A body sill beam structure and a hydrogen energy vehicle

Abstract

The present invention provides a body sill beam structure and a hydrogen energy vehicle. The body sill beam structure includes an outer side panel, an inner side panel, a connecting plate, and a metal profile. The bottom of the connecting plate is adapted to the top of the metal profile and is fixedly connected by structural adhesive. The thickness of the structural adhesive between the connecting plate and the metal profile is not less than 3 mm. The outer side panel is bent, and the lower end is fixedly connected to the outer end of the connecting plate. The inner side panel is bent, and the lower end is fixedly connected to the inner end of the connecting plate. The upper end of the outer side panel is fixedly connected to the upper end of the inner side panel, so that a sealed cavity is formed in the cross section by the outer side panel, the inner side panel, and the connecting plate. The materials of the outer side panel, the inner side panel, and the connecting plate are carbon fiber composite materials. The beneficial effect of the technical solution proposed by the present invention is that by appropriately increasing the thickness of the adhesive layer, the relative minute deformation caused by the difference in the coefficient of thermal expansion between carbon fiber and aluminum alloy can be absorbed, and the connection stability between carbon fiber and metal materials can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen energy vehicles, and particularly to a body sill beam structure and a hydrogen energy vehicle. Background Art

[0002] The body sill and floor are very important automotive protection components, which can effectively resist external intrusion during a side collision of the vehicle, protect the integrity of the occupant compartment, and reduce the injury of the vehicle occupants. Limited by the width space of the vehicle, the driver's and passengers' seats inside the vehicle are fixed on the floor crossbeam, which is very close to the side collision area. This requires the body sill to have sufficient stiffness and strength to resist the impact of side collisions. At the same time, the floor and seat crossbeam structure can provide sufficient support for the sill, quickly push the cockpit away from the collision area, and reduce the intrusion amount and intrusion speed of the side structure into the occupant compartment.

[0003] The application of carbon fiber composite materials to the vehicle body structure can significantly reduce the vehicle body weight. However, the carbon fiber parts also have some characteristics in their own performance. For example, when the carbon fiber laminate structure bears out-of-plane impact loads, the energy absorption effect is poor. Therefore, when applied to the lower body structure that needs to bear vehicle collision loads, it is difficult to meet the relevant requirements. Applying carbon fiber to the upper body to achieve vehicle body weight reduction is an effective way. For a vehicle body with a metal material for the lower body and mainly carbon fiber for the upper body of the occupant compartment, the connection and cooperation scheme between the upper and lower bodies at the sill beam position is one of the difficulties, and it is necessary to consider the assembly of the upper and lower bodies, the difference in thermal expansion coefficients between carbon fiber and metal materials, and the connection reliability, etc. Summary of the Invention

[0004] In view of this, the embodiments of the present invention provide a body sill beam structure and a hydrogen energy vehicle. By appropriately increasing the thickness of the adhesive layer, the relative small deformation caused by the difference in thermal expansion coefficients between carbon fiber and metal materials can be absorbed, and the connection stability between carbon fiber and metal materials can be improved.

[0005] The embodiments of the present invention provide a body sill beam structure, including an outer side panel, an inner side panel, a connecting plate, and a metal profile;

[0006] The bottom of the connecting plate is adapted to the top of the metal profile and is fixedly connected by structural adhesive. The thickness of the structural adhesive between the connecting plate and the metal profile is not less than 3 mm. The outer side panel is bent, and the lower end is fixedly connected to the outer end of the connecting plate. The inner side panel is bent, and the lower end is fixedly connected to the inner end of the connecting plate. The upper end of the outer side panel is fixedly connected to the upper end of the inner side panel, so that a closed cavity is formed in cross-section by the outer side panel, the inner side panel, and the connecting plate. The materials of the outer side panel, the inner side panel, and the connecting plate are carbon fiber composite materials.

