CN219728329U - Vehicle body middle structure and vehicle - Google Patents

Abstract

The utility model provides a vehicle body middle structure and a vehicle, wherein the vehicle body middle structure comprises a lower vehicle body and a battery pack connected to the bottom of the lower vehicle body, an upper cover plate of the battery pack forms a front floor panel in the lower vehicle body, a sealing structure is arranged between the top of the upper cover plate and the lower vehicle body, the sealing structure is an annular sealing structure arranged around the contact position of the upper cover plate and the lower vehicle body, and the left side and the right side of a middle channel in the lower vehicle body are respectively provided with a sealing structure. According to the middle structure of the vehicle body, the upper cover plate of the battery pack forms the front floor panel, so that the structure of the vehicle body can be simplified, the weight reduction of the vehicle body is facilitated, the integration level between the battery pack and the vehicle body can be improved, meanwhile, the annular sealing structures are arranged on the left side and the right side of the middle channel, the sealing between the vehicle body and the battery pack can be ensured, the sealing performance of the position of the battery pack is improved, and the safety of the battery pack is facilitated.

Description

Vehicle body middle structure and vehicle

Technical Field

The utility model relates to the technical field of vehicle body structures, in particular to a vehicle body middle structure. The utility model also relates to a vehicle provided with the improved vehicle body middle structure.

Background

With the development of battery technology and the continuous promotion of integration and light weight of the whole vehicle, the structures of the battery and the vehicle body are more and more compact. The battery pack of the new energy automobile is generally arranged at the bottom of the middle part of the automobile and is positioned below the front floor. The middle structure of the vehicle body, especially the frame structure near the battery pack, is not only required to bear the weight of the battery pack, but also plays a role in protecting the battery pack. But also an important support structure for a vehicle, needs to carry the main weight of the body of the vehicle, while also having anti-collision strength to reduce the risk of collisions from the sides of the vehicle.

The existing middle frame structure of the automobile body is complex in arrangement and comprises a threshold beam, a front floor, a battery pack shell, a threshold reinforcement beam, a seat cross beam and the like. The whole vehicle is heavier in quality, and the assembly process is complex, so that the improvement of the assembly efficiency of the whole vehicle is not facilitated. Therefore, it is significant how to facilitate the lightweight design and to improve the degree of integration in the design of the vehicle body middle structure.

Disclosure of Invention

In view of the foregoing, the present utility model is directed to a vehicle body middle structure, which is beneficial to improving the integration degree of a battery pack and a vehicle body and improving the tightness of the battery pack.

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

the middle part structure of the vehicle body comprises a lower vehicle body and a battery pack connected to the bottom of the lower vehicle body, wherein an upper cover plate of the battery pack forms a front floor panel in the lower vehicle body, and a sealing structure is arranged between the top of the upper cover plate and the lower vehicle body;

the sealing structure is an annular sealing structure which is arranged around the contact position of the upper cover plate and the lower vehicle body, and the left side and the right side of the middle channel in the lower vehicle body are respectively provided with one sealing structure.

Further, the sealing structure adopts a sealing strip which is abutted between the upper cover plate and the lower vehicle body.

Further, the lower car body is provided with threshold beams which are respectively arranged at the left side and the right side of the middle channel, the front end of the upper cover plate is connected with the front coaming, and the rear end of the upper cover plate is connected with the rear floor and rear floor longitudinal beams at the left side and the right side of the rear floor; each side of the sealing structure is connected with the threshold beam, the front coaming along the upper cover plate and the threshold beam the contact positions among the middle channel, the rear floor and the rear floor longitudinal beam are sequentially arranged.

Further, the middle channel is buckled on the upper cover plate, and a wire harness channel for a wire harness to pass through is formed between the middle channel and the upper cover plate.

Further, the left and right sides of well passageway are equipped with well passageway respectively and strengthen the longeron, well passageway through both sides well passageway strengthen the longeron with the upper cover plate links to each other, just seal structure is located well passageway strengthen the longeron with between the upper cover plate.

Further, the rear ends of the middle channel reinforcing longitudinal beams on the two sides are provided with mounting brackets connected with the rear floor, and the rear ends of the battery packs are mounted on the mounting brackets through mounting pieces.

