A sill beam structure, a door panel assembly, and a vehicle

Abstract

The present disclosure relates to a sill beam structure, a door panel assembly, and a vehicle. The sill beam structure includes a door frame, a cross beam, and a buffer assembly. An installation cavity for installing the cross beam is provided at the lower end of the door frame. On one side surface of the cross beam in its own height direction, a first connection portion and a second connection portion are provided. The first connection portion is configured to cooperate with a first fixing portion of the door frame, and the second connection portion is configured to cooperate with a second fixing portion of the door frame. The buffer assembly is installed between the first connection portion and the second connection portion. One end of the buffer assembly is connected to the cross beam, and the other end is connected to the first fixing portion and / or the second fixing portion. The buffer assembly is configured to: deform when the cross beam is subjected to an impact force and transmit the impact force to the first fixing portion and / or the second fixing portion. The sill beam structure disclosed in the present disclosure can effectively protect the safety of the battery pack.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of vehicle body structures, and particularly to a sill beam structure, a door panel assembly, and a vehicle. Background Art

[0002] The safety protection of automobiles plays a crucial role during vehicle driving and is related to the lives of drivers and passengers. There are many forms of safety protection, such as: assisted driving, distance warning, airbags, crash energy absorption boxes, etc.

[0003] For new energy vehicles, not only the lives of drivers and passengers need to be protected, but also for the vehicle's own battery pack. Since it is time-consuming, laborious, and expensive to repair and replace after being damaged, and it is also prone to safety hazards such as fire, therefore, the protection of the battery pack is also particularly important.

[0004] Currently, the commonly adopted method is to improve the strength of the components around the battery pack, such as: replacing high-strength support materials, etc. However, this method is not only costly but also has a poor protection effect on the battery pack. Summary of the Invention

[0005] Embodiments of this application provide a sill beam structure, a door panel assembly, and a vehicle, which can effectively protect the safety of the battery pack.

[0006] Embodiments of this application provide a sill beam structure. The sill beam structure includes a door frame, a cross beam, and a buffer assembly. An installation cavity for installing the cross beam is provided at the lower end of the door frame;

[0007] A first connection portion and a second connection portion are provided on one side surface of the cross beam in its own height direction. The first connection portion is configured to cooperate with a first fixing portion of the door frame, and the second connection portion is configured to cooperate with a second fixing portion of the door frame;

[0008] The buffer assembly is installed between the first connection portion and the second connection portion. One end of the buffer assembly is connected to the cross beam, and the other end is connected to the first fixing portion and / or the second fixing portion; the buffer assembly is configured to: deform when the cross beam is subjected to an impact force and transmit the impact force to the first fixing portion and / or the second fixing portion.

[0009] In an exemplary embodiment, the buffer assembly includes a buffer plate. A partial area of the buffer plate is bent and protruded towards the cross beam to form a buffer portion, and the top end of the buffer portion is connected to the cross beam;

[0010] Both side edges of the buffer plate away from the buffer portion extend and are fixed towards the first fixing portion and the second fixing portion respectively.

[0011] In an exemplary embodiment, the side wall of the buffer portion is inclined such that the bottom width of the buffer portion is greater than the top width of the buffer portion.

[0012] In an exemplary embodiment, the buffer plate is a bent and formed integral member.

[0013] In an exemplary embodiment, the buffer assembly further includes a reinforcing plate, the first end of the reinforcing plate is connected to the first fixing portion, and the second end of the reinforcing plate is connected to the buffer plate.

[0014] In an exemplary embodiment, the buffer assembly further includes a connecting plate, one end of the connecting plate is fixed on the buffer plate, and the other end of the connecting plate extends along the height direction of the buffer plate and forms an installation gap with the buffer plate;

[0015] The second end of the reinforcing plate extends into the installation gap and is fixed to the buffer plate and the connecting plate.

[0016] In an exemplary embodiment, the cross beam is provided with a recessed area, and the buffer portion extends into the recessed area and abuts against the bottom wall of the recessed area.

[0017] In an exemplary embodiment, the door frame includes a connected outer plate assembly and an inner plate assembly, and the outer plate assembly and the inner plate assembly enclose to form the installation cavity.

