CN113871503A - Novel flexible and rollable silicon-based solar module welding method - Google Patents
Novel flexible and rollable silicon-based solar module welding method Download PDFInfo
- Publication number
- CN113871503A CN113871503A CN202010604030.9A CN202010604030A CN113871503A CN 113871503 A CN113871503 A CN 113871503A CN 202010604030 A CN202010604030 A CN 202010604030A CN 113871503 A CN113871503 A CN 113871503A
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- 238000003466 welding Methods 0.000 title claims abstract description 77
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 21
- 239000010703 silicon Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000011241 protective layer Substances 0.000 claims abstract description 18
- 239000002313 adhesive film Substances 0.000 claims abstract description 11
- 239000003292 glue Substances 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 238000009826 distribution Methods 0.000 claims abstract description 5
- 238000003698 laser cutting Methods 0.000 claims abstract description 5
- 239000011521 glass Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 5
- 238000009713 electroplating Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 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
- H01L31/0508—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 the interconnection means having a particular shape
-
- 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
- H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
-
- 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)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Sustainable Development (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Sustainable Energy (AREA)
- Manufacturing & Machinery (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a novel flexible and rollable silicon-based solar module welding method, which comprises the following steps: cutting the battery piece into every N battery strings without splitting in a laser cutting mode; the hard protective layer is cut into N pieces according to the size of the small battery; covering the cut hard protective layer on the small battery strings subjected to glue dispensing by using automatic arrangement equipment to be attached to form small battery strings; arranging the small strings of battery pieces into small standard pieces according to the required size distribution, and covering with an adhesive film; the positive electrode and the negative electrode of the small standard piece covered with the adhesive film are simultaneously welded in series by automatic welding equipment to form a 1P standard piece; arranging the 1P standard parts by using automatic arrangement equipment, and mutually adhering and fixing adhesive films to form the 5P standard parts. According to the invention, the hard protective layer is firstly attached to the battery piece, and then welding operation is carried out, so that the safety performance is greatly improved, the crushing probability is reduced, the loss is reduced, the quality of a finished product is improved, and the production yield and the production automation degree are greatly improved.
Description
Technical Field
The invention relates to the technical field of solar modules, in particular to a novel flexible and rollable silicon-based solar module welding method.
Background
Traditional welding mode and technology, stereoplasm protective layer cover completely in the front of tiny cell piece, so will all weld the some glue laminating protective layer after the interconnector again, make tiny cell piece will carry out welding operation under the circumstances of not protecting, because silicon-based battery itself is breakable, the easy operation that causes the battery piece damage under the circumstances of not protecting influences finished product quality. The traditional welding mode is complicated in process of arranging and welding all the small batteries after being divided into pieces, the automation degree is low, and the production capacity is influenced.
Disclosure of Invention
Aiming at the problems, the invention provides the novel flexible and rollable silicon-based solar module welding method which is used for attaching the hard protective layer to the front surface of the silicon-based battery, so that the probability of small battery piece breakage is reduced, the production loss is reduced, and the quality of a finished product is improved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a novel flexible, reliable silicon-based solar module soldering method, comprising the steps of:
cutting the battery piece into every N battery strings without splitting in a laser cutting mode;
the hard protective layer is cut into N pieces according to the size of the small battery;
covering the cut hard protective layer on the small battery strings subjected to glue dispensing by using automatic arrangement equipment to be attached to form small battery strings;
arranging the small strings of battery pieces into small standard pieces according to the required size distribution, and covering with an adhesive film;
the positive electrode and the negative electrode of the small standard piece covered with the adhesive film are simultaneously welded in series by automatic welding equipment to form a 1P standard piece;
arranging the 1P standard parts by using automatic arrangement equipment, and mutually adhering and fixing adhesive films to form the 5P standard parts.
Furthermore, the solar cell is a silicon-based heterojunction solar cell and is cut into 13 cell strings.
