Vehicle body structure and vehicle provided with same

Abstract

The utility model relates to the technical field of vehicles, and provides a vehicle body structure and a vehicle provided with the vehicle body structure, and the vehicle body structure comprises a frame structure located below a front floor panel; the frame structure comprises frame longitudinal beams arranged on the left side and the right side respectively, a front cross beam connected with the front ends of the frame longitudinal beams on the two sides, a rear cross beam connected with the rear ends of the frame longitudinal beams on the two sides, and rear longitudinal beams arranged on the left side and the right side respectively. Each side frame longitudinal beam is located on the inner side of the threshold beam on the same side, the front cross beam and the rear cross beam are connected between the threshold beams on the two sides, the front ends of the rear longitudinal beams on the two sides are connected with the rear cross beam, the rear end of each side rear longitudinal beam is connected with the rear end of the threshold beam on the same side, and the front cross beam is provided with an auxiliary frame installation point used for installing a front auxiliary frame. The front auxiliary frame can be prevented from moving backwards when a vehicle is in direct collision, meanwhile, the contribution degree of the front auxiliary frame participating in collision force transmission can be increased, and the collision safety of the vehicle can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, especially a kind of vehicle body structure and vehicle with it. BACKGROUND

[0002] In the existing vehicle body, especially for the vehicle body structure of new energy vehicle type provided with battery pack, battery pack is mostly arranged at the bottom of front floor, and front subframe is also usually arranged at the bottom of front engine compartment. At present, the rear part of front subframe is generally only installed on the torsion box at the rear part of front engine compartment, which not only makes the rear mounting point of front subframe not on the main force transmission path of vehicle body, but also makes the contribution of front subframe to collision force transmission lower when vehicle collision, especially frontal collision. At the same time, due to the limitation of torsion box structure, the rear mounting point of front subframe is also prone to pull out when vehicle collision, which leads to rearward movement of front subframe and collision with battery pack, thereby being not conducive to the improvement of vehicle collision safety. SUMMARY

[0003] Therefore, the utility model aims at providing a vehicle body structure to improve the collision safety of vehicle.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A vehicle body structure comprises a frame structure located below a front floor panel.

[0006] The frame structure comprises frame longitudinal beams arranged on left and right sides, a front cross beam connected to the front ends of the frame longitudinal beams on the left and right sides, a rear cross beam connected to the rear ends of the frame longitudinal beams on the left and right sides, and rear longitudinal beams arranged on the left and right sides.

[0007] Each of the frame longitudinal beams is located on the inner side of a same side rocker beam, the front cross beam and the rear cross beam are connected between the rocker beams on the left and right sides, the front ends of the rear longitudinal beams on the left and right sides are connected to the rear cross beam, the rear ends of each of the rear longitudinal beams are connected to the rear ends of the same side rocker beam, and the front cross beam is provided with a subframe mounting point for mounting a front subframe.

[0008] Further, the front cross beam comprises a cross beam lower plate and a cross beam upper plate connected by buckling, and a cross beam cavity is formed between the cross beam upper plate and the cross beam lower plate.

[0009] The subframe mounting point comprises a connecting sleeve connected between the cross beam upper plate and the cross beam lower plate, and the front subframe is connected in the connecting sleeve by fasteners.

[0010] Further, the front cross beam is located below the rear sections of front engine compartment longitudinal beams on the left and right sides and connected to the rear sections of the front engine compartment longitudinal beams on the left and right sides.

[0011] The left and right ends of the front cross beam are bifurcated, and each side of the first connecting arm is connected with the same side of the rocker beam, and each side of the second connecting arm is connected with the same side of the torsion box.

[0012] Further, the connecting points between the front cross beam, the rocker beam, the rear section of the front cabin longitudinal beam and the torsion box on the same side form a triangle.

[0013] Further, from the perspective of the vehicle in the up-down direction, the middle part of the front cross beam is arched forward relative to the two ends.

[0014] Further, the two rear longitudinal beams are gradually inclined outward from front to rear in the front-rear direction of the vehicle; and / or,

[0015] The front end of each side of the rear longitudinal beam is connected with the same side of the frame longitudinal beam in the front-rear direction of the vehicle.

