CN111180543A - Solar cell segmentation series welding process - Google Patents
Solar cell segmentation series welding process Download PDFInfo
- Publication number
- CN111180543A CN111180543A CN202010112205.4A CN202010112205A CN111180543A CN 111180543 A CN111180543 A CN 111180543A CN 202010112205 A CN202010112205 A CN 202010112205A CN 111180543 A CN111180543 A CN 111180543A
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- Prior art keywords
- connecting piece
- carrying
- solar cell
- piece
- conductive connecting
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- 238000003466 welding Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000011218 segmentation Effects 0.000 title claims description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 21
- 239000012634 fragment Substances 0.000 claims description 31
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000003698 laser cutting Methods 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims 4
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Manufacturing & Machinery (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a cutting series welding process of a solar cell, which comprises the steps of firstly cutting a whole cell into a plurality of pieces, then laying and cutting a conductive connecting piece on the pieces, and then splicing and series welding the pieces into a cell string. The invention can improve the whole cutting efficiency of the battery piece and improve the productivity of the battery piece; the invention can improve the cutting efficiency of the conductive connecting piece; the invention can improve the lapping efficiency, the welding efficiency and the productivity of the battery strings.
Description
Technical Field
The invention relates to the field of photovoltaics, in particular to a solar cell segmentation and series welding process.
Background
With the development of solar cell technology, a whole cell (such as a square sheet or a quasi-square sheet) is equally divided into a plurality of sub-sheets, and then a cell string is prepared by sub-sheets.
At present, the preparation of the partitioned battery string generally includes cutting the welding strip section by section, overlapping the partitioned battery string one by one, overlapping the welding strip on the previous partitioned battery string, cutting the welding strip, extending the small segment of the welding strip left on the partitioned battery string to the outer side of the partitioned battery string, overlapping the small segment of the welding strip on the partitioned battery string, and then, dividing the partitioned battery string into a plurality of sub-strings. Therefore, each time a piece is lapped, the welding strip needs to be cut once, so that the welding strip needs to be cut for many times when a battery string is lapped, and the battery string preparation efficiency is low.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a solar cell segmentation series welding process, which comprises the following steps of:
1) flatly placing the whole battery piece on the carrying platform group; the carrying platform group consists of a plurality of carrying platforms which are arranged at equal intervals in sequence along the left-right direction, and the carrying platforms are adsorption carrying platforms; the whole piece spans each carrying platform, and the back of the whole piece is upward;
2) carrying out laser scribing on the whole piece on the carrying table group, so that the whole piece is divided into a plurality of slicing areas which are sequentially arranged along the left-right direction, and two adjacent slicing areas are divided by a cutting groove formed by laser scribing; the slicing areas correspond to the carrying tables one by one, and the slicing areas are sucked by the corresponding carrying tables;
3) each carrying platform independently inclines a certain angle leftwards or rightwards, so that each cutting groove cracks in the process of inclining the carrying platforms on the two sides of the cutting groove; after each cutting groove is split, the slicing areas are respectively independent into slices; after the slicing areas respectively and independently form the slices, each carrying platform resets; one end of each of the left and right ends of each segment is a first end, and the other end of each segment is a second end;
4) the distance between two adjacent sub-sheets is adjusted by adjusting the distance between the carrying platform in the left-right direction, so that the distance between the two adjacent sub-sheets reaches the preset width;
5) laying a strip-shaped or strip-shaped conductive connecting piece on the top surface of each segment along the left-right direction, wherein the conductive connecting piece spans the first end and the second end of each segment;
6) respectively welding the conductive connecting piece and the top surface of each segment together;
7) laser cutting is carried out on the conductive connecting piece along the first end edge line of each fragment, so that the conductive connecting piece is divided into a plurality of connecting piece small sections which correspond to the fragments one by one; the connecting piece small sections on the sub-pieces extend out of the second ends of the sub-pieces, and the parts of the connecting piece small sections, which are positioned at the outer sides of the second ends of the sub-pieces, are used as the extension parts of the connecting piece small sections;
8) overlapping the fragments which are sequentially arranged along the left and right direction into a battery string, and overlapping the first ends of the fragments with the adjacent fragments, and overlapping the bottom surfaces of the first ends of the fragments on the extension parts of the connecting piece segments of the adjacent fragments;
9) the whole battery string is transferred to the conveying belt, the battery string on the conveying belt is heated and welded, the bottom surface of the first end of each fragment is welded with the extending portion of the small section of the connecting piece of the adjacent fragment, and the whole battery string is welded.
Preferably, in step 3), each segment is provided with a front electrode, and the front electrode is located on the bottom surface of the first end of the segment.
Preferably, in step 4), the predetermined width is not smaller than a width of the front electrode in the left-right direction.
Preferably, in step 5), the conductive connecting member is a welding strip or a welding rod.
Preferably, in step 6), the welding is performed by laser spot welding.
