一种基于电动汽车充电和放电状态的新型活性离子电池平衡方法
Shreasth1, Chia Ai Ooi2, Neha Khan1
1School of Electrical and Electronic Engineering, Universiti Sains Malaysia, Engineering campus, Nibong Tebal, Penang, 14300, Penang, Malaysia.
Scientific reports
|May 6, 2025
概括
本研究介绍了一种新的基于电力状态 (SoP) 的算法,用于离子 (Li-ion) 电池电池平衡. SoP方法通过在充电和放电期间最大限度地减少平衡工作来提高电池组的性能和可用容量.
科学领域:
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 离子 (Li-ion) 电池组需要细胞均等才能获得最佳的性能和容量.
- 电池失衡限制了整体功率输送和可用的容量,特别是在串行/并行配置中.
- 现有的基于电压和基于电荷状态 (SoC) 的平衡方法具有局限性.
研究的目的:
- 为离子电池组提出基于电源状态 (SoP) 的活性电池平衡算法.
- 在充电和放电过程中解决电池不平衡.
- 为了提高电池组的性能,可用的容量,并最大限度地减少平衡损失.
主要方法:
- 开发了一种使用充电电源状态 (CSoP) 和放电电源状态 (DSoP) 的活跃电池平衡算法.
- 从动态估计的病情 (SoC) 或健康状况 (SoH) 衍生出SoP.
- 通过 MATLAB / Simulink 模拟和实验设置与不平衡的离子电池验证了算法.
主要成果:
- 基于SoP的方法提高了可用的电池组容量16%,与不平衡的电池组相比.
- 该算法证明了有效的细胞平衡,最大限度地提高单个细胞的充电/放电.
- 模拟和实验结果证实了算法的稳定性,稳定性和精度.
结论:
- 拟议的基于SoP的电池平衡算法比传统的电压/SoC方法提供了更高的性能.
- 这种方法提高了离子电池组的可用容量和功率交付,而平衡干预最小.
- 该算法有效地管理电动汽车电池系统中的电池不平衡.
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