A roll-formed and bent PACK housing frame and PACK housing

Abstract

This invention provides a roll-formed and bent PACK box frame and a PACK box. The roll-formed and bent PACK box frame includes a frame-shaped side beam, the two ends of which are welded together. The side beam is a hollow structure. Anti-weld-through components are fixedly installed on the inner wall of the side beam at the welded ends. An opening is formed on the inner side of the side beam at the welded ends, allowing the anti-weld-through component to be inserted into the side beam. This invention reduces the risk of weld-through of the frame and improves the strength and rigidity of the welded joints.

Description

Technical Field

[0001] This utility model relates to the field of battery box technology, specifically to a roll-formed bent PACK box frame and PACK box. Background Technology

[0002] Currently, the frame of the roll-formed PACK is generally made by welding together short sections of straight roll-formed beams. The welding methods include right-angle welding and 45° welding, but both have the problem of large welding deformation.

[0003] Chinese utility model patent CN214542386U discloses a battery pack housing and battery pack. It uses a roll forming process to bend a profile, then welds the two ends of the profile to form the frame of the battery pack housing. The entire frame has only one weld seam, which improves the structural strength of the frame. However, the frame wall is relatively thin, making it prone to weld burn-through during the welding process, significantly reducing the yield rate of the housing. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a roll-formed bent PACK frame and PACK body, which can reduce the risk of weld burn-through of the frame and improve the strength and rigidity of the welded joints.

[0005] To solve the above-mentioned technical problems, in a first aspect, this utility model provides a roll-formed and bent PACK box frame, including a roll-formed and bent frame-shaped side beam. The two ends of the side beam are connected by welding. The side beam is a hollow structure. Anti-weld-through components are fixedly provided on the inner wall of the side beam. The anti-weld-through components are fixed at the welded ends of the side beam. An opening is opened on the inner side of the side beam. The opening is opened at the welded ends of the side beam. The opening is used to insert the anti-weld-through components into the side beam.

[0006] In some embodiments, the weld penetration protector is C-shaped, and both the top and bottom of the weld penetration protector are in close contact with the side beam.

[0007] In some embodiments, the weld penetration protector is box-shaped.

[0008] In some embodiments, the inner side of the weld penetration protector is flush with the inner side of the side beam.

[0009] In some embodiments, the anti-weld-through component is fixed to the side beam by laser filler wire welding, or resistance welding and spot welding of sealant.

[0010] In some embodiments, the thickness of the anti-weld penetration component is not less than 2 mm.

[0011] In some embodiments, the bend in the side beam is arc-shaped.

[0012] In some embodiments, the bends of the side beams are at right angles.

[0013] Furthermore, the side beam includes an outer plate, an inner plate, a top plate, and a bottom plate. The inner plate includes multiple inner plate units, the top plate includes multiple top plate units, and the bottom plate includes multiple bottom plate units. The outer plate, the multiple inner plate units, the multiple top plate units, and the multiple bottom plate units are integrally formed structures. Adjacent inner plate units are connected by welding, adjacent top plate units are connected by welding, and adjacent bottom plate units are connected by welding.

[0014] Secondly, this utility model provides a PACK housing, including the aforementioned roll-formed and bent PACK housing frame.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This utility model reduces the risk of weld burn-through by setting anti-weld-through components at the weld joints of the edge beam ends, increases the yield rate, and improves the strength and rigidity of the weld joints of the edge beams.

[0017] 2. The anti-welding penetration component of this utility model can be fixed to the side beam by laser filler wire welding, or resistance welding and spot welding of sealant. These two welding methods have low heat input, which can reduce welding deformation and improve the flatness of the box sealing surface.

[0018] 3. The bends of the side beams of this utility model are at right angles, which, compared to arcs, can improve the utilization rate of the internal space of the box. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the side beam of this utility model when the bend is arc-shaped;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a schematic diagram of the structure of the anti-weld penetration component of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the side beam of this utility model when the bend is at a right angle;

[0023] Figure 5 for Figure 4 Enlarged view at point B in the middle;

[0024] Figure 6 This is a schematic diagram of the structure of the present invention when two adjacent top plate units are not welded together;

[0025] Figure 7 for Figure 6Enlarged view of point C in the middle.

