Vehicle body structure and vehicle

Abstract

The utility model provides a vehicle body structure and a vehicle. The vehicle body structure comprises a vehicle body framework and a battery pack located at the bottom of the vehicle body framework. A doorsill beam in the vehicle body framework, a battery pack frame of the battery pack and a side pedal mounting plate located on one side of the doorsill beam are integrally formed. The side pedal mounting plate extends in the front-back direction of the whole vehicle, in the left-right direction of the whole vehicle, one side of the side pedal mounting plate is connected with the doorsill beam, and the other side of the side pedal mounting plate extends towards the outside of the vehicle. According to the vehicle body structure, the doorsill beam, the battery pack side frame and the side pedal mounting plate are integrally formed, so that the integration degree of the vehicle body structure can be improved, the preparation process can be simplified, the production efficiency of a vehicle can be improved, and the doorsill beam, the battery pack side frame and the side pedal mounting plate are integrated into an integral structure; and the side pedal mounting plate extends out of the vehicle, so that the rigidity of the side part of the vehicle body is improved, the collision energy absorption space of the side part of the vehicle body is increased, and the side collision safety of the whole vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and particularly relates to a vehicle body structure; at the same time, the utility model also relates to a vehicle provided with the vehicle body structure. Background Art

[0002] At present, the battery pack frame on the vehicle is located inside the sill beam, and the side step mounting plate is located outside the sill beam. The sill beam, the battery pack frame and the side step mounting plate are three separate structures and need to be installed through connecting structures such as connecting brackets. This will increase the number of vehicle components and make the vehicle body preparation process complex, thus being unfavorable for improving the vehicle production efficiency. At the same time, the connection between the sill beam, the side step mounting plate and the battery pack frame by using a connecting bracket makes the improvement effect of the vehicle body side stiffness limited, thus being unfavorable for the collision safety of the whole vehicle during a side impact. Summary of the Utility Model

[0003] In view of this, the utility model aims to provide a vehicle body structure, which is beneficial to improving the production efficiency of the whole vehicle and also beneficial to enhancing the side impact safety of the whole vehicle.

[0004] To achieve the above object, the technical solution of the utility model is realized as follows:

[0005] A vehicle body structure includes a vehicle body frame and a battery pack located at the bottom of the vehicle body frame; the sill beam in the vehicle body frame, the battery pack frame of the battery pack, and a side step mounting plate located on one side of the sill beam are integrally formed; wherein, the side step mounting plate extends along the front and rear directions of the whole vehicle, and in the left and right directions of the whole vehicle, one side of the side step mounting plate is connected to the sill beam, and the other side of the side step mounting plate extends towards the outside of the vehicle.

[0006] Further, the battery pack frame has a side frame arranged side by side with the sill beam, and the sill beam, the side step mounting plate and the side frame are integrally formed.

[0007] Further, the sill beam, the side step mounting plate and the side frame are integrally formed by an extruded profile.

[0008] Further, reinforcing ribs are provided in the sill beam, the side step mounting plate and the side frame, and from the cross-section in the left and right directions of the whole vehicle, the sill beam, the side step mounting plate and the side frame are each separated by the corresponding reinforcing rib to form a multi-cavity energy absorption structure.

[0009] Further, the reinforcing ribs in the side step mounting plate include first reinforcing ribs arranged along the up and down directions of the whole vehicle, and the side step mounting plate is separated by the first reinforcing ribs into a plurality of first cavities arranged in sequence along the left and right directions of the whole vehicle.

[0010] Furthermore, the reinforcing ribs within the sill beam include second reinforcing ribs and third reinforcing ribs arranged in a transverse and longitudinal intertwined manner, and the second reinforcing ribs and the third reinforcing ribs divide the sill beam into a plurality of second cavities.

