Vehicle body frame structure and vehicle

Abstract

A vehicle body frame structure (100), comprising: an engine compartment (10); a rear floor (20) arranged opposite to the engine compartment (10) in a first direction; and two first longitudinal beams (30) respectively connected between the engine compartment (10) and the rear floor (20), the two first longitudinal beams (30) being arranged at intervals in a second direction, and the second direction intersecting with the first direction. At least one of the engine compartment (10) and the rear floor (20) is an integrated die casting, and the engine compartment (10), the two first longitudinal beams (30) and the rear floor (20) together enclose a frame for mounting a battery. Also disclosed is a vehicle. The number of vehicle body parts is reduced, thus shortening the production process chain, and improving the manufacturing efficiency and the manufacturing quality.

Description

Body frame structure and vehicle

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on July 21, 2023, with application number 202310905615.8, and invention name “Body frame structure and vehicle”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of vehicles, and in particular to a vehicle body frame structure and a vehicle. Background Art

[0003] Energy conservation and emission reduction are the key to the sustainable development of the automotive industry. New energy vehicles have become an important part of the sustainable development of the automotive industry due to their energy-saving and environmental protection advantages.

[0004] Currently, the lower body structure of new energy vehicles typically consists of parts such as the body frame and battery pack. During manufacturing, sheet metal parts are first welded together to form a small assembly, which is then welded together to form the body frame. The battery pack is then assembled onto the body frame. However, this traditional manufacturing process has a long manufacturing cycle and large cumulative manufacturing errors among assembly parts. This makes it difficult to adapt to the rapid pace of new energy vehicle iteration in terms of manufacturing efficiency and quality, and the body frame structure needs to be optimized and modified.

[0005] Summary of the Invention

[0006] In view of this, the present application provides a vehicle body frame structure and a vehicle to improve manufacturing efficiency and manufacturing quality.

[0007] The embodiment of the first aspect of the present application provides a vehicle body frame structure, comprising:

[0008] forward cabin;

[0009] a rear floor disposed opposite to the front cabin in a first direction;

[0010] two first longitudinal beams, respectively connected between the front cabin and the rear floor, the two first longitudinal beams being spaced apart in a second direction, the second direction intersecting the first direction;

[0011] At least one of the front compartment and the rear floor is an integral die-casting component, and the front compartment, the two first longitudinal beams and the rear floor together form a frame for installing a battery.

[0012] The front compartment and / or rear floor in the vehicle body frame structure provided by this application are integrally die-cast, reducing the number of vehicle body parts and the number of welding processes, thereby resolving the problem of large cumulative manufacturing errors among components. Furthermore, the front compartment, rear floor, and two first longitudinal beams form a frame for mounting the batteries, creating a battery mounting space. During assembly, the batteries can be directly secured to the frame. Consequently, this vehicle body frame structure reduces the number of vehicle body parts, shortens the production process chain, and improves manufacturing efficiency and quality.

[0013] In some embodiments, both ends of the first longitudinal beam are detachably connected to the front cabin and the rear floor, respectively.

[0014] Because the first longitudinal beam is detachably connected to the front cabin and rear floor, it facilitates installation and removal. Furthermore, when assembling the vehicle frame, different lengths of first longitudinal beams can be selected based on wheelbase and / or battery space requirements. The die-cast front cabin and rear floor can accommodate a variety of vehicle models, enabling shared use across multiple platforms, reducing overall manufacturing costs and enabling rapid vehicle iteration.

[0015] 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.

[0016] 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.

[0017] In some embodiments, front torsion boxes are respectively provided at both ends of the front compartment in the second direction, and the first longitudinal beam is connected to the front torsion boxes.

[0018] By setting up a front torsion box, not only the structural strength of the front cabin can be improved, but also the transmission effect of the impact force of the front cabin during head-on collision or side collision can be improved, thereby improving the safety performance of the vehicle body frame structure; the first longitudinal beam is connected to the front torsion box, which is conducive to improving the connection strength and connection stability.

[0019] In some embodiments, the first longitudinal beam includes a main body and a second portion connected to one side of the main body, the main body and the second portion both extend along the first direction, the main body is used to form a rocker beam of the vehicle, and the second portion is used to connect the battery cover.

[0020] By adopting the above technical solution, the first longitudinal beam can serve as the vehicle's door sill beam and can also replace the longitudinal beam of the traditional battery pack. In this way, the vehicle body frame structure directly uses the front cabin, the rear floor and the two first longitudinal beams to form a frame for installing the battery, which significantly reduces the number of parts, reduces the weight of the vehicle, and improves the space utilization of the vehicle.

[0021] In some embodiments, one end of the main body extends beyond the second part along the first direction and is attached to the front torque box. A first mounting hole is provided on the side of the main body, and the first longitudinal beam is connected to the front torque box by a fastener passing through the first mounting hole; a second mounting hole is provided on the top of the main body.

[0022] By adopting the above technical solution, the main part is used to form the door sill beam of the vehicle, and the second part is used as the longitudinal beam of the battery, so that the first longitudinal beam integrates multiple functions and reduces the number of parts.

[0023] In some embodiments, the first longitudinal beam further includes a first portion connected to the other side of the main body portion, a third mounting hole is provided on the top of the first portion, and the first portion has an avoidance gap.

