Auxiliary tool for welding wire box of photovoltaic module
By designing an auxiliary tool for wire box welding of photovoltaic modules and adopting an I-shaped block structure, the problem of insufficient contact between the bus bar and the bottom plate of the wire box is solved, the quality and efficiency of laser welding are improved, and welding defects are reduced .
Patent Information
- Application Number
- CN202420621841.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-03-28
AI Technical Summary
During the laser welding of photovoltaic module wire box, the intermediate area between the bus bar and the wire box bottom plate in the prior art cannot be tightly pressed, resulting in poor welding effect and affecting the welding quality of the wire box.
Design an auxiliary tool including the base and the pressed body. The pressed body adopts an I-shaped structure, and the I-shaped blocks formed by the top plate, side plate and rib plate are increased to increase the contact area and provide welding grooves to ensure bus bars and wire box Close contact and uniform compression of the bottom plate.
The yield rate and appearance inspection rate of laser welding are improved, the blackening and burn-through of welding is reduced, the matching and heat dissipation effect of welding is enhanced, and the welding quality is improved.
Smart Images
Figure CN222269005U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the photovoltaic field, in particular to an auxiliary tooling for welding a photovoltaic component wire box. Background Art
[0002] When laser welding the photovoltaic module junction box, the bus bar needs to be welded to the junction box bottom plate. During the laser welding process, the bus bar and the junction box welding bottom plate need to be in close contact, and the more contact area, the better the welding effect. The current junction box welding pressing method on the market is to use head and tail side pressing welding blocks. However, when the two sides of the bus bar are pressed together, the middle welding area is not pressed tightly and there will be leakage, which will cause the laser welding to fail and affect the welding quality of the junction box. Utility Model Content
[0003] In view of the defects in the prior art, the utility model provides an auxiliary tooling for welding photovoltaic module junction boxes, which can tightly press the bus bar and the junction box bottom plate and increase the contact area. Compared with the existing welding method, the welding effect is good.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0005] An auxiliary tooling for welding photovoltaic module wire boxes is characterized in that it includes a base and a pressing body, the base is connected to the pressing body, the pressing body includes a top plate, two side plates and a rib plate, the side plates are connected to both sides of the top plate, the two ends of the rib plate are respectively connected to the two side plates, and the side surfaces are connected to the top plate, the two side plates and the rib plate constitute an I-shaped pressing block, the top plate is provided with a welding groove, and the welding groove runs through the top plate.
[0006] Preferably, the top plate, side plates and rib plates are all integrally formed to form a pressed body.
[0007] Preferably, the top plate, side plates and rib plates are welded together to form a pressed body.
[0008] Preferably, the base body and the pressed body are integrally formed.
[0009] Preferably, the pressed body is welded to the base body.
[0010] Preferably, the base is an L-shaped base, including a horizontal plate and a vertical plate, the horizontal plate is provided with an operating groove on one end connected to the vertical plate, and the vertical plate is a conical plate, the large end of which is connected to the horizontal plate and the small end of which is connected to the pressing body.
[0011] The beneficial effects of the utility model are embodied in:
[0012] The utility model uses an I-shaped pressing block to act on the bus bar design, so that the bus bar that needs laser welding has sufficient contact with the bottom plate of the junction box. The pressing is tighter than before. The larger the contact area, the higher the yield rate of laser welding and the appearance inspection rate after welding. The utility model also uses laser welding to dissipate heat separately to accelerate the heat dissipation of single-area welding, and avoid the heat overlap of two laser welding areas caused by excessive laser welding energy, resulting in black welding and burn-through. The utility model uses an I-shaped area to limit the area where the bus bar and the bottom plate are welded, ensuring that each laser welding can act within the I-shaped area. It is also suitable for the use of various types of bus bars, which enhances the matching of welding. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.
[0014] Figure 1 This is a schematic diagram of the structure of the utility model when applied to the welding of photovoltaic module wire boxes, where D, E, F, and G are heat dissipation areas;
[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model, and the A, B, and C areas in the figure are pressing areas;
[0016] Figure 3 for Figure 1 Top view of the .
[0017] In the attached drawings, 1, base, 2, pressed body, 3, top plate, 4, side plate, 5, rib plate, 6, welding groove, 7, horizontal plate, 8, vertical plate, 9, operation groove, 10, auxiliary tooling, 11, bus bar, 12, junction box bottom plate. DETAILED DESCRIPTION
[0018] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.
