Vehicle body structure and vehicle
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-29
- Publication Date
- 2026-03-10
Smart Images
Figure CN223982576U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle technology, and in particular to a vehicle body structure; it also relates to a vehicle equipped with the vehicle body structure. Background Technology
[0002] With the rise of new energy vehicles, more and more vehicles are equipped with battery packs. Battery packs are typically designed in a flat shape to reduce their footprint on the vehicle's underbody. In existing vehicles, especially high-performance vehicles with low-slung, streamlined bodies, the battery pack is generally installed between the side sill beams and below the front floor. This arrangement not only requires additional space, compromising the compactness of the vehicle's structure, but also, in the event of a collision, primarily relies on the sill beams for force transmission and dispersion, resulting in a single force transmission path and hindering improvements in battery pack collision safety. Utility Model Content
[0003] In view of this, the present invention aims to propose a vehicle body structure to improve the structural compactness and collision safety of the battery pack arrangement.
[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0005] A vehicle body structure includes a vehicle cabin, wherein the vehicle cabin has a front floor and a rear bulkhead connected to the rear end of the front floor; the front floor has an upwardly bulging central channel, and the bottom of the central channel has a first battery pack arrangement space, and the rear of the rear bulkhead has a second battery pack arrangement space; the rear end of the first battery pack arrangement space communicates with the second battery pack arrangement space, and from the vertical direction of the whole vehicle, the first battery pack arrangement space and the second battery pack arrangement space are arranged in a "T" shape.
[0006] Furthermore, the top of the central channel is provided with a reinforcing structure, and the reinforcing structure extends from the front end of the central channel to the rear end of the central channel.
[0007] Furthermore, the front floor is made of carbon fiber composite material and includes a front floor upper plate and a front floor lower plate connected together; the top of the central channel forms a cavity between the front floor upper plate and the front floor lower plate, and the reinforcing structure is formed by structural foam filling the cavity.
[0008] Furthermore, battery pack side mounting points are respectively provided on the left and right sides of the bottom of the central channel, and a first battery pack rear mounting point is provided at the rear end of the front floor; both the battery pack side mounting points on both sides and the first battery pack rear mounting point include structural foam filling between the upper and lower panels of the front floor, and mounting inserts embedded in the structural foam.
[0009] Furthermore, a blocking plate is provided at the front end of the first battery pack arrangement space, and a groove with an opening facing the front of the vehicle is formed on the upper part of the blocking plate, and a front mounting point for the battery pack is provided at the bottom of the blocking plate.
[0010] Furthermore, the blocking plate is made of carbon fiber composite material, and a closed inner cavity is formed at the bottom of the blocking plate. The front mounting point of the battery pack includes structural foam filled in the closed inner cavity and mounting inserts embedded in the structural foam.
[0011] Furthermore, a horizontally arranged platform structure is formed on the rear bulkhead, the lower part of the rear bulkhead is connected to the front side of the platform structure, and the upper part of the rear bulkhead is connected to the rear side of the platform structure; in the vertical direction of the vehicle, the platform structure is not lower than the central channel, and a space for arranging the second battery pack is formed below the platform structure.
[0012] Furthermore, the upper part of the rear panel has a protrusion that bulges forward towards the front of the vehicle, and the protrusion is located behind the center channel when viewed from the vertical direction of the vehicle; and / or, the rear panel is made of carbon fiber composite material.
[0013] Furthermore, it also includes rear engine compartment longitudinal beams located on the left and right sides; both rear engine compartment longitudinal beams are connected to the rear of the vehicle cabin, and the second battery pack arrangement space is located between the two rear engine compartment longitudinal beams; wherein, the two rear engine compartment longitudinal beams are respectively provided with rear mounting points for the second battery pack, and / or, a crossbeam located behind the second battery pack arrangement space is connected between the two rear engine compartment longitudinal beams.
[0014] Compared with the prior art, this utility model has the following advantages:
[0015] The vehicle body structure described in this utility model provides a novel battery pack arrangement by setting a first battery pack arrangement space at the bottom of the central tunnel and a second battery pack arrangement space connected to the first battery pack arrangement space at the rear of the rear panel. This not only makes full use of the vehicle body space and increases the compactness of the vehicle body structure, but also improves the collision safety of the battery pack by using the central tunnel and the rear panel to disperse the transmission of vehicle collision forces through the "T"-shaped arrangement between the first and second battery pack arrangement spaces.
