Liquid-cooled battery energy storage systems provide better protection against thermal runaway than air-cooled systems. “If you have a thermal runaway of a cell, you’ve got this massive heat sink for the energy be sucked away into. The liquid is an extra layer of protection,” Bradshaw says.
The implications of technology choice are particularly stark when comparing traditional air-cooled energy storage systems and liquid-cooled alternatives, such as the PowerTitan series of products made by Sungrow Power Supply Company. Among the most immediately obvious differences between the two storage technologies is container size.
Improved Battery Life: By using a liquid-cooled system, the batteries can be kept at a more stable and cooler temperature, which can extend their lifespan and reduce the risk of failure. Higher Efficiency: When the batteries are kept at a cooler temperature, they can operate more efficiently, resulting in greater energy output and lower costs.
It was discovered that the TEC system has a substantial impact on the pack's cooling performance and keeps the battery temperature lower than 30 °C. Increasing the flow rates on both the cold and hot sides of the battery will potentially lower the average battery cell temperature by 3 °C–5 °C.
Battery cell temperatures remained below 40 °C due to liquid cooling circulation. Increased cold and hot side flow rate lowered battery cell temperature by 3–5 °C, resulting in a uniform temperature below 3 °C in the cooling pack. 10. Heat pipe cooled thermoelectric BTMS
If the temperature of the batteries exceeds a certain limit, it can result in reduced battery life and even the risk of fire. This is where liquid-cooled technology comes in. By using a liquid-cooling system to manage the heat generated by the batteries, BESS containers can operate more efficiently and safely.