Novel Lightweight and Protective Battery System Based on Mechanical Metamaterials
作者机构：Vehicle Energy and Safety Laboratory(VESL)Department of Automotive EngineeringSchool of Transportation Science and EngineeringBeihang UniversityBeijing100191China Institute of Unmanned SystemBeihang UniversityBeijing100191China Key Laboratory Impact and Safety EngineeringMinistry of Education and Department of Mechanics and Engineering ScienceFaculty of Mechanical Engineering and MechanicsNingbo UniversityNingbo315211ZhejiangChina
出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)
年 卷 期：2021年第34卷第6期
页 面：862-871页
核心收录：
学科分类：02[经济学] 0202[经济学-应用经济学] 020208[经济学-统计学] 07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0714[理学-统计学（可授理学、经济学学位）] 070103[理学-概率论与数理统计] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学]
基 金：the National Science Foundation of China(Nos.11872099 and 11902015) the National Key Research and Development Program of China(2017YFB0103703) the Fundamental Research Funds for the Central Universities,Beihang University
主 题：Lightweight Lattices Metamaterials Structural battery Battery safety Internal short circuit
摘 要：The challenges facing electric vehicles with respect to driving range and safety make the design of a lightweight and safe battery pack a critical *** study proposes a multifunctional structural battery system comprising cylindrical battery cells and a surrounding lightweight lattice *** lattice density distribution was optimized via topological optimization to minimize stress on the battery during *** a single 18650 cylindrical battery cell,non-uniform lattices were designed featuring areas of increased density in an X-shaped pattern and then fabricated by additive manufacturing using stainless steel *** testing of the assembled structural battery system revealed that the stronger lattice units in the X-shaped lattice pattern resisted deformation and helped delay the emergence of a battery short ***,the short circuit of the structural battery based on a variable-density patterned lattice was∼166%later than that with a uniform-density *** element simulation results for structural battery systems comprising nine battery cells indicate that superior battery protection is achieved in specially packed batteries via non-uniform lattices with an interconnected network of stronger *** proposed structural battery systems featuring non-uniform lattices will shed light on the next generation of lightweight and impact-resistant electric vehicle designs.
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