[0016] Furthermore, the reinforcing structure at the top of the central tunnel increases its overall rigidity, enhancing its ability to transmit collision forces. The front floor is made of carbon fiber composite material, leveraging its high rigidity and light weight to ensure vehicle body rigidity, improve battery pack safety, and also contribute to vehicle weight reduction. The cavity between the upper and lower panels of the front floor facilitates the arrangement of the reinforcing structure; the use of structural foam in this structure provides high strength and also aids in lightweight design. The battery pack mounting points on the left and right sides of the bottom of the central tunnel, the first battery pack mounting point at the rear of the front floor, along with the structural foam and mounting inserts, ensure the reliability of the battery pack's installation on the vehicle body.
[0017] Furthermore, the use of a blocking plate improves the safety of the battery pack's front end. The grooves on the blocking plate increase its structural strength, and the battery pack mounting point at the bottom of the blocking plate ensures reliable mounting of the front battery pack to the vehicle body. The blocking plate is made of carbon fiber composite material, giving it high rigidity to ensure the rigidity of the battery pack mounting point while also contributing to weight reduction. The horizontal platform structure on the rear panel not only serves as storage space but also increases the overall structural strength and rigidity of the rear panel, improving its collision response performance.
[0018] Furthermore, the raised section on the upper part of the rear bulkhead increases its structural strength, further enhancing its collision resistance. The rear bulkhead is made of carbon fiber composite material, leveraging its high stiffness and light weight to ensure its rigidity and ability to transmit impact forces, while also contributing to the weight reduction of the rear bulkhead and the vehicle body. This allows the second battery pack to be positioned between the longitudinal beams of the rear engine compartment on both sides, increasing the safety of the battery pack's sides. Simultaneously, setting the rear mounting point of the second battery pack on the longitudinal beams of the rear engine compartment better ensures the reliability of the rear of the battery pack's placement on the vehicle body. The presence of a crossbeam behind the second battery pack's mounting space further improves the battery pack's safety in rear-end collisions.
[0019] In addition, another objective of this utility model is to provide a vehicle having the body structure described above.
[0020] The vehicle described in this utility model, by setting the above-mentioned body structure, helps to improve the compactness of the battery pack arrangement on the vehicle and the collision safety. Attached Figure Description
[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0022] Figure 1 This is a schematic diagram of the vehicle body structure described in an embodiment of the present invention from one perspective;
[0023] Figure 2 This is a schematic diagram of the vehicle body structure described in an embodiment of the present invention from another perspective;
[0024] Figure 3 This is a schematic diagram of the projection of the first battery pack arrangement space and the second battery pack arrangement space in the vertical direction of the vehicle according to the embodiments of this utility model.
[0025] Figure 4 This is a schematic diagram of the projection of the central channel and rear panel of the present utility model in the vertical direction of the vehicle.
[0026] Figure 5 This is a schematic diagram of the front floor structure of the present invention from one perspective.
[0027] Figure 6 This is a schematic diagram of the front floor structure from another perspective, as described in an embodiment of the present invention.
[0028] Figure 7 for Figure 6 Sectional view along direction AA in the middle;
[0029] Figure 8 This is a schematic diagram of the structure of the front floor lower plate according to an embodiment of the present utility model;
[0030] Figure 9 This is a schematic diagram of the structure of the front floor plate described in an embodiment of the present invention;
[0031] Figure 10 This is a schematic diagram of the front floor lower plate and reinforcing structure according to an embodiment of the present utility model;
[0032] Figure 11 This is a schematic diagram of the reinforcing structure described in an embodiment of the present utility model;
[0033] Figure 12 This is a schematic diagram of the structure of the first structured foam described in an embodiment of the present invention;
[0034] Figure 13 This is a schematic diagram of the structure of the blocking plate described in an embodiment of the present utility model;
[0035] Figure 14 This is a schematic diagram of the second structure foam described in an embodiment of the present invention;
[0036] Figure 15 This is a schematic diagram of the structure of the rear panel according to an embodiment of the present utility model.
