CN118514763A - Vehicle body structure and vehicle having the same - Google Patents

Abstract

The present invention provides a vehicle body structure and a vehicle having the same. The vehicle body structure of the present invention includes sill beams arranged on both sides, a front floor panel located between the sill beams on both sides, an annular frame connected to the front floor panel, and a battery pack connected between the sill beams on both sides; the annular frame can form a force transmission channel along the left and right direction of the whole vehicle between the sill beams on both sides, and the annular frame includes front floor longitudinal beams arranged on the left and right sides, a front floor front cross beam connected between the front ends of the front floor longitudinal beams on both sides, and a front floor rear cross beam connected between the rear ends of the front floor longitudinal beams on both sides; the front floor front cross beam, the front floor rear cross beam and the front floor longitudinal beams on both sides are all surrounded by a cavity with the front floor panel, and an annular cavity structure is formed between the annular frame and the front floor panel. The present invention can increase the structural strength of the vehicle body, can increase the collision force transmission effect when the vehicle is side-impacted, and is conducive to improving the side-impact safety of the whole vehicle.

Description

Vehicle body structure and vehicle with same

Technical Field

The invention relates to the technical field of vehicles, in particular to a vehicle body structure. The invention also relates to a vehicle with the vehicle body structure.

Background

With the increasing permeability of new energy vehicles, people are increasingly favouring new energy vehicles when purchasing vehicles, and with the increasing consumption level of people, the requirements of people on vehicle quality, particularly vehicle safety quality, are also increasing.

Currently, in the body of a new energy vehicle, a battery pack is generally disposed between the left and right side sill beams, a front floor panel is generally disposed between the side sill beams, and most vehicle models also provide a front floor cross member in the body to increase the structural strength of the body and the safety of the battery pack. However, the existing vehicle body structure still has weaker capability of vehicle side collision, weaker collision force transmission capability when side collision occurs, larger invasion amount to a driving cabin and a battery pack, and easy damage to the driving cabin and the battery pack, thereby being unfavorable for improving the side collision safety of the whole vehicle.

Disclosure of Invention

In view of this, the present invention aims to propose a vehicle body structure to facilitate the collision safety of the whole vehicle.

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

a vehicle body structure includes threshold beams provided separately on both sides, a front floor panel between the threshold beams on both sides, a ring-shaped frame connected to the front floor panel, and a battery pack connected between the threshold beams on both sides;

The annular frame can form a force transmission channel along the left-right direction of the whole vehicle between the threshold beams at two sides, and comprises front floor longitudinal beams which are respectively arranged at the left side and the right side, a front floor front cross beam which is connected between the front ends of the front floor longitudinal beams at two sides, and a front floor rear cross beam which is connected between the rear ends of the front floor longitudinal beams at two sides;

and the front floor front cross beam, the front floor rear cross beam, the front floor longitudinal beams on two sides and the front floor panel are formed into a cavity in an enclosing mode, and a ring cavity structure is formed between the ring-shaped frame and the front floor panel.

Further, the front floor longitudinal beams on each side are positioned on the inner sides of the threshold beams on the same side, and a force transmission support piece is connected between the front floor longitudinal beams and the threshold beams on the same side;

the ring-shaped frame and the force transmission supporting pieces on each side are all positioned below the front floor panel, and the battery pack is positioned below the ring-shaped frame.

Further, a gap s is formed between the threshold beam on each side and the front floor longitudinal beam on the same side, and one end, connected with the front floor longitudinal beam on the same side, of the force transmission supporting piece on each side is positioned in the gap s;

and a cavity is formed between each side of the force transmission support piece and the front floor panel, and between the threshold beam and the front floor longitudinal beam on the same side.

Further, the front floor panel is provided with a protruding portion protruding upwards along the up-down direction of the whole vehicle, the annular frame is located in the protruding portion, and the bottom end face of the annular frame is flush with the bottom end face of the front floor panel.

Further, along the left-right direction of the whole vehicle, the bottoms of the force transmission supporting pieces at each side are arranged in an upward tilting manner along the direction pointing to the front floor longitudinal beam at the same side; and/or the number of the groups of groups,

And one end of each side of the force transmission support piece, which is close to the front floor longitudinal beam on the same side, is provided with an avoidance groove for avoiding the battery pack.

