CN113299799A - Method and apparatus for producing solar cell string - Google Patents
Method and apparatus for producing solar cell string Download PDFInfo
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- CN113299799A CN113299799A CN202110751834.6A CN202110751834A CN113299799A CN 113299799 A CN113299799 A CN 113299799A CN 202110751834 A CN202110751834 A CN 202110751834A CN 113299799 A CN113299799 A CN 113299799A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910000679 solder Inorganic materials 0.000 claims abstract description 152
- 238000003466 welding Methods 0.000 claims abstract description 124
- 238000012546 transfer Methods 0.000 claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 claims abstract description 43
- 238000005520 cutting process Methods 0.000 claims abstract description 23
- 238000002360 preparation method Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims description 134
- 238000004804 winding Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 9
- 238000005476 soldering Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 23
- 238000010586 diagram Methods 0.000 description 4
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- 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
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
-
- 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 discloses a method and equipment for producing solar cell strings, wherein the method comprises the following steps: s1: arranging m battery pieces along the X direction; s2: cutting n original welding strips extending along the X direction and dividing the original welding strips into m groups of welding strip groups; s3: moving the m groups of solder ribbon groups away from each other and rotating them respectively; s4: placing m groups of welding strips extending along the Y direction on a transfer station; s5: respectively arranging m groups of welding strip groups extending along the Y direction above the m battery pieces; s6: respectively arranging the m battery pieces above the m groups of welding strip groups to form m groups of battery strings to be welded; s7: and welding the welding strips in the m groups of battery strings with the battery sheets at the corresponding positions. The equipment using the method comprises a welding strip preparation device, a battery piece supply device, a transfer station, an arrangement station, a welding station and a plurality of groups of transmission devices. The equipment provided by the invention has a simple structure, is convenient to use and maintain, greatly reduces the equipment cost and the occupied area, and improves the production efficiency.
Description
Technical Field
The invention relates to the technical field of automatic manufacturing equipment, in particular to a method and equipment for producing a solar cell string.
Background
With the rising of energy prices, the development and utilization of new energy is a major subject of research in the energy field today. Because solar energy has the advantages of no pollution, no regional limitation, inexhaustible energy and the like, the research on solar power generation becomes a main direction for developing and utilizing new energy. The generation of electricity by solar modules is a main mode of using solar energy by people at present, wherein solar cells are the main components of the solar modules.
In order to increase the output power of the solar cells, it is a common practice to connect a plurality of solar cells in series. Referring to fig. 1 to 3, in the prior art, a series connection method of solar cells is as follows: the welding strip feeding mechanism can provide a group of welding strips 211 which are parallel to each other, a plurality of grid strips 11 which are parallel to each other are arranged on the front surface and the back surface of each battery piece 1, the front surface of one battery piece 1 is connected with the back surface of the adjacent battery piece 1 through the group of welding strips 211, each welding strip 211 is attached to and welded with the grid strips 11 at the corresponding positions of the two battery pieces 1, the welding strips 211 and the battery pieces 1 are continuously and alternately placed by automatic equipment and are transmitted and welded to form a battery string 10 which is connected with each other, wherein the length extending direction of the welding strips 211, the length extending direction of the grid strips 11 and the extending direction of the battery string 10 are parallel to each other. Further, the set of solder strips 211 located below the first cell piece 1 can constitute the positive electrode 20a of the battery string 10, and the set of solder strips 211 located above the last cell piece 1 can constitute the negative electrode 20b of the battery string 10.
From the above, the conventional method for feeding the welding strip for series welding of the battery string is to provide a welding strip feeding mechanism in a direction parallel to the grid bars of the battery pieces, wherein the welding strip feeding mechanism is used for feeding the welding strip in the same extending direction of the battery string. In order to meet the requirement of multi-parallel welding (simultaneously welding a plurality of battery strings), the number of groups of welding strip feeding mechanisms is greatly increased. For example, for m parallel battery string welding, if there are n bars on each battery piece, m groups of solder ribbon feeding mechanisms need to be placed side by side, and each group of solder ribbon feeding mechanisms needs to have n rotating shafts. Along with the increase of the number of parallel battery pieces or the number of grids, the total number of the welding strip feeding mechanisms and the volume of each welding strip feeding mechanism can be greatly increased, so that the occupied area and the cost of equipment are greatly increased, great troubles are brought to the use and the maintenance of later-stage equipment, and the improvement of the production efficiency is further limited.
In addition, in the actual production process, because each solder strip has a small mass and is easy to roll, a positioning mechanism for positioning the solder strip on the battery piece is usually required to be arranged, and another group of clamping mechanisms is often used for conveying the solder strip to the corresponding position of the battery piece. This means that the clamping mechanism needs to keep clamping the solder strip until the positioning mechanism positions the solder strip relative to the battery piece, and cannot release the solder strip, and the clamping mechanism cannot be used for preparing the next set of solder strips, thereby reducing the production efficiency of the whole battery string.
On the other hand, in the prior art, the positioning mechanism usually employs cover plates, and the plurality of cover plates are sequentially transmitted to the upper side of the battery piece by the transmission device to compress the welding strip. For a production line of single battery strings, the conveying device of the cover plate is generally a conveying belt which rotates circularly along the horizontal direction. For a production line which needs to produce a plurality of battery strings simultaneously, the method obviously occupies a large space, and the equipment is not convenient to place.