[0016] Further, it also includes a front floor undercross beam located below the front floor panel;

[0017] The front floor undercross beam is connected between the two rocker beams and above the two frame longitudinal beams, and the two frame longitudinal beams and the front floor undercross beam are connected together.

[0018] Further, the front floor undercross beam is a plurality of beams arranged in the front-rear direction of the vehicle, and each of the front floor undercross beams is connected with the two frame longitudinal beams; and / or,

[0019] The front floor panel is provided with a seat mounting bracket above the front floor panel corresponding to the front floor undercross beam, and the seat mounting bracket is connected to the front floor panel.

[0020] Further, the front cross beam, the rear cross beam and the two frame longitudinal beams define a battery pack mounting area in the frame structure, and at least the two frame longitudinal beams are provided with battery pack mounting points.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] The vehicle body structure, through the frame structure arranged below the front floor panel, makes the rear part of the front subframe installed on the frame structure, and the rear part of the frame structure is provided with a rear longitudinal beam, so that the frame structure can block the rear movement of the front subframe in the vehicle frontal collision, and the subframe mounting point is arranged on the front cross beam to reduce the risk of tearing off of the subframe mounting point in the collision, and meanwhile, the rear force transmission channel formed by the frame structure can help the collision force on the front subframe to be fully transmitted to the rear part of the rocker beam, so that the contribution of the front subframe to the collision force transmission is increased, thereby improving the vehicle collision safety.

[0023] In addition, the front cross beam comprises a buckle-connected cross beam upper plate and cross beam lower plate, and a cross beam cavity is formed, which is conducive to the preparation of the front cross beam, and the cavity structure has high strength, so that the structural strength of the front cross beam is ensured, and the structural strength of the subframe mounting point is also improved by arranging a connecting sleeve in the front cross beam and connecting the front subframe in the connecting sleeve through fasteners, thereby reducing the risk of tearing of the subframe mounting point in the collision.

[0024] Secondly, the front cross beam is connected with the rear section of the front engine compartment longitudinal beam, so that the frame structure and the front engine compartment longitudinal beam are connected to form a force transmission channel, which helps to increase the collision force transmission dispersion effect. The end of the front cross beam is bifurcated and connected with the rocker beam and the torsion box respectively, which can increase the reliability of the connection between the front cross beam and the surrounding components in the vehicle body and improve the stability of the frame structure in the vehicle body. The connecting points between the front cross beam and the rocker beam, the rear section of the front engine compartment longitudinal beam and the torsion box on the same side form a triangle, so that the three connecting points form a triangular stable structure, which can improve the structural strength of the A-pillar area in front of the rocker beam, and the collision force can be fully transmitted to the rear through the rocker beam and the front engine compartment longitudinal beam in a small overlap collision, which helps to reduce the deformation of the A-pillar and improve the safety of the passenger compartment.

[0025] Furthermore, the middle part of the front cross beam is arched forward, which can increase the structural strength of the front cross beam itself and is also conducive to the transmission of the collision force to the rocker beams on both sides. The rear longitudinal beams on both sides are outwardly inclined from front to rear, which is conducive to the smooth transmission of the collision force to the rear end of the rocker beam and can improve the collision force transmission dispersion effect. The front end of the rear longitudinal beam is connected with the frame longitudinal beam, so that a relatively continuous longitudinal force transmission channel is formed between the frame longitudinal beam and the rear longitudinal beam, which helps to improve the collision force transmission effect.

[0026] Meanwhile, by arranging the front floor under cross beam and connecting it with the two side frame longitudinal beams, on the one hand, the reliability of the frame structure arranged in the vehicle body can be increased, and on the other hand, the force transmission channel between the frame structure and the rocker beam can be increased, which helps to improve the collision force transmission dispersion effect. The front floor under cross beam arranged in a spaced manner can further increase the reliability of the frame structure arrangement, increase the force transmission channel, improve the collision force transmission dispersion effect, and meanwhile, the multiple front floor under cross beams also help to improve the rigidity of the middle part of the vehicle body. The seat mounting bracket arranged above the front floor panel and corresponding to the front floor under cross beam can meet the needs of vehicle seat installation, and meanwhile, the seat cross beam arranged above the front floor panel is omitted, which helps to reduce the weight and cost of the vehicle body, and is also beneficial to the arrangement of the wire harness and air conditioning duct in the vehicle cabin.

