Electrical parameters identification of high-rate pulse-discharged lithium battery
In order to implement accurate battery modeling and its state estimation,it is necessary to carry out comparative research on the identification method and accuracy of the electrical parameters.Therefore,a constrained recursive least square(CRLS)algorithm was proposed based on the compre-hensive comparison of three parameter identification methods commonly used at present.The pro-posed method can realize the boundary constraint of output parameters so as to avoid the negative va-lue of the electrical parameters,and take the minimum predicted voltage mean square error as the tar-get to obtain the optimal solution.Four different methods were applied to the actual high-rate pulse-discharged sample data,and the parameter identification and comparative analysis,the results show that the electrical parameters identified by CRLS algorithm are more accurate than those by intelligent optimization algorithm,and the time cost is greatly reduced.
万方数据
维普
