CN111168276A - Method and device for producing variable-section special-shaped solder strip solar cell string - Google Patents
Method and device for producing variable-section special-shaped solder strip solar cell string Download PDFInfo
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- CN111168276A CN111168276A CN202010114535.7A CN202010114535A CN111168276A CN 111168276 A CN111168276 A CN 111168276A CN 202010114535 A CN202010114535 A CN 202010114535A CN 111168276 A CN111168276 A CN 111168276A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910000679 solder Inorganic materials 0.000 title claims description 59
- 238000003466 welding Methods 0.000 claims abstract description 135
- 230000007246 mechanism Effects 0.000 claims abstract description 123
- 238000005452 bending Methods 0.000 claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000004744 fabric Substances 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000001788 irregular Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- 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
- B23K35/40—Making wire or rods for soldering or welding
-
- 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
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
-
- 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
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
- H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
-
- 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
Abstract
The invention provides a method for producing a solar cell string with a variable-section special-shaped welding strip, which mainly aims at the solar cell string welded by the variable-section special-shaped welding strip, and a limiting mechanism is arranged on a channel for conveying the variable-section special-shaped welding strip and is used for carrying out position precision correction on the passing welding strip so as to ensure that the lengths of special-shaped sections completely covering the front surface of a cell piece are consistent. The device for implementing the method needs to add a limiting mechanism at the existing cloth belt manufacturing station, so that the special-shaped section of the variable-section special-shaped welding belt cannot pass through, when the welding belt returns under the driving of the hammer wheel, each welding belt can be clamped at the limiting mechanism, and the consistent front and back positions after cutting are ensured. The equipment required by the method mainly comprises: the device comprises a belt supply device, a belt conveying mechanism, a bending mechanism, a limiting mechanism, a belt cutting mechanism and a belt drawing mechanism.
Description
Technical Field
The invention relates to a method for producing a solar cell string, in particular to a method for producing a solar cell string with a variable-section special-shaped solder strip. The invention also relates to a special device for implementing the method.
Background
The photovoltaic solder strip is also called a tinned copper strip or a tinned copper strip, a branch bus strip and an interconnecting strip, and is applied to connection of photovoltaic module cells. The two surfaces of each solar cell are respectively and symmetrically provided with a plurality of silver interconnected electrodes (interconnected electrodes for short) which are parallel to each other, and the plurality of solar cells can be connected in series by lapping the welding strips on the interconnected electrodes of two adjacent solar cells. Specifically, the solar cell and the solder strip are respectively placed and positioned on a platform of a series welding machine, so that the solar cell and the solder strip are aligned, and then high-temperature heating welding is carried out, so that the solar cell is series-welded.
Most of the traditional solder strips are tinned copper flat strips (also called flat solder strips). However, with the development of the industry, other shapes of solder strips have appeared, also called deformed solder strips, for example, triangular solder strips are the most common type of deformed solder strips, and the cross section of the welding strips is triangular. The area of the solar cell piece covered by the welding strip can be reduced by adopting the special-shaped welding strip to weld the plurality of solar cell pieces in series, and the light receiving rate of the solar cell piece is improved.
The publication number is: CN110280585A, name: the specification of the rolling equipment discloses a special-shaped welding strip manufactured according to the characteristic of interconnection of solar cell strings, wherein a plurality of continuous periodic welding strip units are arranged on a welding strip wire, and each welding strip unit comprises a triangular section, a flat strip section and a transition section for connecting the triangular section and the flat strip section. Therefore, when interconnected with the cell, the portion of the solder ribbon disposed on the front side of the cell is triangular, while the cell interconnect segment and the portion of the solder ribbon disposed on the back side of the cell are flat. In a solar cell string welding machine for preparing a cell string, when a welding coil is in different materials, different preparation precision and the like, the triangular welding strip arranged on the front surface of a cell is inconsistent in length or large in deviation, so that the defect of preparing the cell string is caused.
Disclosure of Invention
The invention provides a method and a device for producing a solar cell string with a variable-section special-shaped solder strip, which aim to solve the problems in the prior art.
The position precision correction of the invention is to correct the length of the special-shaped section of the second solder strip to be laid on the solar cell, so as to ensure that the lengths of the special-shaped sections of a plurality of second solder strips on the same cell are consistent.