[0027] In addition, the battery pack mounting area is formed in the frame structure, and the battery pack mounting point is arranged on the frame structure, so that the front subframe and the battery pack are effectively associated together in structure by the mounting of the battery pack on the frame structure and the connection of the front part of the frame structure with the front subframe, so that the continuous force transmission channel is provided, the collision force is effectively transmitted along the front subframe and the battery pack, and the rigidity of the vehicle body structure is improved by the connection of the frame of the front subframe and the battery pack, thereby improving the safety of the vehicle.

[0028] Another purpose of the utility model lies in providing a vehicle, wherein the vehicle is provided with the vehicle body structure as described above.

[0029] The vehicle has the same beneficial effects as the vehicle body structure, and thus will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0030] The drawings constituting a part of the utility model are used to provide further understanding of the utility model, and the schematic embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:

[0031] Figure 1 The drawing is a schematic view of the vehicle body structure described in the embodiments of the utility model;

[0032] Figure 2 The drawing is a schematic view of the vehicle body structure described in the embodiments of the utility model; Figure 1 The drawing is a schematic view of the vehicle body structure described in the embodiments of the utility model;

[0033] Figure 3 The drawing is a schematic view of the vehicle body structure described in the embodiments of the utility model; Figure 2 The drawing is a schematic view of the vehicle body structure described in the embodiments of the utility model;

[0034] Figure 4 The drawing is a schematic view of the frame structure described in the embodiments of the utility model;

[0035] Figure 5The structure schematic view of the front cross beam is described in the embodiment of the utility model.

[0036] Figure 6 For Figure 5 The cross-sectional view of A-A position in the middle;

[0037] Figure 7 The setting schematic view of the seat mounting support is described in the embodiment of the utility model.

[0038] Figure 8 For Figure 7 The local enlarged view of B part in the middle;

[0039] Mark explanation:

[0040] 1, front floor panel; 2, rocker; 3, front subframe; 4, front engine compartment longitudinal beam; 5, rear floor longitudinal beam; 6, front floor lower cross beam; 7, torsion box; 8, seat mounting support; 9, connecting sleeve; 10, frame structure;

[0041] 1a, middle channel; 4a, rear section of front engine compartment longitudinal beam; 101, frame longitudinal beam; 102, front cross beam; 103, rear cross beam; 104, rear longitudinal beam;

[0042] 1021, cross beam lower plate; 1022, cross beam upper plate; 102a, first connecting arm; 102b, second connecting arm;

[0043] M, subframe mounting point; D, front cross beam and rocker connecting point; E, front cross beam and torsion box connecting point; G, front cross beam and rear section of front engine compartment longitudinal beam connecting point; S, battery pack mounting area; Q, cross beam cavity. Specific implementation

[0044] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0045] In the following description, specific details are set forth in order to provide a thorough understanding of embodiments of the application. However, persons of ordinary skill in the art will readily recognize that embodiments of the application can be practiced without some or all of the specific details set forth herein. In other instances, well-known structures, circuits, and processes have not been described in detail in order to not unnecessarily obscure aspects of the application.

[0046] In the description of the utility model, it is necessary to explain that if the terms indicating the orientation or position relationship such as ''up'', ''down'', ''inner'', ''outer'' appear, it is based on the orientation or position relationship shown in the drawing, and it is only for the convenience of describing the utility model and simplifying the description, and therefore it cannot be understood as the limitation of the utility model. In addition, if the terms such as ''first'', ''second'' appear, they are also only for the description purpose, and cannot be understood as indicating or implying relative importance.

