Integrated structure for integrating lower vehicle body and battery pack of electric vehicle

Abstract

The invention provides an integrated structure integrating a lower car body and a battery pack of an electric car, the integrated structure comprises an integrated car body floor, the lower car body and a battery pack lower box body, the integrated car body floor comprises an integrated floor and a seat cross beam assembly, and the integrated car body floor has the functions of installing seats, bearing passengers and serving as an upper cover of the battery pack; the integrated floor is connected with the lower vehicle body through a hollow double-thread bolt, and the two ends of the seat cross beam assembly are connected with a threshold beam of the lower vehicle body through connecting joints. The battery pack lower box body is connected with a lower vehicle body through a hollow double-thread bolt and is connected with the seat cross beam assembly through a middle lifting lug; and the battery pack lower box body is connected with the battery cells through filling materials. By means of the integrated structure, high integration of the lower automobile body and the battery pack can be achieved, the weight of the whole automobile can be reduced, the volume utilization rate and the energy density of the battery pack are improved, and then the endurance mileage of the electric automobile is increased.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to an integrated structure integrating a lower body and a battery pack of an electric vehicle. Background technique [0002] With the development of new energy vehicle technology, consumers have higher and higher requirements for the cruising range of electric vehicles. The performance of the battery pack is an important factor affecting the cruising range of electric vehicles. How to improve the performance of the battery pack is the focus of automobile and battery manufacturers. In order to achieve the purpose of long cruising range of electric vehicles, it is necessary to increase the unit energy density of the battery pack as much as possible under the premise of limited space and ensuring the protection and safety of the battery cells. Improving the unit energy density of the battery pack is mainly from reducing the weight of the battery pack box and improving the ...

AI Technical Summary

Problems solved by technology

[0004] In related technologies, most of the power battery packs of new energy vehicles have a complete upper cover and a lower box, which form a closed box structure for accommodating batteries, and are installed on the body as an independent component. Such a structure As a result, there is a redundant design between the power battery pack and the body, and there is limited space for the lightweight and volume utilization of the power battery pack

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