Battery pack collision force transmission structure and vehicle

Abstract

The utility model provides a battery pack collision force transmission structure and a vehicle, the battery pack collision force transmission structure is suitable for a vehicle cabin provided with a battery pack arrangement space, and the battery pack collision force transmission structure comprises a middle channel arranged on a front floor in the vehicle cabin and a rear coaming located behind the front floor; a battery pack arrangement space is arranged at the bottom of the middle channel and / or the rear portion of the rear coaming, the rear end of the middle channel is connected with the rear coaming, and projections of the middle channel and the rear coaming in the vertical direction of the whole vehicle form a T-shaped structure. According to the battery pack collision force transmission structure, when a vehicle is collided, especially when the vehicle is collided backwards, the collision force transmission channel can be formed through the middle channel and the rear coaming which are connected into the T shape, collision force can be dispersed and transmitted, collision impact on the battery pack in the battery pack arrangement space can be reduced, and the battery pack can be prevented from being damaged. And the safety of the battery pack is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, especially a battery pack collision force transmission structure, and simultaneously, the utility model relates to a vehicle with the battery pack collision force transmission structure. BACKGROUND

[0002] The collision force transmission structure of the vehicle is mainly designed to effectively transmit and absorb the collision energy when the vehicle collides, so as to reduce the damage to the passengers and other parts of the vehicle. The collision force transmission structure can absorb a large amount of energy when colliding, reduce the energy transmitted to the passengers and other parts of the vehicle, and make the collision force dispersed to different parts of the vehicle instead of concentrated in one point, thereby reducing the local damage to the vehicle and also reducing the impact and injury of the passengers in the collision.

[0003] In the existing high-performance vehicles with low and streamlined bodies, especially electric vehicles, when the vehicle collides, the battery pack generally transmits and disperses the collision force through the two side sills, so that the force transmission channel is single, which is not conducive to the improvement of the collision safety of the battery pack. SUMMARY

[0004] Therefore, the utility model aims at providing a battery pack collision force transmission structure to improve the collision safety of the battery pack.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A battery pack collision force transmission structure is suitable for a vehicle cabin provided with a battery pack arrangement space, the battery pack collision force transmission structure comprising a middle channel provided on a front floor in the vehicle cabin and a rear wall panel located behind the front floor; the bottom of the middle channel and / or the rear part of the rear wall panel is provided with the battery pack arrangement space, and the rear end of the middle channel is connected with the rear wall panel, and the projection of the middle channel and the rear wall panel in the up-down direction of the whole vehicle forms a "T" shaped structure.

[0007] Further, the top of the middle channel is provided with a reinforcing structure, and the reinforcing structure is penetrated from the front end of the middle channel to the rear end of the middle channel.

[0008] Further, the reinforcing structure comprises a reinforcing block located at the rear end of the middle channel and reinforcing arms respectively arranged at the left and right edges of the top of the middle channel; both of the reinforcing arms extend from the front end of the middle channel to the rear end of the middle channel and are connected on the reinforcing block.

[0009] Further, the top of the rear end of the middle channel is a slope obliquely arranged to the rear and upper part of the vehicle, and the top of the reinforcing block is obliquely arranged to the slope. Further, the top of the rear end of the middle channel is a slope obliquely arranged to the rear and upper part of the vehicle, and the top of the reinforcing block is obliquely arranged to the slope.

[0010] Further, the width of the inclined surface in the left-right direction of the whole vehicle is gradually reduced from front to back in the front-back direction of the whole vehicle.

[0011] Further, the front floor is made of carbon fiber composite material and comprises a front floor upper plate and a front floor lower plate connected together; the top of the middle tunnel is formed with a cavity between the front floor upper plate and the front floor lower plate, and the reinforcing structure is formed by structural foam filled in the cavity.

[0012] Further, the rear wall is formed with a horizontally arranged platform structure, the lower part of the rear wall is connected with the front side of the platform structure, and the upper part of the rear wall is connected with the rear side of the platform structure; in the up-down direction of the whole vehicle, the platform structure is arranged higher than the middle tunnel, and the lower part of the platform structure is formed with the battery pack arrangement space.

[0013] Further, the upper part of the rear wall is formed with a bulge part protruding towards the front of the vehicle, and the bulge part is located behind the middle tunnel in the up-down direction of the whole vehicle.