Further, the two side thresholds Liang Kaojin are respectively provided with an inclined plane which is arranged in an outward-inclined manner on one side of the battery pack;

and an energy absorption space is formed between each side of the inclined plane and the battery pack, and the part of each side of the force transmission support piece positioned in the energy absorption space is connected to the inclined plane on the same side.

Furthermore, the force transmission supporting pieces on each side are a plurality of force transmission supporting pieces which are arranged at intervals along the front-back direction of the whole vehicle, and the threshold beams on each side are provided with energy absorption brackets;

The energy-absorbing brackets and the force-transmitting supporting pieces on the threshold beams are respectively arranged on two opposite sides of the threshold beams, and the energy-absorbing brackets on each side are a plurality of the energy-absorbing brackets which are arranged in one-to-one correspondence with at least part of the force-transmitting supporting pieces on the same side.

Further, the left side and the right side of the front floor panel are respectively provided with a lap joint edge, each side of the lap joint edge is connected with the threshold beam on the same side, and each side of the lap joint edge comprises a first lap joint part and a second lap joint part;

The first lap joint part is lapped on the threshold beam along the left-right direction of the whole car, and the second lap joint part is lapped on the threshold beam along the up-down direction of the whole car.

Furthermore, the threshold beams at both sides are made of hot forming steel; and/or the number of the groups of groups,

The left and right sides of battery package is equipped with the installation arm respectively, each side the installation arm is connected with the homonymy on the threshold roof beam, and both sides all be equipped with on the installation arm easily the weakening structure that the installation arm collapsed.

Compared with the prior art, the invention has the following advantages:

According to the vehicle body structure, the annular frame formed by the front floor transverse beam and the longitudinal beam is arranged, the annular frame and the front floor panel form the annular cavity structure, the characteristics of high strength of the annular structure and the cavity structure can be utilized, the strength of the vehicle body structure can be increased, the force transmission effect of a force transmission channel formed by the annular frame can be increased, the transverse transmission dispersion of side collision force is facilitated, and the safety of side collision of the whole vehicle is facilitated.

In addition, the annular frame is connected with the threshold beams at the two sides through the force transmission supporting piece, and the force transmission supporting piece can be utilized to connect, so that a force transmission channel is formed between the threshold beams at the two sides by the annular frame, and the annular frame and the force transmission supporting piece are positioned below the front floor panel, so that the annular frame and the force transmission supporting piece can be conveniently arranged in a vehicle body. The force transmission support member is arranged on the front floor panel, the threshold beam is arranged on the front floor longitudinal beam, and the force transmission support member is arranged on the front floor longitudinal beam. Through set up the bellying on preceding floor panel for ring type frame is arranged in the bellying, can be convenient for the arrangement of battery package, and the bottom face of ring type frame and preceding floor panel bottom face parallel and level, is favorable to the arrangement of battery package more.

The bottom of the force transmission support piece is arranged in an upward tilting mode, collision force can be guided to be transmitted to the annular frame along the force transmission support piece, and collision damage to the battery pack can be reduced. The avoidance groove for avoiding the battery pack is formed in the force transmission support piece, so that the force transmission support piece can be prevented from occupying the arrangement space of the battery pack, the arrangement of the battery pack is facilitated, the crumple energy absorption capacity of the force transmission support piece can be increased, and the collision safety is improved.

And secondly, an outer inclined plane is arranged on the threshold beam, so that an energy absorption space is formed between the inclined plane and the battery pack, the part of the force transmission support piece positioned in the energy absorption space is connected to the inclined plane of the threshold beam, the formed energy absorption space can be utilized as the threshold beam, more crumple energy absorption spaces, particularly, more crumple energy absorption spaces are reserved for the force transmission support piece, crumple energy absorption effects of the position of the threshold beam can be increased when a side collision occurs, the invasion amount to a driving cabin and the battery pack is reduced, and the safety of the side collision is improved.

