Vehicle body frame structure and vehicle

Abstract

The invention is suitable for the field of vehicles, and provides a vehicle body frame structure and a vehicle. The vehicle body frame structure comprises a front cabin; the rear floor and the front cabin are oppositely arranged in the first direction; the two first longitudinal beams are connected between the front cabin and the rear floor respectively, the two first longitudinal beams are arranged in a spaced mode in the second direction, and the second direction intersects with the first direction; at least one of the front cabin and the rear floor is an integrated die casting, and the front cabin, the two first longitudinal beams and the rear floor jointly define a frame used for installing a battery cover plate. According to the vehicle body frame structure provided by the embodiment of the invention, the number of vehicle body parts is reduced, the production process chain is shortened, and the manufacturing efficiency and the manufacturing quality are improved.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and in particular to a vehicle body frame structure and a vehicle. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. New energy vehicles have become an important part of the sustainable development of the automobile industry due to their energy-saving and environmental protection advantages.

[0003] At present, the lower body structure of new energy vehicles usually includes parts such as body frames and battery packs. During manufacturing, sheet metal parts are first welded to form a small assembly, then the small assembly is welded into the body frame, and then the battery pack is assembled to the body frame. However, this traditional car manufacturing process has a long manufacturing cycle, large cumulative manufacturing errors of assembly parts, and is difficult to adapt to the rapid iteration rhythm of new energy vehicles in terms of manufacturing efficiency and manufacturing quality. The body frame structure needs to be optimized and changed. Summary of the invention

[0004] In view of this, the present application provides a vehicle body frame structure and a vehicle to improve manufacturing efficiency and manufacturing quality.

[0005] The embodiment of the first aspect of the present application provides a vehicle body frame structure, comprising:

[0006] forward cabin;

[0007] a rear floor disposed opposite to the front cabin in a first direction;

[0008] Two first longitudinal beams are respectively connected between the front cabin and the rear floor, the two first longitudinal beams are spaced apart in a second direction, and the second direction intersects the first direction;

[0009] At least one of the front compartment and the rear floor is an integral die-casting, and the front compartment, the two first longitudinal beams and the rear floor together form a frame for mounting a battery cover.

[0010] The front cabin and / or rear floor in the body frame structure provided by the present application is an integrated die-cast structure, which reduces the number of body parts and welding processes, and solves the problem of large cumulative manufacturing errors of parts; at the same time, the front cabin integrates the front crossbeam of the traditional battery pack, and the rear floor integrates the rear crossbeam of the traditional battery pack. The front cabin, the rear floor and the two first longitudinal beams form a frame. During assembly, the battery cover can be directly fixed in the frame, and then the battery cell is installed in the space formed by the body frame structure and the battery cover, that is, the battery cell is assembled on the body frame structure through CTC technology, which further reduces the number of parts. Therefore, the above-mentioned body frame structure reduces the number of body parts, shortens the production process chain, and improves manufacturing efficiency and manufacturing quality.

[0011] In some embodiments, both ends of the first longitudinal beam are detachably connected to the front cabin and the rear floor respectively.

[0012] Since the first longitudinal beam is detachably connected to the front cabin and the rear floor, the first longitudinal beam is easy to install and remove. At the same time, when assembling the body frame structure, different lengths of the first longitudinal beam can be selected according to the wheelbase and / or battery space requirements. The die-cast front cabin and rear floor can adapt to a variety of different models, and can be shared by multiple platform models, reducing the overall vehicle manufacturing cost and realizing rapid iteration of models.

[0013] In some embodiments, the front cabin includes a front cross beam arranged toward one end of the rear floor, and the rear floor includes a rear cross beam arranged toward one end of the front cabin, and the front cross beam, the rear cross beam and the two first longitudinal beams form a frame structure.

[0014] By adopting the above technical solution, the front cabin integrates a front crossbeam for installing batteries, and the rear floor integrates a rear crossbeam for installing batteries, so that the front crossbeam, the rear crossbeam and the two first longitudinal beams form a rectangular frame structure, which provides installation space for the batteries, saves battery frames, and facilitates flexible arrangement of batteries.

[0015] In some embodiments, the front compartment also includes a front enclosure cross beam and two front longitudinal beams integrally formed with the front cross beam, the front cross beam is arranged at one end of the front enclosure cross beam facing the rear floor, the two front longitudinal beams are arranged at one end of the front enclosure cross beam away from the rear floor, and the two front longitudinal beams are spaced apart in the second direction.

[0016] The front cabin provided in the embodiment of the present application is manufactured by an integrated die-casting process, and the flexibility in the die-casting design is utilized to enable the front cabin to have the functions of a traditional assembled front cabin; the front cabin of the embodiment of the present application does not need to be manufactured by welding multiple parts, thereby improving the structural strength and simplifying the manufacturing process.

[0017] In some embodiments, the front compartment further includes two front torsion boxes, which are respectively arranged at the two ends of the front enclosure cross beam in the second direction, one end of the front torsion box is connected to the front longitudinal beam, and the other end is connected to the first longitudinal beam.

[0018] By providing the front torsion box, not only the structural strength of the front compartment can be improved, but also the transmission effect of the impact force of the front compartment in head-on collision or side collision can be improved, thereby improving the safety performance of the vehicle body frame structure.

[0019] In some embodiments, one end of the front torsion box is bent toward the inner side of the vehicle body frame structure and connected to the front longitudinal beam, and the other end of the front torsion box is connected to the first longitudinal beam.

[0020] In some embodiments, a first mounting hole is provided on the first longitudinal beam, and the first longitudinal beam is fixedly connected to the front torque box via a fastener passing through the first mounting hole.

[0021] By adopting the above technical solution, the first longitudinal beam can be detachably connected to the front torque box, the front torque box has a higher structural strength, and the first longitudinal beam can be stably connected to the front torque box.

[0022] In some embodiments, the first longitudinal beam includes a main body and a first part and a second part arranged on both sides of the main body along a second direction, one end of the main body is attached to the front torque box and the first mounting hole is arranged on the side of the main body, a second mounting hole is arranged on the top of the main body, and the second part extends toward the frame structure and is used to support the battery cover.

[0023] By adopting the above technical solution, the first longitudinal beam can be conveniently installed on the front cabin, and can also connect and support the battery cover, thereby improving the stability of the battery cover.

[0024] In some embodiments, the vehicle body frame structure further includes a front anti-collision beam, and two ends of the front anti-collision beam are respectively connected to the two front longitudinal beams.

[0025] By adopting the above technical solution, the front anti-collision beam and the integrated front cabin can absorb or transfer the energy of the front collision of the vehicle body to the entire vehicle body, thereby achieving a collision energy absorption effect and improving the safety of the vehicle.

[0026] In some embodiments, the rear floor also includes two rear longitudinal beams and a rear floor cross beam that are integrally formed with the rear cross beam, the rear floor cross beam and the rear cross beam are spaced apart and arranged opposite to each other in the first direction, the two rear longitudinal beams are spaced apart and arranged opposite to each other in the second direction, and the two ends of the rear longitudinal beam are respectively connected to the rear cross beam and the rear floor cross beam.