[0011] Furthermore, in the vehicle body frame, there are a side wall reinforcing plate, a side wall inner panel, and a sill inner panel connected to the sill beam. The side wall reinforcing plate and the sill inner panel are connected to the sill beam through FDS, and the side wall inner panel and the sill beam are connected through SPR.

[0012] Furthermore, the reinforcing ribs within the side frame include fourth reinforcing ribs arranged in the left-right direction of the whole vehicle, and the fourth reinforcing ribs divide the side frame into a plurality of third cavities arranged in the up-down direction of the whole vehicle in sequence.

[0013] Furthermore, the side frame includes a frame part and a connecting part connected to the frame part, and the connecting part is connected to the sill beam; in the left-right direction of the whole vehicle, along the direction pointing to the frame part, the thickness of the connecting part gradually increases in the up-down direction of the whole vehicle.

[0014] Compared with the prior art, the present utility model has the following advantages:

[0015] For the vehicle body structure of the present utility model, by integrally forming the sill beam, the side frame of the battery pack, and the side step mounting plate, the integration degree of the vehicle body structure can be improved, which helps to streamline the preparation process, thereby facilitating the improvement of vehicle production efficiency. At the same time, the sill beam, the side frame of the battery pack, and the side step mounting plate are integrated into an integral structure, and the side step mounting plate extends outward from the vehicle, which also helps to improve the stiffness of the vehicle body side and increase the collision energy absorption space on the vehicle body side, thus being beneficial to enhancing the safety of the vehicle in side collisions.

[0016] Secondly, the sill beam, the side step mounting plate, and the side frame in the battery pack frame are integrally formed, which is conducive to the integrated design and preparation of the three. Making the sill beam, the side step mounting plate, and the side frame made of extruded profiles helps to reduce the weight of the sill beam, the side frame, and the side step mounting plate, which is beneficial to the lightweight design of the vehicle body. At the same time, taking advantage of the good characteristics of the extruded profile in terms of collapse energy absorption, the collision energy absorption capacity of the side step mounting plate and the sill beam can also be increased. Making the cross-sections of the sill beam, the side step mounting plate, and the side frame all be multi-cavity energy absorption structures can not only utilize the advantages of the high strength of the multi-cavity structure to increase the structural strength of the vehicle body side, but also utilize the characteristics that the multi-cavity energy absorption structure can fully collapse and absorb energy during side collisions of the whole vehicle to improve the energy absorption effect during side collisions of the vehicle body.

[0017] Furthermore, the first reinforcing ribs inside the side step mounting plate are arranged in the up-and-down direction of the whole vehicle, and the first cavities are arranged in sequence in the left-and-right direction of the whole vehicle. This can make there be no transverse (i.e., left-and-right direction of the whole vehicle) reinforcing ribs inside the side step mounting plate, enabling the side step mounting plate to become the main energy absorption area during a side collision of the whole vehicle, and achieving the effect of rapid deformation and energy absorption during a side collision to release the collision force, thereby being conducive to protecting the occupants. The second reinforcing ribs and the third reinforcing ribs arranged in a crisscross pattern of horizontal and vertical directions are provided inside the sill beam, which can make the sill beam have a relatively high energy absorption efficiency while also having a relatively high stiffness compared to the side step mounting plate, being able to reduce the extrusion on the battery pack frame before sufficient deformation, and being conducive to protecting the battery pack.

[0018] In addition, the sill beam is connected to the side wall reinforcement plate, the inner side wall panel, and the inner sill panel, which can make the sill beam form a high-strength structure by connecting with the surrounding structures in the vehicle body frame, better absorb the side collision force, reduce the collision impact on the battery pack, and improve the collision safety of the battery pack. The side wall reinforcement plate and the inner sill panel are connected to the sill beam through FDS, and the inner side wall panel is connected to the sill beam through SPR, which can facilitate the connection between the sill beam and different surrounding vehicle body structures and also ensure the reliability of their connections.

