CN111203452B - Novel photovoltaic solder strip preparation device and preparation method thereof - Google Patents
Novel photovoltaic solder strip preparation device and preparation method thereof Download PDFInfo
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- CN111203452B CN111203452B CN202010071161.5A CN202010071161A CN111203452B CN 111203452 B CN111203452 B CN 111203452B CN 202010071161 A CN202010071161 A CN 202010071161A CN 111203452 B CN111203452 B CN 111203452B
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- 229910000679 solder Inorganic materials 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims abstract description 41
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 91
- 239000000956 alloy Substances 0.000 claims abstract description 91
- 238000005219 brazing Methods 0.000 claims abstract description 90
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 73
- 238000003825 pressing Methods 0.000 claims abstract description 58
- 238000003466 welding Methods 0.000 claims abstract description 25
- 238000004140 cleaning Methods 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims description 32
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 30
- 238000005491 wire drawing Methods 0.000 claims description 30
- 238000005096 rolling process Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 19
- 238000004804 winding Methods 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000007598 dipping method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 10
- 210000004027 cell Anatomy 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 229910020816 Sn Pb Inorganic materials 0.000 description 3
- 229910020922 Sn-Pb Inorganic materials 0.000 description 3
- 229910008783 Sn—Pb Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/045—Manufacture of wire or bars with particular section or properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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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
-
- 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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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
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- Photovoltaic Devices (AREA)
Abstract
The invention discloses a novel photovoltaic solder strip preparation device and a preparation method, and the novel photovoltaic solder strip preparation device is characterized in that a special groove pressing fixture and a special fixing fixture are added on the basis of a flux-cored wire preparation device widely applied in engineering, and the original cleaning device, a forming device, a reducing device and a mould are combined to finally process a brazing alloy strip wrapped with a copper wire into a photovoltaic solder wire. According to the preparation method of the novel photovoltaic welding strip, the shading area of the processed photovoltaic welding wire is smaller than that of the traditional welding strip, so that the photovoltaic efficiency is improved, the processing cost is reduced, the uniformity of the prepared welding strip is higher than that of the traditional hot dipping process, the processing precision is higher, and the photovoltaic conversion efficiency is directly or indirectly improved.
Description
Technical Field
The invention belongs to the technical field of photovoltaic solder strips, relates to a novel photovoltaic solder strip preparation device, and particularly relates to a preparation method of a novel photovoltaic solder strip by using the preparation device.
Background
With the increasing environmental pollution, the demand of human beings for clean energy is increasing, and the development of solar power generation technology is promoted. At present, the raw material of the solar cell mainly comprises crystalline silicon, wherein the most widely applied solar cell comprises monocrystalline silicon and polycrystalline silicon solar cells, the application technology is relatively mature, and the solar cell is safe and reliable. The solar cell is fragile and has harsh requirements on the working environment, so that the packaging protection of the solar cell becomes more important in order to ensure the normal operation of the solar cell. The performance of the photovoltaic solder strip, which is one of the important components in the solar cell packaging, will directly affect the performance of the solar cell component. Factors influencing the performance of the photovoltaic solder strip not only include alloy solder, but also the preparation process is one of the main factors influencing the packaging performance of the photovoltaic solder strip.
At present, the preparation process of the photovoltaic solder strip mainly adopts a hot dipping process, namely, the copper strip after decontamination treatment passes through a solder pot, copper wires are used for removing the dipping solder, and then the photovoltaic solder strip is prepared by drying. The uniformity of the solder on the surface of the solder strip prepared by the method is not easy to control. Therefore, it is necessary to research the preparation process of the novel photovoltaic solder strip.
Disclosure of Invention
The invention aims to provide a novel photovoltaic solder strip preparation device, which solves the problem that the uniformity of the solder on the surface of the prepared solder strip is difficult to control in the prior art.
The invention also aims to provide a novel photovoltaic solder strip preparation method, which solves the problem that the photovoltaic conversion efficiency is reduced because the conventional photovoltaic solder strip shields more light rays incident on a photovoltaic module in the prior art.
