vehicle

Abstract

A vehicle comprising a rear longitudinal beam assembly (410) provided with a mounting structure, a strut assembly, and a rear subframe (80) connected to the bottom of the rear longitudinal beam assembly (410) by the mounting structure, wherein one end of the strut assembly is connected to the rear longitudinal beam assembly (410), the other end of the strut assembly is connected to the occupant compartment (20), and the end of the rear longitudinal beam assembly (410) is connected to the occupant compartment (20) so that the rear impact force received by the vehicle can be distributed, thereby improving the overall impact strength of the vehicle.

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims the priority of Chinese Patent Application No. 202310439713.7, titled "VEHICLE", filed by BYD Company Limited on April 18, 2023, which is incorporated herein by reference in its entirety.

[0002] This application relates to the technical field of vehicle body structures, and more particularly, to vehicles.

Background Art

[0003] In the prior art, the body structure of a sports car is generally made of conventional metal materials. Due to the significantly reduced size of the body structure, the structural size of the rear part of the vehicle body is further reduced, which reduces the impact resistance of the body structure and affects the driving safety of the sports car.

Summary of the Invention

[0004] This application is intended to at least somewhat solve one of the technical problems in the related art.

[0005] For this purpose, this application provides a vehicle.

[0006] The vehicle provided in one embodiment of this application includes a rear longitudinal beam assembly provided with a mounting structure, a strut assembly, and a rear sub - frame. The rear sub - frame is connected to the bottom of the rear longitudinal beam assembly through the mounting structure. One end of the strut assembly is connected to the rear longitudinal beam assembly, the other end of the strut assembly is connected to the passenger compartment, and the end of the rear longitudinal beam assembly is connected to the passenger compartment.

[0007] Therefore, the rear subframe, rear longitudinal beam assembly, and strut assembly can distribute the rear impact forces acting on the vehicle, thereby improving the overall impact resistance of the vehicle.

[0008] Further aspects and advantages of this application are described in part in the following description, and in part become apparent from the following description or through practice of this application. [Brief explanation of the drawing]

[0009] [Figure 1] This is a side view of a vehicle according to one embodiment of the present application. [Figure 2] This is a first perspective view of a vehicle according to one embodiment of the present application. [Figure 3] This is a partial perspective view of a vehicle according to one embodiment of this application. [Figure 4] This is a partial perspective view of a single side of a vehicle according to one embodiment of the present application. [Figure 5] This is a second perspective view of a vehicle according to one embodiment of the present application. [Figure 6] This is a side view of a vehicle according to one embodiment of the present application. [Figure 7] This is a third perspective view of a vehicle according to one embodiment of the present application. [Figure 8] This is a cross-sectional view of plan AA in Figure 7. [Figure 9] This is a fourth perspective view of a vehicle according to one embodiment of the present application. [Modes for carrying out the invention]

[0010] Embodiments of this application are described in detail below, examples of which are shown in the accompanying drawings, and throughout the drawings, the same or similar reference numerals represent the same or similar elements, or elements having the same or similar function. The embodiments described below with reference to the accompanying drawings are illustrative and intended to illustrate this application, and should not be construed as limiting this application.

[0011] Referring to Figures 1 and 2, one embodiment of the present application provides a vehicle. The vehicle is used in a two-door sports car. The vehicle includes a rear longitudinal beam assembly 410 and strut assemblies, and a rear subframe 80, the rear subframe 80 being connected to the bottom of the rear longitudinal beam assembly 410 via the mounting structure, one end of the strut assemblies being connected to the rear longitudinal beam assembly 410, the other end of the strut assemblies being connected to the passenger compartment 20, and one end of the rear longitudinal beam assembly 410 being connected to the passenger compartment 20.

[0012] A vehicle has a length direction, a width direction, and a height direction. The length direction of the vehicle may be the X direction in the figure, the width direction of the vehicle may be the Y direction in the figure, and the height direction of the vehicle may be the Z direction in the figure.

