考虑老化的锂离子电池力学性能影响分析

陈光; 陈文硕; 刘烨; 孙秀秀; 景国玺

doi:doi:10.19912/j.0254-0096.tynxb.2024-2028

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考虑老化的锂离子电池力学性能影响分析

更新时间：2026-04-08

- 考虑老化的锂离子电池力学性能影响分析
- Vol. 47, Issue 3, Pages: 535-542(2026)
- 作者机构：
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- DOI：doi:10.19912/j.0254-0096.tynxb.2024-2028
  CLC： TM911
- Online First：07 April 2026，
  
  Published：2026
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陈光, 陈文硕, 刘烨, et al. 考虑老化的锂离子电池力学性能影响分析[J]. 2026, 47(3): 535-542.
DOI：

陈光, 陈文硕, 刘烨, et al. 考虑老化的锂离子电池力学性能影响分析[J]. 2026, 47(3): 535-542. DOI： doi:10.19912/j.0254-0096.tynxb.2024-2028.

摘要

为研究电池循环老化对锂离子电池力学性能影响

通过对不同循环次数的电池单体及组分压缩试验

分析循环次数对电池单体和电池组分材料的失效情况（失效位移和失效载荷）及电池组分材料杨氏模量分布的影响。结果表明：电池的失效位移符合正态分布特征

循环老化导致锂离子电池在压缩状态下提前出现失效

其中在压痕工况下

电池的失效位移从6.0 mm降至5.0 mm;平板压缩工况下电池的失效位移从6.8 mm降至6.4 mm。在100次循环老化条件下

电池阳极的杨氏模量从434.1 MPa提高到725.2 MPa

电池组分的杨氏模量也均符合正态分布。

Abstract

In order to study the effect of battery cyclic aging on the mechanical properties of lithium-ion batteries

the paper analyzes the effect of the cycle number on the failure of battery cells and battery component materials （failure displacement and failure load） and the distribution of Young’s modulus of battery component materials through the compression test of battery cells and components with different number of cycles. The results show that the failure displacement of the battery conforms to the normal distribution characteristics

and the cycle aging leads to the earlier failure of lithium-ion batteries under compression

in which the failure displacement of the battery decreases from 6.0 mm to 5.0 mm under the indentation condition

and that of the battery decreases from 6.8 mm to 6.4 mm under the flat-plate compression condition

and under the condition of 100 aging cycles

the Young’s modulus of the anode of the battery increases from 434.1 MPa to 725.2 MPa

and the Young’s modulus of the battery components also conforms to a normal distribution.

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references

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