Automobile side wall rear assembly structure, automobile and assembling method

Abstract

The invention belongs to the technical field of automobile bodies in white, and provides an automobile side wall rear assembly structure, an automobile and an assembling method, and the automobile side wall rear assembly structure comprises a CD column upper section assembly, a wheel cover plate assembly, a rear wheel cover connecting plate assembly, a rear wheel cover reinforcing plate assembly and a charging seat mounting plate strip. The charging seat mounting plate belt is mounted on the surface deviating from the rear wheel cover reinforcing plate assembly, so that the charging seat can be mounted from the rear part of an automobile and does not need to enter the automobile; the charging seat mounting plate strip is independent, the size of a charging port is controllable, the side wall does not need to reserve an overlarge space for avoiding a mounting tool, the size of an opening is reduced, the size of a charging port cover is correspondingly reduced, the operation convenience is improved, the appearance attractiveness of a product is remarkably optimized, and the processing cost is reduced; due to the fact that the charging base installation plate strip is independent, the position of the charging base installation plate strip can be adjusted during installation, and interference is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automobile body-in-white, and particularly relates to an automobile side wall rear assembly structure, an automobile and an assembling method. BACKGROUND

[0002] In the design of automobile rear assembly structure, the charging port cover mounting structure is a key link. The existing traditional structure generally adopts a mode of installing the charging port cover from the outside to the inside of the automobile body. Since sufficient operation space needs to be reserved for external installation, the size of the charging port cover needs to be designed to be relatively large, and the corresponding opening size of the automobile body side wall outer plate is also increased. At the same time, the large-size charging port cover has high requirements for the installation position accuracy and poor operation flexibility, which leads to inconvenient installation and increases the matching difficulty with the side wall opening, thereby prolonging the overall installation time.

[0003] The existing technology has obvious defects. On the one hand, the side wall opening and the large size of the charging port cover caused by the reserved operation space increase the material consumption and processing difficulty of parts, increase the production cost, damage the integrity of the side line of the automobile body, and greatly reduce the appearance of the whole vehicle. On the other hand, the installation mode of "outside-in" makes it difficult for the installer to accurately control the position and angle of the charging port cover, which not only makes the installation operation inconvenient, but also easily causes the problem of poor matching of the charging port cover with the side wall opening and the surrounding parts, thereby affecting the assembly quality and production efficiency. SUMMARY

[0004] In order to solve the problems in the background art, the present application provides an automobile side wall rear assembly structure, an automobile and an assembling method.

[0005] In order to achieve the above-mentioned purpose, the following technical solutions are adopted in the present application: The present application provides an automobile side wall rear assembly structure, comprising: a CD column upper segment assembly; a wheel cover plate assembly located at one end of the CD column upper segment assembly and fixedly connected with the CD column upper segment assembly; a rear wheel cover connecting plate assembly fixedly connected with the CD column upper segment assembly at one end and fixedly connected with the wheel cover plate assembly at the other end; the CD column upper segment assembly, the wheel cover plate assembly and the rear wheel cover connecting plate assembly form a support frame of the automobile side wall after being enclosed; a rear wheel cover reinforcing plate assembly fixedly connected with the CD column upper segment assembly at one end and fixedly connected with the wheel cover plate assembly at the other end; a charging seat mounting plate strip located on the surface of the CD column upper segment assembly away from the rear wheel cover reinforcing plate assembly, fixedly connected with the CD column upper segment assembly at one end and fixedly connected with the wheel cover plate assembly at the other end.

[0006] Further, the CD column upper segment assembly comprises a C column connecting plate, a CD column inner plate and a D column reinforcing plate. The C-column connecting plate is in the shape of a Chinese character "n", one end of which is fixedly connected with the D-column reinforcing plate, and the other end of which is fixedly connected with the wheel cover plate assembly; The D-column reinforcing plate is fixedly connected with the rear wheel cover connecting plate assembly at an end away from the C-column connecting plate. The CD-column inner plate is fixedly connected at one end to the middle of the D-column reinforcing plate, and at the other end to the middle of the C-column connecting plate and the wheel cover plate assembly.

[0007] Further, the wheel cover plate assembly comprises a rear wheel cover outer plate and a rear wheel cover inner plate. The rear wheel cover outer plate comprises an integral first arc-shaped cover body and a first flange at the top of the first arc-shaped cover body. The rear wheel cover inner plate comprises an integral second arc-shaped cover body and a second flange at the top of the second arc-shaped cover body. The first flange and the second flange are fixedly connected, and the first arc-shaped cover body and the second arc-shaped cover body form a rear wheel cover.

