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 side pedal mounting plate is arranged on the side part of the battery pack, extends in the front-back direction of the whole vehicle, and is positioned on a battery pack frame of the battery pack; in the left-right direction of the whole vehicle, one side of the side pedal mounting plate is connected to the battery pack frame, and the other side of the side pedal mounting plate extends to the outer side of a doorsill beam in the vehicle body framework. According to the vehicle body structure, the side pedal mounting plate extending to the outer side of the doorsill beam is integrated at the side part of the battery pack frame, so that the side pedal mounting plate and the battery pack frame can form another force transmission path below the vehicle body framework when the whole vehicle is in side collision, and the battery pack frame can be fully utilized for transmitting and absorbing side collision energy; and the situation that the vehicle body structure is unstable during side collision is avoided, so that 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] In order to evaluate the collision safety of electric vehicles, a series of collision tests are usually carried out, including frontal collision, side collision, rear-end collision, etc. The results of the collision tests will record in detail the damage conditions of the vehicle, the occupant protection effect, and the safety performance of the battery, etc. According to the test results, the collision safety of electric vehicles can be objectively evaluated, and the improvement and optimization of vehicle design can be guided.

[0003] In the prior art, in an electric vehicle equipped with a battery pack, the side part of the battery pack frame is located inside the sill beam. When a side collision occurs to the whole vehicle, the battery pack has limited effect on side collision force transmission and energy absorption, and it is easy to cause insufficient force transmission due to the position of the battery pack, resulting in the instability of the vehicle body during collision, which is not conducive to improving the side collision safety of the whole vehicle. Summary of the Utility Model

[0004] In view of this, the utility model aims to provide a vehicle body structure to improve the side collision safety of the whole vehicle.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A vehicle body structure includes a vehicle body frame and a battery pack located at the bottom of the vehicle body frame; a side step mounting plate is provided on the side of the battery pack, the side step mounting plate extends along the front-back direction of the whole vehicle, and the side step mounting plate is located on the battery pack frame of the battery pack; in the left-right direction of the whole vehicle, one side of the side step mounting plate is connected to the battery pack frame, and the other side of the side step mounting plate extends to the outside of the sill beam in the vehicle body frame.

[0007] Further, the side step mounting plate is integrally formed on the battery pack frame, or the side step mounting plate is connected to the battery pack frame through a connecting structure.

[0008] Further, a connecting plate extending to the lower part of the sill beam is provided on the side of the battery pack frame; battery pack mounting points connected to the sill beam are provided on the connecting plate, and one side of the side step mounting plate close to the battery pack frame is connected to the connecting plate.

[0009] Further, at least the connecting plate in the side step mounting plate and the battery pack frame is made of an extruded profile.

[0010] Furthermore, reinforcing ribs are provided in the side step mounting plate and the connecting plate, and from the cross-section in the left-right direction of the whole vehicle, the side step mounting plate and the connecting plate are both separated by the corresponding reinforcing ribs to form a multi-cavity energy absorption structure.

[0011] Furthermore, the reinforcing ribs in the side step mounting plate include first reinforcing ribs arranged in the up-down direction 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 in the left-right direction of the whole vehicle.

[0012] Furthermore, the reinforcing ribs in the connecting plate include second reinforcing ribs arranged in the left-right direction of the whole vehicle, and the connecting plate is separated by the second reinforcing ribs into a plurality of second cavities arranged in sequence in the up-down direction of the whole vehicle.

[0013] Furthermore, the side step mounting plate includes a connecting portion connected to the connecting plate and an extending portion connected to the connecting portion; in the left-right direction of the whole vehicle, along the direction pointing to the connecting portion, the thickness of the extending portion gradually increases in the up-down direction of the whole vehicle, and the thickness of the connecting portion in the up-down direction of the whole vehicle is not less than the thickness of the extending portion in the up-down direction of the whole vehicle.

[0014] Furthermore, the connecting plate includes an outer portion connected to the side step mounting plate and an inner portion connected to the frame of the battery pack; the battery pack mounting point is located on the outer portion, and in the left-right direction of the whole vehicle, along the direction pointing to the frame, the thickness of the inner portion gradually increases in the up-down direction of the whole vehicle.

[0015] Compared with the prior art, the present utility model has the following advantages:

[0016] For the vehicle body structure of the present utility model, by integrating the side step mounting plate extending from the side of the battery pack frame to the outside of the sill beam, when the vehicle has a side collision, the side step mounting plate and the battery pack frame can form another force transmission path under the vehicle body skeleton, and the battery pack frame can be fully utilized to transmit and absorb the side collision energy, which helps to avoid the instability of the vehicle body structure during a side collision, thereby facilitating the improvement of the side collision safety of the whole vehicle.

