Vehicle body structure and vehicle

Abstract

The application provides a vehicle body structure and a vehicle. The vehicle body structure comprises a front wall cross beam assembly and a floor. The front wall cross beam assembly is connected to one end of the floor close to the vehicle head. The front wall cross beam assembly comprises a lower cross beam. The lower cross beam is arranged below the floor. The lower cross beam extends to a preset distance close to the vehicle tail and forms a first cavity structure with the floor. In the width direction of the vehicle body, the lower cross beam is used to extend to the rocker of the vehicle body. When the vehicle collides, the impact force on the front wall cross beam assembly can be transmitted to the lower cross beam. The first cavity structure can be used to offset the impact force, so that the lower cross beam can replace the traditional longitudinal beam structure. The lower cross beam can extend to the rocker of the vehicle body. The lower cross beam can also transmit the impact force to the rockers on the left and right sides. The force transmission channel can be increased to avoid the impact force being too concentrated. Therefore, the integrity of the passenger cabin structure can be ensured in the vehicle collision, and the harm to the passengers can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts, in particular to a vehicle body structure and a vehicle. BACKGROUND

[0002] With the development of the automobile industry, nowadays, basically every family has a car, and people pay more and more attention to the safety performance of the car. Among them, the conventional fuel automobile designs a longitudinal beam and other force transmission structures under the automobile floor to improve the transmission effect of the collision force, thereby reducing the invasion risk to the passenger compartment when the automobile is subjected to a frontal collision.

[0003] However, since the battery pack of the electric automobile is usually arranged under the automobile floor, when designing the vehicle body structure, the space is limited, and there is not enough space under the floor of the electric automobile to install the longitudinal beam and other force transmission structures, resulting in that when the vehicle is subjected to a collision, for example, a frontal collision, there are fewer force transmission channels, and thus the integrity of the passenger compartment structure cannot be guaranteed, which may cause great harm to the passengers. SUMMARY

[0004] The problem solved by the present application is how to increase the force transmission channel under the premise of ensuring the installation space of the battery pack, so as to ensure the integrity of the passenger compartment structure in the vehicle collision and reduce the harm to the passengers.

[0005] To solve the above problems, the present application provides a vehicle body structure, which comprises a front wall cross beam assembly and a floor, the front wall cross beam assembly is connected to one end of the floor close to the vehicle head, the front wall cross beam assembly comprises a lower cross beam, the lower cross beam is arranged below the floor, and the lower cross beam extends to a preset distance close to the vehicle tail, and forms a first cavity structure with the floor, along the width direction of the vehicle body, the lower cross beam is used to extend to the connection with the rocker of the vehicle body.

[0006] The technical effect of the present application is that the front bulkhead cross beam assembly can be arranged at the vehicle head, and the front bulkhead cross beam assembly can be connected with the end of the floor close to the vehicle head, the front bulkhead cross beam assembly can include a lower cross beam, the lower cross beam can be arranged below the floor, and the lower cross beam can extend to the direction close to the vehicle tail by a preset distance, the length of the preset distance can be designed according to the size of the battery pack, and it is ensured that there is enough space below the floor to install the battery pack. The lower cross beam can form a first cavity structure with the floor, when the vehicle collides, the impact force received by the front bulkhead cross beam assembly can be transmitted to the lower cross beam, the first cavity structure can be used to offset the impact force, so that the lower cross beam can replace the traditional longitudinal beam structure, and the lower cross beam can extend to the rocker of the vehicle body along the width direction of the vehicle body, so that the lower cross beam can also transmit the impact force to the rockers on the left and right sides, the force transmission channel can be increased, and the impact force is avoided to be too concentrated, so that the integrity of the passenger compartment structure can be ensured in the vehicle collision, and the harm to the passengers is reduced.

[0007] Preferably, a connecting plate is arranged below the floor, the connecting plate connects the lower cross beam and the floor, and the connecting plate extends along the lower cross beam to connect with the rocker.