[0024] By adopting the above technical solution, the function of the first longitudinal beam is further improved, making it easier for the first longitudinal beam to connect with vehicle body parts.

[0025] In some embodiments, the front compartment includes an integrally formed front cross beam, a front wall cross beam and two front longitudinal beams, the front cross beam is arranged at one end of the front wall cross beam facing the rear floor, the two front longitudinal beams are arranged at one end of the front wall cross beam away from the rear floor, and the two front longitudinal beams are spaced apart in the second direction; the two front torsion boxes are respectively arranged at the two ends of the front wall 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.

[0026] The front cabin provided in the embodiment of the present application is manufactured by an integrated die-casting process, and the flexibility of 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, which improves the structural strength and simplifies the manufacturing process.

[0027] 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.

[0028] 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.

[0029] 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 to the entire vehicle body, achieving a collision energy absorption effect and improving the safety of the vehicle.

[0030] In some embodiments, rear torsion boxes are respectively provided at both ends of the rear floor along the second direction, and the first longitudinal beam is connected to the rear torsion boxes.

[0031] By connecting the first longitudinal beam to the rear torsion box, the connection strength between the rear floor and the first longitudinal beam can be improved, thereby improving the stability of the vehicle body frame structure.

[0032] In some embodiments, the rear floor includes an integrally formed rear cross beam, two rear longitudinal beams and a rear floor 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.

[0033] 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.

[0034] 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.

[0035] By providing a rear torsion box, the structural strength of the rear floor is improved, and the transmission effect of the impact force of the rear floor during a vehicle collision is improved, thereby improving the safety performance of the vehicle body frame structure.

[0036] 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.

[0037] 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 to the entire body of the vehicle, achieving a collision energy absorption effect and improving the safety of the vehicle.

[0038] 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 X-shape and an N-shape.

[0039] 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.

[0040] In some embodiments, the reinforcement structure includes a first reinforcement structure, wherein a cross-section of the first reinforcement structure includes at least two first reinforcement edges spaced apart from each other and a first connecting edge connecting one end of two adjacent first reinforcement edges. The first reinforcement structure can enhance the structural strength and torsional rigidity of the vehicle body frame structure.

[0041] In some embodiments, a front longitudinal beam is provided at one end of the front cabin away from the rear floor, and the first reinforcement structure is provided on the front longitudinal beam, and / or

[0042] The first reinforcement structure is provided on the rear floor.

[0043] By providing 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 providing the first reinforcement structure on the front longitudinal beam, the integrally die-cast front longitudinal beam can replace the traditional front longitudinal beam assembly.

[0044] 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 disposed at opposite ends of the top edge along a first direction. The second reinforcement edges include a first extension edge and a second extension edge. The first extension edge is parallel to or angled with the height direction of the vehicle body, and the second extension edge is parallel to or angled with the first direction. The second reinforcement structure can extend in both the height direction and the first direction of the vehicle body, thereby simultaneously enhancing the structural strength of the vehicle body in both the height and length directions.

[0045] In some embodiments, the second reinforcement structure is provided on the front cabin, and / or,

[0046] The second reinforcement structure is provided on the rear floor.

[0047] By adopting the above technical solution, the second reinforcement structure adapts to the structure of the front cabin and the rear floor, which can improve the structural strength of the front cabin and / or the rear floor.

[0048] 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 a height direction of the vehicle body and a second connecting edge connecting two adjacent third reinforcement edges.

[0049] 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.

[0050] In some embodiments, the third reinforcement structure is provided at one end of the front compartment close to the rear floor.

[0051] By providing the third reinforcement structure, the structural strength of the front cabin is improved.

[0052] 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.

[0053] 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 collision can be achieved.

[0054] An embodiment of the second aspect of the present application provides a vehicle, comprising the vehicle body frame structure as described in the first aspect.

[0055] 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.

[0056] 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 within the frame and connected to the vehicle frame structure, and the plurality of battery cells are connected to the battery cover.

[0057] By adopting the above technical solution, the vehicle uses CTC technology to install batteries, shortening the assembly process chain of CTC technology.

[0058] 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

[0059] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. 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 any creative work.

[0060] FIG1 is a schematic structural diagram of a vehicle body frame structure provided by one embodiment of the present application;

[0061] FIG2 is a perspective exploded view of the vehicle body frame structure shown in FIG1 with the front and rear anti-collision beams removed;

[0062] FIG3 is a top view of the vehicle body frame structure shown in FIG2 ;

[0063] FIG4 is a bottom view of the vehicle body frame structure shown in FIG2 ;

[0064] FIG5 is a perspective schematic diagram of the first longitudinal beam in the vehicle body frame structure shown in FIG2 ;

[0065] FIG6 is a cross-sectional view of the vehicle body frame structure shown in FIG3 along line AA;

[0066] 7 is a sectional view of the vehicle body frame structure shown in FIG3 along line BB;

[0067] FIG8 is a cross-sectional view of the vehicle body frame structure shown in FIG3 along line CC;

[0068] FIG9 is a schematic diagram of the assembly of a vehicle frame structure and a battery cover provided by one embodiment of the present application;

[0069] FIG10 is a side view of the vehicle body frame structure and the battery cover shown in FIG9;

[0070] FIG11 is a schematic diagram showing the force acting on the vehicle frame structure shown in FIG9 after a collision;

[0071] FIG12 is a second schematic diagram of the force on the vehicle frame structure shown in FIG9 after a collision.