The invention provides a method for producing a variable cross-section special-shaped welding strip solar cell string, which comprises the following specific steps of:
firstly, laying a first welding strip with a first length;
sequentially placing the solar cells and second welding strips with second lengths, and connecting at least two solar cells by laying at least one second welding strip with second length until the solar cells with target lengths are connected together in series;
the variable-section special-shaped welding strip is formed by regularly and repeatedly arranging the second welding strips;
the second welding strip comprises a flat section and a special-shaped section, and a limiting mechanism is arranged on a channel for conveying the variable-section special-shaped welding strip and used for implementing position precision correction on the second welding strip with at least one second length passing through so as to ensure that the lengths of the special-shaped sections completely covering the front surface of the battery piece are consistent. The expression "at least one second solder strip with a second length is subjected to position accuracy correction" here means that in the production process of the battery string, the position accuracy correction is performed on the second solder strip when one solar cell piece and one second solder strip are laid, or the position accuracy correction can be performed on the second solder strip after the solar cell piece and the second solder strip are laid in sequence for multiple times, and the specific correction time is set according to the requirement of the production accuracy.
Further, when the variable cross-section special-shaped welding strip is corrected in position precision, the limiting mechanism only allows the flat sections to pass through, so that the special-shaped sections of the multiple parallel variable cross-section special-shaped welding strips are limited to be continuously conveyed forwards when being conveyed to the limiting mechanism.
Furthermore, after the position precision correction is carried out on the at least one second welding strip with the second length, the limiting mechanism cuts off and separates the second welding strip with the second length from the deformed welding strip with the variable cross section, and then cuts off the welding strip after the position precision correction is carried out, so that the consistency of the length of the deformed section of the second welding strip after cutting can be improved.
Further, before or after the position precision correction is carried out on the second welding strip with at least one second length passing through by the limiting mechanism, bending is carried out on the connecting sections between the battery pieces of the second welding strip, and the position precision correction can be realized by adopting a technical means of enabling the limiting mechanism to only allow the flat sections to pass through. The bending of the connection section between the battery pieces of the second welding strip belongs to the prior art, and the technical scheme provided herein aims at the overall concept of the invention: the "position accuracy correction is carried out on the at least one second length of second solder strip passed through" to give the position which can be set by the prior art bending mechanism.
The invention also provides a device for producing the variable-section special-shaped solder strip solar cell string, which is used for implementing the method and at least comprises the following steps:
the strip supply device is used for installing a strip supply roll of the variable-section special-shaped welding strip and enabling the strip supply roll to rotate when needed so as to release the variable-section special-shaped welding strip;
the counterweight wheel is arranged between the belt supply device and the belt conveying mechanism and is used for tensioning the variable-section special-shaped welding belt;
the base plate is arranged at the lowest part of the cloth belt manufacturing station, and a guide groove for the variable-section special-shaped welding belt to pass through is arranged on the base plate;
the belt conveying mechanism is used for clamping the variable-section special-shaped welding belt and conveying the welding belt to a cloth belt making station;
the bending mechanism is arranged in the transmission direction of the variable-section special-shaped welding strip and is used for bending the second welding strip at the connecting section between the battery pieces;
the cutter mechanism is used for cutting off and separating the variable-section special-shaped welding strip according to a first length or a second length;
the strip pulling mechanism is used for pulling the variable-section special-shaped welding strip to the position below the cutter mechanism, and arranging the first welding strip and the second welding strip which are cut off and separated from the variable-section special-shaped welding strip at the positions for placing the battery pieces;
further comprising: the limiting mechanism is arranged above the substrate and used for limiting the second welding strip and preventing the special-shaped section from passing through;
the bending mechanism is positioned in front of or behind the limiting mechanism;
the belt conveying mechanism is positioned behind the bending mechanism and the limiting mechanism along the conveying direction of the variable-section special-shaped welding belt;
the cutter mechanism is positioned behind or in front of the bending mechanism along the conveying direction of the variable-section special-shaped welding strip.
Further, the limiting mechanism comprises a component capable of reciprocating up and down, and when the component is located at the lower limit position, the bottom of the component and the guide groove on the substrate form a limiting channel to allow only the flat section of the variable-section special-shaped welding strip to pass through.
Further, the limiting mechanism comprises a device for adjusting the height of the limiting channel. The special-shaped welding strip with the variable cross section is suitable for the special-shaped welding strips with different thicknesses and different cross section shapes, and the limiting channel can play a role of limiting the special-shaped section to pass through no matter the bending mechanism is arranged in front of or behind the limiting mechanism.
