CN203317862U - Gate line printing unit - Google Patents

Gate line printing unit Download PDF

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Publication number
CN203317862U
CN203317862U CN2013203093634U CN201320309363U CN203317862U CN 203317862 U CN203317862 U CN 203317862U CN 2013203093634 U CN2013203093634 U CN 2013203093634U CN 201320309363 U CN201320309363 U CN 201320309363U CN 203317862 U CN203317862 U CN 203317862U
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CN
China
Prior art keywords
grid
printing
printing machine
crystal
printing equipment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2013203093634U
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Chinese (zh)
Inventor
任军林
连维飞
钱俊岑
刘晓瑞
魏青竹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Talesun Solar Technologies Co Ltd
Original Assignee
Zhongli Talesun Solar Co Ltd
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Priority to CN2013203093634U priority Critical patent/CN203317862U/en
Application granted granted Critical
Publication of CN203317862U publication Critical patent/CN203317862U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

A gate line printing unit comprises a frame and a printing set disposed on the frame. The printing set comprises a main gate printer and a fine gate printer disposed in sequence. The main gate printer is provided with a screen stencil. The fine gate printer is provided with a metal stencil. The printing set further comprises a drying device. The gate ling printing unit prints main lines and fine lines of a front surface electrode of a crystalline silicon cell separately; a main gate is linked to a fine gate through a reference point; the fine gate is printed with the metal stencil, the printed fine gate is tall but narrow and is uniform in height, and photoelectric conversion efficiency of the cell is improved.

