Vehicle body and battery pack structural assembly and vehicle

Abstract

The application provides a vehicle body and battery pack structure assembly and a vehicle. The vehicle body and battery pack structure assembly comprises a first rocker beam, a second rocker beam, a front floor assembly and a battery pack housing. The front floor assembly comprises a front floor. Two sides of the front floor along the vehicle width direction are connected with the first rocker beam and the second rocker beam respectively. The battery pack housing is located between the first rocker beam and the second rocker beam and on one side of the front floor along the vehicle height direction. The battery pack housing comprises a first side sill, a second side sill and a mounting side sill extending along the vehicle length direction. The first side sill is connected with the first rocker beam. The mounting side sill comprises a connecting portion and a mounting portion, and the mounting portion is connected with the second rocker beam. The second side sill is connected with the mounting portion through the connecting portion. The mounting portion, the connecting portion and the second side sill form an accommodation space. A front floor lower longitudinal beam is arranged between the connecting portion and the front floor and extends along the vehicle length direction, and is used for connecting the mounting side sill with the front floor.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a vehicle body and battery pack structural assembly and a vehicle. Background Technology

[0002] New energy vehicles are primarily powered by electricity, offering significant advantages such as environmental friendliness and energy conservation. Compared to traditional gasoline-powered vehicles, they emit virtually no exhaust fumes during operation, effectively reducing the generation of greenhouse gases and harmful pollutants. The electric motor drive system has a simpler structure and lower maintenance costs; furthermore, its reliance on electricity helps alleviate dependence on fossil fuels.

[0003] The area beneath the front floor of new energy vehicles can be used to house the battery pack. To make better use of space, additional space can be provided beneath the front floor to accommodate wiring harnesses or conduits. However, the structural strength of the vehicle body and battery pack assembly in related technologies is relatively low, insufficient to support and protect the battery pack and its associated space. Utility Model Content

[0004] This application provides a vehicle body and battery pack structural assembly and a vehicle.

[0005] A first aspect of this application provides a vehicle body and battery pack structural assembly, the vehicle body and battery pack structural assembly comprising:

[0006] The first and second door sill beams extend along the length of the vehicle body, respectively.

[0007] A front floor assembly, including a front floor; the two sides of the front floor along the width direction of the vehicle body are respectively connected to the first sill beam and the second sill beam;

[0008] A battery pack housing is located between the first sill beam and the second sill beam, and on one side of the front floor along the vehicle height direction; the battery pack housing includes a first side beam, a second side beam, and a mounting side beam extending along the vehicle length direction; the first side beam is connected to the first sill beam; the mounting side beam includes a connecting portion and a mounting portion, the mounting portion being connected to the second sill beam; the second side beam is connected to the mounting portion via the connecting portion; the mounting portion, the connecting portion, and the second side beam form an accommodating space;

[0009] A front floor under-mounted longitudinal beam is disposed between the connecting part and the front floor and extends along the length of the vehicle body, for connecting the mounting side beam to the front floor.

[0010] In some embodiments, the front floor assembly further includes a beam structure; in the vehicle height direction, the beam structure is located on the side of the front floor away from the battery pack housing; the beam structure includes a first seat crossbeam and a second seat crossbeam extending along the vehicle width direction; the first seat crossbeam and the second seat crossbeam are spaced apart along the vehicle length direction;

[0011] The front floor under-mount longitudinal beam includes a first end and a second end opposite to each other; the first end extends below the first seat crossbeam and is connected to the first seat crossbeam; the second end extends below the second seat crossbeam and is connected to the second seat crossbeam.

[0012] In some embodiments, in the vehicle width direction, the front floor lower longitudinal beam is disposed on the side of the connection portion of the mounting side beam near the second side beam.

