CN109623218B - Solar cell welding machine - Google Patents

Abstract

The invention discloses a solar cell welding machine which comprises a machine base, a conveying component, a first welding strip feeding device, a second welding strip feeding device, a cell loading and unloading device, an interconnection welding device and a confluence welding device, wherein the machine base is provided with a sheet laying station, a waiting station, an interconnection welding station and a confluence welding station, the conveying component enables a plurality of solar cells to be sequentially conveyed to the interconnection welding station through the sheet laying station, the first welding strip feeding device conveys a first welding strip to the sheet laying station, the second welding strip feeding device conveys a plurality of second welding strips to the waiting station and the sheet laying station, the cell loading and unloading device conveys the solar cells to the sheet laying station, the interconnection welding device welds the solar cells to form a plurality of interconnected solar cell strings, the confluence welding device welds the solar cell interconnection plate, simultaneous welding of the solar cell strings and automatic welding of the solar cell interconnection plate are realized, the production efficiency is improved, and the conversion efficiency of the photovoltaic component is improved.

Description

Solar cell welding machine

Technical Field

The invention relates to the technical field of solar cell welding, in particular to a solar cell welding machine.

Background

Solar energy is a renewable clean energy source, solar energy is utilized to generate electricity, and people are increasingly paid attention to and favour the solar energy, and although solar cell strings can be automatically welded by a string welding machine at present, in the prior art, only single string welding can be realized, and the confluence parallel welding needs manual welding by workers, so that the production efficiency is low.

Disclosure of Invention

Aiming at the defects of the traditional solar cell serial welding machine, the applicant provides a solar cell welding machine capable of simultaneously realizing the welding of multiple strings of solar cells, and a first welding strip can be welded among the multiple strings of solar cells to form an interconnected cell panel so as to improve the overall stability of a solar cell product. The welding mode needs to complete the arrangement of the second welding strips and the first welding strips among the plurality of battery pieces before welding, and the second welding strips, the first welding strips and the battery pieces are in a crossed and overlapped relation, so that the structure is more complex than that of the existing single-string battery string. Therefore, the existing solar cell string welding machine cannot meet the production requirement of the interconnected cell panels.

The invention mainly aims to provide a solar cell welding machine, which aims to solve the technical problems that the production efficiency of the existing solar cell welding machine is low and the production requirement of interconnected cell plates cannot be met.

In order to achieve the above object, the present invention provides a solar cell welding machine, comprising:

The machine base is provided with a sheet laying station, a waiting station, an interconnection welding station and a confluence welding station which are sequentially arranged along the left-right direction, and a plurality of preparation stations arranged between the waiting station and the interconnection welding station;

The conveying assembly is arranged on the base and comprises a transmission welding table device, the transmission welding table device comprises a first conveying device, the first conveying device comprises a first conveying belt, the first conveying belt is used for enabling a plurality of solar cells to be conveyed to the interconnection welding station through the sheet laying station in sequence, and the solar cells can be correspondingly stagnated at the sheet laying station, the waiting station, the preparation station and the interconnection welding station;

The first welding strip feeding device is arranged on the base and used for conveying the first welding strip extending forwards and backwards to a first conveying belt at a sheet laying station;

The second welding strip feeding device is arranged on the machine base and is used for conveying a plurality of second welding strips extending leftwards and rightwards to upper welding surfaces of a plurality of solar cells at a waiting station and a first conveyor belt at a laying station;

The battery piece feeding and discharging device is arranged on the base, and is used for conveying a plurality of solar battery pieces which are spaced in the front-back direction to a first conveyor belt at the piece laying station and for enabling lower welding surfaces of the plurality of solar battery pieces to be in pressure connection with the first welding belt and the plurality of second welding belts;

The interconnection welding device is arranged on the base and is used for performing interconnection welding on the first welding strip, the plurality of second welding strips and the corresponding plurality of solar cells at the interconnection welding station to form a plurality of interconnected solar cell strings; and

The converging welding device is arranged on the base and is used for converging and welding a plurality of interconnected solar cell strings conveyed to the converging welding station to form a cell interconnecting plate;

The conveying assembly is further used for conveying the plurality of interconnected solar cell strings formed by welding at the interconnected welding station to the converging welding station, and the plurality of interconnected solar cell strings can be correspondingly stagnated at the converging welding station.

Optionally, the first solder strip feeding device includes:

the first welding strip pickup piece is movably arranged on the base and provided with a movable stroke along the front and back direction and the up and down direction and is used for picking up the first welding strip; and

The first driving device is arranged on the base and is used for driving the first welding strip pickup piece to move forwards and backwards and upwards and downwards so that the first welding strip is conveyed to a first conveying belt at a sheet laying station.

Optionally, the second solder strip feeding device includes:

The second welding strip clamp is movably arranged on the base and provided with a left-right movable stroke for clamping a plurality of second welding strips; and

The second driving device is arranged on the base and drives the second welding strip clamp to move left and right, and the second driving device is used for enabling a plurality of second welding strips to be conveyed to upper welding surfaces of a plurality of solar cells at a waiting station and a first conveyor belt at a spreading station.

