CN101937936B - Solar cell module - Google Patents
Solar cell module Download PDFInfo
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- CN101937936B CN101937936B CN200910108455A CN200910108455A CN101937936B CN 101937936 B CN101937936 B CN 101937936B CN 200910108455 A CN200910108455 A CN 200910108455A CN 200910108455 A CN200910108455 A CN 200910108455A CN 101937936 B CN101937936 B CN 101937936B
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- electrode
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- solar cell
- battery sheet
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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
In order to solve the technical problems of insufficient solder and unsoldering of a solar cell, the invention provides a reliably welded solar cell module. The solar cell module comprises a plurality of solar cell plates and solder strips, wherein the solar cell plates are connected through the solder strips; a first electrode and a second electrode are arranged on the solar cell plates respectively; the first electrode and the second electrode are arranged on upper and lower surfaces of each solar cell plate respectively and correspond to each other up and down in a space; a solder strip is welded on the first electrode of each solar cell plate; another solder strip is welded on the second electrode; and the welding melting points between the first electrode and the second electrode and the solder strips are different. Due to the adoption of the technical scheme, a welded high-melting point electrode cannot be influenced during welding or have insufficient solder or unsoldering and other situations. Therefore, the solar cell module has the advantages of firm and reliable welding and improvement of yield.
Description
[technical field]
The present invention relates to the solar module field.
[background technology]
Independent crystal silicon solar cell sheet energy output is little, and very frangible, and inconvenient actual the use will be packaged into assembly with a plurality of battery sheets connections in the practical application.For example, a plurality of battery sheets are connected into battery pack, more a plurality of battery pack are arranged in neat array; Be connected in series between each battery sheet of same row, each is arranged the battery sheet and is connected in parallel, and is welded to connect with an end of thin welding and the back electrode of a last battery sheet when being connected in series; The front electrode of the other end and next battery sheet is welded to connect, and two electrodes, a front electrode and back electrode are promptly arranged on the battery sheet; It is corresponding up and down on solar battery sheet, and therefore when the front electrode of solar battery sheet welded through welding and previous battery sheet, its back electrode was through welding and the welding of next battery sheet; Yet during because of the welding welding; Need the uniform temperature fusion to connect, under the situation that battery sheet front electrode has welded, during the back electrode welding; Because front electrode and back electrode are corresponding up and down at two faces of battery sheet, therefore might make defectives such as the front electrode sealing-off of having welded or generation rosin joint.Otherwise if the welding back electrode will face same problem at the welding front electrode earlier, after promptly back electrode welded earlier, when the welding front electrode, same back electrode may produce defectives such as rosin joint or sealing-off.
[summary of the invention]
For solving the technical problem of solar cell rosin joint, sealing-off, the invention provides a kind of solar module of reliable welding.
Solar module disclosed by the invention comprises several solar and welding, connects through welding between the solar battery sheet, and said solar battery sheet is provided with first electrode and second electrode; Wherein first electrode and second electrode be respectively on solar battery sheet two surfaces up and down, and corresponding up and down in the locus; Welding one welding on solar battery sheet first electrode, another welding of welding on second electrode, first electrode is different with the welding fusing point of second electrode and welding.
Adopt technical scheme of the present invention; During welding the dystectic end of welding is welded on first electrode earlier, the more low-melting end of another welding is welded on the second corresponding electrode, the electrode of back welding is because its welding melting temperature is lower like this; Can be not influential during welding to the high electrode that has welded of fusing point; Can not produce situations such as rosin joint or sealing-off, make firm welding reliable, rate of finished products improves.
[description of drawings]
The positive sketch map of placing of solar battery sheet in Fig. 1 specific embodiment of the invention;
Solar battery sheet connects sketch map in Fig. 2 specific embodiment of the invention;
The solar cell back face is placed sketch map in Fig. 3 specific embodiment of the invention;
Welding sketch map in Fig. 4 specific embodiment of the invention;
A place enlarged diagram among Fig. 5 Fig. 1;
B place enlarged diagram among Fig. 6 Fig. 2.
[embodiment]
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Embodiment
This example has been introduced solar module in detail, and it comprises several solar and welding, connects through welding between the solar battery sheet, and said solar battery sheet is provided with first electrode and second electrode; First electrode and second electrode be two surfaces about solar battery sheet respectively, and corresponding up and down in the locus; Welding one welding on one solar battery sheet, first electrode, another welding of welding on second electrode, first electrode is different with the welding fusing point of second electrode and welding.
First electrode is front electrode or back electrode, and second electrode is the back electrode or the front electrode of answering with first electrode pair; Front electrode is generally negative pole, and back electrode is generally positive pole; Front electrode is on two main grid lines in the front of solar battery sheet.Back electrode is on two main grid lines of solar cell back face.Coat the silver slurry on the front electrode as negative pole, coat silver-colored aluminium paste on the back electrode as positive pole.