[0013] In some embodiments, the front floor assembly further includes a beam structure; in the vehicle height direction, the beam structure is located on the side of the front floor away from the battery pack housing; the beam structure includes a first seat crossbeam and a second seat crossbeam extending along the vehicle width direction; the first seat crossbeam and the second seat crossbeam are spaced apart along the vehicle length direction;

[0014] The beam structure also includes a central channel beam extending along the length of the vehicle body, and a first front floor longitudinal beam and a second front floor longitudinal beam located on both sides of the central channel beam; one end of the first front floor longitudinal beam is connected to the first seat crossbeam, and the other end extends along the length of the vehicle body in a direction away from the second seat crossbeam; one end of the second front floor longitudinal beam is connected to the first seat crossbeam, and the other end extends along the length of the vehicle body in a direction away from the second seat crossbeam.

[0015] In some embodiments, the battery pack housing further includes a front crossbeam for battery cells, a rear crossbeam for battery cells extending along the width direction of the vehicle body, and a rear crossbeam for controller located on the side of the rear crossbeam for battery cells away from the front crossbeam for battery cells, wherein a controller receiving cavity is provided between the rear crossbeam for controller and the rear crossbeam for battery cells.

[0016] In some embodiments, the battery pack housing further includes a front crossbeam and a rear crossbeam extending along the width direction of the vehicle body; the vehicle body and battery pack structure assembly includes a rear crossbeam extending along the width direction of the vehicle body; the battery pack housing is connected to the front floor via the rear crossbeam; the rear crossbeam is located on the side of the rear crossbeam away from the front crossbeam; both ends of the rear crossbeam are connected to the first sill beam and the second sill beam, respectively.

[0017] In some embodiments, the battery pack housing further includes a controller rear crossbeam located on the side of the cell rear crossbeam away from the cell front crossbeam, the controller rear crossbeam extending along the vehicle width direction, and a controller receiving cavity provided between the controller rear crossbeam and the cell rear crossbeam for accommodating the controller of the battery pack.

[0018] In some embodiments, the controller rear crossbeam includes a support portion and an extension portion connected to the side of the support portion; the bottom surface of the crossbeam is connected to the extension portion after the battery pack is installed.

[0019] In some embodiments, the battery pack housing further includes a cell intermediate beam extending along the width direction of the vehicle body; the cell intermediate beam is located between the front cell crossbeam and the rear cell crossbeam.

[0020] In some embodiments, the front floor assembly further includes a beam structure; in the vehicle height direction, the beam structure is located on the side of the front floor away from the battery pack housing; the beam structure includes a first seat crossbeam, a second seat crossbeam, and a third seat crossbeam extending in the vehicle width direction; the first seat crossbeam, the second seat crossbeam, and the third seat crossbeam are spaced apart in the vehicle length direction, and the third seat crossbeam is located on the side of the second seat crossbeam away from the first seat crossbeam.

[0021] A second aspect of this application provides a vehicle comprising the aforementioned vehicle body and battery pack assembly.

[0022] In the vehicle body and battery pack structural assembly provided in this application embodiment, the first sill beam and the second sill beam are located on both sides of the battery pack housing, which can absorb and disperse impact energy. The first and second side beams of the battery pack housing form a frame structure to protect the battery cells, which can increase the overall rigidity of the battery pack. The mounting side beams not only provide mounting points for the battery pack, but also enhance the structural strength of the area near the housing space. Furthermore, the longitudinal beam under the front floor can provide structural reinforcement for the mounting side beams, which not only improves the load-bearing capacity of the area around the housing space, but also effectively disperses the load during the stress process of the vehicle body and battery pack structural assembly, thereby enhancing the structural stability and crashworthiness of the battery pack housing under complex working conditions.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0025] Figure 1 A three-dimensional structural diagram of a vehicle body and battery pack assembly provided in an embodiment of this application;

[0026] Figure 2 for Figure 1 The illustrated embodiment provides a top view of the vehicle body and battery pack structural assembly;

