Rolling expansion beam for automobile battery box body

Abstract

The utility model discloses a rolling expansion beam for an automobile battery box body, which comprises an expansion beam main body, the expansion beam main body is integrally formed by adopting a rolling process and is constructed into a rectangular strip-shaped structure, the section of the expansion beam main body in the vertical direction is shaped like a Chinese character'ri ', and the top of the expansion beam main body is further provided with a supporting plane extending along the length direction of the expansion beam main body. Support structures are welded on the supporting plane in an array manner and are used for limiting and fixing the battery pack. The expansion beam has the advantages that the expansion beam is integrally formed in a rolling mode, compared with a traditional expansion beam formed by splicing and welding three stamping plates, the manufacturing process is simpler, the die opening cost for stamping and die opening of three stamping parts is saved, and the overall process cost is further reduced; the cross section of the expansion beam main body in the vertical direction is of the structure shaped like the Chinese character'ri ', so that the structure of the expansion beam main body in the horizontal direction is more stable, and the battery core can be well supported, protected and limited.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile battery box structures, and particularly relates to a roll-expanded beam for an automobile battery box. Background Technique

[0002] Power batteries are an important part of new energy vehicles. In terms of physical structure, power batteries are composed of a battery box and battery cores located inside the box. During the charging and discharging process, the battery cores will expand, and the expansion of the battery cores may cause the electrode components to be pulled and damaged. Therefore, an expansion beam is usually required inside the box to inhibit the expansion of the battery cores.

[0003] In the prior art, expansion beams are all assembled and welded by three stamping parts to ensure the overall support strength of the expansion beam. However, due to the different vehicle models of each brand, the structural dimensions of the expansion beams are also different, and additional stamping and die opening are required each time, resulting in relatively high costs. Moreover, the difficulty of welding and fixing the three stamping parts and the required welding costs are quite high. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a roll-expanded beam for an automobile battery box, aiming to reduce the stamping and die opening costs and welding costs of the existing structure.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A roll-expanded beam for an automobile battery box includes an expansion beam main body, and is characterized in that: the expansion beam main body is integrally formed by a roll-forming process and is configured into a rectangular strip structure. The vertical cross-section of the expansion beam main body is in a "day" shape. The top of the expansion beam main body has a support plane extending along its length direction, and a bracket structure is welded in an array on the support plane. The bracket structure is used for limiting and fixing the battery pack.

[0007] Adopting the above structure, the expansion beam main body integrally formed by roll-forming greatly simplifies the manufacturing process of the expansion beam, thereby reducing the production and processing costs of the expansion beam. The "day" shape of the vertical cross-section of the expansion beam main body ensures the structural strength of the expansion beam main body in the horizontal direction, thereby effectively supporting, protecting and limiting the battery cores.

[0008] Preferably: the bracket structure includes a horizontal installation section. An installation hole is provided in the middle of the horizontal installation section. Extension parts extending downward and obliquely are provided on both sides of the horizontal installation section. A welding section is horizontally provided at one end of the extension part far from the horizontal installation section. The bracket structure is fixedly welded to the top of the expansion beam main body through the welding section. Adopting the above structure can facilitate the fixed welding of the bracket structure to the top of the expansion beam main body and also reduce the welding amount.

[0009] Preferably, the expansion beam body is provided with a central partition beam extending along its length, the central partition beam dividing the interior of the expansion beam body into an upper chamber and a lower chamber, and each of the upper chamber and the lower chamber is provided with a stop block. With this structure, the central partition beam and the stop block further ensure the horizontal support strength of the expansion beam body.

[0010] Preferably, a positioning nut is provided between the horizontal mounting section and the expansion beam body, and the positioning nut is fixedly mounted on the bottom of the horizontal mounting section by welding. The above structure can facilitate the connection of the expansion beam with other components.

[0011] Preferably, a positioning hole is provided at the bottom of the expansion beam body, and the positioning hole is used to pass a screw to fix the expansion beam body in the battery box. The above structure can facilitate the positioning and installation of the expansion beam.

