ANALYSIS OF IMPACT OF MECHANICAL PROPERTIES OF LITHIUM-ION BATTERIES CONSIDERING AGING

Chen Guang; Chen Wenshuo; Liu Ye; Sun Xiuxiu; Jing Guoxi

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

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (3) : 535-542. DOI: 10.19912/j.0254-0096.tynxb.2024-2028

ANALYSIS OF IMPACT OF MECHANICAL PROPERTIES OF LITHIUM-ION BATTERIES CONSIDERING AGING

Chen Guang^1,2, Chen Wenshuo^1,2, Liu Ye³, Sun Xiuxiu^1,2, Jing Guoxi^1,2

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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.

Key words

lithium-ion batteries / mechanical properties / mechanical abuse / failure analysis / aging / material property distribution

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Chen Guang, Chen Wenshuo, Liu Ye, Sun Xiuxiu, Jing Guoxi. ANALYSIS OF IMPACT OF MECHANICAL PROPERTIES OF LITHIUM-ION BATTERIES CONSIDERING AGING[J]. Acta Energiae Solaris Sinica. 2026, 47(3): 535-542 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2028

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