CN111628026A - Trapezoidal sectional type hollow low-yield solder strip and preparation method of photovoltaic module thereof - Google Patents
Trapezoidal sectional type hollow low-yield solder strip and preparation method of photovoltaic module thereof Download PDFInfo
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- CN111628026A CN111628026A CN202010447060.3A CN202010447060A CN111628026A CN 111628026 A CN111628026 A CN 111628026A CN 202010447060 A CN202010447060 A CN 202010447060A CN 111628026 A CN111628026 A CN 111628026A
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- solder strip
- strip
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- trapezoidal
- solder
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- 229910000679 solder Inorganic materials 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000003466 welding Methods 0.000 claims abstract description 31
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 238000000137 annealing Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 5
- 238000011156 evaluation Methods 0.000 claims abstract description 4
- 238000000227 grinding Methods 0.000 claims abstract description 4
- 238000004080 punching Methods 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000926 separation method 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
-
- 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)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a trapezoidal sectional type hollow low-yield solder strip and a preparation method of a photovoltaic module thereof, wherein the method comprises the following steps: (1) determining trapezoid and hollow conical sizes of the solder strip according to the broken grid and the length model of the positive width and the negative width of the grid line of the battery piece, wherein the trapezoid and the hollow conical sizes of the solder strip comprise hollow taper of the solder strip, bottom width of the solder strip, top width of the solder strip and total thickness of the solder strip; (2) the hollow distance of the solder strip is 2 holes per broken grid, the hollow taper is respectively designed to be 30 degrees, 45 degrees and 60 degrees, and orthogonal experimental evaluation tests are carried out to determine the optimal hollow taper; (3) sequentially carrying out rolling treatment on the welding strip with the size determined according to the steps (1) and (2), drawing treatment on a trapezoidal grinding tool and treatment on a conical hole of a punching machine to obtain a trapezoidal welding strip; (4) the trapezoidal solder strip obtained in the step (3) is subjected to annealing tin-coating process treatment, and the method has the beneficial effects that: the bottleneck of yield limit of other welding strips is broken through, yield is reduced, and hidden cracks of photovoltaic components are reduced.
Description
Technical Field
The invention belongs to the technical field of photovoltaic solder strip production and manufacturing, and particularly relates to a trapezoidal sectional type hollow low-yield solder strip and a photovoltaic module preparation method thereof.
Background
The solar photovoltaic welding strip is one of main auxiliary materials of a photovoltaic module and is applied to connection of a photovoltaic module cell. The quality of the photovoltaic welding strip directly influences the current collection efficiency of the photovoltaic assembly, and the power of the photovoltaic assembly is greatly influenced. The tensile yield performance of the photovoltaic solder strip and the shading area of the photovoltaic solder strip on the battery are one of important factors influencing the manufacturing and efficiency of the photovoltaic module.
At present, 80% of photovoltaic cells in the market are broken grid type cell grid lines and smooth flat wire solder strips, and although triangular solder strips, sawtooth reflection solder strips and round wire solder strips also exist in the market, the photovoltaic cells still have respective bottleneck defects: the triangular welding strip is inconvenient for production and manufacture of the welding strip, and is easy to generate hidden crack of a battery piece, insufficient welding tension on the reverse side of the battery piece and the like; the sawtooth reflection welding strip has low welding tension on the reverse side of the battery piece, and the battery piece is easy to generate poor hidden crack; although the efficiency of the round wire welding strip is obviously improved and the welding strip can be manufactured in a mass production mode, the tension of the round wire welding strip is lower than that of the flat wire welding strip and the hidden crack is abnormally improved, so that the hundred percent of attenuation quality range can not be ensured in the photovoltaic industry.
Disclosure of Invention
Aiming at the defects, the invention provides the trapezoidal sectional type hollowed-out low-yield solder strip and the preparation method of the photovoltaic module, which break through the yield limit bottleneck of other solder strips, reduce yield, reduce hidden cracks of the photovoltaic module, reduce shading area and improve the light utilization rate of slow light reflection.
