Anti-collision structure, vehicle body frame and vehicle

Abstract

The invention relates to an anti-collision structure, a vehicle body frame and a vehicle, the anti-collision structure comprises a doorsill beam assembly, a seat cross beam assembly, a bottom plate assembly and a crushing assembly, and the doorsill beam assembly comprises a doorsill outer beam with a first hollow structure; the seat cross beam assembly is connected to the threshold outer beam in a crushing mode and extends towards the interior of the vehicle in the direction away from the threshold outer beam. The floor assembly comprises a floor longitudinal beam with a second hollow structure, and the crushing assembly is arranged between the threshold outer beam and the floor longitudinal beam. According to the anti-collision structure, when the side edge of the vehicle is collided, firstly, the threshold outer beam with the first hollow structure collapses to reduce part of impact force generated during collision; then, the crushing assembly and the seat cross beam assembly collapse together to reduce part of impact force, and finally, the second hollow structure and the seat cross beam assembly collapse to absorb energy, so that the damage of the battery pack caused by the impact force is greatly reduced or even avoided, and the safety performance of the vehicle is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle body structure design, and in particular, to a collision avoidance structure, a vehicle body frame, and a vehicle. Background Art

[0002] In electric vehicles, to ensure their safety performance, it is crucial to prevent the battery pack from being damaged by external impacts. Currently, the protection form for the battery pack in electric vehicles is relatively single. Most often, the strength of vehicle body structures such as the sill beam is increased to prevent the battery pack from being damaged when the vehicle body is impacted laterally. However, this method is costly and, due to the relatively few energy-absorbing structures in the vehicle body, the vehicle body structures such as the sill beam cannot fully absorb the energy generated during a vehicle collision, resulting in the battery pack being impacted and damaged, thus reducing the safety performance of the electric vehicle. Summary of the Invention

[0003] The purpose of the present disclosure is to provide a collision avoidance structure, a vehicle body frame, and a vehicle. The collision avoidance structure has multiple energy-absorbing structures to reduce or even avoid the battery pack from being impacted by external forces.

[0004] To achieve the above purpose, the present disclosure provides a collision avoidance structure, including: a sill beam assembly including a sill outer beam having a first hollow structure; a seat crossbeam assembly crushably connected to the sill outer beam and extending towards the interior of the vehicle in a direction away from the sill outer beam; a floor assembly including a floor longitudinal beam having a second hollow structure; and a crush assembly disposed between the sill outer beam and the floor longitudinal beam.

[0005] Optionally, the seat crossbeam assembly is formed with a first crush portion corresponding to the crush assembly and a second crush portion corresponding to the floor longitudinal beam.

[0006] Optionally, the seat crossbeam assembly includes a seat crossbeam body; the first crush portion and the second crush portion are configured as raised structures and / or recessed structures formed on the seat crossbeam body.

[0007] Optionally, the crush assembly includes a crush member and a mounting bracket for supporting the crush member; both ends of the mounting bracket are respectively connected to the sill outer beam and the floor longitudinal beam; at least a part of the crush member can be attached to the sill outer beam and the floor longitudinal beam when the seat crossbeam assembly undergoes crush.

[0008] Optionally, the crush member includes a first attachment portion facing the sill outer beam and a second attachment portion facing the floor longitudinal beam; the length of the cross-section of the first attachment portion in the Z direction is less than the length of the cross-section of the second attachment portion in the Z direction; and / or the crush member has a third hollow structure.

[0009] Optionally, the sill beam assembly further includes a sill inner beam disposed within the sill outer beam and used to strengthen the strength of the sill beam assembly; the sill outer beam includes a first beam body on a side away from the seat crossbeam assembly and a second beam body on a side close to the seat crossbeam assembly and connected to the first beam body, both the first beam body and the second beam body having bent portions; the sill inner beam includes a first sill inner beam with at least a partial area disposed at the bent portion of the first beam body; and / or a second sill inner beam with at least a partial area connected to the inner wall of the second beam body and having a convex portion protruding toward the first beam body side.

[0010] Optionally, the floor longitudinal beam is configured as a U-shaped beam with a U-shaped cavity in cross-section, and the U-shaped cavity forms the second hollow structure.

[0011] In a second aspect of the present disclosure, there is provided a vehicle body frame including a battery pack and the above anti-collision structure. The battery pack is disposed adjacent to the floor longitudinal beam, and the battery pack is connected to the floor longitudinal beam through a battery pack longitudinal beam; there is an anti-collision gap between the battery pack and the floor longitudinal beam for preventing the battery pack from colliding with the floor longitudinal beam after the floor longitudinal beam collapses.