Furthermore, the threshold beams at both sides are provided with connecting surfaces which are arranged in a declining manner along the direction pointing to the outside of the vehicle in the left-right direction of the whole vehicle; the left side and the right side of the battery pack are respectively provided with inclined planes matched with the connecting surfaces on the same side, the inclined planes on each side are abutted with the connecting surfaces on the same side, and the threshold beams on each side are connected with the battery pack through connecting structures crossing the connecting surfaces on the same side and the inclined planes.

Further, the battery pack is provided with a frame connected with the upper cover plate, the frame comprises side beams which are respectively arranged at the left side and the right side, each side of the inclined plane is arranged on the side beam at the corresponding side, and each side of the side beam is connected with the threshold beam at the same side through the connecting structure.

Further, a stiffening beam is arranged in the frame, seat mounting beams positioned above the upper cover plate are arranged between the threshold beams at two sides, and the stiffening beam is connected with the seat mounting beams through connecting pieces.

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

according to the middle structure of the vehicle body, the upper cover plate of the battery pack forms the front floor panel, so that the structure of the vehicle body can be simplified, the weight reduction of the vehicle body is facilitated, the integration level between the battery pack and the vehicle body can be improved, meanwhile, the annular sealing structures are arranged on the left side and the right side of the middle channel, the sealing between the vehicle body and the battery pack can be ensured, the sealing performance of the position of the battery pack is improved, and the safety of the battery pack is facilitated.

In addition, the sealing structure adopts the sealing strip, and has the characteristics of simple structure, reliable sealing and convenient arrangement. The sealing structure is sequentially arranged along the threshold beam, the front coaming, the middle channel, the rear floor and the rear floor longitudinal beam, so that a required annular sealing structure can be formed, and sealing between the battery pack and the vehicle body can be realized. The wire harness channel is formed in the middle channel, so that the wiring of the wire harness in the vehicle can be facilitated, and meanwhile, the characteristic of high structural strength of the cavity can be utilized, and the structural strength of the middle channel is improved.

Secondly, the structural strength of the middle channel position can be further increased by arranging the middle channel reinforcing longitudinal beam, and a force transmission channel can be additionally arranged in the middle part of the automobile body Y, namely in the middle part of the automobile body width direction, so that the transmission and dispersion of collision force are facilitated. The mounting bracket is arranged at the rear section of the middle channel reinforcing longitudinal beam, so that the rear end of the battery pack can be conveniently mounted, and meanwhile, the stability of the rear end of the battery pack can be improved by means of peripheral components such as the middle channel, a rear floor and the like.

In addition, all through the junction surface and the inclined plane butt of slope between battery package and the threshold roof beam, can be when taking place the side to bump for the battery package is the slippage downwards, can avoid the battery package to receive the extrusion collision of automobile body structure, reducible battery package risk of firing, and do benefit to the security that promotes whole car collision. The inclined plane is arranged on the side beam, so that the side beam can be conveniently formed, and meanwhile, the reliability of connection between the battery pack and the threshold beam can be ensured. And moreover, the inner stiffening beam in the battery pack is connected with the seat mounting cross beam, so that the connection between the battery pack area and the vehicle body can be increased, and the torsional rigidity can be improved.

Another object of the present utility model is to propose a vehicle in which the vehicle body is provided with the vehicle body intermediate structure as described above.

Compared with the prior art, the vehicle has the same beneficial effects as the vehicle body middle structure, and the vehicle is not repeated here.

