Threshold beam structure and vehicle with same

Abstract

The utility model discloses a doorsill beam structure and a vehicle with the doorsill beam structure. The doorsill beam structure comprises a doorsill outer plate and a doorsill inner plate which are oppositely arranged. Each of the threshold outer plate and the threshold inner plate comprises an upper flanging section, a first connecting section, a second connecting section, a third connecting section and a lower flanging section from top to bottom; the upper flanging sections of the threshold outer plate and the threshold inner plate are connected in an attached mode, the lower flanging sections of the threshold outer plate and the threshold inner plate are connected in an attached mode, and a closed cavity is defined by the first connecting sections, the second connecting sections and the third connecting sections of the threshold outer plate and the threshold inner plate. The doorsill inner plate second connecting section is provided with a first concave part which is concave towards the closed cavity, and the first concave part is used for containing a brake pipeline. The brake pipeline is installed in the space defined by the outer wall of the first concave part and the side wall of the battery pack, it is guaranteed that the battery pipeline is located in the closed space, damage of sundries on the road surface to the brake pipeline is reduced, the battery pack can be installed close to the threshold inner plate, and the size design space of the battery pack in the width direction of the automobile body is enlarged.

Description

Technical Field

[0001] The present application relates to the technical field of automobile structure design, and in particular to a sill beam structure and a vehicle having the same. Background Art

[0002] At present, the brake lines of most new energy vehicles, especially pure electric vehicles, are usually arranged between the body rocker and the battery. Therefore, when arranging the battery, it is necessary to leave sufficient gap between the battery and the body rocker to ensure the installation space of the brake line. This arrangement of the brake line has many disadvantages. First, due to the need to reserve space for the arrangement of the brake line, the lateral arrangement space of the battery in the body is limited; secondly, because the brake line is located in the gap between the car rocker and the battery, it is an exposed space. During the driving process of the car, the brake line is easily hit by foreign objects and there is a risk of rupture. In addition, in the existing body structure design, the battery is fixed by bolts connected to the lower end of the inner plate of the body rocker through the ears extending from all sides. This fixing method makes it easy for the battery to leak out of the chassis. Utility Model Content

[0003] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the first embodiment of the present application provides a threshold beam structure that can reduce the installation gap between the vehicle body threshold and the battery pack and protect the brake line.

[0004] A second aspect of the present application provides a vehicle.

[0005] The threshold beam structure according to the first embodiment of the present application includes a threshold outer plate and a threshold inner plate arranged opposite to each other;

[0006] The rocker outer panel and the rocker inner panel both include an upper flange section, a first connecting section, a second connecting section, a third connecting section and a lower flange section from top to bottom;

[0007] The upper flanged sections of the sill outer panel and the sill inner panel are fitted and connected, the lower flanged sections of the sill outer panel and the sill inner panel are fitted and connected, and the first connecting section, the second connecting section and the third connecting section of the sill outer panel and the sill inner panel are enclosed to form a closed cavity;

[0008] The second connecting section of the rocker inner plate is provided with a first recessed portion which is recessed into the closed cavity, and the first recessed portion is used to accommodate the brake pipeline.

[0009] Based on the above technical scheme, the first aspect embodiment of the present application has at least the following beneficial effects: the threshold beam structure includes a threshold outer panel and a threshold inner panel arranged relatively to each other, the threshold outer panel and the threshold inner panel both include an upper flange section, a first connecting section, a second connecting section, a third connecting section and a lower flange section from top to bottom, the upper flange sections of the threshold outer panel and the threshold inner panel are fitted and connected, the lower flange sections of the threshold outer panel and the threshold inner panel are fitted and connected, the first connecting section, the second connecting section and the third connecting section of the threshold outer panel and the threshold inner panel are combined to form a closed cavity; the second connecting section of the threshold inner panel is provided with a first recessed portion concave into the closed cavity, and the first recessed portion is used to accommodate a brake line. The present application improves the structure of the door sill beam so that the brake line of the vehicle is fixedly installed in the space formed by the outer wall of the first recessed portion and the side wall of the battery pack through a fixed pipe clamp. On the one hand, it ensures that the battery line is located in a closed space to prevent damage to the brake line by road debris during driving. On the other hand, the battery pack can be fixedly installed close to the inner plate of the door sill, thereby increasing the size design space of the battery pack in the width direction of the vehicle body.

