A carbon fiber side wall assembly, a vehicle body, a body-in-white and a vehicle

Abstract

The application discloses a carbon fiber side wall assembly, a body, a body-in-white and a car, the main body is composed of carbon fiber composite material, and comprises a side wall outer plate, a side wall reinforcing plate, a side wall inner plate, a rear side wall upper inner plate and a wheel cover outer plate; the side wall reinforcing plate is fixed to the front inner surface of the side wall outer plate in position; the side wall inner plate is fixed to the B column area and the side beam of the inner surface of the side wall reinforcing plate in position; the rear side wall upper inner plate is fixed to the upper rear end of the inner surface of the side wall outer plate in position; the wheel cover outer plate is fixed to the lower rear end of the inner surface of the side wall outer plate in position; the door hinge, the lock ring and the lifting block of the side wall reinforcing plate are respectively provided with sheet metal reinforcing plates; the body-in-white is composed of various materials such as carbon fiber, aluminum material and steel plate through various connection modes such as riveting, bonding, spot welding and screwing, under the premise of meeting relevant performances, the weight is greatly reduced, the light weight level is improved, and energy saving and emission reduction are achieved.

Description

Technical Field

[0001] This invention relates to the field of automotive body technology, and more particularly to a carbon fiber side panel assembly, upper body, body-in-white, and automobile. Background Technology

[0002] With the dual-carbon strategy, energy conservation and emission reduction strategy, and policy adjustments for new energy vehicles, lightweighting technology for automobiles remains an important future development direction; and the body-in-white is an important component of a vehicle, and its degree of lightweighting makes a significant contribution to the vehicle's weight.

[0003] Traditional body-in-white is generally made by stamping steel sheets and then welding them. In order to reduce weight, the proportion of high-strength steel and hot-formed steel in the selection of steel is gradually increasing, but it is still difficult to meet the needs of continuously improving performance and driving range. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a carbon fiber sidewall assembly. By employing various materials such as carbon fiber, aluminum, and steel plates and combining them through riveting, bonding, spot welding, and screwing, a hybrid material body-in-white is synthesized. This achieves significant weight reduction, enhances lightweighting, and promotes energy conservation and emission reduction while meeting relevant performance requirements.

[0005] This invention proposes a carbon fiber side panel assembly, the main body of which is composed of carbon fiber composite material, including a side panel outer plate, a side panel reinforcing plate, a side panel inner plate, a rear side panel upper inner plate, and a wheel arch outer plate.

[0006] The side panel reinforcement plate is aligned and fixed to the front inner surface of the side panel outer plate;

[0007] The inner side panel is aligned and fixed to the B-pillar area and side beams on the inner surface of the side panel reinforcement plate;

[0008] The upper inner panel of the rear side panel is aligned and fixed to the upper rear end of the inner surface of the outer side panel;

[0009] The outer wheel arch panel is aligned and fixed to the lower rear end of the inner surface of the outer side panel;

[0010] The side panel reinforcement plate has metal reinforcement plates corresponding to the door hinge, lock ring, and lifting block positions. The main body of the side panel reinforcement plate is made of carbon fiber composite material. By adding metal reinforcement plates in local positions of the main body, the rigidity and strength of the fixing points are ensured. The sheet metal reinforcement plates include the front door upper hinge sheet metal reinforcement plate, the front door limiter sheet metal reinforcement plate, the front door lower hinge sheet metal reinforcement plate, the rear door upper hinge sheet metal reinforcement plate, the front door lock ring sheet metal reinforcement plate, the rear door limiter sheet metal reinforcement plate, the rear door lower hinge sheet metal reinforcement plate, the front lifting pad sheet metal reinforcement plate, and the rear lifting pad sheet metal reinforcement plate.

[0011] The side panel reinforcement includes a carbon fiber integrated door ring, a front door upper hinge sheet metal reinforcement plate, a front door limiter sheet metal reinforcement plate, a front door lower hinge sheet metal reinforcement plate, a rear door upper hinge sheet metal reinforcement plate, a front door lock ring sheet metal reinforcement plate, a rear door limiter sheet metal reinforcement plate, a rear door lower hinge sheet metal reinforcement plate, a front lift pad sheet metal reinforcement plate, a rear lift pad sheet metal reinforcement plate, and a carbon fiber side panel sill. The front door upper hinge sheet metal reinforcement plate and the front door limiter sheet metal reinforcement plate are sequentially bonded and fixed to the A-pillar area on the inner surface of the carbon fiber integrated door ring from top to bottom. The inner surface of the carbon fiber integrated door ring has sheet metal reinforcement plates for the upper rear door hinge, the front door lock ring, the rear door limiter, and the lower rear door hinge, which are bonded and fixed from top to bottom in the B-pillar area. The front and rear ends of the sill area on the inner surface of the carbon fiber integrated door ring have sheet metal reinforcement plates for the front and rear lifting pads, respectively. The sill area on the inner surface of the carbon fiber integrated door ring has a carbon fiber side sill screwed and fixed in the middle.