Preferably, in step 6), the conductive connecting piece is pressed by a pressing piece during welding, so that the conductive connecting piece is flatly attached to the sub-piece.
Preferably, in step 9), infrared heating is used for heating welding.
The invention has the advantages and beneficial effects that:
1) the invention can improve the whole cutting efficiency of the battery piece and improve the productivity of the battery piece;
2) the invention can improve the cutting efficiency of the conductive connecting piece;
3) the invention can improve the lapping efficiency of the battery strings;
4) the invention can improve the welding efficiency of the battery string;
5) the invention can improve the productivity of the battery string.
Detailed Description
The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The invention provides a solar cell segmentation series welding process, which comprises the following steps:
1) flatly placing the whole battery piece on the carrying platform group; the carrying platform group consists of a plurality of carrying platforms which are arranged at equal intervals in sequence along the left-right direction, and the carrying platforms are adsorption carrying platforms; the whole piece spans each carrying platform, and the back of the whole piece is upward; the whole battery piece can be rectangular, and the length direction of the whole battery piece is arranged along the left-right direction;
2) carrying out laser scribing on the whole piece on the carrying table group, so that the whole piece is divided into a plurality of slicing areas which are sequentially arranged along the left-right direction, and two adjacent slicing areas are divided by a cutting groove formed by laser scribing; the slicing areas correspond to the carrying tables one by one, and the slicing areas are sucked by the corresponding carrying tables;
3) each carrying platform independently inclines a certain angle leftwards or rightwards, so that each cutting groove cracks in the process of inclining the carrying platforms on the two sides of the cutting groove; after each cutting groove is split, the slicing areas are respectively independent into slices; after the slicing areas respectively and independently form the slices, each carrying platform resets; one end of each of the left and right ends of each segment is a first end, and the other end of each segment is a second end; specifically, the first end of each connecting piece segment may be a left end, and the second end of each connecting piece segment may be a right end; or the first end of each connecting piece segment is the right end, and the second end of each connecting piece segment is the left end; each sub-piece is provided with a front electrode, and the front electrode is positioned on the bottom surface of the first end of the sub-piece (the front electrode is prepared on the whole primary cell piece);
4) the distance between two adjacent sub-sheets is adjusted by adjusting the distance between the carrying platform in the left-right direction, so that the distance between the two adjacent sub-sheets reaches the preset width; the preset width can be determined according to actual needs, and the preset width is not less than the width of the front electrode in the left-right direction;
5) laying a strip-shaped or strip-shaped conductive connecting piece on the top surface of each segment along the left-right direction, wherein the conductive connecting piece spans the first end and the second end of each segment; the conductive connecting piece can be a welding strip or a welding rod;
6) respectively welding the conductive connecting piece and the top surface of each segment together; the welding adopts laser spot welding; during welding, the pressing piece is adopted to press the conductive connecting piece, so that the conductive connecting piece is flatly attached to the sub-piece; after the welding is finished, the pressing piece is removed;
7) laser cutting is carried out on the conductive connecting piece along the first end edge line of each fragment, so that the conductive connecting piece is divided into a plurality of connecting piece small sections which correspond to the fragments one by one (the connecting piece small sections are sequentially arranged along the left and right directions), the connecting piece small sections on the fragments all extend out of the second end of the corresponding fragment, and the part of the connecting piece small section, which is positioned outside the second end of the corresponding fragment, is taken as the extension part of the connecting piece small section; at the moment, the slices are sequentially arranged along the left and right direction, the top surface of each slice is welded with a connecting piece small section, and the connecting piece small section on each slice is provided with an extension part (the connecting piece small sections are sequentially arranged along the left and right direction, and the extension parts of the connecting piece small sections are sequentially arranged along the left and right direction);
8) the method comprises the following steps that the fragments are overlapped with another fragment adjacent to the first end of the fragment, so that the fragments sequentially arranged in the left-right direction are overlapped to form a battery string, and when the fragments are overlapped with another adjacent fragment, the bottom surface of the first end of the fragment is overlapped on the extension part of the connecting piece segment of the other adjacent fragment;
9) the whole battery string is transferred to the conveying belt, the battery string on the conveying belt is subjected to infrared heating welding, the bottom surface of the first end of each segment is welded with the extension part of the small section of the connecting piece of another adjacent segment, and when all the lap joints are welded, the whole battery string is welded.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The solar cell segmentation series welding process is characterized by comprising the following steps of:
