Rear body assembly and vehicle

Abstract

The application relates to the technical field of vehicles, and discloses a rear vehicle body assembly and a vehicle.The rear vehicle body assembly comprises a rear vehicle body, the rear vehicle body comprises a rear vehicle body frame, the rear vehicle body frame comprises a vehicle body bottom, a vehicle body top and two vehicle body sides, the vehicle body side comprises a side wall and a tower package, the side wall is located above the tower package and is fixedly connected with the tower package, a support structure is arranged between the two vehicle body sides and is fixedly connected with the rear vehicle body frame, the support structure is used for supporting the rear vehicle body frame, and a first connecting support is connected between the tower package and the support structure.According to the rear vehicle body assembly provided by the application, the support structure is arranged, the risk of deformation of the rear vehicle body frame is reduced, the structural strength and the impact resistance of the rear vehicle body frame are improved, the structural integrity of the rear vehicle body frame is ensured, and the collision safety of the vehicle is improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a rear body assembly and a vehicle having the rear body assembly. Background Technology

[0002] In related technologies, the structural strength and impact resistance of the rear body frame of existing vehicles equipped with corner module technology are insufficient. When the vehicle is hit, the rear body frame is prone to deformation, which affects the structural integrity of the rear body frame and the collision safety of the vehicle, making it difficult for the rear body frame to meet the safety requirements of the vehicle. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a rear vehicle assembly that improves the structural strength and impact resistance of the rear vehicle frame, helps ensure the structural integrity of the rear vehicle frame, and enhances vehicle collision safety.

[0004] The present invention further proposes a vehicle having the above-described rear body assembly.

[0005] According to a first aspect embodiment of the present invention, the rear body assembly includes: a rear body, the rear body including a rear body frame, the rear body frame including a bottom of the body, a top of the body and two side portions of the body, the two side portions of the body being opposite to and spaced apart in the left-right direction of the rear body, the bottom of the body and the top of the body being connected between the two side portions of the body, the bottom of the body being located below the top of the body, the side portions of the body including: a side panel and a tower block, the side panel being located above the tower block and fixedly connected to the tower block; a support structure, the support structure being disposed between the two side portions of the body and fixedly connected to the rear body frame, the support structure being used to support the rear body frame; and a first connecting bracket, the first connecting bracket being connected between the tower block and the support structure.

[0006] According to the first aspect of the present invention, the rear body assembly, by providing a support structure, helps to reduce the risk of deformation of the rear body frame, improves the structural strength and impact resistance of the rear body frame, ensures the structural integrity of the rear body frame, and improves the collision safety of the vehicle. By providing a first connecting bracket, the connection stiffness between the tower pack and the support structure can be improved, and the connection strength between the side of the vehicle body and the support structure can be improved, thereby enhancing the structural stability of the rear body frame. When the vehicle collides, the tower pack and the support structure can transfer loads to each other through the first connecting bracket, which helps to reduce the risk of stress concentration in the rear body assembly, improves the impact resistance of the rear body assembly, and further improves the collision safety of the vehicle.

[0007] In some examples of the present invention, the tower bag includes: a tower bag body and a tower bag extension structure, the tower bag extension structure being connected between the tower bag body and the side wall, and a first connecting bracket being connected between the tower bag body and the support structure.

[0008] In some examples of the present invention, the support structure includes: two first support beams, both of which extend obliquely in the vertical direction, the two first support beams are intersecting and fixedly connected, and the end of each first support beam is fixedly connected to the rear vehicle frame.

[0009] In some examples of the present invention, a top longitudinal beam is formed at the connection between the top of the vehicle body and the two sides of the vehicle body, and the upper ends of the two first support beams are respectively fixedly connected to the two top longitudinal beams.

[0010] In some examples of the present invention, the lower ends of the two first support beams are respectively fixedly connected to two towers; and / or the lower ends of the two first support beams are fixed to the bottom of the vehicle body.

[0011] In some examples of the present invention, the rear body assembly further includes a connecting beam, and the tower pack includes a tower pack body and a tower pack extension structure, the tower pack extension structure being connected between the tower pack body and the side panel, and the connecting beam being connected between the tower pack bodies of the two tower packs.

[0012] In some examples of the present invention, the rear vehicle assembly further includes: a reinforcing frame, a reinforcing frame provided between two vehicle sides, a reinforcing frame fixed to at least one vehicle side, and the reinforcing frame being fixed to the bottom of the vehicle.

[0013] In some examples of the present invention, the rear vehicle assembly further includes a second connecting bracket, the tower pack includes a tower pack body and a tower pack extension structure, the tower pack extension structure is connected between the tower pack body and the side panel, and the second connecting bracket is provided on at least one side of the tower pack body in the front-rear direction, the second connecting bracket being connected between the reinforcing frame and the tower pack body.

[0014] In some examples of the present invention, the reinforcing frame includes: a first longitudinal beam, a second longitudinal beam, and a plurality of second support beams. The second support beams extend along the vertical direction of the rear vehicle body. The first longitudinal beam is positioned at a height higher than the second longitudinal beam and is spaced apart from it. The first longitudinal beam is fixed to the side of the vehicle body, and the second longitudinal beam is fixed to the bottom of the vehicle body. The plurality of second support beams are arranged along the longitudinal direction of the rear vehicle body and are all connected between the first longitudinal beam and the second longitudinal beam.

[0015] In some examples of the present invention, there are two second support beams, and the tower bag includes: a tower bag body and a tower bag extension structure, the tower bag extension structure being connected between the tower bag body and the side wall, at least a portion of one second support beam being located on the front side of the tower bag body, and at least a portion of the other second support beam being located on the rear side of the tower bag body.

[0016] In some examples of the present invention, the second longitudinal beam is also fixed to the tower package.

[0017] In some examples of the present invention, the side wall includes a C-pillar and a D-pillar, and the first longitudinal beam is fixedly connected to both the C-pillar and the D-pillar.

[0018] In some examples of the present invention, the rear vehicle assembly further includes: a first connecting beam; the tower pack includes: a tower pack body and a tower pack extension structure, the tower pack extension structure being connected between the tower pack body and the side panel; a first longitudinal beam is located above the tower pack body; and the first connecting beam is fixed to the inner surface of the tower pack extension structure and connected between the first longitudinal beam and the tower pack body.

[0019] In some examples of the present invention, the rear body assembly further includes a second connecting beam fixed to the inner surface of the tower pack extension structure, and the second connecting beam connects the tower pack body and at least one second support beam.

[0020] In some examples of the present invention, the rear body assembly further includes: a reinforcing longitudinal beam located below and fixed to the bottom of the body, and the rear body also includes a rear energy-absorbing structure located behind the reinforcing longitudinal beam, the rear end of the reinforcing longitudinal beam being fixedly connected to the rear energy-absorbing structure.

[0021] In some examples of the present invention, there are two reinforcing longitudinal beams, which extend along the lower edge of the towers on the two sides of the vehicle body.

[0022] In some examples of the present invention, the rear vehicle assembly further includes: a bottom frame structure located below and fixed to the rear vehicle body, the bottom frame structure including: a frame body and a reinforcing structure, the frame body including two frame longitudinal beams and two frame transverse beams, the two frame longitudinal beams being opposite to and spaced apart along the left-right direction of the rear vehicle body, the two frame transverse beams being spaced apart along the front-rear direction of the rear vehicle body and both connected between the two frame longitudinal beams, the reinforcing structure being located between the two frame transverse beams and fixed to the frame body; a lower control arm mounting bracket fixed to the frame body, the lower control arm mounting bracket being provided at the connection between the frame transverse beams and the frame longitudinal beams, and the lower control arm mounting bracket being fixed to the reinforcing structure.

[0023] In some examples of the present invention, the rear vehicle frame forms a trunk space for mounting a charging port structure.

[0024] A vehicle according to a second aspect of the present invention includes the aforementioned rear body assembly.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the rear vehicle body assembly according to an embodiment of the present invention; Figure 2 This is a bottom view of the rear vehicle body assembly according to an embodiment of the present invention; Figure 3 This is a partial structural schematic diagram of a vehicle according to an embodiment of the present invention; Figure 4 This is a schematic diagram of another part of the structure of a vehicle according to an embodiment of the present invention; Figure 5 This is an assembly diagram of the bottom frame structure, lower swing arm mounting bracket, motor controller, and controller mounting bracket according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the support structure according to an embodiment of the present invention; Figure 7 This is a partial schematic diagram of the rear vehicle body assembly according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the charging port mounting bracket according to an embodiment of the present invention.

[0027] Figure label: Rear body frame 10; Top longitudinal beam 11; Side panel 12; Tower arm 13; Tower arm main body 131; Tower arm extension structure 132; Bottom of body 14; Body floor 142; Top of body 15; Side of body 16; Accommodation space 20; Support structure 30; First support beam 31; First beam segment 3121; Second beam segment 3122; Connecting crossbeam 35; Second connecting beam 150; First connecting beam 170; First crossbeam 6121; Second crossbeam 6122; Third crossbeam 143; Fourth crossbeam 144; Rear body assembly 500; Rear body 510; C-pillar 6132; D-pillar 6133; Reinforcing frame 620; First longitudinal beam 621; Second longitudinal beam 622; First longitudinal beam segment 6221; Second longitudinal beam segment 6222; Second support beam 623; 630; Reinforcing longitudinal beam; 631; Middle longitudinal beam; 632; Rear longitudinal beam; 633; ​​Bottom frame structure; 640; Frame body; 641; Frame longitudinal beam; 6411; Frame crossbeam; 6412; Reinforcing structure; 642; Reinforcing beam; 524; Rear crossbeam; 525; Middle beam segment; 5252; Lower swing arm mounting bracket; 650; Rear energy absorption structure; 660; Connecting structure; 670; Vehicle; 900; First connecting bracket; 910; First plate; 911; Second plate; 912; Second connecting bracket; 920; Third plate; 92... 1; Fourth plate 922; Fifth plate 923; Connecting plate 924; First mounting space 925; Second mounting space 540; Motor controller 550; Controller mounting bracket 560; Trunk space 210; Charging port structure 220; Mounting base 221; Mounting plate 2211; Plug interface 2212; Accommodating wall 230; Charging port mounting bracket 240; First body 241; First mounting hole 2411; Second body 242; First side plate 2421; Second side plate 2422; Second accommodating space 2423; Rear side wall of space 250; Wiring harness 260. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] The following is for reference. Figures 1-6 A rear body assembly 500 according to an embodiment of the present invention is described, which can be installed on a vehicle 900 equipped with corner module technology.

[0030] like Figure 1As shown, according to a first aspect embodiment of the present invention, the rear body assembly 500 includes: a rear body 510, the rear body 510 including a rear body frame 10, the rear body frame 10 including a body bottom 14, a body top 15 and two body sides 16, the two body sides 16 being opposite to and spaced apart in the left-right direction of the rear body 510, the body bottom 14 and the body top 15 being connected between the two body sides 16, the body bottom 14 being located below the body top 15, the body side 16 including: a side panel 12 and a tower pack 13, the side panel 12 being located above the tower pack 13 and fixedly connected to the tower pack 13; a support structure 30, the support structure 30 being disposed between the two body sides 16 and fixedly connected to the rear body frame 10, the support structure 30 being used to support the rear body frame 10; and a first connecting bracket 910, the first connecting bracket 910 being connected between the tower pack 13 and the support structure 30.

[0031] Among them, such as Figure 1 As shown, the front-to-back direction of the rear vehicle body 510 can be defined as the X direction, the left-to-right direction of the rear vehicle body 510 can be defined as the Y direction, and the up-and-down direction of the rear vehicle body 510 can be defined as the Z direction.

[0032] like Figure 1 As shown, the rear vehicle frame 10 may include two vehicle side sections 16, a vehicle bottom section 14, and a vehicle top section 15. The two vehicle side sections 16 may be respectively located on the left and right sides of the rear vehicle frame 10, and may be arranged opposite to each other along the left-right direction of the rear vehicle 510. The vehicle bottom section 14 may extend in the front-rear direction, may be located at the bottom of the rear vehicle frame 10, and may be fixedly connected between the two vehicle side sections 16. The vehicle top section 15 may be located at the top of the rear vehicle frame 10, and may be connected between the two vehicle side sections 16.

[0033] The bottom 14 and top 15 of the vehicle body can be fixedly connected to the two side parts 16 of the vehicle body by means of integral molding, welding, bolt connection, etc., so that the bottom 14 and top 15 of the vehicle body can be reliably connected between the two side parts 16 of the vehicle body.