[0010] According to the threshold beam structure of the first aspect embodiment of the present application, the third connecting section of the threshold inner panel is provided with a first bent portion which is concave toward the closed cavity, the horizontal edge of the first bent portion is connected to the second connecting section of the threshold inner panel, the vertical edge of the first bent portion is connected to the third connecting section of the threshold inner panel, and the space semi-enclosed by the first bent portion is used to accommodate the fixing ears of the battery pack.

[0011] According to the threshold beam structure of the embodiment of the first aspect of the present application, a nut is fixed to the horizontal edge of the first bent portion on one side of the closed cavity, and the nut is used to be connected with the fixing ear by bolts.

[0012] According to the threshold beam structure of the first aspect of the present application, the upper flange section of the threshold outer panel and the threshold inner panel are joined together and connected by resistance spot welding, and the lower flange section of the threshold outer panel and the threshold inner panel are joined together and connected by resistance spot welding.

[0013] According to the threshold beam structure of the first aspect of the present application, a threshold energy absorption box is provided in the closed cavity, and the threshold energy absorption box is provided with a welding flange, and the threshold energy absorption box is fixedly connected to the first connecting section and the third connecting section of the threshold outer panel respectively through the welding flange.

[0014] According to the threshold beam structure of the first embodiment of the present application, the threshold beam structure further includes a threshold outer panel reinforcement plate, and the threshold outer panel reinforcement plate is fixed to a side of the threshold outer panel close to the threshold inner panel.

[0015] According to the vehicle body sill beam structure of the first embodiment of the present application, the sill beam structure further includes a sill inner panel reinforcement plate, and the sill inner panel reinforcement plate is fixed to a side of the sill inner panel close to the sill inner panel.

[0016] According to the vehicle body sill beam structure of the first embodiment of the present application, the number of sill energy absorption boxes arranged in the closed cavity of each sill beam is no less than two.

[0017] According to the vehicle of the second aspect of the present application, the vehicle includes the above-mentioned threshold beam structure, and the vehicle also includes a battery pack, a brake line and a fixing clip;

[0018] Wherein, the rocker outer panel is away from the vehicle body relative to the rocker inner panel;

[0019] The brake line is arranged in the first recessed portion of the second connecting section of the rocker inner plate, and is fixed to the side wall of the first recessed portion by the fixing clip.

[0020] According to the vehicle of the embodiment of the second aspect of the present application, the third connecting section of the rocker inner panel is provided with a first bent portion concave toward the closed cavity, the horizontal side of the first bent portion is connected to the second connecting section of the rocker inner panel, the vertical side of the first bent portion is connected to the third connecting section of the rocker inner panel, and the space semi-enclosed by the first bent portion is used to accommodate the fixing ear of the battery pack;

[0021] The battery pack is provided with fixing ears at four corners. The fixing ears are placed in a space semi-enclosed by the first bending portion and are fixedly connected to the horizontal side of the first bending portion by bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the automobile body frame structure in one embodiment of the present application;

[0024] Figure 2 A schematic diagram of a sill beam structure and a brake pipe arrangement in the prior art provided by the utility model of the present application;

[0025] Figure 3 A schematic diagram of a threshold beam structure and a brake duct arrangement in an embodiment of the first aspect of the present application;

[0026] Figure 4Another schematic diagram of the door sill beam structure and the brake duct arrangement in the embodiment of the first aspect of the present application;

[0027] Figure 5 This is a schematic diagram of the structure of the door sill energy absorption box in the embodiment of the first aspect of the present application;

[0028] Figure numerals: threshold beam structure 100; threshold outer panel 110, threshold outer panel upper flange section 111, threshold outer panel first connecting section 112, threshold outer panel second connecting section 113, threshold outer panel third connecting section 114, threshold outer panel lower flange section 115; threshold inner panel 120, threshold inner panel flange section 121, threshold inner panel first connecting section 122, threshold inner panel second connecting section 123, threshold inner panel third connecting section 124, horizontal edge 1241, vertical edge 1242, nut 1243; threshold inner panel lower flange section 125; first recessed portion 126; closed cavity 130; threshold energy absorption box 140, welding flange 141; threshold outer panel reinforcement plate 150, threshold inner panel reinforcement plate 160; vehicle body 200; brake line 300; fixed pipe clamp 310; battery pack 400; fixed lifting ear 410. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0031] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0032] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0034] The technical solution of the present application will be further described below in conjunction with embodiments and drawings.