The force transmission supporting pieces are arranged in a plurality of mode at intervals, so that the connection rigidity between the front floor longitudinal beam and the threshold beam can be increased, and the force transmission capacity of a force transmission channel formed between the threshold beam and the front floor longitudinal beam can be ensured. Through set up the energy-absorbing support on the threshold roof beam to make energy-absorbing support and biography power support piece correspond to arrange, the energy-absorbing ability of threshold roof beam position when can increase the side and bump reduces the invasion volume to driving cabin and battery package, is favorable to promoting collision security.

In addition, the overlap edges on the left side and the right side of the front floor panel comprise a first overlap joint part and a second overlap joint part, the first overlap joint part is overlapped on the threshold beam along the left-right direction of the whole vehicle, the second overlap joint part is overlapped on the threshold beam along the up-down direction of the whole vehicle, the overlap joint of the front floor panel and the threshold beam in different directions can be utilized, the connection strength between the front floor panel and the threshold beam is increased, the risk that the vehicle body structure turns upwards when the vehicle side bumps is reduced, and the force transmission effect when the side bumps can be ensured.

The threshold beam is made of hot forming steel, so that the structural strength of the threshold beam can be guaranteed, and the collision coping capability is improved. Through set up the weakening structure on the installation arm of battery package both sides, can absorb collision energy better when the side bumps, reduce the collision impact to the battery package inside, be favorable to promoting the security of battery package inner structure.

Another object of the present invention is to propose a vehicle having a body structure as described above.

The vehicle has the same beneficial effects as the vehicle body structure, and the description is omitted here.

Drawings

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

fig. 1 is a schematic view of a vehicle body structure (with a battery pack) according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the position A-A of FIG. 1;

FIG. 3 is a schematic view of a vehicle body structure (without a battery pack) according to an embodiment of the present invention;

FIG. 4 is a schematic view of the bottom view of the structure of FIG. 3;

FIG. 5 is a schematic view illustrating the connection between a threshold beam and a ring-shaped frame according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a portion of the structure of FIG. 5;

FIG. 7 is a schematic view of a sill beam according to the present invention;

FIG. 8 is a schematic view of the structure of FIG. 7 from another perspective;

FIG. 9 is a schematic view of the force transfer support of the present invention;

FIG. 10 is a schematic structural view of an energy absorbing bracket according to the present invention;

FIG. 11 is a schematic view of the structure of the front floor panel according to the present invention;

FIG. 12 is a schematic view of a projection on a front floor panel according to the present invention;

FIG. 13 is a schematic view showing the placement of a ring-shaped frame in a boss according to an embodiment of the present invention;

FIG. 14 is a cross-sectional view of the position B-B of FIG. 13;

FIG. 15 is a cross-sectional view of the position C-C of FIG. 13;

FIG. 16 is a schematic illustration of the overlap between a lap edge and a threshold beam according to an embodiment of the present invention;

fig. 17 is a schematic view of a battery pack according to the present invention;

Reference numerals illustrate:

100. A ring-shaped frame;

1. A threshold beam; 2. a front floor panel; 3. a front floor front cross member; 4. a battery pack; 5. a front floor rear cross member; 6. front floor stringers; 7. a force transfer support; 8. an energy absorbing bracket; 9. a battery pack mounting bracket;

1a, inclined plane; 1b, a mounting surface; 2a, a protruding part; 2b, middle channel; 201. overlapping edges; 201a, a first overlap portion; 201b, a second overlap; 4a, mounting arms; 7a, avoiding grooves;

K. An energy absorbing space; m, a cavity; G. a cavity; s, clearance.

Detailed Description

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

In the description of the present invention, it should be noted that, if terms indicating an orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. are presented, they are based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, if any, are also used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present invention, 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 invention can be understood by those of ordinary skill in the art in combination with specific cases.

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

Example 1

The present embodiment relates to a vehicle body structure including rocker beams 1 provided separately on both sides, a front floor panel 2 located between the two side rocker beams 1, and a ring-shaped frame 100 connected to the front floor panel 2, and a battery pack 4 connected between the two side rocker beams 1, as shown in fig. 1 to 5, and 13 to 15.