[0072] The meanings of the symbols in the figure are as follows: 100, body frame structure; 200, battery cover; 10, front compartment; 11, front cross member; 12, front wall cross member; 13, front longitudinal member; 14, front torque box; 20, rear floor; 21, rear cross member; 22, rear longitudinal member; 221, mounting seat; 23, rear floor cross member; 24, rear torque box; 30, first longitudinal member; 31, main body; 311, first mounting hole; 312, second mounting hole; 32, first section; 321, third mounting hole; 322, avoidance gap; 33, second section; 40, front anti-collision beam; 50, rear anti-collision beam; 60, reinforcement rib structure; 61, first reinforcement rib; 62, second reinforcement rib; 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. Modes for Carrying Out the Invention

[0073] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended 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 those skilled in the art 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" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0075] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0076] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, 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 this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects 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 technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0080] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0081] In this 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 this application do not limit this. Battery cells may be cylindrical, flat, rectangular, or other shapes, etc., and the embodiments of this application do not limit this. Battery cells are generally divided into three types based on the packaging method: cylindrical battery cells, prismatic battery cells, and soft-pack battery cells, and the embodiments of this application do not limit this.

[0082] The battery referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in this application may include a battery module or a battery pack. A battery generally includes a casing that encloses one or more battery cells. The casing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0083] The technical solutions described in the embodiments of the present application are applicable to vehicles, which may be fuel vehicles, gas vehicles or new energy vehicles. 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] Currently, the lower body structure of new energy vehicles typically consists of parts such as the body frame and battery pack. During manufacturing, sheet metal parts are first welded together to form a small assembly, which is then welded together to form the body frame. The battery pack is then assembled onto the body frame. However, this traditional manufacturing process has a long manufacturing cycle and large cumulative manufacturing errors among assembly parts. This makes it difficult to adapt to the rapid pace of new energy vehicle iteration in terms of manufacturing efficiency and quality, and the body frame structure needs to be optimized and modified.

[0086] In view of this, the present application designs a vehicle body frame structure and a vehicle, wherein the vehicle 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 spaced apart 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 batteries.

[0087] The front cabin and / or rear floor in the vehicle frame structure provided by this application are integrally die-cast structures, which reduces the number of vehicle body parts and the number of welding processes, thereby resolving the problem of large cumulative manufacturing errors of parts. Furthermore, the front cabin, rear floor, and two first longitudinal beams form a frame within which the battery cover can be directly fixed during assembly. The battery cells are then installed in the space formed by the vehicle frame structure and the battery cover. This means that the battery cells are assembled onto the vehicle frame structure using CTC technology, further reducing the number of parts. Therefore, the aforementioned vehicle frame structure reduces the number of vehicle body parts, shortens the production process chain, and improves manufacturing efficiency and quality.

[0088] The first embodiment of the present application provides a vehicle frame structure. Referring to FIG1 , the vehicle frame structure 100 includes a front compartment 10, a rear floor 20, and two first longitudinal beams 30. The rear floor 20 and the front compartment 10 are disposed opposite each other in a first direction X. The two first longitudinal beams 30 are connected between the front compartment 10 and the rear floor 20, respectively. The two first longitudinal beams 30 are spaced apart in a second direction Y, which intersects the first direction X. At least one of the front compartment 10 and the rear floor 20 is an integral die-cast component. The front compartment 10, the two first longitudinal beams 30, and the rear floor 20 together form a frame for mounting batteries.

[0089] Referring to Figures 1 to 4, the front cabin 10 can carry various components within the front cabin, and the rear floor 20 is the floor portion of the rear passenger compartment. The front cabin 10 and the rear floor 20 also serve to absorb and transfer energy during a collision, and provide sufficient rigidity for the vehicle body frame. The front cabin 10 and the rear floor 20 are arranged relative to each other in a first direction X, which can be the longitudinal direction of the vehicle body. At least one of the front cabin 10 and the rear floor 20 is a one-piece die-casting, that is, the front cabin 10 and / or the rear floor 20 are an integral structure manufactured using an one-piece die-casting process. Optionally, both the front cabin 10 and the rear floor 20 are one-piece die-castings, which significantly reduces the number of parts and the number of assembly steps. The front cabin 10 and the rear floor 20 may be made of aluminum, steel, or other metal materials.

[0090] Two first longitudinal beams 30 are spaced apart in a second direction Y, serving as the left and right longitudinal beams of the vehicle body. The second direction Y can be the transverse direction of the vehicle body. It is understood that the second direction Y can also be inclined relative to the transverse direction of the vehicle body. The first longitudinal beams 30 can be a one-piece structure, providing good structural strength. They can be made of 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 batteries. The frame is a hollow structure, and the storage space in the middle of the frame can be used to install batteries. The structure of the front cabin 10 integrates the front cross beam of the battery, and the structure of the rear floor 20 integrates the rear cross beam 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 jointly fix the battery. Optionally, one or more of the front cabin 10, the rear floor 20 and the two first longitudinal beams 30 are provided with connection holes or other connection structures, and the front cabin 10, the rear floor 20 and the two first longitudinal beams 30 can jointly fix the battery cover.

