The improved single particle model(SP +model)can be used to predict the basic parameters of the battery,and the charging safety boundary can be obtained by limiting the anode potential.The method is effective for the application of fast charging strategy.SP + model is built on the basis of the ternary lithium ion,there are differences in many characteristics against the real battery.This results in some differences in prediction accuracy of negative potential evaluation methods.The basic reflection model of battery is studied,and the correction factors are introduced into the expression,which is referred to the SOC,the cathode and anode potentials,and the lithium insertion concentration.The correction factors are calculated by carrying out the charging and discharging test.The equilibrium potential of battery and the cathode and anode potentials can be counted on in the case of 25℃ and specific SOC.The effectiveness of this method is verified through comparative experiments,which can provide reference for the prediction values of the cathode and anode open circuit potentials.
关键词
三元锂离子动力电池/改进单粒子模型(SP+模型)/电池基本反应模型
Key words
Ternary lithium ion power battery/Improved single particle model(SP +model)/Basic reflection model of battery
维普
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