[0035] Figure 1 The schematic diagram of the frame structure of the electric vehicle body 200 is shown. Referring to the directions of the arrows in the figure, the horizontal direction is the length direction of the body 200, the vertical direction is the height direction of the body 200, and the direction perpendicular to the paper plane is the width direction of the body 200 (i.e., the direction of the line connecting the left side of the body and the right side of the body, not shown in the figure), wherein the direction perpendicular to the paper plane inward is the direction pointing to the right side of the body 200, and the direction perpendicular to the paper plane outward is the direction pointing to the left side of the body 200. It should be noted that the "left side of the body" and "right side of the body" in the embodiments of the present application refer to the left side and right side of the body recognized when the occupant is located in the car (rather than outside the body directly in front of the body).

[0036] Figure 2 The present invention discloses a sill beam structure in the prior art. Figure 2 As a cross-sectional view, corresponding to Figure 1 The perspective of the AA section in . Figure 2 The horizontal direction indicated by the middle arrow is the width direction of the vehicle body 200, the horizontal right direction is the direction pointing to the inside of the vehicle body 200, and the horizontal left direction is the direction pointing to the outside of the vehicle body 200. Figure 1 and Figure 2In the prior art, the threshold beam structure 100 of an electric vehicle is usually a stamped structure, which is installed on the bottom plate of the body 200 of the electric vehicle. The threshold beam structure 100 usually includes a threshold outer plate 110 and a threshold inner plate 120, which are connected by resistance spot welding to form a closed hollow beam body. At the same time, a battery pack 400 is also installed on the bottom plate of the body 200 of the electric vehicle. The battery pack 400 is provided with fixing ears 410 around it, and the fixing ears 410 are provided with battery mounting holes (not shown in the figure). The battery pack 400 is fixedly installed on the side of the threshold beam close to the body 200 through the fixing ears 410.

[0037] refer to Figure 2 In the prior art, when the battery pack 400 is arranged, a certain gap needs to be reserved between the threshold inner plate 120 and the battery pack 400 in the width direction of the vehicle body 200 for installing the brake line 300. The brake line 300 is a thin metal tube that transmits the braking force. The brake line 300 is filled with high-pressure oil. Usually, the brake actuation mechanism is in the front engine compartment. The brake actuation mechanism causes the brake oil hydraulic pressure inside the brake line 300 to change, and the brake oil is transmitted to the brake caliper of the wheel through the brake line 300 to perform the braking action. Therefore, the brake line 300 is an important safety component in the vehicle. Once damaged, it will cause the brake to fail, posing a safety hazard to the vehicle.

[0038] In the prior art, the layout of the brake line 300 occupies the space in the width direction of the vehicle body 200, which limits the design size of the battery pack 400 in the width direction of the vehicle body 200; at the same time, the brake line 300 is located in the exposed space between the threshold beam structure 100 and the battery pack 400, which is very easy to be hit by foreign objects during the driving process of the vehicle, and the brake line 300 is at risk of rupture, which buries a huge safety hazard for the vehicle. In addition, the installation position of the battery pack 400 makes it easy for the battery pack 400 to be exposed outside the space of the vehicle body 200, which is not convenient for the protection of the battery pack 400.

[0039] In order to solve the above technical problems, a first embodiment of the present application provides a threshold beam structure 100 . Figure 3 and Figure 4 The corresponding Figure 1 The horizontal direction indicated by the arrow in the figure is the width direction of the vehicle body 200, the horizontal right direction is the direction pointing to the inside of the vehicle body 200, and the horizontal left direction is the direction pointing to the outside of the vehicle body 200.

[0040] The sill beam structure 100 provided in the embodiment of the present application includes a sill outer panel 110 and a sill inner panel 120 arranged opposite to each other, wherein the sill outer panel 110 is closer to the outer side of the vehicle body 200 than the sill inner panel 120. The sill outer panel 110 and the sill inner panel 120 both include an upper flange section, a first connecting section, a second connecting section, a third connecting section and a lower flange section from top to bottom along the height direction of the vehicle body 200, as shown in FIG. Figure 3 For the convenience of description, the upper flange section 111, the first connecting section 112, the second connecting section 113, the third connecting section 114 and the lower flange section 115 of the sill outer panel, as well as the flange section 121, the first connecting section 122, the second connecting section 123, the third connecting section 124 and the lower flange section 125 of the sill inner panel are numbered respectively in the present application.

