Research on Battery Box Lightweight Based on Material Replacement

摘要

Battery box lightweighting and stiffness are two important objectives of battery box design and improvement. In order to reduce a battery box's weight without impairment of stiffness, a method of battery box parts' material replacement from mild steel sheet to Aluminium alloy steel sheet of changed depth is brought forward, the selection of the appropriate material by using the material index is studied. The thickness change equation is drawn from structural mechanical analysis and verified by finite element simulation of body parts. Before and after the material replacement, the displacement nephogram and stress nephogram is obtained through simulation analysis of the battery box and there is no obvious difference between them show that the method presented in this paper is valid.