CN220315136U

CN220315136U - Vehicle body structure and vehicle

Info

Publication number: CN220315136U
Application number: CN202321352948.4U
Authority: CN
Inventors: 韩西姗; 李龙; 胡鑫; 闫军飞; 郑日龙
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2024-01-09
Anticipated expiration: 2033-05-30

Abstract

The utility model belongs to the technical field of vehicle body structures, and relates to a vehicle body structure and a vehicle. The vehicle body structure comprises a front floor sealing plate and a battery pack, wherein the battery pack is arranged below the front floor sealing plate, and the front floor sealing plate is connected with the battery pack to form a sealing structure. The vehicle body structure can effectively reduce the vehicle height and the vehicle weight.

Description

Vehicle body structure and vehicle

Technical Field

The utility model belongs to the technical field of vehicle body structures, and particularly relates to a vehicle body structure and a vehicle.

Background

The existing vehicle body structure is provided with a front floor, and the battery is packaged below the front floor, however, due to the existence of the front floor, the ground clearance of the vehicle body is smaller after the battery package is installed, so that the height of the vehicle body is required to be increased, and the production cost of the vehicle is increased.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: aiming at the technical problem that the existing vehicle body structure enables the ground clearance of the vehicle body to be smaller, the vehicle body structure and the vehicle are provided.

In order to solve the technical problems, in one aspect, an embodiment of the present utility model provides a vehicle body structure, including a front floor sealing plate and a battery pack, where the battery pack is disposed below the front floor sealing plate along a height direction of the vehicle body, and the front floor sealing plate is connected with the battery pack to form a sealing structure.

According to the vehicle body structure provided by the embodiment of the utility model, the battery pack and the front floor sealing plate are matched to form the sealing structure of the passenger cabin, so that the front floor structure of the traditional structure is omitted, the vehicle height can be effectively reduced, the vehicle weight is lightened, particularly for the vehicle type limited by the vehicle body, the ground clearance of the whole vehicle is improved, the internal passenger space is improved, and the light effect is realized.

Optionally, the front floor sealing plate comprises a sealing plate frame, a first mounting cross beam and a second mounting cross beam, wherein the sealing plate frame is a rectangular annular frame, the first mounting cross beam and the second mounting cross beam are respectively mounted on the sealing plate frame along the width direction of the vehicle body, and the first mounting cross beam is positioned at the front side of the second mounting cross beam along the length direction of the vehicle body;

the first mounting cross beam and the second mounting cross beam are respectively connected with the battery pack.

Optionally, the battery pack comprises a battery pack body composed of a plurality of electric cores, and a first battery pack reinforcing beam is arranged between any two adjacent electric cores;

the vehicle body structure further comprises a battery pack mounting supporting plate and a first connecting piece, wherein the battery pack mounting supporting plate is arranged above the first mounting cross beam along the height direction of the vehicle body, and the first connecting piece is connected among the battery pack mounting supporting plate, the first mounting cross beam and the battery pack body; the position of the first connecting piece along the length direction of the vehicle body corresponds to the position of the first battery pack reinforcing beam.

Optionally, the battery pack further comprises a second battery pack reinforcement beam mounted on the battery pack body;

the body structure further includes a second connector connected between the second mounting cross member and the second battery pack reinforcement beam.

Optionally, the battery pack further includes a first sealing strip and a second sealing strip, wherein the first sealing strip and the second sealing strip are arranged on the battery pack body, the front side of the second mounting cross beam abuts against the first sealing strip, and the rear side of the second mounting cross beam abuts against the second sealing strip.

Optionally, the front floor sealing plate is an integral sealing plate.

Optionally, the vehicle body structure further includes a front seat front cross member mounted on the first mounting cross member and a front seat rear cross member mounted on the second mounting cross member.

Optionally, the middle part of the rear cross beam of the front row of seats along the length direction of the vehicle body is concave, so that the cross section of the rear cross beam of the front row of seats is M-shaped;

the second connecting piece is connected with the rear cross beam of the front-row seat, and the second connecting piece is positioned at the concave position of the rear cross beam of the front-row seat.