[0008] Preferably, the front bulkhead cross beam assembly further comprises a front bulkhead plate, a front bulkhead cross beam and a cross beam outer side reinforcing plate, along the length direction of the vehicle body, the front bulkhead plate and the cross beam outer side reinforcing plate are arranged on the opposite sides of the front bulkhead cross beam, and the front bulkhead cross beam, the front bulkhead plate and the cross beam outer side reinforcing plate form a second cavity structure.

[0009] Preferably, the front bulkhead plate is connected with the floor, and the lower cross beam is connected with the cross beam outer side reinforcing plate.

[0010] Preferably, the vehicle body structure further comprises a middle channel and an inclined support beam, the middle channel is arranged above the floor, one end of the middle channel is connected with the front bulkhead cross beam assembly, the inclined support beam is arranged at an angle with the middle channel, one end of the inclined support beam is connected with the middle channel, and the other end of the inclined support beam extends towards the front bulkhead cross beam assembly and is connected with the front bulkhead cross beam assembly.

[0011] Preferably, the vehicle body structure further comprises an A-pillar inclined support structure, the A-pillar inclined support structure is arranged at an angle with the inclined support beam, and the A-pillar inclined support structure connects the inclined support beam and the front bulkhead cross beam assembly.

[0012] Preferably, the floor is provided with a first connecting edge, and the floor is connected with the A-pillar inclined support structure through the first connecting edge.

[0013] Preferably, the oblique support beam is provided with a second connecting edge, which is connected with the first connecting edge and the A-pillar oblique support structure respectively.

[0014] Preferably, the front wall cross beam assembly is provided with a third connecting edge, which is connected with the A-pillar oblique support structure through the third connecting edge.

[0015] The present application also provides a vehicle comprising the vehicle body structure as described above.

[0016] The vehicle has the same advantages as the vehicle body structure, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic diagram of a first perspective view of a vehicle body structure according to an embodiment of the present application;

[0018] Figure 2 Fig. 2 is a structural schematic diagram of a second perspective view of a vehicle body structure according to an embodiment of the present application;

[0019] Figure 3 Fig. 3 is a partial enlarged schematic diagram of a vehicle body structure according to an embodiment of the present application;

[0020] Figure 4 Fig. 4 is a sectional schematic diagram of a vehicle body structure according to an embodiment of the present application.

[0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] 1, front wall cross beam assembly; 11, lower cross beam; 12, front wall panel; 13, front wall cross beam; 14, cross beam outer side reinforcing plate; 15, third connecting edge; 2, floor; 21, connecting plate; 22, first connecting edge; 3, first cavity structure; 4, rocker; 5, second cavity structure; 6, middle channel; 7, oblique support beam; 71, second connecting edge; 8, A-pillar oblique support structure. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0024] It should be noted that in the coordinate system XY provided herein, the positive direction of the X-axis represents the right direction, the negative direction of the X-axis represents the left direction, the positive direction of the Y-axis represents the front direction, and the negative direction of the Y-axis represents the rear direction. At the same time, it should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein.

[0025] Referring to Figure 1 , Figure 2 and Figure 4 , a vehicle body structure according to an embodiment of the present application includes a front wall beam assembly 1 and a floor 2, the front wall beam assembly 1 is connected to the floor 2 near the front end of the vehicle body, the front wall beam assembly 1 includes a lower beam 11, the lower beam 11 is arranged below the floor 2, and the lower beam 11 extends in the direction close to the rear end of the vehicle body by a predetermined distance, and the lower beam 11 and the floor 2 form a first cavity structure 3, and the lower beam 11 extends in the width direction of the vehicle body to connect with the rocker 4 of the vehicle body.

[0026] Specifically, the vehicle body structure can include a front wall beam assembly 1 and a floor 2, the front wall beam assembly 1 can be arranged at a position close to the front end of the vehicle body, and the front wall beam assembly 1 is arranged along the width direction of the vehicle body. In Figure 1 , the X-axis is the width direction of the vehicle body, and the Y-axis is the length direction of the vehicle body. The front wall beam assembly 1 can be perpendicular to the floor 2 and connected to the floor 2 near the front end of the vehicle body, and preferably, the front wall beam assembly 1 is welded to the floor 2. The front wall beam assembly 1 can include a lower beam 11, the lower beam 11 can be arranged below the floor 2, and the lower beam 11 can extend in the length direction of the vehicle body towards the direction close to the rear end of the vehicle body by a predetermined distance, the length of the predetermined distance can be designed according to the size of the battery pack to ensure that there is enough space below the floor 2 to install the battery pack.