[0014] Further, the rear wall is made of carbon fiber composite material.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The battery pack collision force transmission structure, by being provided with the battery pack arrangement space at the bottom of the middle tunnel and / or the rear part of the rear wall, and the projections of the middle tunnel and the rear wall in the up-down direction of the whole vehicle forming a "T" shaped structure, when the vehicle collides, especially when the vehicle rear collides, the collision force transmission channel is formed by the middle tunnel and the rear wall connected in a "T" shape, the collision force is dispersed and transmitted, the collision impact on the battery pack in the battery pack arrangement space is reduced, and the safety of the battery pack is improved.

[0017] In addition, the reinforcing structure arranged at the top of the middle tunnel can increase the overall rigidity of the middle tunnel and improve the collision force transmission capacity of the middle tunnel. The reinforcing structure is composed of two reinforcing arms arranged side by side and a reinforcing block at the rear end, which can ensure the connection strength between the middle tunnel and the rear wall while making the middle tunnel have better structural strength, thereby further improving the collision force transmission capacity of the middle tunnel. The setting of the inclined surface at the top of the rear end of the middle tunnel can inhibit the intrusion of the rear wall into the cabin during collision, and can also facilitate the transmission of the collision force at the rear wall to the middle tunnel, thereby improving the collision force dispersion effect. The width of the inclined surface in the left-right direction of the whole vehicle is gradually reduced from front to back in the front-back direction of the whole vehicle, which helps to increase the support capacity of the rear end of the middle tunnel and improve the response effect to the rear collision of the vehicle.

[0018] Furthermore, the front floor is made of carbon fiber composite material, which leverages the high stiffness and light weight of carbon fiber composites 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 reinforcing structures, with structural foam offering high strength and light weight as a reinforcing element. A horizontal platform structure is formed on the rear panel, which not only serves as storage space but also increases the overall structural strength and rigidity of the rear panel, improving its collision response performance.

[0019] Furthermore, the raised section on the upper part of the rear panel increases the structural strength of the upper part of the rear panel, which helps to further enhance the rear panel's collision resistance. The rear panel is made of carbon fiber composite material, which can take advantage of the high stiffness and light weight of carbon fiber composite material to ensure the rigidity of the rear panel and its ability to transmit collision forces, while also facilitating the weight reduction of the rear panel and even the vehicle body.

[0020] In addition, another objective of this utility model is to provide a vehicle, including a vehicle cabin, wherein the vehicle cabin is provided with a battery pack collision force transmission structure as described above.

[0021] The vehicle described in this utility model, by setting the above-mentioned battery pack collision force transmission structure, helps to improve the collision safety of the battery pack and the vehicle. Attached Figure Description

[0022] 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:

[0023] Figure 1 This is a schematic diagram of the vehicle cabin described in an embodiment of the present invention from one perspective;

[0024] Figure 2 This is a structural schematic diagram of the vehicle cabin described in an embodiment of the present invention from another perspective;

[0025] Figure 3 This is a top view of the vehicle cabin described in an embodiment of the present utility model;

[0026] Figure 4 This is a bottom view of the front floor as described in an embodiment of the present invention;

[0027] Figure 5 This is a top view of the front floor as described in an embodiment of the present invention;

[0028] Figure 6 for Figure 5 Sectional view along direction AA in the middle;

[0029] Figure 7 This is a schematic diagram of the structure of the front floor plate described in an embodiment of the present invention;

[0030] 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;

[0031] Figure 9 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 10 This is a schematic diagram of the reinforcing structure described in an embodiment of the present utility model;

[0033] Figure 11 This is a schematic diagram of the structure of the first structural foam and the fourth structural foam described in the embodiments of this utility model;

[0034] Figure 12 This is a schematic diagram of the sealing plate described in an embodiment of the present utility model;

[0035] Figure 13 This is a schematic diagram of the second structure foam described in an embodiment of the present invention;

[0036] Figure 14 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. Outer protrusion; 1012. Second protrusion; 1013. Recessed portion; 1014. First flange; 102. Front floor lower plate; 1021. Inner protrusion; 1022. First protrusion; 1023. First through hole; 1024. Second flange; 103. First structural foam; 104. First mounting insert; 105. Fourth structural foam; 106. Sloping surface; 108. Cavity;

[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 battery pack collision force transmission structure, which is suitable for vehicle cabins with battery pack arrangement space, in order to solve the problem of poor battery pack collision safety performance in the prior art.

