冲击载荷下圆柱形锂离子电池的动态响应预测

黄子轩 张新春 顾丽蓉 安利强 饶理想 张玮琦

黄子轩, 张新春, 顾丽蓉, 安利强, 饶理想, 张玮琦. 冲击载荷下圆柱形锂离子电池的动态响应预测[J]. 爆炸与冲击. doi: 10.11883/bzycj-2024-0188
引用本文: 黄子轩, 张新春, 顾丽蓉, 安利强, 饶理想, 张玮琦. 冲击载荷下圆柱形锂离子电池的动态响应预测[J]. 爆炸与冲击. doi: 10.11883/bzycj-2024-0188
HUANG Zixuan, ZHANG Xinchun, GU Lirong, AN Liqiang, RAO Lixiang, ZHANG Weiqi. Dynamic response prediction of cylindrical lithium-ion batteries under impact loading[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0188
Citation: HUANG Zixuan, ZHANG Xinchun, GU Lirong, AN Liqiang, RAO Lixiang, ZHANG Weiqi. Dynamic response prediction of cylindrical lithium-ion batteries under impact loading[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0188

冲击载荷下圆柱形锂离子电池的动态响应预测

doi: 10.11883/bzycj-2024-0188
基金项目: 国家自然科学基金(12304116);河北省自然科学基金(A2020502005)
详细信息
    作者简介:

    黄子轩(1999- ),男,博士研究生,zxhuang@ncepu.edu.cn

    通讯作者:

    张新春(1980- ),男,博士,副教授,xczhang@ncepu.edu.cn

  • 中图分类号: O347; U469.72

Dynamic response prediction of cylindrical lithium-ion batteries under impact loading

  • 摘要: 为提高径向冲击载荷下圆柱形锂离子电池的安全性,基于膜力因子法研究了大变形下电池的动态响应特性。将电池首先简化为包括内芯和外壳的夹层梁结构,根据抗拉屈服强度建立了电池横截面的塑性屈服准则和膜力因子,进一步将膜力因子引入运动方程实现了大变形下动态响应的求解。此外,基于拉压试验测定了电池构件的力学性能,进一步建立了电池整体有限元模型。研究表明:电池位移响应和速度响应的理论结果和有限元结果具有一致性;冲击载荷下电池初始速度越高,轴力效应对动态响应的影响越大;电池最大挠度随初始速度近似线性增加,且实际的响应时间具有饱和性;电池最大挠度随内芯和外壳屈服强度之比的减小而增大,电池外壳越薄,屈服强度的影响越显著;电池最大挠度随外壳厚度的增大而减小,屈服强度比越大,外壳厚度的影响越显著。
  • 图  1  冲击载荷下圆柱形锂离子电池的力学模型

    Figure  1.  Mechanical model of cylindrical lithium-ion battery under impact loading

    图  2  不同塑性中面下电池截面的应力分布

    Figure  2.  Stress distribution along the cross-section of the battery with the plastic neutral surface at various locations

    图  3  电池的结构

    Figure  3.  Structure of the battery

    图  4  电池外壳的拉伸和内芯的压缩试验

    Figure  4.  Tension test of the casing and compression test of the inner core for the battery

    图  5  电池内芯和外壳的应力应变曲线

    Figure  5.  Stress-strain curves for core and casing of the battery

    图  6  电池夹层梁模型的轴力-弯矩屈服面

    Figure  6.  Axial force-moment yield surface for the sandwich beam model of the battery

    图  7  有限元建模及模拟结果

    Figure  7.  Finite element modeling and simulated results

    图  8  理论计算结果和有限元模拟结果的对比

    Figure  8.  Comparison of theoretical and finite element results

    图  9  初始速度对电池动态响应的影响

    Figure  9.  Effect of initial velocity on the dynamic responses of the battery

    图  10  电池质量m和参数k1k2对无量纲最大挠度的影响

    Figure  10.  Effects of mass and parameters k1 and k2 of the battery on dimensionless maximum deflection

    表  1  有限元模型材料参数

    Table  1.   Material parameters of the finite element model

    构件 厚度/mm 密度/(kg·m−3) 杨氏模量 剪切模量 屈服强度/MPa 泊松比
    内芯 8.75 2 090 Er = 0.5 GPa
    Ea = 1.5 GPa[22]
    Gr = 0.217 GPa[21]
    Ga = 0.3 GPa[21]
    μr = 0.15[16]
    μra = 0.1[21]
    μar = 0.3[21]
    外壳 0.25 7 850 160 GPa 235 0.3[7]
    下载: 导出CSV
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出版历程
  • 收稿日期:  2024-06-17
  • 修回日期:  2024-09-09
  • 网络出版日期:  2024-09-12

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