[0092] During assembly, at least one of the front compartment 10 and the rear floor 20 is a one-piece die-cast component. The two first longitudinal beams 30 are connected between the front compartment 10 and the rear floor 20. Thus, the front compartment 10, the rear floor 20, and the two first longitudinal beams 30 form a frame, thus forming the vehicle body frame structure. The battery cover is then secured within the frame, and the battery cells are fixedly connected to the battery cover, completing the battery assembly. There can be multiple battery cells, which can be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to multiple battery cells connected in both series and parallel. The battery can also include other structures. For example, the battery can include a busbar component for electrically connecting the multiple battery cells. 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 is not limited thereto. The battery cell can be cylindrical, flat, rectangular, or have other shapes.

[0093] The front compartment 10 and / or rear floor 20 in the vehicle body frame structure 100 provided in this application are integrally die-cast structures, which reduces the number of vehicle body parts and the number of welding processes, thereby resolving the problem of large cumulative manufacturing errors among parts. Furthermore, the front compartment 10, rear floor 20, and two first longitudinal beams 30 form a frame within which the battery cover can be directly fixed during assembly. The battery cells are then installed into the space formed between the vehicle body frame structure 100 and the battery cover. This means that the battery cells are assembled onto the vehicle body frame structure 100 using CTC technology, further reducing the number of parts. Therefore, the aforementioned vehicle body frame structure 100 reduces the number of vehicle body parts, shortens the production process chain, and improves manufacturing efficiency and quality.

[0094] In some embodiments, the ends of the first longitudinal beam 30 are detachably connected to the front compartment 10 and the rear floor 20, respectively. The two first longitudinal beams may be the vehicle's door sill beams, or portions of such beams. Typically, a vehicle has two door sill beams, one on each side of the vehicle's transverse direction, i.e., on the left and right sides. The door sill beams can serve as one of the transmission paths for head-on / offset and side impacts. The ends of the first longitudinal beam 30 may be detachably connected to the front compartment 10 and the rear floor 20 by bolting or other means. Optionally, the ends of the first longitudinal beam 30 may be connected to the front compartment 10 and the rear floor 20 using flow drill screw (FDS) technology. FDS, also known as flow drill screw technology, utilizes the heat generated by the high-speed rotation of the screw to melt the parent material, increasing the pressure to penetrate the parent material and create threads in the parent material, thereby securing two or more layers of sheet metal together. Because the first longitudinal beam 30 is detachably connected to the front compartment 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 first longitudinal beams 30 can be selected according to the wheelbase and / or battery space requirements. The die-cast front compartment 10 and rear floor 20 can adapt to a variety of different vehicle models, enabling multi-platform vehicle models to share, reducing the overall vehicle manufacturing cost, and achieving rapid iteration of vehicle models.

[0095] 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.

[0096] The front crossbeam 11 may be strip-shaped and extend along the second direction Y; the rear crossbeam 21 may be strip-shaped at one end close to the front cabin 10 and extend along the second direction Y. It is understandable that the front crossbeam 11 may also be of other shapes. In some embodiments, the front cabin 10 and the rear floor 20 are both integral die-cast parts, the front crossbeam 11 is provided at the end of the front cabin 10 close to the rear floor 20, and the rear crossbeam 21 is provided at the end of the rear floor 20 close to the front cabin 10. The front crossbeam 11, the rear crossbeam 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 in shapes other than rectangular, such as circular.

[0097] 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 battery, saves the battery frame, and facilitates flexible arrangement of the battery.

[0098] In some embodiments, front torque boxes 14 are respectively provided at both ends of the front compartment 10 in the second direction Y, and the first longitudinal beam 30 is connected to the front torque boxes 14 .

[0099] The torque box is a key force-transmitting area within the vehicle body, connecting the beams and / or other components. The front torque box 14 is part of the integral die-cast front pod 10. Each front torque box 14 connects to a corresponding first longitudinal beam 30, securing the front pod 10 relative to the first longitudinal beam 30 and ensuring continuous force transmission between them. Optionally, reinforcing ribs may be provided to enhance the structural strength and energy absorption of the front torque box 14.

[0100] The provision of the front torsion box 14 not only enhances the structural strength of the front compartment 10 but also improves the transmission of impact forces during head-on or side collisions, thereby enhancing the safety of the vehicle frame structure. Furthermore, during a collision, the deformation of the reinforcement ribs absorbs collision energy, reducing the impact and damage to other parts of the vehicle body. Connecting the first longitudinal beam 30 to the front torsion box 14 improves connection strength and stability.

[0101] In some embodiments, the first longitudinal beam 30 includes a main portion 31 and a second portion 33 connected to one side of the main portion 31. The main portion 31 and the second portion 33 both extend along the first direction X. The main portion 31 is used to form a vehicle rocker beam, and the second portion 33 is used to connect the battery cover.

[0102] The first longitudinal beam 30 is an integrally formed structure, with the main portion 31 and the second portion 33 integrally connected, providing high structural strength. The second portion 33 extends into the frame and is used to connect to the battery cover. During assembly, the battery cover can be connected to the main portion 31 and / or the second portion 33 using methods such as FDS.

