Solar cell module production system

Abstract

The utility model discloses a solar cell module production system, the solar cell module production system comprises a moving assembly, a welding assembly and a carrying assembly, the moving assembly comprises a first moving table and a first adsorption mechanism, the first adsorption mechanism can adsorb a cell to the first moving table, and the first moving table is provided with a second adsorption mechanism. The carrying assembly comprises a second moving table and a second adsorption mechanism, the second adsorption mechanism can suck the welded battery strings to the second moving table from the first moving table, and the second moving table can move the battery strings out of the first moving table. By the adoption of the welding strip straightening device, the battery can be continuously kept flat, warping is avoided, repeated straightening is not needed, the welding strip is prevented from being bent, and the yield of the battery can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell module production, in particular to a solar cell module production system. Background Art

[0002] The BC (Back Contact) cell, namely the back contact cell, is a general term for current crystalline silicon solar cells with various back contact structures. Its emitter electrode and base electrode are both located on the back, so the shading loss of the front grid lines can be eliminated, and the cell efficiency can be improved. It is considered to be the mainstream product of future crystalline silicon cells. Since the positive and negative electrodes of the BC cell are on the same side, when welding the BC cell, only one side of the cell needs to be welded. However, due to the heat concentrating on one side of the cell, a large thermal stress will be generated on this side. Therefore, after welding, the BC cell is prone to warping. The warped cell panel is prone to risks such as misalignment, solder joint detachment, and cell displacement during subsequent processes such as positioning, plate placement, bus bar welding, transfer, and lamination. Moreover, most existing cell production lines use conveyors to transfer the cells between workstations. When the solder tapes at both ends of the cell string after series welding pass through the connection points of the conveyor, they are prone to bending, thus affecting the yield of the cells. Although some existing cell production lines straighten the cell wafers by adding pressing plates and meshes, this straightening method cannot ensure that the cell wafers remain flat throughout the process. After transferring to a different workstation or being conveyed on different conveyors, the cell wafers need to be straightened repeatedly, and the repeated bending of the cell wafers will increase the risk of hidden cracks and fragmentation, thus affecting the yield of the cells. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a solar cell module production system, which can keep the cells flat continuously, avoid warping and repeated straightening, avoid bending of the solder tapes, and improve the yield of the cells.

[0004] To solve the above technical problem, the utility model provides a solar cell module production system, which includes a moving component, a welding component, and a handling component.

[0005] The moving component includes a first moving table and a first adsorption mechanism. The first adsorption mechanism is used to adsorb the cell wafer on the first moving table, and the first moving table is used to carry the cell wafer to the welding station.

[0006] The welding component is used to weld the cell wafers on the first moving table to form a cell string;

[0007] The handling component includes a second moving platform and a second adsorption mechanism. The second adsorption mechanism is used to adsorb the battery string to the second moving platform when the first adsorption mechanism adsorbs the battery string, and the second moving platform is used to move the battery string to the lamination station when the first adsorption mechanism releases the battery string.

[0008] As an improvement of the above solution, the first adsorption mechanism includes a first suction hole, which is arranged on the first moving platform and is used to adsorb the battery to the first moving platform.

[0009] As an improvement of the above solution, the first adsorption mechanism further includes a first channel and a negative pressure generating member, and the negative pressure generating member is communicated with the first suction hole through the first channel.

[0010] As an improvement of the above solution, the moving component further includes a first adsorption surface and a first track. The first adsorption surface is arranged on the upper surface of the first moving platform, the first suction hole is arranged on the first adsorption surface, and the first moving platform can move along the first track.

[0011] As an improvement of the above solution, the second moving platform includes a second adsorption surface, and the second adsorption mechanism includes a second suction hole, which is arranged on the second adsorption surface and can adsorb the battery string to the second adsorption surface.

[0012] As an improvement of the above solution, the second adsorption mechanism further includes a second channel and a negative pressure system, and the negative pressure system is communicated with the second suction hole through the second channel.