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 view of a vehicle body middle structure according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a vehicle body center structure according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a third view of a mid-body structure according to an embodiment of the present utility model;

fig. 4 is a schematic structural view illustrating an assembled state of a battery pack and a rear floor according to an embodiment of the present utility model;

fig. 5 is a schematic view illustrating an assembled state of a battery pack and a sill beam according to an embodiment of the present utility model;

fig. 6 is a partially enlarged view showing an assembled state of a battery pack and a sill beam according to an embodiment of the present utility model;

FIG. 7 is an enlarged view of a portion of a rocker beam according to an embodiment of the present utility model;

fig. 8 is a schematic view illustrating a structure of a battery pack according to a first view angle of an embodiment of the present utility model;

fig. 9 is a schematic view illustrating a structure of a battery pack according to a second view angle of the embodiment of the present utility model;

FIG. 10 is a schematic view illustrating a structure of a frame according to an embodiment of the present utility model;

reference numerals illustrate:

1. a threshold beam; 2. a front floor upper longitudinal beam; 3. a seat mounting cross beam; 4. a sealing structure; 5. a battery pack; 7. a rear floor stringer; 9. a middle channel; 11. middle channel reinforcing stringers; 12. a rear floor frame; 13. a rear floor; 14. a threaded connection; 15. a mounting bracket; 16. a dash panel;

151. a mounting hole; 101. a connection surface; 102. welding a nut; 500. an upper cover plate; 501. a front cross member; 502. a rear cross member; 503. side beams; 504. a stiffening beam; 5011. a front connecting plate; 5021. a rear connecting plate; 5031. an inclined plane; 601. a rear floor front cross member; 602. a rear floor center cross member; 603. rear floor rear cross member.

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, 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 utility model 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 utility model. 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.

In addition, in the description of the present utility model, unless otherwise specifically defined, the mating components may be connected using conventional connection structures in the art. Moreover, the terms "mounted," "connected," and "connected" are to be construed broadly. 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.

In addition, the term "upper, lower, left, right, front, rear" used in the present embodiment is 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.

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

The embodiment relates to a vehicle body middle structure, which is beneficial to the integration degree of a battery pack and a vehicle body and the improvement of the tightness of the position of the battery pack.

The vehicle body center structure of the present embodiment mainly includes a lower vehicle body, and a battery pack 5 attached to the bottom of the lower vehicle body, as shown in fig. 1 to 5, in terms of overall construction, an upper lid plate 500 of the battery pack 5 constitutes a front floor panel in the lower vehicle body, and a seal structure 4 is provided between the top of the upper lid plate 500 and the lower vehicle body. The seal structure 4 is an annular seal structure provided around the contact position of the upper cover plate 500 with the lower vehicle body, and one seal structure 4 is provided on each of the left and right sides of the center tunnel 9 in the lower vehicle body.

In the above structure, the upper cover plate 500 of the battery pack 5 forms the front floor panel, so that the structure of the vehicle body can be simplified, the weight of the vehicle body can be reduced, the integration level between the battery pack 5 and the vehicle body can be improved, meanwhile, the annular sealing structures 4 are arranged at the left side and the right side of the middle channel 9, the sealing between the vehicle body and the battery pack 5 can be ensured, the sealing performance of the position of the battery pack is improved, and the safety of the battery pack is improved.

In detail, referring to fig. 1 to 5, first, the lower vehicle body of the present embodiment is constructed with rocker beams 1 provided separately on the left and right sides, seat mounting cross members 3 connected between the rocker beams 1 on both sides, and front floor upper side members 2 and a center tunnel 9 arranged between the rocker beams 1 on both sides. Wherein, seat installation crossbeam 3 includes preceding installation crossbeam and rear mounting crossbeam, and this seat installation crossbeam 3 is used for installing the front seat, and preceding installation crossbeam and rear mounting crossbeam extend to the threshold roof beam 1 of opposite side by threshold roof beam 1 of one side to link to each other with longeron 2 and well passageway 9 on the front floor. The front floor upper stringers 2 are two symmetrically arranged about the middle tunnel 9, and the front ends of the front floor upper stringers 2 extend to the front cabin stringers on the same side, respectively, and the rear ends of the front floor upper stringers 2 are connected to the rear floor stringers 7. The front end of the middle tunnel 9 extends to the dash panel 16, and the rear end of the middle tunnel 9 extends below the middle of the rear floor 13.

As a modification of the present embodiment, in the present embodiment, the upper cover plate 500 of the battery pack 5 constitutes a front floor panel in the lower vehicle body, and the side sill beams 1 are respectively connected to the left and right sides of the upper cover plate 500. The front floor upper side member 2, the middle passage 9, the front mounting cross member and the rear mounting cross member are positioned above the upper cover plate 500 and are connected with the upper cover plate 500. The front end of the upper cover 500 is connected to the dash panel 16, and the rear end of the upper cover 500 is connected to the rear floor 13 and the rear floor stringers 7 on the left and right sides of the rear floor 13.