In summary, most of the methods and apparatuses for producing solar cell strings in the prior art have one or more problems of low production efficiency, high production cost, large floor area, difficulty in use and maintenance, and the like.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a method for producing a solar cell string, which is convenient to operate and high in production efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method of producing a solar cell string comprising at least two cell sheets, the method comprising the steps of:
s1: arranging m battery pieces along the X direction, wherein m is more than or equal to 2;
s2: cutting n original welding strips extending along the X direction and dividing the original welding strips into m groups of welding strip groups, wherein each group of welding strip groups comprises n welding strips extending along the X direction, and n is more than or equal to 1;
s3: separating m groups of the solder strip groups from each other and respectively rotating so that the extending directions of all the solder strips are rotated to the Y direction, and preparing m groups of the solder strip groups extending along the Y direction, wherein the X direction is intersected with the Y direction;
s4: placing m groups of welding strip groups extending along the Y direction on a transfer station, wherein the transfer station is provided with a limiting mechanism for limiting the positions of the welding strips;
s5: arranging m groups of the solder strip groups extending along the Y direction above the m battery pieces respectively;
s6: respectively arranging m battery pieces above m groups of welding strip groups to form m groups of battery strings to be welded, wherein the battery pieces in each group of battery strings are arranged along the Y direction, and in two adjacent battery pieces in the same group of battery strings, each group of welding strip groups are respectively positioned above one battery piece and below the other battery piece;
s7: and welding the welding strips in the m groups of battery strings with the battery sheets at the corresponding positions.
In some embodiments, before the step S2, the method further includes a step S20: preparing n original welding strips extending along the X 'direction, and rotating all the original welding strips to extend along the X direction, wherein the X' direction is intersected with the X direction.
In some preferred embodiments, the steps S2 to S6 are repeated until each group of the battery strings to be welded contains i battery pieces, i ≧ 3, and the step S7 is performed.
In some preferred embodiments, in step S2, n raw solder strips are cut into m groups of solder strips simultaneously.
In some preferred embodiments, in the step S3, the solder ribbons in each group of the solder ribbon groups are simultaneously rotated to extend in the Y direction.
In some preferred embodiments, in the step S7, the battery string is transported to the welding station by the first transporting device along the Y direction.
In some preferred embodiments, in the step S1, the battery piece is transported from the battery piece supplying device by the second transporting device along the X direction.
In some preferred embodiments, in the step S4, the solder ribbon group is transported to the transfer station by a third transporting device.
In some preferred embodiments, in step S5, the solder ribbon groups are transported to the corresponding positions of the battery pieces by a fourth transporting device.
Another object of the present invention is to provide an apparatus for producing solar cell strings that is low in equipment cost, small in floor space, convenient to use and maintain, and high in production efficiency. The apparatus uses the method of producing a battery string, the apparatus comprising: the solder strip preparation device is used for preparing the solder strip group extending along the Y direction;
the battery piece supply device is used for supplying the battery pieces;
the transfer station is used for placing the welding strip group extending along the Y direction and is provided with a limiting mechanism for limiting the position of the welding strip;
the arranging station is used for arranging the battery pieces and the welding strip groups into the battery strings to be welded;
the welding station is used for welding the battery pieces and the welding strips in the battery string;
a first transport device for transporting the battery string to be welded from the arranging station to the welding station;
second transfer means for transferring the battery sheet from the battery sheet supply means to the arranging station;
a third transfer device for transferring the solder ribbon group extending in the Y direction from the solder ribbon preparation device to the transfer station;
and the fourth conveying device is used for conveying the welding strip group extending along the Y direction from the transfer station to the arrangement station.
In some preferred embodiments, the limiting mechanism is a transfer groove disposed on the transfer station, the transfer groove has a plurality of strips disposed at intervals along an X direction, each strip extends along a Y direction, and each strip is used for correspondingly placing one strip.
Preferably, the transfer station has at least m × n transfer slots.
In some preferred embodiments, the solder strip preparation apparatus includes: the welding strip winding mechanism is used for winding a welding strip material;
the drawing mechanism is used for drawing the welding strip material out from the welding strip winding mechanism along the X' direction;
the cutting mechanism is used for cutting the welding strip to obtain the original welding strip extending along the X' direction and cutting the original welding strip into m welding strips;
the clamping mechanism is used for clamping the welding strip;
a rotating mechanism connected with the clamping mechanism and used for rotating the extending direction of the welding strip to the Y direction,
wherein the X' direction is parallel to or intersects the X direction.
In some particularly preferred embodiments, the solder strip manufacturing apparatus includes at least m groups of the clamping mechanisms and at least m groups of the rotating mechanisms, each group of the clamping mechanisms is connected with one group of the rotating mechanisms, each group of the clamping mechanisms is used for clamping one group of the solder strips, each group of the clamping mechanisms includes at least n clamping units, each clamping unit is used for clamping one solder strip, and preferably clamping two end portions of the solder strip.
