CN111673315A - Special soldering flux for welding multi-main-grid solar cell - Google Patents
Special soldering flux for welding multi-main-grid solar cell Download PDFInfo
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- CN111673315A CN111673315A CN202010485471.1A CN202010485471A CN111673315A CN 111673315 A CN111673315 A CN 111673315A CN 202010485471 A CN202010485471 A CN 202010485471A CN 111673315 A CN111673315 A CN 111673315A
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- welding
- flux
- soldering
- solar cell
- grid solar
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- 238000003466 welding Methods 0.000 title claims abstract description 99
- 230000004907 flux Effects 0.000 title claims abstract description 77
- 238000005476 soldering Methods 0.000 title claims abstract description 76
- 239000002904 solvent Substances 0.000 claims abstract description 14
- 239000004094 surface-active agent Substances 0.000 claims abstract description 10
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 6
- 239000013543 active substance Substances 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims description 16
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid group Chemical group C(CCCCC(=O)O)(=O)O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 239000012190 activator Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical group CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 3
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 3
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 3
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- 235000011037 adipic acid Nutrition 0.000 claims description 3
- 239000001361 adipic acid Substances 0.000 claims description 3
- -1 alcohol ethers Chemical class 0.000 claims description 3
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 3
- 239000012964 benzotriazole Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229940075529 glyceryl stearate Drugs 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical group CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 230000000704 physical effect Effects 0.000 claims description 3
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 3
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 3
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000008439 repair process Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000007664 blowing Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000003908 quality control method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 5
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 5
- 230000003213 activating effect Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 5
- 238000000429 assembly Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 229940008841 1,6-hexamethylene diisocyanate Drugs 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3612—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with organic compounds as principal constituents
- B23K35/3615—N-compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention aims to disclose a special soldering flux for welding a multi-main grid solar cell, which comprises the following components in percentage by mass: 1.5-3.2% of active agent, 0.5-1.5% of surfactant, 1.5-2.0% of auxiliary agent and 93.3-96.5% of bulk solvent; compared with the prior art, the welding repair proportion can be reduced by about 10 percent, and the cost price of the component can be reduced by about 0.008 yuan/watt; the welding quality is improved, the reliability of the assembly is improved, the service life is prolonged, the attenuation speed of the assembly is reduced, and the generating capacity is improved; in the using process, the crystal is less, the residues after welding are less, the quality control in the production process of the assembly is facilitated, and the maintenance of automatic welding equipment is facilitated; the solvent can be directly used without blowing and volatilizing the solvent to change the solid content, the field working environment is protected, and the purpose of the invention is realized.
Description
Technical Field
The invention relates to a soldering flux, in particular to a special soldering flux for soldering a multi-main-grid solar cell.
Background
Welding is the most important process for producing the photovoltaic module, and the welding quality determines the power generation capacity and the service life of the module. The soldering flux is an auxiliary material used in welding, and the main function of the soldering flux is to remove oxides on the surfaces of solder and a welded base metal so as to ensure that the metal surface reaches necessary cleanliness; the surface is prevented from being oxidized again during welding, the surface tension of the welding flux is reduced, and the welding performance is improved; the welding area is protected, the overflow of the liquid solder is improved, the infiltration capacity is enhanced, the heat transfer of the welding area is improved, the performance of the flux is balanced, and the quality of the assembly is directly influenced.
At present, the active ingredients of the traditional soldering flux on the market contain halogen, and the soldering flux containing the halogen can quickly remove the oxide film of a welding pad and enhance the wettability of solder, but the addition of the halogen can weaken the reliability of the welding point, reduce the surface insulation resistance and is unfavorable for the ecological environment.
At present, infrared welding is a general process technology in automatic welding, and on the premise of ensuring product quality, a multi-section heating method is improved to increase welding starting temperature, shorten welding period and improve welding efficiency, so that the phenomenon of hidden cracking of a battery piece caused by rapid temperature rise is greatly improved, and equipment stability and production efficiency are improved. In automatic production equipment, the production speed and the production efficiency are gradually improved, and the requirement on the soldering flux is higher and higher.
