Chassis structure and vehicle

Abstract

The utility model discloses a chassis structure and a vehicle, and relates to the technical field of vehicles, the chassis structure comprises a first vehicle frame, a second vehicle frame and a battery mounting rack, the battery mounting rack is configured to be a truss structure, and two opposite ends of the battery mounting rack are respectively connected with the first vehicle frame and the second vehicle frame. According to the technical scheme, the lightweight level of the chassis structure can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a chassis structure and a vehicle. Background Art

[0002] The vehicle industry is currently developing rapidly, but if vehicles want to obtain better power performance, handling stability, and safety performance, the entire vehicle needs to have a good lightweight level. The chassis structure plays a vital role in the entire vehicle. The lightweight design of the chassis structure has a large positive benefit on the performance of the entire vehicle, so the vehicle needs to have an excellent lightweight chassis structure. Utility Model Content

[0003] The main purpose of the utility model is to provide a chassis structure, aiming to improve the lightweight performance level of the chassis structure.

[0004] To achieve the above objectives, the chassis structure proposed in the present invention includes:

[0005] First frame;

[0006] second frame; and

[0007] A battery mounting frame is configured as a truss structure, and opposite ends of the battery mounting frame are respectively connected to the first frame and the second frame.

[0008] In one embodiment, the battery mounting rack includes a bottom truss and a top truss, the bottom truss includes two opposite first truss longitudinal beams and a plurality of first truss transverse beams connected between the two first truss longitudinal beams, and the top truss includes two opposite second truss longitudinal beams and a plurality of second truss transverse beams connected between the two second truss longitudinal beams.

[0009] In one embodiment, the number of the first truss beams is greater than the number of the second truss beams.

[0010] In one embodiment, a support column is provided between the ends of the adjacent first truss longitudinal beams and the second truss longitudinal beams, and / or

[0011] A plurality of reinforced truss beams are provided between the two supporting columns.

[0012] In one embodiment, a plurality of said first truss beams are arranged in parallel, and / or

[0013] The second truss cross beams include a plurality of middle cross beams and a plurality of end cross beams, the end cross beams are arranged at the ends of the second truss longitudinal beams, the middle cross beams are arranged obliquely, and the inclination directions of any two adjacent middle cross beams are different, and / or

[0014] The reinforced truss beams are arranged obliquely, and the inclination directions of any two adjacent reinforced truss beams are different.

[0015] In one embodiment, two mounting ears are respectively provided at opposite ends of the battery mounting frame, and the chassis structure is provided with a reinforcing connector corresponding to the mounting ears. The reinforcing connector, the mounting ears, and the first frame or the second frame are connected as a whole by fasteners. The reinforcing connector is also used for connection to the front leaf spring and rear bracket of the vehicle.

[0016] In one embodiment, the battery mounting rack further includes a protective plate, and the protective plate covers the truss structure.

[0017] In one embodiment, the protective plate and the truss structure are welded and bonded with structural adhesive.

[0018] In one embodiment, at least one side surface of the protective plate is provided with a reinforcement layer.

[0019] In one embodiment, the protective plate is configured as a steel plate, and / or,

[0020] The strengthening layer is configured as a polyurea coating; and / or,

[0021] The thickness of the strengthening layer ranges from 0.3 mm to 1 mm.

[0022] The utility model also provides a vehicle, comprising the above-mentioned chassis structure.

[0023] The battery mounting frame of the technical solution of the present invention adopts a truss structure, and the opposite ends of the battery mounting frame are respectively connected to the first frame and the second frame to form a chassis structure. Since the truss structure will concentrate the tensile and compressive sections at the upper and lower ends when subjected to force, thereby increasing the internal force arm and achieving greater bending strength with the same amount of material. Therefore, the use of a truss structure can improve the strength and structural stability of the chassis structure; moreover, while ensuring the structural strength of the chassis structure, the material usage of the battery mounting frame can be reduced, the weight of the battery mounting frame can be reduced, and the lightweight level of the chassis structure can be improved, thereby reducing the no-load energy consumption of the chassis structure. It can be seen that this solution is conducive to improving the lightweight level of the chassis structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 A schematic structural diagram of the chassis structure provided by the present invention from a first perspective;

[0026] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0027] Figure 3 A structural schematic diagram of the chassis structure provided by the present invention from a second perspective;

[0028] Figure 4 This is a structural schematic diagram of the chassis structure provided by the utility model from the fourth perspective.