Optionally, the frame is further formed with a material taking position and a material discharging position corresponding to the solar cell, and the cell loading and unloading device includes:

The battery piece material box feeding and discharging device is arranged on the base and is used for conveying the solar battery pieces in the battery piece material boxes to the material taking position;

The battery piece transmission device is arranged on the base and is used for transmitting the plurality of solar battery pieces at the material taking position to the material discharging position; and

And the battery piece blanking device is arranged on the base and is used for positioning and transferring the plurality of solar battery pieces positioned at the blanking position for the second time to the first conveyor belt at the piece laying station.

Optionally, the feeding and discharging device of the battery piece material box comprises:

The second conveying device is arranged on the base, a plurality of second conveying belts which are arranged at intervals along the front-back direction and extend along the left-right direction are arranged on the second conveying device, a sheet feeding conveying channel and/or an empty box conveying channel which extend along the left-right direction are formed between two adjacent second conveying belts, a plurality of sheet feeding conveying channels are arranged, the sheet feeding conveying channels are used for conveying the battery sheet material boxes along the front-back direction, and the empty box conveying channels are used for moving out the empty battery sheet material boxes;

the jacking device is arranged below the material taking position, is provided with an upward and downward movable stroke, and respectively penetrates through gaps between the two corresponding second conveyor belts upwards and is used for respectively jacking the battery pieces in the battery piece material boxes below the material taking position to the material taking position; and

And the empty box transferring assembly is used for transferring a plurality of empty battery piece material boxes positioned on the piece feeding conveying channel to the empty box conveying channel.

Optionally, the battery piece transmission device includes:

The third conveying device is arranged on the machine base and comprises a material taking device and a third conveying belt which moves forwards and backwards, a conveying path of the third conveying belt passes through the material discharging position, the material taking device is used for conveying the plurality of solar cells at the material taking position to the initial position of the third conveying belt, and the third conveying belt is used for conveying the plurality of solar cells at the initial position to the material discharging position; and

The detection device is arranged on the machine base and comprises a positioning component and/or a quality detection component, the positioning component is used for acquiring relative position information of the solar cells on the third conveyor belt, the relative position information comprises relative position data among a plurality of solar cells, and the quality detection component is used for acquiring abnormal information of the solar cells on the third conveyor belt.

Optionally, the battery piece blanking device includes:

The movable seat is movably arranged on the stand;

The plurality of material sheet pick-up pieces are movably arranged on the movable seat, are arranged side by side along the front-back direction and are respectively used for picking up one solar cell;

The first driving system is arranged on the base, is in driving connection with the movable seat and is used for driving the movable seat to move on the base so as to realize that the plurality of material sheet pick-up pieces respectively feed the plurality of solar battery sheets at the feeding position; and

The second driving system is arranged on the movable seat, is in driving connection with the material sheet pick-up pieces and is used for driving the material sheet pick-up pieces to move on the movable seat respectively and adjusting the relative positions among the solar cell sheets.

Optionally, the transmission welding table device further includes a heating device and a cooling device, the transmission welding table device corresponds to a plurality of temperature zones formed at the interconnection welding station and distributed along the left-right direction, the plurality of temperature zones include a preheating temperature zone, a welding temperature zone and a cooling temperature zone, the heating device is mounted to the stand and is arranged corresponding to the preheating temperature zone and/or the welding temperature zone and is used for heating solar cells passing through the preheating temperature zone and/or the welding temperature zone, and the cooling device is mounted to the stand and is arranged corresponding to the cooling temperature zone and is used for cooling the welded solar cells; and/or the number of the groups of groups,

The interconnection welding device comprises a welding box, the welding box is movably arranged on the machine base so as to have an upper movable stroke and a lower movable stroke, the welding box is provided with an opening arranged downwards, an infrared welding lamp tube and a thimble are arranged in the welding box, the infrared welding lamp tube is used for radiating downwards to emit heat, the thimble can be arranged below the infrared welding lamp tube in an up-and-down movable mode, and the thimble is used for enabling the first welding strip and the second welding strips to be attached to and heated to be mutually fixed, so that electric connection is realized.

Optionally, the conveying assembly further comprises a fourth conveying device, wherein the fourth conveying device is used for conveying the plurality of interconnected solar cell strings formed by welding at the interconnection welding station to the confluence welding station, and the plurality of interconnected solar cell strings can be correspondingly stagnated at the confluence welding station;

The confluence welding device includes:

The bus welding strip conveying device is used for conveying bus welding strips extending in the front-back direction to the bus welding stations, and enabling the bus welding strips to be in lap joint with bus welding leads at the left end and the right end of the plurality of interconnected solar cell strings; and

And the confluence welding assembly is arranged on the base and used for fixing the confluence welding strip and the confluence welding lead wire in a welding way so as to realize electric connection.

Optionally, the converging welding device further includes a cutting device, where the cutting device is disposed on the stand and between the interconnecting welding station and the converging welding station, and is configured to cut a plurality of continuous interconnected solar cell strings into solar cell strings with the interconnected plate specifications.

