摘要
单点控制策略燃油经济性好,但电池经常大功率充放电,寿命衰减快;多点控制策略电池衰减慢,但燃油经济性较差。针对上述情况,提出一种基于电池荷电状态(state of charge,SOC)的分区域多点控制策略,根据APU需求功率和SOC范围调整APU工作区域及工作点。仿真结果显示:NEDC工况下,与APU分区域多点控制策略相比,单点控制策略的综合百公里油耗提高5.11%,经济性提高5.45%,但电池容量衰减量增加4.20%;多点控制策略的百公里油耗降低11.04%,经济性降低17.41%,但电池容量衰减量减小12.33%。分区域多点控制策略在整车经济性与动力电池衰减的性能方面均表现良好。在WLTC工况下,3种控制策略的优缺点与NEDC工况下仿真结果一致。硬件在环仿真结果表明,分区域多点控制策略的性能与模型在环仿真结果基本一致。
The single-point control strategy achieves high fuel economy,but the batteries are often charged and discharged with high power,which results in fast capacity degradation.The multi-point control strategy slows down the battery decay,but achieves low fuel economy.To address the problem,this paper proposes a sub-region multi-point control strategy based on the state of charge(SOC)of the batteries,adjusting the working area and working points of the APU according to the demanded power of the APU and the SOC range.The simulation results show,under the eight NEDC cycles,compared with the APU sub-area multi-point control strategy,the single-point control strategy increases the fuel consumption for 100 km by 5.11%and the economy by 5.45%,but the battery capacity degradation increases by 4.20%.In contrast,the multi-point control strategy reduces the fuel consumption for 100 km by 11.04%and the economy by 17.41%,but the battery capacity degradation is down by 12.33%.The sub-area multi-point control strategy performs well in both economy and power battery degradation.Simulation results under WLTC conditions show the strengths and weaknesses of the three control strategies are consistent with the simulation results under NEDC conditions.The hardware-in-the-loop results show the performance of the subarea multipoint control strategy is largely consistent with the model-in-the-loop simulation results.
作者
罗勇
石维权
翁勇永
贺建蓥
刘媛媛
LUO Yong;SHI Weiquan;WENG Yongyong;HE Jianying;LIU Yuanyuan(Key Laboratory of Advanced Manufacturing Technology for Automobile Parts,Chongqing University of Technology,Chongqing 400054,China)
出处
《重庆理工大学学报(自然科学)》
北大核心
2026年第3期56-65,共10页
Journal of Chongqing University of Technology:Natural Science
基金
国家自然科学基金项目(51305475)
重庆市自然科学基金创新发展联合基金重点项目(CSTB2023NSCQ-LZX0160)
重庆市技术创新与应用发展专项重大项目(CSTB2022TIAD-STX0005)。
关键词
分区域多点控制策略
经济性
电池容量衰减
sub-area multi-point control strategy
economics
battery capacity attenuation