[0026] Reference numerals: 1-Side beam; 11-Outer plate; 12-Inner plate; 121-Inner plate unit; 13-Top plate; 131-Top plate unit; 14-Bottom plate; 141-Bottom plate unit; 15-Opening; 2-Anti-weld penetration component. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0028] like Figure 1 As shown, this utility model provides a roll-formed and bent PACK box frame, including a roll-formed and bent frame-shaped side beam 1, as shown. Figure 2 As shown, the two ends of the side beam 1 are connected by welding. The side beam 1 is a hollow structure. The anti-welding through part 2 is fixedly installed on the inner wall of the side beam 1. The anti-welding through part 2 is fixed at the welding points at both ends of the side beam 1. An opening 15 is opened on the inner side of the side beam 1. The opening 15 is opened at the welding points at both ends of the side beam 1. The opening 15 is used to put the anti-welding through part 2 into the side beam 1.

[0029] Understandably, since the thickness of the side beam 1 is relatively thin, directly welding both ends of the side beam 1 would easily result in weld burn-through, affecting the sealing performance. This invention addresses this by adding a weld-burn-through protector 2 at the weld joint, increasing the thickness of the weld joint at both ends of the side beam 1, significantly reducing the risk of weld burn-through and improving the yield rate. To allow the weld-burn-through protector 2 to be inserted into the side beam 1, this invention provides an opening 15 at the end of the side beam 1. The size of the opening 15 is not smaller than the size of the weld-burn-through protector 2, allowing it to enter the side beam 1 through the opening 15.

[0030] In addition, the welded joints at both ends of the side beam 1 are the weak points of the roll-formed and bent PACK box frame, and the anti-weld-through component 2 can also improve the strength and rigidity of this position.

[0031] like Figure 3 As shown, in some embodiments, the anti-weld penetration component 2 is C-shaped, and the top and bottom of the anti-weld penetration component 2 are in close contact with the side beam 1.

[0032] In some embodiments, the weld-proof component 2 may also be box-shaped. In this case, the width of the opening 15 should be greater than the width of the weld-proof component 2, so that the weld-proof component 2 can be welded to the inner wall of the side beam 1 through the opening 15.

[0033] Furthermore, the inner side of the anti-weld penetration component 2 is flush with the inner side of the side beam 1, which can prevent the anti-weld penetration component 2 from interfering with the internal equipment.

[0034] In some embodiments, the anti-weld-through component 2 is fixed to the side beam 1 by laser filler wire welding, or resistance welding and spot welding of sealant.

[0035] Both of these welding methods involve low heat input, which can reduce welding deformation and improve the flatness of the sealing surface of the enclosure.

[0036] In some embodiments, the thickness of the anti-weld-through component 2 is not less than 2 mm, thereby ensuring the anti-weld-through effect of the anti-weld-through component 2.

[0037] like Figure 1 As shown, in some embodiments, the bend of the side beam 1 is arc-shaped, and the entire side beam 1 is an integral structure. Only welding is required at the ends to form a frame structure, which reduces the amount of welding, helps to reduce welding deformation and welding defects, improves the flatness of the box sealing surface and the welding yield of the box.

[0038] like Figure 4 , 5 As shown, in some embodiments, the bend of the side beam 1 is at a right angle.

[0039] Compared to an arc shape, bending the side beam 1 into a right angle can improve the utilization rate of the internal space of the box. However, it should be noted that if the entire side beam 1 is a one-piece structure, when bent into a right angle, the inner side of the side beam 1 is subjected to greater compressive force, which can easily lead to deformation of the inner side of the side beam 1.