So-called welding fusing point is understood easily, refers to electrode and welding when welding, electrode or welding fusion and then the temperature spot when linking together.
So-called locus is corresponding up and down, is readily appreciated that be wire such as front electrode at upper surface, then back electrode is wire at the lower surface of solar battery sheet, if the front electrode of wire is as the lower surface upright projection, then projection overlaps with lower surface wire back electrode.
Adopt 125cm * 125cm size in this example of solar battery sheet.Material is polysilicon, monocrystalline silicon or amorphous silicon.
Welding is generally copper strips, adopts the mode of soldering to connect during welding, and when welding being welded to first electrode and second electrode, meeting is situations such as appearance possibility rosin joint, sealing-off as describing in the background technology.Require the welding fusing point different when for this reason, the present invention requires to weld welding with electrode.
Welding fusing point when preferably, first electrode and second electrode and welding weld differs 50-250 ℃.Like this, can be so that welding the time can not produce situation such as rosin joint, sealing-off.
Such as; Can plate the different melting points metal or metal alloy at the welding two ends; A dystectic end is welded on earlier on first electrode or second electrode, the more low-melting end of another welding is welded on second electrode or first electrode of the adjacent cell sheet that has welded first electrode, the electrode of back welding is because its welding melting temperature is lower like this; Can be not influential during welding to the high electrode that has welded of fusing point, can not produce situations such as rosin joint or sealing-off.Half plates high-melting-point (250-350 ℃) metal or metal alloy A (the crowd family that can be selected from copper, silver, gold, magnesium, zinc, tin, bismuth, transfer, indium, copper alloy, silver alloy, billon, magnesium alloy, kirsite, ashbury metal, bismuth alloy, gallium alloy, indium alloy is formed); Second half is coated with low melting point (130-250 ℃) alloy B (the crowd family that can be selected from copper, silver, gold, magnesium, zinc, tin, bismuth, transfer, indium, copper alloy, silver alloy, billon, magnesium alloy, kirsite, ashbury metal, bismuth alloy, gallium alloy, indium alloy is formed); An end that is coated with alloy A is welded on the front electrode of battery sheet; And an end that is coated with low melting point (130-250 ℃) alloy B is welded on the back electrode of adjacent cell sheet; The positive higher welding temperature (optional 300-400 ℃) that adopts during welding; Back side series welding then adopts low welding temperature (optional 150-300 ℃); But need be lower than front welding fusing point; Defectives such as the rosin joint of the front welding that back side welding temperature causes thereby the front weld can not occur or sealing-off have been avoided doing over again of welding, thereby have also reduced the fragmentation rate and prolonged product useful life.
Perhaps only plate the metal or metal alloy with the welding different melting points at an end of welding; It is poor when welding, also can to form fusing point like this, can realize inventive concept equally.
Be the concrete grammar that example is specifically explained its structure and manufacturing with the solar cell sheet through the solar battery array that is in series below.
Like Fig. 1, Fig. 3, shown in Figure 5, a plurality of solar battery sheets 1 are connected successively, and Fig. 1 is solar battery sheet 1 front schematic view; Fig. 3 is solar battery sheet 1 schematic rear view; As shown in fig. 1, on solar battery sheet 1 front face surface two main grid lines being arranged is negative pole as front electrode 13, as shown in Figure 3, has two main grid lines promptly anodal as back electrode 14 on the solar cell back face surface.
Welding is as shown in Figure 4, and welding 2 one ends are coated with refractory metal or metal alloy 2a, claims that this is held to be high-melting-point end 21; Welding 2 other ends are coated with low-melting-point metal or metal alloy 2b, claim that this is held to be low melting point end 22;
Like Fig. 2, shown in Figure 6, be example with being connected in series of two solar battery sheets 1, define two adjacent solar cells and be called first solar cell 11 and second solar cell 12 respectively; When being connected in series, the high-melting-point end 21 with welding is welded on the front electrode, so earlier; All welded a welding 2 on each solar battery sheet 1; After for example welding the high-melting-point end of welding on first solar battery sheet 11 among Fig. 2, the low melting point end 22 of this welding is welded on the back electrode 14 of second solar cell 12, during welding again; Welding temperature is lower than the temperature of former welding front electrode 13 and welding high-melting-point end 21; Like this, welding low melting point end 14 is during to back electrode 22, and its welding temperature can not exert an influence with welding 2 welds to the front electrode 13 that had welded; Can not make the weld fusing produce situations such as rosin joint, sealing-off, guarantee that the firm welding of product is reliable.
