Front auxiliary frame structure and vehicle with same

Abstract

The embodiment of the invention provides a front auxiliary frame structure and a vehicle with the same. The front auxiliary frame structure is characterized in that a first front longitudinal beam body is connected with the front end of a floor body in a welded mode; the first front auxiliary frame mounting plate is connected with the first front longitudinal beam body in a welding manner; the first outer side auxiliary frame mounting nut seat is connected with the first front auxiliary frame mounting plate in a welding manner; the first front auxiliary frame rear mounting reinforcing plate is welded with the first front longitudinal beam body; the first cavity is formed among the first front auxiliary frame mounting plate, the first front longitudinal beam body, the first front auxiliary frame rear mounting reinforcing plate and the first front auxiliary frame mounting seat; the first side of the first battery pack mounting plate is in welded connection with the first front auxiliary frame mounting seat; the second cavity is formed among the first front subframe mounting base, the first battery pack mounting plate and the first front subframe rear mounting reinforcing plate. According to the technical scheme, the technical problem that the dynamic stiffness of the mounting point of the middle-front auxiliary frame in the related technology is poor is effectively solved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a front subframe structure and a vehicle having the same. Background Technology

[0002] With the fast pace of modern life and continuous technological advancements, people's demands for travel are also increasing, making cars an indispensable tool. Along with the development and competition in the automotive industry and the rising demands of consumers, vehicle comfort has become a primary focus for consumers. Currently, NVH (Noise, Vibration, and Harshness) is one of the most pressing issues in the automotive industry. Furthermore, besides its direct relationship with user experience, NVH is also related to vehicle quality. Therefore, NVH has become a key indicator for measuring automotive manufacturing standards, requiring automakers to make sufficient improvements in the NVH performance of their vehicles.

[0003] As a core load-bearing component of the chassis, the front subframe of a car directly bears more than 70% of the vehicle's lateral loads and dominates the vibration transmission path. Road surface excitation passes through three levels of systems: tires, suspension, and subframe, ultimately coupling to the vehicle floor via the rubber bushing mounting point, exciting floor structural resonance, and transforming into tactile vibrations of the steering wheel / seat and interior noise. The dynamic stiffness characteristics of this mounting point directly determine the amplitude of the transfer function, becoming a core control node for NVH performance.

[0004] Traditional solutions employ static reinforcement methods such as localized thickening or simple rib arrangements, which have significant technical limitations: on the one hand, they increase mass, affecting fuel economy; on the other hand, they make it difficult to achieve precise control of frequency response characteristics. This structural defect can trigger multiple negative effects, including but not limited to: increased sensitivity to transmission paths, dynamic drift of suspension geometry parameters, interference vibrations in the braking / steering systems, and related problems such as abnormal wear of connecting parts. These factors collectively constrain the vehicle's NVH quality and handling stability.

[0005] There is currently no good solution to the above problems. Summary of the Invention

[0006] This application provides a front subframe structure and a vehicle having the same, to at least solve the technical problem of poor dynamic stiffness at the front subframe mounting point.

[0007] According to one aspect of the embodiments of this application, a front subframe structure is provided, including: a floor body; a first front longitudinal beam body, welded to the front end of the floor body; a first front subframe mounting plate, welded to the first front longitudinal beam body; a first outer subframe mounting nut seat, welded to the first front subframe mounting plate; a first front subframe rear mounting reinforcement plate, welded to the first front longitudinal beam body; a first inner subframe mounting nut seat, welded to the first front subframe rear mounting reinforcement plate; and a first front subframe mounting seat, disposed above the first outer subframe mounting nut seat and the first inner subframe mounting nut seat, and connected to the first outer subframe. The mounting nut seat and the first inner subframe mounting nut seat are both welded together; the first cavity is formed between the first front subframe mounting plate, the first front longitudinal beam body, the first front subframe rear mounting reinforcement plate, and the first front subframe mounting seat; the first battery pack mounting plate has its first side welded to the first front subframe mounting seat; the front baffle is connected to the first front longitudinal beam body and located in front of the floor body; the center channel crossbeam is located below the front baffle and welded to the second side of the first battery pack mounting plate; the second cavity is formed between the first front subframe mounting seat, the first battery pack mounting plate, and the first front subframe rear mounting reinforcement plate.