According to the technical scheme provided by the invention, the first welding strip feeding device is used for feeding the welding strips among the solar cell strings, the second welding strip feeding device is used for feeding the welding strips among the solar cell sheets in the solar cell strings, the battery sheet feeding and discharging device is used for feeding the solar cell sheets, the paved first welding strips, the paved second welding strips and the paved solar cell sheets are conveyed to the interconnection welding stations, the interconnection welding device is used for welding and fixing the metal grid lines on the first welding strips, the paved second welding strips and the solar cell sheets, so that electric connection is realized, a plurality of interconnected solar cell strings are formed, the solar cell sheets arranged side by side can easily realize very small stable repeatability gaps, such as 0.5mm, and then the solar cell sheets are subjected to bus welding through the bus welding device at the bus welding stations, so that the solar cell sheets are formed, and the solar cell strings are welded automatically and integrally, and the solar cell assembly is compact in production and the solar module is realized, and the solar cell assembly is very compact in production and the aspect of welding and the interconnection welding process is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic plan view of a battery interconnect board produced by a solar wafer soldering machine according to the present invention;

FIG. 2 is a schematic view, partially in section, of the cell interconnect panel of FIG. 1;

fig. 3 is a schematic perspective view of an embodiment (angle) of a solar cell welding machine according to the present invention;

FIG. 4 is a schematic perspective view of an embodiment (at another angle) of the solar cell welding machine of FIG. 3;

FIG. 5 is a schematic perspective view of the assembly (partial structure) of the first and second ribbon feeding devices of FIG. 3;

FIG. 6 is a schematic perspective view of the second ribbon feeding device (partial structure) of FIG. 5;

FIG. 7 is a schematic perspective view of the first ribbon feeding device (partial structure) of FIG. 5;

Fig. 8 is a schematic perspective view of a loading and unloading device (angle) of the battery pack in fig. 3;

fig. 9 is a schematic perspective view of a loading and unloading device (another angle) of the battery sheet material box in fig. 3;

FIG. 10 is a schematic perspective view of the second conveyor and jacking device of FIG. 9 assembled;

FIG. 11 is a schematic perspective view of the jacking device of FIG. 10;

FIG. 12 is a schematic perspective view of the hollow box transfer assembly of FIG. 9;

Fig. 13 is a schematic perspective view of the battery sheet conveying device in fig. 3;

fig. 14 is a schematic perspective view of the battery plate blanking device in fig. 3;

FIG. 15 is a schematic perspective view of the transfer table apparatus (at an angle) of FIG. 3;

FIG. 16 is a schematic perspective view of the transfer table apparatus (at another angle) of FIG. 3;

FIG. 17 is a schematic perspective view of the bus bar welding device of FIG. 3;

Fig. 18 is a schematic perspective view of the transfer mechanism of fig. 17.

Reference numerals illustrate:

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The solar cell welding machine is mainly used for welding a plurality of solar cells through welding strips, the solar cells are required to be sequentially transmitted to a production line before welding so as to be arranged according to the required solar cell specification, the welding strips are correspondingly arranged at the same time, and finally the solar cells are welded by adopting a welding device. However, the existing solar cell welding machine can only realize automatic welding of single-string solar cells, so that the production efficiency is low.

In view of this, the present invention provides a solar cell welding machine, and fig. 3 to 18 are schematic structural diagrams of an embodiment of the solar cell welding machine provided by the present invention, and by using the solar cell welding machine 100 provided by the present invention, a cell interconnection plate a can be produced, wherein the cell interconnection plate a please refer to fig. 1 and 2, the cell interconnection plate comprises a plurality of solar cells b, the solar cells b are connected in series by inter-sheet welding strips to form a solar cell string a, the solar cell strings a are connected in parallel by inter-string welding strips to form a plurality of interconnected solar cell strings a, and then two ends of the plurality of interconnected solar cell strings a are subjected to fusion welding to form a cell interconnection plate a.

It should be noted that, in the technical solution provided in the present invention, only a part of the structure of the solar cell welding machine 100 may be included, or all structures of the solar cell welding machine 100 may be included, so as to adjust a product, which should belong to the content of the solution provided in the present invention, for example, only a plurality of solar cell strings a may be produced at the same time, the solar cell strings a are not interconnected with each other, in the structure of the solar cell string a, a plurality of solar cell sheets b may overlap with each other, or may have a certain gap therebetween, or may be a plurality of solar cell strings a interconnected with each other to form an interconnection plate between a plurality of solar cell strings a interconnected with each other, or the interconnection plate may not need to overlap between two solar cell sheets b, and the production line formed by the various cases of the solar cell welding machine 100 and the product produced by the production line all belong to the scope of the present invention.

Referring to fig. 3 to 4, the solar cell welding machine includes a frame 1, a conveying component 2, a first welding strip feeding device 3, a second welding strip feeding device 4, a cell loading and unloading device 5, an interconnection welding device 6 and a confluence welding device 7, wherein the frame 1 has a spreading station 11, a waiting station 12, an interconnection welding station 14, a confluence welding station 15 and a plurality of preparation stations 13 disposed between the waiting station 12 and the interconnection welding station 14, the conveying component 2 is disposed on the frame 1, the conveying component 2 includes a conveying welding station device 2a, the conveying welding station device 2a includes a first conveying device, the first conveying device includes a first conveying belt 21, the first conveying belt 21 is used for conveying a plurality of solar cells b to the interconnection welding station 14 sequentially through the spreading station 11, the solar cell b can be correspondingly stagnated at the position of the sheet laying station 11, the waiting station 12, the preparation station 13 and the interconnection welding station 14, the first welding strip feeding device 3 is arranged on the machine base 1 and is used for conveying the first welding strips c which extend forwards and backwards to the first conveying belt 21 at the sheet laying station 11, the second welding strip feeding device 4 is arranged on the machine base 1 and is used for conveying the second welding strips d which extend leftwards and rightwards to the upper welding surfaces of the solar cell b at the waiting station 12 and the first conveying belt 21 at the sheet laying station 11, the cell feeding and discharging device 5 is arranged on the machine base 1 and is used for conveying the solar cell b which are spaced forwards and backwards to the first conveying belt 21 at the sheet laying station 11, the transfer assembly 2 is further configured to transfer the plurality of interconnected solar cell strings a formed by welding at the interconnection welding station 14 to the position of the bus welding station 15, and enable the plurality of interconnected solar cell strings a to be correspondingly stagnated at the position of the bus welding station 15.