[0012] The carbon fiber integrated door ring has a main body wall thickness of 3mm-3.2mm and is constructed through 10 layers of plywood. The carbon fiber integrated door ring at the door hinge location has a wall thickness of 5mm-7mm and is constructed through 16-21 layers of plywood. The wiring harness mounting point of the carbon fiber integrated door ring has a wall thickness of 1mm-1.2mm and is constructed through 4 layers of plywood. The main body of the carbon fiber integrated door ring has a wall thickness of 3.12mm and is constructed through 10 layers of plywood. The A-pillar of the carbon fiber integrated door ring corresponds to the upper hinge of the front door. The wall thickness of the sheet metal reinforcement plate for the chain and the lower hinge of the front door is 7mm, and it is constructed by stacking 21 layers; the wall thickness of the upper B-pillar of the carbon fiber integrated door ring and the corresponding upper hinge sheet metal reinforcement plate, front door lock ring sheet metal reinforcement plate, rear door limiter sheet metal reinforcement plate, and lower hinge sheet metal reinforcement plate of the carbon fiber integrated door ring is 5.16mm, and it is constructed by stacking 16 layers; the wall thickness of the wiring harness installation point of the carbon fiber integrated door ring is 1.08mm, and it is constructed by stacking 4 layers; see also Figure 4As shown, in the existing sheet metal side panel reinforcement assembly, the A-pillar area of ​​the sheet metal side panel reinforcement needs to be weakened for safety reasons. Therefore, a new part 1' with a lower material and thickness than the rear door ring 2' is added. In areas such as the side beam and B-pillar, reinforcement is required for safety reasons, resulting in the addition of a first patch 3' and a second patch 4' in the side beam and B-pillar areas. This increases the number of parts, tooling costs, and labor time. Furthermore, to meet the process requirements of welding positioning and electrophoretic coating, the existing sheet metal side panel reinforcement requires positioning holes and paint flow holes in the sheet metal structure. To meet the requirements of stamping, sheet metal structures need to have a large draft angle, and local structures need to be spheroidized and smoothed, resulting in a complex overall part structure with many features. However, this invention can weaken or strengthen local structures by adjusting the local layup, including but not limited to thickness, layup direction, and carbon cloth selection, without disassembling the parts. This allows for more design freedom and more precise zoning, better meeting the needs of performance and lightweighting. It also eliminates the need for multiple rounds of welding and electrophoresis coating, making the molding process simpler and less demanding, resulting in a simple and smooth part structure.

[0013] The main body of the side panel has a wall thickness of 1.5mm-1.6mm and is constructed by stacking 8 layers; the wall thickness at the rear door lock ring position of the side panel is 2.8mm-3mm and is constructed by stacking 16 layers; the wall thickness at the fixing hole position of the side panel trim is 0.7mm-0.8mm and is constructed by stacking 4 layers.

[0014] The inner side panel includes an inner panel body, an air curtain guide bracket, an upper fixing bracket for the seat belt height adjuster, a lower fixing bracket for the seat belt height adjuster, and three interior trim fixing standard parts. The air curtain guide bracket is bonded and fixed to the junction of the inner surface side beam and the B-pillar of the inner panel body. The upper fixing bracket and the lower fixing bracket for the seat belt height adjuster are bonded and fixed to the upper part of the B-pillar on the outer surface of the inner panel body, respectively. One interior trim fixing standard part is bonded and fixed to the side beam on the outer surface of the inner panel body, and the other two interior trim fixing standard parts are bonded and fixed to the lower part of the B-pillar on the outer surface of the inner panel body, respectively.

