Cross beam structure, vehicle body and vehicle

Abstract

The utility model relates to the technical field of vehicles, in particular to a cross beam structure, a vehicle body and a vehicle, the cross beam structure comprises a cross beam main body which is integrally formed, the cross beam main body is provided with a closed hollow cavity, and foamed aluminum is filled in the hollow cavity; the battery supports are arranged at intervals in the first extending direction of the cross beam body, and the battery supports are fixedly connected with one side of the cross beam body. The bending resistance and the crushing resistance of the cross beam structure can be improved, and the cross beam structure is convenient to assemble and simple in structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially relates to a beam structure, car body and vehicle. BACKGROUND

[0002] With the increase of the endurance mileage of electric vehicles, the demand for power battery on board increases, which leads to the gradual increase of the size of power battery. Larger battery pack limits the space of the car body floor beam, so that the integration of car body parts becomes an important means of lightweight car body design.

[0003] In the prior art, the front wall lower beam assembly of the vehicle is formed by assembling, welding or mechanically connecting multiple parts. The beam main part adopts a "mouth" shaped cross-section structure, which cannot have the ability to resist bending and crushing at the same time when the vehicle is in collision, thereby failing to effectively protect the battery pack connected with the front wall lower beam assembly. Moreover, the front wall lower beam assembly is spliced by welding, mechanical connection and adhesive connection of multiple stamping parts, which has many parts and a complex structure design. In addition, the strength and stiffness at the connection are lower than the overall performance of the parts due to the many joints between the parts.

[0004] Therefore, a beam structure, car body and vehicle are needed to solve the above problems. SUMMARY

[0005] The utility model aims at providing a beam structure, car body and vehicle, which can improve the bending and crushing resistance of the beam structure and is easy to assemble and has a simple structure.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The beam structure comprises:

[0008] The beam main body is integrally formed and has a closed hollow cavity filled with foamed aluminum.

[0009] A plurality of battery supports are arranged at intervals along a first direction in which the beam main body extends, and the plurality of battery supports are fixedly connected to one side of the beam main body.

[0010] In some embodiments, the battery support comprises a first connecting portion and a first mounting portion connected to each other, the first connecting portion is connected to the beam main body, and the first mounting portion protrudes away from the beam main body relative to the first connecting portion.

[0011] In some embodiments, the first connecting portion is arranged along the circumference of the first mounting portion.

[0012] In some embodiments, the first connecting portion and the first mounting portion are integrated.

[0013] In some embodiments, the beam structure further comprises a beam joint disposed at an end of the beam body along the first direction.

[0014] In some embodiments, the beam joint comprises a second connecting portion and a second mounting portion connected to each other, the second connecting portion is connected to the beam body, and the second mounting portion extends away from the beam body.

[0015] In some embodiments, the beam body has a quadrilateral cross section.

[0016] In some embodiments, the beam body is provided with a reinforcing rib.

[0017] In some embodiments, the beam body has an extension connecting portion located on the peripheral surface of the beam body.

[0018] A vehicle body comprising a floor panel, a front wall panel, and a beam structure as described above, the beam body of the beam structure being connected to the floor panel and the front wall panel.

[0019] A vehicle comprising a battery module and a vehicle body as described above, the battery module being disposed on the vehicle body.

[0020] The beneficial effects of the present application are as follows:

[0021] The beam structure provided by the present application has the following beneficial effects: the beam body is integrally formed, the hollow cavity of the beam body is filled with foamed aluminum, and a plurality of battery supports are integrated on the beam body; the integrally formed beam body replaces the plurality of stamping parts in the prior art, the structure is simple and easy to manufacture, and the manufacturing efficiency is improved; the hollow cavity is filled with foamed aluminum, the side impact performance is improved under the condition of limited cross-sectional space, the bending resistance and the rigidity of the beam body itself are ensured, the bending resistance and the compression crushing resistance of the beam body itself are improved by using the thin-walled beam body combined with foamed aluminum filling; in the case of collision, the foamed aluminum can fully absorb the collision energy and avoid damaging the power battery module, and the foamed aluminum also has certain heat insulation performance; the battery supports are integrated on the beam body, the integration degree of the beam structure is ensured, and the subsequent installation of the power battery module is facilitated.

[0022] The vehicle body provided by the present application comprises a floor panel, a front wall panel, and a beam structure as described above, the beam structure can improve the bending resistance and the compression crushing resistance of the beam structure, and the vehicle body is easy to assemble and has a simple structure.