[0013] In a symmetrical vehicle, the rear subframe 80, the rear longitudinal beam assembly 410, and the strut assembly form three force transmission paths in the vehicle's single-sided structure. The rear subframe 80 can transmit force from the rear tires when the lower part is subjected to impact, thereby enabling force transmission in the lower force transmission structure. The rear longitudinal beam assembly 410 in the intermediate layer can mitigate impact forces transmitted directly to the occupant compartment 20, and the strut assembly in the upper layer can also disperse impact forces transmitted to the occupant compartment 20.

[0014] The force transmission paths in the upper, middle, and lower parts of the vehicle allow the impact energy generated when the rear part of the vehicle is struck to be distributed and transmitted to the passenger compartment. This avoids malfunctions in the passenger compartment caused by excessive localized stress, improves the vehicle's impact resistance, and ensures the safety of the passengers inside the passenger compartment.

[0015] The vehicle provided in the embodiments of this application includes a rear longitudinal beam assembly 410 and strut assemblies, and a rear subframe 80, the rear subframe 80 being connected to the bottom of the rear longitudinal beam assembly via the mounting structure, one end of the strut assemblies being connected to the rear longitudinal beam assembly, and the other end of the strut assemblies being connected to the occupant compartment. The rear subframe 80, the rear longitudinal beam assembly 410, and the strut assemblies can distribute rear impact forces acting on the vehicle, thereby improving the overall impact resistance of the vehicle.

[0016] In addition, the rear subframe 80 can provide mounting points for the rear motor and the rear subframe swing arm. The rear subframe 80 is integrally cast so that it can be formed into an irregular subframe structure. Within the constraints of the irregular structural design space, the strength of the mounting points for the rear motor and the mounting points for the rear subframe swing arm can be ensured so that the structural mechanical performance and dimensional accuracy of the rear subframe 80 are improved and the impact resistance of the vehicle is enhanced, thereby ensuring the rigidity of the rear subframe 80.

[0017] The rear subframe 80 is connected to the bottom of the rear longitudinal beam assembly 410 via a mounting structure to facilitate the installation and disassembly of the rear subframe 80. The independent molding of the rear subframe 80 allows for adaptation to various motor assemblies, and various rear subframes can be fitted without changing the frame structure in the upper part of the vehicle.

[0018] The rear subframe 80 is integrally cast and connected to the rear longitudinal beam assembly 410 via mounting structures. The integral casting of the rear subframe 80 ensures the strength of the mounting points on the rear subframe 80 so as to enhance the structural mechanical performance and dimensional accuracy of the rear subframe 80, and to improve the impact resistance of the vehicle.

[0019] The aforementioned rear longitudinal beam assembly 410 and the rear subframe 80 show the left rear longitudinal beam assembly and the left rear subframe on the left side of the vehicle. Due to the left-right symmetry of the body structure, on the right side of the body structure, there are provided a right rear longitudinal beam assembly and a right rear subframe that are symmetrical to the left rear longitudinal beam assembly and the left rear subframe. Further, based on the symmetry of the vehicle shown in the attached drawings of this application, although the left-hand version and the right-hand version are not distinguished in this specification, the components having a left-right symmetrical structure further fall within the protection scope of this application.

[0020] Referring to FIG. 2, the vehicle includes a rear wheel housing 451. The strut assembly includes a rear wheel housing rear strut 452 and a rear wheel housing front strut I431. The rear wheel housing 451 is connected to the rear longitudinal beam assembly 410, and the rear wheel housing 451 is connected to the rear longitudinal beam assembly 410 via the rear wheel housing rear strut 452. The rear wheel housing 451 is connected to the passenger compartment 20 via the rear wheel housing front strut I431.

[0021] In the longitudinal direction of the vehicle, the rear subframe 80 constitutes the lower layer force transmission structure of the vehicle. The rear longitudinal beam assembly 410 constitutes the intermediate layer force transmission structure of the vehicle. The rear wheel housing rear strut 452, the rear wheel housing front strut I431, and the rear wheel housing 451 constitute the upper layer force transmission structure of the vehicle.