The invention is realized by the following technical scheme: a trapezoidal sectional type hollowed-out low-yield solder strip and a preparation method of a photovoltaic module thereof are disclosed, and the method comprises the following steps: (1) determining trapezoid and hollow conical sizes of the solder strip according to the broken grid and the length model of the positive width and the negative width of the grid line of the battery piece, wherein the trapezoid and the hollow conical sizes of the solder strip comprise hollow taper of the solder strip, bottom width of the solder strip, top width of the solder strip and total thickness of the solder strip;
(2) the hollow distance of the solder strip is 2 holes per broken grid, the hollow taper is respectively designed to be 30 degrees, 45 degrees and 60 degrees, and orthogonal experimental evaluation tests are carried out to determine the optimal hollow taper;
(3) sequentially carrying out rolling treatment on the welding strip with the size determined according to the steps (1) and (2), drawing treatment on a trapezoidal grinding tool and treatment on a conical hole of a punching machine to obtain a trapezoidal welding strip;
(4) carrying out annealing tin-coating process treatment on the trapezoidal welding strip obtained in the step (3);
as a preferred technical scheme of the invention, the annealing tin-coating process treatment comprises the steps of carrying out hot-dip tin coating on copper materials through a liquid tin-coating tank, controlling the copper materials to reach the required dimensional performance, cooling the photovoltaic solder strip reaching the requirement, and then carrying out interconnection bar separation and bus bar separation.
Compared with the prior art, the invention has the beneficial effects that: by introducing the hollow technology, the yield limit bottleneck of other welding strips is broken through, the yield is reduced, the hidden crack of a photovoltaic component is reduced, and in addition, the arc trapezoid and conical hollow technology is introduced, the shading area is reduced, and the light utilization rate of light slow reflection is improved, so that the purpose of synergy is achieved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 shows the performance of trapezoidal solder strips with different hollow tapers for a cell behind a photovoltaic module.
List of reference numerals: 1. hollow taper; 2. the bottom of the welding strip is wide; 3. the top width of the welding strip is wide; 4. the total thickness of the solder strip.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
A trapezoidal sectional type hollowed-out low-yield solder strip and a preparation method of a photovoltaic module thereof are disclosed, and the method comprises the following steps: (1) as shown in fig. 1, the solder ribbon trapezoid and hollow taper dimensions are determined according to the broken grid and front and back width length models of the grid line of the cell, and include a solder ribbon hollow taper 1, a solder ribbon bottom width 2, a solder ribbon top width 3 and a solder ribbon total thickness 4, for example, a common flat wire solder ribbon "1.0 × 0.25 mm" used in a certain photovoltaic module is designed into a trapezoid solder ribbon "1.0/0.8 × 0.25 mm", wherein the solder ribbon bottom width 2 is 1.0mmm, the solder ribbon top width 3 is 0.8mm, and the solder ribbon total thickness 4 is 0.25 mm.
(2) The method comprises the steps of setting the hollowed-out distance of a welding strip to be 2 holes per broken grid, designing the hollowed-out taper 1 to be 30 degrees, 45 degrees and 60 degrees respectively, carrying out orthogonal experimental evaluation tests, determining the optimal hollowed-out taper 1, setting the hollowed-out tapers to be 30 degrees, 45 degrees and 60 degrees respectively as shown in figure 2, applying the trapezoidal welding strips with different hollowed-out tapers to a photovoltaic module, testing the performance of a battery, and obtaining the optimal hollowed-out taper 1 of the trapezoidal welding strip with the welding strip bottom width 2 of 1.0mmm, the welding strip top width 3 of 0.8mm and the welding strip total thickness 4 of 0.25mm according to experimental data, wherein the comparison term 1.0 x 0.25 flat wire welding strip.
(3) And (3) sequentially carrying out rolling treatment on the welding strip with the size determined according to the steps (1) and (2), drawing treatment on a trapezoidal grinding tool and treatment on a conical hole of a punching machine to obtain the trapezoidal welding strip.
(4) And (4) carrying out annealing tin-coating process treatment on the trapezoidal solder strip obtained in the step (3).
As a preferred aspect of the present invention, the annealing tinning process comprises passing the copper material through a liquid tinning bath to hot dip tinning, controlling to achieve the required dimensional properties, cooling to achieve the required photovoltaic solder strip, and then performing the sub-interconnection bar and the bus bar.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A trapezoidal sectional type hollowed-out low-yield solder strip and a photovoltaic module manufacturing method thereof are characterized in that: the method comprises the following steps: (1) determining trapezoid and hollow conical sizes of the solder strip according to the broken grid and the length model of the positive width and the negative width of the grid line of the battery piece, wherein the trapezoid and the hollow conical sizes of the solder strip comprise hollow taper of the solder strip, bottom width of the solder strip, top width of the solder strip and total thickness of the solder strip;
(2) the hollow distance of the solder strip is 2 holes per broken grid, the hollow taper is respectively designed to be 30 degrees, 45 degrees and 60 degrees, and orthogonal experimental evaluation tests are carried out to determine the optimal hollow taper;
(3) sequentially carrying out rolling treatment on the welding strip with the size determined according to the steps (1) and (2), drawing treatment on a trapezoidal grinding tool and treatment on a conical hole of a punching machine to obtain a trapezoidal welding strip;
(4) and (4) carrying out annealing tin-coating process on the trapezoidal solder strip obtained in the step (3).
