Strengthen the structure

By incorporating a reinforcing structure within the battery box, the problem of insufficient lateral compressive strength of the roll-formed steel box is solved, thereby improving the box's rigidity and compressive strength, making it suitable for various box shapes.

CN224458364UActive Publication Date: 2026-07-03HEFEI GUOXUAN HIGH TECH POWER ENERGY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEFEI GUOXUAN HIGH TECH POWER ENERGY
Filing Date
2025-07-02
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

The existing roll-formed steel housing has insufficient lateral compressive strength, which cannot meet the cost control and performance requirements of battery packs.

Method used

A reinforcing structure, including connecting parts and pressure-resistant parts, is set inside the box and fixed by welding to form an integral structure to enhance the rigidity and compression resistance of the box.

Benefits of technology

It improves the overall rigidity and compression resistance of the enclosure, and increases its applicability, versatility and multi-functionality, making it suitable for enclosures of different shapes.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a reinforcing structure, partially or entirely housed within the enclosure. The reinforcing structure includes a connecting portion and a pressure-resistant portion. The connecting portion is fitted and fixed to opposite sides of the enclosure, while the pressure-resistant portion is positioned between the connecting portions, providing support between the opposite sides of the enclosure. The beneficial effects of this utility model are: by incorporating the reinforcing structure, not only are the rigidity and compression resistance of the enclosure enhanced, but the applicability, versatility, and multi-functionality are increased for enclosures of different shapes and for different styles of reinforcing structures, facilitating user operation.
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Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a reinforced structure. Background Technology

[0002] As competition in the electric vehicle market intensifies, OEMs are tightening their control over battery pack costs. Because aluminum is more expensive than steel, more and more battery manufacturers are using rolled steel housings instead of aluminum profile housings to control costs. However, ordinary rolled steel housings cannot meet the increasingly stringent requirements for lateral extrusion strength of the frame.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] The technical problem to be solved by this utility model is to solve the problem of low lateral compressive strength of the box body.

[0005] This utility model solves the above-mentioned technical problems through the following technical means:

[0006] This utility model claims to protect a reinforcing structure, which is partially or entirely set inside the box. The reinforcing structure includes a connecting part and a pressure-resistant part. The connecting part is respectively attached and fixed to the opposite sides of the box. The pressure-resistant part is set between the connecting parts and is supported between the opposite sides of the box.

[0007] By incorporating a reinforced structure, not only are the rigidity and compression resistance of the enclosure enhanced, but the applicability, versatility, and multi-functionality are also increased for enclosures of different shapes and for reinforced structures of different styles, making it easier for personnel to use.

[0008] Preferably, the enclosure is an open-type enclosure.

[0009] Preferably, an L-shaped box is defined as the first box. The first box is hollow inside, and a first groove is formed in the horizontal frame of the first box. The depth of the first groove extends horizontally.

[0010] Preferably, the first left fixing part is attached to and fixed to the inner wall of the first box facing the first groove, the first upper fixing part is attached to and fixed to the inner wall of the first groove, the first right fixing part is provided on the outer wall of the first box, the first left fixing part and the first upper fixing part are diagonally supported and connected by a first pressure-resistant part, and the first left fixing part, the first pressure-resistant part, the first upper fixing part and the first right fixing part are connected end to end in sequence to form a first reinforcing structure.

[0011] To ensure the stability of the connection between the first reinforcing structure and the first housing a, it is specifically designed that the first left fixing part a, the first right fixing part a, and the first housing a are preferably connected by plug welding. Furthermore, the inner wall of the first groove a is preferably connected to the first upper fixing part a by a weld, which, combined with their actual positions and the required connection strength, results in a better fixing effect.

[0012] Preferably, the side-mounted convex-shaped box is defined as the second box. The second box is hollow inside, and a second groove is opened in the horizontal frame of the second box. The depth of the second groove extends horizontally.

