Threshold beam assembly and vehicle

Abstract

The utility model discloses a doorsill beam assembly and vehicle, the doorsill beam assembly includes: side wall, doorsill beam and doorsill reinforcing plate, side wall and doorsill reinforcing plate are fixedly connected and define the semi-open installation space together, doorsill beam is clamped between side wall and doorsill reinforcing plate, and the part of doorsill beam is located outside the installation space. Therefore, part of the threshold beam is arranged externally, limitation on the cross sectional area of the threshold beam can be reduced, the cross sectional area of the threshold beam can be increased as much as possible under the limited space condition, therefore, the side collision performance of the threshold beam is improved, deformation of the threshold beam during side face collision is reduced, the risk that a battery is extruded to be on fire is reduced, and then the safety of the electric automobile is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of door sill beams, in particular to a door sill beam component and a vehicle. Background Art

[0002] With the rapid development of electric vehicles, the public has higher requirements for the collision safety of electric vehicles. The car threshold beam is an important structure to ensure the safety of the car side collision. In the related technology, the existing car threshold beam is very easy to deform when it is hit by the side, which causes the battery pack to be squeezed and catch fire, greatly reducing the safety of electric vehicles. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the first purpose of the utility model is to propose a threshold beam assembly, in which the side panels and the threshold reinforcement plate are fixedly connected and jointly define a semi-open installation space, the threshold beam is sandwiched between the side panels and the threshold reinforcement plate, and part of the threshold beam is located outside the installation space, thereby making part of the threshold beam external, which can reduce the restriction on the cross-sectional area of the threshold beam, and can maximize the cross-sectional area of the threshold beam under limited space conditions, thereby improving the side impact performance of the threshold beam, which is beneficial to reduce the deformation of the threshold beam during side collision, reduce the risk of battery extrusion and fire, and thus improve the safety of electric vehicles.

[0004] The second objective of the present invention is to provide a vehicle.

[0005] To achieve the above-mentioned purpose, a first embodiment of the utility model proposes a threshold beam assembly, characterized in that it includes: a side panel, a threshold beam and a threshold reinforcement plate, the side panel and the threshold reinforcement plate are fixedly connected and jointly define a semi-open installation space, the threshold beam is clamped between the side panel and the threshold reinforcement plate, and part of the threshold beam is located outside the installation space.

[0006] According to the threshold beam assembly of the embodiment of the utility model, the side panels and the threshold reinforcement plate in the threshold beam assembly are fixedly connected and jointly define a semi-open installation space, the threshold beam is clamped between the side panels and the threshold reinforcement plate, and part of the threshold beam is located outside the installation space, thereby making part of the threshold beam externally located, which can reduce restrictions on the cross-sectional area of the threshold beam, and can maximize the cross-sectional area of the threshold beam under limited space conditions, thereby improving the side impact performance of the threshold beam, which is beneficial to reducing deformation of the threshold beam during side collisions, reducing the risk of battery extrusion and fire, and thereby improving the safety of electric vehicles.

[0007] According to some examples of the present utility model, the sill beam assembly further includes: a floor panel and a seat cross member. The floor panel is disposed on a side of the sill reinforcement away from the sill beam and is fixedly connected to an upper portion of the sill reinforcement. The seat cross member is fixedly connected to both the floor panel and the sill reinforcement.

[0008] According to some examples of the present utility model, the seat cross member includes: a first connection section, a second connection section, and a third connection section that are sequentially connected. The first connection section is fixedly connected to the sill reinforcement, the second connection section is fixedly connected to a connection flange of the floor panel, and the third connection section is fixedly connected to a panel body of the floor panel.

[0009] According to some examples of the present utility model, the interior of the sill beam is a cavity structure, and reinforcing ribs for subdividing the cavity structure are provided in the cavity structure.

[0010] According to some examples of the present utility model, a plurality of reinforcing ribs are inclined to form a continuous force transmission channel, so that the force transmission channel transmits force to the seat cross member.

[0011] According to some examples of the present utility model, an upper inclined surface of the sill beam has an included angle α with the horizontal plane, satisfying the relation: α ≤ 30°.

[0012] According to some examples of the present utility model, the sill beam has a protruding portion, the protruding portion is located below the side panel, and the protruding portion extends in a direction away from the outer side of the side panel.

