Lower vehicle body and vehicle with same

Abstract

The utility model provides a lower vehicle body and a vehicle with the lower vehicle body, and the lower vehicle body comprises two front longitudinal beams which extend along the front-back direction and are arranged at intervals along the left-right direction; the two doorsill beams extend in the front-back direction and are arranged at intervals in the left-right direction, and the two doorsill beams are arranged on the rear sides of the two front longitudinal beams and connected with the two front longitudinal beams in a one-to-one correspondence mode; the front wall cross beam extends in the left-right direction, and the two ends of the front wall cross beam are connected with the two front longitudinal beams respectively; the front cross beam extends in the left-right direction, the two ends of the front cross beam are connected with the two threshold beams correspondingly, and the front cross beam is used for fixing the battery pack; wherein the front cross beam, the front wall cross beam, the front longitudinal beam and the doorsill beam are integrally formed. According to the lower vehicle body, the front cross beam, the front wall cross beam, the front longitudinal beam and the doorsill beam are integrally formed, the structural strength of the lower vehicle body can be improved, the safety performance of the vehicle can be effectively improved, meanwhile, the manufacturing site and equipment investment of a whole vehicle factory can be reduced, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle design and manufacturing technology, and in particular to a lower body and a vehicle having the same. Background Technology

[0002] The existing vehicle body has a large number of parts, which are generally assembled into a whole by welding together multiple parts. However, the dimensional chain of the welding is complex, and the quality of the welding plays a key role in the structural strength of the lower body. Therefore, the structural strength of the lower body cannot be effectively guaranteed due to the limitations of the welding quality, and thus the safety performance of the vehicle cannot be guaranteed. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a vehicle body that can effectively ensure vehicle safety performance and optimize and improve manufacturing efficiency.

[0004] This application also proposes a vehicle having the aforementioned underbody.

[0005] The vehicle body according to an embodiment of the present utility model includes: two front longitudinal beams, which extend in the front-rear direction and are spaced apart in the left-right direction; two sill beams, which extend in the front-rear direction and are spaced apart in the left-right direction, and are arranged on the rear side of the two front longitudinal beams and are respectively connected to the two front longitudinal beams; a front crossbeam, which extends in the left-right direction and is connected to the two front longitudinal beams at both ends; and a front crossbeam, which extends in the left-right direction and is connected to the two sill beams at both ends, and is used to fix the battery pack; wherein the front crossbeam, the front crossbeam, the front longitudinal beams and the sill beams are integrally formed.

[0006] According to the lower body of this utility model, the front crossbeam, front bulkhead crossbeam, front longitudinal beam and sill beam are integrally formed, which can improve the structural strength of the lower body, thereby effectively improving the safety performance of the vehicle, and at the same time, reducing production costs.

[0007] According to some embodiments of the present invention, the front crossbeam, the front bulkhead crossbeam, the front longitudinal beam and the sill beam are integrally die-cast, and / or, the front bulkhead crossbeam is located on the front side of the front crossbeam, and the front bulkhead crossbeam and the front crossbeam are arranged at intervals along the front-rear direction.

[0008] According to some embodiments of the present invention, at least one of the front crossbeam and the front crossbeam includes: a first plate, the first plate extending horizontally; a plurality of second plates, the upper end of the second plate being connected to the first plate, the lower end of the second plate extending vertically downward, and the plurality of second plates being arranged at intervals in the front-rear direction.

[0009] According to some embodiments of the present application, the lower vehicle body comprises: a rear cross beam arranged at the rear side of the front cross beam and extending in the left-right direction, two ends of the rear cross beam are connected with the two door sill beams respectively, and the rear cross beam is used for fixing the battery pack.

[0010] According to some optional embodiments of the present application, the lower vehicle body comprises: a rear seat cross beam extending in the left-right direction, the rear seat cross beam is used for fixing the seat of the vehicle, and two ends of the rear seat cross beam are connected with the two door sill beams respectively and are integrally formed with the door sill beams.

[0011] According to some optional embodiments of the present application, the lower vehicle body comprises: a connecting plate vertically extending, a lower end of the connecting plate is connected with the rear cross beam, and an upper end of the connecting plate is connected with the rear seat cross beam.

[0012] According to some embodiments of the present application, a lower side of the rear cross beam is provided with a plurality of first reinforcing plates, one end of the first reinforcing plate is connected with the rear cross beam, the other end of the first reinforcing plate extends downward in the vertical direction, and the plurality of first reinforcing plates are arranged in the front-rear direction at intervals.

[0013] According to some embodiments of the present application, a lower side of the rear seat cross beam is provided with at least one second reinforcing plate, one end of the second reinforcing plate is connected with the rear seat cross beam, the other end of the second reinforcing plate extends downward in the vertical direction, when the second reinforcing plate is a plurality of second reinforcing plates, the plurality of second reinforcing plates are arranged in the front-rear direction at intervals.

[0014] According to some embodiments of the present application, the lower vehicle body comprises: two outer side door sills, one of the outer side door sills is connected to one of the door sill beams on the corresponding side of the vehicle and close to the outer side of the vehicle, and the other outer side door sill is connected to the other door sill beam on the corresponding side of the vehicle and close to the outer side of the vehicle.

[0015] According to some optional embodiments of the present application, the outer side door sill is connected with the door sill beam through screwing.

[0016] According to some embodiments of the present application, the door sill beam comprises: a middle plate horizontally extending; a support plate connected to one end of the middle plate facing the outer side door sill, the door sill beam is connected with the outer side door sill through the support plate; and a third reinforcing plate vertically extending and connected to one side of the middle plate away from the support plate; wherein, in the vertical direction, both ends of the middle plate are connected to the middle regions of the support plate and the third reinforcing plate.

