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Numerical Simulation Study on Battery-Casing Sealing Considering Rubber Aging
Journal of Mechanics ( IF 1.7 ) Pub Date : 2020-10-14 , DOI: 10.1017/jmech.2020.39
Yijie Huang , Fei Guo , Yuchao Ke , Fangyong Wu , Xiaohong Jia , Yuming Wang

Battery-casing sealing is the key factor for secure travel of new energy vehicles. We constructed a relatively accurate mechanical-simulation model by selecting a constitutive model, analyzing the influence of thermal elongation, verifying the grid-independence and comparing numerically by the pressure-measurement film on the basis of studying the physical performance of a certain type of sealing material that had been used in battery-casings after aging. Based on a porous-media model and combined with changes of macroscopic and microscopic contact characteristics of materials at different times after aging, the evolution rule of sealing performance with time was analyzed quantitatively by calculating the leakage. By analyzing the structure of circular arc bulge on the surface of sealing material, the radius of circular arc bulge with better sealing performance was obtained, which could reduce the leakage of sealing structure during the material’s lifecycle.



中文翻译:

考虑橡胶老化的电池壳体密封的数值模拟研究

电池外壳密封是确保新能源汽车安全行驶的关键因素。在研究某种类型的密封件的物理性能的基础上,我们通过选择本构模型,分析热伸长率的影响,验证网格独立性并通过压力测量膜进行数值比较,构建了相对准确的机械模拟模型。老化后用于电池外壳的材料。基于多孔介质模型,并结合材料在老化后不同时间的宏观和微观接触特性的变化,通过计算泄漏量定量分析了密封性能随时间的演变规律。通过分析密封材料表面的圆弧凸起的结构,

更新日期:2020-12-18
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