[0047] In addition, in the description of the utility model, unless otherwise explicitly limited, the connecting structure of the components in the art can be connected. Moreover, the terms ''installation'', ''connection'', ''connection'' and ''connecting piece'' should be understood broadly. For example, it can be fixedly connected, and can also be detachably connected or integrally connected. It can be mechanically connected, and can also be electrically connected. It can be directly connected, and can also be indirectly connected through an intermediate medium. It can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with the specific situation.

[0048] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0049] Embodiment one

[0050] The embodiment relates to a vehicle body structure, which is suitable for a new energy vehicle model provided with a battery pack, such as a pure electric vehicle model or a hybrid vehicle model, and the vehicle body structure can also improve the safety of vehicle collision through the design.

[0051] Overall structure, in combination with Figures 1 to 4 The vehicle body structure of the embodiment comprises a frame structure 10 located below the front floor panel 1.

[0052] The frame structure 10 comprises frame longitudinal beams 101 arranged on the left and right sides, a front cross beam 102 connected to the front ends of the two side frame longitudinal beams 101, a rear cross beam 103 connected to the rear ends of the two side frame longitudinal beams 101, and rear longitudinal beams 104 arranged on the left and right sides.

[0053] Each side frame longitudinal beam 101 is located on the inner side of the same side rocker beam 2, the front cross beam 102 and the rear cross beam 103 are connected between the two side rocker beams 2, the front ends of the two side rear longitudinal beams 104 are connected to the rear cross beam 103, the rear ends of each side rear longitudinal beam 104 are connected to the rear ends of the same side rocker beam 2, and a subframe mounting point m for mounting the front subframe 3 is also arranged on the front cross beam 102.

[0054] At this time, as arranged above, by arranging the frame structure 10 below the front floor panel 1, mounting the rear part of the front subframe 3 on the front cross beam 102 in the frame structure 10, and arranging the rear longitudinal beam 104 connected with the rear end of the rocker beam 2 at the rear part of the frame structure 10, the embodiment can block the rear movement of the front subframe 3 by the frame structure 10 in the vehicle frontal crash, and can also reduce the risk of tearing of the rear subframe mounting point m in the crash by arranging the subframe mounting point m on the front cross beam 102, while the embodiment can also use the rear force transmission channel formed by the frame structure 10 to fully transmit the crash force on the front subframe 3 to the rear part of the rocker beam 2, thereby helping to increase the contribution of the front subframe 3 to the crash force transmission, and achieving the effect of improving the crash safety of the vehicle.

[0055] Based on the overall introduction above, specifically, in the vehicle body structure of the embodiment, the front floor panel 1, the rocker beams 2 on the left and right sides of the front floor panel 1, and the front subframe 3 at the bottom of the front engine compartment, etc. can all use the conventional structure in the existing vehicle body, and the connection between the rocker beams 2 on the left and right sides and the front floor panel 1, and the mounting of the front part and the middle part of the front subframe 3 on the front engine compartment longitudinal beam 4 can also refer to the related connection and mounting methods in the existing vehicle body, which will not be described here.

[0056] In the embodiment, as shown in Figure 5 and Figure 6 as a preferred implementation form, the front cross beam 102 in the frame structure 10 can include a cross beam lower plate 1021 and a cross beam upper plate 1022 connected by buckling, and a cross beam cavity Q is formed between the cross beam upper plate 1022 and the cross beam lower plate 1021. At the same time, the subframe mounting point m also specifically includes a connecting sleeve 9 connected between the cross beam upper plate 1022 and the cross beam lower plate 1021, and the front subframe 3 can be connected in the connecting sleeve 9 by fasteners.

[0057] At this time, the front cross beam 102 includes the cross beam upper plate 1022 and the cross beam lower plate 1021 connected by buckling, and forms the cross beam cavity Q, which is conducive to the preparation of the front cross beam 102, and can also use the cavity structure with high strength to ensure the structural strength of the front cross beam 102. By arranging the connecting sleeve 9 in the front cross beam 102 and connecting the rear part of the front subframe 3 in the connecting sleeve 9 by fasteners, it is obvious that it can also improve the structural strength of the subframe mounting point m, and further reduce the risk of tearing of the subframe mounting point m in the crash.