[0017] According to some embodiments of the utility model, the lower vehicle body comprises: rear longitudinal beams, the rear longitudinal beams extend along the front-rear direction, the number of rear longitudinal beams is two, the two rear longitudinal beams are arranged in the left-right direction, the rear longitudinal beams are arranged on the rear side of the rocker beams and correspond to and are connected with the rocker beams, and the rear longitudinal beams are integrally formed with the rocker beams.

[0018] According to some optional embodiments of the utility model, the rear longitudinal beam comprises: two first vertical plates, the first vertical plates extend vertically, and the two first vertical plates are arranged in the left-right direction; and a first horizontal plate, the first horizontal plate extends horizontally, and the two ends of the first horizontal plate are connected with the two first vertical plates respectively, and in the vertical direction, the two ends of the first horizontal plate are connected with the middle region of the first vertical plate.

[0019] According to some embodiments of the utility model, the lower vehicle body comprises: a rear suspension cross beam, the rear suspension cross beam extends along the left-right direction, and the two ends of the rear suspension cross beam are connected with the two rear longitudinal beams respectively, and the rear suspension cross beam is integrally formed with the rear longitudinal beams.

[0020] According to some embodiments of the utility model, the rear suspension cross beam comprises: a bottom plate, the bottom plate extends horizontally; and two side plates, one end of the side plate is connected with the bottom plate, the other end of the side plate extends upward in the vertical direction away from the bottom plate, and the two side plates are arranged in the front-rear direction.

[0021] According to the vehicle of the second aspect embodiment of the utility model, the lower vehicle body according to the first aspect of the utility model is comprised.

[0022] According to the vehicle of the utility model, by arranging the lower vehicle body of the first aspect embodiment, the front cross beam is integrally formed with the front wall cross beam, the front longitudinal beam and the rocker beam, the structural strength of the lower vehicle body can be improved, the safety performance of the vehicle can be effectively improved, and the production cost can be reduced.

[0023] According to some embodiments of the utility model, the vehicle comprises: a front anti-collision beam and a rear anti-collision beam, the front anti-collision beam extends along the left-right direction, the rear anti-collision beam extends along the left-right direction, the lower vehicle body comprises two front longitudinal beams and two rear longitudinal beams, and the two ends of the front anti-collision beam are connected with the two front longitudinal beams respectively, and the two ends of the rear anti-collision beam are connected with the two rear longitudinal beams respectively.

[0024] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic view of a vehicle according to an embodiment of the utility model from one angle;

[0026] Figure 2 yes Figure 1 A schematic diagram of the lower body shown;

[0027] Figure 3 yes Figure 2 A schematic diagram of a portion of the lower body structure shown;

[0028] Figure 4 It is along Figure 3 Sectional view of line AA in the middle;

[0029] Figure 5 yes Figure 4 A schematic diagram of the cross-section of the threshold beam shown;

[0030] Figure 6 yes Figure 3 A magnified view of a section at point B in the middle;

[0031] Figure 7 yes Figure 3 A magnified view of a section at point C;

[0032] Figure 8 It is along Figure 3 Sectional view of the DD line;

[0033] Figure 9 yes Figure 1 A schematic diagram of the vehicle from another angle.

[0034] Figure label:

[0035] 100. Lower body;

[0036] 10. Front longitudinal beam;

[0037] 20. Threshold beam; 21. Middle plate; 22. Support plate; 23. Third reinforcing plate;

[0038] 30. Front crossbeam; 31. First panel; 32. Second panel;

[0039] 40. Front crossbeam;

[0040] 51. Rear crossbeam; 511. First reinforcing plate; 52. Rear seat crossbeam; 521. Second reinforcing plate; 53. Connecting plate;

[0041] 60. Outer threshold;

[0042] 70. Rear longitudinal beam; 71. First vertical plate; 72. First horizontal plate;

[0043] 80. Rear suspended crossbeam;

[0044] 200. Front bumper beam;

[0045] 300. Rear bumper beam;

[0046] 400, Energy Absorption Box;

[0047] 1000, Vehicles. Detailed Implementation

[0048] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0049] The following is a reference appendix. Figures 1-9 Description of the lower body 100 according to an embodiment of the present utility model.

[0050] Reference Figure 1 , Figure 2 , Figure 3 and Figure 9 According to an embodiment of the present utility model, the lower body 100 includes: two front longitudinal beams 10, two door sill beams 20, a front crossbeam 30, and a front crossbeam 40.

[0051] Specifically, the two front longitudinal beams 10 are along the front-rear direction (e.g. Figure 1 Extending in the front-back direction (as shown) and along the left-right direction (e.g.) Figure 1 The two sill beams 20 are arranged at intervals in the left-right direction (as shown); the two sill beams 20 extend in the front-back direction and are arranged at intervals in the left-right direction, and the two sill beams 20 are arranged behind the two front longitudinal beams 10 (as shown). Figure 1 The front longitudinal beam 10 shown is located on the rear side and is connected to the two front longitudinal beams 10 one by one; the front crossbeam 30 extends in the left and right direction and is connected to the two front longitudinal beams 10 at both ends; the front crossbeam 40 extends in the left and right direction and is connected to the two sill beams 20 at both ends. The front crossbeam 40 is used to fix the battery pack; wherein, the front crossbeam 40, the front crossbeam 30, the front longitudinal beam 10 and the sill beam 20 are integrally formed.

[0052] Preferably, the one-piece molding can be carried out using processes such as hot stamping, hydroforming, composite material one-piece molding, and roll forming. Thus, the lower body 100 can select a reasonable one-piece molding form according to actual needs. At the same time, when the front crossbeam 30 and the front crossbeam 40 are close to each other, the front crossbeam 30 and the front crossbeam 40 can be a single structure.