[0029] Description of Figure Numbers:

[0030] 100, first frame; 200, second frame; 300, battery mounting frame; 310, bottom truss; 311, first truss longitudinal beam; 312, first truss cross beam; 320, top truss; 321, second truss longitudinal beam; 322, second truss cross beam; 322a, middle cross beam; 322b, end cross beam; 330, support column; 340, reinforced truss beam; 350, mounting lug; 400, reinforced connector.

[0031] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] The utility model provides a chassis structure.

[0036] See also Figures 1 to 3 In one embodiment of the present invention, the chassis structure includes a first frame 100, a second frame 200 and a battery mounting frame 300. The battery mounting frame 300 is configured as a truss structure, and the opposite ends of the battery mounting frame 300 are respectively connected to the first frame 100 and the second frame 200.

[0037] The battery mounting bracket 300 of the present invention utilizes a truss structure, with the opposite ends of the battery mounting bracket 300 connected to the first frame 100 and the second frame 200, respectively, to form a chassis structure. Because the truss structure concentrates the tensile and compressive sections at the upper and lower ends when subjected to force, thereby increasing the internal moment arm and achieving greater bending strength with the same amount of material, the use of a truss structure to manufacture the battery mounting bracket 300 is beneficial for improving the strength and structural stability of the chassis structure. Furthermore, while ensuring the structural strength of the chassis structure, the material usage of the battery mounting bracket 300 can be reduced, reducing the weight of the battery mounting bracket 300 and improving the lightweight level of the chassis structure, thereby reducing the no-load energy consumption of the chassis structure. Therefore, this solution is beneficial for improving the lightweight level of the chassis structure.

[0038] Secondly, compared with the traditional solution of installing the power battery on the frame longitudinal beam by relying on the bracket, the battery mounting frame 300 composed of the truss structure of this solution eliminates redundant components such as auxiliary cross beams and auxiliary brackets for improving rigidity. This solution can reduce the chassis cost while improving the lightweight level of the chassis structure and the utilization rate of the layout space. Moreover, due to the improvement of the lightweight level of the chassis structure of this solution, it has been evaluated that the chassis structure stiffness of this solution is increased by 30%, the weight of the chassis structure can be reduced by 20%, and the ground clearance of the battery assembly is ≥270mm. Therefore, it is beneficial to improve the lightweight level of the chassis structure while improving the safety performance of the battery assembly.

[0039] It should be noted that the battery mounting frame 300 is provided with a battery mounting compartment for mounting the battery assembly. The battery mounting compartment connects the opposite ends of the battery mounting frame 300 to the first frame 100 and the second frame 200, respectively, thereby improving the system integration of the chassis structure. In the subsequent development process, it can save development cycles, reduce R&D costs, and improve indirect economic benefits. The battery assembly of this solution is installed in the battery mounting compartment. The power of the battery assembly can be adjusted according to different needs, and different power cells, different models, and different types of cells can be interchanged. This allows for free combination of cells and power, shortens the development cycle, reduces the cost of engineering data development and test verification, reduces the cost of production line design and manufacturing, and realizes product serialization.

[0040] Optionally, the battery mounting rack 300 includes a bottom truss 310 and a top truss 320, the bottom truss 310 includes two opposite first truss longitudinal beams 311 and a plurality of first truss cross beams 312 connected between the two first truss longitudinal beams 311, and the top truss 320 includes two opposite second truss longitudinal beams 321 and a plurality of second truss cross beams 322 connected between the two second truss longitudinal beams 321. Such a battery mounting rack 300 can improve the bending resistance of the battery mounting rack 300 in the height direction of the vehicle.

[0041] Furthermore, the number of first truss beams 312 is greater than the number of second truss beams 322. It is understood that after the battery assembly is installed, the bottom truss 310 is located at the bottom of the battery assembly, and the bottom truss 310 plays a primary supporting role. Therefore, having a greater number of first truss beams 312 than second truss beams 322 can ensure the strength of the truss structure while reducing the material usage of the truss structure. This can achieve the goal of reducing the weight of the chassis structure while ensuring the strength of the chassis structure, thereby further improving the lightweight level of the chassis structure. Of course, this design is not limited to this. In other embodiments, the number of first truss beams 312 can also be equal to the number of second truss beams 322.