[0018] In an exemplary embodiment, the buffer plate is connected to the cross beam by screws, and / or the buffer plate is connected to the inner plate assembly by welding, and / or the buffer plate is connected to the second fixing portion by bolts.

[0019] In an exemplary embodiment, the cross beam is made of aluminum alloy.

[0020] In an exemplary embodiment, the cross beam is a strip-shaped member and is provided with a hollow channel, and reinforcing ribs are arranged in a staggered manner in the hollow channel.

[0021] The embodiment of the present application further provides a door panel assembly, and the door panel assembly includes the foregoing sill beam structure.

[0022] The embodiment of the present application further provides a vehicle, and the vehicle includes a battery pack and the foregoing door panel assembly, and the battery pack is located on a side of the buffer assembly away from the cross beam.

[0023] Compared with some technologies, the present application has the following beneficial effects:

[0024] The threshold beam structure provided by the embodiment of the present application is provided with a buffer assembly at the cross beam. The buffer assembly deforms to absorb the impact force and transmits the remaining impact force to other surrounding fixed points, avoiding the transmission of the impact force to the battery pack, protecting the safety of the battery pack, and avoiding the problem that the battery pack is easily damaged in a minor collision of the vehicle, thereby resulting in too high vehicle repair costs. In addition, the threshold beam structure provided by the embodiment of the present application improves the protection of the battery pack through the optimization of the structural layout, reducing the manufacturing cost.

[0025] The door panel assembly provided by the embodiment of the present application has the aforementioned threshold beam structure, has good anti-collision performance, and can play a good role in protecting the battery pack.

[0026] The vehicle provided by the embodiment of the present application has the aforementioned door panel assembly, has a good protection effect on the battery pack, and has a low manufacturing cost, and can effectively avoid the situation that the battery pack is damaged in a minor collision of the vehicle, thereby generating high repair costs.

[0027] Other features and advantages of the present application will be described in the subsequent specification. Brief Description of the Drawings

[0028] The drawings are used to provide a further understanding of the technical solution of the present application, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application, and do not constitute a limitation to the technical solution of the present application.

[0029] Figure 1 It is a schematic diagram of the threshold beam structure described in the embodiment of the present application;

[0030] Figure 2 It is a schematic diagram of the structure of the buffer plate described in the embodiment of the present application;

[0031] Figure 3 It is Figure 2 an enlarged view of the structure of part A in

[0032] Figure 4 It is a schematic diagram of the structure of the reinforcing plate described in the embodiment of the present application.

[0033] Illustration:

[0034] 1 - Outer panel assembly, 2 - Inner panel assembly, 3 - Cross beam, 31 - First connection part, 32 - Second connection part, 33 - Concave area, 34 - Reinforcing rib, 4 - Buffer assembly, 41 - Buffer plate, 411 - Buffer part, 42 - Reinforcing plate, 43 - Connection plate, 431 - Installation gap, 51 - First fixing part, 52 - Second fixing part, 6 - Battery pack. Detailed Description of the Embodiment

[0035] To make the objectives, technical solutions, and advantages of this application more clear and understandable, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined arbitrarily with each other.

[0036] An embodiment of this application provides a sill beam structure, as Figures 1 to 4 shown. The sill beam structure includes a door frame, a cross beam 3, and a buffer assembly 4. An installation cavity for installing the cross beam 3 is provided at the lower end of the door frame; on one side surface of the cross beam 3 in its own height direction, a first connection portion 31 and a second connection portion 32 are provided. The first connection portion 31 is configured to cooperate with a first fixing portion 51 of the door frame, and the second connection portion 32 is configured to cooperate with a second fixing portion 52 of the door frame; a buffer assembly 4 is installed between the first connection portion 31 and the second connection portion 32. One end of the buffer assembly 4 is connected to the cross beam 3, and the other end is connected to the first fixing portion 51 and / or the second fixing portion 52; the buffer assembly 4 is configured to: deform when the cross beam 3 is subjected to an impact force and transmit the impact force to the first fixing portion 51 and / or the second fixing portion 52.

[0037] An installation cavity with an opening facing downward is provided at the lower end of the door frame, and the cross beam 3 is fixed in the installation cavity to improve the strength of the lower end of the door frame.

