CN220924293U

CN220924293U - Lower vehicle body structure and vehicle

Info

Publication number: CN220924293U
Application number: CN202322644133.XU
Authority: CN
Inventors: 李顺; 贺志杰; 孙计晨; 刘立伟; 姜月; 张阳; 高鹏; 张逸祥
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2023-09-27
Filing date: 2023-09-27
Publication date: 2024-05-10
Anticipated expiration: 2033-09-27

Abstract

The utility model provides a lower vehicle body structure and a vehicle, wherein the lower vehicle body structure comprises a side wall outer plate assembly, a threshold beam connected with the side wall outer plate assembly and a battery pack positioned at the inner side of the threshold beam; a threshold cavity is formed between the threshold beam and the side wall outer plate assembly, and a threshold reinforcement beam is arranged in the threshold cavity; the battery package lateral part has the linking arm that extends to the threshold roof beam below, and the linking arm links together with threshold roof beam and threshold stiffening beam. According to the lower vehicle body structure, the threshold reinforcement beam is arranged, and the battery pack is connected with the threshold reinforcement beam and the threshold beam, so that the rigidity of the vehicle body and the connection rigidity of the battery pack and the vehicle body can be improved, and the battery pack is prevented from being deformed under stress.

Description

Lower vehicle body structure and vehicle

Technical Field

The utility model relates to the technical field of vehicle parts, in particular to a lower vehicle body structure. Meanwhile, the utility model also relates to a vehicle with the lower vehicle body structure.

Background

With the development of the automobile industry, the automobile collision safety performance is widely concerned. However, the existing vehicle has the defects of weak connection rigidity of the battery pack and the vehicle body and insufficient rigidity of the whole vehicle, so that the problems that the battery pack is easily stressed, the living space is not easily met and the like easily occur under the condition that the whole vehicle is subjected to side collision, and the safety performance of the vehicle is affected. In the process of vehicle body design, although the protection of the battery pack is generally improved by increasing the thickness of the metal plate of the vehicle body at the threshold and reinforcing the battery pack framework, the whole weight of the vehicle body can be increased in the mode, the lightweight design of the whole vehicle is not facilitated, the energy density of the battery pack is reduced, and the working performance of the whole vehicle is influenced.

Disclosure of utility model

In view of the above, the present utility model is directed to a lower vehicle body structure that facilitates the enhancement of the rigidity of the vehicle body and the connection rigidity of the vehicle body and the battery pack.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

A lower vehicle body structure comprising a side wall outer plate assembly, a threshold beam connected with the side wall outer plate assembly, and a battery pack positioned on the inner side of the threshold beam;

A threshold cavity is formed between the threshold beam and the side wall outer plate assembly, and a threshold reinforcing beam is arranged in the threshold cavity;

The battery pack side has a connecting arm extending to below the threshold beam, the connecting arm being connected with the threshold beam and the threshold reinforcement beam.

Further, the connecting components of the threshold reinforcement beam, which are arranged along the circumferential direction of the connecting components, are arranged in the inner cavity of the threshold.

Further, the connecting assembly comprises an upper connecting piece positioned at the top of the threshold reinforcement beam and a lower connecting piece positioned at the bottom of the threshold reinforcement beam;

the upper connecting piece and the lower connecting piece are connected with the side wall outer plate assembly and/or the threshold beam.

Further, the lower connecting piece and the upper connecting piece are correspondingly arranged in the up-down direction of the whole vehicle.

Further, the connecting assembly comprises an inner connecting piece and an outer connecting piece which are positioned at the left side and the right side of the threshold reinforcement beam;

The inner connecting piece is connected with the threshold beam, and the outer connecting piece is connected with the surrounding outer plate assembly.

Further, the inner and outer connecting members are staggered in the front-rear direction of the entire vehicle.

Further, the outer connecting piece comprises a switching support arranged on the threshold reinforcement beam, and the switching support is connected with the side wall outer plate assembly; and/or the number of the groups of groups,

The inner connecting piece comprises a rivet nut arranged in the threshold reinforcing beam.