[0008] Furthermore, the front subframe structure also includes a second front longitudinal beam body, a second front subframe mounting plate, a second outer subframe mounting nut seat, a second front subframe mounting seat, a second inner subframe mounting nut seat, a second front subframe rear mounting reinforcement plate, and a second battery pack mounting plate. The second front longitudinal beam body is welded to the floor body and located in front of the floor body. The second front subframe mounting plate is welded to the second front longitudinal beam body. The second outer subframe mounting nut seat is welded to the second front subframe mounting plate. The second front subframe mounting seat is welded to the second outer subframe mounting nut seat. The second inner subframe... The subframe mounting nut seat is welded to the second front subframe mounting seat; the second front subframe rear mounting reinforcement plate is set on the second front longitudinal beam body, the second front subframe rear mounting reinforcement plate is welded to the second inner subframe mounting nut seat, the second side of the second battery pack mounting plate is welded to the second front subframe mounting seat, the second side of the second battery pack mounting plate is welded to the center channel crossbeam, a third cavity is formed between the second front subframe mounting plate and the second front subframe mounting seat, and a fourth cavity is formed between the second front subframe mounting seat, the second battery pack mounting plate and the second front subframe rear mounting reinforcement plate.

[0009] Furthermore, the first front longitudinal beam body includes two plates spaced apart vertically, and the first front subframe mounting plate includes a horizontal plate portion and a vertical plate portion. The vertical plate portion is connected to the horizontal plate portion and extends downward. Both the horizontal plate portion and the vertical plate portion are connected to the two plates respectively.

[0010] Furthermore, the first side of the rear mounting reinforcement plate of the first front subframe is welded to the body of the first front longitudinal beam, and the second side of the rear mounting reinforcement plate of the first front subframe is welded to the mounting nut seat of the first inner subframe. The rear mounting reinforcement plate of the first front subframe is located above the mounting seat of the first front subframe.

[0011] Furthermore, the rear mounting reinforcement plate of the first front subframe is inclined, and the distance between the rear mounting reinforcement plate of the first front subframe and the floor body gradually increases in the direction from the first front longitudinal beam body to the second front longitudinal beam body.

[0012] Furthermore, the first battery pack mounting plate includes an inclined plate, a first upright plate, and a second upright plate. The first upright plate and the second upright plate are located on both sides of the inclined plate. The first upright plate extends toward the floor body, and the second upright plate extends toward the floor body.

[0013] Furthermore, in the direction from the first front longitudinal beam body to the second front longitudinal beam body, the distance between the inclined plate and the floor body gradually decreases.

[0014] Furthermore, the front subframe structure also includes a front longitudinal and transverse beam support plate, which is disposed on the surface of the first front longitudinal beam body away from the second front longitudinal beam body.

[0015] Furthermore, the front subframe structure also includes a front longitudinal beam cover plate, which is disposed on the surface of the first front longitudinal beam body away from the second front longitudinal beam body, and is disposed adjacent to the front longitudinal beam support plate.

[0016] According to another aspect of the embodiments of this application, a vehicle is also provided, including a front subframe structure, wherein the front subframe structure is the aforementioned front subframe structure.

