CN207199631U - A kind of more main grid crystal silicon solar batteries pieces - Google Patents
A kind of more main grid crystal silicon solar batteries pieces Download PDFInfo
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- CN207199631U CN207199631U CN201720625634.5U CN201720625634U CN207199631U CN 207199631 U CN207199631 U CN 207199631U CN 201720625634 U CN201720625634 U CN 201720625634U CN 207199631 U CN207199631 U CN 207199631U
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- main grid
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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
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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
- 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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Abstract
The utility model provides a kind of more main grid crystal silicon solar batteries pieces, back electrode including battery body and front electrode and the back side, wherein described front electrode includes waiting a plurality of secondary grid line vertically equidistantly arranged, also include a plurality of thin grid line equidistantly arranged in the horizontal direction, pad is set on described secondary grid line, pad width is less than or equal to 1mm, the connection of pad vertically is connected using curve, the back electrode is the back side silver electrode equidistantly arranged in the horizontal direction, and the back electrode width is less than or equal to 2mm；The utility model changes cell piece back side electrode arrangements, plus distinctive welding method, make more main grid cell pieces during automatic series welding, welding is firm firm, more main grid cell piece back side weldings will not be offset, sealing-off, welding quality is improved, can ensure that front, back side welding are bonded more main grid cell pieces always, form good welding effect.
Description
Technical field
The invention belongs to solar battery sheet Manufacturing Techniques field, and in particular to a kind of more main grid crystal silicon solar electricity
Pond piece.
Background technology
The development of the mankind be unable to do without the energy, with developing rapidly for economy, energy demand is continuously increased, solar-electricity
Ratio of the pond in energy demand is by more and more higher.
At present, the crystalline silicon solar cell modules main grid line number of in the market main flow is generally 3 grid, in recent years, to improve too
Positive battery efficiency, reduces cost, and main grid is brought up to 4, even 5 from 3 by battery manufacturer from efficient angle is put forward.With
The development of technology, there is the technology of more main grids, i.e., print a plurality of main grid in cell piece front（Generally 10-20 roots main grid
Line）, the technology allows the printing width of secondary grid line to be reduced to 15um-30um by 60um, greatly reduces the usage amount of silver paste, together
When shorten the transmission of electric current on secondary grid line, reduce secondary grid line resistance power loss.
In existing more main grid cell piece positive and negative electrode structures, more main grid cell piece front electrodes and backplate pair grid
Line number is equal, and orientation is consistent, and the secondary grid line in front plays the connection function of cell piece and welding, and its grid line quantity is more, and one
As be 10-20 roots, secondary grid line is mainly made up of pad；Back electrode structure is a plurality of electrodes series, electrode column number, position with just
Face pair grid line corresponds.Because more more conventional weldings of main grid welding are thinner lighter, therefore, more main grid cell piece back side weldings are easy
Shift, back side welding sealing-off problem is difficult to effectively solve, and limits the development and popularization of more main grid technologies.
The content of the invention
To solve the above problems, the invention discloses a kind of more main grid crystal silicon solar batteries pieces, unique structure, method are real
It with convenient, can fast and effectively ensure more main grid welding of battery film effects, improve welding quality.
To reach above-mentioned purpose, technical scheme is as follows：
A kind of more main grid crystal silicon solar batteries pieces, it is characterised in that：Including cell piece mainboard, between cell piece mainboard front
Every arrangement 10-24 bar pair grid lines, secondary grid line is vertically arranged, and every secondary grid line is made up of pad, and pad number is 10-90, weldering
The length of disk in the horizontal direction is not more than 1mm, is vertically connected between pad using connecting line, cell piece mainboard front water
Square to thin grid line is spaced, thin grid line width is 15-65um, and the cell piece mainboard back side includes electrode and Al-BSF, described
Electrode is the silver electrode composition of 2-5 bars segmentation, and the equidistant horizontal direction arrangement of electrode, electrode is vertical with the secondary grid line in front, electrode
Width is not more than 2mm.
Further, the pad is shaped as rectangle, circle or other figures.
Further, the connecting line between the pad can be the combination of straight line, curve, broken line or curve and straight line.
The beneficial effects of the invention are as follows：
The invention provides a kind of more main grid crystal silicon solar batteries pieces, and the welding method of more main grid cell pieces,
Change cell piece back side electrode arrangements, make more main grid cell pieces during automatic series welding, front, back side welding are bonded always
More main grid cell pieces, welding is firm firm, and more main grid cell piece back side weldings will not be offset, sealing-off, improves welding quality.
