Rear vehicle body structure and vehicle

Abstract

The invention relates to the technical field of vehicles, and discloses a rear vehicle body structure and a vehicle, and the rear vehicle body structure comprises a rear floor, a first side wall, a top cover beam and a second side wall which are connected in sequence and form an annular structure. The rear floor is provided with a first cross beam and a second cross beam, the first side wall and the second side wall are each provided with a first vertical beam and a second vertical beam, and the first cross beam, the first vertical beam on the first side wall, the top cover beam and the first vertical beam on the second side wall are sequentially connected to form a first annular beam structure. A second cross beam is arranged on the rear floor, second vertical beams are arranged on the first side wall and the second side wall, the second vertical beams are connected with the first vertical beams through first connecting frames, and the second cross beam, the second vertical beams and the first vertical beams on the first side wall, the top cover beam and the first vertical beams and the second vertical beams on the second side wall are sequentially connected to form a second annular beam structure. Due to the existence of the first annular beam structure and the second annular beam structure, the bending and torsional rigidity of the rear vehicle body is improved, and the whole vehicle performance such as NVH, VD and durability is further improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a rear vehicle body structure and a vehicle. Background Art

[0002] With the advancement of science and technology and the development of the automobile industry, people's pursuit of convenience in getting on and off the car is constantly improving, and the body structure without B-pillars has gradually entered everyone's field of vision. Without B-pillars, there is more space for getting on and off the car, making it more convenient to get on and off the car.

[0003] The car body includes the front body and the rear body. Due to the lack of support from the B-pillar, the bending and torsional stiffness of the rear body is low, resulting in the rear body without a B-pillar having difficulty meeting the requirements for anti-bending and anti-torsion capabilities, which in turn leads to unsatisfactory vehicle performance such as NVH, VD, and durability. Summary of the invention

[0004] In view of this, the present application provides a rear body structure to solve or improve the problem of unsatisfactory vehicle performance due to low bending and torsional stiffness of the rear body due to the lack of support from the B-pillar.

[0005] In a first aspect, the present application provides a rear vehicle body structure, comprising: a rear floor, a first side panel, a roof beam, and a second side panel that are sequentially connected to form a ring structure, wherein:

[0006] A first cross beam and a second cross beam are arranged on the rear floor, a first vertical beam and a second vertical beam are arranged on the first side enclosure and the second side enclosure, and the first cross beam, the first vertical beam on the first side enclosure, the top cover beam and the first vertical beam on the second side enclosure are sequentially connected to form a first annular beam structure;

[0007] The second cross beam, the second vertical beam and the first vertical beam on the first side surround, the top cover beam, the first vertical beam and the second vertical beam on the second side surround are sequentially connected to form a second annular beam structure.

[0008] Optionally, a third cross beam is provided on the rear side of the rear floor, and a third vertical beam is provided on the rear sides of the first side surround and the second side surround, and the third cross beam, the third vertical beam on the first side surround, the top cover beam, and the third vertical beam on the second side surround are sequentially connected to form a third annular beam structure;

[0009] A fourth cross beam is arranged on the rear floor, and fourth vertical beams are arranged on the first side enclosure and the second side enclosure, and the fourth vertical beam is connected to the third vertical beam via a second connecting frame, and the fourth cross beam, the fourth vertical beam and the third vertical beam on the first side enclosure, the top cover beam, and the third vertical beam and the fourth vertical beam on the second side enclosure are sequentially connected to form a fourth annular beam structure.

[0010] Optionally, a plurality of cross beam plates are laterally arranged on the rear floor, and the cross beam plates are grouped in pairs, and each group of the cross beam plates respectively forms the first cross beam, the second cross beam and the fourth cross beam, at least two supporting ribs are arranged between each group of the cross beam plates, and two adjacent supporting ribs and the cross beam plates are combined to form a triangular reinforcement structure.

[0011] Optionally, a plurality of longitudinal connecting beams are further provided on the rear floor, and the first cross beam and the second cross beam are connected by the longitudinal connecting beams, and the second cross beam and the third cross beam are connected by the longitudinal connecting beams.