[0012] Preferably, grooves are provided on both sides of the top of the expansion beam body, leaving the upper end of the upper chamber open, with one end of the stopper closely attached to the edge of the groove. This structure effectively reduces the weight of the expansion beam body, thereby reducing the overall weight of the battery.

[0013] Preferably, the expansion beam body is provided with stepped structures on both sides of its end, the stepped structures leaving the upper end of the lower chamber open, and one end of the stopper abuts against the edge of the stepped structures. This structure can effectively reduce the weight of the expansion beam body, thereby reducing the overall weight of the battery.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The rolled expansion beam for the automobile battery box provided by the utility model is rolled into one piece by the entire expansion beam body. Compared with the traditional expansion beam composed of three stamped plates spliced and welded together, the manufacturing process is simpler, and the mold making cost of stamping and opening the molds for three stamped parts is eliminated, thereby reducing the overall process cost; the cross-section of the expansion beam body in the vertical direction is in the shape of a Japanese character, which makes the structure of the expansion beam body in the horizontal direction more stable, thereby being able to well support, protect and limit the battery core. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the roller-pressed expansion beam;

[0017] Figure 2 for Figure 1 A partial enlarged view of point I in the middle;

[0018] Figure 3 It is a schematic structural diagram of a roll-expanded beam;

[0019] Figure 4 It is a sectional schematic diagram showing the installation position of the limit block 3;

[0020] Figure 5 It is a three-dimensional structural schematic diagram showing the bottom of the expansion beam main body 1;

[0021] Figure 6 It is a reference diagram of the actual use state of the roll-expanded beam;

[0022] Figure 7 It is a three-dimensional structural schematic diagram of the expansion beam assembly A;

[0023] Figure 8 It is a three-dimensional structural schematic diagram of the first support plate 7;

[0024] Figure 9 It is a three-dimensional structural schematic diagram of the third support plate 9. Detailed implementation manners

[0025] The following further describes the present utility model in conjunction with embodiments and drawings.

[0026] Embodiment 1:

[0027] As shown in Figure 1 and Figure 3 , a roll-expanded beam for an automotive battery box body includes an expansion beam main body 1. In this embodiment, the expansion beam main body 1 is integrally formed by a roll-forming process and is configured into a rectangular strip structure. The vertical cross-section of the expansion beam main body 1 is in a shape of a Chinese character 'Ri'. The top of the expansion beam main body 1 is also arrayed with a bracket structure 2, and the bracket structure 2 is used for limiting and fixing the battery pack.

[0028] With such a design, compared with the traditional stacking and welding of three stamping parts, the tooling process of the expansion beam is simpler, eliminating the need for additional stamping die opening for stamping parts, thereby reducing the production and processing costs, and the weight of the entire expansion beam is lighter, thus greatly reducing the weight of the whole vehicle.

[0029] As shown in Figure 2 , the bracket structure 2 includes a horizontal installation section 2a. An installation hole 2a1 is opened at the top of the horizontal installation section 2a. Both sides of the horizontal installation end 2a are formed with extension parts 2b extending downward and obliquely. One end of the extension part 2b away from the horizontal installation section 2a is formed with a welding section 2c in the horizontal direction. The bracket structure 2 is welded and fixed to the top of the expansion beam main body 1 through the welding section 2c. With such a design, while ensuring the stable installation of the bracket structure 2, it can also reduce the welding amount and lower the welding cost.

[0030] In this embodiment, five support structures 2 are welded to the top of the expansion beam body 1. A positioning nut 4 is installed between the horizontal mounting section 2a of each support structure 2 and the expansion beam body 1. The positioning nut 4 is fixed to the bottom of the horizontal mounting section 2a by welding. This makes it easier to connect the expansion beam to other vehicle components.

[0031] like Figure 5 As shown, positioning holes 1d are distributed in an array at the bottom of the expansion beam body 1, and each positioning hole 1d is used to penetrate a screw to fix the expansion beam body 1 in the battery box.