[0007] Further, the upper end of the outer side panel is turned up to form an outward turned edge, the upper end of the inner side panel is turned up to form an inward turned edge, and the outward turned edge and the inward turned edge are fixedly connected by structural adhesive.

[0008] Further, an inclined surface inclined outward is provided at the upper end inside the metal profile, so that the connecting plate is arranged in a Z shape.

[0009] Further, the outer end of the connecting plate is bent downward to form a downward bent portion, the downward bent portion and the outer side of the metal profile are fixedly connected by structural adhesive, and the lower end of the outer side panel and the downward bent portion are fixedly connected by structural adhesive.

[0010] Further, the lower end of the inner side panel is bent inward to form an inward bent edge, the upper surface of the inward bent edge is used for connecting with the floor, and the lower surface of the inward bent edge and the upper surface of the connecting plate are fixedly connected by structural adhesive.

[0011] Further, the metal profile includes an upper profile and a lower profile, the upper surface of the upper profile is adapted to and fixedly connected with the lower surface of the connecting plate, the lower surface of the upper profile is flat, the upper surface of the lower profile is flat, and the upper surface of the lower profile is adapted to and fixedly connected with the lower surface of the upper profile by structural adhesive.

[0012] Further, upper flanges extend outward and inward from the bottom of the upper profile, lower flanges opposite to the upper flanges extend outward and inward from the top of the lower profile, positioning holes are provided through the upper flanges, and mating holes corresponding to the positioning holes are provided through the lower flanges. The positioning holes and the mating holes are used to cooperate with fasteners to fixedly connect the upper profile and the lower profile.

[0013] Further, avoidance holes are provided at positions corresponding to the positioning holes on the connecting plate and the inner side panel.

[0014] Further, the metal profile is of a cavity structure, and a plurality of reinforcing ribs are provided in the cavity of the metal profile. The plurality of reinforcing ribs divide the inner cavity of the metal profile into a plurality of small cavities.

[0015] An embodiment of the present invention further provides a hydrogen energy vehicle, including the body sill beam structure as described above.

[0016] The beneficial effects brought by the technical solution provided by the embodiment of the present invention are as follows: The upper part of the occupant compartment mainly uses carbon fiber composite materials, and the lower part mainly uses metal materials. The connecting plate is used to connect the outer side panel, the inner side panel and the metal profile. The thickness of the structural adhesive between the connecting plate and the metal profile is not less than 3 mm. By appropriately increasing the thickness of the adhesive layer, the relative minute deformation caused by the difference in the coefficient of thermal expansion between carbon fiber and metal can be absorbed, and the stability of the connection between carbon fiber and metal materials can be improved. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural view of an embodiment of the body sill beam structure provided by the present invention.

[0018] In the figure: outer side panel 1, outward flanging 11, inner side panel 2, inward flanging 21, inner bending edge 22, connecting plate 3, lower bending part 31, metal profile 4, inclined surface 41, upper profile 42, upward flanging 421, positioning hole 422, lower profile 43, downward flanging 431, mating hole 432, reinforcing rib 44, structural adhesive 5, sealed cavity 6, floor 7, relief hole 8. Detailed Embodiment

[0019] To make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the drawings.

[0020] The embodiments of the present invention provide a body sill beam structure and a hydrogen energy vehicle. Any body sill beam structure and hydrogen energy vehicle including those provided by the present invention fall within the scope of protection of the present invention. The innovation of the present invention lies in the body sill beam structure. Therefore, a specific description of the body sill beam structure will be made.

[0021] Please refer to Figure 1 , the embodiments of the present invention provide a body sill beam structure, including an outer side panel 1, an inner side panel 2, a connecting plate 3 and a metal profile 4.

