CN102306679B - Preparation method of solar cell and solar module - Google Patents
Preparation method of solar cell and solar module Download PDFInfo
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- CN102306679B CN102306679B CN2011101286572A CN201110128657A CN102306679B CN 102306679 B CN102306679 B CN 102306679B CN 2011101286572 A CN2011101286572 A CN 2011101286572A CN 201110128657 A CN201110128657 A CN 201110128657A CN 102306679 B CN102306679 B CN 102306679B
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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
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- 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
Abstract
The invention discloses a preparation method of a solar cell and a solar module. The front side of the battery is only provided with the thin grid lines and does not have the main grid lines, so that the shading rate of the surface of the battery piece is greatly reduced, and meanwhile, the use of positive electrode slurry is saved; the battery piece is divided into a plurality of small units, the small units are mutually independent, and the small units of the battery piece are connected in series or in parallel through the circuit design, so that the current and voltage regulating characteristics of the assembly are realized. The application field of the solar cell is greatly expanded, and the process of civilization of the solar photovoltaic industry is accelerated.
Description
Technical field
The present invention relates to a kind of solar cell and component technology field, be specifically related to the manufacture method of a kind of solar cell and assembly, the method for design circuit in micromodule.
Background technology
The solar components product is along with the development of industrialization at present, and solar components production interchange improved efficiency and cost have had larger progress.But conventional solar components product has limited the application of solar components product at civil area owing to characteristics such as dimensions are large, unit for electrical property parameters is constant, has hindered the civil nature process of solar energy industry.
Developing rapidly of solar energy industry, although its civil nature process has had small-scale development, such as the solar charger on the market, solar electric torch etc., but because the civil nature field is to the photovoltaic product electrical property diversification of demand, low power photovoltaic product, technology is relatively not mature enough, the encapsulation laserscribing that generally adopts, destroyed to a great extent the crystal silicon cell structure, not only affect the attractive in appearance of subassembly product, also caused the unnecessary waste of crystal silicon solar batteries electrical property simultaneously.The photovoltaic product that adopts in addition thin-film solar cells to make, because the technical bottleneck of thin-film solar cells, conversion efficiency is low, unit for electrical property parameters is not ideal enough, the market active demand is a kind of can be made within the specific limits, have the technology and products thereof of the solar photovoltaic assembly product of different unit for electrical property parameters, continue to enlarge photovoltaic product civil nature field.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of solar cell and assembly for the defective of above-mentioned existence, battery front side of the present invention only has thin grid line to arrange, therefore the dereliction grid line greatly reduces cell piece surface shading rate, the use of having saved simultaneously the positive electrode slurry; Cell piece is divided into some junior units, each junior unit is independent mutually, assembly of the present invention is by circuit design each junior unit series connection or in parallel with cell piece, realize the current-regulating voltage-regulating characteristic of assembly, on the basis that does not affect the solar cell outward appearance, realize different requirement on electric performance in the certain limit, have the clear superiorities such as size is little, thickness is low, enlarge largely the application of solar cell, accelerated the process of photovoltaic industry civil nature.
The technical scheme that the preparation method of a kind of solar cell of the present invention and assembly adopts, step comprises:
(1) in preparation crystal silicon cell process, positive electrode omits the positive electrode main grid by the design and printing web plate, and the printed silver of intermittent is starched thin grid line simultaneously; Back of the body electric field omits back of the body electric field main grid by the design and printing web plate, makes simultaneously the printed silver aluminium paste of back of the body electric field intermittent, and preparation has the crystal silicon cell of special positive and negative electrode; Cell piece is divided into some junior units, and each junior unit is independent mutually, and L is the width of positive electrode on the cell piece junior unit, d is the spacing distance between the cell piece junior unit, n is the number of junior unit on the cell piece, wherein the d of L=[cell piece width-(n-1)]/n, 1 μ m＜d＜10000 μ m.
(2) utilize laser that TCO glass is processed, do not need alive partial etching to fall TCO is on glass, the TCO glass of cell piece circuit requirements is satisfied in preparation.
(3) the upper strata EVA of encapsulation usefulness processed, corresponding TCO glass is with the part of circuit, and EVA does not cover when encapsulation, excising with the EVA that circuit part contacts with TCO glass, to cooperate the circuit of TCO glass.
(4) EVA of lower floor of encapsulation usefulness processed, make the circuit part on the backboard, EVA does not cover when encapsulation, and the EVA that contacts with circuit part on the backboard is excised to cooperate the back plane circuitry layout.
(5) according to the unit for electrical property parameters of crystalline silicon battery plate, design and produce the backboard with circuit layout.
(6) utilize mask technique, on two-layer EVA up and down, the brush plating conducting resinl.
(7) by the accurate location of each layer, utilize lamination, solar photovoltaic assembly is made in encapsulation.
Wherein step (1) also can be processed crystal silicon battery by laser, and laser works power is 3w～100w, and operating rate is 0.5m/s～100m/s to realize the intermittent layout of positive electrode and back of the body electric field, and the interval is at 0 μ m～10000 μ m.