[0013] According to some examples of the present utility model, the side panel includes: a side panel outer plate and a side panel reinforcement. The side panel outer plate is fixedly provided on the outer side of the side panel reinforcement, and the inner side of the side panel reinforcement is fixedly connected to the sill beam.

[0014] According to some examples of the present utility model, the sill beam assembly further includes: a sill trim. The protruding portion has a first mounting portion, and a second mounting portion is provided at a fixed connection between the sill beam and the side panel reinforcement. The sill trim is fixedly connected to the sill beam through the first mounting portion and the second mounting portion.

[0015] To achieve the above object, a second aspect embodiment of the present utility model provides a vehicle, including the sill beam assembly in the first aspect embodiment.

[0016] According to the vehicle of the embodiment of the present utility model, by providing the above-mentioned sill beam assembly, the side wall and the sill reinforcement plate in the sill beam assembly are fixedly connected and jointly define a semi-open installation space. The sill beam is clamped between the side wall and the sill reinforcement plate, and a part of the sill beam is located outside the installation space. Thus, making a part of the sill beam external can reduce the limitation on the cross-sectional area of the sill beam, and can improve the cross-sectional area of the sill beam as much as possible under limited space conditions, thereby improving the side impact performance of the sill beam, being beneficial to reducing the deformation of the sill beam during side collision, reducing the risk of battery extrusion and ignition, and further improving the safety of the electric vehicle.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Brief Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 Schematic diagram of a sill beam assembly according to an embodiment of the present utility model;

[0020] Figure 2 Partial cross-sectional schematic diagram of a sill beam assembly according to an embodiment of the present utility model;

[0021] Figure 3 Partial cross-sectional schematic diagram of a sill beam assembly according to another embodiment of the present utility model.

[0022] Reference Signs:

[0023] Sill beam assembly 100;

[0024] Side wall 1; Outer side wall panel 11; Side wall reinforcement plate 12;

[0025] Sill beam 2; Reinforcing rib 21; First force transmission channel 22; Second force transmission channel 23; Upper inclined surface 24; Protruding portion 25; First mounting portion 251; Second mounting portion 26;

[0026] Sill reinforcement plate 3;

[0027] Floor panel 4; Connecting flange 41; Panel body 42;

[0028] Seat crossbeam 5; First connecting section 51; Second connecting section 52; Third connecting section 53;

[0029] Sill trim 6. Detailed Description of the Embodiments

[0030] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0031] It should be noted that the sill beam, as an important structure to ensure the side collision safety of the vehicle, is usually arranged below the vehicle door. The lower ends of the existing side wall and the sill reinforcement plate are respectively fixedly connected through their respective lower rabbets, so that the side wall and the sill reinforcement plate jointly define a closed installation cavity. The sill beam is arranged in the installation cavity. The sill beam is restricted by the space in the installation cavity, and it is not easy to set the cross-sectional area of the sill beam too large. As a result, the sill beam is extremely prone to deformation when subjected to a side impact. For electric vehicles, the deformation of the sill beam is likely to cause the battery pack to be squeezed and catch fire, thus greatly reducing the safety performance of the electric vehicle.

[0032] Based on this, the present application proposes a sill beam assembly 100. The side wall 1 and the sill reinforcement plate 3 in the sill beam assembly 100 are fixedly connected and jointly define a semi-open installation space. The sill beam 2 is clamped between the side wall 1 and the sill reinforcement plate 3, and a part of the sill beam 2 is located outside the installation space. Thus, a part of the sill beam 2 is externally placed, which can reduce the restriction on the cross-sectional area of the sill beam 2, and can maximize the cross-sectional area of the sill beam 2 under limited space conditions, thereby improving the side impact performance of the sill beam 2, effectively reducing the deformation of the sill beam 2 during a side collision, reducing the risk of battery extrusion and fire, and further improving the safety of electric vehicles.

[0033] The following describes the sill beam assembly 100 and the vehicle according to the embodiments of the present utility model with reference to the accompanying drawings.

[0034] As Figures 1-3 shown, the sill beam assembly 100 according to the first aspect embodiment of the present utility model includes: a side wall 1, a sill beam 2, and a sill reinforcement plate 3. The side wall 1 and the sill reinforcement plate 3 are fixedly connected and jointly define a semi-open installation space. The sill beam 2 is clamped between the side wall 1 and the sill reinforcement plate 3, and a part of the sill beam 2 is located outside the installation space.