In the technical scheme provided by the invention, the first welding strip feeding device 3 realizes the feeding of welding strips among a plurality of solar cell strings a, the second welding strip feeding device 4 realizes the feeding of welding strips among solar cell sheets b in the solar cell strings a, the cell sheet feeding and discharging device 5 realizes the feeding of a plurality of the solar cell sheets b, the paved first welding strip c, a plurality of second welding strips d and a plurality of solar cell sheets b are transmitted to the interconnecting welding station 14, the interconnecting welding device 6 welds and fixes metal grid lines on the first welding strip c, the plurality of second welding strips d and the plurality of solar cell sheets b to realize electric connection, the solar cell strings a are formed, the solar cell sheets b arranged side by side can easily realize a very small stable repeatability gap, such as 0.5mm, and then are subjected to confluence welding through the confluence welding device 7 positioned at the confluence welding station 15, and after the welding is completed, the cell interconnection plate A is formed, so that the simultaneous welding of the solar cell strings a and the automatic welding of the solar cell interconnection plate A are realized, the production efficiency is improved, the sequencing and confluence welding actions and processes of the solar cell strings a are simplified, and on the other hand, the solar cell sheets b are arranged very compactly, and the overall conversion efficiency of the photovoltaic module is improved.

It should be noted that, in the present embodiment, the frame 1 is the installation standard of the solar cell welding machine 100, and a spreading station 11, a waiting station 12, an interconnection welding station 14, a confluence welding station 15, and a plurality of preparation stations 13 disposed between the waiting station 12 and the interconnection welding station 14 are correspondingly formed on the frame 1, each solar cell b may be sequentially sent to the interconnection welding station 14 through the spreading station 11, and the first conveyor belt 21 is intermittently moved, and each solar cell b may be correspondingly stopped at the spreading station 11, the waiting station 12, the preparation station 13, the interconnection welding station 14, and the confluence welding station 15, so that feeding and welding operations may be performed at the instant of intermittent conveyance, so that the whole solar cell welding machine 100 may continuously operate, and a fully automatic operation may be realized.

In addition, in this embodiment, the number of the solar cells b at each station is not limited, and the number of the metal grid lines on each solar cell b and the number of the corresponding second solder strips d are not limited, for example, 2,3,4,5, etc. solar cells b may be laid in the front-back direction at each station, and the total number of the corresponding second solder strips d may be 2,3, 5, etc. according to the specification and the layout of the solar cell module, and the number of the metal grid lines on each solar cell b may be 2,3, 5, etc. and the number of the corresponding second solder strips d may be 2,3, 5, etc. and may be superimposed on the plurality of solar cells b, for example, at any station, the number of the solar cells b may be N, and the number of the metal grid lines on the solar cell b may be M.

Referring to fig. 5 to 7, in the production process, first, the first solder strip feeding device 3 conveys the first solder strip c extending in the front-rear direction onto the first conveyor belt 21 at the laying station 11 according to a preset time interval and/or distance interval, then the second solder strip feeding device 4 and the battery piece feeding and discharging device 5 alternately perform the conveying action on the second solder strip d and the laying action on the solar battery piece b, so that the solar battery piece b and the plurality of second solder strips d extending in the left-right direction are sequentially stacked, and thus the laying work on the first solder strip c and the plurality of second solder strips d is completed, and the number and the arrangement of the solar battery pieces b are determined according to the specifications of the produced solar battery assembly.

First, the first solder strip feeding device 3 includes a first solder strip pick-up member 31 and a first driving device 32, where the first solder strip pick-up member 31 is movably mounted on the base 1 and has a movable stroke along a front-back direction and an up-down direction for picking up the first solder strip c, and the first driving device 32 is provided on the base 1 and is used for driving the first solder strip pick-up member 31 to move along the front-back direction and the up-down direction so that the first solder strip c is conveyed onto the first conveyor belt 21 at the die-laying station 11, and thus the first solder strip c is conveyed onto the first conveyor belt 21 at the die-laying station 11 in a simple manner, and by adjusting the conveying frequency and the conveying position, the setting position and the interval of the first solder strip c at the battery interconnection plate a can be adjusted.