Further, the projection of the threshold reinforcement beam and the battery pack in the left-right direction of the whole vehicle is at least partially overlapped.

Further, the threshold reinforcement beam is made of extruded aluminum profiles; and/or the number of the groups of groups,

And a nut sleeve is arranged in the threshold reinforcement beam, and the connecting arm is connected in the nut sleeve through a bolt.

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

According to the lower vehicle body structure, the threshold reinforcing beam is arranged in the inner cavity of the threshold, and the battery pack is connected with the threshold reinforcing beam and the threshold beam, so that the rigidity of the vehicle body and the connection rigidity of the vehicle body and the battery pack are improved, and the battery pack is prevented from being deformed under stress.

In addition, through being provided with connecting piece and lower connecting piece, be convenient for promote the joint strength between threshold stiffening beam and side wall planking and the threshold roof beam, and do benefit to the power transmission performance of reinforcing automobile body when bumping. And through making last connecting piece and lower connecting piece correspond the setting in the upper and lower direction of whole car, do benefit to the joint strength who promotes threshold stiffening beam and side wall planking assembly and threshold roof beam, guarantee the connection reliability of threshold stiffening beam and side wall planking assembly and threshold roof beam.

In addition, the connecting assembly comprises an inner connecting piece and an outer connecting piece, so that the connecting strength between the threshold reinforcing beam and the threshold beam and the side wall outer plate assembly is further improved, and the force transmission performance of the vehicle body during collision is guaranteed. And the inner connecting pieces and the outer connecting pieces are staggered in the front-rear direction of the whole car, so that the assembly of the threshold beam is facilitated.

Secondly, make outer connecting piece including locating the switching support on the threshold roof beam to and make interior connecting piece including locating the interior rivet nut of pulling of threshold stiffening beam, can make the structure of outer connecting piece and interior connecting piece comparatively simple, conveniently arrange, easily operation.

Moreover, through making the projection of threshold stiffening beam and battery package in whole car left and right directions overlap at least partially, can make the threshold stiffening beam cover battery package lateral wall at least partially to play better guard action to the battery package.

Another object of the present utility model is to propose a vehicle comprising a lower body structure as described above.

According to the vehicle, the lower vehicle body structure is arranged, so that the rigidity of the vehicle body and the connection rigidity of the vehicle body and the battery pack are improved, and the safety performance of the vehicle is guaranteed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic structural view of a lower door body structure according to an embodiment of the present utility model;

FIG. 2 is a bottom view of a lower door structure according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;

FIG. 4 is a front view of a portion of a lower door structure according to an embodiment of the present utility model;

FIG. 5 is a cross-sectional view taken along the direction B-B in FIG. 4;

FIG. 6 is a cross-sectional view taken along the direction C-C in FIG. 4;

Fig. 7 is a schematic structural view of a side body outer panel assembly and a threshold reinforcement beam according to an embodiment of the present utility model.

Reference numerals illustrate:

1. A side wall outer plate assembly; 101. a side wall outer plate; 102. a side wall reinforcing plate; 2. a threshold beam; 3. a threshold cavity; 4. a threshold reinforcement beam; 5. a battery pack; 501. a connecting arm; 6. an upper connecting piece; 7. a lower connecting piece; 8. a transfer bracket; 9. an adapter bolt; 10. a via hole; 11. pulling and riveting a nut; 12. a connecting bolt; 13. a nut sleeve; 14. a long bolt; 15. and (5) an adapter nut.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, the terms "upper, lower, left, right, front, and rear" used in the present embodiment are defined with reference to the up-down direction, the left-right direction, and the front-rear direction of the automobile. The vertical direction of the automobile, namely the height direction of the automobile, the front-back direction of the automobile, namely the length direction of the automobile, and the left-right direction of the automobile, namely the width direction of the automobile.

Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

The present embodiment relates to a lower vehicle body structure that includes, as shown in fig. 1 to 7, a side body outer panel assembly 1, a rocker beam 2 connected to the side body outer panel assembly 1, and a battery pack 5 located inside the rocker beam 2, as a whole.

Wherein, be formed with threshold inner chamber 3 between threshold roof beam 2 and the side wall planking assembly 1, be equipped with threshold stiffening beam 4 in the threshold inner chamber 3, battery package 5 lateral part has the linking arm 501 that extends to threshold roof beam 2 below, and linking arm 501 links together with threshold roof beam 2 and threshold stiffening beam 4. It can be understood that the battery pack 5 is connected with the threshold reinforcement beam 4 and the threshold beam 2 by arranging the threshold reinforcement beam 4 in the threshold cavity 3, so that the rigidity of the vehicle body and the connection rigidity of the vehicle body and the battery pack 5 are improved, and the stress deformation of the battery pack 5 is prevented.

Based on the above overall description, as a preferred embodiment, in the present embodiment, the passing connection assembly of the rocker reinforcement beam 4, which is arranged in the circumferential direction thereof, is provided in the rocker inner cavity 3. By being provided with the coupling assembling, be convenient for threshold stiffening beam 4 and be connected with threshold beam 2 and side wall planking 101.

As shown in connection with fig. 4 and 5, it is preferable that in the present embodiment, the connection assembly includes an upper connection member 6 located at the top of the threshold reinforcement beam 4, and a lower connection member 7 located at the bottom of the threshold reinforcement beam 4. The upper connecting piece 6 and the lower connecting piece 7 are connected with the side wall outer plate assembly 1 and the threshold beam 2. In this way, the connecting strength between the threshold reinforcement beam 4 and the side wall outer plate 101 and the threshold beam 2 is convenient to improve, and the force transmission performance of the vehicle body in collision is facilitated to be enhanced.

In particular, as shown in fig. 5, the bottom of the upper connecting member 6 is connected to the rocker reinforcement beam 4, the top of the upper connecting member 6 extends into the gap between the top of the side outer panel assembly 1 and the top of the rocker beam 2, and the left and right sides are connected to the side outer panel assembly 1 and the rocker beam 2, respectively. The top of the lower connecting piece 7 is connected with the threshold stiffening beam 4, the bottom of the lower connecting piece 7 stretches into a gap between the bottom of the side wall outer plate assembly 1 and the bottom of the threshold beam 2, and the left side and the right side of the lower connecting piece 7 are respectively connected with the side wall outer plate assembly 1 and the threshold beam 2.

Also, as shown in fig. 5, the side body outer panel assembly 1 includes a side body outer panel 101, and a side body reinforcing plate 102 provided inside the side body outer panel 101, at the position of the top, the side body outer panel 101, the side body reinforcing plate 102, the upper connecting member 6 and the rocker 2 are connected in sequence, at the position of the bottom, the side body reinforcing plate 102, the lower connecting member 7 and the rocker 2 are connected in sequence, and the connection between the above-mentioned respective parts can be made by a connection means commonly used in the prior art, such as spot welding or the like.

In addition, the upper connecting piece 6 and the lower connecting piece 7 can be made of HC420/780 (phase transition induced plasticity high strength cold rolled steel) materials, and the upper connecting piece 6 and the lower connecting piece 7 can be connected with the threshold reinforcement beam 4 through SPR (self-piercing riveting) or FDS (rotational tapping riveting) riveting technology. In the present embodiment, the upper and lower connectors 6 and 7 are connected to the side body outer panel assembly 1 and the rocker 2, and the upper and lower connectors 6 and 7 may be connected to the side body outer panel assembly 1 or the rocker 2, respectively, as a preferred embodiment.

As a preferable arrangement, as shown in fig. 7, in the present embodiment, the lower link 7 and the upper link 6 are provided correspondingly in the up-down direction of the whole vehicle. Therefore, the connecting strength of the threshold reinforcement beam 4 and the side wall outer plate assembly 1 and the threshold beam 2 is improved, and the connecting reliability of the threshold reinforcement beam 4 and the side wall outer plate assembly 1 and the threshold beam 2 is guaranteed.

