CN108598818A - L-type convergent belt, photovoltaic module and convergent belt lead apparatus for bending - Google Patents

Abstract

The invention discloses a kind of L-type convergent belts and a kind of photovoltaic module being provided with the L-type convergent belt, and are used to produce a kind of convergent belt lead apparatus for bending of above-mentioned L-type convergent belt in the production stock stage.The L-type convergent belt includes the first convergent belt for being placed on photovoltaic module head as wire box lead, it further include the second convergent belt that L-type is connected and composed with the first convergent belt, end on first convergent belt with the second confluence band connection is bending side, at bending side both ends, difference in height between plane where plane where first confluence band body and the second convergent belt is more than zero, so as to avoid cell piece that hidden split occurs in lamination process.Moreover, convergent belt lead apparatus for bending disclosed by the invention, can not only process the above-mentioned L-type convergent belt with bending side, and simple in structure, easy to operate, irreplaceable role is played in photovoltaic module stocks up operation.

Description

L-shaped bus belt, photovoltaic module and bus belt lead bending device

technical field

The present invention relates to the field of photovoltaic technology, in particular to an L-shaped confluence strip, a photovoltaic module provided with the L-shaped confluence strip, and a confluence strip lead bending used for producing the above-mentioned L-shaped confluence strip in the production preparation stage device.

Background technique

At present, the photovoltaic industry has entered an era of fierce competition. For each company, only by improving labor production efficiency, improving production quality, and reducing the fragmentation rate can it be in an invincible position in the competition.

In the prior art, in the L-shaped confluence strip located at the head of the photovoltaic module, the short confluence strip is used as the lead wire of the box and overlaps the two cells at the head of the photovoltaic module, which is very easy to cause this place during the lamination process. Cell cracks appear, which affects the product qualification rate.

Therefore, how to avoid cracks in the battery sheet during the lamination process is a technical problem to be solved urgently by those skilled in the art.

Contents of the invention

In view of this, the purpose of the present invention is to provide an L-shaped confluence strip and a photovoltaic module provided with the L-shaped confluence strip, as well as a confluence strip lead wire bender for producing the above-mentioned L-shaped confluence strip in the production preparation stage. Bending device, the above-mentioned L-shaped bus belt is beneficial to avoid cracks in the battery sheet during the lamination process.

To achieve the above object, the present invention provides the following technical solutions:

An L-shaped confluence strip, including a first confluence strip used to be placed on the head of a photovoltaic module as a wire box lead, and a second confluence strip connected to the first confluence strip to form an L shape, the first confluence strip The end of the belt connected to the second busbar is a bent surface, and at both ends of the bent surface, the height difference between the plane where the first busbar body is located and the plane where the second busbar is located is greater than zero .

Preferably, in the above-mentioned L-shaped busbar, the folded edges on both sides of the bent surface are parallel to the center line of the second busbar.

A photovoltaic module, comprising a battery sheet located at the head and an L-shaped busbar arranged on the battery sheet, the L-shaped busbar being the L-shaped busbar mentioned above.

A bending device for lead wires of a bus belt, used for processing the bending surface in the L-shaped bus belt described above, the bending device for lead wires of a bus belt includes:

The first module, the molding surface of the first module is provided with a stepped groove, the depth of the stepped groove is equal to the distance between the plane where the first busbar body is located and the plane where the second busbar is located in the L-shaped busbar height difference;

a second module adapted to the stepped slot;

A driving system for driving the mold closing of the first module and the second module.

Preferably, in the above bus strip lead bending device, it also includes:

a base, the second module is arranged on the base;

A support rod, the support rod is connected with the base to form an L shape, and the drive system is connected with the first module and arranged on the support rod.

Preferably, in the above-mentioned bending device for bus strip leads, the base is placed horizontally, and the support rod is placed vertically.

Preferably, in the bending device for busbar leads, the first module fits on the support bar and can slide up and down along the support bar, and the bottom of the stepped groove is located at the bottom of the first module. The end is far away from the side of the support bar, and the distance from the side wall of the stepped groove to the support bar is equal to the width of the second busbar;

The second module is a square block and is located below the stepped groove.

Preferably, in the above-mentioned bus strip lead bending device, the material of the base is aluminum alloy;

And/or, the first module and the second module are made of wear-resistant alloy.

Preferably, in the above bus strip lead bending device, the drive system includes:

a cylinder connected to said first module;

A switch connected to the cylinder.

Preferably, in the above busbar lead bending device, the switch is a foot switch.