Step (2), laser works power are 3w～100w, and operating rate is 0.5m/s～100m/s.
The invention has the beneficial effects as follows: the preparation method of a kind of solar cell and assembly, at first the electrical property of assembly is confirmed, the internal circuit of design component, then according to demand electrical property carries out special processing to crystal-silicon battery slice, positive electrode is by the design and printing web plate, omit the positive electrode main grid, the printed silver of intermittent is starched thin grid line simultaneously; Back of the body electric field omits back of the body electric field main grid by the design and printing web plate, makes simultaneously the printed silver aluminium paste of back of the body electric field intermittent, and preparation has the crystal silicon cell of special positive and negative electrode.TCO glass and the backboard with support circuit produced in design.Do not affecting under the solar cell prerequisite attractive in appearance, adopt TCO glass to replace common photovoltaic glass, both increased light transmittance, the thickness of assembly can be regulated according to the thickness of TCO glass, to satisfy the needs under the different situations, also reduced simultaneously and manufactured cost; Battery front side of the present invention only has thin grid line to arrange, and the dereliction grid line has reduced the shading-area of battery surface, greatly reduces cell piece surface shading rate, when having increased battery electrical property, has saved the consumption of positive electrode slurry; Cell piece is divided into some junior units, each junior unit is independent mutually, assembly of the present invention is by circuit design each junior unit series connection or in parallel with cell piece, realize the current-regulating voltage-regulating characteristic of assembly, manifest under the energy-conservation prerequisite at reduction resistance, enlarge largely the utilized field of solar cell, accelerated the process of photovoltaic industry civil nature.
Description of drawings:
Figure 1 shows that solar battery sheet positive electrode schematic diagram of the present invention;
Figure 2 shows that solar cell back electric field schematic diagram of the present invention;
Figure 3 shows that component internal circuit diagram of the present invention;
Figure 4 shows that component internal lamination sequential schematic of the present invention;
Figure 5 shows that TCO on-glass circuit schematic diagram;
Figure 6 shows that circuit diagram on the backboard.
Wherein, 1-TCO glass, 2-TCO circuit, 3-EVA, 4-conducting resinl, 5-solar battery sheet, 6-back plane circuitry, 7-backboard.
Embodiment
In order to understand better the present invention, below in conjunction with accompanying drawing and example technical solution of the present invention is described, but the present invention is not limited thereto.
The technical scheme that the preparation method of a kind of solar cell of the present invention and assembly adopts is:
(1) in preparation crystal silicon cell process, positive electrode omits the positive electrode main grid by the design and printing web plate, and the printed silver of intermittent is starched thin grid line simultaneously; Back of the body electric field omits back of the body electric field main grid by the design and printing web plate, makes simultaneously the printed silver aluminium paste of back of the body electric field intermittent, and preparation has the crystal silicon cell of special positive and negative electrode.
(2) utilize laser that TCO glass is processed, do not need alive partial etching to fall TCO is on glass, the TCO glass of cell piece circuit requirements is satisfied in preparation.
(3) the upper strata EVA of encapsulation usefulness processed, corresponding TCO glass is with the part of circuit, and EVA does not cover when encapsulation, excising with the EVA that circuit part contacts with TCO glass, to cooperate the circuit of TCO glass.
(4) EVA of lower floor of encapsulation usefulness processed, make the circuit part on the backboard, EVA does not cover when encapsulation, and the EVA that contacts with circuit part on the backboard is excised to cooperate the back plane circuitry layout.
(5) according to the unit for electrical property parameters of crystalline silicon battery plate, design and produce the backboard with circuit layout.
(6) utilize mask technique, on two-layer EVA up and down, the brush plating conducting resinl.
(7) by the accurate location of each layer, utilize lamination, solar photovoltaic assembly is made in encapsulation.
Wish is made miniature widgets voltage and is about 2V, and electric current is about 1.25A.Shown in Figure 1 such as accompanying drawing, cell piece is divided into some junior units, each junior unit is independent mutually, and the width L of positive electrode is about 10mm＜L＜50mm on the cell piece junior unit, and d is the spacing distance between the cell piece junior unit, 1 μ m＜d＜10000 μ m, design anodal Printing screen, the precision of control L, negative pole Printing screen, control silicon chip negative pole is made monocrystalline 125 cell pieces that satisfy electrical property; According to monocrystalline 125 cell piece positive and negative electrode circuit layouts, adopt the laser ablation technology, TCO unnecessary conductive layer on glass is etched away the related circuit that design forming TCO is on glass; According to the related circuit on the TCO glass circuit making backboard; According to circuit requirement, make the EVA of special construction, the TCO glass circuit can directly be contacted with cell piece with back plane circuitry, form internal circuit; Utilize mask technique, with the upper brush plating conducting resinl of EVA, with the normal operation of the circuit of realizing design; Utilize laminating machine, accurately locate TCO glass, EVA, solar battery sheet, EVA, backboard, lamination was made assembly in 20 minutes, and component power is about 2.5w, and voltage is about 36V, and electric current is about 0.12A.