Further, the limiting mechanism comprises a device for driving the up-and-down reciprocating component.
Further, the apparatus for driving the up-and-down reciprocating member includes: a compressed air path arranged at the upper end of the component and a return spring sleeved at the lower end of the component; or a spring sleeved at the upper end of the component and a compressed air path arranged at the lower end of the component; or compressed air passages arranged at the upper and lower ends of the component; or a crank-link mechanism which drives the component to reciprocate up and down; or the driving part reciprocates up and down
Furthermore, the contact part of the up-and-down reciprocating component and the welding strip is provided with a wedge-shaped end part, and the inclination of the wedge-shaped end part is adapted to the inclination of the bent connection section between the battery pieces.
The invention has the technical effects that: the belt supply mechanism provides a variable-section special-shaped welding belt to be cut into sections, the belt conveying mechanism conveys the welding belt to a belt making station of the cloth belt, the belt drawing mechanism pulls out a section of the special-shaped welding belt according to the length of the required welding belt, and the limiting mechanism corrects the position precision of the special-shaped welding belt;
when in correction, the part which does up-and-down reciprocating motion by the limiting mechanism moves to the lower position, the bottom of the part forms a limiting channel with the guide groove on the substrate when the part is positioned at the lower position, only the flat section of the variable-section special-shaped welding strip is allowed to pass through, therefore, when the heavy hammer wheel drives the welding strip to retreat, the starting end of the special-shaped section of the welding strip is clamped at the position of the limiting channel, so that each second welding strip on the same battery piece realizes the position correction of the special-shaped section length of the second welding strip by taking the 'final contact point with the limiting mechanism along the transmission direction' as a reference point, the cross-sectional shape of each second solder strip at the corrected reference point is the same, the corrected second solder strips are cut off, the lengths of the special-shaped sections are consistent, the positions of the special-shaped sections on the plurality of solder strips transmitted to the welding machine are corrected to be flush with each other, therefore, the positions of the special-shaped sections of the second welding strips on the same battery piece in the welded battery string are flush.
Drawings
FIG. 1 is a front view of a variable cross-section profiled weld bead in an embodiment;
FIG. 2 is a sectional view of a special-shaped section on the variable-section special-shaped welding strip in the embodiment;
FIG. 3 is a cross-sectional view of a flat section of a variable cross-section profiled weld ribbon of an embodiment;
FIG. 4 is a front view showing a positional relationship between the variable cross-section special-shaped welding strip and the limiting mechanism in the embodiment;
FIG. 5 is a front view of the embodiment in which a variable cross-section special-shaped welding strip is welded with a battery plate in a string;
FIG. 6 is a front view showing a positional relationship between the stopper mechanism and the substrate in the embodiment;
FIG. 7 is a sectional view showing a positional relationship between the stopper mechanism and the substrate in the embodiment;
FIG. 8 is a schematic view of a second embodiment of the up-and-down reciprocating part in the example;
FIG. 9 is a schematic view of a third embodiment of the up-and-down reciprocating member in the example;
FIG. 10 is a schematic view of a fourth embodiment of the up-and-down reciprocating member of the example;
FIG. 11 is a schematic view of a fifth embodiment of an up-and-down reciprocating part of the example;
FIG. 12 is a sectional view showing the internal structure of the stopper mechanism in the embodiment;
FIG. 13 is a partial enlarged view showing the positional relationship between the member reciprocating up and down and the solder ribbon in the embodiment;
FIG. 14 is a schematic diagram of a first embodiment of the apparatus for producing a variable cross-section special-shaped solder strip solar cell string (1) in the first example;
FIG. 15 is a schematic view of a second embodiment of the apparatus for producing a variable cross-section special-shaped solder strip solar cell string (1) in example II;
fig. 16 is a schematic diagram of a third implementation mode of the device for producing the variable-section special-shaped solder strip solar cell string (1) in the third embodiment.
In the figure, 1, a battery string, 40, a base plate, 50, a tape supply device, 51, a weight wheel, 61, a tape feeding mechanism, 62, a limiting mechanism, 63, a bending mechanism, 64, a tape cutting mechanism, 65, a tape drawing mechanism, 100, a special-shaped welding tape, 100-1, a special-shaped section, 100-2, a flat section, 100-3, a battery piece connecting section, 200, a battery piece, 200-1, a battery piece front surface, 200-2, a battery piece back surface, 621, a limiting cylinder cover, 622, a limiting cylinder body, 623, a sealing ring, 624, a spring, 625, an up-and-down reciprocating component, 6251 and a wedge-shaped end part are arranged.