[0017] Secondly, integrally forming the side step mounting plate with the battery pack frame is beneficial for the preparation of both, and can also ensure the reliability of the connection between the two. Connecting the side step mounting plate to the battery pack frame through a connection structure can increase the flexibility of the side step mounting plate setting and facilitate its maintenance and replacement. A connecting plate is provided on the side of the battery pack frame, which is beneficial for the installation of the battery pack in the vehicle body frame and also facilitates the integrated setting of the side step mounting plate on the battery pack frame. Both the battery pack frame and the side step mounting are made of extruded profiles, which helps to reduce the weight of the battery pack frame and the side step mounting plate, and is beneficial for the lightweight design of the vehicle body. At the same time, taking advantage of the better characteristics of the extruded profile to collapse and absorb energy, the collision energy absorption capacity of the side step mounting plate can also be increased.

[0018] Furthermore, the cross-sections of both the side step mounting plate and the connecting plate are multi-cavity energy absorption structures. Not only can the advantages of high strength of the multi-cavity structure be utilized to increase the structural strength of the side of the battery pack, but also the characteristics that the multi-cavity energy absorption structure can fully collapse and absorb energy during a vehicle side collision can be used to improve the energy absorption effect during a vehicle side collision. The first reinforcing ribs in the side step mounting plate are arranged along the up and down direction of the vehicle, and the first cavities are arranged in sequence along the left and right direction of the vehicle, which can make there be no transverse (i.e., the left and right direction of the vehicle) reinforcing ribs in the side step mounting plate, and at the same time, it is also a single-cavity structure in the Z direction (i.e., the up and down direction of the vehicle) of the vehicle, enabling the side step mounting plate to become an energy absorption area during a vehicle side collision, and it can gradually collapse from the outside to the inside during a side collision, which is beneficial for realizing effective side collision energy absorption.

[0019] In addition, the second reinforcing ribs in the connecting plate are arranged along the left and right direction of the vehicle, and the second cavities are arranged in sequence along the up and down direction of the vehicle, which can make there be transverse (i.e., the left and right direction of the vehicle) reinforcing ribs in the connecting plate, and at the same time, it is also a multi- (i.e., the up and down direction of the vehicle) cavity structure in the Z direction of the vehicle, enabling the connecting plate to become a rigid area during a vehicle side collision relative to the side step mounting plate, and it can better protect the battery pack during a side collision. Through the gradually increasing setting of the thickness of the outer extension part, the overall stiffness of the outer extension part can be utilized to gradually increase from the outside to the inside, and a step-by-step collapse and energy absorption can be formed at the outer position of the side step mounting plate during a vehicle side collision, which helps to improve the side collision energy absorption effect.

[0020] In addition, making the thickness of the inner part of the connecting plate gradually increase can, on the one hand, ensure the reliability of the connection between the connecting plate and the frame in the battery pack, and on the other hand, it can also ensure the stiffness of the root position where the connecting plate is connected to the frame during a vehicle side collision, making this position not easy to break, and enabling the collision force to be effectively dispersed and transmitted along the battery pack frame.

[0021] In addition, another object of the present invention is to provide a vehicle, in which the vehicle body structure as described above is provided.

[0022] For the vehicle of the present invention, by providing the vehicle body structure as above, it is beneficial to improve the safety of the whole vehicle during a side collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings forming a part of this utility model are used to provide a further understanding of the utility model. The schematic embodiments and descriptions thereof of the utility model are used to explain the utility model and do not constitute an improper limitation to the utility model. In the drawings:

[0024] Figure 1 is a schematic structural view of the vehicle body structure according to an embodiment of the utility model from one perspective;

[0025] Figure 2 is a schematic structural view of the vehicle body structure according to an embodiment of the utility model from another perspective;

[0026] Figure 3 is Figure 1 a cross-sectional view taken along the A-A direction in;

[0027] Figure 4 is a schematic structural view of the frame, connecting plate and side wall mounting plate according to an embodiment of the utility model.

