CN113284983A

CN113284983A - Method and equipment for producing solar cell string

Info

Publication number: CN113284983A
Application number: CN202110691733.4A
Authority: CN
Inventors: 陈城; 李永康; 晏俊
Original assignee: Suzhou Zhh Automatic Equipment Co ltd
Current assignee: Suzhou Zhh Automatic Equipment Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-22
Publication date: 2021-08-20
Also published as: CN215091700U; CN113299799A; CN113471331A; CN113427178B; CN113299799B; CN113427178A; CN214753818U8; CN215747253U; CN214753818U; CN113471331B; CN113319472A

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, wherein m is more than or equal to 2; s2: respectively arranging m groups of prepared welding strips extending along the Y direction above the m battery pieces, wherein the X direction is intersected with the Y direction; s3: respectively arranging m battery pieces above m groups of welding strips to form m groups of unwelded battery strings, wherein the battery pieces in each group of battery strings are arranged along the Y direction; in two adjacent battery pieces in the same battery string, each group of welding strips is respectively positioned above one battery piece and below the other battery piece; s4: and welding the welding strips in the m groups of battery strings with the battery sheets at the corresponding positions. The equipment comprises an arrangement station, a welding strip preparation device, a battery piece supply device, a plurality of conveying devices and the like. The method of the invention greatly improves the production efficiency, has simple equipment structure, is convenient to use and maintain, and greatly reduces the equipment cost and the occupied area.

Description

Method and equipment for producing solar cell string

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. 22 and 23, in the prior art, a series connection method of solar cells is as follows: the solder strip feeding mechanism 9000 can provide a group of solder strips (conductor strips) which are parallel to each other, a plurality of grid strips 11 which are parallel to each other are arranged on the front and back surfaces 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 solder strips, each solder strip is correspondingly clamped in the grid strips 11 of the two battery pieces 1, the solder strips and the battery pieces 1 are continuously and alternately placed by automation 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 solder strips, the length extending direction of the grid strips 11 and the extending direction of the battery string 10 are parallel to each other or coincide with each other.

From the above, the conventional method for feeding the welding strips for series welding of the battery strings is to arrange a plurality of groups of welding strip feeding mechanisms in the direction parallel to the grid bars of the battery pieces, and to meet the requirement of multiple parallel welding (simultaneous welding of a plurality of battery strings), the number of groups of welding strip feeding mechanisms can be greatly increased. For example, for m parallel cell welding, if there are n grid bars on each cell, m sets of solder ribbon feeding mechanisms are required, and each set of solder ribbon feeding mechanism needs to have n rotating shafts. As the number of parallel battery pieces or the number of grids increases, the total number m of the solder strip feeding mechanisms is greatly increased. Therefore, the occupied area and the cost of the equipment are greatly increased, great troubles are brought to the use and the maintenance of the equipment in the later period, and the improvement of the production efficiency is further limited.

At present, some improved technologies for a solar cell string production method appear, for example, the production efficiency of the solar cell string is improved by optimizing a transmission mode of a cell sheet and a conductor strip, but the equipment is not essentially improved, and the technical problems of high production cost and large equipment floor area are not solved. In the method, the cell sheet above the cell sheet needs to be lifted up in the process of welding a plurality of small cell strings, so that the complexity and difficulty of the production process are increased undoubtedly, and the production and running cost of equipment is correspondingly increased.

In summary, most of the production methods of 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: respectively arranging m groups of prepared welding strips extending along the Y direction above m battery pieces, wherein the X direction is intersected with the Y direction;

s3: respectively arranging m battery pieces above m groups of welding strips to form m groups of unwelded battery strings, wherein the battery pieces in each group of battery strings are arranged along the Y direction; in two adjacent battery pieces in the same battery string, each group of welding strips is respectively positioned above one battery piece and below the other battery piece;

s4: and welding the welding strips in the m groups of battery strings with the battery sheets at the corresponding positions.

Preferably, the X-direction is perpendicular or substantially perpendicular to the Y-direction.

In some preferred embodiments, the steps S2 and S3 are repeated until each group of the unwelded battery strings contains k battery pieces, k ≧ 3, and the step S4 is performed.