[0035] Specifically, as Figure 2 and Figure 3As shown, the side panel 1 is fixedly connected to the threshold reinforcement plate 3, and the connection methods include but are not limited to bolt connection, riveting, etc. The free end of the side panel 1 and the free end of the threshold reinforcement plate 3 are arranged opposite to each other and spaced apart. Optionally, the free end of the side panel 1 and the free end of the threshold reinforcement plate 3 both extend downward, so that the side panel 1 and the threshold reinforcement plate 3 can jointly define a semi-open installation space. It should be noted that the free end of the side panel 1 and the free end of the threshold reinforcement plate 3 can also extend in different directions as long as they can define a semi-open installation space, and no specific limitation is made here.

[0036] Further, according to the partial cross-sectional view of the threshold beam assembly 100 Figure 2 Taking the placement direction shown as an example, the threshold beam 2 is sandwiched between the side panel 1 and the threshold reinforcement plate 3, wherein the left side of the threshold beam 2 is fixedly connected to the side panel 1, and the right side of the threshold beam 2 is fixedly connected to the threshold reinforcement plate 3, and part of the threshold beam 2 is located outside the installation space, that is, the semi-open installation space defined by the side panel 1 and the threshold reinforcement plate 3 semi-surrounds the threshold beam 2, so that a part of the threshold beam 2 is directly exposed outside the installation space, thereby reducing the restriction of the side panel 1 and the threshold reinforcement plate 3 on the installation space of the threshold beam 2. When designing the structure of the threshold beam 2, the cross-sectional area of the threshold beam 2 can be increased as much as possible under limited space conditions, which is conducive to improving the energy absorption performance of the threshold beam 2. As mentioned above, the threshold beam 2 is directly connected to the side panel 1. When the car has a side collision, the collision force can be transmitted to the threshold beam 2 through the side panel 1 at the first time, and the energy absorption performance is improved due to the increase in the cross-sectional area of the threshold beam 2. The threshold beam 2 can absorb a large amount of impact force during the collision, which is conducive to reducing the deformation of the threshold beam 2 during the side collision, thereby reducing the risk of battery extrusion and fire, and is conducive to improving the safety of the electric vehicle.

[0037] According to the threshold beam assembly 100 of the embodiment of the utility model, the side panel 1 and the threshold reinforcement plate 3 in the threshold beam assembly 100 are fixedly connected and jointly define a semi-open installation space, the threshold beam 2 is sandwiched between the side panel 1 and the threshold reinforcement plate 3, and part of the threshold beam 2 is located outside the installation space. Therefore, part of the threshold beam 2 is externalized, which can reduce the restriction on the cross-sectional area of the threshold beam 2, and can maximize the cross-sectional area of the threshold beam 2 under limited space conditions, thereby improving the side impact performance of the threshold beam 2, which is beneficial to reduce the deformation of the threshold beam 2 during side collision, reduce the risk of battery extrusion and fire, and thus improve the safety of the electric vehicle.

[0038] It should be noted that since the side wall 1 and the sill reinforcement plate 3 define a semi-open installation space, which is equivalent to shortening the lower stop structures of the traditional side wall 1 and the sill reinforcement plate 3, it is beneficial to reduce the weight of the side wall 1 and the sill reinforcement plate 3, thereby minimizing the excessive weight gain of the vehicle caused by the increase in the cross-sectional area of the sill beam 2 and reducing the impact of the increase in the cross-sectional area of the sill beam 2 on the vehicle body lightweighting.

[0039] In some examples of the present utility model, such as Figure 1 and Figure 3 shown, the sill beam assembly 100 further includes: a floor panel 4 and a seat cross member 5. The floor panel 4 is disposed on a side of the sill reinforcement plate 3 away from the sill beam 2 and is fixedly connected to the upper part of the sill reinforcement plate 3. The seat cross member 5 is fixedly connected to both the floor panel 4 and the sill reinforcement plate 3.

