Rear floor beam frame and assembly thereof, integrated structure and vehicle

Abstract

The present application discloses a rear floor beam frame and its assembly, integrated structure and vehicle. The rear floor beam frame is an integrated structural member, which includes a first crossbeam, a second crossbeam and two longitudinal beams, the first crossbeam and the second crossbeam are arranged at intervals, the two longitudinal beams are located at both ends of the second crossbeam and connect the first crossbeam and the second crossbeam, wherein the bottom wall of the first crossbeam is distributed with a plurality of mounting positions, the mounting positions are used to install a battery tray, and the first side wall of the first crossbeam and the battery tray constitute a part of the battery box. In the above manner, the rear floor beam frame provided by the present application can improve the installation accuracy between the rear floor beam frame and the battery tray, and reduce the splicing gap formed on the battery box, thereby effectively enhancing the sealing of the battery box.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle body frames, and in particular to a rear floor beam frame and its assembly, integrated structure and vehicle. Background Art

[0002] With the continuous development of new energy vehicles, many new technologies have been born, such as CTC battery pack body integration technology, which is developing in the direction of integration as a whole. At the same time, high integration also puts higher requirements on the precision of the whole vehicle.

[0003] The battery tray has no upper cover and is connected to the bottom of the body frame by bolts around the bottom to form a complete structure. Because the battery has high requirements on the sealing performance of the structure, the accuracy and consistency of the installation points on the body-in-white side are also required to be high. Summary of the invention

[0004] The present application mainly provides a rear floor beam frame and its assembly, integrated structure and vehicle to solve the problem that the installation accuracy of the battery tray when being installed on the vehicle body frame does not meet the requirements.

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is to provide a rear floor beam frame. The rear floor beam frame is an integrated structural member, including: a first cross beam; a second cross beam, which is spaced apart from the first cross beam; two longitudinal beams, which are located at both ends of the second cross beam and connect the first cross beam and the second cross beam; wherein the bottom wall of the first cross beam is distributed with a plurality of mounting positions, which are used to mount a battery tray, and the first side wall of the first cross beam and the battery tray constitute a part of the battery box.

[0006] In some embodiments, the bottom wall of the first cross beam is further provided with a plurality of load-bearing positions, and the load-bearing positions are used to connect the battery tray to support the weight of the battery tray.

[0007] In some embodiments, the installation position and the load-bearing position are both screw hole structures, and the hole diameter of the load-bearing position is larger than the hole diameter of the installation position.

[0008] In some embodiments, a plurality of the mounting positions are evenly distributed on the bottom wall of the first beam, and a plurality of the load-bearing positions are symmetrically arranged about the center line of the first beam.

[0009] In some embodiments, the bottom wall of the first cross beam is further provided with a first through hole, and the joint area between the second cross beam and the longitudinal beam is provided with a second through hole, and the first through hole and the second through hole are used for installing a rear subframe.

[0010] In some embodiments, a process notch is provided at a corner area where the longitudinal beam and the second side wall of the first transverse beam are connected, and a matching structure is provided at the process notch for connecting a reinforcing plate.

[0011] In order to solve the above technical problems, another technical solution adopted by the present application is to provide a rear floor beam frame assembly. The rear floor beam frame assembly includes: the above rear floor beam frame; two sets of energy absorption components, each including an extension beam and a rear anti-collision beam mounting plate, the extension beam is connected between the longitudinal beam and the rear anti-collision beam mounting plate, wherein the extension beam is provided with an energy absorption structure, and the energy absorption structure is used to absorb the impact transmitted from the rear anti-collision beam mounting plate.

[0012] In some embodiments, the bottom wall of the first crossbeam is further provided with a first through hole, the bottom wall of the first crossbeam is further provided with a first mounting bracket, the first mounting bracket is further provided with a first mounting hole, and the first mounting hole is arranged corresponding to the first through hole;

[0013] The first through hole and the first mounting hole are used to mount a connecting pipe at one end of the rear sub-frame, so that one end of the rear sub-frame is also abutted against the first mounting bracket.