[0103] The first longitudinal beam 30 provided in the embodiment of the present application can serve as a door sill beam of the vehicle and can also replace the longitudinal beam of a traditional battery pack. In this way, the vehicle body frame structure 100 directly uses the front compartment 10, the rear floor 20 and the two first longitudinal beams 30 to form a frame for installing batteries, which significantly reduces the number of parts, reduces the weight of the vehicle, and improves the space utilization of the vehicle.

[0104] In some embodiments, one end of the main body 31 extends beyond the second portion 33 along the first direction X and is attached to the front torque box 14. A first mounting hole 311 is provided on the side of the main body 31, and the first longitudinal beam 30 is connected to the front torque box 14 via a fastener passing through the first mounting hole 311. A second mounting hole 312 is provided on the top of the main body 31.

[0105] The length of the main portion 31 can be greater than that of the second portion 33. The first mounting hole 311 is provided on the side of the main portion 31, where the side of the main portion 31 refers to the sidewall of the main portion 31 facing the second portion 33. Because the length of the main portion 31 is greater than that of the second portion 33, the second portion 33 can avoid the first mounting hole 311. When installing the first longitudinal beam 30, the main portion 31 is placed against the front torque box 14, and bolts are inserted from the outside to the inside through the front torque box 14 and the first mounting hole 311 to securely connect the first longitudinal beam 30 to the front torque box 14. The fasteners do not occupy the battery compartment space.

[0106] The number of first mounting holes 311 can be one or more. It is understood that the front torque box 14 is also provided with mounting holes corresponding to the first mounting holes 311 for receiving fasteners, such as bolts. One end of the first longitudinal beam 30 is attached to the front torque box 14. Optionally, the end of the first longitudinal beam 30 can be accommodated within the front torque box 14.

[0107] A second mounting hole 312 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 vehicle body height direction. Since the main body 31 can form a door sill beam, the second mounting hole 312 can be used to connect to the vehicle body or other components.

[0108] By adopting the above technical solution, the main portion 31 serves as the vehicle's rocker beam, and the second portion 33 serves as the battery longitudinal beam. Thus, the first longitudinal beam 30 integrates multiple functions and reduces the number of parts. The first longitudinal beam 30 can be detachably connected to the front torque box 14, facilitating the configuration of first longitudinal beams 30 of varying lengths based on vehicle body length requirements. The front torque box 14 has high structural strength, and the first longitudinal beam 30 maintains a stable connection to the front torque box 14. The first longitudinal beam 30 can be easily installed on the front compartment 10 and can also connect and support the battery cover, improving its stability.

[0109] In other embodiments, the first longitudinal beam 30 may also be welded to the front torque box 14 ; in still other embodiments, the first longitudinal beam 30 may also be connected to other parts of the front cabin 10 .

[0110] In some embodiments, the first longitudinal beam 30 further includes a first portion 32 connected to the other side of the main body 31 . The first portion 32 extends along the first direction X. A third mounting hole 321 is provided at the top of the first portion 32 and the first portion 32 has an avoidance notch 322 .

[0111] The first portion 32 is located on the side of the main portion 31 away from the frame. The third mounting hole 321 of the first portion 32 is used for connection to the vehicle body or other components. The clearance notch 322 in the first portion 32 is used to allow vehicle body components to pass through the clearance notch 322, facilitating connection of the first longitudinal beam 30 to the vehicle body structure.

[0112] By adopting the above technical solution, the function of the first longitudinal beam 30 is further improved, and it is convenient for the first longitudinal beam 30 to connect with vehicle body parts.

[0113] In some embodiments, the front compartment 10 includes an integrally formed front cross member 11, a front dash cross member 12, and two front longitudinal members 13. The front cross member 11 is disposed at one end of the dash cross member 12 that faces the rear floor 20. The two front longitudinal members 13 are disposed at one end of the dash cross member 12 that faces away from the rear floor 20. The two front longitudinal members 13 are spaced apart in the second direction Y. Two front torque boxes 14 are respectively disposed at opposite ends of the dash cross member 12 in the second direction Y. One end of the front torque box 14 is connected to the front longitudinal member 13, and the other end is connected to the first longitudinal member 30.

[0114] The dash cross member 12 can support the vehicle body. The shape of the dash cross member 12 is set according to the requirements of the vehicle body. The width of the dash cross member 12 in the first direction X can be greater than the width of the front cross member 11 .

[0115] The front longitudinal beams 13 may extend along the length direction of the vehicle body. The two front longitudinal beams 13 may play a major role in receiving force and absorbing energy when the vehicle collides.

[0116] The front cabin 10 provided in the embodiment of the present application includes an integrally formed front panel crossbeam 12, a front crossbeam 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 require multiple parts to be manufactured by welding, which improves the structural strength and simplifies the manufacturing process.

[0117] 11 , in some embodiments, one end of the front torque box 14 is bent toward the inside of the vehicle 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 .

[0118] The spacing between the two front longitudinal beams 13 is smaller than the distance between the two first longitudinal beams 30. The front torque box 14 is connected between the front longitudinal beams 13 and the first longitudinal beams 30. Therefore, the front torque box 14 bends and extends from the end connected to the first longitudinal beams 30 toward the inside of the vehicle frame structure. When the front of the vehicle is impacted, energy enters the front longitudinal beams 13 from the front anti-collision beam 40. The front torque box 14 then decomposes the energy and transfers it to the front cross member 12 and the first longitudinal beam 30, respectively. By employing this technical solution, the front torque box 14 can function as a force transmitter, improving the transmission of impact force to the front compartment 10 during head-on or side collisions, and enhancing the safety performance of the vehicle frame structure 100.