[0058] In specific implementation, as a preferred exemplary implementation form, the connecting sleeve 9 can be provided with internal threads, and the fastener can be a bolt screwed with the connecting sleeve 9. In addition, in order to ensure the reliability of the connection between the rear part of the front subframe 3 and the front cross beam 102, as shown inFigure 5 As shown, the subframe mounting points m on the left and right sides can be multiple, such as two, arranged at intervals, and each subframe mounting point m can adopt the same structure.

[0059] In this embodiment, it remains as follows Figure 2 and Figure 3 As shown, the aforementioned front crossbeam 102 is also located below the rear section 4a of the longitudinal beams of the two front engine compartments, and is connected to the rear section 4a of the longitudinal beams of the two front engine compartments. Furthermore, as a preferred embodiment, combined with... Figure 5 As shown, the left and right ends of the front crossbeam 102 are also bifurcated, and have a first connecting arm 102a and a second connecting arm 102b. The first connecting arm 102a on each side is connected to the sill beam 2 on the same side, and the second connecting arm 102b on each side is connected to the torsion box 7 on the same side.

[0060] Similar to the structure of the rear of the front engine compartment in existing vehicles, each side torsion box 7 is connected between the rear section 4a of the longitudinal beam of the typical front engine compartment and the front end of the sill beam 2.

[0061] By connecting the front crossbeam 102 of this embodiment to the rear section 4a of the front engine compartment longitudinal beam, it can be understood that this allows the frame structure 10 to connect with the front engine compartment longitudinal beam 4 to form a force transmission channel, which helps to increase the effect of collision force transmission and dispersion. At the same time, the front crossbeam 102 is forked at the end and connected to the sill beam 2 and the torsion box 7 respectively. Obviously, it can also increase the reliability of the connection between the front crossbeam 102 and the surrounding components in the vehicle body on the basis of connecting with the rear section 4a of the front engine compartment longitudinal beam, thereby improving the overall stability of the frame structure 10 in the vehicle body.

[0062] In this embodiment, since each end of the front crossbeam 102 is connected to the sill beam 2, the torsion box 7, and the rear section 4a of the forward engine compartment longitudinal beam on the same side, as a preferred embodiment, the connection points between the front crossbeam 102 and the sill beam 2, the rear section 4a of the forward engine compartment longitudinal beam, and the torsion box 7 located on the same side are... Figure 5 As shown, the connection points d between the front crossbeam and the sill beam, e between the front crossbeam and the torsion box, and g between the front crossbeam and the rear section of the front engine compartment longitudinal beam can form a triangle.

[0063] This makes the connection points between the front crossbeam 102 and the sill beam 2, the rear section 4a of the front engine compartment longitudinal beam, and the torsion box 7 form a triangle. This allows the three connection points to form a triangular stable structure, which can improve the structural strength of the A-pillar area at the front end of the sill beam 2. In the event of a small overlap collision, the collision force can be fully transmitted rearward through the sill beam 2 and the front engine compartment longitudinal beam 4, which helps to reduce the deformation of the A-pillar and improve the safety of the passenger compartment.

[0064] Still Figure 1 ,Figure 2 and Figure 4 As a preferred embodiment, as shown in Figs. 1 and 2, in the embodiment, the middle part of the front cross beam 102 is arched forward relative to both ends thereof in the vehicle front-rear direction. Thus, by arching the middle part of the front cross beam 102 forward, the structural strength of the front cross beam 102 itself can be increased by taking advantage of the high structural strength of the arched structure, and obviously, the collision force transmitted to the front cross beam 102 can be transmitted to the side sill beams 2 and the rear section 4a of the front cabin longitudinal beam, etc. on both sides, so as to improve the collision force transmission dispersion effect.

[0065] In the embodiment, it is worth mentioning that when the cross beam lower plate 1021 and the cross beam upper plate 1022 are connected by buckling, both the cross beam lower plate 1021 and the cross beam upper plate 1022 can be stamping metal parts, and are fixed together by welding after buckling.