Optionally, the vehicle body structure further includes a dash panel front cross member lower section, a left threshold inner plate, a right threshold inner plate, and a middle floor lower cross member, a front side of the front floor sealing plate is connected with the dash panel front cross member lower section, a rear side of the front floor sealing plate is connected with the middle floor lower cross member, a left side of the front floor sealing plate is connected with the left threshold inner plate, and a right side of the front floor sealing plate is connected with the right threshold inner plate.

Optionally, the vehicle body structure further comprises a left rear longitudinal beam front section and a right rear longitudinal beam front section, the left end of the middle floor underfloor beam is connected with the left rear longitudinal beam front section, and the right end of the middle floor underfloor beam is connected with the right rear longitudinal beam front section.

Optionally, the left threshold inner plate comprises a first longitudinal plate and a first transverse plate, the right end of the first transverse plate is connected with the lower end of the first longitudinal plate, and the first transverse plate is connected with the battery pack;

the right threshold inner plate comprises a second longitudinal plate and a second transverse plate, the left end of the second transverse plate is connected with the lower end of the second longitudinal plate, and the second transverse plate is connected with the battery pack;

the vehicle body structure further comprises a first seat beam connecting plate and a second seat beam connecting plate, wherein the first seat beam connecting plate is connected between the upper end of the first longitudinal plate and the left end of the front seat rear beam, and the second seat beam connecting plate is connected between the upper end of the second longitudinal plate and the right end of the front seat rear beam.

Optionally, the upper end of the first longitudinal plate is arranged at 90 degrees with the plane of the front floor sealing plate;

the upper end of the second longitudinal plate is arranged at 90 degrees with the plane of the front floor sealing plate.

Optionally, the vehicle body structure further includes a left sill reinforcement beam installed above the first cross plate and located on the left side of the first vertical plate, and a right sill reinforcement beam installed above the second cross plate and located on the right side of the second vertical plate;

the position of the highest point of the left threshold reinforcement beam and the position of the highest point of the right threshold reinforcement beam are all flush with the highest surface of the rear cross beam of the front seat.

In another aspect, an embodiment of the present utility model provides a vehicle including the above-described vehicle body structure.

Drawings

FIG. 1 is a schematic view of a vehicle body structure provided in an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of FIG. 1 along the length of the vehicle body at the front seat cross-member and the rear seat cross-member;

FIG. 3 is a schematic view of the battery pack of FIG. 2;

FIG. 4 is a schematic view of the cell pack reinforcement beam of FIG. 3;

FIG. 5 is an enlarged schematic view of the rear cross member of the front seat of FIG. 2;

fig. 6 is a cross-sectional view of fig. 1 at the left rocker inner panel in the vehicle body width direction;

fig. 7 is a schematic view of fig. 1 at the left rocker inner panel.

Reference numerals in the specification are as follows:

1. a front floor sealing plate; 101. a seal plate frame; 102. a first mounting beam; 103. a second mounting beam;

2. the lower section of the front cross beam of the front coaming;

3. a left rocker inner panel; 301. a first longitudinal plate; 302. a first cross plate; 303. a first longitudinal protection plate;

4. a right rocker inner panel;

5. a middle floor lower beam;

6. front row seat front cross beam;

7. a front seat rear cross member;

8. a battery pack; 801. a battery pack body; 802. a first battery pack reinforcement beam; 803. a second battery pack reinforcement beam; 804. a first sealing strip; 805. a second sealing strip;

9. a battery pack mounting support plate;

10. a first connector;

11. a second connector; 1101. a second threaded sleeve; 1102. a second bolt;

12. front section of left rear longitudinal beam;

13. the front section of the right rear longitudinal beam;

14. a first seat cross beam connection plate;

15. left threshold stiffening beams.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 7, the vehicle body structure provided by the embodiment of the utility model comprises a front floor sealing plate 1 and a battery pack 8, wherein the battery pack 8 is arranged below the front floor sealing plate 1 along the height direction of the vehicle body, and the front floor sealing plate (1) is connected with the battery pack 8 to form a sealing structure.