[0015] The inner panel of the side wall has a main body wall thickness of 3mm-3.2mm and is constructed by stacking 10 layers; the wall thickness at the fixing point of the interior headliner on the side beam of the inner panel is 1mm-1.1mm and is constructed by stacking 4 layers; the wall thickness at the installation point of the interior trim panel of the inner panel is 1.4mm-1.45mm and is constructed by stacking 4 layers; the wall thickness at the installation point of the air curtain panel of the inner panel is 1.55mm-1.6mm and is constructed by stacking 5 layers; the wall thickness of the flange of the inner panel is 2.4mm-2.5mm and is constructed by stacking 8 layers.

[0016] The upper inner panel of the rear side panel includes the main body of the upper inner panel, the headliner handle fixing bracket, and three interior trim fixing components. The headliner handle fixing bracket is bonded and fixed to the upper front part of the inner surface of the main body of the upper inner panel of the rear side panel. The three interior trim fixing components are bonded and fixed to the upper and lower parts of the outer surface of the main body of the upper inner panel of the rear side panel, respectively. The main body wall thickness of the upper inner panel of the rear side panel is 2.75mm-2.8mm, and it is constructed by stacking 9 layers. The wall thickness at the interior headliner fixing point of the upper inner panel of the rear side panel is 1mm-1.1mm, and it is constructed by stacking 4 layers. The wall thickness at the wiring harness installation point of the upper inner panel of the rear side panel is 2mm-2.1mm, and it is constructed by stacking 7 layers. The wall thickness at the air curtain installation point of the upper inner panel of the rear side panel is 1.55mm-1.6mm, and it is constructed by stacking 5 layers.

[0017] The adhesive is a structural adhesive. This bonding method can provide a uniform stress distribution and cause less damage to the surface of carbon fiber composite materials, but it requires high performance of the adhesive. The bonding strength is usually between 5 MPa and 20 MPa. Common structural adhesives include epoxy resin-based or polyurethane-based adhesives.

[0018] A vehicle body includes a package frame assembly, a rear bulkhead assembly, a front crossbeam assembly of the roof, and a rear crossbeam assembly of the roof, as well as two left and right carbon fiber side assemblies. The main bodies of the package frame assembly, the rear bulkhead assembly, the front crossbeam assembly of the roof, and the rear crossbeam assembly of the roof are all made of carbon fiber composite material.

[0019] A body-in-white includes a floor assembly and an upper body, the floor assembly being disposed at the lower end of the upper body; compared to a traditional steel plate welded body-in-white, the body-in-white made of carbon fiber composite material reduces weight by more than 50% while meeting various performance requirements.

[0020] An automobile, including the aforementioned body-in-white.

[0021] Beneficial effects

[0022] This invention synthesizes a hybrid material body-in-white by using a variety of materials such as carbon fiber, aluminum, and steel plates and connecting them through various methods such as riveting, bonding, spot welding, and screwing. While meeting relevant performance requirements, it achieves significant weight reduction, improves lightweighting, and saves energy and reduces emissions. Attached Figure Description

[0023] Figure 1 This is an exploded structural diagram of the present invention.

[0024] Figure 2 This is a schematic diagram of the inner surface structure of the side reinforcement plate of the present invention.

[0025] Figure 3 This is a schematic diagram of the exploded structure of the outer surface of the side reinforcement plate of the present invention.

[0026] Figure 4 This is a schematic diagram of the overall breakdown structure of a sheet metal side panel reinforcement plate in the existing technology.

[0027] Figure 5 This is a schematic diagram of the outer surface structure of the side reinforcement plate of the present invention.

[0028] Figure 6 This is a schematic diagram of the inner surface structure of the outer side panel of the present invention.

[0029] Figure 7 This is a schematic diagram of the inner surface structure of the inner side panel of the present invention.

[0030] Figure 8 This is a schematic diagram of the outer surface structure of the inner side panel of the present invention.

[0031] Figure 9 This is a schematic diagram of the inner surface structure of the upper inner panel of the rear side enclosure of the present invention.

[0032] Figure 10 This is a schematic diagram of the outer surface structure of the upper inner panel of the rear side enclosure of the present invention.

