Anti-collision beam assembly and vehicle

Abstract

The anti-collision beam assembly comprises an anti-collision beam body and an energy absorption box, the energy absorption box comprises an energy absorption box body and a connecting section connected to one side of the energy absorption box body, the energy absorption box is connected to the anti-collision beam body through the connecting section, the anti-collision beam body and the energy absorption box are integrally formed parts, and the connecting section is connected with the connecting section. The strength of the anti-collision beam body is larger than that of the connecting section, and the strength of the connecting section is larger than that of the energy absorption box body. According to the anti-collision beam assembly disclosed by the utility model, the anti-collision beam body and the energy absorption box are integrally formed parts, so that the punching process is reduced, the process is simple, and the production efficiency is high; the strength of the anti-collision beam body is larger than that of the connecting section, the strength of the connecting section is larger than that of the energy absorption box body, so that the anti-collision beam body is high in tensile strength, the plasticity of the energy absorption box is good, stable transition of performance change from the anti-collision beam body to the energy absorption box can be achieved through the arrangement of the connecting section, and no performance sudden change exists from the anti-collision beam body to the energy absorption box. And the energy absorption box can be better collapsed and deformed.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a bumper beam assembly and a vehicle. Background Art

[0002] In the related art, a bumper beam assembly is a device used to absorb collision energy when a vehicle is collided. It is composed of a bumper beam, an energy-absorbing box and a mounting plate connecting the vehicle. Both the bumper beam and the energy-absorbing box can effectively absorb collision energy during a low-speed collision of the vehicle, and minimize the damage of the impact force to the longitudinal beam of the vehicle body as much as possible, thereby playing its protective role for the vehicle.

[0003] In the related art, multiple sub-parts of the bumper beam are separately processed and manufactured, and the processes are relatively complex, involving processes such as profile extrusion, stretch bending, and welding, resulting in low production efficiency of the bumper beam. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. To this end, an object of the utility model is to propose a bumper beam assembly, in which the bumper beam body and the energy-absorbing box are integrally formed parts, reducing stamping processes, with simple process and high production efficiency; and the setting of the connecting section can realize a smooth transition of the performance change from the bumper beam body to the energy-absorbing box, so that there is no sudden change in performance from the bumper beam body to the energy-absorbing box, and the energy-absorbing box can also better collapse and deform.

[0005] The utility model also proposes a vehicle having the above-mentioned bumper beam assembly.

[0006] The bumper beam assembly according to the first aspect embodiment of the utility model includes: a bumper beam body; an energy-absorbing box, the energy-absorbing box includes an energy-absorbing box body and a connecting section connected to one side of the energy-absorbing box body, and the energy-absorbing box is connected to the bumper beam body through the connecting section, wherein the bumper beam body and the energy-absorbing box are integrally formed parts, the strength of the bumper beam body is greater than the strength of the connecting section, and the strength of the connecting section is greater than the strength of the energy-absorbing box body.

[0007] For the bumper beam assembly according to the embodiment of the utility model, the bumper beam body and the energy-absorbing box are integrally formed parts, reducing stamping processes, with simple process and high production efficiency; the strength of the bumper beam body is greater than the strength of the connecting section, and the strength of the connecting section is greater than the strength of the energy-absorbing box body, so that the bumper beam body has high tensile strength, the energy-absorbing box has good plasticity, and the setting of the connecting section can realize a smooth transition of the performance change from the bumper beam body to the energy-absorbing box, so that there is no sudden change in performance from the bumper beam body to the energy-absorbing box, and the energy-absorbing box can also better collapse and deform.

[0008] According to some embodiments of the utility model, in the direction from the bumper beam body to the energy-absorbing box body, the strength of the connecting section decreases.

[0009] According to some embodiments of the present utility model, in the direction from the anti-collision beam body to the energy absorption box body, the strength of the connecting section gradually decreases.

[0010] According to some embodiments of the present utility model, the hardness of the anti-collision beam body is greater than that of the connecting section, and the hardness of the connecting section is greater than that of the energy absorption box body.

[0011] According to some embodiments of the present utility model, in the direction from the anti-collision beam body to the energy absorption box body, the hardness of the connecting section gradually decreases.

[0012] According to some embodiments of the present utility model, in the direction from the anti-collision beam body to the energy absorption box body, the length A of the connecting section satisfies: 10 mm ≤ A ≤ 60 mm.