[0013] As an improvement of the above solution, the handling component further includes a second track, the second moving platform is connected to the second track, and the second moving platform can move along the second track.

[0014] As an improvement of the above solution, a backplane is provided at the lamination station, a connecting film is arranged on the surface of the backplane, and the handling component is used to transfer the battery string to the lamination station and place the battery string on the connecting film so that the connecting film is bonded to the battery string.

[0015] As an improvement of the above solution, the handling component further includes a heating mechanism, which is arranged in the second moving platform. The heating mechanism includes a heating element, and the heat transfer part of the heating element is used to abut against the battery string and transfer heat to the connecting film through the battery string.

[0016] As an improvement of the above solution, the second adsorption mechanism is further used to release the battery string after the connecting film is bonded to the battery string for a preset time.

[0017] As an improvement of the above solution, the heating mechanism further includes an elastic member. One end of the elastic member is connected to the second moving table, and the other end is connected to the heating member. The heat transfer part of the heating member protrudes from the surface of the second adsorption surface. When the heat transfer part of the heating member abuts against the battery, the elastic member is compressed.

[0018] Implementing the present utility model has the following beneficial effects:

[0019] The solar cell module production system of the present utility model is provided with a moving assembly, a welding assembly, and a handling assembly. Before welding the battery wafers, the battery wafers are placed on the first moving table of the moving assembly, and the first adsorption mechanism adsorbs the battery wafers on the first moving table. Therefore, before welding, the battery wafers can be kept flat on the first moving table. When the welding assembly welds the battery wafers, the first adsorption mechanism keeps adsorbing the battery wafers. Therefore, during welding, the battery wafers can be kept flat. After welding, the second adsorption mechanism of the handling assembly adsorbs the battery string on the second moving table, and the second moving table transfers the battery string out. During this process, the second adsorption mechanism can continuously adsorb the battery string on the surface of the second moving table. Therefore, after welding, the battery string can be kept flat, so that the battery string can be continuously kept flat before and after welding, avoiding warping and eliminating the need for repeated straightening. When the battery string moves between the moving assembly and the handling assembly, the situation where the welding tape falls into the conveyor belt connection will not occur. Moreover, it can be kept flat throughout the process, so the welding tape will not be bent, thereby improving the yield of battery string production. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the solar cell module production system of the present utility model;

[0021] Figure 2 is a schematic cross-sectional structural diagram of the moving assembly of the present utility model;

[0022] Figure 3 is a schematic exploded view of the handling assembly of the present utility model for transporting the battery to the backplane;

[0023] Figure 4 is Figure 3 a partial enlarged view of A in Detailed Embodiments

[0024] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the orientation terms such as up, down, left, right, front, back, inside and outside that appear or will appear in the text of the present utility model are only based on the accompanying drawings of the present utility model and do not specifically limit the present utility model.