[0019] In addition, the fourth reinforcing ribs inside the side frame are arranged in the left-and-right direction of the whole vehicle, and the third cavities are arranged in sequence in the up-and-down direction of the whole vehicle. This can make there be transverse reinforcing ribs inside the side frame and also be a Z-direction multi-cavity structure, enabling the side frame to become an internal rigid area during a side collision of the whole vehicle and better protecting the battery pack during a side collision. Making the thickness of the connection part gradually increase can ensure the reliability of the connection between the connection part and the frame part, be able to ensure the stiffness of the root position where the connection part is connected to the frame part when the whole vehicle has a side collision, making this position not easily break, and being conducive to dispersing and transmitting the collision force along the battery pack frame.

[0020] In addition, another object of the present invention is to propose a vehicle, in which the vehicle body structure as described above is provided.

[0021] For the vehicle of the present invention, by providing the vehicle body structure as above, it is conducive to improving the side collision safety of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 It is a partial structural schematic diagram of the vehicle body structure according to the embodiment of the present invention;

[0024] Figure 2Structural schematic diagram of a partial vehicle body structure according to an embodiment of the present utility model from one perspective;

[0025] Figure 3 Structural schematic diagram of a partial vehicle body structure according to an embodiment of the present utility model from another perspective;

[0026] Figure 4 Structural schematic diagram of a battery pack frame, a side step mounting plate, and a sill beam according to an embodiment of the present utility model;

[0027] Figure 5 is Figure 4 the front view in

[0028] Explanation of reference numerals:

[0029] 1, side frame; 2, sill beam; 3, side step mounting plate; 4, side wall reinforcement plate; 5, inner side wall panel; 6, inner sill panel;

[0030] 100, third cavity; 200, second cavity; 300, first cavity; 400, battery pack;

[0031] 101, frame part; 102, connecting part; 103, fourth reinforcing rib; 104, extending part;

[0032] 201, second reinforcing rib; 202, third reinforcing rib; 203, notch; 204, rib;

[0033] 301, first reinforcing rib. Detailed implementation manners

[0034] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0035] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are 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 therefore should not be construed as a limitation to the present utility model. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0036] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" 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 components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0037] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0038] This embodiment relates to a vehicle body structure, aiming to solve the problems in the prior art that the sill beam 2, the battery pack frame, and the side step mounting plate 3 are separately arranged, resulting in a large number of vehicle parts, low vehicle production efficiency, and poor vehicle side impact performance.

[0039] In terms of the overall composition, the vehicle body structure of this embodiment includes a vehicle body frame and a battery pack 400 located at the bottom of the vehicle body frame. The sill beam 2 in the vehicle body frame, the battery pack frame of the battery pack 400, and the side step mounting plate 3 located on one side of the sill beam 2 are integrally formed. Among them, the side step mounting plate 3 extends along the front-rear direction of the vehicle, and on the left-right direction of the vehicle, one side of the side step mounting plate 3 is connected to the sill beam 2, and the other side of the side step mounting plate 3 extends towards the outside of the vehicle.

[0040] For the vehicle body structure described in this embodiment, by integrally forming the sill beam 2, the side frame 1 of the battery pack 400, and the side step mounting plate 3, the integration degree of the vehicle body structure can be improved, the number of parts can be reduced, which helps to streamline the preparation process, thereby facilitating the improvement of vehicle production efficiency. At the same time, the sill beam 2, the side frame 1 of the battery pack 400, and the side step mounting plate 3 are integrated into an integral structure, and the side step mounting plate 3 extends towards the outside of the vehicle, which also helps to improve the stiffness of the vehicle body side and increase the side impact energy absorption space of the vehicle body, thus being beneficial to enhancing the safety of the vehicle during side impact.