[0013] According to some embodiments of the present utility model, the tensile strength B of the anti-collision beam body satisfies: 1350 Mpa ≤ E ≤ 1650 Mpa; the tensile strength C of the energy absorption box satisfies: 550 Mpa ≤ C ≤ 800 Mpa.

[0014] According to some embodiments of the present utility model, the hardness D of the anti-collision beam body satisfies: 410 HV1 ≤ D ≤ 520 HV1; the hardness E of the connecting section satisfies: 220 HV1 ≤ E ≤ 410 HV1; the hardness F of the energy absorption box body satisfies: 220 HV1 ≤ F ≤ 260 HV1.

[0015] According to some embodiments of the present utility model, the anti-collision beam body and the energy absorption box are steel material parts integrally formed by an in-mold soft zone process.

[0016] According to some embodiments of the present utility model, a plurality of through holes are provided on the outer surface of the energy absorption box, and the plurality of through holes communicate with the cavity of the energy absorption box.

[0017] According to some embodiments of the present utility model, in the direction from the anti-collision beam body to the energy absorption box body, the cross-sectional area of the end of the energy absorption box close to the anti-collision beam body gradually decreases.

[0018] According to some embodiments of the present utility model, the anti-collision beam assembly further includes: two reinforcing plates, two energy absorption boxes are provided, the two energy absorption boxes are located on the same side in the front-rear direction of the anti-collision beam body, and are respectively connected to both sides in the length direction of the anti-collision beam body, and the two reinforcing plates are correspondingly connected to the sides of the energy absorption boxes away from the anti-collision beam body, and the reinforcing plates are connected to the vehicle body.

[0019] A vehicle according to a second aspect embodiment of the present utility model includes: a bumper beam assembly according to the above first aspect embodiment of the present utility model.

[0020] In the vehicle according to the embodiment of the present utility model, by providing a bumper beam assembly, the bumper beam body and the energy absorption box are steel material parts integrally formed by an in-mold soft zone process, reducing the stamping process, with a simple process and high production efficiency; the setting of the connecting section can achieve a smooth transition of the performance change from the bumper beam body to the energy absorption box, so that there is no sudden change in performance from the bumper beam body to the energy absorption box, and it also enables the energy absorption box to collapse and deform better, thereby improving the safety of the vehicle.

[0021] Some additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0023] Figure 1 is a schematic diagram of a bumper beam assembly according to some embodiments of the present utility model;

[0024] Figure 2 is Figure 1 a top view of the bumper beam assembly in

[0025] Figure 3 is a schematic diagram of the connection between a bumper beam body and an energy absorption box according to some embodiments of the present utility model;

[0026] Figure 4 is Figure 3 a side view of the connection between the bumper beam body and the energy absorption box in

[0027] Figure 5 is a schematic diagram of a reinforcing plate according to some embodiments of the present utility model;

[0028] Figure 6 is a trend chart of the hardness change of the bumper beam body and the energy absorption box according to some embodiments of the present utility model.

[0029] Reference numerals:

[0030] 100, bumper beam assembly;

[0031] 10, bumper beam body; 11, reinforcing rib;

[0032] 20, energy absorption box; 21, energy absorption box body; 22, connecting section; 23, through hole;

[0033] 30, reinforcing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] Next, reference is made to Figures 1 - 6 describe a bumper beam assembly 100 according to an embodiment of the present utility model.

[0038] According to an embodiment of the first aspect of the present utility model, the bumper beam assembly 100 includes a bumper beam body 10 and two energy absorption boxes 20. The bumper beam assembly 100 may be a front bumper beam assembly 100. The two energy absorption boxes 20 are both connected to the rear of the bumper beam body 10 and are respectively connected to both ends of the bumper beam body 10 in the length direction; the bumper beam assembly 100 may be a rear bumper beam assembly 100. The two energy absorption boxes 20 are both connected to the front of the bumper beam body 10 and are respectively connected to both ends of the bumper beam body 10 in the length direction.

[0039] For example, a reinforcing rib 11 is provided on the side of the bumper beam body 10 away from the energy absorption box 20.