It can be seen from the above technical solution that the L-shaped busbar and the photovoltaic module provided by the present invention can prevent the battery sheet from A crack occurs. Moreover, the busbar lead bending device provided by the present invention can not only process the above-mentioned L-shaped busbar with a bending surface, but also has a simple structure and convenient operation, and plays an irreplaceable role in the preparation of photovoltaic modules.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a three-dimensional structural schematic diagram of a busbar lead bending device provided by an embodiment of the present invention;

Fig. 2, Fig. 3, Fig. 4 are respectively the front view, side view and top view of the busbar lead bending device provided by the embodiment of the invention;

Fig. 5 is a partial enlarged view of area A in Fig. 2;

FIG. 6 is a comparison diagram of the effect of the L-shaped bus strip in the prior art before and after being bent by the bus strip lead bending device provided by the embodiment of the present invention.

in:

1-support rod, 2-cylinder, 3-bending upper module, 4-bending lower module, 5-base, 6-switch,

71-the first confluence zone, 72-the second confluence zone, 711-bending surface,

a - the width of the second busbar,

h - the height difference between the first confluence strip and the second confluence strip.

Detailed ways

The invention discloses an L-shaped confluence strip, a photovoltaic module provided with the L-shaped confluence strip, and a confluence strip lead bending device for producing the above-mentioned L-shaped confluence strip during the production preparation stage. The bus belt is beneficial to avoid cracks in the cells during the lamination process.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 6, the L-shaped busbar provided by the embodiment of the present invention includes a first busbar 71 for placing on the head of the photovoltaic module as a wire box lead, and also includes a L-shaped busbar connected to the first busbar 71. The second converging strip 72, the end of the first converging strip 71 connected to the second converging strip 72 is a bending surface 711, and at both ends of the bending surface 711, the plane where the first converging strip body is located and the second converging strip The height difference h between the planes where 72 is located is greater than zero.

For example, the above-mentioned "height difference h" is set to about 2 millimeters. However, it is not limited thereto. For the specific value of the above-mentioned "height difference h", those skilled in the art can make specific settings according to actual needs, so as to better avoid cell cracks caused by busbars during the lamination process.

Specifically, in the aforementioned L-shaped busbar, the folded edges on both sides of the bent surface 711 are parallel to the center line of the second busbar 72 .

In the process of producing photovoltaic modules, when the lamination process is carried out, since the connection between the first busbar 71 and the second busbar 72 is provided with a bending surface 711, when the first busbar 71 is subjected to an external force, the force is mainly Concentrate on the bending surface 711 (especially the folded edges on both sides of the bending surface 711), and the second bus strip 72 will not be directly stressed, so that the second bus strip 72 acts on the battery sheet directly below the extrusion The force is relatively small, which is conducive to avoiding the occurrence of cracks in the battery tray.

Moreover, the embodiment of the present invention also provides a photovoltaic module. The photovoltaic module includes a battery sheet at the head and an L-shaped busbar arranged on the battery sheet. The L-shaped busbar is the above-mentioned L-shaped busbar provided with the bending surface 711 . Since the bending surface 711 is provided in the L-shaped confluence strip, when the photovoltaic module is laminated during the production process, the cells are less likely to be cracked.

In addition, the embodiment of the present invention also provides a busbar lead wire bending device, which is used to process the bending surface 711 in the above-mentioned L-shaped busbar.

Please refer to Figure 1 to Figure 6 for details, Figure 1 is a three-dimensional structural schematic diagram of the busbar lead bending device provided by the embodiment of the present invention, and Figure 2, Figure 3, and Figure 4 are respectively the busbar lead bending device provided by the embodiment of the invention Figure 5 is a partial enlarged view of area A in Figure 2, and Figure 6 shows the L-shaped bus strip in the prior art after being folded by the bus strip lead bending device provided by the embodiment of the present invention Effect comparison before and after bending operation.

Specifically, the bus strip lead bending device provided by the embodiment of the present invention mainly includes a first module 3 and a second module 4 , and a driving system for driving the first module 3 and the second module 4 to close molds. Wherein, the molding surface of the first module 3 is provided with a stepped groove, and the shape of the second module 4 is adapted to the stepped groove, and the depth of the stepped groove is equal to the plane where the first busbar body is located in the L-shaped busbar and the second The difference in height between the planes where the two busbars 72 are located is to punch out a bending surface 711 of a suitable height when the first module 3 and the second module 4 are molded together.

Further, the above-mentioned bending device for bus strip leads also includes a base 5 and a support rod 1 . Among them, the support rod 1 is connected to the base 5 to form an L shape; the second module 4 is fixedly connected to the base 1 and is located below the stepped groove on the first module 3; the drive system is connected to the first module 3 and arranged on the support rod 1 on.

Preferably, the second module 4 is set as a square block, fixedly connected to the base 1 , and located below the stepped groove on the first module 3 . And the groove bottom of this stepped groove is positioned at the bottom of the first module 3 on the side far away from the support rod 1, and the distance a from the side wall of the stepped groove to the support rod 1 is equal to the width of the second bus strip 72 (because the second module 4 is adapted to the stepped groove, so the distance from the side wall of the second module 4 to the support rod 1 is also a). Therefore, during processing, the L-shaped confluence strip is directly placed on the second module 4, and the second confluence strip 72 (longer than the first confluence strip 71) in the L-shaped confluence strip is pushed to the support rod 1 to abut against it (In order to ensure that the folded edges on both sides of the bent surface 711 are parallel to the centerline of the second confluence strip 72), the bent surface 711 can be processed at a suitable position without multiple adjustments.