[0038] In the height direction of the cross beam 3 itself (i.e., the height direction of the vehicle body, as Figure 1 shown in the A direction in the figure), a first connection portion 31 and a second connection portion 32 are provided. A first fixing portion 51 and a second fixing portion 52 are provided on the door frame. The first connection portion 31 and the first fixing portion 51 are in hard contact, that is, a large impact force can be borne here without deformation or only a slight deformation. The second connection portion 32 and the second fixing portion 52 are also in hard contact.

[0039] The first fixing portion 51 can be a floor, and the second fixing portion 52 can be a fender.

[0040] The cross beam 3 is simultaneously connected to the first fixing portion 51, the buffer assembly 4, and the second fixing portion 52. When the vehicle collides, the cross beam 3 is deformed by the impact force and squeezed. The first fixing portion 51 and the second fixing portion 52 will not deform after bearing the extrusion of the cross beam 3. The buffer assembly 4 will deform after being squeezed by the cross beam 3 and absorb a part of the impact force, and disperse the remaining impact force to the first fixing portion 51 and the second fixing portion 52, avoiding the impact force of the cross beam 3 acting directly on the battery pack 6 (that is, avoiding the cross beam 3 directly squeezing the battery pack 6), thereby achieving the effect of protecting the battery pack 6.

[0041] The sill beam structure provided by the embodiment of the present application changes the original impact force transmission path. The impact force originally directly transmitted from the cross beam 3 to the battery pack 6 is dispersed by the buffer assembly 4, so that this part of the impact force is respectively transmitted to the first fixing part 51 and the second fixing part 52 through the buffer assembly 4 and absorbed, thereby ensuring the integrity of the battery pack 6.

[0042] The sill beam structure provided by the embodiment of the present application can more effectively protect the driver and passengers and the battery pack 6 during a vehicle collision. By arranging the buffer assembly 4 at the cross beam 3, the buffer assembly 4 deforms to absorb the impact force and transmits the remaining impact force to other surrounding fixed points, avoiding the impact force being transmitted to the battery pack 6, protecting the safety of the battery pack 6, and avoiding the problem that the battery pack 6 is easily damaged even in a minor collision of the vehicle, which in turn leads to too high vehicle repair costs. In addition, the sill beam structure provided by the embodiment of the present application optimizes the structural layout to improve the protection of the battery pack 6, reducing the weight and manufacturing cost of the vehicle body.

[0043] In an exemplary embodiment, as Figures 1 to 3 shown, the buffer assembly 4 includes a buffer plate 41. A partial area of the buffer plate 41 bends and protrudes towards the cross beam 3 to form a buffer part 411. The top end of the buffer part 411 is connected to the cross beam 3; both sides of the buffer plate 41 away from the buffer part 411 extend towards the first fixing part 51 and the second fixing part 52 respectively and are fixed.

[0044] A partial area on the buffer plate 41 bends and protrudes towards the cross beam 3 to form a buffer part 411. The top end of the buffer part 411 abuts against the cross beam 3. When the cross beam 3 is squeezed and deformed, the impact force will be transmitted to the entire buffer plate 41 through the buffer part 411.

[0045] The bent and protruding buffer part 411 can absorb a certain amount of impact force. Moreover, both ends (i.e., both sides) of the buffer plate 41 extend to the first fixing part 51 and the second fixing part 52 respectively and are fixed, so that the buffer plate 41 disperses the impact force to the first fixing part 51 and the second fixing part 52.

[0046] A plurality of buffer parts 411 can be arranged on the buffer plate 41 along the vehicle body height direction, that is, the top ends of the plurality of buffer parts 411 all abut against the cross beam 3. The plurality of buffer parts 411 deform together and disperse the impact force to the first fixing part 51 and the second fixing plate. Arranging a plurality of buffer parts 411 can effectively improve the impact force absorption ability of the buffer assembly 4 and improve the protection effect on the battery pack 6. In practical applications, the specific number of the buffer parts 411 arranged can be adjusted according to actual situations, and the present application does not limit this.