[0041] The upper flanged sections of the rocker outer panel 110 and the rocker inner panel 120 are connected in affixed connection, the lower flanged sections of the rocker outer panel 110 and the rocker inner panel 120 are connected in affixed connection, and the first connecting section, the second connecting section and the third connecting section of the rocker outer panel 110 and the rocker inner panel 120 are enclosed to form a closed cavity 130. In other words, referring to Figure 3 The upper flange section 111 of the sill outer panel and the upper flange section 121 of the sill inner panel are fitted and connected to each other, the lower flange section 115 of the sill outer panel and the lower flange section 125 of the sill inner panel are fitted and connected to each other, the first connecting section 112 of the sill outer panel, the second connecting section 113 of the sill outer panel, the third connecting section 114 of the sill outer panel and the first connecting section 122 of the sill inner panel, the second connecting section 123 of the sill inner panel, and the third connecting section 124 of the sill inner panel are surrounded to form a closed cavity 130, and the closed cavity 130 is the cavity of the sill beam structure 100.

[0042] refer to Figure 3 In the embodiment of the present application, the first connecting segment and the third connecting segment are approximately horizontal, and the second connecting segment is approximately vertical. As an alternative, the first connecting segment and the third connecting segment can be inclined surfaces inclined at a certain angle to the horizontal plane, and the present application does not make specific limitations here.

[0043] Optionally, in the present application, the sill inner plate 120 and the sill outer plate 110 are independently stamped plates, the upper flanged sections of the sill outer plate 110 and the sill inner plate 120 are bonded together and connected by resistance spot welding, and the lower flanged sections of the sill outer plate 110 and the sill inner plate 120 are bonded together and connected by resistance spot welding. Alternatively, the sill beam structure 100 can be manufactured by extrusion molding, and the sill inner plate 120 and the sill outer plate 110 are integrally formed to form the outer side wall of the closed cavity.

[0044] Furthermore, the second connecting section 123 of the rocker inner plate is provided with a first recessed portion 126 recessed toward the closed cavity 130 , and the first recessed portion 126 is used to accommodate the brake line 300 . Figure 3 The first recessed portion 126 is provided in the second connecting section 123 of the sill inner plate, and the second connecting section 123 of the sill inner plate is recessed inwardly in a direction away from the vehicle body 200, that is, the first recessed portion 126 is recessed inwardly into the closed cavity 130. The space inside the first recessed portion 126 is used to accommodate the brake line 300. Therefore, in the width direction of the vehicle body 200, there is no need to reserve an installation space for the brake line 300 between the sill inner plate 120 and the battery pack 400. The size of the battery pack 400 in the width direction of the vehicle body 200 can be designed to be larger, thereby extending the vehicle's driving time. At the same time, the brake line 300 is located in the space surrounded by the side wall of the first recessed portion 126 and the battery pack 400, which protects the brake line 300 and prevents particles splashed from the road surface from piercing the brake line 300 during the vehicle's driving, thereby improving the safety of the vehicle.

[0045] Optionally, the third connecting section 124 of the rocker inner plate is provided with a first bending portion (in the figure, marked separately by a horizontal edge 1241 and a vertical edge 1242) concave toward the closed cavity 130. Figure 3 The third connecting section 124 of the rocker inner panel is bent upward along the height direction of the vehicle body 200 to form a first bent portion, that is, a portion of the third connecting section 124 of the rocker inner panel close to the second connecting section 123 of the rocker inner panel is concave toward the inside of the closed cavity 130 to form a first bent portion. The first bent portion includes a horizontal edge 1241 and a vertical edge 1242, the horizontal edge 1241 is connected to the second connecting section 123 of the rocker inner panel, and the vertical edge 1242 is connected to the third connecting section 124 of the rocker inner panel. The space formed by the semi-enclosed space of the first bent portion is used to accommodate the fixing ear 410 of the battery pack 400.

[0046] contrast Figure 2 and Figure 3 In the prior art, the fixing ear 410 is fixedly connected to the third connecting section 124 of the rocker inner panel; however, in the embodiment of the present application, a first bending portion is provided on the third connecting section 124 of the rocker inner panel, so that a part of the third connecting section 124 of the rocker inner panel is lifted upward along the height direction of the vehicle body 200. Therefore, the rocker beam structure 100 in the embodiment of the present application can lift the battery pack 400 upward at the fixed position on the vehicle body 200, reduce the risk of the battery pack 400 being exposed, and improve the safety performance of the battery pack 400.