The first welding strip feeding device 3 further comprises a traction frame 33, the traction frame 33 is arranged on the machine base 1 and is arranged above the sheet laying station 11, a limiting groove with an upward opening is formed in the traction frame 33, the limiting groove is long and extends in the front-back direction to be used for bearing a first welding strip c to be fed, the first welding strip pick-up piece 31 extends in the front-back direction and is correspondingly arranged above the limiting groove, the first welding strip pick-up piece 31 has a movable stroke in the front-back direction and the up-down direction, the second driving device 42 drives the first welding strip pick-up piece 31 to move in the front-back direction and the up-down direction, so that the stroke of the first welding strip c in the limiting groove is reduced to be conveyed onto the first conveyor belt 21 at the sheet laying station 11, and the conveying efficiency of the first welding strip c is improved.

In addition, in order to process the solder strip raw material into the first solder strip c, the first solder strip feeding device 3 further includes a traction clamp 34, a traction driving device 35, and a cutting member 36, where the traction clamp 34 is movably mounted on the traction frame 33 in a front-rear direction, the traction clamp 34 is used to clamp a free end of the solder strip raw material, the traction driving device 35 is in driving connection with the traction clamp 34, so as to drive the traction clamp 34 to move between a starting position and a terminating position of the first solder strip c, so that the free end of the solder strip raw material is pulled from the starting position to the terminating position, and the cutting member 36 is used to cut the solder strip raw material to form the first solder strip c, so that a penetrating solder strip is formed by a simple manner, and is matched with a layout mechanism of the first solder strip c, so as to improve production efficiency.

Specifically, the second welding strip feeding device 4 includes a second welding strip clamp 41 and a second driving device 42, where the second welding strip clamp 41 is movably mounted on the base 1 and has a movable travel along a left-right direction to clamp a plurality of second welding strips d, and the second driving device 42 is disposed on the base 1 and drives the second welding strip clamp 41 to move along the left-right direction, so that the plurality of second welding strips d are conveyed to the upper welding surfaces of the plurality of solar cells b at the waiting station 12 and the first conveyor belt 21 at the laying station 11, and thus, the plurality of second welding strips d extending in the left-right direction are conveyed to the upper welding surfaces of the plurality of solar cells b at the waiting station 12 and the first conveyor belt 21 at the laying station 11 at each time, thereby improving the production efficiency.

Further, the second welding strip d has a discharging position, a waiting position and a working position where the second welding strip d is laid on the first welding strip c, the second welding strip clamp 41 includes a left clamp 411 and a right clamp 412, the second driving device 42 includes a left driving part 421 and a right driving part 422, the left driving part 421 is in driving connection with the left clamp 411 for driving the left clamp 411 to move between the discharging position and the waiting position, so that the plurality of second welding strips d are transported from the discharging position to the waiting position, the right driving part 422 is in driving connection with the right clamp 412 for driving the right clamp 412 to move between the waiting position and the working position, so that the plurality of second welding strips d are transported from the waiting position to the working position, and during production, the left clamp 421 is used for transporting the finished second welding strip d to the waiting position and then can return to the left, the right clamp 412 is used for transporting the finished second welding strip d to the waiting position, and the second welding strip d is cut off by the second clamp 35, and the working position is not required to be further processed, and the working efficiency is further improved.

The battery piece loading and unloading device 5 is configured to transport a plurality of solar battery pieces b spaced in front-back direction onto the first conveyor belt 21 at the sheet laying station 11, and is configured to press-contact the lower welding surfaces of the plurality of solar battery pieces b with the first welding belt c and the plurality of second welding belts d, specifically referring to fig. 1 and 7 to 16, in this embodiment, a material taking position 5a and a material unloading position 5b for the corresponding solar battery pieces b are further formed on the base 1, the battery piece loading and unloading device 5 includes a battery piece box loading and unloading device 51, a battery piece conveying device 52 and a battery piece unloading device 53, the battery piece box loading and unloading device 51 is provided on the base 1, the battery piece conveying device 52 is provided on the base 1, for conveying the solar battery pieces b in the plurality of battery piece boxes to the material taking position 5a, for transferring the plurality of solar cells b at the material taking position 5a to the material discharging position 5b, the cell material discharging device 53 is arranged on the base 1, for positioning and transferring the plurality of solar cells b after the first positioning at the material discharging position 5b to the first conveyor belt 21 at the sheet laying station 11 for the second time, the material taking, positioning and material discharging of the solar cells b are realized by the cell material box material feeding and discharging device 51, the cell material transferring device 52 and the cell material discharging device 53, the automatic production is realized, the production efficiency is improved, in addition, the first positioning is mainly to perform the rough positioning of the solar cells b as positioning references, then the rest of the plurality of solar cells b are positioned for the second time as references, and the second positioning is accurate positioning, and after the second positioning is finished, the position positioning among the plurality of solar cells b is finished.

Referring to fig. 8 to 12, the feeding and discharging device 51 for a battery sheet cartridge includes a second conveying device 51a, a lifting device 51b and an empty box transferring assembly 51c, the second conveying device 51a is disposed on the base 1, a plurality of second conveying belts disposed along a left-and-right direction and along a front-and-rear direction at intervals are disposed on the second conveying device 51a, a feeding sheet conveying channel 510 and/or an empty box conveying channel 511 extending along a left-and-right direction is formed between two adjacent second conveying belts, the feeding sheet conveying channel 510 is provided with a plurality of feeding sheet conveying channels 510, the feeding sheet conveying channel 510 is used for moving out empty battery sheet cartridges along a front-and-rear direction, the lifting device 51b is disposed under the base 1, the lifting device 51b has an upward and downward moving stroke, the plurality of lifting devices 51b respectively pass through the corresponding second conveying belts upwards, and the empty box conveying channel is disposed under the empty box conveying channel 511, and the feeding sheet conveying assembly is completely removed from the empty box conveying channel 5a to the empty box feeding device 5a, and the empty box feeding device is completely removed from the empty box feeding device is completely.