The invention adopts a first technical scheme that the novel photovoltaic solder strip preparation device comprises an operation table, wherein a fixed plate is fixed on the operation table, a material plate group is arranged at one end of the operation table, a motor-driven wire winding wheel is arranged at the other end of the operation table, and the motor-driven wire winding wheel is connected with a motor. The direction from the material disc group to the motor-driven wire collecting wheel is a wire drawing direction, the operating platform is sequentially provided with a tensioning clamp, a forming clamp and a closing clamp along the wire drawing direction, a groove pressing clamp and a fixing clamp are sequentially arranged between the tensioning clamp and the forming clamp along the wire drawing direction, the groove pressing clamp and the fixing clamp are installed on the operating platform, and the tensioning clamp, the groove pressing clamp, the fixing clamp, the forming clamp and the closing clamp are placed in a collinear mode.
The invention adopts another technical scheme that a novel photovoltaic solder strip preparation method is implemented according to the following steps:
and 6, starting a motor, driving a wire winding wheel to start rotary wire drawing by the motor, and driving the wire winding wheel to collect the prepared photovoltaic welding strip by the motor.
The invention is also characterized in that:
the material disc group comprises a copper wire alloy disc and a brazing filler metal alloy disc, the copper wire alloy disc and the brazing filler metal alloy disc are located on the same vertical plane and are arranged in a staggered mode, and the copper wire alloy disc and the brazing filler metal alloy disc are matched to feed wires to the operating table.
The indent fixture is including indent U type frame, and the end fixing of indent U type frame two walls is at the operation panel, the outer wall connection fixed plate of indent U type frame, and the middle part of indent U type frame is provided with the upper portion gyro wheel and compresses tightly the pivot, is provided with the pivot between indent U type frame two walls, and the cover is equipped with the lower part gyro wheel in the pivot, and the lower part gyro wheel teeth of a cogwheel is opened there is U type recess, and indent U type frame is close to fixing fixture one side lateral wall rigid coupling and has upper portion roller components.
Upper portion wheel components is including pivot U type frame, indent U type frame is close to fixed fixture one side lateral wall rigid coupling pivot U type frame, pivot U type frame inboard is connected with gyro wheel U type frame, gyro wheel U type frame is the U type frame that the side is the L type, gyro wheel U type frame both ends all are provided with the pivot, gyro wheel U type frame one end is through pivot and pivot U type frame swing joint, the cover is equipped with the upper portion gyro wheel in the pivot of the gyro wheel U type frame other end, the teeth of a cogwheel of upper portion gyro wheel is bellied arc surface, it has the recess to open on the teeth of a cogwheel, upper portion gyro wheel gomphosis is in the U type recess of the lower part gyro wheel teeth of a cogwheel.
The fixing clamp comprises a lower roller and an upper roller, the teeth of the lower roller are provided with U-shaped grooves, the teeth of the upper roller are convex arc surfaces, the teeth of the upper roller are provided with grooves, the upper roller is embedded in the U-shaped grooves of the teeth of the lower roller, and the lower roller and the upper roller are movably connected with the fixing plate through bearings.
A preparation device adopted by a novel photovoltaic welding strip preparation method comprises an operation table, wherein a fixed plate is fixed on the operation table, a material disc group is arranged at one end of the operation table, a motor-driven wire collecting wheel is arranged at the other end of the operation table, the motor-driven wire collecting wheel is electrically connected with a motor, the direction from the material disc group to the motor-driven wire collecting wheel is a wire drawing direction, a tensioning clamp, a forming clamp and a closing clamp are sequentially arranged on the operation table along the wire drawing direction, a groove pressing clamp and a fixing clamp are sequentially arranged between the tensioning clamp and the forming clamp along the wire drawing direction, the groove pressing clamp and the fixing clamp are installed on the operation table, and the tensioning clamp, the groove pressing clamp, the fixing clamp, the forming clamp and the closing clamp are placed in a collinear manner;
the material disc set comprises a copper wire alloy disc and a brazing filler metal alloy disc, the copper wire alloy disc and the brazing filler metal alloy disc are positioned on the same vertical plane and are arranged in a staggered mode, and the copper wire alloy disc and the brazing filler metal alloy disc are matched to feed wires to the operating table;
the grooving clamp comprises a grooving U-shaped frame, the end parts of two arms of the grooving U-shaped frame are fixedly connected with an operating table, the outer wall of one arm of the grooving U-shaped frame is connected with a fixing plate, an upper roller pressing rotating shaft is arranged in the middle of the grooving U-shaped frame, a rotating shaft is arranged between the two arms of the grooving U-shaped frame, a lower roller is sleeved on the rotating shaft, a U-shaped groove is formed in the gear tooth of the lower roller, and an upper roller assembly is fixedly connected to the side wall of the grooving U-shaped frame, close to one side of the fixing clamp;
the upper roller assembly comprises a rotating shaft U-shaped frame, the side wall of the groove pressing U-shaped frame, close to one side of the fixing clamp, is fixedly connected with the rotating shaft U-shaped frame, the inner side of the rotating shaft U-shaped frame is connected with a roller U-shaped frame, the side face of the roller U-shaped frame is L-shaped, rotating shafts are arranged at two ends of the roller U-shaped frame, one end of the roller U-shaped frame is movably connected with the rotating shaft U-shaped frame through the rotating shaft, an upper roller is sleeved on the rotating shaft at the other end of the roller U-shaped frame, gear teeth of the upper roller are convex arc surfaces, grooves are formed in the gear teeth, and the upper roller is embedded in the U-shaped grooves of the gear teeth of the lower roller;
the fixing clamp comprises a lower roller and an upper roller, the teeth of the lower roller are provided with U-shaped grooves, the teeth of the upper roller are convex arc surfaces, the teeth of the upper roller are provided with grooves, the upper roller is embedded in the U-shaped grooves of the teeth of the lower roller, and the lower roller and the upper roller are movably connected with the fixing plate through bearings.
