CN205657067U - Solar cell front electrode that dotted line combines - Google Patents
Solar cell front electrode that dotted line combines Download PDFInfo
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- CN205657067U CN205657067U CN201620386527.7U CN201620386527U CN205657067U CN 205657067 U CN205657067 U CN 205657067U CN 201620386527 U CN201620386527 U CN 201620386527U CN 205657067 U CN205657067 U CN 205657067U
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- electrode
- silver electrode
- silver
- point
- tinsel
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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
Abstract
The utility model discloses a solar cell front electrode that dotted line combines, this front electrode package draw together the punctiform silver electrode that prints on the positive surface of P type silicon substrate, print the wire on the punctiform silver electrode after the metallization, and the wire is connected through transparent conducting resin and punctiform silver electrode, this preparation method adopts screen -printing technique to pass through making herbs into wool, the diffusion, the after -clearing, the coating film, print the punctiform silver electrode on the positive surface of the P type silicon substrate after laser division membrane and the technology processing of the printing back electrode back of the body, then adopt the silver electrode of wire printing machine after the metallization is handled to print the wire electrode on the surface, the wire connects through transparent conducting resin with the silver electrode is in the same place, the advantage has replaced the partial silver electrode on the electrode of front with the copper electrode, the silver electrode quantity of silicon solar cell's front electrode has been reduced, thereby silicon solar cell's manufacturing cost has been reduced, the copper electrode has higher height in addition, promotes the grid line aspect ratio, raises the efficiency.
Description
Technical field
This utility model belongs to technical field of solar batteries, particularly relates to the front electrode of solar battery of a kind of Joint of Line and Dot.
Background technology
Traditional crystal silicon solar energy battery front electrode overwhelming majority is all that the mode using traditional silk-screened makes, due to
The slurry used is expensive silver slurry so that the manufacturing cost of solaode remains high.On the other hand, it is limited to half tone and makes essence
Degree, silk screen printing thin grid line depth-width ratio is little, causes the front electrode made to have bigger front electrode to be lost, be lost including shading,
Resistance loss, recombination loss etc..Secondary double exposure technology adds the height of thin grid line, but adds the cost of silver simultaneously.Other systems
Although the method making front electrode can produce relatively thin finger grid line, but is also added significantly to process complexity simultaneously, so
It it is not the low-cost technologies being suitable for a large amount of industrialized production.For be effectively facilitated solaode and photovoltaic system cost persistently under
" the par online " dropped and realize on essential meaning, solar photovoltaic generation system must constantly be sent out to the direction of high efficiency, low cost
Exhibition.But, the cost of the current silver electrode used by silicon solar cell account for the 15% of whole silicon solar cell manufacturing cost,
And the cost of silver electrode is higher, this just makes the relatively costly of silicon solar cell, causes silicon solar cell to widely popularize.
Utility model content
The purpose of this utility model is to provide the front electrode of solar battery of a kind of Joint of Line and Dot, it is provided that a kind of technique is simple, cost
What low, efficiency was high is applicable to the processing technology of the front electrode of solar battery of industrialized production.
For achieving the above object, this utility model is by the following technical solutions:
The front electrode of solar battery of a kind of Joint of Line and Dot, it is characterised in that include equidistantly being evenly distributed on silicon substrate front
Point-like silver electrode, the electrically conducting transparent glue being arranged on point-like silver electrode and by electrically conducting transparent glue connect point-like silver electrode metal
Silk.
Described point-like silver electrode presses array arrangement on silicon substrate, and the tinsel connecting every row or column point-like silver electrode be arranged in parallel.
Being additionally provided with connection frame silver electrode wiry on described silicon substrate, described frame silver electrode sets along the edge of silicon substrate
Putting, two ends wiry are all connected with frame silver electrode.
Described electrically conducting transparent glue is generally circular in shape, rectangle or rhombus；The thickness of gular transparent conducting resinl is 0.02～0.15mm, length
Degree is 0.05～10mm, width is 0.02～0.5mm.