[0008] Further, the first flange is fixedly connected with the CD-column inner plate.

[0009] Further, the charging seat mounting plate has a top fixedly connected with the CD-column inner plate and a bottom fixedly connected with the first arc-shaped cover body.

[0010] Further, the surface of the charging seat mounting plate is provided with a charging port for mounting a charging seat, and a pre-hanging piece is mounted at the charging port and connected with the charging seat.

[0011] Further, the rear wheel cover reinforcing plate assembly comprises a rear wheel cover inner reinforcing plate and a rear wheel cover upper reinforcing plate. The rear wheel cover inner reinforcing plate is fixedly connected with the second arc-shaped cover body, and the rear wheel cover upper reinforcing plate is fixedly connected with the surface of the CD-column inner plate away from the surface of the charging seat mounting plate.

[0012] Further, the rear wheel cover connecting plate assembly comprises a rear wheel cover connecting plate and a D-column lower connecting plate. One end of the rear wheel cover connecting plate is fixedly connected with the first flange or the second flange, and the other end is fixedly connected with the D-column lower connecting plate. The D-column lower connecting plate is fixedly connected at an end away from the rear wheel cover connecting plate with the D-column reinforcing plate.

[0013] The application also provides an automobile, which is a plug-in hybrid electric vehicle or a pure electric vehicle, and is equipped with the automobile side wall rear assembly structure.

[0014] The application also provides an assembly method for the automobile side wall rear assembly structure, comprising the following steps: The wheel cover plate assembly is assembled; The rear wheel cover reinforcing plate assembly is assembled to the surface of the wheel cover plate assembly facing the inside of the automobile; The upper section of the CD pillar assembly is assembled onto the outer surface of the wheel arch assembly facing the outside of the vehicle. One end of the rear wheel arch connecting plate assembly is fixedly connected to the upper section of the CD pillar assembly, and the other end is fixedly connected to the wheel arch plate assembly; and a charging seat mounting plate is installed on the surface of the upper section of the CD pillar assembly away from the rear wheel arch reinforcement plate assembly, so that the charging seat mounting plate is fixedly connected to both the upper section of the CD pillar assembly and the wheel arch plate assembly.

[0015] The beneficial effects of this invention are: 1. This invention installs the charging base mounting plate on the surface away from the rear wheel arch reinforcement plate assembly (i.e., the surface facing outwards on the vehicle), allowing the charging base to be installed from the rear of the vehicle without entering the vehicle. Moreover, the charging base mounting plate is independent, and its charging port size is controllable. The side panel does not need to reserve too much space to avoid the installation tools, thus reducing the opening size and the charging port cover size. This improves the ease of operation, significantly optimizes the product's appearance, and reduces processing costs. 2. Since the charging base mounting plate of the present invention exists independently, its position can be adjusted during installation to avoid interference; 3. The charging base mounting plate of the present invention has added pre-attached parts, which improves the reliability and convenience of installation, and saves installation time. 4. The assembly process of this invention adjusts the welding sequence to avoid the charging port installation space from the inside out, indirectly reducing the size of the charging port cover and side panel openings. In addition, to avoid the inconvenience of workers entering the vehicle to install the charging port from the inside out, which would waste installation time, the wheel arch outer panel and the CD pillar partial structure are adjusted to avoid this, so as to ensure the charging port installation tools and operating space, allowing people to install it from outside the vehicle, which greatly improves the installation time.

[0016] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of a rear side panel assembly structure of an automobile according to the present invention is shown; Figure 2 It showsFigure 1 A schematic diagram of the side structure; Figure 3a A cross-sectional view of the charging dock mounting plate and the upper section of the CD pillar assembly is shown. Figure 3b A cross-sectional view of the charging dock mounting plate and the exterior of the rear wheel arch is shown. Figure 4 A flowchart of the assembly method of the present invention is shown; Figure 5 The assembly process of the present invention is shown. Figure 1 ; Figure 6 The assembly process of the present invention is shown. Figure 2 ; Figure 7 The assembly process diagram of the present invention is shown in Figure 3; Figure 8 The assembly process of the present invention is shown. Figure 4 ; Figure 9 A schematic diagram showing the location of the charging dock for this invention is provided. Figure 10 A schematic diagram of the present invention without the charging dock is shown; Figure 11 A schematic diagram showing the charging dock installed from the outside of the car is shown; Figure 12 A schematic diagram showing the installation of the charging dock from the inside of the car is shown.