[0040] Specifically, a sill beam 2 is provided on each of the left and right sides of the vehicle, and each sill beam 2 corresponds to a sill reinforcement plate 3. The two sill reinforcement plates 3 are oppositely arranged and spaced apart, and a floor panel 4 is fixedly connected between the two sill reinforcement plates 3. It should be noted that the battery pack is disposed below the floor panel 4.

[0041] Further, a seat cross member 5 is further provided between the two sill reinforcement plates 3. Among them, the seat cross member 5 is fixedly connected to both the floor panel 4 and the sill reinforcement plate 3, and the connection methods include but are not limited to bolt connection, spot welding, riveting, adhesive bonding, or flow drill screw connection, etc.

[0042] With such a setting, when a side collision occurs to the vehicle, the collision force can be transmitted along the sill beam 2 to the floor panel 4 and the seat cross member 5. The seat cross member 5 can play a certain role in resisting bending of the floor panel 4, avoiding large deformation of the floor panel 4, and reducing the risk of battery extrusion and fire caused by the deformation of the floor panel 4.

[0043] In some examples of the present utility model, such as Figure 3 shown, the seat cross member 5 includes: a first connection section 51, a second connection section 52, and a third connection section 53 that are sequentially connected. The first connection section 51 is fixedly connected to the sill reinforcement plate 3, the second connection section 52 is fixedly connected to the connection flange 41 of the floor panel 4, and the third connection section 53 is fixedly connected to the panel body 42 of the floor panel 4.

[0044] Specifically, taking the partial cross-sectional view of the sill beam assembly 100 in accordance with Figure 3Taking the shown placement direction as an example for illustration, the first connecting section 51 of the seat crossbeam 5 extends along the diagonally lower right direction, the second connecting section 52 is connected to the first connecting section 51 and extends along the vertically downward direction, and the third connecting section 53 is connected to the second connecting section 52 and extends along the horizontally rightward direction. Further, the floor panel 4 includes a panel body 42 extending horizontally rightward and a connecting flange 41 extending upward. Among them, one side of the connecting flange 41 is fixedly connected to the sill reinforcement plate 3. When the seat crossbeam 5 is assembled in cooperation with the floor panel 4 and the sill reinforcement plate 3, the first connecting section 51 is fixedly connected to the upper side surface of the sill reinforcement plate 3, the second connecting section 52 is fixedly connected to the side of the connecting flange 41 away from the sill reinforcement plate 3, and the third connecting section 53 is fixedly connected to the panel body 42 of the floor panel 4.

[0045] With such a setting, the seat crossbeam 5 can be connected to the floor panel 4 and the sill reinforcement plate 3 in three directions, thereby improving the resistance to deformation of the seat crossbeam 5 during a side collision, that is, it is beneficial to improve the bending resistance performance of the seat crossbeam 5, and further protects the battery pack under the floor panel 4.

[0046] In some examples of the present utility model, such as Figure 2 and Figure 3 as shown, the inside of the sill beam 2 is a cavity structure, and there is a reinforcing rib 21 in the cavity structure that subdivides the cavity structure.

[0047] Specifically, as the cross-sectional area of the sill beam 2 increases, the inside of the sill beam 2 can be divided into more small cavities by the reinforcing rib 21, thereby forming a grid-like box structure that is beneficial for energy absorption. For example, as Figure 2 shown, the cavity structure inside the sill beam 2 is divided into a nine-square grid by the reinforcing rib 21. With such a setting, during a collision, each small cavity can absorb energy. At the same time, the setting of the reinforcing rib 21 also increases the strength of the sill beam 2, making the sill beam 2 form a frame structure with a grid-like cavity, so that the anti-collision performance of the sill beam 2 is more prominent and excellent.

[0048] In some examples of the present utility model, such as Figure 2 and Figure 3 as shown, a plurality of reinforcing ribs 21 are inclined and form a continuous force transmission channel to transmit the force to the seat crossbeam 5.