[0012] Optionally, the fourth vertical beam includes a reinforcing shell and vertical ribs arranged on the reinforcing shell, the width of the reinforcing shell increases from bottom to top, the top end of the reinforcing shell is connected to the second connecting frame, and the bottom end of the reinforcing shell is connected to the fourth cross beam, and two vertical ribs are provided, and the two vertical ribs are respectively located on both sides of the reinforcing shell, and the vertical ribs are connected to the first side enclosure and / or the second side enclosure.

[0013] Optionally, it also includes:

[0014] The mounting frame is provided with at least two mounting points, wherein the mounting points are connected to the rear floor, and the mounting frame is suitable for mounting electrical components.

[0015] Optionally, a transverse reinforcing rib groove and a longitudinal reinforcing rib groove are provided on the mounting frame, and the transverse reinforcing rib groove and the longitudinal reinforcing rib groove are cross-arranged.

[0016] Optionally, it also includes a battery pack mounting longitudinal beam for installing the battery pack, a step groove is provided on the rear floor, a connecting portion with a step surface is provided on the battery pack mounting longitudinal beam, the connecting portion is inserted in the step groove and the step surface is fitted and connected to the groove wall of the step groove.

[0017] Optionally, it also includes a threshold beam for supporting the door threshold, the threshold beam is respectively connected to the rear floor and the battery pack mounting longitudinal beam, and the battery pack mounting longitudinal beam, the threshold beam and the rear floor are all provided with battery pack mounting points for mounting the battery pack.

[0018] In a second aspect, the present application also provides a vehicle comprising any of the above-described rear vehicle body structures.

[0019] The present application provides a rear vehicle body structure, including a rear floor, a first side enclosure, a roof beam, and a second side enclosure. The rear floor, the first side enclosure, the roof beam, and the second side enclosure are connected in sequence to form a rear vehicle body. A first cross beam is arranged on the rear floor. A first vertical beam is arranged on both the first side enclosure and the second side enclosure. The first cross beam, the first vertical beam on the first side enclosure, and the first vertical beam on the roof beam and the second side enclosure are connected in sequence to form a first annular beam structure. A second cross beam is arranged on the rear floor, and a second vertical beam is arranged on both the first side enclosure and the second side enclosure. The second cross beam, the second vertical beam on the first side enclosure, the first vertical beam on the first side enclosure, the roof beam, the first vertical beam on the second side enclosure, and the second vertical beam on the second side enclosure are connected in sequence to form a second annular beam structure. The presence of the first annular beam structure and the second annular beam structure increases the bending and torsional stiffness of the rear vehicle body, thereby improving the vehicle performance such as NVH, VD, and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram of a rear vehicle body structure after hiding the second side wall in an embodiment of the present application;

[0022] Figure 2 for Figure 1 A is a partial enlarged schematic diagram;

[0023] Figure 3 This is a schematic diagram of the structure of a rear vehicle body structure after hiding the first side wall in an embodiment of the present application;

[0024] Figure 4 This is a schematic diagram of the bottom structure of a rear vehicle body structure in an embodiment of the present application;

[0025] Figure 5 This is a structural schematic diagram of a cross beam plate of a rear vehicle body structure in an embodiment of the present application;

[0026] Figure 6 This is a schematic structural diagram of a longitudinal connecting beam of a rear vehicle body structure in an embodiment of the present application;

[0027] Figure 7 It is a schematic diagram of an axle side of a first side periphery of a rear vehicle body structure in an embodiment of the present application;

[0028] Figure 8 It is a schematic diagram of an axle side of a second side periphery of a rear vehicle body structure in an embodiment of the present application;

[0029] Fig. 9 A top view of a rear floor of a rear vehicle body structure in an embodiment of the present application;

[0030] Fig.10 This is a schematic structural diagram of a mounting frame for a rear vehicle body structure in an embodiment of the present application;

[0031] Fig.11 A schematic diagram of the connection between a door sill beam, a battery pack mounting longitudinal beam and a rear floor of a rear vehicle body structure in an embodiment of the present application;

[0032] Fig.12 for Fig.11 A partial enlarged schematic diagram of B in the middle;

[0033] Fig.13 This is a schematic structural diagram of a battery pack mounting longitudinal beam of a rear vehicle body structure in an embodiment of the present application;

[0034] Fig.14 This is a schematic structural diagram of the front side of a rear floor panel of a rear vehicle body structure in an embodiment of the present application.

