Bus bar welding device

Abstract

The utility model discloses a bus bar welding device which comprises a correcting mechanism and at least two welding mechanisms, the correcting mechanism can be used for correcting and fixing a bus bar in the length, width and height directions of the bus bar, and each welding mechanism comprises a telescopic piece and a welding piece connected with the end of the telescopic piece. The welding parts are arranged in the length direction of the bus bar, and the telescopic part stretches out and draws back to drive the welding parts to ascend and descend so that the welding parts can weld the bus bar and a welding strip of a photovoltaic module. The device can adapt to welding of more welding strips and bus bars, meanwhile, the bus bars can be comprehensively and accurately corrected and fixed, and the welding efficiency of the bus bars is improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, specifically to a busbar welding device. Background Technology

[0002] The pre-layer repair area for photovoltaic modules primarily focuses on repairing defective components from the upstream process. These defects mainly include poor soldering, microcracks, or broken cells, as well as solder strip misalignment, poor or excessive soldering of busbars, and misalignment of encapsulant film. Pre-layer repair of photovoltaic modules is crucial; failure to repair these defective components may directly lead to module degradation or scrapping in downstream applications. For the aforementioned defect types, in cases of cell breakage linked to the busbar, severe damage to the cell string, or poor or excessive soldering of the busbar, measures such as replacing the cell / string are necessary. All of these measures involve welding the busbar.

[0003] Currently, busbar welding in general repair areas is usually done manually with a soldering iron, which often takes a long time. At the same time, the busbar is not completely aligned and fixed during welding, and it is easy for the busbar to shift, which restricts the welding efficiency. Utility Model Content

[0004] To address at least one of the problems mentioned in the background art, this utility model provides a busbar welding device that can accommodate welding of more welding strips and busbars, while also enabling comprehensive and precise alignment and fixing of the busbars, thereby improving busbar welding efficiency.

[0005] The specific technical solution provided by this utility model is as follows:

[0006] A busbar welding device is provided, including a straightening mechanism and at least two welding mechanisms. The straightening mechanism is used to straighten and fix the busbar along its length, width, and height. The welding mechanism includes a telescopic member and a welding member connected to the end of the telescopic member. The welding member is arranged along the length of the busbar. The telescopic member extends and retracts to drive the welding member to rise and fall, so that the welding member welds the busbar and the welding strip of the photovoltaic module.

[0007] As a preferred embodiment of the above solution, the correction mechanism includes at least two sliding seats and a first driving member connected to the sliding seats. The at least two sliding seats are disposed opposite to each other at both ends of the busbar. The first driving member is used to drive the sliding seats to slide along the length direction of the busbar and to clamp the two sliding seats at both ends of the busbar along the length direction.

[0008] As a preferred embodiment of the above solution, the correction mechanism further includes a first slider and a second driving member connected to the first slider. At least two first sliders are disposed opposite each other on each sliding seat. The second driving member is used to drive the first slider to slide along the width direction of the busbar and to clamp the two first sliders at both ends of the busbar along the width direction.

[0009] As a preferred embodiment of the above solution, the sliding seat is provided with a first slide rail, the extension direction of the first slide rail is parallel to the width direction of the busbar, and the first slider is disposed on the first slide rail and slides along the first slide rail.

[0010] As a preferred embodiment of the above solution, the correction mechanism further includes a second slider and a third driving member connected to the second slider. The second slider is disposed on the sliding seat, and the third driving member is used to drive the second slider to slide along the height direction of the busbar and to press the second slider against the busbar along the height direction.

[0011] As a preferred embodiment of the above solution, the sliding seat is provided with a second slide rail, the extension direction of the second slide rail is parallel to the height direction of the busbar, and the second slider is disposed on the second slide rail and slides along the second slide rail.

[0012] As a preferred embodiment of the above scheme, the second slider extends along the width direction of the busbar.

[0013] As a preferred embodiment of the above scheme, the length direction of the welded component extends along the length direction of the busbar.

[0014] As a preferred embodiment of the above solution, the telescopic component includes a plurality of telescopic shafts, the welded component is connected to the end of the telescopic shaft, and the welded component and the telescopic shaft are disposed above the busbar.

[0015] As a preferred embodiment of the above solution, the busbar welding device further includes a base plate, on which the alignment mechanism, the busbar, and the welding strip of the photovoltaic module are disposed. A third slide rail is provided on the base plate, and the sliding seat is disposed on the third slide rail and slides along the third slide rail.