[0034] like Figure 1As shown, the top 15 of the vehicle body, the two side sections 16, and the bottom 14 of the vehicle body can jointly enclose to form a receiving space 20, which can be the rear space inside the vehicle. The supporting structure 30 can be disposed within the receiving space 20. As one embodiment, the side panel 12 can be disposed on the outside of the tower pack 13 and along the vertical direction of the rear vehicle body 510. At least a portion of the side panel 12 can be located above the tower pack 13 and can be fixedly connected to the tower pack 13. As one embodiment, a portion of the structure of the side panel 12 can be located above the tower pack 13. As another embodiment, the entire structure of the side panel 12 can be located above the tower pack 13.

[0035] The side panel 12 can be made of metal, specifically steel, aluminum alloy, or other metal materials, to ensure good rigidity and strength. The tower pack 13 can also be made of metal, specifically steel, aluminum alloy, or other metal materials, to ensure good rigidity and strength. The tower pack 13 is fixedly connected to the side panel 12, which helps ensure the connection strength between the two and improves the structural stability of the vehicle body side 16. Specifically, the tower pack 13 and the side panel 12 can be fixedly connected by welding, bolting, or integral molding.

[0036] In another embodiment, the support structure 30 can be fixedly connected to both the side 16 and bottom 14 of the vehicle body. The side 16 and bottom 14 can transfer loads to each other through the support structure 30, which helps optimize the load transfer path between them, reduces the risk of stress concentration, and lowers the risk of deformation. This also improves the structural reliability of the rear vehicle frame 10. In another embodiment, the support structure 30 can extend vertically and connect to the top 15 and bottom 14 of the vehicle body. This allows the support structure 30 to effectively support the rear vehicle frame 10 vertically, reducing the risk of relative movement between the top 15 and bottom 14, improving the structural stability of the rear vehicle frame 10, and optimizing the load transfer path between them. When the vehicle 900 is impacted, the top 15 and bottom 14 can transfer and distribute the load through the support structure 30, further reducing the risk of stress concentration in the rear vehicle frame 10.

[0037] Based on the above, the embodiment of this application, by setting the support structure 30, can, on the one hand, support the rear vehicle frame 10, which helps to reduce the risk of deformation of the rear vehicle frame 10 and improve the structural stiffness and strength of the rear vehicle frame 10. On the other hand, it can optimize the load transfer path of the rear vehicle frame 10, which helps to reduce the risk of stress concentration of the rear vehicle frame 10, further reduces the risk of deformation of the rear vehicle frame 10, improves the structural strength and impact resistance of the rear vehicle frame 10, ensures the structural integrity of the rear vehicle frame 10, and improves the collision safety of the vehicle 900.

[0038] The first connecting bracket 910 can be made of metal, specifically, it can be made of aluminum alloy, steel, or other metal materials. The first connecting bracket 910 can connect the tower 13 and the supporting structure 30. Specifically, for example... Figure 1 As shown, the first connecting bracket 910 can be fixedly connected to both the tower bag 13 and the support structure 30. The first connecting bracket 910 can be fixedly connected to the tower bag 13 and the support structure 30 by means of welding, bolting, riveting, integral molding, etc., so as to reliably connect the first connecting bracket 910 to the tower bag 13 and the support structure 30.

[0039] like Figure 1 As shown, the first connecting bracket 910 may include a first plate 911 and a second plate 912. The first plate 911 can be fixedly connected to the second plate 912, and the first plate 911 and the second plate 912 can be set at an angle. The first plate 911 can be fixedly connected to the tower pack 13, and the second plate 912 can be fixedly connected to the support structure 30. By setting the first connecting bracket 910, the connection stiffness between the tower pack 13 and the support structure 30 can be improved, which is beneficial to improving the connection strength between the side of the vehicle body 16 and the support structure 30, thereby enhancing the structural stability of the rear vehicle frame 10. When the vehicle 900 collides, the tower pack 13 and the support structure 30 can transfer loads to each other through the first connecting bracket 910, which is beneficial to reducing the risk of stress concentration in the rear vehicle component 500, improving the impact resistance of the rear vehicle component 500, and further improving the collision safety of the vehicle 900.

[0040] In some examples of embodiments of the present invention, such as Figure 1 As shown, the tower bag 13 includes: a tower bag body 131 and a tower bag extension structure 132, the tower bag extension structure 132 is connected between the tower bag body 131 and the side wall 12, and the first connecting bracket 910 is connected between the tower bag body 131 and the support structure 30.

[0041] Among them, such as Figure 1As shown, the tower pack 13 may include a tower pack body 131 and a tower pack extension structure 132. The tower pack extension structure 132 may be connected between the tower pack body 131 and the side wall 12. From top to bottom, the tower pack extension structure 132 may extend obliquely away from the side wall 12, so that the area below the tower pack extension structure 132 can provide sufficient installation space for vehicle 900 structures such as steering motors, which helps to reduce the risk of interference between the tower pack extension structure 132 and vehicle 900 steering motors and other structures.

[0042] The tower bag body 131 is a high-strength structure in the tower bag 13. The first connecting bracket 910 connects the tower bag body 131 and the support structure 30. The force of the support structure 30 can be transferred to the high-strength tower bag body 131 through the first connecting bracket 910. The load can be preferentially transferred and distributed through the tower bag body 131, which helps to reduce the stress on the tower bag extension structure 132, reduces the risk of deformation of the tower bag extension structure 132, and helps to ensure the structural reliability of the tower bag extension structure 132.

[0043] In some examples of embodiments of the present invention, such as Figure 1 , Figure 6 As shown, the support structure 30 includes two first support beams 31, both of which extend inclinedly in the vertical direction. The two first support beams 31 are arranged crosswise and fixedly connected, and the end of each first support beam 31 is fixedly connected to the rear vehicle frame 10.

[0044] The first support beam 31 can be made of metal materials, specifically steel, aluminum alloy and other metal materials, so that the first support beam 31 has good strength and rigidity, and the two first support beams 31 can be fixedly connected.

[0045] As an example, a through hole can be formed in one first support beam 31, and another first support beam 31 can be inserted into the through hole, thus fixing the two first support beams 31 together. As another example, such as... Figure 6 As shown, a first support beam 31 may include a first beam segment 3121 and a second beam segment 3122, and the first beam segment 3121 and the second beam segment 3122 may be fixed on opposite sides of another first support beam 31.

[0046] like Figure 6 As shown, a first included angle α can be formed between the first beam segment 3121 and another first supporting beam 31. The size of the first included angle satisfies the relationship: 0° < α < 90°, and the size of the first included angle can be 1°, 30°, 45°, 89°, etc. Figure 6As shown, a second included angle β can be formed between the second beam segment 3122 and another first supporting beam 31. The size of the second included angle satisfies the relationship: 0°<β<90°. The size of the second included angle can be 1°, 30°, 45°, 89°, etc.

[0047] like Figure 6 As shown, the first included angle and the second included angle are equal, so that the axial direction of the first beam segment 3121 is consistent with the axial direction of the second beam segment 3122, thereby causing the two first support beams 31 to intersect and form an "X" shaped structure. Figure 6 As shown, this application uses an example where a first support beam 31 includes a first beam segment 3121 and a second beam segment 3122, and the first beam segment 3121 and the second beam segment 3122 are located on opposite sides of another first support beam 31.

[0048] By arranging a first support beam 31 in segments and fixing it to the opposite sides of another first support beam 31 respectively, the segmented first support beam 31 can form a clamping constraint on the other first support beam 31, which helps to reduce the risk of relative movement between the two first support beams 31 and improves the structural reliability of the support structure 30.

[0049] By fixing two first support beams 31 together, the overall rigidity of the support structure 30 is enhanced. In one embodiment, the two first support beams 31 can be fixedly connected by welding. In another embodiment, the two first support beams 31 can be fixedly connected by bolts, riveting, or other methods. In yet another embodiment, the two first support beams 31 can be manufactured using an integral molding process. This application uses the example of fixing two first support beams 31 together by welding; in other words, both the first beam segment 3121 and the second beam segment 3122 are welded to the other first support beam 31.

[0050] like Figure 1 As shown, both ends of each first support beam 31 are fixedly connected to the rear vehicle frame 10. The first support beam 31 can be welded to the rear vehicle frame 10, or the first support beam 31 can be fixedly connected to the rear vehicle frame 10 by bolts or rivets or other connecting parts. The connection method between the first support beam 31 and the rear vehicle frame 10 is not limited to the above-listed methods, as long as reliable fixing between the first support beam 31 and the rear vehicle frame 10 can be achieved.

[0051] The two first support beams 31 are arranged crosswise and fixedly connected. The two first support beams 31 can form mutual constraints, which helps to reduce the risk of relative displacement between the two first support beams 31 and improve the overall structural stability of the support structure 30. At the same time, the two first support beams 31 can transfer stress to each other, which helps to reduce the risk of stress concentration in one of the first support beams 31 and improve the overall stiffness of the support structure 30.

[0052] Furthermore, by setting both ends of each first support beam 31 to be fixedly connected to the rear body frame 10, the rear body frame 10 and the support structure can form a complete and continuous force transmission path. When the vehicle 900 vibrates or collides, the vibration load or collision load can be distributed along the first support beam 31 to the entire rear body frame 10, which can achieve efficient load distribution. This helps to reduce the risk of stress concentration in the rear body 510 and improves the impact resistance and reliability of the rear body 510.

[0053] By setting two first support beams 31 that extend obliquely in the vertical direction, and fixing the support structure 30 to the rear vehicle frame 10, the first support beams 31 can effectively support the rear vehicle frame 10, which is beneficial to optimizing the structural layout of the support structure 30. At the same time, the two first support beams 31 are arranged crosswise and fixedly connected, and the end of each first support beam 31 is fixedly connected to the rear vehicle frame 10, which enables the two first support beams 31 and the rear vehicle frame 10 to form a stable triangular support system. The triangle has good geometric stability and is not easy to deform, which helps to further reduce the risk of deformation of the rear vehicle 510, further improve the structural stability of the rear vehicle 510, and further reduce the risk of the rear vehicle frame 10 intruding into the passenger compartment of the vehicle 900. At the same time, the two first support beams 31 that extend obliquely in the vertical direction can play a protective role similar to a roll cage, which helps to ensure the safety of the occupants inside the vehicle.

[0054] It should be noted that the support structure 30 effectively protects the safety of vehicle occupants and enhances the structural strength and torsional stiffness of the vehicle body. Specifically, when the vehicle 900 is involved in a rollover or collision, the support structure 30 can disperse and buffer the impact load through its stable geometry, limiting the deformation of the rear body frame 10 and reducing the risk of excessive deformation of the rear body frame 10, thereby reducing the risk of serious injury to the occupants. At the same time, the support structure 30 can work with the rear body frame 10 to bear the load, effectively offsetting external impact forces and further improving the overall structural strength and stability of the rear body 510.

[0055] In some examples of embodiments of the present invention, such as Figure 1 As shown, a top longitudinal beam 11 is formed at the connection between the top of the vehicle body 15 and the two sides of the vehicle body 16, and the upper ends of the two first support beams 31 are fixedly connected to the two top longitudinal beams 11 respectively.

[0056] Among them, such as Figure 1 As shown, top longitudinal beams 11 can be formed at the connection points of the top 15 of the rear vehicle frame 10 and the two side sections 16 of the vehicle. The two top longitudinal beams 11 are arranged at intervals along the left-right direction of the rear vehicle 510, and both top longitudinal beams 11 can extend in the front-rear direction. Figure 1 As shown, along the vertical direction of the rear vehicle body 510, the upper ends of the two first support beams 31 can be fixedly connected to the two top longitudinal beams 11 respectively. The first support beams 31 and the corresponding top longitudinal beams 11 can be integrally formed, or the upper end of the first support beams 31 can be welded to the corresponding top longitudinal beams 11, or the upper end of the first support beams 31 can be detachably connected to the corresponding top longitudinal beams 11 through bolts, rivets and other connecting parts.

[0057] By setting two first support beams 31 that extend obliquely in the vertical direction, and fixing the upper ends of the two first support beams 31 to the two top longitudinal beams 11 respectively, the support structure 30 can effectively support the top 15 and side 16 of the rear body frame 10. When the vehicle 900 vibrates or collides, the top longitudinal beams 11 can quickly transfer the load to the corresponding first support beams 31, and then to other positions of the rear body frame 10 via the first support beams 31. This helps reduce the risk of stress concentration in the top longitudinal beams 11, reduces the risk of deformation or breakage due to excessive local stress, protects the structural integrity of the top longitudinal beams 11, and extends the service life of the top longitudinal beams 11, thereby extending the service life of the rear body 510 and further improving the structural reliability and impact resistance of the rear body 510.