[0027] By adopting the above technical solution, the rear floor includes an integrally formed rear cross beam, rear longitudinal beam and rear floor cross beam, and the flexibility of the die-casting design is utilized to enable the rear floor to have the functions of a traditional assembled rear floor; the rear floor of the embodiment of the present application does not need to be manufactured by welding multiple parts, thereby improving the structural strength and simplifying the manufacturing process.

[0028] In some embodiments, the rear floor further includes two rear torsion boxes, which are respectively arranged at both ends of the rear cross beam in the second direction, one end of the rear torsion box is connected to the rear longitudinal beam, and the other end is connected to the first longitudinal beam.

[0029] By providing a rear torsion box, the structural strength of the rear floor is improved, and the effect of transmitting the impact force of the rear floor during a vehicle collision is improved, thereby improving the safety performance of the vehicle body frame structure.

[0030] In some embodiments, the vehicle body frame structure further includes a rear anti-collision beam connected to an end of the rear floor away from the front cabin.

[0031] By adopting the above technical solution, the rear anti-collision beam and the integrated rear floor can absorb or transfer the energy of the rear collision of the vehicle to the entire vehicle body, thereby achieving a collision energy absorption effect and improving the safety of the vehicle.

[0032] In some embodiments, the vehicle body frame structure also includes a reinforcing structure, which is arranged on at least one of the front cabin, the rear floor and the longitudinal beam, and the cross-sectional shape of the reinforcing structure includes at least one of a U-shape, an H-shape, an I-shape and an N-shape.

[0033] By providing a reinforcement structure, the structural strength and structural stability of the vehicle body frame structure are enhanced; the structure of the reinforcement structure can be flexibly manufactured using a die-casting process.

[0034] In some embodiments, the reinforcement structure includes a first reinforcement structure, the cross section of which includes at least two first reinforcement edges disposed at intervals and a first connecting edge connected to one end of two adjacent first reinforcement edges. The first reinforcement structure can improve the structural strength and torsional rigidity of the vehicle body frame structure.

[0035] In some embodiments, a front longitudinal beam is disposed at one end of the front cabin away from the rear floor, the first reinforcement structure is disposed on the front longitudinal beam, and / or

[0036] The first reinforcement structure is disposed on the rear floor.

[0037] By arranging the first reinforcement structure on the front longitudinal beam and / or the rear floor, the structural strength of the front longitudinal beam and / or the rear floor is improved. In addition, by arranging the first reinforcement structure on the front longitudinal beam, the integral die-cast front longitudinal beam can replace the traditional front longitudinal beam assembly.

[0038] In some embodiments, the reinforcement structure includes a second reinforcement structure, the cross section of the second reinforcement structure includes a first top edge and second reinforcement edges arranged at two ends of the top along the first direction, the second reinforcement edges include a first extension edge and a second extension edge, the first extension edge is parallel to or at an angle to the height direction of the vehicle body, and the second extension edge is parallel to or at an angle to the first direction. The second reinforcement structure can extend in the height direction and the first direction of the vehicle body at the same time, and can simultaneously improve the structural strength in the height direction and the length direction of the vehicle body.

[0039] In some embodiments, the second reinforcement structure is provided on the front cabin, and / or,

[0040] The second reinforcement structure is disposed on the rear floor.

[0041] By adopting the above technical solution, the second reinforcement structure is adapted to the structure of the front cabin and the rear floor, and the structural strength of the front cabin and / or the rear floor can be improved.

[0042] In some embodiments, the reinforcement structure includes a third reinforcement structure, and a cross-section of the third reinforcement structure includes at least two third reinforcement edges extending along the height direction of the vehicle body and a second connecting edge connected between two adjacent third reinforcement edges.

[0043] By adopting the above technical solution, the third reinforcement structure has a higher structural strength and can reduce the deformation probability of the part where it is located.

[0044] In some embodiments, the third reinforcement structure is disposed at an end of the front compartment close to the rear floor.

[0045] By providing the third reinforcement structure, the structural strength of the front cabin is improved.

[0046] In some embodiments, a reinforcing rib structure is provided on the front cabin and / or the rear floor, and the reinforcing rib structure includes a first reinforcing rib and a second reinforcing rib, and the extension directions of the first reinforcing rib and the second reinforcing rib intersect.

[0047] By providing a reinforcing rib structure, and cross-disposing the first reinforcing rib and the second reinforcing rib, the structural strength and bending-torsional rigidity of the front cabin and / or the rear floor can be improved, and the energy transmission and absorption functions during vehicle body collision can be achieved.

[0048] An embodiment of the second aspect of the present application provides a vehicle, comprising a vehicle body frame structure as described in the first aspect.

[0049] The vehicle provided in the embodiment of the present application includes the above-mentioned vehicle body frame structure, which can also improve manufacturing efficiency and manufacturing quality.

[0050] In some embodiments, the vehicle further includes a battery, the battery including a battery cover and a plurality of battery cells, the battery cover is disposed in the frame and connected to the vehicle body frame structure, and a plurality of the battery cells are connected to the battery cover.

[0051] By adopting the above technical solution, the vehicle uses CTC technology to install batteries, shortening the assembly process chain of CTC technology.

[0052] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or conventional technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0054] Figure 1 is a structural schematic diagram of a vehicle body frame structure provided by an embodiment of the present application;

[0055] Figure 2 yes Figure 1 The body frame structure shown is a three-dimensional exploded view after the front and rear anti-collision beams are removed;

[0056] Figure 3 yes Figure 2 A top view of the vehicle body frame structure shown;

[0057] Figure 4 yes Figure 2 A bottom view of the vehicle body frame structure shown;

[0058] Figure 5 yes Figure 2 A three-dimensional schematic diagram of a first longitudinal beam in the vehicle body frame structure shown;

[0059] Figure 6 yes Figure 3 The cross-sectional view of the vehicle body frame structure along the AA line is shown;

[0060] Figure 7 yes Figure 3 The cross-sectional view of the vehicle body frame structure along line BB is shown;

[0061] Figure 8 yes Figure 3 The cross-sectional view of the vehicle body frame structure along the CC line is shown;

[0062] Fig. 9 It is a schematic diagram of the assembly of a vehicle body frame structure and a battery cover provided by an embodiment of the present application;

[0063] Fig.10 yes Fig. 9 A side view of the vehicle body frame structure and the battery cover shown;

[0064] Fig.11 yes Fig. 9 One of the force diagrams of the vehicle frame structure after a collision is shown;

[0065] Fig.12 yes Fig. 9 The second schematic diagram of the force on the vehicle frame structure after a collision is shown.

