GWB3762kwh liquid-cooled BESS

//Core Structure & Functions

1. Battery Cluster Module

Composed of high-consistency LiFePO4 (LFP) cells assembled into modules, which are further connected in series and parallel to form battery clusters. The total energy storage capacity of the system reaches 3762 kWh, featuring high energy density, low degradation, and long cycle life.

Cells are designed with explosion-proof and leak-proof structures, and each module is equipped with a thermal insulation layer to effectively prevent thermal runaway propagation, laying a foundation for safe system operation.

2. BMS (Battery Management System)

Adopts a three-level architecture (cell level, cluster level, system level) to monitor cell voltage, current, temperature, SOC (State of Charge), and SOH (State of Health) in real time. It provides millisecond-level protection against overcharge, over-discharge, overcurrent, short circuit, over-temperature, and insulation faults.

Supports active balancing to reduce voltage differences between individual cells, avoiding capacity degradation and safety risks caused by poor cell consistency.

3. Liquid-Cooling Thermal Management System

Utilizes an industrial-grade closed-loop liquid cooling system, including liquid cooling plates, cooling circuits, water pumps, condensers, and a temperature controller. It accurately maintains cell temperature within the optimal operating range of 20°C to 30°C.

Automatically activates preheating in low-temperature environments to prevent lithium plating; actively dissipates heat in high-temperature environments to avoid thermal runaway. It also reduces energy consumption and extends battery cycle life.

4. PCS Bidirectional Converter

Equipped with a standard 1250 kW high-power bidirectional PCS, enabling highly efficient bidirectional conversion between DC and AC power, with a conversion efficiency of ≥ 97.5%.

Supports both grid-tied and off-grid operation, allowing flexible switching between charging and discharging. It is suitable for peak shaving and valley filling, PV/wind accommodation, backup power, and other scenarios. It also provides harmonic suppression and reactive power compensation to ensure safe grid connection.

5. Safety Protection System

Covers four dimensions: electrical safety, fire safety, structural safety, and environmental safety:

• Equipped with high-voltage insulation monitoring, surge protective devices (SPD), and anti-islanding protection to eliminate electric shock and grid impact risks.

• Integrated with smoke, temperature, and flammable gas detectors, paired with an automatic perfluorohexanone fire suppression system for rapid fire containment.

• Cabinet adopts anti-corrosion spray coating + galvanized steel structure with explosion-proof pressure relief valves, adapting to harsh environments such as coastal salt spray and industrial dust.

• Equipped with emergency stop buttons and door-interlock power-off devices to ensure the safety of operation and maintenance personnel.

//Product Features

1. Multi-Scene Adaptability

   Integrates automation, IoT, and new energy technologies to flexibly adapt to a wide range of applications and environments.

2. Optimized Energy Economy

   Helps optimize the power supply structure and significantly reduces electricity costs for end users.

3. Improved Power Reliability & Quality

   Enhances overall reliability and quality of power supply, ensuring stable and clean electricity.

4. Intelligent Remote Monitoring & Control

   Enables 24/7 real-time monitoring of key system parameters (e.g., SOC and power consumption) from anywhere. Remote control functions allow timely system adjustment and convenient operation.

//Specifications

//Applicable Scenarios

• Industrial & Commercial Peak Shaving and Valley Filling

  Suitable for large factories, industrial parks, and commercial complexes. Charges during low-tariff periods and discharges during high-tariff periods to reduce electricity costs, avoid maximum demand penalties, and improve energy economics.

• PV / Wind Power Storage Integration

  Works with large-scale industrial and commercial PV or wind power stations to store surplus generation, increase self-consumption rate, reduce curtailment, and achieve green energy consumption and carbon neutrality goals.

• Grid-Side Energy Storage

  Used for grid peak regulation, frequency regulation, and demand response. Relieves grid load pressure, stabilizes grid voltage and frequency, improves power supply reliability, and delays grid upgrade investment.

• Large Backup Power Supply

  Provides emergency power for data centers, hospitals, production lines, transportation hubs, and other critical scenarios with millisecond-level switching, avoiding major losses from unplanned downtime and replacing traditional diesel generators.

• Coastal / Harsh Environment Energy Storage

  Designed with IP54 protection, anti-corrosion, salt spray resistance, and anti-condensation features for stable operation in high-humidity, salt-spray, and dusty environments such as coastal ports and chemical industrial parks.

• Microgrids & Virtual Power Plants

  Serves as the core energy storage unit of microgrids, enabling seamless grid-tied/off-grid switching to provide stable power for remote areas and industrial parks. It can also participate in virtual power plant dispatching for additional revenue.

//FAQ

Q1: Is professional installation required?

A: Yes. This system is a high-voltage, high-power liquid-cooled energy storage device involving professional operations such as high-voltage wiring, grid connection commissioning, liquid cooling system leak detection, and fire protection interlocking.

Installation by unqualified personnel or ordinary electricians is strictly prohibited. Equipment damage and safety incidents caused by non-professional installation are not covered by the warranty.

Q2: What if the system fails to start or close?

A: First check whether the emergency stop is reset, the cabinet door is closed, and the grid voltage is normal. Then troubleshoot insulation faults and BMS self-test errors. Re-power on after resolving issues.

Q3: Can it operate normally in high or low temperatures?

A: The system adopts liquid cooling + automatic low-temperature preheating, with an operating temperature range of -20°C ~ 55°C, ensuring stable performance in severe cold and hot environments.

• Below 0°C: Preheating starts automatically, and charging begins only after reaching a safe temperature to avoid cell damage.

• High temperature: Liquid cooling maintains cell temperature difference within 3°C to prevent overheating derating or thermal runaway.

• Beyond the temperature range, the system enters automatic protection mode without damage and resumes normal operation when conditions recover.

Q4: What is the operating temperature range?

A: Normal charge/discharge temperature: -20°C ~ 55°C; storage temperature: -30°C ~ 65°C.

Full-power operation is available from -10°C ~ 45°C. Beyond this range, the system automatically limits power or shuts down for protection without damaging the battery.

Q5: Why is the charge/discharge power insufficient?

A: Common causes include excessive cell temperature difference, over-high/over-low temperature, cell voltage approaching protection thresholds, EMS strategy limitations, or PCS current limiting. Power can be restored by stabilizing temperature and checking parameters.

Q6: What is included in routine maintenance?

A:

• Daily: Check operation status and alarm information.

• Weekly: Clean exterior, inspect filters and cooling systems.

• Monthly: Tighten terminals, check sealing and grounding.

• Quarterly: Inspect liquid cooling level and insulation performance.

• Annual: Comprehensive inspection and professional maintenance.