电池在应用过程中的热效应问题不仅直接影响着电池的性能与寿命,还存在一定的安全隐患.电池自身的物性参数直接影响着电池的产热效应.通过在不同温度下对圆柱形锰酸锂电池的内阻进行实验测量,针对圆柱形锂离子动力电池的内阻所引起的温升特性建立起相关传热模型和数值计算以及实验验证,重点分析圆柱形锂离子电池的物性参数之一——内阻对电池本身温升效应的影响.结果表明,圆柱形锂离子电池的内阻对电池温升有较大影响,电池的温升分析计算中取定值内阻的计算结果误差较大.%Thermal effect occurred in the application of battery not only effects the performance and life of battery, but also brings a hidden danger to the battery. The physical parameters of battery directly influence the thermal effect. The internal resistance of cylindrical LiMn2O4 battery was measured under different temperatures, the heat transfer model was built based on the temperature rising characteristics caused by internal resistance of cylindrical Li-ion battery, and the physical parameters were analyzed. The results show that the internal resistance has a significant impact on the battery temperature rising under the decided conditions. The battery temperature rising has a larger calculation error at a constant resistance.
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