[0022] In a bilaterally symmetric vehicle, three force transmission paths are used in one-sided structures of the vehicle, and the rear subframe 80 can transmit the force transmitted from the rear tire when the lower part is impacted, and implement the force transmission of the lower-layer force transmission structure. The middle-layer force transmission structure transmits the impact force to the rear longitudinal beam 411 via the rear bumper beam 421 and the rear energy absorption box 422 in the rear longitudinal beam assembly 410, and then transmits it to the passenger compartment 20 via the rear longitudinal beam connection part 414. The upper-layer force transmission structure transmits the impact force to the rear wheel housing 451 via the rear wheel housing rear strut 452, and then transmits it to the passenger compartment 20 via the front strut I 431 of the rear wheel housing.

[0023] The upper, middle, and lower force transmission paths of the vehicle enable the impact energy generated when the rear part of the vehicle is impacted to be dispersedly transmitted to the passenger compartment, thereby avoiding defects in the passenger compartment caused by excessive local stress, improving the impact resistance of the vehicle, and ensuring the safety of the passengers in the passenger compartment.

[0024] The rear longitudinal beam assembly 410 is offset from at least a part of the strut assembly in the height direction of the vehicle.

[0025] Referring to FIG. 1, in the height direction of the vehicle, the strut assembly is higher than the rear longitudinal beam assembly 410 so that the rear longitudinal beam assembly 410 can mitigate the impact force transmitted from the middle part to the passenger compartment when the middle part of the vehicle is impacted from the rear, and so that the strut assembly can mitigate the impact force transmitted from the upper part to the passenger compartment when the upper part of the vehicle is impacted from the rear. Further, the vertical cooperation between the rear longitudinal beam assembly 410 and the strut assembly can disperse the impact force when the rear part of the vehicle is impacted, and ensure the structural integrity of the passenger compartment.

[0026] Referring to Figure 2, the vehicle includes a rear bumper-beam assembly 420. The rear bumper-beam assembly 420 is connected to the occupant compartment 20 via a rear long lateral beam assembly 410.

[0027] The rear long lateral beam assembly 410 may include a rear long lateral beam 411 and a rear long lateral beam connector 414. The rear bumper beam assembly 420 may include a rear bumper beam 421 and a rear energy absorption box 422. The rear frame 40 of the vehicle body is first connected to the rear bumper beam 421 and rear energy absorption box 422 from the tail of the vehicle, then connected forward to the lower part of the occupant compartment 20 via the rear long lateral beam 411 and rear long lateral beam connector 414, and further connected diagonally upward to the upper part of the occupant compartment 20 via the rear wheel housing rear strut 452, rear wheel housing 451, and rear wheel housing front strut I431, forming the upper frame of the vehicle and dispersing the impact forces transmitted through the rear bumper beam assembly 420.

[0028] Referring to Figures 2 and 3, the rear long lateral beam assembly 410 includes a rear long lateral beam 411 and a rear long lateral beam connector 414. The rear end of the rear long lateral beam 411 is connected to the rear bumper beam assembly 420. The front end of the rear long lateral beam 411 is connected to the crew compartment 20 via the rear long lateral beam connector 414.

[0029] The mounting structure includes a front subframe mounting point 414a, a rear subframe connector 417, and a rear subframe rear mounting base 466. The front subframe mounting point 414a is located on the rear long lateral beam connecting portion 414. The rear subframe connector 417 connects to the rear long lateral beam 411 and faces the rear wheel housing 451. The rear subframe rear mounting base 466 connects to the rear end of the rear long lateral beam 411.

[0030] If the rear subframe 80 is integrally cast, the rear subframe 80 is connected to the vehicle via front mounting points, intermediate mounting points, and rear mounting points formed by the front subframe mounting point 414a, the rear subframe connector 417, and the rear subframe rear mounting base 466. The front portion of the rear subframe 80 is mounted at the front mounting point 414a on the rear long lateral beam connecting portion 414. The intermediate portion of the rear subframe 80 is located below the rear wheel housing 451 and is connected to the rear frame of the vehicle body via the rear subframe connector 417. The rear portion of the rear subframe 80 is connected to the rear subframe rear mounting base 466.