[0014] In some embodiments, a beam frame front reinforcement plate is further provided on the side of the bottom wall of the first cross beam facing away from the first mounting bracket, the beam frame front reinforcement plate is connected between the first side wall and the second side wall of the first cross beam, and the connecting pipe at one end of the rear subframe is further connected to the beam frame front reinforcement plate.

[0015] In some embodiments, a second through hole is provided on the bottom wall of the longitudinal beam, a second mounting bracket is provided at the joint area between the longitudinal beam and the second cross beam, a second mounting hole is provided on the second mounting bracket, and the second mounting hole is provided corresponding to the second through hole;

[0016] The second through hole and the second mounting hole are used to mount the connecting pipe at the other end of the rear sub-frame, so that the other end of the rear sub-frame is also abutted against the second mounting bracket.

[0017] In some embodiments, a box-shaped reinforcement plate is further provided on the longitudinal beam, and the box-shaped reinforcement plate is located on a side of the bottom wall of the longitudinal beam away from the second mounting frame, and a connecting pipe at the other end of the rear subframe is further connected to the box-shaped reinforcement plate.

[0018] In some embodiments, the longitudinal beam is further provided with a plurality of support plates in the portion between the first cross beam and the second cross beam, and a rear suspension spring disk is further provided on the side of the bottom wall of the longitudinal beam facing away from the support plate, and one of the plurality of support plates is arranged corresponding to the rear suspension spring disk for supporting the rear suspension spring disk.

[0019] In some embodiments, the rear floor beam assembly further includes a seat belt fixing bracket connected between the first side wall and the second side wall of the first cross beam.

[0020] In order to solve the above technical problems, another technical solution adopted by the present application is to provide a rear floor beam frame integrated structure. The rear floor beam frame integrated structure includes: the rear floor beam frame assembly as described above; a battery tray connected to the installation position of the bottom wall of the first cross beam, and forming a part of the battery box with the first cross beam; a rear subframe connected to the bottom of the rear floor beam frame.

[0021] The beneficial effects of the present application are as follows: Different from the prior art, the present application discloses a rear floor beam frame and its assembly, integrated structure and vehicle. The rear floor beam frame adopts an integrated structure, and avoids the use of sheet metal splicing like the traditional beam frame, that is, the rear floor beam frame has no sheet metal splicing, which reduces the weight of the overlapped edge caused by splicing, and can also save the cost of welding and the use of sealants, and will not cause performance loss, so that the integrity of the rear floor beam frame is stronger, and the torsional performance of the vehicle can be effectively improved; and the integrated structure of the rear floor beam frame also reduces the accumulation of welding tolerances, so that the installation accuracy of the rear floor beam frame such as the battery tray and the rear subframe is good, and the first side wall of the first cross beam and the battery tray together constitute a part of the battery box, so that the battery tray can be connected with fewer parts, and the seamless structure of the first cross beam can be used to improve the sealing performance and strength performance of the formed battery box, reduce the splicing gap on the battery box, thereby strengthening the sealing of the battery box, and reducing the risk of the battery inside being corroded and affecting the performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0023] Figure 1 It is a structural schematic diagram of a rear floor beam frame integrated structure provided by the present application;

[0024] Figure 2 Yes Figure 1 A bottom-up structural schematic diagram of the rear floor beam frame integrated structure is shown;

[0025] Figure 3 Yes Figure 2 A schematic diagram of a top view of the rear floor beam frame assembly in the rear floor beam frame integrated structure shown;

[0026] Figure 4 Yes Figure 3 A side structural schematic diagram of the rear floor beam assembly shown;

[0027] Figure 5 Yes Figure 3 A schematic diagram of the structure of the rear floor beam frame in the rear floor beam frame assembly shown;

[0028] Figure 6 Yes Figure 2 An enlarged structural schematic diagram of area A in the rear floor beam frame integrated structure is shown;

[0029] Figure 7 Yes Figure 2 A schematic cross-sectional structure diagram of the rear floor beam frame integrated structure along a direction perpendicular to the first cross beam and the second cross beam;

[0030] Figure 8 Yes Figure 2 The cross-sectional structure schematic diagram of the rear floor beam frame integrated structure viewed from the BB direction is shown. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] The terms "first", "second", "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0033] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] The rear floor beam integrated structure 100 is an important component of the vehicle body structure, and is located at the rear of the vehicle body beam.

