冲击载荷下圆柱形锂离子电池的动态响应预测
O347; 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...
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| Published in | 爆炸与冲击 Vol. 45; no. 2; pp. 159 - 170 |
|---|---|
| Main Authors | , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
华北电力大学河北省电力机械装备健康维护与失效预防重点实验室,河北保定 071003
01.02.2025
华北电力大学机械工程系,河北保定 071003%华北电力大学机械工程系,河北保定 071003 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-1455 |
| DOI | 10.11883/bzycj-2024-0188 |
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| Abstract | O347; 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. |
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| AbstractList | O347; 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. |
| Abstract_FL | This article studies the dynamic response characteristics of cylindrical lithium-ion batteries under large deformation based on the membrane factor method to improve the safety performance of batteries under radial dynamic impacting.Firstly,the battery was simplified to a sandwich beam consisting of a casing and an inner core.The plastic yield criterion and membrane factor of the battery cross-section were established based on tensile yield strengths.The membrane factor was introduced into the motion equation to solve the dynamic response under large deformation.Furthermore,the mechanical properties of the battery components were determined based on tensile and compression tests.Then the finite element(FE)model of the battery was developed.It has been shown that the theoretical and FE results of the displacement and velocity responses of the battery were in good agreement.The larger the initial velocity of the battery under impact loading,the stranger the axial force effect on the dynamic response.The maximum deflection of the battery increases approximately linearly with the initial velocity,and the actual response time shows saturation.The maximum deflection of the battery increases with the decrease of the ratio of casing yield strength to core yield strength.The effect of yield strength is significant when the battery casing is thin.The maximum deflection of the battery decreases with the increase of casing thickness.Under a high yield strength ratio,the effect of casing thickness is significant.The research can provide technical support for failure prediction and structural safety design of batteries. |
| Author | 黄子轩 安利强 张玮琦 张新春 顾丽蓉 饶理想 |
| AuthorAffiliation | 华北电力大学机械工程系,河北保定 071003%华北电力大学机械工程系,河北保定 071003;华北电力大学河北省电力机械装备健康维护与失效预防重点实验室,河北保定 071003 |
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| Author_FL | HUANG Zixuan ZHANG Xinchun RAO Lixiang GU Lirong ZHANG Weiqi AN Liqiang |
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| DocumentTitle_FL | Dynamic response prediction of cylindrical lithium-ion batteries under impact loading |
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| Keywords | impact loading 动态响应 锂离子电池 membrane factor method 大变形 膜力因子法 冲击载荷 large deformation dynamic response lithium-ion battery |
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| Publisher | 华北电力大学河北省电力机械装备健康维护与失效预防重点实验室,河北保定 071003 华北电力大学机械工程系,河北保定 071003%华北电力大学机械工程系,河北保定 071003 |
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| Title | 冲击载荷下圆柱形锂离子电池的动态响应预测 |
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