[0019] like Figure 2As shown, the auxiliary tooling 10 includes a base 1 and a press-fit body 2. The base 1 is connected to the press-fit body 2 and can be integrally formed or welded together after being formed separately. The press-fit body 2 includes a top plate 3, two side plates 4 and a rib plate 5. The side plates 4 are connected to both sides of the top plate 3. The two ends of the rib plate 5 are respectively connected to the two side plates 4, and the sides are connected to the top plate 3. The two side plates 4 and the rib plate 5 constitute an I-shaped pressing block. The top plate 3 is provided with a welding groove 6. The welding groove 6 runs through the top plate. There are two welding grooves and they are located on both sides of the rib plate. The top plate, the side plate and the rib plate can be integrally formed to form a press-fit body, or they can be welded together after being formed separately to form a press-fit body. For the convenience of operation, the base is an L-shaped base, including a horizontal plate 7 and a vertical plate 7. The horizontal plate 7 is provided with an operating groove 9 on one end connected to the vertical plate 8. The vertical plate is a conical plate, the large end of which is connected to the horizontal plate, and the small end is connected to the press-fit body.
[0020] like Figure 1 As shown, the auxiliary tooling 10 provided by the utility model is applied to the busbar 11 and the bottom plate of the junction box 12. First, the busbar and the bottom plate of the junction box are pressed together by a lifting mechanism. The uppermost layer is the auxiliary tooling 10, the middle layer is the busbar 11, and the lowermost layer is the bottom plate of the junction box 12.
[0021] like Figure 2 As shown, the I-shaped pressing block presses the busbar into three areas A, B, and C, and the laser welding area is the welding groove 6, where the A, B, and C areas correspond to the welding area positions of the welding groove, and the welding area is positioned and restricted to ensure that each welding in different busbar width directions can be welded in the specified area; Figure 3 As shown, the I-shaped pressing block dissipates the heat generated by welding in the heat dissipation areas D, E, F, and G during the laser welding process, and dissipates the heat generated by welding in the above-mentioned areas respectively, so as to prevent the occurrence of welding blackening and over-welding defects caused by heat dissipation. During the pressing process, the I-shaped pressing block uniformly presses down the force of the three areas of the busbar, and presses the entire surface of the busbar flat on the bottom plate of the welding box for effective welding; through the pressing of the I-shaped pressing block, the welding area we need is effectively framed, which can avoid the deviation of the welding position, ensure that each welding is in the same reference position, and the welding size is effectively guaranteed; the heat existing in the laser welding process is separated by the I-shaped pressing block, and the heat is dissipated in two channels respectively, which can effectively reduce the generation of welding impurities and smoke accumulation during the welding process, ensure the welding effect, greatly improve the laser welding efficiency, and reduce welding energy;
[0022] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.
[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.
Claims
1. An auxiliary tool for welding photovoltaic module wire boxes, characterized by: It includes a base and a pressing body, the base is connected to the pressing body, the pressing body includes a top plate, two side plates and a rib plate, the side plates are connected to both sides of the top plate, the two ends of the rib plate are respectively connected to the two side plates, and the side surfaces are connected to the top plate, the two side plates and the rib plate constitute an I-shaped pressing block, the top plate is provided with a welding groove, and the welding groove runs through the top plate.
2. The auxiliary tooling for photovoltaic module wire box welding according to claim 1, characterized in that: The top plate, side plates and rib plates are all integrally formed to form a pressed body.
3. The auxiliary tooling for photovoltaic module wire box welding according to claim 1, characterized in that: The top plate, the side plates and the rib plates are welded together to form a pressed body.
4. The auxiliary tooling for photovoltaic module wire box welding according to claim 1, characterized in that: The base body and the pressed body are integrally formed.
5. The auxiliary tooling for photovoltaic module wire box welding according to claim 1, characterized in that: The pressed body is welded to the base body.
6. The auxiliary tooling for photovoltaic module wire box welding according to claim 1, characterized in that: The base is an L-shaped base, including a horizontal plate and a vertical plate. The horizontal plate is provided with an operating groove on one end connected to the vertical plate. The vertical plate is a conical plate, the large end of which is connected to the horizontal plate, and the small end of which is connected to the pressing body.