关键词: 下车体；平台化；通用化；关键接口

Abstract: The article introduces the universal design of the vehicle underbody, considering key interface factors that affect the generalization of each module. Based on the study of the platform universal design principle, the key design points of realizing the universal, such as structure, block and lap are expounded. On the premise of meeting the platformization requirements of key interfaces and balancing factors such as cost, cycle, performance requirements, and manufacturing process difficulty during the product development, the universality of key components for each module of the vehicle underbody is maximized for making contributions to the rapid and flexible entry of vehicle products into the market.

Key words: Underbody; Platform; Generalization; Key interface factor