[0047] It should be understood that for the specific fixing positions at both ends of the buffer plate 41, the two ends of the buffer plate 41 can be directly fixedly connected (e.g., welded) to the first fixing portion 51 and the second fixing portion 52, or one end of the buffer plate 41 can be indirectly connected to the first fixing portion 51 or the second fixing portion 52 through other components (e.g., one end of the buffer plate 41 is connected to the first fixing portion 51 through a reinforcing plate 42).

[0048] In an exemplary embodiment, as Figures 1 to 3 shown, the side wall of the buffer portion 411 is inclined, so that the bottom width of the buffer portion 411 is greater than the top width of the buffer portion 411.

[0049] The shape of the buffer portion 411 can be trapezoidal to improve the deformation ability of the buffer portion 411, absorb more impact force, and at the same time ensure that the buffer portion 411 will not be directly crushed while deforming, and can still transmit the impact force to the first fixing portion 51 and the second fixing portion 52.

[0050] It should be understood that the buffer portion 411 can also be other shapes. For example, the buffer portion 411 can be arc-shaped, and the top of the arc abuts against the cross beam 3. The present application does not limit this.

[0051] In an exemplary embodiment, as Figures 1 to 3 shown, the buffer plate 41 is a bent and formed integral component.

[0052] The buffer plate 41 is an integral structure as a whole to improve the connection reliability and avoid situations such as easy fracture during the deformation process.

[0053] The buffer plate 41 can be formed by die casting or other methods.

[0054] In an exemplary embodiment, as Figure 1 and Figure 4 shown, the buffer assembly 4 further includes a reinforcing plate 42. The first end of the reinforcing plate 42 is connected to the first fixing portion 51, and the second end of the reinforcing plate 42 is connected to the buffer plate 41.

[0055] Setting the reinforcing plate 42 can improve the connection reliability between the buffer plate 41 and the first fixing portion 51. By setting the reinforcing plate 42 for intermediate connection, the assembly difficulty at this connection position is reduced.

[0056] In an exemplary embodiment, as Figures 1 to 3 shown, the buffer assembly 4 further includes a connecting plate 43. One end of the connecting plate 43 is fixed on the buffer plate 41, and the other end of the connecting plate 43 extends along the height direction of the buffer plate 41 and forms an installation gap 431 with the buffer plate 41; the second end of the reinforcing plate 42 extends into the installation gap 431 and is fixed to the buffer plate 41 and the connecting plate 43.

[0057] A plurality of connecting plates 43 can be arranged along the length direction of the buffer plate 41.

[0058] An installation gap 431 is formed between the connecting plate 43 and the buffer plate 41. After the second end of the reinforcing plate 42 is inserted into the installation gap 431, welding fixation is then carried out.

[0059] During the assembly process, one end of the connecting plate 43 can be fixed to the buffer plate 41 in advance. After the buffer plate 41 is installed in place, the second end of the reinforcing plate 42 is extended into the installation gap 431. After the second end of the reinforcing plate 42 extends into the installation gap 431, the connecting plate 43 itself can support the reinforcing plate 42, reducing the support requirements for the reinforcing plate 42 during subsequent welding fixation and facilitating the operator to carry out welding fixation.

[0060] In addition to the above form of "reinforcing plate 42 + connecting plate 43", the buffer assembly 4 can also be set in other forms. For example, the buffer assembly 4 can further include a support plate (not shown in the figure). The two ends of the support plate extend and are fixed towards the first fixing portion 51 and the second fixing portion 52 respectively. The support plate is also set to be connected to the buffer plate 41 and at least partially cover the concave cavity area formed by the buffer portion 411 on the buffer plate 41. One end of the buffer plate 41 is connected to the first fixing portion 51 through the support plate. The other end of the support plate extends towards the second fixing portion 52. The other end of the support plate can be directly fixed to the second fixing portion 52 or indirectly connected to the second fixing portion 52. For example, the other end of the support plate is fixed to the buffer plate 41, and the buffer plate 41 is connected to the second fixing portion 52. The support plate covers the concave cavity area formed by the buffer portion 411 on the buffer plate 41, ensuring that the buffer portion 411 stretches towards the first fixing portion 51 and the second fixing plate during the deformation process, avoiding the buffer portion 411 deforming towards the battery pack 6 and avoiding the buffer portion 411 squeezing the battery pack 6 during the deformation process.