[0041] Based on the above overall introduction, an exemplary structure of the vehicle body structure described in this embodiment is as shown in Figure 1 Among them, the battery pack frame has a side frame 1 arranged side by side with the sill beam 2, and the sill beam 2, the side step mounting plate 3, and the side frame 1 are integrally formed. Among them, the side frame 1 is respectively located inside the sill beam 2, and the side step mounting plate 3 is located inside the sill beam 2. Integrally forming the sill beam 2, the side step mounting plate 3, and the side frame 1 can facilitate the integrated design and preparation of the three.

[0042] As a preferred implementation manner, as shown in Figure 4 and Figure 5As shown in the figure, the sill beam 2, the side step mounting plate 3 and the side frame 1 are integrally formed by extrusion profiles. Such a setting helps to reduce the weight of the sill beam 2, the side frame 1 and the side step mounting plate 3, which is beneficial to the lightweight design of the vehicle body. At the same time, taking advantage of the better energy absorption characteristics of the extrusion profile during collapse, the collision energy absorption capacity of the side step mounting plate 3 and the sill beam 2 can also be increased.

[0043] Among them, the bottom of the sill beam 2 is located between the side step mounting plate 3 and the side frame 1, and the dividing lines between the sill beam 2 and the side step mounting plate 3 and the side frame 1 are as shown by the dotted lines in Figure 5 . When specifically manufacturing, aluminum alloy extrusion profiles can be used to improve the service performance of the three components of the sill beam 2, the side step mounting plate 3 and the side frame 1.

[0044] To further improve the energy absorption effect of the vehicle body structure during side collisions, in this embodiment, reinforcing ribs are provided in the sill beam 2, the side step mounting plate 3 and the side frame 1. And from the cross-section in the left-right direction of the whole vehicle, the sill beam 2, the side step mounting plate 3 and the side frame 1 are all separated by the corresponding reinforcing ribs to form a multi-cavity energy absorption structure. The setting of multiple energy absorption structures here can not only utilize the advantages of high strength of the multi-cavity structure to increase the structural strength of the side part of the vehicle body, but also utilize the characteristics that the multi-cavity energy absorption structure can fully collapse and absorb energy during side collisions of the whole vehicle to improve the energy absorption effect during side collisions of the vehicle body.

[0045] In some embodiments, as shown in Figure 4 and Figure 5 , the reinforcing ribs in the side step mounting plate 3 include the first reinforcing ribs 301 arranged in the up-down direction of the whole vehicle, and multiple first cavities 300 arranged in sequence in the left-right direction of the whole vehicle are separated in the side step mounting plate 3 by the first reinforcing ribs 301. The formation of multiple first cavities 300 through the first reinforcing ribs 301 here can make there be no transverse (i.e., left-right direction of the whole vehicle) reinforcing ribs in the side step mounting plate 3, enabling the side step mounting plate 3 to become the main energy absorption area during side collisions of the whole vehicle, and achieving the effect of rapid deformation and energy absorption during side collisions to release the collision force, thus being beneficial to protecting the occupants. When specifically implementing, the number of the first reinforcing ribs 301 can be three as shown in the figure, or the number and position of the first reinforcing ribs 301 can be adaptively adjusted according to the usage requirements.

[0046] As a preferred embodiment, still referring to Figure 4 and Figure 5 , the reinforcing ribs in the sill beam 2 include the second reinforcing ribs 201 and the third reinforcing ribs 202 arranged in a horizontal and vertical interlaced manner. The second reinforcing ribs 201 and the third reinforcing ribs 202 separate to form multiple second cavities 200 in the sill beam 2. Among them, multiple second reinforcing ribs 201 are arranged in the up-down direction of the whole vehicle, and multiple third reinforcing ribs 202 are arranged in the left-right direction of the whole vehicle, which is beneficial to the formation of multiple second cavities 200.

[0047] Here, multiple second cavities 200 cooperate, which can enable the sill beam 2 to have a high energy absorption efficiency while the multiple second cavities 200 form a multi-cavity structure in the vehicle's Y direction (left-right direction of the vehicle) and Z direction (up-down direction of the vehicle), and also have a relatively high stiffness relative to the side step mounting plate 3, and can reduce the extrusion of the battery pack frame before sufficient deformation, which is beneficial to protecting the battery pack 400.

