Vehicle

Abstract

The utility model provides a vehicle which comprises a vehicle body frame, the vehicle body frame comprises a frame beam body, the frame beam body is provided with a first side and a second side which are oppositely arranged, the first side faces the inner side of a vehicle body, and the second side faces the outer side of the vehicle body; the reinforcing structure is at least arranged on the first side, forms at least one cavity and is used for reinforcing the strength of the frame beam main body; wherein the frame beam main body is a first fiber reinforced composite material molded part, and the reinforcing structure is a second fiber reinforced composite material injection molded part. Therefore, the vehicle body frame of the vehicle can improve the light weight degree, simplify the manufacturing process and shorten the manufacturing period on the premise of meeting the performance such as rigidity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a vehicle. BACKGROUND

[0002] With the development of vehicle technology, users have increasingly high requirements for lightweight of vehicle bodies. Meanwhile, manufacturers have increasingly strong needs for shortening the manufacturing cycle of vehicles. However, the traditional vehicle body frame has problems such as complex manufacturing process, long manufacturing cycle and heavy overall weight. Therefore, how to improve the lightweight degree of the vehicle body frame under the premise of meeting the strength requirement and the rigidity requirement of the vehicle body frame has become one of the problems in the industry. CONTENT OF THE UTILITY MODEL

[0003] To solve the above technical problems, the embodiments of the present application provide a vehicle. The vehicle body frame of the vehicle can improve the lightweight degree of the vehicle body frame and the vehicle and simplify the manufacturing process under the premise of meeting the strength requirement and the rigidity requirement.

[0004] The embodiments of the present application are implemented through the following technical solutions.

[0005] The first aspect of the present application provides a vehicle, which comprises a vehicle body frame, and the vehicle body frame comprises: a frame beam main body, the frame beam main body has a first side and a second side arranged oppositely, the first side faces the inner side of the vehicle body, and the second side faces the outer side of the vehicle body; and a reinforcing structure, which is arranged at least on the first side and forms at least one cavity, and is used for reinforcing the strength of the frame beam main body; wherein the frame beam main body is a first fiber-reinforced composite material molded part, and the reinforcing structure is a second fiber-reinforced composite material injection molded part.

[0006] In the embodiments of the present application, since the frame beam main body and the reinforcing structure are both made of fiber-reinforced composite material, on the one hand, the lightweight composite material can replace steel to meet the lightweight requirements of the vehicle body frame and even the vehicle, and on the other hand, the fiber-reinforced composite material enables the vehicle body frame to be prepared by using the molding and injection molding processes, thereby simplifying the manufacturing process of the vehicle body frame and even the vehicle, reducing the manufacturing equipment investment and development cost, shortening the manufacturing cycle of the vehicle, and being beneficial to improving the part integration. Since the reinforcing structure is arranged on the frame beam main body and forms a cavity, the structural strength and rigidity (especially the bending rigidity and torsional rigidity) and the modal of the frame beam main body can be improved, the strength requirement and the rigidity requirement of the vehicle can be met, and the probability of failure of the vehicle resisting external pressure can be reduced. Therefore, the vehicle of the embodiments of the present application can improve the lightweight degree of the vehicle body under the premise of meeting the strength requirement and the rigidity requirement.

[0007] In some embodiments, the first fiber-reinforced composite molded part comprises a glass fiber-reinforced polypropylene composite molded part, wherein the weight fraction of the glass fiber is greater than or equal to 68 and less than or equal to 72, and the second fiber-reinforced composite injection molded part comprises a glass fiber-reinforced polypropylene composite injection molded part, wherein the weight fraction of the glass fiber is greater than or equal to 38 and less than or equal to 42.

[0008] By controlling the weight fraction of the glass fiber in the first fiber-reinforced composite within the above range, the frame beam body is beneficially molded, and the strength, rigidity, and processing convenience of the frame beam body can be optimized. By controlling the weight fraction of the glass fiber in the second fiber-reinforced composite within the above range, the flowability of the second fiber-reinforced composite is more beneficially improved, the injection molding of the reinforcing structure is beneficially facilitated, and the strength, rigidity, and processing convenience of the reinforcing structure can be optimized.

[0009] In some embodiments, the thickness of the frame beam body is 1.2 mm to 5 mm.

[0010] The thickness of the frame beam body within the above range is beneficial to avoid the thickness of the frame beam body being too low to meet the requirements of structural strength and rigidity as much as possible. By limiting the maximum thickness of the frame beam body, it is beneficial to avoid the thickness of the frame beam body being too high to affect the aesthetic performance of the vehicle or to interfere with the installation of other parts of the vehicle, etc.

[0011] In some embodiments, the reinforcing structure comprises a first reinforcing assembly, and the first reinforcing assembly comprises a plurality of reinforcing ribs. At least part of the plurality of reinforcing ribs are arranged in a staggered mesh shape, and the cavity is formed at least at the position of the mesh. Alternatively, the plurality of reinforcing ribs are connected end to end in a cylindrical shape, and the inner cavity of the cylinder constitutes the cavity.

[0012] In this way, the staggered mesh arrangement of the reinforcing ribs and / or the end-to-end connection of the plurality of reinforcing ribs in a cylindrical shape can form a lattice-shaped cavity or a cylindrical cavity, which is beneficial to the injection molding of the reinforcing structure on the one hand, and to the enhancement of the strength and rigidity of the vehicle body frame, especially the torsional rigidity and bending rigidity, on the other hand.

[0013] In some embodiments, the cavity is further enclosed by the reinforcing ribs and the frame beam body.

[0014] In this way, the reinforcing ribs can improve the strength of the frame beam body, thereby enhancing the overall strength and rigidity of the vehicle body frame.

[0015] In some embodiments, the thickness of the root of the reinforcing rib is 2.5 mm to 3.5 mm, the root of the reinforcing rib is the part where the reinforcing rib is connected to the frame beam body, and the thickness of the frame beam body is 2.5 mm to 3.5 mm.

[0016] The thickness of the root of the reinforcing rib and the thickness of the frame beam body are within the above range, the strength and rigidity of the frame beam body can be enhanced by arranging the reinforcing rib on the frame beam body, and the lightweight of the vehicle body frame can also be considered.

[0017] In some embodiments, the plurality of reinforcing ribs includes reinforcing ribs arranged at intervals, and the interval between adjacent reinforcing ribs is within the range of 20mm to 50mm.

[0018] The interval between adjacent reinforcing ribs is within the above range, which is beneficial to improving the strength and rigidity of the vehicle body frame while making the vehicle body frame lightweight.

[0019] In some embodiments, the length of each reinforcing rib extending away from the frame beam body is within the range of 5mm to 40mm.

[0020] The length of each reinforcing rib extending away from the frame beam body is within the above range, which is beneficial to improving the strength and rigidity of the frame beam body while reducing the outer contour size of the vehicle body frame and reducing the space occupied by the vehicle body frame.

[0021] In some embodiments, the plurality of reinforcing ribs are arranged upright relative to the frame beam body, and include first direction reinforcing ribs extending along the length direction of the frame beam body and second direction reinforcing ribs extending along the second direction intersecting the length direction.

[0022] Therefore, it is beneficial to improve the strength and rigidity of the vehicle body frame as a whole, to disperse and resist the torsion and lateral force during the vehicle collision or rollover process, and to improve the torsion resistance and bending ability of the vehicle.

[0023] In some embodiments, the reinforcing structure includes a first reinforcing assembly, the first reinforcing assembly includes a plurality of reinforcing ribs, at least part of the plurality of reinforcing ribs are arranged in a mesh shape in an interlaced manner, and a cavity is formed at least at the position of the mesh. The frame beam body is formed with a first plate segment and a recessed groove connected to the first plate segment and recessed to the outside of the vehicle body. The mesh formed by the reinforcing ribs formed in the recessed groove is larger than the mesh formed by the reinforcing ribs formed in the first plate segment.

[0024] Since the first plate segment has higher requirements for the modal, rigidity and strength of the vehicle body, by making the mesh formed by the reinforcing ribs formed in the first plate segment smaller than the mesh formed by the reinforcing ribs formed in the recessed groove, on the one hand, it is beneficial to improve the strength and rigidity of the first plate segment, especially the bending rigidity and torsional rigidity, and on the other hand, it can relatively improve the lightweight degree of the vehicle body frame as a whole, and overall consider the strength, rigidity and lightweight degree of the vehicle body frame.

[0025] In some embodiments, the recessed groove comprises a second plate segment, a third plate segment and a fourth plate segment connected in sequence, wherein the second plate segment and the fourth plate segment constitute groove sidewalls of the recessed groove, and the third plate segment constitutes a groove bottom wall of the recessed groove, and the reinforcing ribs formed in the recessed groove are connected to the second plate segment, the third plate segment and the fourth plate segment respectively.

[0026] In this way, the strength and rigidity of the vehicle body frame can be improved while improving the connection strength of the reinforcing ribs and the frame beam body.

[0027] In some embodiments, the vehicle body frame further comprises an interior and exterior trim mounting structure connected to the reinforcing structure, for mounting at least one of an interior trim part, an exterior trim part and an exterior component of the vehicle body.

[0028] In this way, the interior and exterior trim mounting structure can be integrated into the frame beam body, not only reliably supporting the interior and exterior trim, but also facilitating the reduction of the number of parts and the simplification of the manufacturing process, thereby improving manufacturing efficiency.

[0029] In some embodiments, the interior and exterior trim mounting structure is a second fiber-reinforced composite injection molding part.

[0030] In this way, on the one hand, the fiber-reinforced composite material with light weight can replace steel to meet the lightweight demand of the interior and exterior trim mounting structure, and on the other hand, it is beneficial to form the interior and exterior trim mounting structure by injection molding.

[0031] In some embodiments, part of the reinforcing ribs is arranged around the interior and exterior trim mounting structure.

[0032] In this way, it is beneficial to improve the strength and rigidity of the interior and exterior trim mounting structure.

[0033] In some embodiments, the interior and exterior trim mounting structure comprises a mounting boss comprising a mounting support surface for supporting the interior trim part and / or the exterior trim part.

[0034] In this way, the mounting support surface is beneficial to provide stable support for the interior trim part and / or the exterior trim part, facilitating the installation and fixation of the interior trim part and / or the exterior trim part.

[0035] In some embodiments, the interior and exterior trim mounting structure comprises a first mounting boss and a second mounting boss protruding towards the inside of the vehicle body, and the first mounting boss and the second mounting boss are arranged at intervals along the length direction of the frame beam body, and the reinforcing structure comprises a plurality of reinforcing ribs, part of the reinforcing ribs being arranged between the first mounting boss and the second mounting boss in the length direction.

[0036] In this way, the reinforcing ribs arranged between the first mounting boss and the second mounting boss can improve the strength and rigidity of the frame beam body and the interior and exterior trim mounting structure.

[0037] In some embodiments, the reinforcing structure further comprises a second reinforcing component, the second reinforcing component being tubular.

[0038] The further tubular reinforcing structure can effectively absorb impact energy, has high strength and rigidity, is easy to process and install, and is beneficial to improving the assembly efficiency of the vehicle body frame and shortening the manufacturing cycle of the vehicle.

[0039] In some embodiments, the vehicle body frame comprises a vehicle body pillar assembly, a side beam assembly, a roof cross beam assembly, and a door sill beam assembly; the frame beam body comprises a vehicle body pillar, a side beam, a roof cross beam, and a door sill beam; the frame beam body, the reinforcing structure, and the interior and exterior trim mounting structure jointly form at least part of the vehicle body pillar assembly and / or at least part of the side beam assembly and / or at least part of the roof cross beam assembly and / or at least part of the door sill beam assembly.

[0040] In this way, the strength and rigidity of the vehicle body pillar and / or the vehicle body beam member can be enhanced, the collision resistance of the vehicle body frame and the vehicle can be improved, and the overall lightweight degree of the vehicle body can be improved.

[0041] In some embodiments, along the front-rear direction of the vehicle body, the vehicle body pillar comprises at least one of a front pillar, a middle pillar, and a rear pillar; the vehicle body pillar assembly comprises at least one of a front pillar assembly, a middle pillar assembly, and a rear pillar assembly.

[0042] In this way, the above-mentioned structure can be applied to any one of the front pillar, the middle pillar, and the rear pillar, which is beneficial to improving the strength and rigidity of the entire vehicle body on the one hand, and reducing the weight of each vehicle body pillar and improving the overall lightweight degree of the vehicle body on the other hand.

[0043] In some embodiments, the roof cross beam comprises at least one of a roof front cross beam, a roof middle cross beam, and a roof rear cross beam, and the roof cross beam assembly comprises at least one of a roof front cross beam assembly, a roof middle cross beam assembly, and a roof rear cross beam assembly.

[0044] In this way, the strength of the roof front cross beam, the roof middle cross beam, or the roof rear cross beam can be enhanced, and the collision resistance of the vehicle body frame can be improved.

[0045] In some embodiments, the vehicle body pillar assembly comprises a front pillar assembly and / or a middle pillar assembly, and the vehicle body frame further comprises at least one metal connecting structure, the at least one metal connecting structure being arranged on the interior and exterior trim mounting structure, and the at least one metal connecting structure being used to connect at least one of a door hinge, a door lock, and a door opening limiter.