Detailed Description
The following describes a specific embodiment of the present invention with reference to fig. 1 to 15.
The first embodiment is as follows:
fig. 1 to 3 illustrate the composition structure of a variable cross-section special-shaped welding strip 100, which comprises a special-shaped section 100-1, a flat section 100-2 and a connection section 100-3 between battery plates;
wherein the cross section of the shaped section 100-1 can be triangular, circular, etc., and the height of the cross section is different from that of the flat section 100-3.
In this embodiment, the section of the special-shaped section 100-1 is triangular, the height of the section is K, the height of the section of the flat section 100-2 is S, and K is greater than S.
Fig. 4 illustrates the position relationship between the variable cross-section special-shaped welding strip 100 and the limiting mechanism 62 during the precision correction, wherein the limiting mechanism 62 is arranged at the inter-cell connecting section 100-3 of the welding strip to perform the position precision correction on the welding strip.
Fig. 5 illustrates a schematic diagram of welding the corrected special-shaped welding strip and the battery plate into a string. The length of the first solder strip of the solar cell string 1 is L1, and the length of the second solder strip is L2;
the first welding strip is welded on the back surface 200-2 of the first battery piece;
the special-shaped section 100-1 of the second welding strip is welded on the front surface 200-1 of the cell, the flat section 100-2 of the second welding strip is welded on the back surface 200-1 of the other cell, at least one second welding strip is connected with at least two solar cells 200, and the like, and a plurality of cells are welded into a string.
Fig. 6 illustrates the positional relationship between the limiting mechanism 62 and the substrate 40, the limiting mechanism 62 is disposed above the substrate 40, a member 625 capable of reciprocating up and down is disposed on the limiting mechanism 62, and the member 625 forms a limiting channel with the solder ribbon guide groove on the substrate 40;
when the component 625 is in an upper position, the limiting channel allows the whole variable cross-section special-shaped welding strip 100 to pass through; when the member 625 is in the down position, the curb channels allow passage of only the flattened section 100-2 of the variable cross-section profiled weld strip 100.
Fig. 7 illustrates a first embodiment of a spacing mechanism 62.
The limiting mechanism 62 comprises means for driving said member 625, preferably designed in the form of a single-acting cylinder, which reciprocates the member 625 up and down by means of a spring 624 and compressed air.
The components are arranged in a piston hole on a limiting cylinder body 622, a limiting cylinder cover 621 is arranged at the upper part of the limiting cylinder body 622, and an air passage communicated with compressed air is arranged on the limiting cylinder cover 621 corresponding to the top of each component 625; by providing different air paths, each component 625 can be reciprocated up and down individually, or all components 625 can be reciprocated up and down simultaneously.
A sealing ring 623 is arranged between the limiting cylinder body 622 and the limiting cylinder cover 621 to prevent air leakage on a mounting surface and enable the pressure of compressed air to be completely acted on a component 625; the spring 624 is sleeved on the component 625, the upper end of the spring 624 is in contact with the component 625, and the lower end of the spring 624 is in contact with a step in the piston hole; when compressed air is not introduced into the air passage of the limiting cylinder head 621, the component 625 is kept at the upper position, and when compressed air is introduced into the air passage of the limiting cylinder head 621, the component 625 moves to the lower position. The maximum spring force of the spring 624 should therefore be less than the pressure of the compressed air acting on the component 625, while the minimum spring force of the spring 624 should be greater than the sum of the friction between the component 625 and the piston bore and the self-weight of the component 625.
Fig. 8 to 10 illustrate three other embodiments of the device for reciprocating the driving member 625 of the limiting mechanism up and down. The method mainly comprises the following steps: a double-acting cylinder mechanism, a crank connecting rod guide rail mechanism and a lead screw guide rail mechanism. The above three driving mechanisms can replace the device capable of driving the component 625 to reciprocate up and down in the above preferred embodiment.
Fig. 11 illustrates a fifth embodiment of the apparatus for reciprocating the driving member 625 of the limiting mechanism up and down, which is different from the first embodiment in that: the spring 624 is disposed above the member 625 and the air passage is disposed at the protruding end of the member 625. When no compressed air is introduced into the stop mechanism 62, the member 625 is always in the down position.