[0025] Referring to Figure 1 and Figure 2 , an embodiment of the present utility model discloses a solar cell module production system for transporting, welding and arranging cells 10. The solar cell module production system includes a moving component 1, a welding component 2 and a handling component 3. Before welding, the cell wafers 9 are placed on the moving component 1. The cell wafers 9 are preferably back contact cells, and the emitter electrodes and base electrodes of the back contact cells are both located on the back surface, so that the electrodes can be welded on the same side of the cell wafers 9. The cell wafers 9 can be formed by arranging multiple cells. The moving component 1 can drive the cell wafers 9 to move to the welding station 6, and the welding component 2 welds the cell wafers 9. Among them, the moving component 1 includes a first moving table 11 and a first adsorption mechanism 12. The first adsorption mechanism 12 can adsorb multiple cell wafers 9 on the first moving table 11. By adsorbing one or more positions of the cell wafers 9, the cell wafers 9 can be made to abut against the first moving table 11, so as to achieve the flatness of the cell wafers 9 before welding. Exemplarily, the number of the first moving tables 11 is multiple. The first moving table 11 can move between different stations. Before welding the cell wafers 9, the first moving table 11 brings multiple cell wafers 9 to the welding station 6. During the moving process, the first adsorption mechanism 12 can maintain the adsorption of the cell wafers 9, and the welding component 2 can weld the cell wafers 9 on the first moving table 11 to form a cell string 10 by series welding multiple cell wafers 9. During the welding process, the first adsorption mechanism 12 will maintain the adsorption of the cell wafers 9, so that the cell wafers 9 also continuously remain flat before and during welding. The handling component 3 includes a second moving table 31 and a second adsorption mechanism 32. The second adsorption mechanism 32 is used to adsorb the cell string 10 to the second moving table 31 when the first adsorption mechanism 12 adsorbs the cell string 10. The second moving table 31 can move the cell string 10 out of the first moving table 11 and move the cell string 10 to the lamination station 7 (which can also be the arranging station). During the process of moving out the cell string 10, the second adsorption mechanism 32 can continuously adsorb the cell string 10, so that multiple positions of the cell string 10 remain flat. Therefore, during the processes before, during and after welding, the cell string 10 can achieve continuous flatness and avoid warping.

[0026] The beneficial effects of the embodiments of the present utility model are as follows:

[0027] The solar cell module production system of the embodiments of the present utility model is provided with a moving component 1, a welding component 2 and a handling component 3. Before welding the battery wafers 9, the battery wafers 9 are placed on the first moving table 11 of the moving component 1, and the battery wafers 9 are adsorbed on the first moving table 11 by the first adsorption mechanism 12. Therefore, before welding, the battery wafers 9 can be kept flat on the first moving table 11. When the welding component 2 welds the battery wafers 9, the first adsorption mechanism 12 keeps adsorbing the battery wafers 9. Therefore, during welding, the battery wafers 9 can be kept flat. After welding, the second adsorption mechanism 32 of the handling component 3 adsorbs the welded battery string 10 on the second moving table 31, and the second moving table 31 transfers the battery string 10 out. During this process, the second adsorption mechanism 32 can continuously adsorb the battery string 10 on the surface of the second moving table 31. Therefore, after welding, the battery string 10 can be kept flat, so that the battery string 10 can be continuously kept flat before and after welding, warping can be avoided and repeated straightening is not required. Moreover, when the battery string 10 moves between the moving component 1 and the handling component 3, the situation that the welding tape falls into the conveyor belt connection will not occur, and the battery string 10 can be kept flat throughout the process. Therefore, the welding tape will not be bent, thereby improving the yield of the production of the battery string 10.

[0028] Specifically, referring to Figure 2 , the first adsorption mechanism 12 includes first suction holes 121 which are arranged on the first moving table 11. The number of the first suction holes 121 is multiple and they are evenly distributed on the first moving table 11, and can adsorb and fix multiple parts of the battery wafers 9. The first suction holes 121 can adsorb the battery wafers 9 on the first moving table 11, on the one hand, keep continuous fixation of the battery wafers 9, and on the other hand, can avoid warping during subsequent welding and after welding. The first adsorption mechanism 12 further includes a first channel 122 and a negative pressure generating member 123. The negative pressure generating member 123 is communicated with the first suction holes 121 through the first channel 122. The negative pressure generating member 123 is preferably a vacuum pump and can generate negative pressure on the first suction holes 121 through the first channel 122.