[0046] The metal connecting structure can reinforce the local structure of the vehicle body pillar assembly, improve the installation strength and installation reliability of the door hinge, the door lock, and the door opening limiter, and reduce the risk of deformation and tearing at the installation site.

[0047] In some embodiments, the vehicle body pillar assembly includes a rear pillar assembly and / or a center pillar assembly, the interior and exterior trim mounting structure includes at least one seat belt accessory mounting structure, the at least one seat belt accessory mounting structure is configured to mount a seat belt accessory, and the seat belt accessory includes at least one of a seat belt tensioner and a seat belt retractor.

[0048] In this way, the seat belt accessory can be mounted, and the seat belt accessory mounting structure is reinforced by the reinforcing structure, thereby facilitating improvement of the structural strength and the structural rigidity of the seat belt accessory mounting structure and reduction of the probability of seat belt failure caused by failure of the seat belt accessory mounting structure.

[0049] In some embodiments, the interior and exterior trim mounting structure includes at least one of a door switch assembly mounting structure, an exterior detection device mounting structure, an interior detection device mounting structure, an interior light mounting structure, a wire harness mounting structure, an interior panel mounting structure, and an exterior panel mounting structure.

[0050] In this way, various interior and exterior trim mounting structures can be integrated into the frame beam body, which not only enables reliable support of the interior and exterior trim, but also facilitates reduction of the number of components and simplification of the manufacturing process, thereby improving manufacturing efficiency.

[0051] In some embodiments, the frame beam body, the reinforcing structure, and the interior and exterior trim mounting structure form a roof rear cross beam assembly, the roof rear cross beam is formed with a first plate segment and a recessed groove connected to the first plate segment and recessed toward the outside of the vehicle body, the first plate segment is located rearward of the vehicle body relative to the recessed groove, and a portion of the recessed groove toward the outside of the vehicle body is configured to connect a roof panel.

[0052] In this way, this structure can meet the strength and rigidity requirements of the roof cross beam assembly in a roof crush test, can connect other structures of the vehicle body, and can be a molded integral part, thereby simplifying the preparation process of the vehicle body frame, shortening the preparation period of the vehicle body frame, and improving the integration of the vehicle body frame.

[0053] In some embodiments, the vehicle body frame further includes at least one metal connecting structure, the at least one metal connecting structure is arranged on the roof rear cross beam assembly, and the at least one metal connecting structure is configured to connect at least one of a door hinge and a door opening limiter.

[0054] In this way, the metal connecting structure can reinforce the local structure of the roof rear cross beam assembly, improve the mounting strength and mounting reliability of the door hinge, the door lock, and the door opening limiter, and reduce the risk of deformation and tearing at the mounting site.

[0055] In some embodiments, the interior and exterior trim mounting structure includes a first mounting boss and a second mounting boss protruding towards the inside of the vehicle body, the first mounting boss and the second mounting boss are arranged at intervals along the length direction of the frame beam body, and the metal connecting structure is connected to the support surface of the first mounting boss and the second mounting boss respectively, which faces the outside of the vehicle body.

[0056] Therefore, the metal connecting structure is beneficial to locally strengthen the interior and exterior trim mounting structure, and reduce the risk of deformation and tearing of the interior and exterior trim mounting structure.

[0057] In some embodiments, the vehicle further includes a chassis, the vehicle body frame is mounted to the chassis and forms a passenger compartment together, the vehicle body frame includes a vehicle body pillar assembly and a roof cross beam assembly, and the frame beam body, the reinforcing structure and the interior and exterior trim mounting structure jointly form at least part of the vehicle body pillar assembly and / or at least part of the roof cross beam assembly.

[0058] Therefore, the strength and rigidity of the vehicle body pillar and / or the roof cross beam assembly can be improved, and the lightweight degree of the vehicle can also be improved.

[0059] In some embodiments, the vehicle includes a vehicle body frame, a back door and a roof panel, the frame beam body, the reinforcing structure and the interior and exterior trim mounting structure jointly form a roof rear cross beam assembly, and the roof panel and the back door are connected to the roof rear cross beam assembly respectively.

[0060] Therefore, the strength and rigidity of the roof rear cross beam assembly can be improved.

[0061] In some embodiments, the roof panel includes a sunroof glass.

[0062] Therefore, the structure of the embodiments of the present application can be applied to various roof designs.

[0063] In some embodiments, the vehicle further includes a battery device, and the battery device is mounted to the chassis.

[0064] Therefore, on the one hand, the vehicle has excellent strength and rigidity performance and is lightweight, and on the other hand, the space utilization rate of the bottom of the vehicle can be improved, thereby avoiding occupying the space of the passenger compartment and the trunk, thereby providing more seating and storage space. Moreover, the battery device is mounted on the chassis, which can reduce the direct impact on the passengers and reduce the probability of danger to the passengers due to vehicle collision. In addition, the battery device is centrally mounted on the chassis, which is convenient for maintenance and replacement, and reduces the complexity of daily maintenance.

[0065] In some embodiments, the shell of the battery device forms at least part of the floor of the passenger compartment.

[0066] Therefore, the redundancy of the vehicle body frame can be reduced, thereby reducing the overall weight. Moreover, the packaging space of the battery module can also be increased, the internal layout of the vehicle is optimized, and the space utilization rate is improved.

[0067] In some embodiments, the vehicle body frame is detachably connected above the chassis.

[0068] Thus, the assembly process can be simplified, the production efficiency of the vehicle is improved, and the professional cooperation is facilitated.

[0069] The utility model discloses a vehicle. The frame beam main body of the vehicle is a first fiber reinforced composite material die pressing piece, and the reinforcing structure is a second fiber reinforced composite material injection molding piece. Thus, the lightweight degree of the vehicle body frame and even the vehicle body is improved, and the frame beam main body and the reinforcing structure are formed through die pressing and injection molding processes. The vehicle can be manufactured under the premise of meeting the strength and rigidity requirements, and the manufacturing process is simplified and the manufacturing period is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0070] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments, and are not meant to limit the scope of the present application. Furthermore, the same reference numerals are intended to denote the same components throughout the accompanying drawings. In the drawings:

[0071] Figure 1 A structural exploded schematic view of a vehicle is provided for some embodiments of the present application;

[0072] Figure 2 An exploded schematic view of a vehicle body is provided for some embodiments of the present application;

[0073] Figure 3 A structural schematic view of an electric vehicle is provided for some embodiments of the present application;

[0074] Figure 4 A perspective structural schematic view of a part of a vehicle body frame from one perspective is provided for some embodiments of the present application;

[0075] Figure 5 A perspective structural schematic view of a part of a vehicle body frame from another perspective is provided for some embodiments of the present application;

[0076] Figure 6 A sectional schematic view of a part of a vehicle body frame along the A-A line is provided for some embodiments of the present application; Figure 4

[0077] Figure 7 A perspective structural schematic view of a part of a vehicle body frame from yet another perspective is provided for some embodiments of the present application;

[0078] Figure 8 A flowchart of a manufacturing method of a vehicle is provided for some embodiments of the present application.

[0079] ​Reference Signs List

[0080] 1000 vehicle; 100 vehicle body; 200 battery device; 300 motor; 400 controller;

[0081] 10 vehicle body frame; 11 vehicle body covering; 20 passenger compartment; 30 chassis; 31 floor; 40 wheel;

[0082] 101 vehicle body pillar assembly; 1011 front pillar assembly; 1012 middle pillar assembly; 1013 rear pillar assembly; 102 roof cross beam assembly; 1021 front roof cross beam assembly; 1022 rear roof cross beam assembly; 103 side beam assembly; 104 rocker beam assembly; 111 hood; 112 side wing; 113 side door; 114 tailgate;

[0083] 1 frame beam body; 13 first plate segment; 131 first support surface; 132 second support surface; 14 recessed groove; 15 second plate segment; 16 third plate segment; 17 fourth plate segment; 19 rim;

[0084] 2 reinforcement structure; 20 cavity; 21 reinforcement assembly; 211 reinforcement rib; 2111 root;

[0085] 3 interior and exterior trim mounting structure; 31 mounting boss; 31a first mounting boss; 31b second mounting boss; 311 mounting support surface;

[0086] X vehicle body front-rear direction; Y vehicle body left-right direction; Z vehicle body up-down direction. DETAILED DESCRIPTION

[0087] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0088] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and the above drawings description of the present application are intended to cover not exclusive inclusion.

[0089] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like 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 "a plurality of" is two or more, unless otherwise explicitly specified.

[0090] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0091] In the description of the embodiments of the application, the term“and / or” is merely used to describe an associated relationship between associated objects, and indicates that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character“ / ” herein generally indicates that the front and rear associated objects are in an“or” relationship.

[0092] In the description of the embodiments of the application, the technical terms“length”,“width”,“thickness”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer”,“circumferential”, and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, be operated or used in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the application.

[0093] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical terms“mounting”,“connection”,“connection”,“fixing”, and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0094] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical term“contact” should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, and can be contact between two objects in contact without interaction force, or contact between two objects in contact with interaction force.

[0095] The embodiments of the application will be described in detail below.

[0096] With the development of vehicle technology, users have increasingly high requirements for lightweight of vehicle bodies. At the same time, manufacturers have increasingly strong demand for shortening the manufacturing cycle of vehicles. In addition, the vehicle body frame plays an important role in improving the overall stiffness and strength of the vehicle body.

[0097] In related technologies, at least a portion of the vehicle body frame (e.g., roof crossbeams) is made of steel structural components to meet the high strength and rigidity requirements of the vehicle body frame. There are also solutions that thicken the main body of the frame beams to improve the structural strength and / or rigidity of the vehicle body frame. However, steel vehicle body frames have the disadvantage of being heavy, which is not conducive to achieving overall vehicle weight reduction and improving the vehicle's range. Furthermore, the traditional manufacturing process of steel structure vehicle body frames involves multiple processes such as stamping, welding, and painting, resulting in problems such as low component integration, complex production processes, and long manufacturing cycles.

[0098] Therefore, how to improve the lightweighting of the vehicle body frame and the vehicle while simplifying the manufacturing process, while meeting the strength and stiffness requirements of the vehicle body frame, has become one of the research issues in the industry.

[0099] To address the aforementioned technical challenges, this application provides a vehicle.

[0100] Below, in conjunction with Figures 1 to 3 The vehicles and vehicles involved in the embodiments of this application will be described. Figure 1 Exploded view of the vehicle structure provided for some embodiments of this application; Figure 2 An exploded view of the vehicle body provided for some embodiments of this application; Figure 3 A schematic diagram of the structure of an electric vehicle provided for some embodiments of this application.

[0101] like Figure 1 As shown, the vehicle 1000 of this application embodiment includes a chassis 30 and a body 100 disposed on the chassis 30. The body 100 adopts at least part of the structure provided in this application embodiment.

[0102] The body 100 forms the exterior of the vehicle body and the passenger compartment 20, and protects the occupants located in the passenger compartment 20. The chassis 30 is located below the body 100 and carries the engine, battery pack, and other components. Wheels 40 are mounted on the chassis 30. Figure 1 The image shows a four-wheeled vehicle.

[0103] like Figure 2 As shown, the vehicle body 100 includes a body frame 10 and a body panel 11. The body frame 10 forms the vehicle skeleton, providing support and protection. The body panel 11 is connected to the body frame 10, forming an enclosed interior space and exterior. The body frame 10 is interconnected with the chassis 30. In some embodiments, the body frame 10 and the chassis 30 are welded together; in other embodiments, the body frame 10 and the chassis 30 are detachably connected by fasteners. Optionally, the fasteners may include at least one of bolts, studs, and screws. The number of fasteners can be multiple.

[0104] In some embodiments, the vehicle body frame 10 and the chassis 30 jointly enclose the passenger compartment 20 of the vehicle, which comprises a battery device 200 (see Figure 3 ), the housing of the battery device forms at least part of the floor 31 of the passenger compartment 20. By integrating the battery device into the chassis, additional supports and connections can be reduced, which helps to reduce the overall weight of the vehicle, and the occupation of the internal space of the vehicle by the battery device can be reduced.

[0105] For example, the vehicle body frame 10 is detachably connected to the chassis 30, for example, a plurality of bolts are used to detachably connect the periphery of the chassis 30 and the periphery of the vehicle body frame 10. In addition, the chassis 30 can be a skateboard chassis that integrates a motor system (including the motor 300 shown in Figure 3 ), a battery system (including the battery device 200 shown in Figure 3 ), and an electronic control system (including the controller 400 shown in Figure 3 ). It is also called "three-electric system". Through such a structure, the vehicle body frame 10 and the chassis 30 can be decoupled, and the vehicle body frame 10 can be replaced according to requirements, which shortens the development cycle and reduces costs. In other words, the integration of the chassis 30 is improved, and it can be adapted to various vehicle models.