[0031] The upper portion of the rear longitudinal beam connecting section 414 is coplanar with the upper surface of the rear longitudinal beam 411. The lower portion of the rear longitudinal beam connecting section 414 provides the front mounting point 414a of the subframe and the rear mounting point 414b of the battery pack. As a result, the battery pack, the occupant compartment, and the rear subframe can be connected to each other via the rear longitudinal beam connecting section 414, which plays a role in mutual support and force transmission so as to significantly improve the rigidity of the vehicle.

[0032] Referring to Figure 4, the rear strut 452 of the rear wheel housing is a cylindrical beam strut, and its two ends are formed into a first flat structure and a second flat structure, respectively. The rear strut 452 of the rear wheel housing is connected to the rear side of the rear wheel housing 451 via the first flat structure. The rear strut 452 of the rear wheel housing is connected to the rear end of the rear longitudinal beam 411 via the second flat structure.

[0033] The rear strut 452 of the rear wheel housing uses a cylindrical beam structure, and the two ends of the rear strut 452 of the rear strut 452 of the rear strut 452 are flattened by an extrusion method to form a first flat structure and a second flat structure so that direct mounting can be achieved via the mounting surfaces of the first flat structure and the second flat structure, thereby reducing the number of connecting parts required at the two ends of the rear strut 452 of the rear strut 452 of the rear strut 452.

[0034] Referring to Figure 4, the front portion of the rear wheel housing rear strut 452 is attached to the rear side of the rear wheel housing 451, with the rear mounting point positioned on the top surface of the rear wheel housing 451 and close to the shock absorber mounting point. The rear portion of the rear wheel housing rear strut 452 is attached downward to the rear end of the rear longitudinal beam 411, and the mutual support between the rear longitudinal beam 411 and the rear wheel housing 451 is formed by the rear wheel housing rear strut 452, which reduces the risk of the rear longitudinal beam 411 bouncing up when subjected to a rearward impact.

[0035] Referring to Figure 5, the vehicle further includes a reinforcing beam 230. The rear longitudinal beam coupling 414 includes a left rear longitudinal beam coupling and a right rear longitudinal beam coupling. The reinforcing beam 230 is connected between the left rear longitudinal beam coupling and the right rear longitudinal beam coupling and to the occupant compartment 20.

[0036] The reinforcing beam 230 is connected to the rear of the occupant compartment 20 and may be coplanar with the rear longitudinal beam connection 414. The two ends of the reinforcing beam 230 are inserted laterally into the left rear longitudinal beam connection and the right rear longitudinal beam connection to form a lateral reinforcing path, through which the rear longitudinal beam transmits force to the occupant compartment, thereby increasing the structural strength of the vehicle.

[0037] The vehicle further includes a rear frame rear beam 464. The rear subframe rear mounting base 466 includes a left rear subframe rear mounting base and a right rear subframe rear mounting base. The rear frame rear beam 464 is connected between the left rear subframe rear mounting base and the right rear subframe rear mounting base.

[0038] The rear frame rear beam 464 is designed to be positioned laterally between the left rear subframe rear mounting base and the right rear subframe rear mounting base. This ensures lateral stability of the rear portion of the rear frame 40 and reliable lateral force transmission, as well as increasing the lateral rigidity and inching stiffness of the rear subframe rear mounting base 466, thereby improving the overall NHV performance of the vehicle.

[0039] Referring to Figure 5, the vehicle further includes a rear wheel housing stabilizer bar 463. The rear wheel housing 451 includes the left rear wheel housing and the right rear wheel housing. The rear wheel housing stabilizer bar 463 is connected between the left rear wheel housing and the right rear wheel housing.