[0037] Explanation of reference numerals in the attached figures:
[0038] 1. Front floor; 2. Front bulkhead; 3. Rear bulkhead; 4. Reinforcing structure; 5. Partition plate; 6. Sill beam; 7. Rear engine compartment longitudinal beam;
[0039] 100. Central channel; 200. First battery pack arrangement space; 300. Second battery pack arrangement space;
[0040] 101. Front floor upper plate; 1011. Middle channel upper plate; 1012. Second protrusion; 1013. Recessed portion; 1014. First flange; 102. Front floor lower plate; 1021. Middle channel lower plate; 1022. First protrusion; 1023. First through hole; 1024. Second flange; 103. First structural foam; 104. First mounting insert; 106. Sloping surface; 107. Third through hole; 108. Cavity; 109. Fourth mounting insert;
[0041] 301. Connecting port; 302. Platform structure; 303. Protrusion;
[0042] 401. Reinforcing block; 402. Reinforcing arm; 4021. Extension section;
[0043] 501, Groove; 502, Second structural foam; 503, Second mounting insert; 504, Second through hole;
[0044] 701. Crossbeam; 702. Reinforcing rib. Detailed Implementation
[0045] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0046] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0047] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.
[0048] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0049] This embodiment relates to a vehicle body structure that optimizes the battery pack installation method and force transmission structure to solve the problems of large space occupation and poor collision force transmission effect in the prior art.
[0050] In terms of overall structure, the vehicle body includes a vehicle cabin, which contains a front floor 1 and a rear bulkhead 3 connected to the rear end of the front floor 1. The front floor 1 has an upward-bulging central tunnel 100, and the bottom of the central tunnel 100 has a first battery pack placement space 200. The rear of the rear bulkhead 3 has a second battery pack placement space 300. The rear end of the first battery pack placement space 200 communicates with the second battery pack placement space 300, and from the vertical direction of the vehicle, the first battery pack placement space 200 and the second battery pack placement space 300 are arranged in a "T" shape.
[0051] The vehicle body structure described in this embodiment provides a novel battery pack arrangement by setting a first battery pack arrangement space 200 at the bottom of the central channel 100 and a second battery pack arrangement space 300 connected to the first battery pack arrangement space 200 at the rear of the rear panel 3. This not only makes full use of the vehicle body space and increases the compactness of the vehicle body structure, but also improves the collision safety of the battery pack by using the central channel 100 and the rear panel 3 to disperse the transmission of vehicle collision force through the "T"-shaped arrangement between the first battery pack arrangement space 200 and the second battery pack arrangement space 300.
[0052] Based on the above overview, an exemplary structure of the vehicle body structure described in this embodiment is as follows: Figures 1 to 3 As shown in the diagram, the front end of the front floor 1 is connected to the bottom of the front bulkhead 2, and the rear end is connected to the bottom of the rear bulkhead 3. The left and right sides of the front floor 1 are connected to the door sill beams 6 respectively. The central passage 100 is located in the middle of the width direction of the front floor 1 and extends along the front-rear direction of the vehicle, so that the front end of the central passage 100 is connected to the front bulkhead 2 and the rear end is connected to the rear bulkhead 3. This helps to improve the connection and force transmission effect between the front floor 1 and the front bulkhead 2 and the rear bulkhead 3.
[0053] like Figure 3 As shown in the figure, when projected in the vertical direction of the vehicle, the first battery pack arrangement space 200 extends along the front-rear direction of the vehicle, and the second battery pack arrangement space 300 extends along the left-right direction of the vehicle. The rear end of the first battery pack arrangement space 200 is connected to the middle of the second battery pack arrangement space 300, so that the two form a "T" shape.
[0054] like Figure 4 As shown, the projections of the central channel 100 and the rear panel 3 in the vertical direction of the vehicle form a "T"-shaped force transmission channel. In the event of a vehicle collision, especially a rear-end collision, the collision force can be dispersed and transmitted through the "T"-shaped central channel 100 and rear panel 3, reducing the impact on the battery pack within the battery pack's layout space and thus improving the battery pack's safety.