[0029] Further, the moving component 1 further includes a first adsorption surface 13 and a first track 14. The first adsorption surface 13 is provided on the upper surface of the first moving platform 11. The solar cell 9 is placed on the first adsorption surface 13, and the first suction holes 121 are provided on the first adsorption surface 13, which can directly generate an adsorption effect on the solar cell 9. The first moving platform 11 can move along the first track 14, and the first track 14 extends from the sheet placing station 5 to the series connection station 8. After the solar cell 9 is placed, the first moving platform 11 moves the solar cell 9 from the sheet placing station 5 to the welding station 6 along the first track 14. Different from the traditional conveyor belt transportation, the first moving platform 11 can move as a whole, and the solar cell 9 moves with the first moving platform 11. Before the welding is completed, the solar cell 9 does not leave the first moving platform 11, so as to ensure that the first moving platform 11 can continuously adsorb and fix the solar cell 9.

[0030] See Figure 3 and Figure 4 , the second moving platform 31 adsorbs the battery string 10 transferred to the series connection station 8 after welding from top to bottom. A second adsorption surface 33 is provided on the lower surface of the second moving platform 31. The second adsorption mechanism 32 includes second suction holes 321, and the second suction holes 321 are provided on the second adsorption surface 33. The second suction holes 321 can adsorb the battery string 10 on the second adsorption surface 33. After the solar cell 9 is welded, the first moving platform 11 brings the battery string 10 to the series connection station 8. During this process, the second adsorption mechanism 32 maintains the adsorption of the battery string 10, so that after the battery string 10 is welded, it can still be affected by the adsorption force and abut against the second adsorption surface 33. The second adsorption mechanism 32 plays a role in keeping the battery string 10 continuously flat.

[0031] The second adsorption mechanism 32 further includes a second channel 322 and a negative pressure system 323. The negative pressure system 323 is communicated with the second suction holes 321 through the second channel 322. The negative pressure system 323 is preferably a system with a vacuum pump and a regulating valve, which can generate negative pressure on the second suction holes 321 through the second channel 322, so as to form an adsorption force.

[0032] The handling component 3 further includes a second track 34, and the second moving platform 31 is connected to the second track 34. The second track 34 extends from the welding station 6 to the lamination station 7, and the second moving platform 31 can move along the second track 34, so as to take the battery string 10 away from the welding station 6.

[0033] The solar cell module production system further includes a lamination station 7, and a backsheet 4 is provided on the lamination station 7. The backsheet 4 is preferably a glass backsheet 4, and the glass backsheet 4 needs to be adhered to the battery string 10 to form a preliminary assembly. A connecting film 41 is provided on the surface of the backsheet 4. The connecting film 41 is preferably an EVA film, which can melt after heating. The connecting film 41 is located on the upper surface of the backsheet 4. The handling assembly 3 can transfer the battery string 10 that enters the lower string station 8 after welding to the lamination station 7 and place the battery string 10 on the connecting film 41, so that the battery string 10 is adhered to the connecting film 41. Optionally, after the battery string 10 is placed on the connecting film 41, the second adsorption mechanism 32 can maintain the adsorption and fixation of the battery string 10 and apply a certain degree of downward pressure to the battery string 10 to make the adhesion between the battery string 10 and the connecting film 41 stronger.

[0034] Among them, in other embodiments, refer to Figure 3 and Figure 4 , as a way to heat the connecting film 41, the handling assembly 3 further includes a heating mechanism 35, and the heating mechanism 35 is provided in the second moving platform 31. The heating mechanism 35 includes a heating element 351, and the heat transfer part of the heating element 351 can abut against the battery string 10. After the heating element 351 is turned on, the heat generated by the heating element 351 is transferred to the battery string 10 through the heat transfer part, and the heating element 351 can transmit the heat through the battery string 10 to the connecting film 41, so that the connection part of the connecting film 41 and the battery string 10 melts. The connecting film 41 is heated to produce a certain degree of melting (or micro-melting), so that the connecting film 41 is adhered to the battery string 10. Under the action of the connecting film 41, each position of the battery string 10 can be attached to the connecting film 41 to form a flat and non-warped effect. Therefore, during layout, even if the handling assembly 3 is removed, the battery string 10 can still be kept flat.

