Advantages of liquid cooling energy storage

1. Low energy consumption

The short heat dissipation path, high heat exchange efficiency, and high refrigeration energy efficiency of liquid cooling technology contribute to the low energy consumption advantage of liquid cooling technology.

Short heat dissipation path: The low-temperature liquid is directly supplied to the cell equipment from the CDU (cold distribution unit) to achieve precise heat dissipation, and the entire energy storage system will greatly reduce self-consumption.

High heat exchange efficiency: The liquid cooling system realizes liquid-to-liquid heat exchange through a heat exchanger, which can transfer heat efficiently and centrally, resulting in faster heat exchange and better heat exchange effect.

High refrigeration energy efficiency: Liquid cooling technology can realize high-temperature liquid supply of 40~55℃, and is equipped with a high-efficiency variable frequency compressor. It consumes less power under the same cooling capacity, which can further reduce electricity costs and save energy.

In addition to reducing the energy consumption of the refrigeration system itself, the use of liquid cooling technology will help further reduce the battery core temperature. The lower battery core temperature will bring higher reliability and lower energy consumption. The energy consumption of the entire energy storage system is expected to be Reduced by approximately 5%.

2. High heat dissipation

Commonly used media in liquid cooling systems include deionized water, alcohol-based solutions, fluorocarbon working fluids, mineral oil or silicone oil. The heat carrying capacity, thermal conductivity and enhanced convection heat transfer coefficient of these liquids are much greater than that of air; therefore, , for battery cells, liquid cooling has higher heat dissipation capacity than air cooling.

At the same time, liquid cooling directly takes away most of the heat of the equipment through the circulating medium, greatly reducing the overall air supply demand for single boards and entire cabinets; and in energy storage power stations with high battery energy density and large changes in ambient temperature, the coolant and battery Tight integration enables relatively balanced temperature control between batteries. At the same time, the highly integrated approach of the liquid cooling system and the battery pack can improve the temperature control efficiency of the cooling system.