[0066] The meanings of the marks in the figure are:

[0067] 100. Vehicle frame structure; 200. Battery cover;

[0068] 10. Front cabin; 11. Front crossbeam; 12. Front wall crossbeam; 13. Front longitudinal beam; 14. Front torque box;

[0069] 20. Rear floor; 21. Rear cross beam; 22. Rear longitudinal beam; 221. Mounting seat; 23. Rear floor cross beam; 24. Rear torsion box;

[0070] 30. first longitudinal beam; 31. main body; 311. first mounting hole; 32. first part; 33. second part;

[0071] 40. front anti-collision beam; 50. rear anti-collision beam; 60. reinforcing rib structure; 61. first reinforcing rib; 62. second reinforcing rib;

[0072] 70. reinforcement structure; 71. first reinforcement structure; 711. first reinforcement edge; 712. first connecting edge; 72. second reinforcement structure; 721. first top edge; 722. second reinforcement edge; 7221. first extension edge; 7222. second extension edge; 73. third reinforcement structure; 731. third reinforcement edge; 732. second connecting edge. DETAILED DESCRIPTION

[0073] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0074] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0075] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0076] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0077] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0078] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0079] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0080] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0081] In the present application, battery cells may include lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells or magnesium-ion battery cells, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0082] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0083] The technical solution described in the embodiments of the present application is applicable to vehicles, which may be fuel vehicles, gas vehicles or new energy vehicles. The new energy vehicles may be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned vehicles.

[0084] In this application, CTC (Cell to Chassis) technology is a process in which battery cells are directly integrated into the vehicle chassis.

[0085] At present, the lower body structure of new energy vehicles usually includes parts such as body frames and battery packs. During manufacturing, sheet metal parts are first welded to form a small assembly, then the small assembly is welded into the body frame, and then the battery pack is assembled to the body frame. However, this traditional car manufacturing process has a long manufacturing cycle, large cumulative manufacturing errors of assembly parts, and is difficult to adapt to the rapid iteration rhythm of new energy vehicles in terms of manufacturing efficiency and manufacturing quality. The body frame structure needs to be optimized and changed.

[0086] In view of this, the present application designs a body frame structure and a vehicle, wherein the body frame structure includes a front cabin, a rear floor and two first longitudinal beams; the rear floor and the front cabin are arranged opposite to each other in a first direction, the two first longitudinal beams are respectively connected between the front cabin and the rear floor, and the two first longitudinal beams are arranged at intervals in a second direction, and the second direction intersects with the first direction; at least one of the front cabin and the rear floor is an integral die-casting, and the front cabin, the two first longitudinal beams and the rear floor together form a frame structure for installing a battery cover.

[0087] The front cabin and / or rear floor in the body frame structure provided by the present application is an integrated die-cast structure, which reduces the number of body parts and welding processes, and solves the problem of large cumulative manufacturing errors of parts; at the same time, the front cabin integrates the front crossbeam of the traditional battery pack, and the rear floor integrates the rear crossbeam of the traditional battery pack. The front cabin, the rear floor and the two first longitudinal beams form a frame structure. During assembly, the battery cover plate can be directly fixed in the frame structure, and then the battery cell is installed in the space formed by the body frame structure and the battery cover plate, that is, the battery cell is assembled on the body frame structure through CTC technology, which further reduces the number of parts. Therefore, the above-mentioned body frame structure reduces the number of body parts, shortens the production process chain, and improves manufacturing efficiency and manufacturing quality.

[0088] The first embodiment of the present application provides a vehicle frame structure. Figure 1 The vehicle body frame structure 100 includes a front cabin 10, a rear floor 20 and two first longitudinal beams 30; the rear floor 20 and the front cabin 10 are arranged opposite to each other in a first direction X, the two first longitudinal beams 30 are respectively connected between the front cabin 10 and the rear floor 20, and the two first longitudinal beams 30 are spaced apart in a second direction Y, and the second direction Y intersects with the first direction X; at least one of the front cabin 10 and the rear floor 20 is an integral die-casting, and the front cabin 10, the two first longitudinal beams 30 and the rear floor 20 together form a frame for installing a battery cover.

[0089] Please refer to Figures 1 to 4 , the front cabin 10 can carry various parts in the front cabin, and the rear floor 20 is the floor part of the rear part of the passenger cabin. The front cabin 10 and the rear floor 20 also play the role of absorbing energy, transferring energy, and providing sufficient rigidity for the vehicle body frame in a collision. The front cabin 10 and the rear floor 20 are arranged relative to each other in a first direction X, and the first direction X can be the longitudinal direction of the vehicle body. Among them, at least one of the front cabin 10 and the rear floor 20 is an integral die-casting, that is, the front cabin 10 and / or the rear floor 20 is an integral structure made by an integral die-casting process. Optionally, the front cabin 10 and the rear floor 20 are both integral die-castings, which greatly reduces the number of parts and reduces the assembly process. The material of the front cabin 10 and the rear floor 20 may include aluminum, steel or other metal materials.

[0090] The two first longitudinal beams 30 are arranged at intervals in the second direction Y, and the two first longitudinal beams 30 are divided into a left longitudinal beam and a right longitudinal beam as the vehicle body. The second direction Y can be the lateral direction of the vehicle body, and it can be understood that the second direction Y can also be arranged obliquely compared to the lateral direction of the vehicle body. The first longitudinal beam 30 can be an integral structure with good structural strength; the material of the first longitudinal beam 30 can include aluminum, steel or other metal materials.

[0091] The two ends of the first longitudinal beam 30 can be connected to the front cabin 10 and the rear floor 20 by fastener connection, welding, etc. The front cabin 10, the two first longitudinal beams 30 and the rear floor 20 together form a frame for installing the battery cover. The frame is a hollow structure, and the storage space in the middle of the frame can be used to install the battery cover. The structure of the front cabin 10 integrates the front cross beam 11 of the battery, and the structure of the rear floor 20 integrates the rear cross beam 21 of the battery. The two first longitudinal beams 30 serve as the left and right longitudinal beams of the battery respectively. In this way, the front cabin 10, the rear floor 20 and the two first longitudinal beams 30 can fix the battery cover together.

[0092] During assembly, at least one of the front cabin 10 and the rear floor 20 is an integral die-casting, and the two first longitudinal beams 30 are connected between the front cabin 10 and the rear floor 20, so that the front cabin 10, the rear floor 20 and the two first longitudinal beams 30 form a frame, that is, the vehicle body frame structure is assembled; then, the battery cover is fixed in the frame, and the battery cell is fixedly connected to the battery cover, and the battery assembly is completed. There can be multiple battery cells, and the multiple battery cells can be connected in series, in parallel, or in mixed connection. Mixed connection means that multiple battery cells are both in series and in parallel. The battery can also include other structures. For example, the battery can also include a confluence component for realizing electrical connection between multiple battery cells. Among them, each battery cell can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but it is not limited thereto. The battery cell can be cylindrical, flat, rectangular, or in other shapes.

