Hanging beam structure and battery box body

Abstract

The utility model discloses a mounting beam structure and a battery box body, the mounting beam structure comprises a mounting beam body, bushings and inclined ribs, a plurality of bushings are fixed on the mounting beam body along the length direction of the mounting beam body, the mounting beam body is connected with the inclined ribs along the length direction of the mounting beam body, and the inclined ribs are arranged obliquely upwards in the outward diffusion direction of the mounting beam body; the lining comprises a lining body and a boss, the lining body is fixed to the mounting beam body, and the boss is arranged at the end, away from the mounting beam body, of the lining body. The mounting beam structure has the advantages that the welding seam stress of the lining and the mounting beam body is reduced on the premise of ensuring the connecting rigidity of the mounting beam structure and the battery box body, so that the strength of the whole battery pack is improved, the safety risk of the whole battery pack is reduced according to the structural strength and vibration requirements of the large battery pack, and the service life of the battery pack is prolonged. And the method has obvious economic benefits and values.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a mounting beam structure and a battery box. Background Technology

[0002] With the rapid development and iteration of the automotive industry, the cost of battery packs has become particularly prominent. Furthermore, electric vehicles encounter various complex operating conditions during operation. To enhance the battery pack's ability to cope with these conditions, its structural strength must be improved, and the design of the battery pack structure directly affects its overall safety performance. With increasing focus on safety and energy efficiency, battery pack safety performance has become increasingly important. With the development of new processes and technologies, battery pack structures have become more diverse. Moreover, with the continuous improvement of battery pack energy density, highly integrated battery pack structures are becoming increasingly crucial.

[0003] Most current battery packs adopt aluminum profile structure design, especially for large-capacity batteries. The entire battery pack is often large and heavy. Due to the limitations of the vehicle layout, there is often no rear hanger, which makes it difficult to meet the requirements for vibration and strength of the battery pack. Utility Model Content

[0004] The technical problem to be solved by this invention is how to ensure the strength of the battery pack.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A mounting beam structure includes a mounting beam body, bushings, and diagonal ribs. Multiple bushings are fixed to the mounting beam body along its length. Diagonal ribs are connected to the mounting beam body along its length. One end of the diagonal rib is connected to the mounting beam body, and the other end is set in a direction away from the mounting beam body.

[0007] The bushing includes a bushing body and a boss. The bushing body is fixed to the mounting beam body, and the boss is located at the end of the bushing body away from the mounting beam body.

[0008] By setting a boss at the end of the bushing body away from the mounting beam body, a portion of the force on the mounting beam body is distributed to the bushing boss, reducing the weld stress between the bushing and the mounting beam body. While the boss reduces the stiffness of the bushing, the diagonal ribs increase the root thickness at the connection between the mounting beam body and the battery box, ensuring the root stiffness of the connection. Through the combined use of the boss and diagonal ribs, the weld stress between the bushing and the mounting beam body is reduced while maintaining the connection stiffness between the mounting beam structure and the battery box, thereby improving the overall strength of the battery pack. This achieves the desired structural strength and vibration requirements for large battery packs, reducing the overall safety risks and demonstrating significant economic benefits and value.

[0009] Preferably, the mounting beam body is internally hollow.

[0010] Preferably, the mounting beam body is internally further provided with a transverse rib.

[0011] Preferably, the mounting beam body is internally further provided with a longitudinal rib perpendicular to the transverse rib.

[0012] The rigidity of the mounting beam body is strengthened through the arrangement of the transverse rib and the longitudinal rib.

[0013] Preferably, a plurality of mounting holes are arranged on the upper end face of the mounting beam body along the length direction thereof, and the one end of the bushing body away from the boss is fixed in the mounting hole.

[0014] Preferably, the internal portion of the inclined rib is solid, and the thickness of the end portion of the inclined rib away from the mounting beam body is greater than the thickness of the end portion of the inclined rib connected with the mounting beam body; so as to improve the rigidity of the root of the connection between the mounting beam structure and the battery box body, weaken the rigidity of the connection between the inclined rib and the mounting beam body, absorb part of the welding stress between the bushing and the mounting beam body, prevent the welding seam from cracking, and improve the strength of the whole battery pack.