[0055] In one arrangement of the battery pack, the battery pack can be T-shaped, with both battery packs installed in the first battery pack arrangement space 200 and the second battery pack arrangement space 300. In another arrangement, there can be two battery packs, each in a straight line. One battery pack is placed in the first battery pack arrangement space 200, and the other in the second battery pack arrangement space 300, forming a T-shape when installed. In specific implementation, the shape and specifications of the battery packs can be determined according to usage requirements.
[0056] In a preferred embodiment, the top of the central channel 100 is provided with a reinforcing structure 4, which extends from the front end of the central channel 100 to the rear end. By providing the reinforcing structure 4, the overall rigidity of the central channel 100 can be increased, thereby enhancing its ability to transmit collision forces.
[0057] In terms of specific structure, the front floor 1 is made of carbon fiber composite material and includes a front floor upper plate 101 and a front floor lower plate 102 connected together. A cavity 108 is formed at the top of the central channel 100 between the front floor upper plate 101 and the front floor lower plate 102, and the reinforcing structure 4 is formed by structural foam filling the cavity 108.
[0058] The front floor 1 is made of carbon fiber composite material, which can be used to ensure the rigidity of the vehicle body and improve the safety of the battery pack by taking advantage of the high rigidity and light weight of carbon fiber composite material. At the same time, it is also conducive to improving the lightweight level of the vehicle body. The cavity 108 between the upper front floor 101 and the lower front floor 102 is conducive to the arrangement of the reinforcing structure 4. Meanwhile, the structural foam helps to improve the mechanical properties of the reinforcing structure 4 and also facilitates the lightweight design.
[0059] like Figures 7 to 9As shown, to facilitate the forming of the central channel 100, the central channel 100 includes a central channel upper plate 1011 and a central channel lower plate 1021 connected together. The central channel upper plate 1011 is located on the front floor upper plate 101 and bulges upwards. The central channel lower plate 1021 is located on the front floor lower plate 102 and bulges upwards.
[0060] In the connected state, the sidewall of the upper middle channel plate 1011 abuts against the sidewall of the lower middle channel plate 1021. The top of the upper middle channel plate 1011 and the top of the lower middle channel plate 1021 are spaced apart, and the aforementioned cavity 108 is formed between them. In this embodiment, the arrangement of the upper front floor plate 101 and the lower front floor plate 102, as well as the upper middle channel plate 1011 and the lower middle channel plate 1021, facilitates the forming of the front floor 1 and the arrangement of the reinforcing structure 4.
[0061] The front floor upper plate 101 has upward-folded first flanges 1014 on all four edges, and the front floor lower plate 102 has upward-folded second flanges 1024 on all four edges. The first flanges 1014 and the second flanges 1024 can be bonded together, thereby connecting their edges. At the same time, the four sides of the front floor 1 are connected to the surrounding components through the second flanges 1024.
[0062] like Figure 10 and Figure 11 As shown, the reinforcing structure 4 includes a reinforcing block 401 located at the rear end of the central channel 100, and reinforcing arms 402 respectively disposed at the left and right edges of the top of the central channel 100. Both reinforcing arms 402 extend from the front end of the central channel 100 to the rear end and connect to the reinforcing block 401. The reinforcing block 401 and the two reinforcing arms 402 are both located at the top of the lower plate 1021 of the central channel. This arrangement ensures the connection strength with the rear panel 3 while providing better structural strength to the central channel 100, thus further enhancing its collision force transmission capability.
[0063] In the specific arrangement, the reinforcing block 401 and the two reinforcing arms 402 are all bonded to the top of the lower plate 1021 of the central channel. Specifically, the front ends of each reinforcing arm 402 and the reinforcing block 401 are bonded to the first flange 1014 to improve the connection strength of the reinforcing structure 4. Furthermore, as... Figure 10 and Figure 11 As shown, each reinforcing arm 402 has a downwardly extending extension portion 4021 on the outer side of its front end, and the extension portion 4021 is bonded to the outer side of the lower plate 1021 of the middle channel, which helps to further improve the fixing effect of the reinforcing structure 4 at the top of the middle channel 100.