2. The trapezoidal segmented hollow low-yield solder strip and the preparation method of the photovoltaic module thereof as claimed in claim 1 are characterized in that: the annealing tin-coating process comprises the steps of carrying out hot-dip tin coating on copper materials through a liquid tin-coating tank, controlling the copper materials to reach the required size performance, cooling the photovoltaic solder strip meeting the requirement, and then separating the interconnection bars and the bus bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010447060.3A CN111628026A (en) | 2020-05-25 | 2020-05-25 | Trapezoidal sectional type hollow low-yield solder strip and preparation method of photovoltaic module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010447060.3A CN111628026A (en) | 2020-05-25 | 2020-05-25 | Trapezoidal sectional type hollow low-yield solder strip and preparation method of photovoltaic module thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111628026A true CN111628026A (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010447060.3A Pending CN111628026A (en) | 2020-05-25 | 2020-05-25 | Trapezoidal sectional type hollow low-yield solder strip and preparation method of photovoltaic module thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035987A (en) * | 2021-04-22 | 2021-06-25 | 程晓龙 | Laminated connection structure of efficient laminated assembly and manufacturing method |
| CN114188430A (en) * | 2021-12-06 | 2022-03-15 | 中节能太阳能科技（镇江）有限公司 | A split type pair welds area for photovoltaic module |
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| CN202487584U (en) * | 2012-04-06 | 2012-10-10 | 深圳市华光达科技有限公司 | Novel photovoltaic welding strip device of solar cell |
| JP3184983U (en) * | 2012-06-08 | 2013-07-25 | シーエスアイ セルズ カンパニー リミテッド | Back contact solar cell module |
| CN204441303U (en) * | 2015-01-23 | 2015-07-01 | 江苏威腾铜业有限公司 | A kind of hollow out photovoltaic welding belt |
| CN105023967A (en) * | 2015-07-24 | 2015-11-04 | 苏州宇邦新型材料股份有限公司 | Trapezoidal welding strip and photovoltaic module as well as preparation method thereof |
| CN204966519U (en) * | 2015-09-11 | 2016-01-13 | 刘畅 | Photovoltaic solar cell subassembly welds area |
| CN106449835A (en) * | 2016-10-31 | 2017-02-22 | 苏州宇邦新型材料股份有限公司 | Welding strip used for solar cell piece and processing technology thereof |
| CN208637429U (en) * | 2018-07-24 | 2019-03-22 | 浙江爱旭太阳能科技有限公司 | The positive electrode of crystal silicon solar batteries with anti-breaking grid function |
-
2020
- 2020-05-25 CN CN202010447060.3A patent/CN111628026A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202487584U (en) * | 2012-04-06 | 2012-10-10 | 深圳市华光达科技有限公司 | Novel photovoltaic welding strip device of solar cell |
| JP3184983U (en) * | 2012-06-08 | 2013-07-25 | シーエスアイ セルズ カンパニー リミテッド | Back contact solar cell module |
| CN204441303U (en) * | 2015-01-23 | 2015-07-01 | 江苏威腾铜业有限公司 | A kind of hollow out photovoltaic welding belt |
| CN105023967A (en) * | 2015-07-24 | 2015-11-04 | 苏州宇邦新型材料股份有限公司 | Trapezoidal welding strip and photovoltaic module as well as preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035987A (en) * | 2021-04-22 | 2021-06-25 | 程晓龙 | Laminated connection structure of efficient laminated assembly and manufacturing method |
| CN114188430A (en) * | 2021-12-06 | 2022-03-15 | 中节能太阳能科技（镇江）有限公司 | A split type pair welds area for photovoltaic module |
| CN114188430B (en) * | 2021-12-06 | 2024-01-30 | 中节能太阳能科技（镇江）有限公司 | Split type double-welded belt for photovoltaic module |
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