Automobile body structure and automobile

Abstract

The invention provides an automobile body structure and an automobile. The automobile body structure comprises an aluminum floor assembly, a doorsill beam, a front anti-collision assembly, a rear anti-collision assembly, a column A assembly, a column B assembly and a connecting beam assembly. The two sides of the floor assembly are each connected with a threshold beam, a front anti-collision assembly is arranged at the front end of the floor assembly, and a rear anti-collision assembly is arranged at the rear end of the floor assembly. The lower end of the A column assembly is in lap joint with the front end of the doorsill beam, and the A column assembly is in lap joint with the front anti-collision assembly to form a front collision force transmission path; the lower end of the B column assembly is in lap joint with the rear end of the doorsill beam, and the B column assembly is in lap joint with the rear anti-collision assembly to form a rear collision force transmission path; the two ends of the connecting beam assembly are in lap joint with the two B column assemblies respectively, and a side face collision force transmission path is formed. According to the electric vehicle, the vehicle body structure is made of aluminum materials, the structure is novel, the weight of the electric vehicle body is reduced, and the design of a front collision force transmission path, a rear collision force transmission path and a side collision force transmission path is adopted.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle body structures, and in particular relates to a vehicle body structure and a vehicle. Background Art

[0002] At present, new energy vehicles are developing rapidly. Due to the great differences between the powertrain and other components of traditional fuel vehicles and new energy vehicles, the body structure should also be changed. At the same time, it is also necessary to consider that new energy vehicles have more battery packs, which are generally heavier, so the lightweight level needs to be considered. At present, the steel-aluminum hybrid body structure has become a current research hotspot, but cost and connection technology are a big problem; of course, some models are also modified on the basis of the traditional fuel steel body structure, lacking innovation in layout, body structure and material selection, and also facing the increase in curb weight, resulting in the original steel body structure unable to meet the collision performance requirements.

[0003] At present, there are two common body structures. One is the steel body structure, which has the problem of heavy weight; the other is the steel-aluminum hybrid body structure, which often encounters the problem of structural connection instability during collision and has poor collision safety performance. Currently, most new energy vehicle models are based on the modification of traditional body structures, and the body structure cannot meet the increasingly increasing requirements of collision safety performance and lightweight design of new energy vehicles. Summary of the invention

[0004] The invention provides a vehicle body structure to solve the problems of heavy weight and poor collision safety performance of the existing vehicle body structure.

[0005] A vehicle body structure includes an aluminum floor assembly, a door sill beam, a front anti-collision assembly, a rear anti-collision assembly, an A-pillar assembly, a B-pillar assembly and a connecting beam assembly;

[0006] The two sides of the floor assembly are respectively connected to a threshold beam, the front end of the floor assembly is provided with the front anti-collision assembly, and the rear end of the floor assembly is provided with the rear anti-collision assembly;

[0007] The lower end of the A-pillar assembly overlaps with the front end of the door sill beam, and the A-pillar assembly overlaps with the front anti-collision assembly to form a frontal collision force transmission path;

[0008] The lower end of the B-pillar assembly overlaps with the rear end of the door sill beam, and the B-pillar assembly overlaps with the rear anti-collision assembly to form a rear collision force transmission path;

[0009] The two ends of the connecting beam assembly are respectively overlapped with the two B-pillar assemblies to form a side collision force transmission path.

[0010] Preferably, the vehicle body structure further includes a vehicle body covering, the vehicle body covering is overlapped on the A-pillar assembly and the B-pillar assembly, and the vehicle body covering is made of carbon fiber composite material.

[0011] Preferably, the floor assembly comprises a front floor, a rear floor, a front wall panel cross beam casting and a front wall panel lower cross beam;

[0012] The front end of the front floor is connected to the lower cross beam of the front wall panel, the lower cross beam of the front wall panel is provided with the front cross beam casting, and the lower cross beam of the front wall panel is provided with the front anti-collision assembly;

[0013] The rear end of the front floor is connected to the front end of the rear floor, and the rear end of the rear floor is provided with the rear anti-collision assembly;

[0014] The two sides of the front floor and the rear floor are respectively connected to a threshold beam.

[0015] Preferably, the front anti-collision assembly includes a front anti-collision beam assembly, an energy absorption box, a front longitudinal beam and a front tower seat;

[0016] The two ends of the front anti-collision beam assembly are respectively connected to an energy absorption box, the rear end of the energy absorption box is connected to the front end of the front longitudinal beam, and the rear end of the front longitudinal beam overlaps the floor assembly and the A-pillar assembly;

[0017] A first portion of the front tower seat is overlapped on the front longitudinal beam, and a second portion of the front tower seat is overlapped on the A-pillar assembly.

[0018] Preferably, the front longitudinal beam comprises a front longitudinal beam front section, a front longitudinal beam middle section and a front longitudinal beam rear section which are connected in sequence;

[0019] The front end of the front longitudinal beam front section is connected to the rear end of the energy absorption box, and the front longitudinal beam front section is an aluminum alloy structure;

[0020] The middle section of the front longitudinal beam overlaps with the first part of the front tower seat, and the middle section of the front longitudinal beam is a low-pressure casting structure;

[0021] The rear section of the front longitudinal beam is overlapped with the floor assembly and the A-pillar assembly, and the rear section of the front longitudinal beam is a high-pressure casting structure.

[0022] Preferably, a plurality of convex ribs arranged transversely of the vehicle body are provided on the rear section of the front longitudinal beam.

[0023] Preferably, the front anti-collision assembly further includes an upper short beam, one end of which is connected to the front longitudinal beam, and the other end of which is connected to a position on the A-pillar assembly close to the front longitudinal beam.

[0024] Preferably, the upper short beam comprises a first connecting arm arranged in the transverse direction of the vehicle body, a second connecting arm extending from one end of the first connecting arm in a first direction, and a third connecting arm extending from one end of the second connecting arm in a second direction;

[0025] One end of the first connecting arm away from the second connecting arm is connected to the front longitudinal beam, and one end of the third connecting arm away from the second connecting arm is overlapped at a position on the A-pillar assembly close to the front longitudinal beam.

[0026] Preferably, the A-pillar assembly includes an A-pillar inner panel, an A-pillar outer panel and an A-pillar square tube;

[0027] The A-pillar inner panel is connected to the floor assembly, and the A-pillar outer panel is overlapped on the A-pillar inner panel to form an A-pillar support;

[0028] The first end of the A-pillar square tube is connected to the door sill beam, the second end of the A-pillar square tube is connected to the A-pillar support, and the front anti-collision assembly is tightly connected to the A-pillar square tube.

