Examining Model-Based Fast-Charging and Preconditioning on a Vehicle Level

被引:0
作者
Gamra, Kareem Abo [1 ]
Zaehringer, Maximilian [1 ]
Ladner, Aaron [1 ]
Allgaeuer, Christian [1 ]
Lienkamp, Markus [1 ]
机构
[1] Tech Univ Munich TUM, Inst Automot Technol, Sch Engn & Design, Dept Mobil Syst Engn, D-85748 Garching, Germany
来源
WORLD ELECTRIC VEHICLE JOURNAL | 2024年 / 15卷 / 08期
关键词
lithium-ion battery; fast-charging; battery management; thermal management; electric vehicle; BEHAVIOR;
D O I
10.3390/wevj15080377
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
To establish battery electric vehicles as an attractive alternative to internal combustion vehicles, charging times of 15 min or less are increasingly demanded. This is especially challenging for lower battery temperatures, as this exacerbates the risk of accelerated battery degradation due to lithium plating. Therefore, active battery heating is utilized in state-of-the-art electric vehicles. To evaluate the impact of such heating strategies at vehicle level, we deployed an electrochemical battery model coupled with a longitudinal vehicle dynamics model. Using anode potential control to prevent lithium plating, we assess the time-saving potential versus the energy cost of different preconditioning and fast-charging strategies. The results reveal substantial energy saving and charge speed increase potential through optimal charge-stop planning, preconditioning timing, cost-adjusted thermal management thresholds, and considering driving behavior. This emphasizes the need for advanced operation strategies, taking into account both battery-level electrical and thermal restrictions, as well as vehicle integration and route planning.
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页数:14
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