According to the vehicle body structure provided by the embodiment of the utility model, the battery pack 8 is matched with the front floor sealing plate 1 to form the sealing structure of the passenger cabin, so that the front floor structure of the traditional structure is omitted, the vehicle height can be effectively reduced, the vehicle weight is lightened, particularly for the vehicle type limited by the vehicle body, the ground clearance of the whole vehicle is improved, the internal passenger space is improved, and the light weight effect is realized.

In one embodiment, as shown in fig. 1, the vehicle body structure further includes a dash panel front cross member lower section 2, a left rocker inner panel 3, a right rocker inner panel 4, a center floor lower cross member 5, a front seat front cross member 6, and a front seat rear cross member 7. The front side of the front floor sealing plate 1 is connected with the lower section 2 of the front cross beam of the front coaming so as to be connected with a front cabin assembly. The rear side of the front floor sealing plate 1 is connected with the middle floor lower cross beam 5. The left side of the front floor sealing plate 1 is connected with the left threshold inner plate 3 so as to be connected with a left side threshold. The right side of the front floor sealing plate 1 is connected with the right threshold inner plate 4 so as to be connected with a right side wall threshold. The front seat front cross beam 6 and the front seat rear cross beam 7 are respectively arranged above the front floor sealing plate 1 along the height direction of the vehicle body, and the front seat front cross beam 6 is positioned at the front side of the front seat rear cross beam 7 along the length direction of the vehicle body.

Through the connection between each crossbeam (front coaming front beam lower section 2 and middle floor lower beam 5) and each threshold (left threshold inner plate 3 and right threshold inner plate 4) and battery package 8, provide for the platformization battery package 8 and compare in traditional electric motor car bigger battery package 8 space, make battery package 8 can arrange (extend) in left and right threshold department along automobile body width direction, furthest has utilized automobile body width direction's space, increases battery package 8 capacity. And the endurance mileage is improved.

Meanwhile, the periphery of the battery pack 8 is connected with each beam and the threshold to form a double-layer structure, and the battery pack 8, the front floor sealing plate 1 and the front and rear beams of the front row of seats (the front beam 6 of the front row of seats and the rear beam 7 of the front row of seats) adopt a sandwich connection structure, so that the sizes of different electric cores in the length direction of the vehicle body can be dealt with, a multi-opening-shaped lower vehicle body closed frame can be jointly formed, and the damage to the battery pack 8 under the working conditions of front collision, side collision and rear collision can be better dealt with, so that the safety of drivers and passengers can be protected.

In an embodiment, as shown in fig. 1, the front floor sealing plate 1 includes a sealing plate frame 101, a first mounting beam 102 and a second mounting beam 103, where the sealing plate frame 101 is a rectangular annular frame, the first mounting beam 102 and the second mounting beam 103 are respectively mounted on the sealing plate frame 101 along the width direction of the vehicle body, and the first mounting beam 102 is located on the front side of the second mounting beam 103 along the length direction of the vehicle body, so that the front floor sealing plate 1 is in a "mesh" structure as a whole, and the overall stability of the front floor sealing plate 1 is improved.

The front side of the sealing plate frame 101 is connected with the lower section 2 of the front beam of the front coaming, the rear side of the sealing plate frame 101 is connected with the lower beam 5 of the middle floor, the left side of the sealing plate frame 101 is connected with the left threshold inner plate 3, and the right side of the sealing plate frame 101 is connected with the right threshold inner plate 4, so that the connection between the front floor sealing plate 1 and each beam and each threshold is realized.

Specifically, the front seat front cross beam 6 is mounted on the first mounting cross beam 102, the front seat rear cross beam 7 is mounted on the second mounting cross beam 103, and the first mounting cross beam 102 and the second mounting cross beam 103 are respectively connected with the battery pack 8, so that a sandwich connection structure is formed at the front seat front cross beam and the rear cross beam to form a multi-opening lower vehicle body closed frame, damage to the battery pack 8 under the working conditions of front collision, side collision and rear collision is well handled, and safety of drivers and passengers is protected.