The step 2 is implemented according to the following steps:
step 2.1, rolling the brazing alloy strip to the shape of the U-shaped groove, and wrapping the copper wire with the brazing alloy strip in the shape of the rolled U-shaped groove;
step 2.2, using a sharpening fixture to sharpen the U-shaped groove brazing alloy strip wrapped with the copper wire obtained in the step 2.1;
the tool for rolling the brazing alloy strip in the step 2.1 is specifically a groove rolling fixture, and the tip rolling fixture in the step 2.2 is a roller rolling device with a group of grooves of different sizes.
The invention has the beneficial effects that:
1. according to the preparation method of the novel photovoltaic solder strip, the photovoltaic solder wire with the required size is prepared by the solder alloy strip and the copper wire through the device, so that the problem that the solder strip shields light rays incident on a photovoltaic module is solved, and the photovoltaic conversion efficiency is improved;
2. the preparation method of the novel photovoltaic solder strip avoids the problem of uneven adhesion of the brazing filler metal on the surface of the copper wire in the traditional solder strip manufacturing process, so that the brazing filler metal alloy strip is uniformly wrapped on the surface of the copper wire, and the photovoltaic conversion efficiency is indirectly improved;
3. the preparation method of the novel photovoltaic welding strip reduces the production cost of the photovoltaic welding strip, namely, the welding strip and the welding wire with the same volume have less brazing filler metal required by the welding wire, so that the cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a novel photovoltaic solder strip manufacturing apparatus according to the present invention;
FIG. 2 is a side view of a groove pressing component of the novel photovoltaic solder strip manufacturing device of the invention;
FIG. 3 is a schematic structural diagram of a groove pressing component of the novel photovoltaic solder strip manufacturing device of the invention;
FIG. 4 is a schematic view of a roller structure of a groove pressing component of the novel photovoltaic solder strip manufacturing device of the invention;
FIG. 5 is a side view of a fixing component of the novel photovoltaic solder strip manufacturing apparatus of the present invention;
FIG. 6 is a schematic structural diagram of a fixing roller of the novel photovoltaic solder strip manufacturing apparatus of the present invention;
fig. 7 is a flow chart of a novel photovoltaic solder strip manufacturing method of the present invention.
1. The device comprises an operation table, 2 parts of a fixing plate, 3 parts of a grooving clamp, 3-1 parts of an upper roller assembly, 3-2 parts of a grooving U-shaped frame, 3-3 parts of a lower roller, 3-4 parts of an upper roller pressing rotating shaft, 3-1-1 parts of a rotating shaft U-shaped frame, 3-1-2 parts of a roller U-shaped frame, 3-1-3 parts of an upper roller, 4 parts of a fixing clamp, 4-1 parts of a lower roller, 4-2 parts of an upper roller, 5 parts of a tensioning clamp, 6 parts of a forming clamp, 7 parts of a closing clamp, 8 parts of a material disc set and 9 parts of a motor-driven wire take-up wheel.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model provides a novel photovoltaic solder strip preparation device, the structure is shown in fig. 1, including operation panel 1, operation panel 1 is fixed with fixed plate 2, 1 one end of operation panel is provided with material dish group 8, the 1 other end of operation panel is provided with motor drive and receives wire wheel 9, motor drive receives wire wheel 9 electric connection has the motor, it is the wire drawing direction to receive the direction of wire wheel 9 by material dish group 8 to motor drive, operation panel 1 has set gradually tensioning fixture 5 along the wire drawing direction, shaping fixture 6 and closed fixture 7, it has set gradually indent fixture 3 and fixed fixture 4 along the wire drawing direction between tensioning fixture 5 and the shaping fixture 6, indent fixture 3 and fixed fixture 4 are installed on operation panel 1, tensioning fixture 5, indent fixture 3, fixed fixture 4, shaping fixture 6 and closed fixture 7 collineatly place.