In some preferred embodiments, the apparatus further comprises a positioning assembly conveying device for conveying a positioning assembly to the arranging station, the positioning assembly for limiting the relative positions of the solder ribbon and the battery piece in the battery string to be soldered, the positioning assembly conveying device comprising a conveying belt for conveying the positioning assembly in the Y direction.
In some preferred embodiments, the positioning component conveying device further includes a first moving mechanism for moving the positioning component from the conveyor belt to above the battery string to be welded, and a second moving mechanism for moving the positioning component from above the welded battery string to the conveyor belt for conveying the positioning component from the second moving mechanism to the first moving mechanism.
In some embodiments, when the X 'direction intersects the X direction, the solder strip preparation apparatus further includes a rotation mechanism for rotating the raw solder strip extending in the X' direction to extend in the X direction.
According to the invention, the angle between the X-direction and the Y-direction is α, 0< α <180 °. Preferably, α =90 °.
Preferably, the X' direction is parallel to the X direction.
Welding means according to the present invention include, but are not limited to, infrared welding, hot air welding, contact welding, electromagnetic induction welding, and the like.
Due to the application of the technical scheme, the method for producing the solar cell strings can be used for producing m groups of cell strings simultaneously, and the transfer station can release the clamping mechanism or the transmission mechanism in time, so that the clamping mechanism or the transmission mechanism can be used for preparing the next group of solder strip groups, and the production efficiency of the solar cell strings is greatly improved; the production equipment of the method can realize the simultaneous production of a plurality of groups of battery strings only by one welding strip preparation device, the equipment is further provided with a positioning component transmission device which can effectively utilize space, the whole equipment has simple structure and is convenient to use and maintain, the equipment cost and the occupied area are greatly reduced, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a solar cell string in the prior art;
FIG. 2 is a schematic side view of FIG. 1;
FIG. 3 is a schematic structural diagram of a battery cell in the prior art;
FIG. 4 is a schematic perspective view of an apparatus for producing a solar cell string according to an embodiment of the present invention;
FIG. 5 is an enlarged view of the point A in FIG. 4;
FIG. 6 is a schematic top view of FIG. 4;
FIG. 7 is a schematic front view of FIG. 4;
fig. 8 is a partial perspective view of the solder strip manufacturing apparatus in this embodiment at step S2;
fig. 9 is a partial perspective view of the solder strip manufacturing apparatus in this embodiment at step S3;
fig. 10 is another partial perspective view of the solder strip manufacturing apparatus in this embodiment at step S3;
FIG. 11 is a schematic perspective view of a set of clamping mechanism and rotating mechanism in the present embodiment, wherein the clamping mechanism is not rotated;
FIG. 12 is a schematic perspective view of a set of clamping mechanism and rotating mechanism in this embodiment, wherein the clamping mechanism rotates 90 degrees;
fig. 13 is a schematic view of step S1 in the method for producing a solar cell string according to the present embodiment;
fig. 14 is a schematic view of step S2 in the method for producing a solar cell string according to the present embodiment;
fig. 15 is a schematic view of step S3 in the method for producing a solar cell string according to the present embodiment;
fig. 16 is another schematic diagram of step S3 in the method for producing a solar cell string according to the present embodiment;
fig. 17 is a schematic view of step S5 in the method for producing a solar cell string according to the present embodiment;
FIG. 18 is a side schematic view of FIG. 17;
fig. 19 is a schematic view of step S6 in the method of producing a solar cell string according to the present embodiment;
FIG. 20 is a side schematic view of FIG. 19;
fig. 21 is a schematic view of step S7 in the method of producing a solar cell string according to the present embodiment;
wherein: 1000. a solder strip preparation device; 1100. a solder strip winding mechanism; 1200. a belt pulling mechanism; 1300. a cutting mechanism; 1400. a clamping mechanism; 1500. a rotation mechanism; 2000. arranging stations; 2100. a transfer station; 3000. a battery piece supply device; 4000. a welding station; 5000. a first transmission device; 6000. a second transmission device; 7100. an X-direction moving axis; 7200. a Y-direction moving axis; 7300. a Z-direction moving axis; 7400. a fourth transmission device; 7501. a conveyor belt; 7502. a second moving mechanism; 8000. a frame;
1. a battery piece; 11. grid bars; 10. a battery string; 2. welding a strip material; 21. original welding of the strip; 211. welding a strip; 20. welding a band group; 20a, a positive electrode; 20b, a negative electrode; 3. a clamping unit; 31. a clamping jaw; 4. a clamping cylinder; 5. a positioning assembly; 6. a transit trough.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and is not intended to limit the invention thereto.
The device and method of the invention are used for the simultaneous production of m groups of solar cell strings 10 as shown in fig. 1 and 2, where m ≧ 2, in the device schematic for example m =6, and in the method schematic for example m =3, it being understood that any value within the range of m does not affect the basic principle of the inventive concept.