Description

A kind of grid line printing equipment
Technical field
The utility model relates to a kind of crystal silicon solar energy battery printing equipment, is specifically related to a kind of for printing the grid line printing equipment of crystal silicon cell front surface.
Background technology
At crystal silicon solar energy battery surface printing grid line, be indispensable link in crystal silicon cell manufacturing process, under illumination, photo-generated carrier can be flowed to main grid by thin grid, if connect upper load, will form loop, form a complete circuit, realized the effect of photic electricity.
Thin grid are extremely important to the efficiency of crystal silicon solar energy battery to effective collection of carrier, guaranteeing that under the prerequisite that shading-area is constant, grid line is closeer, better to the collection of carrier.Grid line has certain width, highly, if the grid line printing is too wide, highly too low, will certainly increase shading-area, reduces photoelectric transformation efficiency.Usually adopt thin twice grid printing in existing printing technology, improve the height of grid line by the stack of twice printing, but still it is wide to solve grid line, increases the defect of shading-area.
The thin grid width printed by screen template at present generally can be between 65-100um, because being subject to the restriction of the factors such as slurry, traditional meshcount and wire diameter, if the thin grid width of printing is below 65um, because screen template has anastomose, thin grid height after causing printing is inhomogeneous, and average height is not more than 20um, affects thin grid quality, reduce the cell photoelectric conversion efficiency.
The utility model content
For solving the problems of the technologies described above, it is a kind of for printing the grid line printing equipment of crystal silicon cell front surface that the purpose of this utility model is to provide, by the main grid of crystal silicon battery front surface electrode and the separately printing of thin grid, thin grid after making to print are high and narrow, and highly even, improved the cell piece photoelectric transformation efficiency.
For achieving the above object, the technical solution of the utility model is as follows: a kind of grid line printing equipment, front surface grid line printing for crystal-silicon battery slice, comprise frame and be arranged at the printing equipment group on described frame, described printing equipment group comprises main grid printing machine and the thin grid printing machine set gradually, and described main grid printing machine is provided with screen stencil; Described thin grid printing machine is provided with the metallic plate masterplate, and described printing equipment group also comprises drying plant.
Preferably, described metallic plate masterplate is alloy-steel plate or alloy copper coin or alloy aluminium sheet.
Preferably, the thickness of described metallic plate is 30-55 um.
Preferably, described metallic plate is provided with the through hole of a plurality of segmenteds.
Preferably, the width of described through hole is 20-55 um.
Preferably, described main grid printing machine, drying plant and thin grid printing machine are set in turn on streamline.
Preferably, described main grid printing machine and thin grid printing machine are the integral type printing machine, described drying plant is located at the side of described integral type printing machine, described integral type printing machine also is provided with shifting apparatus, described shifting apparatus is provided with at least two mechanical arms, a described mechanical arm is for the described screen stencil of transfer or described metallic plate masterplate, another described mechanical arm is used for described crystal-silicon battery slice is transferred load to described drying plant from described integral type printing machine, or described crystal-silicon battery slice is transferred load to described integral type printing machine from described drying plant.
Adopt the beneficial effect of the disclosed technical scheme of the utility model: by the main grid of crystal-silicon battery slice front surface electrode and the separately printing of thin grid, utilize datum mark to realize that main grid and thin grid accurately are connected, wherein the main grid part still adopts thin gate part to use the metallic plate mould printing, thin grid after printing are high and narrow, and highly even, improved the cell piece photoelectric transformation efficiency.
The accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment technology, below will the accompanying drawing of required use in the embodiment technical description be briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the embodiment 1 that Fig. 1 is a kind of grid line printing equipment of the utility model;
The schematic top plan view that Fig. 2 is the utility model embodiment 2;
The structural representation of the metallic plate masterplate that Fig. 3 is a kind of grid line printing equipment of the utility model.
The represented corresponding component title of numeral in figure:
1, main grid printing machine 2, thin grid printing machine 3, streamline 4, crystal-silicon battery slice 5, shifting apparatus 6,11, mechanical arm 7, metallic plate masterplate 71, through hole 8, screen stencil 9, integral type printing machine 10, drying plant.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment obtained, and all belong to the scope of the utility model protection.
Embodiment 1
As shown in Figure 1, a kind of grid line printing equipment, front surface grid line printing for crystal-silicon battery slice, comprise frame and be arranged at the printing equipment group on frame, the printing equipment group comprises main grid printing machine 1, drying plant 10 and the thin grid printing machine 2 set gradually, and main grid printing machine 1 is provided with screen stencil (not marking in figure); Thin grid printing machine 2 is provided with metallic plate masterplate (not marking in figure).Main grid printing machine 1, drying plant 10 and thin grid printing machine 2 are set in turn on streamline 3, and crystal-silicon battery slice 4 is first through main grid printing machine 1 printing main grid post-drying, then circulation is to the thin grid of thin grid printing machine 2 printing.
The metallic plate masterplate is alloy-steel plate, and thickness is 40 um, and alloy-steel plate is provided with the through hole 71 of a plurality of segmenteds, and the width of through hole is 30 um.
A kind of method that adopts above-mentioned grid line printing equipment to realize the thin grid printing of high-quality comprises the following steps:
(1) by semi-finished product crystal-silicon battery slice plated film after etching;
(2) crystal-silicon battery slice after plated film is delivered to screen process press, prepare back electrode mesh-plate, the back electrode of printing crystal-silicon battery slice rear surface;
(3) crystal-silicon battery slice that will print back electrode is delivered to drying plant, at the temperature of 200 ℃, and baking 45s;
(4) prepare back of the body electric field web plate, the back of the body electric field of printing crystal-silicon battery slice rear surface;
(5) crystal-silicon battery slice that will print back of the body electric field is delivered to drying plant, at the temperature of 200 ℃, and baking 45s;
(6) crystal-silicon battery slice is overturn;
(7) crystal-silicon battery slice of oven dry is delivered to the grid line printing equipment, first adopt the thin grid of the front surface of metallic plate mould printing crystal-silicon battery slice, then crystal-silicon battery slice is delivered to drying plant, at the temperature of 200 ℃, baking 45s; , then adopt common screen template printing main grid;
(8) crystal-silicon battery slice that will complete main grid and thin grid printing is sent into sintering furnace sintering 60s, sintering typical case peak temperature 760-820 ℃;
(9) cooling, pack after the assay was approved.
This kind of method can realize the thin grid printing of high-quality, obtains height and narrow thin grid.Completed the crystal-silicon battery slice after back electrode and back of the body electric field print, when carrying out the front electrode printing, main grid at first prints electrode, then adopt the alloy-steel plate of customization as masterplate, steel plate is provided with through hole, and through hole is identical with the thin grid design of battery, then adopts the particular slurry printing.Thin grid actual measured width after printing is 45um, is highly 25um, and the battery positive electrode structure is complete, with common serigraphy scheme, compares, and the cell piece photoelectric transformation efficiency promotes about 0.15%(absolute value); Use common screen template printing main grid simultaneously, reduce main grid slurry consumption, effectively control cost, improve printing rear electrode quality, improve the cell piece photoelectric transformation efficiency.
Embodiment 2
All the other are identical with embodiment 1, and difference is, main grid printing machine and thin grid printing machine are integral type printing machine 9, and drying plant is located at the side of integral type printing machine.Integral type printing machine 9 also is provided with shifting apparatus 5, shifting apparatus is provided with two mechanical arms, mechanical arm 6 is for transfer screen stencil 8 or transfer metallic plate masterplate (figure does not mark), mechanical arm 11 is for crystal-silicon battery slice is transferred load to drying plant from the integral type printing machine, or crystal-silicon battery slice is transferred load to the integral type printing machine from drying plant.When carrying out the main grid printing, mechanical arm 6 is sent screen stencil 8 into integral type printing machine 9 printing main grids; When main grid is completed for printing, mechanical arm 6 shifts out screen stencil 8, and mechanical arm 11 transfers load to drying plant 10 by crystal-silicon battery slice 4 from integral type printing machine 9, after crystal-silicon battery slice 4 is dried, crystal-silicon battery slice 4 is transferred load to integral type printing machine 9 from drying plant 10.Mechanical arm 6 is sent the metallic plate masterplate into the thin grid of integral type printing machine 9 printing, and when thin grid are completed for printing, mechanical arm 6 shifts out the metallic plate masterplate.Mechanical arm 6 and mechanical arm 6 alternately transfers, realize main grid and the carefully alternately printing of grid.
Metallic plate masterplate 7 is the alloy copper coin, and thickness is 50 um, and alloy-steel plate is provided with the through hole of a plurality of segmenteds, and the width of through hole is 40 um.
A kind of method that adopts above-mentioned grid line printing equipment to realize the thin grid printing of high-quality comprises the following steps:
(1) by semi-finished product crystal-silicon battery slice plated film after etching;
(2) crystal-silicon battery slice after plated film is delivered to screen process press, prepare back electrode mesh-plate, the back electrode of printing crystal-silicon battery slice rear surface;
(3) crystal-silicon battery slice that will print back electrode is delivered to drying plant, at the temperature of 250 ℃, and baking 25s;
(4) prepare back of the body electric field web plate, the back of the body electric field of printing crystal-silicon battery slice rear surface;
(5) crystal-silicon battery slice that will print back of the body electric field is delivered to drying plant, at the temperature of 250 ℃, and baking 25s;
(6) crystal-silicon battery slice is overturn;
(7) crystal-silicon battery slice of oven dry is delivered to the grid line printing equipment, first adopt the main grid of the front surface of common screen template printing crystal-silicon battery slice, then crystal-silicon battery slice is delivered to drying plant, at the temperature of 250 ℃, baking 25s; Adopt again the thin grid of metallic plate mould printing;
(8) crystal-silicon battery slice that will complete main grid and thin grid printing is sent into sintering furnace sintering 90s, sintering typical case peak temperature 750-800 ℃;
(9) cooling, pack after the assay was approved.
Embodiment 3
All the other are identical with embodiment 2, and difference is, the metallic plate masterplate is the alloy aluminium sheet, and thickness is 30 um, and alloy-steel plate is provided with the through hole of a plurality of segmenteds, and the width of through hole is 55 um.。
Embodiment 4
All the other are identical with embodiment 1, and difference is, main grid printing machine, drying plant and thin grid printing machine are set in turn on streamline, and crystal-silicon battery slice is first through the thin grid post-drying of meticulous grid press printing, then circulation is to main grid press printing main grid.
Adopt the beneficial effect of the disclosed technical scheme of the utility model: by the main grid of crystal-silicon battery slice front surface electrode and the separately printing of thin grid, utilize datum mark to realize that main grid and thin grid accurately are connected, wherein the main grid part still adopts thin gate part to use the metallic plate mould printing, thin grid after printing are high and narrow, and highly even, improved the cell piece photoelectric transformation efficiency.
The through hole that thin grid are slurries by metallic plate is printed on cell piece, there is no the impact of silk screen anastomose, and through hole can design very thin, than the thin 20um of thin grid of screen template, still can guarantee good printing effect, and the thickness of steel plate has guaranteed printing height.
Metallic plate has even thickness, and the advantage that the life-span is long carves through hole on steel plate, and slurry will be fully by the character of slurry and the thickness of steel plate by the effect of through hole, and the width of through hole decides; Because of the impact without traditional silk screen anastomose, print thin grid line bar height even, width is even, and the top of lines is more flat.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.Multiple modification to these embodiment will be apparent for those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from spirit or scope of the present utility model, realization in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (7)