[0019] In the diagram: 1. Charging seat mounting plate; 101. Pre-mounted component; 2. Upper section assembly of C and D pillars; 201. C-pillar connecting plate; 202. Inner plate of C and D pillars; 203. Reinforcing plate of D pillar; 3. Outer plate of rear wheel arch; 301. First flange; 4. Inner plate of rear wheel arch; 401. Second arc-shaped cover; 402. Second flange; 5. Inner reinforcing plate of rear wheel arch; 6. Upper reinforcing plate of rear wheel arch; 7. Connecting plate of rear wheel arch; 8. Lower connecting plate of D pillar. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1The diagram shows a rear side panel assembly structure for an automobile, including a charging dock mounting plate 1, an upper CD pillar assembly 2, a wheel arch assembly, a rear wheel arch connecting plate assembly, and a rear wheel arch reinforcement plate assembly. The wheel arch assembly is located at the lower end of the upper CD pillar assembly 2 and is fixedly connected to it. One end of the rear wheel arch connecting plate assembly is fixedly connected to the upper CD pillar assembly 2, and the other end is fixedly connected to the wheel arch assembly. The upper CD pillar assembly 2, the wheel arch assembly, and the rear wheel arch connecting plate assembly together form a support frame for the automobile side panel. One end of the rear wheel arch reinforcement plate assembly is fixedly connected to the upper CD pillar assembly 2, and the other end is fixedly connected to the wheel arch assembly. The charging dock mounting plate 1 is located on the surface of the upper CD pillar assembly 2 facing away from the rear wheel arch reinforcement plate assembly, with one end fixedly connected to the upper CD pillar assembly 2 and the other end fixedly connected to the wheel arch assembly, serving as a dedicated mounting carrier for the automobile charging dock and meeting the installation requirements of the charging dock. This embodiment does not limit the specific method of "fixed connection". For example, riveting, welding (such as spot welding) and other processes can be used for connection.

[0022] It should be noted that, in Figure 1 In the middle, the charging seat mounting plate 1 is provided with a charging port for installing the charging seat, and a pre-mounted part 101 is installed at the charging port to improve the convenience of charging seat installation. In addition, while meeting the overall vehicle performance requirements, the charging seat mounting plate 1 itself forms a projection weld assembly to provide an installation position for the charging seat.

[0023] Combination Figure 1 and Figure 7 It can be seen that the upper section assembly 2 of the CD pillar includes a C-pillar connecting plate 201, a CD pillar inner plate 202, and a D-pillar reinforcing plate 203. The C-pillar connecting plate 201 is a "7"-shaped irregular structure, with its top left end welded to the D-pillar reinforcing plate 203 and its lower end welded to the wheel arch assembly. The end of the D-pillar reinforcing plate 203 away from the C-pillar connecting plate 201 is fixedly connected to the rear wheel arch connecting plate assembly. One end of the CD pillar inner plate 202 is fixedly connected to the middle of the D-pillar reinforcing plate 203, and the other end is simultaneously fixedly connected to the middle of the C-pillar connecting plate 201 and the wheel arch assembly, forming a multi-directional and stable connection structure.

[0024] like Figure 2 As shown, the wheel arch assembly includes an outer rear wheel arch panel 3 and an inner rear wheel arch panel 4, which are connected to form the rear wheel arch of the vehicle. Specifically, in conjunction with... Figure 3bIt is known that the rear wheel arch outer panel 3 adopts an integrated molding design, including a first arc-shaped cover 301 and a first flange 302 connected together, wherein the first flange 302 is located at the top of the first arc-shaped cover 301; correspondingly, the rear wheel arch inner panel 4 is also an integrated structure, consisting of a second arc-shaped cover 401 and a second flange 402, with the second flange 402 located at the top of the second arc-shaped cover 401. During assembly, the first flange 302 and the second flange 402 can be firmly connected by welding. This connection method is not only convenient to operate and has high connection strength, but also ensures that the first arc-shaped cover 301 and the second arc-shaped cover 401 enclose each other to form a rear wheel arch that fits the rear wheel contour, effectively ensuring the structural stability of the rear wheel arch, while facilitating connection and assembly with other vehicle body components (such as the aforementioned CD pillar upper section assembly 2, rear wheel arch connecting plate assembly, etc.).