Each group of battery strings 10 includes k battery pieces 1 arranged in sequence along the Y direction, where k is greater than or equal to 2, two adjacent battery pieces 1 are connected in series through a group of solder strip groups 20, each group of solder strip groups 20 includes n solder strips 211 extending along the Y direction, n is greater than or equal to 1, and where n = 12. In the present embodiment, the upper surface of each cell piece 1 constitutes its own negative electrode, and the lower surface constitutes its own positive electrode. In the Y direction, a part of each solder strip 211 is connected above the next cell 1, and the other part is connected below the previous cell 1, that is, the solder strip groups 20 and the cell 1 are staggered up and down in the Y direction, so that the series connection of a group of cell strings 10 can be realized. In some embodiments, a group of solder ribbon groups 20 is connected below the rearmost cell piece 1 in the Y direction, constituting the positive electrode 20a of the entire group of cell strings 10; another set of the solder ribbon sets 20 is connected to the top of the battery sheet 1 at the forefront in the Y direction, and constitutes the negative electrode 20b of the entire battery string 10.
Referring to fig. 3, n grids 11 are respectively arranged on the front side and the back side of each cell 1, the extending directions of the n grids 11 are parallel to each other on the same side of the cell 1, and the grids 11 on the front side of the cell 1 correspond to the grids 11 on the back side along the thickness direction of the cell 1. In the battery string 10, all the grid bars 11 extend in the Y direction, so that each side of each battery piece 1 can correspond to one group of solder strips 20, and one solder strip 211 can be correspondingly soldered to one grid bar 11.
In this embodiment, the m groups of battery strings 10 are sequentially arranged along the X direction, the X direction intersects with the Y direction, the X direction and the Y direction are perpendicular to each other and extend along the horizontal direction in this embodiment, and each battery piece 1 in the m groups of battery strings 10 is arranged in an array.
Referring to fig. 4 to 7, an apparatus for simultaneously producing m sets of the above-described battery strings 10 includes a frame 8000, a solder strip preparing apparatus 1000 mounted on the frame 8000, a battery sheet supplying apparatus 3000, a first transferring apparatus 5000, a second transferring apparatus 6000, a third transferring apparatus, a fourth transferring apparatus 7400, and the like. The solder ribbon preparation apparatus 1000 is used for preparing the solder ribbon assembly 20 extending in the Y direction, and the cell sheet supply apparatus 3000 is used for supplying the cell sheet 1.
In this embodiment, the solder ribbon group 20 prepared by the solder ribbon preparation apparatus 1000 and the battery sheet 1 are arranged into the battery string 10 to be soldered at the arranging station 2000, and then the battery string 10 to be soldered is soldered at the soldering station 4000.
Further, the apparatus further includes a transfer station 2100, the transfer station 2100 is used for temporarily placing the solder ribbon assembly 20 prepared by the solder ribbon preparation apparatus 1000, and the transfer station 2100 is provided with a limiting mechanism for limiting the position of each solder ribbon 211.
Accordingly, the second transfer device 6000 is used to transfer the battery sheet 1 from the battery sheet supply device 3000 to the arranging station 2000; the third transfer device is used for transferring the prepared solder strip group 20 extending along the Y direction from the solder strip preparation device 1000 to the transfer station 2100; a fourth transfer device 7400 for transferring the solder ribbon group 20 extending in the Y direction from the transfer station 2100 to the placement station 2000; a first transport device 5000 is used to transport the battery string 10 to be welded from the arranging station 2000 to the welding station 4000, the first transport device 5000 in turn being able to transport the finished welded battery string 10.
In this embodiment, the second transfer device 6000 arranges m battery pieces 1 at a time in the arrangement station 2000 in the X direction. Correspondingly, the solder ribbon groups 20 prepared by the solder ribbon preparation apparatus 1000 have m groups arranged at intervals in the X direction, and each group of solder ribbon groups 20 includes n solder ribbons 211 parallel to each other and extending in the Y direction. Thus, at the arranging station 2000, the m battery pieces 1 correspond to the m groups of solder ribbon groups 20 in position one to one. Further, the welding station 4000, the arrangement station 2000, the transfer station 2100, and the solder strip manufacturing apparatus 1000 are sequentially arranged along the Y direction, the first conveying apparatus 5000 employs a conveyor belt, and the first conveying apparatus 5000 can reversely convey the battery string 10 along the Y direction.
In order to save the equipment cost and the floor space and improve the production efficiency, one solder strip manufacturing apparatus 1000 in this embodiment can simultaneously manufacture m sets of the solder strip sets 20. Specifically, the solder strip preparation apparatus 1000 includes a solder strip winding mechanism 1100, a tape pulling mechanism 1200, a cutting mechanism 1300, a clamping mechanism 1400, and a rotating mechanism 1500.
Among them, the solder strip winding mechanism 1100 is provided on one side portion of the frame 8000 in the X direction, and supplies the solder strip 2, which is a raw material of the solder strip 211. The welding strip winding mechanism 1100 has n groups, each group of welding strip winding mechanisms 1100 has a rotatable rotating shaft, and n groups of welding strip materials 2 are correspondingly wound on the rotating shafts of the n groups of welding strip winding mechanisms 1100. The tape drawing mechanism 1200 is provided on the frame 8000 so as to be movable back and forth in the X ' direction, and the tape drawing mechanism 1200 can draw one end portions of the n sets of solder ribbon strips 2 at the same time, and draw out the n sets of solder ribbon strips 2 from the solder ribbon winding mechanism 1100 in the X ' direction at the same time, thereby obtaining n parallel solder ribbon strips 2 each extending in the X ' direction. Wherein, the X 'direction intersects with the Y direction, and in this embodiment, the X' direction is parallel to the X direction.