[0042] Furthermore, multiple first truss beams 312 are arranged in parallel. It can be understood that arranging the first truss beams 312 in parallel allows the multiple first truss beams 312 to cooperate with each other, saving layout space, thereby arranging more first truss beams 312 within a limited space, thereby facilitating the improvement of the structural rigidity of the truss structure. Of course, the present design is not limited to this. In other embodiments, the first truss beams 312 can also be arranged at an angle, and the inclination directions of any two adjacent first truss beams 312 are different.

[0043] In this embodiment, the extension direction of the first truss cross beams 312 is perpendicular to the extension direction of the first truss longitudinal beams 311. This further reduces the space required for arranging the first truss cross beams 312, thereby allowing for more first truss cross beams 312 to be arranged within a limited space, thereby improving the structural rigidity of the truss structure. Of course, this design is not limited to this. In other embodiments, the extension direction of the first truss cross beams 312 may also be arranged at an acute angle to the extension direction of the first truss longitudinal beams 311.

[0044] Furthermore, the second truss crossbeams 322 include a plurality of middle crossbeams 322a and a plurality of end crossbeams 322b. The end crossbeams 322b are disposed at the ends of the second truss longitudinal beams 321. The middle crossbeams 322a are inclined, and any two adjacent middle crossbeams 322a have different inclinations. It is understood that the opposite ends of the middle crossbeams 322a are respectively connected to the two second truss longitudinal beams 321, and one end of the two middle crossbeams 322a is disposed close to each other. This allows a triangle or a near-triangle to be formed between the adjacent middle crossbeams 322a and the second truss longitudinal beams 321. The stability of the triangle enhances the overall strength and rigidity of the truss structure, thereby ensuring that the truss structure remains stable and safe when subjected to various external forces. Of course, the present design is not limited to this. In other embodiments, the middle crossbeams 322a and the end crossbeams 322b can also be disposed perpendicular to the second truss longitudinal beams 321.

[0045] Optionally, support columns 330 are provided between the ends of adjacent first and second truss longitudinal beams 311, 321. It will be appreciated that support columns 330 not only enhance the stability of the bottom trusses 310 and top trusses 320, reducing deformation such as tilting and twisting of the bottom trusses 310 and top trusses 320, but also enhance the overall rigidity of the truss structure and improve its ability to resist lateral forces. Proper provision of support columns 330 can significantly improve the truss structure's resistance to lateral cracking and seismic performance.

[0046] A plurality of reinforcing truss beams 340 are provided between the two supporting columns 330 , so as to improve the rigidity of the truss structure.

[0047] Furthermore, the reinforced truss beams 340 are arranged at an angle, and the inclination directions of any two adjacent reinforced truss beams 340 are different. It can be understood that the opposite ends of the partially reinforced truss beams 340 are respectively connected to the first truss longitudinal beam 311 and the second truss longitudinal beam 321, and one ends of the adjacent two reinforced truss beams 340 are arranged close to each other, so that a triangle or an approximately triangle can be formed between the two reinforced truss beams 340 and the first truss longitudinal beam 311 or the second truss longitudinal beam 321. The opposite ends of the partially reinforced truss beams 340 are respectively connected to the end cross beam 322b and the first truss cross beam 312 located at the end of the first truss longitudinal beam 311, and one ends of the adjacent two reinforced truss beams 340 are arranged close to each other, so that a triangle or an approximately triangle can be formed between the two reinforced truss beams 340 and the first truss cross beam 312 located at the end of the first truss longitudinal beam 311, thereby utilizing the stability of the triangle to enhance the overall strength and rigidity of the truss structure, thereby ensuring that the truss structure can remain stable and safe when subjected to various external forces.

[0048] Reference Figure 2 and Figure 4 Optionally, two mounting ears 350 are respectively provided at the opposite ends of the battery mounting bracket 300, and the battery mounting bracket 300 is connected to the first frame 100 and the second frame 200 through the mounting ears 350. The provision of the mounting ears 350 can increase the installation and disassembly operation space and connection area of the battery mounting bracket 300 and the first frame 100 and the second frame 200, which is convenient for the operator's installation and disassembly operations, thereby improving the installation efficiency of the battery mounting bracket 300 and the first frame 100 and the second frame 200; it can be seen that the technical solution of the utility model can improve the installation efficiency of the battery mounting bracket 300 and the first frame 100 and the second frame 200 while improving the lightweight level of the vehicle.

