CN212401376U

CN212401376U - Automobile bottom plate structure and electric automobile

Info

Publication number: CN212401376U
Application number: CN202021089254.2U
Authority: CN
Inventors: 徐义博; 唐志坚; 郑颢; 李伟
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-01-26
Anticipated expiration: 2030-06-12

Abstract

The utility model belongs to the technical field of the automobile body, especially, relate to a car bottom plate structure and electric automobile. The automobile bottom plate structure comprises a threshold inner plate, a front floor, a front seat front cross beam, a front seat rear cross beam, a longitudinal beam assembly and a connecting plate assembly; the front floor is connected with the inner doorsill plate; the front seat front cross beam and the front seat rear cross beam are both connected with the upper surface of the front floor; the connecting plate assembly is connected between the longitudinal beam assembly and the inner sill plate; the longitudinal beam assembly and the connecting plate assembly are connected with the lower surface of the front floor. The utility model provides a connecting plate subassembly can absorb external side impact betterly, when making this car bottom plate structure have good side impact resistance ability, has still promoted the intensity and the rigidity of car bottom plate structure.

Description

Automobile bottom plate structure and electric automobile

Technical Field

The utility model belongs to the technical field of the automobile body part, especially, relate to a car bottom plate structure and electric automobile.

Background

With the continuous development of new energy automobiles, the requirement on the endurance mileage of a power battery is higher and higher, at present, the endurance mileage of the power battery is generally improved by increasing battery modules in a power battery pack, and the size of the power battery pack is larger and larger due to the increase of the battery modules. In addition, side collision is one of the most important and worst high-speed collision conditions for inspecting the safety of the electric automobile, and the larger-size power battery pack also puts higher requirements on the side collision performance of the automobile lower body, because when the automobile is subjected to side collision, the longitudinal beam assembly on the automobile bottom plate may extrude the power battery pack due to the side collision force, and the power battery pack may have safety accidents such as leakage, explosion and the like under the extrusion deformation condition.

In the prior art, an electric automobile with a steel automobile bottom plate is difficult to meet the installation requirements of a power battery pack with a larger size while meeting the space allowance of a passenger compartment in the automobile and the flatness of a rear row ground, and obviously, the side impact performance of the electric automobile can be reduced when the installation requirements of the power battery pack with the larger size cannot be met.

Disclosure of Invention

The utility model discloses can not satisfy the poor scheduling problem of performance is bumped to the side that power battery's installation demand leads to the car bottom plate among the prior art, provide a car bottom plate structure and electric automobile.

In view of the above technical problems, an embodiment of the present invention provides an automobile floor structure, including a doorsill inner panel, a front floor, a front seat front cross beam, a front seat rear cross beam, a longitudinal beam assembly, and a connecting plate assembly; the front floor is connected with the inner doorsill plate; the front seat front cross beam and the front seat rear cross beam are both connected with the upper surface of the front floor; the connecting plate assembly is connected between the longitudinal beam assembly and the inner sill plate; the power battery pack of the automobile is arranged on one side, far away from the connecting plate assembly, of the longitudinal beam assembly; the longitudinal beam assembly and the connecting plate assembly are connected with the lower surface of the front floor.

Optionally, the vehicle floor structure further includes a rocker bracket assembly fixedly connected to an end surface of the rocker inner panel away from the connecting plate assembly.

Optionally, the inner sill plate comprises an upper turning plate, a lower turning plate and a vertical plate perpendicular to a horizontal plane, the upper turning plate is connected to the top end of the vertical plate, and the lower turning plate is connected to the bottom end of the vertical plate; the front floor is fixedly connected to the upper turning plate.

Optionally, the rocker bracket assembly includes a first rocker bracket disposed opposite to the front seat cross member and a second rocker bracket disposed opposite to the front seat cross member.

Optionally, the first rocker bracket comprises a first mounting plate, a second mounting plate and a third mounting plate which are arranged on the vertical plate and connected in sequence; one ends, far away from the second mounting plate, of the first mounting plate and the third mounting plate are connected with the lower turning plate, and a first rigidity cavity used for reinforcing the rigidity of the first threshold support is formed among the first mounting plate, the second mounting plate, the third mounting plate and the lower turning plate.

Optionally, the second threshold bracket includes a fourth mounting plate, a fifth mounting plate, and a sixth mounting plate disposed on the riser and connected in sequence; the fourth mounting panel with the sixth mounting panel is kept away from the one end of fifth mounting panel is connected turn over the board down, just form between the fourth mounting panel, the fifth mounting panel, the sixth mounting panel and turn over the board down and be used for strengthening the second threshold support rigidity's second rigidity cavity.