[0048] In addition, as Figure 5 shown in, the reinforcing ribs in the side frame 1 in this embodiment include fourth reinforcing ribs 103 arranged in the left-right direction of the vehicle, and multiple third cavities 100 arranged in sequence in the up-down direction of the vehicle are separated by the fourth reinforcing ribs 103 in the side frame 1. This makes the side frame 1 have transverse reinforcing ribs (i.e., the fourth reinforcing ribs 103), and at the same time, it is also a multi-cavity structure in the Z direction (up-down direction of the vehicle), which can make the side frame 1 become an internal rigid area during a side collision of the vehicle and can better protect the battery pack 400 during a side collision.

[0049] As a preferred implementation manner, as Figure 5 shown in, the side frame 1 in this embodiment includes a frame part 101 and a connecting part 102 connected to the frame part 101, and the connecting part 102 is connected to the sill beam 2. In the left-right direction of the vehicle, along the direction pointing to the frame part 101 ( Figure 5 the arrow direction in the figure), the thickness of the connecting part 102 gradually increases in the up-down direction of the vehicle. Here, the thickness of the connecting part 102 is gradually increased, which can ensure the reliability of the connection between the connecting part 102 and the frame part 101, and can ensure the stiffness of the root position where the connecting part 102 is connected to the frame part 101 during a side collision of the vehicle, so that this position is not easily broken, which is beneficial to dispersing and transmitting the collision force along the battery pack frame.

[0050] Specifically, the frame part 101 is arranged in the up-down direction of the vehicle and extends in the front-back direction of the vehicle. The connecting part 102 is connected to the outside of the frame part 101 and is connected to the middle and bottom of the outside of the frame part 101. During specific implementation, the top surface of the connecting part 102 is inclined upward along the direction pointing to the frame part 101 (i.e., the arrow direction in the figure), and the bottom surface of the connecting part 102 is inclined downward along the direction pointing to the frame part 101. In this way, the distance between the top surface and the bottom surface of the connecting part 102 gradually increases along the direction pointing to the frame part 101, that is, the thickness of the connecting part 102 gradually increases in the up-down direction of the vehicle.

[0051] Among them, in order to make the top of the connecting part 102 be inclined, and based on this inclined arrangement, a notch 203 is also formed at the bottom of the sill beam 2 on the side close to the frame part 101. In addition, it is possible to make one of its third reinforcing ribs 202 be coplanar with the top wall of the side step mounting plate 3, and the third reinforcing rib 202 is connected to the top wall of the connecting part 102, so as to further improve the structural strength of the side part of the vehicle body. In addition, extension parts 104 extending inward are respectively provided at the bottoms of the respective frame parts 101, and the lower cover of the battery pack 400 is specifically connected to the extension parts 104.

[0052] As Figure 2 and Figure 3 shown in, a side wall reinforcement plate 4, a side wall inner panel 5 and a sill inner panel 6 connected to the sill beam 2 are provided in the vehicle body frame, and the side wall reinforcement plate 4 and the sill inner panel 6 are connected to the sill beam 2 by FDS (Flow Drill Screw, abbreviated as rotary tapping riveting), and the side wall inner panel 5 is connected to the sill beam 2 by SPR (Self Piercing Rivet, abbreviated as self-piercing riveting).

[0053] Such an arrangement can make the sill beam 2 form a high-strength structure when connected to the surrounding structures in the vehicle body frame, can better absorb the side impact collision force, reduce the collision impact on the battery pack 400, and improve the collision safety of the battery pack 400. In addition, the side wall reinforcement plate 4 and the sill inner panel 6 are connected to the sill beam 2 by FDS, and the side wall inner panel 5 is connected to the sill beam 2 by SPR, which can facilitate the connection between the sill beam 2 and different surrounding vehicle body structures, and can also ensure the reliability of the connection between them.