[0058] In some examples of embodiments of the present invention, such as Figure 1 As shown, the lower ends of the two first support beams 31 are fixedly connected to the two towers 13 respectively; and / or the lower ends of the two first support beams 31 are fixed to the bottom of the vehicle body 14.

[0059] In one embodiment, the lower ends of the two first support beams 31 can be fixedly connected to the two tower packs 13, specifically, the lower ends of the two first support beams 31 can be fixedly connected to the tower pack bodies 131 of the two tower packs 13. In another embodiment, the lower ends of both first support beams 31 can be fixed to the bottom 14 of the vehicle body. For example, as shown... Figure 1 As shown, the bottom of the vehicle body 14 may include a second crossbeam 6122, which can be connected between the two tower body bodies 131. The lower ends of the two first support beams 31 can be fixedly connected to the second crossbeam 6122. As another embodiment, the lower ends of the first support beams 31 can be fixedly connected to both the tower body 13 and the bottom of the vehicle body 14.

[0060] When the lower end of the first support beam 31 is fixedly connected to the corresponding tower pack 13, the lower end of the first support beam 31 can be directly or indirectly fixed to the corresponding tower pack 13. When the lower end of the first support beam 31 is fixedly connected to the bottom of the vehicle body 14, the lower end of the first support beam 31 can be directly or indirectly fixed to the bottom of the vehicle body 14.

[0061] By setting the lower ends of the two first support beams 31 to be fixedly connected to the two tower bags 13 respectively, when the vehicle 900 is impacted, the load on the tower bag 13 can be directly transferred to the first support beams 31, which helps to further reduce the risk of stress concentration in the tower bag 13 and further improve the impact resistance of the tower bag 13. At the same time, the first support beams 31 can effectively support the tower bag 13, which helps to reduce the risk of excessive deformation of the tower bag 13.

[0062] By fixing the lower ends of the two first support beams 31 to the bottom of the vehicle body 14, when the vehicle 900 is impacted, the load on the support structure 30 is transferred to the bottom of the vehicle body 14 through the first support beams 31. This helps to reduce the risk of stress concentration in the support structure 30, reduce the deformation of the support structure 30, and protect the structural integrity of the support structure 30.

[0063] Based on the above, when the lower ends of the two first support beams 31 are fixedly connected to the corresponding tower pack 13 and the bottom of the vehicle body 14, it is beneficial to further reduce the risk of stress concentration in the tower pack 13 and support structure 30, to improve the impact resistance of the rear body component 500, to improve the structural strength of the rear body component 500, to improve the collision safety of the vehicle 900, and to ensure the safe use performance of the vehicle 900.

[0064] In some examples of embodiments of the present invention, such as Figure 1 As shown, the rear body assembly 500 may further include a connecting crossbeam 35, and the tower pack 13 includes a tower pack body 131 and a tower pack extension structure 132, the tower pack extension structure 132 being connected between the tower pack body 131 and the side panel 12, and the connecting crossbeam 35 being connected between the tower pack bodies 131 of the two tower packs 13.

[0065] The connecting beam 35 can be made of metal, specifically steel, aluminum alloy, or other metal materials, to ensure good structural strength and rigidity. As an example, the rear body assembly 500 may include one connecting beam 35. As another example, the rear body assembly 500 may include multiple connecting beams 35. This application will use the example of a rear body assembly 500 including multiple connecting beams 35 for illustration.

[0066] Multiple connecting beams 35 can be arranged sequentially in the front-to-back direction, or sequentially in the vertical direction. This application uses the sequential arrangement of multiple connecting beams 35 in the vertical direction as an example for illustration. The number of connecting beams 35 can be two, three, four, etc., and the specific number of connecting beams 35 can be reasonably selected according to actual needs.

[0067] The connecting beam 35 can be fixedly connected between the tower body 131 of the two tower bags 13. As an example, the connecting beam 35 can be welded between the tower body 131 of the two tower bags 13. As another example, the connecting beam 35 can be fixed between the tower body 131 of the two tower bags 13 by bolts, rivets or other connectors. As yet another example, the connecting beam 35 can be integrally formed with the tower body 131.

[0068] By setting the connecting beam 35, the load transfer path between the two tower packs 13 can be shortened, which is beneficial to improving the load transfer efficiency between the two tower packs 13. When the vehicle 900 is involved in a side collision, the impact load on one tower pack 13 can be quickly transferred to the other tower pack 13 along the left and right directions of the rear body 510 through the connecting beam 35, so that the two tower packs 13 can share the impact load. This helps to reduce the risk of structural failure caused by overload of a single tower pack 13. At the same time, the connecting beam 35 connects the tower pack bodies 131 of the two tower packs 13. The connecting beam 35 can provide support for the tower pack bodies 131 of the two tower packs 13, which helps to reduce the risk of relative movement of the tower pack bodies 131 of the two tower packs 13, thereby further improving the overall structural stability of the rear body 510.

[0069] In some examples of embodiments of the present invention, such as Figure 1 , Figure 3 As shown, the rear body assembly 500 also includes: a reinforcing frame 620, which is provided between two body sides 16, at least one body side 16 is fixed with the reinforcing frame 620, and the reinforcing frame 620 is fixed to the bottom of the body 14.

[0070] The reinforcing frame 620 can be made of metal materials, specifically steel, aluminum alloy, or other metal materials, to give it good rigidity and strength. At least one side of the vehicle body 16 is fixed with a reinforcing frame 620. As one embodiment, one side of the vehicle body 16 can be fixed with a reinforcing frame 620; as another embodiment, both side of the vehicle body 16 can be fixed with reinforcing frames 620. This application embodiment uses the example of both side of the vehicle body 16 being fixed with reinforcing frames 620 for illustration, and the side of the vehicle body 16 and the reinforcing frame 620 can be configured in a one-to-one correspondence.

[0071] The reinforcing frame 620 is fixedly connected to the corresponding side of the vehicle body 16. Specifically, the reinforcing frame 620 and the corresponding side of the vehicle body 16 can be fixedly connected by welding, riveting, bolting, or integral molding to ensure the reliability of the connection between the reinforcing frame 620 and the side of the vehicle body 16. The reinforcing frame 620 can also be fixedly connected to the bottom of the vehicle body 14. Specifically, the reinforcing frame 620 can be fixedly connected to the bottom of the vehicle body 14 by welding, bolting, or integral molding to ensure the stability of the connection between the reinforcing frame 620 and the bottom of the vehicle body 14, thereby improving the rigidity of the rear vehicle body frame 10.

[0072] In this embodiment, by setting a reinforcing frame 620, the loads on the bottom 14 and sides 16 of the vehicle body can be effectively transferred and dispersed through the reinforcing frame 620 in the event of a collision with the vehicle 900. This helps to reduce the risk of stress concentration in the rear body frame 10. Furthermore, the reinforcing frame 620 can effectively support the bottom 14 and sides 16 of the vehicle body, which helps to reduce the probability of deformation of the rear body frame 10, improves the impact resistance and structural strength of the rear body frame 10, enhances the structural reliability of the rear body assembly 500, and thus improves the collision safety of the vehicle 900.

[0073] In some examples of embodiments of the present invention, such as Figure 1 As shown, the rear body assembly 500 also includes a second connecting bracket 920. The tower pack 13 includes a tower pack body 131 and a tower pack extension structure 132. The tower pack extension structure 132 is connected between the tower pack body 131 and the side panel 12. Along the front-rear direction, at least one side of the tower pack body 131 is provided with the second connecting bracket 920. The second connecting bracket 920 is connected between the reinforcing frame 620 and the tower pack body 131.

[0074] The second connecting bracket 920 can be made of metal, specifically steel, aluminum alloy, or other metal materials, to ensure good structural strength and rigidity. The second connecting bracket 920 is provided on at least one side of the tower bag body 131 along the front-back direction. As one embodiment, the second connecting bracket 920 can be provided on one side of the tower bag body 131 along the front-back direction; in other words, the second connecting bracket 920 can be provided on either the front or rear side of the tower bag body 131. As another embodiment, the second connecting bracket 920 can be provided on both sides of the tower bag body 131 along the front-back direction; in other words, the second connecting bracket 920 can be provided on both the front and rear sides of the tower bag body 131.

[0075] As an example, such as Figure 1As shown, the second connecting bracket 920 may include a third plate 921, a fourth plate 922, a fifth plate 923 and a connecting plate 924. The fourth plate 922 may be connected between the third plate 921 and the fifth plate 923, and the fourth plate 922 may be set at an angle to both the third plate 921 and the fifth plate 923, so that the third plate 921, the fourth plate 922 and the fifth plate 923 define the first installation space 925.

[0076] The connecting plate 924 can be disposed within the first installation space 925, and the connecting plate 924 can be fixedly connected to the third plate 921, the fourth plate 922, and the fifth plate 923. The third plate 921 can be fixedly connected to the reinforcing frame 620, and the fifth plate 923 can be fixedly connected to the tower body 131, so as to achieve the effect of transitional connection between the reinforcing frame 620 and the tower body 131 through the second connecting bracket 920.

[0077] By setting the second connecting bracket 920, the reinforcing frame 620 and the tower body 131 can be reliably connected through the second connecting bracket 920. When the vehicle 900 is impacted, the load can be transferred and dispersed between the reinforcing frame 620 and the tower body 13 through the second connecting bracket 920, which helps to further reduce the risk of stress concentration in the rear body components 500 and further improve the collision safety of the vehicle 900.

[0078] In some examples of embodiments of the present invention, such as Figure 1 , Figure 4 As shown, the reinforcing frame 620 includes: a first longitudinal beam 621, a second longitudinal beam 622, and a plurality of second support beams 623. The second support beams 623 extend along the vertical direction of the rear vehicle body 510. The first longitudinal beam 621 is set at a higher height than the second longitudinal beam 622 and is spaced apart from the second longitudinal beam 622. The first longitudinal beam 621 is fixed to the side of the vehicle body 16, and the second longitudinal beam 622 is fixed to the bottom of the vehicle body 14. The plurality of second support beams 623 are arranged along the front-rear direction of the rear vehicle body 510 and are all connected between the first longitudinal beam 621 and the second longitudinal beam 622.

[0079] The reinforcing frame 620 may include two, three, four, or other second support beams 623, such as... Figure 1 , Figure 4 As shown, this embodiment of the application takes the reinforcing frame 620 including two second support beams 623 as an example for illustration. The two second support beams 623 can be arranged sequentially at intervals along the front and rear directions of the rear vehicle body 510.

[0080] The first longitudinal beam 621 can be fixed to the side of the vehicle body 16, so that the reinforcing frame 620 is reliably connected to the side of the vehicle body 16. Specifically, the first longitudinal beam 621 can be fixed to the side of the vehicle body 16 by welding, bolting, riveting, or integral molding. Figure 1 , Figure 4 As shown, the first longitudinal beam 621 can extend along the front-rear direction of the rear vehicle body 510. The first longitudinal beam 621 can be located on the inner side of the vehicle body side 16 and fixed to the vehicle body side 16. The first longitudinal beam 621 can be fixedly connected to both the side panel 12 and the tower pack 13, which is beneficial to improving the connection reliability between the tower pack 13 and the side panel 12 and to improving the structural stability of the vehicle body side 16.

[0081] like Figure 1 As shown, the bottom of the vehicle body 14 may include a vehicle floor 142, which can extend along the front-rear direction of the rear vehicle body 510 and can be connected between the two side parts 16 of the vehicle body. A second longitudinal beam 622 can be disposed above the vehicle floor 142 and can be fixedly connected to the vehicle floor 142. Specifically, the second longitudinal beam 622 can be fixedly connected to the vehicle floor 142 of the bottom of the vehicle body 14 by means of welding, bolting, integral molding, etc.

[0082] Multiple second support beams 623 can extend vertically along the rear vehicle body 510, and can be arranged at intervals along the front-rear direction of the rear vehicle body 510. Multiple second support beams 623 can be connected between the first longitudinal beam 621 and the second longitudinal beam 622. The second support beams 623 can be fixedly connected to the first longitudinal beam 621 and the second longitudinal beam 622 by welding, bolting, integral molding, or other methods.