[0028] Description of the reference numerals in the drawings:

[0029] 1, sill beam; 2, side wall panel; 3, battery pack frame; 4, side step mounting plate; 5, connecting plate; 6, connecting bracket;

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

[0031] 201, front door opening; 202, rear door opening;

[0032] 301, fourth reinforcing rib;

[0033] 401, connecting part; 402, extending part; 403, first reinforcing rib;

[0034] 501, outer part; 502, inner part; 503, second reinforcing rib; 504, third reinforcing rib; 505, battery pack mounting point. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] 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.

[0036] 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 thus 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 should not be construed as indicating or implying relative importance.

[0037] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", "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 elements. 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.

[0038] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0039] This embodiment relates to a vehicle body structure to solve the problem of poor safety of a vehicle body structure provided with a battery pack during a side collision.

[0040] In terms of the overall composition, the vehicle body structure in this embodiment includes a vehicle body frame and a battery pack located at the bottom of the vehicle body frame. A side step mounting plate 4 is provided on the side of the battery pack. The side step mounting plate 4 extends along the front-rear direction of the whole vehicle, and the side step mounting plate 4 is located on the battery pack frame 3 of the battery pack. In the left-right direction of the whole vehicle, one side of the side step mounting plate 4 is connected to the battery pack frame 3, and the other side of the side step mounting plate 4 extends to the outside of the sill beam 1 in the vehicle body frame.

[0041] For the vehicle body structure described in this embodiment, through the side step mounting plate 4 integrally extended from the side of the battery pack frame 3 to the outside of the sill beam 1, when the vehicle is side-collided, the side step mounting plate 4 and the battery pack frame 3 can form another force transmission path below the vehicle body frame, and the battery pack frame 3 can be fully utilized to transmit and absorb side collision energy, which helps to avoid the occurrence of instability of the vehicle body structure during a side collision, thereby facilitating the improvement of the side collision safety of the whole vehicle.

[0042] Based on the above overall introduction, an exemplary structure of the vehicle body structure in this embodiment is as Figures 1 to 3As shown in the figure. Considering the symmetrical arrangement of the left and right sides of the vehicle body structure, only a part of the structure on the left side of the vehicle body is schematically shown in the figure. The sill beam 1 is located at the bottom of the side wall panel 2. The side step mounting plate 4 extends along the front-rear direction of the whole vehicle and is arranged corresponding to the bottoms of the front door opening 201 and the rear door opening 202. In this way, the length of the side step mounting plate 4 can be increased, which is beneficial to meeting the use requirements. The side step mounting plate 4 in this embodiment serves as the mounting skeleton of the side step and can be used to mount side step components such as decorative plates, so as to improve the convenience of passengers getting on and off the vehicle and is beneficial to improving the protection effect on the vehicle body.

[0043] Referring to Figures 1 to 3 As shown in the figure, in this embodiment, the battery pack frame 3 is arranged along the up-down direction of the whole vehicle on the inner side border of the sill beam 1 and extends along the front-rear direction of the whole vehicle. In some embodiments, the side step mounting plate 4 is integrally formed on the battery pack frame 3. In this way, it is beneficial to the preparation of both the side step mounting plate 4 and the battery pack frame 3, and the reliability of the connection between the side step mounting plate 4 and the battery pack frame 3 can also be ensured.

[0044] In other embodiments, the side step mounting plate 4 is connected to the battery pack frame 3 through a connection structure. Here, making the side step mounting plate 4 connected to the battery pack frame 3 through a connection structure can increase the flexibility of the setting of the side step mounting plate 4 and facilitate its repair and replacement. Specifically, the connection structure generally can adopt a screw connection structure, which has a simple structure, is convenient for loading and unloading and has a good connection effect.

[0045] As a preferred embodiment, as Figure 3 and Figure 4 As shown in the figure, a connecting plate 5 extending to the lower part of the sill beam 1 is provided on the side of the battery pack frame 3. A battery pack mounting point 505 connected to the sill beam 1 is provided on the connecting plate 5, and the side of the side step mounting plate 4 close to the battery pack frame 3 is connected to the connecting plate 5. The arrangement of the connecting plate 5 on the side of the battery pack frame 3 is beneficial to the installation of the battery pack in the vehicle body skeleton and is also convenient for the integrated setting of the side step mounting plate 4 on the battery pack frame 3. Among them, the battery pack mounting point 505 can be a mounting hole, which has a simple structure, is easy to process and can be connected to the sill beam 1 through a threaded structure. Of course, in addition to using a mounting hole, other structural forms that are beneficial to realizing the connection can also be adopted.