[0035] See also Figure 1 and Figure 2 , Figure 1 is a structural schematic diagram of a rear floor beam frame integrated structure provided by the present application, Figure 2 Yes Figure 1 The schematic diagram of the structure of the rear floor beam frame integrated structure viewed from above is shown.

[0036] The rear floor beam integrated structure 100 provided in the present application includes a rear floor beam assembly 101, a battery tray 102, a rear subframe 103, a rear suspension 104, a rear floor panel assembly 105 and a rear motor 106, wherein the battery tray 102 is connected to one end of the rear floor beam assembly 101, and is combined with one end of the rear floor beam assembly 101 to form a battery box body, which is used to load batteries, and the rear subframe 103, the rear suspension 104 and the rear motor 106 are all connected below the rear floor beam assembly 101, wherein the rear subframe 103 is adjacent to the battery tray 102, and a rear floor panel assembly 105 is also provided above the rear floor beam assembly 101 and is arranged on the rear floor beam assembly 101.

[0037] By integrating the rear floor beam assembly 101 and the battery tray 102 to form a battery box, the performance loss caused by the traditional split-part spot welding structure can be effectively reduced, and the parts splicing structure of the original battery box and the rear floor beam assembly 101 can be relatively reduced. The installation accuracy of the vehicle chassis parts can be greatly improved, and the various components on the vehicle chassis can be arranged more compactly, which can relatively save the vehicle chassis installation space.

[0038] See also Figure 3 and Figure 4 , Figure 3 Yes Figure 2 The schematic diagram of the top view of the rear floor beam frame assembly in the rear floor beam frame integrated structure shown in FIG. Figure 4 Yes Figure 3 A side structural schematic diagram of the rear floor beam assembly is shown.

[0039] Furthermore, the rear floor beam assembly 101 includes a rear floor beam 10 and two sets of energy absorbing components 20 , the battery tray 102 is specifically connected to one end of the rear floor beam 10 , and the two sets of energy absorbing components 20 are connected to one end of the rear floor beam 10 away from the battery tray 102 .

[0040] The rear floor beam 10 is provided with a variety of installation positions, which are respectively used to install the battery tray 102, the rear subframe 103, the rear suspension 104, the rear floor panel assembly 105 and the rear motor 106, and the rear floor beam 10 also constitutes a part of the vehicle frame structure; the energy absorption component 20 is used to absorb part of the impact energy generated by the collision at the rear of the vehicle body, thereby reducing the risk of damage to the vehicle body structure due to the impact.

[0041] The rear floor beam frame 10 is an integrated structural member, which may be an integrated hot-formed beam frame or an integrated cold-pressed beam frame, etc. In this embodiment, the rear floor beam frame 10 is an integrated hot-formed beam frame.

[0042] See also Figure 5 , Figure 5 Yes Figure 3 A schematic diagram of the structure of the rear floor beam frame in the rear floor beam frame assembly is shown.

[0043] The rear floor beam frame 10 includes a first cross beam 11, a second cross beam 12 and two longitudinal beams 13. The first cross beam 11 and the second cross beam 12 are arranged at intervals. The two longitudinal beams 13 are located at both ends of the second cross beam 12 and connect the first cross beam 11 and the second cross beam 12. Among them, a bottom wall 110 of the first cross beam 11 is distributed with a plurality of mounting positions 111, and the mounting positions 111 are used to install the battery tray 102. The first side wall 112 of the first cross beam 11 and the battery tray 102 constitute a part of the battery box, so that the integrated structure of the first cross beam 11 reduces the overlap of parts and improves the overall sealing performance.

[0044] Combined with reference Figure 4 The outer side of the longitudinal beam 13 is an arc-shaped structure, and its height gradually changes from the rear to the front. The arc-shaped structure provides space for the tire envelope. In the front part of the longitudinal beam 13 near the outer area, the trimming height of the parts is reduced, so that the overall molding depth of the rear floor beam frame 10 is in a uniform state, which is convenient for manufacturing.