[0049] Optionally, the mounting lug 350 is detachably connected to the first frame 100 or the second frame 200; this is because the detachable connection method is more flexible to use and is convenient for installing and replacing devices. For example, but not limited to, when a device installed in the battery mounting rack 300 is damaged, the battery mounting rack 300 can be removed in a detachable manner, which is convenient for the operator to inspect and repair.

[0050] In one embodiment, the chassis structure is provided with a reinforcing connector 400 corresponding to the mounting lug 350, and the reinforcing connector 400, the mounting lug 350, and the first frame 100 or the second frame 200 are connected as a whole by fasteners. The reinforcing connector 400 is also used for connecting the front leaf spring and the rear bracket of the vehicle. It can be understood that by providing the reinforcing connector 400, the connection strength between the battery mounting frame 300 and the first frame 100 and the second frame 200 is improved, thereby improving the rigidity of the chassis structure and reducing the probability of breakage at the connection between the battery mounting frame 300 and the first frame 100 or the second frame 200.

[0051] It should be noted that the reinforcing connector 400 is also used for connecting the front leaf spring and rear bracket of the vehicle, so that the front leaf spring and rear bracket can be used to improve the stiffness of the connection between the battery mounting frame 300 and the first frame 100 or the second frame 200.

[0052] Furthermore, the fastener is configured as a bolt. This is because bolt connections have low processing requirements, a simple structure, and are easy to assemble and disassemble. Bolts are also inexpensive. This not only improves the efficiency of installing the mounting lug 350 on the first frame 100 or the second frame 200, but also reduces the installation cost of the mounting lug 350 on the first frame 100 or the second frame 200. Of course, the present invention is not limited to this. In other embodiments, the fastener may also be configured as a rivet.

[0053] Optionally, the battery mounting frame 300 further includes a protective plate, which covers the truss structure. It can be understood that the use of a protective plate covering the truss structure can improve the sealing of the battery mounting compartment, and the protective plate can improve the installation performance of the battery assembly in the battery mounting compartment during a side collision. The protective plate can also block the impact of external impact objects (such as stones) on the battery assembly during vehicle operation, thereby improving the safety of the battery assembly.

[0054] Secondly, since the battery mounting frame 300 adopts a truss structure, the battery mounting frame 300 is relatively strong and does not require a protective plate to provide support. Therefore, a protective plate with a smaller thickness can be used, thereby reducing the weight of the chassis structure, which is conducive to achieving a lightweight level of the chassis structure.

[0055] Furthermore, the protective plate and the truss structure are welded and bonded together using structural adhesive. The dual connection method of welding and bonding the protective plate and the truss structure can improve the connection strength between the protective plate and the truss structure. Moreover, the welding and bonding connection method can avoid fixing the protective plate by drilling holes and adding fasteners. This can improve the sealing of the battery installation compartment and prevent water from entering the battery installation compartment and causing damage to the battery assembly, thereby increasing the service life of the battery assembly. Of course, the present invention is not limited to this. In some other embodiments, the protective plate can also be fixed to the truss structure by bolts, and then the protective plate and the truss structure are bonded together using structural adhesive, and the gap between the fastening hole of the protective plate and the bolt is sealed using structural adhesive or sealing rubber.

[0056] The protective plate is configured as a steel plate because it has high toughness, allowing it to withstand external forces while maintaining structural integrity and is less susceptible to breakage or deformation. Furthermore, the steel plate has high strength and can withstand large loads, thereby improving the strength of the chassis structure. Furthermore, the steel plate evenly distributes stress when subjected to force, reducing localized stress concentration and improving the structural stability and safety of the chassis structure. Of course, the present invention is not limited to this embodiment; in other embodiments, the protective plate may also be configured as an aluminum alloy plate.

[0057] Furthermore, a reinforcement layer is provided on at least one side of the protective plate. It can be understood that providing a reinforcement layer on the protective plate can improve the strength of the protective plate, thereby improving the safety performance of the battery assembly.