The cutting mechanism 1300 is configured to cut the solder strip 2, so that the solder strip 2 pulled out by the pulling strip mechanism 1200 is separated from the solder strip 2 wound on the solder strip winding mechanism 1100, the cut solder strip 2 is the original solder strip 21 extending along the X 'direction, and the original solder strip 21 is continuously cut to obtain a plurality of solder strips 211 extending along the X' direction. Specifically, the cutting mechanisms 1300 have (m + 1) sets arranged at intervals in the X ' direction, the two sets of cutting mechanisms 1300 located at the two end portions can simultaneously cut the n drawn-out solder strip tapes 2 to obtain n raw solder strips 21 extending in the X ' direction, and the cutting mechanism 1300 located in the middle can further divide each raw solder strip 21 into m solder strips 211, each solder strip 211 extending in the X ' direction. Cutting means include, but are not limited to, mechanical cutting, laser cutting, and the like.
It should be noted that in other embodiments, for example, in a scene limited by factory space, the X' direction may intersect the X direction. In this case, the solder strip manufacturing apparatus 1000 is further provided with a rotating mechanism for integrally rotating the original solder strips 21 extending in the n X' directions to extend in the X direction, so that the subsequent steps can be performed.
Referring to fig. 8 and 12, as can be seen from the above, after the cutting by the cutting mechanism 1300, m sets of solder strip sets 20 extending along the X direction can be obtained, each set of solder strip set 20 includes n solder strips 211 extending along the X direction, in order to obtain m sets of solder strip sets 20 extending along the Y direction, the solder strip preparation apparatus 1000 is further provided with m sets of clamping mechanisms 1400 and m sets of rotating mechanisms 1500, which are in one-to-one correspondence, and a set of rotating mechanisms 1500 is connected above each set of clamping mechanisms 1400. Specifically, m groups of clamping mechanisms 1400 are arranged along the X direction, each group of clamping mechanisms 1400 comprises n clamping units 3, each clamping unit 3 comprises two groups of clamping jaws 31 respectively arranged on two sides, each clamping mechanism 1400 further comprises a clamping cylinder 4 used for driving the two adjacent groups of clamping jaws 31 to move in opposite directions or in opposite directions, so that each clamping unit 3 can clamp two end portions of one welding strip 211, and each group of clamping mechanisms 1400 can simultaneously clamp all welding strips 211 parallel to each other in one group of welding strip groups 20, so that the positions of all welding strips 211 are relatively fixed without deviating from the corresponding positions, and the welding strips 211 can be kept in a tightened state. Therefore, the rotating mechanism 1500 can drive the clamping mechanism 1400 to rotate around the rotation center line P, the rotation center line P extends along the Z direction, and after rotating 90 degrees, the rotating mechanism 1500 enables the extending directions of all the solder strips 211 clamped by the clamping mechanism 1400 to rotate to the Y direction at the same time. In this embodiment, the m sets of rotation mechanisms 1500 are independent of each other and can rotate separately or simultaneously.
In other embodiments, the cutting mechanism 1300 may be integrated with the clamping mechanism 1400 to facilitate cutting the raw solder strip 21.
From above, when the solder ribbon group 20 extending in the Y direction is prepared, it needs to be transferred to the transfer station 2100 by the third transfer device. In order to achieve accurate positioning, the third transmission device specifically includes an X-direction moving shaft 7100, a Y-direction moving shaft 7200 and a Z-direction moving shaft 7300, which are connected together in a manner that two of the three shafts can move relatively, wherein the X-direction moving shaft 7100 extends along the X direction, the Y-direction moving shaft 7200 extends along the Y direction, and the Z-direction moving shaft 7300 extends along the Z direction, where the Z direction extends as an upward extending direction. The m sets of rotating mechanisms 1500 are respectively connected to the X-direction moving shaft 7100 through a mover and can relatively slide along the X-direction moving shaft 7100, so that the solder ribbon set 20 clamped by the clamping mechanism 1400 can be accurately placed at the transfer station 2100 through the third transmission device.
In this embodiment, the X direction, the Y direction, and the Z direction are not coplanar, and the three directions are perpendicular to each other, so that the rotating mechanism 1500 and the clamping mechanism 1400 connected to the X-direction moving shaft 7100 can reach each position in the spatial range spanned by the three moving shafts, thereby realizing the precise pairing of the solder ribbon group 20 and the transfer station 2100.
Referring to fig. 5 and 7, in the present embodiment, the working surface of the transfer station 2100 is substantially flush with the placement station 2000, and the transfer station 2100 is provided with a limiting mechanism for limiting the position of the solder ribbon group 20. Therefore, after the solder strip group 20 is placed on the transfer station 2100 by the clamping mechanism 1400, the next solder strip group 20 can be prepared by returning, and the positioning of the to-be-positioned component 7 is not needed, so that the production efficiency is effectively improved.
Specifically, stop gear on transfer station 2100 is many transfer grooves 6, and every transfer groove 6 extends along the Y direction, and transfer groove 6 has m X n that sets up along the X direction interval, and every solder strip 211 can be placed in a transfer groove 6 correspondingly to m group solder strip group 20 can be placed simultaneously in all transfer grooves 6 one-to-one, and the position is fixed between each solder strip 211, is difficult for rolling.