[0053] For example, such as Figure 1 , Figure 2 and Figure 3As shown, the front longitudinal beam 10 extends in the front-rear direction, two front longitudinal beams 10 are arranged in the left-right direction at intervals, the rocker beam 20 extends in the front-rear direction, two rocker beams 20 are arranged in the left-right direction at intervals, the left front longitudinal beam 10 is connected to the front side of the left rocker beam 20, the right front longitudinal beam 10 is connected to the right side of the right rocker beam 20, the left end of the front wall transverse beam 30 is connected to the left front longitudinal beam 10, the right end of the front wall transverse beam 30 is connected to the right front longitudinal beam 10, the left end of the front transverse beam 40 is connected to the left rocker beam 20, and the right end of the front transverse beam 40 is connected to the right rocker beam 20.

[0054] The lower vehicle body 100 of the utility model, the front transverse beam 40 is integrally formed with the front wall transverse beam 30, the front longitudinal beam 10 and the rocker beam 20, can strengthen the overall stress performance of the lower vehicle body 100, thereby can improve the structural strength of the lower vehicle body 100, further can effectively promote the safety performance of the vehicle 1000, simultaneously, can facilitate the processing of the lower vehicle body 100, need not adopt the welding connection and so on connecting form to be connected at the connecting position of adjacent structure, thereby can save the production time of the lower vehicle body 100, save production technology, further can improve production efficiency, reduce production cost.

[0055] In addition, the front transverse beam 40 is integrally formed with the front wall transverse beam 30, the front longitudinal beam 10 and the rocker beam 20, and the front transverse beam 40 can bear the structure on the front floor and the middle channel, so there is no need to set the front floor longitudinal beam and the middle channel longitudinal beam, thereby can reduce the use of parts, further reduce the production cost.

[0056] The lower vehicle body 100 according to the embodiment of the utility model, the front transverse beam 40 is integrally formed with the front wall transverse beam 30, the front longitudinal beam 10 and the rocker beam 20, can improve the structural strength of the lower vehicle body 100, thereby can effectively promote the safety performance of the vehicle 1000, simultaneously, can reduce production cost.

[0057] According to some embodiments of the utility model, referring to Figure 3 and Figure 4 , the front transverse beam 40, the front wall transverse beam 30, the front longitudinal beam 10 and the rocker beam 20 are integrally die-cast. Thus, the production time and cost can be effectively reduced, material waste can also be reduced, and the structure of the lower vehicle body 100 using the die-casting process has better continuity, can bear higher load and pressure, thereby the durability and service life of the product can be enhanced.

[0058] According to some embodiments of the utility model, referring to Figure 2 and Figure 3 , the front wall transverse beam 30 is arranged at the front side of the front transverse beam 40 (such as the front side of the front transverse beam 40 shown in Figure 2 ), and the front wall transverse beam 30 and the front transverse beam 40 extend in the front-rear direction (such as the front-rear direction of the front transverse beam 40 shown in Figure 2The front crossbeams 30 and 40 are arranged at intervals (as shown in the front-rear direction). Therefore, the positions of the front crossbeams 30 and 40 are reasonable, facilitating the fixing of the battery pack to the front crossbeams 40, and also facilitating the fixing of the front panel of the vehicle 1000 by the front crossbeams 30.

[0059] Furthermore, such as Figure 2 and Figure 3 As shown, the front crossbeam 40 is located on the front side of the front crossbeam 40. When the vehicle 1000 is a short-range vehicle 1000, the battery pack is smaller in size, and the front end of the battery pack can be fixed on the front crossbeam 40. When the vehicle 1000 is a long-range vehicle 1000, the battery pack is larger in size, and the front end of the battery pack can be fixed between the front crossbeam 40 and the front crossbeam 30, thus ensuring that the battery pack has enough space for fixing.

[0060] According to some embodiments of this utility model, refer to Figure 3 and Figure 6 At least one of the front crossbeam 30 and the front crossbeam 40 includes: a first plate 31 and a plurality of second plates 32. That is, the front crossbeam 30 may include a first plate 31 and a plurality of second plates 32, or the front crossbeam may include a first plate 31 and a plurality of second plates 32, or both the front crossbeam 30 and the front crossbeam 40 may include a first plate 31 and a plurality of second plates 32. The number of second plates 32 may be two, three, four or more.

[0061] Specifically, the first plate 31 extends horizontally; the upper end of the second plate 32 (as shown in the image) Figure 6 The upper end of the second plate 32 shown is connected to the first plate 31, and the lower end of the second plate 32 (as shown) is connected to the first plate 31. Figure 6 The lower end of the second plate 32 shown extends vertically downwards, and multiple second plates 32 extend along the front-back direction (e.g., Figure 6 Arranged at intervals in the front-to-back direction (as shown).

[0062] By setting the first plate 31, the side of the lower body 100 facing the passenger compartment is a flat plane, which facilitates the installation of the passenger compartment floor and avoids protrusions on the passenger compartment floor, effectively ensuring the riding experience. At the same time, setting the second plate 32 can strengthen the structural strength of the front crossbeam 30 and the front crossbeam 40, effectively preventing damage to the front crossbeam 30 and the front crossbeam 40, thereby effectively ensuring the structural strength and service life of the lower body 100.

[0063] For example, such as Figure 3 and Figure 6As shown, the front cross beam 30 and the front cross beam 40 each include a first plate 31 and two second plates 32, taking the front cross beam 40 as an example, the first plate 31 extends horizontally, the upper end of the second plate 32 is connected to the lower side surface of the first plate 31, the lower end of the second plate 32 extends vertically downward, and the two second plates 32 are arranged in the front-rear direction.