Further, as shown in fig. 5 and 6, in the present embodiment, the connection assembly includes inner and outer connection members located at both left and right sides of the rocker reinforcement beam 4. The inner connecting piece is connected with the threshold beam 2, and the outer connecting piece is connected with the outer surrounding plate assembly. It can be understood that by being provided with the inner connecting piece and the outer connecting piece, the connection strength between the threshold stiffening beam 4 and the threshold beam 2 and the side wall outer plate assembly 1 is further improved, and the force transmission performance of the vehicle body during collision is ensured.

Also, as a preferable arrangement, in the present embodiment, the inner connecting members and the outer connecting members are staggered in the front-rear direction of the whole vehicle to facilitate the assembly of the rocker reinforcement beam 4. As also shown in fig. 5 and 6, in the present embodiment, the outer connector includes an adapter bracket 8 provided on the threshold reinforcement beam 4, the adapter bracket 8 is connected to the side outer panel assembly 1, and the inner connector includes a rivet nut 11 provided in the threshold reinforcement beam 4. So set up, connection structure is simple, conveniently arranges, easily operation.

Of course, the inclusion of the adapter bracket 8 for the outer connector and the inclusion of the rivet nut 11 for the inner connector is merely a preferred embodiment, and alternatively, only the adapter bracket 8 for the outer connector or only the rivet nut 11 for the inner connector may be included. The material of the adapting bracket 8 may be selected from the materials of the upper connector 6 and the lower connector 7.

In addition, when the sill reinforcement 4 of the present embodiment is assembled, the outer connecting member may be welded to the side outer panel assembly 1, the upper connecting member 6 and the lower connecting member 7 may be connected to the sill reinforcement 4, and then the sill reinforcement 4 may be connected to the side outer panel assembly 1 through the upper connecting member 6 and the lower connecting member 7.

And be equipped with transfer bolt 9 on transfer support 8, be equipped with via hole 10 on threshold stiffening beam 4, after being in the same place threshold stiffening beam 4 and side wall planking assembly 1, accessible via hole 10 is screwed up transfer nut 15 to transfer bolt 9 on, and realizes the connection of threshold stiffening beam 4 and transfer support 8. And then the side wall outer plate assembly 1 provided with the threshold reinforcement beam 4 is buckled with the threshold beam 2, the upper connecting piece 6 and the lower connecting piece 7 are connected with the threshold beam 2, and the connecting bolts 12 penetrate through the threshold beam 2 and are screwed on the rivet nuts 11.

As a preferred embodiment, as shown in fig. 1 and 3, the projection of the threshold reinforcement beam 4 and the battery pack 5 in the left-right direction of the whole vehicle overlap, so that the threshold reinforcement beam 4 can cover the side wall of the battery pack 5, thereby having a good protection effect on the battery pack 5. Of course, in the concrete implementation, only the projection portion of the rocker reinforcement beam 4 and the battery pack 5 in the vehicle left-right direction may be overlapped.

Further, referring to fig. 2 and 3, in the present embodiment, the rocker reinforcement 4 is made of an extruded aluminum profile, and a nut bushing 13 is provided in the rocker reinforcement 4, and the connection arm 501 is connected in the nut bushing 13 by a bolt.

As shown in fig. 3, the sill beam 2 is supported by an extruded aluminum profile, and a plurality of cavities are formed in the sill beam, so that the sill beam has good structural strength, good protection effect on a battery and is beneficial to improving the rigidity of a vehicle body. And through being equipped with nut sleeve 13 in threshold stiffening beam 4, long bolt 14 passes behind linking arm 501 and is connected with nut sleeve 13, connection structure is simple, the implementation of being convenient for.