[0106] The vehicle related to the embodiments of the present application can be a fuel or gas automobile or a new energy automobile, which can be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. The vehicle can also be a front-wheel drive vehicle, a rear-wheel drive vehicle or a four-wheel drive vehicle.

[0107] Hereinafter, the vehicle body frame 10 is taken as an example to illustrate the cooperation with the skateboard chassis.

[0108] As shown in Figure 1 and Figure 2 , the vehicle body frame 10 related to the embodiments of the present application at least includes a vehicle body pillar assembly 101, a roof beam assembly 102, a side beam assembly 103, a rocker beam assembly 104 and the like, and the vehicle body cover 11 at least includes a hood 111, a side wing plate 112, a side door 113, and can further include a tailgate 114, a bumper (not shown in the figure), a roof (not shown in the figure) and the like. The vehicle body pillar assembly 101 is a collective term for the front pillar assembly (also referred to as "A-pillar assembly") 1011, the center pillar assembly (also referred to as "B-pillar assembly") 1012 and the rear pillar assembly (also referred to as "C-pillar assembly") 1013, which can be understood as a collection of the front pillar assembly 1011, the center pillar assembly 1012 and the rear pillar assembly 1013, or at least any one of the front pillar assembly 1011, the center pillar assembly 1012 and the rear pillar assembly 1013 according to the context.

[0109] In some embodiments, the roof cross beam assembly 102 is supported by the left and right side beam assemblies 103 along the vehicle body width direction. A roof panel can also be provided above the roof cross beam assembly 102 (outside the vehicle body) to close the passenger compartment 20 from above. Part or all of the roof panel can be made of glass. In addition, part of the roof panel can also be configured to be slidable to open or close the sunroof.

[0110] In the vehicle body longitudinal direction, the roof cross beam assembly 102 can include a roof front cross beam assembly 1021 and a roof rear cross beam assembly 1022. The roof front cross beam assembly 1021 can be connected to the upper edge of the front windshield, and the roof rear cross beam assembly 1022 can be connected to the upper edge of the rear windshield. Optionally, some vehicle body frames 10 also include a roof middle cross beam assembly (not shown in the figure) located between the roof front cross beam assembly 1021 and the roof rear cross beam assembly 1022 in the vehicle body longitudinal direction.

[0111] The roof cross beam assembly 102 is used to support and protect the top of the vehicle, and needs to meet the structural strength and rigidity requirements.

[0112] The vehicle body 100 at least partially adopts the structure provided in the embodiments of the present application, which means that the structure provided in the embodiments of the present application can be selected to be applied to a part or several parts of the vehicle body 100 according to the actual situation of the vehicle. For example, the structure provided in the embodiments of the present application can be used for the roof cross beam assembly 102 described above. Optionally, it can also be used for the roof front cross beam assembly 1021 or the roof rear cross beam assembly 1022.

[0113] In some embodiments, the frame beam body 1 of the vehicle body frame 10 is made of fiber-reinforced composite material, which means that most of the structure of the frame beam body 1 is made of fiber-reinforced composite material.

[0114] Through research, it is found that the vehicle body frame can be made of fiber-reinforced composite material and supplemented by a reinforcing structure, so that the vehicle body frame can not only meet the strength and rigidity requirements, but also greatly reduce the weight compared with the steel vehicle body frame. Further, the vehicle body frame made of fiber-reinforced composite material can be made by molding or injection molding, which is conducive to simplifying the manufacturing process, improving production efficiency, and manufacturing complex vehicle body frames.

[0115] Based on such design concept, the embodiments of the present application provide a vehicle, which includes a vehicle body frame, the vehicle body frame comprising: a frame beam body having a first side and a second side arranged oppositely, the first side facing the inside of the vehicle body, and the second side facing the outside of the vehicle body; a reinforcing structure arranged at least on the first side and forming at least one cavity for reinforcing the strength of the frame beam body; wherein the frame beam body is a first fiber-reinforced composite material molding, and the reinforcing structure is a second fiber-reinforced composite material injection molding.

[0116] In this embodiment, since both the main frame beam and the reinforcing structure are made of fiber-reinforced composite materials, lightweight composite materials can replace steel, meeting the lightweight requirements of the vehicle body frame and the vehicle itself. Furthermore, the fiber-reinforced composite materials allow the vehicle body frame to be manufactured using molding and injection molding processes, simplifying the manufacturing process, reducing investment in manufacturing equipment and development costs, shortening the vehicle manufacturing cycle, and improving component integration. Because the reinforcing structure is located on the main frame beam, it improves the structural strength and stiffness of the main frame beam, meeting the strength and stiffness requirements of the vehicle body frame and reducing the probability of the vehicle body frame failing under external pressure. Therefore, in this embodiment, the vehicle body frame can achieve a higher degree of lightweighting while meeting strength and stiffness requirements.

[0117] Below, refer to Figures 1 to 7 The vehicle body frame provided in some embodiments of this application will be described in detail.

[0118] Figure 1 Exploded view of the vehicle structure provided for some embodiments of this application; Figure 2 An exploded view of the vehicle body provided for some embodiments of this application; Figure 3 Schematic diagrams of the structure of an electric vehicle provided for some embodiments of this application; Figure 4 A perspective view of a portion of a vehicle frame provided for some embodiments of this application; Figure 5 A perspective view of a portion of a vehicle frame provided for some embodiments of this application; Figure 6 Some embodiments of this application provide for the following: Figure 4 A sectional view diagram cut along line AA; Figure 7 A three-dimensional structural schematic diagram of a portion of a vehicle frame provided for some embodiments of this application.

[0119] In the description of the embodiments of this disclosure, for ease of explanation, the direction of arrow X represents the "front-to-back direction of the vehicle body" and the "length direction of the vehicle body," with arrow X pointing towards the front of the vehicle body; the direction of arrow Y represents the "left-to-right direction of the vehicle body" and the "width direction of the vehicle body," with arrow Y pointing towards the left side of the vehicle body (consistent with the left-to-right direction of the driver inside the vehicle); the direction of arrow Z represents the "vertical direction of the vehicle body" and the "height direction of the vehicle body," with arrow Z pointing towards the top of the vehicle body. Additionally, the side facing the passenger compartment 20 is sometimes referred to as the inner side of the vehicle body, and the side facing away from the passenger compartment 20 and towards the outside of the vehicle body is sometimes referred to as the outer side of the vehicle body.

[0120] like Figures 1 to 4As shown, the embodiment of the present application provides a vehicle, which comprises a vehicle body frame 10, the vehicle body frame 10 comprising a frame beam body 1 and a reinforcing structure 2. The frame beam body 1 has a first side and a second side arranged oppositely, the first side facing the inner side of the vehicle body, and the second side facing the outer side of the vehicle body. The reinforcing structure 2 is arranged at least on the first side and forms at least one cavity 20 for reinforcing the strength of the frame beam body 1. The frame beam body 1 is a first fiber-reinforced composite material molded part, and the reinforcing structure 2 is a second fiber-reinforced composite material injection molded part.

[0121] In some embodiments, as shown in Figure 1 and Figure 4 , the frame beam body 1 comprises two opposite sides, one side facing the inner side of the vehicle body, and the other side facing the outer side of the vehicle body. For the convenience of description, one side of the frame beam body 1 is named as "first side", and the other side of the frame beam body 1 is named as "second side". According to the installation direction of the frame beam body 1 on the vehicle body, the first side faces the inner side of the vehicle body, and the second side faces the outer side of the vehicle body.

[0122] In some embodiments, as shown in Figure 1 and Figure 4 , Figure 5 , the reinforcing structure 2 is arranged at least on the first side of the frame beam body 1 for reinforcing the strength of the frame beam body 1. The reinforcing structure 2 can be a reinforcing rib 211 or a tubular reinforcing structure, which can be a circular tube, a generally square tube, or other irregular shapes, etc. The reinforcing rib 211 is shown in the figure.

[0123] In some embodiments, as shown in Figure 4 , Figure 5 , the reinforcing structure 2 can have at least one cavity 20, one end of the cavity 20 can be closed by the frame beam body 1, and the other end of the cavity 20 can also be closed. The number of cavities 20 can be multiple, and optionally, the reinforcing structure 2 forms one, two, three or more cavities 20.

[0124] Optionally, the cross section of the cavity 20 can be circular, rectangular or other shapes, etc. In a specific embodiment, the cavity 20 is generally rectangular. Among the multiple cavities 20, the shape / size of each cavity 20 can be partially the same, partially different, or all the same (including generally the same) or all different.

[0125] In some embodiments, the inner side of the frame beam body 1 can also cover an interior trim panel, and the outer side of the frame beam body 1 can also cover an outer panel of the vehicle body.

[0126] In some embodiments, the frame beam body 1 is formed by molding a fiber-reinforced composite material, and the reinforcing structure 2 is formed by injection molding a fiber-reinforced composite material. For the convenience of description, the material of the frame beam body 1 is referred to as a "first fiber-reinforced composite material", and the material of the reinforcing structure 2 is referred to as a "second fiber-reinforced composite material". The first fiber-reinforced composite material and the second fiber-reinforced composite material can be the same or different, provided that the strength, rigidity and manufacturing method can be met; in different cases, the matrix of the composite material can be different, or the fiber content can be different.

[0127] In some embodiments, the frame beam body 1 and the reinforcing structure 2 are connected into an integrated structure. Alternatively, the frame beam body 1 formed by molding and the reinforcing structure 2 formed by injection molding are connected by bonding or other connection methods, or the frame beam body 1 and the reinforcing structure 2 are integrally formed by molding and injection molding, thereby further simplifying the manufacturing process of the vehicle body frame 10 and further improving the part integration of the vehicle body frame 10. In addition, since injection molding can form a relatively complex structure, it is beneficial to flexibly design the reinforcing structure 2.

[0128] In the embodiments of the present application, since the frame beam body 1 and the reinforcing structure 2 are both made of fiber-reinforced composite materials, on the one hand, the lightweight composite material can replace steel to meet the lightweight demand of the vehicle body frame 10, and on the other hand, the fiber-reinforced composite material enables the vehicle body frame 10 to be manufactured by molding and injection molding, thereby simplifying the manufacturing process of the vehicle body frame 10, reducing the manufacturing equipment investment and development cost, shortening the manufacturing cycle of the vehicle body frame 10, and improving the part integration. Since the reinforcing structure 2 is arranged on the frame beam body 1 and forms the cavity 20, the structural strength and rigidity (especially the bending rigidity and torsional rigidity) and the modal of the frame beam body 1 can be improved, thereby meeting the strength and rigidity requirements of the vehicle body frame 10 and reducing the probability of failure of the vehicle body frame 10 resisting external pressure. Therefore, the vehicle body frame 10 of the embodiments of the present application can improve the lightweight degree of the vehicle body, simplify the manufacturing process and shorten the manufacturing cycle while meeting the strength and rigidity requirements.

[0129] In some embodiments, the first fiber-reinforced composite material includes a glass fiber-reinforced composite material, and / or the second fiber-reinforced composite material includes a glass fiber-reinforced composite material, and the glass fiber-reinforced composite material includes a thermoplastic resin matrix and continuous fibers, and the continuous fibers include glass fibers.

[0130] In some embodiments, the thermoplastic resin matrix can be a polypropylene (PP) resin matrix, or any one or a combination of PA610, PA11, PA12, PA1212, PA1012 and PA1313.

[0131] In some embodiments, the glass fiber reinforced composite material comprises a glass fiber reinforced polypropylene composite material.

[0132] The glass fiber reinforced polypropylene composite material can be a polypropylene (PP) based resin reinforced by glass fibers.

[0133] The weight fraction of the glass fibers can be in the range of 30 to 80. Generally, the lower the weight fraction of the glass fibers, the better the flowability of the composite material, which is beneficial for injection molding. The higher the weight fraction of the glass fibers, the lower the flowability of the composite material, but the mechanical properties of the polypropylene material can be enhanced, the strength and rigidity of the material can be improved, and the thermal stability and dimensional stability of the material can also be improved. The first fiber reinforced composite material and the second fiber reinforced composite material can respectively use materials with different weight fractions of glass fibers.

[0134] Since the glass fiber reinforced polypropylene composite material has high strength and rigidity, anti-creep property, and good dimensional stability, the structural strength and rigidity of the vehicle body frame 10 can be further improved, and the vehicle body frame 10 can be less likely to deform even in a high-temperature environment.

[0135] In some embodiments, the weight fraction of the glass fibers in the first fiber reinforced composite material is higher than or equal to the weight fraction of the glass fibers in the second fiber reinforced composite material.

[0136] Thus, when manufacturing the reinforcing structure 2, the flowability of the second fiber reinforced composite material can be appropriately improved by adjusting the weight fraction of the glass fibers, which is more conducive to the injection molding of the reinforcing structure 2. Alternatively, the mechanical strength and rigidity of the first fiber reinforced composite material can be improved by adjusting the weight fraction of the glass fibers.

[0137] In some embodiments, the weight fraction of the glass fibers in the first fiber reinforced composite material is greater than or equal to 60 and less than or equal to 80, the weight fraction of the thermoplastic resin matrix is greater than or equal to 20 and less than or equal to 40, and the sum of the weight fraction of the glass fibers and the weight fraction of the thermoplastic resin matrix is 100.