[0027] Figure 3 for Figure 1 The embodiment shown provides a bottom view of the vehicle body and battery pack assembly excluding the battery pack housing;

[0028] Figure 4 for Figure 3 The illustrated embodiment provides a cross-sectional view of the vehicle body and battery pack assembly cut along the AA direction;

[0029] Figure 5 for Figure 3 The embodiment shown is a cross-sectional view of the vehicle body and battery pack assembly cut along the BB direction;

[0030] Figure 6 for Figure 5 The illustrated embodiment provides a partial enlarged view of region C in a cross-sectional view of the vehicle body and battery pack assembly;

[0031] Figure 7 for Figure 1 The embodiment shown provides a top view of the vehicle body and battery pack assembly excluding the front floor;

[0032] Figure 8 for Figure 1 The embodiment shown provides a bottom view of the vehicle body and battery pack assembly excluding the front floor;

[0033] Figure 9 for Figure 8 The embodiment shown is a cross-sectional view of the vehicle body and battery pack assembly cut along the DD direction;

[0034] Figure 10 for Figure 9 A partial enlarged view of region E in the cross-sectional view of the vehicle body and battery pack assembly provided in the illustrated embodiment;

[0035] Figure 11 for Figure 10 The illustrated embodiment provides a partial enlarged view of region F of the cross-sectional view of the vehicle body and battery pack assembly;

[0036] Figure 12 A three-dimensional structural schematic diagram of the front floor under longitudinal beam provided in an embodiment of this application;

[0037] Figure 13for Figure 1 The embodiment shown provides a top view of the vehicle body and battery pack structure assembly excluding the front floor and battery pack housing;

[0038] Figure 14 for Figure 1 The illustrated embodiment provides a bottom view of the vehicle body and battery pack assembly excluding the front floor and battery pack housing. Detailed Implementation

[0039] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0040] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0041] The vehicle body and battery pack structure assembly and the vehicle according to embodiments of this application will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementation methods can complement or combine with each other.

[0042] This application provides a vehicle body and battery pack structural assembly. For example... Figure 1 As shown, the vehicle body and battery pack structure assembly includes a first sill beam 11, a second sill beam 12, a front floor assembly 20, and a battery pack housing 30.

[0043] like Figure 2 As shown, the first sill beam 11 extends along the length X of the vehicle body, and the second sill beam 12 extends along the length X of the vehicle body. The first sill beam 11 and the second sill beam 12 are available for passengers to step on.

[0044] like Figure 2 and Figure 3 As shown, the front floor assembly 20 includes a front floor 21 and a beam structure 22. The front floor 21 is connected to the first sill beam 11 and the second sill beam 12 on both sides along the vehicle width direction Y, respectively. The front floor 21 is a plate structure, which facilitates the arrangement of other structures.

[0045] like Figure 2 As shown, the beam structure 22 is located on one side of the front floor 21, and in terms of vehicle height, the beam structure 22 is located above the front floor 21. The beam structure 22 includes a first seat crossbeam 221 and a second seat crossbeam 222 extending along the vehicle width direction Y, and the first seat crossbeam 221 and the second seat crossbeam 222 are spaced apart along the vehicle length direction. The first seat crossbeam 221 is connected to the first sill beam 11 and the second sill beam 12, and the second seat crossbeam 222 is connected to the first sill beam 11 and the second sill beam 12. The first seat crossbeam 221 and the second seat crossbeam 222 can be used to install seats.

[0046] like Figure 7 and Figure 8 As shown, the battery pack housing 30 is located between the first sill beam 11 and the second sill beam 12, and is located on the side of the front floor away from the beam structure 22, that is, below the front floor. Figure 4 and Figure 5 As shown, the battery pack housing 30 includes a front crossbeam 31 and a rear crossbeam 32. Both the front crossbeam 31 and the rear crossbeam 32 extend along the vehicle body width direction Y. Figure 9 and Figure 10 As shown, the battery pack housing 30 also includes a first side beam 33, a second side beam 34, and a mounting side beam 35 extending along the length direction X of the vehicle body. The first side beam 33 is connected to the first sill beam 11, and the mounting side beam 35 is connected to the second sill beam 12.