Of course, in this embodiment, even if the sill beam 2 is made of an extruded aluminum profile, the provision of the nut bushing 13 in the sill reinforcement beam 4 is only a preferred embodiment, and it is also possible to select to make only the sill beam 2 of an extruded aluminum profile, or to provide only the nut bushing 13 in the sill reinforcement beam 4.

The lower vehicle body structure of this embodiment is through being equipped with threshold stiffening beam 4 to make battery package 5's linking arm 501 all be connected with threshold beam 2 and threshold stiffening beam 4, do benefit to and promote automobile body and battery package 5 rigidity, prevent that battery package 5 from atress deformation. And, through being provided with connecting piece 6, lower connecting piece 7, interior connecting piece and outer connecting piece, do benefit to the joint strength who guarantees threshold stiffening beam 4 and threshold beam 2 and side wall planking assembly 1, and can strengthen the power transmission efficiency of lower automobile body when the collision.

Example two

The present embodiment relates to a vehicle including the lower body structure of the first embodiment.

The vehicle of this embodiment, through being equipped with the lower body structure of embodiment one, does benefit to the rigidity of promotion automobile body and the rigidity of being connected of automobile body and battery package 5, guarantees the security performance of vehicle.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A lower body structure, characterized in that:

The solar cell comprises a side wall outer plate assembly (1), a threshold beam (2) connected with the side wall outer plate assembly (1), and a cell pack (5) positioned on the inner side of the threshold beam (2);

A threshold cavity (3) is formed between the threshold beam (2) and the side wall outer plate assembly (1), and a threshold reinforcement beam (4) is arranged in the threshold cavity (3);

The battery pack (5) is provided with a connecting arm (501) extending to the lower part of the threshold beam (2), and the connecting arm (501) is connected with the threshold beam (2) and the threshold reinforcement beam (4).

2. The lower body structure according to claim 1, characterized in that:

The threshold stiffening beam (4) is arranged in the threshold inner cavity (3) through a connecting component which is arranged along the circumferential direction of the threshold stiffening beam.

3. The lower body structure according to claim 2, characterized in that:

The connecting assembly comprises an upper connecting piece (6) positioned at the top of the threshold reinforcement beam (4) and a lower connecting piece (7) positioned at the bottom of the threshold reinforcement beam (4);

The upper connecting piece (6) and the lower connecting piece (7) are connected with the side wall outer plate assembly (1) and/or the threshold beam (2).

4. A lower body structure according to claim 3, wherein:

The lower connecting piece (7) and the upper connecting piece (6) are correspondingly arranged in the up-down direction of the whole vehicle.

5. The lower body structure according to claim 2, characterized in that:

The connecting assembly comprises an inner connecting piece and an outer connecting piece which are positioned at the left side and the right side of the threshold reinforcement beam (4);

The inner connecting piece is connected with the threshold beam (2), and the outer connecting piece is connected with the side wall outer plate assembly (1).

6. The lower body structure according to claim 5, characterized in that:

the inner connecting pieces and the outer connecting pieces are staggered in the front-rear direction of the whole vehicle.

7. The lower body structure according to claim 6, characterized in that:

The outer connecting piece comprises a switching support (8) arranged on the threshold reinforcement beam (4), and the switching support (8) is connected with the side wall outer plate assembly (1); and/or the number of the groups of groups,

The inner connecting piece comprises a rivet nut (11) arranged in the threshold strengthening beam (4).

8. The lower body structure according to claim 1, characterized in that:

The projection of the threshold reinforcement beam (4) and the battery pack (5) in the left-right direction of the whole vehicle is at least partially overlapped.

9. The lower body structure according to any one of claims 1 to 8, characterized in that:

the threshold reinforcement beam (4) is made of extruded aluminum profiles; and/or the number of the groups of groups,

A nut sleeve (13) is arranged in the threshold reinforcement beam (4), and the connecting arm (501) is connected in the nut sleeve (13) through a bolt.

10. A vehicle, characterized in that:

Comprising a lower vehicle body structure according to any one of claims 1 to 9.