[0054] In terms of the specific structure, referring to Figure 2 and Figure 3 shown in, corresponding to the B-pillar in the vehicle body structure, the side wall reinforcement plate 4 extends along the up-and-down direction of the whole vehicle, and the bottom of the side wall reinforcement plate 4 is in the shape of "⊥", and the horizontal part is connected to the outside of the top of the sill beam 2, so as to increase the connection area between the side wall reinforcement plate 4 and the sill beam 2, and can improve the connection strength and stability between the two. In addition, a convex strip 204 that protrudes upward and extends along the front-rear direction of the whole vehicle is formed at the top of the sill beam 2, and the bottom of the side wall reinforcement plate 4 is also connected to the outside of the convex strip 204 to further improve the connection effect.

[0055] In addition, the inner side panel 5 is disposed corresponding to the vertical portion at the bottom of the side reinforcement panel 4, and is buckled with the side reinforcement panel 4 to form a cavity structure. The bottom of the inner side panel 5 is connected to the inner side of the rib 204. The inner sill panel 6 is located inside the rib 204 and is arranged following the top of the sill beam 2. The bottom of the side reinforcement panel 4 is connected to the outer side of the sill beam 2 through FDS, and the inner sill panel 6 is connected to the inner side of the sill beam 2 through FDS. The side reinforcement panel 4, the inner side panel 5 and the rib 204 are connected to each other through SPR.

[0056] To further improve the performance of the side step mounting plate 3, as Figure 5 shown in the figure, in the left-right direction of the whole vehicle, along the direction pointing to the border part 101 (i.e., Figure 5 the arrow direction in the figure), the thickness of the side step mounting plate 3 gradually increases in the up-down direction of the whole vehicle. In this way, the overall stiffness of the side step mounting plate 3 can be utilized to gradually increase from the outside to the inside, so that a step-by-step collapse and energy absorption is formed at the position of the side step mounting plate 3 during a side collision of the whole vehicle, which helps to improve the side collision energy absorption effect.

[0057] Specifically in terms of structure, the top surface of the side step mounting plate 3 in this embodiment is arranged parallel to the horizontal plane, and the bottom surface of the side step mounting plate 3 is inclined upward along the direction pointing to the outside of the vehicle, so that the distance between the top surface and the bottom surface of the side step mounting plate 3 gradually increases along the direction pointing to the border part 101 (i.e., Figure 5 the arrow direction in the figure). In addition, during specific implementation, the shape of the side step mounting plate 3 can be adjusted adaptively according to requirements.

[0058] For the body structure described in this embodiment, by integrally forming the sill beam 2, the battery pack frame and the side step mounting plate 3, and forming energy absorption structures in the three of them respectively, three-level protection areas can be formed. Among them, the first-level protection area is the side step mounting plate 3, whose structural strength is relatively the weakest, and can quickly deform and absorb energy during a side collision of the whole vehicle, so as to release the collision force and protect the vehicle occupants.

[0059] The second-level protection area is the sill beam 2, which can achieve high-efficiency energy absorption through a multi-cavity structure, and can protect the side frame 1 through the high-strength structure formed by connecting the sill beam 2 with the side reinforcement panel 4, the inner side panel 5 and the inner sill panel 6, and reduce the extrusion of the side frame 1 before sufficient deformation. The third-level protection area is the side frame 1 of the battery pack 400. Through the multi-cavity structure therein and the fourth reinforcing rib 103 arranged horizontally, the anti-deformation ability of the side frame 1 in the Y direction (left-right direction of the whole vehicle) can be improved to form a rigid area, which is beneficial to protecting the battery pack 400 and forming a protection barrier for the battery pack 400.