[0035] Description of reference numerals:

[0036] 1. Rear floor; 2. First side panel; 3. Top cover beam; 4. Second side panel; 5. First cross beam; 6. First vertical beam; 7. Second cross beam; 8. Second vertical beam; 9. First connecting frame; 10. Third cross beam; 11. Third vertical beam; 12. Fourth cross beam; 13. Fourth vertical beam; 131. Reinforcement shell; 132. Vertical ribs; 14. Second connecting frame; 15. Cross beam plate; 16. Support ribs; 17. Longitudinal connecting beam; 171. Connecting plate; 172. Rib plate; 18. Step groove; 19. Step surface; 20. Door sill beam; 21. Battery pack installation point; 22. Connecting part; 23. Vertical reinforcement ribs; 24. Mounting frame; 25. Transverse reinforcement rib groove; 251. Transverse groove; 252. First connecting groove; 26. Longitudinal reinforcement rib groove; 27. Battery pack installation longitudinal beam. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0038] Combine the following Figures 1 to 14 , describing an embodiment of the present application.

[0039] According to an embodiment of the present application, on the one hand, as Figures 1 to 3 As shown, a rear vehicle body structure is provided, including a rear floor 1, a first side enclosure 2, a roof beam 3 and a second side enclosure 4. The roof beam 3 is used to support the vehicle body roof. The bottom side of the first side enclosure 2 is connected to the first side of the rear floor 1, and the bottom side of the second side enclosure 4 is connected to the second side of the rear floor 1. The first end of the roof beam 3 is connected to the top side of the first side enclosure 2, and the second end of the roof beam 3 is connected to the top side of the second side enclosure 4, so that the rear floor 1, the first side enclosure 2, the roof beam 3 and the second side enclosure 4 are connected in sequence to form a rear vehicle body. The rear floor 1, the first side enclosure 2, the roof beam 3 and the second side enclosure 4 can be integrally die-cast.

[0040] A first cross beam 5 is provided on the rear floor 1, and the first cross beam 5 is located on the front side of the rear floor 1. A first vertical beam 6 is provided on both the first side enclosure 2 and the second side enclosure 4. The first end of the first cross beam 5 is connected to the first end of the first vertical beam 6 on the first side enclosure 2, the second end of the first vertical beam 6 on the first side enclosure 2 is connected to the first end of the top cover beam 3, the second end of the top cover beam 3 is connected to the second end of the first vertical beam 6 on the second side enclosure 4, and the first end of the first vertical beam 6 on the second side enclosure 4 is connected to the second end of the first cross beam 5, so that the first cross beam 5, the first vertical beam 6 on the first side enclosure 2, the top cover beam 3, and the first vertical beam 6 on the second side enclosure 4 are connected in sequence to form a first annular beam structure, thereby increasing the bending and torsional rigidity of the rear vehicle body structure.

[0041] A second cross beam 7 is arranged on the rear floor 1, and the second cross beam 7 is located at the rear side of the first cross beam 5. Second vertical beams 8 are arranged on both the first side enclosure 2 and the second side enclosure 4. The first end of the second cross beam 7 is connected to the first end of the second vertical beam 8 on the first side enclosure 2, and the second end of the second vertical beam 8 on the first side enclosure 2 is connected to the first vertical beam 6 on the first side enclosure 2 through a first connecting frame 9. The second end of the second vertical beam 8 on the second side enclosure 4 is connected to the first vertical beam 6 on the second side enclosure 4 through a first connecting frame 9. Thus, the second cross beam 7, the second vertical beam 8 on the first side enclosure 2, the first vertical beam 6 on the first side enclosure 2, the top cover beam 3, the first vertical beam 6 on the second side enclosure 4, and the second vertical beam 8 on the second side enclosure 4 are sequentially connected to form a second annular beam structure, which further increases the bending and torsional rigidity of the rear vehicle body structure.