[0047] like Figure 9 and Figure 10 As shown, the mounting side beam 35 includes a connecting portion 351 and a mounting portion 352. The mounting portion 352 is connected to the second sill beam 12, and the second side beam 34 is connected to the mounting portion 352 through the connecting portion 351. The mounting portion 352, the connecting portion 351, and the second side beam 34 form a receiving space 40. The receiving space 40 can be used to accommodate wiring harnesses or pipes, for example, a vehicle's exhaust pipe can be installed in the receiving space 40, and the exhaust pipe can be used to discharge exhaust gases generated by the engine from the cylinder.

[0048] In the vehicle body and battery pack assembly provided in this application embodiment, the first sill beam 11, the second sill beam 12, and the front floor 21 can form a receiving space for accommodating the battery pack 50. The battery pack 50 includes battery cells and a battery pack housing 30 for accommodating the battery cells. The first sill beam 11 and the second sill beam 12 are located on both sides of the battery pack housing 30, and can absorb and disperse impact energy during side collisions, reducing the impact of external impacts on the battery pack 50. The first seat crossbeam 221 and the second seat crossbeam 222 can not only be used for seat installation, but also have a certain supporting strength. The first seat crossbeam 221 and the second seat crossbeam 222, which extend along the width direction of the vehicle body, can prevent the sill beams from deforming during side collisions to a certain extent, avoiding the compression of the battery cells of the battery pack 50 located between the sill beams.

[0049] The battery pack housing 30 further enhances the protection of the battery cells within the battery pack 50. The first side beam 33, the second side beam 34, the front crossbeam 31 of the battery cells, and the rear crossbeam 32 of the battery cells work together to form a robust frame structure, increasing the overall rigidity of the battery pack 50 and effectively dispersing impact forces in the event of a rear-end collision or side impact. The mounting side beam 35 provides mounting points for the battery pack housing. Simultaneously, the connecting part 351 of the mounting side beam 35 connects to the second side beam 34, and the mounting part 352 connects to the sill beam, effectively improving the rigidity and deformation resistance of the surrounding structure of the housing space 40, thereby enhancing the overall mechanical strength and impact resistance of the battery pack.

[0050] The vehicle body and battery pack structure assembly provided in this application provides a highly integrated and high-strength load-bearing and protective frame by rationally arranging the sill beam, front floor, seat crossbeam, and various beam structures in the battery pack housing. This significantly improves the side impact performance of the entire vehicle, which is beneficial for ensuring the safety of the battery cells and is especially suitable for hybrid vehicles.

[0051] In one embodiment, such as Figure 2 As shown, the beam structure 22 also includes a third seat crossbeam 223 extending along the width direction Y of the vehicle body. The third seat crossbeam 223 is located on the side of the second seat crossbeam 222 away from the first seat crossbeam 221. The two ends of the third seat crossbeam 223 are respectively connected to the first sill beam 11 and the second sill beam 12.

[0052] The first seat crossbeam 221 and the second seat crossbeam 222 are mainly used to support the front seats of the vehicle, and usually serve as the front and rear crossbeams of the front seats. The third seat crossbeam 223 can be used to support the second row of seats. The third seat crossbeam 223 can also provide auxiliary support for the structural stability around the battery pack 50, preventing the battery cells of the battery pack from being squeezed due to deformation of the sill beam.