[0025] Combination Figure 1 , Figure 2 and Figure 3b It can be seen that the first flange 302 of the rear wheel cover outer plate 3 is fixedly connected to the CD pillar inner plate 202 in the CD pillar upper section assembly 2, which can be achieved by spot welding.

[0026] Combination Figure 3a As can be seen, the top of the charging base mounting plate 1 and the inner plate 202 of the CD pillar upper section assembly 2 are connected by lap welding. Lap welding does not require complex beveling, and can quickly complete positioning and fixing. While ensuring connection strength, it greatly simplifies the assembly process and improves production efficiency; combined with Figure 3b It can be seen that its bottom is directly welded to the upper surface of the first arc-shaped cover 301 of the rear wheel cover outer plate 3. The welded connection point can fit tightly against the surface of the arc-shaped cover, avoiding loosening caused by assembly gaps.

[0027] Furthermore, such as Figure 2 As shown, the rear wheel arch reinforcement assembly includes an inner rear wheel arch reinforcement plate 5 and an upper rear wheel arch reinforcement plate 6. The inner rear wheel arch reinforcement plate 5 is fixedly connected to the second arc-shaped cover 401, and the upper rear wheel arch reinforcement plate 6 is fixedly connected to the inner plate 202 of the CD pillar away from the surface of the charging base mounting plate 1.

[0028] It should be noted that the bottom of the reinforcing plate 6 on the rear wheel cover is also welded to the body 401 of the second wheel cover. Moreover, the reinforcing plate 6 on the rear wheel cover needs to make way for the charging seat installation space. The avoidance area is reinforced by making a flange to compensate for the performance sacrifice of the internal structure in avoiding the charging port cover tool installation space and operation space.

[0029] Furthermore, combined Figure 1 and Figure 2It can be seen that the rear wheel arch connecting plate assembly includes a rear wheel arch connecting plate 7 and a lower D-pillar connecting plate 8. One end of the rear wheel arch connecting plate 7 is fixedly connected to the first flange 302 or the second flange 402, and the other end is fixedly connected to the lower D-pillar connecting plate 8. The end of the lower D-pillar connecting plate 8 away from the rear wheel arch connecting plate 7 is fixedly connected to the lower D-pillar reinforcing plate 203.

[0030] It should be noted that the rear wheel arch connecting plate assembly is mainly used to enhance the performance of the rear avoidance structure in the Y and Z directions. The rear connecting plate of the wheel arch connects to the inner and outer plates of the wheel arch at the full end, and is welded to the D-pillar at the rear end to form a connection, enhancing the local stiffness, modal stiffness, and mounting point stiffness of the entire vehicle in the X direction after the avoidance structure is completed. This achieves the charging base structure, which facilitates the installation and matching of the charging base and charging port cover, saves installation time, and ensures the overall vehicle performance while maintaining aesthetics.

[0031] Furthermore, the rear wheel arch connecting plate assembly in the rear side panel assembly primarily enhances the rear clearance performance of the vehicle body in the Y-direction (lateral) and Z-direction (vertical) directions. Its front end connects to the inner wheel arch panel 4 and the outer rear wheel arch panel 3, while its rear end is welded to the D-pillar reinforcement plate 203 (a sub-component of the upper section of the CD-pillar assembly 2). This connection layout significantly improves the vehicle's local stiffness, structural modal performance, and the stiffness of each mounting point in the X-direction (longitudinal) direction, providing a solid performance foundation for the rear side panel structure. In addition, this structural optimization not only enhances overall vehicle performance but also facilitates the assembly of charging dock components. Its stable structural foundation allows for a rational arrangement of the charging dock structure, facilitating the installation and matching of the charging dock and charging port cover, significantly saving assembly time. It also ensures that the overall vehicle performance is not affected while maintaining the installation accuracy of each component and considering aesthetics, achieving a balance between structural performance and assembly practicality.

[0032] An automobile, which is a plug-in hybrid electric vehicle or a pure electric vehicle, is equipped with the aforementioned automobile side rear assembly structure.

[0033] like Figure 4 The diagram illustrates an assembly method for a rear side panel assembly structure of an automobile, characterized by comprising the following steps: S1: Assemble the wheel arch assembly. Specifically, as follows: Figure 5 As shown, the rear wheel cover outer plate 3 and the rear wheel cover inner plate 4 are connected by welding to form the rear wheel cover structure.