[0083] By setting a first longitudinal beam 621 fixed to the side 16 of the vehicle body, a second longitudinal beam 622 fixed to the bottom 14 of the vehicle body, and a second support beam 623 connected between the first longitudinal beam 621 and the second longitudinal beam 622, the reinforcing frame 620 can stably support the side 16 and the bottom 14 of the vehicle body. On the other hand, in the event of a collision, the load on the side 16 and the bottom 14 of the vehicle body can be efficiently transferred and dispersed through the second support beam 623, which helps to further reduce the risk of stress concentration in the rear vehicle body frame 10 and improve the structural strength and collision safety of the rear vehicle body 510.

[0084] As an example, the lower end of the first support beam 31 can be fixedly connected to the second longitudinal beam 622. When the vehicle 900 collides, the bottom 14 and top 15 of the vehicle body can transfer and disperse the load through the second longitudinal beam 622 and the first support beam 31. This is beneficial to optimizing the load transfer path of the bottom 14 and top 15 of the vehicle body, reducing the risk of stress concentration at the bottom 14 or top 15 of the vehicle body, and further improving the collision safety of the vehicle 900.

[0085] In some examples of embodiments of the present invention, such as Figure 1As shown, there are two second support beams 623. The tower bag 13 includes a tower bag body 131 and a tower bag extension structure 132. The tower bag extension structure 132 is connected between the tower bag body 131 and the side wall 12. At least a portion of one second support beam 623 is located on the front side of the tower bag body 131, and at least a portion of the other second support beam 623 is located on the rear side of the tower bag body 131.

[0086] Among them, such as Figure 1 As shown, the second support beam 623 is located on the inner side of the vehicle body side 16. The second support beam 623 can extend along the vertical direction of the rear vehicle body 510. The second connecting bracket 920 can be fixed between the second support beam 623 and the tower body 131.

[0087] At least a portion of a second support beam 623 is located on the front side of the tower body 131, and the upper end of the second support beam 623 can be fixedly connected to the front end of the first longitudinal beam 621. As one embodiment, a portion of the structure of the second support beam 623 can be located on the front side of the tower body 131. As another embodiment, the entire structure of the second support beam 623 can be located on the front side of the tower body 131.

[0088] like Figure 1 As shown, the second support beam 623, at least partially located on the front side of the tower pack body 131, can extend obliquely from top to bottom in a direction away from the side panel 12, and the second support beam 623 can extend obliquely towards the front side of the tower pack body 131, so that the second support beam 623 can fully avoid the tower pack 13, which helps to reduce the risk of interference between the second support beam 623, at least partially located on the front side of the tower pack body 131, and helps to improve the rationality of the structural layout of the second support beam 623. At the same time, the second support beam 623 can be in close contact with the inner surface of the tower pack extension structure 132, so that the second support beam 623 can effectively support the tower pack extension structure 132, which helps to reduce the risk of the tower pack extension structure 132 denting and deforming towards the inner side of the rear vehicle body 510 when the vehicle 900 collides, and helps to improve the deformation resistance of the tower pack extension structure 132.

[0089] like Figure 1 As shown, at least a portion of the second support beam 623 located on the rear side can be located on the rear side of the tower body 131, and the second support beam 623 can be provided on the inner side of the vehicle side 16, and the second support beam 623 can extend along the vertical direction of the rear vehicle body 510.

[0090] At least a portion of the second support beam 623 located on the rear side can be located on the rear side of the tower body 131. As one embodiment, a portion of the structure of the second support beam 623 can be located on the rear side of the tower body 131. As another embodiment, the entire structure of the second support beam 623 can be located on the rear side of the tower body 131.

[0091] From top to bottom, the second support beam 623, which is at least partially located on the rear side of the tower body 131, can extend inclined away from the side circumference 12, and the second support beam 623 can extend inclined towards the rear side of the tower body 131. This helps to reduce the risk of interference between the second support beam 623 and the tower body 131, and helps to improve the layout rationality of the second support beam 623.

[0092] Based on the above, when vehicle 900 is impacted, the impact load on the side 16 of the vehicle body can be transmitted to the second longitudinal beam 622 via the two second support beams 623 and distributed to the bottom 14 of the vehicle body. This helps reduce the risk of deformation of the side 16 of the vehicle body due to the concentrated load, and helps improve the overall rigidity of the rear body 510. At the same time, the first longitudinal beam 621 can be located on the upper side of the tower block body 131, and at least part of one second support beam 623 can be located on the front side of the tower block body 131. At least a portion of the support beam 623 can be located on the rear side of the tower bag body 131, and both second support beams 623 can be connected between the first longitudinal beam 621 and the second longitudinal beam 622. This enables the first longitudinal beam 621, the two second support beams 623, and the second longitudinal beam 622 to form a frame structure around the tower bag body 131, thereby strengthening and protecting the tower bag body 131. This helps reduce the risk of deformation of the tower bag body 131 when the vehicle 900 is impacted, and also helps improve the structural strength of the tower bag body 131.

[0093] In some examples of embodiments of the present invention, such as Figure 4 As shown, the second longitudinal beam 622 may include a first longitudinal beam segment 6221 and a second longitudinal beam segment 6222. The bottom of the vehicle body 14 may include a first crossbeam 6121 and a second crossbeam 6122. The first crossbeam 6121 is located in front of the second crossbeam 6122. The first longitudinal beam segment 6221 is connected between the first crossbeam 6121 and the second crossbeam 6122. The second longitudinal beam segment 6222 and the second support beam 623 are located behind the second crossbeam 6122. The second longitudinal beam segment 6222 is connected between the rear second support beam 623 and the second crossbeam 6122.

[0094] The first longitudinal beam segment 6221 and the second longitudinal beam segment 6222 can be arranged sequentially along the front-rear direction of the rear vehicle body 510, and the first longitudinal beam segment 6221 can be located in front of the second crossbeam 6122. Both the first crossbeam 6121 and the second crossbeam 6122 can be made of metal materials to ensure that the first crossbeam 6121 and the second crossbeam 6122 have sufficient structural strength and rigidity. Specifically, the first crossbeam 6121 and the second crossbeam 6122 can be made of metal materials such as aluminum alloy and stainless steel.

[0095] The first longitudinal beam segment 6221 can be connected between the first crossbeam 6121 and the second crossbeam 6122. Specifically, the first longitudinal beam segment 6221 can be fixedly connected to the first crossbeam 6121 and the second crossbeam 6122 by means of welding, bolting, integral molding, etc. The second longitudinal beam segment 6222 is connected between the rear second support beam 623 and the second crossbeam 6122. Specifically, the second longitudinal beam segment 6222 can be fixedly connected to the rear second support beam 623 and the second crossbeam 6122 by means of welding, bolting, integral molding, etc.

[0096] like Figure 1 , Figure 4 As shown, the lower end of the front second support beam 623 can be fixedly connected to the front end of the first longitudinal beam segment 6221. Specifically, the front second support beam 623 can be welded to the first longitudinal beam segment 6221 to ensure a reliable connection between the front second support beam 623 and the first longitudinal beam segment 6221. The lower end of the rear second support beam 623 can be connected to the rear end of the second longitudinal beam segment 6222, enabling the first longitudinal beam 621, the two second support beams 623, and the second longitudinal beam 622 to jointly form a force transmission frame extending along the longitudinal direction of the rear vehicle body 510. This force transmission frame can effectively guide the collision energy to be dispersed and transmitted along multiple paths, which helps to reduce the risk of stress concentration in the rear vehicle body 510 and further improves the collision safety of the rear vehicle body 510.

[0097] By dividing the second longitudinal beam 622 into a first longitudinal beam segment 6221 and a second longitudinal beam segment 6222, with the first longitudinal beam segment 6221 connecting between the first crossbeam 6121 and the second crossbeam 6122, and the second longitudinal beam segment 6222 connecting between the rear second support beam 623 and the second crossbeam 6122, the load transfer path of the vehicle bottom 14 along the longitudinal direction of the rear vehicle body 510 becomes more continuous, which is beneficial to increasing the load transfer efficiency of the vehicle bottom 14 along the longitudinal direction of the rear vehicle body 510. Simultaneously, connecting the first longitudinal beam segment 6221 between the first crossbeam 6121 and the second crossbeam 6122 reduces the risk of relative movement between the first crossbeam 6121 and the second crossbeam 6122, and connecting the second longitudinal beam segment 6222 between the rear second support beam 623 and the second crossbeam 6122 reduces the risk of relative movement between the rear second support beam 623 and the second crossbeam 6122, thus improving the structural stability of the rear vehicle body assembly 500.

[0098] In some examples of embodiments of the present invention, such as Figure 1 As shown, the second longitudinal beam 622 can also be fixed to the tower package 13.

[0099] The second longitudinal beam 622 can be fixed to the tower arm 13 by welding, bolting, riveting, or integral molding. By fixing the second longitudinal beam 622 to the tower arm 13, the connection strength between the reinforcing frame 620 and the side of the vehicle body 16 is enhanced, which helps to improve the structural reliability of the rear body assembly 500. On the other hand, when the vehicle 900 is involved in a collision, the bottom of the vehicle body 14 and the side of the vehicle body 16 can transfer and distribute the load through the second longitudinal beam 622, which helps to further reduce the risk of stress concentration in the rear body frame 10 and further improve the impact resistance of the rear body assembly 500.

[0100] In some examples of embodiments of the present invention, such as Figure 1 As shown, the side wall 12 includes a C-column 6132 and a D-column 6133, and the first longitudinal beam 621 is fixedly connected to both the C-column 6132 and the D-column 6133.

[0101] Among them, such as Figure 1 , Figure 3 As shown, the C-pillar 6132 and D-pillar 6133 are arranged sequentially along the front-rear direction of the rear vehicle body 510, with the C-pillar 6132 located in front of the D-pillar 6133. The front end of the first longitudinal beam 621 can be fixedly connected to the C-pillar 6132, and the rear end of the first longitudinal beam 621 can be fixedly connected to the D-pillar 6133. The first longitudinal beam 621 can be welded between the C-pillar 6132 and the D-pillar 6133 to enhance the structural rigidity of the side panel 12.

[0102] By setting the first longitudinal beam 621 to be fixedly connected to the tower 13, C-pillar 6132, and D-pillar 6133, when the vehicle 900 vibrates or collides, the tower 13, C-pillar 6132, and D-pillar 6133 can transfer the load to each other through the first longitudinal beam 621, effectively dispersing the impact energy. This helps reduce the risk of stress concentration in the tower 13, C-pillar 6132, and D-pillar 6133, improves the deformation resistance of the vehicle side 16, and further enhances the impact resistance and structural stability of the vehicle side 16.

[0103] In some examples of embodiments of the present invention, such as Figure 1 As shown, the rear body assembly 500 may further include: a first connecting beam 170, and the tower pack 13 includes: a tower pack body 131 and a tower pack extension structure 132, the tower pack extension structure 132 being connected between the tower pack body 131 and the side panel 12, a first longitudinal beam 621 being located above the tower pack body 131, and the first connecting beam 170 being fixed to the inner surface of the tower pack extension structure 132 and connected between the first longitudinal beam 621 and the tower pack body 131.

[0104] The first connecting beam 170 can be made of metal to give it good strength and rigidity. Specifically, the first connecting beam 170 can be made of metal materials such as steel and aluminum alloy. The first connecting beam 170 is fixed to the inner surface of the tower extension structure 132. Specifically, the first connecting beam 170 can be fixedly connected to the tower extension structure 132 by welding, bolting, integral connection, or other methods.

[0105] From top to bottom, the tower extension structure 132 can extend at an angle away from the side panel 12. The first connecting beam 170 is fixed to the inner surface of the tower extension structure 132. From top to bottom, the first connecting beam 170 can be tilted at an angle away from the side panel 12 in sync with the tower extension structure 132, so that the first connecting beam 170 can effectively support the tower extension structure 132. This is more conducive to reducing the risk of the tower extension structure 132 denting and deforming to the inner side of the rear body 510 when the vehicle 900 is hit, and is conducive to strengthening the deformation resistance of the tower extension structure 132.

[0106] like Figure 1 As shown, the first connecting beam 170 can extend along the vertical direction of the rear vehicle body 510, and the upper end of the first connecting beam 170 can be fixedly connected to the first longitudinal beam 621, and the lower end of the first connecting beam 170 can be fixedly connected to the tower pack body 131. Specifically, the upper end of the first connecting beam 170 can be fixedly connected to the first longitudinal beam 621 by welding, integral molding, bolt connection, etc. Similarly, the lower end of the first connecting beam 170 can be fixedly connected to the tower pack body 131 by welding, integral molding, bolt connection, etc.