1) flatly placing the whole battery piece on the carrying platform group; the carrying platform group consists of a plurality of carrying platforms which are arranged at equal intervals in sequence along the left-right direction, and the carrying platforms are adsorption carrying platforms; the whole piece spans each carrying platform, and the back of the whole piece is upward;
2) carrying out laser scribing on the whole piece on the carrying table group, so that the whole piece is divided into a plurality of slicing areas which are sequentially arranged along the left-right direction, and two adjacent slicing areas are divided by a cutting groove formed by laser scribing; the slicing areas correspond to the carrying tables one by one, and the slicing areas are sucked by the corresponding carrying tables;
3) each carrying platform independently inclines a certain angle leftwards or rightwards, so that each cutting groove cracks in the process of inclining the carrying platforms on the two sides of the cutting groove; after each cutting groove is split, the slicing areas are respectively independent into slices; after the slicing areas respectively and independently form the slices, each carrying platform resets; one end of each of the left and right ends of each segment is a first end, and the other end of each segment is a second end;
4) the distance between two adjacent sub-sheets is adjusted by adjusting the distance between the carrying platform in the left-right direction, so that the distance between the two adjacent sub-sheets reaches the preset width;
5) laying a strip-shaped or strip-shaped conductive connecting piece on the top surface of each segment along the left-right direction, wherein the conductive connecting piece spans the first end and the second end of each segment;
6) respectively welding the conductive connecting piece and the top surface of each segment together;
7) laser cutting is carried out on the conductive connecting piece along the first end edge line of each fragment, so that the conductive connecting piece is divided into a plurality of connecting piece small sections which correspond to the fragments one by one; the connecting piece small sections on the sub-pieces extend out of the second ends of the sub-pieces, and the parts of the connecting piece small sections, which are positioned at the outer sides of the second ends of the sub-pieces, are used as the extension parts of the connecting piece small sections;
8) overlapping the fragments which are sequentially arranged along the left and right direction into a battery string, and overlapping the first ends of the fragments with the adjacent fragments, and overlapping the bottom surfaces of the first ends of the fragments on the extension parts of the connecting piece segments of the adjacent fragments;
9) the whole battery string is transferred to the conveying belt, the battery string on the conveying belt is heated and welded, the bottom surface of the first end of each fragment is welded with the extending portion of the small section of the connecting piece of the adjacent fragment, and the whole battery string is welded.
2. The solar cell slice dividing series welding process of claim 1, wherein in the step 3), each slice is provided with a front electrode, and the front electrode is located on the bottom surface of the first end of the slice.
3. The solar cell separation series welding process according to claim 2, wherein in the step 4), the predetermined width is not less than the width of the front electrode in the left-right direction.
4. The solar cell separation series welding process according to claim 1, wherein in the step 5), the conductive connecting member is a welding strip or a welding rod.
5. The solar cell slice dividing series welding process according to claim 1, wherein in the step 6), laser spot welding is adopted for welding.
6. The solar cell separation series welding process according to claim 1, wherein in the step 6), a pressing member is used for pressing the conductive connecting member during welding so that the conductive connecting member is flatly attached to the separation sheet.
7. The solar cell slice division series welding process according to claim 1, wherein in the step 9), the heating welding adopts infrared heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010112205.4A CN111180543A (en) | 2020-02-24 | 2020-02-24 | Solar cell segmentation series welding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010112205.4A CN111180543A (en) | 2020-02-24 | 2020-02-24 | Solar cell segmentation series welding process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111180543A true CN111180543A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010112205.4A Pending CN111180543A (en) | 2020-02-24 | 2020-02-24 | Solar cell segmentation series welding process |
Country Status (1)
| Country | Link |
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| CN (1) | CN111180543A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563361A (en) * | 2020-12-11 | 2021-03-26 | 常州时创能源股份有限公司 | Connecting piece and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545716A (en) * | 2018-11-23 | 2019-03-29 | 无锡奥特维科技股份有限公司 | A kind of slice sharding method and cell piece string welding machine |
| CN110459635A (en) * | 2018-05-04 | 2019-11-15 | 阿特斯阳光电力集团有限公司 | Photovoltaic module and its manufacturing method |
| CN110649126A (en) * | 2019-09-26 | 2020-01-03 | 常州时创能源科技有限公司 | Preparation method of battery string |
| CN110838527A (en) * | 2019-10-30 | 2020-02-25 | 江苏朗道新能源有限公司 | Cell for half-laminated tile photovoltaic module and manufacturing method of module |
-
2020
- 2020-02-24 CN CN202010112205.4A patent/CN111180543A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459635A (en) * | 2018-05-04 | 2019-11-15 | 阿特斯阳光电力集团有限公司 | Photovoltaic module and its manufacturing method |
| CN109545716A (en) * | 2018-11-23 | 2019-03-29 | 无锡奥特维科技股份有限公司 | A kind of slice sharding method and cell piece string welding machine |
| CN110649126A (en) * | 2019-09-26 | 2020-01-03 | 常州时创能源科技有限公司 | Preparation method of battery string |
| CN110838527A (en) * | 2019-10-30 | 2020-02-25 | 江苏朗道新能源有限公司 | Cell for half-laminated tile photovoltaic module and manufacturing method of module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563361A (en) * | 2020-12-11 | 2021-03-26 | 常州时创能源股份有限公司 | Connecting piece and application thereof |
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Application publication date: 20200519 |