The material disc group 8 comprises a copper wire alloy disc and a brazing filler metal alloy disc, the copper wire alloy disc and the brazing filler metal alloy disc are located on the same vertical plane and are arranged in a staggered mode, and the copper wire alloy disc and the brazing filler metal alloy disc are matched to feed wires to the operating table 1.
As shown in fig. 2, 3 and 4, the groove pressing fixture 3 comprises a groove pressing U-shaped frame 3-2, the end parts of two arms of the groove pressing U-shaped frame 3-2 are fixedly connected with an operation table 1, the outer wall of one arm of the groove pressing U-shaped frame 3-2 is connected with a fixing plate 2, the middle part of the groove pressing U-shaped frame 3-2 is provided with an upper roller pressing rotating shaft 3-4, a rotating shaft is arranged between the two arms of the groove pressing U-shaped frame 3-2, the rotating shaft is sleeved with a lower roller 3-3, the teeth of the lower roller 3-3 are provided with a U-shaped groove, and the side wall of the groove pressing U-shaped frame 3-2 close to one side of the fixing fixture 4 is fixedly connected with an upper roller component 3-1.
The upper roller assembly 3-1 comprises a rotating shaft U-shaped frame 3-1-1, the side wall of one side, close to the fixing clamp 4, of the groove pressing U-shaped frame is fixedly connected with the rotating shaft U-shaped frame 3-1-1, the inner side of the rotating shaft U-shaped frame 3-1-1 is connected with a roller U-shaped frame 3-1-2, the side face of the roller U-shaped frame 3-1-2 is L-shaped, rotating shafts are arranged at two ends of the roller U-shaped frame 3-1-2, one end of the roller U-shaped frame 3-1-2 is movably connected with the rotating shaft U-shaped frame 3-1-1 through the rotating shafts, an upper roller 3-1-3 is sleeved on the rotating shaft at the other end of the roller U-shaped frame 3-1-2, gear teeth of the upper roller 3-1-3 are convex arc surfaces, grooves are formed in the gear teeth, and the upper roller is embedded in the U-shaped grooves of the lower roller 3-3.
As shown in fig. 5 and 6, the fixing clamp 4 includes a lower roller 4-1 and an upper roller 4-2, a U-shaped groove is formed on a gear tooth of the lower roller 4-1, a gear tooth of the upper roller 4-2 is a convex arc surface, a groove is formed on the gear tooth, the upper roller 4-2 is embedded in the U-shaped groove of the gear tooth of the lower roller 4-1, and the lower roller 4-1 and the upper roller 4-2 are movably connected with the fixing plate 2 through a bearing.
The invention discloses a novel photovoltaic solder strip preparation device, which comprises the following working processes:
the novel photovoltaic welding strip is characterized in that a brazing alloy strip and a copper wire are fixed to a copper wire alloy disc and a brazing alloy disc and then are pretreated, the copper wire and the brazing alloy strip are fixed to the initial end of the wire drawing direction by the copper wire alloy disc and the brazing alloy disc, the brazing alloy strip wrapping the copper wire after being sharpened sequentially passes through a tensioning fixture 5, a groove pressing fixture 3, a fixing fixture 4, a forming fixture 6 and a closing fixture 7 and then passes through a reducing device, the brazing alloy strip is fixed to a motor-driven wire take-up wheel 9, a motor is started, the motor-driven wire take-up wheel 9 starts to rotate for wire drawing, and the motor-driven wire take-up wheel 9 is collected to obtain the novel photovoltaic welding strip.
The utility model provides a novel photovoltaic solder strip preparation device, its advantage lies in: the invention replaces a special fixing clamp and a special groove pressing clamp on the basis of widely applied flux-cored wire drawing equipment, so that a copper wire can be accurately fixed at the central position of a brazing alloy strip, the brazing alloy strip is rolled to the shape of the U-shaped groove through the groove pressing clamp, and the copper wire is ensured to be continuously fixed at the central position of the U-shaped groove.