In one embodiment, as shown in fig. 1, the front floor sealing plate 1 is a one-piece sealing plate. Through making preceding floor shrouding 1 adopts the high rigidity and the high-strength structure of "integral type" shaping, the promotion that can be fine with the sealed precision of battery package 8, can promote the stability of whole shrouding frame simultaneously, guarantees the deformation in the transportation.

In one embodiment, as shown in fig. 2 and 3, the battery pack 8 includes a battery pack body 801 formed by a plurality of battery cells, and a first battery pack reinforcement beam 802 is disposed between any two adjacent battery cells.

The vehicle body structure further comprises a battery pack mounting supporting plate 9 and a first connecting piece 10, the battery pack mounting supporting plate 9 is arranged above the first mounting cross beam 102 along the height direction of the vehicle body, the first connecting piece 10 is connected between the battery pack mounting supporting plate 9, the first mounting cross beam 102 and the battery pack body 801, so that a sandwich connecting structure is formed between the battery pack mounting supporting plate 9, the first mounting cross beam 102 and the battery pack body 801, and stability is improved.

Further, the front seat front cross member 6 is mounted above the battery pack mounting stay 9 in the vehicle body height direction, so that the front seat front cross member 6 is mounted.

In one embodiment, as shown in fig. 2, the position of each first connecting member 10 along the length direction of the vehicle body corresponds to the position of the first battery pack reinforcement beam 802.

The first connecting piece 10 is connected between the battery pack mounting support plate 9 and the first mounting beam 102 and the battery pack body 801, and the front seat front beam 6 is mounted above the battery pack mounting support plate 9 along the height direction of the vehicle body, so that the whole middle part of the vehicle body forms a high-strength double-layer protection structure with the front seat front beam 6 on the upper side and the first battery pack reinforcing beam 802 on the lower side, and further collision impact transmitted by the passenger cabin and the battery pack from all directions is reinforced. Meanwhile, the battery pack 8 is used as a part of the vehicle body structure, the rigidity of the vehicle body is greatly improved, and the torsional rigidity is improved by nearly one time compared with that of the conventional vehicle body structure.

In an embodiment, as shown in fig. 2, the first connecting piece 10 includes a first threaded sleeve and a first bolt, the first threaded sleeve is mounted on the battery pack body 801, and the first bolt sequentially passes through the battery pack mounting support plate 9 and the first mounting beam 102 to be in threaded connection with the first threaded sleeve, so as to realize connection among the battery pack mounting support plate 9, the first mounting beam 102 and the battery pack body 801.

In one embodiment, as shown in fig. 2 to 5, the battery pack 8 further includes a second battery pack reinforcement beam 803 mounted on the battery pack body 801.

The vehicle body structure further includes a second connecting member 11, the second connecting member 11 being connected between the front seat rear cross member 7, the second mounting cross member 103, and the second battery pack reinforcement beam 803.

The second connecting piece 11 is connected between the front seat rear cross beam 7, the second mounting cross beam 103 and the second battery pack reinforcement beam 803, so that a high-strength double-layer protection structure of the front seat rear cross beam 7 at the upper side and the lower side of the second battery pack reinforcement beam 803 is formed in the middle of the whole vehicle body, and collision impact transmitted by the passenger cabin and the battery pack from all directions is further reinforced. Meanwhile, the battery pack 8 is used as a part of the vehicle body structure, the rigidity of the vehicle body is greatly improved, and the torsional rigidity is improved by nearly one time compared with that of the conventional vehicle body structure.

In one embodiment, as shown in fig. 5, the second connecting member 11 includes a second threaded sleeve 1101 and a second bolt 1102, the second threaded sleeve 1101 is mounted on the battery pack reinforcement beam 803, and the second bolt 1102 sequentially passes through the front seat rear cross member 7 and the second mounting cross member 103 to be in threaded connection with the second threaded sleeve 1101, so as to achieve connection among the front seat rear cross member 7, the second mounting cross member 103 and the second battery pack reinforcement beam 803.