[0066] As an exemplary embodiment, the frame longitudinal beam 101, the rear cross beam 103 and the rear longitudinal beam 104 in the frame structure 10 can also be formed by buckling metal parts together, and the metal parts buckled together in each beam body and between each beam body can also be fixed by welding, so as to facilitate design and preparation, and also to improve the structural strength of the frame structure 10 as a whole.

[0067] In combination with Figure 1 and Figure 2 As a preferred embodiment, in the embodiment, both the rear longitudinal beams 104 in the frame structure 10 can be gradually outwardly inclined from front to rear in the vehicle front-rear direction. In this way, the rear longitudinal beams 104 are outwardly inclined from front to rear, which is beneficial to the smooth transmission of the collision force on the rear longitudinal beams 104 to the rear end of the side sill beam 2, and can improve the collision force transmission dispersion effect.

[0068] In addition, as a preferred embodiment, the front end of each rear longitudinal beam 104 can also be connected to the same side frame longitudinal beam 101 in the vehicle front-rear direction. At this time, the above-mentioned connection is that the projection of the front end of each rear longitudinal beam 104 on the same side frame longitudinal beam 101 in the vehicle front-rear direction at least partially overlaps. By connecting the front end of each rear longitudinal beam 104 to the same side frame longitudinal beam 101, a relatively continuous longitudinal force transmission channel can be formed between the frame longitudinal beam 101 and the rear longitudinal beam 104 on each side, which can also help to improve the collision force transmission effect.

[0069] As a preferred embodiment, as shown in Figures 1 to 3 The vehicle body structure of the embodiment further includes a front floor lower cross beam 6 located below the front floor panel 1.

[0070] The front floor under cross beam 6 is connected between the two side rocker beams 2 and above the two side frame longitudinal beams 101, and the two side frame longitudinal beams 101 are also connected with the front floor under cross beam 6. It can be understood that, by arranging the front floor under cross beam 6 below the front floor panel 1 and connecting it with the two side frame longitudinal beams 101, on the one hand, the front floor under cross beam 6 can be used to increase the reliability of the arrangement of the frame structure 10 in the vehicle body, and on the other hand, it is also obvious that the force transmission channel can be increased between the frame structure 10 and the side rocker beams 2, which helps to improve the collision force transmission dispersion effect.

[0071] In specific implementation, preferably, the front floor under cross beam 6 can be, for example, multiple, such as two, arranged along the front-rear direction of the vehicle, and each front floor under cross beam 6 is connected with the two side frame longitudinal beams 101.

[0072] In this way, the front floor under cross beam 6 is arranged in multiple, which can obviously further increase the reliability of the arrangement of the frame structure 10, increase the force transmission channel, improve the collision force transmission dispersion effect, and it can be understood that the multiple front floor under cross beams 6 can obviously also help to improve the rigidity of the middle part of the vehicle body, thereby increasing the comfort of the vehicle.

[0073] In the embodiment, on the basis of arranging the front floor under cross beam 6, as a preferred implementation form, as shown in Figure 7 and Figure 8 a seat mounting bracket 8 is arranged above the front floor panel 1 corresponding to the front floor under cross beam 6, and the seat mounting bracket 8 is also connected to the front floor panel 1.

[0074] In specific implementation, the seat mounting bracket 8 can be, for example, a box-shaped bracket structure and is welded to the front floor panel 1. When the front floor under cross beam 6 is arranged in two, the seat mounting bracket 8 can be arranged corresponding to each front floor under cross beam 6, and the seat mounting bracket 8 corresponding to each front floor under cross beam 6 is arranged in multiple on the left and right sides of the middle channel la to ensure the stability of the vehicle seat installation.

[0075] It can be understood that, by arranging the seat mounting bracket 8 above the front floor panel 1 corresponding to the front floor under cross beam 6, it not only meets the installation needs of the vehicle seat, but more importantly, it can also save the seat cross beam arranged above the front floor panel 1, thereby helping to reduce the weight and cost of the vehicle body, and also being beneficial to the arrangement of the wire harness and air conditioning air duct in the vehicle cabin.