A preparation method of a novel photovoltaic solder strip is implemented according to the following steps:
the step 2 is implemented according to the following steps:
step 2.1, rolling the brazing alloy strip to the shape of the U-shaped groove, and wrapping the copper wire with the brazing alloy strip in the shape of the rolled U-shaped groove;
step 2.2, using a sharpening fixture to sharpen the U-shaped groove brazing alloy strip wrapped with the copper wire obtained in the step 2.1;
the tool for rolling the brazing alloy strip in the step 2.1 is specifically a groove pressing fixture 3, and the tip grinding fixture in the step 2.2 is a roller rolling device with a group of grooves of different sizes;
and 6, starting a motor, driving a wire winding wheel to start rotary wire drawing by the motor, and driving the wire winding wheel to collect to obtain the novel photovoltaic welding strip by the motor.
A preparation device adopted by a novel photovoltaic welding strip preparation method comprises an operation table 1, wherein a fixed plate 2 is fixed on the operation table 1, a material disc group 8 is arranged at one end of the operation table 1, a motor-driven wire winding wheel 9 is arranged at the other end of the operation table 1, the motor-driven wire winding wheel 9 is electrically connected with a motor, the direction from the material disc group 8 to the motor-driven wire winding wheel 9 is a wire drawing direction, a tensioning clamp 5, a forming clamp 6 and a closing clamp 7 are sequentially arranged on the operation table 1 along the wire drawing direction, a groove pressing clamp 3 and a fixing clamp 4 are sequentially arranged between the tensioning clamp 5 and the forming clamp 6 along the wire drawing direction, and the groove pressing clamp 3 and the fixing clamp 4 are installed on the operation table 1;
the material disc set 8 comprises a copper wire alloy disc and a brazing filler metal alloy disc, the copper wire alloy disc and the brazing filler metal alloy disc are positioned on the same vertical plane and are arranged in a staggered mode, and the copper wire alloy disc and the brazing filler metal alloy disc are matched to feed wires to the operating table 1;
the groove pressing fixture 3 comprises a groove pressing U-shaped frame 3-2, the end parts of two arms of the groove pressing U-shaped frame 3-2 are fixedly connected with an operation table 1, the outer wall of one arm of the groove pressing U-shaped frame 3-2 is connected with a fixing plate 2, an upper roller pressing rotating shaft 3-4 is arranged in the middle of the groove pressing U-shaped frame 3-2, a rotating shaft is arranged between the two arms of the groove pressing U-shaped frame 3-2, a lower roller 3-3 is sleeved on the rotating shaft, a U-shaped groove is formed in the gear teeth of the lower roller 3-3, and an upper roller assembly 3-1 is fixedly connected to the side wall of the groove pressing U-shaped frame 3-2, which is close to one side of the fixing fixture 4;
the upper roller assembly 3-1 comprises a rotating shaft U-shaped frame 3-1-1, the side wall of one side, close to the fixing clamp 4, of the indent U-shaped frame is fixedly connected with the rotating shaft U-shaped frame 3-1-1, the inner side of the rotating shaft U-shaped frame 3-1-1 is connected with a roller U-shaped frame 3-1-2, the roller U-shaped frame 3-1-2 is a U-shaped frame with an L-shaped side face, rotating shafts are arranged at two ends of the roller U-shaped frame 3-1-2, one end of the roller U-shaped frame 3-1-2 is movably connected with the rotating shaft U-shaped frame 3-1-1 through the rotating shafts, an upper roller 3-1-3 is sleeved on the rotating shaft at the other end of the roller U-shaped frame 3-1-2, gear teeth of the upper roller 3-1-3 are convex arc faces, grooves are formed in the gear teeth, and the upper roller is embedded in the U-shaped grooves of the lower roller 3-3;
the fixing clamp 4 comprises a lower roller 4-1 and an upper roller 4-2, the gear teeth of the lower roller 4-1 are provided with U-shaped grooves, the gear teeth of the upper roller 4-2 are convex arc surfaces, the gear teeth are provided with grooves, the upper roller 4-2 is embedded in the U-shaped grooves of the gear teeth of the lower roller 4-1, and the lower roller 4-1 and the upper roller 4-2 are movably connected with the fixing plate 2 through bearings.