[0040] Furthermore, such as Figure 6 , 7 As shown, the side beam 1 includes an outer plate 11, an inner plate 12, a top plate 13, and a bottom plate 14. The inner plate 12 includes multiple inner plate units 121, the top plate 13 includes multiple top plate units 131, and the bottom plate 14 includes multiple bottom plate units 141. The outer plate 11, the multiple inner plate units 121, the multiple top plate units 131, and the multiple bottom plate units 141 are integrally formed structures. Adjacent inner plate units 121 are connected by welding, adjacent top plate units 131 are connected by welding, and adjacent bottom plate units 141 are connected by welding.

[0041] It is understandable that the structure of the side beam 1 is as follows: four inner plate units 121, four top plate units 131, and four bottom plate units 141 are integrally connected to an outer plate 11. When the outer plate 11 is bent, as... Figure 7 As shown, at this point, the bend in the outer panel 11 has not yet been bent into a right angle, and the adjacent inner panel unit 121, top panel unit 131, and bottom panel unit 141 are not yet in contact. Once the bend in the outer panel 11 is bent into a right angle, the adjacent inner panel unit 121, top panel unit 131, and bottom panel unit 141 will contact each other. At this point, adjacent inner panel units 121, adjacent top panel units 131, and adjacent bottom panel units 141 can be welded together to form a shape as shown in the image. Figure 5The weld seam is shown. Compared to the curved design, this design adds four weld seams, but does not affect the flatness of the enclosure's sealing surface and can improve the utilization rate of the enclosure's internal space.

[0042] This utility model also provides a PACK housing, including a roll-formed and bent PACK housing frame.

[0043] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 application, and should all be included within the protection scope of this application.

Claims

1. A roll-bent PACK box frame, characterized by: The device includes a side beam (1) that is rolled and bent into a frame shape. The two ends of the side beam (1) are connected by welding. The side beam (1) is a hollow structure. A weld-proof component (2) is fixedly installed on the inner wall of the side beam (1). The weld-proof component (2) is fixed at the welding points at both ends of the side beam (1). An opening (15) is opened on the inner side of the side beam (1). The opening (15) is opened at the welding points at both ends of the side beam (1). The opening (15) is used to put the weld-proof component (2) into the side beam (1).

2. The roll-folding PACK box frame of claim 1, wherein: The anti-welding-through component (2) is C-shaped, and the top and bottom of the anti-welding-through component (2) are in close contact with the side beam (1).

3. The roll-formed and bent PACK frame according to claim 1, characterized in that: The anti-weld penetration component (2) is box-shaped.

4. The roll-formed and bent PACK frame according to claim 3, characterized in that: The inner side of the anti-welding component (2) is flush with the inner side of the side beam (1).

5. The roll-formed bent PACK frame according to any one of claims 1 to 4, characterized in that: The anti-welding component (2) is fixed to the side beam (1) by laser filler wire welding, or resistance welding and spot welding of sealant.

6. The roll-formed bent PACK frame according to any one of claims 1 to 4, characterized in that: The thickness of the anti-weld penetration component (2) is not less than 2 mm.

7. The roll-formed bent PACK frame according to any one of claims 1 to 4, characterized in that: The bend of the side beam (1) is arc-shaped.

8. The roll-formed bent PACK frame according to any one of claims 1 to 4, characterized in that: The bend of the side beam (1) is at a right angle.

9. The roll-formed bent PACK frame according to claim 8, characterized in that: The side beam (1) includes an outer plate (11), an inner plate (12), a top plate (13), and a bottom plate (14). The inner plate (12) includes multiple inner plate units (121), the top plate (13) includes multiple top plate units (131), and the bottom plate (14) includes multiple bottom plate units (141). The outer plate (11), multiple inner plate units (121), multiple top plate units (131), and multiple bottom plate units (141) are integrally formed. Adjacent inner plate units (121) are connected by welding, adjacent top plate units (131) are connected by welding, and adjacent bottom plate units (141) are connected by welding.

10. A PACK enclosure, characterized in that: Includes the roll-formed bent PACK frame as described in any one of claims 1 to 9.

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