[0033] In the picture:

[0034] 1' Part; 2' Rear door ring; 3' First patch plate; 4' Second patch plate;

[0035] 1. Side panel outer panel; 1.1. Side panel outer panel rear door lock ring; 1.2. Side panel outer trim fixing holes;

[0036] 2. Side panel reinforcement plate; 2.1. Carbon fiber integrated door ring; 2.2. Front door upper hinge sheet metal reinforcement plate; 2.3. Front door limiter sheet metal reinforcement plate; 2.4. Front door lower hinge sheet metal reinforcement plate; 2.5. Rear door upper hinge sheet metal reinforcement plate; 2.6. Front door lock ring sheet metal reinforcement plate; 2.7. Rear door limiter sheet metal reinforcement plate; 2.8. Rear door lower hinge sheet metal reinforcement plate; 2.9. Front lift pad sheet metal reinforcement plate; 2.10. Rear lift pad sheet metal reinforcement plate; 2.11. Carbon fiber side sill; 2.12. Upper part of the B-pillar of the carbon fiber integrated door ring; 2.13. Wiring harness installation point of the carbon fiber integrated door ring;

[0037] 3. Side panel inner panel; 3.1. Inner panel main body; 3.2. Air curtain guide bracket; 3.3. Upper fixing bracket for seat belt height adjuster; 3.4. Lower fixing bracket for seat belt height adjuster; 3.5. Standard fixing parts for interior trim; 3.6. Fixing point for interior headliner on the side beam of the side panel inner panel; 3.7. Mounting point for interior trim panel of the side panel inner panel; 3.8. Air curtain mounting point of the side panel inner panel; 3.9. Flanged edge of the side panel inner panel;

[0038] 4. Upper inner panel of the rear side panel; 4.1. Main body of the upper inner panel of the rear side panel; 4.2. Headliner handle fixing bracket; 4.3. Interior trim fixing parts; 4.4. Headliner fixing point of the main body of the upper inner panel of the rear side panel; 4.5. Wiring harness installation point of the main body of the upper inner panel of the rear side panel; 4.6. Air curtain installation point of the main body of the upper inner panel of the rear side panel;

[0039] 5. Wheel cover outer panel. Detailed Implementation

[0040] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0041] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0043] Example 1

[0044] See Figures 1-3 , Figures 5-10 As shown, a carbon fiber side panel assembly is mainly composed of carbon fiber composite material, including a side panel outer plate 1, a side panel reinforcing plate 2, a side panel inner plate 3, a rear side panel upper inner plate 4, and a wheel arch outer plate 5.

[0045] The side reinforcement plate 2 is aligned and fixed to the front inner surface of the side outer plate 1;

[0046] The inner side panel 3 is aligned and fixed to the B-pillar area and side beam on the inner surface of the side panel reinforcement plate 2;

[0047] The upper inner panel 4 of the rear side wall is aligned and fixed to the upper rear end of the inner surface of the outer panel 1 of the side wall;

[0048] The outer wheel cover 5 is aligned and fixed to the lower rear end of the inner surface of the outer side panel 1;

[0049] The side panel reinforcement plate 2 has metal reinforcement plates corresponding to the positions of the door hinges, lock rings, and lifting blocks.

[0050] The side panel reinforcement plate 2 includes a carbon fiber integrated door ring 2.1, a front door upper hinge sheet metal reinforcement plate 2.2, a front door limiter sheet metal reinforcement plate 2.3, a front door lower hinge sheet metal reinforcement plate 2.4, a rear door upper hinge sheet metal reinforcement plate 2.5, a front door lock ring sheet metal reinforcement plate 2.6, a rear door limiter sheet metal reinforcement plate 2.7, a rear door lower hinge sheet metal reinforcement plate 2.8, a front lift pad sheet metal reinforcement plate 2.9, a rear lift pad sheet metal reinforcement plate 2.10, and a carbon fiber side panel sill 2.11; the front door upper hinge sheet metal reinforcement plate 2.2, the front door upper hinge sheet metal reinforcement plate 2.2, and the front door lower hinge sheet metal reinforcement plate 2.3 are sequentially bonded and fixed to the A-pillar area on the inner surface of the carbon fiber integrated door ring 2.1 from top to bottom. The sheet metal reinforcement plate 2.3 for the limiter and the sheet metal reinforcement plate 2.4 for the lower front door hinge are attached to the inner surface of the carbon fiber integrated door ring 2.1. The B-pillar area is successively bonded and fixed with the sheet metal reinforcement plate 2.5 for the upper rear door hinge, the sheet metal reinforcement plate 2.6 for the front door lock ring, the sheet metal reinforcement plate 2.7 for the rear door limiter, and the sheet metal reinforcement plate 2.8 for the lower rear door hinge. The front and rear ends of the sill area on the inner surface of the carbon fiber integrated door ring 2.1 are respectively bonded and fixed with the sheet metal reinforcement plate 2.9 for the front lifting pad and the sheet metal reinforcement plate 2.10 for the rear lifting pad. The carbon fiber side sill 2.11 is screwed and fixed to the middle of the sill area on the inner surface of the carbon fiber integrated door ring 2.1.