[0107] By setting the first connecting beam 170 to be fixed on the inner surface of the tower extension structure 132, and the first connecting beam 170 connecting between the first longitudinal beam 621 and the tower body 131, when the vehicle 900 collides, the impact load can be efficiently transferred and dispersed between the first connecting beam 170, the first longitudinal beam 621, and the tower 13, which helps to reduce the risk of stress concentration in the rear body 510, further reduces the probability of deformation of the rear body 510, and helps to ensure the overall structural safety and reliability of the rear body 510.

[0108] In some examples of embodiments of the present invention, such as Figure 1 As shown, the rear body assembly 500 may further include: a second connecting beam 150, the second connecting beam 150 being fixed to the inner surface of the tower extension structure 132, and the second connecting beam 150 being connected between the tower body 131 and at least one second support beam 623.

[0109] A second connecting beam 150 connects the tower body 131 and at least one second support beam 623. As an example, a second connecting beam 150 can connect the tower body 131 and one second support beam 623. As another example, a second connecting beam 150 can connect the tower body 131 and both second support beams 623.

[0110] The second connecting beam 150 can be made of metal to give it good strength and rigidity. Specifically, the second connecting beam 150 can be made of metal materials such as steel and aluminum alloy. The second connecting beam 150 is fixed to the inner surface of the tower extension structure 132. Specifically, the second connecting beam 150 can be fixedly connected to the tower extension structure 132 by welding, bolting, integral connection, or other methods.

[0111] From top to bottom, the tower extension structure 132 can extend at an angle away from the side panel 12, and the second connecting beam 150 is fixed to the inner surface of the tower extension structure 132. From top to bottom, the second connecting beam 150 can be tilted at an angle away from the side panel 12 synchronously with the tower extension structure 132, so that the second connecting beam 150 can effectively support the tower extension structure 132. This helps to further reduce the risk of the tower extension structure 132 denting and deforming towards the inner side of the rear body 510 when the vehicle 900 is subjected to a side impact, and helps to further enhance the deformation resistance of the tower extension structure 132.

[0112] like Figure 1 As shown, the second connecting beam 150 can extend vertically along the rear vehicle body 510, and the upper end of the second connecting beam 150 can be fixedly connected to the second support beam 623, while the lower end of the second connecting beam 150 can be fixedly connected to the tower pack body 131. Specifically, the upper end of the second connecting beam 150 can be fixedly connected to the second support beam 623 by welding, integral molding, bolt connection, or other methods. Similarly, the lower end of the second connecting beam 150 can be fixedly connected to the tower pack body 131 by welding, integral molding, bolt connection, or other methods.

[0113] By setting the second connecting beam 150 to be fixed on the inner surface of the tower extension structure 132, and the second connecting beam 150 connecting between the second support beam 623 and the tower body 131, when the vehicle 900 collides, the impact load can be efficiently transferred and dispersed between the second connecting beam 150, the second support beam 623, and the tower 13, which is conducive to further reducing the risk of stress concentration in the rear body 510, further reducing the probability of deformation of the rear body 510, and ensuring the overall structural safety and reliability of the rear body 510.

[0114] In some examples of embodiments of the present invention, such as Figure 2 , Figure 4As shown, the rear body assembly 500 may further include: a reinforcing longitudinal beam 630 located below and fixed to the bottom of the body 14; the rear body 510 may also include a rear energy-absorbing structure 660 located behind the reinforcing longitudinal beam 630, with the rear end of the reinforcing longitudinal beam 630 fixedly connected to the rear energy-absorbing structure 660.

[0115] Among them, such as Figure 4 As shown, the bottom of the vehicle body 14 may include a third crossbeam 143, which extends along the left-right direction of the rear vehicle body 510. The first crossbeam 6121, the third crossbeam 143, and the second crossbeam 6122 are arranged sequentially along the front-rear direction of the rear vehicle body 510. The front end of the reinforcing longitudinal beam 630 can be connected to the third crossbeam 143. As an embodiment, the front end of the reinforcing longitudinal beam 630 can be fixedly connected to the third crossbeam 143 via a connector. The connector may include a sixth plate and a seventh plate, which are fixedly connected and arranged at an angle. The sixth plate can be fixedly connected to the third crossbeam 143, and the seventh plate can be fixedly connected to the reinforcing longitudinal beam 630, so that the reinforcing longitudinal beam 630 and the third crossbeam 143 are reliably connected via the connector. The rear energy-absorbing structure 660 can be an energy-absorbing box. The reinforcing longitudinal beam 630 is fixedly connected to the rear energy-absorbing structure 660. Specifically, the reinforcing longitudinal beam 630 can be fixedly connected to the rear energy-absorbing structure 660 by means of bolt connection, welding, or integral molding. The rear energy-absorbing structure 660 and the reinforcing longitudinal beam 630 can be set one-to-one.

[0116] In this embodiment, by setting up reinforcing longitudinal beams 630 that are fixedly connected to both the rear energy-absorbing structure 660 and the bottom of the vehicle body 14, when the rear of the vehicle 900 is impacted, the rear energy-absorbing structure 660 can first absorb the collision energy, and then the remaining collision energy can be transferred to the bottom of the vehicle body 14 through the reinforcing longitudinal beams 630. This helps to further reduce the risk of deformation of the rear body 510 and further improve the collision safety of the vehicle 900. At the same time, by setting up multiple reinforcing longitudinal beams 630 that are opposite to each other and spaced apart along the left and right directions of the rear body 510, the load transfer efficiency can be effectively improved, which is more conducive to reducing the risk of stress concentration in the rear body 510.

[0117] In some examples of embodiments of the present invention, there are two reinforcing longitudinal beams 630, which extend along the lower edge of the tower 13 of the two vehicle body sides 16 respectively.

[0118] The rear body assembly 500 may further include two reinforcing longitudinal beams 630, which are opposite to and spaced apart along the left-right direction of the rear body 510. The reinforcing longitudinal beams 630 may include a front longitudinal beam segment 631, a middle longitudinal beam segment 632, and a rear longitudinal beam segment 633. The middle longitudinal beam segment 632 connects the front longitudinal beam segment 631 and the rear longitudinal beam segment 633. From front to back, the front longitudinal beam segment 631 is inclined towards the other reinforcing longitudinal beam 630, the middle longitudinal beam segment 632 extends in a straight line along the front-rear direction of the rear body 510, and the rear longitudinal beam segment 633 is inclined away from the other reinforcing longitudinal beam 630.

[0119] The front longitudinal beam segment 631 and the middle longitudinal beam segment 632 are directly or indirectly connected, and the middle longitudinal beam segment 632 and the rear longitudinal beam segment 633 are directly or indirectly connected. As one embodiment, the rear end of the front longitudinal beam segment 631 and the front end of the middle longitudinal beam segment 632 can be directly connected by welding, bolting, or integral molding. As another embodiment, the front end of the front longitudinal beam segment 631 can be fixedly connected to the third crossbeam 143, the rear end of the front longitudinal beam segment 631 can be fixedly connected to the second crossbeam 6122, and the front end of the middle longitudinal beam segment 632 can be fixedly connected to the second crossbeam 6122, so that the front longitudinal beam segment 631 and the middle longitudinal beam segment 632 achieve a transitional connection through the second crossbeam 6122, thereby improving the connection reliability between the reinforcing longitudinal beam 630 and the vehicle body bottom 14.

[0120] As one embodiment, the rear end of the middle longitudinal beam segment 632 can be fixedly connected to the front end of the rear longitudinal beam segment 633 by means of welding, bolting, or integral molding. As another embodiment, the bottom of the vehicle body 14 may also include a fourth crossbeam 144. Along the front-rear direction of the rear vehicle body 510, the fourth crossbeam 144 can be located behind the second crossbeam 6122. The rear end of the middle longitudinal beam segment 632 can be fixedly connected to the fourth crossbeam 144, and the front end of the rear longitudinal beam segment 633 can be fixedly connected to the fourth crossbeam 144, so that the middle longitudinal beam segment 632 and the rear longitudinal beam segment 633 are transitionally connected through the fourth crossbeam 144, thereby improving the connection reliability between the reinforcing longitudinal beam 630 and the bottom of the vehicle body 14.

[0121] By setting the front longitudinal beam segment 631 to extend inclinedly towards the inner side of the rear vehicle body 510 from front to back, and the rear longitudinal beam segment 633 to extend in a straight line and to extend inclinedly towards the outer side of the rear vehicle body 510, the reinforcing longitudinal beam 630 can be arranged around the lower edge of the tower pack 13, which helps to reduce the risk of interference between the reinforcing longitudinal beam 630 and the structure below the tower pack 13, and helps to optimize the structural layout of the reinforcing longitudinal beam 630.

[0122] In some examples of embodiments of the present invention, such as Figure 3 , Figure 4 , Figure 5As shown, the rear body assembly 500 may further include: a bottom frame structure 640, which is located below and fixed to the rear body 510. The bottom frame structure 640 includes: a frame body 641 and a reinforcing structure 642. The frame body 641 includes two frame longitudinal beams 6411 and two frame transverse beams 6412. The two frame longitudinal beams 6411 are opposite to each other and spaced apart in the left-right direction of the rear body 510. The two frame transverse beams 6412 are spaced apart in the front-rear direction of the rear body 510 and are both connected between the two frame longitudinal beams 6411. The reinforcing structure 642 is located between the two frame transverse beams 6412 and fixed to the frame body 6411. A lower control arm mounting bracket 650 is fixed to the frame body 641. The lower control arm mounting bracket 650 is provided at the connection between the frame transverse beams 6412 and the frame longitudinal beams 6411. The lower control arm mounting bracket 650 is fixed to the reinforcing structure 642.

[0123] The bottom frame structure 640 is located below the bottom of the vehicle body 14 and can be fixedly connected to the bottom of the vehicle body 14, which helps to improve the rigidity of the rear body assembly 500. Specifically, the bottom frame structure 640 and the bottom of the vehicle body 14 can be fixedly connected by welding, bolting, or integral molding. The frame longitudinal beams 6411 and frame cross beams 6412 can both be made of metal materials, which can improve the strength and rigidity of the frame longitudinal beams 6411 and frame cross beams 6412. Specifically, the frame longitudinal beams 6411 and frame cross beams 6412 can both be made of metal materials such as aluminum alloy and steel.

[0124] The frame body 641 may include two frame longitudinal beams 6411 and two frame transverse beams 6412. The reinforcing structure 642 may be fixed to the frame body 641. As one embodiment, the reinforcing structure 642 may be fixedly connected to both frame transverse beams 6412. As another embodiment, the reinforcing structure 642 may be fixedly connected to both frame longitudinal beams 6411. As yet another embodiment, the reinforcing structure 642 may be fixedly connected to at least one frame transverse beam 6412 and at least one frame longitudinal beam 6411.

[0125] like Figure 5 As shown, both frame longitudinal beams 6411 can extend along the longitudinal direction of the rear vehicle body 510. As an example, both frame longitudinal beams 6411 can extend obliquely along the longitudinal direction of the rear vehicle body 510. As another example, both frame longitudinal beams 6411 can extend in a straight line along the longitudinal direction of the rear vehicle body 510. As yet another example, one frame longitudinal beam 6411 can extend in a straight line along the longitudinal direction of the rear vehicle body 510, and the other frame longitudinal beam 6411 can extend obliquely along the longitudinal direction of the rear vehicle body 510.

[0126] like Figure 5As shown, both frame beams 6412 can extend along the left and right directions of the rear vehicle body 510. In one embodiment, both frame beams 6412 can extend obliquely along the left and right directions of the rear vehicle body 510. In another embodiment, both frame beams 6412 can extend linearly along the left and right directions of the rear vehicle body 510. In yet another embodiment, one frame beam 6412 can extend linearly along the left and right directions of the rear vehicle body 510, and the other frame beam 6412 can extend obliquely along the left and right directions of the rear vehicle body 510.

[0127] As can be seen from the above, both frame longitudinal beams 6411 extend along the front-rear direction of the rear vehicle body 510, and both frame transverse beams 6412 extend along the left-right direction of the rear vehicle body 510. The two frame transverse beams 6412 are connected between the two frame longitudinal beams 6411, so that the two frame transverse beams 6412 and the two frame longitudinal beams 6411 together form the frame body 641. The structure of the frame body 641 is regular, which is conducive to improving the load transfer efficiency and overall structural rigidity of the frame body 641.