[0015] Preferably, the internal portion of the inclined rib is solid, and the inclined rib is an equal-thickness inclined rib; so as to weaken the rigidity of the equal-thickness inclined rib between the root of the connection between the equal-thickness inclined rib and the battery box body and the root of the connection between the equal-thickness inclined rib and the mounting beam body, absorb part of the welding stress between the bushing and the mounting beam body, prevent the welding seam from cracking, and improve the strength of the whole battery pack.

[0016] Preferably, the internal portion of the inclined rib is hollow, the inclined rib comprises a bottom segment body and a top segment body, the bottom segment body is arranged flush with the top portion of the mounting beam body, one end of the top segment body is connected with the bottom segment body, and the other end of the top segment body is arranged away from the mounting beam body; so as to increase the stress point of the root of the connection between the mounting beam body and the battery box body, improve the rigidity of the root of the connection between the mounting beam structure and the battery box body, reduce the welding strength between the bushing and the mounting beam body, prevent the welding seam from cracking, and further improve the strength and safety of the whole battery pack.

[0017] Preferably, a triangular rib is further arranged at the bottom of the bottom segment body between the top segment body and the mounting beam body; so as to improve the strength thereof.

[0018] Preferably, the utility model further provides a battery box body, which comprises the mounting beam structure and the frame beam, and the mounting beam structure is fixed to the outer wall of the frame beam.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] The utility model discloses under the premise of guaranteeing the connecting rigidity of the mounting beam structure and the battery box, reduce the welding stress of bush and mounting beam body, further promote the strength of whole battery pack, realize according to the structural strength and vibration requirement of large -scale battery pack, reduce the safety risk of whole battery pack, have obvious economic benefits and value. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is structural schematic diagram of the utility model embodiment;

[0022] Figure 2 It is structural schematic diagram of the bush of the utility model embodiment;

[0023] Figure 3 It is sectional view of the bush of the utility model embodiment;

[0024] Figure 4 It is structural schematic diagram of the solid mounting beam body of the utility model embodiment;

[0025] Figure 5 It is another structural schematic diagram of the solid mounting beam body of the utility model embodiment;

[0026] Figure 6 It is structural schematic diagram of the hollow mounting beam body of the utility model embodiment;

[0027] Figure 7 It is another structural schematic diagram of the hollow mounting beam body of the utility model embodiment.

[0028] In the drawing: 1, mounting beam body;11, cross rib;12, longitudinal rib;101, mounting hole;2, bush;21, bush body;22, boss;23, connecting shaft;201, connecting hole;3, inclined rib;31, bottom section body;32, top section body;33, triangular rib;4, frame beam. DETAILED DESCRIPTION

[0029] In order to make the person skilled in the art understand the technical scheme of the utility model, the technical scheme of the utility model will be further explained in connection with the drawings of the specification.

[0030] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrated;Can be mechanical connection, can be electrical connection, can also be communication;Can be directly connected, can be indirectly connected through intermediate medium, can be the communication or interaction relationship of two elements inside two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0031] In the present application, unless specifically defined and limited otherwise, the terms "first", "second" are used only for descriptive purpose and can not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless specifically defined and limited otherwise.

[0032] Referring to Figures 1 to 3 The embodiment discloses a mounting beam structure, comprising a mounting beam body 1, a bushing 2 and a diagonal rib 3, a plurality of bushings 2 are fixed to the mounting beam body 1 along the length direction of the mounting beam body 1, the mounting beam body 1 is connected with the diagonal rib 3 along the length direction thereof, Figure 1 The arrow direction is the length direction of the mounting beam body 1; specifically, one end of the diagonal rib 3 is connected to the mounting beam body 1, and the other end is arranged away from the mounting beam body 1, and in the embodiment, the diagonal rib 3 is arranged obliquely upward away from the mounting beam body 1. In the embodiment, the mounting beam body 1 and the diagonal rib 3 are integrally formed.