Generally circular in shape, the rectangle of described point-like silver electrode or rhombus；A length of the 0.1 of rectangle silver electrode～10mm, width is
0.02～0.08mm, thickness is 0.005～0.030mm.
Described wiry a diameter of 0.01～0.08mm, tinsel is filamentary silver, copper wire, silver-gilt copper wire or B alloy wire, metal
The shape of cross section of silk is rectangle, trapezoidal, triangle, circle, ellipse or rhombus
The preparation method of the front electrode of solar battery of a kind of Joint of Line and Dot, comprises the following steps:
1. through making herbs into wool, diffusion, after clean, silicon substrate surface screen printing after plated film and printed back electrode back surface field PROCESS FOR TREATMENT
One layer of point-like silver electrode of brush and frame silver electrode, silk-screen printing technique is: squeegee pressure is 80-200N, speed 100-300mm/s；
2. the silicon substrate printing point-like silver electrode and frame silver electrode is carried out metalized, at metallization in chain-type sintering furnace
Science and engineering skill is: belt speed is 3000-8000mm/min, and sintering temperature is 700-900 DEG C；
3. by silk screen printing electrically conducting transparent glue in the point-like silver electrode surface after metalized, silk-screen printing technique is: printing
Pressure is 80-200N, speed 100-300mm/s；
4. print tinsel by copper cash printer on the point-like silver electrode after printing electrically conducting transparent glue, print and wiry lead to simultaneously
Crossing copper cash printer to be solidified togather with point-like silver electrode by tinsel, tinsel is connected with frame silver electrode, solidification temperature
80～300 DEG C.
Compared with prior art, this utility model has a following useful technique effect:
Battery front side electrode of the present utility model is to be made up of point-like silver electrode, electrically conducting transparent glue and tinsel, tinsel and silver electrode
It is connected together by electrically conducting transparent glue, is the part silver electrode that instead of on front electrode with copper electrode, reduces the silicon sun
The silver electrode consumption of the front electrode of battery, thus reduce the manufacturing cost of silicon solar cell；Additionally copper electrode has higher height
Degree, promotes grid line depth-width ratio, improves efficiency.
Further, frame silver electrode can be connected tinsel, is indirectly connected with point-like silver electrode, it is possible to effectively avoids localized metallic electricity
Pole is damaged and is caused the inoperable situation of whole battery,
Method of the present utility model through making herbs into wool, diffusion, after clean, plated film laser open film and printed back electrode back surface field technique
The upper equidistant distributed points shape silver electrode of front printing of the P-type silicon matrix after process, the then point-like silver electrode after metalized
Print electrically conducting transparent glue point on surface, re-use copper cash printer and tinsel and point-like silver electrode are connected by low-temperature setting technique
Together, this mode significantly reduces the manufacturing cost of the front electrode of silicon solar cell, improves the high wide of front electrode
Ratio, thus reduce the manufacturing cost of silicon solar cell, improve the conversion efficiency of solaode.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of this utility model solar-electricity electrode structure front one strip electrode.
Fig. 2 is the structural representation of the front electrode of silicon solar cell of the present utility model.
In figure, 1 is point-like silver electrode；2 is electrically conducting transparent glue；3 is tinsel；4 is frame silver electrode；5 is silicon substrate.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
As it is shown in figure 1, be solar-electricity electrode structure front one strip electrode structure, this front electrode includes being printed in P-type silicon matrix
Point-like silver electrode 1 on front, metallized after point-like silver electrode on print tinsel 3, tinsel pass through electrically conducting transparent glue 2
It is connected with point-like silver electrode 1.Point-like silver electrode 1 is evenly distributed on silicon substrate 5, and electrically conducting transparent glue 2 is arranged on point-like silver electrode
On 1, tinsel 3 connects point-like silver electrode 1, and frame silver electrode 4 connects tinsel 3.