[0017] In this embodiment, the first front longitudinal beam body is welded to the front end of the floor body. The first front subframe mounting plate is welded to the first front longitudinal beam body. The first outer subframe mounting nut seat is welded to the first front subframe rear mounting reinforcement plate. The first front subframe mounting seat is welded to both the first outer subframe mounting nut seat and the first inner subframe mounting nut seat. The first side of the first battery pack mounting plate is welded to the first front subframe mounting seat. The front baffle is connected to the first front longitudinal beam body and located in front of the floor body; the central channel crossbeam is located below the front baffle and welded to the second side of the first battery pack mounting plate. A first cavity is formed between the first front subframe mounting plate, the first front longitudinal beam body, the first front subframe rear mounting reinforcement plate, and the first front subframe mounting seat; a second cavity is formed between the first front subframe mounting seat, the first battery pack mounting plate, and the first front subframe rear mounting reinforcement plate. Through the above configuration, the first cavity and the second cavity can effectively improve dynamic stiffness and meet the integrated installation requirements of components such as motors, electronic controls, and wiring harnesses. Meanwhile, the layout of the first and second cavities can absorb energy to achieve buffering. Furthermore, the cooperation of the first front subframe mounting plate, the first front longitudinal beam body, the first front subframe rear mounting reinforcement plate, and the first front subframe mounting seat, as well as the cooperation of the first front subframe mounting seat, the first battery pack mounting plate, and the first front subframe rear mounting reinforcement plate, effectively improves the structural strength. Therefore, the technical solution of this application effectively solves the technical problem of poor dynamic stiffness at the front subframe mounting point in related technologies. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a top view schematic diagram of an optional front subframe structure according to an embodiment of this application;

[0020] Figure 2 yes Figure 1 A three-dimensional structural diagram of the front subframe structure;

[0021] Figure 3 yes Figure 2 A partial structural diagram of the front subframe structure. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] like Figure 1 and Figure 3As shown, in this embodiment, the front subframe structure includes: a floor body 10, a first front longitudinal beam body 21, a first front subframe mounting plate 31, a first outer subframe mounting nut seat 41, a first front subframe rear mounting reinforcement plate 51, a first inner subframe mounting nut seat 61, a first front subframe mounting seat 71, a first battery pack mounting plate 81, a front baffle 91, and a center channel crossbeam 92. The first front longitudinal beam body 21 is welded to the front end of the floor body 10. The first front subframe mounting plate 31 is welded to the first front longitudinal beam body 21. The first outer subframe mounting nut seat 41 is welded to the first front subframe mounting plate 31. The first front subframe rear mounting reinforcement plate 51 is welded to the first front longitudinal beam body 21. The first inner subframe mounting nut seat 61 is welded to the first front subframe rear mounting reinforcement plate 51. The first front subframe mounting seat 71 is disposed above the first outer subframe mounting nut seat 41 and the first inner subframe mounting nut seat 61, and is welded to both the first outer subframe mounting nut seat 41 and the first inner subframe mounting nut seat 61. A first cavity is formed between the first front subframe mounting plate 31, the first front longitudinal beam body 21, the first front subframe rear mounting reinforcement plate 51, and the first front subframe mounting seat 71. The first side of the first battery pack mounting plate 81 is welded to the first front subframe mounting seat 71. The front baffle 91 is connected to the first front longitudinal beam body 21 and is located on the front side of the floor body 10. The center channel crossbeam 92 is located below the front baffle 91 and is welded to the second side of the first battery pack mounting plate 81. A second cavity is formed between the first front subframe mounting seat 71, the first battery pack mounting plate 81, and the first front subframe rear mounting reinforcement plate 51.

[0025] In this embodiment, the first front longitudinal beam body 21 is welded to the front end of the floor body 10. The first front subframe mounting plate 31 is welded to the first front longitudinal beam body 21. The first outer subframe mounting nut seat 41 is welded to the first front subframe rear mounting reinforcement plate 51. The first front subframe mounting seat 71 is welded to both the first outer subframe mounting nut seat 41 and the first inner subframe mounting nut seat 61. The first side of the first battery pack mounting plate 81 is welded to the first front subframe mounting seat 71. The front baffle 91 is connected to the first front longitudinal beam body 21 and is located on the front side of the floor body 10; the center channel crossbeam 92 is located below the front baffle 91 and is welded to the second side of the first battery pack mounting plate 81. A first cavity is formed between the first front subframe mounting plate 31, the first front longitudinal beam body 21, the first front subframe rear mounting reinforcement plate 51, and the first front subframe mounting seat 71. A second cavity is formed between the first front subframe mounting seat 71, the first battery pack mounting plate 81, and the first front subframe rear mounting reinforcement plate 51. Through the above arrangement, the first and second cavities effectively improve dynamic stiffness and meet the integrated installation requirements of components such as motors, electronic controls, and wiring harnesses. Simultaneously, the layout of the first and second cavities absorbs energy for buffering. Furthermore, the cooperation between the first front subframe mounting plate 31, the first front longitudinal beam body 21, the first front subframe rear mounting reinforcement plate 51, and the first front subframe mounting seat 71, as well as the cooperation between the first front subframe mounting seat 71, the first battery pack mounting plate 81, and the first front subframe rear mounting reinforcement plate 51, effectively improves the structural strength. Therefore, the technical solution of this embodiment effectively solves the technical problem of poor dynamic stiffness at the front subframe mounting point in related technologies.