[0128] like Figure 5 As shown, the reinforcing structure 642 may include two reinforcing beams 6421, which may be cross-connected and fixedly connected. The ends of the reinforcing beams 6421 may extend to the connection points of the corresponding frame longitudinal beams 6411 and frame transverse beams 6412 and be fixedly connected to at least one of the corresponding frame longitudinal beams 6411 and frame transverse beams 6412. This can form a cross-support system between the two frame transverse beams 6412, so that the two reinforcing beams 6421 can support and constrain the frame body 641, which helps to reduce the risk of deformation of the frame body 641 and improve the overall structural stiffness of the bottom frame structure 640.

[0129] Both reinforcing beams 6421 can extend obliquely along the front and rear directions of the rear vehicle body 510, and the two reinforcing beams 6421 can be arranged to form an X-shaped structure. This X-shaped structure can provide stable support for the frame body 641 between the two frame crossbeams 6412, thereby improving the overall rigidity and deformation resistance of the bottom frame structure 640.

[0130] The front end of the reinforcing beam 6421 can extend to the connection between the front frame crossbeam 6412 and the corresponding side frame longitudinal beam 6411, and the rear end of the reinforcing beam 6421 can extend to the connection between the rear frame crossbeam 6412 and the corresponding side frame longitudinal beam 6411. This allows the two reinforcing beams 6421 to form diagonal constraints and supports on the frame body 641 inside the frame body 641, which is beneficial for optimizing the load transfer path of the rear body assembly 500 and further improving the structural stiffness of the rear body assembly 500.

[0131] Vehicle 900 may include a suspension system, which may include a lower control arm. The lower control arm of the suspension system may be mounted on a lower control arm mounting bracket 650. The lower control arm mounting bracket 650 is fixed to the frame body 641. Specifically, the lower control arm mounting bracket 650 may be fixedly connected to the frame body 641 by means of bolt connection, welding, integral molding, etc.

[0132] The lower control arm mounting bracket 650 can be fixed to at least one of the corresponding frame longitudinal beam 6411 and the corresponding frame cross beam 6412. The lower control arm mounting bracket 650 corresponding to the rear frame cross beam 6412 can be located below the bottom frame structure 640, and at least a portion of the lower control arm mounting bracket 650 corresponding to the front frame cross beam 6412 can be located on the outside of the corresponding side frame longitudinal beam 6411. This can make full use of the space on the lower side of the bottom frame structure 640 and the outer side of the frame longitudinal beam 6411, improve the space utilization of the rear body assembly 500, and help reduce the probability of interference between the lower control arm mounting bracket 650 and other internal structures of the vehicle 900.

[0133] The lower control arm mounting bracket 650 can be fixedly connected to the reinforcing structure 642. The lower control arm mounting bracket 650 can be fixedly connected to the reinforcing structure 642 by welding, bolting, riveting, etc., which helps to improve the connection strength between the lower control arm mounting bracket 650 and the reinforcing structure 642.

[0134] In this embodiment, the reinforcing structure 642 is disposed between the two frame beams 6412 and fixed to the frame body 641. The reinforcing structure 642 can effectively support the frame body 641 between the two frame beams 6412, which helps reduce the deformation risk of the frame body 641, thereby improving the overall rigidity and deformation resistance of the bottom frame structure 640. The lower control arm mounting bracket 650 is fixed to the frame body 641 and the reinforcing structure 642. When the vehicle 900 is impacted, the lower control arm mounting bracket 650 can efficiently transfer the load to the reinforcing structure 642 and the frame body 641, which helps reduce the stress concentration risk of the lower control arm mounting bracket 650 and improves the structural strength of the lower control arm mounting bracket 650. At the same time, the reinforcing structure 642 is also fixedly connected to the frame body 641, so that the reinforcing structure 642 and the frame body 641 can work together to bear the impact load, thereby improving the overall rigidity and impact resistance of the rear body assembly 500.

[0135] As one embodiment, the rear body assembly 500 may include a connecting structure 670, which can be connected between the reinforcing longitudinal beam 630 and the bottom frame structure 640. The connecting structure 670 can also be fixedly connected to the second crossbeam 6122. Under vehicle 900 driving and collision conditions, the load can be transferred and distributed among the vehicle bottom 14, the reinforcing longitudinal beam 630, and the bottom frame structure 640, which helps to improve the structural rigidity of the rear body assembly 500. The connecting structure 670 can be a connecting plate, connecting beam, or other similar structures.

[0136] As one example, the bottom frame structure 640 can be located below and fixed to the reinforcing longitudinal beam 630. As another example, a lower control arm mounting bracket 650 can be correspondingly provided at the connection between the frame crossbeam 6412 and the frame longitudinal beam 6411, and the lower control arm mounting bracket 650 is fixed to the reinforcing structure 642. As yet another example, the bottom frame structure 640 can be located below and fixed to the reinforcing longitudinal beam 630, and a lower control arm mounting bracket 650 can correspondingly be provided at the connection between the frame crossbeam 6412 and the frame longitudinal beam 6411, and the lower control arm mounting bracket 650 is fixed to the reinforcing structure 642.

[0137] Two frame crossbeams 6412 are connected to two frame longitudinal beams 6411 respectively to form four connection nodes. Each connection node can be provided with a lower control arm mounting bracket 650, that is, the rear body assembly 500 can be provided with multiple lower control arm mounting brackets 650. The rear body assembly 500 can be provided with two, three, four or other numbers of lower control arm mounting brackets 650. In this embodiment of the application, the rear body assembly 500 is provided with four lower control arm mounting brackets 650 as an example for explanation.

[0138] The connection between the frame crossbeam 6412 and the frame longitudinal beam 6411 is the location with the highest structural strength of the frame body 641. Placing the lower control arm mounting bracket 650 at this location allows the lower control arm mounting bracket 650 to efficiently transfer the load to the frame crossbeam 6412 and the frame longitudinal beam 6411 when the vehicle 900 is impacted. This helps reduce the risk of stress concentration in the lower control arm mounting bracket 650, improves the structural strength of the lower control arm mounting bracket 650, and enhances the connection reliability between the suspension system and the lower control arm mounting bracket 650. Ultimately, this improves the driving stability and handling safety of the vehicle 900.

[0139] In some examples of embodiments of the present invention, such as Figure 5 As shown, the bottom frame structure 640 may also include: a front crossbeam 524 and a rear crossbeam 525, with two frame longitudinal beams 6411 connected between the front crossbeam 524 and the rear crossbeam 525, and the front crossbeam 524 and the rear crossbeam 525 fixed to the rear vehicle body 510.

[0140] like Figure 5As shown, both the front crossbeam 524 and the rear crossbeam 525 can extend along the left and right directions of the rear vehicle body 510. Both the front crossbeam 524 and the rear crossbeam 525 can be made of metal materials, such as steel or aluminum alloy, which helps to improve the structural strength of the front crossbeam 524 and the rear crossbeam 525.

[0141] Two frame longitudinal beams 6411 are located between the front crossbeam 524 and the rear crossbeam 525, and both frame longitudinal beams 6411 can be fixedly connected to the front crossbeam 524 and the rear crossbeam 525. Specifically, the frame longitudinal beams 6411 can be fixedly connected to the front crossbeam 524 and the rear crossbeam 525 by welding, bolting, integral molding, etc., which helps to improve the connection reliability between the frame longitudinal beams 6411 and the front crossbeam 524 and the rear crossbeam 525, and helps to improve the overall rigidity of the bottom frame structure 640.

[0142] The front crossbeam 524 and the rear crossbeam 525 are fixed to the rear body 510. Specifically, both the front crossbeam 524 and the rear crossbeam 525 can be fixed to the lower part of the rear body 510. Both the front crossbeam 524 and the rear crossbeam 525 can be fixedly connected to the rear body 510 by means of bolts, welding, etc., which helps to improve the structural stability of the rear body component 500.

[0143] By setting a front crossbeam 524 and a rear crossbeam 525 in the bottom frame structure 640, and connecting two frame longitudinal beams 6411 between the front crossbeam 524 and the rear crossbeam 525, the front crossbeam 524 and the rear crossbeam 525 are fixed to the rear vehicle body 510. On the one hand, the structural rigidity of the bottom frame structure 640 can be enhanced. On the other hand, when the vehicle 900 is impacted, the bottom frame structure 640 can transfer the load to the rear vehicle body 510 through the front crossbeam 524 and the rear crossbeam 525. This helps to further reduce the risk of stress concentration in the bottom frame structure 640, and thus helps to further improve the impact resistance and durability of the bottom frame structure 640.

[0144] In some examples of embodiments of the present invention, such as Figure 5 As shown, the rear crossbeam 525 may include: a middle beam segment 5251 and two end beam segments 5252. The middle beam segment 5251 extends along the left and right direction of the rear vehicle body 510 and is fixedly connected to the frame longitudinal beam 6411. The middle beam segment 5251 is connected between the two end beam segments 5252. From bottom to top, both end beam segments 5252 extend obliquely and are fixed to the rear vehicle body 510.

[0145] The middle beam segment 5251 can extend along the left and right direction of the rear vehicle body 510, and along the left and right direction of the rear vehicle body 510, the two ends of the middle beam segment 5251 can be fixedly connected to the two end beam segments 5252 respectively. The middle beam segment 5251 and the two end beam segments 5252 can be fixedly connected by welding, integral molding, bolt connection or other methods, which is conducive to improving the structural strength of the rear crossbeam 525.

[0146] From bottom to top, both end beam segments 5252 extend obliquely. As one embodiment, both end beam segments 5252 can extend obliquely outwards towards the rear vehicle body 510 from bottom to top. As another embodiment, both end beam segments 5252 can extend obliquely inwards towards the rear vehicle body 510 from bottom to top. Figure 5 As shown, this embodiment of the application takes the example of both end beam segments 5252 extending obliquely outward from the bottom to the top towards the rear vehicle body 510. This can effectively increase the length of the rear crossbeam 525, which is beneficial for the rear crossbeam 525 to better adapt to the structural shape of the lower part of the rear vehicle body 510.

[0147] By setting two end beam segments 5252 to extend obliquely from bottom to top, it is beneficial to increase the distance between the bottom frame structure 640 and the rear body 510, which helps to reduce the risk of interference between the bottom frame structure 640 and the rear body 510. It also helps to optimize the structural design of the rear crossbeam 525, enabling the rear crossbeam 525 to better adapt to the installation posture and connection interface of the rear body 510.

[0148] In some examples of embodiments of the present invention, such as Figure 3 , Figure 5 As shown, the bottom frame structure 640 and the rear body 510 together define a second mounting space 540, which is used to accommodate the steering motor controller 550. The bottom frame structure 640 is fixed with a controller mounting bracket 560.

[0149] The second installation space 540 is formed between the bottom frame structure 640 and the rear vehicle body 510. The bottom frame structure 640 is fixedly provided with a controller mounting bracket 560. There can be one controller mounting bracket 560 or multiple controller mounting brackets 560. In this embodiment, multiple controller mounting brackets 560 are used as an example for explanation.

[0150] As one embodiment, the controller mounting bracket 560 can be disposed on the longitudinal beam 6411 of the bottom frame structure 640. As another embodiment, the controller mounting bracket 560 can be disposed on the transverse beam 6412 of the bottom frame structure 640. As another embodiment, the controller mounting bracket 560 can be disposed on the front transverse beam 524. As another embodiment, the controller mounting bracket 560 can be disposed on the rear transverse beam 525. The specific position of the controller mounting bracket 560 on the bottom frame structure 640 includes, but is not limited to, the above embodiments, and can be arranged according to actual needs. The controller mounting bracket 560 is fixedly connected to the bottom frame structure 640, which can enhance the structural stability of the vehicle 900. Specifically, the controller mounting bracket 560 can be fixed to the bottom frame structure 640 by welding, bolt connection, etc. This embodiment of the application takes the controller mounting bracket 560 being fixed to the bottom frame structure 640 by bolt connection as an example, which helps to reduce the difficulty of installing and removing the controller mounting bracket 560 and facilitates the later maintenance of the controller mounting bracket 560.