[0029] Preferably, the B-pillar assembly includes a B-pillar inner panel and a B-pillar outer panel;

[0030] The two ends of the connecting beam assembly are respectively connected to the B-pillar inner plate, and the B-pillar outer plate is overlapped on the B-pillar inner plate to form a B-pillar support;

[0031] The lower end of the B-pillar support is connected to the door sill beam, and the rear end of the B-pillar support is connected to the rear anti-collision assembly.

[0032] Preferably, the B-pillar outer panel comprises a first column segment, a second column segment, a third column segment and a fourth column segment which are connected in sequence vertically along the vehicle body;

[0033] One end of the first column section is connected to the threshold beam;

[0034] The first column segment and the second column segment are made of square tube aluminum structure, the third column segment is made of casting structure, and the fourth column segment is made of aluminum structure.

[0035] Preferably, the rear anti-collision assembly includes a rear longitudinal beam, a rear anti-collision beam, a rear longitudinal beam cover plate, a first connecting beam, a rear tower seat and a second connecting beam;

[0036] The first end of the rear longitudinal beam is connected to the door sill beam, and the second end of the rear longitudinal beam is connected to the rear anti-collision beam;

[0037] The rear longitudinal beam cover plate is overlapped on a portion of the rear longitudinal beam close to the door sill beam, one end of the first connecting beam is connected to the rear longitudinal beam cover plate, and a second end of the first connecting beam is connected to the B-pillar assembly;

[0038] The rear tower seat is installed on the rear longitudinal beam, the first end of the second connecting beam is connected to the rear tower seat, and the second end of the second connecting beam is connected to the B-pillar assembly.

[0039] Preferably, the rear longitudinal beam comprises a rear longitudinal beam front section, a rear longitudinal beam middle section and a rear longitudinal beam rear section which are connected in sequence;

[0040] One end of the front section of the rear longitudinal beam is connected to the door sill beam, and the other end of the front section of the rear longitudinal beam is integrally formed with the middle section of the rear longitudinal beam to form an arc-shaped casting, and the arc opening of the arc-shaped casting faces outside the vehicle;

[0041] One end of the rear section of the rear longitudinal beam is connected to the rear anti-collision beam, and the rear section of the rear longitudinal beam is made of an aluminum alloy structure.

[0042] Preferably, a connecting frame is provided on the rear anti-collision beam, and the rear longitudinal beam further comprises a first support beam, a second support beam and a third support beam;

[0043] The first end of the first support beam is connected to the B-pillar assembly, and the second end of the first support beam is connected to the rear tower seat;

[0044] The first end of the second support beam is connected to the rear tower seat, and the second end of the second support beam is connected to the connecting frame;

[0045] The first end of the third support beam is connected to the rear section of the rear longitudinal beam, and the second end of the third support beam is connected to the second support beam.

[0046] A car comprises the above-mentioned car body structure.

[0047] The present invention, the floor assembly, the door sill beam, the front anti-collision assembly, the rear anti-collision assembly, the A-pillar assembly, the B-pillar assembly and the connecting beam assembly are all made of aluminum, and are suitable for the development of pure electric vehicles or hybrid vehicle platforms with aluminum body structures, which can well make up for the structural shortcomings and difficulties of pure steel bodies and steel-aluminum hybrid body structures and achieve maximum lightweighting.

[0048] The existing body structure is prone to the phenomenon of the A-pillar assembly and the door sill beam welding points pulling off, and the B-pillar assembly and the door sill beam welding points pulling off when a side collision occurs. The body structure cannot meet the increasing collision safety performance requirements of new energy vehicles. In order to solve the problem that the body structure cannot meet the increasing collision safety performance requirements of new energy vehicles, in this example, a door sill beam is connected to each side of the floor assembly to form a support base, the front end of the floor assembly is provided with a front anti-collision assembly, and the rear end of the floor assembly is provided with a rear anti-collision assembly; the lower end of the A-pillar assembly overlaps the front end of the door sill beam, and the A-pillar assembly overlaps the front anti-collision assembly to form a frontal collision force transmission path. When a frontal collision occurs, the collision force is first offset by the front anti-collision assembly, and then transmitted to the A-pillar assembly, and then transmitted to the door sill beam after being offset by the A-pillar assembly. This arrangement can effectively prevent the frontal collision force from being transmitted to the position of the floor assembly, ensure the stability of the front passenger compartment, and reduce occupant injuries; the lower end of the B-pillar assembly overlaps the front end of the door sill beam, and the A-pillar assembly overlaps the front anti-collision assembly to form a frontal collision force transmission path. When a frontal collision occurs, the collision force is first offset by the front anti-collision assembly, and then transmitted to the A-pillar assembly, and then transmitted to the door sill beam after being offset by the A-pillar assembly. This arrangement can effectively prevent the frontal collision force from being transmitted to the position of the floor assembly, ensure the stability of the front passenger compartment, and reduce occupant injuries; The end of the connecting beam assembly overlaps the rear end of the door sill beam, and the B-pillar assembly overlaps the rear anti-collision assembly to form a rear collision force transmission path. When a rear collision occurs, the collision force is first offset by the rear anti-collision assembly, and then transmitted to the B-pillar assembly. After being offset by the B-pillar assembly, it is transmitted to the door sill beam. This arrangement can effectively prevent the rear collision force from being transmitted to the position of the floor assembly, ensure the stability of the front passenger compartment, and reduce occupant injuries; the two ends of the connecting beam assembly are respectively overlapped with the two B-pillar assemblies to form a side collision force transmission path. When a side collision occurs, the collision force acts on the door sill beam and the two B-pillar assemblies. The two ends of the connecting beam assembly are respectively overlapped with the two B-pillar assemblies, which can greatly reduce the deformation of the B-pillar assembly in a side collision and ensure the structural stability.

