Vehicle body and vehicle

Abstract

The application provides a vehicle body and a vehicle, and the vehicle body of the application is provided with a subframe and a battery pack; the side of the subframe close to the battery pack is provided with an energy absorption structure, the energy absorption structure extends to the side of the battery pack, and the end of the energy absorption structure close to the battery pack at least partially overlaps with the projection of the battery pack in the front-rear direction of the whole vehicle. The vehicle body of the application is provided with the energy absorption structure on the subframe, and the end of the energy absorption structure close to the battery pack at least partially overlaps with the projection of the battery pack in the front-rear direction of the whole vehicle, so that the force transmission between the subframe and the battery pack during the collision of the vehicle is facilitated, the energy absorption effect during the collision is improved, the subframe can inhibit the pulling of the rear section of the longitudinal beam and the footwell area, and the footwell intrusion amount is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle parts, in particular to a vehicle body. BACKGROUND

[0002] At present, with the design of automobiles entering the high-end stage, more and more vehicle models pay more attention to the overall vehicle collision safety performance design. However, due to the structure design of pure electric vehicles pursuing high efficiency and high integration, the front compartment longitudinal beam cantilever is generally short, and it cannot realize sufficient energy absorption in the collision working condition, so when the longitudinal beam is subjected to longitudinal crushing, the problem of longitudinal beam upwarping and inward bending deformation is prone to occur. In addition, limited by the structure of the existing vehicle body, the force transmission effect and the buffering and energy absorption effect between the auxiliary frame and the vehicle body are poor, especially when the vehicle collides, the force transmission between the auxiliary frame and the vehicle body is not smooth, thereby adversely affecting the overall vehicle collision safety performance. SUMMARY

[0003] Therefore, the present application aims to provide a vehicle body to improve the force transmission and energy absorption effect of the vehicle body in collision.

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

[0005] A vehicle body, wherein the vehicle body is provided with an auxiliary frame and a battery pack.

[0006] The energy absorption structure extends to the side of the battery pack, and the end of the energy absorption structure close to the battery pack at least partially overlaps with the projection of the battery pack in the front-rear direction of the vehicle.

[0007] Further, in the left-right direction of the vehicle, the energy absorption structure is located in the middle part of the auxiliary frame; and / or, the energy absorption structure is located at the center line position of the vehicle body.

[0008] Further, a gap is provided between the end of the energy absorption structure close to the battery pack and the battery pack.

[0009] Further, the end of the battery pack close to the auxiliary frame is provided with a connecting frame, and the end of the energy absorption structure close to the battery pack is correspondingly provided with the connecting frame in the front-rear direction of the vehicle; and / or,

[0010] The battery pack is provided with an internal longitudinal beam extending in the front-rear direction of the vehicle, and the internal longitudinal beam is correspondingly provided with the energy absorption structure in the front-rear direction of the vehicle.

[0011] Further, the energy absorption structure comprises an energy absorption box, and the energy absorption box is provided with a crushing rib.

[0012] Further, the energy absorption box is trapezoidal in shape with the cross section gradually decreasing from front to back, and a cavity is formed inside the energy absorption box.

[0013] Further, the rear part of the sub-frame is provided with a mounting cross beam, and the energy absorption structure is arranged on the mounting cross beam.

[0014] A connecting beam is arranged between the mounting cross beam and the rocker beam in an inclined manner.

[0015] Further, the mounting cross beam comprises a cross beam body and extension beams arranged on both sides of the cross beam body.

[0016] The energy absorption structure is arranged on the cross beam body, and the connecting beam is arranged between the extension beams and the rocker beam.

[0017] Further, the end of the sub-frame away from the battery pack is provided with a sub-frame crash beam, and the sub-frame crash beam is connected to the sub-frame through sub-frame energy absorption boxes arranged on the left and right sides.