[0051] The carbon fiber integrated door ring 2.1 has a main body wall thickness of 3.12mm and is constructed by stacking 10 layers. The carbon fiber integrated door ring 2.1 has a wall thickness of 7mm at the A-pillar corresponding to the front door upper hinge sheet metal reinforcement plate 2.2 and the front door lower hinge sheet metal reinforcement plate 2.4, and is constructed by stacking 21 layers. The upper part of the carbon fiber integrated door ring 2.12 at the B-pillar and the carbon fiber integrated door ring 2.1 corresponding to the rear door upper hinge sheet metal reinforcement plate 2.5, the front door lock ring sheet metal reinforcement plate 2.6, the rear door limiter sheet metal reinforcement plate 2.7, and the rear door lower hinge sheet metal reinforcement plate 2.8 have a wall thickness of 5.16mm and are constructed by stacking 16 layers. The wiring harness installation point 2.13 of the carbon fiber integrated door ring has a wall thickness of 1.08mm and is constructed by stacking 4 layers.

[0052]

[0053] The main body of the side panel 1 has a wall thickness of 1.52mm and is constructed by stacking 8 layers; the wall thickness at the rear door lock ring 1.1 position of the side panel has a wall thickness of 2.96mm and is constructed by stacking 16 layers; the wall thickness at the fixing hole 1.2 position of the side panel has a wall thickness of 0.76mm and is constructed by stacking 4 layers.

[0054]

[0055] The inner side panel 3 includes an inner panel body 3.1, an air curtain guide bracket 3.2, an upper fixing bracket for the seat belt height adjuster 3.3, a lower fixing bracket for the seat belt height adjuster 3.4, and three interior trim fixing standard parts 3.5. The air curtain guide bracket 3.2 is bonded and fixed to the junction of the inner surface side beam and the B-pillar of the inner panel body 3.1. The upper fixing bracket for the seat belt height adjuster 3.3 and the lower fixing bracket for the seat belt height adjuster 3.4 are bonded and fixed to the upper part of the B-pillar on the outer surface of the inner panel body 3.1, respectively. One interior trim fixing standard part 3.5 is bonded and fixed to the side beam on the outer surface of the inner panel body 3.1, and the other two interior trim fixing standard parts 3.5 are bonded and fixed to the lower part of the B-pillar on the outer surface of the inner panel body 3.1, respectively.

[0056] The inner panel body 3.1 of the side panel 3 has a wall thickness of 3.12mm and is constructed by stacking 10 layers; the wall thickness at the interior headliner fixing point 3.6 on the side panel edge beam is 1.08mm and is constructed by stacking 4 layers; the wall thickness at the interior trim panel mounting point 3.7 is 1.42mm and is constructed by stacking 4 layers; the wall thickness at the air curtain mounting point 3.8 is 1.56mm and is constructed by stacking 5 layers; and the wall thickness at the side panel flange 3.9 is 2.44mm and is constructed by stacking 8 layers.

[0057]

[0058] The upper inner panel 4 of the rear side wall includes the main body 4.1 of the upper inner panel 4.1, the headliner handle fixing bracket 4.2, and three interior trim fixing parts 4.3. The headliner handle fixing bracket 4.2 is bonded and fixed to the upper front end of the inner surface of the main body 4.1 of the upper inner panel 4.1. The three interior trim fixing parts 4.3 are bonded and fixed to the upper and lower parts of the outer surface of the main body 4.1 of the upper inner panel 4.1, respectively. The main body wall thickness of the upper inner panel 4.1 is 2.78mm, and it is constructed by stacking 9 layers. The wall thickness at the interior headliner fixing point 4.4 of the upper inner panel 4.1 is 1.08mm, and it is constructed by stacking 4 layers. The wall thickness at the wiring harness installation point 4.5 of the upper inner panel 4.1 is 2.1mm, and it is constructed by stacking 7 layers. The wall thickness at the air curtain installation point 4.6 of the upper inner panel 4.1 is 1.56mm, and it is constructed by stacking 5 layers.