The above-mentioned annular frame 100 can form a force transmission channel between the threshold beams 1 on both sides along the left and right direction of the whole vehicle, and the annular frame 100 includes front floor stringers 6 disposed on both sides, a front floor front cross member 3 connected between front ends of the front floor stringers 6 on both sides, and a front floor rear cross member 5 connected between rear ends of the front floor stringers 6 on both sides.

At the same time, the front floor front cross member 3, the front floor rear cross member 5, and the side front floor stringers 6 are also formed with a cavity G between the front floor panel 2, and a ring cavity structure is formed between the ring frame 100 and the front floor panel 2.

At this time, the annular frame 100 formed by the transverse and longitudinal beams of the front floor is arranged, and the annular frame 100 and the front floor panel 2 form an annular cavity structure, so that the characteristics of the annular structure 100 and the cavity structure with high strength can be utilized, the structural strength of the vehicle body is increased, the force transmission effect of the force transmission channel formed by the annular frame 100 can be increased, the transverse transmission dispersion of the side collision force is facilitated, and the effect of improving the side collision safety of the whole vehicle can be achieved.

Based on the above description, specifically, as a preferred embodiment, the front floor stringers 6 on each side are located on the inner side of the side sill beam 1 and are connected with the force transmission support 7 between the side sill beam 1 and the side sill beam 1, and the ring-shaped frame 100 and the force transmission support 7 on each side are located below the front floor panel 2, and the battery pack 4 is located below the ring-shaped frame 100.

In this way, having the ring-shaped frame 100 and the two-sided force-transmitting supports 7 below the front floor panel 2 may facilitate the arrangement of both in the vehicle body. The annular frame 100 is connected with the two side threshold beams 1 through the force transmission supporting piece 7, so that the force transmission supporting piece 7 can be utilized to connect, a force transmission channel is formed between the two side threshold beams by the annular frame 100, and the lateral transmission and dispersion of the side collision force are facilitated.

Furthermore, as a preferred embodiment, as shown in fig. 2, in combination with fig. 5 and 6, on the basis of the ring-shaped frame 100 and the force-transmitting support 7 being located below the front floor panel 2, the present embodiment is provided with a gap s between each side sill beam 1 and the ipsilateral front floor rail 6, respectively, in which gap s the end of each side force-transmitting support 7 connected to the ipsilateral front floor rail 6 is located, and the respective side force-transmitting support 7 also encloses a cavity M with the front floor panel 2, and between the ipsilateral sill beam 1 and the front floor rail 6.

In this way, the gaps s are left between the front floor stringers 6 on each side and the side sill beams 1 on the same side, and the arrangement of the gaps s can be utilized to avoid interference between the sill beams 1 and the front floor stringers 6, so that the arrangement of the front floor stringers 6 can be facilitated. By locating the portion of the force transmission support 7 in the gap s and enclosing the forming cavity M between the force transmission support 7 and the front floor panel 2, the rocker 1 and the front floor rail 6, it will be appreciated that it is possible to use the feature of high structural strength of the cavity, increase the structural strength of the position of the force transmission support 7, and contribute to an increase in the collision force transmitting capacity.

It should be noted, of course, that instead of providing the gap s between the same side sill beam 1 and the front floor rail 6 as described above, in some embodiments it is also possible to have the front floor rail 6 on each side rest against the same side sill beam 1, while at the same time being connected by means of the force transmission support 7, the front floor rail 6 is also directly connected to the corresponding side sill beam 1 and forms a force transmission channel between the two side sill beams 1.

In this embodiment, the structure of each side force transmission supporting member 7 may be as shown in fig. 9, which may be a sheet metal member formed by stamping, and the cross section thereof may be "U" shaped, and at the same time, in order to facilitate the connection between the force transmission supporting member 7 and the threshold beam 1, the front floor longitudinal beam 6 and the front floor panel 2, a flange structure may be provided at the edge of the force transmission supporting member 7, and the force transmission supporting member 7 may be connected to the threshold beam 1, the front floor longitudinal beam 6 and the front floor panel 2 by welding using the flange structures at the respective edge positions.

