Abstract: Using 3D software modeling and ANSYS Workbench finite element analysis, from the material selection, structure optimization two aspects of the commercial power battery bracket lightweight research, according to the results of the finite element analysis of the structure topology optimization, the final choice of glass fiber reinforced polypropylene composite material, using an integral, central position set transverse frame structure, compared with the original metal bracket weight reduction of 27%. Using Moldflow, through filling analysis, warpage analysis and so on, the better process parameters can be adjusted to provide the optimized process parameters for the needs of injection products.

Key words: Finite element analysis; Battery bracket; Lightweight

摘要： 文章利用三维软件建模和 ANSYS Workbench 有限元分析，从材质选用、结构优化、工艺分 析三方面对某商用动力电池托架进行了轻量化研究，根据有限元分析结果对结构进行拓扑优化， 最终选用玻纤增强聚丙烯复合材料，采用整体式、中心位置设置横向框架的结构，实现了相比原 金属材质托架减重 27%的效果。利用 Moldflow，通过填充分析、顶出分析等调整优化得到较优的 工艺参数。

关键词: 有限元分析；电池托架；轻量化