摘要
钛酸锂(Li_(4)Ti_(5)O_(12))锂离子电池具有良好的低温性能、高安全性,已在民航机场特种车辆中得到应用。在机场宽温域环境下,荷电状态(SOC)的准确估算是保障机场特种车辆可靠性和安全性的关键。针对机场宽温域环境和放电倍率对钛酸锂锂离子电池SOC估算的影响,通过建立扩展Puekert方程,对安时积分法估算SOC进行容量修正,并对改进安时积分法的SOC估算与等效电路模型端电压进行工况验证与误差分析。扩展Puekert方程对电池容量估算的误差小于1%,改进安时积分估算误差小于0.06%,相比传统安时积分法提高0.04%,验证模型端电压均方根误差小于0.00025,鲁棒性良好。
Lithium titanate(Li_(4)Ti_(5)O_(12))Li-ion battery had good low temperature performance and high safety,which was applied in special vehicles of civil aviation airports.In the wide temperature range environment of the airport,accurate estimation of state of charge(SOC)was the key to ensure the reliability and safety of special vehicles at the airport.Aiming at the influence of the airport wide temperature environment and discharge rate on the estimation of SOC of lithium titanate Li-ion battery,the extended Puekert equation was established to modify the capacity of the amper-hour integral method to estimate SOC,the working condition verification and error analysis of the end voltage of the improved ampere integration method and the equivalent circuit model were performed.The error of the extended Puekert equation in the estimation of battery capacity was less than 1%,the estimation error of the improved amperes integration was less than 0.06%,which was 0.04%higher than that of the traditional ampere integration method,the root mean square error of the voltage at the end of the model was less than 0.00025,which had good robustness.
作者
黎桂树
谢松
平现科
LI Gui-shu;XIE Song;PING Xian-ke(Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province,Civil Aviation Flight University of China,Deyang,Sichuan 618307,China)
出处
《电池》
CAS
北大核心
2023年第1期24-28,共5页
Battery Bimonthly
基金
四川省科技计划项目(2022YFG0236,2021YFSY0001)
民机火灾科学与安全工程四川省重点实验室自主项目(MZ2022JB02)
中国民用航空飞行学院面上项目(J2021-098)
中国民用航空飞行学院研究生科研创新项目(XSY2022-02)。
