首页> 外文期刊>Energy Conversion & Management >The characterization of dynamic behavior of Li-ion battery packs for enhanced design and states identification
【24h】

The characterization of dynamic behavior of Li-ion battery packs for enhanced design and states identification

机译:锂离子电池组动态行为的表征,用于增强设计和状态识别

获取原文
获取原文并翻译 | 示例
           

摘要

The dynamic responses of a Li-ion battery pack deployed on hybrid electric vehicles are studied with a high fidelity finite element model and a parametric reduced-order model. The effects of microstructure transformation in the electrode materials caused by lithium-ion intercaladon/deintercalation on the evolution of dynamic responses are investigated including the effects of the state of charge, aging, and cell-to-cell variations. The dynamic responses obtained from a finite element analysis show two interesting phenomena. First, the high modal density is controllable with the design modification of a pack component. Second, dynamic responses, especially the evolution of the natural frequencies of the fixed-boundary modes, of a Li-ion battery pack provide useful information to estimate the dynamic states or health states of the battery. A probabilistic analysis is also carried out considering stochastic operational conditions of hybrid electric vehicles with a parametric reduced order model. The probabilistic analysis not only suggests appropriate modes and locations for monitoring its dynamic responses, but also determines the maximum response level of every cell in the battery pack. The proposed modeling approach can improve the safety and reliability of the structural design of battery cells and packs. Furthermore, it can be useful for the identification of the battery states during the operation.
机译:利用高保真有限元模型和参数化降阶模型研究了混合动力汽车上锂离子电池组的动力响应。研究了由锂离子夹层/去夹层引起的电极材料中微观结构转变对动态响应演变的影响,包括电荷状态,老化和电池间变化的影响。从有限元分析获得的动态响应显示了两个有趣的现象。首先,通过包装组件的设计修改可以控制高模态密度。第二,锂离子电池组的动态响应,尤其是固定边界模式固有频率的变化,为估算电池的动态状态或健康状态提供了有用的信息。考虑参数化降阶模型的混合动力汽车的随机运行条件,还进行了概率分析。概率分析不仅建议用于监视其动态响应的适当模式和位置​​,还可以确定电池组中每个电池的最大响应级别。所提出的建模方法可以提高电池单元和电池组结构设计的安全性和可靠性。此外,对于在操作期间识别电池状态可能是有用的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号