[0093] The front compartment 10 and / or the rear floor 20 in the vehicle frame structure 100 provided in the present application are an integrated die-cast structure, which reduces the number of vehicle body parts and welding processes, and solves the problem of large cumulative manufacturing errors of parts; at the same time, the front compartment 10 integrates the front cross beam 11 of the traditional battery pack, and the rear floor 20 integrates the rear cross beam 21 of the traditional battery pack. The front compartment 10, the rear floor 20 and the two first longitudinal beams 30 form a frame. During assembly, the battery cover plate can be directly fixed in the frame, and then the battery monomer is installed in the space formed by the vehicle frame structure 100 and the battery cover plate, that is, the battery monomer is assembled on the vehicle frame structure 100 through the CTC technology, which further reduces the number of parts. Therefore, the above-mentioned vehicle frame structure 100 reduces the number of vehicle body parts, shortens the production process chain, and improves manufacturing efficiency and manufacturing quality.

[0094] In some embodiments, both ends of the first longitudinal beam 30 are detachably connected to the front cabin 10 and the rear floor 20 , respectively.

[0095] The two ends of the first longitudinal beam 30 can be detachably connected to the front cabin 10 and the rear floor 20 by bolt connection or the like. Optionally, the two ends of the first longitudinal beam 30 can be connected to the front cabin 10 and the rear floor 20 by automatic bolt tightening technology (Flow Drill Screw, FDS). FDS is also known as flow drill screw technology, and its principle is to use the heat generated by the high-speed rotation of the screw to melt the parent material, increase the pressure to penetrate the parent material and make threads on the parent material, so that two or more layers of sheet materials are fixed together.

[0096] Since the first longitudinal beam 30 is detachably connected to the front cabin 10 and the rear floor 20, the first longitudinal beam 30 is easy to install and remove. At the same time, when assembling the vehicle frame structure 100, different lengths of the first longitudinal beam 30 can be selected according to the wheelbase and / or battery space requirements. The die-casting front cabin 10 and the rear floor 20 can adapt to a variety of different vehicle models, and can be shared by multiple platform models, reducing the overall vehicle manufacturing cost and realizing rapid iteration of vehicle models.

[0097] In some embodiments, the front cabin 10 includes a front cross beam 11 disposed toward one end of the rear floor 20, and the rear floor 20 includes a rear cross beam 21 disposed toward one end of the front cabin 10. The front cross beam 11, the rear cross beam 21 and the two first longitudinal beams 30 form a frame structure.

[0098] The front cross beam 11 may be strip-shaped and extend along the second direction Y; the end of the rear cross beam 21 close to the front cabin 10 may be strip-shaped and extend along the second direction Y. It is understandable that the front cross beam 11 may also be other shapes. In some embodiments, the front cabin 10 and the rear floor 20 are both integral die-castings, the front cross beam 11 is provided at the end of the front cabin 10 close to the rear floor 20, and the rear cross beam 21 is provided at the end of the rear floor 20 close to the front cabin 10. The front cross beam 11, the rear cross beam 21 and the two first longitudinal beams 30 form a rectangular frame structure, which is compatible with the shape and size of the battery cover plate to facilitate the installation of the battery cover plate. It is understandable that the frame structure may also be other shapes other than rectangular, such as circular.

[0099] By adopting the above technical solution, the front cabin 10 integrates a front cross beam 11 for installing batteries, and the rear floor 20 integrates a rear cross beam 21 for installing batteries, so that the front cross beam 11, the rear cross beam 21 and the two first longitudinal beams 30 form a frame structure, which provides installation space for the batteries, saves battery frames, and facilitates flexible arrangement of batteries.

[0100] In some embodiments, the front cabin 10 also includes a front cross beam 12 and two front longitudinal beams 13 integrally formed with the front cross beam 11, the front cross beam 11 is arranged at one end facing the rear floor 20 relative to the front cross beam 12, the two front longitudinal beams 13 are arranged at one end away from the rear floor 20 relative to the front cross beam 12, and the two front longitudinal beams 13 are spaced apart in the second direction.

[0101] The dash cross beam 12 can support the vehicle body. The shape of the dash cross beam 12 is set according to the requirements of the vehicle body. The width of the dash cross beam 12 in the first direction X can be greater than the width of the front cross beam 11 .

[0102] The front longitudinal beam 13 can extend along the length direction of the vehicle body. The two front longitudinal beams 13 can play a major role in receiving force and absorbing energy when the vehicle collides.

[0103] The front cabin 10 provided in the embodiment of the present application includes an integrally formed front panel cross beam 12, a front cross beam 11 and two front longitudinal beams 13. The front cabin 10 is manufactured by an integrated die-casting process. The flexibility in the die-casting design enables the front cabin 10 to have the functions of a traditional assembled front cabin 10. The front cabin 10 in the embodiment of the present application does not need to be manufactured by welding multiple parts, which improves the structural strength and simplifies the manufacturing process.

[0104] In some embodiments, the front compartment 10 further includes two front torque boxes 14 , which are respectively disposed at two ends of the front enclosure cross beam 12 in the second direction Y, one end of the front torque box 14 is connected to the front longitudinal beam 13 , and the other end is connected to the first longitudinal beam 30 .

[0105] The torque box is a key force transmission area in the vehicle body, and serves to connect the beam body and / or other parts. The front torque box 14 is a part of the integral die-cast front cabin 10. The front torque box 14 is used to connect the front longitudinal beam 13 and the first longitudinal beam 30, and can achieve relative fixation between the front longitudinal beam 13 and the first longitudinal beam 30, and ensure the continuity of force transmission between the two. The height of the front longitudinal beam 13 can be higher than the height of the first longitudinal beam 30. The front torque box 14 extends along the first direction X and the height direction of the vehicle body at the same time to connect the front longitudinal beam 13 and the first longitudinal beam 30. Optionally, in order to enhance the structural strength and energy absorption effect of the front torque box 14, reinforcing ribs can be provided on the front torque box 14.

[0106] By providing the front torsion box 14, not only the structural strength of the front compartment 10 can be improved, but also the transmission effect of the impact force of the front compartment 10 in head-on or side collisions can be improved, thereby improving the safety performance of the vehicle frame structure; at the same time, the collision energy can be absorbed by the deformation energy absorption of the reinforcing ribs during a collision, thereby reducing the impact and damage to other parts of the vehicle body caused by the collision.

[0107] Please refer to Fig.11 In some embodiments, one end of the front torque box 14 is bent toward the inner side of the vehicle body frame structure 100 and connected to the front longitudinal beam 13 , and the other end of the front torque box 14 is connected to the first longitudinal beam 30 .

[0108] The distance between the two front longitudinal beams 13 is smaller than the distance between the two first longitudinal beams 30, and the front torque box 14 is connected between the front longitudinal beam 13 and the first longitudinal beam 30. Therefore, the front torque box 14 bends and extends from the end connected to the first longitudinal beam 30 toward the inner side of the vehicle body frame structure. When the front part of the vehicle body is hit, energy enters the front longitudinal beam 13 from the front anti-collision beam 40, and the energy is decomposed by the front torque box 14 and transmitted to the front wall cross beam 12 and the first longitudinal beam 30 respectively. By adopting the above technical solution, the front torque box 14 can play a role in transmitting force, improve the transmission effect of the impact force of the front cabin 10 in the case of head-on collision or side collision, and improve the safety performance of the vehicle body frame structure 100.