It should be noted that, when the jacking device 51b mainly jacks up the battery sheet cassettes and the feeding conveyor 510 is provided with a plurality of battery sheet cassettes, one jacking mechanism may be used to jack up a plurality of battery sheet cassettes at the same time, specifically, the jacking portion includes a plurality of jacking blocks 512, the jacking blocks 512 are provided and are respectively provided corresponding to the plurality of feeding conveyor 510 at the material taking station, the jacking device 51b further includes a sliding frame 513, a first longitudinal moving mechanism 514, and a plurality of second longitudinal moving mechanisms 515, where the sliding frame 513 may be movably mounted on the base 1 along the up-down direction, the first longitudinal moving mechanism 514 drives the sliding frame 513 to move along the up-down direction, and the plurality of second longitudinal moving mechanisms 515 respectively drive the plurality of jacking blocks 512 to move along the up-down direction and are mounted on the sliding frame 513, where, the plurality of lifting blocks 512 are respectively configured to lift the corresponding plurality of battery packs to the material taking position 5a, first, the first longitudinal moving mechanism 514 pushes the sliding frame 513 to be movably mounted on the base 1 in an up-down direction, each of the second longitudinal moving mechanisms 515 has a moving stroke of the first longitudinal moving mechanism 514, after the first longitudinal moving mechanism 514 is lifted to a proper position, the plurality of second longitudinal moving mechanisms 515 respectively lift the corresponding battery packs to the material taking position 5a, the lifting speed is fast, the efficiency is high, and the effect is better, in this embodiment, the specific forms of the first longitudinal moving mechanism 514 and the second longitudinal moving mechanism 515 are not limited, for example, all the second longitudinal moving mechanisms 515 may be cylinders or all devices capable of realizing linear driving, are all within the scope of the present invention.

When the battery sheet material box is stably stopped at the material taking station, the jacking device 51b jacks the battery sheet material box to the material taking position 5a, so that the material taking position 5a is set to be a fixed position for rapidly completing material taking, the battery sheet at the uppermost layer in the battery sheet material box is always positioned at the material taking position 5a and is positioned at the same height, so that the material taking can be conveniently and rapidly completed.

When the material taking device takes materials, adhesion phenomenon is easy to occur between adjacent battery pieces, in order to enable each battery piece to be taken once in each battery piece material box, in this embodiment, the material taking device further comprises a blowing component (not shown) mounted to the base 1, two adhered battery pieces are separated by using gas blown out by the blowing component, specifically, the blowing component is provided with blowing holes distributed along the left side and the right side of the material feeding conveying channel 510, the blowing holes are used for blowing air to the battery pieces at the material taking position 5a, so that the material taking device absorbs one battery piece each time, and the position of the blowing holes is approximately equal to the height of the material taking position 5a, so that the blowing is convenient.

In this embodiment, the specific positional relationship between the sheet feeding and conveying path 510 and the empty cassette conveying path 511 is not limited, and may be, for example, vertically distributed, longitudinally distributed, laterally arranged, or arranged side by side, and in this embodiment, the empty cassette conveying path and the sheet feeding and conveying path 510 are arranged in parallel in view of compactness of the structure and convenience in collecting the empty battery sheet cassettes a.

In addition, in this embodiment, the empty battery sheet material boxes need to be lifted up by the lifting plate 518 and then moved onto the empty box conveying channel 511, and the plurality of the feeding channels 510 may share one empty box conveying channel 511, so that all the empty battery sheet material boxes are transferred out of one empty box conveying channel 511, specifically, in this embodiment, the empty box conveying channel is disposed in parallel with the feeding channels 510, the empty box conveying assembly 51c includes a sliding seat 516, a transverse moving mechanism 517, a lifting plate 518 and a third longitudinal moving mechanism 519, the sliding seat 516 may be movably mounted on the base 1 in a left-right direction, the transverse moving mechanism 517 drives the sliding seat 516 to move in the left-right direction, the lifting plate 518 is movably mounted on the sliding seat 516 in an up-down direction, and the third longitudinal moving mechanism 519 drives the lifting plate 518 to move in the up-down direction, wherein the lifting plate 518 is used for lifting and conveying the battery sheet material boxes located on the empty box conveying channel 511 to the empty box conveying channel.

It should be noted that, the movable travel of the sliding seat 516 along the left-right direction may also take into account a plurality of the feeding conveying channels 510, the lateral moving structure and the longitudinal moving structure may be in the form of an oil cylinder, an air cylinder or an electric cylinder, etc., mainly to achieve the freedom degree of the up-down and left-right movement of the lifting plate 518, and the empty box transferring assembly 51c8 may conveniently transfer the empty battery boxes on the plurality of feeding conveying channels 510 to the empty box conveying channels 511 for transmission, so as to have a better effect.