In one embodiment, as shown in fig. 2 and 5, the middle part of the rear cross member 7 of the front seat is recessed along the longitudinal direction of the vehicle body, so that the cross section of the rear cross member 7 of the front seat is in an "M" shape. The second connecting piece 11 is connected to the front seat rear cross member 7 at a recessed position 7 a.

The front seat rear cross beam 7 is overlapped with the second mounting cross beam 103, and is of an M-shaped structure, so that two sealing requirements can be met, and a mounting point of the battery pack 8 and the seat cross beam can be provided.

In an embodiment, to avoid the second mounting beam 103 interfering with the installation of the battery pack 8, a position on the second mounting beam 103 corresponding to the battery pack reinforcement beam 803 protrudes upward to form an avoidance space for the battery pack reinforcement beam 803.

In an embodiment, as shown in fig. 3 and 4, the battery pack 8 further includes a first sealing strip 804 and a second sealing strip 805 disposed on the battery pack body 801, the front side of the second mounting beam 103 abuts against the first sealing strip 804, and the rear side of the second mounting beam 103 abuts against the second sealing strip 805.

Specifically, the front end of the front floor sealing plate 1 is lapped with the front end of the rear cross beam 7 of the front seat, the middle part (protruding position) of the front floor sealing plate 1 is lapped with the middle part (concave position 7 a) of the rear cross beam 7 of the front seat, the rear end of the front floor sealing plate 1 is lapped with the rear end of the rear cross beam 7 of the front seat, the position between the front end and the middle part on the front floor sealing plate 1 is a first sealing surface, the position between the rear end and the middle part on the front floor sealing plate 1 is a second sealing surface, and the first sealing surface and the second sealing surface are respectively lapped with the first sealing strip 804 and the second sealing strip 805 so as to adopt a double sealing structure, ensure the compression amount and simultaneously ensure the sealing of a cabin.

In an embodiment, as shown in fig. 1, the vehicle body structure further includes a left rear longitudinal beam front section 12 and a right rear longitudinal beam front section 13, the left end of the under-floor cross member 5 is connected to the left rear longitudinal beam front section 12, and the right end of the under-floor cross member 5 is connected to the right rear longitudinal beam front section 13, so that the structure of the rear portion of the vehicle body structure is more stable.

In an embodiment, as shown in fig. 6, the left rocker inner panel 3 includes a first vertical plate 301 and a first horizontal plate 302, the right end of the first horizontal plate 302 is connected to the lower end of the first vertical plate 301, and the first horizontal plate 302 is connected to the battery pack 8, so as to connect the left rocker inner panel 3 to the battery pack 8.

The right threshold inner plate 4 comprises a second longitudinal plate and a second transverse plate, the left end of the second transverse plate is connected with the lower end of the second longitudinal plate, and the second transverse plate is connected with the battery pack 8 to realize connection of the right threshold inner plate 4 and the battery pack 8.

The vehicle body structure further includes a first seat cross member connection plate 14 and a second seat cross member connection plate, the first seat cross member connection plate 14 is connected between the upper end of the first vertical plate 301 and the left end of the front seat rear cross member 7, and the second seat cross member connection plate is connected between the upper end of the second vertical plate and the right end of the front seat rear cross member 7.

The left end of the front seat rear cross beam 7 is lapped with the left threshold inner plate 3 through the first seat cross beam connecting plate 14, and the front floor sealing plate 1 is lapped with the left threshold inner plate 3, so that a cavity can be formed between the left threshold inner plate 3, the front seat rear cross beam 7 and the front floor sealing plate 1, and the front seat rear cross beam 7 is close to the left threshold inner plate 3 and directly bears the force of the collision of the left side part. Similarly, the right end of the front seat rear cross beam 7 is lapped with the right threshold inner plate 4 through the second seat cross beam connecting plate, and the front floor sealing plate 1 is lapped with the right threshold inner plate 4, so that a cavity can be formed between the right threshold inner plate 4, the front seat rear cross beam 7 and the front floor sealing plate 1, and the front seat rear cross beam 7 is close to the right threshold inner plate 3 and can directly bear the force of the collision of the left side part.

