电池管理系统测试用锂电池融合模型研究

Fusion model research of lithium battery for testing of battery management system

锂电池模型的精度直接影响了对电池状态的估计精度。针对电池管理系统对测试系统的需求,考虑了温度对锂电池组合模型参数的影响,通过对不同温度下锂电池组合模型的自适应融合,实现变温条件下动力锂电池的建模。通过建立高精度的锂电池模型,实现测试系统对不同温度环境的普遍适用性。还对自适应融合后的电池模型在变温度恒定电流和变温度动态电流条件下进行仿真实验,结果表明该自适应模型融合方法可以有效提高模型精度,可以适用于电池管理系统测试系统中。

The estimation precision of battery state was directly affected by the precision of lithium battery model. According to the requirement of test system for Battery Management System （BMS）, the power lithium battery model under varied temperature was built. The influence of the temperature to the combination model of lithium battery was fully considered, and the lithium battery combination model was self-adaptively fused under different temperature. The general applicability of the test system for different temperature was accompanied, through the building of high precision lithium battery model. The fusion model was experimented simulation at constant current and variable current under variable temperature. The self-adaptive fusion method could approve effectively the model precision, and could be used in the testing system of BMS.