[0042] The existence of the first annular beam structure and the second annular beam structure increases the bending and torsional stiffness of the rear body, thereby improving the overall vehicle performance such as NVH, VD, and durability.

[0043] NVH is a term commonly used in the automotive industry, which stands for Noise, Vibration and Harshness. These three aspects are key factors affecting the ride comfort and driving experience of a car.

[0044] VD is the abbreviation of "Vehicle Dynamics". Vehicle dynamics is the science that studies the motion laws of vehicles under various driving conditions under the action of various external and internal forces and torques. It covers many aspects such as vehicle handling, stability, comfort, etc., and is one of the important indicators for evaluating vehicle performance.

[0045] In an optional embodiment, if Figure 1 and Figure 3 As shown, a third cross beam 10 is provided on the rear floor 1, and the third cross beam 10 is located on the rear side of the rear floor 1. A third vertical beam 11 is provided on both the first side enclosure 2 and the second side enclosure 4. The first end of the third cross beam 10 is connected to the first end of the third vertical beam 11 on the first side enclosure 2, the second end of the third vertical beam 11 on the first side enclosure 2 is connected to the first end of the roof beam 3, the second end of the roof beam 3 is connected to the second end of the third vertical beam 11 on the second side enclosure 4, and the first end of the third vertical beam 11 on the second side enclosure 4 is connected to the second end of the third cross beam 10, so that the third cross beam 10, the third vertical beam 11 on the first side enclosure 2, the roof beam 3 and the third vertical beam 11 on the second side enclosure 4 are connected in sequence to form a third annular beam structure, thereby increasing the bending and torsional rigidity of the rear vehicle body structure.

[0046] A fourth cross beam 12 is provided on the rear floor 1, and the fourth cross beam 12 is located at the front side of the third cross beam 10. A fourth vertical beam 13 is provided on both the first side enclosure 2 and the second side enclosure 4. The first end of the fourth cross beam 12 is connected to the first end of the fourth vertical beam 13 on the first side enclosure 2, and the second end of the fourth vertical beam 13 on the first side enclosure 2 is connected to the third vertical beam 11 on the first side enclosure 2 through the second connecting frame 14. The second end of the fourth vertical beam 13 on the second side enclosure 4 is connected to the third vertical beam 11 on the second side enclosure 4 through the second connecting frame 14. Thus, the fourth cross beam 12, the fourth vertical beam 13 on the first side enclosure 2, the third vertical beam 11 on the first side enclosure 2, the top cover beam 3, the third vertical beam 11 on the second side enclosure 4, and the fourth vertical beam 13 on the second side enclosure 4 are sequentially connected to form a fourth annular beam structure, which further increases the bending and torsional rigidity of the rear vehicle body structure.

[0047] The presence of the third and fourth ring beam structures increases the bending and torsional rigidity of the rear body.

[0048] The first cross beam 5, the second cross beam 7, the third cross beam 10 and the fourth cross beam 12 are integrally die-cast on the rear floor 1. The first vertical beam 6, the second vertical beam 8, the third vertical beam 11 and the fourth vertical beam 13 are integrally die-cast on the first side surround 2 and the second side surround 4.

[0049] It is worth noting that two roof beams 3 can be provided, and the two ends of the two roof beams 3 are respectively connected to the first side wall 2 and the second side wall 4. The two roof beams 3 jointly support the roof and the side walls on both sides, thereby increasing the bending and torsional rigidity of the rear body. The first vertical beams 6 on the first side wall 2 and the second side wall 4 are respectively connected to the two ends of the first roof beam 3.

