基于最大容量利用率的可重新配置拓层次均等方法的研究
1School of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan, China.
PloS one
|December 14, 2023
概括
电池不平衡限制了电动汽车的续航里程. 一个新的可重新配置的拓和层次平衡策略将电池组容量利用率提高15.93%,改善电动汽车的行驶距离.
科学领域:
- 电气工程 电气工程
- 储能系统 储能系统 储能系统
- 电力电子 电力电子 电力电子
背景情况:
- 电池不平衡是限制电动汽车 (EV) 可用容量和行驶距离的关键问题.
- 现有的电池平衡方法通常需要复杂的直流-直流转换器,或者是低效的.
研究的目的:
- 为电动汽车电池组提出一种新的等级平衡策略,结合电动汽车电池组的可重新配置拓.
- 为了最大限度地利用电池组容量并提高电动汽车的行驶距离,无需DC-DC转换器.
主要方法:
- 使用四个开关可重新配置的拓,允许灵活的细胞连接,绕过和并行.
- 实施层次平衡策略,采用模块间K-means集群和模块内部分割和再组合.
- 在一个8电池模块上验证方法.
主要成果:
- 实现了完全的电池平衡和最大的电池组容量利用.
- 增加了15.93%的电池组容量利用率.
- 在0.9%的电池组终端电压保持低的最大波动率.
结论:
- 提出的具有可重新配置拓的层次平衡策略有效地解决了电动汽车组件中的电池不平衡问题.
- 这种方法通过最大限度地利用电池容量并确保稳定的电压性能来提高电动汽车的行驶距离.
- 该系统在不需要DC-DC转换器的情况下有效运行.
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