New liquid-cooled energy storage system mitigates battery inconsistency with advanced cooling technology but cannot eliminate it. As a result, the energy storage system is equipped with some control systems including a battery management system (BMS) and power conversion system (PCS) to ensure battery balancing.
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.
Lithium-ion batteries are an essential component of the energy storage system; however,due to electrochemical instability, the consistency of the battery is relative while inconsistency is absolute.
Luo et al. achieved the ideal operating temperature of lithium-ion batteries by integrating thermoelectric cooling with water and air cooling systems. A hydraulic-thermal-electric multiphysics model was developed to evaluate the system's thermal performance.
Overview of a variety of liquid-cooled TEC-Based techniques and their integration into battery thermal management. Compared to using solely liquid cooling, the suggested approach achieved around 20 °C lower in the 40 V test. Battery cell temperatures remained below 40 °C due to liquid cooling circulation.