[0046] In this embodiment, the side step mounting plate 4, and at least the connecting plate 5 in the battery pack frame 3 are made of extruded profiles. Preferably, both the battery pack frame 3 and the side step mounting plate 4 are made of extruded profiles. In this way, it helps to reduce the weight of the battery pack frame 3, the side step mounting plate 4 and the connecting plate 5, which is beneficial to the lightweight design of the vehicle body. At the same time, taking advantage of the good energy absorption characteristics of the extruded profile during collapse, the collision energy absorption capacity of the side step mounting plate 4 can also be increased.

[0047] In specific implementation, the battery pack frame 3 and the side step mounting plate 4 in this embodiment can specifically adopt aluminum alloy extruded profiles. Aluminum alloy extruded profiles have the advantages of high strength, light weight, good corrosion resistance, etc., which is conducive to improving the service performance of the battery pack frame 3 and the side step mounting plate 4.

[0048] In some embodiments, as Figure 4 shown, the connecting plate 5 can be one extending in the longitudinal direction of the vehicle. This is conducive to increasing the connection length and connection strength between the battery pack frame 3 and the side step mounting plate 4. In other embodiments, the connecting plates 5 can also be multiple arranged at intervals in the longitudinal direction of the vehicle. The cooperation of multiple connecting plates 5 is conducive to ensuring the connection reliability between the battery pack frame 3 and the side step mounting plate 4, and is also conducive to reducing the weight of the battery pack frame 3, which is beneficial to the lightweight design of the vehicle body structure.

[0049] As Figure 3 shown, there is generally a gap between the bottom of the connecting plate 5 and the sill beam 1. Therefore, a connecting bracket 6 can usually be provided between the connecting plate 5 and the sill beam 1, and the connecting plate 5 and the sill beam 1 are connected together via the connecting bracket 6. In specific implementation, the connecting plate 5 is connected to the bottom of the connecting bracket 6 through a screwing structure, and the top of the connecting bracket 6 is connected to the bottom of the sill beam 1 through a screwing structure.

[0050] To further improve the energy absorption effect during side impact, as Figure 3 and Figure 4 shown, the side step mounting plate 4 includes a connecting portion 401 connected to the connecting plate 5 and an extension portion 402 connected to the connecting portion 401. In the left-right direction of the vehicle, along the direction pointing to the connecting portion 401 (i.e., the direction of the arrow in Figure 3 ), the thickness of the extension portion 402 gradually increases in the up-down direction of the vehicle, and the thickness of the connecting portion 401 in the up-down direction of the vehicle is not less than the thickness of the extension portion 402 in the up-down direction of the vehicle. By gradually increasing the thickness of the extension portion 402, the overall stiffness of the extension portion 402 can be utilized to gradually increase from the outside to the inside, so that a step-by-step collapse energy absorption is formed at the outer position of the side step mounting plate 4 during side impact of the vehicle, which helps to improve the side impact energy absorption effect.

[0051] In some embodiments, the top surfaces of the extension portion 402 and the connecting portion 401 in this embodiment are in the same plane, and the bottom surface of the extension portion 402 is inclined upward along the direction from the inside of the vehicle to the outside of the vehicle, so that the distance between the top surface and the bottom surface of the extension portion 402 gradually increases along the direction pointing to the connecting portion 401 (i.e., the direction of the arrow in Figure 3 ). In addition, in specific implementation, the shape of the extension portion 402 can be adjusted adaptively according to requirements.

[0052] Referring to Figure 3 andFigure 4 As shown in Figure 4 , the connecting plate 5 includes an outer part 501 connected to the side step mounting plate 4 and an inner part 502 connected to the border in the battery pack frame 3. The battery pack mounting point 505 is located on the outer part 501, and in the left - right direction of the whole vehicle, along the direction pointing to the border (i.e., Figure 3 the arrow direction in Figure 3 ), the thickness of the inner part 502 increases gradually in the up - down direction of the whole vehicle. Here, the inner part 502 is specifically connected to the middle and bottom in the height direction of the border.

[0053] In this embodiment, the thickness of the inner part 502 in the connecting plate 5 is set to increase gradually. On the one hand, it can ensure the reliability of the connection between the connecting plate 5 and the border in the battery pack frame 3. On the other hand, when a side collision occurs to the whole vehicle, it can also ensure the stiffness of the root position where the connecting plate 5 is connected to the border, so that this position is not easily broken, and the collision force can be effectively dispersed and transmitted along the battery pack frame 3.