[0034] S2: Assemble the rear wheel arch reinforcement assembly onto the surface of the wheel arch assembly facing inwards towards the vehicle. Specifically, as follows... Figure 6As shown, the inner reinforcing plate 5 and the upper reinforcing plate 6 of the rear wheel cover are pre-integrated by welding and other methods and then installed on the inner surface of the rear wheel cover assembly. Moreover, the shape of the inner reinforcing plate 5 of the rear wheel cover is adapted to the second arc-shaped cover 401, so that it can fit against the surface of the second arc-shaped cover 401 of the inner plate 4 of the rear wheel cover.

[0035] S3: Assemble the upper section of the CD pillar assembly 2 onto the outer surface of the wheel arch assembly facing the outside of the vehicle. Specifically, as follows: Figure 7 As shown, the CD main upper section assembly 2 is installed from the outside of the vehicle body. Its C-pillar connecting plate 201 is welded to the first flange 302 of the rear wheel arch outer plate 3, and its bottom can abut against the first arc-shaped cover 301.

[0036] S4: One end of the rear wheel arch connecting plate assembly is fixedly connected to the upper section of the CD pillar assembly 2, and the other end is fixedly connected to the wheel arch assembly; and the charging seat mounting plate 1 is mounted on the surface of the upper section of the CD pillar assembly 2 facing away from the rear wheel arch reinforcement plate assembly, so that the charging seat mounting plate 1 is simultaneously fixedly connected to both the upper section of the CD pillar assembly 2 and the wheel arch assembly. Specifically, as follows... Figure 8 As shown, the rear wheel arch connecting plate 7 and the lower D-pillar connecting plate 8 form an L-shaped sheet metal structure after connection. The end of the rear wheel arch connecting plate 7 furthest from the lower D-pillar connecting plate 8 is welded to the second flange 402, and the end of the lower D-pillar connecting plate 8 furthest from the rear wheel arch connecting plate 7 is welded to the lower end of the D-pillar reinforcing plate 203. After completing the above steps, it is necessary to determine whether a charging dock needs to be added. If so, the charging dock mounting plate 1 needs to be welded from the outside of the vehicle body, with its upper end welded to the inner D-pillar plate 202 (or C-pillar connecting plate 201) and its lower end welded to the first arc-shaped cover 301 of the outer rear wheel arch plate 3. Finally, the structure for installing the charging dock is as follows: Figure 9 As shown, the structure without a charging dock is as follows: Figure 10 As shown.

[0037] It should be noted that the reason for setting up the inner rear wheel arch reinforcement plate 5 and the upper rear wheel arch reinforcement plate 6 is that the charging socket installation method from the inside out will lead to a sacrifice in performance after the local surface structure of the CD pillar is avoided. The inner rear wheel arch reinforcement plate assembly can strengthen this structure to ensure the overall vehicle performance. In addition, the addition of the rear wheel arch connecting plate assembly at the lower part of the side panel assembly can improve the overall vehicle performance after avoidance.

[0038] like Figure 11 As shown, there are obvious inconveniences when the charging dock is installed externally: in order to meet the space required for installation, the side panel size needs to be increased to avoid obstructing the view. This will directly lead to an increase in the size of the side panel opening and the charging port cover, which will ultimately have an adverse effect on the product's appearance and cost control.

[0039] like Figure 12As shown, if the installation is changed to be done from the rear of the car, the worker has more operating space and a clearer field of vision, and can complete the work without entering the vehicle. At the same time, the side panel does not need to reserve too much space to avoid the installation tools, the opening size can be reduced, and the size of the charging port cover can also be reduced accordingly. This not only improves the convenience of operation, but also significantly optimizes the product's appearance.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rear side panel assembly structure for an automobile, characterized in that, include: CD column upper section assembly (2); The wheel cover assembly is located at one end of the upper section assembly (2) of the CD pillar and is fixedly connected to the upper section assembly (2) of the CD pillar; The rear wheel arch connecting plate assembly is fixedly connected at one end to the upper section assembly of the CD pillar (2) and at the other end to the wheel arch plate assembly; the upper section assembly of the CD pillar (2), the wheel arch plate assembly and the rear wheel arch connecting plate assembly together form a support frame for the side of the car. The rear wheel arch reinforcement plate assembly is fixedly connected at one end to the upper section assembly (2) of the CD pillar and at the other end to the wheel arch plate assembly; The charging base mounting plate (1) is located on the surface of the upper section of the CD pillar assembly (2) away from the rear wheel arch reinforcement plate assembly. One end is fixedly connected to the upper section of the CD pillar assembly (2), and the other end is fixedly connected to the wheel arch plate assembly.