[0050] In this way, the third vertical beams 11 on the first side enclosure 2 and the second side enclosure 4 are respectively connected to the two ends of the second roof beam 3. The first cross beam 5, the first vertical beam 6 on the first side enclosure 2, the first roof beam 3 and the first vertical beam 6 on the second side enclosure 4 are sequentially connected to form a first annular beam structure. The second cross beam 7, the second vertical beam 8 on the first side enclosure 2, the first vertical beam 6 on the first side enclosure 2, the roof beam 3, the first vertical beam 6 on the second side enclosure 4 and the second vertical beam 8 on the second side enclosure 4 are sequentially connected to form a second annular beam structure.

[0051] The third cross beam 10, the third vertical beam 11 on the first side wall 2, the second roof beam 3, and the third vertical beam 11 on the second side wall 4 are sequentially connected to form a third annular beam structure. The fourth cross beam 12, the fourth vertical beam 13 on the first side wall 2, the third vertical beam 11 on the first side wall 2, the second roof beam 3, the third vertical beam 11 on the second side wall 4, and the fourth vertical beam 13 on the second side wall 4 are sequentially connected to form a fourth annular beam structure.

[0052] In some embodiments, Figures 4 to 6 As shown, a plurality of cross beams 15 are transversely arranged on the bottom surface of the rear floor 1, and the cross beams 15 can be arranged perpendicular to the rear floor 1. Two adjacent cross beams 15 form a group, and the two cross beams 15 of each group respectively form the first cross beam 5, the second cross beam 7 or the fourth cross beam 12. At least two support ribs 16 are arranged in the channel formed between the two cross beams 15 of each group. In the case where two support ribs 16 are arranged, one cross beam 15 is connected to each side of the support rib 16, so that the two adjacent support ribs 16 and the cross beam 15 form a triangle.

[0053] There can be multiple support ribs 16, and the number of support ribs 16 can be set according to the length of the cross beam plate 15. The support ribs 16 are arranged one by one along the extension direction of the channel to form multiple triangles, so that the support ribs 16 and the cross beam plate 15 are combined to form a triangular reinforcement structure, so that the bending and torsional rigidity of the first cross beam 5, the second cross beam 7 or the fourth cross beam 12 is stronger, and the bending and torsional rigidity of the rear floor 1 is enhanced.

[0054] As an optional implementation, Figure 4 As shown, a plurality of longitudinal connecting beams 17 are provided on the rear floor 1 , and each longitudinal connecting beam 17 is integrally die-cast on the rear floor 1 .

[0055] One end of the two longitudinal connecting beams 17 is respectively connected to the first cross beam 5 , and the other ends of the two longitudinal connecting beams 17 are respectively connected to the second cross beam 7 , so that the first cross beam 5 and the second cross beam 7 are connected by the two longitudinal connecting beams 17 , further increasing the bending and torsional stiffness of the rear floor 1 .

[0056] One end of two longitudinal connecting beams 17 is respectively connected to the third cross beam 10 , and the other end of the two longitudinal connecting beams 17 is respectively connected to the fourth cross beam 12 , so that the third cross beam 10 and the fourth cross beam 12 are connected by the two longitudinal connecting beams 17 , further increasing the bending and torsional stiffness of the rear floor 1 .

[0057] The longitudinal connecting beam 17 may include two longitudinally arranged connecting plates 171, and the connecting plates 171 may be vertically arranged on the bottom surface of the rear floor 1 to form the longitudinal connecting beam 17. A plurality of ribs 172 may be arranged in the channel between the two connecting plates 171, and the two ends of the ribs 172 are respectively connected to the two connecting plates 171, and the plurality of ribs 172 are sequentially arranged along the channel between the two connecting plates 171, thereby increasing the bending and torsional rigidity of the longitudinal connecting beam 17.

