Platform electric vehicle lower vehicle body structure

Abstract

The invention relates to a platform electric vehicle lower vehicle body structure, and relates to the technical field of automobile design and manufacturing. The platform-based electric vehicle lower vehicle body structure comprises a lower vehicle body platform beam frame, wherein the lower vehicle body platform beam frame comprises a pair of front longitudinal beams, wheel cover edge beams, threshold beams and rear longitudinal beams which are symmetrically arranged; a first cross beam, a second cross beam, a third cross beam and a fourth cross beam are sequentially arranged between the doorsill beams; a fifth cross beam and a sixth cross beam are sequentially arranged between the rear longitudinal beams; the rear end of the front longitudinal beam is of a herringbone structure, the outer side end of the herringbone structure is connected with the doorsill beam, and the inner side end of the herringbone structure is connected with the first cross beam; the front end of the central channel beam is connected with the front wall front cross beam, the central channel beam stretches across the first cross beam and the second cross beam, and the rear end stops to the third cross beam. According to the lower vehicle body structure, development of other vehicle types and installation of different battery pack sizes can be achieved, the platformization requirement is met, and collision loads are effectively transmitted with a small energy absorption space.

Description

technical field [0001] The present invention relates to the technical field of automobile design and manufacture, and more particularly, the present invention relates to a platform-based lower body structure of an electric vehicle. Background technique [0002] In the existing technology, most of the A0 / A-class pure electric vehicles on the market are fuel-powered vehicles instead of electric, and the pure electric platform has not been realized. In terms of layout space, the size of the A-class vehicle has not been optimized, resulting in a small space for power battery layout and a small space for the passenger compartment. At the same time, the vehicle curb weight is large, and the lightweight coefficient is poor. The weight of the car limits the cruising range of pure electric vehicles. In addition, with the increasingly stringent requirements of safety regulations, consumers have higher and higher requirements for vehicle safety, and the platform structure of pure elec...

AI Technical Summary

Problems solved by technology

[0004] 1. The non-platform lower body structure cannot realize the evolution and expansion of other models, or the generalization of parts is low during expansion;

[0005] 2. The other lower body structure provides a small installation space for the power battery, and the space utilization rate is low, resulting in a small capacity of the battery, and at the same time, the weight of the vehicle is large and the cruising range is low;

[0006] 3. For models of the same level, other lower body structures have a poor balance between the energy-absorbing space and the occupant seating space. The large energy-absorbing space results in small occupant seating space and poor passenger comfort;

[0007] 4. The non-platform lower body cannot realize the installation of battery packs of different sizes or the installation points on the body are not universal

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