[0012] Optionally, the floor assembly further includes a floor panel for connecting the floor longitudinal beam to the sill outer beam; on both opposite side walls of the floor longitudinal beam close to the floor panel side, there are connecting portions that are folded outward toward the outside of the floor longitudinal beam, and the floor longitudinal beam is connected to the floor panel through the connecting portions; the projection of the anti-collision gap on the floor panel can cover the projection of the connecting portion on the floor panel on the side close to the battery pack.

[0013] In a third aspect of the present disclosure, there is provided a vehicle including the above vehicle body frame.

[0014] Through the above technical solution, when the side of the vehicle is impacted, the anti-collision structure of the present disclosure first causes the sill outer beam with the first hollow structure to collapse to reduce a part of the impact force generated during the impact, and then the crush assembly and the seat crossbeam assembly collapse together to reduce a part of the impact force. Finally, the second hollow structure and the seat crossbeam assembly collapse to absorb energy, so as to greatly reduce or even avoid damage to the battery pack due to the impact force, thereby improving the safety performance of the vehicle.

[0015] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0017] Figure 1 is a schematic structural view of the anti-collision structure provided by an embodiment of the present disclosure;

[0018] Figure 2 is a schematic structural view when the crushing component of the anti-collision structure provided by an embodiment of the present disclosure is connected to the outer sill beam and the longitudinal floor beam;

[0019] Figure 3 is a schematic structural view when the battery pack of the anti-collision structure provided by an embodiment of the present disclosure is connected to the longitudinal floor beam.

[0020] Explanation of reference numerals

[0021] 1 - sill beam assembly; 11 - outer sill beam; 1101 - first beam body; 1102 - second beam body; 1103 - bending part; 12 - inner sill beam; 1201 - first inner sill beam; 1202 - second inner sill beam; 1203 - protruding part; 2 - seat crossbeam assembly; 201 - seat crossbeam body; 201a - first crushing part; 201b - second crushing part; 3 - floor assembly; 301 - longitudinal floor beam; 302 - U-shaped cavity; 303 - floor panel; 304 - connecting part; 4 - crushing component; 41 - crushing part; 4101 - first fitting part; 4102 - second fitting part; 42 - mounting bracket; 5 - battery pack; 501 - battery pack longitudinal beam; 6 - anti-collision gap; A - first hollow structure; B - second hollow structure; C - third hollow structure. Detailed implementation manners

[0022] The following will describe in detail the specific implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0023] In the present disclosure, unless otherwise stated, the orientation terms such as "upper" and "lower" generally refer to "upper" and "lower" relative to each other in the direction of gravity when the corresponding components are in use. Specifically, reference may be made to Figures 1 to 3 the drawing direction shown, "inner" and "outer" refer to "inner" and "outer" relative to the contour of the corresponding component itself; the "Z direction" is the vertical height direction when the vehicle is in normal use. Specifically, reference may be made to Figures 1 to 3 the drawing direction. In addition, the terms "first", "second", "third", etc. used in the present disclosure are used to distinguish one element from another, and do not have sequentiality and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure, and should not be construed as a limitation to the present disclosure.

[0024] To achieve the above object, asFigures 1 to 3 As shown in the figure, in the first aspect of the present disclosure, a collision avoidance structure is provided, including a sill beam assembly, a seat crossbeam assembly, a floor assembly, and a crush component. Among them, the sill beam assembly 1 includes a sill outer beam 11 having a first hollow structure A; the seat crossbeam assembly 2 is crushably connected to the sill outer beam 11 and extends towards the interior of the vehicle in a direction away from the sill outer beam 11; the floor assembly 3 includes a floor longitudinal beam 301 having a second hollow structure B, and the crush component 4 is disposed between the sill outer beam 11 and the floor longitudinal beam 301. When the side of the vehicle is impacted, the sill outer beam 11 will first receive the impact. Since it has the first hollow structure A inside, after being impacted, it will be crushed and absorb part of the impact energy, thereby reducing the impact force received by the subsequent structure. That is, the sill beam assembly 1 having the first hollow structure A forms the first energy absorption structure for the vehicle to absorb impact energy; when the subsequent impact energy is transmitted to the seat crossbeam assembly 2 and the crush component 4, the area of the crush component 4 and the seat crossbeam assembly 2 located above it will collapse together, thereby absorbing part of the impact energy again. That is, the crush component 4 and the seat crossbeam assembly 2 located above it form the second energy absorption structure for the vehicle to absorb impact energy; finally, the remaining impact energy will be transmitted to the floor longitudinal beam 301 having the second hollow structure B. Similarly, the floor longitudinal beam 301 and the seat crossbeam assembly 2 located above it will also collapse to absorb the remaining impact energy. That is, the floor longitudinal beam 301 and the seat crossbeam assembly 2 located above it form the third energy absorption structure for the vehicle to finally absorb impact energy; at this time, most or even all of the impact energy generated by the collision of the vehicle will be absorbed by the three energy absorption structures, thereby reducing or even avoiding the damage of the battery pack 5 due to the impact force, and thus greatly improving the safety performance of the electric vehicle.