[0058] As an optional embodiment, Figures 8 to 9 As shown, the fourth vertical beam 13 includes a reinforcement shell 131 and a vertical rib 132 arranged on the reinforcement shell 131. The reinforcement shell 131 is formed by bulging toward the inside of the vehicle on the first side wall 2, that is, bulging toward the direction close to the second side wall 4. Two vertical ribs 132 are provided and are respectively located on the front and rear sides of the reinforcement shell 131. The vertical ribs 132 are connected to the first side wall 2, thereby increasing the connection rigidity between the reinforcement shell 131 and the first side wall 2. The top end of the reinforcement shell 131 is connected to the second connecting frame 14, and the bottom end of the reinforcement shell 131 is connected to the rear floor 1 and connected to the fourth cross beam 12, thereby strengthening the shell 131. The width of the reinforcement shell 131 increases from bottom to top, which is convenient for the transmission of bending moment and torque. A circular arc smooth transition is provided at the connection between the bottom end of the reinforcement shell 131 and the rear floor 1.

[0059] The second side wall 4 is raised toward the inside of the vehicle, that is, raised toward the direction close to the first side wall 2 to form a reinforcement shell 131. Two vertical ribs 132 are provided and are respectively located at the front and rear sides of the reinforcement shell 131. The vertical ribs 132 are connected to the second side wall 4, thereby increasing the connection rigidity between the reinforcement shell 131 and the second side wall 4. The top end of the reinforcement shell 131 is connected to the second connecting frame 14, and the bottom end of the reinforcement shell 131 is connected to the rear floor 1 and connected to the fourth crossbeam 12. The width of the reinforcement shell 131 increases from bottom to top, which is convenient for the transmission of bending moment and torque. A circular arc is provided at the connection between the bottom end of the reinforcement shell 131 and the rear floor 1 for smooth transition.

[0060] Shock absorber mounting points are provided on the reinforcement shell 131 of the fourth vertical beam 13 on the first side wall 2 and the second side wall 4 for mounting shock absorbers. Vertical reinforcement ribs 23 are provided on the first side wall 2 and the second side wall 4, and the vertical ribs 132 are connected to the vertical reinforcement ribs 23, so as to further increase the connection rigidity between the reinforcement shell 131 and the first side wall 2 or the second side wall 4.

[0061] In an optional embodiment, if Fig. 9 and Fig.10 As shown, the rear vehicle body structure also includes a mounting frame 24. At least two mounting points are provided on the mounting frame 24, and the same number of connection points are correspondingly provided on the rear floor 1. The mounting points on the mounting frame 24 and the mounting points on the rear floor 1 are connected one by one, so that the mounting frame 24 is connected to the rear floor 1. A plurality of mounting positions are provided on the mounting frame 24, and electrical components such as 12V supercapacitors, batteries, lithium batteries and domain controllers can be placed. Since the mounting frame 24 is connected to the rear floor 1 through at least two mounting points, the mounting frame 24 plays a role in strengthening the connection, thereby increasing the bending and torsional stiffness of the corresponding positions on the rear floor 1.

[0062] In a further embodiment, Fig.10 As shown, a transverse reinforcing rib groove 25 and a longitudinal reinforcing rib groove 26 are provided on the mounting frame 24, which increases the bending and torsional rigidity of the mounting frame 24, thereby further increasing the bending and torsional rigidity of the corresponding position on the rear floor 1. A plurality of transverse reinforcing rib grooves 25 and longitudinal reinforcing rib grooves 26 are provided and cross-arranged to form a cross-reinforcement structure, further increasing the bending and torsional rigidity of the mounting frame 24.

[0063] The transverse reinforcement rib groove 25 includes two transverse grooves 251 opened laterally, and a plurality of first connecting grooves 252 are opened between the two transverse grooves 251. A triangular structure is formed between two adjacent first connecting grooves 252 and the transverse groove 251. The first connecting grooves 252 are arranged in sequence between the two transverse grooves 251 to form a plurality of triangular structures, which further increases the reinforcement effect of the transverse reinforcement rib groove 25.