[0064] To improve the structural utilization rate of the central channel 100, such as Figure 9As shown, the upper plate 1011 of the middle channel is provided with a recessed portion 1013 that is recessed downwards, and the recessed portion 1013 is located between the two reinforcing arms 402. This arrangement makes the shape of the cavity 108 fit the shape of the reinforcing structure 4.
[0065] As a preferred implementation method, such as Figure 9 As shown, the top of the rear end of the center tunnel 100 is a sloped surface 106 that is inclined upwards and backwards towards the rear of the vehicle. The top of the reinforcing block 401 is adapted to be inclined to the sloped surface 106. That is, the top surface of the reinforcing block 401 is also inclined upwards and backwards towards the rear of the vehicle. The sloped surface 106 at the top of the rear end of the center tunnel 100 can suppress the intrusion of the rear bulkhead 3 into the passenger compartment during a collision, and can also facilitate the transmission of the collision force at the rear bulkhead 3 to the center tunnel 100, thereby improving the collision force dispersion effect.
[0066] To further improve the performance of the mid-channel 100, such as Figure 6 and Figure 9 As shown, the width of the inclined plane 106 gradually decreases from front to back in the longitudinal direction of the vehicle, while its width decreases in the lateral direction. This design makes the cross-section of the rear end of the central tunnel 100 wider at the bottom and narrower at the top, which helps to increase the support capacity of the rear end of the central tunnel 100 and improves the response to rear-end collisions. Correspondingly, the reinforcing block 401 is adapted to the inclined plane 106.
[0067] To facilitate battery pack installation, in a preferred embodiment, battery pack side mounting points are provided on the left and right sides of the bottom of the center channel 100, and a first battery pack rear mounting point is provided at the rear end of the front floor 1. Both the side battery pack mounting points and the first battery pack rear mounting point include structural foam filling the space between the upper front floor 101 and the lower front floor 102, as well as mounting inserts embedded in the structural foam. Here, the battery pack side mounting points on the left and right sides of the bottom of the center channel 100, the first battery pack mounting point at the rear end of the front floor 1, and the structural foam and mounting inserts ensure the reliability of the battery pack installation on the vehicle body.
[0068] To distinguish it from the structural foam mentioned below, in this embodiment, the structural foam filling the space between the upper front floor panel 101 and the lower front floor panel 102 on each side of the central channel 100 is referred to as the first structural foam 103. Each first structural foam 103 has a side portion and a rear portion. The side portion extends along the front-rear direction of the vehicle and is located on one side of the first battery pack arrangement space 200, while the rear portion extends along the left-right direction of the vehicle and is located on the front side of the second battery pack arrangement space 300. The battery pack side mounting point includes a first mounting insert 104 embedded in the side portion, and the first battery pack rear mounting point includes a fourth mounting insert 109 embedded in the rear portion.
[0069] In terms of detailed structure, such as Figure 7 and Figure 12 As shown, to facilitate the arrangement of the side portion of the first structural foam 103, first protrusions 1022 protruding upwards are provided on both sides of the lower plate 1021 of the central channel, and the first protrusions 1022 extend along the extension direction of the central channel 100. Corresponding to each first protrusion 1022, second protrusions 1012 are provided on both sides of the upper plate 1011 of the central channel.
[0070] The side portions of the first structural foam 103 are respectively filled in the space formed between the first protrusion 1022 and the second protrusion 1012 on the same side, and are bonded to the first protrusion 1022 or the second protrusion 1012. Multiple first mounting inserts 104 are spaced apart along the front-rear direction of the vehicle, and each first mounting insert 104 has a threaded hole. Corresponding to each first mounting insert 104, multiple first through holes 1023 are respectively provided on the top surface of the first protrusion 1022.
[0071] The fourth mounting inserts 109 are arranged in multiple intervals along the left-right direction of the vehicle. Each fourth mounting insert 109 is also provided with a threaded hole. Corresponding to each fourth mounting insert 109, a plurality of third through holes 107 are provided at the rear end of the front floor lower plate 102. The rear part of the battery pack is installed at the rear of the front floor 1 by bolts passing through itself and the third through holes 107 and being screwed to the corresponding fourth mounting inserts 109.