[0023] The utility model provides a kind of vehicle, including battery module and as described above vehicle body, can promote the bending and compression crushing resistance ability of crossbeam structure, and it is convenient to assemble, simple structure. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be simply introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and these drawings for those skilled in the art without creating labor.

[0025] Figure 1 It is a schematic diagram of the crossbeam structure of the utility model;

[0026] Figure 2 It is a sectional view of battery support in the crossbeam structure of the utility model;

[0027] Figure 3 It is a sectional view of the connection of crossbeam main body and battery support in the crossbeam structure of the utility model.

[0028] In the drawing:

[0029] 1, crossbeam main body;11, first extension;12, second extension;2, foam aluminum;3, battery support;31, first mounting portion;311, connecting hole;312, reinforcing plate;32, first connecting portion;321, first connecting hole;33, first screw;4, crossbeam joint;41, second connecting portion;42, second mounting portion;43, second screw. DETAILED DESCRIPTION

[0030] Before any embodiments of the utility model are explained in detail, it is to be understood that the utility model is not limited in application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described drawings.

[0031] In the utility model, the terms "comprising", "including", "having" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitation, the element defined by the sentence "including a …" does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0032] In the utility model, the terms "connect", "combine" and "mount" can be direct connection, combination or mounting, or indirect connection, combination or mounting. Among them, the direct connection means that two parts or components are connected together without setting an intermediate part, and the indirect connection means that two parts or components are connected through at least one intermediate part.

[0033] In the utility model, the functions performed by the components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by the parts can also be performed by one part, one component, or multiple parts.

[0034] In the utility model, the terms "upper", "lower", "left", "right", "front", "rear" and the like are described in the orientation and position relationship shown in the drawings, and should not be understood as limiting the embodiments of the utility model. In addition, it should also be understood in the context that when referring to one element connected to another element "on" or "under", it can be directly connected to another element "on" or "under", or indirectly connected to another element "on" or "under" through an intermediate element. It should also be understood that the terms "upper", "lower", "left", "right", "front", "rear" and the like not only represent the positive direction, but also can be understood as the side direction. For example, the lower side can include the lower side, the left lower side, the right lower side, the front lower side and the rear lower side.

[0035] In the lightweight design of the vehicle body, in order to improve the bending and compression resistance of the beam structure, and facilitate assembly and simple structure, as shown in Figures 1-3 The utility model provides a kind of beam structure. Beam structure includes beam main body 1 and multiple battery supports 3.

[0036] Among them, beam main body 1 is integrally formed, and beam main body 1 has closed hollow cavity, and hollow cavity is filled with foamed aluminum 2. Multiple battery supports 3 are spaced apart along the first direction of beam main body 1 extension, and multiple battery supports 3 are fixedly connected with one side of beam main body 1. Among them, the first direction is Figure 1 X direction, the second direction is Figure 1 Y direction, and the third direction is Figure 1 Z direction, wherein Y direction and Z direction are arranged at an angle, and Y direction and Z direction are perpendicular to X direction.

[0037] The cross beam body 1 is integrally formed to replace the plurality of stamping parts in the prior art, which is simple in structure, easy to manufacture, and capable of improving manufacturing efficiency. The hollow cavity is filled with foam aluminum 2, which improves the side impact performance in the case of limited cross-sectional space, ensures the bending resistance and the stiffness of the cross beam body 1 itself. By using the thin-walled cross beam body 1 matched with the foam aluminum 2 filling, the bending resistance and the crushing resistance of the cross beam body 1 itself are improved, and the weight is lighter, which meets the requirements of lightweight design. In the case of collision, the foam aluminum 2 can fully absorb the collision energy to avoid damage to the power battery module, and has certain heat insulation performance. The battery support 3 is integrated on the cross beam body 1 to ensure the integration of the cross beam structure, and the subsequent installation of the power battery module is facilitated.

[0038] In some embodiments, the cross beam body 1 is made of aluminum extrusion process, which is to heat the aluminum alloy bar to a plastic state and then extrude a specific cross-sectional shape through a mold. The finished product formed by the aluminum extrusion process has good mechanical properties and high surface finish, which is suitable for mass production. In other embodiments, the cross beam body 1 can also be integrally formed by die casting or forging process, which is not limited here.