[0027] And the lower beam 11 can form a first cavity structure 3 with the floor 2, when the vehicle is in a collision, the front wall beam assembly 1 located at the front end of the vehicle is first impacted, the impact force can be transmitted to the lower beam 11, and the first cavity structure 3 can be used to offset the impact force, so that the lower beam 11 can replace the traditional longitudinal beam structure. And the lower beam 11 can extend in the width direction of the vehicle body to connect with the rocker 4 of the vehicle body, and the lower beam 11 can also transmit the impact force to the rockers 4 on the left and right sides, which can increase the force transmission channel and avoid the impact force being too concentrated, thereby ensuring the integrity of the passenger compartment structure in vehicle collision and reducing the harm to the passengers.

[0028] Referring to Figure 2 andFigure 4 As shown in some embodiments, a connecting plate 21 is arranged below the floor 2, the connecting plate 21 connects the lower cross beam 11 and the floor 2, and the connecting plate 21 extends along the lower cross beam 11 to connect with the rocker 4.

[0029] Specifically, the connecting plate 21 can also be arranged below the floor 2, and the lower cross beam 11 can be connected with the floor 2 through the connecting plate 21. In this embodiment, the opposite sides of the connecting plate 21 are in contact with the lower cross beam 11 and the floor 2 respectively, and the connecting plate 21 is fixed with the lower cross beam 11 and the floor 2 respectively by welding, so that the lower cross beam 11 and the floor 2 are firmly fixed together.

[0030] Moreover, the connecting plate 21 can also extend along the lower cross beam 11 to the rocker 4, and the connecting plate 21 can make the connection between the lower cross beam 11 and the floor 2 more stable, and when the vehicle is subjected to a frontal impact, the impact force can also be transmitted to the left and right rockers 4 through the connecting plate 21, so that the force transmission channel of the impact force is more stable.

[0031] Referring to Figure 4 As shown in some embodiments, the front cross beam assembly 1 further comprises a front wall 12, a front cross beam 13 and a cross beam outer side reinforcing plate 14, along the length direction of the vehicle body, the front wall 12 and the cross beam outer side reinforcing plate 14 are arranged on the opposite sides of the front cross beam 13, and the front cross beam 13, the front wall 12 and the cross beam outer side reinforcing plate 14 form a second cavity structure 5.

[0032] Specifically, the front cross beam assembly 1 can comprise a front wall 12, a front cross beam 13 and a cross beam outer side reinforcing plate 14, along the length direction of the vehicle body, the front wall 12 and the cross beam outer side reinforcing plate 14 can be arranged on the opposite sides of the front cross beam 13 respectively. In this embodiment, the shapes of the front cross beam 13 and the front wall 12 can both be Z-shaped, and the opposite sides of the front cross beam 13 can be connected with the front wall 12 and the cross beam outer side reinforcing plate 14 respectively, and the front wall 12 can also be connected with the front cross beam 13 and the cross beam outer side reinforcing plate 14 respectively, so that the front cross beam 13, the front wall 12 and the cross beam outer side reinforcing plate 14 can be connected in sequence to form the second cavity structure 5. When the front cross beam assembly 1 is subjected to an impact, the second cavity structure 5 can provide a deformation space to offset part of the impact force, and the ability of the front cross beam assembly 1 to resist impact can be increased.

[0033] Referring to Figure 4 As shown in some embodiments, the front wall 12 is connected with the floor 2, and the lower cross beam 11 is connected with the cross beam outer side reinforcing plate 14.

[0034] Specifically, the front wall 12 can be in a Z shape, and in an inverted Z shape, one end of the front wall 12 can be connected to the floor 2, and when the vehicle is in a collision, the impact force can be transmitted to the floor 2 through the front wall 12. The cross beam outer side reinforcing plate 14 can extend downward to be connected to the lower cross beam 11, and when the vehicle is in a collision, the impact force can be transmitted to the lower cross beam 11, so that the lower cross beam 11 can be used to absorb the impact force.

