Why the 2MWh Energy Storage Container Use an Air-Cooling System

In recent years, with the popularization of new energy, large-scale energy storage has gradually come into the view of factory owners, and 1MW / 2MW energy storage has also become very common equipment. For large-scale energy storage equipment, a large amount of heat is generated during charging and discharging. We have all heard that energy storage equipped with liquid cooling systems has a higher heat dissipation efficiency. Then, for a 2MWh energy storage container system, why is an air-cooling system chosen for heat dissipation?

I. Is heat Dissipation Important?

First of all, we need to clarify why large-scale energy storage systems attach so much importance to heat dissipation? What problems can arise if too much heat accumulates?

Battery performance decline: Excessively high temperatures can reduce battery capacity and lifespan.

Increased safety risks: Excessively high temperatures may cause thermal runaway and even fire.

System efficiency reduction: The efficiency of the battery and inverter decreases when operating in high-temperature environments.

Therefore, an effective temperature control system is essential for energy storage systems, which is a crucial factor in enhancing the efficiency and lifespan of large-scale energy storage systems.

Ii. Is the air-cooling system good?

An air-cooling system is an energy storage system that achieves a cooling effect by removing the heat generated by battery modules and electrical equipment through fans. Its features are:

• Simple structure: Only a fan, air passage and air outlet are needed, without complex liquid pipelines.
• Low cost: Cheaper than liquid cooling systems, with lower installation and maintenance costs.
• Strong applicability: In areas with moderate temperatures and good ventilation, the air-cooling system can meet most heat dissipation requirements.
• High reliability: No risk of liquid leakage and few failure points.

III. Why is air cooling chosen for the 2MWh container system

The system scale is moderate: Although 2MWh is large, if the charging and discharging power is not particularly high, the generated heat can be effectively dissipated through air cooling.

Cost considerations: The liquid cooling system is expensive and the equipment maintenance is relatively complex. For project equipment that pursues cost performance, air cooling is more suitable.

Convenient maintenance: The air-cooling system is easy to maintain, and the fan replacement is convenient. It does not involve liquid circulation or pump failure.

Application scenario matching: For some outdoor container energy storage projects (such as communication base stations, microgrids, and photovoltaic supporting energy storage), the ambient temperature is not too extreme, and air cooling is completely sufficient.

Ⅳ. Limitations of the air-cooling system

Limited heat dissipation capacity: In high-temperature areas or high-power-density systems, air cooling may be insufficient.

Noise: Large fans will make some noise when running.

Environmental dependence: When the air temperature is too high, the efficiency of air cooling decreases.

For energy storage systems with higher power density, frequent charging and discharging, or extreme ambient temperatures, liquid cooling systems are generally chosen because liquid cooling has stronger thermal management capabilities.

Therefore, the 2MWh energy storage container selects an air-cooling system because of its controllable heat dissipation requirements, low cost, simple structure and convenient maintenance, making it suitable for medium-power energy storage applications with moderate ambient temperatures. Of course, in areas with relatively suitable ambient temperatures, air-cooling systems offer a good cost-performance ratio.

In areas with excessively high ambient temperatures, Highjoule can also configure an appropriate liquid cooling system for you or set up distributed energy storage cabinets in a decentralized manner. According to your specific circumstances, we can customize the most efficient and cost-effective solution for free.