[0039] As shown in Figure 1 In some embodiments, the cross beam body 1 is integrally formed to replace the plurality of stamping parts in the prior art, which is simple in structure, easy to manufacture, and capable of improving manufacturing efficiency. The hollow cavity is filled with foam aluminum 2, which improves the side impact performance in the case of limited cross-sectional space, ensures the bending resistance and the stiffness of the cross beam body 1 itself. By using the thin-walled cross beam body 1 matched with the foam aluminum 2 filling, the bending resistance and the crushing resistance of the cross beam body 1 itself are improved, and the weight is lighter, which meets the requirements of lightweight design. In the case of collision, the foam aluminum 2 can fully absorb the collision energy to avoid damage to the power battery module, and has certain heat insulation performance. The battery support 3 is integrated on the cross beam body 1 to ensure the integration of the cross beam structure, and the subsequent installation of the power battery module is facilitated.

[0040] As shown in Figure 2 and Figure 3As shown in the drawings, in some embodiments, the battery bracket 3 comprises a first connecting portion 32 and a first mounting portion 31 connected with each other, the first connecting portion 32 is connected with the beam body 1, the first mounting portion 31 protrudes from the first connecting portion 32 towards a direction away from the beam body 1, and the first mounting portion 31 is used to connect with the beam of the power battery module. In this embodiment, the first connecting portion 32 is connected with the beam body 1 by adopting the FDS connecting process, so as to ensure the stability of the connection between the battery bracket 3 and the beam body 1. The battery mounting point is formed by arranging the first mounting portion 31, so as to support and mount the power battery module.

[0041] As shown in the drawings, Figure 1 In some embodiments, the first connecting portion 32 is arranged along the circumference of the first mounting portion 31. Specifically, a plurality of first connecting holes 321 are arranged on the first connecting portion 32 along the circumference of the first connecting portion 32, and the first screw 33 is connected with the beam body 1 through the first connecting hole 321. Through the above arrangement, the contact area of the connection between the battery bracket 3 and the beam body 1 can be ensured, so as to ensure the uniformity of the force borne by the first connecting portion 32 when the first mounting portion 31 bears the power battery module.

[0042] In some embodiments, the first connecting portion 32 and the first mounting portion 31 are integrated. Specifically, the battery bracket 3 can be made by adopting the stamping process, which is convenient for manufacturing and can ensure the strength of the battery bracket 3.

[0043] In some embodiments, a connecting hole 311 is arranged on the first mounting portion 31. By arranging the connecting hole 311, the connecting bolt is connected with the beam of the power battery module through the connecting hole 311, which is convenient for mounting the power battery module. The hole wall of the connecting hole 311 is partially thickened, which can prevent the connecting hole 311 from deforming.

[0044] In some embodiments, in order to improve the strength of the first mounting portion 31, a reinforcing plate 312 is arranged on the inner wall of the first mounting portion 31. By arranging the reinforcing plate 312, the strength of the first mounting portion 31 can be improved, so as to ensure that the battery bracket 3 will not deform after being matched with the power battery module.

[0045] As shown in the drawings, Figure 1 In some embodiments, the beam structure further comprises a beam joint 4 arranged at the end of the beam body 1 along the first direction (X direction). By arranging the beam joint 4, the beam body 1 can be connected with other components.

[0046] As shown in the drawings, Figure 1As shown in some embodiments, the beam joint 4 comprises a second connecting portion 41 and a second mounting portion 42 connected to each other, the second connecting portion 41 is connected with the beam body 1, and the second mounting portion 42 extends in a direction away from the beam body 1. Specifically, a plurality of second connecting holes are formed on the second connecting portion 41, and the second screw 43 passes through the second connecting hole and is connected with the beam body 1. The second mounting portion 42 facilitates the butt joint of the beam body 1 with other components. In this embodiment, the second screw 43 is connected with the beam body 1 through the second connecting hole by FDS process, which ensures the stable connection of the beam joint 4 with the beam body 1. In other embodiments, the second screw 43 can also be directly screwed into the beam body 1 by self-tapping.

[0047] As Figure 3 shown, in some embodiments, the cross section of the beam body 1 is quadrilateral. Through the above arrangement, the beam body 1 can have good bending and torsional resistance, ensuring the strength of the beam body 1. Moreover, as the power battery module is designed to provide more module space and realize lightweight design of the power battery module itself, the power battery module generally cancels its own beam structure, resulting in the need for the beam structure of the vehicle body to transmit collision force under the vehicle offset collision condition and the frontal collision condition. As the main collision transmission path, the beam body 1 itself has bending resistance and crushing resistance, avoiding damage to the power battery module due to structural deformation of the beam body 1 under collision conditions.

[0048] In some embodiments, the beam body 1 is provided with a reinforcing rib. By arranging the reinforcing rib on the beam body 1, the stiffness of the beam body 1 can be improved, thereby improving the bending resistance of the beam body 1, realizing the lightweight of the whole vehicle, and being more efficient for improving the overall performance of the beam body 1. Specifically, during manufacturing, a plurality of reinforcing ribs can be arranged on the beam body 1 according to actual needs, thereby further improving the bending resistance of the beam body 1.