[0049] Specifically, a plurality of reinforcing ribs 21 that are inclined and sequentially connected inside the sill beam 2 can form a continuous force transmission channel, and the number of force transmission channels is set according to actual needs. For example, as Figure 2As shown, a first force transmission channel 22 and a second force transmission channel 23 are formed inside the sill beam 2. Among them, both the first force transmission channel 22 and the second force transmission channel 23 are composed of three reinforcing ribs 21 that slope upwards to the right and are connected in sequence. Both the first force transmission channel 22 and the second force transmission channel 23 extend obliquely upwards to the right, so that the force transmission channels can transmit the force generated during the collision to the seat crossbeam 5. Of course, the specific extension direction of the force transmission channels is related to the specific position of the seat crossbeam 5. In this application, the seat crossbeam 5 is arranged above the right of the sill beam 2. Therefore, both the first force transmission channel 22 and the second force transmission channel 23 extend obliquely upwards to the right. If the seat crossbeam 5 is arranged in the middle position of the sill beam 2, the force transmission channels can also extend horizontally. With such an arrangement, the force generated during the collision can be dispersed and transmitted to the seat crossbeam 5 through multiple force transmission channels, which is beneficial to reducing the deformation degree of the seat crossbeam 5, and thus beneficial to protecting the battery pack under the floor panel 4.

[0050] In some examples of the present utility model, as Figure 2 and Figure 3 shown, the upper inclined surface 24 of the sill beam 2 has an included angle α with the horizontal plane, satisfying the relationship: α ≤ 30°.

[0051] Specifically, both the upper and lower side walls of the sill beam 2 have a force transmission function. Among them, the included angle α between the upper inclined surface 24 of the sill beam 2 and the horizontal plane is less than or equal to 30°. For example, the included angle between the upper inclined surface 24 of the sill beam 2 and the horizontal plane can be 0°, 5°, 10°, 15°, 20°, 25°, 30°, which is specifically set according to actual needs. In this way, it can prevent the sill beam 2 from having poor force transmission and insufficient energy absorption due to too large an angle of the upper inclined surface 24 during a side collision, thereby weakening the energy absorption ability of the sill beam 2.

[0052] In some examples of the present utility model, as Figure 2 and Figure 3 shown, the sill beam 2 has a protruding portion 25. The protruding portion 25 is located below the side wall 1, and the protruding portion 25 extends in a direction away from the outside of the side wall 1.

[0053] Specifically, continuing to take the partial cross-sectional view of the sill beam assembly 100 as an example in the placement direction shown in Figure 2 shown, the sill beam 2 is provided with a protruding portion 25 outside the installation space. For example, when the sill beam 2 is arranged on the left side of the vehicle, as Figure 2 and Figure 3 shown, the protruding portion 25 is arranged below the side wall 1, and the protruding portion 25 protrudes to the left. It can be understood that when the left side of the vehicle is subjected to a side collision, the protruding portion 25 of the sill beam 2 directly participates in the collision energy absorption, and the protruding portion 25 is beneficial to increasing the strength of the sill beam 2, thereby further improving the anti-collision performance of the sill beam 2.

[0054] In some examples of the present utility model, such as Figure 1 and Figure 2 shown, the side wall 1 includes: an outer side wall panel 11 and a side wall reinforcement plate 12. The outer side wall panel 11 is fixedly arranged on the outer side of the side wall reinforcement plate 12, and the inner side of the side wall reinforcement plate 12 is fixedly connected to the sill beam 2. That is to say, the side wall 1 is composed of the outer side wall panel 11 and the side wall reinforcement plate 12. Among them, the outer side wall panel 11 is fixedly arranged on the outer side of the side wall reinforcement plate 12, and the inner side of the side wall reinforcement plate 12 is fixedly connected to the sill beam 2. The fixed connection methods include but are not limited to bolt connection, spot welding, riveting, adhesive bonding or flow drill screw connection, etc. With such a setting, by providing the side wall reinforcement plate 12, the overall strength of the side wall 1 can be improved, which is beneficial to further improving the overall strength of the sill beam assembly 100.

[0055] In some examples of the present utility model, such as Figure 3 shown, the sill beam assembly 100 further includes: a sill trim 6. The protruding portion 25 has a first mounting portion 251, and a second mounting portion 26 is provided at the fixed connection between the sill beam 2 and the side wall reinforcement plate 12. The sill trim 6 is fixedly connected to the sill beam 2 through the first mounting portion 251 and the second mounting portion 26.