Such as Fig. 2, the front electrode of a kind of silicon solar cell, including P-type silicon matrix 5, on the front surface of P-type silicon matrix 5
Be printed with one layer a length of 0.1～10mm, width be 0.02～0.08mm, thickness be 0.005～0.030mm silver electrode 1, and
The frame silver electrode 4 printed along P-type silicon matrix 5 edge；Printed by silk screen printing on silver electrode 1 after metallized process
Adhesive dots 2 (electrically conducting transparent glue) (as a example by rectangle), adhesive dots (electrically conducting transparent glue) 2 thickness are 0.02～0.15mm,
A length of 0.05～10mm, width is 0.02～0.5mm；Adhesive dots 2 shape can be that other are several for circle, rectangle, rhombus etc.
What figure；In adhesive dots after printing by copper cash printer print tinsel 3, diameter wiry 0.01～0.08mm,
Tinsel can be filamentary silver, copper wire, silver-gilt copper wire or B alloy wire, shape of cross section wiry can be rectangle, trapezoidal, three
The figures such as dihedral, circle, ellipse, rhombus；Print wiry simultaneously by copper cash printer, tinsel 3 is electric with point-like silver
Pole 1 solidification links together, and solidification temperature is at 80～300 DEG C.
In the present embodiment, the metalized of point-like silver electrode 1 and frame silver electrode 4 is carried out in chain-type sintering furnace, tinsel 3
Print and be solidificated on copper cash printer and complete.The width of electrically conducting transparent glue 2 is less than point more than the width of point-like silver electrode 1, length
The length of shape silver electrode 1.
In specific implementation process, a length of 0.6mm of the point-like silver electrode 1 being printed on the front surface of P-type silicon matrix 5,
Width is 0.05mm, thickness is 0.08mm, crosswise spots spacing 6 is 1.1mm, longitudinal dot spacing 7 is 2.0mm；It is printed on
Conducting resinl 2 on silver electrode 1 after metalized is rectangle, a length of 0.2mm, and width is 0.05mm, thickness at 0.2mm,
The most longitudinal dot spacing is with point-like silver electrode 1；Print a diameter of 0.04mm wiry, solidification temperature 150 DEG C.
The preparation process of the front electrode of silicon solar cell of the present utility model is:
1. P-type silicon matrix 5 first passes through making herbs into wool, diffusion, rear cleaning, plated film (back side coating film and front plated film) and printed back electricity
After the back surface field PROCESS FOR TREATMENT of pole, printing last layer width is a length of 0.6mm the most on the front surface, and width is 0.05mm, thickness
For the silver electrode 1 of 0.08mm, 1 crosswise spots spacing of silver electrode is 1.1mm, longitudinal dot spacing is 2.0mm；This silver electrode 1
Preparation use silk-screen printing technique, its process conditions are: squeegee pressure is 140N, speed 200mm/s, and web lines is a width of
0.05mm, wire mesh membrane thickness is 0.008mm.
2. the above-mentioned backplate back surface field printing silver electrode 1 and be printed on P-type silicon matrix 5 back surface is carried out at metallization
Reason, metallization is carried out in chain-type sintering furnace, and process conditions are: belt speed is 6000mm/ minute, and sintering temperature is 860 DEG C.
3. printing electrically conducting transparent glue 2 by silk screen printing in the silver electrode surface after metalized, electrically conducting transparent glue is a length of
0.2mm, width is 0.05mm, and thickness is at 0.2mm, and the most longitudinal dot spacing is with point-like silver electrode 1；Its process conditions are:
Squeegee pressure is 140N, speed 200mm/s, and wire mesh membrane thickness is 0.005mm.
4. printing cross section by copper cash printer on the point-like silver electrode 1 after printing electrically conducting transparent glue 2 is circular tinsel 3,
The diameter of tinsel 3, at 0.04mm, passes through copper cash printer by tinsel 3 and point-like silver electrode 1 while printing tinsel 3
Being solidified togather, solidification temperature is at 150 DEG C.