[0064] According to some embodiments of the present application, referring to Figure 3 and Figure 7 , the lower vehicle body 100 includes: a rear cross beam 51, the rear cross beam 51 is arranged at the rear side of the front cross beam 40 (such as the rear side of the front cross beam 40 shown in Figure 1 ), and extends in the left-right direction, the two ends of the rear cross beam 51 (such as the left end and the right end of the rear cross beam 51 shown in Figure 3 ) are respectively connected to the two rocker beams 20, and the rear cross beam 51 is used for fixing the battery pack, and the rear cross beam 51 is integrally formed with the rocker beam 20.

[0065] In this way, the rear cross beam 51 can be fixed together with the front cross beam 40 to fix the battery pack in the front-rear direction, so as to effectively prevent the battery pack from being separated from the lower vehicle body 100, and meanwhile, the rear cross beam 51 and the front cross beam 40 have a certain installation space therebetween, so as to facilitate the installation of the battery pack. In addition, the rear cross beam 51 is integrally formed with the rocker beam 20, so as to increase the overall strength of the lower vehicle body 100, and thus the durability and service life of the lower vehicle body 100 can be effectively guaranteed.

[0066] For example, as shown in Figure 3 and Figure 7 , the rear cross beam 51 is arranged at the rear side of the front cross beam 40, the rear cross beam 51 extends in the left-right direction, the left end of the rear cross beam 51 is connected to the left rocker beam 20, and the right end of the rear cross beam 51 is connected to the right rocker beam 20.

[0067] According to some optional embodiments of the present application, referring to Figure 3 and Figure 7 , the lower vehicle body 100 includes: a rear seat cross beam 52, the rear seat cross beam 52 extends in the left-right direction (such as the left-right direction shown in Figure 3 ), the rear seat cross beam 52 is used for fixing the seat of the vehicle 1000, and the two ends of the rear seat cross beam 52 (such as the left end and the right end of the rear cross beam 51 shown in Figure 3 ) are respectively connected to the two rocker beams 20 and integrally formed with the rocker beams 20.

[0068] In this way, the rear cross beam 51 can provide a fixed position for the seat, so that the seat can be conveniently fixed, and meanwhile, the rear cross beam 51 is connected with the rocker 20 and integrally formed, so that the overall strength of the lower vehicle body 100 can be effectively improved, thereby further ensuring the durability and service life of the lower vehicle body 100. In addition, the rear seat cross beam 52 does not need to be fixed with the rocker 20, so that the assembly process can be reduced, and the processing efficiency of the lower vehicle body 100 can be effectively improved.

[0069] For example, as shown in Figure 3 and Figure 7 , the rear seat cross beam 52 extends in the left-right direction, the left end of the rear seat cross beam 52 is connected with the rocker 20 on the left side, and the right end of the rear seat cross beam 52 is connected with the rocker 20 on the right side.

[0070] According to some embodiments of the present application, referring to Figure 3 and Figure 7 , the lower vehicle body 100 comprises a connecting plate 53, the connecting plate 53 extends upward and downward, the lower end of the connecting plate 53 (such as the lower end of the connecting plate 53 shown in Figure 3 ) is connected with the rear cross beam 51, and the upper end of the connecting plate 53 (such as the upper end of the connecting plate 53 shown in Figure 3 ) is connected with the rear seat cross beam 52. Therefore, the connecting plate 53 can connect the rear cross beam 51 and the rear seat cross beam 52 into a whole, so that the overall structural strength of the rear cross beam 51 and the rear seat cross beam 52 can be effectively improved, and meanwhile, the structural continuity of the entire lower vehicle body 100 can be ensured, thereby ensuring the anti-impact performance of the lower vehicle body 100. In addition, the interior of the passenger compartment and the rear compartment of the vehicle 1000 can be isolated, so that the sealing performance of the passenger compartment can be ensured.

[0071] For example, as shown in Figure 3 and Figure 7 , the connecting plate 53 extends upward and downward, the upper end of the connecting plate 53 is connected with the front end of the rear seat cross beam 52, and the lower end of the connecting plate 53 is connected with the rear end of the rear cross beam 51, and the rear cross beam 51, the connecting plate 53 and the rear seat cross beam 52 form a Z-shaped structure.

[0072] According to some embodiments of the present application, referring to Figure 3 and Figure 7 , the lower side of the rear cross beam 51 (such as the lower side of the rear cross beam 51 shown in Figure 7 ) is provided with a plurality of first reinforcing plates 511, that is, the lower side of the rear cross beam 51 can be provided with two, three or four or more first reinforcing plates 511, one end of the first reinforcing plate 511 (such as the upper end of the first reinforcing plate 511 shown in Figure 7 ) is connected with the rear cross beam 51, and the other end of the first reinforcing plate 511 (such as the lower end of the first reinforcing plate 511 shown in Figure 7The lower end of the first reinforcing plate 511 shown extends vertically downwards, and multiple first reinforcing plates 511 extend along the front-back direction (e.g., the lower end of the first reinforcing plate 511). Figure 7 Arranged at intervals in the front-to-back direction (as shown).

[0073] In this way, setting the first reinforcing plate 511 can effectively increase the strength of the rear crossbeam 51, thereby ensuring the durability and service life of the rear crossbeam 51. At the same time, the reasonable setting position of the first reinforcing plate 511 can ensure that the area where the passenger compartment floor is installed on the lower body 100 is a plane. This can ensure that the passenger compartment floor can be installed normally while strengthening the structural strength of the rear crossbeam 51, and can also isolate the inner and outer areas of the passenger compartment, thereby ensuring the airtightness of the passenger compartment.

