关键词: 快换锁止；振动模态；振幅位移；应力

Abstract: In this paper, the influence of the snap-change lock body on the Z-mode of the battery pack is studied. Through the classification adjustment and structural optimization of the Z-tolerance stroke of the snap-change lock body, the adjustment of the structure and the form of the limit mechanism, and the analysis of different hardness and stress changes of the buffer block, the computer aided engineering (CAE) analysis and the vibration bench sweep frequency test are combined. Under certain conditions, on the basis of satisfying the quick-change system and unlocking function, the optimal size, structural form and flexible connection stress value of the three key factors of the quickchange lock body tolerance displacement size, limiting mechanism form and Z-direction buffer block reverse stress size are explored and analyzed, and the optimal balance parameters are studied and determined to improve Z vibration mode, service life and economy of quick change battery pack.

Key words: Quick change lock; Vibration modes; Amplitude shift; Stress