[0018] The vehicle body has body longitudinal beams arranged on the left and right sides, and the end of each side of the body longitudinal beam is connected to a main energy absorption box arranged in correspondence with the upper and lower parts of the sub-frame energy absorption box on the same side.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] The vehicle of the vehicle body has the energy absorption structure extending to the battery pack on the sub-frame, and the end of the energy absorption structure close to the battery pack at least partially overlaps the projection of the battery pack in the front-rear direction of the vehicle, which facilitates the force transmission between the sub-frame and the battery pack during vehicle collision, improves the energy absorption effect during collision, and inhibits the pulling of the sub-frame on the rear section of the longitudinal beam and the footwell area, thereby reducing the footwell intrusion.

[0021] In addition, the energy absorption structure can be arranged at the middle part of the sub-frame in the left-right direction of the vehicle to facilitate the arrangement of the energy absorption structure and the force transmission between the sub-frame and the battery pack. A gap can be arranged between the energy absorption structure and the battery pack to contact and collapse the energy absorption structure and the battery pack for energy absorption only when the collision force is large, thereby avoiding direct contact and damage to the battery pack mounting point upon collision and providing better protection for the battery pack.

[0022] In addition, the connecting frame is arranged on the battery pack, and the connecting frame and the energy absorption structure are arranged in correspondence in the front-rear direction, which enables the energy absorption structure to transmit the collision force to the battery pack through the connecting frame, further improving the protection effect on the battery pack. Furthermore, the internal longitudinal beam corresponding to the energy absorption structure is arranged in the battery pack, which facilitates the transmission of the force transmitted by the energy absorption structure to the battery pack to the rear through the internal longitudinal beam, thereby improving the force transmission effect.

[0023] Secondly, the structural strength and energy absorption effect of the energy-absorbing box can be improved by incorporating collapse ribs. Furthermore, by making the energy-absorbing box a trapezoidal shape with a gradually decreasing cross-section from front to back, and by forming a cavity inside the energy-absorbing box, better structural strength can be achieved, resulting in a better energy absorption effect.

[0024] Furthermore, a mounting beam is provided at the rear of the subframe, on which the energy-absorbing structure is mounted. An inclined connecting beam is provided between the mounting beam and the sill beam, which enables the subframe to transmit force to the battery pack and the sill beam through the energy-absorbing structure and the connecting beam, thereby facilitating multi-channel force transmission and improving the force transmission effect.

[0025] In addition, by setting up a subframe energy-absorbing box and a main energy-absorbing box, it is beneficial to form an upper and lower two-layer energy-absorbing structure, thereby improving the energy absorption effect.

[0026] Another object of the present invention is to provide a vehicle having the vehicle body as described above.

[0027] The vehicle described in this invention, by having a body as described above, is beneficial to improving the vehicle's collision safety performance. Attached Figure Description

[0028] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0029] Figure 1 This is a structural schematic diagram of the vehicle body from one perspective according to an embodiment of the present invention;

[0030] Figure 2 for Figure 1 Enlarged view of section A;

[0031] Figure 3 This is a structural schematic diagram of the vehicle body from another perspective according to an embodiment of the present invention;

[0032] Figure 4 for Figure 3 Enlarged view of section B;

[0033] Figure 5 for Figure 3 Enlarged view of section C;

[0034] Figure 6 This is a partial structural diagram of the vehicle body according to an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1, subframe; 2, battery pack; 3, energy absorption structure; 4, groove; 5, gap; 6, inner longitudinal beam; 7, mounting cross beam; 701, cross beam body; 702, extension beam; 8, crush rib; 9, connecting frame; 10, connecting beam; 11, subframe crash beam; 12, subframe energy absorption box; 13, body longitudinal beam; 14, main energy absorption box; 15, main crash beam. DETAILED DESCRIPTION

[0037] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0038] In the description of the present application, it should be noted that the orientation words such as "up, down, left, right, front, back" used in the present embodiment are defined based on the up-down direction, left-right direction and front-back direction of the automobile. Among them, the up-down direction of the automobile is also the height direction of the automobile, the front-back direction of the automobile is also the length direction of the automobile, and the left-right direction of the automobile is also the width direction of the automobile.

[0039] In addition, in the description of the present application, unless otherwise explicitly limited, the terms "mounting", "connecting", "connection" and "connector" should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood in combination with the specific circumstances.