Brief description of the drawings
Fig. 1 is more main grid crystal silicon solar batteries piece half tone designs of the present invention.
Fig. 2 designs for monocrystalline solar cells piece half tone of the present invention.
Fig. 3 is metal screen frame schematic diagram of the present invention.
Fig. 4 is more main grid crystal silicon solar batteries pieces of the present invention, welding laying side view.
Fig. 5 is more main grid crystal silicon solar batteries pieces of the present invention, welding laying top view.
Reference numerals list：
1st, polycrystalline cell piece body, 2, secondary grid line, 3, pad, 4, connecting line, 5, the polycrystalline cell piece body back side, 6, silver electricity
Pole, 7, Al-BSF, 8, single crystal battery piece body, 9, the single crystal battery piece body back side, 10, metal screen frame, 11, wire, 12, gold
Belong to silk fixing axle, 13, scalable briquetting, 14, short more main grid weldings, 15, conventional welding, 16, more main grid cell pieces, 17, length it is more
Main grid welding, 18, metal screen frame, 19, more main grid cell pieces front, 20, the more main grid weldings in front, main grid cell back more than 21
Face, 22, the more main grid weldings in the back side.
Embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following embodiments are only
For illustrating the present invention rather than limitation the scope of the present invention.It should be noted that the word " preceding " used below in description,
" rear ", "left", "right", "up" and "down" refer to the direction in accompanying drawing, and word " interior " and " outer " refer respectively to direction or remote
From the direction of particular elements geometric center.
As shown in figure 1, present embodiments providing a kind of more main grid crystal silicon solar batteries pieces, the cell piece mainly includes electricity
Pond piece body 1, and be mainly made up of positioned at the secondary grid line 2 in the positive front of cell piece body, secondary grid line pad 3, pad and weldering
Connected mode between disk is connected using curve connecting line 4, and the cell piece body back side 5 is mainly by 7 groups of silver electrode 6 and Al-BSF
Into.
Wherein, cell piece body length of side 156.75mm, the secondary grid line number in cell piece front is 16, and each secondary grid line is mainly by 18
Pad forms, and thin grid line number is 90.
Preferably, every secondary grid line is made up of 2 head and the tail pads, 16 intermediate contact pads, head and the tail 1 × 2.5mm of pad size,
1 × 0.5mm of intermediate contact pads, larger-size head and the tail pad may insure the welding effect of face bonding band.
Preferably, the connection between each pad is connected using 2 curve connecting lines.
Further, the orientation of back side silver electrode is perpendicular to positive secondary grid line direction.
The present embodiment additionally provides another monocrystalline solar cells piece, mainly includes battery body front 8, cell piece sheet
The body back side 9, as shown in Figure 2.
As shown in Figures 4 and 5, a string of main grid welding of battery film processes more than 3 are welded, specific action is as follows：
（1）16 short more main grid weldings are placed in the first station along conveying tape motion direction, perpendicular to conveyer belt motion side
To 3 conventional weldings of placement on more main grid weldings；
（2）Conventional welding and more main grid weldings are welded together using heating rod；
（3）More main grid cell pieces are positioned on the first station, cell piece backplate overlaps with conventional welding, the first work
Position conveyer belt vacuum absorption holes are opened, by cell piece absorption on the conveyor belt, to prevent cell piece from being moved in course of conveying
Position；
（4）Conveyer belt drives cell piece to be moved to second station, the first station vacuum suction bore closure, second station vacuum
Adsorption hole is normally opened；
（5）The more main grid weldings of 16 root longs are positioned in the first station and second station by manipulator, manipulator crawl metal
Screen frame is positioned on the cell piece of second station, and 3 conventional weldings are disposed vertically more main grids weldering in the first station by manipulator
Take, heater welds together the conventional welding of the first station, more main grid weldings；
（6）Main grid cell piece more than second is positioned on the first station, cell piece backplate overlaps with conventional welding,
First station conveyer belt vacuum absorption holes are opened；
（7）Conveyer belt drives above-mentioned cell piece to be moved to next station, and 3rd station vacuum absorption holes are normally opened, the first station
Vacuum suction bore closure；
（8）The more main grid weldings of 16 root longs are positioned in the first station and second station by manipulator, manipulator crawl metal
Screen frame is positioned on the cell piece of second station, and 3 conventional weldings are disposed vertically more main grids weldering in the first station by manipulator
Take, heater welds together the conventional welding of the first station, more main grid weldings；
（9）Main grid cell piece more than 3rd is positioned on the first station, cell piece backplate overlaps with conventional welding,
First station conveyer belt vacuum absorption holes are opened, and 16 short more main grid weldings are positioned on the first station cell piece by manipulator；
（10）Conveyer belt drives above-mentioned cell piece to be moved to next station, and the 4th station vacuum absorption holes are normally opened, the first work
Position vacuum suction bore closure；
（11）Manipulator crawl metal screen frame is positioned on the cell piece of second station；
（12）Conveyer belt drives above-mentioned cell piece to be moved to next station, and the 5th station vacuum absorption holes are normally opened, in the 5th
Station carries out more main grid welding of battery film, and welding manner uses infrared welding, and the more main grid weldings in front, back side routine welding are welded
It is connected on cell piece；
（13）Conveyer belt drives above-mentioned cell piece to be moved to next station；
（14）Manipulator captures metal screen frame on the 7th station from conveyer belt, and is moved to the first work
Position.