[0074] For example, such as Figure 3 and Figure 7 As shown, the lower surface of the rear crossbeam 51 is provided with two first reinforcing plates 511. The upper end of the first reinforcing plate 511 is connected to the rear crossbeam 51, and the lower end of the first reinforcing plate 511 extends vertically downward. The two first reinforcing plates 511 are arranged at intervals in the front-back direction.

[0075] According to some embodiments of this utility model, refer to Figure 3 and Figure 7 The lower side of the rear seat crossbeam 52 is provided with at least one second reinforcing plate 521. That is, the lower side of the rear seat crossbeam 52 may have one, two, three or more second reinforcing plates 521. One end of the second reinforcing plate 521 (e.g. Figure 7 The upper end of the second reinforcing plate 521 (as shown) is connected to the rear seat crossbeam 52, and the other end of the second reinforcing plate 521 (as shown) Figure 7 The lower end of the second reinforcing plate 521 shown extends vertically downward. When there are multiple second reinforcing plates 521, the multiple second reinforcing plates 521 are arranged at intervals in the front-back direction.

[0076] In this way, the second reinforcing plate 521 can strengthen the structural strength of the rear seat crossbeam 52, thereby effectively ensuring the service life of the rear seat crossbeam 52. At the same time, it can also bear the weight transmitted from the seat to the lower body 100, thereby effectively improving the load-bearing capacity of the rear seat crossbeam 52.

[0077] For example, such as Figure 3 and Figure 7 As shown, a second reinforcing plate 521 is provided on the lower side of the rear seat crossbeam 52. The upper end of the second reinforcing plate 521 is connected to the rear seat crossbeam 52, and the lower end of the second reinforcing plate 521 extends vertically downward.

[0078] According to some embodiments of this utility model, refer to Figure 3 and Figure 7The lower body 100 comprises two outer side sills 60, one of which is connected to one sill beam 20 on the side of the vehicle 1000, and the other of which is connected to the other sill beam 20 on the side of the vehicle 1000. That is, the two outer side sills 60 are arranged in one-to-one correspondence with the sill beams 20 and are connected to the outer sides of the sill beams 20 away from the vehicle 1000. Thus, the outer side sills 60 can strengthen the structural strength of the sill beams 20, effectively guarantee the service life of the sill beams 20, and at the same time, the outer side sills 60 can serve as the first layer of energy absorption structure, so that the external impact force is absorbed by the outer side sills 60 before being transmitted to the sill beams 20, thereby protecting the sill beams 20.

[0079] For example, as shown in Figure 3 and Figure 7 , the left side of the left sill beam 20 is provided with an outer side sill 60, and the right side of the right sill beam 20 is provided with an outer side sill 60. The outer side sill 60 extends in the front-rear direction, and the outer side sill 60 covers the sill beam 20 in the left-right direction.

[0080] According to some embodiments of the present application, referring to Figure 3 and Figure 8 , the outer side sill 60 is connected to the sill beam 20 by screwing. Thus, the screwing connection structure is simple and convenient to operate, thereby improving the efficiency of connecting the outer side sill 60 to the sill beam 20. Preferably, the outer side sill 60 is connected to the sill beam 20 by a hot melt self-tapping screw, and the hot melt self-tapping screw is arranged in two rows in the vertical direction. This screwing connection form is simple and efficient, thereby effectively guaranteeing the connection efficiency.

[0081] Further, the outer side sill 60 is extrusion formed. This form of outer side sill 60 is convenient to process and low in cost, and at the same time, can guarantee that the hot melt self-tapping screw can be penetrated, thereby guaranteeing that the outer side sill 60 can be connected to the sill beam 20. In addition, the outer side sill 60 and the sill beam 20 are connected by structural adhesive, thereby further guaranteeing the connection strength of the outer side sill 60 and the sill beam 20.

[0082] According to some embodiments of the present application, referring to Figure 3 , Figure 3 and Figure 3 , the sill beam 20 comprises a middle plate 21, a support plate 22 and a third reinforcing plate 23. Specifically, the middle plate 21 extends horizontally; the support plate 22 is connected to one end of the middle plate 21 away from the outer side sill 60, and the sill beam 20 is connected to the outer side sill 60 through the support plate 22; the third reinforcing plate 23 extends vertically, and the third reinforcing plate 23 is connected to one side of the middle plate 21 away from the support plate 22; wherein, in the vertical direction (as shown in the vertical direction), the two ends of the middle plate 21 (as shown in the vertical direction) are connected to the outer side sill 60 through the support plate 22, and the third reinforcing plate 23 is connected to the outer side sill 60 through the support plate 22. Figure 3 ​Figure 8 The left and right ends of the intermediate plate 21 are connected to the middle regions of the support plate 22 and the third reinforcing plate 23.

[0083] In this way, the support plate 22 can strengthen the overall strength of the rocker beam 20, effectively guarantee the impact resistance of the rocker beam 20, and at the same time, the support plate 22 can provide a connection position of the rocker beam 20 with the outer rocker 60, thereby facilitating the installation of the outer rocker 60 with the rocker beam 20, and in addition, the third reinforcing plate 23 can further strengthen the structural strength of the rocker beam 20, effectively guarantee the service life of the rocker beam 20.

[0084] In addition, the intermediate plate 21 is arranged at a reasonable position, thereby effectively reducing the distance from the intermediate plate 21 to the ends of the support plate 22 and the third reinforcing plate 23, and in turn effectively reducing the draw depth, reducing the requirements of the mold, improving the performance and convenience of the mold, and at the same time, optimizing the structural thickness at the connection position of the intermediate plate 21 with the support plate 22 and the third reinforcing plate 23, thereby making the thickness of the entire rocker beam 20 more balanced, and in turn guaranteeing the balance of the performance of the rocker beam 20.