[0049] The body structure in this example is made of aluminum material with a novel structure, which can significantly reduce the weight of the electric vehicle body. At the same time, the design of the front collision force transmission path, the rear collision force transmission path and the side collision force transmission path ensures the comprehensive collision performance of the body structure while meeting the body stiffness, NVH and collision safety performance. Compared with the steel body structure, the weight of the whole vehicle is greatly reduced, the lightweight design requirements are met, and the overall performance of the vehicle is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is an axonometric view of the vehicle body structure of the present invention from a first viewing angle;

[0051] Figure 2 is an axonometric structural diagram of the vehicle body structure of the present invention from a second viewing angle;

[0052] Figure 3 is a top view of the vehicle body structure of the present invention;

[0053] Figure 4 is a front view of the vehicle body structure of the present invention;

[0054] Figure 5is an isometric view of the front anti-collision assembly of the present invention;

[0055] Figure 6 is an axonometric view of the floor assembly of the present invention;

[0056] Figure 7 It is an axonometric view of the rear anti-collision assembly of the present invention.

[0057] Among them, 1. Floor assembly; 11. Front floor; 12. Rear floor; 13. Front wall panel crossbeam casting; 14. Front wall panel lower crossbeam; 2. Door sill beam; 3. Front anti-collision assembly; 31. Front anti-collision beam assembly; 32. Energy absorption box; 33. Front longitudinal beam; 331. Front longitudinal beam front section; 332. Front longitudinal beam middle section; 333. Front longitudinal beam rear section; 334. Convex rib; 34. Front tower seat; 35. Upper short beam; 351. First connecting arm; 352. Second connecting arm; 353. Third connecting arm; 4. Rear anti-collision assembly; 41. Rear longitudinal beam; 411. Rear longitudinal beam front section; 412. Rear longitudinal beam middle section; 413. Rear longitudinal beam rear section; 414. The middle section of the beam; 413, the rear section of the rear longitudinal beam; 414, the first support beam; 415, the second support beam; 416, the third support beam; 42, the rear anti-collision beam; 43, the rear longitudinal beam cover plate; 44, the first connecting beam; 45, the rear tower seat; 46, the second connecting beam; 5, the A-pillar assembly; 51, the A-pillar inner plate; 52, the A-pillar outer plate; 53, the A-pillar square tube; 6, the B-pillar assembly; 61, the B-pillar inner plate; 62, the B-pillar outer plate; 621, the first column section; 622, the second column section; 623, the third column section; 624, the fourth column section; 7, the connecting beam assembly; 8, the body covering; 9, the connecting frame. DETAILED DESCRIPTION

[0058] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0059] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] An embodiment of the present invention provides a vehicle body structure, referring to Figure 1-7 The vehicle body structure includes an aluminum floor assembly 1, a door sill beam 2, a front anti-collision assembly 3, a rear anti-collision assembly 4, an A-pillar assembly 5, a B-pillar assembly 6 and a connecting beam assembly 7; the two sides of the floor assembly 1 are respectively connected to a door sill beam 2, the front end of the floor assembly 1 is provided with a front anti-collision assembly 3, and the rear end of the floor assembly 1 is provided with a rear anti-collision assembly 4; the lower end of the A-pillar assembly 5 overlaps with the front end of the door sill beam 2, and the A-pillar assembly 5 overlaps with the front anti-collision assembly 3 to form a frontal collision force transmission path; the lower end of the B-pillar assembly 6 overlaps with the rear end of the door sill beam 2, and the B-pillar assembly 6 overlaps with the rear anti-collision assembly 4 to form a rear collision force transmission path; the two ends of the connecting beam assembly 7 overlap with two B-pillar assemblies 6 respectively to form a side collision force transmission path.

[0062] As an example, the floor assembly 1, the door sill beam 2, the front anti-collision assembly 3, the rear anti-collision assembly 4, the A-pillar assembly 5, the B-pillar assembly 6 and the connecting beam assembly 7 are all made of aluminum, which is suitable for the development of pure electric vehicles or hybrid vehicle platforms with aluminum body structures, and can well make up for the shortcomings and difficulties of pure steel bodies and steel-aluminum hybrid body structures, and achieve maximum lightweighting.

[0063] In the case of a side collision, the existing vehicle body structure is prone to the phenomenon that the welding points between the A-pillar assembly 5 and the threshold beam 2 and the welding points between the B-pillar assembly 6 and the threshold beam 2 are pulled apart, and the vehicle body structure cannot meet the increasingly increasing requirements for collision safety performance of new energy vehicles. In order to solve the problem that the vehicle body structure cannot meet the increasingly increasing requirements for collision safety performance of new energy vehicles, in this example, a threshold beam 2 is connected to each side of the floor assembly 1 to form a support base, a front anti-collision assembly 3 is provided at the front end of the floor assembly 1, and a rear anti-collision assembly 4 is provided at the rear end of the floor assembly 1; the lower end of the A-pillar assembly 5 overlaps the front end of the threshold beam 2, and the A-pillar assembly 5 overlaps the front anti-collision assembly 3 to form a frontal collision force transmission path. When a frontal collision occurs, the collision force is first offset by the front anti-collision assembly 3, and then transmitted to the A-pillar assembly 5, and then transmitted to the threshold beam 2 after being offset by the A-pillar assembly 5. This arrangement can effectively prevent the frontal collision force from being transmitted to the position of the floor assembly 1, ensure the robustness of the front passenger compartment, and reduce occupant injuries; the B-pillar assembly 6 The lower end overlaps with the rear end of the door sill beam 2, and the B-pillar assembly 6 overlaps with the rear anti-collision assembly 4 to form a rear collision force transmission path. When a rear collision occurs, the collision force is first offset by the rear anti-collision assembly 4, and then transmitted to the B-pillar assembly 6. After being offset by the B-pillar assembly 6, it is transmitted to the door sill beam 2. This arrangement can effectively prevent the rear collision force from being transmitted to the position of the floor assembly 1, ensure the stability of the front passenger compartment, and reduce occupant injuries; the two ends of the connecting beam assembly 7 are respectively overlapped with the two B-pillar assemblies 6 to form a side collision force transmission path. When a side collision occurs, the collision force acts on the door sill beam 2 and the two B-pillar assemblies 6. The two ends of the connecting beam assembly 7 are respectively overlapped with the two B-pillar assemblies 6, which can greatly reduce the deformation of the B-pillar assembly 6 in a side collision and ensure the structural stability.

[0064] The body structure in this example is made of aluminum material with a novel structure, which can significantly reduce the weight of the electric vehicle body. At the same time, the design of the front collision force transmission path, the rear collision force transmission path and the side collision force transmission path ensures the comprehensive collision performance of the body structure while meeting the body stiffness, NVH and collision safety performance. Compared with the steel body structure, the weight of the whole vehicle is greatly reduced, the lightweight design requirements are met, and the overall performance of the vehicle is greatly improved.

