广西科技大学学报2024，Vol.35Issue(2)：56-64,9.DOI:10.16375/j.cnki.cn45-1395/t.2024.02.008
纯电动汽车低压电源管理优化策略研究
Study on optimal strategy of low-voltage power supply management for pure electric vehicles
摘要
Abstract
With the continuous development of automotive technology,there are more and more types of electrical equipment for automobiles,and the proportion of electric energy consumed by electrical appliances in the vehicle energy continues to rise,posing higher requirements for low-voltage power supply management.In order to meet the increasing demand of users for electricity,reduce the energy consumption of the vehicle and improve the charging efficiency of the battery,based on the classification of pure electric vehicle loads,this paper uses genetic algorithm to optimize the state of charge(SOC)of low-voltage batteries for power safety classification and proposes a four-stage constant current low-voltage lithium battery charging management strategy based on SOC.Then we use AVL-Cruise and MATLAB-Simulink software to jointly simulate and build a vehicle model and use different operating conditions for simulation verification and comparative analysis.The results show that the low-voltage lithium battery power supply management strategy can meet the electric safety requirements of pure electric vehicles,and improve the vehicle economy to a certain extent.After optimization,the charging efficiency of the lithium battery has been improved to a certain extent,and the charging time has also been reduced.关键词
纯电动汽车/低压电源管理系统/锂电池/遗传算法Key words
pure electric vehicle/low-voltage power supply management system/lithium battery/genetic algorithm分类
信息技术与安全科学引用本文复制引用
彭忛,罗文广..纯电动汽车低压电源管理优化策略研究[J].广西科技大学学报,2024,35(2):56-64,9.基金项目
国家自然科学基金项目(62263001) （62263001）
广西自然科学基金重点项目(2020GXNSFDA238011)资助 （2020GXNSFDA238011）