[0035] Referring to Figure 1 and Figure 3 In some embodiments, the vehicle body structure further includes a middle channel 6 and an inclined support beam 7, the middle channel 6 is arranged above the floor 2, one end of the middle channel 6 is connected to the front wall cross beam assembly 1, the inclined support beam 7 is arranged at an angle with the middle channel 6, one end of the inclined support beam 7 is connected to the middle channel 6, and the inclined support beam 7 extends towards the front wall cross beam assembly 1, the other end of the inclined support beam 7 is connected to the front wall cross beam assembly 1.

[0036] Specifically, the vehicle body structure can further include a middle channel 6 and an inclined support beam 7, the middle channel 6 can be arranged near the front of the vehicle body in the length direction of the vehicle body, and the middle channel 6 can be located above the floor 2. One end of the middle channel 6 can be connected to the front wall cross beam assembly 1, and in this embodiment, the middle channel 6 can be arranged perpendicular to the front wall cross beam assembly 1, and the middle channel 6 can be arranged at the middle position of the vehicle body.

[0037] The inclined support beam 7 can be arranged at an angle with the middle channel 6, and one end of the inclined support beam 7 can be connected to the middle channel 6, and in this embodiment, the angle between the inclined support beam 7 and the middle channel 6 is an acute angle, for example, 45° to 75°. And the inclined support beam 7 can extend straight towards the front wall cross beam assembly 1, so that the other end of the inclined support beam 7 can be connected to the front wall cross beam assembly 1, so that the front wall cross beam assembly 1, the middle channel 6 and the inclined support beam 7 can form a triangular structure.

[0038] When the vehicle is subjected to a frontal impact, the impact force can be transmitted to the front wall cross beam assembly 1, the front wall cross beam assembly 1 can disperse the impact force to the middle channel 6 and the inclined support beam 7, the triangular structure formed by the inclined support beam 7, the middle channel 6 and the front wall cross beam assembly 1 can absorb the impact force, which can make the front part of the passenger compartment structure more stable, thereby ensuring the integrity of the passenger compartment structure and reducing the harm to the passengers in the vehicle during the collision.

[0039] In this embodiment, two inclined support beams 7 can be provided, and the two inclined support beams 7 are respectively located on the left and right sides of the middle channel 6. For the convenience of description, the inclined support beam 7 on the left side is defined as the first inclined support beam 7, and the inclined support beam 7 on the right side is defined as the second inclined support beam 7.

[0040] The first inclined support beam 7 can be set at an angle to the left side wall of the central channel 6, and similarly, the second inclined support beam 7 can be set at an angle to the right side wall of the central channel 6. The two ends of the first inclined support beam 7 can be connected to the front crossbeam assembly 1 and the left side wall of the central channel 6, respectively, and the two ends of the second inclined support beam 7 can be connected to the front crossbeam assembly 1 and the right side wall of the central channel 6, respectively. The extension lines of the first and second inclined support beams 7 intersect on the central channel 6.

[0041] This allows the first inclined support beam 7, the central channel 6, and the front crossbeam assembly 1 to form a small triangle, and the second inclined support beam 7, the central channel 6, and the front crossbeam assembly 1 to form another small triangle. The first inclined support beam 7, the second inclined support beam 7, and the front crossbeam assembly 1 can also form a large triangular structure composed of the two small triangles above. Multiple triangular structures can be formed, which can further increase the structural strength, ensure the integrity of the passenger compartment structure, and reduce the injury to the occupants in a collision.

[0042] See Figure 1 and Figure 3 As shown, in some embodiments, the vehicle body structure further includes an A-pillar inclined support structure 8, which is arranged at an angle to the inclined support beam 7, and the A-pillar inclined support structure 8 connects the inclined support beam 7 and the front crossbeam assembly 1.

