Transactions of Materials and Heat Treatment

Title：Numerical simulation on ironing of square aluminium case for power battery

Authors： Liu Chang Lai Xinghua Wang Ce Wu Zhongwang Hu Jianfeng He Yao Lu Haiwu Wu Shang

Unit： Suzhou Automobile Research Institute (Xiangcheng) Tsinghua University VT Industrial Technology Co. Ltd. Suzhou Sinnotech Technology Co. Ltd. Zhejiang Zhongze Precision Technology Co. Ltd.

KeyWords： power battery square aluminium case ironing thinning rate stamping

ClassificationCode：TG386.32

year,vol(issue):pagenumber：2020,45(5):61-69

Abstract：

For the aluminum case of square lithium battery, the finite element numerical simulation of ironing was conducted by the stamping forming software Dynaform. Firstly, the static tensile tests of sheet metal under three directions were carried out, and the stress-strain curves and the anisotropy coefficients under three directions of material were obtained. Secondly, the ultimate thinning rate test of sheet metal was carried out, and the maximum thinning rate of material was obtained. Then, the finite element model was established based on software Dynaform, and the sheet metal was simulated by 3D solid element. Furthermore, the problem was solved by dynamic explicit nonlinear finite element analysis software LS-DYNA. Finally, the calculation results were analyzed by software Dynaform. The results show that the simulation results of ironing are in good agreement with the actual products in morphology, thickness, height and formability, and the validity of ironing simulation method is verified to provide an important virtual prediction and lightweight design support for thin-walled aluminium case of lithium battery.

Funds：

江苏省科技成果转化专项资金项目（BA2016146）；江苏省工业和信息产业转型升级专项资金省重大技术攻关项目（Z201905）

刘畅（1992-），男，硕士，工程师，E-mail：liuchang_just@163.com；通讯作者：赖兴华（1983-），男，博士，高级工程师，E-mail：ryanlai@vt-ind.com

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