[0109] Please refer to Figure 2 and Figure 5 In some embodiments, a first mounting hole 311 is provided on the first longitudinal beam 30 , and the first longitudinal beam 30 is fixedly connected to the front torque box 14 via a fastener (not shown) passing through the first mounting hole 311 .

[0110] The number of the first mounting holes 311 can be one or more. It can be understood that in order to insert fasteners, the first longitudinal beam 30 is also provided with mounting holes corresponding to the first mounting holes 311; the fasteners are, for example, bolts. One end of the first longitudinal beam 30 is attached to the front torque box 14, and optionally, the end of the first longitudinal beam 30 can be accommodated in the front torque box 14.

[0111] By adopting the above technical solution, the first longitudinal beam 30 can be detachably connected to the front torque box 14 , the front torque box 14 has a high structural strength, and the first longitudinal beam 30 can be stably connected to the front torque box 14 .

[0112] In other embodiments, the first longitudinal beam 30 may also be welded to the front torque box 14 ; in other embodiments, the first longitudinal beam 30 may also be connected to other parts of the front cabin 10 .

[0113] In some embodiments, the first longitudinal beam 30 includes a main body 31 and a first portion 32 and a second portion 33 arranged on both sides of the main body 31 along the second direction, one end of the main body 31 is attached to the front torque box 14 and the first mounting hole 311 is arranged on the side of the main body 31, a second mounting hole is arranged on the top of the main body 31, and the second portion 33 extends toward the frame and is used to support the battery cover.

[0114] The main body 31, the first part 32 and the second part 33 all extend along the first direction X, and the first longitudinal beam 30 is an integrally formed structure. The first part 32 is arranged on the side of the main body 31 away from the frame, and the second part 33 extends toward the inside of the frame and is used to support the battery cover.

[0115] The length of the main body 31 may be greater than the length of the second part 33. The first mounting hole 311 is provided on the side of the main body 31, wherein the side of the main body 31 refers to the side wall of the main body 31 facing the second part 33. Since the length of the main body 31 is greater than the length of the second part 33, the second part 33 can avoid the first mounting hole 311. When installing the first longitudinal beam 30, the main body 31 is attached to the front torque box 14, and the bolts are passed through the front torque box 14 and the first mounting hole 311 from the outside to the inside, so as to fix the first longitudinal beam 30 to the front torque box 14.

[0116] A second mounting hole is provided at the top of the main body 31. The top of the main body 31 refers to the top of the main body 31 along the height direction of the vehicle body. The second mounting hole can be used to connect to the vehicle body or other parts. A mounting hole can also be provided on the first part 32 to facilitate connection to the vehicle body or other parts. During assembly, the battery cover can be connected to the main body 31 and / or the second part 33 by FDS or other methods.

[0117] By adopting the above technical solution, the first longitudinal beam 30 can be conveniently installed on the front cabin 10, and can also connect and support the battery cover, thereby improving the stability of the battery cover.

[0118] Please refer again Figure 1 In some embodiments, the vehicle body frame structure 100 further includes a front anti-collision beam 40 , and two ends of the front anti-collision beam 40 are respectively connected to the two front longitudinal beams 13 .

[0119] The front anti-collision beam 40 is used to conduct and effectively absorb the collision energy when the vehicle collides, and minimize the damage to the body frame structure caused by the impact force to protect the vehicle. The two ends of the front anti-collision beam 40 are connected to the two front longitudinal beams 13, and can also transfer part of the energy to the front longitudinal beams 13, and the front longitudinal beams 13 absorb part of the energy. The front anti-collision beam 40 can be fixedly connected to the two front longitudinal beams 13 by fasteners or welding. In addition, an energy absorption box is installed between the front anti-collision beam 40 and the front longitudinal beam 13, one end of the energy absorption box is connected to the front anti-collision beam 40, preferably by bolt connection; the other end of the energy absorption box is connected to the front longitudinal beam 13, preferably by bolt connection. The energy absorption box is a box-shaped structure with an internal energy absorption structure and a crush deformation direction guiding design. It can absorb the collision energy and deform along the predetermined design direction when the vehicle body collides with the front. By connecting the front anti-collision beam 40 and the energy absorption box to the front longitudinal beam 13 with bolts, it is possible to easily replace the front anti-collision beam and the energy absorption box that are damaged by energy absorption in the event of a collision, thereby improving the convenience of maintenance.

[0120] Please refer to Fig.11 , Fig.11 is a schematic diagram of the force on the vehicle frame structure 100 after a collision. Fig.11The arrow in the figure indicates the direction of force transmission. When the front part of the vehicle body is hit, the energy enters the front longitudinal beam 13 from the front anti-collision beam 40, and is transmitted to the front wall cross beam 12 and the first longitudinal beam 30 by the front torque box 14. Therefore, most of the energy can be absorbed by the integrated front compartment 10, and the unabsorbed part of the energy continues to be transmitted along the battery to the middle and rear of the vehicle body, and is finally absorbed and dispersed by the lower body, achieving the collision energy absorption effect.

[0121] By adopting the above technical solution, the front anti-collision beam 40 and the integrated front cabin 10 can absorb or transfer the energy of the front collision of the vehicle body to the entire vehicle body, thereby achieving a collision energy absorption effect and improving the safety of the vehicle.

[0122] Please refer to Figure 1 and Figure 2 In some embodiments, the rear floor 20 further includes two rear longitudinal beams 22 and a rear floor cross beam 23 integrally formed with the rear cross beam 21. The rear floor cross beam 23 and the rear cross beam 21 are spaced apart and arranged opposite to each other in the first direction X. The two rear longitudinal beams 22 are spaced apart and arranged opposite to each other in the second direction Y. The two ends of the rear longitudinal beam 22 are respectively connected to the rear cross beam 21 and the rear floor cross beam 23.

[0123] The rear floor cross beam 23 is located at the rear part of the vehicle, and its main function is to support the vehicle body. The rear cross beam 21 can extend along the second direction; the rear longitudinal beam 22 can extend along the first direction X. The rear cross beam 21, the rear longitudinal beam 22 and the rear floor cross beam 23 are an integral die-cast structure with good integrity.

[0124] By adopting the above technical solution, the rear floor 20 includes an integrally formed rear cross beam 21, a rear longitudinal beam 22 and a rear floor cross beam 23, and the flexibility of the die-casting design is utilized to enable the rear floor 20 to have the functions of a traditional assembled rear floor 20; the rear floor 20 of the embodiment of the present application does not need to be manufactured by welding multiple parts, thereby improving the structural strength and simplifying the manufacturing process.