[0138] For example, the weight fraction of the glass fibers in the first fiber reinforced composite material is 60, 65, 70, 75, 80, or a value between any two of the values, and the weight fraction of the thermoplastic resin matrix in the first fiber reinforced composite material is 20, 25, 30, 35, 40, or a value between any two of the values.

[0139] Alternatively, the weight fraction of the glass fibers in the first fiber reinforced composite material is greater than or equal to 68 and less than or equal to 72.

[0140] By controlling the weight fraction of the glass fiber and the weight fraction of the thermoplastic resin matrix in the first fiber-reinforced composite material within the above ranges, the molding of the frame beam body 1 is facilitated, and the strength, rigidity, and processing convenience of the frame beam body 1 can be balanced.

[0141] In some embodiments, the weight fraction of the glass fiber in the second fiber-reinforced composite material is greater than or equal to 30 and less than or equal to 50, the weight fraction of the thermoplastic resin matrix is greater than or equal to 50 and less than or equal to 70, and the sum of the weight fraction of the glass fiber and the weight fraction of the thermoplastic resin matrix is 100.

[0142] For example, the weight fraction of the glass fiber in the second fiber-reinforced composite material is 30, 32, 35, 37, 40, 42, 45, 47, 50, or a value between any two of the values, and the weight fraction of the thermoplastic resin matrix in the second fiber-reinforced composite material is 50, 52, 55, 57, 60, 62, 65, 67, 70, or a value between any two of the values.

[0143] Alternatively, the weight fraction of the glass fiber in the second fiber-reinforced composite material is greater than or equal to 38 and less than or equal to 42.

[0144] By controlling the weight fraction of the glass fiber and the weight fraction of the thermoplastic resin matrix in the second fiber-reinforced composite material within the above ranges, the flowability of the second fiber-reinforced composite material is improved, the injection molding of the reinforcing structure 2 is facilitated, and the strength, rigidity, and processing convenience of the reinforcing structure 2 can be balanced.

[0145] In a specific embodiment, the frame beam body 1 uses a fiber-reinforced polypropylene composite material with a weight fraction of glass fiber of 70 (which can be represented as PP+GF70), and the reinforcing structure 2 uses a fiber-reinforced polypropylene composite material with a weight fraction of glass fiber of 40 (which can be represented as PP+GF40). In a comparative test on a roof rear beam assembly 1022 suitable for the same vehicle model, the roof front beam assembly 1022 using the fiber-reinforced composite material of the present application can achieve a weight reduction efficiency of up to 42% relative to a conventional steel roof front beam assembly, significantly improving the lightweight degree of the roof rear beam assembly 1022 and thus the vehicle body frame 10.

[0146] In the glass fiber-reinforced polypropylene composite material, in addition to the thermoplastic resin matrix and the glass fiber, an auxiliary agent can also be included.

[0147] The auxiliary agent is an additive for improving and optimizing the performance of the composite material, and the auxiliary agent can include any one or a mixture of any multiple of a compatibilizer, an antioxidant, and a flame retardant. The compatibilizer is used to improve the interfacial adhesion between the resin matrix and the long glass fiber, and to improve the mechanical properties of the composite material, for example, it can be a maleic anhydride grafted compatibilizer, etc. The antioxidant can prevent or delay the oxidation and degradation of the material, reduce the possibility of degradation of the composite material due to high temperature oxidation during processing, and prolong the service life of the composite material, for example, it can be a hindered amine antioxidant, a phosphite antioxidant, etc. The flame retardant is used to improve the flame retardant performance of the composite material, for example, it can be a halogen-based flame retardant.

[0148] In addition, the weight fraction of the auxiliary agent in the first fiber-reinforced composite material and the second fiber-reinforced composite material can be the same or different.

[0149] By controlling the weight fraction of the auxiliary agent in the glass fiber-reinforced composite material within the above range, the processing performance of the continuous fiber and the thermoplastic resin matrix can be improved by adding the auxiliary agent, which helps to improve the final performance of the composite material.

[0150] In some embodiments, the auxiliary agent includes greater than or equal to 1 and less than or equal to 5 parts by weight of a compatibilizer and greater than or equal to 0.2 and less than or equal to 0.6 parts by weight of an antioxidant. For example, the weight fraction of the compatibilizer in the auxiliary agent is 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, or a value between any two values, and the weight fraction of the antioxidant in the auxiliary agent is 0.2, 0.3, 0.4, 0.5, 0.6, or a value between any two values.

[0151] In some embodiments, the compatibilizer includes any one or a combination of two or more of POE-g-MAH, SBS-g-MAH, SEBS-g-MAH, EPDM-g-MAH, ABS-g-MAH, ASA-g-MAH, LDPE-g-MAH, LLDPE-g-MAH, UHMWPE-g-MAH, SAN-g-MAH, and PP-GMA.

[0152] The antioxidant includes one or a combination of antioxidant 1098 and antioxidant PEP-36.

[0153] In the above technical solution, antioxidant 1098, also known as N,N'-hexamethylene bis(3,5-di-tert-butyl-4-hydroxyphenylpropionamide), is a phenolic antioxidant, and antioxidant PEP-36, also known as tris[2.4-di-tert-butylphenyl] phosphite, can be used in combination with a phenolic antioxidant.

[0154] By selecting the maleic anhydride grafted compatibilizer and the acrylic compatibilizer, the interfacial bonding performance between the continuous fibers and the thermoplastic resin matrix can be improved, and the mechanical properties of the composite material can be improved. The antioxidant can reduce the possibility of degradation of the composite material due to high temperature oxidation during processing, and prolong the service life of the composite material. By adding compatibilizers and antioxidants to the continuous fibers and the thermoplastic resin matrix, the mechanical properties and service life of the vehicle body frame 10 can be improved.

[0155] In some embodiments, the frame beam body 1 (first fiber reinforced composite material) includes a plurality of layers of glass fiber reinforced composite material, each layer of glass fiber reinforced composite material including continuous fibers and a thermoplastic resin matrix connecting the glass fibers, and the water absorption of each layer of glass fiber reinforced composite material is not higher than 0.3%.

[0156] For example, the water absorption of each layer of glass fiber reinforced composite material is 0.3%, 0.25%, 0.2%, 0.15%, 0.1%, 0.05%, 0.01%, or a value between any two values.

[0157] By controlling the water absorption of each layer of glass fiber reinforced composite material within the above range, the water absorption of the frame beam body 1 is in a lower range, thereby reducing the deformation of the frame beam body 1 caused by excessive water absorption.

[0158] In some embodiments, in the plurality of layers of continuous fiber composite material, the performance of at least one layer of continuous fiber composite material satisfies the following three at the same time:

[0159] The elastic modulus is not less than 20Gpa, the tensile strength is not less than 900MPa, and the elongation at break is not less than 3%. By limiting the performance of the single layer of continuous fiber composite material, the continuous fiber composite material formed by the plurality of layers of continuous fiber composite material can at least meet the performance requirements of the frame beam body 21 of the vehicle.

[0160] The number of layers of continuous fiber composite material and the number of layers of continuous fiber composite material that meet the performance requirements of elastic modulus not less than 20Gpa, tensile strength not less than 900MPa, and elongation at break not less than 3% can be designed according to the specific position of the frame beam body 21 in the vehicle. It can be that all the plurality of layers of continuous fiber composite material of the fiber composite plate meet, or one or several layers meet.

[0161] In some embodiments, in the multi-layer continuous fiber composite material layer, the performance of at least one layer of the continuous fiber composite material layer satisfies the following three conditions: the elastic modulus is 20 GPa to 50 GPa, the tensile strength is 900 MPa to 1300 MPa, and the elongation at break is not less than 3%. That is, 20 GPa≤elastic modulus of the continuous fiber composite material layer≤50 GPa, 900 MPa≤tensile strength of the continuous fiber composite material layer≤1300 MPa, and 3%≤elongation at break of the continuous fiber composite material layer≤6%. Thus, the range of the elastic modulus, the tensile strength and the elongation at break of the continuous fiber composite material layer is further limited. In some embodiments, the elastic modulus of each layer of the continuous fiber composite material layer is not less than 34 GPa, the tensile strength of each layer of the continuous fiber composite material layer is not less than 918 MPa, and the elongation at break of each layer of the continuous fiber composite material layer is not less than 3%. In this way, the performance of the continuous fiber composite material layer is further improved, so that the frame beam body 21 made of the continuous fiber composite material can be applied to positions with higher vehicle crash performance requirements.

[0162] In some embodiments, the elastic modulus of each layer of the continuous fiber composite material layer is 34 GPa to 40 GPa, the tensile strength of each layer of the continuous fiber composite material layer is 918 MPa to 1300 MPa, and the elongation at break of each layer of the continuous fiber composite material layer is 3% to 6%.

[0163] That is, 34 GPa≤elastic modulus of the continuous fiber composite material layer≤40 GPa, 918 MPa≤tensile strength of the continuous fiber composite material layer≤1300 MPa, and 3%≤elongation at break of the continuous fiber composite material layer≤6%. Thus, the range of the elastic modulus and the tensile strength of the continuous fiber composite material layer is further limited.

[0164] In some embodiments, the continuous fibers in the first fiber-reinforced composite material are glass fibers, and the thermoplastic resin matrix is polypropylene. The melt index of the polypropylene is not less than 30 g / 10 min and not more than 100 g / 10 min. In addition, the elongation at break of the polypropylene is not less than 50% and not more than 200%. The composite material formed by the combination of the continuous glass fibers and the polypropylene has the characteristics of high strength and high modulus of the continuous glass fibers and the good processability and recyclability of the polypropylene, which helps to improve the tensile strength and the elongation at break of each layer of the continuous fiber composite material layer, and the polypropylene is easy to form.

[0165] Table 1 provides experimental data of the continuous fiber composite material layer (the first fiber-reinforced composite material layer) including glass fibers and a polypropylene resin matrix according to the embodiments of the present application.

[0166] Example 1 Example 2 PP-1 35 30 Glass fibres 65 70 Compatibiliser 2 2 RIANOX 1010 0.1 0.1 RIANOX 168 0.2 0.2 Tensile strength (MPa) 1024 1180 Elongation at break (%) 3.6 3.3 Elastic modulus (GPa) 34.7 35.5

[0167] PP-1 refers to polypropylene with trade name ADXP770, melt index greater than 40, elongation at break greater than 100.

[0168] Compatibilizer: the material of PP-1 adopts high melt index PP grafted maleic anhydride.

[0169] Glass fiber refers to continuous glass fiber with trade name E7DR17-1200-352C (China Jushi Co., Ltd.).

[0170] Antioxidant: RIANOX 1010, RIANOX 168 (Tianjin Li'anlong New Material Co., Ltd.).

[0171] Table 2 is the ingredients and experimental data of some comparative examples.

[0172]

[0173]

[0174] PP-2 refers to polypropylene with trade name PP 7032E3, melt index 5, elongation at break > 100.

[0175] Compatibilizer: the material of PP-2 adopts high melt index PP grafted maleic anhydride.

[0176] Glass fiber refers to continuous glass fiber with trade name E7DR17-1200-352C (China Jushi Co., Ltd.).

[0177] Antioxidant: RIANOX 1010, RIANOX 168 (Tianjin Li'anlong New Material Co., Ltd.).

[0178] According to Table 1 and Table 2, the weight parts of glass fiber in Example 1 and Example 2 are 65, 70, in the range of 60-80. The weight parts of polypropylene in Example 1 and Example 2 are 35, 30, in the range of 20-40. The weight parts of compatibilizer are 2, and the weight parts of antioxidant are 0.3. The tensile strength of the produced continuous fiber composite layer (glass fiber reinforced composite layer) is 1024 MPa, 1180 MPa, the elongation at break is 3.6%, 3.3%, and the elastic modulus is 34.7 GPa, 35.5 GPa. All meet the performance requirements for continuous fiber composite layer.

[0179] It can be found from Example 1 and Comparative Example 1 that when the melt index of polypropylene is less than 30 g / 10 min, the tensile strength and elongation at break of the produced continuous fiber composite layer (glass fiber reinforced composite layer) cannot meet the performance requirements.

[0180] As can be seen from the comparative example 2, when the sum of the weight parts of the polypropylene and the glass fiber is less than 100, the tensile strength and the elongation at break of the continuous fiber composite layer produced cannot meet the performance requirements.

[0181] In some embodiments, the frame beam body 1 comprises a plurality of glass fiber reinforced composite layers, the glass fibers of each glass fiber reinforced composite layer are laid in one direction, and the laying angles of the continuous fibers of the adjacent two glass fiber reinforced composite layers are different.

[0182] Thus, the laying angles of the continuous fibers of the adjacent two glass fiber reinforced composite layers are different, which helps to optimize the performance of the composite material in different directions.

[0183] In some embodiments, at least one of the outermost two glass fiber reinforced composite layers on either side of the frame beam body 1 in the thickness direction has a laying angle of the glass fibers that is neither 0° nor 90°.