[0013] Preferably, the second left fixing part is attached to the inner wall of the second box facing the second groove, and a U-shaped lifting lug is provided on the inner wall of the second groove. The U-shaped lifting lug protrudes from the outer side of the second box. A second right fixing part is provided on the inner wall of the second box. The first pressure-resistant part is obliquely connected between the second left fixing part and the lifting lug. The second left fixing part, the second pressure-resistant part, the lifting lug and the second right fixing part are connected end to end in sequence to form the second reinforcing structure.

[0014] The U-shaped lifting lug b can be used as the mounting point for the second housing b. Therefore, in addition to improving the rigidity and compressive strength, it also enhances the versatility and universality of the reinforced structure.

[0015] Preferably, the enclosure is a closed enclosure.

[0016] Preferably, a square box is defined as the third box, and the inner walls of the third box are both fixed with third fixing parts, and the third fixing parts are supported diagonally or horizontally on one side to form a third reinforcing structure.

[0017] Preferably, the connecting part is welded to the housing for fixation.

[0018] By combining its actual location with the required connection strength, a better fixing effect is achieved.

[0019] Preferably, the reinforced structure is a one-piece construction, and chamfers are provided at the corners.

[0020] In actual production, in order to improve the supporting effect of the first reinforcing structure, the first reinforcing structure is preferably an integral structure, and in order to avoid bending and breakage at the corners, chamfers are provided at all corners of the first reinforcing structure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the connection between the first reinforcing structure and the first housing in Embodiment 1 of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the first box in Embodiment 1 of this utility model;

[0023] Figure 3 This is a schematic diagram of the first reinforcing structure in Embodiment 1 of this utility model;

[0024] Figure 4 This is a schematic diagram of the connection between the second reinforcing structure and the second housing in Embodiment 2 of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the second box in Embodiment 2 of this utility model;

[0026] Figure 6 This is a schematic diagram of the second reinforcing structure in Embodiment 2 of this utility model;

[0027] Figure 7 This is a schematic diagram of the connection between the third reinforcing structure and the third housing in Embodiment 3 of this utility model;

[0028] Figure 8 This is a side view of the connection between the third reinforcing structure and the third housing in Embodiment 3 of this utility model;

[0029] Figure 9 This is a schematic diagram of the connection between the U-shaped reinforcing structure and the third box in Embodiment 4 of this utility model;

[0030] Figure 10 This is a schematic diagram of the connection between the U-shaped reinforced structure and the third box in Embodiment 4 of this utility model;

[0031] Figure 11 This is a schematic diagram of the connection between the H-shaped reinforcing structure and the third box in Embodiment 4 of this utility model.

[0032] 1a, First housing; 101a, First groove; 20a, First left fixing part; 21a, First upper fixing part; 22a, First right fixing part; 23a, First pressure-resistant part;

[0033] 1b, Second housing; 101b, Second recess; 20b, Second left fixing part; 21b, Second pressure-resistant part; 22b, Lifting lug; 23b, Second right fixing part;

[0034] 1c, Third housing; 20c, Third fixing part; 3, Third pressure-resistant part. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] Example 1

[0037] This embodiment requires a protective reinforcement structure to provide stable support for the enclosure and prevent deformation of the enclosure frame due to lateral compression. The reinforcement structure is partially or entirely located inside the enclosure.

[0038] When the enclosure is an open enclosure, the reinforcing structure is located inside the enclosure.

[0039] See Figure 1 and Figure 2 Taking an L-shaped box as an example, the L-shaped box is defined as the first box 1a. The first box 1a is hollow inside, and a first groove 101a is formed in the horizontal frame of the first box 1a. The groove depth of the first groove 101a extends horizontally. The L-shaped box refers to an L-shaped frame with a hollow lateral cross-section. The horizontal frame of the first box 1a refers to the horizontal part of the L-shaped box.