1. a grid line printing equipment, front surface grid line printing for crystal-silicon battery slice, it is characterized in that, comprise frame and be arranged at the printing equipment group on described frame, described printing equipment group comprises main grid printing machine and the thin grid printing machine set gradually, and described main grid printing machine is provided with screen stencil; Described thin grid printing machine is provided with the metallic plate masterplate, and described printing equipment group also comprises drying plant.
2. grid line printing equipment according to claim 1, is characterized in that, described metallic plate masterplate is alloy-steel plate or alloy copper coin or alloy aluminium sheet.
3. grid line printing equipment according to claim 2, is characterized in that, the thickness of described metallic plate is 30-55 um.
4. grid line printing equipment according to claim 3, is characterized in that, described metallic plate is provided with the through hole of a plurality of segmenteds.
5. grid line printing equipment according to claim 4, is characterized in that, the width of described through hole is 20-55 um.
6. grid line printing equipment according to claim 5, is characterized in that, described main grid printing machine, drying plant and thin grid printing machine are set in turn on streamline.
7. grid line printing equipment according to claim 5, it is characterized in that, described main grid printing machine and thin grid printing machine are the integral type printing machine, described drying plant is located at the side of described integral type printing machine, described integral type printing machine also is provided with shifting apparatus, described shifting apparatus is provided with at least two mechanical arms, a described mechanical arm is for the described screen stencil of transfer or described metallic plate masterplate, another described mechanical arm is for transferring load to described drying plant by described crystal-silicon battery slice from described integral type printing machine, or described crystal-silicon battery slice is transferred load to described integral type printing machine from described drying plant.
CN2013203093634U 2013-05-31 2013-05-31 Gate line printing unit Expired - Lifetime CN203317862U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013203093634U CN203317862U (en) 2013-05-31 2013-05-31 Gate line printing unit