[0053] In one embodiment, such as Figure 7 and Figure 8 As shown, the beam structure 22 also includes a central channel beam 224 extending along the length direction X of the vehicle body. The central channel beam 224 can be used to connect beams extending along the width direction of the vehicle body to improve the structural rigidity of the entire vehicle. For example, the first seat crossbeam 221 includes a first sub-crossbeam 2211 and a second sub-crossbeam 2212 located on both sides of the central channel beam 224. One end of the first sub-crossbeam 2211 is connected to the first sill beam 11, and the other end is connected to the central channel beam 224; one end of the second sub-crossbeam 2212 is connected to the central channel beam 224, and the other end is connected to the second sill beam 12. The interior or underside of the central channel beam 224 can also be used to arrange wiring harnesses or conduits, improving space utilization.

[0054] In one embodiment, such as Figure 7 and Figure 8 As shown, the beam structure 22 also includes a first front floor longitudinal beam 225 and a second front floor longitudinal beam 226 located on both sides of the intermediate passage beam 224. One end of the first front floor longitudinal beam 225 is connected to the first seat crossbeam 221, and the other end extends along the length direction X of the vehicle body in a direction away from the second seat crossbeam 222; one end of the second front floor longitudinal beam 226 is connected to the first seat crossbeam 221, and the other end extends along the length direction X of the vehicle body in a direction away from the second seat crossbeam 222.

[0055] Combination Figure 2 As can be seen, the front floor 21 section is located on the side of the first seat beam 221 facing the front of the vehicle. This section has a relatively large area, and when the vehicle body and battery pack assembly are subjected to a side impact, this section is prone to warping and deformation under external pressure. The first front floor longitudinal beam 225 and the second front floor longitudinal beam 226 can support and reinforce the aforementioned area of ​​the front floor, preventing the front floor from bending downwards and compressing the battery pack 50.

[0056] In one embodiment, such as Figure 4 and Figure 5 As shown, the front crossbeam 31 of the battery cell includes a first beam 311 spaced apart and a second beam 312 located on the side of the first beam 311 facing the rear crossbeam 32 of the battery cell. A wiring space 313 for arranging wire harnesses is provided between the first beam 311 and the second beam 312.

[0057] In one embodiment, such as Figure 5 As shown, the side of the first beam 311 away from the second beam 312 extends outward to form a mounting platform 3111, which can be used to mount the battery pack housing to other structures.

[0058] In one embodiment, such as Figure 4As shown, the battery pack housing 30 also includes a cell intermediate beam 36. The cell intermediate beam 36 extends along the width direction Y of the vehicle body and is located between the front cell crossbeam 31 and the rear cell crossbeam 32. With the cell intermediate beam 36 arranged along the width direction of the vehicle body, when the battery pack housing is subjected to a side impact, the impact force originally concentrated on the front cell crossbeam 31 and the rear cell crossbeam 32 can be dispersed to the cell intermediate beam 36, thereby forming multiple stress-bearing structures and avoiding localized stress concentration.

[0059] Specifically, the distance between the intermediate beam 36 and the front crossbeam 31 of the battery cell is equal to the distance between the intermediate beam 36 and the rear crossbeam 32 of the battery cell. A first battery cell receiving cavity 301 is provided between the intermediate beam 36 and the front crossbeam 31 of the battery cell, and a second battery cell receiving cavity 302 is provided between the intermediate beam 36 and the rear crossbeam 32 of the battery cell.

[0060] In one embodiment, such as Figure 4 and Figure 5 As shown, the battery pack housing 30 also includes a controller rear crossbeam 37 located on the side of the cell rear crossbeam 32 away from the cell front crossbeam 31. The controller rear crossbeam 37 extends along the vehicle width direction Y, and a controller receiving cavity 303 is provided between the controller rear crossbeam 37 and the cell rear crossbeam 32. The controller receiving cavity 303 can be used to install control modules such as the battery management system, high-voltage distribution box, and relay components, realizing functional integration and space optimization of the battery pack. In addition, the controller rear crossbeam 37 and the cell rear crossbeam 32 form a double rear crossbeam structure, which can support and reinforce the rear area of ​​the battery pack 50, reducing battery pack collapse or local dents caused by external pressure.