[0026] Specifically, by setting a first front longitudinal beam body 21 at the front end of the floor body 10, and welding a first front subframe mounting plate 31 and a first outer subframe mounting nut seat 41 onto it, and simultaneously mounting a reinforcing plate 51 at the rear of the first front subframe, forming a first cavity with the first inner subframe mounting nut seat 61 and the first front subframe mounting seat 71, the mounting point structure is strengthened. This improves the structural rigidity and vibration resistance of the front subframe mounting point. Meanwhile, the first front subframe mounting seat 71, the first battery pack mounting plate 81, and the first front subframe rear mounting reinforcing plate 51 form a second cavity, which improves the modal characteristics of the entire structure, avoids overlap with in-vehicle noise and vibration-sensitive frequencies, thereby improving the vehicle's NVH performance and enhancing handling stability and ride comfort. In other words, the technical solution of this embodiment balances structural reinforcement and spatial arrangement.

[0027] like Figures 1 to 3As shown, in this embodiment, the front subframe structure further includes a second front longitudinal beam body 22, a second front subframe mounting plate, a second outer subframe mounting nut seat 42, a second front subframe mounting seat 72, a second inner subframe mounting nut seat 62, a second front subframe rear mounting reinforcement plate, and a second battery pack mounting plate 82. The second front longitudinal beam body 22 is welded to the floor body 10 and is located on the front side of the floor body 10. The second front subframe mounting plate is welded to the second front longitudinal beam body 22. The second outer subframe mounting nut seat 42 is welded to the second front subframe mounting plate. The second front subframe mounting seat 72 is welded to the second outer subframe mounting nut seat 42. The second inner subframe mounting nut seat 62 is welded to the second front subframe mounting seat 72; the second front subframe rear mounting reinforcement plate is set on the second front longitudinal beam body 22, and the second front subframe rear mounting reinforcement plate is welded to the second inner subframe mounting nut seat 62; the second side of the second battery pack mounting plate 82 is welded to the second front subframe mounting seat 72; the second side of the second battery pack mounting plate 82 is welded to the central channel crossbeam 92; a third cavity is formed between the second front subframe mounting plate and the second front subframe mounting seat 72; and a fourth cavity is formed between the second front subframe mounting seat 72, the second battery pack mounting plate 82, and the second front subframe rear mounting reinforcement plate.

[0028] By setting up a second front longitudinal beam body 22, a second front subframe mounting plate, a second outer subframe mounting nut seat 42, a second front subframe mounting seat 72, a second inner subframe mounting nut seat 62, a second front subframe rear mounting reinforcement plate, and a second battery pack mounting plate 82, a symmetrical double-sided structure is formed, enhancing the overall rigidity of the front subframe area. The second front longitudinal beam body 22 is welded to the floor body 10 and is located on the front side of the floor body 10, forming a symmetrical relationship with the first longitudinal beam body and the first floor body. The second front subframe mounting plate is welded to the second front longitudinal beam body 22, and the second outer subframe mounting nut seat 42 is connected to it, forming a stable connection through the second front subframe mounting seat 72. The second inner subframe mounting nut seat 62 is welded to the second front subframe rear mounting reinforcement plate, and the second side of the second battery pack mounting plate 82 is connected to the second front subframe mounting seat 72 and welded to the central channel crossbeam 92, together forming a double-sided reinforcement frame. Through the above design, the third cavity formed between the second front subframe mounting plate and the second front subframe mounting seat 72, and the fourth cavity formed between the second front subframe mounting seat 72, the second battery pack mounting plate 82 and the second front subframe rear mounting reinforcement plate, not only increase the dynamic stiffness of the front subframe structure, but also effectively improve the front subframe mounting mode by adjusting the design of the closed cavities, thereby further optimizing the vehicle's NVH performance.

