A longitudinal and horizontal beam structure under the electric vehicle body

Abstract

The invention relates to a lower body longitudinal and cross beam structure for motor cars. The structure comprises a first front longitudinal beam, a second front longitudinal beam, a first cross beam and an intermediate passage; the structure also comprises a first sill beam, a second sill beam, a second cross beam and a third cross beam; an end of the first front longitudinal beam is installed above the first sill beam; an end of the second front longitudinal beam is installed above the second sill beam; two ends of the first cross beam are respectively connected to middle sections of the first front longitudinal beam and the second front longitudinal beam; two ends of the second cross beam are respectively connected to ends of the first front longitudinal beam and the second front longitudinal beam; the first cross beam and the second cross beam are staggered in height; the third cross beam is installed at the lower part of a front coaming plate; two ends of the third cross beam are respectively overlapped with the first front longitudinal beam and the second front longitudinal beam; the intermediate passage has a beam structure. The structure of the invention is different from the present technologies in that the battery pack arrangement space is greatly increased and the safety of the whole car is not affected; a novel energy transmission path is formed.

Description

technical field [0001] The invention relates to the technical field of electric vehicle frame structures, in particular to a longitudinal and horizontal beam structure under the electric vehicle body. Background technique [0002] The body-in-white structure of a passenger car generally consists of an upper body, a lower body, and opening and closing parts, and the longitudinal beams and beams on the lower body are important components of the lower body. It provides mounting points for the chassis, seats, etc., and is the main load-bearing part of the entire vehicle body, which plays an important role in the safety of the vehicle. Especially in the process of frontal collision, 80% of the energy passes through the longitudinal Beams and beams are used for transmission. Therefore, the layout of longitudinal beams and beams on the lower body plays a vital role in the safety of the whole vehicle. Today's lower body longitudinal beams, beam layout and force transmission path a...

AI Technical Summary

Problems solved by technology

[0005] For this reason, it is necessary to provide a longitudinal and transverse beam structure under the electric vehicle body, which is used to solve the technical problem in the prior art that the underfloor longitudinal beams cannot be arranged, resulting in a decrease in the safety factor of the entire vehicle.

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