[0032] For example Figure 3 As shown, the expansion beam body 1 has a middle partition beam 1a extending along its length direction formed inside. The middle partition beam 1a divides the interior of the expansion beam body 1 into an upper chamber 1b and a lower chamber 1c. Limiting blocks 3 are fixedly installed in the upper chamber 1b and the lower chamber 1c. With this design, the support strength of the expansion beam body 1 in the horizontal direction is ensured through the design of the middle partition beam 1a and the limiting blocks 3, thereby being able to support, protect and limit the battery core.

[0033] Combine Figure 3 and Figure 6 As shown, in this embodiment, of the two vertical surfaces of the expansion beam main body 1, one surface is arranged vertically and the other surface is arranged at an angle, and the installation position of the vertically arranged surface is located on the side close to the battery, so as to ensure that the battery core can be well supported by the expansion beam main body 1, and the inclined surface is conducive to the expansion of the battery core, so that the expansion beam main body 1 can be deformed and the limit block 3 can play a limiting support role.

[0034] In this embodiment, the limiting block 3 is fixedly installed inside the expansion beam body 1 by welding, and the welding positions of the two limiting blocks 3 in the upper chamber 1b and the lower chamber 1c are opposite to each other.

[0035] Further, such as Figure 4 As shown, groove structures 1e are formed on both sides of the top of the expansion beam main body 1. The groove structure 1e makes the upper end of the upper chamber 1b open, and the limit blocks 3 are installed at the left and right ends of the upper chamber 1b, and one end of the limit block 3 is close to the edge of the groove structure 1e. This design can ensure the stability of the structure of the expansion beam main body 1 while further reducing its own weight, thereby further reducing the weight of the entire vehicle.

[0036] A stepped structure 1f is also formed on both sides of the end of the expansion beam main body 1. The stepped structure 1f makes the upper end of the lower chamber 1c open. In this embodiment, the limit block 3 is also installed on the left and right sides of the lower chamber 1c, and one end of the limit block 3 is close to the edge of the stepped structure 1f. This design ensures the structural stability of the expansion beam main body 1 while also effectively reducing the weight of the expansion beam main body 1.

[0037] Example 2:

[0038] like Figure 6 As shown, a battery box includes a box bottom plate 5. In this embodiment, the box bottom plate 5 is a rectangular structure, and a box frame 6 is fixedly installed in the circumference of the box bottom plate 5. The box frames 6 are connected end to end to form a rectangular frame. The expansion beam assembly A and the rectangular roller-pressed expansion beam described in Example 1 are installed in the rectangular frame. The expansion beam assembly A is arranged parallel to the roller-pressed expansion beam and is respectively arranged at both ends of the rectangular frame.

[0039] like Figures 7 to 9 As shown, the expansion beam assembly A includes a first support plate 7, a second support plate 8, and a third support plate 9 stacked in sequence. In this embodiment, the first support plate 7, the second support plate 8, and the third support plate 9 are all made by stamping and fixed by welding. A first connecting section 7a extends from the top of the first support plate 7 toward the third support plate 9, and five first protrusions 7b are formed along the length of the first connecting section 7a. Each first protrusion 7b has a first tooling hole 7b1 at the top. A second connecting section 9a extends from the top of the third support plate 9 toward the first support plate 7, and five second protrusions 9b are formed along the length of the second connecting section 9a. Each second protrusion 9b has a second tooling hole 9b1 at the top. The first tooling holes 7b1 and the second tooling holes 9b1 correspond one to one.

[0040] In this embodiment, the second support plate 8 is constructed in a bow shape, a first installation chamber is formed between the first support plate 7 and the second support plate 8, and a second installation chamber is formed between the second support plate 8 and the third support plate 9. Limiting blocks 3 are clamped at both ends of the two chambers to ensure the horizontal support strength of the expansion beam assembly A.