[0072] The first structural foam 103, the first mounting insert 104, and the fourth mounting insert 109 cooperate in a way that facilitates layout and provides a good connection. Furthermore, the battery pack's sides and rear are detachably connected to the front floor 1, which also facilitates battery pack maintenance and replacement.
[0073] like Figure 5 As shown, a blocking plate 5 is provided at the front end of the first battery pack arrangement space 200, and a groove 501 with an opening facing the front of the vehicle is formed on the upper part of the blocking plate 5. A front mounting point for the battery pack is provided at the bottom of the blocking plate 5. By setting the blocking plate 5 here, the safety of the front end of the battery pack can be improved, and the groove 501 on the blocking plate 5 can increase the structural strength of the blocking plate 5 itself. The front mounting point for the battery pack at the bottom of the blocking plate 5 can also ensure the reliability of the front part of the battery pack on the vehicle body.
[0074] In a preferred embodiment, the blocking plate 5 is made of carbon fiber composite material, and a closed inner cavity is formed at the bottom of the blocking plate 5. The battery pack front mounting point includes structural foam filled in the closed inner cavity and mounting inserts embedded in the structural foam. Here, the blocking plate 5 is made of carbon fiber composite material, which gives the blocking plate 5 high rigidity, ensuring the rigidity of the battery pack front mounting point, and also helps to reduce the weight of the blocking plate 5.
[0075] Specifically, the structural foam within the baffle plate 5 is referred to as the second structural foam 502, and the mounting insert within it is referred to as the second mounting insert 503. The second mounting insert 503 also has threaded holes. Multiple second mounting inserts 503 are spaced apart within the second structural foam 502 along the left-right direction of the vehicle, and corresponding to each second mounting insert 503, multiple second through holes 504 are provided on the bottom wall of the baffle plate 5. The front end of the battery pack is mounted on the front floor 1 by bolts passing through itself and the second through holes 504, respectively, and screwed onto the corresponding second mounting insert 503.
[0076] As a preferred implementation method, such as Figure 2 and Figure 3 As shown, the vehicle body structure also includes rear engine compartment longitudinal beams 7 located on the left and right sides. Both rear engine compartment longitudinal beams 7 are connected to the rear of the vehicle's passenger compartment, and the second battery pack placement space 300 is located between the two rear engine compartment longitudinal beams 7. The two rear engine compartment longitudinal beams 7 are each equipped with a rear mounting point for the second battery pack, ensuring the second battery pack placement space 300 is located between the two rear engine compartment longitudinal beams 7. This increases the safety of the battery pack's side components. Furthermore, providing rear mounting points for the second battery pack on the rear engine compartment longitudinal beams 7 better guarantees the reliability of the rear of the battery pack's mounting on the vehicle body.
[0077] Specifically, the front ends of each aft nacelle longitudinal beam 7 are connected to the sill beam 6 located on the same side. The aft nacelle longitudinal beam 7 can be, for example, a cast aluminum beam, and the battery pack mounting points on the aft nacelle longitudinal beam 7 can be, for example, threaded connection holes formed thereon. The battery pack located within the second battery pack arrangement space 300, through the cooperation of the rear mounting points of the first and second battery packs, helps ensure the reliable installation of the battery pack within the second battery pack arrangement space 300.
[0078] To further enhance the structural strength of the rear cabin longitudinal beam 7, such as Figure 2 As shown, the rear engine compartment longitudinal beam 7 has a weight-reducing groove extending along its length on the side facing outwards, and multiple reinforcing ribs 702 are arranged in an alternating pattern within the weight-reducing groove. The weight-reducing groove facilitates the lightweight design of the rear engine compartment longitudinal beam 7, while the reinforcing ribs 702 further enhance the strength and rigidity of the rear engine compartment longitudinal beam 7. In specific implementation, the reinforcing ribs 702, in addition to being... Figure 2 In addition to the "X" shape shown in the diagram, the multiple connection arrangements can also be in other forms.