In some preferred embodiments, in step S2, a raw solder strip extending along the X 'direction is cut and divided into m solder strips, and each solder strip extends along the X' direction; and rotating the extending direction of the welding strip to the Y direction to prepare the welding strip extending along the Y direction.

In some particularly preferred embodiments, in step S2, n raw solder strips extending along the X' direction are cut simultaneously to form m solder strip groups containing a plurality of solder strips, the solder strips of each solder strip group are rotated simultaneously to extend along the Y direction, wherein n ≧ 2.

In some particularly preferred embodiments, the rotated solder strips are respectively transferred to the positions of the corresponding battery cells by a third transfer device.

In some preferred embodiments, in the step S4, 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 m groups of the battery strings are welded simultaneously or individually.

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 for producing a solar cell string, the apparatus comprising:

a solder strip preparing device for preparing the solder strip extending in the Y direction;

the arranging station is used for arranging the battery pieces and the welding strips into the battery strings to be welded;

the battery piece supply device is used for supplying the battery pieces;

the welding station is used for welding the battery pieces and the welding strips in the battery string;

a first transfer device for transferring the battery string from the placement station to the welding station;

second transfer means for transferring the battery sheet from the battery sheet supply means to the arranging station;

and the third conveying device is used for conveying the welding strip from the welding strip preparation device to the arrangement station.

In some preferred embodiments, the solder strip preparation apparatus includes: the welding strip winding mechanism is used for winding a welding strip material on the welding strip winding mechanism;

the pull belt mechanism is used for pulling out the welding belt material from the welding belt winding mechanism;

the cutting mechanism is used for cutting the welding strip material to obtain an original welding strip extending along the X 'direction, and cutting the original welding strip into m welding strips, wherein each welding strip extends along the X' direction;

the clamping mechanism is used for clamping the welding strip;

and the rotating mechanism is connected with the clamping mechanism and is used for rotating the extending direction of the welding strip to the Y direction.

Preferably, the X' direction intersects the Y direction; further preferably, the X' direction is parallel to the X direction.

In some particularly preferred embodiments, the solder strip preparation 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 includes at least n clamping units, and each clamping unit is used for clamping one solder strip, preferably clamping two end portions of the solder strip.

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, so that 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, has simple structure, is convenient to use and maintain, greatly reduces the equipment cost and the occupied area, and improves the production efficiency.

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. 1-1 is a schematic perspective view of an embodiment of the apparatus for manufacturing a solar cell string according to the present invention at step S21;

FIG. 1-2 is an enlarged schematic view of A of FIG. 1-1;

FIG. 2 is a schematic top view of FIG. 1;

FIG. 3 is a schematic front view of FIG. 1;

fig. 4 is a schematic perspective view of the apparatus for manufacturing a solar cell string according to the present embodiment at step S23;

FIG. 5 is a schematic front view of FIG. 4;

fig. 6 is a schematic perspective view of the apparatus for manufacturing a solar cell string according to the present embodiment at step S24;

FIG. 7 is a schematic front view of FIG. 6;

fig. 8 is a schematic perspective view of the apparatus for manufacturing a solar cell string according to the present embodiment at step S25;

FIG. 9 is a schematic front view of FIG. 8;

FIG. 10 is a schematic top view of FIG. 8;

fig. 11 is a partial perspective view of the solder strip manufacturing apparatus in this embodiment at step S21;

fig. 12 is a partial perspective view of the solder strip manufacturing apparatus in this embodiment at step S24;

FIG. 13 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. 14 is a perspective view of a set of clamping mechanism and rotating mechanism in this embodiment, wherein the clamping mechanism rotates 90 degrees;

FIG. 15-1 is a schematic diagram of step S1 in an embodiment of the method of the present invention for producing a solar cell string;

FIG. 15-2 is a schematic side view of the cell of FIG. 15-1;

fig. 16 is a schematic diagram of a method step S22 of manufacturing a solar cell string according to the present embodiment;

fig. 17 is a schematic diagram of a method step S23 of manufacturing a solar cell string according to the present embodiment;

fig. 18 is a schematic diagram of a method step S24 of manufacturing a solar cell string according to the present embodiment;

fig. 19-1 is a schematic diagram of a method step S25 of manufacturing a solar cell string according to the present embodiment;