[0064] The longitudinal reinforcing rib groove 26 includes two longitudinal grooves opened longitudinally, and multiple second connecting grooves are opened between the two longitudinal grooves. A triangular structure is formed between two adjacent second connecting grooves and the longitudinal groove. The second connecting grooves are arranged in sequence between the two longitudinal grooves to form multiple triangular structures, which further increases the reinforcing effect of the longitudinal reinforcing rib groove 26.

[0065] When the fourth vertical beam 13 includes a reinforcing shell 131 , a mounting point can be set on the reinforcing shell 131 , and a mounting point on the mounting frame 24 is connected to the mounting point on the reinforcing shell 131 to facilitate the transmission of bending moment and torque on the mounting frame 24 .

[0066] As an optional implementation, Figures 11 to 14 As shown, the rear body structure also includes a battery pack mounting longitudinal beam 27, which is used to connect and support the battery. Two battery pack mounting longitudinal beams 27 are provided and are respectively connected to the left and right sides of the front side of the rear floor 1. The front side of the battery pack mounting longitudinal beam 27 is connected to the front body. A step groove 18 is provided on the front side of the rear floor 1, and a connecting portion 22 is provided on the rear side of the battery pack mounting longitudinal beam 27, and a step surface 19 is provided on the connecting portion 22. The connecting portion 22 on the battery pack mounting longitudinal beam 27 is inserted into the step groove 18 for connection, so that the step surface 19 on the connecting portion 22 is fitted and connected with the groove wall of the step groove 18. In this way, the connection surface between the connecting portion 22 and the step groove 18 is larger, so that the connection between the battery pack mounting longitudinal beam 27 and the rear floor 1 is more stable, the connection rigidity between the battery pack mounting longitudinal beam 27 and the rear floor 1 is increased, and the bending and torsional rigidity of the rear body structure is enhanced.

[0067] In a further embodiment, the rear vehicle body structure further includes a threshold beam 20, which is connected to the rear floor 1 and the battery pack mounting longitudinal beam 27, respectively. The threshold beam 20 is used to support the door threshold. A plurality of battery pack mounting points 21 for mounting the battery pack are provided on the bottom of the threshold beam 20. A plurality of battery pack mounting points 21 for mounting the battery pack are provided on the bottom front side of the rear floor 1. A plurality of battery pack mounting points 21 for mounting the battery pack are provided at the bottom of the battery pack mounting longitudinal beam 27.

[0068] In this arrangement, the battery pack is respectively connected to the door sill beam 20, the rear floor 1 and the battery pack mounting longitudinal beam 27 at each battery pack mounting point 21. At this time, the battery pack connects the door sill beam 20, the rear floor 1 and the battery pack mounting longitudinal beam 27 together, increasing the connection rigidity between the door sill beam 20, the rear floor 1 and the battery pack mounting longitudinal beam 27, thereby enhancing the bending and torsional stiffness of the rear body structure.

[0069] According to an embodiment of the present application, on the other hand, a vehicle is provided, comprising any of the above rear body structures.

[0070] The horizontal direction is the front-to-back direction of the vehicle body, the longitudinal direction is the left-right direction of the vehicle body, and the vertical direction is the up-down direction of the vehicle body.

[0071] Although the embodiments of the present application are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the present application.

Claims

1. A rear vehicle body structure, characterized in that: include: A rear floor (1), a first side enclosure (2), a roof beam (3) and a second side enclosure (4) are sequentially connected to form a ring structure, wherein: The rear floor (1) is provided with a first cross beam (5) and a second cross beam (7), the first side enclosure (2) and the second side enclosure (4) are both provided with a first vertical beam (6) and a second vertical beam (8), the first cross beam (5), the first vertical beam (6) on the first side enclosure (2), the top cover beam (3) and the first vertical beam (6) on the second side enclosure (4) are sequentially connected to form a first annular beam structure; The second cross beam (7), the second vertical beam (8) and the first vertical beam (6) on the first side frame (2), the top cover beam (3), the first vertical beam (6) and the second vertical beam (8) on the second side frame (4) are sequentially connected to form a second annular beam structure.