[0045] The rear floor beam 10 adopts an integrated structure, and avoids the use of sheet metal splicing like traditional beams. That is, the rear floor beam 10 has no sheet metal splicing, which reduces the weight of the overlapping edges caused by splicing, saves the cost of welding and the use of sealants, and does not cause performance loss, so that the integrity of the rear floor beam 10 is stronger and can effectively improve the torsional performance of the vehicle; and the integrated structure of the rear floor beam 10 also reduces the accumulation of welding tolerances, so that the battery tray 102, the rear subframe 103, the rear suspension 104, the rear floor panel assembly 105 and the rear motor 106 and the rear floor beam 10 have good installation accuracy.

[0046] The rear floor beam frame 10 is an integrated structural member, that is, the first cross beam 11 is also an integrated beam frame structure, so the seamless structure of the first cross beam 11 can be used to improve the sealing performance and strength performance of the battery box.

[0047] Combined with reference Figure 6 , Figure 6 Yes Figure 2 An enlarged structural schematic diagram of area A in the rear floor beam frame integrated structure is shown.

[0048] The mounting position 111 may be a screw hole, a through hole or a stud, and the side of the battery tray 102 is connected to the mounting position 111, wherein the mounting position 111 and the side of the battery tray 102 may form a sealing structure by gluing or other methods to ensure the sealing of the battery box.

[0049] In this embodiment, the first cross beam 11 has a U-shaped structure on the side facing the battery tray 102, that is, the first side wall 112 has a U-shaped structure, so as to be integrated with the battery tray 102, so that the first side wall 112 is the rear sealing surface of the battery tray 102, and the battery tray 102 is installed below the first cross beam 11 through the mounting position 111, and the battery tray 102 opens upward to receive the battery 107, and the first side wall 112 of the first cross beam 11 extends toward the front of the vehicle body structure and is connected to the battery tray 102 to form a part of the battery box that wraps the battery, so that the first cross beam 11 is both the vehicle body structure and the side wall structure of the battery box, and the integrated structure of the first cross beam 11 can be used to improve the strength and sealing function of the battery box.

[0050] The bottom wall 110 of the first cross beam 11 is further provided with a plurality of load-bearing positions 113 . The load-bearing positions 113 are used to connect the battery tray 102 to support the weight of the battery tray 102 .

[0051] The load-bearing position 113 can also be a structure such as a screw hole, a through hole or a stud. The load-bearing position 113 is mainly used to bear the weight of the battery tray 102 and the battery 107; and the installation position 111 is connected to the battery tray 102, mainly used to provide the connection relationship required for sealing, to avoid the sealing structure between the battery tray 102 and the bottom wall 110 of the first beam 11 from being easily damaged.

[0052] The mounting positions 111 and the load-bearing positions 113 may also be welded structures or screwed structures. A plurality of mounting positions 111 are evenly distributed on the bottom wall of the first beam 11 , and a plurality of load-bearing positions 113 are symmetrically arranged about the center line of the first beam 11 .

[0053] In this embodiment, the mounting position 111 and the load-bearing position 113 are both screw hole structures, the number of the load-bearing positions 113 is less than the number of the mounting positions 111, and the hole diameter of the load-bearing position 113 is larger than the hole diameter of the mounting position 111, so that the load-bearing position 113 is mainly used for bearing weight, so as to reduce the adverse effects of the dead weight of the battery tray 102 and the battery 107 on the sealing structure formed between the bottom wall 110.

[0054] Specifically, the mounting positions 111 are M6 nut holes, and the load-bearing positions are M10 nut holes. The mounting positions 111 are evenly arranged on the bottom wall 110 of the first beam 11, and the mounting positions 111 are fixedly connected to the battery tray 102 by bolts. In some mounting positions 111 facing the outside of the second beam 12, the bottom wall 110 is symmetrical about the center line of the first beam 11 and has a total of 4 load-bearing positions. The mounting positions 111 and the load-bearing positions 113 are connected to the battery tray 102 at the same time, so that the battery tray 102 can be stably and firmly installed on the first beam 11, and there is no need to worry about the first beam 11 being separated from the battery tray 102 due to uneven load-bearing.