[0025] In some embodiments of the present disclosure, the seat crossbeam assembly 2 is formed with a first crush portion 201a corresponding to the crush component 4 and a second crush portion 201b corresponding to the floor longitudinal beam 301. That is, the first crush portion 201a is located above the crush component 4, and the second crush portion 201b is located above the floor longitudinal beam 301. Since the crush portion is easily collapsible, when the impact energy is transmitted to the crush component 4 or the floor longitudinal beam 301, the first crush portion 201a or the second crush portion 201b can be crushed together with the crush component 4 or the floor longitudinal beam 301, so that the body structure can maximize the absorption of the transmitted impact energy, reduce the subsequent transmitted impact energy, and thus reduce the impact force received by the battery pack 5 or avoid the battery pack 5 from being impacted.

[0026] To ensure that the first crushing portion 201a and the second crushing portion 201b can collapse after receiving impact energy, the seat crossbeam assembly 2 of the present disclosure includes a seat crossbeam body 201; the first crushing portion 201a and the second crushing portion 201b can be configured as convex structures and / or concave structures formed on the seat crossbeam body 201.

[0027] In some embodiments, as Figure 2 shown, the crushing assembly 4 includes a crushing member 41 and a mounting bracket 42 for supporting the crushing member 41; both ends of the mounting bracket 42 can be respectively connected to the outer sill beam 11 and the floor longitudinal beam 301 by means of, for example, bolt connection. Subsequently, the crushing member 41 is connected to the mounting bracket 42. At this time, there may be a certain gap between the crushing member 41 and the outer sill beam 11 and the floor longitudinal beam 301. When the vehicle is impacted, at least a part of the crushing member 41 can be attached to the outer sill beam 11 and the floor longitudinal beam 301 when the seat crossbeam assembly 2 collapses. In this way, on the one hand, the crushing member 41 can increase the strength between the outer sill beam 11 and the floor longitudinal beam 301 to a certain extent. On the other hand, it can also absorb the impact energy generated by the collision during collapse. Among them, in order to ensure that the crushing member 41 can be attached to the outer sill beam 11 and the floor longitudinal beam 301, the crushing member 41 of the present disclosure includes a first fitting portion 4101 facing the outer sill beam 11 and a second fitting portion 4102 facing the floor longitudinal beam 301. After the sill beam assembly 1 collapses, it will move towards the side close to the crushing member 41, so that the first fitting portion 4101 of the crushing member 41 abuts against the outer sill beam 11, and under the extrusion of the outer sill beam 11, the second fitting portion 4102 abuts against the floor longitudinal beam 301, thereby causing the crushing member 41 to collapse and absorb energy, reducing part of the impact energy. In addition, since the impact energy will diverge in all directions when transmitted between structures, in order to prevent the crushing member 41 from shifting upward or downward after receiving the impact energy from various directions transmitted by the outer sill beam 11, resulting in the situation where the crushing member 41 cannot abut against the floor longitudinal beam 301, the length of the cross-section of the first fitting portion 4101 of the crushing member 41 in the Z direction can be less than the length of the cross-section of the second fitting portion 4102 in the Z direction, so that the cross-section of the crushing member 41 is in the shape of a laterally placed trapezoid structure, which can increase the contact area between the second fitting portion 4102 and the floor longitudinal beam 301 as much as possible to ensure that the second fitting portion 4102 can abut against the floor longitudinal beam 301; of course, the crushing member 41 of the present disclosure can also have a third hollow structure C that facilitates its collapse, and a plurality of reinforcing beams can be arranged at intervals in the third hollow structure C to ensure the strength of the crushing member 41 to a certain extent.

[0028] It should be noted that the crushing member 41 of the present disclosure can be configured as an aluminum profile member with light self-weight, good corrosion resistance and strength.