The foregoing is only a kind of embodiment of the present utility model, be not all of or unique embodiment, ordinary skill
The conversion of any equivalence that technical solutions of the utility model are taked by personnel by reading this utility model description, is this practicality
Novel claim is contained.
Claims (7)
1. the front electrode of solar battery of a Joint of Line and Dot, it is characterised in that include equidistantly being evenly distributed on silicon substrate (5)
Point-like silver electrode (1) on front, the electrically conducting transparent glue (2) being arranged on point-like silver electrode (1) and by electrically conducting transparent glue (2)
Connect the tinsel (3) of point-like silver electrode (1).
The front electrode of solar battery of a kind of Joint of Line and Dot the most according to claim 1, it is characterised in that described point
Shape silver electrode (1) presses array arrangement on silicon substrate (5), and the tinsel (3) connecting every row or column point-like silver electrode (1) is put down
Row is arranged.
The front electrode of solar battery of a kind of Joint of Line and Dot the most according to claim 1 and 2, it is characterised in that described
Silicon substrate (5) on be additionally provided with connect tinsel (3) frame silver electrode (4), described frame silver electrode (4) is along silicon
The edge of matrix (5) is arranged, and the two ends of tinsel (3) are all connected with frame silver electrode (4).
The front electrode of solar battery of a kind of Joint of Line and Dot the most according to claim 1, it is characterised in that described is saturating
Bright conducting resinl (2) is generally circular in shape, rectangle or rhombus；The thickness of gular transparent conducting resinl (2) is 0.02～0.15mm, length
Be 0.05～10mm, width be 0.02～0.5mm.
The front electrode of solar battery of a kind of Joint of Line and Dot the most according to claim 1, it is characterised in that described point
Shape silver electrode (1) is generally circular in shape, rectangle or rhombus；A length of the 0.1～10mm of rectangle silver electrode (1), width is
0.02～0.08mm, thickness is 0.005～0.030mm.
The front electrode of solar battery of a kind of Joint of Line and Dot the most according to claim 1, it is characterised in that described gold
Belong to a diameter of the 0.01～0.08mm of silk (3), the shape of cross section of tinsel (3) be rectangle, trapezoidal, triangle, circle,
Ellipse or rhombus.
The front electrode of solar battery of a kind of Joint of Line and Dot the most according to claim 1, it is characterised in that described gold
Belonging to silk (3) is copper wire, silver-gilt copper wire or B alloy wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620386527.7U CN205657067U (en) | 2016-04-28 | 2016-04-28 | Solar cell front electrode that dotted line combines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620386527.7U CN205657067U (en) | 2016-04-28 | 2016-04-28 | Solar cell front electrode that dotted line combines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205657067U true CN205657067U (en) | 2016-10-19 |
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ID=57401783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620386527.7U Active CN205657067U (en) | 2016-04-28 | 2016-04-28 | Solar cell front electrode that dotted line combines |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762202A (en) * | 2016-04-28 | 2016-07-13 | 泰州乐叶光伏科技有限公司 | Solar cell front electrode with combination of points and lines and preparation method |
-
2016
- 2016-04-28 CN CN201620386527.7U patent/CN205657067U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762202A (en) * | 2016-04-28 | 2016-07-13 | 泰州乐叶光伏科技有限公司 | Solar cell front electrode with combination of points and lines and preparation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 225314 Jiangsu Province, Taizhou City Hailing Xingtai Road No. 268 Co-patentee after: Shaanxi Gsolar Power Co., Ltd. Patentee after: Taizhou long base music Photovoltaic Technology Co., Ltd. Address before: 225314 Jiangsu Province, Taizhou City Hailing District South Road Taizhou Xingtai Leye Photovoltaic Technology Co. Ltd. Co-patentee before: Shaanxi Gsolar Power Co., Ltd. Patentee before: TAIZHOU LEYE PHOTOVOLTAIC TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |