An electric vehicle composite material hair cover inner panel

Abstract

The invention relates to an inner panel of a composite material hair cover for an electric vehicle. The inner panel of the hair cover and the outer panel of the engine cover are glued and connected by an adhesive, the inner panel of the hair cover has flanging, and the connection structure of the adhesive connection includes a hopper, Blocking block and anti-overflow block; multiple hoppers are respectively set on the flange of the inner panel of the hood; the blocking block is set on the side of the hopper close to the outer plate; the shape of the blocking block matches the hopper, and the blocking block is higher than the inner plate Plane; two kinds of adhesives with different properties can be separated through the blocking block to realize mixed bonding; the anti-overflow block is located on the side of the outer plate close to the inner plate, and the shape of the anti-overflow block is determined according to the edge shape of the inner plate. The anti-overflow block is higher than the plane of the inner plate, which can prevent the adhesive from overflowing. The invention adopts integrated injection molding of composite materials, which has low mold opening cost and high production efficiency. Through the mixed-element connection, the mechanical properties of different adhesive layers are rationally utilized, the stress concentration at the end is reduced, and better adhesive performance is achieved. , to ensure the aesthetics of bonding and save costs.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to an inner panel of a hair cover made of composite materials for an electric vehicle. Background technique [0002] With the increasingly prominent environmental problems, automobile energy saving and emission reduction are getting more and more attention from automobile manufacturers. On the one hand, the lightweight of automobiles is getting higher and higher, and the use of composite materials to replace traditional sheet metal parts is an important way to reduce weight; on the other hand, new energy vehicles are developing rapidly, and their structures are different from traditional vehicles. There is no engine at the front end, so the hood does not need to consider the thermal deformation caused by the heat dissipation of the engine; secondly, the size of the hood of the new energy vehicle is also smaller than that of the traditional car, and the structural rigidity is easier ...

AI Technical Summary

Problems solved by technology

However, the existing bonding structure is connected by a whole piece of adhesive, which is likely to cause stress concentration at the end of the overlapping area and unstable connection. At the same time, sometimes in order to improve the connection strength, too much adhesive is used, which will cause Waste of raw materials, increased production costs, etc.

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