In other embodiments, the limiting mechanism may also adopt different forms such as a spring pin, a hook, etc., as long as it can play a role in limiting the position of the solder ribbon group 20.
Accordingly, since the transfer station 2100 is aligned with the placement station 2000 in the X direction and is substantially flush with the placement station 2000 in the Z direction, the fourth transfer device 7400 mainly functions to integrally move the m solder ribbon groups 20 to the placement station 2000 in the Y direction. Specifically, the fourth transfer device 7400 includes m × n sets of the clamping jaws arranged in the X direction, which are capable of moving the m sets of the solder ribbon groups 20 as a whole to the arranging station 2000.
In addition, the equipment further comprises a positioning component transmission device which is used for transmitting the positioning component 7 to the arrangement station 2000, wherein the positioning component 7 is a cover plate which can press the welding strip group 20 in the battery string 10 to be welded and the battery sheet 1 together. The positioning component transmission device specifically includes a transmission belt 7501, a first moving mechanism and a second moving mechanism 7502.
The conveying belt 7501 is used for conveying the positioning components 7 along the Y direction, the conveying belt 7501 is connected end to end along the length direction of the conveying belt 7501, the conveying belt 7501 can rotate circularly to form an up-and-down backflow, the upper portion of the conveying belt 7501 moves along the Y direction, the lower portion of the conveying belt 7501 moves in the reverse direction of the Y direction, and the positioning components 7 are arranged on the upper surface of the conveying belt 7501 along the Y direction.
Accordingly, the second moving mechanism 7502, the conveyor belt 7501, the first moving mechanism, and the arranging station 2000 are sequentially provided in the Y direction, and the welding station 4000 is located in the Y direction of the second moving mechanism 7502. The first moving mechanism is used to move the positioning member 7 from above the conveyor belt 7501 to the battery string 10 to be welded, the second moving mechanism 7502 is used to move the positioning member 7 from above the welded battery string 10 onto the conveyor belt 7501, and the conveyor belt 7501 is used to transport the positioning member 7 from the first moving mechanism to the second moving mechanism 7502. In this way, the whole positioning component transmission device realizes the cyclic transmission and use of the positioning component 7.
In this embodiment, the first moving mechanism and the second moving mechanism 7502 both adopt a structure of a mechanical gripper, the moving manner thereof is similar to that of the third transmission device, and the description is omitted here, and the first moving mechanism and the second transmission device 6000 can share the same set of mechanism, so as to grasp both the battery piece 1 and the positioning assembly 7.
In this embodiment, since m groups of battery strings 10 arranged in the X direction are simultaneously produced, in order to effectively achieve positioning, the positioning assemblies 7 are also long strips extending in the X direction, and each positioning assembly 7 can be simultaneously pressed above m battery pieces 1. Correspondingly, in order to simplify the structure of the apparatus and reduce the cost of the apparatus, the conveyor belts 7501 have two sets which are respectively disposed on both sides of the frame 8000 along the X direction, and the height, length and operation speed of the two sets of conveyor belts 7501 are kept consistent, so that both ends of each positioning component 7 can be correspondingly disposed on the two sets of conveyor belts 7501, and stable transmission is realized.
The locating component transmission device adopted in the embodiment has the advantages that the transmission direction is consistent with the extending direction of the battery string 10, the locating component transmission device is integrally located above the battery string 10, redundant space can not be occupied for the large-scale battery string 10 production line, the space utilization rate is greatly improved, and the occupied area is saved.
Referring to fig. 13 to fig. 21, a process schematic diagram of the method for producing a solar cell string in the present embodiment is shown, which includes the following specific steps:
s1, transferring the battery pieces 1 from the battery piece supply device 3000 by the second transfer device 6000 in the X direction so that m battery pieces 1 are arranged in the X direction at the arrangement station 2000;
s2: the tape drawing mechanism 1200 simultaneously draws n solder strip materials 2 extending in the X' direction (here, the X direction) from the solder strip winding mechanism 1100, the m sets of clamping mechanisms 1400 move above the drawn solder strip materials 2 and respectively clamp part of the solder strip materials 2, and each set of clamping mechanisms 1400 is located between two sets of cutting mechanisms 1300; all the cutting mechanisms 1300 cut off the solder strip 2 at the corresponding position to obtain n original solder strips 21 extending along the X direction, and further obtain m groups of solder strip groups 20, each group of solder strip groups 20 comprises n solder strips 211 extending along the X direction, each solder strip 211 is clamped by one clamping unit 3, and each group of solder strip groups 20 is clamped by one group of clamping mechanisms 1400;
s3: the X-direction moving shaft 7100 disperses the m groups of clamping mechanisms 1400 in the X direction, that is, disperses the m groups of solder ribbon groups 20 in the X direction so that two groups of solder ribbon groups 20 adjacent to each other in the X direction are away from each other; each group of the rotating mechanisms 1500 respectively drives the clamping mechanisms 1400 connected thereto to rotate 90 ° (counterclockwise in this embodiment) around the rotation center line P, so that the extending directions of all the solder strips 211 are rotated to the Y direction, and m groups of solder strip groups 20 extending along the Y direction are prepared, wherein all the clamping mechanisms 1400 rotate simultaneously;