[0061] In an exemplary embodiment, as Figure 1 shown, the crossbeam 3 is provided with a recessed area 33, and the buffer portion 411 extends into the recessed area 33 and abuts against the bottom wall of the recessed area 33.

[0062] The crossbeam 3 is provided with the recessed area 33 as a space for accommodating the buffer portion 411, increasing the distance between the crossbeam 3 and the battery pack 6, and avoiding the crossbeam 3 directly squeezing the battery pack 6 after small - amplitude deformation.

[0063] Moreover, the crossbeam 3 is provided with the recessed area 33 to accommodate the buffer portion 411, so that after the buffer portion 411 is added to the sill beam structure, the overall size increases less, avoiding affecting the structural layout of the door panel assembly.

[0064] In an exemplary embodiment, as Figure 1As shown, the door frame includes a connected outer panel assembly 1 and an inner panel assembly 2, and the outer panel assembly 1 and the inner panel assembly 2 enclose to form an installation cavity.

[0065] The lower ends of the outer panel assembly 1 and the inner panel assembly 2 enclose to form an installation cavity for installing the cross beam 3.

[0066] In an exemplary embodiment, the buffer plate 41 and the cross beam 3 are connected by screws, and / or the buffer plate 41 and the inner panel assembly 2 are connected by welding, and / or the buffer plate 41 and the second fixing part 52 are connected by bolts.

[0067] The buffer plate 41 and the cross beam 3 are connected by screws (such as external plum blossom head screws), which is convenient and flexible for assembly and avoids the problem of difficult welding between different materials. The buffer plate 41 and the inner panel assembly 2 are connected by welding to improve the connection reliability. The buffer plate 41 and the second fixing part 52 are connected by bolts, which is convenient for assembly.

[0068] The reinforcing plate 42 and the first fixing part 51 can be connected by welding. The reinforcing plate 42 and the buffer plate 41 can be connected by welding. The cross beam 3 and the outer panel assembly 1 can be connected by screws (such as external plum blossom head screws).

[0069] In an exemplary embodiment, the cross beam 3 is made of aluminum alloy.

[0070] The cross beam 3 is made of aluminum alloy, which is light in weight and high in strength, has good anti-collision performance and good energy absorption effect.

[0071] Of course, the cross beam 3 can also be made of other materials according to actual needs, and the present application does not limit this.

[0072] In an exemplary embodiment, as Figure 1 shown, the cross beam 3 is a strip-shaped member and is provided with a hollow channel, and reinforcing ribs 34 are arranged in a staggered manner in the hollow channel.

[0073] The threshold beam is provided with a hollow channel, and reinforcing ribs 34 are arranged in a staggered manner in the hollow channel. In other words, the threshold beam improves its own strength with a honeycomb-like structure to meet the strength requirements. After removing many reinforcing members around the threshold beam, the assembly process of the threshold beam is also greatly simplified. At the same time, the versatility of the threshold beam is well improved.

[0074] In the threshold beam structure provided by the embodiment of the present application, during a vehicle collision, about 50% of the impact force is borne at the first fixing part 51, about 30% of the impact force is borne at the second fixing part 52, and the buffer assembly 4 only bears about 20% of the impact force after being compressed and deformed, greatly reducing the impact force transmitted to the battery pack 6 and effectively protecting the integrity of the battery pack 6.

[0075] The embodiment of the present application further provides a door panel assembly, and the door panel assembly includes the foregoing sill beam structure.

[0076] The door panel assembly provided by the embodiment of the present application has the foregoing sill beam structure, has good anti-collision performance, and can play a good role in protecting the battery pack 6.

[0077] The embodiment of the present application further provides a vehicle, and the vehicle includes a battery pack 6 and the foregoing door panel assembly, and the battery pack 6 is located on the side of the buffer assembly 4 away from the cross beam 3.

[0078] The vehicle provided by the embodiment of the present application has the foregoing door panel assembly, has a good protection effect on the battery pack, and has a low manufacturing cost, and can effectively avoid the situation that the battery pack is damaged in a minor collision of the vehicle, thereby generating high repair costs.