In addition, as a preferred embodiment, as shown in fig. 2 and fig. 4 to 7, the bottom of each side force transmission support 7 may be disposed to be inclined upward in the direction of the same side front floor rail 6 in the right-left direction of the whole vehicle. At this time, by inclining the bottom of the force transmission support 7 upward, the collision force can be guided to be transmitted along the force transmission support 7 to the front floor side member 6 when the vehicle collides sideways, and the collision damage to the battery pack 4 can be reduced.

While still shown in fig. 2, in combination with fig. 6 and 9, in some embodiments, the present embodiment may also provide a relief groove 7a that is configured to clear the battery pack 4 at an end of each side force transfer support 7 that is adjacent to the ipsilateral front floor rail 6. The avoidance groove 7a can be formed when the force transfer support piece 7 is manufactured, and the avoidance groove 7a is formed at one end, close to the front floor longitudinal beam 6, of the force transfer support piece 7, and it can be understood that the force transfer support piece 7 can be prevented from occupying the arrangement space of the battery pack 4 below the front floor, the arrangement of the battery pack 4 is facilitated, meanwhile, the characteristics of easy crumple and energy absorption brought by the avoidance groove 7a can be obviously utilized, and the crumple and energy absorption capacity of the force transfer support piece 7 can be increased, so that the collision safety is improved.

In this embodiment, it should be noted that, in the specific preparation, the front floor panel 2, the front floor front cross member 3, the front floor rear cross member 5 and the front floor longitudinal member 6 may be, for example, conventional stamped sheet metal parts, or the front floor panel 2 and each beam structure may be, for example, formed by thermoforming. Meanwhile, the front floor front and rear cross members and the front floor stringers 6 on each side, and the front floor front and rear cross members and the front floor stringers 6 and the front floor panel 2 are usually connected by welding.

As a preferred embodiment, the front floor panel 2 of the present embodiment has a protruding portion 2a protruding upward in the vertical direction of the entire vehicle, as shown in fig. 11 and 12, and the ring-shaped frame 100 is located in the protruding portion 2a, as shown in fig. 13. At this time, by providing the convex portion 2a on the front floor panel 2 and having the ring-shaped frame 100 of the front floor cross and side members located in the convex portion 2a, it is understood that it can facilitate the arrangement of the battery pack 4 located under the front floor.

While the ring-shaped frame 100 is located in the boss portion 2a described above, it is preferable that, in some embodiments, for example, the bottom end surface of the ring-shaped frame 100 is also further arranged flush with the bottom end surface of the front floor panel 2. In this way, by making the bottom end surface of the ring-shaped frame 100 flush with the bottom end surface of the front floor panel 2, it is apparent that the arrangement of the battery pack 4 below can be more facilitated.

In addition, in the present embodiment, in a specific arrangement, it is preferable that the protruding portion 2a is formed so as to penetrate from one side to the other side of the front floor panel 2 in the vehicle left-right direction as shown in fig. 12. In this way, the protrusion 2d is provided so as to extend through the front floor panel 2, and thus the transverse rigidity of the front floor panel 2 can be increased by adopting the extending structure.

As further shown in fig. 11 and 12, the present embodiment is also formed with a center tunnel 2b extending in the front-rear direction of the entire vehicle on the front floor panel 2, similarly to the front floor structure in the conventional vehicle. The middle channel 2b is specifically formed by the front floor panel 2 itself protruding upwards, and based on the arrangement of the middle channel 2b, in some embodiments, as shown in fig. 13, the middle parts in the length direction of the front floor front cross member 3 and the front floor rear cross member 5 may be adapted to the middle channel 2b for bending design.

In this embodiment, as shown in fig. 2 to 8, as a preferred embodiment, both sides of the side sill beams 1 close to the battery pack 4 are also provided with inclined surfaces 1a arranged in an outward inclination, an energy absorption space K is formed between the inclined surfaces 1a and the battery pack 4, and the parts of the side force transmission supports 7 located in the energy absorption space K are also connected to the inclined surfaces 1a on the same side.