[0076] In the embodiment, in combination with Figure 4As shown in the figure, as a preferred embodiment, the front cross beam 102, the rear cross beam 103 and the side frame longitudinal beams 101 can define a battery pack mounting area s in the frame structure 10, and based on this, the battery pack mounting points can also be arranged on the side frame longitudinal beams 101.

[0077] At this time, the battery pack mounting points can also be threaded sleeves fixed in the frame longitudinal beams 101, and in addition to arranging the battery pack mounting points on the frame longitudinal beams 101, of course, according to the specific installation needs of the battery pack, without interfering with other structures around, the battery pack mounting points can also be arranged on the front cross beam 102 and the rear cross beam 103.

[0078] By forming the battery pack mounting area s in the frame structure 10 and arranging the battery pack mounting points on the frame structure 10, it can be understood that the present embodiment can effectively associate the front subframe 3 and the battery pack in structure by the installation of the battery pack on the frame structure 10 and the connection of the front of the frame structure 10 and the front subframe 3, which not only provides a continuous force transmission channel, so that the collision force is effectively transmitted along the front subframe 3 and the battery pack frame, but also improves the stiffness of the vehicle body structure by connecting the front subframe 3 and the frame of the battery pack, which is beneficial to the improvement of the safety of the vehicle.

[0079] In addition, further, in view of the fact that in the vehicle body, the rear ends of the two side rocker beams 2 are usually connected to the same side rear floor longitudinal beams 5 respectively, and a rear subframe is also arranged between the two rear floor longitudinal beams 5. Therefore, in combination with the arrangement of the rear longitudinal beams 104 on the left and right rear of the frame structure 10, the present embodiment can also use the rocker beams 2 and the rear floor longitudinal beams 5 to establish an effective force transmission channel between the frame structure 10 and the rear subframe, and further associate the front and rear subframes in structure to better improve the safety of the vehicle in collision.

[0080] The vehicle body structure of the present embodiment is designed as above, by arranging the frame structure 10 below the front floor panel 1, the front subframe 3 is installed on the rear of the frame structure 10, the rear longitudinal beams 104 are arranged on the rear of the frame structure 10, and the battery pack mounting area s is arranged in the frame structure 10, which not only can block the rear movement of the front subframe 3 by the frame structure 10 when the vehicle is in frontal collision, and by arranging the subframe mounting point m on the front cross beam 102, it can reduce the risk of the mounting point on the rear of the subframe being pulled off during collision, at the same time, it can also use the rear force transmission channel formed by the frame structure 10 to help the collision force on the front subframe 3 to be fully transmitted along the rocker beam 1 and the frame of the battery pack, which can increase the contribution of the front subframe 3 and the battery pack to the force transmission in collision, and is beneficial to the improvement of the safety of the vehicle in collision.

[0081] Moreover, the vehicle body structure of the embodiment can form multiple force transmission paths on the left and right sides of the front part of the frame structure 10 and the left and right sides of the rear part, which helps to fully disperse the collision force and reduce the impact damage caused by the collision. On the other hand, the frame structure 10 at the bottom of the front floor can be combined with the upper vehicle body frame structure to form a double-layer multi-frame structure, which can improve the overall rigidity of the vehicle and help to improve the isolation of ground excitation and the like, thereby increasing the comfort of the vehicle.

[0082] Embodiment two

[0083] The embodiment relates to a vehicle provided with the vehicle body structure in embodiment one.

[0084] The vehicle of the embodiment can associate the front subframe 3 and the battery pack in structure by arranging the vehicle body structure in embodiment one, which can block the rear movement of the front subframe 3 by the frame structure 10 under the front floor during the vehicle frontal collision, and help to fully transmit the collision force on the front subframe 3 to the rear part of the rocker beam 2 by the rear force transmission channel formed by the frame structure 10, thereby increasing the contribution of the front subframe 3 and the battery pack to the collision force transmission and improving the safety of the vehicle collision.