Optionally, the connecting plate assembly includes a first connecting plate disposed opposite the front seat front cross member and a second connecting plate disposed opposite the front seat rear cross member.

Optionally, the first connecting plate comprises a first side plate, a second side plate and a third side plate which are connected in sequence; the two opposite sides of the first side plate, the second side plate and the third side plate are respectively connected with the longitudinal beam assembly and the vertical plate; one ends, far away from the second side plate, of the first side plate and the third side plate are connected with the front floor, and a third rigidity cavity used for reinforcing the rigidity of the first connecting plate is formed among the first side plate, the second side plate, the third side plate and the front floor.

Optionally, the second connecting plate includes a fourth side plate, a fifth side plate and a sixth side plate which are connected in sequence; the opposite two sides of the fourth side plate, the fifth side plate and the sixth side plate are respectively connected with the longitudinal beam assembly and the vertical plate; one ends, far away from the fifth side plate, of the fourth side plate and the sixth side plate are connected with the front floor, and a fourth rigidity cavity used for reinforcing the rigidity of the second connecting plate is formed among the fourth side plate, the fifth side plate, the sixth side plate and the front floor.

Optionally, the vehicle floor structure further comprises a center tunnel reinforcement plate attached to an upper surface of the front floor; the middle channel reinforcing plate is bent to form a first bending part and a second bending part; the first bending portion is intersected with the central point of the front seat front cross beam, and the second bending portion is intersected with the central point of the front seat rear cross beam.

Optionally, the front seat rear cross member comprises a rear cross member body and a rear cross member reinforcement plate; a first mounting groove with a first opening is formed in the rear cross beam body in a recessed mode; the rear cross beam reinforcing plate is sleeved in the first mounting groove; one end of the first opening, which is arranged on the rear cross beam body, is connected with the upper surface of the front floor.

Optionally, the front seat front cross member comprises a front cross member body and a front cross member reinforcement plate; a second mounting groove with a second opening is formed in the front cross beam body in a recessed mode; the front cross beam reinforcing plate is sleeved in the second mounting groove; one end of the second opening, which is arranged on the front cross beam body, is connected with the upper surface of the front floor.

In the utility model, the automobile bottom plate structure comprises a connecting plate component connected between the threshold inner plate and the longitudinal beam component, when the automobile is laterally collided, the connecting plate component plays a role of laterally transmitting the lateral collision force, namely, the threshold inner plate is extruded and deformed by the lateral collision, and the lateral collision force received by the threshold inner plate can be transmitted to structural members such as the front floor, the longitudinal beam component, the front seat front cross beam and the front seat rear cross beam through the connecting plate component, so that the damage of the lateral collision force to the automobile is reduced; the connecting plate assembly can absorb external side impact force, so that the residual energy of the external side impact force reaching the longitudinal beam assembly, the front seat front cross beam and the front seat rear cross beam is reduced, the deformation of the longitudinal beam assembly is smaller when an automobile is subjected to side impact, and the effect of protecting a power battery pack arranged on one side of the longitudinal beam assembly, which is far away from the connecting plate assembly, is achieved; the utility model discloses in, this car floor structure has better preventing the side and bumps the ability when, has still improved the intensity and the rigidity of this car floor structure.

The utility model also provides an electric automobile, including the power battery package and the car bottom plate structure.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of an automobile floor structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an automobile floor structure according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of an automobile floor structure according to another embodiment of the present invention.

The reference numerals in the specification are as follows:

1. a threshold inner plate; 11. a vertical plate; 12. an upper turning plate; 13. a lower turning plate; 2. a front floor; 3. a front seat front cross member; 31. a front cross member body; 4. a front seat rear cross member; 41. a rear cross member body; 5. a stringer assembly; 51. a front longitudinal beam rear panel; 52. a floor stringer; 6. a connection plate assembly; 61. a first connecting plate; 611. A first side plate; 612. a second side plate; 613. a third side plate; 614. a third stiffness cavity; 62. a second connecting plate; 621. a fourth side plate; 622. a fifth side plate; 623. a sixth side plate; 624. a fourth stiffness cavity; 7. a threshold bracket assembly; 71. a first threshold bracket; 711. a first mounting plate; 712. a second mounting plate; 713. a third mounting plate; 714. a first stiffness cavity; 72. a second threshold bracket; 721. a fourth mounting plate; 722. a fifth mounting plate; 723. a sixth mounting plate; 724. a second stiffness cavity; 8. a bracket is arranged behind the front seat; 9. a center channel reinforcing plate; 91. a first bending portion; 92. a second bending portion.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle", "top", "bottom", and the like, are used in an orientation or positional relationship indicated in the drawings only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present invention.

For convenience of explanation of the installation relationship between the vehicle floor structure and each structural member in the present invention, the X direction referred to in the present invention is the front-rear direction of the vehicle (i.e., the X direction shown in fig. 3), and the Y direction referred to in the present invention is the left-right direction of the vehicle (i.e., the Y direction shown in fig. 3); the Z direction referred to in the present invention is the up-down direction of the automobile (i.e., the direction perpendicular to both the X axis and the Y axis in fig. 3).

As shown in fig. 1 and 2, an embodiment of the present invention provides an automobile floor structure, which includes a rocker inner panel 1, a front floor 2, a front seat front cross beam 3, a front seat rear cross beam 4, a longitudinal beam assembly 5, and a connecting plate assembly 6; the front floor 2 is connected (for example, by welding or the like) to the rocker inner panel 1; the front seat front cross member 3 and the front seat rear cross member 4 are both connected (for example, by welding or the like) to the upper surface of the front floor 2; the connecting plate assembly 6 is connected (for example, by welding or the like) between the longitudinal beam assembly 5 and the rocker inner panel 1; a power battery pack (not shown) of the automobile is arranged (arranged in a spiral way and the like) on one side of the longitudinal beam assembly far away from the connecting plate assembly 6; the side member assembly 5 and the connecting plate assembly 6 are connected (e.g., by welding or the like) to the lower surface of the front floor panel 2. It can be understood that the sill inner panel 1, the front floor 2, the front seat front cross beam 3, the front seat rear cross beam 4 and the longitudinal beam assembly 5 form a main body structure of the lower vehicle body of the vehicle, and can play a role in supporting the vehicle frame and installing the lower structural member of the vehicle. Specifically, the longitudinal beam assembly 5, the rocker inner panel 1 and the assembly all extend in the X direction of the automobile, the front seat front cross beam 3 and the front seat rear cross beam 4 extend in the Y direction of the automobile, and the longitudinal beam assembly 5, the rocker inner panel 1, the front seat front cross beam 3 and the front seat rear cross beam 4 are all arranged on the front floor 2.

Further, at two ends of the front seat front cross beam 3, the front floor 2 and the longitudinal beam assembly 5 form a three-layer welded structure through welding, so that the rigidity of two ends of the front seat front cross beam 3 is improved, and the stability of the automobile floor structure is improved. As can be understood, the connecting plate assembly 6 is connected between the inner sill plate 1 and the longitudinal beam assembly 5 and is fixedly connected with the lower surface of the front floor 2, and the connecting plate assembly 6 plays a role of an energy absorption box, so the rigidity and the strength of the sill are enhanced by the design of the connecting plate assembly 6; and the number of the connecting plates of the connecting plate assembly 6 can be set according to the actual requirement of the automobile, and the more the number of the connecting plates is, the better the side impact prevention performance of the automobile is.

Preferably, the inner sill plate 1, the front seat front cross beam 3, the front seat rear cross beam 4 and the longitudinal beam assembly 5 are all made of hot-formed high-strength steel, and the structural members made of the hot-formed high-strength steel can absorb and protect structural members in the middle of the front floor 2 of the automobile in the side column collision process.

In the utility model, the automobile bottom plate structure comprises a connecting plate component 6 connected between the threshold inner plate 1 and the longitudinal beam component 5, when the automobile is laterally collided, the connecting plate component 6 plays a role of laterally transmitting the lateral collision force, namely, the threshold inner plate 1 is extruded and deformed by the lateral collision, the lateral collision force received by the threshold inner plate 1 can be transmitted to the front floor 2, the longitudinal beam component 5, the front seat front cross beam 3, the front seat rear cross beam 4 and other structural components through the connecting plate component 6, so that the damage of the lateral collision force to the automobile is reduced; and the connecting plate assembly 6 can play the effect of absorbing the external side impact force, so that the external side impact force reaches the longitudinal beam assembly 5, the front seat front cross beam 3 and the residual energy of the front seat rear cross beam 4 is reduced, so that when the automobile is subjected to side impact, the deformation of the longitudinal beam assembly 5 is small, and the effect of protecting the power battery pack arranged on one side, far away from the connecting plate assembly 6, of the longitudinal beam assembly 4 is achieved. The utility model discloses in, this car floor structure has better preventing the side and bumps the ability when, has still improved the intensity and the rigidity of this car floor structure.