[0119] Referring to FIG. 1 again, 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 .

[0120] The front anti-collision beam 40 is used to conduct and effectively absorb collision energy when the vehicle collides, minimizing the damage to the vehicle 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, which 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 beams 13. One end of the energy absorption box is connected to the front anti-collision beam 40, preferably by bolts; the other end of the energy absorption box is connected to the front longitudinal beam 13, preferably by bolts. The energy absorption box is a box-shaped structure with an internal energy absorption structure and a crush deformation direction guidance design. It can absorb collision energy and deform along a 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.

[0121] Please refer to Figure 11, which shows the forces acting on the vehicle frame structure 100 after a collision. The arrows in Figure 11 indicate the direction of force transmission. When the front of the vehicle is impacted, energy flows from the front anti-collision beam 40 into the front longitudinal beam 13, and is then transferred by the front torsion box 14 to the front wall cross member 12 and the first longitudinal beam 30. As a result, most of the energy is absorbed by the integrated front compartment 10. The unabsorbed energy continues to flow through the battery to the middle and rear of the vehicle, ultimately being absorbed and dispersed by the lower body, achieving collision energy absorption.

[0122] By adopting the above technical solution, the front anti-collision beam 40 and the integrated front compartment 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.

[0123] 1 and 2 , in some embodiments, rear torsion boxes 24 are respectively provided at both ends of the rear floor panel 20 along the second direction Y, and the first longitudinal beam 30 is connected to the rear torsion boxes 24 .

[0124] Optionally, one end of the main body 31 extends beyond the second portion 33 along the first direction X and abuts against the rear torque box 24. A first mounting hole 311 is defined on the side of the main body 31. The main body 31 is connected to the rear torque box 24 via a fastener inserted through the first mounting hole 311. In this manner, the fastener is located at the end of the main body 31, eliminating the need for battery space. It is understood that the first longitudinal beam 30 may also be connected to the rear torque box 24 by welding or other means.

[0125] The rear torsion box 24 has a relatively high structural strength. By connecting the first longitudinal beam to the rear torsion box 24 , the connection strength between the rear floor 20 and the first longitudinal beam 30 can be increased, thereby improving the stability of the vehicle body frame structure 100 .

[0126] 1 and 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 beams 23 and the rear cross beam 21 are spaced apart and arranged opposite to each other in a first direction X. The two rear longitudinal beams 22 are spaced apart and arranged opposite to each other in a 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 .

[0127] The rear floor cross member 23 is located at the rear part of the vehicle and its main function is to support the vehicle body. The rear cross member 21 can extend along the second direction; the rear longitudinal member 22 can extend along the first direction X. The rear cross member 21, the rear longitudinal member 22 and the rear floor cross member 23 are an integral die-cast structure with good integrity.

[0128] 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. 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.

[0129] In some embodiments, two rear torsion boxes 24 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 .

[0130] 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, reinforcing ribs can be provided on the rear torsion box 24.

[0131] By providing the rear torsion box 24 , the structural strength of the rear floor 20 is improved, and the effect of transmitting the impact force of the rear floor 20 during a vehicle collision is improved, thereby improving the safety performance of the vehicle frame structure 100 .

[0132] Referring to FIG. 2 , in some embodiments, mounting seats 221 are respectively provided on the two rear longitudinal beams 22 .

[0133] The mounting base 221 extends along the height direction of the vehicle body. The mounting base 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 set in the mounting base.

[0134] 1 and 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 .

[0135] The middle portion of the rear anti-collision beam 50 protrudes away from the front compartment 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 in the event of a vehicle collision, minimizing damage to the vehicle frame structure caused by the impact force, thereby protecting the vehicle.

[0136] Refer to Figures 2 and 12. The arrows in Figure 12 indicate the direction of force transmission. When the rear of the vehicle is impacted, energy flows from the rear anti-collision beam 50 into the rear floor cross member 23 and rear longitudinal beam 22. Most of the energy is absorbed by the rear floor 20, while the unabsorbed portion continues to transfer along the first longitudinal beam 30 to the middle and front of the vehicle body, ultimately being absorbed and dispersed by the vehicle frame structure 100, achieving collision energy absorption.

[0137] 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.

[0138] Please refer to Figures 3, 6 to 8. In some embodiments, the vehicle body frame structure 100 also includes a reinforcement structure, which is provided on at least one of the front cabin 10, the rear floor 20 and the longitudinal beam 30. The cross-sectional shape of the reinforcement structure includes at least one of a U-shape, an H-shape, an X-shape, and an N-shape.

[0139] The reinforcement structures are used to enhance the structural strength of the vehicle body frame structure 100. The location and structure of the reinforcement structures can be determined based on the structural performance requirements of the vehicle body frame structure 100. For example, some reinforcement structures are located in locations of the front cabin 10 or rear floor 20 that are subject to greater forces. It will be appreciated that the location of the reinforcement structures can also be determined based on at least one of the results of a topological analysis, a load analysis, and a crash performance analysis.