[0184] 0° refers to the length extension direction of the component, and 90° refers to the width direction of the component. Among them, 0° and 90° are perpendicular to each other. The laying angles of the continuous fibers of the remaining continuous fiber composite layers are all based on the direction in which the 0° layer is located. For example, the laying angle of the continuous fibers is 45°, which means that the laying direction of the continuous fibers is 45° to the 0° direction.

[0185] Thus, the non-0° and non-90° layers can provide strength in multiple directions, and at least one of the outermost two layers can effectively absorb and disperse energy, reducing damage to the internal structure caused by external impact. Such arrangement helps to enhance the impact resistance of the frame beam body 1.

[0186] In some embodiments, the laying angle of the glass fibers of the non-0° and non-90° glass fiber reinforced composite material is 25°-75°.

[0187] For example, the laying angle of the glass fibers of the non-0° and non-90° glass fiber reinforced composite material is 25°, 35°, 45°, 55°, 65°, 75°, or any value between any two values.

[0188] The laying angle of the glass fibers of the non-0° and non-90° glass fiber reinforced composite material in the above range is beneficial to enhance the multidirectional strength, shear strength and fatigue resistance of the composite material.

[0189] In some embodiments, the sum of the number of layers of the non-0° and non-90° glass fiber reinforced composite material is 20%-40% of the total number of layers of the glass fiber reinforced composite material.

[0190] For example, the sum of the layers of the glass fiber reinforced composite material with the laying angle of the glass fiber being non-0° and non-90° is 20%, 25%, 30%, 35%, 40% or a value between any two of the total layers of the glass fiber reinforced composite material.

[0191] Therefore, it is beneficial to make the multidirectional strength, shear strength and fatigue resistance of the composite material as much as possible within a reasonable range of values, thereby optimizing the structural strength and structural stiffness of the frame beam body 1.

[0192] In some embodiments, the thickness of the frame beam body 1 is 1.2mm-5mm.

[0193] Further, the thickness of the single-layer glass fiber reinforced composite material can also be 0.2mm-0.3mm.

[0194] For example, the thickness of the frame beam body 1 is 1.2mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm or a value between any two of the values, and / or the thickness of the single-layer glass fiber reinforced composite material is 0.2mm, 0.22mm, 0.25mm, 0.27mm, 0.3mm or a value between any two of the values.

[0195] The thickness of the frame beam body 1 and / or the thickness of the single-layer glass fiber reinforced composite material within the above range is beneficial to avoid the thickness of the frame beam body 1 being too low to meet the requirements of structural strength and structural stiffness as much as possible. By limiting the maximum thickness of the frame beam body 1, it is beneficial to avoid the thickness of the frame beam body 1 being too high to affect the aesthetic performance of the vehicle or to interfere with the installation of other parts of the vehicle, etc. By limiting the range of the thickness of the single-layer continuous fiber composite material layer, on the one hand, it is beneficial to avoid the thickness of the single-layer continuous fiber composite material layer being too low to cause insufficient structural strength and structural stiffness of the single-layer continuous fiber composite material, and on the other hand, it is beneficial to avoid the thickness of the continuous fiber composite material layer being too large to cause the thickness of the frame beam body 1 to be too high when the multi-layer continuous fiber composite layer is laid.

[0196] Next, the structure of the vehicle body frame 10 will be further described.

[0197] In some embodiments, as shown in Figures 4 to 7 The reinforcing structure 2 includes a first reinforcing assembly, the first reinforcing assembly includes a plurality of reinforcing ribs 211, at least part of the plurality of reinforcing ribs 211 are arranged in a mesh shape in a staggered manner, the cavity 20 is formed at least at the position of the mesh, and / or the plurality of reinforcing ribs 211 are connected end to end in a cylindrical shape, and the inner cavity of the cylinder constitutes the cavity 20.

[0198] In some embodiments, the first reinforcing component has an elastic modulus ≥ 5 GPa, a tensile strength ≥ 100 MPa, and an elongation at break ≥ 1%.

[0199] Optionally, at least some of the plurality of reinforcing ribs 211 can be arranged in a mesh shape by being staggered with each other. As shown in Figure 4 Optionally, the plurality of reinforcing ribs 211 can be arranged in a mesh shape by being staggered with each other. As shown in Figures 4 to 7 In the specific embodiment shown, the reinforcing ribs 211 are mainly arranged in a mesh shape by being staggered with each other.

[0200] Thus, the reinforcing ribs 211 arranged in a mesh shape by being staggered with each other and / or the plurality of reinforcing ribs arranged in a cylinder shape can form a lattice-shaped cavity or a cylindrical cavity, which is beneficial to the injection molding of the reinforcing structure 2 and the strength and rigidity of the vehicle body frame 10, in particular, the torsional rigidity and the bending rigidity.

[0201] In some embodiments, as shown in Figures 4 to 7 The cavity 20 is enclosed by the reinforcing ribs 211 and the frame beam body 1.

[0202] As shown in the specific embodiment, the reinforcing ribs 211 are connected to the frame beam body 1, and thus, the reinforcing ribs 211 and the frame beam body 1 connected thereto can jointly enclose a cavity 20. As shown in the specific embodiment, Figure 5 The cavity 20 enclosed by the frame beam body 1 and the reinforcing ribs 211 is shown in

[0203] Thus, the reinforcing ribs 211 can improve the strength of the frame beam body 1, and thus, the strength and rigidity of the vehicle body frame 10 as a whole.

[0204] In some embodiments, the thickness of the root of the reinforcing rib 211 is 2.5 mm to 3.5 mm, and the thickness of the frame beam body 1 is 2.5 mm to 3.5 mm.

[0205] The thickness of the reinforcing rib refers to the dimension in the thickness direction of the reinforcing rib. As shown in the specific embodiment, when the reinforcing rib is formed in a sheet shape, the thickness of the sheet is referred to. As shown in Figure 5 and Figure 6 The root of the reinforcing rib refers to the end connected to the frame beam body 1 in the reinforcing rib 211.

[0206] For example, the thickness of the root of the reinforcing rib 211 is 2.5mm, 2.7mm, 3mm, 3.2mm, 3.5mm or any two values, and the thickness of the frame beam body 1 is 2.5mm, 2.7mm, 3mm, 3.2mm, 3.5mm or any two values.

[0207] The thickness of the root of the reinforcing rib 211 and the thickness of the frame beam body 1 are within the above range. By arranging the reinforcing rib 211 on the frame beam body 1, the strength and rigidity of the frame beam body 1 can be strengthened, and the lightweight of the vehicle frame 10 can also be taken into account.

[0208] In some embodiments, the reinforcing rib 211 is directly connected to the frame beam body 1 by injection molding, and is integrally formed with the frame beam body 1. For example, after the frame beam body 1 is molded using a compression molding die, the reinforcing rib 211 is directly injection molded onto the frame beam body 1 using an injection mold to form an integral structural component; or, the frame beam body 1 is molded using a compression molding die, and the reinforcing rib 211 is injection molded using an injection mold, and then the two are bonded together.

[0209] In some embodiments, such as Figures 4 to 7 As shown, the plurality of reinforcing ribs 211 include reinforcing ribs 211 arranged at intervals, and the spacing between adjacent reinforcing ribs 211 is in the range of 20mm to 50mm.

[0210] Figure 4 The diagram shows the spacing between two reinforcing ribs 211 spaced apart along the width of the vehicle body, with M1 and M2 representing the distance between adjacent reinforcing ribs 211 at different locations. Figure 4 In the specific embodiment shown, M1 is greater than M2.

[0211] For example, the spacing between adjacent reinforcing ribs 211 can be 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm or any value between two values.

[0212] The spacing between the stiffeners 211 can be the same or different. Optionally, multiple stiffeners 211 can form a grid, with most of the grid openings being roughly the same, but there are also cases where the grid openings vary significantly, such as near the bending parts of the frame beam 1.

[0213] The spacing between adjacent reinforcing ribs 211 is within the above range, which is beneficial to improving the strength and rigidity of the frame beam body 1 and also to making the vehicle body frame 10 lighter.

[0214] In some embodiments, the length of each stiffener 211 extending from the frame beam body 1 in a direction away from the frame beam body 1 is between 5 mm and 40 mm.

[0215] For example, the length of each reinforcing rib 211 extending from the frame beam body 1 away from the frame beam body 1 is 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm or any value between two of these.

[0216] The length of each stiffener 211 extending from the main frame beam 1 away from the main frame beam 1 can be considered as the height H of each stiffener 211. The height of the stiffener 211 may not be consistent at different locations, but it is within the range of 5mm to 40mm.

[0217] Figure 6 The diagram shows the heights of two locations of one of the reinforcing ribs 211, denoted by H1 and H2, where H1 is greater than H2. Of course, the height of the reinforcing rib 211 is not limited to... Figure 6 The heights of H1 and H2 and their height relationships are shown. Optionally, among the multiple reinforcing ribs 211 arranged in a grid pattern, the reinforcing ribs 211 that can form a grid have the same height.

[0218] The length of each reinforcing rib 211 extending from the frame beam body 1 in a direction away from the frame beam body 1 is within the above range, which is beneficial to improve the strength and rigidity of the frame beam body 1 while reducing the outer contour size of the vehicle body frame 10 and reducing the space occupied by the vehicle body frame 10.

[0219] In some embodiments, such as Figure 4 and Figure 5 As shown, a plurality of reinforcing ribs 211 are erected relative to the frame beam body 1, and include a first direction reinforcing rib extending along the length direction of the frame beam body 1 and a second direction reinforcing rib extending along a second direction intersecting the length direction.

[0220] like Figure 4 and Figure 5 As shown, multiple reinforcing ribs 211 extend and intersect mainly along a first direction and a second direction. The first direction is generally consistent with the length direction of the frame beam body 1, and the second direction intersects the length direction. In some specific embodiments, the second direction is generally consistent with the width direction of the frame beam body 1. When the frame beam body 1 is configured as a roof crossbeam, the first direction can be consistent with the width direction of the vehicle body, and the second direction can be consistent with the front-rear direction of the vehicle body.

[0221] This helps to improve the overall strength and rigidity of the vehicle body frame 10, enabling it to disperse and resist the torsional and lateral forces experienced during vehicle collisions or rollovers, thereby improving the vehicle's torsional and bending resistance.

[0222] In some embodiments, as shown in Figures 4 to 6 , the reinforcing structure 2 comprises a first reinforcing assembly comprising a plurality of reinforcing ribs 211, at least some of the reinforcing ribs 211 are arranged in a mesh shape in an interlaced manner, the cavities 20 are formed at least at positions of the mesh, the frame beam body 1 is formed with a first plate segment 13 and a recessed groove 14 connected to the first plate segment 13 and recessed towards the outside of the vehicle body, the mesh formed by the reinforcing ribs 211 formed in the recessed groove 14 is larger than the mesh formed by the reinforcing ribs 211 formed in the first plate segment 13.

[0223] As shown in Figures 4 to 6 , the frame beam body 1 is formed with a recessed groove 14. The recessed groove 14 can be formed by recessing one part of the frame beam body 1 relative to another part. In combination with Figure 1 , the recessed groove 14 is formed recessed towards the outside of the vehicle body. The recessed groove 14 is open towards the inside of the vehicle body.

[0224] An end edge of one side wall of the recessed groove 14 is connected to the first plate segment 13. The first plate segment 13 extends along the width direction of the vehicle body and the front-rear direction of the vehicle body, and an end edge of the first plate segment 13 away from the recessed groove 14 along the front-rear direction of the vehicle body can also be connected with a rim 19, which can be a plate segment bent outwards of the vehicle body relative to the first plate segment 13.

[0225] Along the front-rear direction of the vehicle body, the overall width of the recessed groove 14 is larger than the width of the first plate segment 13. In order to form a mesh-shaped reinforcing assembly with a certain density to provide sufficient strength and rigidity while taking into account the weight of the parts, the spacing of the reinforcing ribs 211 formed in the first plate segment 13 is smaller than the spacing of the reinforcing ribs 211 formed in the recessed groove 14, as Figure 4 illustratively shown, M2 is smaller than M1, whereby the mesh formed by the reinforcing ribs 211 formed in the recessed groove 14 is larger than the mesh formed by the reinforcing ribs 211 formed in the first plate segment 13. Each mesh can be regarded as an opening of each cavity 20. In addition, as Figure 6 shown, the height of the reinforcing ribs 211 formed in the first plate segment 13 can be smaller than the height of the reinforcing ribs 211 formed in the recessed groove 14, so as to be able to take into account the strength, rigidity and the size of the space occupied.

[0226] Since the first plate segment 13 has higher requirements for the modal, rigidity and strength of the vehicle body, by making the mesh formed by the reinforcing ribs 211 formed in the first plate segment 13 smaller than the mesh formed by the reinforcing ribs 211 formed in the recessed groove 14, on the one hand, it is beneficial to improve the strength and rigidity of the first plate segment 13, especially the bending rigidity and torsional rigidity, and on the other hand, it is possible to relatively improve the lightweight degree of the overall vehicle body frame 10, and overall, the strength, rigidity and lightweight degree of the vehicle body frame 10 are taken into account.