s4: the third conveying device conveys all the clamping mechanisms 1400 to the transfer station 2100, the m groups of solder strip groups 20 extending in the Y direction are correspondingly placed in the transfer slot 6, and then the unloaded clamping mechanisms 1400 can be returned to be used for preparing the next group of solder strip groups 20;
s5: the fourth conveying device 7400 m sets of solder strip sets 20 extending along the Y direction move to the arranging station 2000, the m sets of solder strip sets 20 are respectively arranged above the m battery pieces 1, each set of solder strip set 20 corresponds to one battery piece 1, and a part of each solder strip 211 is located above the battery piece 1, and the other part of each solder strip 211 extends beyond the edge of the battery piece 1 and extends outwards along the Y direction;
s6: the second transmission device 6000 arranges the new m battery pieces 1 above the m groups of welding strip groups 20 respectively to form m groups of battery strings 10 to be welded, a plurality of battery pieces 1 in each group of battery strings 10 are sequentially arranged along the Y direction, in two adjacent battery pieces 1 along the Y direction, each group of welding strip groups 20 are respectively positioned above the previous battery piece 1 and below the next battery piece 1;
repeating the steps S2 to S6 until each group of battery strings to be welded contains i battery pieces, i is more than or equal to 3, and then executing the step S7;
s7: the first conveying device 5000 conveys m groups of the battery strings 10 to be welded to the welding station 4000 in the reverse direction of the Y direction, and welds the welding strip group 20 to the battery sheet 1 at the corresponding position, wherein the m groups of the battery strings 10 can be welded simultaneously or separately, and the welding modes include but are not limited to infrared welding, hot air welding, contact welding, electromagnetic induction welding and the like.
In summary, compared with the prior art, the apparatus and method for producing solar cell strings provided by the present invention do not need multiple sets of solder strip preparation devices, and can simultaneously feed multiple sets of solar cell strings by using one set of solder strip preparation device 1000, and the transfer station 2100 can effectively improve the production efficiency, and the positioning component transmission device greatly improves the space utilization rate, saves the floor area, reduces the production cost, and is convenient to use and maintain.
The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (10)
1. A method of producing a solar cell string comprising at least two cells, characterized in that the method comprises the steps of:
s1: arranging m battery pieces along the X direction, wherein m is more than or equal to 2;
s2: cutting n original welding strips extending along the X direction and dividing the original welding strips into m groups of welding strip groups, wherein each group of welding strip groups comprises n welding strips extending along the X direction, and n is more than or equal to 1;
s3: separating m groups of the solder strip groups from each other and respectively rotating so that the extending directions of all the solder strips are rotated to the Y direction, and preparing m groups of the solder strip groups extending along the Y direction, wherein the X direction is intersected with the Y direction;
s4: placing m groups of welding strip groups extending along the Y direction on a transfer station, wherein the transfer station is provided with a limiting mechanism for limiting the positions of the welding strips;
s5: arranging m groups of the solder strip groups extending along the Y direction above the m battery pieces respectively;
s6: respectively arranging m battery pieces above m groups of welding strip groups to form m groups of battery strings to be welded, wherein the battery pieces in each group of battery strings are arranged along the Y direction, and in two adjacent battery pieces in the same group of battery strings, each group of welding strip groups are respectively positioned above one battery piece and below the other battery piece;
s7: and welding the welding strips in the m groups of battery strings with the battery sheets at the corresponding positions.
2. The method for producing a solar cell string according to claim 1, wherein the steps S2 to S6 are repeated until each group of the cell string to be welded contains i of the cell pieces, i ≧ 3, and the step S7 is performed.
3. The method for producing a solar cell string according to claim 1, further comprising, before the step S2, a step S20: preparing n original welding strips extending along the X 'direction, and rotating all the original welding strips to extend along the X direction, wherein the X' direction is intersected with the X direction.
4. The method for producing a solar cell string according to claim 1, wherein in the step S2, n pieces of the raw solder ribbons are simultaneously cut into m groups of the solder ribbon groups; and/or in the step S3, the solder strips in each solder strip group are rotated simultaneously to extend along the Y direction.
5. The method for producing the solar cell string according to claim 1, wherein in the step S7, the cell string is transported to the soldering station by a first transporting device in a Y direction; and/or the presence of a gas in the gas,
in the step S1, the battery piece is transported from the battery piece supplying device along the X direction by the second transporting device; and/or the presence of a gas in the gas,
in the step S4, the solder ribbon group is transported to the transfer station by a third transporting device; and/or the presence of a gas in the gas,
in the step S5, the solder ribbon groups are transported to the corresponding positions of the battery pieces by a fourth transporting device.