[0055] In other embodiments, the installation position 111 and the load-bearing position 113 may be nut holes of other specifications, which are not specifically limited in the present application.

[0056] It can be seen that the battery tray 102 is relatively arranged below the first cross beam 11, that is, the edge of the battery tray 102 is connected to the bottom wall 110 of the first cross beam 11, so that the first side wall 112 is located above the battery tray 102, so that the first side wall 112 is used to limit the space in the thickness direction of the battery box. The first side wall 112 can be fully utilized as the boundary of the battery box, so that the integrated structure of the battery tray 102 and the rear floor beam frame 10 is more compact, and the space below the rear floor beam frame 10 can be fully utilized to form a space for accommodating batteries.

[0057] like Figure 3 and Figure 5As shown, a process notch 115 is provided at the corner area where the longitudinal beam 13 and the second side wall 114 of the first cross beam 11 are connected, and a matching structure is provided at the process notch 115 for connecting a reinforcing plate 116. In this embodiment, the reinforcing plate 116 is an arc-shaped plate.

[0058] like Figure 5 As shown, the first side wall 112 and the second side wall 114 are two side walls opposite to the first cross beam 11, and the rear suspension 104 and the rear motor 106 are arranged in the area between the first cross beam 11 and the second cross beam 12. Therefore, a process notch 115 is provided in the corner area to facilitate the installation of the rear suspension 104 and the rear motor 106, and it is not easy to set a large rounded transition in the transition area between the longitudinal beam 13 and the first cross beam 11. By connecting the reinforcing plate 116 at the process notch 115, the forming performance of the rear floor beam frame 10 is improved.

[0059] Specifically, a matching structure is provided at the process notch 115 , and the matching structure may be a flange or a step structure, so as to improve the matching installation accuracy between the reinforcing plate 116 and the process notch 115 .

[0060] like Figure 5 As shown, the rear floor beam assembly 101 also includes a seat belt fixing bracket 14, which is connected between the first side wall 112 and the second side wall 114 of the first cross beam 11 and is located in the middle area of ​​the first cross beam 11, so as to facilitate the connection of the seat belt fixing bracket 14 to the rear floor beam 10. On the one hand, it can provide a fixing point for the seat belt, and on the other hand, it can support the first cross beam 11 to enhance the rigidity of the first cross beam 11.

[0061] The two ends of the second cross beam 12 are roughly connected to the middle position of the longitudinal beam 13, so as to form a U-shaped structure at one end of the rear floor beam frame 10, and two groups of energy absorbing components 20 are respectively connected to the two longitudinal beams 13, wherein the energy absorbing components 20 include an extension beam 21 and a rear anti-collision beam mounting plate 22, the extension beam 21 is connected to the corresponding longitudinal beam 13, and the rear anti-collision beam mounting plate 22 is connected to the end of the extension beam 21 away from the rear floor beam frame 10.

[0062] like Figure 4 As shown, the rear anti-collision beam mounting plate 22 is used to connect with the rear anti-collision beam, and an energy-absorbing structure 211 is provided on the extension beam 21. The extension beam 21 can deform and absorb energy during a collision. The energy-absorbing structure 211 is used to absorb the impact transmitted from the rear anti-collision beam mounting plate 22 to mitigate the impact caused by the collision of the rear anti-collision beam, thereby protecting the vehicle and reducing the degree of damage to the vehicle.

[0063] In this embodiment, four convex welded bolts are provided on one side of the rear anti-collision beam mounting plate 22, which provide mounting points for the rear anti-collision beam, making the installation with the anti-collision beam more solid and reliable; the energy-absorbing structure 211 is a collapse rib arranged on the extension beam 21, and the collapse rib is arranged vertically. When the rear anti-collision beam is hit, the collapse rib can deform to the maximum extent to absorb the energy of the impact.

[0064] In other embodiments, the energy absorbing structure 211 may be arranged at a certain angle to the horizontal direction, and the energy absorbing structure 211 may also be made of other energy absorbing materials, which is not specifically limited in the present application.