In a utility model, as shown in fig. 1, the vehicle floor structure further includes a threshold bracket assembly 7 fixedly connected to the end surface of the connecting plate assembly 6 away from the threshold inner plate 1. It is understood that the rocker bracket assembly 7 is located on the outer side of the rocker inner panel 1; the number of the threshold supports in the threshold support component 7 can be set according to the actual requirements of the automobile, and the more the number of the threshold supports is, the better the side impact prevention performance of the automobile is. Specifically, when the automobile is subjected to side impact, the side impact is firstly transmitted to the doorsill inner plate 1 through the doorsill support assembly 7, and the doorsill support assembly 7 not only plays a role in transmitting the side impact, but also can reduce the residual energy transmitted to the doorsill inner plate 1 by the external side impact; therefore, the design of the threshold bracket component 7 plays a role in protecting the threshold inner plate 1 and the longitudinal beam component 5, and the side impact prevention performance of the automobile is further improved.

In a utility model, as shown in fig. 1, the inner sill panel 1 includes an upper turning plate 12, a lower turning plate 13 and a vertical plate 11 perpendicular to the horizontal plane, the upper turning plate 12 is connected to the top end of the vertical plate 11, and the lower turning plate 13 is connected to the bottom end of the vertical plate 11; the front floor 2 is fixedly connected to the upper turning plate 12. The upper turning plate 12, the lower turning plate 13 and the vertical plate 11 are of an integrally-bent structure, and the front floor 2 is arranged on the upper surface of the threshold inner plate 1, so that the distance between the front floor 2 and the ground is increased, the automobile is guaranteed to have better trafficability, meanwhile, enough installation space is reserved at the bottom of the front floor 2, a larger and wider power battery pack can be installed in the installation space, and the cruising mileage of the automobile provided with the power battery pack is further increased.

In a specific embodiment, in the embodiment of the invention, under the condition that the Z-direction cross section of the inner sill panel 1 is small, the front floor 2 is arranged on the vertical plate 11 which is higher than the inner sill panel 1, so that the power battery pack with the width of 1060mm and the height of 150mm can be arranged, the endurance mileage can reach over 500KM, and the ground clearance of the whole vehicle and the passenger trafficability are both good. Under the condition of improving the Z-direction cross section of the inner doorsill plate 1, the height of the power battery pack capable of being arranged is larger, the endurance is longer, and the method has great benefits for improving the endurance core competitiveness of the electric automobile.

In a practical application, as shown in fig. 1, the rocker bracket assembly 7 includes a first rocker bracket 71 disposed opposite to the front seat cross member 3 and a second rocker bracket 72 disposed opposite to the front seat cross member 4. Specifically, first threshold support 71 with front seat front beam 3 sets up relatively, just second threshold support 72 with front seat rear beam 4 sets up relatively to make the side impact pass through better first threshold support 71 transmit for front seat strong beam 3, simultaneously, make the side impact pass through better second threshold support 72 transmit for front seat strong beam 4. Through the structural design, the external side impact force can be transmitted to the front seat front cross beam 3 and the front seat rear cross beam 4 more effectively, so that the damage degree of the side impact force to the automobile bottom plate structure is reduced, and the transmission efficiency and the automobile safety of the automobile bottom plate structure are improved.

In a utility model, as shown in fig. 1, the first rocker leg 71 includes a first mounting plate 711, a second mounting plate 712, and a third mounting plate 713, which are disposed on the vertical plate 11 and connected in sequence; one ends of the first mounting plate 711 and the third mounting plate 713, which are far away from the second mounting plate 712, are connected to the lower turning plate 13, and a first rigidity cavity 714 for reinforcing the rigidity of the first rocker bracket 71 is formed among the first mounting plate 711, the second mounting plate 712, the third mounting plate 713 and the lower turning plate 13. It is understood that the first mounting plate 711, the second mounting plate 712, and the third mounting plate 713 are all provided with flanges and are connected to the vertical plate 11 through respective flanges, and the first mounting plate 711 and the third mounting plate 713 are also connected to the lower turning plate 13 through flanges. Further, when the automobile is subjected to side impact, the first rigidity cavity 714 can well absorb external side impact force, so that the residual energy is further reduced when the external side impact force reaches the inner doorsill plate 1, and therefore the design of the first rigidity cavity 714 enhances the rigidity of the first doorsill support 71 and further enhances the side impact prevention performance of the automobile.