[0040] The energy-absorbing box 20 includes an energy-absorbing box body 21 and a connecting section 22. The connecting section 22 is connected to one side of the energy-absorbing box body 21, and the energy-absorbing box 20 is connected to the bumper beam body 10 through the connecting section 22. Among them, the bumper beam body 10 and the energy-absorbing box 20 are integrally formed parts, and the welding process for welding the bumper beam body 10 and the energy-absorbing box 20 can be cancelled, thereby improving the production efficiency of the bumper beam assembly 100. In addition, after cancelling the welding process, the performance attenuation caused by the heat-affected zone during the welding process can also be avoided, which is beneficial to improving the collision performance of the bumper beam assembly 100.

[0041] For example, the bumper beam body 10 and the energy-absorbing box 20 can be processed by the in-mold soft zone process, and the bumper beam body 10 and the energy-absorbing box 20 can be processed from steel material parts.

[0042] The strength of the bumper beam body 10 is greater than that of the connecting section 22, and the strength of the connecting section 22 is greater than that of the energy-absorbing box body 21. The bumper beam body 10 and the energy-absorbing box 20 are integrally formed with the same material, and the connecting section 22 of the bumper beam body 10 and the energy-absorbing box 20 and the energy-absorbing box body 21 can also achieve different strengths, so that the bumper beam body 10 has a high tensile strength and the energy-absorbing box 20 has good plasticity. There is no performance mutation from the bumper beam body 10 to the energy-absorbing box 20, and a smooth transition is achieved; the setting of the connecting section 22 of the energy-absorbing box 20 can achieve a smooth transition of the performance change of the energy-absorbing box 20 to replace the crush groove structure outside the energy-absorbing box 20 in the related art, and also enables the energy-absorbing box 20 to better crush and deform.

[0043] For the bumper beam assembly 100 according to the embodiment of the present invention, the bumper beam body 10 and the energy-absorbing box 20 are integrally formed parts, reducing the stamping process, with simple process and high production efficiency; the strength of the bumper beam body 10 is greater than that of the connecting section 22, and the strength of the connecting section 22 is greater than that of the energy-absorbing box body 21, so that the bumper beam body 10 has a high tensile strength and the energy-absorbing box 20 has good plasticity. The setting of the connecting section 22 can achieve a smooth transition of the performance change from the bumper beam body 10 to the energy-absorbing box 20, so that there is no performance mutation from the bumper beam body 10 to the energy-absorbing box 20, and it also enables the energy-absorbing box 20 to better crush and deform.

[0044] According to some embodiments of the present invention, referring to Figures 1 - 3 , in the direction from the bumper beam body 10 to the energy-absorbing box body 21, the strength of the connecting section 22 decreases. The strength of the connecting section 22 can gradually decrease or decrease in a stepped manner. By reducing the strength of the connecting section 22, a smooth transition of the strength from the bumper beam body 10 to the energy-absorbing box body 21 can be achieved, and it also enables the energy-absorbing box 20 to better crush and deform.

[0045] According to some embodiments of the present invention, referring to Figures 1 - 3, in the direction from the anti-collision beam body 10 to the energy-absorbing box body 21, the strength of the connecting section 22 gradually decreases, enabling the energy-absorbing box 20 to collapse and deform better.

[0046] According to some embodiments of the present utility model, referring to Figures 1 - 3 , the hardness of the anti-collision beam body 10 is greater than that of the connecting section 22, and the hardness of the connecting section 22 is greater than that of the energy-absorbing box body 21. The anti-collision beam body 10 and the energy-absorbing box 20 are integrally formed of the same material, while the connecting section 22 of the anti-collision beam body 10 and the energy-absorbing box 20 and the energy-absorbing box body 21 can also achieve different hardnesses, so that the anti-collision beam body 10 has a high tensile strength and the energy-absorbing box 20 has good plasticity, and there is no sudden change in performance from the anti-collision beam body 10 to the energy-absorbing box 20, realizing a smooth transition; the setting of the connecting section 22 of the energy-absorbing box 20 can achieve a smooth transition in the performance change of the energy-absorbing box 20, enabling the energy-absorbing box 20 to collapse and deform better.

[0047] According to some embodiments of the present utility model, referring to Figures 1 - 3 , in the direction from the anti-collision beam body 10 to the energy-absorbing box body 21, the hardness of the connecting section 22 gradually decreases, which can achieve a smooth transition in the hardness from the anti-collision beam body 10 to the energy-absorbing box body 21, and also enables the energy-absorbing box 20 to collapse and deform better.