[0227] In some embodiments, as shown in Figures 4 to 6 Fig. 2, the recessed groove 14 includes, in order along the front-rear direction of the vehicle body, a second plate section 15, a third plate section 16, and a fourth plate section 17, wherein the second plate section 15 and the fourth plate section 17 constitute the groove side walls of the recessed groove 14, and the third plate section 16 constitutes the groove bottom wall of the recessed groove 14, and the reinforcing ribs 211 formed in the recessed groove 14 are connected to the second plate section 15, the third plate section 16, and the fourth plate section 17, respectively.

[0228] The second plate section 15, the third plate section 16, and the fourth plate section 17 are connected in order and the adjacent plate sections are at a certain angle, for example, substantially 90 degrees. In combination Figure 1 , the third plate section 16 is located closest to the outer side of the vehicle body among the first plate section 13, the second plate section 15, the third plate section 16, and the fourth plate section 17. One end of the second plate section 15 is connected to the third plate section 16, and the other end is connected to the first plate section 13. The second plate section 15 is set up at a different height relative to the third plate section 16 than the fourth plate section 17, although this is not necessarily the case and can be the same.

[0229] The reinforcing ribs 211 are provided in the recessed groove 14, and these reinforcing ribs 211 are connected to at least the third plate section 16, and can also be connected to the second plate section 15 and the fourth plate section 17 at positions close to these plate sections.

[0230] In this way, it is possible to improve the strength and rigidity of the vehicle body frame 10 while also improving the connection strength of the reinforcing ribs 211 to the frame beam body 1.

[0231] In some embodiments, as shown in Figure 1 , the frame beam body 1 forms a roof rear cross beam, the second plate section 15 is closer to the rear side of the vehicle body than the fourth plate section 17, and the first plate section 13 is closer to the rear side of the vehicle body than the second plate section 15.

[0232] In some embodiments, as shown in Figure 1 and Figure 4 , Figure 5 , the vehicle body frame 10 further includes an interior and exterior trim mounting structure 3 connected to the reinforcing structure 2 for mounting at least one of an interior trim member, an exterior trim member, and an exterior member of the vehicle body.

[0233] In some embodiments, as shown in Figure 1 and Figure 4 , Figure 5As shown, the inner and outer trim mounting structure 3 refers to a structure for mounting at least one of the inner trim, the outer trim and the exterior member of the vehicle body to the frame beam body 1, for example, the inner and outer trim mounting structure 3 can be a laser radar mounting point, an outer trim mounting point or a wire harness mounting point, etc. The specific form of the inner and outer trim mounting structure 3 is not limited in the present application, for example, the laser radar side mounting structure can be connected with the frame beam body 1 by snap fit, riveting, threaded connection, etc. The inner trim and the outer trim can be directly mounted to the inner and outer trim mounting structure 3, or can be mounted through a connecting piece (for example, a metal connecting piece).

[0234] In some embodiments, the frame beam body 1, the reinforcing structure 2 and the inner and outer trim mounting structure 3 are connected into an integrated structure. Alternatively, the mold-formed frame beam body 1, the injection-molded reinforcing structure 2 and the inner and outer trim mounting structure 3 are connected by bonding or other connection methods, or the frame beam body 1, the reinforcing structure 2 and the inner and outer trim mounting structure 3 are integrally formed by mold injection, thereby further simplifying the manufacturing process of the vehicle body frame 10 and further improving the part integration of the vehicle body frame 10. In addition, since injection molding can form a relatively complex structure, it is beneficial to flexibly design the reinforcing structure 2 and the inner and outer trim mounting structure 3.

[0235] Thus, the inner and outer trim mounting structure 3 can be integrated into the frame beam body 1, which not only can reliably support the inner and outer trim, but also is beneficial to reduce the number of parts, simplify the manufacturing process and improve the manufacturing efficiency.

[0236] In some embodiments, the inner and outer trim mounting structure 3 is a second fiber-reinforced composite injection molding part.

[0237] Thus, on the one hand, the fiber-reinforced composite material with light weight can replace steel to meet the lightweight demand of the inner and outer trim mounting structure 3, and on the other hand, it is beneficial to form the inner and outer trim mounting structure 3 by injection molding.

[0238] In some embodiments, as shown in Figure 4 and Figure 5 A part of the reinforcing rib 211 is arranged around the inner and outer trim mounting structure 3.

[0239] As shown, the reinforcing rib 211 extends to the inner and outer trim mounting structure 3. For example, the inner and outer trim mounting structure 3 can be a protruding structure connected with the frame beam body 1, and the reinforcing rib 211 extends to a position of the protruding structure avoiding the mounting support surface 311.

[0240] Thus, the reinforcing rib 211 is beneficial to improve the strength and rigidity of the inner and outer trim mounting structure 3.

[0241] In some embodiments, as shown in Figures 4 to 7As shown, the inner and outer trim mounting structure 3 comprises a mounting boss 31, the mounting boss 31 comprises a mounting support surface 311 for supporting the inner trim and / or the outer trim.

[0242] As shown, the shape of the mounting boss 31 can be a circular truncated cone shape, can be an oblong circular truncated cone shape, can be a prism, can be a stepped shape, and the embodiments of the present application do not have special limitations thereon, and the shape of the mounting boss 311 can be designed in combination with the mounting structure of the inner trim and / or the outer trim to be mounted. Figures 4 to 7

[0243] In addition, regarding the position of the mounting boss 31, the shape of the mounting boss 31 can be designed in combination with the arrangement position of the inner trim and / or the outer trim to be mounted.

[0244] Exemplarily, the mounting boss 31 can be provided with a plurality of mounting bosses 31, and for the convenience of distinguishing and explaining, part of the mounting bosses 31 are marked as mounting boss 31a and mounting boss 31b.

[0245] Exemplarily, the mounting boss 31a and the mounting boss 31b can be used as outer trim mounting points; can also be used as inner trim mounting points. Exemplarily, the outer trim can include an outer trim plate and the like, a door lock hinge and the like, the outer member can include a laser radar and the like, and the inner trim can include a wire harness, a lamp decoration, an inner trim plate and the like.

[0246] Exemplarily, the mounting of the inner trim and / or the outer trim can be one or more of bolt connection, snap connection, riveting and the like.

[0247] In addition, as shown in Figure 4 、 Figure 6 and Figure 7 , the mounting boss 31 can have a mounting support surface 311.

[0248] Therefore, the mounting support surface 311 is beneficial to provide stable support for the inner trim and / or the outer trim, facilitate the mounting and fixing of the inner trim and / or the outer trim, also make the inner and outer trim assembly not easy to displace or fall off, and also be beneficial to inhibit the shaking and noise of the inner and outer trim assembly.

[0249] Therefore, the mounting support surface 311 is beneficial to provide stable support for the inner trim and / or the outer trim, reduce the risk of displacement, falling off, shaking, making noise and the like of the inner and outer trim assembly, and also facilitate the mounting of the inner trim and / or the outer trim.

[0250] In some embodiments, as Figures 4 to 7 ​As shown, the interior and exterior trim mounting structure 3 includes a first mounting boss 31a and a second mounting boss 31b protruding toward the inside of the vehicle body, the first mounting boss 31a and the second mounting boss 31b are arranged in a spaced apart manner along the length direction of the frame beam body 1, the reinforcing structure 2 includes a plurality of reinforcing ribs 211, a portion of the reinforcing ribs 211 is arranged between the first mounting boss 31a and the second mounting boss 31b in the length direction.

[0251] As shown, the first mounting boss 31a and the second mounting boss 31b can be arranged close to the two ends of the frame beam body 1 in the width direction of the vehicle body. The first mounting boss 31a and the second mounting boss 31b can be formed to have substantially the same shape and size, of course, they can also be adjusted according to the interior trim and the exterior trim to be mounted. Figure 7

[0252] In some embodiments, the interior trim and the exterior trim can also be connected to the first mounting boss 31a and the second mounting boss 31b by a metal connecting structure.

[0253] Therefore, the reinforcing ribs 211 arranged between the first mounting boss 31a and the second mounting boss 31b can improve the strength and rigidity of the frame beam body 1 and the interior and exterior trim mounting structure 3.

[0254] In some embodiments, although not shown, the reinforcing structure 2 can further include a second reinforcing component, the second reinforcing component is in a tubular shape.

[0255] As shown, a portion of the plurality of reinforcing ribs 211 can be replaced by a tubular reinforcing column, the reinforcing column can extend along the length direction of the frame column body 1. Figure 6

[0256] Further attaching a tubular reinforcing structure can effectively absorb impact energy, and has high strength and rigidity, and is easy to process and install, which is beneficial to improve the assembly efficiency of the vehicle body frame 10 and shorten the manufacturing cycle of the vehicle body frame 10.

[0257] In some embodiments, as shown in Figure 1 and Figure 2 As shown, the vehicle body frame 10 includes a vehicle body pillar assembly 101, a roof cross beam assembly 102, a side beam assembly 103 and a rocker beam assembly 104; the frame beam body 1 includes a vehicle body pillar, a side beam, a roof cross beam and a rocker beam, the frame beam body 1, the reinforcing structure 2 and the interior and exterior trim mounting structure 3 together form at least part of the vehicle body pillar assembly 101 and / or at least part of the roof cross beam assembly 102 and / or at least part of the side beam assembly 103 and / or at least part of the rocker beam assembly 104. ​​

[0258] This enhances the strength and rigidity of the body pillars 101 and / or body beams, improves the crashworthiness of the body frame 10, and also helps to increase the overall lightweighting of the body.

[0259] In some embodiments, such as Figure 1 and Figure 2 As shown, along the longitudinal direction of the vehicle body, the body pillar assembly 101 may include at least one of the following: a front pillar assembly (also referred to as the "A-pillar assembly") 1011, a middle pillar assembly (also referred to as the "B-pillar assembly") 1012, and a rear pillar assembly (also referred to as the "C-pillar assembly") 1013; the body pillars include at least one of the front pillar, middle pillar, and rear pillar. The structure formed by the frame beam body 1, the reinforcing structure 2, and the interior and exterior trim mounting structure 3 as described above may be part or all of the front pillar assembly (also referred to as the "A-pillar assembly") 1011, and / or, part or all of the middle pillar assembly (also referred to as the "B-pillar assembly") 1012, and / or, part or all of the rear pillar assembly (also referred to as the "C-pillar assembly") 1013.

[0260] Therefore, the above structure can be applied to any of the front pillars, middle pillars, and rear pillars. On the one hand, it helps to improve the strength and rigidity of the entire vehicle body, and on the other hand, it helps to reduce the weight of each body pillar and improve the overall lightweighting of the vehicle body.

[0261] In some embodiments, the roof crossbeam includes at least one of the front roof crossbeam, the middle roof crossbeam, and the rear roof crossbeam, and the roof crossbeam assembly 102 includes at least one of the front roof crossbeam assembly 1021, the middle roof crossbeam assembly (not shown), and the rear roof crossbeam assembly 1022.

[0262] For example, Figures 4 to 6 The structure shown is used for the rear crossbeam assembly 1022 on the roof.

[0263] The torsional stiffness of the rear crossbeam assembly 1022 on the roof is greater than 25,000 N / mm; the bending stiffness is greater than 17,000 N / mm.

[0264] This enhances the strength of the front roof crossbeam assembly 1021, the middle roof crossbeam assembly, or the rear roof crossbeam assembly 1022, improves the collision performance of the vehicle body frame 10, and meets the requirements for stiffness and rigidity.

[0265] In some embodiments, the body pillar assembly 101 includes a front pillar assembly 1011 and / or a center pillar assembly 1012, and the body frame 10 further includes at least one metal connection structure (not shown), the at least one metal connection structure is disposed on the interior and exterior trim mounting structure 3, and the at least one metal connection structure is used to connect at least one of a door hinge, a door lock, and a door opening limiter.

[0266] The body pillar assembly 101 includes a front pillar assembly 1011 and / or a middle pillar assembly 1012, and the frame beam body 1, the reinforcing structure 2 and the interior and exterior trim mounting structure 3 jointly form at least a part of the front pillar assembly 1011 and / or at least a part of the middle pillar assembly 1012. It should be noted that, in the case where the frame beam body 1, the reinforcing structure 2 and the interior and exterior trim mounting structure 3 jointly form a part of the pillar assembly 101, the first direction is consistent with the up-down direction of the vehicle body, and the second direction is consistent with the front-rear direction of the vehicle body.

[0267] The vehicle body frame 10 further includes at least one metal connecting structure, the reinforcing structure 2 and the interior and exterior trim mounting structure 3 are injection molded on the surface of the frame beam body 1, and the at least one metal connecting structure is arranged on the interior and exterior trim mounting structure. These metal connecting structures can be used to connect at least one of the door hinge, the door lock and the door opening limiter. In this case, the door hinge, the door lock and the door opening limiter are also a kind of interior trim. In addition, the position of the metal connecting structure 25 can be set according to the actual situation of the vehicle. In the case where the structure shown in the figure is used for the roof rear cross beam assembly 1022, the metal connecting structure can be used to connect at least one of the door hinge, the door lock and the door opening limiter of the back door. Figures 4 to 6

[0268] Optionally, the metal connecting structure can be connected to the interior and exterior trim mounting structure 3 by a metal insert injection molding process, or the metal connecting structure can be connected to the interior and exterior trim mounting structure 3 by bolt connection.