As a preferred embodiment, the sealing structure 4 of the present embodiment adopts a sealing strip abutting between the upper cover plate 500 and the lower vehicle body, so that the sealing structure has the characteristics of simple structure, reliable sealing and convenient arrangement. Further, as a further preferred embodiment of the present embodiment, in the present embodiment, the above-described side seal structures 4 are provided in order along the contact positions between the upper cover plate and the rocker 1, the dash panel 16, the center tunnel 9, the rear floor 13, and the rear floor side members 7. This forms the desired annular structure, which is advantageous in achieving a seal between the battery pack 5 and the vehicle body.

In order to facilitate wiring of the wire harness in the vehicle, in the present embodiment, as shown in fig. 4, the cross section of the middle channel 9 is shaped like a letter "a few" and is fastened to the upper cover 500, and a wire harness channel through which the wire harness passes is formed between the middle channel 9 and the upper cover 500. Therefore, the wire harness can pass through the wire harness channel, the arrangement of the wire harness is facilitated, and meanwhile, the cavity formed between the middle channel 9 and the upper cover plate 500 can improve the structural strength of the middle channel by utilizing the characteristic of high structural strength of the cavity.

As a preferred embodiment of the present embodiment, in the present embodiment, the left and right sides of the middle channel 9 are respectively provided with the middle channel reinforcing stringers 11, the middle channel 9 is specifically connected to the upper cover plate 500 through the middle channel reinforcing stringers 11 on both sides, and the sealing structure 4 is also located between the middle channel reinforcing stringers 11 and the upper cover plate 500. The arrangement of the middle channel reinforcing longitudinal beam 11 can further increase the structural strength of the position of the middle channel 9, and can also increase a force transmission channel in the middle part of the width direction of the vehicle body, thereby being beneficial to the transmission and dispersion of collision force.

In the present embodiment, as shown in fig. 3, 5, and 6, and in combination with fig. 8 to 10, the battery pack 5 has a frame that is structurally connected to the upper cover 500 and is composed of a front cross member 501, a rear cross member 502, and side sills 503 that are provided separately on the left and right sides. In order to improve the structural strength of the battery pack 5, in this embodiment, reinforcing beams 504 are also disposed in the frame, and the reinforcing beams 504 include a plurality of reinforcing cross members and reinforcing longitudinal members that are connected to each other in a crossing manner. On the basis of the frame arrangement, the arrangement of the stiffening beams 504 is beneficial to not only improving the structural strength of the battery pack 5, but also facilitating the dispersion and transmission of collision force in the area of the battery pack 5.

To facilitate connection of the battery pack 5 to the vehicle body, a front connection plate 5011 is provided on the front cross member 501, and a rear connection plate 5021 is provided on the rear cross member 502. Wherein, preceding connecting plate 5011 connects on preceding sub vehicle frame, and back connecting plate 5021 connects the rear end at well passageway reinforcing longitudinal beam 11, so sets up, not only can make the collision force of preceding sub vehicle frame department directly transmit to the battery package frame when the collision, is convenient for disperse collision force to also can avoid preceding sub vehicle frame to shift backwards collision battery package 5 when the collision, cause the module impaired, and influence the security of battery package 5.

In order to facilitate the installation of the rear end of the battery pack 5, in this embodiment, the rear ends of the channel reinforcing stringers 11 in both sides are provided with mounting brackets 15 connected to the rear floor 13, and the rear end of the battery pack 5 is mounted on the mounting brackets 15 through mounting members, that is, the battery pack 5 is connected to the mounting brackets 15 through the rear connection plate 5021.