[0059]

[0060] The adhesive is a structural adhesive. This bonding method can provide a uniform stress distribution and cause less damage to the surface of carbon fiber composite materials, but it requires high performance of the adhesive. The bonding strength is usually between 5 MPa and 20 MPa. Common structural adhesives include epoxy resin-based or polyurethane-based adhesives.

[0061] Example 2

[0062] A vehicle body includes a package frame assembly, a rear bulkhead assembly, a front crossbeam assembly of the roof, and a rear crossbeam assembly of the roof, as well as two left and right carbon fiber side assemblies. The main bodies of the package frame assembly, the rear bulkhead assembly, the front crossbeam assembly of the roof, and the rear crossbeam assembly of the roof are all made of carbon fiber composite material.

[0063] Example 3

[0064] A body-in-white includes a floor assembly and an upper body, the floor assembly being disposed at the lower end of the upper body.

[0065] Example 4

[0066] An automobile, including the aforementioned body-in-white.

[0067] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A carbon fiber side wall assembly, characterized by: The main body is made of carbon fiber composite material, including side wall outer plate (1), side wall reinforcing plate (2), side wall inner plate (3), rear side wall upper inner plate (4) and wheel cover outer plate (5); The side wall reinforcing plate (2) is fixed to the front inner surface of the side wall outer plate (1); The side wall inner plate (3) is fixed to the B column area and the side beam of the inner surface of the side wall reinforcing plate (2); The rear side wall upper inner plate (4) is fixed to the upper rear end of the inner surface of the side wall outer plate (1); The wheel cover outer plate (5) is fixed to the lower rear end of the inner surface of the side wall outer plate (1); The door hinge, lock ring and lifting block positions of the side wall reinforcing plate (2) are respectively provided with sheet metal reinforcing plates; the side wall reinforcing plate (2) includes carbon fiber integrated door ring (2.1), front door upper hinge sheet metal reinforcing plate (2.2), front door limiter sheet metal reinforcing plate (2.3), front door lower hinge sheet metal reinforcing plate (2.4), rear door upper hinge sheet metal reinforcing plate (2.5), front door lock ring sheet metal reinforcing plate (2.6), rear door limiter sheet metal reinforcing plate (2.7), rear door lower hinge sheet metal reinforcing plate (2.8), front lifting pad sheet metal reinforcing plate (2.9), rear lifting pad sheet metal reinforcing plate (2.10) and carbon fiber side wall rocker panel (2.11); the A column area of the inner surface of the carbon fiber integrated door ring (2.1) is sequentially bonded and fixed with the front door upper hinge sheet metal reinforcing plate (2.2), the front door limiter sheet metal reinforcing plate (2.3) and the front door lower hinge sheet metal reinforcing plate (2.4) from top to bottom; the B column area of the inner surface of the carbon fiber integrated door ring (2.1) is sequentially bonded and fixed with the rear door upper hinge sheet metal reinforcing plate (2.5), the front door lock ring sheet metal reinforcing plate (2.6), the rear door limiter sheet metal reinforcing plate (2.7) and the rear door lower hinge sheet metal reinforcing plate (2.8) from top to bottom; the front and rear ends of the rocker panel area of the inner surface of the carbon fiber integrated door ring (2.1) are respectively bonded and fixed with the front lifting pad sheet metal reinforcing plate (2.9) and the rear lifting pad sheet metal reinforcing plate (2.10); the middle part of the rocker panel area of the inner surface of the carbon fiber integrated door ring (2.1) is screw-fixed with the carbon fiber side wall rocker panel (2.11); The carbon fiber integrated door ring (2.1) has a main body wall thickness of 3mm-3.2mm and is composed of 10 layers of laminated stacking; the carbon fiber integrated door ring (2.1) has a wall thickness of 5mm-7mm at the position corresponding to the door hinge, and is composed of 16-21 layers of laminated stacking; the carbon fiber integrated door ring (2.1) has a wire harness installation point position wall thickness of 1mm-1.2mm, and is composed of 4 layers of laminated stacking; wherein the carbon fiber integrated door ring (2.1) has a main body wall thickness of 3.12mm and is composed of 10 layers of laminated stacking; the carbon fiber integrated door ring (2.1) has a wall thickness of 7mm at the position corresponding to the A-pillar of the front door upper hinge sheet metal reinforcement plate (2.2), the front door lower hinge sheet metal reinforcement plate (2.4), and is composed of 21 layers of laminated stacking; the upper part of the B-pillar of the carbon fiber integrated door ring (2.12) and the carbon fiber integrated door ring (2.1) have a wall thickness of 5.16mm at the position corresponding to the rear door upper hinge sheet metal reinforcement plate (2.5), the front door lock ring sheet metal reinforcement plate (2.6), the rear door limiter sheet metal reinforcement plate (2.7), and the rear door lower hinge sheet metal reinforcement plate (2.8), and are composed of 16 layers of laminated stacking; the wire harness installation point (2.13) of the carbon fiber integrated door ring has a wall thickness of 1.08mm and is composed of 4 layers of laminated stacking.