[0065] In one embodiment, referring to Figure 1-4 The vehicle body structure also includes a vehicle body covering member 8, which is overlapped on the A-pillar assembly 5 and the B-pillar assembly 6, and the vehicle body covering member 8 is made of carbon fiber composite material.

[0066] As an example, it is introduced that the vehicle body structure also includes a vehicle body covering 8, which is overlapped on the A-pillar assembly 5 and the B-pillar assembly 6 to connect the two A-pillar assemblies 5 and the two B-pillar assemblies 6 of the whole vehicle. The vehicle body covering 8 is made of carbon fiber composite material, which has excellent lightweight effect and mechanical properties, can protect the vehicle body well, and can also integrate and decompose the collision force of the A-pillar assembly 5 and the B-pillar assembly 6, thereby ensuring the stability of the front passenger compartment and reducing occupant injuries.

[0067] In one embodiment, referring to Figure 2 and Figure 6 The floor assembly 1 includes a front floor 11, a rear floor 12, a front wall panel cross beam casting 13 and a front wall panel lower cross beam 14; the front end of the front floor 11 is connected to the front wall panel lower cross beam 14, the front wall panel cross beam casting 13 is provided on the front wall panel lower cross beam 14, and the front anti-collision assembly 3 is provided on the front wall panel lower cross beam 14; the rear end of the front floor 11 is connected to the front end of the rear floor 12, and the rear end of the rear floor 12 is provided with a rear anti-collision assembly 4; a door sill beam 2 is connected to both sides of the front floor 11 and the rear floor 12 respectively.

[0068] As an example, the floor assembly 1 includes a front floor 11, a rear floor 12, a front wall panel cross beam casting 13 and a front wall panel lower cross beam 14. The rear end of the front floor 11 is connected to the front end of the rear floor 12. Both sides of the front floor 11 and the rear floor 12 are respectively connected with a threshold beam 2 to form the bottom structure of the passenger compartment. The front end of the front floor 11 is connected to the front wall panel lower cross beam 14. The front wall panel lower cross beam 14 is provided with a front wall panel cross beam casting 13. The front wall panel lower cross beam 14 is provided with a front anti-collision assembly 3. A rear anti-collision assembly 4 is provided at the rear end of the plate 12. The front anti-collision assembly 3 resists the frontal collision force, and the rear anti-collision assembly 4 resists the rear collision force. The two are used together to improve the collision performance of the vehicle body. When the vehicle collides head-on, the collision force is transmitted to the front wall panel cross beam casting 13 through the front anti-collision assembly 3. The front wall panel cross beam casting 13 and the front wall panel lower cross beam 14 are connected by FDS to improve the reliability of the structural connection, prevent the front anti-collision assembly 3 from invading the passenger compartment, and ensure the stability of the passenger compartment.

[0069] In one embodiment, referring to Figure 1 , Figure 3 and Figure 5 The front anti-collision assembly 3 includes a front anti-collision beam assembly 31, an energy absorption box 32, a front longitudinal beam 33 and a front tower seat 34; the two ends of the front anti-collision beam assembly 31 are respectively connected to an energy absorption box 32, the rear end of the energy absorption box 32 is connected to the front end of the front longitudinal beam 33, and the rear end of the front longitudinal beam 33 overlaps the floor assembly 1 and the A-pillar assembly 5; the first part of the front tower seat 34 overlaps the front longitudinal beam 33, and the second part of the front tower seat 34 overlaps the A-pillar assembly 5.

[0070] As an example, the front anti-collision assembly 3 includes a front anti-collision beam assembly 31, an energy absorption box 32, a front longitudinal beam 33 and a front tower seat 34. When a head-on collision occurs, the front anti-collision beam assembly 31 is arranged at the frontmost front of the vehicle body structure. An energy absorption box 32 is connected to each end of the front anti-collision beam assembly 31. The collision force is transmitted backward from the front anti-collision beam assembly 31 to the energy absorption box 32 connected thereto. The rear end of the energy absorption box 32 is connected to the front end of the front longitudinal beam 33. The collision force is transmitted to the front longitudinal beam 33 via the energy absorption box 32. The rear end of the front longitudinal beam 33 overlaps the floor assembly 1 and the A-pillar assembly 5. The collision force is transmitted to the floor assembly 1 and the A-pillar assembly 5 in two paths through the front longitudinal beam 33. This arrangement can well decompose and offset the collision force, thereby preventing the structure of the front anti-collision assembly 3 from invading the passenger compartment. Among them, the front anti-collision beam assembly 31 is connected to the front end of the energy absorption box 32 by welding or screwing, the first part of the front tower seat 34 is overlapped on the middle part of the front longitudinal beam 33, the second part of the front tower seat 34 is overlapped on the part of the A-pillar assembly 5 extending above the front longitudinal beam 33, the front tower seat 34 and the front longitudinal beam 33 are connected by a mixed form of bolts and FDS, and the front tower seat 34 and the A-pillar assembly 5 are connected by a mixed form of bolts and FDS. The front longitudinal beam 33 and the A-pillar assembly 5 can be connected together through the front tower seat 34, thereby increasing the connection area between the front longitudinal beam 33 and the A-pillar assembly 5, ensuring that the structural connection is more stable and improving the collision performance of the vehicle body.

[0071] In one embodiment, referring to Figure 1 , Figure 3 and Figure 5 The front longitudinal beam 33 includes a front longitudinal beam front section 331, a front longitudinal beam middle section 332 and a front longitudinal beam rear section 333 which are connected in sequence; the front end of the front longitudinal beam front section 331 is connected to the rear end of the energy absorption box 32, and the front longitudinal beam front section 331 is an aluminum alloy structure; the front longitudinal beam middle section 332 overlaps the first part of the front tower seat 34, and the front longitudinal beam middle section 332 is a low-pressure casting structure; the front longitudinal beam rear section 333 overlaps the floor assembly 1 and the A-pillar assembly 5, and the front longitudinal beam rear section 333 is a high-pressure casting structure.