Furthermore, each small battery of the small battery string is 12mm in length and 7.84mm in width, the positive electrode and the negative electrode of each small battery are respectively arranged at one end of the front surface and the back surface of the battery, the negative electrode welding point is opposite to or below the positive electrode welding point, and when the negative electrode welding point is right below the positive electrode welding point, the welded negative electrode welding strip can protect the positive electrode part which is not covered with the hard protection layer, so that the exposed part is prevented from being broken due to the fact that the exposed part is not protected.
Furthermore, the hard protective layer is made of transparent glass.
Further, the positive electrode and the negative electrode of the small standard sheet are simultaneously welded in series through automatic welding equipment to form a 1P standard part, the positive electrode welding strip adopts a square welding strip with the thickness of 0.3-0.4mm, and the negative electrode welding strip adopts a welding strip with the thickness of 0.1 X1.2m.
From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:
1. according to the invention, the hard protective layer is firstly attached to the battery piece, the chip is firstly protected, then the welding operation is carried out, the hard protective layer avoids the welding spot on the front surface of the battery piece, the safety performance of the small battery piece is greatly improved in the welding operation, the probability of breaking the small battery piece is reduced, the production loss is reduced, the quality of a finished product is improved, and the production yield and the production automation degree are greatly improved.
2. According to the invention, the welding spot of the cathode of the chip is designed under the anode of the chip, so that the part of the chip which is possibly fragile is protected, the reject ratio of the produced product is reduced, and the welding spot adopts an electroplating process, so that the reliability of the welding spot is improved.
3. The invention simplifies the production process, and the whole process only needs to be arranged for 2 times and series welding for 2 times to be pressed into a module.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a flow chart of a novel flexible, reliable silicon-based solar module welding method according to the present invention;
FIG. 2 is a schematic view of a silicon-based heterojunction solar cell according to an embodiment of the invention;
FIG. 3 is a schematic diagram of two negative electrode arrangements of a small cell according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a structure for cutting a silicon-based battery into 13 small battery strings and attaching transparent glass according to an embodiment of the invention;
FIG. 5 is a schematic structural diagram of the expanded sheets arranged into small standard sheets according to the embodiment of the present invention;
FIG. 6 is a schematic structural diagram of two cathode positions of the P standard component in example 1 of the present invention;
FIG. 7 is a schematic side view of two cathode positions of the P standard according to example 1 of the present invention;
FIG. 8 is a schematic structural diagram of two cathode positions of the P standard according to example 5 of the present invention;
fig. 9 is a schematic side view of two cathode positions of the standard component in example 5P of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a novel flexible and reliable silicon-based solar module welding method comprises the following steps:
s01, cutting the battery piece into every N battery strings in a laser cutting mode without splitting, arranging the positive electrode and the negative electrode of each battery at one end of the positive back surface of the battery, arranging the negative electrode welding spot at the opposite downward direction or the positive lower side of the positive electrode welding spot, and when the negative electrode welding spot is at the positive lower side of the positive electrode welding spot, protecting the positive electrode part which is not covered with the hard protection layer by the welded negative electrode welding strip to prevent the exposed part from being cracked due to the unprotected protection;
s02, cutting the hard protective layer into N small pieces according to the size of the small battery;
s03, covering the cut hard protective layer on the small battery strings subjected to glue dispensing by using automatic arrangement equipment, and attaching to form small battery strings;
s04, arranging the small battery plates into small standard plates according to the required size distribution, and covering with a glue film;
s05, simultaneously welding the positive electrode and the negative electrode of the small standard sheet covered with the adhesive film in series by automatic welding equipment to form a 1P standard part, wherein the welding positive electrode welding strip adopts a square welding strip with the thickness of 0.3-0.4mm, and the welding negative electrode welding strip adopts a welding strip with the thickness of 0.1 X1.2m;
and S06, arranging the 1P standard parts by using automatic arrangement equipment, and mutually adhering and fixing glue films to form the 5P standard parts.