[0050] In terms of overall structure, the battery pack collision force transmission structure includes a central channel 100 located on the front floor 1 in the vehicle cabin, and a rear panel 3 located behind the front floor 1. The bottom of the central channel 100 and / or the rear of the rear panel 3 are provided with battery pack placement space, and the rear end of the central channel 100 is connected to the rear panel 3. The projections of the central channel 100 and the rear panel 3 in the vertical direction of the vehicle form a "T"-shaped structure.

[0051] The battery pack collision force transmission structure described in this embodiment has a battery pack arrangement space at the bottom of the central channel 100 and / or at the rear of the rear panel 3. The projections of the central channel 100 and the rear panel 3 in the vertical direction of the vehicle form a "T" shape. In the event of a vehicle collision, especially a rear-end collision, the collision force transmission channel can be formed by the "T"-shaped central channel 100 and the rear panel 3 to disperse and transmit the collision force, thereby reducing the impact on the battery pack in the battery pack arrangement space and improving the safety of the battery pack.

[0052] Based on the above overview, an exemplary structure of the vehicle cabin and battery pack collision force transmission 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] In a preferred embodiment, battery pack arrangement spaces are provided at the bottom of the central tunnel 100 and at the rear of the rear panel 3. For ease of differentiation, the battery pack arrangement space located on the central tunnel 100 is referred to as the first battery pack arrangement space 200, and the battery pack arrangement space located at the rear of the rear panel 3 is referred to as the second battery pack arrangement space 300. The second battery pack arrangement space 300 extends along the left-right direction of the vehicle, while the first battery pack arrangement space 200 extends along the front-rear direction of the vehicle and is connected to the middle of the second battery pack arrangement space 300 in a "T" shape.

[0054] like Figure 2 As shown, the first battery pack arrangement space 200 and the second battery pack arrangement space 300 can be connected. In this case, as a feasible arrangement, the battery pack is T-shaped and installed in both the first battery pack arrangement space 200 and the second battery pack arrangement space 300. As another feasible arrangement, there can be two battery packs, one arranged in the first battery pack arrangement space 200 and the other in the second battery pack arrangement space 300, in which case the two battery packs are T-shaped in their installed state. Of course, in this embodiment, only the first battery pack arrangement space 200 or the second battery pack arrangement space 300 can be provided; in this case, the battery pack is I-shaped and arranged in the corresponding battery pack arrangement space.

[0055] The following is combined first Figures 3 to 6The structure of the central channel 100 on the front floor is described below. In this embodiment, the central channel 100 is bulging upward relative to the front floor 1, so that the bottom of the central channel 100 forms a cavity arranged along the front-rear direction of the vehicle. A front sealing structure is provided at the front end of the cavity, and the rear end of the cavity can be directly connected to the second battery pack arrangement space 300. By placing the battery pack in the central channel 100, the space in the central channel 100 can be fully utilized, which is beneficial to increasing the compactness of the vehicle body structure and also to the lightweight design of the vehicle body.

[0056] In a preferred embodiment, a reinforcing structure 4 is provided at the top of the central channel 100, and the reinforcing structure 4 extends from the front end of the central channel 100 to the rear end of the central channel 100. By providing the reinforcing structure 4, the overall rigidity of the central channel 100 can be increased, thereby improving the central channel 100's ability to transmit collision forces.

[0057] In terms of specific structure, such as Figure 9 and Figure 10 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 of the central channel 100 and are connected to the reinforcing block 401. This arrangement ensures the connection strength with the rear panel 3 while giving the central channel 100 better structural strength, which helps to further improve the collision force transmission capability of the central channel 100.

[0058] Furthermore, such as Figure 7 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.

[0059] In addition, to further improve the performance of the middle channel 100, such as Figure 5 and Figure 7 As shown, the width of the ramp 106 gradually decreases from front to back in the longitudinal direction of the vehicle, while its width decreases in the lateral direction. This arrangement helps to increase the support capacity of the rear end of the center tunnel 100, thereby improving the response to rear-end collisions. Correspondingly, the reinforcing block 401 is adapted to the ramp 106.

[0060] As a preferred implementation method, such as Figure 5 and Figure 6As shown, the front floor 1 in this embodiment 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.

[0061] In this embodiment, the front floor 1 is made of carbon fiber composite material. The high stiffness and light weight of carbon fiber composite material can be used to ensure the rigidity of the vehicle body, improve the safety of the battery pack, and also help to improve the lightweighting of the vehicle body. The cavity 108 between the upper front floor 101 and the lower front floor 102 facilitates the arrangement of the reinforcing structure 4. Using structural foam as the reinforcing structure 4 has the advantages of high strength and light weight.

[0062] In terms of specific structure, such as Figure 7 and Figure 8 As shown, the lower front floor panel 102 has an upwardly bulging inner protrusion 1021 extending along the longitudinal direction of the vehicle. The upper front floor panel 101 conforms to the lower front floor panel 102 and has an outer protrusion 1011 conforming to the inner protrusion 1021. The upper front floor panel 101 has upwardly folded first flanges 1014 around its four edges, and the lower front floor panel 102 has upwardly folded second flanges 1024 around its four edges. The first flanges 1014 and second flanges 1024 can be adhesively connected to each other, thereby connecting their edges together. Simultaneously, the four sides of the front floor 1 are connected to surrounding components via the second flanges 1024.

[0063] In the connected state, the sidewall of the outer protrusion 1011 abuts against the sidewall of the inner protrusion 1021, and the top of the outer protrusion 1011 and the top of the inner protrusion 1021 are spaced apart, forming the aforementioned cavity 108 between them. In this embodiment, the cooperation between the front floor upper plate 101 and the front floor lower plate 102 facilitates the arrangement of the reinforcement structure 4.

[0064] The reinforcing block 401 and the two reinforcing arms 402 are both located on the top of the inner protrusion 1021 and are bonded to the inner protrusion 1021. 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 7 and Figure 8 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 inner protrusion 1021, which helps to further improve the fixing effect of the reinforcing structure 4 at the top of the central channel 100.

[0065] To improve the structural utilization rate of the central channel 100, such as Figure 7As shown, the outer protrusion 1011 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.

[0066] To facilitate the installation of the battery pack within the first battery pack arrangement space 200, in this embodiment, battery pack side mounting points are provided on the front floor 1 on both sides of the cavity. Each battery pack side mounting point includes structural foam filling the space between the upper front floor 101 and the lower front floor 102, and mounting inserts embedded within the structural foam. The placement of battery pack side mounting points on both sides of the cavity ensures the reliability of the battery pack's side mounting on the vehicle body. The structural foam and its internal mounting inserts facilitate the connection between the battery pack and the front floor 1, thereby addressing the issue of not being able to directly form battery pack mounting points on carbon fiber composite materials.

[0067] To distinguish it from the structural foam mentioned below, in this embodiment, the structural foam filling the space between the front floor upper plate 101 and the front floor lower plate 102 is referred to as the first structural foam 103, and the mounting insert embedded in the first structural foam 103 is referred to as the first mounting insert 104. Specifically, in terms of structure, as follows... Figure 7 and Figure 8 As shown, an upwardly protruding first protrusion 1022 is provided on both sides of the inner protrusion 1021, and the first protrusion 1022 extends along the extension direction of the central channel 100. Corresponding to each first protrusion 1022, a second protrusion 1012 is provided on both sides of the outer protrusion 1011.

[0068] like Figure 6 As shown, the first structural foam 103 fills the space formed between the first protrusion 1022 and the second protrusion 1012 on the same side, and is bonded to the first protrusion 1022 or the second protrusion 1012. Multiple first mounting inserts 104 are spaced apart along the extending direction of each first structural foam 103, and each first mounting insert 104 has a threaded hole. Corresponding to each first mounting insert 104, multiple first through holes 1023 are provided on the top surface of each first protrusion 1022.

[0069] The battery pack is mounted on the front floor 1 on both sides by bolts passing through itself and the first through hole 1023, respectively, and screwed onto the corresponding first mounting insert 104. The first structural foam 103 and the first mounting insert 104 cooperate in a way that facilitates layout and provides a good connection. Furthermore, the detachable connection between the battery pack's two sides and the front floor 1 also facilitates the installation and removal of the battery pack.