[0016] As a preferred embodiment of the above solution, the busbar welding device further includes a support mechanism, which is disposed on the base plate, and the telescopic member is disposed on the support mechanism.

[0017] By employing the above technical solution, the busbar welding device of this utility model, through the setting of a straightening mechanism and at least two welding mechanisms, allows for comprehensive and precise straightening and fixing of the length, width, and height of the busbar during welding. Then, the photovoltaic module's cells or strings are placed in positions corresponding to the busbar, with the welding strips of the cells aligned with the busbar. Next, the telescopic component moves the welding component up and down, welding the busbar and welding strips. The arrangement of at least two welding components along the length of the busbar enables the welding component to simultaneously weld multiple welding strips on the cells or strings, thus improving the welding efficiency of the busbar. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a welding device provided in an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Another structural diagram from a different angle;

[0021] Figure 3 for Figure 1 A front view structural diagram;

[0022] Figure 4 for Figure 1 A top-view structural diagram;

[0023] Figure 5 for Figure 1 A schematic diagram of the central correction mechanism;

[0024] Figure 6 This is a schematic diagram of the structure during the welding of a half-cell battery according to an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure during the welding of a half-cell battery cell, provided in another embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the structure during the welding of a whole battery cell, as provided in an embodiment of this utility model. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and 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.

[0028] It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "inner," "outer," and "bottom," etc., used in this specification indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as referring to...

[0029] like Figures 1 to 2 As shown, a busbar welding device of this utility model includes a straightening mechanism 1 and at least two welding mechanisms 2. The straightening mechanism 1 is used to straighten and fix the busbar 100 along its length, width, and height directions. The welding mechanism 2 includes a telescopic member 21 and a welding member 22 connected to the end of the telescopic member 21. The welding members 22 are arranged along the length direction of the busbar. At least two welding members 22 of the at least two welding mechanisms 2 are arranged along the length direction of the busbar, which can accommodate more welding strips to be welded to the busbar. At the same time, the length direction of the welding member 22 extends along the length direction of the busbar 100, so that the length direction of a single welding member 22 extending along the length direction of the busbar can further accommodate more welding strips to be welded to the busbar. The telescopic member 21 extends and retracts to drive the welding member 22 to rise and fall along the height direction of the busbar 100 so that the welding member 22 can weld the busbar 100 and the welding strip 200 of the photovoltaic module. In this embodiment, the welding member 22 is a welding head, specifically an electromagnetic welding head.

[0030] like Figures 6 to 8As shown, in this embodiment, there are two welding mechanisms 2. The two welding components 22 of the two welding mechanisms 2 are arranged above the busbar along the length of the busbar. In actual welding, the welding mechanisms 2 can be used to weld the busbars of single or multiple strings of half-cell battery cells. At this time, the battery cell is located on one side of the busbar, and the welded busbar is located on the side of the battery cell. Alternatively, the welding mechanisms 2 can be used to weld the busbars of single or multiple strings of whole-cell battery cells. At this time, the two halves of the whole-cell battery cell are located on both sides of the busbar, and the welded busbar is located in the middle of the battery cell. During the above welding, only one welding mechanism 2 can be used, or both welding mechanisms 2 can be used simultaneously, depending on the welding needs. In addition, in other embodiments, the number of welding mechanisms 2 can also be set to more than two. Similarly, multiple welding components 22 are arranged above the busbar along the length of the busbar, so that more welding strips or more battery cells can be welded simultaneously according to actual needs.

[0031] like Figures 3 to 5 As shown, the correction mechanism 1 includes at least two sliding seats 10 and a first driving member (not shown) connected to the sliding seats 10. The at least two sliding seats 10 are disposed opposite each other at both ends of the busbar. The first driving member is used to drive the sliding seats 10 to slide along the length direction of the busbar and to clamp the two sliding seats 10 at both ends of the busbar along the length direction. The correction mechanism 1 also includes a first slider 11 and a second driving member (not shown) connected to the first slider 11. At least two first sliders 11 are disposed opposite each other on each sliding seat 10. The second driving member is used to drive the first sliders 11 to slide along the width direction of the busbar and to clamp the two first sliders 11 at both ends of the busbar along the width direction. A first slide rail 31 is provided on the sliding seat 10. The extension direction of the first slide rail 31 is parallel to the width direction of the busbar. The first slide rail 31 extends along the width direction of the busbar. The first slider 11 is disposed on the first slide rail 31 and slides along the first slide rail 31. In this embodiment, the first slider 11 and the first slide rail 31 are both disposed on the opposite sidewalls of the two sliding seats 10. The first slide rail 31 can be a first slide groove disposed on the sidewall of the sliding seat 10. The first slider 11 is provided with a first guide block inserted into the first slide groove. The first slider 11 slides along the first slide groove through the first guide block. The cooperation between the first slide groove and the first guide block makes the sliding position of the first slider 11 more accurate, thereby improving the correction efficiency of the busbar in the width direction and making the fixing of the busbar in the width direction more reliable.

