相变材料与液冷耦合的电池组热管理研究

Thermal management of battery pack based on phase change material and liquid cooling coupling

为了改善电池组放电时的环境温度,使电池组能够适应高放电倍率工况,采用了两种基于相变材料与液冷耦合的热管理方案控制电池组温度变化,并分别对两种散热方案进行了仿真与分析。将仿真结果对比后发现:基于相变材料与液冷耦合的热管理方式控温效果明显,能够使电池组适应额定最大放电倍率工况,且电池组结构组成形式和工作方式不同,其热管理效果不同。

In order to improve the ambient temperature during discharge of the battery pack and enable the battery pack to adapt to high discharge rate conditions, two thermal management schemes based on phase-change materials and liquid-cooled coupling were used to control the temperature change of the battery pack, and two heat dissipation schemes were respectively adopted. Simulation and analysis were carried out. Comparing the simulation results, it is found that the thermal management method based on phase-change material and liquid-cooled coupling has obvious temperature control effect, which can adapt the battery pack to the rated maximum discharge rate. However, the battery pack has different structural forms and working modes, and its thermal management effect is different.