[0151] The bottom frame structure 640 and the rear body 510 jointly define a second mounting space 540 for accommodating the steering motor controller 550, and the controller mounting bracket 560 is fixed on the bottom frame structure 640. This can make full use of the space between the rear body 510 and the bottom frame structure 640, which is beneficial to improving the space utilization rate of the vehicle 900, improving the structural integration of the vehicle 900, reducing the risk of the steering motor controller 550 being affected by road impacts, and ensuring the reliability of the steering motor controller 550.

[0152] In some examples of embodiments of the present invention, such as Figure 5 As shown, there are multiple controller mounting brackets 560, which are respectively fixed to the rear crossbeam 525 and the rear frame crossbeam 6412.

[0153] The rear body assembly 500 may include two, three, four, or other controller mounting brackets 560, such as... Figure 5 As shown, this application will use the rear body assembly 500 including four controller mounting brackets 560 as an example for explanation. The four controller mounting brackets 560 can be respectively installed on the rear crossbeam 525 and the rear frame crossbeam 6412 of the bottom frame structure 640.

[0154] like Figure 5 As shown, two controller mounting brackets 560 can be installed on the rear crossbeam 525. The two controller mounting brackets 560 installed on the rear crossbeam 525 can be arranged sequentially along the left and right sides of the rear vehicle body 510, and both controller mounting brackets 560 installed on the rear crossbeam 525 can be located on the front side of the rear crossbeam 525. For example... Figure 5As shown, two additional controller mounting brackets 560 can be installed on the rear frame crossbeam 6412. The two controller mounting brackets 560 installed on the rear frame crossbeam 6412 can be arranged sequentially along the left and right directions of the rear vehicle body 510, and both controller mounting brackets 560 installed on the rear frame crossbeam 6412 can be installed on the rear side of the rear frame crossbeam 6412.

[0155] By fixing the controller mounting bracket 560 to the rear crossbeam 525 and the rear frame crossbeam 6412 respectively, the weight of the steering motor controller 550 can be effectively distributed, which helps to reduce the risk of stress concentration on the bottom frame structure 640. At the same time, when the vehicle is impacted, the steering motor controller 550 can transfer the load to the entire rear body frame 510 through the rear crossbeam 525 and the rear frame crossbeam 6412. This helps to optimize the load transfer path between the steering motor controller 550 and the rear body frame 510, reduce the risk of stress concentration on the steering motor controller 550, improve the impact resistance of the steering motor controller 550, and ensure the reliability of the steering motor controller 550.

[0156] In some examples of embodiments of the present invention, such as Figure 7 As shown, the rear vehicle frame 10 forms a trunk space 210 for mounting the charging port structure 220.

[0157] The trunk space 210 can be formed inside the vehicle 900, and the trunk space 210 can be located behind the rear seats of the vehicle 900. The trunk space 210 can be used to store items such as luggage, tools or emergency equipment.

[0158] The charging port structure 220 can be used for electrical connection with a battery device mounted on the chassis of vehicle 900, and the charging port structure 220 can be located within the trunk space 210. For example... Figure 7 As shown, the charging port structure 220 may include a conductive part and a mounting base 221. The mounting base 221 may have an open-top insertion interface 2212. The conductive part may be fixed inside the mounting base 221 and correspond to the insertion interface 2212. The conductive part can be used for electrical connection with the battery device. When the battery device needs to be charged, the plug-in structure of the external charging device can be inserted into the charging port structure 220 through the insertion interface 2212 and electrically connected to the conductive part to charge the battery device on the vehicle 900 chassis.

[0159] It should be noted that the mounting base 221 can be made of insulating material. Specifically, the mounting base 221 can be made of insulating materials such as plastic or thermoplastic elastomer, which helps to reduce the occurrence of faults such as leakage and short circuit. The conductive part can be a conductive post, conductive terminal, or other conductive structure to enable reliable electrical connection between the conductive part and the battery device or external charging equipment. The external charging equipment can be a charging pile, on-board charger, or other similar equipment, and the plug-in structure of the external charging equipment can be a charging plug, charging gun, or other similar structure.

[0160] Compared to the existing design where the charging port structure is located on the outer wall of the rear vehicle body, this embodiment optimizes the structural layout of the charging port structure 220 by placing it within the trunk space 210. This improves the rationality of the charging port structure 220's layout. When producing the vehicle 900, there is no need to separately open mounting holes for the charging port structure 220 on the corresponding outer wall of the rear vehicle body 510, which simplifies the manufacturing process of the vehicle 900 and reduces its manufacturing difficulty. At the same time, placing the charging port structure 220 within the trunk space 210 reduces the probability of rainwater and moisture entering the charging port structure 220, thus reducing the risk of short circuits, leakage, and other malfunctions. This improves the safety of the charging port structure 220 and the safety of the vehicle 900's charging operation.

[0161] In some examples of embodiments of the present invention, such as Figure 7 As shown, the rear vehicle body 510 has a receiving wall 230, which helps to define the trunk space 210. The receiving wall 230 forms a first receiving space that communicates with the trunk space 210, and at least a portion of the charging port structure 220 is located in the first receiving space.

[0162] The rear vehicle body 510 may include a bottom wall and two side walls. The two side walls may be located on the left and right sides of the trunk space 210, respectively. The two side walls may extend along the longitudinal direction of the rear vehicle body 510 and may be spaced apart along the lateral direction of the rear vehicle body 510. The bottom wall is located at the bottom of the trunk space 210 and may be connected between the two side walls. The two side walls are defined as the first side wall and the second side wall, respectively. The bottom wall, the first side wall, and the second side wall all contribute to defining the trunk space 210.

[0163] As one embodiment, the first space sidewall can be a receiving wall 230. As another embodiment, the second space sidewall can be a receiving wall 230. As another embodiment, the space bottom wall can be a receiving wall 230. As another embodiment, the first space sidewall and the space bottom wall can together constitute the receiving wall 230. As another embodiment, the second space sidewall and the space bottom wall can together constitute the receiving wall 230.

[0164] As one embodiment, the receiving wall 230 may be formed with a receiving groove that opens toward the trunk space 210, the receiving groove being a first receiving space. At least a portion of the charging port structure 220 is located within the first receiving space. As one embodiment, a portion of the charging port structure 220 is located within the receiving groove. As another embodiment, the entire charging port structure 220 is located within the receiving groove.

[0165] At least a portion of the charging port structure 220 is located within the first accommodating space, and the charging port structure 220 can be fixedly connected to the inner wall of the first accommodating space. Specifically, the charging port structure 220 can be fixedly connected to the inner wall of the first accommodating space by means of bolts, clips, welding, etc., which helps to ensure the structural stability of the charging port structure 220.

[0166] Placing at least a portion of the charging port structure 220 within the first accommodating space is beneficial for improving the structural compactness of the rear vehicle assembly 500, reducing the amount of space occupied by the charging port structure 220 in the trunk space 210, reducing the risk of interference between the charging port structure 220 and items in the trunk space 210, and further optimizing the spatial layout of the charging port structure 220.

[0167] In some examples of embodiments of the present invention, the bottom wall of the trunk space 210 is a receiving wall 230.

[0168] Specifically, by defining the bottom wall of the trunk space 210 as a receiving wall 230, a first receiving space is formed in the bottom wall that communicates with the trunk space 210. At least a portion of the charging port structure 220 is located in the first receiving space, which makes the charging port structure 220 closer to the bottom of the trunk space 210. This helps to further reduce the space encroachment of the charging port structure 220 on the trunk space 210, further reduce the probability of interference between the charging port structure 220 and the items in the trunk space 210, and further optimize the spatial layout of the charging port structure 220.

[0169] In some examples of embodiments of the present invention, the receiving wall 230 is formed with a receiving groove that opens toward the trunk space 210, the receiving groove being a first receiving space.

[0170] In the case where the bottom wall of the trunk space 210 is a receiving wall 230, the bottom wall can form a receiving groove with an open top, which is the first receiving space. The receiving groove can extend along the front-rear direction of the rear vehicle body 510, and it can also extend along the left-right direction of the rear vehicle body 510. The extension direction and layout position of the receiving groove can be flexibly adjusted according to the layout requirements of the vehicle 900.

[0171] The receiving groove can be stamped into the receiving wall 230, which simplifies the manufacturing process of the receiving wall 230 and improves the production efficiency of the rear vehicle body 510. By defining the receiving groove as the first receiving space, at least a portion of the charging port structure 220 is located within the first receiving space, which further reduces the encroachment of the charging port structure 220 on the trunk space 210 and further reduces the possibility of interference between the charging port structure 220 and items in the trunk space 210.

[0172] In some examples of embodiments of the present invention, such as Figure 7 As shown, the rear body assembly 500 may also include: a charging port mounting bracket 240, which is fixed within the trunk space 210, and a charging port structure 220 is fixed to the charging port mounting bracket 240.

[0173] The charging port mounting bracket 240 is fixed within the trunk space 210. As an example, the charging port mounting bracket 240 can be fixedly connected to the bottom wall of the trunk space 210. As another example, the charging port mounting bracket 240 can be fixedly connected to the first side wall of the trunk space 210. As yet another embodiment, the charging port mounting bracket 240 can be fixedly connected to the second side wall of the trunk space 210. As yet another example, the rear vehicle body 510 may include a rear side wall 250, which helps to define the trunk space 210 and is located at the rear of the trunk space 210. The charging port mounting bracket 240 can be fixedly connected to the rear side wall 250.

[0174] The charging port mounting bracket 240 is fixed within the trunk space 210, which helps ensure the structural stability of the charging port mounting bracket 240. The charging port mounting bracket 240 can be welded into the trunk space 210, or it can be fixedly connected to the corresponding structural components within the trunk space 210 using fasteners such as bolts and screws. Alternatively, the charging port mounting bracket 240 can be integrally formed with the corresponding structural components within the trunk space 210. In this embodiment, the example of the charging port mounting bracket 240 being welded into the trunk space 210 is used for illustration, which ensures the reliability of the connection between the charging port mounting bracket 240 and the rear vehicle body 510.

[0175] The charging port structure 220 is fixed to the charging port mounting bracket 240, which helps to reduce the risk of relative displacement between the charging port structure 220 and the charging port mounting bracket 240 and helps to ensure the positional stability of the charging port structure 220. As one embodiment, the charging port structure 220 can be detachably and fixedly connected to the charging port mounting bracket 240 by fasteners such as bolts and screws. As another embodiment, the charging port structure 220 can be fastened to the charging port mounting bracket 240 by snap-fit ​​or riveting.

[0176] By adding a charging port mounting bracket 240 to the rear body assembly 500 and fixing the charging port mounting bracket 240 in the trunk space 210, and fixing the charging port structure 220 to the charging port mounting bracket 240, the positional stability of the charging port mounting bracket 240 and the charging port structure 220 can be guaranteed, the risk of the charging port mounting bracket 240 and the charging port structure 220 becoming loose can be reduced, and the reliability of the charging port mounting bracket 240 and the charging port structure 220 can be improved.

[0177] In some examples of embodiments of the present invention, such as Figure 7 As shown, the charging port mounting bracket 240 is fixed to the rear side wall 250 of the trunk space 210.

[0178] The rear vehicle body 510 may also include a trunk lid, which can be used to open or close the trunk space 210. When the trunk lid is closed, it can help to limit the trunk space 210. The charging port mounting bracket 240 can be fixed to the inner wall of the rear side wall 250 of the space, so that the charging port structure 220 is arranged close to the rear side of the trunk space 210. This allows the user to see the charging port structure 220 directly after opening the trunk lid, facilitating charging operations and improving the charging convenience and operational efficiency of the battery device.

[0179] In some examples of embodiments of the present invention, such as Figure 7 As shown, the rear vehicle body 510 has a rear body panel, which is a space rear sidewall 250.

[0180] Among them, such as Figure 7 As shown, the rear of the vehicle body is located on the rear side of the trunk space 210. The rear of the vehicle body can be fixedly connected to the bottom wall of the space, and at the same time, the rear of the vehicle body can be fixedly connected between the two side walls of the space. The rear of the vehicle body can help to define the trunk space 210, and the trunk lid can be opened and closed and connected to the upper part of the rear of the vehicle body.

[0181] By defining the rear of the vehicle body as the rear sidewall 250, and fixing the charging port mounting bracket 240 to the rear sidewall 250, i.e., fixing the charging port mounting bracket 240 to the rear of the vehicle body, it is beneficial to improve the connection strength between the charging port mounting bracket 240 and the rear vehicle body 510, and to reduce the risk of relative displacement between the charging port mounting bracket 240 and the rear of the vehicle body. At the same time, by setting the charging port mounting bracket 240 to be directly fixedly connected to the rear of the vehicle body, there is no need to add additional connecting parts for connecting the charging port mounting bracket 240 and the rear vehicle body 510, which is beneficial to reduce the number of parts in the rear vehicle body component 500, improve the structural integration of the rear vehicle body component 500, and optimize the layout rationality of the charging port mounting bracket 240.