[0085] For example, as shown in Figs. Figure 3 , Figure 8 and Figure 8 , taking the right rocker beam 20 as an example, the intermediate plate 21 extends horizontally, the support plate 22 is arranged at the right side of the intermediate plate 21, the support plate 22 is adapted to the lap joint structure of the outer rocker 60 to reduce the gap between the outer rocker 60 and the rocker beam 20, the third reinforcing plate 23 is arranged at the left side of the intermediate plate 21, the third reinforcing plate 23 is provided with a lap joint edge on the side facing the inside of the lower vehicle body 100, and the lap joint edge is used to fix the battery pack, thereby guaranteeing the fixing strength of the battery pack with the lower vehicle body 100, and the left rocker beam 20 and the right rocker beam 20 are arranged symmetrically in the left-right direction.

[0086] Preferably, in the vertical direction, the left and right ends of the intermediate plate 21 are connected to the 1 / 4-3 / 4 positions of the support plate 22 and the third reinforcing plate 23.

[0087] According to some embodiments of the present application, referring to Figs. Figure 8 and Figure 8 , the lower vehicle body 100 comprises: rear longitudinal beams 70, the rear longitudinal beams 70 extend along the front-rear direction (as shown in Fig. Figure 3 ), the number of the rear longitudinal beams 70 is two, the two rear longitudinal beams 70 are arranged in the left-right direction (as shown in Fig. Figure 8 ), the rear longitudinal beams 70 are arranged at the rear side of the rocker beam 20 (as shown in Fig. Figure 3 ), and correspond to and are connected with the rocker beam 20 one by one, and the rear longitudinal beams 70 are integrally formed with the rocker beam 20.

[0088] In this way, the rear longitudinal beam 70 can facilitate fixing the rear structure of the vehicle 1000 to the rear longitudinal beam 70, so as to ensure the integrity of the vehicle 1000, and meanwhile, the rear longitudinal beam 70 is arranged at a reasonable position, which can ensure the overall length of the lower vehicle body 100 in the front-rear direction and enhance the overall strength of the lower vehicle body 100, so as to effectively ensure the durability and service life of the lower vehicle body 100.

[0089] In addition, the rear longitudinal beam 70 is integrally formed with the rocker beam 20, and no assembly is required, so as to effectively improve the integration of the lower vehicle body 100 and ensure the production efficiency of the lower vehicle body 100.

[0090] For example, as shown in Figure 8 and Figure 2 , the rear longitudinal beam 70 extends in the front-rear direction, the front end of the left rear longitudinal beam 70 is connected to the rear end of the left rocker beam 20, and the front end of the right rear longitudinal beam 70 is connected to the rear end of the right rocker beam 20.

[0091] Further, the rear longitudinal beam 70, the rear seat transverse beam 52 and the rocker beam 20 are all vertically molded structures, so as to effectively prevent interference with the mold support column in the left-right direction, so as to ensure that the rear longitudinal beam 70, the rear seat transverse beam 52 and the rocker beam 20 can be normally processed.

[0092] According to some embodiments of the present application, referring to Figure 3 and Figure 2 , the rear longitudinal beam 70 comprises: two first vertical plates 71 and a first horizontal plate 72, the first vertical plate 71 vertically extends, and the two first vertical plates 71 are arranged in the left-right direction (such as the left-right direction shown in Figure 2 ) in a spaced manner; the first horizontal plate 72 extends in the left-right direction, and the two ends (such as the left end and the right end of the first horizontal plate 72 shown in Figure 2 ) of the first horizontal plate 72 are respectively connected to the two first vertical plates 71, and in the vertical direction (such as the vertical direction shown in Figure 3 ), the two ends of the first horizontal plate 72 are both connected to the middle region of the first vertical plate 71.

[0093] In this way, the first horizontal plate 72 and the two first vertical plates 71 can effectively ensure the structural strength of the rear longitudinal beam 70, so as to ensure the durability and service life of the rear longitudinal beam 70, and meanwhile, the first vertical plate 71 is arranged at a reasonable position, so as to facilitate connecting the rear longitudinal beam 70 to the adjacent structure through the two first vertical plates 71. In addition, the first horizontal plate 72 is arranged at a reasonable position, so as to effectively reduce the distance from the first horizontal plate 72 to the end of the first vertical plate 71, thereby effectively reducing the draw depth, reducing the requirement for the mold, improving the performance and convenience of the mold, and at the same time, the structural thickness at the connection position of the first horizontal plate 72 and the first vertical plate 71 can be optimized, so as to make the thickness of the entire rear longitudinal beam 70 more balanced, thereby ensuring the balance of the performance of the rear longitudinal beam 70.

[0094] For example, as shown in Figure 1 and Figure 2 , taking the left rear longitudinal beam 70 as an example, the first horizontal plate 72 extends left and right, and the two first vertical plates 71 are arranged in the left-right direction and are respectively connected to the left and right sides of the middle plate 21, and the right rear longitudinal beam 70 is arranged symmetrically with the left rear longitudinal beam 70 in the left-right direction. Preferably, in the vertical direction, the left and right ends of the first horizontal plate 72 are connected at the 1 / 4-3 / 4 position of the first vertical plate 71.

[0095] Further, as shown in Figure 3 and Figure 2 , a plurality of reinforcing members can be arranged between the first vertical plate 71 and the first horizontal plate 72, and the plurality of reinforcing members are arranged in the extension direction of the rear longitudinal beam 70, so as to strengthen the connection strength between the first vertical plate 71 and the first horizontal plate 72, and further to ensure the structural strength of the rear longitudinal beam 70.