[0040] The rear wheel housing stabilizer bar 463 is designed between the left and right rear wheel housings, and its cross-sectional dimension in the Z direction is large. The height dimension of the rear wheel housing stabilizer bar 463 in the Z direction is 2 / 3 of the distance in the Z direction between the top surface of the rear wheel housing 451 and the rear longitudinal beam 411, so that the entire rear wheel housing 451 is effectively supported and the lateral rigidity of the rear wheel housing 451 is improved.

[0041] In this case, the upper surface of the rear wheel housing stabilizer bar 463 is coplanar with the top surface of the rear wheel housing 451 in the Z direction, so that the lateral load of the rear subframe 80 can be efficiently transmitted through the mounting points on the top surface of the rear wheel housing 451, thereby improving the torsional rigidity of the vehicle.

[0042] Referring to Figure 6, the vehicle further includes a rear wheel housing front strut II 432 and a rear wheel housing front strut III 433. The upper ends of the rear wheel housing front strut II 432 and the rear wheel housing front strut III 433 are connected to the two ends of the rear wheel housing front strut I 431, respectively, and the lower ends of the rear wheel housing front strut II 432 and the rear wheel housing front strut III 433 are connected to the rear long lateral beam connecting portion 414 via a triangular frame mounting plate 434. As a result, the rear wheel housing front strut I 431, the rear wheel housing front strut II 432, and the rear wheel housing front strut III 433 form a triangular frame.

[0043] The rear wheel housing front struts I431, II432, and III433 form a stable triangular frame. The front portion of the triangular frame is connected to the upper coupling portion of the occupant compartment. The lower portion of the triangular frame is attached to the rear longitudinal beam coupling portion 414 via the triangular frame mounting plate 434. The rear portion of the triangular frame is attached to the rear wheel housing 451. The rear wheel housing front struts II432 and III433 are tilted forward and rearward, respectively, towards the overlapping coupling portion of the occupant compartment and the rear wheel housing 451 by the triangular frame mounting plate 434 to enhance the rigidity of the connection points of the rear wheel housing front struts II432 and III433.

[0044] In addition, the triangular frame integrates the rear wheel housing 451 with the occupant compartment and the rear long lateral beam connecting section 414, thereby improving the torsional rigidity of the rear wheel housing 451. In this case, the triangular frame further connects two force transmission paths, which are the intermediate and upper load transmission sections of the vehicle body, ensuring the structural stability of the rear section of the rear frame when the vehicle is subjected to impact.

[0045] Referring to Figures 7 and 8, the vehicle further includes a rear beam of the occupant compartment top frame. The rear wheel housing front struts I431 include a left rear wheel housing front strut I and a right rear wheel housing front strut I. The left rear wheel housing front strut I and the right rear wheel housing front strut I are connected opposite each other to the two ends of the occupant compartment top frame rear beam and the rear wheel housing stabilizer bar 463, such that the occupant compartment top frame rear beam, the left rear wheel housing front strut I, the right rear wheel housing front strut I, and the rear wheel housing stabilizer bar 463 form a rectangular rigid ring.

[0046] Referring to Figure 8, the rear beam of the occupant compartment top frame is enclosed by an upper cover plate 20a and a lower cover plate 20b of the rear beam of the occupant compartment top frame, such that a closed cavity is formed within the rear beam of the occupant compartment top frame, spanning between the left front strut I of the rear wheel housing, the right front strut I of the rear wheel housing, and the occupant compartment connection. The rear beam of the occupant compartment top frame, the front struts I 431 of the rear wheel housing, and the rear wheel housing stabilizer bar 463 form a rectangular rigid ring in the upper portion of the rear frame, and the closed rectangular rigid ring reinforces the torsional rigidity of the vehicle.