[0040] The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] Embodiment one

[0042] The present embodiment relates to a vehicle body of a vehicle, which is constituted as a whole as shown in Figures 1 to 6 , and the vehicle body is provided with a subframe 1 and a battery pack 2. The subframe 1 is provided with an energy absorption structure 3 near the side close to the battery pack 2, the energy absorption structure 3 extends to the side of the battery pack 2, and the end of the energy absorption structure 3 close to the battery pack 2 at least partially overlaps the projection of the battery pack 2 in the front-back direction of the whole vehicle.

[0043] It should be noted that the subframe 1 of the present embodiment is generally a front subframe. In specific implementation, as shown in Figure 1 and Figure 2 , the end of the energy absorption structure 3 close to the battery pack 2 overlaps the projection of the battery pack 2 in the front-back direction of the whole vehicle.

[0044] It can be understood that by providing the energy-absorbing structure 3 extending to the battery pack 2 on the sub-frame 1, and making the end of the energy-absorbing structure 3 close to the battery pack 2 overlap with the projection of the battery pack 2 in the front-rear direction of the vehicle, the force transmission between the sub-frame 1 and the battery pack 2 during vehicle collision is facilitated, the energy-absorbing effect during collision is improved, and the pulling of the sub-frame 1 on the rear section of the longitudinal beam and the footwell area is inhibited, thereby reducing the footwell intrusion.

[0045] Of course, the sub-frame 1 in the present embodiment can also be a rear sub-frame. In addition, it is also possible that the end of the energy-absorbing structure 3 close to the battery pack 2 only partially overlaps with the projection of the battery pack 2 in the front-rear direction of the vehicle.

[0046] Based on the above overall introduction, as a preferred embodiment, as shown in Figure 1 and Figure 2 in the present embodiment, in the left-right direction of the vehicle, the energy-absorbing structure 3 is located in the middle of the sub-frame 1, and the energy-absorbing structure 3 is located at the center line position of the vehicle body. It can be expected that by locating the energy-absorbing structure 3 in the middle of the sub-frame 1, the arrangement is facilitated, and the force transmission from the sub-frame 1 to the battery pack 2 during collision is facilitated, thereby improving the balance of the force on the left and right sides of the vehicle body.

[0047] It should be noted that generally, the middle of the sub-frame 1 coincides with the center line position of the vehicle body. Of course, in the case where the middle of the sub-frame 1 does not coincide with the center line position of the vehicle body, the energy-absorbing structure 3 can be arranged in the middle of the sub-frame 1 or located at the center line position of the vehicle body according to requirements.

[0048] As a preferred embodiment, as shown in Figure 2 in the present embodiment, a gap 5 is provided between the end of the energy-absorbing structure 3 close to the battery pack 2 and the battery pack 2. In this way, in the case of a large collision force, the collision force can be transmitted to the battery pack 2 through the sub-frame 1, thereby avoiding direct damage to the battery pack 2 mounting point upon collision, and providing better protection for the battery pack 2. In addition, the size of the gap 5 in the present embodiment can be 20 mm.

[0049] As a preferred embodiment, as shown in Figure 2 and Figure 6 in the present embodiment, a connecting frame 9 is provided at the end of the battery pack 2 close to the sub-frame 1, and the end of the energy-absorbing structure 3 close to the battery pack 2 is correspondingly arranged in the front-rear direction of the vehicle with the connecting frame 9. In addition, an internal longitudinal beam 6 extending in the front-rear direction of the vehicle is provided in the battery pack 2, and the internal longitudinal beam 6 is correspondingly arranged in the front-rear direction of the vehicle with the energy-absorbing structure 3. It can be expected that by providing the connecting frame 9 on the battery pack 2 and correspondingly arranging the connecting frame 9 and the energy-absorbing structure 3 in the front-rear direction, the energy-absorbing structure 3 can transmit the collision force to the battery pack 2 through the connecting frame 9, thereby further improving the protection of the battery pack.

[0050] In addition, by arranging the internal longitudinal beam 6 in the battery pack 2, the force transmitted by the energy-absorbing structure 3 to the battery pack 2 is transmitted rearward through the internal longitudinal beam 6, so that the battery pack 2 participates in the force transmission of the vehicle collision, the force transmission channel is increased, and the force transmission effect is improved. In addition, the connecting frame 9 can be connected with the vehicle body transverse beam, so that the collision force transmitted to the connecting frame 9 can be transmitted to the vehicle body transverse beam, further improving the force transmission effect.