[0125] In some embodiments, the rear floor 20 further includes two rear torsion boxes 24 , which are respectively disposed at two ends of the rear cross beam 21 in the second direction Y. One end of the rear torsion box 24 is connected to the rear longitudinal beam 22 , and the other end is connected to the first longitudinal beam 30 .

[0126] The rear torsion box 24 is used to connect the rear longitudinal beam 22 and the first longitudinal beam 30 and ensure the continuity of force transmission between the two. Optionally, in order to enhance the structural strength and energy absorption effect of the rear torsion box 24, a reinforcing rib may be provided on the rear torsion box 24.

[0127] By providing the rear torsion box 24 , the structural strength of the rear floor 20 is improved, and the transmission effect of the impact force of the rear floor 20 during a vehicle collision is improved, thereby improving the safety performance of the vehicle body frame structure 100 .

[0128] Please refer to Figure 2 In some embodiments, mounting seats 221 are respectively provided on the two rear longitudinal beams 22 .

[0129] The mounting seat 221 extends in the height direction of the vehicle body, and the mounting seat 221 can be used to install the shock absorbing device of the upper vehicle body, and is also a fixed connection point between the vehicle body frame structure 100 and the upper vehicle body. Optionally, a plurality of reinforcing ribs can be arranged in the mounting seat.

[0130] Please continue to refer to Figure 1 and Figure 2 In some embodiments, the vehicle body frame structure 100 further includes a rear anti-collision beam 50 , which is connected to an end of the rear floor 20 away from the front cabin 10 .

[0131] The middle portion of the rear anti-collision beam 50 protrudes in a direction away from the front cabin 10. Optionally, the rear anti-collision beam 50 may be connected to the two rear longitudinal beams 22. The rear anti-collision beam 50 is used to effectively absorb collision energy when the vehicle collides, and minimize the damage to the vehicle frame structure caused by the impact force, so as to protect the vehicle.

[0132] Please refer to Figure 2 and Fig.12 , Fig.12 The arrow in the figure indicates the direction of force transmission. When the rear of the vehicle is hit, the energy enters the rear floor crossbeam 23 and the rear longitudinal beam 22 from the rear anti-collision beam 50, and most of the energy is absorbed by the rear floor 20. The unabsorbed part continues to be transmitted along the first longitudinal beam 30 to the middle and front of the vehicle body, and is finally absorbed and dispersed by the vehicle body frame structure 100, thereby achieving the collision energy absorption effect.

[0133] By adopting the above technical solution, the rear anti-collision beam 50 and the integrated rear floor 20 can absorb or transfer the energy of the rear collision of the vehicle body to the entire vehicle body, thereby achieving a collision energy absorption effect and improving the safety of the vehicle.

[0134] Please refer to Figure 3 , Figures 6 to 8 In some embodiments, the vehicle body frame structure 100 also includes a reinforcing structure, which is disposed on at least one of the front cabin 10, the rear floor 20 and the longitudinal beam 30, and the cross-sectional shape of the reinforcing structure includes at least one of a U-shape, an H-shape, an I-shape and an N-shape.

[0135] The reinforcement structure is used to enhance the structural strength of the vehicle frame structure 100, and the position and structure of the reinforcement structure can be set according to the structural performance requirements of the vehicle frame structure 100. For example, some reinforcement structures are arranged at the locations of the front cabin 10 or the rear floor 20 where the force is relatively large. It can be understood that the location of the reinforcement structure can also be set according to at least one analysis result of topological analysis, load analysis, and collision performance analysis.

[0136] The specific structural design of the reinforcement structure is flexible. For example, the cross-sectional shape of the reinforcement structure includes one or more of a U-shape, an H-shape, an X-shape, and an N-shape. It should be noted that the above shapes are for describing the cross-sectional shape. In actual situations, the cross-sectional shape of the reinforcement structure may be the same as or similar to the above shapes.

[0137] By providing the reinforcement structure, the structural strength and structural stability of the vehicle body frame structure 100 are enhanced; the structure of the reinforcement structure can be flexibly manufactured using a die-casting process.

[0138] Please refer to Figures 1 to 3 , Figures 6 to 8 In some embodiments, the reinforcement structure includes a first reinforcement structure 71, and the cross section of the first reinforcement structure 71 includes at least two first reinforcement edges 711 arranged at intervals and a first connecting edge 712 connected to one end of two adjacent first reinforcement edges 711. The two first reinforcement edges 711 and the first connecting edge 712 form a U-shaped structure. The first reinforcement structure 71 can improve the structural strength and torsional rigidity of the vehicle body frame structure 100.

[0139] In some embodiments, a front longitudinal beam 13 is disposed at one end of the front compartment 10 away from the rear floor 20 , and the first reinforcement structure 71 is disposed on the front longitudinal beam 13 , and / or the first reinforcement structure 71 is disposed on the rear floor 20 .

[0140] Optionally, the first reinforcement structure 71 on the rear floor 20 is located at an end of the rear cross beam 21 away from the front cabin 10 .

[0141] It can be understood that there can be multiple first reinforcement structures 71 and the first reinforcement structure 71 can also be arranged at other locations of the vehicle body frame structure 100, such as the rear longitudinal beam 22.

[0142] By providing the first reinforcement structure 71 on the front longitudinal beam 13 and / or the rear floor 20 , the structural strength of the front longitudinal beam 13 and / or the rear floor 20 is improved, and the integrally die-cast front longitudinal beam 13 can replace the traditional front longitudinal beam assembly.

[0143] Please refer to Figures 1 to 3 , Figure 7 , Figure 8 The reinforcing structure includes a second reinforcing structure 72, the cross section of the second reinforcing structure 72 includes a first top edge 721 and second reinforcing edges 722 arranged at both ends of the first top edge 721 along the first direction X, the second reinforcing edges 722 include a first extending edge 7221 and a second extending edge 7222, the first extending edge 7221 is parallel to or at an angle to the height direction of the vehicle body, and the second extending edge 7222 is parallel to or at an angle to the first direction X.

[0144] The first top edge 721 and the two second reinforcement edges 722 form a "X"-shaped structure. The second reinforcement structure 72 can extend in both the height direction of the vehicle body and the first direction X, thereby improving the structural strength in both the height direction and the length direction of the vehicle body.

[0145] In some embodiments, the second reinforcement structure 72 is disposed on the front cabin 10 , and / or the second reinforcement structure 72 is disposed on the rear floor 20 .

[0146] Optionally, the second reinforcement structure 72 is disposed at one end of the front enclosure cross beam 12 close to the front longitudinal beam 13 ; the second reinforcement structure 72 is also disposed at one end of the rear cross beam 21 close to the front cabin 10 .

[0147] Since the height of the front longitudinal beam 13 is usually higher than the height of the first longitudinal beam 30, and the front wall cross beam 12 is arranged between the front longitudinal beam 13 and the first longitudinal beam 30, the front wall cross beam 12 and the second reinforcement structure 72 on the front wall cross beam 12 can extend in the height direction of the vehicle body and in the first direction X.