[0047] refer to Figure 3In the embodiment of the present application, the fixing ear 410 of the battery pack 400 is fixedly connected to the third connecting section 124 of the inner panel of the door sill by bolting. Furthermore, the horizontal edge 1241 of the first bent portion is fixed with a nut 1243 on one side of the closed cavity, and the nut 1243 is used to cooperate with the fixing ear 410 by bolting.

[0048] Exemplarily, a nut 1243 is pre-welded on the inner side of the third connecting section of the door sill of the vehicle body 200, and a mounting hole is provided on the fixing ear 410. During the installation of the battery pack 400, the bolt is inserted into the mounting hole and tightened with the nut 1243 to fix the battery pack 400. This method can simplify the installation process of the battery pack 400.

[0049] Optionally, refer to Figure 4 The sill beam structure 100 further includes a sill outer panel reinforcement plate 150 , and the sill outer panel reinforcement plate 150 is fixed to a side of the sill outer panel 110 close to the sill inner panel 120 .

[0050] Optionally, refer to Figure 4 The sill beam structure 100 further includes a sill inner panel reinforcement plate 160 . The sill inner panel reinforcement plate 160 is fixed to a side of the sill inner panel 120 close to the sill inner panel 120 .

[0051] It is understandable that when the rocker inner panel 120 and the rocker outer panel 110 are formed by stamping a plate, the strength of a single stamped part is limited due to the thickness of the plate. In the present application, by providing a reinforcing plate inside the closed cavity of the rocker inner panel 120 and / or the rocker outer panel 110, the strength of the rocker inner panel 120 and / or the rocker outer panel 110 can be improved in a combined form.

[0052] For example, reference Figure 4 and Figure 5 , a threshold energy absorption box 140 is provided in the closed cavity 130, and the threshold energy absorption box 140 is provided with a welding flange 141, and the threshold energy absorption box 140 is fixedly connected to the first connecting section and the third connecting section of the threshold outer panel 110 respectively through the welding flange 141. Specifically, the threshold energy absorption box 140 is provided in the closed cavity 130 of the threshold beam structure in the front passenger compartment area, and the threshold energy absorption box 140 can also be provided in the threshold beam structure at other positions of the vehicle body as required, and the present application does not make specific limitations here.

[0053] It is understandable that in a car collision, especially in a side collision or a column collision, the sill beam structure will be squeezed and deformed, and the sill energy absorption box 140 disposed between the outer sill outer plate 110 and the inner sill plate 120 can produce plastic deformation when it collapses, thereby absorbing deformation energy and protecting the collision safety of the entire vehicle. Optionally, the sill energy absorption box 140 is overlapped with the first connecting section 112 of the outer sill plate and the third connecting section plate of the outer sill through welding flanges 141, and fixedly connected by spot welding.

[0054] It is understandable that the number of the sill energy absorption boxes 140 inside the vehicle sill beam structure 100 is designed according to the vehicle size parameters. Generally, the number of sill energy absorption boxes 140 is not less than 2. As an example, it can be designed to be 3 or 4. This application does not give examples one by one here.

[0055] A second aspect of the present application provides a vehicle, referring to Figures 3 to 5 The vehicle includes a sill beam structure 100, the sill beam structure 100 includes a sill outer panel 110 and a sill inner panel 120 which are arranged opposite to each other, the sill outer panel 110 and the sill inner panel 120 each include an upper flange section, a first connecting section, a second connecting section, a third connecting section and a lower flange section from top to bottom, a sill outer panel first connecting section 112, a sill outer panel second connecting section 113, a sill outer panel third connecting section 114, and a sill inner panel first connecting section 122, a sill inner panel second connecting section 123, a sill inner panel third connecting section The connecting section 124 encloses a closed cavity 130, and the second connecting section 123 of the rocker inner panel is provided with a first recessed portion 126 recessed toward the closed cavity 130. The vehicle further comprises a battery pack 400, a brake line 300 and a fixed pipe clamp 310. The rocker outer panel 110 is away from the vehicle body 200 relative to the rocker inner panel 120. The brake line 300 is arranged in the first recessed portion 126 of the second connecting section 123 of the rocker inner panel 120, and is fixed to the outer side wall of the first recessed portion 126 by the fixed pipe clamp 310.