[0041] like Figure 9 As shown, the bottom of the third support plate 9 is provided with an array of positioning and mounting holes 9d along its length direction. The expansion beam assembly A is fixedly mounted on the bottom plate 5 of the box body through the positioning and mounting holes 9d. The first support plate 7 also has a first folding portion 7c folded outward at both ends, and the third support plate 9 has a second folding portion 9c folded outward at both ends. In order to ensure the structural strength of the entire expansion beam assembly A, the first folding portion 7c and the second folding portion 9c are both fixed to the box body frame 6 by welding.

[0042] like Figure 6 As shown, a first support rod 10 is welded between the box frame 6 and the expansion beam assembly A, and a second support rod 11 is welded between the roller-pressed expansion beam and the box frame 6, thereby further ensuring the support strength of the entire battery box in the horizontal direction.

[0043] In this embodiment, support beams 12 are welded to the outer sides of the two box frames 6 perpendicular to the layout position of the expansion beam assembly A. Positioning support holes 12a are formed on the tops of the support beams 12, and the positioning support holes 12a are used to facilitate the connection between the battery box and the vehicle body.

[0044] The utility model combines the traditional stamped and welded expansion beam with the roll-formed expansion beam, thereby improving the overall support strength of the battery box, thereby effectively avoiding damage to the electrode assembly caused by battery expansion.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention. Such changes fall within the scope of protection of the present invention.

Claims

1. A roll-pressed expansion beam for an automobile battery box, comprising an expansion beam body (1), characterized in that: The expansion beam body (1) is integrally formed by a rolling process and is configured as a rectangular strip structure. The vertical cross-section of the expansion beam body (1) is in the shape of a Chinese character 'Ri'. The top of the expansion beam body (1) has a support plane extending along its length direction, and a bracket structure (2) is welded in an array on this support plane. The bracket structure (2) is used for limiting and fixing the battery pack.

2. The roll-pressed expansion beam for an automobile battery box according to claim 1, characterized in that: The bracket structure (2) includes a horizontally installed section (2a). An installation hole (2a1) is provided in the middle of the horizontally installed section (2a). Extension parts (2b) extending downward and obliquely are provided on both sides of the horizontally installed section (2a). A welding section (2c) is horizontally arranged at the end of the extension part (2b) far from the horizontally installed section (2a). The bracket structure (2) is fixedly welded to the top of the expansion beam body (1) through the welding section (2c).

3. The roll-pressed expansion beam for an automobile battery box according to claim 1, characterized in that: An intermediate partition beam (1a) extending along the length direction is provided inside the expansion beam body (1). The intermediate partition beam (1a) divides the interior of the expansion beam body (1) into an upper chamber (1b) and a lower chamber (1c). Limit blocks (3) are provided in both the upper chamber (1b) and the lower chamber (1c).

4. The roll-pressed expansion beam for an automobile battery box according to claim 2, characterized in that: A positioning nut (4) is provided between the horizontally installed section (2a) and the expansion beam body (1). The positioning nut (4) is fixedly installed at the bottom of the horizontally installed section (2a) in a welding form.

5. The roll-pressed expansion beam for an automobile battery box according to claim 1, characterized in that: A positioning port (1d) is provided at the bottom of the expansion beam body (1). The positioning port (1d) is used for passing through a screw to fixedly install the expansion beam body (1) in the battery box.

6. The roll-pressed expansion beam for an automobile battery box according to claim 3, characterized in that: Groove structures (1e) are provided on both sides of the top of the expansion beam body (1). The groove structures (1e) make the upper end of the upper chamber (1b) open. One end of the limit block (3) abuts against the edge of the groove structure (1e).

7. The roll-pressed expansion beam for an automobile battery box according to claim 3, characterized in that: Step structures (1f) are provided on both sides of the end of the expansion beam body (1). The step structures (1f) make the upper end of the lower chamber (1c) open. One end of the limit block (3) abuts against the edge of the step structure (1f).

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