In the width direction of the vehicle body, the left and right ends of the front seat rear cross beam 7 can be close to two side sills as much as possible, so that the front seat rear cross beam 7 is contacted firstly in the side collision process, and force is transferred by the front seat rear cross beam 7.

In one embodiment, as shown in fig. 6, the upper end of the first vertical plate 301 is disposed at 90 ° with respect to the plane of the front floor sealing plate 1.

The upper end of the second longitudinal plate is arranged at 90 degrees with the plane of the front floor sealing plate 1.

The height of different battery packs 8 can be met by adopting 90-degree arrangement, and the die cost is saved.

In one embodiment, as shown in fig. 6 and 7, in order to protect the battery pack 8, the left and right side sills must bear a larger collision force, and thus, the vehicle body structure further includes a left sill reinforcement beam 15 and a right sill reinforcement beam, the left sill reinforcement beam 15 is installed above the first transverse plate 302 and on the left side of the first longitudinal plate 301, and the right sill reinforcement beam is installed above the second transverse plate and on the right side of the second longitudinal plate.

The position of the highest point of the left threshold reinforcement beam 15 is flush with the highest surface of the rear cross beam 7 of the front seat.

The battery pack 8 is connected with each threshold inner plate and each threshold stiffening beam, the upper part of the threshold stiffening beam (preferably an aluminum profile) is overlapped with the front seat rear cross beam 7 in a flush way, so that the front seat rear cross beam 7 is more outward, and the threshold stiffening beam is stressed and absorbs energy firstly in the collision process, and then is supported by the front seat rear cross beam 7.

In an embodiment, as shown in fig. 6, the left edge of the first transverse plate 302 of the left rocker inner panel 3 may be bent downward to form a first longitudinal protection plate 303, and the right edge of the second transverse plate of the right rocker inner panel 4 may be bent downward to form a second longitudinal protection plate, so as to better protect the battery pack 8 during a collision.

In one embodiment, to protect the battery pack 8, the front portion of the left sill reinforcement beam 15 and the front portion of the right sill reinforcement beam also extend as far forward as possible, and the rear portion is close to the frame length of the battery pack 8, i.e., each of the interior of the respective sill is formed by a complete through-type reinforcement beam (sill reinforcement beam) structure. The bottom of each threshold stiffening beam can be provided with a mounting point so as to be directly connected with the corresponding threshold inner plate. Preferably, structural adhesive can be added between each threshold inner plate and the corresponding threshold reinforcing beam, so that the reliability of connection is ensured.

The vehicle provided by the embodiment of the utility model comprises the vehicle body structure provided by the embodiment.

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, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a vehicle body structure, its characterized in that includes preceding floor shrouding (1) and battery package (8), battery package (8) are in along the automobile body direction of height setting in the below of preceding floor shrouding (1), preceding floor shrouding (1) with battery package (8) are connected in order to form seal structure.

2. The vehicle body structure according to claim 1, wherein the front floor sealing plate (1) includes a sealing plate frame (101), a first mounting cross member (102), and a second mounting cross member (103), the sealing plate frame (101) being a rectangular annular frame, the first mounting cross member (102) and the second mounting cross member (103) being mounted on the sealing plate frame (101) in a vehicle body width direction, respectively, the first mounting cross member (102) being located on a front side of the second mounting cross member (103) in a vehicle body length direction;

the first mounting cross beam (102) and the second mounting cross beam (103) are respectively connected with the battery pack (8).

3. The vehicle body structure according to claim 2, wherein the battery pack (8) includes a battery pack body (801) composed of a plurality of battery cells, a first battery pack reinforcement beam (802) being provided between any adjacent two of the battery cells;

the vehicle body structure further comprises a battery pack mounting support plate (9) and a first connecting piece (10), wherein the battery pack mounting support plate (9) is arranged above the first mounting cross beam (102) along the height direction of the vehicle body, and the first connecting piece (10) is connected among the battery pack mounting support plate (9), the first mounting cross beam (102) and the battery pack body (801); the position of the first connecting piece (10) along the length direction of the vehicle body corresponds to the position of the first battery pack reinforcement beam (802).