And step 1, cleaning and drying the copper wire and the brazing alloy strip by arranging a cleaning device. The copper wire and the brazing alloy strip are cleaned by water and then cleaned by alcohol, so that oil stains on the surfaces of the copper wire and the brazing alloy strip and surface dirt are prevented from being brought into a subsequent manufacturing process. The cleaned brazing filler metal alloy strip is dried by a blower (drying device). The cleaning device is a spray type clear water and alcohol nozzle, and can be adjusted according to actual conditions in practical application. The drying device is a blower.
2.1, rolling the sheet-shaped brazing alloy strip to a U-shaped groove shape, wherein the purpose is to convey the brazing alloy strip wrapped with the copper wire into a device of a subsequent process;
and 2.1, sharpening the U-shaped groove brazing alloy strip wrapped with the copper wire so as to enable the U-shaped groove brazing alloy strip wrapped with the copper wire to penetrate through a working clamp arranged on a wire drawing device.
The sharpening fixture is a roller rolling device with a group of grooves with different sizes, and the fixture is a device which is arranged in a flux-cored wire preparation device widely applied in engineering.
Copper wires are placed in grooves of the upper idler wheels 3-1-3 of the groove pressing fixture 3, and U-shaped groove-shaped brazing alloy strips are placed in U-shaped grooves of the lower idler wheels 3-3 of the groove pressing fixture 3, so that the copper wires and the brazing alloy strips enter the fixing fixture under the traction of a transmission device; the slotting of the wheel teeth of the idler wheel on the fixing clamp is the same as the slotting of the idler wheel on the upper part of the groove pressing clamp, and the shapes of the wheel teeth are different; the lower roller of the fixing clamp is the same as the lower roller of the groove pressing clamp, the copper wire is placed at the same position as the brazing alloy strip, and the copper wire is fixed in the center of the brazing alloy strip through the arranged fixing clamp 4 and conveyed to the forming clamp. So that the copper wire and the brazing alloy strip enter the fixed fixture under the traction of the transmission device.
The forming fixture forms the brazing alloy strip, and the brazing alloy strip is rolled into a uniform closed solid cylinder by using the upper and lower rollers. Compared with the traditional solder strip, the shading area of the photovoltaic solder wire structure is far smaller than that of the solder strip, so that the photovoltaic conversion efficiency is improved.
The formed filamentous brazing alloy strip is subjected to reducing operation by the reducing die, the brazing alloy strip is drawn into a welding wire with the required diameter by the die arranged in the reducing device, the reducing die is made of aluminum magnesium alloy, and the alloy has the characteristics of good corrosion resistance, high strength and the like, so that the precision of the die is improved, and the precision of the photovoltaic welding wire is guaranteed;
the motor drives the wire take-up wheel 9 to perform package finishing on the reduced filamentous solder alloy strip.
Example 1
the step 2 is implemented according to the following steps:
step 2.1, rolling the brazing alloy strip to the shape of the U-shaped groove, and wrapping the copper wire with the brazing alloy strip in the shape of the rolled U-shaped groove;
step 2.2, using a sharpening fixture to sharpen the U-shaped groove brazing alloy strip wrapped with the copper wire obtained in the step 2.1;
the tool for rolling the brazing alloy strip in the step 2.1 is specifically a groove pressing fixture 3, and the tip grinding fixture in the step 2.2 is a roller rolling device with a group of grooves of different sizes;
and 6, starting a motor, driving a wire winding wheel to start rotary wire drawing by the motor, and driving the wire winding wheel to collect to obtain the novel photovoltaic welding strip by the motor.
Compared with the performance of the traditional Sn-Pb-based photovoltaic solder strip, the tensile strength of the welding joint of the Sn-Pb-based photovoltaic solder strip prepared by the traditional hot dipping method on the copper plate is 45Mpa, and the tensile strength of the welding joint of the Sn-Pb-based photovoltaic solder strip prepared by the invention on the copper plate can reach 50 Mpa. The tensile strength of the photovoltaic solder strip prepared by the method is superior to that of the photovoltaic solder strip prepared by the traditional method.