Fig. 12 shows the internal structure of the limiting mechanism 62, and fig. 13 shows the positional relationship of the member 625 reciprocating up and down with the solder ribbon in the lower position, wherein the contact portion of the member 625 with the solder ribbon has a wedge-shaped end 6251 with a slope corresponding to the slope of the starting end of the profile section 100-1.
When the component 625 is in the lower position, the pulling mechanism 63 releases the clamped welding strip, and the starting end of the special-shaped section 100-1 is clamped at a limiting channel formed by the component 625 and the welding strip guide groove on the base plate 40 under the tensioning action of the weight wheel 51.
Fig. 14 shows a layout of a first embodiment of an apparatus for producing a variable cross-section profile solder ribbon solar cell string 1.
The variable cross-section special-shaped welding strip 100 extends out of a welding strip coil on the strip supply mechanism 50, bypasses the weight wheel 51, penetrates into the strip conveying mechanism 61, and is sequentially provided with a bending mechanism 63, a limiting mechanism 62, a strip cutting mechanism 64 and a strip pulling mechanism 65 at the front end of the strip conveying mechanism 61 along the welding strip conveying direction, wherein the strip pulling mechanism 65 can reciprocate in front of the strip cutting mechanism 64 and the strip cutting mechanism.
The positions of the mechanisms are arranged according to the schematic diagram, and the solar cell string 1 with the variable cross-section special-shaped solder strips can be produced by adopting the following method:
firstly, laying a first welding strip with a first length L1;
sequentially placing the solar cell slices 200 and second solder strips with a second length L2, and connecting at least two solar cell slices 200 by laying at least one second solder strip with a second length L2 until solar cell strings with target lengths are connected together;
the variable cross-section special-shaped welding strip 100 is formed by regularly and repeatedly arranging the second welding strips;
the second welding strip comprises a flat section 100-2 and a special-shaped section 100-1, and a limiting mechanism 62 is arranged on a channel for conveying the variable cross-section special-shaped welding strip 100 and is used for carrying out position precision correction on at least one second welding strip with a second length L2 so as to ensure that the special-shaped section 100-1 completely covering the front surface 200-1 of the battery piece is consistent in length.
The working principle is as follows: when the variable cross-section special-shaped welding strip 100 is used for producing a solar cell string, the special-shaped section 100-1 of the welding strip needs to be welded on the front surface 200-1 of a cell piece, and the flat section 100-2 of the welding strip needs to be welded on the back surface 200-2 of the cell piece. In order to obtain a plurality of second welding strips with the same special-shaped section length and the flush end parts before welding the battery string 1, a limiting mechanism 62 is required to be added at a cloth strip making station of the stringer. A component 625 capable of reciprocating up and down is arranged on the limiting mechanism 62, the component 625 and a guide groove on the substrate 40 at the tape making station form a limiting channel, and when the component 625 is positioned at the upper position, the limiting channel allows the whole variable-section special-shaped welding tape 100 to pass through; when the member 625 is in the down position, the curb channels allow passage of only the flattened section 100-2 of the variable cross-section profiled weld strip 100. When the tape is manufactured every time, the tape drawing mechanism 65 draws the variable cross-section special-shaped welding tape 100 out of the limiting channel, the special-shaped section 100-2 is located at the front end of the limiting mechanism, when precision correction is needed, the component 625 moves to the lower position, the tape drawing mechanism 65 releases the drawn welding tape, and the welding tape can withdraw from the rear part of the limiting mechanism 62 along the guide groove under the action of the heavy hammer wheel 51 due to the loss of traction of the tape drawing mechanism 65;
at the moment, the limiting channel moves downwards due to the component 625, the special-shaped section 100-1 of the welding strip cannot exit from the limiting channel, and all the welding strips are clamped at the limiting channel by taking the final contact point with the limiting mechanism along the transmission direction as a reference, so that the welding strip with a neat front position and a neat rear position is obtained; the corrected welding strip continues to complete the work of the strip-making cloth belt under the common coordination of the strip pulling mechanism, the cutter mechanism, the bending mechanism and the belt conveying mechanism.