[0079] Additionally, a crossbeam 701 located behind the second battery pack arrangement space 300 connects the longitudinal beams 7 on both sides of the rear engine compartment. This crossbeam 701 can be made of, for example, extruded aluminum profile, which can improve the safety of the battery pack in the event of a rear-end collision.
[0080] As a preferred implementation method, such as Figure 1As shown, a horizontally arranged platform structure 302 is formed on the rear bulkhead 3. The lower part of the rear bulkhead 3 is connected to the front side of the platform structure 302, and the upper part of the rear bulkhead 3 is connected to the rear side of the platform structure 302. In the vertical direction of the vehicle, the platform structure 302 is set at a height no lower than the central tunnel 100, and a second battery pack arrangement space 300 is formed below the platform structure 302. The horizontal platform structure 302 formed on the rear bulkhead 3 not only serves as storage space but also increases the overall structural strength and rigidity of the rear bulkhead 3, thereby improving the collision response performance of the rear bulkhead 3.
[0081] like Figure 2 and Figure 15 As shown, the lower part of the rear panel 3 is connected to the rear end of the front floor 1 and the central channel 100, and a connecting opening 301 corresponding to the central channel 100 is provided in the lower part of the rear panel 3. The first battery pack arrangement space 200 and the second battery pack arrangement space 300 are specifically connected through the connecting opening 301. The second battery pack arrangement space 300 is located below the platform structure 302 and on the rear side of the lower part of the rear panel 3. Placing the battery pack in the second battery pack arrangement space 300 can make full use of the space at the rear panel 3, which is beneficial to increasing the compactness of the vehicle body structure.
[0082] To further enhance the performance of the rear panel 3, a protrusion 303 protruding forward is formed on the upper part of the rear panel 3. From the vertical direction of the vehicle, the protrusion 303 is located behind the central tunnel 100. By forming the protrusion 303 on the upper part of the rear panel 3, the structural strength of the upper part of the rear panel 3 can be increased, which helps to further enhance the collision response capability of the rear panel 3.
[0083] like Figure 15 As shown, the protrusion 303 extends from the top of the rear bulkhead 3 down to the platform structure 302. The width of the top of the protrusion 303 in the left-right direction of the vehicle gradually increases from bottom to top. The thickness of the bottom of the protrusion 303 in the front-rear direction of the vehicle gradually decreases from bottom to top. This effectively enhances the strength of the upper part of the rear bulkhead 3 and provides good load-bearing capacity against collision forces.
[0084] In this embodiment, the rear panel 3 is preferably made of carbon fiber composite material. This utilizes the high stiffness and light weight of carbon fiber composite material to ensure the stiffness of the rear panel 3 and its ability to transmit impact forces, while also contributing to the lightweighting of the rear panel 3 and even the vehicle body. Furthermore, the hollowed-out design below the platform structure 302 on the rear panel 3 not only facilitates the forming of the second battery pack arrangement space 300 but also helps save carbon fiber material, thereby reducing production costs.
[0085] In practice, the thickness of the rear panel 3 is generally around 5mm to ensure good rigidity. Of course, the thickness of the rear panel 3 can also be determined according to usage requirements. In this embodiment, the rear panel 3 is bonded to the front floor 1 and surrounding components such as the sill beam 6 during installation.
[0086] It should be noted that the mounting inserts in this embodiment can be made of aluminum alloy, for example, to provide high structural strength and facilitate lightweight design. The structural foam in this embodiment can be a product from the prior art, such as PMI (polymethacrylimide) foam, which has excellent mechanical properties, chemical corrosion resistance, and good fire resistance. Of course, in addition to PMI foam, other structural foam materials with high structural rigidity can also be used.
[0087] In addition, the front bulkhead 2 and the sill beam 6 in this embodiment are preferably made of carbon fiber composite material to further reduce the weight of the vehicle cabin structure while meeting the structural strength requirements of the vehicle cabin.
[0088] In this embodiment, the vehicle body structure is arranged in a "T" shape between the first battery pack arrangement space 200 and the second battery pack arrangement space 300. This allows the battery pack to be arranged within the central channel 100 and below the rear panel 3, which optimizes the battery pack installation method and force transmission structure. This solves the problems of large space occupation and poor collision force transmission effect of the battery pack arrangement in the prior art.