[0029] In some embodiments of the present disclosure, the sill beam assembly 1 further includes a sill inner beam 12 disposed within the sill outer beam 11 and used to strengthen the strength of the sill beam assembly 1; the sill outer beam 11 includes a first beam body 1101 on a side away from the seat crossbeam assembly 2 and a second beam body 1102 on a side close to the seat crossbeam assembly 2 and connected to the first beam body 1101, and both the first beam body 1101 and the second beam body 1102 have bending portions 1103; the sill inner beam 12 includes a first sill inner beam 1201 with at least a partial area disposed in the bending portion 1103 of the first beam body 1101; and / or a second sill inner beam 1202 with at least a partial area connected to the inner wall of the second beam body 1102 and having a protruding portion 1203 protruding toward the first beam body 1101. After the sill outer beam 11 is stressed, the first sill inner beam 1201 disposed in the bending portion 1103 of the first beam body 1101 can jointly resist the impact energy with the first beam body 1101. After the first beam body 1101 and the first sill inner beam 1201 collapse, the second beam body 1102 and the protruding portion 1203 of the second sill inner beam 1202 located on the second beam body 1102 will jointly resist the impact energy and absorb the impact energy after collapse. The sill beam assembly 1 arranged in this way can improve its own strength while being completely deformed and energy-absorbing, thereby absorbing the impact energy to the greatest extent.

[0030] In some embodiments, the floor longitudinal beam 301 is configured as a U-shaped beam with a U-shaped cavity 302 in cross-section, and the U-shaped cavity forms the second hollow structure B. The U-shaped beam structure can not only enable the floor longitudinal beam 301 to collapse and absorb energy together with the second crushing portion 201b, but also facilitate the connection of the crushing member 41 or the battery pack 5 to it through a connecting member. In addition, in order to ensure the structure of the U-shaped beam, a reinforcing beam structure can be arranged inside the U-shaped cavity 302. The reinforcing beam structure can be configured as a U-shaped reinforcing beam with the same structure as the floor longitudinal beam 301. The U-shaped reinforcing beam can be arranged at the bottom of the floor longitudinal beam 301, and the opposite outer sidewalls of the U-shaped reinforcing beam can respectively be attached to the opposite inner sidewalls of the floor longitudinal beam 301 to strengthen the strength of the floor longitudinal beam 301 in the direction away from the crushing member 41.

[0031] In the second aspect of the present disclosure, as Figure 3 shown, a vehicle body frame is provided, which includes a battery pack 5 and the above-mentioned anti-collision structure. The battery pack 5 is disposed adjacent to the floor longitudinal beam 301, and the battery pack is connected to the floor longitudinal beam 301 through a battery pack longitudinal beam 501; there is an anti-collision gap 6 between the battery pack 5 and the floor longitudinal beam 301 for preventing the battery pack 5 from colliding with the floor longitudinal beam 301 after the floor longitudinal beam 301 collapses. In this way, even if the vehicle body structures such as the floor longitudinal beam 301 move toward the battery pack 5 side under the action of an impact force and generate an embedding amount, the embedded part will first enter the anti-collision gap 6, thereby reducing the possibility of the embedded vehicle body structure directly contacting and colliding with the battery pack 5, and further realizing the protection of the battery pack 5.

[0032] In some embodiments, the floor assembly 3 further includes a floor panel 303 for connecting the floor longitudinal beam 301 to the outer sill beam 11; on one side of the opposite side walls of the floor longitudinal beam 301 close to the floor panel 303, there are connecting portions 304 that are folded outward to the outside of the floor longitudinal beam 301, and the floor longitudinal beam is connected to the floor panel 303 through the connecting portions 304; the projection of the anti-collision gap 6 on the floor panel 303 can cover the projection of the connecting portion 304 on the floor panel 303 on the side close to the battery pack 5. In this way, enough anti-collision gap 6 can be left between the battery pack 5 and the floor longitudinal beam 301 to ensure that the embedded body structure cannot contact the battery pack.

[0033] In a third aspect of the present disclosure, a vehicle is provided. The vehicle includes the above-described body frame. Therefore, the vehicle also has all the advantages of the above body frame, which will not be elaborated here. It can be understood that the vehicle can be an electric vehicle or a hybrid vehicle.