Embodiment 2:
Wish is made miniature widgets voltage and is about 36V, and electric current is about 0.12A.Shown in Figure 1 such as accompanying drawing, wherein L is about 1mm＜L＜5mm, and 1 μ m＜d＜10000 μ m designs anodal Printing screen, the precision of control L, and design negative pole Printing screen, control silicon chip negative pole layout is made polycrystalline 156 cell pieces that satisfy electrical property; According to polycrystalline 156 cell piece positive and negative electrode circuit layouts, adopt the laser ablation technology, TCO unnecessary conductive layer on glass is etched away the related circuit that design forming TCO is on glass; According to the related circuit on the TCO glass circuit making backboard; According to circuit requirement, make the EVA of special construction, the TCO glass circuit can directly be contacted with cell piece with back plane circuitry, form internal circuit; Utilize mask technique, with the upper brush plating conducting resinl of EVA, with the normal operation of the circuit of realizing design; Utilize laminating machine, accurately locate TCO glass, EVA, solar battery sheet, EVA, backboard, lamination was made assembly in 20 minutes, and component power is about 4w, and voltage is about 36V, and electric current is about 0.12A.
Claims (3)
1. the preparation method of a solar cell and assembly is characterized in that, step comprises:
(1) in preparation crystal silicon cell process, positive electrode omits the positive electrode main grid by the design and printing web plate, and the printed silver of intermittent is starched thin grid line simultaneously; Back of the body electric field omits back of the body electric field main grid by the design and printing web plate, makes simultaneously the printed silver aluminium paste of back of the body electric field intermittent, and preparation has the crystal silicon cell of special positive and negative electrode;
(2) utilize laser that TCO glass is processed, do not need alive partial etching to fall TCO is on glass, the TCO glass of cell piece circuit requirements is satisfied in preparation;
(3) the upper strata EVA of encapsulation usefulness processed, corresponding TCO glass is with the part of circuit, and EVA does not cover when encapsulation, excising with the EVA that circuit part contacts with TCO glass, to cooperate the circuit of TCO glass;
(4) EVA of lower floor of encapsulation usefulness processed, make the circuit part on the backboard, EVA does not cover when encapsulation, and the EVA that contacts with circuit part on the backboard is excised to cooperate the back plane circuitry layout;
(5) according to the unit for electrical property parameters of crystalline silicon battery plate, design and produce the backboard with circuit layout;
(6) utilize mask technique, on two-layer EVA up and down, the brush plating conducting resinl;
(7) by the accurate location of each layer, utilize lamination, solar photovoltaic assembly is made in encapsulation.
2. the preparation method of a kind of solar cell according to claim 1 and assembly, it is characterized in that: step (1), by laser crystal silicon battery is processed, laser works power is 3w～100w, and operating rate is that 0.5m/s～100m/s is to realize the intermittent layout of positive electrode and back of the body electric field.
3. the preparation method of a kind of solar cell according to claim 1 and assembly, it is characterized in that: step (2), laser works power are 3w～100w, operating rate is 0.5m/s～100m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011101286572A CN102306679B (en) | 2011-05-18 | 2011-05-18 | Preparation method of solar cell and solar module |
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| CN2011101286572A CN102306679B (en) | 2011-05-18 | 2011-05-18 | Preparation method of solar cell and solar module |
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| CN102306679A CN102306679A (en) | 2012-01-04 |
| CN102306679B true CN102306679B (en) | 2013-04-10 |
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| CN103325857B (en) * | 2013-06-17 | 2016-08-31 | 江苏峰谷源储能技术研究院有限公司 | A kind of solar cell and preparation method thereof |
| CN107768455B (en) * | 2017-11-16 | 2023-06-23 | 青海黄河上游水电开发有限责任公司光伏产业技术分公司 | Mounting structure of photovoltaic module |
| CN113414508B (en) * | 2021-05-24 | 2023-10-27 | 惠州市豪鹏科技有限公司 | Laser welding fixture for soft package battery |
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| JPH11238897A (en) * | 1998-02-23 | 1999-08-31 | Canon Inc | Solar cell module and manufacture thereof |
| CN102044588A (en) * | 2009-10-10 | 2011-05-04 | 中电电气(上海)太阳能科技有限公司 | Civil battery assembly |
| CN101950761A (en) * | 2010-09-29 | 2011-01-19 | 上海晶澳太阳能科技有限公司 | Novel solar cell and solar photovoltaic module composed thereof |
| CN201820762U (en) * | 2010-09-30 | 2011-05-04 | 常州天合光能有限公司 | Silicon cell free of main gratings |
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Effective date of registration: 20220513 Address after: 250000 lino wisdom, No. 30766, jingshidong Road, Jinan area, China (Shandong) pilot Free Trade Zone, Jinan City, Shandong Province Patentee after: Shandong Linuo sunshine Power Technology Co.,Ltd. Address before: 250103 Linuo science and Technology Park, No. 30766, Jingshi East Road, Jinan City, Shandong Province Patentee before: Shandong Linuo Solar Power Holdings Co.,Ltd. |