[0089] Furthermore, this embodiment also relates to a vehicle having the body structure described above.
[0090] The vehicle described in this embodiment, by setting the above-mentioned body structure, helps to improve the compactness of the battery pack arrangement on the vehicle and the collision safety.
[0091] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A vehicle body structure, characterized in that: a vehicle cabin is provided, and a front floor (1) and a rear wall (3) connected to a rear end of the front floor (1) are provided in the vehicle cabin; an upwardly bulging center tunnel (100) is provided on the front floor (1), and a first battery pack arrangement space (200) is provided at a bottom of the center tunnel (100), and a second battery pack arrangement space (300) is provided at a rear portion of the rear wall (3); a rear end of the first battery pack arrangement space (200) is in communication with the second battery pack arrangement space (300), and the first battery pack arrangement space (200) and the second battery pack arrangement space (300) are arranged in a "T" shape from a top-down view of the vehicle.
2. The vehicle body structure according to claim 1, characterized in that: a reinforcing structure (4) is provided at a top of the center tunnel (100), and the reinforcing structure (4) extends from a front end of the center tunnel (100) to a rear end of the center tunnel (100).
3. The vehicle body structure according to claim 2, characterized in that: the front floor (1) is made of carbon fiber composite material, and includes a front floor upper plate (101) and a front floor lower plate (102) connected together; a cavity (108) is formed at the top of the center tunnel (100) between the front floor upper plate (101) and the front floor lower plate (102), and the reinforcing structure (4) is formed by structural foam filled in the cavity (108).
4. The vehicle body structure according to claim 3, characterized in that: battery pack side mounting points are respectively provided at left and right sides of the bottom of the center tunnel (100), and a first battery pack rear mounting point is provided at a rear end of the front floor (1); the battery pack side mounting points and the first battery pack rear mounting point each include structural foam filled between the front floor upper plate (101) and the front floor lower plate (102), and mounting inserts embedded in the structural foam.
5. The vehicle body structure according to claim 1, characterized in that: a blocking plate (5) is provided at a front end of the first battery pack arrangement space (200), and a recess (501) opening toward a front of the vehicle is formed at an upper portion of the blocking plate (5), and a battery pack front mounting point is provided at a bottom of the blocking plate (5).
6. The vehicle body structure according to claim 5, characterized in that: the blocking plate (5) is made of carbon fiber composite material, and a closed inner cavity is formed at the bottom of the blocking plate (5), and the battery pack front mounting point includes structural foam filled in the closed inner cavity, and mounting inserts embedded in the structural foam.
7. The vehicle body structure according to claim 1, characterized in that: a platform structure (302) is formed at the rear wall (3) and arranged horizontally, a lower portion of the rear wall (3) is connected to a front side of the platform structure (302), and an upper portion of the rear wall (3) is connected to a rear side of the platform structure (302). The platform structure (302) is arranged above the middle tunnel (100) in the vertical direction of the vehicle, and the second battery pack arrangement space (300) is formed below the platform structure (302).
8. The vehicle body structure according to claim 7, characterized in that: an upper portion of the rear panel (3) is formed with a bulge (303) bulging forward of the vehicle, the bulge (303) being located rearward of the middle tunnel (100) in the vertical direction of the vehicle; and / or, the rear panel (3) is made of carbon fiber composite material.
9. The vehicle body structure according to any one of claims 1 to 8, characterized in that: the rear engine compartment longitudinal beams (7) are arranged on the left and right sides of the vehicle; the rear engine compartment longitudinal beams (7) are connected to the rear portion of the vehicle cabin, and the second battery pack arrangement space (300) is located between the left and right rear engine compartment longitudinal beams (7); wherein the left and right rear engine compartment longitudinal beams (7) are respectively provided with second battery pack rear mounting points, and / or the left and right rear engine compartment longitudinal beams (7) are connected by a cross beam (701) located rearward of the second battery pack arrangement space (300).
10. A vehicle, characterized in that: the vehicle is provided with the vehicle body structure according to any one of claims 1 to 9.