Example two
Fig. 15 illustrates a layout of a second embodiment of an apparatus for producing a variable cross-section deformed solder ribbon solar cell string 1;
the difference from the first embodiment is that: along the direction of solder strip transmission, the front end of the strip feeding mechanism 61 is sequentially provided with a limiting mechanism 62, a bending mechanism 63, a strip cutting mechanism 64 and a strip pulling mechanism 65.
EXAMPLE III
Fig. 16 illustrates a layout of a third embodiment of an apparatus for producing a variable cross-section deformed solder ribbon solar cell string 1;
the difference from the first embodiment is that: along the direction of solder strip transmission, the front end of the strip-feeding mechanism 61 is sequentially provided with a limiting mechanism 62, a cutter mechanism 64, a bending mechanism 63 and a strip-pulling mechanism 65.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not make the essence of the corresponding technical solution devulcanize the scope of the technical solution of the embodiments of the present invention.
Claims (10)
1. A method of producing a solar cell string (1) of variable cross-section profiled solder ribbons (100), comprising the steps of:
first laying a first solder strip of a first length (L1);
sequentially placing the solar cell slices (200) and second welding strips with a second length (L2), and connecting at least two solar cell slices (200) by laying at least one second welding strip with a second length (L2) until solar cell strings with target lengths are connected together;
the variable-section special-shaped welding strip (100) is formed by regularly and repeatedly arranging the second welding strips;
the welding device is characterized in that the second welding strip comprises a flat section (100-2) and an irregular section (100-1), a limiting mechanism (62) is arranged on a channel for conveying the variable-section irregular welding strip (100) and used for carrying out position precision correction on the second welding strip with at least one second length (L2) to ensure that the irregular section (100-1) completely covering the front surface (200-1) of the battery piece is consistent in length.
2. The method according to claim 1, characterized in that the limiting mechanism (62) only allows the passage of the flat section (100-2) when the position accuracy correction is performed on the variable cross-section profiled welding strip (100).
3. The method according to claim 1 or 2, characterized in that the limiting mechanism (62) is adapted to perform a position accuracy correction of the passing second solder ribbon of at least one second length (L2) and to cut off the second solder ribbon of said second length from the modified-section profiled solder ribbon (100).
4. The method according to claim 1 or 2, characterized in that the limiting mechanism (62) bends the inter-cell connecting sections (100-3) of the second solder strip before or after the correction of the positional accuracy of the second solder strip of at least one second length (L2) passing therethrough.
5. An apparatus for producing a string (1) of variable cross-section profiled solder ribbon solar cells, the apparatus being adapted to perform the method of any of claims 1 to 4, the arrangement comprising:
the tape supply device (50) is used for installing a tape supply roll of the variable-section special-shaped welding tape (100) and enabling the tape supply roll to rotate when needed so as to release the variable-section special-shaped welding tape (100);
the weight wheel (51) is arranged between the belt supply device (50) and the belt conveying mechanism (61) and is used for tensioning the variable-section special-shaped welding belt (100);
a base plate (40) arranged at the lowest part of the cloth belt manufacturing station, wherein a guide groove for the variable cross-section special-shaped welding belt (100) to pass through is arranged on the base plate;
the belt conveying mechanism (61) is used for clamping the variable-section special-shaped welding belt (100) and conveying the welding belt to a cloth belt making station;
the bending mechanism (63) is arranged in the transmission direction of the variable-section special-shaped welding strip (100) and is used for bending the second welding strip at the connection section (100-3) between the battery pieces;
the cutter mechanism (64) is used for cutting and separating the variable-section special-shaped welding strip (100) according to a first length (L1) or a second length (L2);
the drawing mechanism (65) is used for drawing the variable cross-section special-shaped welding strip (100) below the cutter mechanism (64) and arranging a first welding strip and a second welding strip which are cut and separated from the variable cross-section special-shaped welding strip (100) at positions where the battery pieces (200) are placed;
it is characterized by also comprising: the limiting mechanism (62) is arranged above the substrate (40) and used for limiting the second welding strip and preventing the special-shaped section (100-1) from passing through;
the bending mechanism (63) is positioned in front of or behind the limiting mechanism (62);
the belt conveying mechanism (61) is positioned behind the bending mechanism (63) and the limiting mechanism (62) along the conveying direction of the variable-section special-shaped welding belt (100);
the cutter mechanism (64) is positioned behind or in front of the bending mechanism (63) along the conveying direction of the variable-section special-shaped welding strip (100).