The number of welding points of the multi-main-grid solar cell is multiplied due to the increase of the number of grid lines, and the width of the grid lines is narrowed; the circular thin welding strip is adopted to replace a traditional flat welding strip during welding of the multi-main-grid solar cell, more accurate positioning precision is needed, the positioning difficulty of the welding strip is increased, the welding contact area is small, the false welding is easy, and the requirements on welding quality, welding uniformity and welding consistency are higher.
The existing soldering flux pollutes the working environment during welding; the solid content value and acid value index of the soldering flux can not be accurately controlled; lamination bubbles are easily caused due to much residual soldering flux after welding; the production efficiency of automatic welding equipment is reduced due to more residual and more crystals of the soldering flux; the active components of the soldering flux contain halogen, and the reliability of the soldering flux on a welding point cannot be guaranteed.
Therefore, a flux dedicated for soldering a multi-main grid solar cell is particularly needed to solve the existing problems.
Disclosure of Invention
The invention aims to provide a special soldering flux for welding a multi-main-grid solar cell, which solves the problems of unstable welding quality caused by inaccurate welding positioning of a circular welding strip and poor soldering effect and environmental pollution of the traditional conventional soldering flux due to more residues after welding.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
the special soldering flux for welding the multi-main grid solar cell is characterized by comprising the following components in percentage by mass:
1.5-3.2% of active agent, 0.5-1.5% of surfactant, 1.5-2.0% of auxiliary agent and 93.3-96.5% of bulk solvent.
In one embodiment of the invention, the activator is adipic acid, dimethylamine, octadecanoic acid and the temperature at which the activator is mixed is 25-55 ℃.
In one embodiment of the invention, the surfactant is nonylphenol polyoxyethylene ether.
In one embodiment of the invention, the auxiliary agent is glyceryl stearate, benzotriazole, toluene diisocyanate, diphenylmethane diisocyanate, 1, 6-hexamethylene diisocyanate, and titanium dioxide.
In one embodiment of the present invention, the bulk solvent is alcohol ethers such as isopropyl alcohol, butyl cellosolve and the like.
In one embodiment of the invention, the physical properties of the flux special for soldering the multi-master-grid solar cell are as follows:
the specific gravity is 0.795 +/-0.005, the solid content is 3.8 +/-0.3 percent, and the acid value is 31.0 +/-3 mg KOH/g of flux.
In one embodiment of the invention, the reliability test result of the flux special for soldering the multi-master-grid solar cell is as follows:
and (3) a copper mirror corrosion test is performed, wherein the copper mirror corrosion test is performed, the chromium acid salt test paper is qualified, the chloride and the bromide are not detected, the fluoride is detected to be qualified, and the surface insulation resistance (85 ℃, 85% RH) is passed.
In one embodiment of the invention, the storage condition of the flux special for soldering the multi-master-grid solar cell is as follows:
the soldering flux is flammable, needs to be far away from a fire source, is stored under the environment of 10-25 ℃ (50-77 DEG F), and has a shelf life of 1 year.
Compared with the prior art, the special soldering flux for welding the multi-main grid solar cell can reduce the welding repair proportion by about 10 percent, and reduce the cost price of the component by about 0.008 yuan/watt; the welding quality is improved, the reliability of the assembly is improved, the service life is prolonged, the attenuation speed of the assembly is reduced, and the generating capacity is improved; in the using process, the crystal is less, the residues after welding are less, the quality control in the production process of the assembly is facilitated, and the maintenance of automatic welding equipment is facilitated; the solvent can be directly used without blowing and volatilizing the solvent to change the solid content, the field working environment is protected, and the purpose of the invention is realized.
The features of the present invention will be clearly understood by reference to the following detailed description of the preferred embodiments of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the concrete.
The invention discloses a special soldering flux for welding a multi-main grid solar cell, which comprises the following components in percentage by mass:
1.5-3.2% of active agent, 0.5-1.5% of surfactant, 1.5-2.0% of auxiliary agent and 93.3-96.5% of bulk solvent.
The activating agent is adipic acid, dimethylamine and octadecanoic acid, and the temperature of the activating agent during mixing is 25-55 ℃.
The surfactant is nonylphenol polyoxyethylene ether.
The auxiliary agent is glyceryl stearate, benzotriazole, toluene diisocyanate, diphenylmethane diisocyanate, 1, 6-hexamethylene diisocyanate and titanium dioxide.