[0051] It should be noted that, in the embodiment, the connecting frame 9 is arranged on the battery pack 2 and the internal longitudinal beam 6 is arranged in the battery pack 2, which is only a preferred embodiment. In addition, only the connecting frame 9 arranged on the battery pack 2 or only the internal longitudinal beam 6 arranged in the battery pack 2 can also be selected.

[0052] In order to facilitate the connection between the energy-absorbing structure 3 and the auxiliary frame 1, the recess 4 is arranged on the energy-absorbing structure 3, and part of the auxiliary frame 1 is embedded in the recess 4. When the energy-absorbing structure 3 and the auxiliary frame 1 are connected, the recess 4 can increase the connection area between the energy-absorbing structure 3 and the auxiliary frame 1, thereby ensuring the connection strength between them. In addition, the energy-absorbing structure 3 and the auxiliary frame 1 can be connected by welding and other methods commonly used in the prior art.

[0053] As a preferred embodiment, in the embodiment, the energy-absorbing structure 3 includes an energy-absorbing box, and the energy-absorbing box is provided with the collapse rib 8. In this way, the structure is simple, and the structural strength of the energy-absorbing structure 3 is improved, thereby facilitating better energy-absorbing effect. In addition, as shown in Figure 2 , the energy-absorbing box is trapezoidal in shape with the cross section gradually decreasing from front to back, and a cavity is formed in the energy-absorbing box, which is beneficial to further improve the structural strength and energy-absorbing effect of the energy-absorbing box.

[0054] As a preferred embodiment, as shown in Figure 2 and Figure 3 and Figure 4 , in the embodiment, the rear part of the auxiliary frame 1 is provided with the mounting transverse beam 7, the energy-absorbing structure 3 is arranged on the mounting transverse beam 7, and the connecting beam 10 is arranged between the mounting transverse beam 7 and the rocker beam in an inclined manner. It can be understood that, by arranging the mounting transverse beam 7 and the connecting beam 10 between the mounting transverse beam 7 and the rocker beam, the auxiliary frame 1 can transmit force to the battery pack 2 and the rocker beam through the energy-absorbing structure 3 and the connecting beam 10 respectively, which is beneficial to realize multi-channel force transmission and improve the force transmission effect.

[0055] In specific implementation, as shown in Figure 3 and Figure 6As shown in FIG. 1, the mounting cross beam 7 comprises a cross beam body 701 and extension beams 702 arranged on both sides of the cross beam body 701, the energy absorption structure 3 is arranged on the cross beam body 701, and the connecting beam 10 is arranged between the extension beams 702 and the rocker beams. In this way, the collision force transmitted to the subframe 1 can be transmitted to the battery pack 2 through the cross beam body 701 and the energy absorption structure 3, and can also be transmitted to the rocker beams on both sides through the cross beam body 701, the extension beams 702 and the connecting beam. In addition, as shown in FIG. 1, the energy absorption structure 3 comprises a plurality of energy absorption boxes 4 arranged on the cross beam body 701. Figure 3 As shown in FIG. 1, in the embodiment, the extension beams 702 on both sides can be connected with the rocker beams on both sides respectively, so that the subframe 1 can be directly transmitted to the rocker beams on both sides through the extension beams 702 on both sides, and the force transmission effect is further ensured.

[0056] As a preferred embodiment, as shown in FIG. 1, the energy absorption boxes 4 are arranged on the cross beam body 701 in a staggered manner. Figure 3 and Figure 5 As shown in FIG. 1, in the embodiment, the end of the subframe 1 away from the battery pack 2 is provided with a subframe crash beam 11, and the subframe crash beam 11 is connected to the subframe 1 through subframe energy absorption boxes 12 arranged on the left and right sides. The vehicle body has body longitudinal beams 13 arranged on the left and right sides, and each side of the body longitudinal beams 13 is respectively connected with a main energy absorption box 14 arranged in correspondence with the upper and lower sides of the subframe energy absorption box 12 on the same side.

