新能源汽车电池组液冷板换热分析与结构优化
Thermal analysis and structure optimization for the new energy vehicle battery cooling plate
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摘要: 采用三维、定常、不可压流体流动的控制方程，建立新能源汽车电池组液冷板换热数学模型；运用该模型，选择乙二醇水溶液为冷却介质，初始温度为15 ℃，进口质量流量为0.179 kg/s的边界条件进行换热分析，表明换热效果良好，但存在换热效率较低、液冷板质量较大等问题；将原有方案内部格栅结构改为板翅结构，采用正交试验对内部结构进行分析与优化，使液冷板减重13.9%，传热面积增大，换热功率提高了11.36%，达到了优化设计之目的.Abstract: By using the 3D control equations of incompressible fluid flow,a mathematical model of a new energy automotive battery cooling plate heat transfer was established. Using this model, selection of glycol water solution as cooling medium,at initial temperature of 15 ℃,with the boundary condition of the quality of imported flow heat of 0.179 kg/s transfer analysis was made.The heat transfer effect is good, but there were problems of low heat transfer efficiency and large cooling plate quality.The original scheme of internal grid structure was changed to plate fin structure and internal structure was analyzed and optimized by orthogonal test. The cooling plate weight was reduced by 13.9% after optimization.Because the heat transfer area increases, heat power increased by 11.36% to achieve the purpose of optimization design.
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Key words:
- new energy vehicle /
- cooling plate /
- heat transfer efficiency
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