The bulk solvent is alcohol ethers such as isopropanol, butyl cellosolve and the like.
The physical properties of the special soldering flux for welding the multi-main grid solar cell are as follows:
the specific gravity is 0.795 +/-0.005, the solid content is 3.8 +/-0.3 percent, and the acid value is 31.0 +/-3 mg KOH/g of flux.
The reliability test result of the special soldering flux for welding the multi-main grid solar cell is as follows:
and (3) a copper mirror corrosion test is performed, wherein the copper mirror corrosion test is performed, the chromium acid salt test paper is qualified, the chloride and the bromide are not detected, the fluoride is detected to be qualified, and the surface insulation resistance (85 ℃, 85% RH) is passed.
The storage conditions of the special soldering flux for welding the multi-main grid solar cell are as follows:
the soldering flux is flammable, needs to be far away from a fire source, is stored under the environment of 10-25 ℃ (50-77 DEG F), and has a shelf life of 1 year.
In the production process, equipment, raw materials, auxiliary materials and a container for storing the soldering flux can generate tiny granular substances, the performance of the soldering flux can be reduced, and the reliability test of welding and later period is influenced. Therefore, the container needs to be cleaned regularly, and meanwhile, fresh soldering flux needs to be replaced timely, the stability of the soldering flux is kept, and the soldering flux has a positive help on the welding effect, and particularly for automatic welding of the multi-main grid solar cell, the soldering flux in the container needs to be replaced regularly.
Example 1
The special soldering flux for welding the multi-main grid solar cell in the embodiment comprises the following components in percentage by mass: 1.5% of activating agent, 0.5% of surfactant, 1.5% of additive and 96.5% of bulk solvent.
Example 2
The special soldering flux for welding the multi-main grid solar cell in the embodiment comprises the following components in percentage by mass: 2% of activating agent, 0.8% of surfactant, 1.8% of additive and 95.4% of bulk solvent.
Example 3
The special soldering flux for welding the multi-main grid solar cell in the embodiment comprises the following components in percentage by mass: 3.2% of activating agent, 1.5% of surfactant, 2.0% of additive and 93.3% of bulk solvent.
Example 4
The experimental scheme of the soldering effect of the special soldering flux for soldering the multi-master-grid solar cell in the embodiment comprises the following steps:
the first step is as follows: using 720 battery pieces with the same batch, the same power and the same specification;
the second step is that: selecting a series welding machine, and setting the same welding parameters including welding temperature, lamp tube power, welding time, welding strip tension coefficient and the like;
the third step: cleaning the stringer, thoroughly removing the flux residue, and adding conventional flux;
the fourth step: starting a series welding machine, welding 5 assemblies after full preheating, and recording the proportion of the rosin joint after EL test;
the fifth step: cleaning a series welding machine, thoroughly removing the residues of the soldering flux, and adding the special soldering flux;
and a sixth step: starting a series welding machine, welding 5 assemblies after full preheating, and recording the proportion of the rosin joint after EL test;
the seventh step: and through data comparison, the soldering rosin occupation ratio of the conventional soldering flux and the special soldering flux is obtained.
Example 5
The experimental scheme of the soldering effect of the special soldering flux for soldering the multi-master-grid solar cell in the embodiment comprises the following steps:
the first step is as follows: preparing 12 coils of a welding strip A and a welding strip B of the same specification and different manufacturers respectively;
the second step is that: setting the same welding parameters including welding temperature, lamp tube power, welding time, welding strip tension coefficient and the like on the same series welding machine, adding special scaling powder, respectively welding 5 assemblies by using a welding strip A, and welding 5 assemblies by using a welding strip B;
the third step: recording the rosin joint proportion through an EL test;
the fourth step: through data comparison, the matching performance of the welding strip and the special soldering flux of different manufacturers is different.