Referring to fig. 13 in detail, the battery piece transporting device 52 includes a third transporting device 52a and a detecting device 52b, the third transporting device 52a is disposed on the base 1, the third transporting device 52a includes a material taking device and a third transporting belt 522 moving in a front-back direction, a transporting path of the third transporting belt 522 passes through the discharging position 5b, the material taking device is configured to transfer the plurality of solar battery pieces b at the material taking position 5a to an initial position of the third transporting belt 522, the third transporting belt 522 is configured to transfer the plurality of solar battery pieces b at the initial position to the discharging position 5b, the detecting device 52b is disposed on the base 1, and includes a positioning component 523 and/or a quality detecting component, the positioning component is configured to obtain relative position information of the solar battery pieces b on the third transporting belt 522, the relative position information includes relative position data between the plurality of solar battery pieces b, and the quality detecting component is configured to obtain abnormal information of the solar battery pieces 522 on the third transporting belt 522.

The detecting device 52b is disposed on the stand 1 and includes a positioning component 523 and/or a quality detecting component, the positioning component 523 is configured to obtain relative position information of the battery pack on the conveying belt, the relative position information includes relative position data between the plurality of solar battery cells b, the relative position data includes vertical intervals, lateral misalignment conditions, angle alignment conditions and the like between the plurality of solar battery cells b, and the battery cell blanking device 53 is configured to obtain the relative position data and adjust positions of the plurality of solar battery cells b according to the relative position data, so that the solar battery cells b at the blanking position 5b meet relevant positioning requirements.

In order to ensure that the solar cells b are accurately positioned, the third conveying device 52a further includes a controller, and the controller is electrically connected with the quality detecting component and the driving piece of the third conveying belt 522 to obtain the initial position information, and controls the driving piece of the third conveying belt 522 to drive the third conveying belt 522 to move according to a preset stroke according to the initial position information, so that the accurate positioning of the solar cells b is ensured, and the product production quality is improved.

The quality detection component is used for acquiring abnormal information of the battery piece on the transmission belt, wherein the abnormal information refers to related information capable of reflecting the quality of the battery piece, such as broken piece condition, size and the like of the solar battery piece b, so that the solar battery piece b with unqualified quality can be identified, the broken solar battery piece b can be replaced before the solar battery piece b is moved onto a production line, the quality of the solar battery piece b conveyed onto the production line is guaranteed to be qualified, repair is avoided, and the production efficiency of the solar battery is improved.

Referring to fig. 14 in detail, the battery piece blanking device 53 includes a movable base 53a, a plurality of piece picking members 53b, a first driving system 53c and a second driving system 53d, where the movable base 53a is movably disposed on the base 1, the piece picking members 53b are movably disposed on the movable base 53a, the piece picking members 53b are disposed side by side in a front-to-back direction, the piece picking members 53b are respectively used for picking up a solar battery piece b, the first driving system 53c is disposed on the base 1 and is in driving connection with the movable base 53a, so as to drive the movable base 53a to move on the base 1, so as to realize that the piece picking members 53b respectively perform blanking on a plurality of solar battery pieces b at the blanking position 5b, and the second driving system 53d is disposed on the movable base 53a and is in driving connection with the piece picking members 53b, so as to respectively drive the piece picking members 53b to respectively perform picking up a solar battery piece b, and simultaneously perform welding process on a plurality of solar battery pieces at the positions of the movable base 53b, thereby realizing that the solar battery pieces are relatively aligned with each other, and simultaneously, the solar battery pieces are well as the solar battery pieces are adjusted.

The first driving system 53c drives the movable seat 53a to move on the base 1, and has a left-right and up-down movement stroke, so as to enable the plurality of web pick-up members 53b to respectively feed the plurality of solar cells b at the feeding position 5b, and the first driving system 53c includes an up-down driving structure and a left-right driving structure, which are all not described in detail herein.

In addition, when the second driving system 53d needs to adjust the relative position requirements between the plurality of solar cells b, in this embodiment, when welding the three solar cell strings a simultaneously, for example, the front solar cell b, the middle solar cell b and the rear solar cell b are included, the middle solar cell b is taken as a reference, the second driving system 53d includes a self-rotating motor 531 driving the middle solar cell b to move, a cylinder moving left and right, a self-rotating motor 531 driving the front solar cell b and the rear solar cell b to move, a first cylinder 532 moving left and right, and a second cylinder 533 moving forward and backward relative to the middle solar cell b, so that the positional relationship between the plurality of solar cells b is adjusted, and when the solar cell b is placed at the laying station 11, the positions between the plurality of solar cells b are already positioned, and when the solar cell b is positioned with the first welding strip c and the second welding strip c, the production efficiency is improved, and the production quality is improved.

Referring to fig. 15 to 16, the transfer soldering station apparatus 2a mainly transfers the solar cells b between different stations, and when the solar cells b are at the interconnection soldering station 14, an auxiliary related heating apparatus 22 and cooling apparatus 23 are needed to provide a soldering environment and process the soldered products, specifically, in this embodiment, the transfer soldering station apparatus 2a further includes a heating apparatus 22 and a cooling apparatus 23, the transfer soldering station apparatus 2a corresponds to a plurality of temperature areas formed at the interconnection soldering station 14 and distributed in a left-right direction, the plurality of temperature areas includes a preheating temperature area 211, a soldering temperature area 212 and a cooling temperature area 213, the heating apparatus 22 is mounted to the base 1 and is disposed corresponding to the preheating temperature area 211 and/or the soldering temperature area 212, the cooling apparatus 23 is mounted to the base 1 and is disposed corresponding to the cooling temperature area 213, and is used to cool the soldered solar cells b.

