CN101814546A - Method suitable for soldering low-stress lead-free soldering strips - Google Patents
Method suitable for soldering low-stress lead-free soldering strips Download PDFInfo
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- CN101814546A CN101814546A CN200910046331A CN200910046331A CN101814546A CN 101814546 A CN101814546 A CN 101814546A CN 200910046331 A CN200910046331 A CN 200910046331A CN 200910046331 A CN200910046331 A CN 200910046331A CN 101814546 A CN101814546 A CN 101814546A
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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
Abstract
The invention provides a method suitable for soldering low-stress lead-free solder strips. The method is characterized by comprising the following steps of: preparing the materials and tools of battery pieces, lead-free solder strips, lead-free solder tin wires, an electric soldering iron and the like which are used for soldering and meet requirements; placing the battery pieces on a heating plate to preheat the battery pieces; soldering the lead-free solder strips on each of the battery pieces by using the electric soldering iron; placing the soldered battery pieces at fixed positions of a template; connecting the battery pieces in series by using the electrical soldering iron; splicing the batteries which are connected in series together according to a circuit diagram designed on drawing paper so that the battery strings are also connected in series and electrical contact is ensured to be good; and stacking the materials according to a stacking order designed in the drawing paper for laminating. The method has the advantages of high soldering quality, high production efficiency, low fragmentation rate, few battery hidden cracks after soldering, smooth solder strip surfaces without burr or pinhole, low soldering temperature, and electric power conservation, and suitability for large-scale production.
Description
Technical field
The present invention relates to a kind of welding method that is suitable for the low-stress lead-free welding, be used for manual welding battery sheet, belong to battery sheet manual welding method and technology field.
Background technology
On February 13rd, 2003, the STAFF of parliament of European Union and Ou Meng committee can announce on its " Official Journal " that " instruction of waste and old electric electric equipment " (WEEE) reaches " using some harmful substance instruction about restriction in electronic and electrical equipment " (ROHS), be intended to reduce negative effect that the electronic and electrical equipment discarded object brought and the use that limits harmful substance, reduce the processing of discarded object, effectively the control electron wastes is handled the propagation of back harmful substance, control environmental deterioration, alleviating shortage of resources .ROHS is about " some harmful substance is used the english abbreviation that limits instruction " The Restriction of the use of Certain HazardousSubstances in Electrical and Electronic Equipment " in the electronic and electrical equipment, claims ROHS instruction again in the European 2002/95/EC standard.
Six big material and the limit values that ROHS limits:
Regulation material European Union limit value proportion
Cd (cadmium and cadmium compound) 100PPM 0.01%
Pb (lead and lead compound) 1000PPM 0.1%
Hg (mercury and mercury compound) 1000PPM 0.1%
Cr6+ (hexavalent chromium compound) 1000PPM 0.1%
PBB (poly-bromo biphenyl) 1000PPM 0.1%
PBDE (poly-dibromodiphenyl ether) 1000PPM 0.1%
The welding that uses in traditional battery sheet welding procedure has been the lead welding band, and its lead tolerance is up to about 40%, and leaded welding is low because of its fusing point, and electric and satisfactory mechanical property is widely used in the welding of electronic product; There have the lead welding band to have welding temperature to be low, and rosin joint rate and leakage weldering rate are low, and fragment rate is low, the welding operability is good, the smooth in appearance after the welding, advantage such as smooth, Given this, there is the lead welding band high always, particularly unusual easy popularization aspect manual welding in the occupation rate in photovoltaic market.
Unleaded welding directly causes the pliability of welding itself to reduce and the fusing point rising because lead tolerance is few, and this just needs the rising of welding temperature, and the fragment rate that finally causes welding increases, and is not suitable for large-scale production.Because the reduction of welding pliability is unsmooth when making welding, cause piling the bad defective that tin or rosin joint etc. influence outward appearance easily simultaneously.Production yield and production efficiency have greatly been reduced.Solar components product unleaded, the inevitable requirement welding is realized unleaded, in order to meet the requirement of large-scale production, each manufacturer urgently wishes can realize the unleaded welding of welding as early as possible on the basis that guarantees certain production yield and production efficiency.
Summary of the invention
The unleaded welding method that the purpose of this invention is to provide the low and suitable large-scale production of a kind of fragment rate.