[0035] During the process of the heating mechanism 35 heating the connecting film 41, the second adsorption mechanism 32 maintains the adsorption and fixation of the battery string 10. Optionally, after the connecting film 41 and the battery string 10 are adhered for a preset time, the second adsorption mechanism 32 releases the battery string 10 to ensure the heating time and heating effect.

[0036] Further, in some embodiments, the heating mechanism 35 further includes an elastic member 352. One end of the elastic member 352 is connected to the second moving platform 31, and the other end is connected to the heating member 351. The heat transfer portion of the heating member 351 protrudes from the surface of the second adsorption surface 33. When the heat transfer portion of the heating member 351 abuts against the battery string 10, the elastic member 352 is compressed. The elastic member 352 can cause each battery cell in the battery string to be adsorbed on the second adsorption surface, and can ensure that the heat transfer portion of the heating member 351 can abut against the battery string 10, thereby improving the heating effect of the connection film 41.

[0037] It can be understood that the connection film 41 can also be heated in other ways. For example, a heating device can be provided at the lamination station 7 to heat the connection film 41.

[0038] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A production system for solar cell modules, characterized in that It includes a moving component, a welding component, and a handling component; The moving component includes a first moving table and a first adsorption mechanism. The first adsorption mechanism is used to adsorb the battery cell onto the first moving table, and the first moving table is used to carry the battery cell to the welding station; The welding component is used to weld the battery cells on the first moving table to form a battery string; The handling component includes a second moving table and a second adsorption mechanism. The second adsorption mechanism is used to adsorb the battery string onto the second moving table when the first adsorption mechanism adsorbs the battery string, and the second moving table is used to move the battery string to the lamination station when the first adsorption mechanism releases the battery string.

2. The solar cell module production system according to claim 1, wherein The first adsorption mechanism includes a first suction hole, and the first suction hole is arranged on the first moving table and is used to adsorb the battery onto the first moving table.

3. The solar cell module production system according to claim 2, characterized in that The first adsorption mechanism further includes a first channel and a negative pressure generating member, and the negative pressure generating member is communicated with the first suction hole through the first channel.

4. The solar cell module production system according to claim 2, characterized in that, The moving component further includes a first adsorption surface and a first track. The first adsorption surface is arranged on the upper surface of the first moving table, the first suction hole is arranged on the first adsorption surface, and the first moving table can move along the first track.

5. The solar cell module production system according to claim 1, characterized in that The second moving table includes a second adsorption surface, and the second adsorption mechanism includes a second suction hole. The second suction hole is arranged on the second adsorption surface and can adsorb the battery string onto the second adsorption surface.

6. The solar cell module production system according to claim 5, characterized in that, The second adsorption mechanism further includes a second channel and a negative pressure system, and the negative pressure system is communicated with the second suction hole through the second channel.

7. The solar cell module production system according to claim 1, wherein The handling component further includes a second track, and the second moving table is connected to the second track, and the second moving table can move along the second track.

8. The solar cell module production system according to claim 5, wherein, A backplane is provided at the lamination station, and a connecting film is arranged on the surface of the backplane. The handling component is used to transfer the battery string to the lamination station and place the battery string on the connecting film to bond the connecting film and the battery string.

9. The solar cell module production system according to claim 8, characterized in that, The handling component further includes a heating mechanism, and the heating mechanism is arranged in the second moving table. The heating mechanism includes a heating element, and the heat transfer part of the heating element is used to abut against the battery string and transfer heat to the connecting film through the battery string.

10. The solar cell module production system according to claim 9, characterized in that, The second adsorption mechanism is further used to release the battery string after the connecting film and the battery string are bonded for a preset time.

11. The solar cell module production system according to claim 9, characterized in that, The heating mechanism further includes an elastic member. One end of the elastic member is connected to the second moving table, and the other end is connected to the heating element. The heat transfer part of the heating element protrudes from the surface of the second adsorption surface. When the heat transfer part of the heating element abuts against the battery, the elastic member is compressed.

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