[0065] Continue reading Figure 7 and Figure 8 , Figure 7 Yes Figure 2 The schematic cross-sectional structure diagram of the rear floor beam frame integrated structure is shown along a direction perpendicular to the first cross beam and the second cross beam. Figure 8 Yes Figure 2 The cross-sectional structure schematic diagram of the rear floor beam frame integrated structure viewed from the BB direction is shown.

[0066] like Figure 7 and Figure 8 As shown, the bottom wall 110 of the first cross beam 11 is further provided with a first mounting bracket 15, and the two longitudinal beams 13 are both provided with a second mounting bracket 16. The first mounting bracket 15 and the second mounting bracket 16 are both used to install the rear sub-frame 103. The rear sub-frame 103 and the first mounting bracket 15 and the second mounting bracket 16 can be connected to each other by welding or screwing. In this embodiment, the first mounting bracket 15 and the second mounting bracket 16 are connected to the rear sub-frame 103 by screwing.

[0067] In this embodiment, a first mounting bracket 15 is symmetrically provided below the joint area between the first cross beam 11 and the longitudinal beam 13, and a second mounting bracket 16 is provided below the joint area between the second cross beam 12 and the longitudinal beam 13, so that the rear subframe 103 can be arranged close to the battery tray 102, and the overall structure is compact.

[0068] In other embodiments, the second mounting bracket 16 may be located at any position of the longitudinal beam 13 .

[0069] Specifically, Figure 8As shown, the bottom wall 110 of the first cross beam 11 is further provided with a first through hole 117, the longitudinal beam 13 is provided with a second through hole 132, the first mounting bracket 15 is further provided with a first mounting hole 151, and the second mounting bracket 16 is further provided with a second mounting hole (not shown), the first mounting hole 151 is arranged corresponding to the first through hole 117, and the second mounting hole is arranged corresponding to the second through hole 132; wherein, the first through hole 117 and the first mounting hole 151 are used to install the connecting pipe 108 at one end of the rear sub-frame 103, so that one end of the rear sub-frame 103 is also abutted against the first mounting bracket 15; the second through hole 132 and the second mounting hole are used to install the connecting pipe at the other end of the rear sub-frame 103, so that the other end of the rear sub-frame 103 is also abutted against the second mounting bracket 16.

[0070] The present application makes a more compact layout by utilizing the rear floor beam frame 10 as an integrated structural member and the good installation accuracy of the rear floor beam frame 10 with the battery tray 102 and the rear sub-frame 103. That is, the battery tray 102 and the rear sub-frame 103 are both connected to the bottom wall 110 of the first cross beam 11, thereby effectively shortening the overall rear length and significantly reducing the cost of a single vehicle.

[0071] The first mounting bracket 15 and the second mounting bracket 16 are both shell-shaped structures and are respectively connected to the bottom wall 110 of the first cross beam 11 and the longitudinal beam 13 by welding to form a cavity structure respectively to prevent the rear subframe 103 from damaging the rear floor beam 10 .

[0072] Optionally, the connection pipe of the rear sub-frame 103 can be connected to the rear floor beam frame 10 by welding or fixing with nuts.

[0073] In this embodiment, Figure 8 As shown, a beam frame front reinforcement plate 17 is further provided on the side of the bottom wall 110 of the first cross beam 11 away from the first mounting bracket 15. The beam frame front reinforcement plate 17 is connected between the first side wall 112 and the second side wall 114 of the first cross beam 11. The beam frame front reinforcement plate 17, the first cross beam 11 and the first mounting bracket 15 form a multi-layer structure. The connecting pipe at one end of the rear sub-frame 103 is further connected to the beam frame front reinforcement plate 17, so that the connection between the rear sub-frame 103 and the rear floor beam frame 10 is more firmly established.

[0074] The front reinforcement plate 17 of the beam frame is similar to a three-way valve structure, which supports the three cavities at the joint and can effectively prevent the first cross beam 11 from being damaged by the deadweight of the rear sub-frame 103 .

[0075] Specifically, the connecting pipe may be a threaded pipe, which passes through the first through hole 117 and the first mounting hole 151 and is connected to the front reinforcement plate 17 of the beam frame by welding.