[0022] The bottom of the connecting plate 3 is adapted to the top of the metal profile 4 and is fixedly connected by a structural adhesive 5. The thickness of the structural adhesive 5 between the connecting plate 3 and the metal profile 4 is not less than 3 mm. The outer side panel 1 is bent, and the lower end is fixedly connected to the outer end of the connecting plate 3. The inner side panel 2 is bent, and the lower end is fixedly connected to the inner end of the connecting plate 3. The upper end of the outer side panel 1 is fixedly connected to the upper end of the inner side panel 2, so that the outer side panel 1, the inner side panel 2 and the connecting plate 3 form a sealed cavity 6 in cross-section. The materials of the outer side panel 1, the inner side panel 2 and the connecting plate 3 are carbon fiber composite materials. In this embodiment, the material of the metal profile 4 is aluminum alloy.

[0023] In the technical solution provided by the present invention, the upper part of the passenger compartment mainly uses carbon fiber composite materials, and the lower part of the vehicle body mainly uses aluminum alloy materials. The connecting plate 3 is used to connect the outer side panel 1, the inner side panel 2 and the metal profile 4. The thickness of the structural adhesive 5 between the connecting plate 3 and the metal profile 4 is not less than 3 mm. By appropriately increasing the thickness of the adhesive layer, the relative small deformation caused by the difference in the thermal expansion coefficients between carbon fiber and aluminum alloy can be absorbed, and the connection stability between carbon fiber and metal materials can be improved.

[0024] In order to improve the connection stability between the outer side panel 1 and the inner side panel 2, the upper end of the outer side panel 1 is folded upward to form an outward folding edge 11, the upper end of the inner side panel 2 is folded upward to form an inward folding edge 21, and the outward folding edge 11 and the inward folding edge 21 are fixedly connected by structural adhesive 5.

[0025] In this embodiment, an inclined surface 41 inclined outward is provided at the upper end inside the metal profile 4, so that the connecting plate 3 is arranged in a Z shape. The outer end of the connecting plate 3 is bent downward to form a downward bending portion 31. The downward bending portion 31 and the outer side of the metal profile 4 are fixedly connected by structural adhesive 5. The lower end of the outer side panel 1 and the downward bending portion 31 are fixedly connected by structural adhesive 5, which can avoid the relative displacement of the connecting plate 3 and the metal profile 4 in the horizontal direction, thereby improving the connection stability between the connecting plate 3 and the metal profile 4.

[0026] Further, in order to improve the connection stability between the inner side panel 2 and the connecting plate 3, the lower end of the inner side panel 2 is bent inward to form an inner bending edge 22. The upper surface of the inner bending edge 22 is used for connecting with the floor 7, and the lower surface of the inner bending edge 22 and the upper surface of the connecting plate 3 are fixedly connected by structural adhesive 5.

[0027] The metal profile 4 includes an upper profile 42 and a lower profile 43. The upper surface of the upper profile 42 is adapted to and fixedly connected with the lower surface of the connecting plate 3. The lower surface of the upper profile 42 is flat. The upper surface of the lower profile 43 is flat. The upper surface of the lower profile 43 is adapted to and fixedly connected with the lower surface of the upper profile 42 by structural adhesive 5. In order to improve the connection stability between the upper profile 42 and the lower profile 43, the bottom of the upper profile 42 extends outward and inward with upper flanges 421, and the top of the lower profile 43 extends outward and inward with lower flanges 431 opposite to the upper flanges 421. A positioning hole 422 is provided through the upper flange 421, and a mating hole 432 is provided through the position of the lower flange 431 corresponding to the positioning hole 422. The positioning hole 422 and the mating hole 432 are used to cooperate with fasteners to fixedly connect the upper profile 42 and the lower profile 43.

[0028] During assembly, first connect the carbon fiber outer side panel 1, inner side panel 2 and connecting plate 3 with structural adhesive 5, then connect the upper profile 42 and the lower surface of the connecting plate 3 with structural adhesive 5, the thickness of the structural adhesive 5 can be adjusted, then connect the upper profile 42 and the lower profile 43 with structural adhesive 5, and finally use fasteners to strengthen the connection between the upper profile 42 and the lower profile 43, which is convenient for assembly. When connecting and assembling the upper and lower vehicle bodies, only fasteners are used for connection. The fasteners can be rivets or bolts, saving the gluing process and assembly time.