[0079] In the description of the present application, it should be noted that the orientation or positional relationship indicated by "upper", "lower", "one end", "one side", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0080] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connection", "assembly", and "installation" shall be understood in a broad sense. For example, the term "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood in specific situations.

[0081] The embodiments described in the present application are exemplary rather than restrictive, and it is obvious to those of ordinary skill in the art that there can be more embodiments and implementation solutions within the scope of the embodiments described in the present application. Although many possible feature combinations are shown in the drawings and discussed in the detailed implementation, many other combination ways of the disclosed features are also possible. Unless specifically restricted, any feature or element of any embodiment can be combined with any other feature or element in any other embodiment, or can replace any other feature or element in any other embodiment.

[0082] This application includes and contemplates combinations with features and elements known to those of ordinary skill in the art. The embodiments, features, and elements disclosed in this application can also be combined with any conventional features or elements to form unique technical solutions defined by the claims. Any feature or element of any embodiment can also be combined with features or elements from other technical solutions to form another unique technical solution defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in this application can be implemented alone or in any suitable combination. Thus, the embodiments are not subject to other limitations except those imposed by the appended claims and their equivalents. In addition, various modifications and changes can be made within the scope of protection of the appended claims.

Claims

1. A sill beam structure, characterized in that, It comprises a door frame, a crossbeam and a buffer assembly, wherein the lower end of the door frame is provided with an installation cavity for installing the crossbeam; The crossbeam is provided with a first connecting portion and a second connecting portion on one side surface in the height direction thereof, wherein the first connecting portion is configured to cooperate with the first fixing portion of the door frame, and the second connecting portion is configured to cooperate with the second fixing portion of the door frame; The buffer assembly is installed between the first connecting portion and the second connecting portion, one end of the buffer assembly is connected to the cross beam, and the other end is connected to the first fixing portion and / or the second fixing portion; the buffer assembly is configured to deform when the cross beam is subjected to an impact force and transmit the impact force to the first fixing portion and / or the second fixing portion; The buffer assembly includes a buffer plate, a portion of the buffer plate is bent and protruded toward the cross beam to form a buffer portion, and a top end of the buffer portion is connected to the cross beam; Two side edges of the buffer plate away from the buffer portion extend toward and are fixed to the first fixing portion and the second fixing portion respectively; The buffer assembly further includes a reinforcing plate, a first end of the reinforcing plate is connected to the first fixing portion, and a second end of the reinforcing plate is connected to the buffer plate; The buffer assembly further includes a connecting plate, one end of which is fixed to the buffer plate, and the other end of which extends along the height direction of the buffer plate and forms an installation gap with the buffer plate; The second end of the reinforcing plate extends into the installation gap and is fixed to the buffer plate and the connecting plate.

2. The threshold beam structure according to claim 1, characterized in that, The side wall of the buffer portion is arranged to be inclined so that the bottom width of the buffer portion is greater than the top width of the buffer portion.

3. The sill beam structure according to claim 1, wherein, The buffer plate is an integrated component formed by bending.

4. The sill beam structure according to claim 1, characterized in that The crossbeam is provided with a recessed area, and the buffer portion extends into the recessed area and abuts against the bottom wall of the recessed area.

5. The sill beam structure according to any one of claims 1 to 4, characterized in that, The door frame comprises an outer panel assembly and an inner panel assembly which are connected to each other, and the outer panel assembly and the inner panel assembly are arranged to form the installation cavity.

6. The sill beam structure according to claim 5, wherein The buffer plate is connected to the crossbeam by screws, and / or, The buffer plate is connected to the inner plate assembly by welding, and / or, The buffer plate is connected to the second fixing portion by bolts.

7. The sill beam structure according to any one of claims 1 to 4, characterized in that, The crossbeam is made of aluminum alloy.

8. The threshold beam structure according to any one of claims 1 to 4, characterized in that, The cross beam is a strip-shaped member and is provided with a hollow channel, wherein the hollow channel is provided with reinforcing ribs arranged in a staggered manner.

9. A door panel assembly, characterized in that, The invention comprises a sill beam structure as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that, It comprises a battery pack and the door panel assembly as claimed in claim 9, wherein the battery pack is located on a side of the buffer assembly facing away from the crossbeam.

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