[0054] In terms of the detailed structure, the top surface of the inner part 502 is inclined upward along the direction pointing to the border (i.e., Figure 3 the arrow direction in Figure 3 ), and the bottom surface of the inner part 502 is inclined downward along the direction pointing to the border. In this way, the distance between the top surface and the bottom surface of the inner part 502 gradually increases along the direction pointing to the connecting part 401.

[0055] As a preferred implementation manner, reinforcing ribs are provided in the side step mounting plate 4 and the connecting plate 5. From the cross - section in the left - right direction of the whole vehicle, both the side step mounting plate 4 and the connecting plate 5 are separated by the corresponding reinforcing ribs to form a multi - cavity energy - absorbing structure. Here, by forming the multi - cavity energy - absorbing structure, not only can the advantages of high strength of the multi - cavity structure be utilized to increase the structural strength of the side of the battery pack, but also the characteristics that the multi - cavity energy - absorbing structure can fully collapse and absorb energy during a side collision of the whole vehicle can be utilized to improve the energy - absorbing effect during a side collision of the vehicle body.

[0056] In terms of the detailed structure, as shown in Figure 3 and Figure 4 As shown in Figure 3 and Figure 4 , the reinforcing ribs in the side step mounting plate 4 include the first reinforcing ribs 403 arranged in the up - down direction of the whole vehicle, and the side step mounting plate 4 is separated by the first reinforcing ribs 403 into a plurality of first cavities 100 arranged in sequence in the left - right direction of the whole vehicle. The first reinforcing ribs 403 in the side step mounting plate 4 are arranged in the up - down direction of the whole vehicle, and the first cavities 100 are arranged in sequence in the left - right direction of the whole vehicle, which can make there be no transverse (i.e., left - right direction of the whole vehicle) reinforcing ribs in the side step mounting plate 4. At the same time, it is also a single - cavity structure in the Z - direction (i.e., up - down direction of the whole vehicle) of the whole vehicle, which can make the side step mounting plate 4 become an energy - absorbing area during a side collision of the whole vehicle, and can gradually collapse from the outside to the inside during a side collision, which is beneficial to realizing effective side - collision energy absorption.

[0057] During specific implementation, the number of the first reinforcing ribs 403 can beFigure 3 Among the three shown in [reference], of course, in some embodiments, the quantity and position of the first reinforcing rib 403 can also be adaptively adjusted according to the usage requirements.

[0058] Still referring to Figure 3 and Figure 4 as shown in [reference], the reinforcing ribs in the connecting plate 5 include second reinforcing ribs 503 arranged along the left - right direction of the whole vehicle, and a plurality of second cavities 200 arranged in sequence along the up - down direction of the whole vehicle are separated by the second reinforcing ribs 503 in the connecting plate 5. The second reinforcing ribs 503 in the connecting plate 5 are arranged along the left - right direction of the whole vehicle, and the second cavities 200 are arranged in sequence along the up - down direction of the whole vehicle, which can make the connecting plate 5 have transverse (i.e., the left - right direction of the whole vehicle) reinforcing ribs, and at the same time, it is also a multi - cavity structure in the Z - direction (i.e., the up - down direction of the whole vehicle) of the whole vehicle. It can make the connecting plate 5 become a rigid area during the side impact of the whole vehicle and can better protect the battery pack during the side impact.

[0059] In terms of the detailed structure, the second reinforcing rib 503 can be one arranged in the connecting plate 5 to form two cavities in the upper and lower parts in the connecting plate 5. Further, a third reinforcing rib 504 arranged along the up - down direction of the whole vehicle can also be arranged in the connecting plate 5. The third reinforcing rib 504 is located between the outer part 501 and the inner part 502 to separate the two. At the same time, the third reinforcing rib 504 can also intersect with the second reinforcing rib 503 to further divide the two second cavities 200 into four cavities. The multiple cavities form a stacked cavity structure in both the height direction and the width direction of the whole vehicle, further improving the service performance of the connecting plate 5 as a rigid area, and also facilitating the absorption and transmission effect of the connecting plate 5 on the collision force.

[0060] As a preferred embodiment, a fourth reinforcing rib 301 arranged along the left - right direction of the whole vehicle is also provided in the frame, and a plurality of third cavities 300 arranged in sequence along the up - down direction of the whole vehicle are separated by the fourth reinforcing rib 301 in the frame. Through the stacked arrangement of the multiple third cavities 300 in the Z - direction (i.e., the up - down direction of the whole vehicle) of the whole vehicle, the battery pack can also be better protected during the side impact. Among them, to improve the force - transmission effect, some of the second reinforcing ribs 503 in the connecting plate 5 can also be connected to some of the fourth reinforcing ribs 301. At this time, the collision force can be guided to be dispersed and transmitted along the direction of the reinforcing ribs.