[0058] Among them, the strengthening layer is configured as a polyurea coating. It can be understood that by spraying the polyurea coating on the surface of the protective plate, the polyurea coating can form a waterproof layer on the surface of the protective plate, effectively preventing moisture from penetrating, protecting the protective plate from water erosion, and also protecting the battery components in the battery installation compartment from water erosion; moreover, polyurea also has excellent corrosion resistance and durability, and can have strong resistance to a variety of chemicals, and can maintain its stable performance for a long time, which is beneficial to improving the service life of the protective plate; secondly, polyurea can be cured in a very short time, greatly shortening the construction time and improving engineering efficiency. Furthermore, the polyurea coating has excellent elasticity and scalability, and can well cope with temperature changes and structural movement of the chassis structure. It can not only reduce the problem of cracking or shedding of the coating caused by thermal expansion and contraction or structural deformation, but also improve the stone impact resistance of the battery installation compartment and improve the safety of the vehicle's battery components. Of course, the present invention is not limited to this. In some other embodiments, the strengthening layer can also be configured as a polyurethane coating.

[0059] Optionally, the thickness of the reinforcement layer ranges from 0.3 mm to 1 mm, which can improve the stone impact resistance, corrosion resistance, flame retardancy and heat insulation performance of the reinforcement layer.

[0060] In this embodiment, both sides of the protective plate are provided with a reinforcement layer, which can further increase the strength of the protective plate. Of course, the present invention is not limited to this. In other embodiments, the reinforcement layer can also be provided only on the outer side of the protective plate.

[0061] Furthermore, the thickness of the reinforcement layer located on the inner side of the protective plate is less than the thickness of the reinforcement layer located on the outer side of the protective plate. This is because the protective layer located on the outer side is exposed to the environment. This can improve the strength of the protective plate while reducing the cost of the reinforcement layer.

[0062] In this embodiment, the thickness of the reinforcement layer located on the inner side of the protective plate ranges from 0.3mm to 0.5mm, and the thickness of the reinforcement layer located on the outer side of the protective plate ranges from 0.8mm to 1mm. This ensures that the coating has sufficient corrosion resistance and strength, thereby extending the service life of the protective plate while reducing production costs.

[0063] The present utility model also proposes a vehicle, which includes a chassis structure. The specific structure of the chassis structure refers to the above-mentioned embodiments. Since the present vehicle adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0064] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A chassis structure, characterized in that: include: First frame; Second frame; and A battery mounting frame is configured as a truss structure, and opposite ends of the battery mounting frame are respectively connected to the first frame and the second frame.

2. The chassis structure according to claim 1, characterized in that: The battery mounting rack includes a bottom truss and a top truss, wherein the bottom truss includes two opposite first truss longitudinal beams and a plurality of first truss transverse beams connected between the two first truss longitudinal beams, and the top truss includes two opposite second truss longitudinal beams and a plurality of second truss transverse beams connected between the two second truss longitudinal beams.

3. The chassis structure according to claim 2, characterized in that: The number of the first truss beams is greater than the number of the second truss beams.

4. The chassis structure according to claim 2, wherein: A support column is provided between the ends of the adjacent first truss longitudinal beams and the second truss longitudinal beams, and / or A plurality of reinforced truss beams are provided between the two supporting columns.

5. The chassis structure according to claim 4, characterized in that: A plurality of the first truss beams are arranged in parallel, and / or The second truss cross beams include a plurality of middle cross beams and a plurality of end cross beams, the end cross beams are arranged at the ends of the second truss longitudinal beams, the middle cross beams are arranged obliquely, and the inclination directions of any two adjacent middle cross beams are different, and / or The reinforced truss beams are arranged obliquely, and the inclination directions of any two adjacent reinforced truss beams are different.

6. The chassis structure according to claim 1, wherein: Two mounting ears are respectively provided at opposite ends of the battery mounting frame, and the chassis structure is provided with a reinforcing connector corresponding to the mounting ears. The reinforcing connector, the mounting ears, and the first frame or the second frame are connected as a whole by fasteners. The reinforcing connector is also used for connection to the front leaf spring and rear bracket of the vehicle.

7. The chassis structure according to any one of claims 1 to 6, characterized in that: The battery mounting frame further includes a protective plate covering the truss structure.

8. The chassis structure according to claim 7, characterized in that: The protective plate and the truss structure are welded and bonded with structural adhesive.

9. The chassis structure according to claim 7, wherein: At least one side surface of the protective plate is provided with a reinforcement layer.

10. The chassis structure according to claim 9, characterized in that: The protective plate is configured as a steel plate, and / or, The strengthening layer is configured as a polyurea coating; and / or, The thickness of the strengthening layer ranges from 0.3 mm to 1 mm.

11. A vehicle, characterized in that: Comprising the chassis structure according to any one of claims 1 to 10.

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