Composite engine hood inner panel of electric vehicle

Abstract

The invention relates to a composite engine hood inner panel of an electric vehicle. An engine hood inner panel and an engine hood outer panel are connected in a gluing manner through an adhesive; theengine hood inner panel is provided with a flange; the gluing connection structure comprises a plurality of hoppers, stop blocks and a spill-proof block; the hoppers are respectively arranged on theflange of the engine hood inner panel; the stop blocks are arranged on the side near the outer panel, in the hoppers; the shape of each of the stop blocks is matched with that of the corresponding hopper; the stop blocks are higher than the plane of the inner panel; two kinds of adhesive with different properties can be separated by the stop blocks to achieve hybridization gluing; the spill-proofblock is located on the side near the inner panel, of the outer panel; the shape of the spill-proof block is determined according to the shape of the edge of the inner panel; the spill-proof block ishigher than the plane of the inner panel to prevent the adhesive form spilling; the composite-material engine hood inner panel disclosed by the invention is formed by adopting integrated injection molding of composites, and is low in the mold opening cost and high in the production efficiency; and through adoption of the hybridization connection, mechanical properties of different cohesive glue layers are reasonably utilized, the stress concentration at end heads is reduced, better adhesive properties are achieved, beautiful appearance of gluing is guaranteed, and the cost is saved.

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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