Claims (8)
1. The utility model provides a novel photovoltaic solder strip preparation device, including operation panel (1), operation panel (1) is fixed with fixed plate (2), and operation panel (1) one end is provided with material dish group (8), and operation panel (1) other end is provided with motor drive and receives wire wheel (9), and motor drive receives wire wheel (9) electric connection has the motor, and the direction of receiving wire wheel (9) by material dish group (8) to motor drive is the wire drawing direction, and operation panel (1) has set gradually tensioning fixture (5), shaping fixture (6) and closed fixture (7) along the wire drawing direction, a serial communication port, indent fixture (3) and fixed fixture (4) have set gradually along the wire drawing direction between tensioning fixture (5) and shaping fixture (6), install on operation panel (1) indent fixture (3) and fixed fixture (4), tensioning fixture (5), The groove pressing clamp (3), the fixing clamp (4), the forming clamp (6) and the closing clamp (7) are placed in a collinear way;
the material disc set (8) comprises a copper wire alloy disc and a brazing filler metal alloy disc, the copper wire alloy disc and the brazing filler metal alloy disc are located on the same vertical plane and are arranged in a staggered mode, and the copper wire alloy disc and the brazing filler metal alloy disc are matched to feed wires to the operating table (1).
2. The novel photovoltaic solder strip preparation device according to claim 1, characterized in that the notching fixture (3) comprises a notching U-shaped frame (3-2), the end parts of two arms of the notching U-shaped frame (3-2) are fixedly connected with an operation table (1), the outer wall of one arm of the notching U-shaped frame (3-2) is connected with a fixing plate (2), the middle part of the notching U-shaped frame (3-2) is provided with an upper roller pressing rotating shaft (3-4), a rotating shaft is arranged between the two arms of the notching U-shaped frame (3-2), the rotating shaft is sleeved with a lower roller (3-3), the teeth of the lower roller (3-3) are provided with a U-shaped groove, and the side wall of the notching U-shaped frame (3-2) close to the fixing fixture (4) is fixedly connected with an upper roller assembly (3-1).
3. The novel photovoltaic solder strip preparation device according to claim 2, wherein the upper roller assembly (3-1) comprises a rotating shaft U-shaped frame (3-1-1), the side wall of the indent U-shaped frame close to one side of the fixing fixture (4) is fixedly connected with the rotating shaft U-shaped frame (3-1-1), the inner side of the rotating shaft U-shaped frame (3-1-1) is connected with a roller U-shaped frame (3-1-2), the roller U-shaped frame (3-1-2) is a U-shaped frame with an L-shaped side surface, rotating shafts are arranged at two ends of the roller U-shaped frame (3-1-2), one end of the roller U-shaped frame (3-1-2) is movably connected with the rotating shaft U-shaped frame (3-1-1) through the rotating shafts, an upper roller (3-1-3) is sleeved on the rotating shaft at the other end of the roller U-shaped frame (3-1-2), the gear teeth of the upper roller (3-1-3) are convex arc surfaces, grooves are formed in the gear teeth, and the upper roller is embedded in the U-shaped grooves in the side wall of the lower roller (3-3).
4. The novel photovoltaic solder strip preparation device according to claim 1, characterized in that the fixing clamp (4) comprises a lower roller (4-1) and an upper roller (4-2), the teeth of the lower roller (4-1) are provided with U-shaped grooves, the teeth of the upper roller (4-2) are convex arc surfaces, the teeth of the upper roller are provided with grooves, the upper roller (4-2) is embedded in the U-shaped grooves of the teeth of the lower roller (4-1), and the lower roller (4-1) and the upper roller (4-2) are movably connected with the fixing plate (2) through bearings.
5. The preparation method of the novel photovoltaic solder strip is characterized by comprising the following steps:
step 1, cleaning and drying a copper wire and a brazing alloy strip through a cleaning device, wherein the cleaning device is a spray type clear water and alcohol nozzle;
step 2, fixing the brazing alloy strip and the copper wire obtained in the step 1 to a copper wire alloy disc and a brazing alloy disc, and then carrying out pretreatment to obtain a rolling tip end of the brazing alloy strip;
step 3, fixing the copper wire and the brazing filler metal alloy strip at the initial end in the wire drawing direction by the copper wire alloy disc and the brazing filler metal alloy disc;
step 4, sequentially penetrating the rolling tip end of the brazing alloy strip obtained in the step 2 through a tensioning clamp (5), a groove pressing clamp (3), a fixing clamp (4), a forming clamp (6) and a closing clamp (7) to obtain the head end of the photovoltaic welding strip;
step 5, the head end of the photovoltaic solder strip obtained in the step 4 passes through a reducing device and is fixed to a motor-driven wire take-up pulley (9);
and 6, starting a motor, wherein the motor drives the wire winding wheel (9) to start rotating wire drawing, and the motor drives the wire winding wheel (9) to collect to obtain the novel photovoltaic solder strip.