[0061] In one embodiment, such as Figure 5 and Figure 6 As shown, the vehicle body and battery pack assembly also includes a rear crossbeam 60 for battery pack installation extending along the width direction Y of the vehicle body. The battery pack housing 30 is connected to the front floor 21 via the rear crossbeam 60. The rear crossbeam 60 is located on the side of the rear crossbeam 32 away from the front crossbeam 31, and its two ends are connected to the first sill beam 11 and the second sill beam 12, respectively. The rear crossbeam 60 improves the installation stability of the battery pack within the vehicle body, preventing loosening or displacement due to bumps or impacts. Simultaneously, the rear crossbeam 60 also provides support for the sill beams, effectively suppressing their deformation tendency.

[0062] In one embodiment, such as Figure 6As shown, the controller rear crossbeam 37 includes a support portion 371 and an extension portion 372 connected to the side of the support portion 371. The bottom surface of the battery pack installed rear crossbeam 60 is connected to the extension portion 372. The controller rear crossbeam 37 and the battery pack installed rear crossbeam 60 form an L-shaped connection structure. When the vehicle is subjected to bumps, collisions, or bottom impacts, the two crossbeams can share the force, disperse local stress, and improve structural reliability.

[0063] In one embodiment, such as Figure 9 and Figure 10 As shown, the mounting portion 352 for mounting the side beam 35 includes a vertical portion 3521 and a horizontal portion 3522. The vertical portion 3521 is disposed opposite to the second side beam 34, and a connecting portion 351 is located between the vertical portion 3521 and the second side beam 34. One side of the connecting portion 351 is connected to the side of the vertical portion 3521 near the front floor 21, and the other side of the connecting portion 351 is connected to the side of the second side beam 34 near the front floor 21. One side of the horizontal portion 3522 is connected to the side of the vertical portion 3521 away from the front floor 21, and the other side extends to the bottom of the second sill beam 12 and is fixed to the second sill beam 12 by a connector.

[0064] In one embodiment, such as Figure 11 As shown, the front floor under-mount longitudinal beam 70 is located below the front floor 21 and is disposed between the connecting part 351 and the front floor 21. The front floor under-mount longitudinal beam 70 is used to connect the mounting side beam 35 to the front floor 21. Since there is an accommodating space 40 between the mounting side beam 35 and the second side beam 34, the strength of the connection structure formed by the mounting side beam 35 and the second side beam 34 is relatively weak. The front floor under-mount longitudinal beam 70 can play a structural reinforcement role for the mounting side beam 35, which not only improves the load-bearing capacity of the area around the accommodating space 40, but also effectively disperses the load during the stress process of the vehicle body and battery pack structure assembly, thereby enhancing the structural stability and crash resistance of the battery pack housing 30 under complex working conditions.

[0065] In one embodiment, such as Figures 12 to 14 As shown, the front floor under-beam 70 includes a first end 701 and a second end 702 opposite to each other. The first end 701 extends below the first seat crossbeam 221 and is welded to the first seat crossbeam 221, and the second end 702 extends below the second seat crossbeam 222 and is welded to the second seat crossbeam 222. Specifically, the first end 701, the first seat crossbeam 221, and the front floor 21 located between the first end 701 and the first seat crossbeam 221 can be welded in three layers; the second end 702, the second seat crossbeam 222, and the front floor 21 located between the second end 702 and the second seat crossbeam 222 can also be welded in three layers.

[0066] The front floor under-mounted longitudinal beam 70, together with the first seat crossbeam 221 and the second seat crossbeam 222, forms a frame structure, thereby combining the beam structure 22 with the battery pack housing 30 to form a stable support structure. At the same time, the front floor under-mounted longitudinal beam 70 is relatively short, which can reduce the amount of material used and the weight of the structure while meeting the structural strength requirements.