[0048] It can be seen from Figure 6 that the hardness of the anti-collision beam body 10 is relatively stable, the hardness of the energy-absorbing box body 21 is also relatively stable, and the hardness of the connecting section 22 shows a gradually decreasing trend in the direction from the anti-collision beam body 10 to the energy-absorbing box body 21, which can achieve a smooth transition in the hardness from the anti-collision beam body 10 to the energy-absorbing box body 21.

[0049] According to some embodiments of the present utility model, referring to Figures 1 - 3 , in the direction from the anti-collision beam body 10 to the energy-absorbing box body 21, the length A of the connecting section 22 satisfies: 10 mm ≤ A ≤ 60 mm. When the length of the connecting section 22 is within this range, it can provide a sufficient buffer distance for the reduction of the strength from the anti-collision beam body 10 to the energy-absorbing box body 21. For example, the length of the connecting section 22 can be 10 mm, 30 mm, 40 mm, 50 mm or 60 mm, etc.

[0050] According to some embodiments of the present utility model, referring to Figures 1 - 3, the tensile strength of the bumper beam body 10 is B, satisfying: 1350 Mpa ≤ E ≤ 1650 Mpa, and the tensile strength of the energy absorption box 20 is C, satisfying: 550 Mpa ≤ C ≤ 800 Mpa. The bumper beam body 10 has a relatively high tensile strength. When a vehicle collides, the bumper beam body 10 can effectively protect the vehicle structure and the safety of the occupants, and resist external impact forces through its own high strength; while the energy absorption box 20 absorbs energy during a collision to reduce the energy transmitted to the vehicle main structure. Although the tensile strength of the energy absorption box 20 is lower than that of the bumper beam body 10, the tensile strength of the energy absorption box 20 within this range enables the energy absorption box 20 to still have good plasticity and energy absorption characteristics, so as to deform orderly and absorb energy when being impacted.

[0051] For example, the tensile strength of the bumper beam body 10 can be 1350 Mpa, 1400 Mpa, 1500 Mpa, 1600 Mpa or 1650 Mpa, etc.; for example, the tensile strength of the energy absorption box 20 can be 550 Mpa, 600 Mpa, 650 Mpa, 700 Mpa or 800 Mpa, etc.

[0052] Optionally, the elongation rate of the bumper beam body 10 is above 5%, and the elongation rate of the energy absorption box 20 is above 15%.

[0053] Optionally, the yield strength of the energy absorption box 20 is in the range of 450 Mpa to 700 Mpa.

[0054] According to some embodiments of the present invention, referring to Figures 1 - 3 , the hardness of the bumper beam body 10 is D, satisfying: 410 HV1 ≤ D ≤ 520 HV1; the hardness of the connecting section 22 is E, satisfying: 220 HV1 ≤ E ≤ 410 HV1; the hardness of the energy absorption box body 21 is F, satisfying: 220 HV1 ≤ F ≤ 260 HV1. The hardness of the connecting section 22 is between the hardness of the bumper beam body 10 and the hardness of the energy absorption box body 21, which can achieve a smooth transition of the hardness from the bumper beam body 10 to the energy absorption box body 21.

[0055] The bumper beam body 10 not only needs to have a relatively high tensile strength, but also needs to have sufficient hardness to ensure that it can effectively resist deformation and protect the safety of the occupants in the vehicle under high-speed collision conditions; the hardness of the connecting section 22 is relatively low, which may be to ensure that the connecting section 22 can deform appropriately when being impacted, so as to better disperse the impact force; the hardness of the energy absorption box body 21 is the lowest, and the energy absorption box 20 first undergoes plastic deformation during the collision, thereby absorbing more energy and reducing the impact on the vehicle main structure.

[0056] For example, the hardness of the anti-collision beam body 10 can be 410HV1, 450HV1, 470HV1, 500HV1, 520HV1, etc.; for example, the hardness of the connecting section 22 can be 220HV1, 300HV1, 350HV1, 400HV1, 420HV1, etc. For example, the hardness of the energy-absorbing box body 21 can be 200HV1, 220HV1, 240HV1, 250HV1, 260HV1, etc.

[0057] According to some embodiments of the present invention, referring to Figures 1 - 3 , the anti-collision beam body 10 and the energy-absorbing box 20 are steel material parts integrally formed by the in-mold soft zone process. The in-mold soft zone process is a method of achieving different hardnesses or properties in different regions of the same part through specific technical means during the manufacturing process. Through the in-mold soft zone process, not only can the anti-collision beam body 10 and the energy-absorbing box 20 be integrally formed, but also different hardnesses and strengths of the anti-collision beam body 10 and the energy-absorbing box 20 can be achieved. The steel material parts themselves have higher strength, and after processing and forming, the anti-collision beam body 10 and the energy-absorbing box 20 also have higher strength.

