users to profit from electricity price differentials through peak shaving and valley filling.

This system also supports demand-side management, helping to reduce short-term peak loads and lower basic electricity charges. By supplying stored energy during high-load periods, it enhances power availability and enables flexible capacity expansion, ensuring stable operation even under fluctuating demand conditions.

Scene 2——Photovoltaic storage and charging integration

Enhancing Charging Station Efficiency with PV-Storage-Charging Integration

Urban distribution networks are often under high pressure from short-term capacity expansion, leading to insufficient power supply in some areas. As a result, many charging stations are unable to operate at full capacity, limiting their revenue potential.

By integrating energy storage into photovoltaic (PV) storage and charging systems, surplus solar energy can be absorbed during periods of high PV generation or stored during low electricity price periods. The stored energy can then be discharged during peak consumption hours and high-price periods, helping to:

• Relieve grid stress in urban distribution networks

• Stabilize energy supply for charging stations

• Boost operational efficiency and revenue

This approach not only supports the sustainable development of electric vehicle infrastructure, but also optimizes energy usage and cost savings.

Scene 3——Microgrid

Reliable Power for Remote and Off-Grid Areas

In remote regions where grid power is unstable or unavailable, the energy storage system can be combined with distributed energy sources—such as solar, wind, or diesel generators—to form a small-scale microgrid. This integrated solution ensures a reliable, continuous power supply, meeting the electricity demands of off-grid or weak-grid areas effectively.

Production Base: Jincheng Road, Economic Development Zone, Wenshang County, Jining City, Shandong Province, China

Email: overseas@fengguang.com