2. The rear side panel assembly structure of an automobile according to claim 1, characterized in that, The upper section assembly (2) of the CD pillar includes a C pillar connecting plate (201), a CD pillar inner plate (202), and a D pillar reinforcing plate (203). The C-pillar connecting plate (201) is in the shape of "(7)", with one end fixedly connected to the D-pillar reinforcing plate (203) and the other end fixedly connected to the wheel cover assembly; The end of the D-pillar reinforcing plate (203) away from the C-pillar connecting plate (201) is fixedly connected to the rear wheel arch connecting plate assembly; One end of the CD pillar inner plate (202) is fixedly connected to the middle of the D pillar reinforcing plate (203), and the other end is fixedly connected to the middle of the C pillar connecting plate (201) and the wheel cover assembly.

3. The rear assembly structure of a car side panel according to claim 2, characterized in that, The wheel cover assembly includes a rear wheel cover outer panel (3) and a rear wheel cover inner panel (4). The rear wheel cover outer panel (3) includes an integral first arc-shaped cover (301) and a first flange (302) located on the top of the first arc-shaped cover (301). The rear wheel cover inner panel (4) includes an integral second arc-shaped cover (401) and a second flange (402) located on the top of the second arc-shaped cover (401). The first flange (302) and the second flange (402) are fixedly connected, and the first arc-shaped cover (301) and the second arc-shaped cover (401) are enclosed to form the rear wheel cover.

4. The rear assembly structure of a car side panel according to claim 3, characterized in that, The first flange (302) is fixedly connected to the inner plate (202) of the CD column.

5. The rear assembly structure of a car side panel according to claim 3, characterized in that, The top of the charging base mounting plate (1) is fixedly connected to the inner plate (202) of the CD column, and the bottom is fixedly connected to the first arc-shaped cover (301).

6. The rear assembly structure of a car side panel according to claim 1, characterized in that, The surface of the charging base mounting plate (1) is provided with a charging port for mounting the charging base, and a pre-mounted part (101) is installed at the charging port and is connected to the charging base.

7. The rear side panel assembly structure of an automobile according to claim 3, characterized in that, The rear wheel arch reinforcement assembly includes an inner rear wheel arch reinforcement plate (5) and an upper rear wheel arch reinforcement plate (6). The inner reinforcing plate (5) of the rear wheel cover is fixedly connected to the second arc-shaped cover (401), and the upper reinforcing plate (6) of the rear wheel cover is fixedly connected to the surface of the inner plate (202) of the CD pillar away from the charging seat mounting plate (1).

8. The rear side panel assembly structure of an automobile according to claim 3, characterized in that, The rear wheel arch connecting plate assembly includes a rear wheel arch connecting plate (7) and a D-pillar lower connecting plate (8). One end of the rear wheel arch connecting plate (7) is fixedly connected to the first flange (302) or the second flange (402), and the other end is fixedly connected to the lower connecting plate (8) of the D pillar; The end of the lower connecting plate (8) of the D-pillar away from the rear wheel arch connecting plate (7) is fixedly connected to the reinforcing plate (203) of the D-pillar.

9. A car, characterized in that, The vehicle is a plug-in hybrid electric vehicle or a pure electric vehicle, and is equipped with a rear side assembly structure as described in any one of claims 1-8.

10. An assembly method for a rear side panel assembly structure of an automobile as described in any one of claims 1-8, characterized in that, Includes the following steps: The wheel cover assembly is obtained by assembly; The rear wheel arch reinforcement assembly is assembled to the surface of the wheel arch assembly facing the inside of the vehicle. The upper section of the CD pillar assembly (2) is assembled to the surface of the wheel arch assembly facing outwards from the vehicle. One end of the rear wheel arch connecting plate assembly is fixedly connected to the upper section of the CD pillar assembly (2), and the other end is fixedly connected to the wheel arch assembly; and a charging seat mounting plate strip (1) is assembled on the surface of the upper section of the CD pillar assembly (2) away from the rear wheel arch reinforcing plate assembly, so that the charging seat mounting plate strip (1) is fixedly connected to both the upper section of the CD pillar assembly (2) and the wheel arch assembly.

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