6. The apparatus for producing a variable cross-section special-shaped solder strip solar cell string (1) according to claim 5, wherein the limiting mechanism (62) comprises a component (625) capable of reciprocating up and down, and the bottom of the component (625) forms a limiting channel with a guide groove on the substrate (40) when the component (625) is positioned at a lower limit, and only the flat section (100-2) of the variable cross-section special-shaped solder strip (100) is allowed to pass through.
7. The apparatus for producing a variable cross-section profiled solder ribbon solar cell string (1) according to claim 6, characterized in that the limiting mechanism (62) comprises means for adjusting the height of the limiting channel.
8. The apparatus for producing a variable cross-section profiled solder ribbon solar cell string (1) according to claim 6 or 7, characterized in that the limiting mechanism (62) comprises means for driving the up-and-down reciprocating part.
9. The apparatus for producing a variable cross-section profiled solder ribbon solar cell string (1) according to claim 8, wherein the means for driving the up-and-down reciprocating member comprises: a compressed air path arranged at the upper end of the component (625) and a return spring (624) sleeved at the lower end of the component (625); or a spring (624) sleeved at the upper end of the component (625) and a compressed air path arranged at the lower end of the component (625); or compressed air gas circuits arranged at the upper end and the lower end of the component (625); or a crank link mechanism which drives the component (625) to reciprocate up and down; or a guide screw mechanism in which the driving member (625) reciprocates up and down.
10. The apparatus for producing a variable cross-section profiled solder ribbon solar cell string (1) according to claim 5, wherein the up-and-down reciprocating member (625) and the solder ribbon contact portion have wedge-shaped ends (6251) with a slope adapted to the slope of the bent inter-cell-sheet connection sections (100-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010114535.7A CN111168276A (en) | 2020-02-25 | 2020-02-25 | Method and device for producing variable-section special-shaped solder strip solar cell string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010114535.7A CN111168276A (en) | 2020-02-25 | 2020-02-25 | Method and device for producing variable-section special-shaped solder strip solar cell string |
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| Publication Number | Publication Date |
|---|---|
| CN111168276A true CN111168276A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010114535.7A Pending CN111168276A (en) | 2020-02-25 | 2020-02-25 | Method and device for producing variable-section special-shaped solder strip solar cell string |
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| CN (1) | CN111168276A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271236A (en) * | 2020-10-23 | 2021-01-26 | 无锡先导智能装备股份有限公司 | Battery string continuous preparation mode and battery string preparation equipment |
| CN112349810A (en) * | 2020-10-23 | 2021-02-09 | 无锡先导智能装备股份有限公司 | Welding strip feeding mode, battery string preparation mode and welding strip feeding device |
| CN114309813A (en) * | 2021-12-27 | 2022-04-12 | 江苏小牛自动化设备有限公司 | Welding strip splitting device, system and method |
| CN114678443A (en) * | 2020-12-24 | 2022-06-28 | 苏州阿特斯阳光电力科技有限公司 | Production method and production device of solar cell string |
-
2020
- 2020-02-25 CN CN202010114535.7A patent/CN111168276A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271236A (en) * | 2020-10-23 | 2021-01-26 | 无锡先导智能装备股份有限公司 | Battery string continuous preparation mode and battery string preparation equipment |
| CN112349810A (en) * | 2020-10-23 | 2021-02-09 | 无锡先导智能装备股份有限公司 | Welding strip feeding mode, battery string preparation mode and welding strip feeding device |
| CN114678443A (en) * | 2020-12-24 | 2022-06-28 | 苏州阿特斯阳光电力科技有限公司 | Production method and production device of solar cell string |
| CN114309813A (en) * | 2021-12-27 | 2022-04-12 | 江苏小牛自动化设备有限公司 | Welding strip splitting device, system and method |
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Address after: 750011 No.6, baohu West Road, Jinfeng Industrial Park, Yinchuan City, Ningxia Hui Autonomous Region Applicant after: Ningxia Xiaoniu Automation Equipment Co.,Ltd. Applicant after: Jiangsu Xiaoniu automation equipment Co.,Ltd. Address before: 750011 No.6, baohu West Road, Jinfeng Industrial Park, Yinchuan City, Ningxia Hui Autonomous Region Applicant before: NINGXIA XN AUTOMATION EQUIPMENT Co.,Ltd. Applicant before: Jiangsu Xiaoniu automation equipment Co.,Ltd. |