FIG. 19-2 is a side view of the cell and solder ribbon assembly of FIG. 19-1;

fig. 20-1 is a schematic diagram of a method step S32 of manufacturing a solar cell string according to the present embodiment;

FIG. 20-2 is a schematic side view of the battery string of FIG. 20-1;

FIG. 21-1 is a partial schematic view of a battery string according to this embodiment;

FIG. 21-2 is a schematic side view of the battery string of FIG. 21-1;

FIG. 22 is a schematic structural view of a single cell in this embodiment;

FIG. 23 is a schematic structural view of a solder strip feeding mechanism in the prior art;

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; 1600. an X' direction moving axis; 2000. arranging stations; 3000. a battery piece supply device; 4000. a welding station; 5000. a first transmission device; 6000. a second transmission device; 7000. a third transmission device; 7100. a Y-direction moving axis; 7200. a Z-direction moving axis; 8000. a frame; 9000. a solder strip feeding mechanism;

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; 3. a clamping unit; 31. a clamping jaw; 4. and clamping the cylinder.

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.

Referring to fig. 1-1 to 3, an apparatus for producing solar cell strings is configured to simultaneously produce m sets of cell strings 10, where m =6 is taken as an example, the sets of cell strings 10 are sequentially arranged along an X direction, each set of cell string 10 includes a plurality of cells 1 connected in series along a Y direction through a solder strip set 20, the X direction intersects the Y direction, in this embodiment, the X direction and the Y direction are perpendicular to each other and extend along a horizontal direction, and the number of cells 1 included in each set of cell string 10 can be freely selected according to actual needs.

Specifically, referring to fig. 22, n bars 11 are respectively disposed on the front side and the back side of each cell 1, where n is equal to or greater than 1, where n =12, the extending directions of the n bars 11 are parallel to each other on the same side of the cell 1, and the positions of the bars 11 on the front side and the back side of the cell 1 correspond to each other along the thickness direction of the cell 1. In the above-described battery string 10, the bars 11 on each of the battery pieces 1 extend in the Y direction, so as to be able to correspond one-to-one with the solder ribbons 211 that also extend in the Y direction.

Specifically, the apparatus for manufacturing a solar cell string includes a rack 8000, and a solder strip preparing device 1000, a cell sheet supplying device 3000, a first transferring device 5000, a second transferring device 6000, a third transferring device 7000, and the like mounted on the rack 8000. 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. 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 7000 is used for transferring the prepared solder ribbon group 20 from the solder ribbon preparation device 1000 to the arrangement station 2000; the first transfer device 5000 is used to transfer the battery string 10 to be welded from the arranging station 2000 to the welding station 4000, and the first transfer device 5000 is thereby capable of transferring the finished welded battery string 10.

In this embodiment, the first conveying device 5000 and the second conveying device 6000 both use a conveyor belt. The second transfer device 6000 arranges the m battery pieces 1 in the X direction at a time. Correspondingly, the solder ribbon groups 20 prepared by the solder ribbon preparation apparatus 1000 include m groups arranged at intervals along the X direction, and each group of solder ribbon groups 20 includes n solder ribbons 211 parallel to each other and extending along the Y direction. So, at arrangement station 2000 department, m battery pieces 1 and m position one-to-one of group's welding strip group 20, and the position one-to-one of n welding strip 211 in every group welding strip group 20 and the n bars 11 on the battery piece 1, every welding strip 211 can correspond and set up on a bar 11, realizes the interconnect of battery piece 1 and welding strip group 20. Further, the solder ribbon preparing apparatus 1000 is located in the Y direction of the arranging station 2000, the arranging station 2000 is located in the Y direction of the welding station 4000, and the first transfer apparatus 5000 is capable of transferring the battery string 10 in the reverse direction of the Y direction.