[0061] In the vehicle body structure of this embodiment, by integrally arranging a side step mounting plate 4 and a connecting plate 5 on the battery pack frame 3, with the side step mounting plate 4 serving as an energy absorption area and the connecting plate 5 serving as a rigid connection area, the battery pack frame 3 can also serve as a force transmission path during side collisions and cooperate with the force transmission path on the vehicle body structure, which is beneficial to improving the collision safety and stability of the vehicle body structure. Also, through the cooperation of the first cavity 100 formed in the side step mounting plate 4, the second cavity 200 formed in the connecting plate 5, and the third cavity 300 in the frame, an energy absorption structure in the vehicle height direction and the left-right direction can be formed, thereby further improving the safety and stability of the vehicle body structure during side collisions.

[0062] In addition, this embodiment also relates to a vehicle, in which the above-mentioned vehicle body structure is provided.

[0063] In the vehicle of this embodiment, by setting the above vehicle body structure, it is beneficial to improve the safety of the whole vehicle during side collisions.

[0064] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vehicle body structure, characterized in that: It includes a vehicle body frame, and a battery pack located at the bottom of the vehicle body frame; A side step mounting plate (4) is provided on the side of the battery pack, the side step mounting plate (4) extends in the front-rear direction of the whole vehicle, and the side step mounting plate (4) is located on the battery pack frame (3) of the battery pack; In the left-right direction of the vehicle, one side of the side step mounting plate (4) is connected to the battery pack frame (3), and the other side of the side step mounting plate (4) extends to the outside of the door sill beam (1) in the vehicle body frame.

2. The vehicle body structure according to claim 1, characterized in that: The side step mounting plate (4) is integrally formed on the battery pack frame (3), or the side step mounting plate (4) is connected to the battery pack frame (3) via a connecting structure.

3. The vehicle body structure according to claim 2, characterized in that: A connecting plate (5) extending to below the door sill beam (1) is provided on the side of the battery pack frame (3); The connecting plate (5) is provided with a battery pack mounting point (505) connected to the door sill beam (1), and the side of the side step mounting plate (4) close to the battery pack frame (3) is connected to the connecting plate (5).

4. The vehicle body structure according to claim 3, characterized in that: The side step mounting plate (4) and at least the connecting plate (5) in the battery pack frame (3) are made of extruded profiles.

5. The vehicle body structure according to claim 4, characterized in that: The side step mounting plate (4) and the connecting plate (5) are provided with reinforcing ribs, and from the perspective of a cross section in the left-right direction of the vehicle, the side step mounting plate (4) and the connecting plate (5) are separated by the corresponding reinforcing ribs to form a multi-cavity energy absorption structure.

6. The vehicle body structure according to claim 5, characterized in that: The reinforcing ribs in the side step mounting plate (4) include first reinforcing ribs (403) arranged along the vertical direction of the entire vehicle, and the side step mounting plate (4) is divided by the first reinforcing ribs (403) into a plurality of first cavities (100) arranged in sequence along the horizontal direction of the entire vehicle.

7. The vehicle body structure according to claim 6, characterized in that: The reinforcing ribs in the connecting plate (5) include second reinforcing ribs (503) arranged along the left-right direction of the vehicle, and the connecting plate (5) is divided by the second reinforcing ribs (503) into a plurality of second cavities (200) arranged in sequence along the up-down direction of the vehicle.

8. The vehicle body structure according to claim 4, characterized in that: The side step mounting plate (4) comprises a connecting portion (401) connected to the connecting plate (5), and an extension portion (402) connected to the connecting portion (401); In the left-right direction of the vehicle, along the direction pointing to the connecting portion (401), the thickness of the extension portion (402) along the upper and lower direction of the vehicle is gradually increased, and the thickness of the connecting portion (401) along the upper and lower direction of the vehicle is not less than the thickness of the extension portion (402) along the upper and lower direction of the vehicle.

9. The vehicle body structure according to claim 4, characterized in that: The connecting plate (5) comprises an outer portion (501) connected to the side step mounting plate (4), and an inner portion (502) connected to the frame in the battery pack frame (3); The battery pack installation point (505) is located on the outer portion (501), and in the left-right direction of the vehicle, along the direction pointing to the frame, the thickness of the inner portion (502) is gradually increased along the upper-lower 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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