At this time, through the inclined plane 1a that the beam 1 of the threshold leaned out and set up for form energy-absorbing space K between inclined plane 1a and the battery package 4, and make the portion that passes power support piece 7 to be located in energy-absorbing space K connect on beam 1's inclined plane 1a of beam 1 of the threshold, it alright utilize energy-absorbing space K that forms as beam 1 of the threshold, especially let more crumple energy-absorbing space for passing power support piece 7, and then can increase the crumple energy-absorbing effect of beam 1 position of the threshold when the vehicle takes place the side to bump, in order to reach the effect that promotes whole car side and bump security.

In particular, the above-mentioned inclined surface 1a of the rocker 1 may be provided only over a part of the length of the rocker 1, and in order to facilitate connection of the battery pack 4, as a possible implementation, the present embodiment is also provided with a mounting surface 1b located in front of the inclined surface 1a, and a battery pack mounting bracket 9 provided on the inclined surface 1a, on the rocker 1. The mounting surface 1b and the battery pack mounting bracket 9 are provided with connecting holes to realize the connection and fixation of the battery pack 4 at the bottom of the vehicle body.

In addition, in the embodiment, as a preferred embodiment, the two side door sill beams 1 are made of hot formed steel, so that the door sill beam 1 is made of hot formed steel, the structural strength of the door sill beam 1 itself can be ensured, and the collision coping capability of the door sill beam 1 can be improved. However, instead of using hot-formed steel, it is of course also possible to use other suitable sheet metal parts for the sill beam 1 on each side.

In this embodiment, as shown in fig. 4 to 8, in the specific implementation, it is preferable that each side force transmission support member 7 is, for example, a plurality of side force transmission support members arranged at intervals in the front-rear direction of the entire vehicle. In this way, the provision of the plurality of side force transmitting supports 7 at intervals not only increases the connection rigidity between the front floor side members 6, i.e., the annular frame 100 and the rocker 1, but also ensures the force transmitting capability of the force transmitting passage formed between the rocker 1 and the annular frame 100 including the front floor side members 6.

At the same time, as a preferred embodiment, as also shown in fig. 1 to 3, the energy-absorbing brackets 8 can also be provided on each side sill beam 1 in this embodiment. The energy absorbing brackets 8 and the force transferring supporting pieces 7 on each side door sill beam 1 are respectively arranged on two opposite sides of the side door sill beam 1, the energy absorbing brackets 8 on each side can be arranged in a plurality, and the energy absorbing brackets 8 on each side are in one-to-one correspondence with the force transferring supporting pieces 7 on the same side. Therefore, the energy-absorbing support 8 is further arranged on the threshold beam 1, and the energy-absorbing support 8 and the force-transmitting support piece 7 are correspondingly arranged, so that the energy-absorbing capacity of the position of the threshold beam 1 during side collision can be increased, the intrusion amount into a driving cabin is reduced, and the collision safety is further improved.

In practical implementation, as shown in fig. 8 and 10, the energy-absorbing bracket 8 may be, for example, a sheet metal part formed by stamping, and may be welded on the threshold beam 1 by a flanging structure, and when connected to the threshold beam 1, the energy-absorbing bracket 8 and the threshold beam 1 may preferably also form a cavity in a surrounding manner, so as to increase the structural strength of the position of the energy-absorbing bracket 8, and improve the absorption and transmission capability of the collision force.

In the present embodiment, as shown in fig. 11, 12, and in combination with fig. 16, as a preferred embodiment, the left and right sides of the front floor panel 2 are provided with the joint edges 201, respectively, each of the side joint edges 201 is connected to the same side sill beam 1, and each of the side joint edges 201 includes a first joint portion 201a and a second joint portion 201b. The first lap portion 201a overlaps the rocker 1 in the left-right direction of the whole vehicle, and the second lap portion 201b overlaps the rocker 1 in the up-down direction of the whole vehicle.