[0032] The correction mechanism 1 also includes a second slider 12 and a third driving member (not shown) connected to the second slider 12. The second slider 12 is mounted on the sliding seat 10. The third driving member drives the second slider 12 to slide along the height direction of the busbar and presses the second slider 12 against the busbar along the height direction. The second slider 12 extends along the width direction of the busbar, thus adapting the second slider 12 to the width direction of the busbar, resulting in a larger pressing area and better pressing effect when the second slider 12 presses against the busbar along the height direction. The sliding seat 10 is provided with a second slide rail 32, the extension direction of which is parallel to the height direction of the busbar. The second slider 12 is mounted on the second slide rail 32 and slides along the second slide rail 32. In this embodiment, the second slider 12 and the second slide rail 32 are both disposed on the opposite sidewalls of the two sliding seats 10. The second slide rail 32 can be a second slide groove disposed on the sidewall of the sliding seat 10. The second slide groove is disposed above the first slide groove and perpendicular to the first slide groove. The second slider 12 is provided with a second guide block inserted into the second slide groove. The second slider 12 slides along the second slide groove through the second guide block. The cooperation between the second slide groove and the second guide block makes the sliding position of the second slider 12 more accurate, thereby improving the correction efficiency of the busbar in the height direction and making the fixing of the busbar in the height direction more reliable. It should be noted that the first guide block is slidably embedded in the first slide groove, and the second guide block is slidably embedded in the second slide groove.

[0033] In this embodiment, two sliding seats 10 are provided, each sliding seat 10 having two first sliders 11 and one second slider 12. The second and third driving members can be disposed on or outside the sliding seats 10. The first, second, and third driving members can be cylinder assemblies or linear motor modules in the prior art. The cylinder assembly or linear motor module drives the two sliding seats 10 to slide along the length direction of the busbar and clamps the sliding seats 10 at both ends of the busbar along its length direction, thereby correcting and fixing the length direction of the busbar. A cylinder assembly or a linear motor module drives the first slider 11 to slide along the first slide rail 31 on the sliding seat 10 and clamp the busbar at both ends along its width direction to correct and fix the busbar in the width direction. A cylinder assembly or a linear motor module drives the second slider 12 to slide along the second slide rail 32 on the sliding seat 10 and press the busbar along its height direction to correct and fix it in the height direction. In this way, the sliding seat 10, the first slider 11, and the second slider 12 correct and fix the busbar in the length, width, and height directions, achieving comprehensive, precise, and reliable correction and fixation. Furthermore, the first, second, and third driving components can be connected to the control system on the photovoltaic module production line to facilitate control of the first, second, and third driving components and improve busbar welding efficiency.

[0034] like Figure 2 As shown, the telescopic component 21 includes several telescopic shafts 211, and welded components 22 are connected to the ends of the telescopic shafts 211. The welded components 22 and the telescopic shafts 211 are positioned above the busbar. The telescopic shafts 211 can be driven to extend and retract by a telescopic drive component (not shown). The telescopic drive component can be a cylinder, motor, or other power component. The telescopic drive component can be connected to the control system on the photovoltaic module production line to facilitate the control of the telescopic drive component and improve the busbar welding efficiency. The busbar welding device also includes a base plate 4. The alignment mechanism, busbar, and welding strip are mounted on the base plate 4. The base plate 4 is used to support the sliding seat 10, the busbar, and the welding strip of the photovoltaic module. A third slide rail 33 is provided on the base plate 4. The third slide rail 33 extends along the length direction of the busbar. The sliding seat 10 is mounted on the third slide rail 33 and slides along the third slide rail 33. In this embodiment, the third slide rail 33 can be a third slide groove on the base plate 4. The sliding seat 10 is provided with a third guide block inserted into the third slide groove. The sliding seat 10 slides along the third slide groove through the third guide block. The cooperation between the third slide groove and the third guide block makes the sliding position of the sliding seat 10 more accurate, thereby improving the correction efficiency of the busbar along the length direction, and at the same time, the fixing of the busbar along the length direction is more reliable.