Specifically, the above-mentioned driving system includes the cylinder 2 and the switch 6, and, for the convenience of operation, the switch 6 adopts a foot switch. Wherein, the cylinder body of the cylinder 2 is fixed on the support rod 1, the drive rod of the cylinder 2 is connected with the first module 3 to drive the first module 3 to move closer to the second module 4 for mold closing movement, and the switch 6 is connected with the cylinder 2 to control Opening and closing of cylinder 2.

Specifically, in the above busbar lead wire bending device, the base 5 is preferably made of aluminum alloy, and the materials of the first module 3 and the second module 4 are both made of wear-resistant alloy.

But it is not limited to this, for the structure and driving form of the driving system, as well as the specific structure and material of the base 5, the support rod 1, the first module 3 and the second module 4, those skilled in the art can make specific settings according to actual needs , the present invention does not specifically limit it.

The specific operation process of the busbar lead bending device provided in the embodiment of the present invention is as follows:

The base 5 is placed horizontally, and the support rod 1 is placed vertically;

Place the L-shaped confluence belt on the second module 4, and push the second confluence belt 72 to the support rod 1 to resist the support rod 1. At this time, the distance from the side wall of the stepped groove to the support rod 1, the second module The distance from the side wall of 4 to the support bar 1 is equal to the width of the second confluence strip 72;

Start the cylinder 2 through the switch 6 to control the first module 3 to slide down against the support rod 1 until the mold clamping with the second module 4 is completed. The height difference h between the planes where the confluence strip 72 is located;

The cylinder 2 controls the first module 3 to slide up against the support rod 1, and it can be found that the bending surface 711 is processed on the L-shaped confluence belt.

In summary, the L-shaped bus strip and the photovoltaic module provided by the embodiments of the present invention can avoid cracks in the cells during the lamination process. Moreover, the busbar lead bending device provided by the embodiment of the present invention can not only process the above-mentioned L-shaped busbar with a bending surface, but also has a simple structure and easy operation, and plays an irreplaceable role in the preparation of photovoltaic modules.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. a kind of L-type convergent belt includes the first convergent belt (71) for being placed on photovoltaic module head as wire box lead, also It include the second convergent belt (72) that L-type is connected and composed with first convergent belt (71), which is characterized in that first convergent belt (71) end being connect with second convergent belt (72) on is bending side (711), described at the bending side (711) both ends Difference in height between plane where plane where band body and second convergent belt (72) of converging is more than zero.

2. L-type convergent belt according to claim 1, which is characterized in that the flanging of bending side (711) both sides is and institute State the centerline parallel of the second convergent belt (72).

3. a kind of photovoltaic module includes cell piece and the L-type convergent belt being arranged on the cell piece, feature positioned at head It is, the L-type convergent belt is claim 1 to 2 any one of them L-type convergent belt.

4. a kind of convergent belt lead apparatus for bending, which is characterized in that for processing the L-type convergent belt described in claim 2 In bending side (711), the convergent belt lead apparatus for bending includes：

First module (3), stepped groove is provided in the forming surface of first module (3), and the depth of the stepped groove is equal to institute Difference in height between plane where plane where stating the first confluence band body in L-type convergent belt and the second convergent belt (72)；

The second module (4) being adapted to the stepped groove；

Drive system for driving first module (3) and second module (4) to mold.

5. convergent belt lead apparatus for bending according to claim 4, which is characterized in that further include：

Pedestal (5), second module (4) are arranged on the pedestal (1)；

Supporting rod (1), the supporting rod (1) connect and compose L-type, the drive system and first mould with the pedestal (5) Block (3) connects and is arranged on the supporting rod (1).

6. convergent belt lead apparatus for bending according to claim 5, which is characterized in that the pedestal (5) is horizontal positioned, institute Supporting rod (1) is stated to place vertically.

7. convergent belt lead apparatus for bending according to claim 5, which is characterized in that

First module (3) is bonded with the supporting rod (1), and can be slided up and down along the supporting rod (1), the stepped groove Slot bottom be located at side of the first module (3) bottom end far from the supporting rod (1), the side wall of the stepped groove to the branch The distance of strut (1) is equal to the width of second convergent belt (72)；

Second module (4) is square block, is located at below the stepped groove.

8. convergent belt lead apparatus for bending according to claim 5, which is characterized in that the material of the pedestal (5) is aluminium Alloy material；

And/or the material of first module (3) and second module (4) is antifriction alloy material.

9. according to claim 4 to 8 any one of them convergent belt lead apparatus for bending, which is characterized in that the drive system Including：

The cylinder (2) being connect with first module (3)；

The switch (6) being connect with the cylinder (2).

10. convergent belt lead apparatus for bending according to claim 9, which is characterized in that the switch (6) is foot-operated opens It closes.