Preferably, the first mounting plate 711 and the third mounting plate 713 are parallel to each other, and the first mounting plate 711 is vertically connected to the second mounting plate 712 and the lower turning plate 13; meanwhile, the first mounting plate 711, the second mounting plate 712, and the third mounting plate 713 are vertically connected to the riser 11. By the above-described connection relationship, the rigidity of the first rocker bracket 71 is further enhanced.

In a practical application, as shown in fig. 1, the second threshold bracket 72 includes a fourth mounting plate 721, a fifth mounting plate 722, and a sixth mounting plate 723, which are disposed on the vertical plate 11 and are connected in sequence; one ends of the fourth mounting plate 721 and the sixth mounting plate 723, which are away from the fifth mounting plate 722, are connected to the lower flap 13, and a second rigidity cavity 724 for reinforcing the rigidity of the second threshold bracket 72 is formed among the fourth mounting plate 721, the fifth mounting plate 722, the sixth mounting plate 723 and the lower flap 13. It can be understood that the fourth mounting plate 721, the fifth mounting plate 722 and the sixth mounting plate 723 are respectively provided with a flange, and are connected with the vertical plate 11 through respective flanges, and the fourth mounting plate 721 and the sixth mounting plate 723 are also connected with the lower turning plate 13 through flanges. Further, when the automobile is subjected to side collision, the second rigidity cavity 724 can well absorb external side collision force, so that the residual energy when the external side collision force reaches the threshold inner plate 1 is further reduced, and the design of the second rigidity cavity 724 enhances the rigidity of the second threshold bracket 72 and further enhances the side collision prevention performance of the automobile.

Preferably, the fourth mounting plate 721 and the sixth mounting plate 723 are parallel to each other, and the fourth mounting plate 721, the fifth mounting plate 722 and the lower turning plate 13 are vertically connected to each other; meanwhile, the fourth mounting plate 721, the fifth mounting plate 722 and the sixth mounting plate 723 are vertically connected to the vertical plate 11. The rigidity of the second rocker bracket 72 is further enhanced by the above-described connection relationship.

In one embodiment, as shown in fig. 2, the connecting plate assembly 6 includes a first connecting plate 61 disposed opposite to the front seat front cross member 3 and a second connecting plate 62 disposed opposite to the front seat rear cross member 4. Specifically, the first connecting plate 61 is disposed opposite to the front seat front cross member 3; the second connecting plate 62 is arranged opposite to the front seat rear cross member 4; so that the side impact is better transmitted to the front seat cross member 3 through the first connecting plate 61, and at the same time, the side impact is better transmitted to the front seat cross member 4 through the second connecting plate 62. Through the structural design, the external side impact force can be transmitted to the front seat front cross beam 3 and the front seat rear cross beam 4 more effectively, so that the damage degree of the side impact force to the automobile bottom plate structure is reduced, and the transmission efficiency and the automobile safety of the automobile bottom plate structure are improved.

In a practical application, as shown in fig. 2, the first connecting plate 61 includes a first side plate 611, a second side plate 612 and a third side plate 613 which are connected in sequence; the opposite sides of the first side plate 611, the second side plate 612 and the third side plate 613 are respectively connected with the longitudinal beam assembly 5 and the vertical plate 11; one ends of the first side plate 611 and the third side plate 613, which are far away from the second side plate 612, are connected to the front floor panel 2, and a third rigidity cavity 614 for reinforcing the rigidity of the first connecting plate 61 is formed among the first side plate 611, the second side plate 612, the third side plate 613 and the front floor panel 2. It can be understood that the first side plate 611, the second side plate 612 and the third side plate 613 are respectively provided with a flange, and are connected with the vertical plate 11 and the longitudinal beam assembly 5 through respective flanges, and the first side plate 611 and the third side plate 613 are connected with the front floor 2 through flanges. Further, when the automobile is subjected to side impact, the third rigidity cavity 614 can well absorb the external side impact force, so that the residual energy of the external side impact force reaching the longitudinal beam assembly 5 is further reduced, and the design of the third rigidity cavity 614 enhances the rigidity of the first connecting plate 61 and further enhances the side impact resistance of the automobile.