A kind of welding method of more main grid crystal silicon solar batteries pieces described in the present embodiment, change cell piece backside structure
Three conventional weldings are first soldered to the cell piece back side by arrangement, by conventional welding welding electrode, make the firm jail of electrode welding
Lean on, will not offset, sealing-off, improve welding quality.
The present invention carries out more main grid welding of battery film in the 5th station, is to ensure that heating rod is heated to suitable temperature, will
The more main grid weldings in front, back side routine welding are soldered on cell piece, make the progress that whole welding procedure is normal, orderly, without
Wait, operating efficiency is high.
Wherein step（5）（8）（11）Described is metal screen frame, including rack 1, wire 2, wire with heat insulating coat
Fixing axle 3, scalable briquetting 4, as shown in figure 3, being machined with multiple row longitudinal fluting on rack to fix wire, wire two
Wire fixing axle is fixed at end, and electricity is not directly born against with tension metal silk, metal screen frame by adjusting wire fixing axle
On the piece of pond, but the welding on cell piece and cell piece is pushed down by wire, due to offering vacuum suction on conveyer belt
Scalable briquetting 4 is adsorbed on belt conveyor by hole, and scalable briquetting drives wire to be adjacent to cell piece face bonding band, and will
Welding is fixed on cell piece, and cell piece is by more band heat insulating coats（Teflon coatings）Wire 2 tightly push down, welding is flat
It is whole firm, do not conduct heat, cell piece uniform force, will not be destroyed.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, in addition to
Formed technical scheme is combined by above technical characteristic.
Claims (4)
- A kind of 1. more main grid crystal silicon solar batteries pieces, it is characterised in that：Including cell piece mainboard, cell piece mainboard front interval 10-24 bar pair grid lines are arranged, secondary grid line is vertically arranged, and every secondary grid line is made up of pad, and pad number is 10-90, pad Length in the horizontal direction is not more than 1mm, is vertically connected between pad using connecting line, and cell piece mainboard front is horizontal Direction is spaced thin grid line, and thin grid line width is 15-65um, and the cell piece mainboard back side includes electrode and Al-BSF, the electricity The extremely silver electrode composition of 2-5 bars segmentation, the equidistant horizontal direction arrangement of electrode, electrode is vertical with the secondary grid line in front, and electrode is wide Degree is not more than 2mm.
- A kind of 2. more main grid crystal silicon solar batteries pieces according to claim 1, it is characterised in that：The shape of the pad For rectangle or circle.
- A kind of 3. more main grid crystal silicon solar batteries pieces according to claim 1, it is characterised in that：Between the pad Connecting line can be the combination of straight line, curve, broken line or curve and straight line.
- A kind of 4. more main grid crystal silicon solar batteries pieces according to claim 1, it is characterised in that：Connection between pad Connected using 2 curve connecting lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720625634.5U CN207199631U (en) | 2017-06-01 | 2017-06-01 | A kind of more main grid crystal silicon solar batteries pieces |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720625634.5U CN207199631U (en) | 2017-06-01 | 2017-06-01 | A kind of more main grid crystal silicon solar batteries pieces |
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| CN207199631U true CN207199631U (en) | 2018-04-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221567A (en) * | 2017-06-01 | 2017-09-29 | 连云港神舟新能源有限公司 | A kind of many main grid crystal silicon solar batteries pieces and welding method |
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2017
- 2017-06-01 CN CN201720625634.5U patent/CN207199631U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221567A (en) * | 2017-06-01 | 2017-09-29 | 连云港神舟新能源有限公司 | A kind of many main grid crystal silicon solar batteries pieces and welding method |
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