[0148] In addition, since the height of the rear longitudinal beam 22 is usually higher than that of the first longitudinal beam 30, the rear cross beam 21 connected between the rear longitudinal beam 22 and the first longitudinal beam 30 and the second reinforcement structure 72 on the rear cross beam 21 can extend along the height direction and the first direction X of the vehicle body at the same time, and play a reinforcement role in the height direction and the length direction of the vehicle body.

[0149] It is understandable that the second reinforcement structure 72 may also be disposed at other locations, such as on the rear longitudinal beam 22 .

[0150] By adopting the above technical solution, the second reinforcement structure 72 is adapted to the structure of the front cabin 10 and the rear floor 20 , and the structural strength of the front cabin 10 and / or the rear floor 20 can be improved.

[0151] In some embodiments, the reinforcement structure further includes a third reinforcement structure 73 , the cross section of which includes at least two third reinforcement edges 731 extending along the height direction of the vehicle body and a second connecting edge 732 connecting two adjacent third reinforcement edges 731 .

[0152] The second connecting edge 732 may be connected to the middle of the two third reinforcing edges 731 , and the second connecting edge 732 may extend along the first direction X or form an angle with the first direction X. In this case, the cross section of the third reinforcing structure 73 is H-shaped.

[0153] By adopting the above technical solution, the third reinforcement structure 73 has a higher structural strength and can reduce the deformation probability of the part where it is located.

[0154] In some embodiments, the third reinforcement structure 73 is disposed at one end of the front compartment 10 close to the rear floor 20 .

[0155] Optionally, the third reinforcement structure 73 is disposed at one end of the front enclosure cross beam 12 close to the first longitudinal beam 30 .

[0156] By providing the third reinforcement structure 73 , the integrally die-cast front compartment 10 has a higher structural strength.

[0157] Please refer to Figures 1 to 3 , Figures 6 to 8 In some embodiments, a second reinforcing structure 72 is provided at one end of the front cross beam 12 close to the front longitudinal beam 13, and a third reinforcing structure 73 is provided at one end of the front cross beam 12 close to the rear floor 20; a first reinforcing structure 71 is provided at one end of the rear cross beam 21 away from the front cabin 10, and a first reinforcing structure 71 and a second reinforcing structure 72 are provided at one end of the rear cross beam 21 close to the front cabin 10.

[0158] Please refer to Figure 1 and Figure 4 In some embodiments, a reinforcing rib structure 60 is provided on the front cabin 10 and / or the rear floor 20. The reinforcing rib structure 60 includes a first reinforcing rib 61 and a second reinforcing rib 62. The extension directions of the first reinforcing rib 61 and the second reinforcing rib 62 are intersecting.

[0159] The reinforcing rib structure 60 refers to a rib structure that can improve the structural strength. Optionally, the front cross beam 11 of the front cabin 10 and the rear cross beam 21 of the rear floor 20 are both provided with a reinforcing rib structure 60. The reinforcing rib structure is integrally formed with the front cabin 10 or the rear floor 20. The reinforcing rib structure 60 includes a plurality of first reinforcing ribs 61 and a plurality of second reinforcing ribs 62, and the first reinforcing ribs 61 and the second reinforcing ribs 62 can be alternately arranged, and adjacent first reinforcing ribs 61 and second reinforcing ribs 62 are cross-connected to form a V-shaped, X-shaped, or other structure.

[0160] By providing the reinforcing rib structure 60 and cross-disposing the first reinforcing rib 61 and the second reinforcing rib 62, the structural strength and bending-torsional rigidity of the front compartment 10 and / or the rear floor 20 can be improved, and the energy transmission and absorption functions during vehicle body collision can be achieved.

[0161] In other embodiments, the reinforcing rib structure 60 may also be other structures, such as extending in a single direction or a honeycomb structure, which is not limited here.

[0162] An embodiment of the second aspect of the present application provides a vehicle, comprising a vehicle body frame structure 100 as provided in the first aspect.

[0163] The vehicle provided in the embodiment of the present application includes the above-mentioned vehicle body frame structure 100, which can also improve manufacturing efficiency and manufacturing quality.

[0164] Please refer to Figure 1 , Figure 2 , Fig. 9 and Fig.10The vehicle further includes a battery, which includes a battery cover plate 200 and a plurality of battery cells. The battery cover plate 200 is disposed within the frame of the vehicle body frame structure 100 and is connected to the vehicle body frame structure 100 .

[0165] The battery cover 200 may be rectangular, circular, oval, etc., for example, Fig. 9 As shown, the battery cover plate is rectangular. Optionally, the battery cover plate 200 is connected to the front compartment 10, the rear floor 20 and the two first longitudinal beams 30 on all sides to improve the stability of the battery cover plate 200. The battery cover plate 200 can be connected to the vehicle body frame structure 100 by bolts or other connecting parts.

[0166] Optionally, during assembly, the battery cover 200 can be first fixed to the vehicle frame structure 100, multiple battery cells can be fixed to the bottom plate through colloid, and then the multiple battery cells and the bottom plate can be fixed to one side of the battery cover 200, and the battery cells can be fixed between the battery cover 200 and the bottom plate to assemble into a battery.

[0167] By adopting the above technical solution, the vehicle uses CTC technology to install batteries, shortening the assembly process chain of CTC technology.

[0168] In some embodiments, the vehicle body frame structure 100 includes a front cabin 10, a rear floor 20 and two first longitudinal beams 30. The front cabin 10 and the rear floor 20 are both integral die-cast parts. The two ends of the first longitudinal beam 30 are respectively detachably connected to the front cabin 10 and the rear floor 20 to form a frame for installing the battery cover. A front cross beam 11 is provided at the end of the front cabin 10 facing the rear floor 20, and a rear cross beam 21 is provided at the end of the rear floor 20 facing the front cabin 10. The front cross beam 11, the rear cross beam 21 and the two first longitudinal beams 30 form a rectangular frame structure. Reinforcement structures are respectively provided on the front cabin 10 and the rear floor 20.

[0169] The body frame structure 100 provided in the embodiment of the present application integrates most of the parts through the integrated die-cast front cabin 10 and rear floor 20, thereby reducing the number of body parts and reducing the production process, thereby improving the efficiency of vehicle manufacturing; the overall casting process reduces the intermediate welding, riveting and other links, and the overall strength and rigidity of the components are improved; due to the overall structure of the integrated design, the rigidity of the whole vehicle is also improved compared to the spliced ​​parts during the vehicle driving process. At the same time, the body frame structure 100 with a highly integrated strategy can reduce the weight by 20%-25% compared to the sheet metal body structure of the same structure.

[0170] The embodiment of the present application is based on CTC technology, and uses an integrated die-cast front cabin 10 and rear floor 20 and a pair of first longitudinal beams 30 to form a battery installation space, further reducing the number of lower body parts and shortening the CTC technology assembly process chain. The first longitudinal beam 30 is detachably connected to the front cabin 10 and the rear floor 20, and the wheelbase and battery compartment space of the vehicle are adjusted by the length-adjustable first longitudinal beam 30; the front cabin 10 and the rear floor 20 can be shared by multiple platform models, reducing the overall vehicle manufacturing cost and realizing rapid iteration of models.