[0029] like Figure 1 and Figure 3 As shown, in this embodiment, the first front longitudinal beam body 21 includes two plates spaced apart vertically. The first front subframe mounting plate 31 includes a horizontal plate portion 311 and a vertical plate portion 312. The vertical plate portion 312 is connected to the horizontal plate portion 311 and extends downward. Both the horizontal plate portion 311 and the vertical plate portion 312 are connected to the two plates respectively. The design of the structure of the first front subframe mounting plate 31 not only enhances the stability of the structure but also achieves a tight connection with the first front longitudinal beam body 21. The horizontal plate portion 311 and the vertical plate portion 312 are welded and fixed to the two plates of the first front longitudinal beam body 21, forming a closed section, which further improves the rigidity of the structure.

[0030] like Figure 1 and Figure 3 As shown, in this embodiment, the first side of the first front subframe rear mounting reinforcement plate 51 is welded to the first front longitudinal beam body 21, and the second side of the first front subframe rear mounting reinforcement plate 51 is welded to the first inner subframe mounting nut seat 61. The first front subframe rear mounting reinforcement plate 51 is located above the first front subframe mounting seat 71. This design, through direct welding of the first front subframe rear mounting reinforcement plate 51 to the first front longitudinal beam body 21, makes the connection more stable, thereby effectively increasing the dynamic stiffness of the mounting point. Simultaneously, by adjusting the position of the first front subframe rear mounting reinforcement plate 51, it achieves effective spatial alignment with the subframe mounting seat, thus realizing structural optimization.

[0031] During vehicle operation, the aforementioned design better resists dynamic loads from the road surface, reduces vibration transmission, and thus improves NVH performance within the vehicle. Furthermore, this design also reduces overall weight, thereby improving fuel efficiency.

[0032] like Figure 1 and Figure 3 As shown, in this embodiment, the rear mounting reinforcement plate 51 of the first front subframe is inclined, and the distance between the rear mounting reinforcement plate 51 of the first front subframe and the floor body 10 gradually increases in the direction from the first front longitudinal beam body 21 to the second front longitudinal beam body 22. The above design optimizes the force transmission path, especially the enhancement of the Y-direction force transmission path, which helps to improve the overall dynamic stiffness of the front subframe mounting point.

[0033] Furthermore, through the inclined design, the first front subframe rear mounting reinforcement plate 51 can make full use of the limited space while ensuring the necessary strength and rigidity, forming a more effective force flow guidance, thereby improving the dynamic rigidity of the subframe mounting point and improving the vehicle's NVH performance.

[0034] like Figure 1 and Figure 3As shown, in this embodiment, the first battery pack mounting plate 81 includes an inclined plate 811, a first upright plate 812, and a second upright plate 813. The first upright plate 812 and the second upright plate 813 are located on both sides of the inclined plate 811. The first upright plate 812 extends toward the floor body 10, and the second upright plate 813 extends toward the floor body 10. The aforementioned first battery pack mounting plate 81 forms a three-dimensional structure, which not only increases the contact area with the floor body 10 but also forms a stable support frame. This effectively disperses the load generated during the installation of the battery pack, thereby improving the structural strength and rigidity of the front subframe area.