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103252983A (en) * 2013-05-31 2013-08-21 中利腾晖光伏科技有限公司 Grid line printing equipment and method for realizing high-quality fine grid printing by adopting same
CN104129183A (en) * 2014-08-06 2014-11-05 中利腾晖光伏科技有限公司 Method of printing obverse-side electrode of solar battery piece

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103252983A (en) * 2013-05-31 2013-08-21 中利腾晖光伏科技有限公司 Grid line printing equipment and method for realizing high-quality fine grid printing by adopting same
CN103252983B (en) * 2013-05-31 2016-02-03 中利腾晖光伏科技有限公司 A kind of grid line printing equipment
CN104129183A (en) * 2014-08-06 2014-11-05 中利腾晖光伏科技有限公司 Method of printing obverse-side electrode of solar battery piece

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GR01 Patent grant
CP01 Change in the name or title of a patent holder

Address after: No. 1, Tenghui Road, Chang Kun Industrial Park, Suzhou, Changshou City, Jiangsu

Patentee after: SUZHOU TALESUN SOLAR TECHNOLOGIES Co.,Ltd.

Address before: No. 1, Tenghui Road, Chang Kun Industrial Park, Suzhou, Changshou City, Jiangsu

Patentee before: ZHONGLI TALESUN SOLAR Co.,Ltd.

CP01 Change in the name or title of a patent holder
CX01 Expiry of patent term

Granted publication date: 20131204

CX01 Expiry of patent term