[0043] Specifically, the vehicle body structure may also include an A-pillar inclined support structure 8, which may be set at an angle to the inclined support beam 7, and the side wall of the A-pillar inclined support structure 8 may be connected to one end of the inclined support beam 7. One end of the A-pillar inclined support structure 8 may be connected to the front crossbeam assembly 1. The connection point between the inclined support beam 7 and the A-pillar inclined support structure 8 and the connection point between the A-pillar inclined support structure 8 and the front crossbeam assembly 1 may be close to the same point, so that the front crossbeam assembly 1, the inclined support beam 7 and the central channel 6 can maintain an approximately triangular structure.

[0044] When a vehicle is subjected to a frontal impact, the impact force can be transmitted to the front crossbeam assembly 1. The front crossbeam assembly 1 can disperse the impact force to the A-pillar diagonal support structure 8. The A-pillar diagonal support structure 8 can disperse the impact force to the A-pillar of the vehicle body, which can avoid the impact force being too concentrated, thereby ensuring the integrity of the passenger compartment structure and reducing the injury to the occupants in the collision.

[0045] In this embodiment, two A-pillar inclined support structures 8 may be provided, which may be located on the left and right sides of the central channel 6, respectively. For ease of description, the left A-pillar inclined support structure 8 is defined as the first A-pillar inclined support structure 8, and the right A-pillar inclined support structure 8 is defined as the second A-pillar inclined support structure 8.

[0046] The first inclined support beam 7 can be arranged at an angle with the first A-pillar inclined support structure 8, and the second inclined support beam 7 can be arranged at an angle with the second A-pillar inclined support structure 8. The two ends of the first inclined support beam 7 can be connected with the first A-pillar inclined support structure 8 and the left side wall of the middle channel 6 respectively, and the two ends of the second inclined support beam can be connected with the second A-pillar inclined support structure 8 and the right side wall of the middle channel 6 respectively, so that the first inclined support beam 7, the second inclined support beam, the first A-pillar inclined support structure 8 and the second A-pillar inclined support structure 8 can form a W-shaped structure.

[0047] When the vehicle is subjected to a frontal impact, the impact force can be transmitted to the front beam assembly 1, the front beam assembly 1 can transmit the impact force to the A-pillar inclined support structure 8 and the middle channel 6, and the first A-pillar inclined support structure 8 and the second A-pillar inclined support structure 8 can transmit the impact force to the A-pillars on the left and right sides of the vehicle body, so that the impact force can be further avoided from being too concentrated.

[0048] Referring to Figure 1 and Figure 3 In some embodiments, the floor 2 is provided with a first connecting edge 22, and the floor 2 is connected with the A-pillar inclined support structure 8 through the first connecting edge 22.

[0049] Specifically, the edge of the floor 2 can be bent and extended to form the first connecting edge 22. In this embodiment, the edge of the floor 2 can be bent and extended upward to form the first connecting edge 22, and the floor 2 can be connected with the A-pillar inclined support structure 8 through the first connecting edge 22, so that the A-pillar inclined support structure 8 is more firmly connected with the floor 2, and when the vehicle is subjected to a frontal impact, the force transmitted to the A-pillar inclined support structure 8 can be dispersed to the floor 2.

[0050] Referring to Figure 1 and Figure 3 In some embodiments, the inclined support beam 7 is provided with a second connecting edge 71, and the second connecting edge 71 is connected with the first connecting edge 22 and the A-pillar inclined support structure 8 respectively.

[0051] Specifically, the end of the inclined support beam 7 close to the A-pillar inclined support structure 8 can be provided with a plurality of second connecting edges 71, and the plurality of second connecting edges 71 can be respectively covered on the first connecting edge 22 and the A-pillar inclined support structure 8, and the second connecting edges 71 can be respectively connected with the first connecting edge 22 and the A-pillar inclined support structure 8 by welding or screwing, so that the inclined support beam 7 can be firmly connected with the floor 2 and the A-pillar inclined support structure 8.

[0052] Referring to Figure 1 and Figure 3 In some embodiments, the front beam assembly 1 is provided with a third connecting edge 15, and the front beam assembly 1 is connected with the A-pillar inclined support structure 8 through the third connecting edge 15.