In order to achieve the above object, technical scheme of the present invention has provided a kind of welding method that is suitable for the low-stress lead-free welding, it is characterized in that, step is:
The electric iron that preparation before step 1, the welding is ready to weld employed satisfactory battery sheet, unleaded welding, lead-free soldering wire and has the 4C solder horn;
The temperature of step 2, welding battery sheet electric iron is set at 348～352 ℃, and the temperature of heating plate is set at 50～70 ℃, the battery sheet is placed on makes battery sheet preheating 5～10 seconds on the heating plate, with electric iron unleaded welding is welded on each sheet battery sheet then;
The temperature of step 3, serial connection battery sheet electric iron is set at 348～352 ℃, and the temperature of heating plate is set at 50～70 ℃, will be placed on the place, fixed position of template by the good battery sheet of step 2 welding, with electric iron the battery sheet is cascaded;
The temperature of step 4, battery strings splicing electric iron is set at 358～362 ℃, and the circuit diagram that designs according to drawing is stitched together the battery strings that has been cascaded in the step 3, makes all battery sheets form series connection, at last positive and negative lead wires is drawn;
Step 5, stackedly lift to the workbench top of lamination with glass with being loaded with the splicing of splicing good cell panel in the step 4, and make splicing become 25～35 degree inclination angles with work top with glass, take out splicing and cell panel be slipped on the glass plate or ethylene ethyl acrylate (EVA) plate that place mat is good in advance by carrying then with glass, at last according to the drawing regulation require with various materials in order lamination treat lamination.
What the present invention adopted is the electric iron with 4C solder horn, and battery sheet welding simultaneously and serial connection temperature are 348～352 ℃, and the temperature of splicing is 358～362 ℃, the cell panel that when stacked, no longer overturns at last, and adopt tilting to topple over the mode of operation of cell panel.After adopting such scheme, make by fragment rate of the present invention low.
Advantage of the present invention is:
When 1) guaranteeing welding quality, have the weld time identical, promptly guaranteed production efficiency with conventional manual welding;
2) its fragment rate is low, remains in 0.5%, and welding back latent the splitting of battery sheet lacked;
3) welding surface smoothing, no burr and pin hole;
4) welding temperature is low, saves energy;
5) be suitable for large-scale production.
Embodiment
Specify the present invention below in conjunction with embodiment.
Embodiment
A kind of welding method that is suitable for the low-stress lead-free welding provided by the invention, step is:
The inner heating type electric iron that preparation before step 1, the welding is ready to weld employed satisfactory battery sheet, unleaded welding, lead-free soldering wire and has the 4C solder horn;
Step 1.1, unleaded welding are put in the lead-free soldering flux and soaked 10 minutes, dry up stand-by then with hair-dryer;
The temperature of step 2, welding battery sheet electric iron is set at 350 ℃, and the temperature of heating plate is set at 60 ℃, the battery sheet is placed on makes battery sheet preheating 5 seconds on the heating plate, with electric iron unleaded welding is welded on each sheet battery sheet then, and this step can be decomposed into:
Step 2.1, unlatching electric iron switch, the heating station switch is set at 350 ℃ with flatiron temperature, and the temperature of heating plate is set at 60 ℃;
Step 2.2, from battery sheet case, take out a monoblock battery sheet, and the central position that the battery sheet is placed on heating station is made battery sheet preheating 5 seconds;
Step 2.3, unleaded welding front end 1/3rd places of taking on the other hand, another hand is taken the flatiron handle, and welding is aimed at battery sheet main grid electrode, and flatiron gently drops on the welding original position, and handle tilt angle 45 degree allow solder horn fully contact with welding, gently are pressed on the welding;
Step 2.4, a hand-motion flatiron handle move to left, and solder horn at the uniform velocity moves on welding, and another hand moves back left simultaneously, hold 1/3rd places, the welding left side, solder horn stops at 10mm place, distance battery sheet edge, and moves rapidly to the right, and solder horn leaves welding simultaneously;
Step 2.5, according to step 2.2 to the same process of step 2.4 welding second electrode, after welding finished, left hand gently drew welding, it is stand-by that the battery sheet is put into place, heating station left fixed position;
The temperature of step 3, serial connection battery sheet electric iron is set at 350 ℃, and the temperature of heating plate is set at 60 ℃, will be placed on the place, fixed position of template by the good battery sheet of step 2 welding, with electric iron the battery sheet is cascaded, and this step can be decomposed into:
Step 3.1, unlatching electric iron switch are set at 350 ℃ with flatiron temperature, and the temperature of heating plate is set at 60 ℃;
Step 3.2, begin operation, touch the battery sheet of getting well, make the battery sheet be close to template lower edge and left margin by the welding of described step 2 with finger from the template left end;
Step 3.3, pin welding with the welding back electrode main grid line that aligns, weld from right to left with flatiron, flatiron becomes miter angle with welding template face, guarantees that the solder horn plane fully contacts with welding, and speed of welding is even;