[0072] As an example, the front longitudinal beam 33 includes a front longitudinal beam front section 331, a front longitudinal beam middle section 332 and a front longitudinal beam rear section 333 which are connected in sequence. The front longitudinal beam front section 331 and the front longitudinal beam middle section 332 are connected by welding, wherein the front longitudinal beam middle section 332 has a characteristic hole to increase the connection area with the front longitudinal beam front section 331, the front longitudinal beam middle section 332 and the front longitudinal beam rear section 333 are connected by bolts, and the front longitudinal beam rear section 333 is connected to the A-pillar assembly 5 by FDS, which is novel in design. The front end of the front longitudinal beam front section 331 is connected to the rear end of the energy absorption box 32, and the front longitudinal beam front section 331 is an aluminum alloy structure, which can reduce the weight of the front longitudinal beam 33 and meet the lightweight design requirements. The middle section 332 of the front longitudinal beam overlaps with the first part of the front tower seat 34. The middle section 332 of the front longitudinal beam is a low-pressure casting structure with a bending and fracture feature design (when the pre-designed collision force is reached, the low-pressure casting structure is broken). During a frontal high-speed collision, after the energy absorption box 32 and the front longitudinal beam front section 331 are completely crushed, the middle section 332 of the front longitudinal beam is broken, and the collision force of the force transmission path is interrupted, which can prevent the middle section 332 of the front longitudinal beam and the rear section 333 of the front longitudinal beam from invading the passenger compartment, ensuring the robustness of the passenger compartment and reducing occupant injuries. The rear section 333 of the front longitudinal beam overlaps with the floor assembly 1 and the A-pillar assembly 5. The rear section 333 of the front longitudinal beam is a high-pressure casting structure, which increases the overlap area of ​​the overlap with the floor assembly 1 and the A-pillar assembly 5, and the structure is stable, ensuring the robustness of the passenger compartment.

[0073] In one embodiment, referring to Figure 5 A plurality of convex ribs 334 arranged along the transverse direction of the vehicle body are provided on the rear section 333 of the front longitudinal beam.

[0074] As an example, a plurality of convex ribs 334 arranged along the transverse direction of the vehicle body are provided on the rear section 333 of the front longitudinal beam, which can strengthen the strength of the rear section 333 of the front longitudinal beam and fully reduce the weight while meeting the strength performance.

[0075] In one embodiment, referring to Figure 1 The front anti-collision assembly 3 also includes an upper short beam 35, one end of the upper short beam 35 is connected to the front longitudinal beam 33, and the other end of the upper short beam 35 is connected to the position of the A-pillar assembly 5 close to the front longitudinal beam 33.

[0076] As an example, one end of the upper short beam 35 is connected to the front longitudinal beam front section 331 of the front longitudinal beam 33 by welding, and the other end of the upper short beam 35 is connected to the A-pillar assembly 5 near the front longitudinal beam 33, which can increase the connection relationship between the front longitudinal beam 33 and the A-pillar assembly 5, further improve the ability to offset the frontal collision force, thereby improving the collision performance of the vehicle body.

[0077] In one embodiment, referring to Figure 1 and Figure 5The upper short beam 35 includes a first connecting arm 351 arranged along the transverse direction of the vehicle body, a second connecting arm 352 extending from one end of the first connecting arm 351 along the first direction, and a third connecting arm 353 extending from one end of the second connecting arm 352 along the second direction; one end of the first connecting arm 351 away from the second connecting arm 352 is connected to the front longitudinal beam 33, and one end of the third connecting arm 353 away from the second connecting arm 352 is overlapped on the A-pillar assembly 5 at a position close to the front longitudinal beam 33.

[0078] As an example, the upper short beam 35 includes a first connecting arm 351, a second connecting arm 352 and a third connecting arm 353. The first connecting arm 351 is arranged transversely along the vehicle body, the second connecting arm 352 extends from one end of the first connecting arm 351 along the first direction, and the third connecting arm 353 extends from one end of the second connecting arm 352 along the second direction, wherein the first connecting arm 351 is arranged transversely along the vehicle body, the first direction forms a certain angle with the first connecting arm 351, and the second direction forms a certain angle with the first direction. The end of the first connecting arm 351 away from the second connecting arm 352 is connected to the front longitudinal beam 33, and the end of the third connecting arm 353 away from the second connecting arm 352 is overlapped on the A-pillar assembly 5 near the front longitudinal beam 33. This arrangement increases the connection relationship between the front longitudinal beam 33 and the A-pillar assembly 5, further improves the ability to offset the frontal collision force, thereby improving the vehicle body collision performance.

[0079] In one embodiment, referring to Figure 5 and Figure 6 The A-pillar assembly 5 includes an A-pillar inner panel 51, an A-pillar outer panel 52 and an A-pillar square tube 53; the A-pillar inner panel 51 is connected to the floor assembly 1, and the A-pillar outer panel 52 is overlapped on the A-pillar inner panel 51 to form an A-pillar support; the first end of the A-pillar square tube 53 is connected to the door sill beam 2, the second end of the A-pillar square tube 53 is connected to the A-pillar support, and the front anti-collision assembly 3 is tightly connected to the A-pillar square tube 53.

[0080] As an example, the A-pillar assembly 5 includes an A-pillar inner panel 51, an A-pillar outer panel 52 and an A-pillar square tube 53. The A-pillar outer panel 52 and the A-pillar inner panel 51 are connected with FDS to form an A-pillar support. The A-pillar support and the A-pillar outer panel 52 are connected with FDS. The front anti-collision assembly 3 is tightly connected with the A-pillar square tube 53. The rear section of the front longitudinal beam 333 and the A-pillar square tube 53 are connected with FDS. The first end of the A-pillar square tube 53 is connected with the sill beam 2. The rear section of the front longitudinal beam 333 and the sill beam 2 are welded. The A-pillar square tube 53 adopts an aluminum alloy square tube structure, and a connection is established between the rear section of the front longitudinal beam 333 and the sill beam 2, which greatly improves the lightweight level while meeting the strength requirements.

[0081] In one embodiment, referring to Figure 2 and Figure 7The B-pillar assembly 6 includes a B-pillar inner panel 61 and a B-pillar outer panel 62; both ends of the connecting beam assembly 7 are respectively connected to the B-pillar inner panel 61, and the B-pillar outer panel 62 is overlapped on the B-pillar inner panel 61 to form a B-pillar support; the lower end of the B-pillar support is connected to the door sill beam 2, and the rear end of the B-pillar support is connected to the rear anti-collision assembly 4.