6. The novel photovoltaic solder strip preparation method according to claim 5, characterized in that the preparation device adopted by the novel photovoltaic solder strip preparation method comprises an operation table (1), a fixed plate (2) is fixed on the operation table (1), a material disc set (8) is arranged at one end of the operation table (1), a motor-driven wire take-up wheel (9) is arranged at the other end of the operation table (1), the motor-driven wire take-up wheel (9) is electrically connected with a motor, the direction from the material disc set (8) to the motor-driven wire take-up wheel (9) is a wire drawing direction, a tensioning clamp (5), a forming clamp (6) and a closing clamp (7) are sequentially arranged on the operation table (1) along the wire drawing direction, a groove pressing clamp (3) and a fixing clamp (4) are sequentially arranged between the tensioning clamp (5) and the forming clamp (6) along the wire drawing direction, the groove pressing clamp (3) and the fixing clamp (4) are installed on the operation table (1), the tensioning clamp (5), the groove pressing clamp (3), the fixing clamp (4), the forming clamp (6) and the closing clamp (7) are placed in a collinear manner;
the material disc set (8) comprises a copper wire alloy disc and a brazing filler metal alloy disc, the copper wire alloy disc and the brazing filler metal alloy disc are positioned on the same vertical plane and are arranged in a staggered mode, and the copper wire alloy disc and the brazing filler metal alloy disc are matched to feed wires to the operating table (1);
the groove pressing fixture (3) comprises a groove pressing U-shaped frame (3-2), the end parts of two arms of the groove pressing U-shaped frame (3-2) are fixedly connected with an operation table (1), the outer wall of one arm of the groove pressing U-shaped frame (3-2) is connected with a fixing plate (2), an upper roller pressing rotating shaft (3-4) is arranged in the middle of the groove pressing U-shaped frame (3-2), a rotating shaft is arranged between the two arms of the groove pressing U-shaped frame (3-2), a lower roller (3-3) is sleeved on the rotating shaft, a U-shaped groove is formed in the gear teeth of the lower roller (3-3), and an upper roller assembly (3-1) is fixedly connected to the side wall of the groove pressing U-shaped frame (3-2) close to the fixing fixture (4);
the upper roller assembly (3-1) comprises a rotating shaft U-shaped frame (3-1-1), the side wall of one side, close to the fixing fixture (4), of the indent U-shaped frame is fixedly connected with the rotating shaft U-shaped frame (3-1-1), the inner side of the rotating shaft U-shaped frame (3-1-1) is connected with a roller U-shaped frame (3-1-2), the roller U-shaped frame (3-1-2) is an L-shaped frame with an L-shaped side surface, rotating shafts are arranged at two ends of the roller U-shaped frame (3-1-2), one end of the roller U-shaped frame (3-1-2) is movably connected with the rotating shaft U-shaped frame (3-1-1) through the rotating shafts, an upper roller (3-1-3) is sleeved on the rotating shaft at the other end of the roller U-shaped frame (3-1-2), gear teeth of the upper roller (3-1-3) are convex arc surfaces, the gear teeth are provided with grooves, and the upper roller is embedded in the U-shaped grooves of the gear teeth of the lower roller (3-3);
the fixing clamp (4) comprises a lower roller (4-1) and an upper roller (4-2), the gear teeth of the lower roller (4-1) are provided with U-shaped grooves, the gear teeth of the upper roller (4-2) are convex arc surfaces, the gear teeth are provided with grooves, the upper roller (4-2) is embedded in the U-shaped grooves of the gear teeth of the lower roller (4-1), and the lower roller (4-1) and the upper roller (4-2) are movably connected with the fixing plate (2) through bearings.
7. The preparation method of the novel photovoltaic solder strip according to claim 6, wherein the step 2 is specifically implemented according to the following steps:
step 2.1, rolling the brazing alloy strip to the shape of the U-shaped groove, and wrapping the copper wire with the brazing alloy strip in the shape of the rolled U-shaped groove;
and 2.2, sharpening the U-shaped groove brazing alloy strip wrapped with the copper wire obtained in the step 2.1 by utilizing a sharpening fixture.
8. The preparation method of the novel photovoltaic solder strip according to claim 7, characterized in that the tool for rolling the solder alloy strip in step 2.1 is a groove rolling fixture (3), and the sharpening fixture in step 2.2 is a roller rolling device with a set of grooves of different sizes.
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