[0040] See Figure 3 The reinforcing structure includes a connecting part and a pressure-resistant part. The connecting part is fixed to the opposite sides of the box body. The pressure-resistant part is provided between the connecting parts. The pressure-resistant part is inclinedly supported between the opposite sides of the box body. Specifically, the first left fixing part 20a is fixed to the inner wall of the first box body 1a facing the first groove 101a, the first upper fixing part 21a is fixed to the inner wall of the first groove 101a, the first right fixing part 22a is provided on the outer wall of the first box body 1a, and the first pressure-resistant part 23a is diagonally supported and connected between the first left fixing part 20a and the first upper fixing part 21a. The first left fixing part 20a, the first pressure-resistant part 23a, the first upper fixing part 21a and the first right fixing part 22a are connected end to end to form the first reinforcing structure.

[0041] In actual production, in order to improve the supporting effect of the first reinforcing structure, the first reinforcing structure is preferably an integral structure, and in order to avoid bending and breakage at the corners, chamfers are provided at all corners of the first reinforcing structure.

[0042] Furthermore, to ensure the stability of the connection between the first reinforcing structure and the first housing 1a, it is specifically designed that the first left fixing part 20a, the first right fixing part 22a, and the first housing 1a are preferably connected by plug welding. In addition, the inner wall of the first groove 101a and the first upper fixing part 21a are preferably connected by seam welding. Considering their actual positions and the required connection strength, a better fixing effect is achieved.

[0043] Therefore, this embodiment enhances the rigidity of the first box 1a by attaching and fixing the first left fixing part 20a, the first right fixing part 22a, and the first upper fixing part 21a to the side wall of the first box 1a. Combined with the first compression-resistant part 23a, this effectively provides diagonal rib support structures on both sides of the first box 1a, significantly improving its overall rigidity and compression resistance. Furthermore, the first left fixing part 20a, the first right fixing part 22a, the first compression-resistant part 23a, and the first upper fixing part 21a are interconnected, forming a single, integrated first reinforcing structure. This results in a compact structure that is easy to install, greatly improving compression resistance with minimal impact on the storage capacity and weight of the first box 1a.

[0044] Example 2

[0045] See Figure 4 and Figure 5 The difference between this embodiment and Embodiment 1 is that the box body is a side-mounted convex-shaped box body, defined as the second box body 1b. The second box body 1b is hollow inside, and a second groove 101b is formed in the horizontal frame of the second box body 1b. The groove depth of the second groove 101b extends horizontally. A side-mounted convex-shaped box body means that the box body is placed on its side, so that the original top of the second box body 1b faces to the right.

[0046] See Figure 6 The second left fixing part 20b is attached to the inner wall of the second box 1b facing the second groove 101b. The inner wall of the second groove 101b is provided with a U-shaped lifting lug 22b, which protrudes from the outside of the second box 1b. The inner wall of the second box 1b is provided with a second right fixing part 23b. The first pressure-resistant part 23a is obliquely connected between the second left fixing part 20b and the lifting lug 22b. The second left fixing part 20b, the second pressure-resistant part 21b, the lifting lug 22b and the second right fixing part 23b are connected end to end in sequence to form the second reinforcing structure.

[0047] Similarly, to ensure the stability of the connection between the second reinforcing structure and the second housing 1b, it is specifically designed that the second left fixing part 20b, the second right fixing part 23b, and the second housing 1b are preferably connected by plug welding. Furthermore, the inner wall of the second groove 101b and the lifting lug 22b are preferably connected by seam welding, which, combined with their actual positions and the required connection strength, results in a better fixing effect.

[0048] The U-shaped lifting lug 22b can be used as the mounting point for the second box 1b. Therefore, this embodiment, based on the improvement of rigidity and compressive strength in Embodiment 1, also adds the multifunctionality and versatility of the reinforced structure.

[0049] Example 3

[0050] See Figure 7 and Figure 8 The difference between this embodiment and Embodiment 1 is that the box is a closed box, and the reinforcing structure is located inside the box. Specifically, taking a square box as an example, the square box is defined as the third box 1c. The third fixing part 20c is attached and fixed to both sides of the inner wall of the third box 1c. The third fixing parts 20c are connected along the diagonal support to the third pressure-resistant part to form a Z-shaped structure.