[0053] Specifically, the front wall transverse beam assembly 1 is respectively provided with a third connecting edge 15 on the left and right sides, the third connecting edge 15 covers one end of the A-pillar inclined support structure 8, and the third connecting edge 15 can be connected with the A-pillar inclined support structure 8 through welding or screwing, so that the front wall transverse beam assembly 1 and the A-pillar inclined support structure 8 can be more firmly connected, and the force transmission channel of the front wall transverse beam assembly 1 and the A-pillar inclined support structure 8 can also be more firm.

[0054] In some embodiments, the A-pillar inclined support structure 8 is internally provided with a reinforcing plate.

[0055] Specifically, the A-pillar inclined support structure 8 has a cavity structure, and the cavity structure can be internally provided with a reinforcing plate, the reinforcing plate can increase the structural strength of the A-pillar inclined support structure 8, so that the A-pillar inclined support structure 8 can withstand greater force, and further ensure the integrity of the passenger compartment structure.

[0056] Another embodiment of the application is a vehicle comprising the vehicle body structure as described above.

[0057] Although the application is disclosed as above, the protection scope of the application is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the application, and these changes and modifications will fall within the protection scope of the application.

Claims

1. A vehicle body structure characterized by comprising: The body structure comprises a front bulkhead assembly (1) and a floor (2), the front bulkhead assembly (1) is connected with the floor (2) at the end close to the vehicle head, the front bulkhead assembly (1) comprises a lower cross beam (11), a front bulkhead (12), a front bulkhead cross beam (13) and a cross beam outer side reinforcing plate (14), the lower cross beam (11) is arranged below the floor (2), and the lower cross beam (11) extends to the direction close to the vehicle tail by a preset distance, and the lower cross beam (11) and the floor (2) form a first cavity structure (3), along the width direction of the vehicle body, the lower cross beam (11) is used for extending to be connected with the rocker (4) of the vehicle body, the cross beam outer side reinforcing plate (14) is located at the end of the floor (2) close to the vehicle head, the cross beam outer side reinforcing plate (14) extends downward to be connected with the lower cross beam (11), along the length direction of the vehicle body, the front bulkhead (12) and the cross beam outer side reinforcing plate (14) are installed on the opposite two sides of the front bulkhead cross beam (13), and the front bulkhead cross beam (13), the front bulkhead (12) and the cross beam outer side reinforcing plate (14) form a second cavity structure (5).

2. The vehicle body structure according to claim 1, characterized by The lower side of the floor (2) is provided with a connecting plate (21), the connecting plate (21) connects the lower cross beam (11) and the floor (2), and the connecting plate (21) extends along the lower cross beam (11) to be connected with the rocker (4).

3. The vehicle body structure according to claim 1, characterized by The front bulkhead (12) is connected with the floor (2).

4. The vehicle body structure according to claim 1, characterized by Further comprising a middle channel (6) and an inclined support beam (7), the middle channel (6) is arranged above the floor (2), one end of the middle channel (6) is connected with the front bulkhead assembly (1), the inclined support beam (7) is arranged at an angle with the middle channel (6), one end of the inclined support beam (7) is connected with the middle channel (6), and the other end of the inclined support beam (7) extends to the direction of the front bulkhead assembly (1) and is connected with the front bulkhead assembly (1).

5. The vehicle body structure according to claim 4, characterized by Further comprising an A-pillar inclined support structure (8), the A-pillar inclined support structure (8) is arranged at an angle with the inclined support beam (7), and the A-pillar inclined support structure (8) connects the inclined support beam (7) and the front bulkhead assembly (1).

6. The vehicle body structure according to claim 5, characterized by The floor (2) is provided with a first connecting edge (22), and the floor (2) is connected with the A-pillar inclined support structure (8) through the first connecting edge (22).

7. The vehicle body structure according to claim 6, characterized by The inclined support beam (7) is provided with a second connecting edge (71), and the second connecting edge (71) is connected with the first connecting edge (22) and the A-pillar inclined support structure (8) respectively.

8. The vehicle body structure according to claim 5, characterized by The front bulkhead assembly (1) is provided with a third connecting edge (15), and the front bulkhead assembly (1) is connected with the A-pillar inclined support structure (8) through the third connecting edge (15).

9. A vehicle characterized by comprising: The body structure comprises the body structure as claimed in any one of claims 1-8.

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