Impact response analysis and optimization of automotive battery packs filled with negative Poisson ratio structures

CHEN Yiwen; LI Yu; YANG Kun; WANG Yibo

doi:DOI:10.16579/j.issn.1001.9669.2026.03.012

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Impact response analysis and optimization of automotive battery packs filled with negative Poisson ratio structures

·Optimization·Reliability· | 更新时间：2026-03-16

- Impact response analysis and optimization of automotive battery packs filled with negative Poisson ratio structures
- Journal of Mechanical Strength Vol. 48, Issue 3, Pages: 104-113(2026)
- 作者机构：
  
  辽宁工业大学机械工程与自动化学院，锦州 121001
- 作者简介：
  
  CHEN Yiwen, E-mail: cccchenyiwen@163.com
- 基金信息：
  
  Scientific Research Funding Project of Liaoning Provincial Department of Education(JQL202015406)
- DOI：DOI:10.16579/j.issn.1001.9669.2026.03.012
  CLC：
- Received：18 May 2024，
  
  Revised：2024-07-09，
  
  Published：15 March 2026
- 稿件说明：
移动端阅览
陈艺文，李煜，杨昆，等. 负泊松比结构填充汽车电池包的冲击响应分析与优化［J］. 机械强度，2026，48（3）：104-113.

CHEN Yiwen，LI Yu，YANG Kun，et al. Impact response analysis and optimization of automotive battery packs filled with negative Poisson ratio structures［J］. Journal of Mechanical Strength，2026，48（3）：104-113.
陈艺文，李煜，杨昆，等. 负泊松比结构填充汽车电池包的冲击响应分析与优化［J］. 机械强度，2026，48（3）：104-113. DOI：

CHEN Yiwen，LI Yu，YANG Kun，et al. Impact response analysis and optimization of automotive battery packs filled with negative Poisson ratio structures［J］. Journal of Mechanical Strength，2026，48（3）：104-113. DOI：

摘要

目的

电动汽车电池包的安全性能对车辆整体安全性具有重要作用。由于电动汽车具有独特的结构和动力系统，其在碰撞安全方面面临更多挑战。为最大限度地提高电动汽车电池包的安全性能，提出将负泊松比材料填充至电池包，利用其轻质、隔振性好和抗冲击性能高等性能特点，提升电池包的抗冲击性能和安全性能。

方法

首先，以具有内凹六边形胞元结构的负泊松比材料为研究对象，采用准静态压缩试验和仿真，验证内凹六边形负泊松比结构具有明显的负泊松比效应；然后，将负泊松比材料填充至电池包中，进行冲击响应分析；最后，采用响应面优化方法，以负泊松比电池包的最大等效应力最小和变形最小为优化目标，对用负泊松比材料填充的电池包的整体结构进行优化。

结果

结果表明，负泊松比电池包的最大等效应力相较原型电池包减小了26.93%，最大变形减小了36.92%，最大加速度减小了44.76%，负泊松比电池包具有更加优越的安全性能。相较于优化前，优化后的负泊松比电池包的安全性得以进一步提升。

Abstract

Objective

The safety performance of the battery pack is a critical factor for the overall safety of electric vehicles. Owing to the unique structures and power systems of electric vehicles

they face more challenges in crash safety. To maximize the safety performance of electric vehicle battery packs

the negative Poisson ratio materials were filled into the battery packs. By leveraging the superior properties of negative Poisson ratio materials

such as light weight

excellent vibration isolation and high impact resistance

the impact resistance and safety performance of the battery packs are enhanced.

Methods

First

the negative Poisson ratio material with a concave hexagonal cell structure was taken as the research object. Quasi-static compression test and simulation were carried out to verify that the concave hexagonal structure with negative Poisson ratio structure exhibits an obvious negative Poisson ratio effect. Second

the negative Poisson ratio material was filled into the battery pack

and the impact response analysis was conducted on the negative Poisson ratio-structure-filled battery pack. Finally

the response surface optimization method was adopted

with the minimization of the maximum equivalent stress and the maximum deformation of the battery pack filled with negative Poisson ratio material as the optimization objectives

to optimize the overall structure of the battery pack filled with negative Poisson ratio material.

Results

The results show that the maximum equivalent stress of the battery pack filled with negative Poisson ratio material is reduced by 26.93% compared with that of the original battery pack

the maximum deformation is decreased by 36.92%

and the maximum acceleration is decreased by 46.43%. The battery pack filled with negative Poisson ratio material demonstrates significantly superior safety performance. In addition

the safety performance of the optimized battery pack filled with negative Poisson ratio material is further improved in comparison with that before optimization.

关键词

Keywords

references

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