Like this, through making the overlap edge 201 of the left and right sides of front floor panel 2 include first overlap joint portion 201a and second overlap joint portion 201b to make first overlap joint portion 201a overlap joint on threshold roof beam 1 along whole car left and right directions, second overlap joint portion 201b overlap joint on threshold roof beam 1 along whole car upper and lower direction, this embodiment just can utilize the overlap joint of front floor panel 2 and threshold roof beam 1 in different directions, increase the joint strength between front floor panel 2 and threshold roof beam 1, thereby help reducing the risk that vehicle side bumps the vehicle body middle part structure and takes place to turn up, can reach the purpose of guaranteeing vehicle side bumps the power transmission effect.

In a specific implementation, the above-mentioned joint edges 201 located on the left and right sides of the front floor panel 2, that is, the flange structures formed at the side edges of the front floor panel 2, wherein the flange structures extending in the up-down direction of the entire vehicle, that is, the flange structures bending with respect to the main body portion of the front floor panel 2, that is, the first joint portions 201a are formed, and the flange structures extending in the left-right direction of the entire vehicle, that is, the flange structures parallel to the main body portion of the front floor panel 2, form the second joint portions 201b.

In addition, in some embodiments, for example, the first overlap portion 201a and the second overlap portion 201b in each side overlap edge 201 of the front floor panel 2 may be alternately arranged in the front-rear direction of the entire vehicle, so that a better connection reinforcement can be achieved by alternately connecting the side portions and the top portion of the rocker 1. However, instead of the alternate arrangement, it is of course possible to use other arrangements of the first overlap portion 201a and the second overlap portion 201b on each side of the front floor panel 2, as long as it enables the connection of the front floor panel 2 and the rocker 1 in both the up-down and left-right directions of the entire vehicle.

In this embodiment, as further shown in fig. 17, mounting arms 4a are respectively provided on the left and right sides of the battery pack 4, and each side mounting arm 4a is connected to the same side sill beam 1 in cooperation with the above-mentioned mounting surface 1b and the battery pack mounting bracket 9, so as to achieve the connection arrangement of the battery pack 4 between the side sill beams 1. In addition, in the present embodiment, a weakened structure that is easily crushed by the attachment arms 4a may be provided on both the attachment arms 4a as a preferable embodiment.

In this case, the mounting arm 4a may be formed by extrusion or roll forming, for example, and the weakened structure may be a weakened hole formed in the mounting arm 4a, or may be formed by reducing the thickness of the material so as to be easily deformed by collapsing. By arranging the weakening structures on the mounting arms 4a at the two sides of the battery pack 4, it can be understood that the weakening structures can absorb collision energy better during side collision, reduce collision impact to the inside of the battery pack 4 and are beneficial to improving the safety of the internal structure of the battery pack 4.

The car body structure of this embodiment adopts the design as above, through setting up the horizontal, the ring type frame 100 that the longeron is constituteed of preceding floor for connect through the power transmission support piece 7 between ring type frame 100 and the both sides threshold roof beam 1, and make ring type frame 100 and preceding floor panel 2 form ring die cavity structure, the characteristics that usable ring type structure and cavity structural strength are big increase car body structural strength, simultaneously also can utilize ring type frame 100 and power transmission support piece 7 to form the power transmission passageway between the threshold roof beam 1 of both sides, it helps the side to bump collision power transversely transmits the dispersion in the automobile body, be favorable to promoting the security that whole car side bumped, and have fine practicality.

Example two

The present embodiment relates to a vehicle in which the vehicle body structure of the first embodiment is provided.

The vehicle of this embodiment can increase the structural strength of the vehicle body by arranging the vehicle body structure in the first embodiment, also helps the lateral transmission dispersion of the side collision force in the vehicle body, is favorable to promoting the safety of the side collision of the whole vehicle, and has good practicality.

The foregoing description of the preferred embodiments of the invention 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 invention.

