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Improving battery safety for electric vehicles through the optimization of battery design parameters

机译：通过优化电池设计参数来提高电动汽车的电池安全性

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摘要

Battery safety is crucial to electric vehicles (EVs). Battery degradation is closely related to battery safety. Degraded battery cells can cause potential safety issues. In order to improve battery safety, it is essential to reduce battery degradation. Battery degradation is mainly caused by side reactions, which can cause solid electrolyte interphase (SEI) layer growth. This paper aims to reduce degradation and improve battery safety by optimizing battery design parameters. The proposed framework develops a reduced-order electrochemical battery model to predict battery performance as well as SEI layer growth. Battery design parameters (i.e., electrode thickness, particle size, conductivity, and electrode porosity) are optimized to improve battery health and reduce battery capacity loss during cycling. The simulation results show that battery health has been improved from 46% to 68% and battery capacity loss has been reduced more than 22% during the first 100 cycles.
机译：电池安全性对于电动汽车（EV）至关重要。电池退化与电池安全性密切相关。退化的电池可能导致潜在的安全问题。为了提高电池安全性，必须减少电池退化。电池退化主要是由副反应引起的，副反应可能导致固体电解质相间（SEI）层生长。本文旨在通过优化电池设计参数来减少退化并提高电池安全性。拟议的框架开发了降阶电化学电池模型，以预测电池性能以及SEI层的增长。优化了电池设计参数（即电极厚度，粒径，电导率和电极孔隙率），以改善电池健康状况并减少循环期间的电池容量损失。仿真结果表明，在前100个循环中，电池的运行状况从46％改善到68％，电池容量损失减少了22％以上。

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  • 来源
    《Battery safety》|2015年|5-15|共11页
  • 会议地点 Phoenix AZ(US)
  • 作者

    Changhong Liu; Lin Liu;

  • 作者单位

    Department of Mechanical Engineering, University of Kansas, Lawrence, KS 66045;

    Department of Mechanical Engineering, University of Kansas, Lawrence, KS 66045;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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