4. A vehicle body structure according to claim 3, wherein the battery pack (8) further includes a second battery pack reinforcement beam (803) mounted on the battery pack body (801);

the vehicle body structure further includes a second connecting member (11), the second connecting member (11) being connected between the second mounting cross member (103) and the second battery pack reinforcement beam (803).

5. The vehicle body structure according to claim 4, characterized in that the battery pack (8) further includes a first seal strip (804) and a second seal strip (805) provided on the battery pack body (801), the front side of the second mounting cross member (103) being abutted against the first seal strip (804), the rear side of the second mounting cross member (103) being abutted against the second seal strip (805).

6. The vehicle body structure according to claim 2, characterized in that the front floor sealing plate (1) is an integral sealing plate.

7. The vehicle body structure according to claim 4, characterized in that the vehicle body structure further comprises a front seat front cross member (6) and a front seat rear cross member (7), the front seat front cross member (6) being mounted on the first mounting cross member (102), the front seat rear cross member (7) being mounted on the second mounting cross member (103).

8. The vehicle body structure according to claim 7, wherein the front seat rear cross member (7) is depressed in a middle portion in a vehicle body length direction so that a cross section of the front seat rear cross member (7) is "M" -shaped;

the second connecting piece (11) is connected with the rear cross beam (7) of the front seat, and the second connecting piece (11) is positioned at the concave position of the rear cross beam (7) of the front seat.

9. The vehicle body structure according to claim 7, further comprising a dash panel front cross member lower section (2), a left rocker inner panel (3), a right rocker inner panel (4), and a center floor lower cross member (5), wherein a front side of the front floor sealing plate (1) is joined to the dash panel front cross member lower section (2), a rear side of the front floor sealing plate (1) is joined to the center floor lower cross member (5), a left side of the front floor sealing plate (1) is joined to the left rocker inner panel (3), and a right side of the front floor sealing plate (1) is joined to the right rocker inner panel (4).

10. The vehicle body structure according to claim 9, further comprising a left rear side member front section (12) and a right rear side member front section (13), wherein a left end of the center underfloor cross member (5) and the left rear side member front section (12) are joined, and wherein a right end of the center underfloor cross member (5) is joined to the right rear side member front section (13).

11. The vehicle body structure according to claim 9, characterized in that the left rocker inner panel (3) includes a first vertical panel (301) and a first cross panel (302), a right end of the first cross panel (302) being joined to a lower end of the first vertical panel (301), the first cross panel (302) being joined to the battery pack (8);

the right threshold inner plate (4) comprises a second longitudinal plate and a second transverse plate, the left end of the second transverse plate is connected with the lower end of the second longitudinal plate, and the second transverse plate is connected with the battery pack (8);

the vehicle body structure further comprises a first seat beam connecting plate (14) and a second seat beam connecting plate, wherein the first seat beam connecting plate (14) is connected between the upper end of the first longitudinal plate (301) and the left end of the front seat rear beam (7), and the second seat beam connecting plate is connected between the upper end of the second longitudinal plate and the right end of the front seat rear beam (7).

12. The vehicle body structure according to claim 11, characterized in that the upper end of the first longitudinal plate (301) is disposed at 90 ° to the plane of the front floor closing plate (1);

the upper end of the second longitudinal plate is arranged at 90 degrees with the plane of the front floor sealing plate (1).

13. The vehicle body structure according to claim 11, characterized in that it further comprises a left rocker reinforcement beam (15) and a right rocker reinforcement beam, the left rocker reinforcement beam (15) being mounted above the first cross plate (302) and on the left side of the first longitudinal plate (301), the right rocker reinforcement beam being mounted above the second cross plate and on the right side of the second longitudinal plate;

the position of the highest point of the left threshold reinforcement beam (15) and the position of the highest point of the right threshold reinforcement beam are flush with the highest surface of the front seat rear cross beam (7).

14. A vehicle comprising the vehicle body structure according to any one of claims 1 to 13.