[0082] As an example, the B-pillar assembly 6 includes a B-pillar inner plate 61 and a B-pillar outer plate 62, and the two ends of the connecting beam assembly 7 are respectively connected to the B-pillar inner plate 61, and the B-pillar outer plate 62 is overlapped on the B-pillar inner plate 61 to form a B-pillar support, which can reduce the deformation degree of the B-pillar assembly 6 in a side collision and ensure the structural robustness; wherein, the connecting beam assembly 7 and the B-pillar inner plate 61 are connected in the form of screw connection, and the connecting beam assembly 7 uses at least one crossbeam, which can strengthen the connection relationship between the B-pillar assemblies 6 on the left and right sides to avoid the B-pillar assembly from being deformed in the event of a collision. 6 invades the passenger compartment, the lower end of the B-pillar support is connected to the door sill beam 2, and the rear end of the B-pillar support is connected to the rear anti-collision assembly 4, which can decompose the side collision force to the rear anti-collision assembly 4 and the door sill beam 2, thereby improving the ability to offset the side collision force, thereby improving the collision performance of the vehicle body. The B-pillar inner plate 61 adopts a whole piece of aluminum to replace the steel of the traditional structure. Compared with the previous steel structure B-pillar assembly 6, the B-pillar assembly 6 in this example can avoid the problems of outer plate tearing, welding point tearing, etc. in the past, and its collision safety performance and lightweight level are better.

[0083] In one embodiment, referring to Figure 7 The B-pillar outer panel 62 includes a first column segment 621, a second column segment 622, a third column segment 623 and a fourth column segment 624 which are connected in sequence vertically along the vehicle body; one end of the first column segment 621 is connected to the door sill beam 2; the first column segment 621 and the second column segment 622 are made of square tube aluminum structure, the third column segment 623 is made of casting structure, and the fourth column segment 624 is made of aluminum structure.

[0084] As an example, the B-pillar outer panel 62 includes a first column section 621, a second column section 622, a third column section 623 and a fourth column section 624 which are connected in sequence along the vertical direction of the vehicle body; the first column section 621 is connected to the door sill beam 2 by bolts or welding, and the fourth column section 624 is connected to the vehicle body cover 8; the first column section 621 and the second column section 622 are made of square tube aluminum structure, which is a side collision induced bending deformation area. Compared with aluminum structures of other shapes, firstly, a tight connection is established with the door sill beam 2 to prevent the B-pillar outer panel 62 from losing contact with the door sill beam 2 during a collision and avoiding structural instability; secondly, combined with the force of the B-pillar outer panel 62 in a side collision, it can effectively offset the collision force; the third column section 623 is made of a casting structure with a certain strength to ensure the stability of the side collision and the survival space of the occupants in the vehicle is not easily deformed; the fourth column section 624 is made of an aluminum structure, and the deformation under force can provide buffer protection for the third column section 623, effectively reduce the collision force, and avoid the third column section 623 from being damaged and bent and invading the passenger compartment. The B-pillar outer panel 62 in this example has a novel structure, which avoids problems such as outer panel tearing and welding point tearing, and has better collision safety performance and lightweight level.

[0085] In one embodiment, referring to Figure 2 , Figure 3 and Figure 7 The rear anti-collision assembly 4 includes a rear longitudinal beam 41, a rear anti-collision beam 42, a rear longitudinal beam sealing plate 43, a first connecting beam 44, a rear tower seat 45 and a second connecting beam 46; the first end of the rear longitudinal beam 41 is connected to the door sill beam 2, and the second end of the rear longitudinal beam 41 is connected to the rear anti-collision beam 42; the rear longitudinal beam sealing plate 43 is overlapped on the part of the rear longitudinal beam 41 close to the door sill beam 2, one end of the first connecting beam 44 is connected to the rear longitudinal beam sealing plate 43, and the second end of the first connecting beam 44 is connected to the B-pillar assembly 6; the rear tower seat 45 is installed on the rear longitudinal beam 41, the first end of the second connecting beam 46 is connected to the rear tower seat 45, and the second end of the second connecting beam 46 is connected to the B-pillar assembly 6.

[0086] As an example, the rear anti-collision assembly 4 includes a rear longitudinal beam 41, a rear anti-collision beam 42, a rear longitudinal beam sealing plate 43, a first connecting beam 44, a rear tower seat 45 and a second connecting beam 46. The first end of the rear longitudinal beam 41 is connected to the door sill beam 2, and the second end of the rear longitudinal beam 41 is connected to the rear anti-collision beam 42. The rear longitudinal beam 41 and the rear anti-collision beam 42 are connected by welding to ensure the reliability of the structural connection. When the vehicle collides from behind, the collision force is transmitted to the rear longitudinal beam 41 through the rear anti-collision beam 42, and then transmitted to the door sill beam 2 through the rear longitudinal beam 41, so that the collision force can be transmitted to the door sill beam 2, thereby preventing the rear anti-collision assembly 4 from invading the passenger compartment and ensuring the stability of the passenger compartment; the rear longitudinal beam sealing plate 43 is overlapped on the rear longitudinal beam 41 near the rear longitudinal beam 41 On the part near the door sill beam 2, the strength of the rear longitudinal beam 41 can be improved to ensure that the rear longitudinal beam 41 can better resist collision; one end of the first connecting beam 44 is connected to the rear longitudinal beam cover plate 43, and the second end of the first connecting beam 44 is connected to the B-pillar assembly 6, and a force transmission path is formed between the rear longitudinal beam cover plate 43 and the B-pillar assembly 6 through the first connecting beam 44; the rear tower seat 45 is installed on the rear longitudinal beam 41, the first end of the second connecting beam 46 is connected to the rear tower seat 45, and the second end of the second connecting beam 46 is connected to the B-pillar assembly 6, and a force transmission path is formed between the rear tower seat 45 and the B-pillar assembly 6 through the second connecting beam 46, which can further decompose the collision force on the rear longitudinal beam 41 to the B-pillar assembly 6, thereby improving the rear collision performance of the rear anti-collision assembly 4.

[0087] In one embodiment, referring to Figure 2 , Figure 3 and Figure 7 The rear longitudinal beam 41 includes a front longitudinal beam section 411, a middle longitudinal beam section 412 and a rear longitudinal beam section 413 which are connected in sequence; one end of the front longitudinal beam section 411 is connected to the door sill beam 2, and the other end of the front longitudinal beam section 411 is integrally formed with the middle longitudinal beam section 412 to form an arc-shaped casting, with the arc opening of the arc-shaped casting facing the outside of the vehicle; one end of the rear longitudinal beam section 413 is connected to the rear anti-collision beam 42, and the rear longitudinal beam section 413 is made of aluminum alloy structure.