[0033] The bushing 2 is in a stepped shape, comprising a bushing body 21, a boss 22 and a connecting shaft 23, the bushing body is fixed to the mounting beam body 1, the boss 22 is arranged at one end of the bushing body 21 away from the mounting beam body 1, and a connecting shaft 23 connected with the mounting beam body 1 is coaxially arranged on the side of the bushing body 21 away from the boss 22.

[0034] The center of the bushing 2 is provided with a connecting hole 201 penetrating through the boss 22, the bushing body 21 and the connecting shaft 23 along the central axial direction thereof, for connecting with the vehicle body.

[0035] Referring to Figure 4 The mounting beam body 1 is in a hollow structure, and a cross rib 11 is further fixed in the hollow structure, for strengthening the rigidity of the mounting beam body 1.

[0036] The mounting beam body 1 is provided with a plurality of mounting holes 101 on the upper end surface along the length direction, and the connecting shaft 23 on the bushing 2 is welded and fixed in the mounting hole 101. By arranging the boss 22 on the end of the bushing body 21 away from the mounting beam body 1, the stress of a part of the mounting beam body 1 is shared by the boss 22 of the bushing 2, so as to reduce the welding stress of the bushing 2 and the mounting beam body 1. Due to the arrangement of the boss 22, the rigidity of the bushing is reduced, but the thickness of the root of the connection between the mounting beam body 1 and the battery box is increased by arranging the inclined rib 3, so as to ensure the rigidity of the root of the connection between the mounting beam structure and the battery box, and then the welding stress of the bushing 2 and the mounting beam body 1 is reduced under the premise of ensuring the connection rigidity of the mounting beam structure and the battery box, so as to improve the strength of the whole battery pack, realize the structure strength and vibration requirement of the large battery pack, reduce the safety risk of the whole battery pack, and has obvious economic benefit and value.

[0037] The inclined rib 3 is in a solid structure or a hollow structure.

[0038] As shown in Figure 4 , the inclined rib 3 is in a solid structure. The thickness of the end of the inclined rib 3 away from the mounting beam body 1 is greater than the thickness of the end of the inclined rib 3 connected with the mounting beam body 1. The bottom of the inclined rib 3 is flush with the top of the mounting beam body 1. The top of the inclined rib 3 is arranged obliquely upward from the mounting beam body 1 in the outward diffusion direction, so as to improve the rigidity of the root of the connection between the mounting beam structure and the battery box, and weaken the rigidity of the connection between the inclined rib 3 and the mounting beam body 1, so as to absorb part of the welding stress of the bushing 2 and the mounting beam body 1, prevent the welding seam from cracking, and improve the strength of the whole battery pack.

[0039] Of course, the inclined rib 3 can also be an equal-thickness inclined rib in a solid structure, as shown in Figure 5 . The equal-thickness inclined rib is arranged obliquely upward from the mounting beam body 1 to the battery box, so that the rigidity of the equal-thickness inclined rib at the root of the connection between the equal-thickness inclined rib and the battery box and the root of the connection between the equal-thickness inclined rib and the mounting beam body 1 is weakened, so as to absorb part of the welding stress of the bushing 2 and the mounting beam body 1, prevent the welding seam from cracking, and improve the strength of the whole battery pack.

[0040] As shown in Figure 6 , the inclined rib 3 is in a hollow structure. The inclined rib 3 includes a bottom section body 31 and a top section body 32. The bottom section body 31 is arranged flush with the top of the mounting beam body 1. One end of the top section body 32 is connected with the bottom section body 31. The end of the top section body 32 away from the bottom section body 31 is arranged obliquely upward from the mounting beam body 1 in the outward diffusion direction, so that the stress point of the root of the connection between the mounting beam body 1 and the battery box is increased, the rigidity of the root of the connection between the mounting beam structure and the battery box is improved, the welding strength of the bushing 2 and the mounting beam body 1 is reduced, the welding seam is prevented from cracking, and the strength and safety of the whole battery pack are improved. Wherein Figure 6The end of the middle top section body 32 connected with the bottom section body 31 is arranged close to the center direction of the bottom section body 31, so that the inclination angle of the top section body 32 is large, and the top section body 32 is suitable for the case that the space for matching the battery pack with the vehicle body is small. Figure 7 As shown in the middle, the end of the top section body 32 connected with the bottom section body 31 is arranged close to the direction of the connection between the bottom section body 31 and the mounting beam body 1, as shown in the middle. Figure 7 As shown in the middle, the inclination angle of the top section body 32 is smaller than Figure 6 As shown in the middle, the inclination angle of the top section body 32 is smaller than