Examples
Referring to fig. 1-9, a novel flexible, reliable silicon-based solar module soldering method includes the steps of:
s01, providing a silicon-based heterojunction solar cell 1, cutting the cell 1 into 13 small cell strings 2 without splitting in a laser cutting mode, wherein the length of each small cell 3 is 12mm, the width of each small cell is 7.84mm, the anode and the cathode of each small cell 3 are arranged at one end of the front and the back of the cell, and the welding point of the cathode is opposite to or below the welding point of the anode;
s02, cutting the transparent glass 4 into 13 small pieces according to the size of the small battery 3;
s03, covering the cut transparent glass 4 on the small battery strings 2 subjected to glue dispensing by using automatic arrangement equipment, and laminating to form small battery strings 5;
s04, arranging the small battery plates 5 into small standard plates 6 according to the required size distribution, and covering with glue films;
s05, simultaneously and serially welding the positive electrode and the negative electrode of the small standard sheet 6 covered with the adhesive film to form a 1P standard part 9 by automatic welding equipment, wherein a square welding strip with the thickness of 0.3-0.4mm is adopted for welding the positive electrode welding strip 7, a welding strip with the thickness of 0.1X1.2m is adopted for the negative electrode welding strip 8, the welding position of the welding strip can be under or opposite to the positive electrode welding spot according to the welding spot design, and the part which is not covered with the transparent glass 4 can be protected under the positive electrode;
and S06, arranging the 1P standard parts 9 by using automatic arrangement equipment, and mutually sticking and fixing glue films to form the 5P standard parts 10.
The welded 5P standard part 10 can be flexibly connected in series and parallel to form a large battery string according to requirements and then pressed into a flexible battery module.
According to the invention, the hard protective layer is firstly attached to the battery piece, the chip is firstly protected, then the welding operation is carried out, the hard protective layer avoids the welding spot on the front surface of the battery piece, the safety performance of the small battery piece is greatly improved in the welding operation, the probability of breaking the small battery piece is reduced, the production loss is reduced, the quality of a finished product is improved, and the production yield and the production automation degree are greatly improved.
According to the invention, the welding spot of the cathode of the chip is designed under the anode of the chip, the part of the chip which is possibly fragile is protected, the reject ratio of the produced product is reduced, the welding spot adopts an electroplating process, the reliability of the welding spot is increased, the production process is simplified, and the whole process can be pressed into a module after only 2 times of arrangement and 2 times of series welding.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides a novel flexible silicon-based solar module welding method that can curl which characterized in that: the method comprises the following steps:
cutting the battery piece into every N battery strings without splitting in a laser cutting mode;
the hard protective layer is cut into N pieces according to the size of the small battery;
covering the cut hard protective layer on the small battery strings subjected to glue dispensing by using automatic arrangement equipment to be attached to form small battery strings;
arranging the small strings of battery pieces into small standard pieces according to the required size distribution, and covering with an adhesive film;
the positive electrode and the negative electrode of the small standard piece covered with the adhesive film are simultaneously welded in series by automatic welding equipment to form a 1P standard piece;
arranging the 1P standard parts by using automatic arrangement equipment, and mutually adhering and fixing adhesive films to form the 5P standard parts.
2. The novel flexible and reliable silicon-based solar module welding method according to claim 1, characterized in that: the solar cell is a silicon-based heterojunction solar cell and is cut into 13 cell strings.
3. The novel flexible and reliable silicon-based solar module welding method according to claim 2, characterized in that: each small battery of the small battery string is 12mm in length and 7.84mm in width, the positive electrode and the negative electrode of each small battery are arranged at one end of the front surface and the back surface of the battery, and the negative electrode welding point is opposite to or below the positive electrode welding point.
4. The novel flexible and reliable silicon-based solar module welding method according to claim 1, characterized in that: the hard protective layer is made of transparent glass.