[0035] like Figure 1 and Figure 3 As shown, in this embodiment, the distance between the inclined plate 811 and the floor body 10 gradually decreases in the direction from the first front longitudinal beam body 21 to the second front longitudinal beam body 22. The arrangement of the inclined plate 811 optimizes the force transmission path and achieves a gradual enhancement of the dynamic stiffness of the connection area.

[0036] like Figure 1 and Figure 2 As shown, in this embodiment, the front subframe structure also includes a front longitudinal and transverse beam support plate 93, which is disposed on the surface of the first front longitudinal beam body 21 away from the second front longitudinal beam body 22. The aforementioned front longitudinal and transverse beam support plate 93 provides support, thereby effectively improving the overall rigidity and stability of the front subframe mounting point area. This not only enhances local bending resistance and torsional stiffness but also, by altering the dynamic response characteristics of the structure, enables the control of the subframe mounting mode and suppresses vibration amplification at specific frequencies, thereby improving NVH performance during vehicle operation.

[0037] like Figure 1 and Figure 2 As shown, in this embodiment, the front subframe structure also includes a front longitudinal beam cover plate 94. The front longitudinal beam cover plate 94 is disposed on the surface of the first front longitudinal beam body 21 away from the second front longitudinal beam body 22, and is disposed adjacent to the front longitudinal and transverse beam support plate 93. The above design further enhances the rigidity and stability of the front longitudinal beam area, and through its synergistic effect with the front longitudinal and transverse beam support plate 93, a more robust closed cavity structure is formed.

[0038] The front subframe structure design in this embodiment adopts a combination of double-cavity longitudinal beams and front longitudinal and transverse beam support plates 93, which not only improves dynamic stiffness but also optimizes the force transmission path, effectively enhancing the support for the front subframe mounting points, thereby improving the overall NVH performance.

[0039] The technical solution of this embodiment has the following advantages:

[0040] 1. Balance between space and performance: The combination structure of double-cavity longitudinal beams and front longitudinal and transverse beam support plates 93 forms a closed section design, which increases the dynamic stiffness by more than 40% in a limited space, while meeting the integrated installation requirements of components such as motors, electrical controls, and wiring harnesses.

[0041] 2. Process and cost advantages: By using U-shaped plate welding and cavity cross-section design, the number of welding points is reduced by 20% and the weight is reduced by 15-20%, significantly reducing manufacturing costs.

[0042] 3. Improved NVH performance: Through the reinforcement of the front subframe mounting sleeve and the design of the center channel crossbeam end, the front subframe mounting mode is improved by more than 15%, effectively improving road noise and handling stability inside the vehicle.

[0043] According to another aspect of this application, a vehicle is provided, wherein the vehicle of this embodiment includes a front subframe structure, the front subframe structure being the aforementioned front subframe structure. The vehicle employs the aforementioned front subframe structure, thereby achieving a significant increase in dynamic stiffness in the front subframe mounting point area, effectively enhancing the rigidity and vibration resistance at the connection between the subframe and the vehicle body.

[0044] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0045] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0046] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0047] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0048] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0049] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A front subframe structure, characterized in that, include: Floor body (10); The first front longitudinal beam body (21) is welded to the front end of the floor body (10); The first front subframe mounting plate (31) is welded to the first front longitudinal beam body (21); The first outer subframe mounting nut seat (41) is welded to the first front subframe mounting plate (31); The first front subframe is fitted with a reinforcing plate (51) which is welded to the first front longitudinal beam body (21); The first inner subframe mounting nut seat (61) is welded to the first front subframe rear mounting reinforcement plate (51); The first front subframe mounting seat (71) is located above the first outer subframe mounting nut seat (41) and the first inner subframe mounting nut seat (61), and is welded to both the first outer subframe mounting nut seat (41) and the first inner subframe mounting nut seat (61). The first cavity is formed between the first front subframe mounting plate (31), the first front longitudinal beam body (21), the first front subframe rear mounting reinforcement plate (51), and the first front subframe mounting seat (71); The first battery pack mounting plate (81) is welded to the first front subframe mounting seat (71) on its first side. The front baffle (91) is connected to the first front longitudinal beam body (21) and located on the front side of the floor body (10); The middle channel crossbeam (92) is located below the front baffle (91) and is welded to the second side of the first battery pack mounting plate (81); The second cavity is formed between the first front subframe mounting base (71), the first battery pack mounting plate (81), and the first front subframe rear mounting reinforcement plate (51).