For the third transfer device 7000, it specifically includes a Y-direction moving shaft 7100 and a Z-direction moving shaft 7200, wherein the Y-direction moving shaft 7100 can move the solder ribbon group 20 in the Y-direction, and the Z-direction moving shaft 7200 can move the solder ribbon group 20 in the Z-direction, i.e. the upward direction, so that the solder ribbon group 20 can be precisely placed at the placement station 2000.

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, a rotating mechanism 1500, and a transfer mechanism.

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.

Referring to fig. 11 and 14, as can be seen from the above, after 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 and do not deviate 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.

In addition, it should be noted that m groups of solder ribbon groups 20 extending along the Y direction obtained by cutting and rotating directly may not completely correspond to the positions of m battery pieces 1 arranged along the X direction, therefore, the solder ribbon preparation apparatus 1000 further comprises a transfer mechanism, which specifically comprises an X ' direction moving shaft 1600 extending along the X ' direction, a clamping mechanism 1400 is disposed below the rotating mechanism 1500, the rotating mechanism 1500 is connected to the X ' direction moving shaft 1600 through a mover and can slide along the X ' direction moving shaft 1600, so that before the rotating mechanism 1500 drives the clamping mechanism 1400 to rotate, the transfer mechanism can first drive each group of clamping mechanisms 1400 to slide to the position corresponding to the battery piece 1, so that the clamping mechanism 1400 can be directly matched with the battery piece 1 in the X ' direction after rotating, and each solder ribbon 211 can also correspond to the position of the grid 11 on the battery piece 1, the equipment is more convenient and reliable to operate. In addition, the transfer mechanism disperses the clamping mechanisms 1400 in the direction of the rotation front edge X, so that mutual interference of a plurality of clamping mechanisms 1400 in the rotation process can be avoided, and smooth operation of equipment is ensured.

It should be noted that in other embodiments, for example, in a scenario limited by factory space, the X' direction may not be parallel to the X direction. In this case, the solder ribbon preparation apparatus 1000 is further provided with a rotation mechanism for rotating the X '-direction moving shaft 1600 extending in the X' -direction to extend in the X-direction. Specifically, after m sets of solder strip sets 20 extending in the X ' direction are prepared, the rotating mechanism drives the X ' to integrally rotate toward the moving shaft 1600, so that all the clamping mechanisms 1400 connected to the X ' on the moving shaft 1600 also integrally rotate, the m sets of solder strip sets 20 are all converted into X-direction extensions, and the m sets of solder strip sets 20 are arranged in the X direction, and then the rotating mechanism 1500 can drive the clamping mechanisms 1400 to rotate, so that the m sets of solder strip sets 20 are all converted into Y-direction extensions.

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. The X '-direction moving shaft 1600, the Y-direction moving shaft 7100 and the Z-direction moving shaft 7200 are connected in pairs, so that the rotating mechanism 1500 and the clamping mechanism 1400 connected to the X' -direction moving shaft 1600 can reach each position in the spatial range spanned by the three moving shafts, and the accurate pairing of the solder strip group 20 and the battery piece 1 is realized.

Referring to fig. 15-1 to 21-2, which are schematic process diagrams of the method for producing a solar cell string in the present embodiment, only m =3 cells 1 are illustrated here for simplicity, but it should be understood that any value of m does not affect the basic principle of the method. The specific steps of the method for producing a solar cell string according to the present embodiment will be described below with reference to fig. 1-1 and 4 to 10:

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;

s21, the tape drawing mechanism 1200 simultaneously draws n solder strip 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 2 and respectively clamp part of the solder strip 2, at this time, all the clamping jaws 31 extend in the X direction, and each set of clamping mechanisms 1400 is located between two sets of cutting mechanisms 1300;

s22, cutting off the solder strip 2 at the corresponding position by all the cutting mechanisms 1300 to obtain n original solder strips 21 extending along the X direction, and further obtain m groups of solder strip groups 20, where each group of solder strip groups 20 includes n solder strips 211 extending along the X direction, each solder strip 211 is held by one holding unit 3, and each group of solder strip groups 20 is held by one holding mechanism 1400;

s23, the transfer mechanism disperses the m groups of clamping mechanisms 1400 along the X direction, that is, disperses the m groups of solder strip groups 20 along the X direction, so that two groups of solder strip groups 20 adjacent to each other along the X direction are away from each other;

