| 填充电池组的耐撞安全性 |
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| 引用本文： | 胡玲玲,陈圣儒,张子文,周名哲,赵昕.填充电池组的耐撞安全性[J].北京理工大学学报,2022,42(6):604-611. |
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| 作者姓名： | 胡玲玲 陈圣儒 张子文 周名哲 赵昕 |
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| 作者单位： | 1.中山大学 航空航天学院，广东 广州 510275 |
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| 基金项目： | 国家自然科学基金资助项目（11772363,12172388）；;广州市科技计划项目（201803030037）； |
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| 摘 要： | 针对圆柱电池的电池组，提出了一种新型的填充保护方式来提升电池组的耐撞安全性. 通过实验和数值模拟对比了填充电池组与无填充电池组的耐撞安全性，讨论了采用树脂和不同密度的泡沫金属作为填充材料对电池组安全性的影响. 结果表明填充电池组呈现出更高的安全性，这是由于填充材料改变了电池的受力状态，使电池受力更合理、变形更均匀，从而减少了电池的破坏风险. 树脂填充提高了电池组的硬度和刚度，在冲击荷载下，使电池组更快地进入均匀受载阶段. 泡沫金属的选取需要综合考虑材料本身吸能的能力和材料对电池组能量分布的影响，硬度适中的金属泡沫填充电池组具有较好的耐撞安全性.
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| 关 键 词： | 高速碰撞动力学 动力电池 电池组 耐撞安全 |
| 收稿时间： | 2021-10-07 |
Crashworthiness of Protected Battery Pack |
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| HU Lingling,CHEN Shengru,ZHANG Ziwen,ZHOU Mingzhe,ZHAO Xin.Crashworthiness of Protected Battery Pack[J].Journal of Beijing Institute of Technology(Natural Science Edition),2022,42(6):604-611. |
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| Authors: | HU Lingling CHEN Shengru ZHANG Ziwen ZHOU Mingzhe ZHAO Xin |
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| Affiliation: | 1.Department of Applied Mechanics & Engineering, Sun Yat-sen University, Guangzhou, Guangdong 510275, China2.CATARC Automotive Test Center (Guangzhou) Co., Ltd., Guangzhou, Guangdong 511340, China |
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| Abstract: | A new protection method was proposed to improve the crashworthiness of cylindrical battery packs. The crashworthiness of unprotected battery pack, resin protecting battery pack and metal foam protecting battery pack were studied by experiments and numerical simulations. The results show that resin protecting battery pack has higher safety under impact. This is because resin can improve the stiffness of battery pack and can make the batteries’ deformation more uniform with reasonable force conditions, thus reduce the risk of damage. Furthermore, numerical simulations were conducted to study the crashworthiness of the battery pack filled with metal foams. Simulation results show that, synthetically considering the energy absorption ability of the material and its effect on energy distribution of battery pack, the battery pack filled with metal foams with moderate hardness can present a best safety. |
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