目前关于电池包碰撞安全性问题研究较少，且大多的关注点在于电池包箱体及电池包安装位置，无法清楚地了解电池包内部的安全性． 针对这一问题，文中结合一款实例电池包的开发，建立了考虑电池包内部电池单体、触点、固定装置以及电池包内架等的精细化结构模型，从变形量和加速度两个角度、电池包整体和内部结构两个层面对电池包碰撞结果进行分析，探讨了电池包在碰撞过程中箱体及内部结构的变形与响应规律。结果表明，电池包撞击侧吊耳、内架、螺钉和电池模组均发生了不同程度的变形，电池触点及附属构件安装点处加速度峰值过大．

There are few researches on the collision safety of battery pack,and most of the researches emphasize on the battery box and its installation location instead of the internal security of the battery pack.In order to solve this problem,a refined model of battery pack,which takes into consideration the cell,the cell contact,the fixed structure and the inner shelf,was proposed,with an actual battery pack being used as the example.Then,by analyzing the collision results of battery pack and its internal structure in the aspects of deformation and acceleration,the deformation and response law of the battery box and the internal structure during the collision were investigated.The results indicate that the lifting lug near the impact position,the internal shelf,the bolt and the battery modules all deform in different degrees; and that,after the collision,the acceleration magnitudes are excessive at the cell contact and the installation point of attached components.