[0047] Referring to Figure 9, the vehicle further includes a rear frame stabilizer bar assembly 440. The rear frame stabilizer bar assembly 440 includes a rear frame stabilizer bar I 441, a rear frame stabilizer bar II 442, and a rear frame stabilizer bar III 443. The rear frame stabilizer bar II 442 and the rear frame stabilizer bar III 443 are connected to both sides of the rear frame stabilizer bar I 441 so that the rear frame stabilizer bar assembly 440 is formed into an X-shaped structure.

[0048] The front end of the X-shaped structure is connected to the front strut I of the left rear wheel housing and the front strut I of the right rear wheel housing, respectively, while the rear end of the X-shaped structure is connected to the left rear wheel housing and the right rear wheel housing, respectively.

[0049] The rear frame stabilizer bar assembly 440 provided in the embodiments of this application can improve the handling of the vehicle. The rear frame stabilizer bar assembly 440 is similar to a rectangular diagonal cross structure. The upper portion of the rear frame stabilizer bar assembly 440 is connected to the rear wheel housing front strut I431 and is close to the position of the overlapping connection between the rear wheel housing front strut I431 and the passenger compartment. The lower portion of the rear frame stabilizer bar assembly 440 is connected to the rear wheel housing 451 and is close to the position of the overlapping connection between the rear wheel housing front strut I431 and the rear wheel housing.

[0050] Referring to Figure 9, the rear frame stabilizer bar assembly 440 includes a full circular beam rear frame stabilizer bar I 441, two shorter circular rear frame stabilizer bars II 442, each having half the length of the full circular beam rear frame stabilizer bar, and a rear frame stabilizer bar III 443. The center of the rear frame stabilizer bar assembly is welded together via a rear frame stabilizer bar weld plate 444 to improve the stability of the rear frame stabilizer bar assembly 440.

[0051] Therefore, the overall rigidity of the vehicle is improved by the structure of the rear frame stabilizer bar assembly 440. When the vehicle is in motion, the torsional load generated by the rear shock absorbers can eventually be transmitted to the body and passenger compartment, and the body can move together with the rear subframe to reduce the lateral sway of the rear frame 40 relative to the rear subframe 80, thereby improving the vehicle's maneuverability.

[0052] In this application, unless expressly specified and limited otherwise, the presence of a first feature "on" or "under" a second feature may mean that the first and second features are in direct contact or indirect contact through an intermediate medium. Furthermore, the presence of a first feature "on," "above," and "on the upper side of" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher elevation than the second feature. The presence of a first feature "under," "below," and "on the lower side of" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicate that the first feature is at a lower elevation than the second feature.

[0053] In this specification, any description of “one embodiment,” “several embodiments,” “example,” “specific example,” or “several examples” means that the specific features, structures, materials, or properties described in relation to that embodiment or example are included in at least one embodiment or example of this application. In this specification, the general expressions of the foregoing terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or properties described may be combined in appropriate manner in any one or more embodiments or examples. In addition, a person skilled in the art can combine and link the various embodiments or examples and the features of the various embodiments or examples described herein, provided that they do not conflict with each other.

[0054] Although embodiments of this specification have been shown and described above, it can be understood that the embodiments described herein are illustrative and should not be construed as limiting this application. Those skilled in the art can modify, alter, replace, and transform the embodiments described above within the scope of this application.

Claims

1. Rear long lateral beam assembly, strut assembly, and rear subframe Equipped with, The rear long beam assembly is provided with a mounting structure, The rear subframe is connected to the bottom of the rear longitudinal beam assembly via the mounting structure, one end of the strut assembly is connected to the rear longitudinal beam assembly, and the other end of the strut assembly is connected to the occupant compartment. A vehicle in which the end of the rear long lateral beam assembly is connected to the occupant compartment.

2. The vehicle according to claim 1, comprising a rear wheel housing, wherein the strut assembly comprises a rear strut for the rear wheel housing and a front strut I for the rear wheel housing, the rear wheel housing is connected to the rear longitudinal beam assembly, the rear wheel housing is connected to the rear longitudinal beam assembly via the rear strut for the rear wheel housing, and the rear wheel housing is connected to the occupant compartment via the front strut I for the rear wheel housing.

