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中文摘要：
针对电动汽车的动力电池的发热与温升问题,对实验用锂离子电池进行市区循环工况的测试,得到其表面温度数据和母线电流数据;对电池材料特性参数进行分析计算及电池PACK结构尺寸参数进行测量;建立动力电池的发热散热模型后对模型进行仿真计算。经过仿真,得到仿真模型的温度变化及分布;仿真数据与实验数据进行对比一致,表明动力电池的发热散热分析模型有效;在此基础山探讨运用相变材料作为散热介质的电池热管理方法,设计基于相变材料散热介质的动力电池组散热结构,利用建立的发热散热模型分析相变材料散热结构的散热效果,结果表明改进后的动力电池组相变材料散热结构的散热效果显著。
英文摘要：
For the overheating problem of electric vehicle power battery, the battery was tested in the urban diving cycles to obtain the surface temperature data and the bus current data; battery materials and other dimension parameters were measured to establish battery＇s heat generation and conduction model. After the simulation, the temperature changes and distributions of lithium-ion battery was gotten. Through the comparison between the simulation data and the experimental data, we knew that they are basically the same. Exploring ways to use phase change material as the heat medium of battery thermal management. By designing the filling structure of the phase change material, we simulated the cooling effect of the changed model. The result showed that the changed model＇s cooling effect is more significant.
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