5. The novel flexible and reliable silicon-based solar module welding method according to claim 1, characterized in that: and the positive electrode and the negative electrode of the small standard sheet are simultaneously welded in series by the automatic welding equipment to form a 1P standard part, the positive electrode welding strip adopts a square welding strip with the thickness of 0.3-0.4mm, and the negative electrode welding strip adopts a welding strip with the thickness of 0.1 X1.2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010604030.9A CN113871503B (en) | 2020-06-29 | 2020-06-29 | Flexible and curlable silicon-based solar module welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010604030.9A CN113871503B (en) | 2020-06-29 | 2020-06-29 | Flexible and curlable silicon-based solar module welding method |
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| Publication Number | Publication Date |
|---|---|
| CN113871503A true CN113871503A (en) | 2021-12-31 |
| CN113871503B CN113871503B (en) | 2024-03-29 |
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| CN202010604030.9A Active CN113871503B (en) | 2020-06-29 | 2020-06-29 | Flexible and curlable silicon-based solar module welding method |
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Citations (10)
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|---|---|---|---|---|
| JP2001111081A (en) * | 1999-07-30 | 2001-04-20 | Canon Inc | Solar cell module and manufacturing method therefor |
| CN101350375A (en) * | 2008-08-28 | 2009-01-21 | 苏州富能技术有限公司 | Film solar cell module and method for processing the same |
| CN101740644A (en) * | 2009-09-02 | 2010-06-16 | 南昌航空大学 | Curved surface silicon solar battery assembly |
| US20100200063A1 (en) * | 2009-02-12 | 2010-08-12 | Derek Djeu | Thin film solar cell |
| WO2013002044A1 (en) * | 2011-06-29 | 2013-01-03 | シャープ株式会社 | Solar cell module and solar cell mounting method |
| JP2013009016A (en) * | 2012-10-10 | 2013-01-10 | Sony Corp | Manufacturing method of integrated thin film element |
| CN103889725A (en) * | 2011-10-31 | 2014-06-25 | E.I.内穆尔杜邦公司 | Integrated back-sheet for back contact photovoltaic module |
| CN106206787A (en) * | 2015-04-30 | 2016-12-07 | 郑州精简新能源科技有限公司 | Bendable solar module and manufacture method thereof |
| JP2018163988A (en) * | 2017-03-24 | 2018-10-18 | 株式会社カネカ | Solar cell module |
| US20190019909A1 (en) * | 2015-12-30 | 2019-01-17 | Corner Star Limited | Advanced interconnect method for photovoltaic strings and modules |
-
2020
- 2020-06-29 CN CN202010604030.9A patent/CN113871503B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001111081A (en) * | 1999-07-30 | 2001-04-20 | Canon Inc | Solar cell module and manufacturing method therefor |
| CN101350375A (en) * | 2008-08-28 | 2009-01-21 | 苏州富能技术有限公司 | Film solar cell module and method for processing the same |
| US20100200063A1 (en) * | 2009-02-12 | 2010-08-12 | Derek Djeu | Thin film solar cell |
| CN101740644A (en) * | 2009-09-02 | 2010-06-16 | 南昌航空大学 | Curved surface silicon solar battery assembly |
| WO2013002044A1 (en) * | 2011-06-29 | 2013-01-03 | シャープ株式会社 | Solar cell module and solar cell mounting method |
| CN103889725A (en) * | 2011-10-31 | 2014-06-25 | E.I.内穆尔杜邦公司 | Integrated back-sheet for back contact photovoltaic module |
| JP2013009016A (en) * | 2012-10-10 | 2013-01-10 | Sony Corp | Manufacturing method of integrated thin film element |
| CN106206787A (en) * | 2015-04-30 | 2016-12-07 | 郑州精简新能源科技有限公司 | Bendable solar module and manufacture method thereof |
| US20190019909A1 (en) * | 2015-12-30 | 2019-01-17 | Corner Star Limited | Advanced interconnect method for photovoltaic strings and modules |
| JP2018163988A (en) * | 2017-03-24 | 2018-10-18 | 株式会社カネカ | Solar cell module |
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| CN113871503B (en) | 2024-03-29 |
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