Preferably, the first side plate 611 and the third side plate 613 are parallel to each other, and the side plate 611 is vertically connected to both the second side plate 612 and the front floor 2; meanwhile, the first side plate 611, the second side plate 612, and the third side plate 613 are all vertically connected to the front floor 2. By the above-described connection relationship, the rigidity of the first connection plate 61 is further enhanced. In a practical application, as shown in fig. 2, the second connecting plate 62 includes a fourth side plate 621, a fifth side plate 622 and a sixth side plate 623 which are connected in sequence; the opposite two sides of the fourth side plate 621, the fifth side plate 622 and the sixth side plate 623 are respectively connected with the longitudinal beam assembly 5 and the vertical plate 11; one ends of the fourth side plate 621 and the sixth side plate 623, which are far away from the fifth side plate 622, are connected to the front floor 2, and a fourth rigidity cavity 624 for reinforcing the rigidity of the second connecting plate 62 is formed between the fourth side plate 621, the fifth side plate 622, the sixth side plate 623 and the front floor 2. It is understood that the fourth side panel 621, the fifth side panel 622 and the sixth side panel 623 are respectively provided with a flange and connected to the vertical panel 11 and the longitudinal beam assembly 5 through respective flanges, and the fourth side panel 621 and the sixth side panel 623 are connected to the front floor 2 through flanges. Further, when the automobile is subjected to side impact, the fourth stiffness cavity 624 can well absorb external side impact force, so that the residual energy of the external side impact force reaching the longitudinal beam assembly 5 is further reduced, and therefore, the design of the fourth stiffness cavity 624 enhances the stiffness of the second connecting plate 62 and further enhances the side impact resistance of the automobile.

Preferably, the fourth side panel 621 and the sixth side panel 623 are parallel to each other, and the fourth side panel 621 is vertically connected to the fifth side panel 622 and the front floor 2; meanwhile, the fourth side plate 621, the fifth side plate 622, and the sixth side plate 623 are all vertically connected to the front floor 2. The rigidity of the second connecting plate 62 is further enhanced by the above-described connection relationship.

In a utility model, as shown in fig. 1 and 3, the vehicle floor structure further includes a front seat rear mounting bracket 8 disposed opposite to the second connecting 62 plate; one end of the front seat rear mounting bracket 8 is connected with the doorsill inner plate 1, and the other end of the front seat rear mounting bracket 8 is connected with the front seat rear cross beam 4. It will be appreciated that the end of the front seat rear mounting bracket 8 remote from the front floor 2 may be used to mount a front row seat of a vehicle. The front seat rear mounting bracket 8 is mounted at two ends of the front seat rear cross beam 4, and two energy absorption boxes are arranged at two ends of the front seat rear mounting bracket 8, so that the rigidity and strength of the automobile bottom plate structure are further improved by the design of the front seat rear mounting bracket 8, and the force transmission efficiency of the automobile bottom plate structure and the safety of an automobile are also improved.

In a utility model, the front seat rear mounting bracket 8 is fixedly connected with the front seat rear cross beam 4 through screws; and the front seat rear mounting bracket 8 is welded with the threshold inner plate 1. Understandably, the front seat rear mounting bracket 8 is fixedly connected with the front seat rear cross beam 4 through screws, so that the problem that welding sight holes are formed in the front seat rear cross beam 4 is avoided, the integrity of the front seat rear cross beam 4 is ensured, the complete front seat rear cross beam 4 has higher energy absorption efficiency, and the safety of an automobile is further improved.

In a utility model, as shown in fig. 1 to 3, the vehicle floor structure further includes a center tunnel reinforcement plate 9 attached to an upper surface of the front floor 2; the middle channel reinforcing plate 9 is bent to form a first bending part 91 and a second bending part 92; the first bent portion 91 intersects with a center point of the front seat front cross member 3, and the second bent portion 92 intersects with a center point of the front seat rear cross member 4. As can be understood, the center tunnel reinforcement plate 9 is fixedly connected to the middle of the front floor 2 and extends in the X direction; and the first bending portion 91 and the front seat front cross beam 3 and the second bending portion 92 and the front seat rear cross beam 4 may be fixedly connected by welding. Furthermore, the design of the middle channel reinforcing plate 9 strengthens the strength and rigidity of the automobile floor structure, and simultaneously avoids the instability in the force transmission process caused by the existence of a long cantilever of the front seat front cross beam 3 and the front seat rear cross beam 4.