2. The front subframe structure according to claim 1, characterized in that, The front subframe structure also includes a second front longitudinal beam body (22), a second front subframe mounting plate, a second outer subframe mounting nut seat (42), a second front subframe mounting seat (72), a second inner subframe mounting nut seat (62), a second front subframe rear mounting reinforcement plate, and a second battery pack mounting plate (82). The second front longitudinal beam body (22) is welded to the floor body (10) and located on the front side of the floor body (10). The second front subframe mounting plate is welded to the second front longitudinal beam body (22). The second outer subframe mounting nut seat (42) is welded to the second front subframe mounting plate. The second front subframe mounting seat (72) is welded to the second outer subframe mounting nut seat (42). The second inner subframe... The mounting nut seat (62) is welded to the second front subframe mounting seat (72); the second front subframe rear mounting reinforcement plate is set on the second front longitudinal beam body (22), the second front subframe rear mounting reinforcement plate is welded to the second inner subframe mounting nut seat (62), the second side of the second battery pack mounting plate (82) is welded to the second front subframe mounting seat (72), the second side of the second battery pack mounting plate (82) is welded to the middle channel crossbeam (92), a third cavity is formed between the second front subframe mounting plate and the second front subframe mounting seat (72), and a fourth cavity is formed between the second front subframe mounting seat (72), the second battery pack mounting plate (82) and the second front subframe rear mounting reinforcement plate.

3. The front subframe structure according to claim 1, characterized in that, The first front longitudinal beam body (21) includes two plates spaced apart vertically. The first front subframe mounting plate (31) includes a horizontal plate (311) and a vertical plate (312). The vertical plate (312) is connected to the horizontal plate (311) and extends downward. The horizontal plate (311) and the vertical plate (312) are respectively connected to the two plates.

4. The front subframe structure according to claim 1, characterized in that, The first side of the first front subframe rear mounting reinforcement plate (51) is welded to the first front longitudinal beam body (21), and the second side of the first front subframe rear mounting reinforcement plate (51) is welded to the first inner subframe mounting nut seat (61). The first front subframe rear mounting reinforcement plate (51) is located above the first front subframe mounting seat (71).

5. The front subframe structure according to claim 2, characterized in that, The first front subframe rear mounting reinforcement plate (51) is inclined, and the distance between the first front subframe rear mounting reinforcement plate (51) and the floor body (10) gradually increases in the direction from the first front longitudinal beam body (21) to the second front longitudinal beam body (22).

6. The front subframe structure according to claim 2, characterized in that, The first battery pack mounting plate (81) includes an inclined plate (811), a first upright plate (812), and a second upright plate (813). The first upright plate (812) and the second upright plate (813) are located on both sides of the inclined plate (811). The first upright plate (812) extends toward the floor body (10), and the second upright plate (813) extends toward the floor body (10).

7. The front subframe structure according to claim 6, characterized in that, In the direction from the first front longitudinal beam body (21) to the second front longitudinal beam body (22), the distance between the inclined plate (811) and the floor body (10) gradually decreases.

8. The front subframe structure according to claim 2, characterized in that, The front subframe structure also includes a front longitudinal and transverse beam support plate (93), which is disposed on the surface of the first front longitudinal beam body (21) away from the second front longitudinal beam body (22).

9. The front subframe structure according to claim 8, characterized in that, The front subframe structure also includes a front longitudinal beam cover plate (94), which is disposed on the surface of the first front longitudinal beam body (21) away from the second front longitudinal beam body (22), and is disposed adjacent to the front longitudinal beam support plate (93).

10. A vehicle, characterized in that, It includes a front subframe structure, wherein the front subframe structure is the front subframe structure according to any one of claims 1 to 9.

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