Torsion box structure, vehicle body torsion beam and electric vehicle

By adding reinforcing plates and cavity design to the torsion box structure, and using a central channel reinforcing beam to connect the left and right torsion boxes, the shortcomings of traditional torsion boxes in terms of force transmission and energy absorption are solved, improving the stability and collision safety of the vehicle body and adapting to the battery layout of different vehicle models.

CN116118415BActive Publication Date: 2026-07-10CHINA FAW CO LTD
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Patent Information

Application Number
CN202211617937.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-15
Publication Date
2026-07-10
Estimated Expiration
2042-12-15

AI Technical Summary

Technical Problem

The traditional front longitudinal beam and torsion box structure has shortcomings in force transmission and energy absorption, resulting in unsatisfactory vehicle stability and energy absorption, especially in frontal and side collisions.

Method used

By adding a front longitudinal beam lower reinforcing plate, a front longitudinal beam rear reinforcing plate, and a torsion box front reinforcing plate to the torsion box structure, multiple cavity structures are formed, and the left and right torsion boxes are connected by a central channel reinforcing beam to form an integral structure. A torsion box reinforcing crossbeam is added to adapt to the battery arrangement of different vehicle models.

Benefits of technology

It significantly improves the energy absorption capacity of the torsion box in frontal and side collisions, enhances the stability and collision safety of the vehicle body, and adapts to the battery layout requirements of different wheelbase models.

✦ Generated by Eureka AI based on patent content.
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Abstract

The application provides a torsion box structure, a vehicle body torsion beam and an electric vehicle, and belongs to the field of automobiles. The application solves the problem of poor energy absorption effect of the torsion beam in the prior art after a front collision and a side collision. The torsion box structure comprises three cavity structures, a torsion box front reinforcing plate, a front longitudinal beam lower reinforcing plate, a torsion box, a torsion box rear reinforcing plate, a rocker inner panel, a front wall baffle lower plate and a front longitudinal beam outer plate to form a first cavity, a front longitudinal beam inner plate, a front longitudinal beam rear plate, a front longitudinal beam rear reinforcing plate, the torsion box, the torsion box rear reinforcing plate, the front longitudinal beam lower reinforcing plate, the front longitudinal beam rear reinforcing plate, the rocker inner panel, a front wall middle lower plate and the front wall baffle lower plate to form a second cavity, and the front longitudinal beam rear reinforcing plate, the front longitudinal beam rear plate, the torsion box, the torsion box rear reinforcing plate and the front wall baffle lower plate to form a third cavity. The torsion box structure is mainly used for electric vehicles.
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