[0140] 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 illustration purposes only. In actual situations, the cross-sectional shape of the reinforcement structure may be the same as or similar to the above shapes.

[0141] 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.

[0142] Referring to Figures 1 to 3 and 6 to 8, in some embodiments, the reinforcement structure includes a first reinforcement structure 71. The cross-section of the first reinforcement structure 71 includes at least two first reinforcement edges 711 spaced apart from each other and a first connecting edge 712 connecting 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 enhance the structural strength and torsional rigidity of the vehicle body frame structure 100.

[0143] In some embodiments, a front longitudinal beam 13 is provided at one end of the front compartment 10 away from the rear floor 20 , and the first reinforcement structure 71 is provided on the front longitudinal beam 13 , and / or the first reinforcement structure 71 is provided on the rear floor 20 .

[0144] 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 .

[0145] It can be understood that there can be multiple first reinforcement structures 71 and the first reinforcement structures 71 can also be provided at other locations of the vehicle body frame structure 100 , such as the rear longitudinal beam 22 .

[0146] 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.

[0147] 1 to 3 , 7 and 8 , the reinforcement structure includes a second reinforcement structure 72 . The cross-section of the second reinforcement structure 72 includes a first top edge 721 and second reinforcement edges 722 provided at both ends of the first top edge 721 along the first direction X. The second reinforcement edges 722 include a first extension edge 7221 and a second extension edge 7222 . The first extension edge 7221 is parallel to or at an angle to the height direction of the vehicle body, and the second extension edge 7222 is parallel to or at an angle to the first direction X.

[0148] The first top edge 721 and the two second reinforcement edges 722 form an X-shaped structure. The second reinforcement structure 72 can extend in the height direction of the vehicle body and the first direction X at the same time, and can simultaneously improve the structural strength of the vehicle body in the height direction and the length direction.

[0149] In some embodiments, the second reinforcement structure 72 is provided on the front compartment 10 , and / or the second reinforcement structure 72 is provided on the rear floor 20 .

[0150] Optionally, the second reinforcement structure 72 is provided at one end of the front enclosure cross member 12 close to the front longitudinal member 13 ; the second reinforcement structure 72 is also provided at one end of the rear cross member 21 close to the front cabin 10 .

[0151] Since the height of the front longitudinal beam 13 is usually higher than the height of the first longitudinal beam 30, and the front cross beam 12 is arranged between the front longitudinal beam 13 and the first longitudinal beam 30, the front cross beam 12 and the second reinforcement structure 72 on the front cross beam 12 can extend in the height direction of the vehicle body and in the first direction X.

[0152] In addition, since the height of the rear longitudinal beam 22 is generally 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, thereby playing a reinforcing role in the height direction and the length direction of the vehicle body.

[0153] It is understandable that the second reinforcement structure 72 may also be provided at other locations, such as on the rear longitudinal beam 22 .

[0154] By adopting the above technical solution, the second reinforcement structure 72 adapts to the structures of the front cabin 10 and the rear floor 20 , and can improve the structural strength of the front cabin 10 and / or the rear floor 20 .

[0155] 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 .

[0156] 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.

[0157] 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.

[0158] In some embodiments, the third reinforcement structure 73 is disposed at one end of the front compartment 10 close to the rear floor 20 .

[0159] Optionally, the third reinforcement structure 73 is provided at one end of the dash cross member 12 close to the first longitudinal member 30 .

[0160] By providing the third reinforcement structure 73 , the integrally die-cast front compartment 10 has a higher structural strength.

[0161] Please refer to Figures 1 to 3 and Figures 6 to 8. In some embodiments, a second reinforcement structure 72 is provided at one end of the front cross beam 12 close to the front longitudinal beam 13, and a third reinforcement structure 73 is provided at one end of the front cross beam 12 close to the rear floor 20; a first reinforcement structure 71 is provided at one end of the rear cross beam 21 away from the front cabin 10, and a first reinforcement structure 71 and a second reinforcement structure 72 are provided at one end of the rear cross beam 21 close to the front cabin 10.

[0162] 1 and 4 , in some embodiments, a reinforcing rib structure 60 is provided on the front compartment 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.

[0163] The rib structure 60 is a rib structure that enhances structural strength. Optionally, the rib structure 60 is provided on both the front crossbeam 11 of the front cabin 10 and the rear crossbeam 21 of the rear floor 20. The rib structure 60 is integrally formed with the front cabin 10 or the rear floor 20. The rib structure 60 includes a plurality of first ribs 61 and a plurality of second ribs 62. The first and second ribs 61, 62 may be arranged alternately, and adjacent first and second ribs 61, 62 may be cross-connected to form a V-shaped, X-shaped, or other structure.

[0164] 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 collision can be achieved.

[0165] 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.

[0166] An embodiment of the second aspect of the present application provides a vehicle, comprising the vehicle body frame structure 100 provided in the first aspect.

[0167] 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.

[0168] 1 , 2 , 9 and 10 , the vehicle further includes a battery. The battery includes a battery cover 200 and a plurality of battery cells. The battery cover 200 is disposed within and connected to the vehicle frame structure 100 .