[0269] It can be understood that the metal insert injection molding process refers to placing the metal connecting structure in the mold where the frame beam body 1 is located, and then injecting the injection material of the reinforcing structure 2 into the mold, and then cooling and forming.

[0270] In this embodiment, the door hinge, the door lock and the door opening limiter are all applied to the opening and closing of the door, and in the process of use of the vehicle, the door needs to be frequently opened and closed, the door hinge and the door opening limiter also need to be frequently rotated, and the door lock needs to be frequently opened and closed, that is, the metal connecting structure needs to withstand repeated opening and closing cycles, and the metal material makes the metal connecting structure have good fatigue performance, so that the metal connecting structure remains structurally complete in multiple cycles.

[0271] That is, the metal connecting structure can strengthen the local structure of the vehicle body pillar assembly 101, improve the installation strength and installation reliability of the door hinge, the door lock and the door opening limiter, and reduce the risk of deformation, tearing and the like at the installation site.

[0272] ​In some embodiments, the vehicle body pillar assembly 101 comprises a rear pillar assembly 1013 and / or a center pillar assembly 1012, and the interior and exterior trim mounting structure 3 comprises at least one seat belt accessory mounting structure (not shown) for mounting a seat belt accessory, wherein the seat belt accessory comprises at least one of a seat belt tensioner and a seat belt retractor.

[0273] The vehicle body pillar assembly 101 comprises a center pillar assembly 1012 and / or a rear pillar assembly 1013, and the frame beam body 1, the reinforcement structure 2 and the interior and exterior trim mounting structure 3 jointly form at least a part of the center pillar assembly 1012 and / or at least a part of the rear pillar assembly 1013. The interior and exterior trim mounting structure 3 can comprise at least one seat belt accessory mounting structure; the at least one seat belt accessory mounting structure is for mounting a seat belt accessory, wherein the seat belt accessory comprises at least one of a seat belt tensioner and a seat belt retractor. That is, the interior and exterior trim mounting structure 3 can provide a mounting position for the seat belt accessory. In this case, the seat belt accessory is also a kind of interior or exterior trim.

[0274] In this way, not only can the seat belt accessory be mounted, but also the seat belt accessory mounting structure can be reinforced by the reinforcement structure 2, thereby facilitating the improvement of the structural strength and the structural rigidity of the seat belt accessory mounting structure and reducing the probability of seat belt failure caused by the failure of the seat belt accessory mounting structure.

[0275] In some embodiments, the interior and exterior trim mounting structure 3 comprises at least one of a door switch assembly mounting structure, an exterior detection device mounting structure, an interior detection device mounting structure, an interior lighting mounting structure, a wire harness mounting structure, an interior panel mounting structure, and an exterior panel mounting structure.

[0276] For example, the exterior component can comprise an exterior detection device and its accessory mounting structure, the exterior trim can comprise an exterior panel and its accessory mounting structure, etc., and the exterior detection device can comprise a laser radar, an image radar, a camera, an obstacle sensor, etc.; the interior component can comprise an interior detection device and its accessory mounting structure, an interior lighting and its accessory mounting structure, a wire harness and its accessory mounting structure, an interior panel and its accessory mounting structure, etc., and the interior detection device can comprise a camera, a detector, etc., and the interior lighting can comprise a reading lamp, an ambient light, a mirror light, etc. The door lock, the door hinge, the door opening limiter, etc. can also be a kind of interior or exterior trim.

[0277] In this way, various interior and exterior trim mounting structures 3 can be integrated into the frame beam body 1, not only can the interior and exterior trim be reliably supported, but also the number of parts can be reduced, the manufacturing process can be simplified, and the manufacturing efficiency can be improved.

[0278] In some embodiments, the frame beam body 1, the reinforcing structure 2 and the interior and exterior trim mounting structure 3 are formed into a roof rear cross beam assembly, the roof rear cross beam is formed with a first plate section 13 and a recessed groove 14 connected with the first plate section 13 and recessed to the outside of the vehicle body, the first plate section 13 is located rearward of the recessed groove 14, and the part of the recessed groove 14 towards the outside of the vehicle body is used to connect a roof panel.

[0279] Therefore, this structure can meet the strength and rigidity requirements of the roof cross beam assembly 102, can connect other structures of the vehicle body, and can be integrally molded, thereby simplifying the manufacturing process of the vehicle body frame 10, shortening the manufacturing cycle of the vehicle body frame 10, and improving the integration of the vehicle body frame 10.

[0280] In some embodiments, the vehicle body frame 10 further comprises at least one metal connecting structure (not shown) arranged on the roof rear cross beam (not shown), and the at least one metal connecting structure is used to connect at least one of a door hinge, a door opening limiter.

[0281] The vehicle body frame 10 further comprises at least one metal connecting structure, the reinforcing structure 2 and the interior and exterior trim mounting structure 3 are injection molded on the surface of the frame beam body 1, and the at least one metal connecting structure is arranged on the interior and exterior trim mounting structure 3. These metal connecting structures can be used to connect at least one of a door hinge, a door lock, and a door opening limiter. In this case, the door hinge, the door lock, and the door opening limiter are also a kind of interior or exterior trim. In addition, the position of the metal connecting structure can be set according to the actual situation of the vehicle.

[0282] Optionally, the metal connecting structure can be connected to the interior and exterior trim mounting structure 3 by a metal insert injection molding process, or the metal connecting structure can be connected to the interior and exterior trim mounting structure 3 by a bolt connection.

[0283] It can be understood that the metal insert injection molding process refers to placing the metal connecting structure in a mold in which the frame beam body 1 is located, and then injecting the injection material of the reinforcing structure 2 into the mold, and then cooling and forming.

[0284] In this embodiment, the door hinge, the door lock, and the door opening limiter are all applied to the opening and closing of the door, and in the use process of the vehicle, the door needs to be frequently opened and closed, the door hinge and the door opening limiter also need to be frequently rotated, and the door lock needs to be frequently opened and closed, that is, the metal connecting structure needs to withstand repeated opening and closing cycles, and the metal material makes the metal connecting structure have good fatigue performance, so that the metal connecting structure remains structurally intact in multiple cycles.

[0285] For example, the metal connecting structure can strengthen the partial structure of the mounting boss 3 of the rear roof cross beam, improve the mounting strength and mounting reliability of the door hinge, door lock and door opening limiter of the back door, and reduce the risk of deformation and tearing of the mounting part.

[0286] In some embodiments, the inner and outer trim mounting structure 3 includes a first mounting boss 31a and a second mounting boss 31b protruding towards the inside of the vehicle body, and the first mounting boss 31a and the second mounting boss 31b are arranged at intervals along the length direction of the frame beam body 1, and the metal connecting structure (not shown) is connected to the support surface of the first mounting boss 31a and the second mounting boss 31b towards the outside of the vehicle body, respectively.

[0287] Therefore, the metal connecting structure can strengthen the partial structure of the first mounting boss 31a and the second mounting boss 31b of the rear roof cross beam, improve the mounting strength and mounting reliability of the door hinge, door lock and door opening limiter of the back door, and reduce the risk of deformation and tearing of the mounting part.

[0288] In some embodiments, as shown in Figure 1 The vehicle further includes a chassis 30, and the vehicle body frame 10 is mounted on the chassis and forms a passenger compartment 20 together with the chassis, and the vehicle body frame 10 includes a vehicle body pillar assembly 101 and a roof cross beam assembly 102, and the frame beam body 1, the reinforcing structure 2 and the inner and outer trim mounting structure 3 jointly form at least part of the vehicle body pillar assembly 101 and / or at least part of the roof cross beam assembly 102.

[0289] Therefore, the strength and rigidity of the vehicle body pillar 101 and / or the roof cross beam assembly 102 can be improved, and the lightweight degree of the vehicle body frame 10 can also be improved.

[0290] In some embodiments, as shown in Figure 2 The vehicle includes a vehicle body frame 10, a back door 114 and a roof panel (not shown), and the frame beam body 1, the reinforcing structure 2 and the inner and outer trim mounting structure 3 jointly form a rear roof cross beam assembly 1022, and the roof panel and the back door 114 are connected to the rear roof cross beam assembly 1022, respectively.

[0291] Therefore, the strength and rigidity of the rear roof cross beam assembly can be improved, and the lightweight degree of the vehicle body frame 10 and the whole vehicle can also be improved.

[0292] In some embodiments, the roof panel includes a sunroof glass (not shown).

[0293] Optionally, the sunroof glass can be a panoramic sunroof.

[0294] Therefore, the structure of the embodiments of the present application can be suitable for various roof designs.

[0295] In some embodiments, in some embodiments, as shown inFigure 3 As shown, the vehicle 1000 further comprises a battery device 200, which is mounted to the chassis (not shown).

[0296] The battery device 200 can comprise a housing defining an accommodation space, and a plurality of battery cells, busbars, etc. received in the accommodation space of the housing. The structure of the battery device 200 can adopt the structure of an existing battery device 200 (e.g. a battery pack), which will not be described herein again.

[0297] The housing of the battery device 200 can be mounted to the chassis 30. The chassis 30 can comprise a floor 31, and the battery device 200 can be mounted below the floor 31, or the housing itself can constitute at least part of the floor 31.

[0298] Thus, the vehicle 1000 has the advantages of excellent strength, rigidity performance and light weight on the one hand, and can improve the space utilization of the vehicle bottom, reduce the space occupation of the battery device 200 to the passenger compartment and trunk, and is beneficial to provide more spacious seating and storage space. Moreover, the installation of the battery device 200 on the chassis 30 can reduce the direct impact of the battery device 200 and the like on the passengers during vehicle collision. In addition, the centralized installation of the battery device 200 on the chassis 30 facilitates maintenance and replacement, and reduces the complexity of daily maintenance.

[0299] In some embodiments, as shown in Figure 1 The housing of the battery device 200 forms at least part of the floor of the passenger compartment 20.

[0300] For example, the upper housing wall of the battery device 200 serves as part of the floor 31 or the entire floor 31.

[0301] Thus, the redundancy of the vehicle can be reduced, thereby reducing the overall weight. Moreover, the packaging space of the battery module can be increased, the internal layout of the vehicle can be optimized, and the space utilization can be improved.

[0302] In some embodiments, as shown in Figure 1 The vehicle body frame 10 is detachably connected to the upper portion of the chassis 30.

[0303] The vehicle body frame 10 and the chassis 30 can be connected by bolts or the like.

[0304] Thus, it is beneficial to simplify the assembly process, improve the production efficiency of the vehicle, and facilitate the organization of specialized cooperation.

[0305] Next, the manufacturing method provided by the embodiments of the present application will be described.

[0306] The vehicle comprises a vehicle body frame 10, which comprises a frame beam body 1 having a first side and a second side arranged oppositely, and a reinforcing structure 2 arranged at least on the first side and forming at least one cavity for reinforcing the strength of the frame beam body 1, wherein the frame beam body 1 and the reinforcing structure 2 are integrally formed by means of mold injection.

[0307] In the embodiments of the present application, the vehicle body frame 10 is prepared by means of mold injection, so that the frame beam body 1 and the reinforcing structure 2 are integrally formed, thereby simplifying the manufacturing process of the vehicle 10, reducing the investment in manufacturing equipment and development cost, shortening the manufacturing cycle of the vehicle 10, and improving the integration of parts. In addition, the strength and rigidity requirements of the vehicle body frame 10 can be met due to the reinforcing structure 2.

[0308] In some embodiments, the vehicle body frame 10 further comprises an interior and exterior trim mounting structure 3 arranged on the reinforcing structure 2 and used for mounting at least one of an interior trim part, an exterior trim part and an exterior component of the vehicle body, wherein the frame beam body 1, the reinforcing structure 2 and the interior and exterior trim mounting structure 3 are integrally formed by means of mold injection.

[0309] Therefore, the vehicle body frame 10 is prepared by means of mold injection, so that the frame beam body 1, the reinforcing structure 2 and the interior and exterior trim mounting structure 3 are integrally formed, thereby simplifying the manufacturing process of the vehicle body frame 10 and the vehicle, shortening the manufacturing cycle of the vehicle, and improving the integration of parts.

[0310] Figure 8 A flowchart of a manufacturing method of a vehicle according to some embodiments of the present application is provided.

[0311] In some embodiments, as shown in Figure 8 the manufacturing method comprises steps S101 and S102.

[0312] Step S101: providing a first substrate made of a first fiber-reinforced composite material, and molding the first substrate to form the frame beam body 1;

[0313] Step S102: providing a second fiber-reinforced composite material, and forming the reinforcing structure 2 and the interior and exterior trim mounting structure 3 integrally connected with the frame beam body 1 by means of injection molding.

[0314] The first substrate can be a composite material plate made of the first fiber-reinforced composite material, or a plurality of composite material layers. As to the first fiber-reinforced composite material, the materials described above can be used, which will not be repeated here.