[0182] In some examples of embodiments of the present invention, such as Figure 8 As shown, the charging port mounting bracket 240 may include: a first body 241 and a second body 242. The first body 241 is located above the second body 242 and is fixedly connected to the second body 242. The first body 241 is used to install the charging port structure 220, and the second body 242 is fixed to the rear side wall 250 of the space.

[0183] Among them, such as Figure 8 As shown, the charging port mounting bracket 240 may include a first body 241 and a second body 242. The first body 241 may extend along the left and right direction of the rear vehicle body 510. The second body 242 is located below the first body 241, and the second body 242 may be fixedly connected to the first body 241, which helps to improve the structural strength of the charging port mounting bracket 240. Specifically, the first body 241 and the second body 242 may be integrally formed, or they may be fixedly connected by welding. Alternatively, the first body 241 and the second body 242 may be detachably connected by fasteners such as bolts and clips.

[0184] like Figure 8 As shown, the first body 241 may have a first mounting hole 2411 for assembling the charging port structure 220. The first mounting hole 2411 can penetrate the first body 241 along its thickness direction, and the shape of the first mounting hole 2411 matches the shape of the charging port structure 220. At least a portion of the charging port structure 220 can be embedded in the first mounting hole 2411 to achieve precise positioning of the charging port structure 220 and the first body 241.

[0185] Both the first body 241 and the second body 242 can be constructed as plate-shaped structures. The mounting base 221 of the charging port structure 220 can include a mounting plate 2211. The mounting plate 2211 has a plug-in interface 2212. When the charging port structure 220 and the charging port mounting bracket 240 are assembled together, the lower surface of the mounting plate 2211 can fit and be fixedly connected to the upper surface of the first body 241, which is beneficial to increasing the contact area between the charging port structure 220 and the charging port mounting bracket 240 and improving the connection strength between the charging port structure 220 and the charging port mounting bracket 240.

[0186] like Figure 8 As shown, the second body 242 may include a first side plate 2421 and a second side plate 2422. Both the first side plate 2421 and the second side plate 2422 can extend upward from back to front. The first side plate 2421 and the second side plate 2422 can be respectively disposed at the left and right ends of the first body 241, and both the first side plate 2421 and the second side plate 2422 can be fixedly connected to the first body 241. Both the first side plate 2421 and the second side plate 2422 can be fixed to the rear side wall 250 of the space. The ends of the first side plate 2421 and the second side plate 2422 that are away from the first body 241 along the front-rear direction of the rear vehicle body 510 can be fixedly connected to the rear side wall 250 of the space. The ends of the first side plate 2421 and the second side plate 2422 that are away from the first body 241 along the front-rear direction of the rear vehicle body 510 can be constructed as contoured structures that fit the inner wall of the rear side wall 250 of the space. This allows the charging port mounting bracket 240 to fit snugly against the rear side wall 250 of the space, making it easier to align and install the charging port mounting bracket 240 with the rear side wall 250 of the space. This helps to reduce the assembly gap between the charging port mounting bracket 240 and the rear side wall 250 of the space and improves the connection rigidity between the charging port mounting bracket 240 and the rear side wall 250 of the space.

[0187] In some examples of embodiments of the present invention, such as Figure 8 As shown, the second body 242 has a second receiving space 2423, which is used to receive the wiring harness 260 connected to the battery device.

[0188] In one embodiment, the first side plate 2421 may have a second receiving space 2423. In another embodiment, the second side plate 2422 may have a second receiving space 2423. In yet another embodiment, both the first side plate 2421 and the second side plate 2422 may have a second receiving space 2423.

[0189] As an example, the second body 242 may have a mounting opening with an open lower end, which serves as a second receiving space 2423. As another example, at least one of the first side plate 2421 and the second side plate 2422 may have a second mounting hole extending through the corresponding side plate in the left-right direction along the rear vehicle body 510, which serves as the second receiving space 2423. Figure 8 As shown, this application uses the installation port as the second receiving space 2423 as an example for explanation. The wiring harness 260 connected to the battery device is passed through the installation port, which can store and limit the wiring harness 260, and also facilitate the installation and removal of the wiring harness 260.

[0190] By providing a second receiving space 2423 for accommodating the wiring harness 260 connected to the battery device, on the one hand, the second receiving space 2423 can limit and constrain the wiring harness 260, ensuring the stability of the electrical connection between the battery device and the charging port structure 220. On the other hand, the second receiving space 2423 is directly formed on the second body 242, eliminating the need for additional independent wiring harness 260 fixing parts, which helps reduce the number of parts in the rear body 510 and lowers the manufacturing cost of the rear body 510.

[0191] According to a second aspect of the present invention, a vehicle 900 includes the rear body assembly 500 described above.

[0192] According to the embodiments of this application, the use of the rear body component 500 in the above embodiments of the vehicle 900 is beneficial to improving the impact resistance of the vehicle 900, improving the structural strength of the vehicle 900, and improving the collision safety of the vehicle 900.

[0193] The rear body assembly 500 and other components and operations of the vehicle 900 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0194] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0195] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rear vehicle body assembly, characterized in that, include: The rear body (510) includes a rear body frame (10), the rear body frame (10) includes a bottom body (14), a top body (15) and two side body parts (16), the two side body parts (16) are opposite to each other and spaced apart along the left and right directions of the rear body (510), the bottom body (14) and the top body (15) are connected between the two side body parts (16), the bottom body (14) is located below the top body (15), the side body part (16) includes: a side panel (12) and a tower pack (13), the side panel (12) is located above the tower pack (13) and is fixedly connected to the tower pack (13); A support structure (30) is provided between the two vehicle body sides (16) and is fixedly connected to the rear vehicle frame (10). The support structure (30) is used to support the rear vehicle frame (10). The support structure includes: two first support beams (31). The two first support beams (31) extend obliquely in the vertical direction. The two first support beams (31) are arranged crosswise and fixedly connected. The end of each first support beam (31) is fixedly connected to the rear vehicle frame (10). A top longitudinal beam (11) is formed at the connection between the vehicle top (15) and the two vehicle body sides (16). The upper ends of the two first support beams (31) are fixedly connected to the two top longitudinal beams (11) respectively. A first connecting bracket (910) is connected between the tower bag (13) and the support structure (30).

2. The rear vehicle assembly according to claim 1, characterized in that, The tower bag (13) includes: a tower bag body (131) and a tower bag extension structure (132), the tower bag extension structure (132) being connected between the tower bag body (131) and the side wall (12), and the first connecting bracket (910) being connected between the tower bag body (131) and the support structure (30).

3. The rear vehicle assembly according to claim 1, characterized in that, The lower ends of the two first support beams (31) are respectively fixedly connected to the two tower bags (13); and / or The lower ends of the two first support beams (31) are fixed to the bottom of the vehicle body (14).

4. The rear vehicle assembly according to claim 1, characterized in that, The rear body assembly (500) further includes a connecting beam (35), and the tower pack (13) includes a tower pack body (131) and a tower pack extension structure (132), the tower pack extension structure (132) being connected between the tower pack body (131) and the side wall (12), and the connecting beam (35) being connected between the tower pack bodies (131) of the two tower packs (13).

5. The rear vehicle assembly according to claim 1, characterized in that, The rear body assembly (500) further includes a reinforcing frame (620), which is provided between two of the body sides (16), and at least one of the body sides (16) is fixed with the reinforcing frame (620), and the reinforcing frame (620) is fixed to the bottom of the body (14).

6. The rear vehicle assembly according to claim 5, characterized in that, The rear body assembly (500) further includes a second connecting bracket (920). The tower pack (13) includes a tower pack body (131) and a tower pack extension structure (132). The tower pack extension structure (132) is connected between the tower pack body (131) and the side panel (12). Along the front-rear direction, at least one side of the tower pack body (131) is provided with the second connecting bracket (920). The second connecting bracket (920) is connected between the reinforcing frame (620) and the tower pack body (131).

7. The rear vehicle assembly according to claim 5, characterized in that, The reinforcing frame (620) includes: a first longitudinal beam (621), a second longitudinal beam (622), and a plurality of second support beams (623). The second support beams (623) extend along the vertical direction of the rear vehicle body (510). The first longitudinal beam (621) is set at a height higher than the second longitudinal beam (622) and is spaced apart from the second longitudinal beam (622). The first longitudinal beam (621) is fixed to the side of the vehicle body (16), and the second longitudinal beam (622) is fixed to the bottom of the vehicle body (14). The plurality of second support beams (623) are arranged along the front-rear direction of the rear vehicle body (510) and are all connected between the first longitudinal beam (621) and the second longitudinal beam (622).

8. The rear vehicle assembly according to claim 7, characterized in that, There are two second support beams (623). The tower bag (13) includes a tower bag body (131) and a tower bag extension structure (132). The tower bag extension structure (132) is connected between the tower bag body (131) and the side wall (12). At least a portion of one of the second support beams (623) is located on the front side of the tower bag body (131), and at least a portion of the other second support beam (623) is located on the rear side of the tower bag body (131).

9. The rear vehicle assembly according to claim 7, characterized in that, The second longitudinal beam (622) is also fixed to the tower package (13).

10. The rear vehicle assembly according to claim 7, characterized in that, The side panel (12) includes a C-column (6132) and a D-column (6133), and the first longitudinal beam (621) is fixedly connected to both the C-column (6132) and the D-column (6133).

11. The rear vehicle assembly according to claim 7, characterized in that, The rear body assembly (500) further includes a first connecting beam (170), and the tower pack (13) includes a tower pack body (131) and a tower pack extension structure (132), the tower pack extension structure (132) being connected between the tower pack body (131) and the side wall (12), the first longitudinal beam (621) being located above the tower pack body (131), and the first connecting beam (170) being fixed to the inner surface of the tower pack extension structure (132) and connected between the first longitudinal beam (621) and the tower pack body (131).

12. The rear vehicle assembly according to claim 7, characterized in that, The rear body assembly (500) further includes a second connecting beam (150), and the tower pack (13) includes a tower pack body (131) and a tower pack extension structure (132), the tower pack extension structure (132) being connected between the tower pack body (131) and the side wall (12), the second connecting beam (150) being fixed to the inner surface of the tower pack extension structure (132), and the second connecting beam (150) being connected between the tower pack body (131) and at least one second support beam (623).

13. The rear vehicle assembly according to any one of claims 1-12, characterized in that, The rear body assembly (500) further includes a reinforcing longitudinal beam (630), which is located below the bottom of the body (14) and fixed to the bottom of the body (14). The rear body (510) also includes a rear energy-absorbing structure (660) located behind the reinforcing longitudinal beam (630), with the rear end of the reinforcing longitudinal beam (630) fixedly connected to the rear energy-absorbing structure (660).

14. The rear vehicle assembly according to claim 13, characterized in that, There are two reinforcing longitudinal beams (630), and the two reinforcing longitudinal beams (630) extend along the lower edge of the tower pack (13) of the two vehicle body sides (16).

15. The rear vehicle assembly according to any one of claims 1-12, characterized in that, The rear body assembly (500) also includes: A bottom frame structure (640) is located below and fixed to the rear vehicle body (510). The bottom frame structure (640) includes a frame body (641) and a reinforcing structure (642). The frame body (641) includes two frame longitudinal beams (6411) and two frame transverse beams (6412). The two frame longitudinal beams (6411) are opposite to each other and spaced apart in the left-right direction of the rear vehicle body (510). The two frame transverse beams (6412) are spaced apart in the front-rear direction of the rear vehicle body (510) and are both connected between the two frame longitudinal beams (6411). The reinforcing structure (642) is located between the two frame transverse beams (6412) and fixed to the frame body (641). The lower swing arm mounting bracket (650) is fixed to the frame body (641). The lower swing arm mounting bracket (650) is provided at the connection between the frame crossbeam (6412) and the frame longitudinal beam (6411). The lower swing arm mounting bracket (650) is fixed to the reinforcing structure (642).

16. The rear body assembly (500) according to any one of claims 1-12, characterized in that, The rear body frame (10) forms a trunk space (210) for mounting a charging port structure (220).

17. A vehicle, characterized in that, Includes the rear body assembly (500) according to any one of claims 1-16.

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