[0076] Furthermore, the beam front reinforcement plate 17 may be provided with a plurality of weight-reducing holes for lightweight design.

[0077] like Figure 3 As shown, a box-shaped reinforcement plate 18 is further provided on the longitudinal beam 13. The box-shaped reinforcement plate 18 is located on the side of the bottom wall of the longitudinal beam 13 away from the second mounting bracket 16. The connecting pipe at the other end of the rear subframe 103 is further connected to the box-shaped reinforcement plate 18. The box-shaped reinforcement plate 18 can also increase the rigidity of the longitudinal beam 13 and prevent the rear subframe 103 from damaging the rear floor beam 10.

[0078] The box-shaped reinforcement plate 18 is a box-shaped structure, which is welded to the longitudinal beam 13 in an inverted manner. The connecting pipe at the other end of the rear subframe 103 passes through the second through hole 132 and the second mounting hole and is welded to the box-shaped reinforcement plate 18, so that the connection between the rear subframe 103 and the rear floor beam frame 10 is more secure.

[0079] like Figure 3 As shown, a portion of the longitudinal beam 13 between the first cross beam 11 and the second cross beam 12 is further provided with a plurality of support plates 19, and a rear suspension spring disc 190 is further provided on the side of the bottom wall of the longitudinal beam 13 away from the support plate 19. One of the plurality of support plates 19 is arranged corresponding to the rear suspension spring disc 190 and is used to support the rear suspension spring disc 190. The rear suspension spring disc 190 is used to form an installation position for the rear suspension 104 to prevent the rear suspension 104 from causing damage to the rear floor beam frame 10.

[0080] In this embodiment, Figure 1 and Figure 3 As shown, a support plate 19 is provided above the rear suspension spring disc 190, and the support plate 19 forms a three-layer overlapping structure with the rear floor beam frame 10 and the rear suspension spring disc 190. Two other support plates 19 are provided in front of the support plate 19 at intervals to strengthen the height gradient area of ​​the longitudinal beam 13.

[0081] In other embodiments, there may be four support plates 19 , which may be respectively disposed on two opposite sides of the installation location of the rear suspension spring plate 190 and the longitudinal beam 13 .

[0082] Based on this, the present application also provides a vehicle, which includes the rear floor beam frame integrated structure 100 as described above. The vehicle can be a new energy vehicle or a gasoline vehicle, and the present application does not make any specific restrictions on this.

[0083] Different from the prior art, the present application discloses a rear floor beam frame and its assembly, integrated structure and vehicle. The rear floor beam frame adopts an integrated structure to avoid the use of sheet metal splicing like the traditional beam frame, that is, the rear floor beam frame has no sheet metal splicing, which reduces the weight of the overlapped edge caused by splicing, and can also save the cost of welding and the use of sealants, and will not cause performance loss, so that the integrity of the rear floor beam frame is stronger, and the torsional performance of the vehicle can be effectively improved; and the integrated structure of the rear floor beam frame also reduces the accumulation of welding tolerances, so that the installation accuracy of the rear floor beam frame such as the battery tray and the rear subframe is good, and the first side wall of the first cross beam and the battery tray together constitute a part of the battery box, so that the battery tray can be connected with fewer parts, and the seamless structure of the first cross beam can be used to improve the sealing performance and strength performance of the formed battery box, reduce the splicing gap on the battery box, thereby strengthening the sealing of the battery box, and reducing the risk of the battery inside being corroded and affecting the performance.

[0084] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A rear floor beam integrated structure, characterized in that: include: Battery tray; The rear floor beam frame is an integrated structural member; the rear floor beam frame comprises: First beam; a second crossbeam, spaced apart from the first crossbeam; two longitudinal beams, the two longitudinal beams are located at two ends of the second cross beam and connect the first cross beam and the second cross beam; There are a plurality of mounting positions distributed on the bottom wall of the first crossbeam, the mounting positions are connected to the battery tray, and the first side wall of the first crossbeam and the battery tray constitute a part of the battery box.