3. The vehicle according to claim 1 or 2, wherein the rear longitudinal beam assembly is offset from at least a portion of the strut assembly in the height direction of the vehicle.

4. It comprises a rear bumper beam assembly, the rear bumper beam assembly being connected to the occupant compartment via the rear long lateral beam assembly, the rear long lateral beam assembly comprising a rear long lateral beam and a rear long lateral beam connecting portion, the rear end of the rear long lateral beam being connected to the rear bumper beam assembly, and the front end of the rear long lateral beam being connected to the occupant compartment via the rear long lateral beam connecting portion, The vehicle according to claim 2, wherein the mounting structure comprises a front subframe mounting point, a rear subframe connector, and a rear subframe rear mounting base, the front subframe mounting point being positioned on the rear longitudinal beam connecting portion, the rear subframe connector being connected to the rear longitudinal beam and facing the rear wheel housing, and the rear subframe rear mounting base being connected to the rear end of the rear longitudinal beam.

5. The vehicle according to claim 4, wherein the rear strut of the rear wheel housing is a cylindrical beam strut, and the two ends of the rear strut of the rear wheel housing are formed into a first flat structure and a second flat structure, respectively, the rear strut of the rear wheel housing is connected to the rear side of the rear wheel housing via the first flat structure, and the rear strut of the rear wheel housing is connected to the rear end of the rear longitudinal beam via the second flat structure.

6. The vehicle according to claim 4 or 5, further comprising a reinforcing beam, wherein the rear longitudinal beam connection portion comprises a left rear longitudinal beam connection portion and a right rear longitudinal beam connection portion, and the reinforcing beam is connected between the left rear longitudinal beam connection portion and the right rear longitudinal beam connection portion and to the occupant compartment.

7. The vehicle according to any one of claims 4 to 6, further comprising a rear frame rear beam, wherein the rear subframe rear mounting base comprises a left rear subframe rear mounting base and a right rear subframe rear mounting base, and the rear frame rear beam is connected between the left rear subframe rear mounting base and the right rear subframe rear mounting base.

8. The vehicle according to any one of claims 4 to 7, further comprising a rear wheel housing stabilizer bar, wherein the rear wheel housing comprises a left rear wheel housing and a right rear wheel housing, and the rear wheel housing stabilizer bar is connected between the left rear wheel housing and the right rear wheel housing.

9. The vehicle according to any one of claims 4 to 8, further comprising a rear wheel housing front strut II and a rear wheel housing front strut III, wherein the upper ends of the rear wheel housing front strut II and the rear wheel housing front strut III are respectively connected to the two ends of the rear wheel housing front strut I, and the lower ends of the rear wheel housing front strut II and the rear wheel housing front strut III are connected to the rear longitudinal beam connecting portion via a triangular frame mounting plate, so that the rear wheel housing front strut I, the rear wheel housing front strut II, and the rear wheel housing front strut III form a triangular frame.

10. The vehicle according to claim 8, further comprising a rear beam of the occupant compartment top frame, wherein the front strut I of the rear wheel housing comprises a left front strut I and a right front strut I, and the left front strut I and the right front strut I are connected opposite to the two ends of the rear beam of the occupant compartment top frame and the rear wheel housing stabilizer bar such that the rear beam of the occupant compartment top frame, the left front strut I, the right front strut I, and the rear wheel housing stabilizer bar form a rectangular rigid ring.

11. The rear frame stabilizer bar assembly further comprises a rear frame stabilizer bar I, a rear frame stabilizer bar II, and a rear frame stabilizer bar III, wherein the rear frame stabilizer bar II and the rear frame stabilizer bar III are connected to both sides of the rear frame stabilizer bar I to form an X-shaped structure. The vehicle according to claim 10, wherein the front end of the X-shaped structure is separately connected to the front strut I of the left rear wheel housing and the front strut I of the right rear wheel housing, and the rear end of the X-shaped structure is separately connected to the left rear wheel housing and the right rear wheel housing.

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