[0056] Furthermore, the sill beam structure 100 included in the vehicle is provided with a first bent portion concave toward the closed cavity 130 in the third connecting section 124 of the sill inner panel, the horizontal edge 1241 of the first bent portion is connected to the second connecting section 113 of the sill inner panel, the vertical edge 1242 of the first bent portion is connected to the third connecting section 115 of the sill inner panel, and the battery pack 400 is provided with fixing ears 410 at the four corners, the fixing ears 410 are placed in the space semi-enclosed by the first bent portion, and are fixedly connected to the horizontal edge 1241 of the first bent portion by bolts.

[0057] It can be understood that the present application improves the sill beam structure 100 so that the vehicle's brake line 300 is fixedly installed in the space formed by the outer wall of the first recessed portion 126 and the side wall of the battery pack 400 through the fixed pipe clamp 310. On the one hand, it ensures that the battery line is located in a closed space to prevent damage to the brake line 300 by road debris during driving. On the other hand, the battery pack 400 can be fixedly installed close to the sill inner panel 120, thereby increasing the size design space of the battery pack 400 in the width direction of the vehicle body 200.

[0058] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A threshold beam structure, characterized in that: including a threshold outer panel and a threshold inner panel which are arranged opposite to each other; The rocker outer panel and the rocker inner panel both include an upper flange section, a first connecting section, a second connecting section, a third connecting section and a lower flange section from top to bottom; The upper flanged sections of the sill outer panel and the sill inner panel are fitted and connected, the lower flanged sections of the sill outer panel and the sill inner panel are fitted and connected, and the first connecting section, the second connecting section and the third connecting section of the sill outer panel and the sill inner panel are enclosed to form a closed cavity; The second connecting section of the rocker inner plate is provided with a first recessed portion which is recessed into the closed cavity, and the first recessed portion is used to accommodate the brake pipeline.

2. The threshold beam structure according to claim 1, characterized in that: The third connecting section of the inner panel of the rocker sill is provided with a first bent portion which is concave toward the closed cavity, the horizontal side of the first bent portion is connected to the second connecting section of the inner panel of the rocker sill, the vertical side of the first bent portion is connected to the third connecting section of the inner panel of the rocker sill, and the space semi-enclosed by the first bent portion is used to accommodate the fixing ears of the battery pack.

3. The threshold beam structure according to claim 2, characterized in that: A nut is fixed to the horizontal side of the first bent portion on one side of the closed cavity, and the nut is used to be connected with the fixing lifting ear through bolts.

4. The threshold beam structure according to claim 1, characterized in that: The upper flanged sections of the threshold outer panel and the threshold inner panel are joined together and connected by resistance spot welding, and the lower flanged sections of the threshold outer panel and the threshold inner panel are joined together and connected by resistance spot welding.

5. The threshold beam structure according to claim 1, characterized in that: A door sill energy absorption box is arranged in the closed cavity, and the door sill energy absorption box is provided with a welding flange. The door sill energy absorption box is fixedly connected to the first connecting section and the third connecting section of the door sill outer panel respectively through the welding flange.

6. The threshold beam structure according to claim 1, characterized in that: The threshold beam structure further comprises a threshold outer panel reinforcement plate, and the threshold outer panel reinforcement plate is fixed to a side of the threshold outer panel close to the threshold inner panel.

7. The threshold beam structure according to claim 1, characterized in that: The sill beam structure further comprises a sill inner panel reinforcement plate, and the sill inner panel reinforcement plate is fixed to a side of the sill inner panel close to the sill inner panel.

8. The door sill beam structure according to claim 5, characterized in that: The number of sill energy absorption boxes arranged in the closed cavity of each sill beam shall be no less than two.

9. A vehicle, characterized in that: The vehicle comprises a rocker beam structure as claimed in any one of claims 1 to 8, the vehicle further comprising a battery pack, a brake line and a fixing clip; Wherein, the rocker outer panel is away from the vehicle body relative to the rocker inner panel; The brake line is arranged in the first recessed portion of the second connecting section of the rocker inner plate, and is fixed to the side wall of the first recessed portion by the fixing clip.

10. The vehicle according to claim 9, characterized in that The third connecting section of the rocker inner panel is provided with a first bent portion concave toward the closed cavity, the horizontal side of the first bent portion is connected to the second connecting section of the rocker inner panel, the vertical side of the first bent portion is connected to the third connecting section of the rocker inner panel, and the space semi-enclosed by the first bent portion is used to accommodate the fixing ear of the battery pack; The battery pack is provided with fixing ears at four corners. The fixing ears are placed in a space semi-enclosed by the first bending portion and are fixedly connected to the horizontal side of the first bending portion by bolts.

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