[0171] The front compartment 10 includes a front cross beam 11, a front wall cross beam 12 and two front longitudinal beams 13, and the rear floor 20 includes a rear cross beam 21, two rear longitudinal beams 22 and a rear floor cross beam 23. The structures of the front compartment 10 and the rear floor 20 can absorb or transfer the load when the vehicle body collides to the entire vehicle body. The front compartment 10 and the rear floor 20 utilize the flexibility and openness of die-casting design, use a variety of structural reinforcement structures, and can be integrated to replace the original front longitudinal beam 13, rear longitudinal beam 22 and middle cross beam part.

[0172] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A vehicle body frame structure, characterized in that: include: forward cabin; a rear floor disposed opposite to the front cabin in a first direction; Two first longitudinal beams are respectively connected between the front cabin and the rear floor, the two first longitudinal beams are spaced apart in a second direction, and the second direction intersects the first direction; At least one of the front compartment and the rear floor is an integral die-casting, and the front compartment, the two first longitudinal beams and the rear floor together form a frame for mounting a battery cover.

2. The vehicle body frame structure according to claim 1, characterized in that: The two ends of the first longitudinal beam are detachably connected to the front cabin and the rear floor respectively.

3. The vehicle frame structure according to claim 1, characterized in that: The front compartment includes a front cross beam arranged toward one end of the rear floor, and the rear floor includes a rear cross beam arranged toward one end of the front compartment. The front cross beam, the rear cross beam and the two first longitudinal beams form a frame.

4. The vehicle frame structure according to claim 3, characterized in that: The front compartment also includes a front enclosure crossbeam and two front longitudinal beams integrally formed with the front crossbeam, the front crossbeam is arranged at one end of the front enclosure crossbeam facing the rear floor, the two front longitudinal beams are arranged at one end of the front enclosure crossbeam away from the rear floor, and the two front longitudinal beams are spaced apart in the second direction.

5. The vehicle body frame structure according to claim 4, characterized in that: The front compartment further includes two front torsion boxes, which are respectively arranged at two ends of the front enclosure cross beam in the second direction, one end of the front torsion box is connected to the front longitudinal beam, and the other end is connected to the first longitudinal beam.

6. The vehicle body frame structure according to claim 5, characterized in that: One end of the front torsion box is bent toward the inner side of the vehicle body frame structure and connected to the front longitudinal beam, and the other end of the front torsion box is connected to the first longitudinal beam.

7. The vehicle body frame structure according to claim 5, characterized in that: The first longitudinal beam is provided with a first mounting hole, and the first longitudinal beam is fixedly connected to the front torque box via a fastener penetrating through the first mounting hole.

8. The vehicle body frame structure according to claim 7, characterized in that: The first longitudinal beam includes a main body and a first part and a second part arranged on both sides of the main body along a second direction, one end of the main body is attached to the front torque box and the first mounting hole is arranged on the side of the main body, a second mounting hole is arranged on the top of the main body, and the second part extends toward the frame and is used to support the battery cover.

9. The vehicle body frame structure according to claim 4, characterized in that: The vehicle body frame structure further comprises a front anti-collision beam, and two ends of the front anti-collision beam are respectively connected to the two front longitudinal beams.

10. The vehicle body frame structure according to claim 4, characterized in that: The rear floor also includes two rear longitudinal beams and a rear floor cross beam that are integrally formed with the rear cross beam. The rear floor cross beam and the rear cross beam are spaced apart and arranged opposite to each other in a first direction, and the two rear longitudinal beams are spaced apart and arranged opposite to each other in the second direction. The two ends of the rear longitudinal beam are respectively connected to the rear cross beam and the rear floor cross beam.

11. The vehicle body frame structure according to claim 10, characterized in that: The rear floor further includes two rear torsion boxes, which are respectively arranged at two ends of the rear cross beam in the second direction, one end of the rear torsion box is connected to the rear longitudinal beam, and the other end is connected to the first longitudinal beam.

12. The vehicle frame structure according to any one of claims 1 to 11, characterized in that: The vehicle body frame structure further comprises a rear anti-collision beam, which is connected to an end of the rear floor away from the front cabin.

13. The vehicle frame structure according to any one of claims 1 to 11, characterized in that: The vehicle body frame structure also includes a reinforcing structure, which is arranged on at least one of the front cabin, the rear floor and the longitudinal beam, and the cross-sectional shape of the reinforcing structure includes at least one of a U-shape, an H-shape, an I-shape and an N-shape.

14. The vehicle body frame structure according to claim 13, characterized in that: The reinforcement structure includes a first reinforcement structure, and a cross section of the first reinforcement structure includes at least two first reinforcement edges arranged at intervals and a first connecting edge connected to one end of two adjacent first reinforcement edges.

15. The vehicle body frame structure according to claim 14, characterized in that: A front longitudinal beam is disposed at one end of the front cabin away from the rear floor, the first reinforcement structure is disposed on the front longitudinal beam, and / or The first reinforcement structure is disposed on the rear floor.

16. The vehicle body frame structure according to claim 13, characterized in that: The reinforcement structure includes a second reinforcement structure, the cross-section of the second reinforcement structure includes a first top edge and a second reinforcement edge arranged at both ends of the first top edge along a first direction, the second reinforcement edge includes a first extension edge and a second extension edge, the first extension edge is parallel to or at an angle to the height direction of the vehicle body, and the second extension edge is parallel to or at an angle to the first direction.

17. The vehicle body frame structure according to claim 16, characterized in that: The second reinforcement structure is provided on the front cabin, and / or, The second reinforcement structure is disposed on the rear floor.

18. The vehicle body frame structure according to claim 13, characterized in that: The reinforcement structure includes a third reinforcement structure, and a cross section of the third reinforcement structure includes at least two third reinforcement edges extending along a height direction of the vehicle body and a second connecting edge connected between two adjacent third reinforcement edges.

19. The vehicle body frame structure according to claim 18, characterized in that: The third reinforcement structure is disposed at one end of the front compartment close to the rear floor.

20. The vehicle frame structure according to any one of claims 1 to 11, characterized in that: A reinforcing rib structure is provided on the front cabin and / or the rear floor, and the reinforcing rib structure includes a first reinforcing rib and a second reinforcing rib, and the extension directions of the first reinforcing rib and the second reinforcing rib are arranged to intersect.

21. A vehicle, characterized in that: include: A vehicle body frame structure as claimed in any one of claims 1 to 20.

22. The vehicle according to claim 21, characterized in that The vehicle further comprises a battery, wherein the battery comprises a battery cover plate and a plurality of battery cells, wherein the battery cover plate is arranged in and connected to the vehicle body frame structure, and the plurality of battery cells are connected to the battery cover plate.

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