[0060] The body structure of this embodiment optimizes the connection methods and respective structures of the sill beam 2, the battery pack frame, and the side step mounting plate 3, enabling the battery pack frame to also serve as a collision force transmission path. Together with the body force transmission path, it facilitates the dispersion and transmission of the collision force in the left-right and up-down directions of the vehicle, enhances the collision stability of the body structure during side collisions, and also helps avoid the problem of collision instability caused by the lack of force transmission in the lower part during the deformation of the body structure during side collisions.

[0061] In addition, this embodiment also relates to a vehicle equipped with the above-described body structure.

[0062] For the vehicle described in this embodiment, by setting the above body structure, it is beneficial to improve the side collision safety of the entire vehicle.

[0063] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vehicle body structure, characterized in that: It comprises a vehicle body frame, and a battery pack (400) located at the bottom of the vehicle body frame; The door sill beam (2) in the vehicle body frame, the battery pack frame of the battery pack (400), and the side step mounting plate (3) located on one side of the door sill beam (2) are integrally formed; The side step mounting plate (3) extends along the front-rear direction of the vehicle, and in the left-right direction of the vehicle, one side of the side step mounting plate (3) is connected to the door sill beam (2), and the other side of the side step mounting plate (3) extends toward the outside of the vehicle.

2. The vehicle body structure according to claim 1, characterized in that: The battery pack frame comprises a side frame (1) arranged side by side with the door sill beam (2); the door sill beam (2), the side step mounting plate (3) and the side frame (1) are integrally formed.

3. The vehicle body structure according to claim 2, characterized in that: The door sill beam (2), the side step mounting plate (3) and the side frame (1) are integrally formed using extruded profiles.

4. The vehicle body structure according to claim 3, characterized in that: The sill beam (2), the side step mounting plate (3) and the side frame (1) are provided with reinforcing ribs, and from a cross-section in the left-right direction of the vehicle, the sill beam (2), the side step mounting plate (3) and the side frame (1) are all separated by the corresponding reinforcing ribs to form a multi-cavity energy absorption structure.

5. The vehicle body structure according to claim 4, characterized in that: The reinforcing ribs in the side step mounting plate (3) include first reinforcing ribs (301) arranged along the vertical direction of the entire vehicle, and the side step mounting plate (3) is divided by the first reinforcing ribs (301) into a plurality of first cavities (300) arranged in sequence along the horizontal direction of the entire vehicle.

6. The vehicle body structure according to claim 5, characterized in that: The reinforcing ribs in the threshold beam (2) include second reinforcing ribs (201) and third reinforcing ribs (202) that are arranged in a transverse and longitudinal manner, and the second reinforcing ribs (201) and the third reinforcing ribs (202) are separated in the threshold beam (2) to form a plurality of second cavities (200).

7. The vehicle body structure according to claim 6, characterized in that: The vehicle body frame is provided with a side reinforcement plate (4), a side inner plate (5) and a side sill inner plate (6) connected to the sill beam (2); the side reinforcement plate (4) and the side sill inner plate (6) are connected to the sill beam (2) via an FDS, and the side inner plate (5) is connected to the sill beam (2) via an SPR.

8. The vehicle body structure according to claim 6, characterized in that: The reinforcing ribs in the side frame (1) include fourth reinforcing ribs (103) arranged along the left-right direction of the vehicle, and the side frame (1) is divided by the fourth reinforcing ribs (103) into a plurality of third cavities (100) arranged in sequence along the up-down direction of the vehicle.

9. The vehicle body structure according to claim 8, characterized in that: The side frame (1) comprises a frame portion (101) and a connecting portion (102) connected to the frame portion (101), wherein the connecting portion (102) is connected to the door sill beam (2); In the left-right direction of the vehicle, along the direction pointing to the frame portion (101), the thickness of the connection portion (102) is gradually increased along the up-down direction of the vehicle.

10. A vehicle, characterized in that: The vehicle is provided with the vehicle body structure according to any one of claims 1 to 9.

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