In this study, the shape of the exterior, not the inside of the product, was modified. Various exterior shape change plans were compared and reviewed through injection molding analysis, and among them, the most effective shape for suppressing warpage deformation was derived. The shape of the product was modified to optimize the bending deformation of the cover located at the top of the automobile battery case. The analysis was conducted under a total of three conditions, each of shape A, which is a rectangular parallelepiped shape at the top of the product, and shape B, which is concave on the side of the product. As a result of the study, both shape A and shape B were reduced compared to the amount of bending deformation of the original shape. Among them, shape B2, which showed the largest reduction, decreased by 82.096% from the amount of bending deformation of the original shape.

Generally, the characteristics of battery cover has been effected on the expected life span and durability of battery. In this study, the heat shield performance of battery cover was investigated experimentally. Also, the cooling effect of battery for each conditions(material and structral conditions of battery cover) was investigated. As the results, the heat shield performance for heating case is excellent in the case of thickness increasing of battery cover. The characteristics for heating case is more effected on the thermal damage than that of cooling case.