[0070] As a preferred implementation method, such as Figure 2 , Figure 11 andFigure 12 As shown, the front sealing structure includes a blocking plate 5 connected to the inner wall of the cavity. The upper part of the blocking plate 5 has a groove 501 opening towards the front of the vehicle, and the bottom of the blocking plate 5 has a front mounting point for the battery pack. Here, the groove 501 on the blocking plate 5 allows it to be box-shaped. Utilizing the high strength of the box-shaped structure, the structural strength of the blocking plate 5 is increased. Furthermore, the groove 501 has a simple structure and is easy to manufacture. In addition, the front mounting point for the battery pack at the bottom of the blocking plate 5 also ensures the reliability of the front of the battery pack on the vehicle body.

[0071] To further facilitate lightweight vehicle design, the blocking plate 5 in this embodiment is made of carbon fiber composite material, and the bottom of the blocking plate 5 forms a closed inner cavity. The battery pack front mounting point includes structural foam filled in the closed inner cavity, and mounting inserts embedded in the structural foam. The use of carbon fiber composite material for the blocking plate 5 provides high rigidity, ensuring the rigidity of the battery pack front mounting point, while also facilitating weight reduction. The structural foam and mounting inserts within the closed inner cavity of the blocking plate 5 effectively address the issue of directly molding the battery pack mounting point onto carbon fiber composite material.

[0072] The structural foam inside the baffle plate 5 is referred to as the second structural foam 502, and the mounting insert disposed therein is referred to as the second mounting insert 503. The second mounting insert 503 also has threaded holes. As a feasible implementation, the closed inner cavity at the bottom of the baffle plate 5 extends along the width direction of the entire vehicle and is rectangular in shape. The second structural foam 502 fills the closed inner cavity and is adapted to the shape of the closed inner cavity. Multiple second mounting inserts 503 are spaced apart in the second structural foam 502 along the left-right direction of the entire 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 and being screwed into the corresponding second mounting insert 503.

[0073] like Figure 11 As shown, a fourth structural foam 105 is filled in the space between the front floor upper plate 101 and the front floor lower plate 102 located on both sides of the central channel 100 to further improve the structural strength and reliability of the front floor 1. Preferably, the fourth structural foam 105 is integrally formed with the first structural foam 103 on the same side.

[0074] The following combination Figures 1 to 3 as well as Figure 14The structure of the rear bulkhead 3 will be described below. In a preferred embodiment, 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 positioned no lower than the central tunnel 100, and a battery pack arrangement space 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 its collision response performance.

[0075] like Figure 2 and Figure 14 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.

[0076] like Figure 2 As shown, the battery pack collision force transmission structure in this embodiment 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 battery pack is arranged between the two rear engine compartment longitudinal beams 7. Each of the two rear engine compartment longitudinal beams 7 has mounting points for installing the battery pack. This arrangement of the battery pack between the two rear engine compartment longitudinal beams 7 increases its safety, and the mounting points on the rear engine compartment longitudinal beams 7 further ensure the reliability of the battery pack's installation on the vehicle body.

[0077] Specifically, the front ends of each aft engine compartment longitudinal beam 7 are connected to the sill beam 6 located on the same side. The aft engine compartment longitudinal beam 7 can be, for example, a cast aluminum beam, and the battery pack mounting points on the aft engine compartment longitudinal beam 7 can be, for example, threaded connection holes formed thereon. To further improve the structural strength of the aft engine compartment 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.

[0078] In addition, still refer toFigure 2 As shown, a crossbeam 701 located behind the second battery pack arrangement space 300 is connected between the longitudinal beams 7 on both sides of the rear engine compartment. The crossbeam 701 here can be made of extruded aluminum profile, for example. The safety of the battery pack in the event of a rear-end collision can be improved by setting the crossbeam 701.

[0079] As a preferred implementation method, such as Figure 1 and Figure 14 As shown, a protrusion 303 bulging forward is formed on the upper part of the rear panel 3. Viewed 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 increase the collision resistance of the rear panel 3.

[0080] To further improve the performance of the protrusion 303, 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 better load-bearing capacity against collision forces.