[0051] Similarly, the third fixing part 20c is preferably connected to the inner walls of the third housing 1c by plug welding to improve the connection stability between the third fixing part 20c and the third housing 1c.

[0052] Example 4

[0053] See Figure 9 The difference between this embodiment and embodiment three is that a third pressure-resistant part is horizontally supported on one side between the third fixing parts 20c to form a U-shaped structure.

[0054] See Figure 10 It is worth noting that the reinforcing structure in this embodiment is not limited to one; for example, it can be set to two. When the U-shaped openings are opposite each other and staggered, the cross-section is formed as a square structure.

[0055] See Figure 11 When the U-shaped openings are placed opposite each other, the cross-section forms an H-shaped structure.

[0056] After confirming the placement configuration, the two reinforcing structures in this embodiment are welded together as a whole using plug welding or seam welding.

[0057] This utility model, by setting up a reinforcing structure, not only enhances the rigidity and compression resistance of the box, but also increases its applicability, versatility, and multi-functionality for different shaped boxes and different styles of reinforcing structures, making it easier for people to use.

[0058] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A reinforced structure, characterized in that, Partially or entirely housed within the enclosure, the reinforcing structure includes connecting parts and pressure-resistant parts. The connecting parts are respectively fitted and fixed to the opposite sides of the enclosure, and pressure-resistant parts are provided between the connecting parts, with the pressure-resistant parts supporting the opposite sides of the enclosure.

2. The reinforcing structure of claim 1, wherein, The enclosure is an open-type enclosure.

3. The reinforcing structure of claim 2, wherein, Define the L-shaped box as the first box (1a). The first box (1a) is hollow inside. The first groove (101a) is opened in the horizontal frame of the first box (1a). The groove depth of the first groove (101a) extends horizontally.

4. The reinforcing structure of claim 3, wherein, The inner wall of the first box (1a) facing the first groove (101a) is fitted with and fixed to the first left fixing part (20a), the inner wall of the first groove (101a) is fitted with and fixed to the first upper fixing part (21a), the outer wall of the first box (1a) is provided with the first right fixing part (22a), the first left fixing part (20a) and the first upper fixing part (21a) are diagonally supported and connected to the first pressure-resistant part (23a), the first left fixing part (20a), the first pressure-resistant part (23a), the first upper fixing part (21a) and the first right fixing part (22a) are connected end to end in sequence to form the first reinforcing structure.

5. The reinforcing structure of claim 2, wherein, Define the side-mounted convex-shaped box as the second box (1b). The interior of the second box (1b) is hollow. The horizontal frame of the second box (1b) has a second groove (101b) with the groove depth extending horizontally.

6. The reinforcing structure of claim 2, wherein, The inner wall of the second box (1b) facing the second groove (101b) is fitted with the second left fixing part (20b). The inner wall of the second groove (101b) is provided with a U-shaped lifting lug (22b), which protrudes from the outside of the second box (1b). The inner wall of the second box (1b) is provided with a second right fixing part (23b). The second left fixing part (20b) and the lifting lug (22b) are inclinedly connected by a first pressure-resistant part (23a). The second left fixing part (20b), the second pressure-resistant part (21b), the lifting lug (22b), and the second right fixing part (23b) are connected end to end in sequence to form the second reinforcing structure.

7. The reinforcing structure of claim 1, wherein, The enclosure is a closed enclosure.

8. The reinforcing structure of claim 7, wherein, The square box is defined as the third box (1c). The inner walls of the third box (1c) are both fitted with and fixed third fixing parts (20c). The third fixing parts (20c) are supported diagonally or horizontally on one side by third pressure-resistant parts.

9. The reinforcing structure of claim 1, wherein, The connecting parts are welded and fixed to the housing.

10. The reinforcing structure of claim 1, wherein, The reinforced structure is constructed as a single unit, with chamfered corners at the edges.