[0067] In one embodiment, such as Figure 11 and Figure 12 As shown, the front floor under longitudinal beam 70 includes a base plate 71 and a bent portion 72 formed by bending the two sides of the base plate 71 toward the front floor 21. The front floor under longitudinal beam 70 also includes a welded portion 73, which is connected to the end of the bent portion 72 away from the base plate 71.

[0068] The base plate 71 can be fixed to the connecting portion 351 of the mounting side beam 35 via a connector 74. Specifically, the connector 74 includes a bolt and a nut, with the bolt passing through the connecting portion 351 and the base plate 71 before being connected to the nut. The bent portion 72 is used to connect the base plate 71 and the welded portion 73, serving as a support and structural reinforcement. The welded portion 73 is fitted to the bottom surface of the front floor 21. Using welding technology, a portion of the welded portion 73 can be welded to the front floor 21 and the seat crossbeam, as well as other portions of the welded portion 73 that do not overlap with the seat crossbeam can be welded to the front floor 21.

[0069] In one embodiment, the thickness of the base plate 71, the bent portion 72, and the welded portion 73 ranges from 1 mm to 2 mm. For example, the thickness of the base plate 71, the bent portion 72, and the welded portion 73 can be 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, or 2 mm.

[0070] In one embodiment, the distance between the two bends 72 ranges from 40mm to 50mm. For example, the distance between the two bends 72 can be 40mm, 42mm, 45mm, 48mm, or 50mm.

[0071] In one embodiment, such as Figure 10 and Figure 11 As shown, the front floor under-mount longitudinal beam 70 is connected to the side of the connecting portion 351 of the mounting side beam 35 near the second side beam 34. This arrangement avoids the formation of a cantilever structure between the connecting portion 351 and the second side beam 34, allowing the front floor under-mount longitudinal beam 70 to be structurally reinforced near the connection point between the connecting portion 351 and the second side beam 34, thereby improving the local load-bearing capacity and structural stability of the battery pack casing.

[0072] This application also provides a vehicle comprising an engine, an electric motor, a circuit system, and the aforementioned vehicle body and battery pack assembly. The engine provides mechanical energy by burning fuel to drive the wheels. Alternatively, the battery pack transmits electrical energy to the electric motor via the circuit system, and the electric motor converts the electrical energy into mechanical energy to drive the vehicle's wheels, thereby enabling the vehicle to move. The vehicle body and battery pack assembly provides stable support for the battery pack, significantly improving the overall vehicle safety and reliability.

[0073] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A vehicle body and battery pack structural assembly, characterized in that, The vehicle body and battery pack assembly includes: The first and second door sill beams extend along the length of the vehicle body, respectively. A front floor assembly, including a front floor; the two sides of the front floor along the width direction of the vehicle body are respectively connected to the first sill beam and the second sill beam; A battery pack housing is located between the first sill beam and the second sill beam, and on one side of the front floor along the vehicle height direction; the battery pack housing includes a first side beam, a second side beam, and a mounting side beam extending along the vehicle length direction; the first side beam is connected to the first sill beam; the mounting side beam includes a connecting portion and a mounting portion, the mounting portion being connected to the second sill beam; the second side beam is connected to the mounting portion via the connecting portion; the mounting portion, the connecting portion, and the second side beam form an accommodating space; A front floor under-mounted longitudinal beam is disposed between the connecting part and the front floor and extends along the length of the vehicle body, for connecting the mounting side beam to the front floor.

2. The vehicle body and battery pack structure assembly according to claim 1, characterized in that, The front floor assembly further includes a beam structure; in the vehicle height direction, the beam structure is located on the side of the front floor away from the battery pack housing; the beam structure includes a first seat crossbeam and a second seat crossbeam extending along the vehicle width direction; the first seat crossbeam and the second seat crossbeam are spaced apart along the vehicle length direction; The front floor under-mount longitudinal beam includes a first end and a second end opposite to each other; the first end extends below the first seat crossbeam and is connected to the first seat crossbeam; the second end extends below the second seat crossbeam and is connected to the second seat crossbeam.