Then with this repetitive operation; Promptly earlier the high-melting-point end 21 of a welding is welded on the solar battery sheet behind the front electrode 13, makes all to have had a welding 2 on each solar battery sheet 1, then each solar battery sheet is lined up row on mould; In that the low melting point end 22 of each welding 2 is described as epimere successively; The low melting point end 22 of last solar battery sheet is welded on the back electrode 14 on the one adjacent solar battery sheet of back, like this, has just accomplished the solar battery group of one group of series connection; To organize the solar battery group series connection more then, form solar battery array.
Perhaps on the front electrode 13 of every solar battery sheet, weld an end of a welding 2 earlier; Then; Each is contained solar battery sheet 1 upset of welding 2, the other end of welding 2 is welded on the adjacent back electrode 14, so just accomplished the series welding work of solar battery sheet.
Certainly, as required, also can be with each solar battery group parallel connection, to adapt to the current/voltage value of required output.
At last, obviously can reserve two weldings, draw as positive pole, the negative pole of array, this is conventionally known to one of skill in the art, seldom does description.
Certainly, follow-uply also comprise a lot of steps, it is known to be those skilled in the art, does not do concrete introduction in this example; Only do simple declaration, such as, also include glass plate, binding agent; Backsheet layer, be placed on glass plate on the workbench after, spread adhesive layer, on adhesive layer, place the array that the front has connected again; On array, lay one deck adhesive layer again, on adhesive layer, spread backsheet layer again, then with lamination in its global transfer to the laminating machine.And then the solar module that lamination is good loads onto frame, in the positive pole of reserving, the negative pole thereto, promptly makes solar module.
Claims (4)
1. a solar module comprises several solar and welding, connects through welding between the solar battery sheet, and said solar battery sheet is provided with first electrode and second electrode;
It is characterized in that: said first electrode and second electrode be two surfaces about solar battery sheet respectively, and corresponding up and down in the locus;
Welding one welding on one solar battery sheet, first electrode, another welding of welding on second electrode, first electrode is different with the welding fusing point of second electrode and welding.
2. solar module as claimed in claim 1 is characterized in that: the welding fusing point of first electrode and second electrode and welding differs 50-250 ℃.
3. solar module as claimed in claim 2 is characterized in that: the two ends of said welding are coated with the metal or metal alloy of different melting points respectively.
4. solar module as claimed in claim 1 is characterized in that: an end of said welding is coated with and welding fusing point different metallic or metal alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910108455A CN101937936B (en) | 2009-06-30 | 2009-06-30 | Solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910108455A CN101937936B (en) | 2009-06-30 | 2009-06-30 | Solar cell module |
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| Publication Number | Publication Date |
|---|---|
| CN101937936A CN101937936A (en) | 2011-01-05 |
| CN101937936B true CN101937936B (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910108455A Expired - Fee Related CN101937936B (en) | 2009-06-30 | 2009-06-30 | Solar cell module |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983223B (en) * | 2012-12-07 | 2015-07-08 | 天津英利新能源有限公司 | Production process and production equipment of photovoltaic module |
| CN103801779B (en) * | 2013-05-06 | 2016-12-28 | 宫昌萌 | Crystal silicon solar energy battery series welding method |
| CN108123194A (en) * | 2016-11-30 | 2018-06-05 | 凯镭思通讯设备（上海）有限公司 | A kind of thin-walled stretches cavity body filter and production method |
| CN107564987B (en) | 2017-09-07 | 2019-07-19 | 泰州隆基乐叶光伏科技有限公司 | A kind of welding structure applied to stacked wafer moudle |
| CN111347117A (en) * | 2018-12-20 | 2020-06-30 | 成都东腾薄膜太阳能有限公司 | Photovoltaic solder strip flux cleaning device, photovoltaic panel welding device and welding method thereof |
| CN114447155B (en) * | 2022-01-27 | 2024-04-12 | 中国科学院苏州纳米技术与纳米仿生研究所 | Method for manufacturing gate electrode of flexible solar cell and semiconductor device |
| CN117293231B (en) * | 2023-11-24 | 2024-06-21 | 天合光能股份有限公司 | Battery string repairing method, preparation method of replacement battery string and battery string |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201210493Y (en) * | 2008-04-17 | 2009-03-18 | 中电电气(上海)太阳能科技有限公司 | Encapsulation construction of solar cell component |
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- 2009-06-30 CN CN200910108455A patent/CN101937936B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201210493Y (en) * | 2008-04-17 | 2009-03-18 | 中电电气(上海)太阳能科技有限公司 | Encapsulation construction of solar cell component |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平6-260581A 1994.09.16 |
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| CN101937936A (en) | 2011-01-05 |
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