[0057] It can be understood that by arranging the subframe energy absorption boxes 12 and the main energy absorption boxes 14 in a staggered manner, the upper and lower two-layer energy absorption structures 3 are formed, and the energy absorption effect is improved.

[0058] The vehicle body of the vehicle of the embodiment is provided with the energy absorption structure 3 on the subframe 1, so as to facilitate the force transmission between the subframe 1 and the battery pack 2, improve the energy absorption effect during collision, and also inhibit the pulling of the subframe 1 on the rear section of the longitudinal beam and the footwell area, and reduce the footwell intrusion amount. In addition, by arranging the internal longitudinal beam 6 and the connecting beam 10, the multi-channel force transmission is facilitated, and the force transmission effect is improved.

[0059] Embodiment two

[0060] The embodiment relates to a vehicle, which has the vehicle body of the vehicle of the embodiment one.

[0061] The vehicle of the embodiment is provided with the vehicle body of the vehicle of the embodiment one, so as to facilitate the improvement of the collision safety performance of the whole vehicle.

[0062] The above description is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1.A vehicle body of a vehicle, characterized in that: a subframe (1) and a battery pack (2) are arranged in the vehicle body; an energy-absorbing structure (3) is arranged on a side of the subframe (1) close to the battery pack (2), the energy-absorbing structure (3) is provided with a groove (4), the energy-absorbing structure (3) extends to the side of the battery pack (2), and an end of the energy-absorbing structure (3) close to the battery pack (2) at least partially overlaps with a projection of the battery pack (2) in a front-rear direction of the vehicle; a gap (5) is arranged between the end of the energy-absorbing structure (3) close to the battery pack (2) and the battery pack (2); an internal longitudinal beam (6) extending in the front-rear direction of the vehicle is arranged in the battery pack (2), and the internal longitudinal beam (6) is arranged corresponding to the energy-absorbing structure (3) in the front-rear direction of the vehicle; a mounting cross beam (7) is arranged at a rear part of the subframe (1), and the energy-absorbing structure (3) is arranged on the mounting cross beam (7); a connecting beam (10) is arranged between the mounting cross beam (7) and a rocker beam in an inclined manner; the mounting cross beam (7) comprises a cross beam body (701) and extension beams (702) arranged on both sides of the cross beam body (701); the energy-absorbing structure (3) is arranged on the cross beam body (701), and the connecting beam (10) is arranged between the extension beams (702) and the rocker beam. 2.The vehicle body of the vehicle according to claim 1, characterized in that: in a left-right direction of the vehicle, the energy-absorbing structure (3) is located at a middle part of the subframe (1); and / or the energy-absorbing structure (3) is located at a center line position of the vehicle body. 3.The vehicle body of the vehicle according to claim 1, characterized in that: an end of the battery pack (2) close to the subframe (1) is provided with a connecting frame (9), and an end of the energy-absorbing structure (3) close to the battery pack (2) is arranged corresponding to the connecting frame (9) in the front-rear direction of the vehicle. 4.The vehicle body of the vehicle according to claim 1, characterized in that: the energy-absorbing structure (3) comprises an energy-absorbing box, and the energy-absorbing box is provided with a crush rib (8). 5.The vehicle body of the vehicle according to claim 4, characterized in that: the energy-absorbing box is trapezoidal in shape and gradually decreases in cross section from front to back, and a cavity is formed inside the energy-absorbing box. 6.The vehicle body of the vehicle according to any one of claims 1 to 5, characterized in that: an end of the subframe (1) away from the battery pack (2) is provided with a subframe crash beam (11), and the subframe crash beam (11) is connected to the subframe (1) through subframe energy-absorbing boxes (12) arranged on both sides; the vehicle body is provided with vehicle body longitudinal beams (13) arranged on both sides, and end parts of each side of the vehicle body longitudinal beams (13) are respectively connected with main energy-absorbing boxes (14) arranged corresponding to the subframe energy-absorbing boxes (12) on the same side. 7.A vehicle, characterized in that: the vehicle is provided with the vehicle body of the vehicle according to any one of claims 1 to 6.

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