[0088] As an example, the rear longitudinal beam 41 includes a front section 411, a middle section 412 and a rear section 413; one end of the rear section 413 is connected to the rear anti-collision beam 42, and the rear section 413 is made of aluminum alloy. When a rear collision occurs, the rear anti-collision beam 42 and the rear section 413 are crushed and deformed. The other end of the front section 411 of the rear longitudinal beam is integrally formed with the middle section 412 of the rear longitudinal beam to form an arc-shaped casting. The arc mouth of the arc-shaped casting faces the outside of the vehicle, so that an arc-shaped force transmission path is formed on the rear longitudinal beam 41, which can ensure structural stability during a collision. The arc-shaped casting also includes a rear wheel bag integrally formed with it. This arrangement can reduce the number of molds and welding points. Finally, one end of the front section 411 of the rear longitudinal beam is connected to the door sill beam 2, and the collision force is transmitted to the door sill beam 2, so that all the collision forces can be transmitted to the door sill beam 2, thereby preventing the rear longitudinal beam 41 from invading the passenger compartment and ensuring the stability of the passenger compartment.

[0089] In one embodiment, referring to Figure 2 , Figure 3 and Figure 7 A connecting frame 9 is provided on the rear anti-collision beam 42; the rear longitudinal beam 41 also includes a first support beam 414, a second support beam 415 and a third support beam 416; the first end of the first support beam 414 is connected to the B-pillar assembly 6, and the second end of the first support beam 414 is connected to the rear tower seat 45; the first end of the second support beam 415 is connected to the rear tower seat 45, and the second end of the second support beam 415 is connected to the connecting frame 9; the first end of the third support beam 416 is connected to the rear section 413 of the rear longitudinal beam, and the second end of the third support beam 416 is connected to the second support beam 415.

[0090] As an example, the rear longitudinal beam 41 also includes a first support beam 414, a second support beam 415 and a third support beam 416. The B-pillar assembly 6 is connected to the rear tower seat 45 through the first support beam 414, and the connecting frame 9 set on the rear anti-collision beam 42 is connected to the rear tower seat 45 through the second support beam 415. This arrangement can form another force transmission path between the rear anti-collision beam 42 and the B-pillar assembly 6, further improving the rear collision performance of the rear anti-collision assembly 4; the rear section 413 of the rear longitudinal beam is connected to the second support beam 415 through the third support beam 416, so that the upper and lower force transmission paths of the rear anti-collision assembly 4 can be connected in parallel to form a closed-loop force transmission path, with better force transmission effect, which can greatly improve the rear collision performance, meet the collision safety performance of the new energy devices on the rear floor 12 of the vehicle, and provide optimization ideas for improving the rear collision performance of fuel vehicles.

[0091] An embodiment of the present invention provides an automobile, including a vehicle body structure.

[0092] As an example, the floor assembly 1, the door sill beam 2, the front anti-collision assembly 3, the rear anti-collision assembly 4, the A-pillar assembly 5, the B-pillar assembly 6 and the connecting beam assembly 7 are all made of aluminum, which is suitable for the development of pure electric vehicles or hybrid vehicle platforms with aluminum body structures, and can well make up for the shortcomings and difficulties of pure steel bodies and steel-aluminum hybrid body structures, and achieve maximum lightweighting. When a side collision occurs, the existing body structure is prone to the phenomenon that the welding points between the A-pillar assembly 5 and the door sill beam 2 and the welding points between the B-pillar assembly 6 and the door sill beam 2 are pulled apart. The body structure cannot meet the increasingly increasing requirements for collision safety performance of new energy vehicles. In this example, a door sill beam 2 is connected to each side of the floor assembly 1 to form a supporting base, the front end of the floor assembly 1 is provided with a front anti-collision assembly 3, and the rear end of the floor assembly 1 is provided with a rear anti-collision assembly 4; the lower end of the A-pillar assembly 5 overlaps the front end of the door sill beam 2, and the A-pillar assembly 5 overlaps the front anti-collision assembly 3 to form a frontal collision force transmission path. When a frontal collision occurs, the collision force is first offset by the front anti-collision assembly 3, and then transmitted to the A-pillar assembly 5, and then transmitted to the door sill beam 2 after being offset by the A-pillar assembly 5. This arrangement can effectively prevent the frontal collision force from being transmitted to the position of the floor assembly 1, ensuring The stability of the front passenger compartment and the reduction of occupant injuries; the lower end of the B-pillar assembly 6 overlaps the rear end of the door sill beam 2, and the B-pillar assembly 6 overlaps the rear anti-collision assembly 4 to form a rear collision force transmission path. When a rear collision occurs, the collision force is first offset by the rear anti-collision assembly 4, and then transmitted to the B-pillar assembly 6, and then offset by the B-pillar assembly 6 to the door sill beam 2. This arrangement can effectively prevent the rear collision force from being transmitted to the position of the floor assembly 1, thereby ensuring the stability of the front passenger compartment and reducing occupant injuries; the two ends of the connecting beam assembly 7 are respectively overlapped with the two B-pillar assemblies 6 to form a side collision force transmission path. When a side collision occurs, the collision force acts on the door sill beam 2 and the two B-pillar assemblies 6, and the two ends of the connecting beam assembly 7 are respectively overlapped with the two B-pillar assemblies 6, which can greatly reduce the deformation of the B-pillar assembly 6 in a side collision and ensure the structural stability.

[0093] The body structure in this example is made of aluminum material with a novel structure, which can significantly reduce the weight of the electric vehicle body. At the same time, the design of the front collision force transmission path, the rear collision force transmission path and the side collision force transmission path ensures that the comprehensive collision performance of the body structure meets the body stiffness, NVH and collision safety performance. Compared with the steel body structure, the weight of the whole vehicle is greatly reduced and the overall performance of the vehicle is greatly improved.

[0094] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle body structure, characterized in that: Including aluminum floor assembly, door sill beam, front anti-collision assembly, rear anti-collision assembly, A-pillar assembly, B-pillar assembly and connecting beam assembly; The two sides of the floor assembly are respectively connected to a threshold beam, the front end of the floor assembly is provided with the front anti-collision assembly, and the rear end of the floor assembly is provided with the rear anti-collision assembly; The lower end of the A-pillar assembly overlaps with the front end of the door sill beam, and the A-pillar assembly overlaps with the front anti-collision assembly to form a frontal collision force transmission path; The lower end of the B-pillar assembly overlaps with the rear end of the door sill beam, and the B-pillar assembly overlaps with the rear anti-collision assembly to form a rear collision force transmission path; The two ends of the connecting beam assembly are respectively overlapped with the two B-pillar assemblies to form a side collision force transmission path.