2. The rear floor beam integrated structure according to claim 1, characterized in that: The bottom wall of the first crossbeam is also provided with a plurality of load-bearing positions, and the load-bearing positions are used to connect the battery tray to support the weight of the battery tray.

3. The rear floor beam integrated structure according to claim 2, characterized in that: The installation position and the load-bearing position are both screw hole structures, and the hole diameter of the load-bearing position is larger than the hole diameter of the installation position.

4. The rear floor beam integrated structure according to claim 3, characterized in that: The plurality of mounting positions are evenly distributed on the bottom wall of the first crossbeam, and the plurality of load-bearing positions are symmetrically arranged about the center line of the first crossbeam.

5. The rear floor beam integrated structure according to claim 1, characterized in that: The bottom wall of the first cross beam is further provided with a first through hole, and the joint area between the second cross beam and the longitudinal beam is provided with a second through hole, and the first through hole and the second through hole are used for installing the rear subframe.

6. The rear floor beam integrated structure according to claim 1, characterized in that: A process notch is provided at a corner area where the longitudinal beam and the second side wall of the first cross beam are connected, and a matching structure is provided at the process notch for connecting a reinforcing plate.

7. The rear floor beam integrated structure according to claim 1, characterized in that: The rear floor beam frame integrated structure also includes two groups of energy absorbing components, both of which include an extension beam and a rear anti-collision beam mounting plate, the extension beam is connected between the longitudinal beam and the rear anti-collision beam mounting plate, wherein an energy absorbing structure is provided on the extension beam, and the energy absorbing structure is used to absorb the impact transmitted from the rear anti-collision beam mounting plate.

8. The rear floor beam integrated structure according to claim 7, characterized in that: The bottom wall of the first crossbeam is further provided with a first through hole, the bottom wall of the first crossbeam is further provided with a first mounting bracket, the first mounting bracket is further provided with a first mounting hole, and the first mounting hole is arranged corresponding to the first through hole; The first through hole and the first mounting hole are used to mount a connecting pipe at one end of the rear sub-frame, so that one end of the rear sub-frame is also abutted against the first mounting bracket.

9. The rear floor beam integrated structure according to claim 8, characterized in that: A beam frame front reinforcement plate is also provided on the side of the bottom wall of the first cross beam away from the first mounting bracket. The beam frame front reinforcement plate is connected between the first side wall and the second side wall of the first cross beam, and the connecting pipe at one end of the rear subframe is further connected to the beam frame front reinforcement plate.

10. The rear floor beam integrated structure according to claim 8, characterized in that: A second through hole is provided on the bottom wall of the longitudinal beam, a second mounting bracket is provided at the joint area between the longitudinal beam and the second cross beam, a second mounting hole is opened on the second mounting bracket, and the second mounting hole is arranged corresponding to the second through hole; The second through hole and the second mounting hole are used to mount the connecting pipe at the other end of the rear sub-frame, so that the other end of the rear sub-frame is also abutted against the second mounting bracket.

11. The rear floor beam integrated structure according to claim 10, characterized in that: The longitudinal beam is also provided with a box-shaped reinforcement plate, which is located on a side of the bottom wall of the longitudinal beam away from the second mounting bracket, and the connecting pipe at the other end of the rear subframe is further connected to the box-shaped reinforcement plate.

12. The rear floor beam integrated structure according to claim 7, characterized in that: The longitudinal beam is further provided with a plurality of support plates in the portion between the first cross beam and the second cross beam, and a rear suspension spring disc is further provided on the side of the bottom wall of the longitudinal beam facing away from the support plate, and one of the plurality of support plates is arranged corresponding to the rear suspension spring disc for supporting the rear suspension spring disc.

13. The rear floor beam integrated structure according to claim 7, characterized in that: The rear floor beam assembly further includes a seat belt fixing bracket, which is connected between the first side wall and the second side wall of the first cross beam.

14. The rear floor beam integrated structure according to claim 1, characterized in that: The rear floor beam integrated structure further includes a rear sub-frame, and the rear sub-frame is connected below the rear floor beam.

15. A vehicle, characterized in that: The vehicle includes the rear floor beam integrated structure as claimed in claim 14 .

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