[0029] To facilitate the installation of fasteners, avoidance holes 8 are provided at positions corresponding to the positioning holes 422 on the connecting plate 3 and the inner side panel 2.

[0030] In this embodiment, the metal profile 4 has a cavity structure, and a plurality of reinforcing ribs 44 are provided in the cavity of the metal profile 4. The plurality of reinforcing ribs 44 divide the inner cavity of the metal profile 4 into a plurality of small cavities, forming a grid-like box structure conducive to energy absorption. Moreover, the arrangement of the reinforcing ribs 44 also increases the strength of the metal profile 4, enabling the metal profile 4 to form a frame structure with a grid-like cavity, and the anti-collision performance is more prominent and excellent.

[0031] In this article, the front, rear, upper, lower and other orientation terms are defined based on the positions of the components in the drawings and the positions of the components relative to each other, only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the orientation terms should not limit the scope of protection claimed in this application.

[0032] Without conflict, the above embodiments and the features in the embodiments in this article can be combined with each other.

[0033] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A body sill beam structure, characterized in that, It includes an outer side panel, an inner side panel, a connecting plate, and a metal profile; The bottom of the connecting plate is adapted to the top of the metal profile and is fixedly connected by structural adhesive. The thickness of the structural adhesive between the connecting plate and the metal profile is not less than 3 mm. The outer side panel is bent, and the lower end is fixedly connected to the outer end of the connecting plate. The inner side panel is bent, and the lower end is fixedly connected to the inner end of the connecting plate. The upper end of the outer side panel is fixedly connected to the upper end of the inner side panel, so that the outer side panel, the inner side panel, and the connecting plate form a sealed cavity in cross-section. The materials of the outer side panel, the inner side panel, and the connecting plate are carbon fiber composite materials; The upper end of the outer side panel is turned up to form an outer turned edge, and the upper end of the inner side panel is turned up to form an inner turned edge. The outer turned edge and the inner turned edge are fixedly connected by structural adhesive; An inclined surface inclined outward is provided at the upper end inside the metal profile, so that the connecting plate is arranged in a Z shape; The outer end of the connecting plate is bent downward to form a downward bent portion. The downward bent portion is fixedly connected to the outer side of the metal profile by structural adhesive, and the lower end of the outer side panel is fixedly connected to the downward bent portion by structural adhesive; The lower end of the inner side panel is bent inward to form an inner bent edge. The upper surface of the inner bent edge is used for connecting to the floor, and the lower surface of the inner bent edge is fixedly connected to the upper surface of the connecting plate by structural adhesive; The metal profile includes an upper profile and a lower profile. The upper surface of the upper profile is adapted to and fixedly connected to the lower surface of the connecting plate. The lower surface of the upper profile is flat. The upper surface of the lower profile is flat. The upper surface of the lower profile is adapted to and fixedly connected to the lower surface of the upper profile by structural adhesive; Upper flanges extend outward and inward from the bottom of the upper profile, and lower flanges opposite to the upper flanges extend outward and inward from the top of the lower profile. Positioning holes are provided through the upper flanges, and mating holes corresponding to the positioning holes are provided through the lower flanges. The positioning holes and the mating holes are used to cooperate with fasteners to fixedly connect the upper profile and the lower profile.

2. The body sill beam structure according to claim 1, characterized in that, Avoidance holes are provided at the positions corresponding to the positioning holes on the connecting plate and the inner side panel.

3. The body sill beam structure according to claim 1, wherein, The metal profile is a cavity structure, and a plurality of reinforcing ribs are provided in the cavity of the metal profile. The plurality of reinforcing ribs divide the inner cavity of the metal profile into a plurality of small cavities.

4. A hydrogen energy vehicle, characterized in that, It includes the vehicle body sill beam structure according to any one of claims 1-3.

Images