[0034] In summary, for the anti-collision structure, body frame and vehicle of the present disclosure, when the side of the vehicle is impacted, the impact energy generated by the impact force will first pass through the sill beam assembly 1 jointly formed by the outer sill beam 11 and the inner sill beam 12. After the sill beam assembly 1 receives the impact energy, it will collapse, thereby absorbing part of the impact energy and transmitting the remaining impact energy to the first crushing portion 201a of the seat crossbeam assembly 2 and the crushing member 41. The crushing member 41 and the first crushing portion 201a will collapse simultaneously to absorb part of the energy, and the last some impact energy will be transmitted to the floor longitudinal beam 301 and the second crushing portion 201b, and the second crushing portion 201b and the floor longitudinal beam 301 will collapse to absorb energy. At this time, the impact energy is already smaller or completely absorbed, thereby reducing or even avoiding the impact on the battery pack 5 caused by the impact energy, thus ensuring the safety performance of the vehicle. In addition, even if the last remaining impact energy is large and causes some body structures such as the floor longitudinal beam to embed towards the battery pack 5, the embedded part cannot directly contact the battery pack 5 due to the existence of the anti-collision gap 6, further ensuring the safety of the battery pack 5 and the vehicle.

[0035] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0036] In addition, it should be noted that, in the various specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0037] In addition, any combination can be made among various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. An anti-collision structure, characterized in that, Comprising: A sill beam assembly, including an outer sill beam having a first hollow structure; A seat crossbeam assembly, crushably connected to the outer sill beam and extending towards the interior of the vehicle in a direction away from the outer sill beam; A floor assembly, including a floor longitudinal beam having a second hollow structure; And A crush assembly, disposed between the outer sill beam and the floor longitudinal beam.

2. The anti-collision structure according to claim 1, characterized in that, The seat crossbeam assembly is formed with a first crush portion corresponding to the crush assembly and a second crush portion corresponding to the floor longitudinal beam.

3. The anti-collision structure according to claim 2, characterized in that, The seat crossbeam assembly includes a seat crossbeam body; the first crush portion and the second crush portion are configured to be convex structures and / or concave structures formed on the seat crossbeam body.

4. The anti-collision structure according to claim 1, characterized in that, The crush assembly includes a crush member and a mounting bracket for supporting the crush member; both ends of the mounting bracket are respectively connected to the outer sill beam and the floor longitudinal beam; At least a partial region of the crush member can be attached to the outer sill beam and the floor longitudinal beam when the seat crossbeam assembly undergoes a crush.

5. The anti-collision structure according to claim 4, characterized in that, The crush member includes a first attachment portion facing the outer sill beam and a second attachment portion facing the floor longitudinal beam, and the length of the cross-section of the first attachment portion in the Z direction is less than the length of the cross-section of the second attachment portion in the Z direction; And / or The crush member has a third hollow structure.

6. The anti-collision structure according to claim 1, characterized in that, The sill beam assembly further includes an inner sill beam disposed within the outer sill beam and for strengthening the strength of the sill beam assembly; The outer sill beam includes a first beam body on a side away from the seat crossbeam assembly and a second beam body on a side close to the seat crossbeam assembly and connected to the first beam body, and both the first beam body and the second beam body have bending portions; The inner sill beam includes a first inner sill beam with at least a partial region disposed at the bending portion of the first beam body; and / or A second inner sill beam with at least a partial region connected to the inner wall of the second beam body and having a convex portion protruding towards the first beam body side.

7. The anti-collision structure according to claim 1, wherein The floor longitudinal beam is configured as a U-shaped beam with a U-shaped cavity in cross-section, and the U-shaped cavity forms the second hollow structure.

8. A vehicle body frame, characterized in that, Including a battery pack and the anti-collision structure according to any one of claims 1-7, the battery pack is disposed adjacent to the floor longitudinal beam and the battery pack is connected to the floor longitudinal beam through a battery pack longitudinal beam; There is an anti-collision gap between the battery pack and the floor longitudinal beam for preventing the battery pack from colliding with the floor longitudinal beam after the floor longitudinal beam undergoes a crush.

9. The vehicle body frame according to claim 8, characterized in that, The floor assembly further includes a floor panel for connecting the floor longitudinal beam to the outer sill beam; On the side of the opposite sidewalls of the floor longitudinal beam close to the floor panel, there are connecting portions folded towards the outside of the floor longitudinal beam, and the floor longitudinal beam is connected to the floor panel through the connecting portions; The projection of the anti-collision gap on the floor panel can cover the projection of the connecting portion on the side close to the battery pack on the floor panel.

10. A vehicle, characterized in that, Including the vehicle body frame according to claim 8 or 9.

Images