[0056] Specifically, the protruding portion 25 of the sill beam 2 provides the first mounting portion 251 for the installation of the sill trim 6. A second mounting portion 26 is provided at the fixed connection between the sill beam 2 and the side wall reinforcement plate 12. The sill trim 6 is fixedly connected to the sill beam 2 through the first mounting portion 251 and the second mounting portion 26. The connection methods include but are not limited to snap connection, bolt connection, etc. With such a setting, by providing two mounting points, the sill trim 6 can be installed more firmly.

[0057] The vehicle according to the second aspect embodiment of the present utility model includes the sill beam assembly 100 in the first aspect embodiment.

[0058] For the vehicle according to the embodiment of the present utility model, by providing the above-mentioned sill beam assembly 100, the side wall 1 and the sill reinforcement plate 3 in the sill beam assembly 100 are fixedly connected and jointly define a semi-open installation space. The sill beam 2 is clamped between the side wall 1 and the sill reinforcement plate 3, and a part of the sill beam 2 is located outside the installation space. Thus, a part of the sill beam 2 is externalized, which can reduce the limitation on the cross-sectional area of the sill beam 2, and can improve the cross-sectional area of the sill beam 2 as much as possible under limited space conditions, thereby improving the side impact performance of the sill beam 2, being beneficial to reducing the deformation of the sill beam 2 during side collision, reducing the risk of battery extrusion and fire, and further improving the safety of the electric vehicle.

[0059] It should be noted that in the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0060] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it 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 utility model can be understood according to specific situations.

[0061] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0062] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A sill beam assembly (100), characterized in that, Comprising: A side wall (1), a sill beam (2) and a sill reinforcement plate (3), wherein the side wall (1) and the sill reinforcement plate (3) are fixedly connected and jointly define a semi-open installation space, the sill beam (2) is clamped between the side wall (1) and the sill reinforcement plate (3), and a part of the sill beam (2) is located outside the installation space.

2. The sill beam assembly (100) according to claim 1, characterized in that, The sill beam assembly (100) further comprises: a floor panel (4) and a seat cross beam (5), the floor panel (4) is arranged on a side of the sill reinforcement plate (3) away from the sill beam (2) and is fixedly connected to an upper part of the sill reinforcement plate (3), and the seat cross beam (5) is fixedly connected to both the floor panel (4) and the sill reinforcement plate (3).

3. The sill beam assembly (100) according to claim 2, wherein, The seat cross beam (5) comprises: a first connection section (51), a second connection section (52) and a third connection section (53) connected in sequence, the first connection section (51) is fixedly connected to the sill reinforcement plate (3), the second connection section (52) is fixedly connected to a connection flange (41) of the floor panel (4), and the third connection section (53) is fixedly connected to a panel body (42) of the floor panel (4).

4. The sill beam assembly (100) according to claim 2, wherein, The interior of the sill beam (2) is a cavity structure, and a reinforcing rib (21) for subdividing the cavity structure is arranged in the cavity structure.

5. The sill beam assembly (100) according to claim 4, characterized in that, A plurality of the reinforcing ribs (21) are inclined and form a continuous force transmission channel, so that the force transmission channel transmits force to the seat cross beam (5).

6. The sill beam assembly (100) according to claim 2, characterized in that, An upper inclined surface (24) of the sill beam (2) has an included angle α with the horizontal plane, satisfying the relation: α ≤ 30°.

7. The sill beam assembly (100) according to claim 2, characterized in that, The sill beam (2) has a protruding part (25), the protruding part (25) is located below the side wall (1), and the protruding part (25) extends in a direction away from the outside of the side wall (1).

8. The sill beam assembly (100) according to claim 7, characterized in that, The side wall (1) comprises: a side wall outer panel (11) and a side wall reinforcement plate (12), the side wall outer panel (11) is fixedly arranged on the outside of the side wall reinforcement plate (12), and the inner side of the side wall reinforcement plate (12) is fixedly connected to the sill beam (2).

9. The sill beam assembly (100) according to claim 8, wherein, The sill beam assembly (100) further comprises: a sill trim (6), the protruding part (25) has a first mounting part (251), and a second mounting part (26) is arranged at a fixed connection position between the sill beam (2) and the side wall reinforcement plate (12), and the sill trim (6) is fixedly connected to the sill beam (2) through the first mounting part (251) and the second mounting part (26).

10. A vehicle, characterized in that, Comprising the sill beam assembly (100) according to any one of claims 1-9.

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