The soldering flux special for soldering the multi-master-grid solar cell has the following soldering effects compared with the conventional soldering flux:
1. and (3) cold solder joint comparison:
conventional flux welding insufficient solder repair rate: 13 percent; the flux welding rosin joint repair rate special for welding the multi-main grid solar cell of the embodiment is as follows: 6 percent;
2. offset welding comparison:
the conventional soldering flux has the following offset welding repair rate: 3 percent; the special soldering flux for welding the multi-main-grid solar cell of the embodiment has the following welding offset welding repair rate: 1.5 percent;
3. and (3) comparison of welding tension:
welding tension value of conventional soldering flux: 0.6N; the welding tension value of the special soldering flux for welding the multi-main grid solar cell of the embodiment is as follows: 2.73N;
4. hidden crack comparison:
the conventional soldering flux welding hidden crack repair rate is as follows: 9.8 percent; the welding hidden crack repair rate of the special soldering flux for welding the multi-main grid solar cell of the embodiment is as follows: 8.7 percent;
5. comparison of residues after welding:
conventional flux postweld residue: a plurality of; the special soldering flux for welding the multi-main grid solar cell of the embodiment has the following residues after welding: less.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (8)
1. The special soldering flux for welding the multi-main grid solar cell is characterized by comprising the following components in percentage by mass:
1.5-3.2% of active agent, 0.5-1.5% of surfactant, 1.5-2.0% of auxiliary agent and 93.3-96.5% of bulk solvent.
2. The flux for soldering a multi-master-grid solar cell according to claim 1, wherein the activator is adipic acid, dimethylamine or octadecanoic acid, and the temperature of the activator is 25-55 ℃ during mixing.
3. The flux for soldering a multi-primary grid solar cell according to claim 1, wherein the surfactant is nonylphenol polyoxyethylene ether.
4. The special soldering flux for welding the multi-main-grid solar cell according to claim 1, wherein the auxiliary agent is glyceryl stearate, benzotriazole, toluene diisocyanate, diphenylmethane diisocyanate, 1.6-hexamethylene diisocyanate, and titanium dioxide.
5. The flux for soldering a multi-primary grid solar cell according to claim 1, wherein the bulk solvent is alcohol ethers such as isopropyl alcohol and butyl cellosolve.
6. The special flux for soldering of multi-master grid solar cells according to claim 1, wherein the physical properties of the special flux are as follows:
the specific gravity is 0.795 +/-0.005, the solid content is 3.8 +/-0.3 percent, and the acid value is 31.0 +/-3 mg KOH/g of flux.
7. The flux for soldering a multi-primary grid solar cell according to claim 1, wherein the reliability test result of the flux for soldering is as follows:
and (3) a copper mirror corrosion test is performed, wherein the copper mirror corrosion test is performed, the chromium acid salt test paper is qualified, the chloride and the bromide are not detected, the fluoride is detected to be qualified, and the surface insulation resistance (85 ℃, 85% RH) is passed.
8. The special soldering flux for soldering of multi-master grid solar cells according to claim 1, wherein the special soldering flux is stored under the following conditions:
the soldering flux is flammable, needs to be far away from a fire source, is stored under the environment of 10-25 ℃ (50-77 DEG F), and has a shelf life of 1 year.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010485471.1A CN111673315A (en) | 2020-06-01 | 2020-06-01 | Special soldering flux for welding multi-main-grid solar cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010485471.1A CN111673315A (en) | 2020-06-01 | 2020-06-01 | Special soldering flux for welding multi-main-grid solar cell |
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| CN111673315A true CN111673315A (en) | 2020-09-18 |
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| CN202010485471.1A Pending CN111673315A (en) | 2020-06-01 | 2020-06-01 | Special soldering flux for welding multi-main-grid solar cell |
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| CN103862200A (en) * | 2014-03-24 | 2014-06-18 | 吉安谊盛电子材料有限公司 | Scaling powder special for welding of solar assemblies |
| CN104690450A (en) * | 2015-04-07 | 2015-06-10 | 武汉谊盛新材料科技有限公司 | Special scaling powder for automatic welding of photovoltaic battery piece |
| CN105269181A (en) * | 2015-06-19 | 2016-01-27 | 常州天合光伏焊带材料有限公司 | High-activity scaling powder for photovoltaic solder strip |
| CN111055045A (en) * | 2019-12-29 | 2020-04-24 | 武汉风帆电化科技股份有限公司 | Special soldering flux for photovoltaic solder strip |
-
2020
- 2020-06-01 CN CN202010485471.1A patent/CN111673315A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11267884A (en) * | 1998-03-23 | 1999-10-05 | Mitsubishi Electric Corp | Flux and cream solder for solar battery module |
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