2. A carbon fiber side wall assembly according to claim 1, wherein: The main body wall thickness of the side wall outer plate (1) is 1.5mm-1.6mm, and is composed of 8 layers of laminated stacking; the wall thickness of the side wall outer plate rear door lock ring (1.1) is 2.8mm-3mm, and is composed of 16 layers of laminated stacking; the wall thickness of the side wall outer plate outer trim part fixing hole (1.2) is 0.7mm-0.8mm, and is composed of 4 layers of laminated stacking.

3. A carbon fiber side wall assembly according to claim 2, wherein: The side wall inner plate (3) includes an inner plate main body (3.1), an air curtain guide bracket (3.2), a safety belt height adjuster upper fixing bracket (3.3), a safety belt height adjuster lower fixing bracket (3.4), and three interior trim part fixing standard parts (3.5); the air curtain guide bracket (3.2) is adhesively fixed to the inner surface edge beam and the B-pillar junction of the inner plate main body (3.1); the safety belt height adjuster upper fixing bracket (3.3) and the safety belt height adjuster lower fixing bracket (3.4) are arranged in an upper and lower manner and adhesively fixed to the outer surface B-pillar upper part of the inner plate main body (3.1); one interior trim part fixing standard part (3.5) is adhesively fixed to the outer surface edge beam of the inner plate main body (3.1), and the other two interior trim part fixing standard parts (3.5) are arranged in an upper and lower manner and adhesively fixed to the outer surface B-pillar lower part of the inner plate main body (3.1).

4. A carbon fiber side wall assembly according to claim 3, wherein: The inner plate body (3.1) of the side wall inner plate (3) has a main body wall thickness of 3mm-3.2mm and is composed of 10 layers of laminated stacking; the inner decoration roof fixing point (3.6) of the side wall inner plate edge beam has a wall thickness of 1mm-1.1mm and is composed of 4 layers of laminated stacking; the inner decoration shield mounting point (3.7) of the side wall inner plate has a wall thickness of 1.4mm-1.45mm and is composed of 4 layers of laminated stacking; the air curtain mounting point (3.8) of the side wall inner plate has a wall thickness of 1.55mm-1.6mm and is composed of 5 layers of laminated stacking; the flanging (3.9) of the side wall inner plate has a wall thickness of 2.4mm-2.5mm and is composed of 8 layers of laminated stacking.

5. A carbon fiber side wall assembly according to claim 4, wherein: The rear side wall upper inner plate (4) comprises a rear side wall upper inner plate body (4.1), a roof handle fixing support (4.2), and three inner decoration piece fixing pieces (4.3); the roof handle fixing support (4.2) is adhesively fixed to the front upper end of the inner surface of the rear side wall upper inner plate body (4.1); the three inner decoration piece fixing pieces (4.3) are respectively adhesively fixed to the upper and lower parts of the outer surface of the rear side wall upper inner plate body (4.1); the main body wall thickness of the rear side wall upper inner plate body (4.1) is 2.75mm-2.8mm and is composed of 9 layers of laminated stacking; the wall thickness of the inner decoration roof fixing point (4.4) of the rear side wall upper inner plate body is 1mm-1.1mm and is composed of 4 layers of laminated stacking; the wall thickness of the wire harness mounting point (4.5) of the rear side wall upper inner plate body is 2mm-2.1mm and is composed of 7 layers of laminated stacking; the wall thickness of the air curtain mounting point (4.6) of the rear side wall upper inner plate body is 1.55mm-1.6mm and is composed of 5 layers of laminated stacking.

6. An upper body characterized by: The body is composed of carbon fiber composite material.

7. A body-in-white, characterized by: The body is composed of carbon fiber composite material.

8. An automobile characterized by comprising: The body is composed of carbon fiber composite material.

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