[0049] As Figure 1As shown, in some embodiments, the cross beam body 1 has an extension connecting part located on the peripheral surface of the cross beam body 1. Specifically, the extension connecting part includes a first extension part 11 and a second extension part 12, the cross beam body 1 extends out the first extension part 11 and the second extension part 12, and is connected with the floor through the second extension part 12 from the third direction (Z direction) and is connected with the front wall through the first extension part 11 from the second direction (Y direction). Through the above arrangement, the cross beam body 1 is convenient to connect with the front wall and the floor. In this embodiment, the first extension part 11 and the second extension part 12 are located on the adjacent surface of the cross beam body 1. The first extension part 11 is connected with the front wall through the SPR connecting process, and the second extension part 12 is connected with the floor through the SPR connecting process. By adopting the SPR (Self-Piercing Riveting) connecting process, the rivet is directly pressed into the self-punching riveting, the cross beam body 1 is connected with the front wall and the floor, and the connection strength is guaranteed.

[0050] The cross beam structure provided by the utility model achieves better performance effect by adopting smaller cross section space. Compared with the existing cross beam structure, the cross beam structure of the utility model is more effective in improving overall performance by thinning the cross beam body 1 and filling with foam aluminum 2. Compared with the original design, the cross beam structure has considerable crash performance, meets the protection requirements of the power battery module under different working conditions, can significantly reduce the development mold cost, and reduce the assembly line of the host factory, save equipment, site, logistics and other inputs. The cross beam structure improves the design and development efficiency, reduces the process, reduces the connecting material between parts, reduces the manufacturing cost, and improves the overall body-in-white performance while reducing the weight.

[0051] The embodiment also provides a vehicle body, which comprises a floor, a front wall and the cross beam structure, and the cross beam body 1 of the cross beam structure is connected with the floor and the front wall. Through the connection of the cross beam structure, the front wall and the floor, the bending resistance and the crushing resistance of the assembled vehicle body can be guaranteed, and the vehicle body is convenient to assemble and has a simple structure.

[0052] The embodiment also provides a vehicle, which comprises a battery module and the vehicle body, and the battery module is arranged on the vehicle body. Through the use of the vehicle body, the bending resistance and the crushing resistance of the cross beam structure can be guaranteed, and the vehicle body is convenient to assemble and has a simple structure.

[0053] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or changes can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model claims.

Claims

1. Beam structure, characterized in that The cross beam structure comprises: a cross beam body (1) integrally formed, the cross beam body (1) having a closed hollow cavity filled with foamed aluminum (2); a plurality of battery supports (3) arranged at intervals along a first direction in which the cross beam body (1) extends, and fixedly connected to one side of the cross beam body (1).

2. The beam structure of claim 1, wherein The battery support (3) comprises a first connecting portion (32) and a first mounting portion (31) connected to each other, the first connecting portion (32) being connected to the cross beam body (1), and the first mounting portion (31) protruding in a direction away from the cross beam body (1) relative to the first connecting portion (32).

3. The beam structure of claim 2, wherein, The first connecting portion (32) is arranged along a circumferential direction of the first mounting portion (31).

4. The beam structure of claim 2, wherein, The first connecting portion (32) and the first mounting portion (31) are in an integrated structure.

5. The beam structure of claim 1, wherein The cross beam structure further comprises a cross beam joint (4) arranged at an end of the cross beam body (1) along the first direction.

6. The beam structure of claim 5, wherein, The cross beam joint (4) comprises a second connecting portion (41) and a second mounting portion (42) connected to each other, the second connecting portion (41) being connected to the cross beam body (1), and the second mounting portion (42) extending in a direction away from the cross beam body (1).

7. Beam structure according to any of claims 1-6, characterized in that The cross beam body (1) has a quadrilateral cross section.

8. Beam structure according to any of claims 1-6, characterized in that The cross beam body (1) is provided with a reinforcing rib.

9. Beam structure according to any of claims 1-6, characterized in that The cross beam body (1) has an extension connecting portion located on a peripheral surface of the cross beam body (1).

10. Vehicle body, characterized in that The cross beam structure comprises a floor, a front wall, and a cross beam structure according to any one of claims 1-9, the cross beam body (1) of the cross beam structure being connected to the floor and the front wall.

11. Vehicle, characterized in that The vehicle body comprises a battery module and a vehicle body according to claim 10, the battery module being arranged on the vehicle body.

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