[0041] Further, as shown in the middle, the bottom of the bottom section body 31 between the top section body 32 and the mounting beam body 1 is also provided with a triangular rib 33 to improve the strength. Figure 6

[0042] As shown in the middle, the inside of the mounting beam body 1 is also provided with a longitudinal rib 12 perpendicular to the transverse rib 11, and the transverse rib 11 and the longitudinal rib 12 are arranged in a "cross" shape in the inside of the mounting beam body 1 to improve the strength of the mounting beam body 1. Figure 7

[0043] Referring back to the middle, Figure 1 The embodiment also discloses a battery box body, which comprises the mounting beam structure and the frame beam 4, the mounting beam body 1 is welded and fixed on the outer wall of the frame beam 4, and the end of the frame beam 3 away from the mounting beam body 1 is also welded and fixed on the outer wall of the frame beam 4.

[0044] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the utility model, and any figure mark in the claims should not be regarded as limiting the involved claims.

[0045] The above-mentioned embodiments only represent the implementation of the utility model, and the protection scope of the utility model is not limited to the above-mentioned embodiments, and those skilled in the art can make several modifications and improvements without departing from the concept of the utility model, and these all belong to the protection scope of the utility model.​​

Claims

1. A mounting beam structure, characterized by: The mounting beam structure comprises a mounting beam body, a bushing and an inclined rib, a plurality of bushings are fixed to the mounting beam body along the length direction of the mounting beam body, the mounting beam body is connected with the inclined rib along the length direction of the mounting beam body, one end of the inclined rib is connected to the mounting beam body, and the other end of the inclined rib is arranged away from the mounting beam body; The bushing comprises a bushing body and a boss, the bushing body is fixed to the mounting beam body, and the boss is arranged at one end of the bushing body away from the mounting beam body.

2. A mounting beam structure according to claim 1, characterized in that: The mounting beam body is internally hollow.

3. A mounting beam structure according to claim 2, wherein: The mounting beam body is internally provided with a horizontal rib.

4. A mounting beam structure according to claim 3, wherein: The mounting beam body is internally provided with a vertical longitudinal rib perpendicular to the horizontal rib.

5. The mounting beam structure of claim 1, wherein: A plurality of mounting holes are arranged on the upper end surface of the mounting beam body along the length direction of the mounting beam body, and one end of the bushing body is fixed in the mounting hole.

6. The mounting beam structure of claim 1, wherein: The inclined rib is internally solid, and the thickness of the end of the inclined rib away from the mounting beam body is greater than the thickness of the end of the inclined rib connected to the mounting beam body.

7. The mounting beam structure of claim 1, wherein: The inclined rib is internally solid, and the inclined rib is an equal-thickness inclined rib.

8. The mounting beam structure of claim 1, wherein: The inclined rib is internally hollow, and the inclined rib comprises a bottom segment body and a top segment body, the bottom segment body is arranged flush with the top of the mounting beam body, one end of the top segment body is connected to the bottom segment body, and the other end of the top segment body is arranged away from the mounting beam body.

9. A mounting beam structure according to claim 8, characterized in that: A triangular rib is further arranged at the bottom of the bottom segment body between the top segment body and the mounting beam body.

10. A battery pack, characterized by: The mounting beam structure comprises a mounting beam structure according to any one of claims 1-9 and a frame beam, and the mounting beam structure is fixed to the four outer walls of the frame beam.

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