[0081] Furthermore, 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. In practice, the thickness of the rear panel 3 is generally around 5mm, which provides excellent stiffness. During installation, the rear panel 3 is bonded to the front floor 1 and surrounding components such as the sill beam 6.

[0082] The mounting inserts in this embodiment can be made of aluminum alloy, for example, to provide high structural strength and facilitate lightweight design. Additionally, 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, besides PMI foam, other structural foam materials with high structural rigidity can also be used.

[0083] In this embodiment, the front bulkhead 2 and the sill beam 6 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.

[0084] The battery pack collision force transmission structure described in this embodiment facilitates the arrangement and installation of the battery pack by setting up a first battery pack arrangement space 200 and a second battery pack arrangement space 300, or by setting up only the first battery pack arrangement space 200 or the second battery pack arrangement space 300. Furthermore, by connecting the collision force transmission channels into a "T" shape, it can significantly improve the dispersion and transmission effect of the collision force and reduce the collision impact on the battery pack, thereby improving the safety of the battery pack.

[0085] In addition, this embodiment also relates to a vehicle, including a vehicle cabin, and the vehicle cabin is provided with a battery pack collision force transmission structure as described above.

[0086] The vehicle described in this embodiment, by setting up the above-mentioned battery pack collision force transmission structure, helps to improve the collision safety of the battery pack and the vehicle.

[0087] 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 battery pack crash force transmission structure adapted to a vehicle cabin provided with a battery pack arrangement space, characterized in that: the battery pack crash force transmission structure comprises a center tunnel (100) arranged on a front floor (1) in the vehicle cabin, and a rear wall (3) located behind the front floor (1); a bottom of the center tunnel (100) and / or a rear of the rear wall (3) is provided with the battery pack arrangement space, and a rear end of the center tunnel (100) is connected with the rear wall (3), and projections of the center tunnel (100) and the rear wall (3) in a vertical direction of the vehicle form a "T" shape structure. 2.The battery pack crash force transmission structure according to claim 1, characterized in that: a top of the center tunnel (100) is provided with a reinforcing structure (4), and the reinforcing structure (4) is penetrated from a front end of the center tunnel (100) to a rear end of the center tunnel (100). 3.The battery pack crash force transmission structure according to claim 2, characterized in that: the reinforcing structure (4) comprises a reinforcing block (401) located at the rear end of the center tunnel (100), and reinforcing arms (402) respectively arranged at left and right edges of the top of the center tunnel (100); both of the reinforcing arms (402) extend from the front end of the center tunnel (100) to the rear end of the center tunnel (100) and are connected to the reinforcing block (401). 4.The battery pack crash force transmission structure according to claim 3, characterized in that: a top of the rear end of the center tunnel (100) is a slope (106) arranged obliquely upward to the rear of the vehicle, and a top of the reinforcing block (401) is adapted to be arranged obliquely on the slope (106). 5.The battery pack crash force transmission structure according to claim 4, characterized in that: in a front-rear direction of the vehicle, the width of the slope (106) in a left-right direction of the vehicle gradually decreases from front to rear. 6.The battery pack crash force transmission structure according to claim 4, characterized in that: the front floor (1) is made of carbon fiber composite material and comprises a front floor upper plate (101) and a front floor lower plate (102) connected together; a cavity (108) is formed in 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). 7.The battery pack crash force transmission structure according to any one of claims 1 to 6, characterized in that: a platform structure (302) is arranged horizontally on the rear wall (3), a lower part of the rear wall (3) is connected with a front side of the platform structure (302), and an upper part of the rear wall (3) is connected with a rear side of the platform structure (302); in the vertical direction of the vehicle, the platform structure (302) is arranged higher than the center tunnel (100), and a lower part of the platform structure (302) is provided with the battery pack arrangement space. 8.The battery pack crash force transmission structure according to claim 7, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ An upper portion of the back panel (3) is formed with a bulging portion (303) bulging towards the front of the vehicle, and the bulging portion (303) is located behind the middle channel (100) as viewed in the upward / downward direction of the whole vehicle.

9. The battery pack crash force transmission structure according to claim 8, characterized in that: The back panel (3) is made of carbon fiber composite material.

10. A vehicle, characterized in that: The vehicle cabin is provided with the battery pack crash force transmission structure according to any one of claims 1 to 9.

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