The rear floor assembly has a rear floor frame 12 therein, and a rear floor front cross member 601, a rear floor center cross member 602, and a rear floor rear cross member 603 are arranged on the rear floor frame 12 at intervals in the vehicle front-rear direction. The mounting bracket 15 is specifically located below the beam 602 in the rear floor, and the mounting bracket 15 is provided with a mounting hole 151, and the above-mentioned mounting member may be screwed with the mounting hole 151 by using, for example, a bolt or a stud, etc., so as to mount the rear end of the battery pack 5 on the mounting bracket 15. The mounting bracket 15 arranged at the rear section of the middle channel reinforcing longitudinal beam 11 not only can facilitate the mounting of the rear end of the battery pack 5, but also can improve the mounting stability of the rear end of the battery pack 5 by means of peripheral components such as the middle channel 9, the rear floor 13 and the like.

As a further improvement of the present embodiment, in the present embodiment, the connecting surfaces 101 are provided on both side sill beams 1, and in the right-left direction of the entire vehicle, the connecting surfaces 101 are disposed to be inclined downward in the direction directed to the outside of the vehicle. The left and right sides of the battery pack 5 are respectively provided with inclined surfaces 5031 adapted to the connection surfaces 101 on the same side, the inclined surfaces 5031 on each side are abutted against the connection surfaces 101 on the same side, and the side sill beams 1 and the battery pack 5 are connected together by a connection structure traversing the connection surfaces 101 on the same side and the inclined surfaces 5031.

In this structure, set up the connection face 101 and inclined plane 5031 butt that all pass through the slope between two side sill roof beams 1 and the side roof beam 503, can be when taking place the side and bump for battery package 5 is slipping downwards, can avoid battery package 5 to receive the extrusion collision of automobile body structure, reducible battery package 5 risk of firing, and do benefit to the security that promotes whole car collision.

Specifically, referring to fig. 6 and 7, the rocker beams 1 on both sides structurally each include a rocker inner plate and a rocker outer plate, between which a cavity is formed. Further, as a further modification of the present embodiment, as shown in fig. 7, both side sill beams 1 are provided with a connecting surface 101. In the left-right direction of the entire vehicle, the connection surface 101 is inclined downward in the direction of the outside of the vehicle.

In a preferred embodiment, the inclined surfaces 5031 are provided on the side sills 503, and the inclined surfaces 5031 are adapted to the connection surfaces 101 on the same side, and abut against the connection surfaces 101 on the same side, respectively, and the side sills 503 and the rocker beams 1 on the same side are connected together by the connection structure. By providing the inclined surface 5031 on the side sill 503, the formation of the inclined surface 5031 can be facilitated, and at the same time, the reliability of the connection between the battery pack 5 and the rocker 1 can be ensured.

The above-mentioned connection structure is a preferred embodiment, and is a screw connection structure, that is, the connection surface 101 and the inclined surface 5031 on the same side are connected by screw connection, so that the structure is simple, the implementation is convenient, and the slipping of the battery pack 5 can be realized during the collision.

Specifically, with continued reference to fig. 6 and 7, the screw structure includes a weld nut 102 fixedly attached to the rocker beam 1, and a screw coupling member 14 penetrating through a third coupling hole formed in the inclined surface 5031, the screw coupling member 14 being screw-coupled to the weld nut 102 so that the side beam 503 is coupled to the rocker beam 1. Also, preferably, the connection structure is a plurality of connection structures arranged at intervals in the front-rear direction of the whole vehicle, so that the reliability of the connection of the battery pack 5 to the vehicle body can be ensured.

It should be noted that, besides the above-mentioned screw connection structure, the connection structure may also adopt a structure form such as a clamping connection or a plugging connection, so as to ensure the connection stability of the battery pack 5 and the vehicle body.

As a preferred embodiment of the present embodiment, in the present embodiment, the reinforcing beam 504 in the battery pack 5 is connected to the seat mounting cross member 3 by a connecting member. The connection member may be, for example, a bolt or a stud, so that the reinforcing beam 504 in the battery pack 5 is connected with the seat mounting cross beam 3, and the connection with the vehicle body can be increased in the area of the battery pack 5, thereby facilitating the improvement of the torsional rigidity of the vehicle body.

The automobile body middle part structure of this embodiment not only can simplify the automobile body structure, does benefit to the automobile body and subtracts heavy to can improve the integrated level between battery package 5 and the automobile body, seal structure 4 that sets up moreover also can guarantee the seal between automobile body and the battery package 5, promotes the leakproofness in battery package 5 position, and is favorable to promoting the security of battery package 5.