[0058] According to some embodiments of the present invention, referring to Figure 1 , Figure 4 , a plurality of through holes 23 are provided on the outer surface of the energy-absorbing box 20, and the plurality of through holes 23 communicate with the cavity of the energy-absorbing box 20. When electrophoresing the anti-collision beam assembly 100, the electrophoretic solution can enter the cavities of the energy-absorbing box 20 and the anti-collision beam body 10 through the through holes 23 to electrophorese the inner walls of the energy-absorbing box 20 and the anti-collision beam body 10. At the same time, when the energy-absorbing box 20 absorbs energy and collapses, the plurality of through holes 23 can provide collapse points for the collapse of the energy-absorbing box 20 to achieve the rapid collapse of the energy-absorbing box 20.

[0059] For example, the number of the through holes 23 is two, three, four, five, six, etc., and this application does not make any restrictions.

[0060] According to some embodiments of the present invention, referring to Figure 1 , Figure 3 , in the direction from the anti-collision beam body 10 to the energy-absorbing box body 21, the cross-sectional area of one end of the energy-absorbing box 20 close to the anti-collision beam body 10 gradually decreases, which not only facilitates the forming and demolding of the energy-absorbing box 20, but also the cross-sectional area of the region of the energy-absorbing box 20 close to the body is larger than the cross-sectional area on the side away from the energy-absorbing box 20, making the energy absorption effect of the energy-absorbing box 20 better.

[0061] According to some embodiments of the present invention, referring to Figure 1 , Figure 5, the anti-collision beam assembly 100 further includes two reinforcing plates 30. There are two energy-absorbing boxes 20. The two energy-absorbing boxes 20 are located on the same side in the front-back direction of the anti-collision beam body 10, and are respectively connected to both sides in the length direction of the anti-collision beam body 10. The two reinforcing plates 30 are correspondingly connected to the sides of the energy-absorbing boxes 20 away from the anti-collision beam body 10, and the reinforcing plates 30 are connected to the vehicle body. For example, the two reinforcing plates 30 are correspondingly welded to the sides of the energy-absorbing boxes 20 away from the anti-collision beam body 10.

[0062] The processing process of the anti-collision beam assembly 100 is as follows:

[0063] First, according to CAE analysis, considering requirements such as collision energy absorption, the materials of the anti-collision beam body 10, the energy-absorbing box 20, and the reinforcing plate 30 are selected. The anti-collision beam body 10 and the energy-absorbing box 20 are integral parts, and considering comprehensively, they are made of hot-formed steel. Under the condition of taking into account performance, they can be designed as variable-thickness plates. The reinforcing plate 30 is considered to be formed by cold-forming steel stamping.

[0064] Secondly, perform forming simulation analysis to determine the feasibility of stamping and forming of each part, and comprehensively consider factors such as the material utilization rate of the sheet metal. Finally, determine the material grade and thickness of the parts, that is, the final shapes of the blanks of each part, and then perform blanking;

[0065] Thirdly, the anti-collision beam body 10 and the energy-absorbing box 20 are heated between 900 °C and 950 °C. The specific heating temperature and holding time are determined according to the equipment and the performance of the sheet metal. After completing heating and austenitization, the sheet is quickly transferred to the mold for quenching and forming, and finally the required hot-formed anti-collision beam body 10 and energy-absorbing box 20 are formed; locally heat the mold to reduce the cooling rate, thereby reducing strength and improving plasticity; the energy-absorbing box 20 area can also be heated to between 600 °C and 700 °C by special induction heating or laser heating, and then slowly cooled to room temperature. The mechanical properties of the anti-collision beam body 10 and the energy-absorbing box 20 obtained through the local heating process can achieve a smooth transition of mechanical properties without sudden changes in performance; the metallographic structure gradually changes from all martensite (M) of the body to ferrite + bainite and a small amount of pearlite (F + B + P) in the energy-absorbing box 20 area.

[0066] The reinforcing plate 30 is cold-stamped and formed using HC340LA or HC420LA with a strength of DP590 or DP780.