Step 3.4, employing padding mode from right to left guarantee that welding contacts fully with back electrode;
After step 3.5, serial connection finished, the inclination template was poured on splicing to the battery sheet with on glass according to electrode direction by template;
The temperature of step 4, battery strings splicing electric iron is set at 360 ℃, circuit diagram according to the drawing design is stitched together the battery strings that has been cascaded in the step 3, make all battery sheets form series connection, at last positive and negative lead wires is drawn, this step can be decomposed into:
Step 4.1, open to open the electric iron switch, the temperature of electric iron is set at 360 ℃;
Step 4.2, the splicing that will be placed with battery strings are lifted on the operating desk with glass, battery strings is sequenced according to the size of stipulating in the product drawing, battery sheet is between string and string pasted with locating adhesive tape, according to the busbar of the different position of drawing welding, at last positive and negative lead wires is drawn;
Step 5, stackedly lift to the workbench top of lamination with glass with being loaded with the splicing of splicing good cell panel in the step 4, and make splicing become 30 degree inclination angles with work top with glass, take out splicing and cell panel is slipped on the EVA plate that place mat is good in advance by carrying then with glass, at last according to the drawing regulation require with various materials in order lamination treat lamination, this step can be decomposed into:
Step 5.1, at first on the lamination work top, place the EVA plate, lift to the workbench top of lamination with glass with being loaded with the splicing of splicing good cell panel in the step 4 then, next, splicing uses the long limit of glass near the glass edge on the workbench, splicing is raised with the another side of glass, makes splicing become 30 to spend inclination angles with glass on the work top with glass;
Step 5.2, in the process that cell panel is placed to level, will splice to carry and release, cell panel is slipped on the EVA plate on the work top with glass;
Step 5.3, according to the drawing regulation require with various materials in order lamination treat lamination.
By facts have proved, the sub-fragment rate of present embodiment is 0.35%.
Claims (7)
1. a welding method that is suitable for the low-stress lead-free welding is characterized in that, step is:
The electric iron that preparation before step 1, the welding is ready to weld employed satisfactory battery sheet, unleaded welding, lead-free soldering wire and has the 4C solder horn;
The temperature of step 2, welding battery sheet electric iron is set at 348～352 ℃, and the temperature of heating plate is set at 50～70 ℃, the battery sheet is placed on makes battery sheet preheating 5～10 seconds on the heating plate, with electric iron unleaded welding is welded on each sheet battery sheet then;
The temperature of step 3, serial connection battery sheet electric iron is set at 348～352 ℃, and the temperature of heating plate is set at 50～70 ℃, will be placed on the place, fixed position of template by the good battery sheet of step 2 welding, with electric iron the battery sheet is cascaded;
The temperature of step 4, battery strings splicing electric iron is set at 358～362 ℃, and the circuit diagram that designs according to drawing is stitched together the battery strings that has been cascaded in the step 3, makes all battery sheets form series connection, draws positive and negative lead wires at last;
Step 5, stackedly lift to the workbench top of lamination with glass with being loaded with the splicing of splicing good cell panel in the step 4, and make splicing become 25～35 degree inclination angles with work top with glass, take out splicing and cell panel be slipped on the glass plate or ethylene ethyl acrylate plate that place mat is good in advance by carrying then with glass, according to the drawing regulation require with various materials in order lamination treat lamination.
2. a kind of welding method that is suitable for the low-stress lead-free welding as claimed in claim 1 is characterized in that having between step 1 and step 2:
Step 1.1, unleaded welding is put into soaks 5～15 minutes in the lead-free soldering flux, dry up stand-by then with hair-dryer.
3. a kind of welding method that is suitable for the low-stress lead-free welding as claimed in claim 1 is characterized in that described step 2 comprises the following steps:
Step 2.1, unlatching electric iron switch, the heating station switch is set at 348～352 ℃ with flatiron temperature, and the temperature of heating plate is set at 50～70 ℃;
Step 2.2, from battery sheet case, take out a monoblock battery sheet, and the central position that the battery sheet is placed on heating station is made battery sheet preheating 5～10 seconds;
Step 2.3, unleaded welding front end 1/3rd places of taking on the other hand, another hand is taken the flatiron handle, and welding is aimed at battery sheet main grid electrode, flatiron gently drops on the welding original position, handle tilt angle 40～50 degree allow solder horn fully contact with welding, gently are pressed on the welding;
Step 2.4, a hand-motion flatiron handle move to left, and solder horn at the uniform velocity moves on welding, and another hand moves back left simultaneously, hold 1/3rd places, the welding left side, solder horn stops at 8～12mm place, distance battery sheet edge, and moves rapidly to the right, and solder horn leaves welding simultaneously;
Step 2.5, according to step 2.2 to the same process of step 2.4 welding second electrode, after welding finished, left hand gently drew welding, it is stand-by that the battery sheet is put into place, heating station left fixed position.