2. The vehicle body structure according to claim 1, characterized in that: The vehicle body structure also includes a vehicle body covering part, which is overlapped on the A-pillar assembly and the B-pillar assembly, and the vehicle body covering part is made of carbon fiber composite material.

3. The vehicle body structure according to claim 1, characterized in that: The floor assembly includes a front floor, a rear floor, a front wall panel cross beam casting and a front wall panel lower cross beam; The front end of the front floor is connected to the lower cross beam of the front wall panel, the lower cross beam of the front wall panel is provided with the front cross beam casting, and the lower cross beam of the front wall panel is provided with the front anti-collision assembly; The rear end of the front floor is connected to the front end of the rear floor, and the rear end of the rear floor is provided with the rear anti-collision assembly; The two sides of the front floor and the rear floor are respectively connected to a threshold beam.

4. The vehicle body structure according to claim 1, characterized in that: The front anti-collision assembly includes a front anti-collision beam assembly, an energy absorption box, a front longitudinal beam and a front tower seat; The two ends of the front anti-collision beam assembly are respectively connected to an energy absorption box, the rear end of the energy absorption box is connected to the front end of the front longitudinal beam, and the rear end of the front longitudinal beam overlaps the floor assembly and the A-pillar assembly; A first portion of the front tower seat is overlapped on the front longitudinal beam, and a second portion of the front tower seat is overlapped on the A-pillar assembly.

5. The vehicle body structure according to claim 4, characterized in that: The front longitudinal beam comprises a front longitudinal beam front section, a front longitudinal beam middle section and a front longitudinal beam rear section which are connected in sequence; The front end of the front longitudinal beam front section is connected to the rear end of the energy absorption box, and the front longitudinal beam front section is an aluminum alloy structure; The middle section of the front longitudinal beam overlaps with the first part of the front tower seat, and the middle section of the front longitudinal beam is a low-pressure casting structure; The rear section of the front longitudinal beam is overlapped with the floor assembly and the A-pillar assembly, and the rear section of the front longitudinal beam is a high-pressure casting structure.

6. The vehicle body structure according to claim 5, characterized in that: The rear section of the front longitudinal beam is provided with a plurality of convex ribs arranged in the transverse direction of the vehicle body.

7. The vehicle body structure according to claim 4, characterized in that: The front anti-collision assembly also includes an upper short beam, one end of which is connected to the front longitudinal beam, and the other end of which is connected to a position on the A-pillar assembly close to the front longitudinal beam.

8. The vehicle body structure according to claim 7, characterized in that: The upper short beam comprises a first connecting arm arranged in the transverse direction of the vehicle body, a second connecting arm extending from one end of the first connecting arm in a first direction, and a third connecting arm extending from one end of the second connecting arm in a second direction; One end of the first connecting arm away from the second connecting arm is connected to the front longitudinal beam, and one end of the third connecting arm away from the second connecting arm is overlapped at a position on the A-pillar assembly close to the front longitudinal beam.

9. The vehicle body structure according to claim 1, characterized in that: The A-pillar assembly includes an A-pillar inner plate, an A-pillar outer plate and an A-pillar square tube; The A-pillar inner panel is connected to the floor assembly, and the A-pillar outer panel is overlapped on the A-pillar inner panel to form an A-pillar support; The first end of the A-pillar square tube is connected to the door sill beam, the second end of the A-pillar square tube is connected to the A-pillar support, and the front anti-collision assembly is tightly connected to the A-pillar square tube.

10. The vehicle body structure according to claim 1, characterized in that: The B-pillar assembly includes a B-pillar inner panel and a B-pillar outer panel; The two ends of the connecting beam assembly are respectively connected to the B-pillar inner plate, and the B-pillar outer plate is overlapped on the B-pillar inner plate to form a B-pillar support; The lower end of the B-pillar support is connected to the door sill beam, and the rear end of the B-pillar support is connected to the rear anti-collision assembly.

11. The vehicle body structure according to claim 10, characterized in that: The B-pillar outer panel comprises a first column section, a second column section, a third column section and a fourth column section which are connected in sequence vertically along the vehicle body; One end of the first column section is connected to the threshold beam; The first column segment and the second column segment are made of square tube aluminum structure, the third column segment is made of casting structure, and the fourth column segment is made of aluminum structure.

12. The vehicle body structure according to claim 1, characterized in that: The rear anti-collision assembly includes a rear longitudinal beam, a rear anti-collision beam, a rear longitudinal beam cover plate, a first connecting beam, a rear tower seat and a second connecting beam; The first end of the rear longitudinal beam is connected to the door sill beam, and the second end of the rear longitudinal beam is connected to the rear anti-collision beam; The rear longitudinal beam cover plate is overlapped on a portion of the rear longitudinal beam close to the door sill beam, one end of the first connecting beam is connected to the rear longitudinal beam cover plate, and a second end of the first connecting beam is connected to the B-pillar assembly; The rear tower seat is installed on the rear longitudinal beam, the first end of the second connecting beam is connected to the rear tower seat, and the second end of the second connecting beam is connected to the B-pillar assembly.

13. The vehicle body structure according to claim 12, characterized in that: The rear longitudinal beam comprises a rear longitudinal beam front section, a rear longitudinal beam middle section and a rear longitudinal beam rear section which are connected in sequence; One end of the front section of the rear longitudinal beam is connected to the door sill beam, and the other end of the front section of the rear longitudinal beam is integrally formed with the middle section of the rear longitudinal beam to form an arc-shaped casting, and the arc opening of the arc-shaped casting faces outside the vehicle; One end of the rear section of the rear longitudinal beam is connected to the rear anti-collision beam, and the rear section of the rear longitudinal beam is made of an aluminum alloy structure.

14. The vehicle body structure according to claim 13, characterized in that: The rear anti-collision beam is provided with a connecting frame, and the rear longitudinal beam further comprises a first support beam, a second support beam and a third support beam; The first end of the first support beam is connected to the B-pillar assembly, and the second end of the first support beam is connected to the rear tower seat; The first end of the second support beam is connected to the rear tower seat, and the second end of the second support beam is connected to the connecting frame; The first end of the third support beam is connected to the rear section of the rear longitudinal beam, and the second end of the third support beam is connected to the second support beam.

15. A car, characterized in that: The vehicle body structure comprises any one of claims 1-14.

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