[0035] The busbar welding device also includes a support mechanism 5, which is mounted on the base plate 4. A telescopic member 21 is mounted on the support mechanism 5, which supports the welding mechanism 2. In this embodiment, the support mechanism 5 is a portal frame. The bottom ends of the portal frame are fixed to the base plate 4. The alignment mechanism 1 and the welding mechanism 2 are located inside the portal frame. The alignment mechanism 1 is located on both sides inside the portal frame, and the welding mechanism 2 is located at the top and middle of the portal frame. The telescopic drive member can be mounted on the portal frame, and the first drive member can be mounted on either the portal frame or the base plate 4.

[0036] This utility model's busbar welding device can be installed in the rework area before the photovoltaic module layer to weld busbars for cells undergoing rework. It can also be used to weld busbars for other cells requiring welding, depending on actual production needs. During welding, the newly cut busbar 100 is placed on the base plate 4 corresponding to the third slide rail 33. Then, two sliding seats 10 slide on the third slide rail 33 and clamp the busbar 100 at both ends along its length. Simultaneously, the first slider 11 slides on the first slide rail 31 and clamps the busbar 100 at both ends along its width. The second slider 12 slides on the second slide rail 32 and presses the busbar 100 along its height. This achieves comprehensive, precise, and reliable alignment and fixation of the busbar 100 from three directions: length, width, and height, improving welding efficiency. To ensure the reliability of the connection, the battery cell 300 or battery string 300 to be welded is placed on the base plate 4 and positioned corresponding to the busbar 100. Finally, the telescopic shaft 211 extends and drives the welding part 22 to descend, welding the busbar 100 and the welding strip 200. This can realize the welding of single or multiple strings of half or full battery cells 300, as well as the simultaneous welding of multiple welding strips of multi-busbar or multi-busbar battery cells 300, improving the busbar welding efficiency and replacing manual welding of each welding strip. It can achieve efficient, reliable, time-saving and aesthetically pleasing busbar welding.

[0037] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0038] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A busbar welding device, characterized in that, It includes a straightening mechanism and at least two welding mechanisms. The straightening mechanism can be used to straighten and fix the busbar along the length, width and height directions. The welding mechanism includes a telescopic member and a welding member connected to the end of the telescopic member. The welding member is arranged along the length direction of the busbar. The telescopic member extends and retracts to drive the welding member to rise and fall, so that the welding member welds the busbar and the welding strip.

2. The busbar welding device according to claim 1, characterized in that, The correction mechanism includes at least two sliding seats and a first driving member connected to the sliding seats. The at least two sliding seats are disposed opposite to each other at both ends of the busbar. The first driving member is used to drive the sliding seats to slide along the length direction of the busbar and to clamp the two sliding seats at both ends of the busbar along the length direction.

3. The busbar welding device according to claim 2, characterized in that, The correction mechanism further includes a first slider and a second driving member connected to the first slider. At least two first sliders are disposed opposite each other on each sliding seat. The second driving member is used to drive the first slider to slide along the width direction of the busbar and to clamp the two first sliders at both ends of the busbar along the width direction.

4. The busbar welding device according to claim 3, characterized in that, The sliding seat is provided with a first slide rail, the extension direction of the first slide rail is parallel to the width direction of the busbar, and the first slider is disposed on the first slide rail and slides along the first slide rail.

5. The busbar welding device according to claim 2, characterized in that, The correction mechanism further includes a second slider and a third driving member connected to the second slider. The second slider is disposed on the sliding seat, and the third driving member is used to drive the second slider to slide along the height direction of the busbar and to press the second slider against the busbar along the height direction.

6. The busbar welding device according to claim 5, characterized in that, The sliding seat is provided with a second slide rail, the extension direction of the second slide rail is parallel to the height direction of the busbar, and the second slider is disposed on the second slide rail and slides along the second slide rail.

7. The busbar welding device according to claim 5, characterized in that, The second slider extends along the width direction of the busbar.

8. The busbar welding device according to claim 1, characterized in that, The length direction of the welded component extends along the length direction of the busbar.

9. The busbar welding device according to claim 2, characterized in that, The device also includes a base plate, on which the alignment mechanism, the busbar and the welding strip are disposed. A third slide rail is provided on the base plate, and the sliding seat is disposed on the third slide rail and slides along the third slide rail.

10. The busbar welding device according to claim 9, characterized in that, The device also includes a support mechanism, which is disposed on the base plate, and the telescopic member is disposed on the support mechanism.

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