CN209963074U

CN209963074U - Half photovoltaic cell processing section device

Info

Publication number: CN209963074U
Application number: CN201920465793.2U
Authority: CN
Inventors: 高拥刚; 陈兵斌; 孙召阳; 潘慧强; 叶遥; 尚宁; 李晖
Original assignee: ZHEJIANG TRUNSUN SOLAR CO Ltd
Current assignee: Zhejiang Beisheng Green Energy Technology Co., Ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2020-01-17
Anticipated expiration: 2029-04-09

Abstract

The utility model relates to the technical field of photovoltaic cell processing devices, in particular to a half photovoltaic cell processing and slicing device, which comprises a cutter, a laser scriber and a processing table for placing a cell, wherein the cutter is used for cutting the middle position and the edge position of the cell with a back grid line so as to form a notch and an interrupted back grid line; the scribing device is used for further processing the photovoltaic cell without reserving the laser scribing position, can conveniently cut and divide the photovoltaic cell, saves the step of manual breaking, does not need to carry out optimization improvement on the process and the equipment, and can effectively avoid the problems of hidden breakage, breakage and the like of the cell caused by the back grid line of the edge part in the welding process of half cells.

Description

Half photovoltaic cell processing section device

Technical Field

The utility model relates to a photovoltaic cell processingequipment technical field, especially a half photovoltaic cell processing section device.

Background

At present, because the resistance of each photovoltaic cell is relatively large, the power consumed by the resistance of each photovoltaic cell is also relatively large, that is, relatively large power loss is caused, and accordingly, the output power of each photovoltaic cell is reduced.

The photovoltaic cell is generally cut in a slicing mode by a laser scribing technology, but the existing laser scribing technology only manufactures a deep groove on the surface of a silicon wafer of the photovoltaic cell, and then the two parts are separated after cutting in a manual breaking mode by taking the deep groove as a guide. Generally, the cell sheet is broken and separated along the laser-scribed deep groove portion where the defect is the most severe after an external force is applied, but this manner easily causes the breakage of the cell sheet. In addition, because the photovoltaic cell in the prior art does not reserve a laser scribing position, when cutting, the back gate line in the middle is cut off in the cutting process, and the back gate line of the formed half cell is exposed at the edge part. When half-cell is used for series connection, the half-cell formed by cutting needs to be welded, and the problems of hidden cracking, breaking and the like of the cell are easily caused by the back gate line at the edge part in the welding process.

Disclosure of Invention

The utility model provides a half photovoltaic cell processing section device, this section device are used for carrying out further processing to foretell photovoltaic cell who does not reserve the laser scribing position, can reach convenient carry out the cutting burst to photovoltaic cell, have saved manual rupture step, need not again to carry out optimization improvement on the technology and the equipment, can effectually avoid half battery piece welding process in addition the battery piece that the back grid line of edge part leads to hidden split, fragmentation scheduling problem.

The utility model discloses the technical scheme who realizes above purpose does: the utility model provides a half photovoltaic cell processing section device, includes incision ware, laser scriber, places the processing platform of battery piece, thereby the incision ware is used for carrying out the incision to the intermediate position and the border position that the battery piece has back grid line and forms the breach and separate back grid line, and the centre and the border position of every back grid line all carry out the incision, the laser scriber is used for cutting the battery piece after the incision into two from the intermediate.

Preferably, the cutting piece of the cutter is a rectangular opening blade formed by integrally connecting four blades.

Preferably, the width range of the notch along the back grid line is 3mm-5 mm.

Preferably, the length of the notch along the laser scribing line ranges from 2mm to 5 mm.

Preferably, the processing table is provided with a cutting groove corresponding to the cutting position of the notching device, and the length and the width of the cutting groove are 1.2 times of those of the cut notch.

Preferably, the processing table is further provided with a sacrificial layer for avoiding laser scratching the processing table.

Preferably, the sacrificial layer can be a metal layer, a wood layer or a plastic layer.

Preferably, the notching device is arranged on the air cylinder, and the lifting of the notching device is controlled through the air cylinder.

The utility model has the advantages that: the slicing device is used for further processing the photovoltaic cell without reserving the laser scribing position, can conveniently cut and slice the photovoltaic cell, saves the step of manual breaking, does not need to carry out optimization improvement on the process and the equipment, and can effectively avoid the problems of hidden cracking, breaking and the like of the cell caused by the back gate line at the edge part in the welding process of the half cell Chipping and the like.

Drawings

Fig. 1 is a schematic structural view of a device for processing and slicing a half photovoltaic cell of the present invention;

fig. 2 is a schematic structural view of a cutting part of the device for processing and slicing a half photovoltaic cell of the present invention;

FIG. 3 is a schematic diagram of a cut photovoltaic cell structure;

the symbols of the elements in the figures are:

1-laser scriber, 2-cylinder, 21-cutter, 211-cutting piece, 3-processing table, 4-sacrificial layer, 5-notch, 6-back grid line and 7-laser scribing line.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the following description will explain specific embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and for a person skilled in the art, other drawings and other embodiments can be obtained without inventive effort, and the invention is not limited to this example.