In a utility model, as shown in fig. 3, the front seat rear cross member 4 includes a rear cross member body 41 and a rear cross member reinforcing plate (not shown); a first mounting groove (not shown) with a first opening is formed on the rear cross beam body 41 in a recessed manner; the rear cross beam reinforcing plate is sleeved in the first mounting groove; one end of the rear cross beam body 41, which is provided with the first opening, is connected with the upper surface of the front floor 2. Preferably, a first rigidity space for reinforcing the rigidity of the front seat rear cross member 4 is formed between the rear cross member body 41 and the rear cross member reinforcing plate. It can be understood that the structural design of the rear seat cross member enhances the strength and rigidity of the front seat cross member 4, and improves the force transmission efficiency of the front seat cross member 3.

In an embodiment, as shown in fig. 3, the front seat front beam 3 includes a front beam body 31 and a front beam reinforcement plate (not shown); a second mounting groove (not shown) with a second opening is formed on the front cross beam body 31 in a recessed manner; the front cross beam reinforcing plate is sleeved in the second mounting groove; one end of the second opening on the front cross beam body 31 is connected with the upper surface of the front floor 2. Preferably, a second rigidity space for reinforcing the rigidity of the front seat front cross member 3 is formed between the front cross member body 31 and the front cross member reinforcing plate. Understandably, the structural design of the front seat cross member 3 enhances the strength and rigidity of the front seat cross member 3, and simultaneously improves the force transmission efficiency of the front seat cross member 4.

In one utility model, as shown in fig. 2, the longitudinal beam assembly 5 comprises a front longitudinal beam back plate 51 and a bottom plate longitudinal beam 52 which is lapped on the front longitudinal beam back plate 51 and is used for installing a power battery pack of an automobile; the bottom plate longitudinal beam 52 and the front longitudinal beam rear plate 51 are both fixedly connected with the lower surface of the front floor 2. It is to be understood that the front-side member rear plate 51 is located at the front end of the floor side member 52, and the side member assemblies 5 are two and located on both sides of the front floor panel 2. The design of the longitudinal beam assembly 5 mainly plays a role in supporting other structural components on the automobile.

An embodiment of the utility model provides an electric automobile still provides, including power battery package and the car bottom plate structure. Specifically, the power battery pack of the automobile is mounted on the side of the floor longitudinal beam 52 far away from the connecting plate assembly 6 and is located at the bottom of the front floor 2.

The utility model discloses in, the side impact of absorption car that car bottom plate structure can be fine is to installing fine protection is always used to the inboard power battery package of bottom plate longeron 52 to when having avoided electric automobile to take place the side and bumping, the harm of power battery package, and then improved electric automobile's security.

In one embodiment, the power battery pack is mounted to the mounting points of the floor stringers 52 by bolts. When a side pillar collision occurs, the outer doorsill plate (the outer doorsill plate is connected with one side, far away from the connecting assembly 6, of the inner doorsill plate 1) and the inner doorsill plate 1 are extruded and bent by the rigid column barrier, and the first doorsill support 71, the second doorsill support 72, the first connecting plate 61, the second connecting plate 62 and the front seat rear mounting support 8 also generate collapse energy absorption while lateral force transmission is achieved. The arrangement of sufficient energy absorbing elements (i.e., the first rocker bracket 71, the second rocker bracket 72, the first connecting plate 61, the second connecting plate 62, and the front seat mounting bracket) and the reservation of energy absorbing space ensure that, in the side pillar collision process, when the inner rocker plate 1 is bent after receiving collision force and collides with the bottom plate longitudinal beam 52 to which the power battery pack is fixed, the residual collision energy transmitted from the inner rocker plate 1 to the bottom plate longitudinal beam 52 to which the power battery pack is mounted is small. In addition, the front seat front cross beam 3, the front seat rear cross beam 4 and the front seat front cross beam 3 provide enough rigidity and a better transverse force transmission path for the whole automobile floor structure, and the floor longitudinal beam 52 is fixed by welding, so that the floor longitudinal beam 52 is prevented from being deformed greatly and extruded to a power battery pack in the side impact process. And the middle channel reinforcing plate 9 covers the front seat front cross beam 3 and the front seat rear cross beam 4, so that the instability of the two seat cross beams in transverse force transmission due to the existence of a longer cantilever is avoided. Therefore, the automobile bottom plate structure has better side collision prevention capacity and can effectively protect the power battery in the side collision working condition.

