We Work
To Understand
Your Project Goals and Outputs
To Understand
Your Project Goals and Outputs
Battery Energy Storage System（BESS）
An energy storage system that uses batteries as energy storage media. Unlike traditional fossil fuels, battery energy storage systems can store renewable energy sources such as solar and wind energy, and release them when needed to balance energy supply and demand.
Technology and Business Trends
With the upgrading of new energy power stations and off grid energy storage towards larger capacity and higher system power density, liquid cooling solutions BESS have gradually become mainstream. The customer's focus on ROI and Payback Period has further accelerated the development trend of high charge & discharge rate BESS.
Larger Capacity , Density Power, High Charging and Discharging Rates imply a high risk of thermal runaway， so the demand for energy storage thermal management will also become higher.
Therefore, the heat exchange efficiency of energy storage thermal management also needs to be further improved.
Walmate Liquid Cooled
BESS Solution
BESS Solution
Characteristics of Liquid Cooling Technology
Liquid cooling technology uses liquid as a medium for heat exchange. Compared to air, liquid has a larger heat carrying capacity, lower flow resistance, and can provide faster heat dissipation speed and higher heat dissipation efficiency. Moreover, the liquid cooling system does not require the design of air ducts, reducing the use of mechanical components such as fans. It has a lower failure rate, low noise, is environmentally friendly, saves space, and is more suitable for large energy storage stations with a capacity of over 100MW in the future. It has been widely used in situations with high battery energy density and fast charging and discharging speeds.
Why Liquid Cooled BESS is becoming popular?
• The temperature of the battery pack is lower: at the same inlet temperature, maximum wind speed, and flow rate, liquid cooling can cause a greater decrease in temperature, and the maximum temperature of the battery pack will be 3-5 degrees Celsius lower than that of air cooling；
• Low operating energy consumption: To achieve the same average battery temperature, the required operating energy consumption for air cooling is about 3-4 times that for liquid cooling;
• Low risk of battery thermal runaway: The liquid cooling scheme can rely on a large flow of cooling medium to force the battery pack to dissipate heat and achieve heat redistribution between battery modules, quickly suppressing the continuous deterioration of thermal runaway and reducing the risk of runaway;
• Lower investment cost: Due to the fact that liquid cooling systems are easier to ensure that batteries operate at comfortable temperatures, compared to air cooling systems, they can extend battery life by more than 20%. Overall, the investment in liquid cooling is lower.
Working Principle of
Liquid Cooled BESS
Liquid Cooled BESS
Cooling load
The refrigerant releases the heatabsorbed by the battery cold platethrough the evaporator, and thenuses the power generated by theoperation of the water pump tore-enter the cold plate to absorbthe heat generated by theequipment.
Refrigeration
During the operation of the unit,the evaporator (plate heatexchanger) absorbs heat throughrefrigerant evaporation from therefrigerant circulation system, andthe condensation of therefrigerant releases heat into thesurrounding air environment. Thecondensed refrigerant returns tothe evaporator through theexpansion valve and circulatesthe process repeats back andforth.
Products and Services
COLD PLATES
HEATSINKS
VALUE-ADDED SERVICES
Application Cases and
Success Stories
Success Stories
