Investigation on Battery Thermal Management Systems With Phase Change Materials and Liquid-cooling

To address the problem of battery thermal management failure caused by the limited latent heat of phase change materials (PCMs), this paper proposes a novel composite battery thermal management system. The system utilizes serpentine liquid cooling tubes with fins to recover the latent heat of PCMs. Numerical simulations were employed to study the effects of battery spacing, liquid cooling structural parameters, and coolant flow rates on the thermal management performance of the hybrid system, leading to the determination of optimal parameter values. The results indicate that all three liquid cooling operation modes can consistently maintain the temperature of the battery module below 50◦C. Furthermore, by optimizing the operation time of the liquid cooling system, the latent heat of PCMs can be promptly restored, thereby maximizing the utilization of the latent heat of PCMs. © 2024 Science Press. All rights reserved.