4. a kind of welding method that is suitable for the low-stress lead-free welding as claimed in claim 1 is characterized in that described step 3 comprises the following steps:
Step 3.1, unlatching electric iron switch, the heating station switch is set at 348～352 ℃ with flatiron temperature, and the temperature of heating plate is set at 50～70 ℃;
Step 3.2, begin operation, touch the battery sheet of getting well, make the battery sheet be close to template lower edge and left margin by the welding of described step 2 with finger from the template left end;
Step 3.3, pin welding with the welding back electrode main grid line that aligns, weld from right to left with flatiron, flatiron becomes 40～50 degree angles with welding template face, guarantees that the solder horn plane fully contacts with welding, and speed of welding is even;
Step 3.4, employing padding mode from right to left guarantee that welding contacts fully with back electrode;
After step 3.5, serial connection finished, the inclination template was poured on splicing to the battery sheet with on glass according to electrode direction by template.
5. a kind of welding method that is suitable for the low-stress lead-free welding as claimed in claim 4 is characterized in that described step 4 comprises the following steps:
Step 4.1, open to open the electric iron switch, the temperature of electric iron is set at 358～362 ℃;
Step 4.2, the splicing that will be placed with battery strings are lifted on the operating desk with glass, and battery strings is sequenced according to the size of stipulating in the product drawing, and battery sheet is between string and string pasted with locating adhesive tape, according to the busbar of the different position of drawing welding.
6. a kind of welding method that is suitable for the low-stress lead-free welding as claimed in claim 5 is characterized in that described step 5 comprises the following steps:
Step 5.1, at first after placing glass plate or ethylene ethyl acrylate plate on the lamination work top, lift to the workbench top of lamination with glass with being loaded with the splicing of splicing good cell panel in the step 4 then, next, splicing uses the long limit of glass near the glass edge on the workbench, splicing is raised with the another side of glass, makes splicing become 25～35 to spend inclination angles with glass on the work top with glass;
Step 5.2, in the process that cell panel is placed to level, will splice to carry and release, cell panel is slipped on the glass plate or ethylene ethyl acrylate plate on the work top with glass;
Step 5.3, according to the drawing regulation require with various materials in order lamination treat lamination.
7. as each described a kind of welding method that is suitable for the low-stress lead-free welding in the claim 1 to 6, it is characterized in that described electric iron is an inner heating type electric iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910046331A CN101814546A (en) | 2009-02-19 | 2009-02-19 | Method suitable for soldering low-stress lead-free soldering strips |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910046331A CN101814546A (en) | 2009-02-19 | 2009-02-19 | Method suitable for soldering low-stress lead-free soldering strips |
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| CN101814546A true CN101814546A (en) | 2010-08-25 |
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| CN200910046331A Pending CN101814546A (en) | 2009-02-19 | 2009-02-19 | Method suitable for soldering low-stress lead-free soldering strips |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328140A (en) * | 2011-08-12 | 2012-01-25 | 无锡尚品太阳能电力科技有限公司 | Single-piece welding process for battery plates |
| CN103785918A (en) * | 2014-01-20 | 2014-05-14 | 苏州盛康光伏科技有限公司 | Technology for welding solder strip on solar cell sheet |
| CN104022180A (en) * | 2014-05-12 | 2014-09-03 | 山东中晶新能源有限公司 | Welding method for improving power of photovoltaic module |
| CN104148758A (en) * | 2014-08-14 | 2014-11-19 | 无锡尚品太阳能电力科技有限公司 | Single-soldering process for silver-bearing thickened solder strip and battery piece |
| CN105633184A (en) * | 2016-03-09 | 2016-06-01 | 中利腾晖光伏科技有限公司 | Environment-friendly solar component, solar power generation system and photovoltaic power station |
-
2009
- 2009-02-19 CN CN200910046331A patent/CN101814546A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328140A (en) * | 2011-08-12 | 2012-01-25 | 无锡尚品太阳能电力科技有限公司 | Single-piece welding process for battery plates |
| CN103785918A (en) * | 2014-01-20 | 2014-05-14 | 苏州盛康光伏科技有限公司 | Technology for welding solder strip on solar cell sheet |
| CN103785918B (en) * | 2014-01-20 | 2015-11-25 | 苏州盛康光伏科技有限公司 | The welding procedure of welding on solar battery sheet |
| CN104022180A (en) * | 2014-05-12 | 2014-09-03 | 山东中晶新能源有限公司 | Welding method for improving power of photovoltaic module |
| CN104022180B (en) * | 2014-05-12 | 2016-08-03 | 山东中晶新能源有限公司 | Improve the welding method of photovoltaic module power |
| CN104148758A (en) * | 2014-08-14 | 2014-11-19 | 无锡尚品太阳能电力科技有限公司 | Single-soldering process for silver-bearing thickened solder strip and battery piece |
| CN105633184A (en) * | 2016-03-09 | 2016-06-01 | 中利腾晖光伏科技有限公司 | Environment-friendly solar component, solar power generation system and photovoltaic power station |
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Application publication date: 20100825 |