Greenwatt 100KW PCS+261Kwh Liquid Cooling Energy Storage System

Greenwatt FH series industrial and commercial storage outdoor integrated cabinet is suitable for various industrial and commercial application scenarios such as industrial parks and commercial complexes.

The integrated cabinet adopts modular design,which can be flexibly expanded,and is convenient for installation and operation,and maintenance.Explosion-proof design of the whole machine,aerosol fire protection system.AC sidesecondary lighting protection(fault alarm),leakage current detection protection and other safety functions to guard the safety of the power station.

Liquid-cooled temperature control system supports low temperature heating.The IP55 rating supports outdoor installation,integrates EMS function,and can participate in electricity market transactions(VVP) to meet the management of electricity charges for the demand of the park and help the development of industrial and commercial energy storage.

1.Why Liquid Cooling is a Key Feature

For a large, high-power battery like a 261 kWh system, managing temperature is critical for performance, safety, and lifespan.

Advantages over Air Cooling:

Superior Heat Transfer: Liquid is much more efficient at absorbing and moving heat than air. This allows the system to handle high charge and discharge rates (high power in kW) without overheating.

Temperature Uniformity: It ensures all battery cells are kept at a similar, optimal temperature (e.g., 25-35°C). Hot spots are minimized, which is a major factor in preventing premature degradation.

Compactness & Efficiency: Liquid cooling components can be more compact than large air ducts and fans for the same cooling power. The system itself can also run its pumps more quietly and efficiently.

Extended Lifespan: By maintaining a stable, optimal temperature, the chemical degradation of the lithium-ion cells is significantly slowed down, preserving the system's capacity for more charge/discharge cycles.

Safety: Effective thermal management is the first line of defense against thermal runaway, a dangerous chain reaction where a cell overheats and can cause a fire.

2. Typical Applications for a 261 kWh System

This size system is in the commercial & industrial (C&I) and utility-scale range.

Commercial & Industrial (C&I):

Peak Shaving: A factory or large store uses power from the battery during periods of high, expensive electricity demand (e.g., hot afternoons), reducing their peak demand charges from the utility, which can be a significant portion of their bill.

Backup Power: Provides critical backup for operations during a grid outage.

Time-of-Use (TOU) Optimization: Charges the battery when electricity rates are low (e.g., at night) and uses that energy during high-rate periods.

Utility & Renewable Integration:

Solar Smoothing & Firming: A 261 kWh system, often paired with a larger solar farm, stores excess solar energy during the day and releases it when the sun isn't shining, making the solar power output more reliable and dispatchable.

Frequency Regulation: Helps the grid maintain a stable 50/60 Hz frequency by absorbing or injecting power in real-time. This requires very fast response times, which liquid cooling facilitates.

Microgrids: Acts as a key stability and storage component for a localized grid that can operate independently from the main grid.

Electric Vehicle (EV) Charging Stations:

DC Fast Charging Support: A 261 kWh battery can be paired with a slower grid connection to provide bursts of high power for multiple EV fast chargers simultaneously. This avoids the need for a prohibitively expensive grid transformer upgrade.

3. Key Components of Such a System

A complete system is more than just battery racks:

Battery Racks: The actual lithium-ion (likely LFP - Lithium Iron Phosphate) cells arranged in modules and packs to achieve 261 kWh.

Liquid Cooling Loop: Pumps, coolant, cold plates, and a heat exchanger (like a radiator).

Battery Management System (BMS): The "brain" that monitors voltage, temperature, and state of charge for each cell, ensuring safe operation.

Power Conversion System (PCS): The bi-directional inverter that converts DC electricity from the batteries to AC electricity for the building/grid, and vice versa. The power rating (e.g., 100 kW, 150 kW) determines how fast you can use or charge the 261 kWh.

Energy Management System (EMS): The top-level control system that decides when to charge and discharge based on algorithms, weather forecasts, and electricity price signals.