[0085] In addition, the vehicle of the embodiment can form multiple force transmission paths on the left and right sides of the front part of the frame structure 10 and the left and right sides of the rear part, which helps to fully disperse the collision force and reduce the impact damage caused by the collision. On the other hand, the frame structure 10 at the bottom of the front floor can be combined with the upper vehicle body frame structure to form a double-layer multi-frame structure, which can improve the overall rigidity of the vehicle and help to improve the isolation of ground excitation and the like, thereby increasing the comfort of the vehicle and having good practicability.

[0086] The above only describes the preferred embodiments of the utility model and does not limit the utility model, and any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A vehicle body structure, characterized by comprising a frame structure (10) located below a front floor panel (1) ; the frame structure (10) comprises frame longitudinal beams (101) arranged on left and right sides, a front cross beam (102) connected to front ends of the frame longitudinal beams (101) on the left and right sides, a rear cross beam (103) connected to rear ends of the frame longitudinal beams (101) on the left and right sides, and rear longitudinal beams (104) arranged on the left and right sides; each of the frame longitudinal beams (101) is located on an inner side of a side sill (2) on the same side, the front cross beam (102) and the rear cross beam (103) are connected between the side sills (2) on the left and right sides, front ends of the rear longitudinal beams (104) on the left and right sides are connected to the rear cross beam (103), rear ends of the rear longitudinal beams (104) on the left and right sides are connected to rear ends of the side sills (2) on the same side, and the front cross beam (102) is provided with a subframe mounting point (m) for mounting a front subframe (3). 2.The vehicle body structure according to claim 1, characterized in that: the front cross beam (102) comprises a cross beam lower plate (1021) and a cross beam upper plate (1022) connected by buckling, and a cross beam cavity (Q) is formed between the cross beam upper plate (1022) and the cross beam lower plate (1021) ; and the subframe mounting point (m) comprises a connecting sleeve (9) connected between the cross beam upper plate (1022) and the cross beam lower plate (1021), and the front subframe (3) is connected in the connecting sleeve (9) by a fastener. 3.The vehicle body structure according to claim 1, characterized in that: the front cross beam (102) is located below and connected to rear sections (4a) of front engine bay longitudinal beams on the left and right sides; both left and right ends of the front cross beam (102) are bifurcated and have first connecting arms (102a) and second connecting arms (102b), and each of the first connecting arms (102a) is connected to the side sill (2) on the same side, and each of the second connecting arms (102b) is connected to a torsion box (7) on the same side. 4.The vehicle body structure according to claim 3, characterized in that: the front cross beam (102) and connecting points between the front cross beam (102) and the side sill (2), the rear section (4a) of the front engine bay longitudinal beam and the torsion box (7) on the same side form a triangle. 5.The vehicle body structure according to claim 1, characterized in that: from a top-down direction of the vehicle, a middle part of the front cross beam (102) is arranged to arch forward relative to both ends. 6.The vehicle body structure according to claim 1, characterized in that: each of the rear longitudinal beams (104) on the left and right sides is arranged to gradually outwardly incline from front to rear in a front-rear direction of the vehicle; and / or, front ends of the rear longitudinal beams (104) on the left and right sides are arranged to connect to the frame longitudinal beams (101) on the same side in the front-rear direction of the vehicle. 7.The vehicle body structure according to claim 1, characterized in that: further comprising a front floor lower cross beam (6) located below the front floor panel (1). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The front underfloor cross beam (6) is connected between the two side rocker beams (2) and above the two side frame longitudinal beams (101), and the two side frame longitudinal beams (101) and the front underfloor cross beam (6) are connected together.

8. The vehicle body structure according to claim 7, characterized in that: The front underfloor cross beam (6) is arranged in multiple in the front-rear direction of the vehicle, and each of the front underfloor cross beams (6) is connected to the two side frame longitudinal beams (101); and / or, A seat mounting bracket (8) is arranged above the front floor panel (1) corresponding to the front underfloor cross beam (6), and the seat mounting bracket (8) is connected to the front floor panel (1).

9. The vehicle body structure according to any one of claims 1 to 8, characterized in that: The front cross beam (102), the rear cross beam (103), and the two side frame longitudinal beams (101) define a battery pack mounting area (s) in the frame structure (10), and at least the two side frame longitudinal beams (101) are provided with a battery pack mounting point.

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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