Optimal Maintenance of Electric Vehicle Battery System Through Overnight Home Charging

IF 1 Q4 AUTOMATION & CONTROL SYSTEMS
Sidharth Jangra, C. Chung, Qingzhi Lai, Xinfan Lin
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引用次数: 2

Abstract

Plug-in electric vehicle (PEV) is emerging as one of the most viable choices for the transportation sector to reduce fossil fuel consumption and CO2 emission. As the most critical component of PEV, battery systems require intensive management and diagnostics to ensure safety, efficiency, and endurance. Most existing studies focus on battery management when PEVs are under operation while none has explored battery maintenance during overnight parking, which accounts for a majority of the time (> 12 hours per day). Battery states during this period significantly affect the lifetime due to the side reactions that occur even when the battery is not in use. The process occurs at an accelerated rate when the battery energy level or temperature is too high or too low. In this paper, we propose to utilize an existing infrastructure available to PEV owners, the home charging unit, for intelligent battery maintenance during overnight parking. We will design an optimal charging profile that would charge the battery to a specific level while maintaining its states at optimal conditions to minimize degradation due to side reactions over the whole overnight period. Optimal charging profiles are created for different ambient temperatures and at different stages of battery life to investigate various scenarios. To demonstrate the effectiveness of the designed optimal charging profiles, the total capacity loss overnight is compared with those of three standard charging profiles.
夜间家庭充电对电动汽车电池系统的优化维护
插电式电动汽车(PEV)正在成为交通运输行业减少化石燃料消耗和二氧化碳排放的最可行的选择之一。作为电动汽车最关键的组成部分,电池系统需要密集的管理和诊断,以确保安全性、效率和耐久性。现有的大多数研究都集中在电动汽车运行时的电池管理上,而没有研究过夜间停车时的电池维护,而夜间停车占了大部分时间(每天大于12小时)。在此期间,由于副反应的发生,即使电池不使用,电池状态也会显著影响寿命。当电池能量水平或温度过高或过低时,该过程会加速发生。在本文中,我们建议利用PEV车主现有的基础设施,即家庭充电单元,在夜间停车期间进行智能电池维护。我们将设计一个最佳充电配置文件,将电池充电到一个特定的水平,同时保持其状态在最佳条件下,以尽量减少由于整个夜间的副反应而导致的退化。在不同的环境温度和电池寿命的不同阶段创建了最佳充电配置文件,以研究各种情况。为了验证所设计的最优充电方案的有效性,将夜间总容量损失与三种标准充电方案进行了比较。
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来源期刊
Mechatronic Systems and Control
Mechatronic Systems and Control AUTOMATION & CONTROL SYSTEMS-
CiteScore
1.40
自引率
66.70%
发文量
27
期刊介绍: This international journal publishes both theoretical and application-oriented papers on various aspects of mechatronic systems, modelling, design, conventional and intelligent control, and intelligent systems. Application areas of mechatronics may include robotics, transportation, energy systems, manufacturing, sensors, actuators, and automation. Techniques of artificial intelligence may include soft computing (fuzzy logic, neural networks, genetic algorithms/evolutionary computing, probabilistic methods, etc.). Techniques may cover frequency and time domains, linear and nonlinear systems, and deterministic and stochastic processes. Hybrid techniques of mechatronics that combine conventional and intelligent methods are also included. First published in 1972, this journal originated with an emphasis on conventional control systems and computer-based applications. Subsequently, with rapid advances in the field and in view of the widespread interest and application of soft computing in control systems, this latter aspect was integrated into the journal. Now the area of mechatronics is included as the main focus. A unique feature of the journal is its pioneering role in bridging the gap between conventional systems and intelligent systems, with an equal emphasis on theory and practical applications, including system modelling, design and instrumentation. It appears four times per year.
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