s24, 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;

s25 and the third transferring device 7000 transfer all the clamping mechanisms 1400 to the arranging station 2000, and arrange m prepared solder strip sets 20 extending in the Y direction above the m battery slices 1, respectively, where each solder strip set 20 corresponds to one battery slice 1, and a part of each solder strip 211 is located above the battery slice 1, and another part of each solder strip exceeds the edge of the battery slice 1 and extends outward in the Y direction;

s31, the first conveying device 5000 conveys the arranged m battery pieces 1 and the m groups of solder strip groups 20 in the reverse direction of the Y direction for a short distance, so that the m battery pieces 1 leave the arrangement station 2000, and at least part of the solder strip groups 20 located outside the battery pieces 1 are still located at the arrangement station 2000;

s32, the second conveying device 6000 arranges new m battery pieces 1 above the m groups of solder strip groups 20 located at the arrangement station 2000, respectively, to form m groups of unwelded battery strings 10, the plurality of battery pieces 1 in each group of battery strings 10 are arranged in sequence along the Y direction, and in two adjacent battery pieces 1 along the Y direction, each group of solder strip groups 20 is located above the previous battery piece 1 and below the next battery piece 1, respectively;

repeating the steps S21 to S32 until each group of unwelded battery strings 10 contains k battery pieces, wherein k is more than or equal to 3, and then executing the step S4;

s4, the first conveying device 5000 conveys the m groups of unwelded battery strings 10 to the welding station 4000 in the reverse direction of the Y direction, and welds the welding strip group 20 to the battery plate 1 at the corresponding position, wherein the m groups of battery strings 10 can be welded simultaneously or individually, and the welding mode includes, but is not limited to, infrared welding, hot air welding, contact welding, electromagnetic induction welding, etc.

After step S25, the third transfer device 7000, the rotation mechanism 1500, and the transfer mechanism can return the empty gripper 1400 to the position where the gripper 1400 is located in step S20, and perform the next round of operation.

In summary, compared with the prior art, the equipment and the method for producing the solar cell strings provided by the invention do not need multiple groups of welding strip preparation devices, and can simultaneously feed materials for producing multiple groups of cell strings by using one group of welding strip preparation device 1000, so that the cost and the floor area are greatly reduced, the labor and time cost for later use and maintenance can be greatly reduced, and the production efficiency is improved.

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

1. A method of producing a solar cell string comprising at least two cells, characterized in that the method comprises the steps of:

2. The method of claim 1, wherein the steps S2 and S3 are repeated until each group of the unsoldered string contains k pieces, k ≧ 3, and the step S4 is performed.

3. The method for producing a solar cell string according to claim 1, wherein in step S2, a raw solder ribbon extending in the X 'direction is cut and divided into m solder ribbons, each of which extends in the X' direction; and rotating the extending direction of the welding strip to the Y direction to prepare the welding strip extending along the Y direction.

4. The method for producing a solar cell string according to claim 3, wherein in the step S2, a plurality of the raw solder strips extending in the X' direction are simultaneously cut to form m sets of solder strips including a plurality of the solder strips, and the solder strips of each set of solder strips are simultaneously rotated to extend in the Y direction.

5. The method for producing the solar cell string as claimed in claim 1, wherein the cell string is transported to the soldering station by a first transporting device in the Y direction in the step S4.

6. The method for producing a solar cell string as claimed in claim 1, wherein in the step S1, the cell sheet is transported from the cell sheet supplying device by a second transporting device in the X direction.

7. The method for producing a solar cell string according to claim 3, wherein the rotated solder ribbons are respectively transferred to the positions of the corresponding cell pieces by a third transfer device.

8. The method for producing a solar cell string according to claim 1, wherein in the step S4, m groups of the cell strings are simultaneously or individually soldered.

9. 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 8, characterized by comprising:

the battery piece supply device is used for supplying the battery pieces;

10. The apparatus for producing a solar cell string according to claim 9, wherein the solder ribbon preparation device includes: the welding strip winding mechanism is used for winding a welding strip material on the welding strip winding mechanism;

the clamping mechanism is used for clamping the welding strip;