[0096] According to some embodiments of the present application, referring to Figure 3 and Figure 3 , the lower vehicle body 100 comprises: a rear suspension cross beam 80, the rear suspension cross beam 80 extends in the left-right direction (as shown in Figure 3 , the left-right direction), and the two ends of the rear suspension cross beam 80 (as shown in Figure 2 , the left end and the right end of the rear suspension cross beam 80) are respectively connected to the two rear longitudinal beams 70, and the rear suspension cross beam 80 is integrally formed with the rear longitudinal beam 70.

[0097] In this way, the rear suspension cross beam 80 can provide a mounting position for the rear suspension system of the vehicle 1000, so as to facilitate the installation of the suspension system, and at the same time, the rear suspension cross beam 80 can effectively improve the structural strength of the lower vehicle body 100, and effectively ensure the durability and service life of the lower vehicle body 100. In addition, the rear suspension cross beam 80 is integrally formed with the rear longitudinal beam 70, and does not need to be assembled, so as to effectively improve the integration of the lower vehicle body 100, and also ensure the production efficiency of the lower vehicle body 100.

[0098] For example, as shown in Figure 3 and Figure 1 , the rear suspension cross beam 80 extends in the left-right direction, the left end of the rear suspension cross beam 80 is connected to the left rear longitudinal beam 70, and the right end of the rear suspension cross beam 80 is connected to the right rear longitudinal beam 70.

[0099] According to the vehicle 1000 of the second aspect of the present application, referring to Figure 2 , Figure 1 and Figure 1 , the lower vehicle body 100 of the first aspect of the present application is included.

[0100] According to some embodiments of the present application, referring to Figure 1 and Figure 1The rear suspension cross beam 80 comprises a bottom plate 81 and two side plates 82, the bottom plate 81 extends horizontally, one end (such as the lower end of the side plate shown in Figure 2 ) of the side plate 82 is connected with the bottom plate 81, the other end (such as the upper end of the side plate shown in ​ ) of the side plate 82 extends upward in the vertical direction away from the bottom plate 81, and the two side plates 82 are arranged in the front-rear direction. Therefore, by arranging the bottom plate 81 and the two side plates 82, the structural strength of the rear suspension cross beam 80 can be effectively ensured, so that damage to the rear suspension cross beam 80 can be effectively prevented.

[0101] For example, as shown in ​ and ​ , the bottom plate 81 extends horizontally, the side plate 82 extends vertically, the lower end of the side plate 82 is connected with the bottom plate 81, the upper end of the side plate 82 extends upward, and the two side plates 82 are arranged in the front-rear direction.

[0102] The vehicle 1000 according to the embodiment of the present application, by arranging the lower vehicle body 100 of the first aspect, the front cross beam 40 is integrally formed with the front wall cross beam 30, the front longitudinal beam 10 and the rocker beam 20, which can improve the structural strength of the lower vehicle body 100, thereby effectively improving the safety performance of the vehicle 1000, and at the same time, the production cost can be reduced.

[0103] According to some embodiments of the present application, referring to ​ and ​ , the lower vehicle body 100 comprises a front anti-collision beam 200 and a rear anti-collision beam 300, the front anti-collision beam 200 extends in the left-right direction (such as the left-right direction shown in ​ ), the rear anti-collision beam 300 extends in the left-right direction, the lower vehicle body 100 comprises two front longitudinal beams 10 and two rear longitudinal beams 70, two ends (such as the left end and the right end of the front anti-collision beam 200 shown in ​ ) of the front anti-collision beam 200 are respectively connected with the two front longitudinal beams 10, and two ends (such as the left end and the right end of the rear anti-collision beam 300 shown in ​ ) of the rear anti-collision beam 300 are respectively connected with the two rear longitudinal beams 70.

[0104] In this way, the front anti-collision beam 200, the two front longitudinal beams 10 and the front wall cross beam 30 form a first closed annular area, the front cross beam 40, the two ear rocker beams 20 and the rear cross beam 51 form a second closed annular area, and the rear seat cross beam 52, the rear longitudinal beam 70 and the rear anti-collision beam 300 form a third closed annular area, thereby effectively improving the structural strength of the lower vehicle body 100, and further ensuring the durability and service life of the lower vehicle body 100.

[0105] For example, as shown in ​ and ​As shown, the front anti-collision beam 200 extends along the left-right direction, the left end of the front anti-collision beam 200 is connected with the left front longitudinal beam 10, the right end of the front anti-collision beam 200 is connected with the right front longitudinal beam 10, the left end of the rear anti-collision beam 300 is connected with the left rear longitudinal beam 70, and the right end of the rear anti-collision beam 300 is connected with the right rear longitudinal beam 70.

[0106] Further, the energy absorption box 400 is arranged on the front anti-collision beam 200 and the rear anti-collision beam 300, which can absorb the impact energy when the vehicle is impacted, effectively improving the safety performance of the vehicle 1000, and the energy absorption box 400 can adjust the length of the lower vehicle body 100 in the front-rear direction, so that the lower vehicle body 100 can be adapted to various vehicle models.

[0107] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0108] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0109] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0110] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without mutual contradiction.

[0111] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A vehicle body (100), characterized in that, include: Two front longitudinal beams (10), the two front longitudinal beams (10) extend in the front-rear direction and are spaced apart in the left-right direction; Two threshold beams (20) are arranged at intervals along the front-to-back direction and along the left-to-right direction. The two threshold beams (20) are arranged on the rear side of the two front longitudinal beams (10) and are respectively connected to the two front longitudinal beams (10) one by one. A front crossbeam (30) extends in the left-right direction and is connected to two front longitudinal beams (10) at both ends; A front crossbeam (40) extends in the left-right direction and is connected to two sill beams (20) at both ends. The front crossbeam (40) is used to fix the battery pack. The front crossbeam (40), the front bulkhead crossbeam (30), the front longitudinal beam (10), and the sill beam (20) are integrally formed.