[0067] Thirdly, the hot-formed anti-collision beam body 10, the energy-absorbing box 20, and the reinforcing plate 30 are welded and connected.

[0068] Finally, the anti-collision beam assembly 100 is subjected to electrophoretic coating treatment.

[0069] A vehicle according to a second aspect embodiment of the present utility model includes a bumper beam assembly 100 according to the above first aspect embodiment of the present utility model.

[0070] In the vehicle according to the embodiment of the present utility model, by providing the bumper beam assembly 100, the bumper beam body 10 and the energy absorption box 20 are steel material parts integrally formed by the in-mold soft zone process, reducing the stamping process, with simple process and high production efficiency; the setting of the connecting section 22 can achieve a smooth transition of the performance change from the bumper beam body 10 to the energy absorption box 20, so that there is no sudden change in performance from the bumper beam body 10 to the energy absorption box 20, and the energy absorption box 20 can collapse and deform better, thereby improving the safety of the vehicle.

[0071] In the description of this specification, the description with reference to terms such as "some embodiments", "optionally", "further", or "some examples" 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 utility model. In this specification, the schematic representation 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 a suitable manner in any one or more embodiments or examples.

[0072] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A bumper beam assembly, characterized in that, Comprising: The anti-collision beam body; An energy absorption box, the energy absorption box includes an energy absorption box body and a connecting section connected to one side of the energy absorption box body, and the energy absorption box is connected to the anti-collision beam body through the connecting section; Wherein, the anti-collision beam body and the energy absorption box are integrally formed parts, the strength of the anti-collision beam body is greater than the strength of the connecting section, and the strength of the connecting section is greater than the strength of the energy absorption box body.

2. The bumper beam assembly according to claim 1, wherein, In the direction from the anti-collision beam body to the energy absorption box body, the strength of the connecting section decreases.

3. The bumper beam assembly according to claim 2, wherein, In the direction from the anti-collision beam body to the energy absorption box body, the strength of the connecting section gradually decreases.

4. The bumper beam assembly according to claim 1, wherein, The hardness of the anti-collision beam body is greater than the hardness of the connecting section, and the hardness of the connecting section is greater than the hardness of the energy absorption box body.

5. The bumper beam assembly according to claim 4, characterized in that, In the direction from the anti-collision beam body to the energy absorption box body, the hardness of the connecting section gradually decreases.

6. The bumper beam assembly according to claim 1, characterized in that, In the direction from the anti-collision beam body to the energy absorption box body, the length A of the connecting section satisfies: 10mm ≤ A ≤ 60mm.

7. The bumper beam assembly according to claim 1, wherein, The tensile strength B of the anti-collision beam body satisfies: 1350 Mpa ≤ E ≤ 1650 Mpa; the tensile strength C of the energy absorption box satisfies: 550 Mpa ≤ C ≤ 800 Mpa.

8. The anti-collision beam assembly according to claim 4, characterized in that, The hardness D of the anti-collision beam body satisfies: 410 HV1 ≤ D ≤ 520 HV1; the hardness E of the connecting section satisfies: 220 HV1 ≤ E ≤ 410 HV1; the hardness F of the energy absorption box body satisfies: 220 HV1 ≤ F ≤ 260 HV1.

9. The bumper beam assembly according to claim 1, characterized in that, The anti-collision beam body and the energy absorption box are steel material parts integrally formed by the in-mold soft zone process.

10. The bumper beam assembly according to claim 1, characterized in that, The outer surface of the energy absorption box is provided with a plurality of through holes, and the plurality of through holes communicate with the cavity of the energy absorption box.

11. The bumper beam assembly according to claim 1, characterized in that, In the direction from the anti-collision beam body to the energy absorption box body, the cross-sectional area of the end of the energy absorption box close to the anti-collision beam body gradually decreases.

12. The anti-collision beam assembly according to any one of claims 1-11, characterized in that, Further comprising: Two reinforcing plates, there are two energy absorption boxes, the two energy absorption boxes are located on the same side in the front-rear direction of the anti-collision beam body, and are respectively connected to both sides in the length direction of the anti-collision beam body, and the two reinforcing plates are correspondingly connected to the side of the energy absorption box away from the anti-collision beam body, and the reinforcing plates are connected to the vehicle body.

13. A vehicle, characterized in that, Comprising: The anti-collision beam assembly according to any one of claims 1-12.

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