Further, the present embodiment also relates to a vehicle in which the vehicle body is provided with the above-described vehicle body intermediate structure.

The vehicle of this embodiment may have the same beneficial effects as the vehicle body middle structure by adopting the vehicle body middle structure, and will not be described here again.

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 (10)

1. A mid-vehicle body structure, characterized in that:

the vehicle comprises a lower vehicle body and a battery pack (5) connected to the bottom of the lower vehicle body, wherein an upper cover plate (500) of the battery pack (5) forms a front floor panel in the lower vehicle body, and a sealing structure (4) is arranged between the top of the upper cover plate (500) and the lower vehicle body;

the sealing structure (4) is an annular sealing structure which is arranged around the contact position of the upper cover plate (500) and the lower vehicle body, and the left side and the right side of the middle channel (9) in the lower vehicle body are respectively provided with one sealing structure (4).

2. The mid-body structure according to claim 1, wherein:

the sealing structure (4) adopts a sealing strip which is abutted between the upper cover plate and the lower vehicle body.

3. The mid-body structure according to claim 1, wherein:

the lower car body is provided with threshold beams (1) which are respectively arranged at the left side and the right side of the middle channel (9), the front end of the upper cover plate (500) is connected with the front coaming (16), the rear end of the upper cover plate (500) is connected with the rear floor (13) and rear floor longitudinal beams at the left side and the right side of the rear floor (13);

the sealing structures (4) on each side are sequentially arranged along the contact positions between the upper cover plate (500) and the threshold beam (1), between the front coaming (16), between the middle channel (9), between the rear floor (13) and the rear floor longitudinal beam.

4. A mid-body structure as set forth in claim 3, wherein:

the middle channel (9) is buckled on the upper cover plate (500), and a wire harness channel for a wire harness to pass through is formed between the middle channel and the upper cover plate.

5. A mid-body structure as set forth in claim 3, wherein:

the left and right sides of well passageway (9) are equipped with well passageway reinforcing longitudinal beam (11) respectively, well passageway (9) through both sides well passageway reinforcing longitudinal beam (11) with upper cover plate (500) link to each other, just seal structure (4) are located between well passageway reinforcing longitudinal beam (11) and upper cover plate (500).

6. The mid-body structure of claim 5, wherein:

the rear ends of the middle channel reinforcing longitudinal beams (11) on two sides are provided with mounting brackets (15) connected with the rear floor (13), and the rear ends of the battery packs (5) are mounted on the mounting brackets (15) through mounting pieces.

7. The vehicle body intermediate structure according to any one of claims 3 to 6, characterized in that:

the two sides of the threshold beam (1) are respectively provided with a connecting surface (101), and the connecting surfaces (101) are arranged in a declining manner along the direction pointing to the outside of the vehicle in the left-right direction of the whole vehicle;

the left side and the right side of the battery pack (5) are respectively provided with inclined planes (5031) matched with the connecting surfaces (101) on the same side, the inclined planes (5031) on each side are abutted with the connecting surfaces (101) on the same side, and the threshold beams (1) on each side are connected with the battery pack (5) through connecting structures crossing the connecting surfaces (101) on the same side and the inclined planes (5031).

8. The mid-body structure of claim 7, wherein:

the battery pack (5) is provided with a frame connected with the upper cover plate (500), the frame comprises side beams (503) which are respectively arranged at the left side and the right side, each side of the inclined plane (5031) is arranged on the side beam (503) at the corresponding side, and each side of the side beam (503) is connected with the threshold beam (1) at the same side through the connecting structure.

9. The mid-body structure of claim 8, wherein:

the frame is internally provided with a stiffening beam (504), seat mounting beams (3) positioned above the upper cover plate (500) are arranged between the threshold beams (1) at two sides, and the stiffening beam (504) is connected with the seat mounting beams (3) through connecting pieces.

10. A vehicle, characterized in that:

a vehicle body in which the vehicle body intermediate structure according to any one of claims 1 to 9 is provided.