2. The lower body (100) according to claim 1, characterized in that, The front crossbeam (40), the front bulkhead crossbeam (30), the front longitudinal beam (10), and the sill beam (20) are integrally die-cast. And / or, the front crossbeam (30) is located on the front side of the front crossbeam (40), and the front crossbeam (30) and the front crossbeam (40) are arranged at intervals in the front-rear direction.

3. The lower body (100) according to claim 1, characterized in that, At least one of the front crossbeam (30) and the front crossbeam (40) includes: The first plate (31) extends back and forth; Multiple second plates (32) are provided, with the upper end of the second plate (32) connected to the first plate (31) and the lower end of the second plate (32) extending vertically downward. The multiple second plates (32) are arranged at intervals in the front-back direction.

4. The lower body (100) according to claim 1, characterized in that, include: The rear crossbeam (51) is arranged on the rear side of the front crossbeam (40) and extends in the left and right direction. The two ends of the rear crossbeam (51) are respectively connected to the two sill beams (20). The rear crossbeam (51) is used to fix the battery pack. The rear crossbeam (51) and the sill beams (20) are integrally formed.

5. The lower body (100) according to claim 4, characterized in that, include: The rear seat crossbeam (52) extends in the left and right direction and is used to fix the seat of the vehicle (1000). The two ends of the rear seat crossbeam (52) are respectively connected to the two sill beams (20) and are integrally formed with the sill beams (20).

6. The lower body (100) according to claim 5, characterized in that, include: A connecting plate (53) extends vertically, with its lower end connected to the rear crossbeam (51) and its upper end connected to the rear seat crossbeam (52).

7. The lower body (100) according to claim 5, characterized in that, The lower side of the rear crossbeam (51) is provided with a plurality of first reinforcing plates (511). One end of the first reinforcing plate (511) is connected to the rear crossbeam (51), and the other end of the first reinforcing plate (511) extends downward in the vertical direction. The plurality of first reinforcing plates (511) are arranged at intervals in the front-back direction.

8. The lower body (100) according to claim 5, characterized in that, At least one second reinforcing plate (521) is provided on the lower side of the rear seat crossbeam (52). One end of the second reinforcing plate (521) is connected to the rear seat crossbeam (52), and the other end of the second reinforcing plate (521) extends downward in the vertical direction. When there are multiple second reinforcing plates (521), the multiple second reinforcing plates (521) are arranged at intervals in the front-rear direction.

9. The lower body (100) according to claim 1, characterized in that, include: Two outer sills (60), one of which is connected to a sill beam (20) on its corresponding side near the outside of the vehicle (1000), and the other of which is connected to another sill beam (20) on its corresponding side near the outside of the vehicle (1000).

10. The lower body (100) according to claim 9, characterized in that, The outer threshold (60) is screwed to the threshold beam (20).

11. The lower body (100) according to claim 9, characterized in that, The threshold beam (20) includes: Intermediate plate (21), the intermediate plate (21) extends horizontally; A support plate (22) is connected to one end of the intermediate plate (21) facing the outer threshold (60), and the threshold beam (20) is connected to the outer threshold (60) through the support plate (22); The third reinforcing plate (23) extends vertically and is connected to the side of the intermediate plate (21) away from the support plate (22); In the vertical direction, both ends of the intermediate plate (21) are connected to the middle region of the support plate (22) and the third reinforcing plate (23).

12. The lower body (100) according to claim 1, characterized in that, include: The rear longitudinal beam (70) extends in the front-to-back direction. There are two rear longitudinal beams (70), which are arranged at intervals in the left-to-right direction. The rear longitudinal beams (70) are located on the rear side of the threshold beam (20) and correspond to and are connected to the threshold beam (20). The rear longitudinal beams (70) and the threshold beam (20) are integrally formed.

13. The lower body (100) according to claim 12, characterized in that, The rear longitudinal beam (70) includes: Two first vertical plates (71) extend vertically, and the two first vertical plates (71) are arranged at intervals in the left and right direction; The first horizontal plate (72) extends to the left and right, and the two ends of the first horizontal plate (72) are respectively connected to the two first vertical plates (71). In the vertical direction, the two ends of the first horizontal plate (72) are connected to the middle area of ​​the first vertical plate (71).

14. The lower body (100) according to claim 12, characterized in that, include: The rear suspension beam (80) extends in the left and right direction, and the two ends of the rear suspension beam (80) are respectively connected to the two rear longitudinal beams (70). The rear suspension beam (80) and the rear longitudinal beams (70) are integrally formed.

15. The lower body (100) according to claim 14, characterized in that, The rear suspension beam (80) includes: A base plate (81) that extends horizontally; Two side plates (82), one end of which is connected to the bottom plate (81), and the other end of which extends vertically upward away from the bottom plate (81). The two side plates (82) are arranged at intervals in the front-back direction.

16. A vehicle (1000), characterized in that, Includes the lower body (100) as described in any one of claims 1-15.

17. The vehicle (1000) according to claim 16, characterized in that, include: A front bumper beam (200) and a rear bumper beam (300), wherein the front bumper beam (200) extends in the left-right direction and the rear bumper beam (300) extends in the left-right direction. The lower body (100) includes two front longitudinal beams (10) and two rear longitudinal beams (70). The two ends of the front anti-collision beam (200) are respectively connected to the two front longitudinal beams (10), and the two ends of the rear anti-collision beam (300) are respectively connected to the two rear longitudinal beams (70).

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