Claims (10)

1. A vehicle body structure characterized in that:

the battery pack comprises threshold beams (1) which are arranged on two sides respectively, a front floor panel (2) which is arranged between the threshold beams (1) on two sides, a ring-shaped frame (100) which is connected to the front floor panel (2), and a battery pack (4) which is connected between the threshold beams (1) on two sides;

The annular frame (100) can form a force transmission channel along the left-right direction of the whole vehicle between the threshold beams (1) at two sides, the annular frame (100) comprises front floor longitudinal beams (6) which are respectively arranged at the left side and the right side, a front floor front cross beam (3) which is connected between the front ends of the front floor longitudinal beams (6) at two sides, and a front floor rear cross beam (5) which is connected between the rear ends of the front floor longitudinal beams (6) at two sides;

The front floor front cross beam (3), the front floor rear cross beam (5) and the front floor longitudinal beams (6) on two sides are formed with a cavity (G) in a surrounding mode between the front floor panel (2), and a ring-shaped cavity structure is formed between the ring-shaped frame (100) and the front floor panel (2).

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

the front floor longitudinal beams (6) on each side are positioned on the inner sides of the threshold beams (1) on the same side, and a force transmission supporting piece (7) is connected between the front floor longitudinal beams and the threshold beams (1) on the same side;

The annular frame (100) and the force transmission supporting pieces (7) on each side are all positioned below the front floor panel (2), and the battery pack (4) is positioned below the annular frame (100).

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

a gap(s) is formed between the threshold beam (1) on each side and the front floor longitudinal beam (6) on the same side, and one end, connected with the front floor longitudinal beam (6) on the same side, of the force transmission support piece (7) on each side is positioned in the gap(s);

-forming cavities (M) between the force-transmitting support (7) and the front floor panel (2) on each side, and the rocker beams (1) and the front floor stringers (6) on the same side.

4. The vehicle body structure according to claim 2, characterized in that:

The front floor panel (2) is provided with a protruding portion (2 a) protruding upwards along the up-down direction of the whole vehicle, the annular frame (100) is located in the protruding portion (2 a), and the bottom end surface of the annular frame (100) is flush with the bottom end surface of the front floor panel (2).

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

The bottoms of the force transmission supporting pieces (7) at each side are arranged in an upward tilting manner along the direction pointing to the front floor longitudinal beam (6) at the same side along the left-right direction of the whole vehicle; and/or the number of the groups of groups,

And one end of each side of the force transmission support piece (7) close to the front floor longitudinal beam (6) on the same side is provided with an avoidance groove (7 a) for avoiding the battery pack (4).

6. The vehicle body structure according to claim 2, characterized in that:

the two sides of the threshold beam (1) are provided with inclined planes (1 a) which are arranged in an outward-inclined way at one side close to the battery pack (4);

an energy absorption space (K) is formed between each inclined surface (1 a) and the battery pack (4), and the parts of the force transmission supporting pieces (7) located in the energy absorption space (K) on each side are connected to the inclined surfaces (1 a) on the same side.

7. The vehicle body structure according to claim 2, characterized in that:

The force transmission supporting pieces (7) on each side are a plurality of pieces which are arranged at intervals along the front-back direction of the whole vehicle, and the threshold beams (1) on each side are provided with energy absorption brackets (8);

the energy absorption brackets (8) and the force transmission supporting pieces (7) on the threshold beams (1) are respectively arranged on two opposite sides of the threshold beams (1), and the energy absorption brackets (8) on each side are a plurality of the force transmission supporting pieces (7) on the same side in one-to-one correspondence.

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

The left side and the right side of the front floor panel (2) are respectively provided with a lap joint edge (201), each side of the lap joint edge (201) is connected with the threshold beam (1) on the same side, and each side of the lap joint edge (201) comprises a first lap joint part (201 a) and a second lap joint part (201 b);

the first lap joint part (201 a) is lapped on the threshold beam (1) along the left-right direction of the whole vehicle, and the second lap joint part (201 b) is lapped on the threshold beam (1) along the up-down direction of the whole vehicle.

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

the threshold beams (1) at both sides are made of hot forming steel; and/or the number of the groups of groups,

The battery pack is characterized in that mounting arms (4 a) are respectively arranged at the left side and the right side of the battery pack (4), the mounting arms (4 a) at each side are connected to the threshold beam (1) at the same side, and weakening structures which are easy to collapse of the mounting arms (4 a) are respectively arranged on the mounting arms (4 a) at both sides.

10. A vehicle, characterized in that:

the vehicle has the vehicle body structure according to any one of claims 1 to 9.