[0315] The second fiber-reinforced composite material can use the materials described above, and known injection molding processes can be used, which will not be repeated here.

[0316] Therefore, the frame beam body 1, the reinforcing structure 2 and the interior and exterior trim mounting structure 3 are integrally formed by the mold injection process, which is beneficial to simplify the manufacturing process of the vehicle and shorten the manufacturing cycle of the vehicle.

[0317] In some embodiments, the first fiber-reinforced composite material and the second fiber-reinforced composite material are both glass fiber reinforced polypropylene composite materials, wherein the weight fraction of the glass fiber in the first fiber-reinforced composite material is higher than or equal to the weight fraction of the glass fiber in the second fiber-reinforced composite material.

[0318] The glass fiber reinforced polypropylene composite material has high strength and rigidity, creep resistance and good dimensional stability, thereby further improving the structural strength and rigidity of the vehicle body frame 10, and the vehicle body frame 10 is less likely to deform even in a high temperature environment. The weight fraction of the glass fiber in the first fiber-reinforced composite material is higher than or equal to the weight fraction of the glass fiber in the second fiber-reinforced composite material, so that the flowability of the second fiber-reinforced composite material can be appropriately improved when the reinforcing structure 2 and the interior and exterior trim mounting structure 3 are made, which is more conducive to forming the reinforcing structure 2 and the interior and exterior trim mounting structure 3 by injection molding.

[0319] In some embodiments, the first fiber-reinforced composite material comprises a glass fiber reinforced polypropylene composite material, and the weight fraction of the glass fiber therein is greater than or equal to 60 and less than or equal to 80. For example, the weight fraction of the glass fiber in the first fiber-reinforced composite material is 60, 65, 70, 75, 80 or a value between any two of the values. Alternatively, the weight fraction of the glass fiber in the first fiber-reinforced composite material is greater than or equal to 68 and less than or equal to 72.

[0320] By controlling the weight fraction of the glass fiber in the first fiber-reinforced composite material and the second fiber-reinforced composite material within the above ranges respectively, the mold forming of the frame beam body 1 is facilitated, and the flowability of the second fiber-reinforced composite material is improved, which is conducive to the injection molding of the reinforcing structure 2 and the interior and exterior trim mounting structure 3.

[0321] In some embodiments, the second fiber-reinforced composite material comprises a glass fiber reinforced polypropylene composite material, and the weight fraction of the glass fiber therein is greater than or equal to 30 and less than or equal to 50. For example, the weight fraction of the glass fiber in the second fiber-reinforced composite material is 30, 32, 35, 37, 40, 42, 45, 47, 50 or a value between any two of the values. Alternatively, the weight fraction of the glass fiber in the second fiber-reinforced composite material is greater than or equal to 38 and less than or equal to 42.

[0322] By controlling the weight fraction of glass fibers in the first fiber-reinforced composite material and the second fiber-reinforced composite material within the above ranges, respectively, the frame beam body 1 is more conducive to mold forming, and the flowability of the second fiber-reinforced composite material can be improved, which is more conducive to injection molding of the reinforcing structure 2 and the interior and exterior trim mounting structure 3.

[0323] One specific embodiment of the present application is described below.

[0324] The embodiment of the present application provides a structure design of a composite material roof rear cross beam, which integrates a traditional steel roof rear cross beam upper plate, a roof rear cross beam lower plate and a roof rear cross beam support plate into one part, and meets the functional and performance requirements through a mold injection process.

[0325] Specifically, the frame beam body 1, the reinforcing structure 2 and the interior and exterior trim mounting structure 3 are formed into an integrated component through a mold injection process. The frame beam body 1 is formed through a mold process using a PP+GF70 composite material as a base material. The interior and exterior trim mounting structure 3 and the reinforcing rib 211 are formed through an injection process using a PP+GF40 composite material. Finally, a structure body with a shape as shown in Figures 4 to 6 is formed.

[0326] Such a design objectively solves the problems of a traditional steel structure, such as a complex process, a low degree of lightweight, a high investment cost of manufacturing equipment and a long cycle, fully utilizes the performance characteristics and process characteristics of a composite material, greatly improves the degree of lightweight, shortens the development cycle and reduces the development cost under the premise of meeting the performance and function.

[0327] The stiffness of the structure body shown in Figures 4 to 6 is simulated and analyzed, and the results are as follows. The torsional stiffness of the roof rear cross beam assembly 2022 in the vehicle body frame 10 is 28970 N·m / °, which is higher than the target value 25000 N / mm; the bending stiffness is 20222 N / mm, which is higher than the target value 17000 N / mm. It can be seen that the torsional stiffness and the bending stiffness both meet the performance target.

[0328] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered in the scope of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the present application.

Claims

1. A vehicle characterized by comprising: The vehicle comprises a vehicle body frame, the vehicle body frame comprising: a frame beam body having a first side and a second side arranged oppositely, the first side facing a vehicle body inner side, and the second side facing a vehicle body outer side; a reinforcing structure arranged at least on the first side and forming at least one cavity for reinforcing the strength of the frame beam body; wherein the frame beam body is a first fiber-reinforced composite material molded part, and the reinforcing structure is a second fiber-reinforced composite material injection molded part.

2. The vehicle according to claim 1, wherein a thickness of the frame beam body is 1.2mm-5mm.

3. The vehicle according to claim 1 or 2, wherein the reinforcing structure comprises a first reinforcing assembly, the first reinforcing assembly comprises a plurality of reinforcing ribs, at least part of the plurality of reinforcing ribs are arranged in a staggered mesh shape, the cavity is formed at least at a mesh position, and / or the plurality of reinforcing ribs are connected end to end in a cylindrical shape, and an inner cavity of the cylinder constitutes the cavity.

4. The vehicle according to claim 3, wherein the cavity is further enclosed by the reinforcing ribs and the frame beam body.

5. The vehicle according to claim 3 or 4, wherein a thickness of a root of the reinforcing rib is 2.5mm-3.5mm, the root of the reinforcing rib is a position where the reinforcing rib is connected to the frame beam body, and a thickness of the frame beam body is 2.5mm-3.5mm.

6. The vehicle according to any one of claims 3 to 5, wherein the plurality of reinforcing ribs comprise reinforcing ribs arranged at intervals, and a spacing between adjacent reinforcing ribs is in a range of 20mm-50mm.

7. The vehicle according to any one of claims 3 to 6, wherein a length of each reinforcing rib extending away from the frame beam body is in a range of 5mm-40mm.

8. The vehicle according to any one of claims 3 to 7, wherein the plurality of reinforcing ribs are arranged upright relative to the frame beam body, and comprise first direction reinforcing ribs extending along a length direction of the frame beam body and second direction reinforcing ribs extending along a second direction intersecting the length direction.

9. The vehicle according to any one of claims 1 to 8, wherein the reinforcing structure comprises a first reinforcing assembly, the first reinforcing assembly comprises a plurality of reinforcing ribs, at least part of the plurality of reinforcing ribs are arranged in a staggered mesh shape, the cavity is formed at least at a mesh position, the frame beam body is formed with a first plate segment and a recessed groove connected to the first plate segment and recessed towards a vehicle body outer side, and a mesh formed by the reinforcing ribs in the recessed groove is larger than a mesh formed by the reinforcing ribs in the first plate segment.

10. The vehicle according to claim 9, wherein the recessed groove comprises a second plate segment, a third plate segment and a fourth plate segment connected in sequence, wherein the second plate segment and the fourth plate segment constitute groove side walls of the recessed groove, and the third plate segment constitutes a groove bottom wall of the recessed groove. The reinforcing ribs formed in the recessed grooves are respectively connected to the second plate section, the third plate section, and the fourth plate section.

11. The vehicle according to any one of claims 3 to 10, characterized in that The vehicle body frame further includes an interior and exterior trim mounting structure connected to the reinforcing structure for mounting at least one of an interior trim, an exterior trim, and an exterior member of the vehicle body.

12. The vehicle according to claim 11, characterized in that The interior and exterior trim mounting structure is the second fiber-reinforced composite injection molded member.

13. The vehicle according to claim 11 or 12, characterized in that A portion of the reinforcing ribs is disposed around the interior and exterior trim mounting structure.

14. The vehicle according to any one of claims 11 to 13, characterized in that The interior and exterior trim mounting structure includes a mounting boss including a mounting support surface for supporting the interior trim and / or the exterior trim.

15. The vehicle according to claim 14, characterized in that The interior and exterior trim mounting structure includes a first mounting boss and a second mounting boss projecting toward an inside of the vehicle body, the first mounting boss and the second mounting boss being spaced apart along a length direction of the frame rail body, The reinforcing structure includes a plurality of reinforcing ribs, a portion of the reinforcing ribs being disposed between the first mounting boss and the second mounting boss along the length direction.

16. The vehicle according to any one of claims 3 to 8, characterized in that The reinforcing structure further includes a second reinforcing member, the second reinforcing member being tubular.

17. The vehicle according to any one of claims 11 to 15, characterized in that The vehicle body frame includes a vehicle body pillar assembly, a side rail assembly, a roof rail assembly, and a rocker rail assembly; the frame rail body includes a vehicle body pillar, a side rail, a roof rail, and a rocker rail, The frame rail body, the reinforcing structure, and the interior and exterior trim mounting structure collectively form at least a portion of the vehicle body pillar assembly and / or at least a portion of the side rail assembly and / or at least a portion of the roof rail assembly and / or at least a portion of the rocker rail assembly.

18. The vehicle according to claim 17, characterized in that The vehicle body pillar includes at least one of a front pillar, a center pillar, and a rear pillar along a front-rear direction of the vehicle body; The vehicle body pillar assembly includes at least one of a front pillar assembly, a center pillar assembly, and a rear pillar assembly.

19. The vehicle according to claim 17, characterized in that The roof rail includes at least one of a front roof rail, a center roof rail, and a rear roof rail, The roof rail assembly includes at least one of a front roof rail assembly, a center roof rail assembly, and a rear roof rail assembly.

20. The vehicle according to claim 18, characterized in that The vehicle body pillar assembly includes the front pillar assembly and / or the middle pillar assembly, and the vehicle body frame further includes at least one metal connecting structure arranged at the interior-exterior trim mounting structure, the at least one metal connecting structure being used for connecting at least one of a door hinge, a door lock, and a door opening limiter.

21. The vehicle of claim 18, wherein The vehicle body pillar assembly includes the rear pillar and / or the middle pillar, and the interior-exterior trim mounting structure includes at least one seat belt accessory mounting structure used for mounting a seat belt accessory, wherein the seat belt accessory includes at least one of a seat belt tensioner and a seat belt retractor.

22. The vehicle of claim 17, wherein The interior-exterior trim mounting structure includes at least one of a door switch assembly mounting structure, an exterior detection device mounting structure, an interior detection device mounting structure, an interior light mounting structure, a wire harness mounting structure, an interior panel mounting structure, and an exterior panel mounting structure.

23. The vehicle of claim 19, wherein The frame beam body, the reinforcing structure, and the interior-exterior trim mounting structure form the vehicle roof rear cross beam assembly, The vehicle roof rear cross beam is formed with a first plate segment and a recessed groove connected to the first plate segment and recessed toward the vehicle body outer side, the first plate segment being located rearward of the vehicle body relative to the recessed groove, and a portion of the recessed groove toward the vehicle body outer side being used for connecting a roof panel.

24. The vehicle of claim 23, wherein The vehicle body frame further includes at least one metal connecting structure arranged at the vehicle roof rear cross beam assembly; The at least one metal connecting structure is used for connecting at least one of a door hinge and a door opening limiter.

25. The vehicle of claim 24, wherein The interior-exterior trim mounting structure includes a first mounting boss and a second mounting boss protruding toward the vehicle body inner side, the first mounting boss and the second mounting boss being arranged at intervals along a length direction of the frame beam body, The metal connecting structure is connected to a support surface of the first mounting boss and the second mounting boss toward the vehicle body outer side, respectively.

26. The vehicle of any one of claims 17-25, wherein, The vehicle further includes a chassis, the vehicle body frame is mounted to the chassis and forms a passenger compartment together, the vehicle body frame includes a vehicle body pillar assembly and a roof cross beam assembly, and the frame beam body, the reinforcing structure, and the interior-exterior trim mounting structure form at least part of the vehicle body pillar assembly and / or at least part of the roof cross beam assembly together.

27. The vehicle of claim 26, wherein, The vehicle includes the vehicle body frame, a back door, and a roof panel, The frame beam body, the reinforcing structure, and the interior-exterior trim mounting structure form a vehicle roof rear cross beam assembly together, and the roof panel and the back door are connected to the vehicle roof rear cross beam assembly, respectively.

28. The vehicle of claim 27, wherein, The roof panel includes a sunroof glass.

29. The vehicle of any one of claims 26-28, characterized in that, The vehicle further includes a battery device mounted to the chassis.

30. The vehicle of claim 29, wherein, An outer shell of the battery device forms at least part of a floor of the passenger compartment.

31. The vehicle of any one of claims 26-30, wherein: the body frame is detachably coupled above the chassis.

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