Connecting structure of power battery pack frame and vehicle body mounting beam of new energy vehicle

Abstract

The invention relates to a connecting structure of a power battery pack frame and a vehicle body mounting beam of a new energy vehicle and belongs to the technical field of automobile design and manufacturing. The connecting structure of the power battery pack frame and the vehicle body mounting beam of the new energy vehicle comprises the power battery pack frame, the vehicle body mounting beam,a mounting reinforcing plate, a nut box, a nut plate and a bolt, wherein the bolt sequentially penetrates through the through hole of the power battery pack frame, the through hole of the vehicle bodymounting beam, the through hole of the nut box, and the threaded hole of the nut plate; the nut plate is arranged inside the nut box, and the nut box forces the nut plate to move horizontally. The connecting structure of the power battery pack frame and the vehicle body mounting beam of the new energy vehicle optimizes the structural form of nuts and bolts in respect of tolerance matching, thereby effectively preventing the risk of pulling-out of standard components.

Description

technical field [0001] The invention relates to the technical field of automobile design and manufacture, and more specifically, the invention relates to a connection structure between a new energy vehicle power battery pack frame and a vehicle body mounting beam. Background technique [0002] In the prior art, the installation point of the new energy vehicle power battery pack frame is in the form of a welded nut plate, and a projection welded nut with a mechanical performance level of 10 is used, such as figure 1 As shown, the opening of nut plate 1 is Ф11 ( figure 1 .③), the opening of the body mounting beam 2 is Ф13 ( figure 1 .②), the power battery pack frame 3 opening is Ф17 or more (considering the body welding tolerance and assembly tolerance, figure 1 .① shown), the installation bolts need to use 10.9 large flange bolts with a diameter of Ф21 or more; the width of M10 projection welding nuts is 16mm ( figure 1 .④), when the axial force of the bolt 4 is too large,...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the installation point of the new energy vehicle power battery pack frame is in the form of a welded nut plate, and a projection welded nut with a mechanical performance level of 10 is used, such as figure 1 As shown, the opening of nut plate 1 is Ф11 ( figure 1 .③), the opening of the body mounting beam 2 is Ф13 ( figure 1 .②), the power battery pack frame 3 opening is Ф17 or more (considering the body welding tolerance and assembly tolerance, figure 1 .① shown), the installation bolts need to use 10.9 large flange bolts with a diameter of Ф21 or more; the width of M10 projection welding nuts is 16mm ( figure 1 .④), when the axial force of the bolt 4 is too large, it is easy to pull out from the body, causing reliability and safety hazards

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