液冷板结构对电池模组液冷性能的影响研究

Influence study of liquid cooling plate structure on liquid cooling performance of lithium battery module

针对不同结构的液冷板,采用标准的k-e湍流模型,运用有限元分析软件FLUENT对电池模组液冷板进行建模仿真。研究结果表明,双进出水口结构液冷板对冷却液的散热性能明显好于单进出水口,但对电池模组的液冷效果不理想。内置式液冷板结构液冷效果好于电池模组上置式液冷板结构,且散热均匀高效,从而确定了一种散热高效均匀的液冷板结构。为了验证建模仿真的可靠性,在设计生产出实物后,对内置式双进出水口液冷板实物模型进行了0.7 C放电液冷实验。实验结果表明,采用此结构的电池模组在放电时,温升的实验结果与仿真结果基本一致,在一定程度上验证了模拟仿真的可靠性。

According to the different structure of the liquid cooling plate,the standard k-e turbulence model was used,and the finite element analysis software FLUENT was used to model the liquid cooling plate of the battery module.The results show that the cooling performance of the double inlet and outlet structure is better than that of the single inlet and outlet,but the cooling effect of the battery module is not ideal.The liquid cooling effect of the built-in liquid cooling plate structure is better than that of the upper liquid cooling plate structure of the battery module,and the heat dissipation and cloud accumulation are efficient.Then a liquid cooling plate structure with high efficiency and uniform heat dissipation was determined.In order to verify the reliability of modeling and simulation,a 0.7 C rate discharge liquid cooling experiment was carried out on the built-in double inlet and outlet liquid cooling plate model after the design and production.The experimental results show that the experimental results of temperature rise of the battery module with this structure are basically consistent with the simulation results,which proves the reliability of the simulation to a certain extent.