6. An apparatus for producing a solar cell string using the method for producing a solar cell string according to any one of claims 1 to 5, characterized by comprising:
the solder strip preparation device is used for preparing the solder strip group extending along the Y direction;
the battery piece supply device is used for supplying the battery pieces;
the transfer station is used for placing the welding strip group extending along the Y direction and is provided with a limiting mechanism for limiting the position of the welding strip;
the arranging station is used for arranging the battery pieces and the welding strip groups into the battery strings to be welded;
the welding station is used for welding the battery pieces and the welding strips in the battery string;
a first transport device for transporting the battery string to be welded from the arranging station to the welding station;
second transfer means for transferring the battery sheet from the battery sheet supply means to the arranging station;
a third transfer device for transferring the solder ribbon group extending in the Y direction from the solder ribbon preparation device to the transfer station;
and the fourth conveying device is used for conveying the welding strip group extending along the Y direction from the transfer station to the arrangement station.
7. The apparatus according to claim 6, wherein the limiting mechanism is a plurality of transfer grooves arranged on the transfer station, each transfer groove is spaced along the X direction and extends along the Y direction, and each transfer groove is used for correspondingly placing one solder strip.
8. The apparatus for producing a solar cell string according to claim 6, wherein the solder ribbon preparation device includes: the welding strip winding mechanism is used for winding a welding strip material;
the drawing mechanism is used for drawing the welding strip material out from the welding strip winding mechanism along the X' direction;
the cutting mechanism is used for cutting the welding strip to obtain the original welding strip extending along the X' direction and cutting the original welding strip into m welding strips;
the clamping mechanism is used for clamping the welding strip;
a rotating mechanism connected with the clamping mechanism and used for rotating the extending direction of the welding strip to the Y direction,
wherein the X' direction is parallel to or intersects the X direction.
9. The apparatus for producing a solar cell string according to claim 6, further comprising a positioning member transporting device for transporting a positioning member for restricting the relative positions of the solder ribbon and the cell sheet in the cell string to be soldered to the arranging station, the positioning member transporting device including a transport belt for transporting the positioning member in the Y direction.
10. The apparatus for producing a solar cell string according to claim 9, wherein the positioning member transporting device further comprises a first moving mechanism for moving the positioning member from the transport belt to above the cell string to be welded, and a second moving mechanism for moving the positioning member from above the welded cell string to the transport belt for transporting the positioning member from the second moving mechanism to the first moving mechanism.
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| CN202110691733.4A Pending CN113284983A (en) | 2021-06-10 | 2021-06-22 | Method and equipment for producing solar cell string |
| CN202110691762.0A Pending CN113319472A (en) | 2021-06-10 | 2021-06-22 | Solder strip preparation method and device |
| CN202110751843.5A Active CN113427178B (en) | 2021-06-10 | 2021-07-02 | Method and apparatus for producing plate interconnected solar cell strings |
| CN202121504231.8U Active CN214753818U8 (en) | 2021-06-10 | 2021-07-02 | Equipment for producing plate interconnected solar cell string |
| CN202121504065.1U Active CN215091700U (en) | 2021-06-10 | 2021-07-02 | Equipment for producing plate interconnected solar cell strings |
| CN202110751827.6A Active CN113471331B (en) | 2021-06-10 | 2021-07-02 | Method and equipment for producing plate interconnected solar cell strings |
| CN202110751834.6A Active CN113299799B (en) | 2021-06-10 | 2021-07-02 | Method and apparatus for producing solar cell string |
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| CN202110691733.4A Pending CN113284983A (en) | 2021-06-10 | 2021-06-22 | Method and equipment for producing solar cell string |
| CN202110691762.0A Pending CN113319472A (en) | 2021-06-10 | 2021-06-22 | Solder strip preparation method and device |
| CN202110751843.5A Active CN113427178B (en) | 2021-06-10 | 2021-07-02 | Method and apparatus for producing plate interconnected solar cell strings |
| CN202121504231.8U Active CN214753818U8 (en) | 2021-06-10 | 2021-07-02 | Equipment for producing plate interconnected solar cell string |
| CN202121504065.1U Active CN215091700U (en) | 2021-06-10 | 2021-07-02 | Equipment for producing plate interconnected solar cell strings |
| CN202110751827.6A Active CN113471331B (en) | 2021-06-10 | 2021-07-02 | Method and equipment for producing plate interconnected solar cell strings |
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| CN114283998B (en) * | 2021-12-28 | 2024-04-12 | 苏州光汇新能源科技有限公司 | Wire mesh production device, solar cell interconnection system and method thereof |
| CN114512572B (en) * | 2022-02-18 | 2024-03-29 | 深圳赛能数字能源技术有限公司 | Solder strip prefabricated part and production method thereof, solder strip and production method thereof |
| CN114725228B (en) * | 2022-04-02 | 2023-03-24 | 宁夏小牛自动化设备股份有限公司 | Battery unit, battery string, preparation method and device of battery unit and battery string monomer |
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| CN113471331A (en) | 2021-10-01 |
| CN113284983A (en) | 2021-08-20 |
| CN113319472A (en) | 2021-08-31 |
| CN215747253U (en) | 2022-02-08 |
| CN215091700U (en) | 2021-12-10 |
| CN113427178B (en) | 2023-05-05 |
| CN113471331B (en) | 2023-07-14 |
| CN113299799B (en) | 2023-04-18 |
| CN214753818U8 (en) | 2021-12-21 |
| CN214753818U (en) | 2021-11-16 |
| CN113427178A (en) | 2021-09-24 |
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