The above description is only an example of the car floor structure of the present invention, and should not be construed as limiting the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automobile bottom plate structure is characterized by comprising a threshold inner plate, a front floor, a front seat front cross beam, a front seat rear cross beam, a longitudinal beam assembly and a connecting plate assembly; the front floor is connected with the inner doorsill plate; the front seat front cross beam and the front seat rear cross beam are both connected with the upper surface of the front floor; the connecting plate assembly is connected between the longitudinal beam assembly and the inner sill plate; the power battery pack of the automobile is arranged on one side, far away from the connecting plate assembly, of the longitudinal beam assembly; the longitudinal beam assembly and the connecting plate assembly are connected with the lower surface of the front floor.

2. The vehicle floor structure according to claim 1, further comprising a rocker bracket assembly fixedly attached to an end surface of the rocker inner panel remote from the connecting plate assembly.

3. The vehicle floor structure according to claim 2, wherein the rocker inner panel includes an upper flap, a lower flap, and a riser perpendicular to a horizontal plane, the upper flap being connected to a top end of the riser, the lower flap being connected to a bottom end of the riser; the front floor is fixedly connected to the upper turning plate.

4. The vehicle floor structure according to claim 3, wherein the rocker bracket assembly includes a first rocker bracket disposed opposite the front seat cross member and a second rocker bracket disposed opposite the front seat cross member.

5. The vehicle floor structure according to claim 4, wherein the first rocker bracket includes a first mounting plate, a second mounting plate, and a third mounting plate that are provided on the riser and connected in sequence; one ends, far away from the second mounting plate, of the first mounting plate and the third mounting plate are connected with the lower turning plate, and a first rigidity cavity used for reinforcing the rigidity of the first threshold support is formed among the first mounting plate, the second mounting plate, the third mounting plate and the lower turning plate;

the second threshold support comprises a fourth mounting plate, a fifth mounting plate and a sixth mounting plate which are arranged on the vertical plate and connected in sequence; the fourth mounting panel with the sixth mounting panel is kept away from the one end of fifth mounting panel is connected turn over the board down, just form between the fourth mounting panel, the fifth mounting panel, the sixth mounting panel and turn over the board down and be used for strengthening the second threshold support rigidity's second rigidity cavity.

6. The vehicle floor structure according to claim 3, wherein the connection plate assembly includes a first connection plate disposed opposite the front-seat front cross member and a second connection plate disposed opposite the front-seat rear cross member.

7. The vehicle floor structure according to claim 6, wherein the first connecting plate includes a first side plate, a second side plate, and a third side plate connected in series; the two opposite sides of the first side plate, the second side plate and the third side plate are respectively connected with the longitudinal beam assembly and the vertical plate; one ends, far away from the second side plate, of the first side plate and the third side plate are connected with the front floor, and a third rigidity cavity used for reinforcing the rigidity of the first connecting plate is formed among the first side plate, the second side plate, the third side plate and the front floor;

the second connecting plate comprises a fourth side plate, a fifth side plate and a sixth side plate which are connected in sequence; the opposite two sides of the fourth side plate, the fifth side plate and the sixth side plate are respectively connected with the longitudinal beam assembly and the vertical plate; one ends, far away from the fifth side plate, of the fourth side plate and the sixth side plate are connected with the front floor, and a fourth rigidity cavity used for reinforcing the rigidity of the second connecting plate is formed among the fourth side plate, the fifth side plate, the sixth side plate and the front floor.

8. The vehicle floor structure according to claim 1, further comprising a center tunnel reinforcement plate attached to an upper surface of the front floor; the middle channel reinforcing plate is bent to form a first bending part and a second bending part; the first bending portion is intersected with the central point of the front seat front cross beam, and the second bending portion is intersected with the central point of the front seat rear cross beam.

9. The vehicle floor structure according to claim 1, wherein the front-seat rear cross member includes a rear cross member body and a rear cross member reinforcing plate; a first mounting groove with a first opening is formed in the rear cross beam body in a recessed mode; the rear cross beam reinforcing plate is sleeved in the first mounting groove; one end of the rear cross beam body, which is provided with the first opening, is connected with the upper surface of the front floor; and/or

The front seat front cross beam comprises a front cross beam body and a front cross beam reinforcing plate; a second mounting groove with a second opening is formed in the front cross beam body in a recessed mode; the front cross beam reinforcing plate is sleeved in the second mounting groove; one end of the second opening, which is arranged on the front cross beam body, is connected with the upper surface of the front floor.

10. An electric vehicle, characterized by comprising a power battery pack and the vehicle floor structure according to any one of claims 1 to 9.