[0169] The battery cover plate 200 can be rectangular, circular, or oval. For example, as shown in Figure 9, 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 enhance the stability of the battery cover plate 200. The battery cover plate 200 can be connected to the vehicle frame structure 100 using bolts or other connectors.

[0170] Optionally, during assembly, the battery cover 200 can be first fixed to the vehicle frame structure 100, and 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.

[0171] By adopting the above technical solution, the vehicle uses CTC technology to install batteries, shortening the assembly process chain of CTC technology.

[0172] 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.

[0173] The vehicle frame structure 100 provided in this embodiment integrates most of its components through an integrated die-cast front compartment 10 and rear floor 20, reducing the number of vehicle components while simplifying the production process and improving vehicle manufacturing efficiency. The integral casting process eliminates intermediate welding, riveting, and other steps, improving the overall strength and rigidity of the components. Due to the integrated design, the vehicle's overall rigidity during driving is also improved compared to that of spliced ​​parts. Furthermore, the highly integrated vehicle frame structure 100 can reduce weight by 20%-25% compared to a sheet metal vehicle structure of the same structure.

[0174] This embodiment of the application utilizes CTC technology, utilizing an integrated die-cast front compartment 10 and rear floor 20, along with a pair of first longitudinal beams 30, to create the battery installation space. This further reduces the number of lower body components and shortens the CTC assembly process. The first longitudinal beams 30 are detachably connected to the front compartment 10 and rear floor 20, allowing the vehicle's wheelbase and battery compartment space to be adjusted through the adjustable length of the first longitudinal beams 30. The front compartment 10 and rear floor 20 can be shared across multiple platforms, reducing overall manufacturing costs and enabling rapid vehicle iteration.

[0175] The front compartment 10 comprises a front cross member 11, a front dash cross member 12, and two front longitudinal members 13. The rear floor 20 comprises a rear cross member 21, two rear longitudinal members 22, and a rear floor cross member 23. These structures absorb or transmit collision loads throughout the vehicle body. Leveraging the flexibility and openness of die-casting design, the front compartment 10 and rear floor 20 utilize various structural reinforcements, enabling an integrated design that replaces the existing front longitudinal members 13, rear longitudinal members 22, and center cross member.

[0176] 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 various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A vehicle body frame structure, characterized in that: include: front 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 installing a battery.

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 or 2, 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 any one of claims 1 to 3, characterized in that: Front torsion boxes are respectively provided at two ends of the front cabin located in the second direction, and the first longitudinal beam is connected to the front torsion boxes.

5. The vehicle body frame structure according to claim 4, characterized in that: The first longitudinal beam includes a main body and a second portion connected to one side of the main body, the main body and the second portion both extend along the first direction, the main body is used to form a vehicle sill beam, and the second portion is used to connect a battery cover.

6. The vehicle body frame structure according to claim 5, characterized in that: One end of the main body extends beyond the second part along the first direction and fits against the front torque box. A first mounting hole is provided on the side of the main body. The first longitudinal beam is connected to the front torque box via a fastener passing through the first mounting hole. A second mounting hole is provided on the top of the main body.

7. The vehicle body frame structure according to claim 6, characterized in that: The first longitudinal beam further comprises a first portion connected to the other side of the main body portion, a third mounting hole is arranged on the top of the first portion and the first portion has an avoidance gap.

8. The vehicle body frame structure according to claim 5, characterized in that: The front compartment includes an integrally formed front cross beam, a front wall cross beam and two front longitudinal beams, the front cross beam is arranged at one end of the front wall cross beam facing the rear floor, the two front longitudinal beams are arranged at one end of the front wall cross beam away from the rear floor, and the two front longitudinal beams are spaced apart in the second direction; The two front torsion boxes 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.

9. The vehicle body frame structure according to claim 8, 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.

10. The vehicle body frame structure according to claim 8, 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.

11. The vehicle frame structure according to any one of claims 1 to 10, characterized in that: Rear torsion boxes are respectively provided at two ends of the rear floor along the second direction, and the first longitudinal beam is connected to the rear torsion boxes.

12. The vehicle body frame structure according to claim 11, characterized in that: The rear floor comprises an integrally formed rear cross beam, two rear longitudinal beams and a rear floor cross beam, the rear floor cross beam is spaced apart and arranged opposite to the rear cross beam in a first direction, the two rear longitudinal beams are spaced apart and arranged opposite to each other in the second direction, and two ends of the rear longitudinal beam are respectively connected to the rear cross beam and the rear floor cross beam; The two rear torsion boxes 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.

13. The vehicle frame structure according to any one of claims 1 to 12, 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.

14. The vehicle frame structure according to any one of claims 1 to 12, characterized in that: The vehicle body frame structure also includes a reinforcement structure, which is arranged on at least one of the front cabin, the rear floor and the longitudinal beam. The cross-sectional shape of the reinforcement structure includes at least one of a U-shape, an H-shape, an I-shape and an N-shape.

15. The vehicle body frame structure according to claim 14, 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.

16. The vehicle body frame structure according to claim 15, 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.

17. The vehicle frame structure according to any one of claims 14 to 16, 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.

18. The vehicle body frame structure according to claim 17, 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.

19. The vehicle frame structure according to any one of claims 14 to 18, 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.

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

21. The vehicle frame structure according to any one of claims 1 to 20, 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.

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

23. The vehicle according to claim 22, 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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