3. The vehicle body and battery pack structure assembly according to any one of claims 1-2, characterized in that, In the vehicle width direction, the front floor under-longitudinal beam is disposed on the side of the connection portion of the mounting side beam near the second side beam.

4. The vehicle body and battery pack structure assembly according to claim 1, characterized in that, The front floor assembly further includes a beam structure; in the vehicle height direction, the beam structure is located on the side of the front floor away from the battery pack housing; the beam structure includes a first seat crossbeam and a second seat crossbeam extending along the vehicle width direction; the first seat crossbeam and the second seat crossbeam are spaced apart along the vehicle length direction; The beam structure also includes a central channel beam extending along the length of the vehicle body, and a first front floor longitudinal beam and a second front floor longitudinal beam located on both sides of the central channel beam; one end of the first front floor longitudinal beam is connected to the first seat crossbeam, and the other end extends along the length of the vehicle body in a direction away from the second seat crossbeam; one end of the second front floor longitudinal beam is connected to the first seat crossbeam, and the other end extends along the length of the vehicle body in a direction away from the second seat crossbeam.

5. The vehicle body and battery pack structure assembly according to claim 1, characterized in that, The battery pack housing also includes a front crossbeam for battery cells, a rear crossbeam for battery cells extending along the width direction of the vehicle body, and a rear crossbeam for controller located on the side of the rear crossbeam for battery cells away from the front crossbeam for battery cells. A controller receiving cavity is provided between the rear crossbeam for controller and the rear crossbeam for battery cells.

6. The vehicle body and battery pack structure assembly according to claim 1 or claim 4, characterized in that, The battery pack housing also includes a front crossbeam and a rear crossbeam extending along the width direction of the vehicle body; the vehicle body and battery pack structure assembly includes a rear crossbeam for battery pack installation extending along the width direction of the vehicle body; the battery pack housing is connected to the front floor via the rear crossbeam for battery pack installation; the rear crossbeam for battery pack installation is located on the side of the rear crossbeam for battery cells away from the front crossbeam for battery cells; the two ends of the rear crossbeam for battery pack installation are respectively connected to the first sill beam and the second sill beam.

7. The vehicle body and battery pack structure assembly according to claim 6, characterized in that, The battery pack housing also includes a controller rear crossbeam located on the side of the battery cell rear crossbeam away from the battery cell front crossbeam. The controller rear crossbeam extends along the width direction of the vehicle body, and a controller receiving cavity is provided between the controller rear crossbeam and the battery cell rear crossbeam for accommodating the controller of the battery pack.

8. The vehicle body and battery pack structure assembly according to claim 7, characterized in that, The controller rear crossbeam includes a support portion and an extension portion connected to the side of the support portion; the bottom surface of the crossbeam is connected to the extension portion after the battery pack is installed.

9. The vehicle body and battery pack structure assembly according to claim 7, characterized in that, The battery pack housing also includes a cell intermediate beam extending along the width direction of the vehicle body; the cell intermediate beam is located between the front crossbeam and the rear crossbeam of the cell.

10. The vehicle body and battery pack structure assembly according to claim 9, characterized in that, The front floor assembly further includes a beam structure; in the vehicle height direction, the beam structure is located on the side of the front floor away from the battery pack housing; the beam structure includes a first seat crossbeam, a second seat crossbeam, and a third seat crossbeam extending along the vehicle width direction; the first seat crossbeam, the second seat crossbeam, and the third seat crossbeam are spaced apart along the vehicle length direction, and the third seat crossbeam is located on the side of the second seat crossbeam away from the first seat crossbeam.

11. A vehicle, characterized in that, The vehicle includes the vehicle body and battery pack structure assembly as described in any one of claims 1 to 10.

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