2. The rear vehicle body structure according to claim 1, characterized in that: A third cross beam (10) is arranged on the rear side of the rear floor (1), and a third vertical beam (11) is arranged on the rear sides of the first side enclosure (2) and the second side enclosure (4); the third cross beam (10), the third vertical beam (11) on the first side enclosure (2), the top cover beam (3) and the third vertical beam (11) on the second side enclosure (4) are sequentially connected to form a third annular beam structure; A fourth cross beam (12) is arranged on the rear floor (1), and a fourth vertical beam (13) is arranged on each of the first side enclosure (2) and the second side enclosure (4); the fourth vertical beam (13) is connected to the third vertical beam (11) via a second connecting frame (14); the fourth cross beam (12), the fourth vertical beam (13) and the third vertical beam (11) on the first side enclosure (2), the top cover beam (3), the third vertical beam (11) and the fourth vertical beam (13) on the second side enclosure (4) are sequentially connected to form a fourth annular beam structure.

3. The rear vehicle body structure according to claim 2, characterized in that: A plurality of cross beam plates (15) are transversely arranged on the rear floor (1), and the cross beam plates (15) are arranged in groups of two. Each group of the cross beam plates (15) respectively forms the first cross beam (5), the second cross beam (7) and the fourth cross beam (12). At least two supporting ribs (16) are arranged between each group of the cross beam plates (15), and two adjacent supporting ribs (16) and the cross beam plates (15) are combined to form a triangular reinforcement structure.

4. The rear vehicle body structure according to claim 2, characterized in that: The rear floor (1) is also provided with a plurality of longitudinal connecting beams (17), the first cross beam (5) and the second cross beam (7) are connected via the longitudinal connecting beams (17), and the second cross beam (7) and the third cross beam (10) are connected via the longitudinal connecting beams (17).

5. The rear vehicle body structure according to claim 2, characterized in that: The fourth vertical beam (13) comprises a reinforcing shell (131) and vertical ribs (132) arranged on the reinforcing shell (131); the width of the reinforcing shell (131) increases from bottom to top; the top end of the reinforcing shell (131) is connected to the second connecting frame (14); the bottom end of the reinforcing shell (131) is connected to the fourth cross beam (12); two vertical ribs (132) are arranged; the two vertical ribs (132) are respectively located on two sides of the reinforcing shell (131); and the vertical ribs (132) are connected to the first side enclosure (2) or the second side enclosure (4).

6. The rear vehicle body structure according to claim 1, characterized in that: Also includes: The mounting frame (24) is provided with at least two mounting points, wherein the mounting points are connected to the rear floor (1), and the mounting frame (24) is suitable for mounting electrical components.

7. The rear vehicle body structure according to claim 6, characterized in that: The mounting frame (24) is provided with a transverse reinforcing rib groove (25) and a longitudinal reinforcing rib groove (26), and the transverse reinforcing rib groove (25) and the longitudinal reinforcing rib groove (26) are arranged crosswise.

8. The rear vehicle body structure according to claim 1, characterized in that: It also includes a battery pack mounting longitudinal beam (27) for mounting a battery pack, the rear floor (1) is provided with a stepped groove (18), the battery pack mounting longitudinal beam (27) is provided with a connecting portion (22) having a stepped surface (19), the connecting portion (22) is inserted into the stepped groove (18), and the stepped surface (19) is closely connected to the groove wall of the stepped groove (18).

9. The rear vehicle body structure according to claim 8, characterized in that: The vehicle also includes a door sill beam (20) for supporting a door sill, wherein the door sill beam (20) is respectively connected to the rear floor (1) and the battery pack mounting longitudinal beam (27), and a battery pack mounting point (21) for mounting a battery pack is provided on the battery pack mounting longitudinal beam (27), the door sill beam (20) and the rear floor (1).

10. A vehicle, characterized in that: include: The rear vehicle body structure according to any one of claims 1 to 9.

Images