李晓鹏,袁学庆,李博,李亚滨.考虑温度影响的锂电池等效电路建模及研究[J].电测与仪表,2019,56(3):35-41. lixiaopeng,yuanxueqing,libo,liyabin.Modeling and research of lithium ion battery equivalent circuit based on temperature[J].Electrical Measurement & Instrumentation,2019,56(3):35-41.
考虑温度影响的锂电池等效电路建模及研究
Modeling and research of lithium ion battery equivalent circuit based on temperature
Abstract：Traditional lithium battery equivalent circuit model ignores the impact of temperature and hysteresis voltage on itself, will lead to model parameter mismatch and accuracy decline, this paper discusses the temperature and hysteresis voltage on the lithium battery equivalent circuit model. The temperature-based equivalent circuit model of lithium ion battery was designed, the Urban Dynamometer Driving Schedule (UDDS) test was conducted at different temperatures. The subspace identification method was adopted to validate the internal parameters of the model to solve the model parameters. On this basis, the simulation output and output error of the traditional equivalent circuit model and the improved model at different temperatures were analyzed. The results show that the parameters of the equivalent circuit model of lithium battery are greatly influenced by the temperature. Under the condition of wide temperature variation, compared with the traditional model, the reliability of this model is higher, and the output matches well with the actual experimental data. The validity of this model is verified, which provides an effective model reference for practical application.