Please refer to fig. 1 to 3, the embodiment of the present invention provides a half photovoltaic cell processing and slicing apparatus, including a cutter 21, a laser scriber 1, a processing platform 3 for placing a cell, wherein the cutter 21 is used for cutting the cell at the middle position and the edge position with a back grid line 6 to form a notch 5 to separate the back grid line 6, the middle and the edge position of each back grid line 6 are all cut, and the laser scriber 1 is used for cutting the cut cell into two pieces from the middle.

Marking a laser scribing line on the photovoltaic cell without a reserved laser scribing position to assist laser cutting, cutting a notch 5 at the intersection of the back gate line 6 and the laser scribing line 7 and the edge of the cell with the back gate line 6 by using a cutter 21 to avoid the back gate line 6 at the welding position of the half cell after cutting, and then cutting from the laser scribing line 7 by using a laser scriber 1.

The laser scriber 1 is used for cutting the battery piece, and various laser cutters such as the blue photovoltaic JLM45350ZMW and the intelligence-developing workshop can be used without special requirements.

In this example, the cutting piece 211 of the cutting device 21 is a rectangular blade integrally connected by four blades, and the rectangular blade can cut the notch 5 by directly pressing down.

In this example, the width of the notch 5 along the back gate line 6 ranges from 3mm to 5 mm.

Certainly, the above range is a preferable range value, different widths of the notch 5 along the back gate line 6 may be generated according to different welding devices in actual production, and only the back gate line 6 does not affect the welding of the battery piece.

In this example, the length of the notch 5 along the laser scribe line 7 is in the range of 2mm to 5 mm.

The length of the notch 5 of the battery piece along the laser scribing line 7 can be adjusted, the length of the notch 5 must be larger than the width of the back grid line 6, otherwise, the edge of the battery piece still has the back grid line 6, but the length cannot be too long, otherwise, the welding effect is not good.

In this example, the processing table 3 is provided with a cutting groove corresponding to the cutting position of the cutter 21, and the length and width of the cutting groove are 1.2 times of those of the cut notch 5.

The size of the cutting groove is larger than that of the notch 5 and smaller than that of the battery piece. The size of the cutting groove is preferably adjusted according to the actual situation, and the cutting member 211 is not cut on the processing table 3.

In this example, the processing table 3 is further provided with a sacrificial layer 4 for avoiding laser damage to the processing table 3.

In this example, the sacrificial layer 4 may be a metal layer, a wood layer, or a plastic layer.

In this example, the cutter 21 is provided on the cylinder 2, and the elevation of the cutter 21 is controlled by the cylinder 2.

Specific embodiments of the present invention have been described above in detail. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by logical analysis, reasoning or limited experiments in the prior art, which are already known to those skilled in the art, should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a half photovoltaic cell processing section device, its characterized in that includes incision ware (21), laser scriber (1), places processing platform (3) of battery piece, incision ware (21) are used for carrying out the incision to the intermediate position and the border position that the battery piece has back grid line (6) thereby form breach (5) and separate back grid line (6), and the centre and the border position of every back grid line (6) all carry out the incision, laser scriber (1) are used for cutting the battery piece after the incision into two from the intermediate.

2. The device for processing and slicing half photovoltaic cells as claimed in claim 1, wherein the cutting member (211) of the cutter (21) is a rectangular-mouth blade integrally connected by four blades.

3. The device for processing and slicing half photovoltaic cells as claimed in claim 1, wherein the width of the notch (5) along the back gate line (6) is in the range of 3mm to 5 mm.

4. The half-sheet photovoltaic cell processing and slicing device according to claim 1, wherein the length of the notch (5) along the laser scribing line (7) is in the range of 2mm-5 mm.

5. The device for processing and slicing half photovoltaic cells as claimed in claim 1, wherein the processing table (3) is provided with a cutting groove corresponding to the cutting position of the cutter (21), and the length and width of the cutting groove are 1.2 times of the length and width of the cut notch (5).

6. The device for processing and slicing half photovoltaic cells as claimed in claim 5, wherein the processing table (3) is further provided with a sacrificial layer (4) for avoiding laser damage to the processing table (3).

7. The half-cell photovoltaic cell processing and slicing device according to claim 6, wherein the sacrificial layer (4) can be a metal layer, a wood layer or a plastic layer.

8. The device for processing and slicing half photovoltaic cells as claimed in claim 2, wherein the cutter (21) is arranged on the cylinder (2), and the lifting of the cutter (21) is controlled by the cylinder (2).