In the whole solar cell soldering machine 100, a plurality of different temperature areas are formed on the base 1, and the steps of pre-soldering, soldering and heat preservation, and post-soldering cooling are required according to the requirements of the soldering process, in this embodiment, the plurality of temperature areas include a preheating temperature area 211, a soldering temperature area 212, and a cooling temperature area 213, and the transmission soldering station device 2a may sequentially transfer the plurality of solar cells b between the different temperature areas.

In this embodiment, the heating device 22 includes a heating pipe or a heating rod, etc. to heat the solar cell b, so that the interconnection welding device needs to monitor the temperature in the preheating temperature zone 211 and/or the welding temperature zone 212 to obtain the actual temperature in the preheating temperature zone 211 and/or the welding temperature zone 212, and then the actual temperature may be fed back to the heating device 22, so as to adjust the heating power of the heating device 22 to adapt to the requirement of the welding process, and specifically, the transmission welding table device 2a further includes a temperature sensing device mounted to the base 1, where the temperature sensing device is disposed corresponding to the preheating temperature zone 211 and/or the welding temperature zone 212, and is used to monitor the temperature of the preheating temperature zone 211 and/or the welding temperature zone 212.

In the embodiment of the present invention, the specific cooling mode of the cooling device 23 is not limited, for example, a flowing medium cooling mode, such as water cooling, oil cooling, etc., may be adopted, in this embodiment, an air cooling mode is adopted, specifically, the cooling device 23 includes a cooling fan 231, the cooling fan 231 blows cold air, and the solar cell b after welding is cooled by a fan cooling mode, which has a simple structure and is convenient to implement.

The interconnection welding device 6 comprises a lamp welding assembly 61, the lamp welding assembly 61 comprises a welding box, the welding box is movably arranged on the base 1 to have an upper movable stroke and a lower movable stroke, the welding box is provided with an opening arranged downwards, an infrared welding lamp tube 611 and a thimble are arranged in the welding box, the infrared welding lamp tube 611 is used for radiating downwards to emit heat, the thimble can be movably arranged below the infrared welding lamp tube 611, and the thimble is used for enabling the first welding belt c and the second welding belts d to be attached to and heated with each other to be fixed to each other, so that electric connection is realized.

Referring to fig. 17 to 18 in detail, the transfer assembly 2 further includes a fourth transfer device 2b, the fourth transfer device 2b is configured to transfer a plurality of interconnected solar cell strings a formed by welding at the interconnection welding station 14 to the bus welding station 15, and enable the plurality of interconnected solar cell strings a to stagnate at the bus welding station 15 correspondingly, the bus welding device 7 includes a bus strap transfer device and a bus welding assembly 7b, the bus strap transfer device is configured to transfer bus straps extending in a front-back direction to the bus welding station 15, and enable the bus straps to overlap bus welding leads at left and right ends of the plurality of interconnected solar cell strings a, and the bus welding assembly 7b is disposed on the base 1 and is configured to fix the bus straps and the bus welding leads by welding, so as to implement electrical connection.

Firstly, it should be noted that, the cutting device 8 is further disposed between the interconnection welding station 14 and the confluence welding station 15, the cutting device 8 is configured to cut a continuous plurality of interconnected solar cell strings a into the solar cell strings a with the specifications of the interconnection plate, and the required interconnected cell strings with the specifications are directly formed by the cutting action of the cutting device 8, so that the subsequent confluence welding operation is facilitated, the automation operation is realized, and the production efficiency is improved.

The bus bar welding device 7 is mainly used for bus bar welding the homopolar ends of a plurality of battery strings to form a battery interconnection plate a, after forming a plurality of interconnected solar battery strings a, bus bar welding needs to be added, however, how to pull the bus bar to a required position is the content of the scheme, in this embodiment, the bus bar is transferred from the preparation station 13 to the bus bar welding station 15 through a transfer mechanism 7a, specifically, the transfer mechanism 7a comprises a frame 71, an adsorption structure 72 and a transfer driving system 73, the frame 71 is arranged on the frame 1, the frame 71 comprises a transverse connecting frame 711, a transverse mounting seat 712, a vertical connecting frame 713 and a vertical mounting seat 714, the transverse connecting frame 711 is mounted on the stand 1, the transverse mounting seat 712 is movably mounted on the transverse connecting frame 711 in the transverse direction, the vertical connecting frame 713 is mounted on the transverse mounting seat 712, the vertical mounting seat 714 is movably mounted on the vertical connecting frame 713 in the up-down direction, the adsorbing structure 72 is movably mounted on the stand 71 so as to have a transverse and up-down moving stroke, the adsorbing structure 72 is used for adsorbing the busbar, the transferring driving system 73 is in driving connection with the adsorbing structure 72 so as to drive the adsorbing structure 72 to move in the transverse direction and up-down direction, and the transferring driving system 73 comprises a transverse driving device and a vertical driving device, and the transverse driving device drives the transverse mounting seat 712 to move transversely; the vertical driving device drives the vertical mounting seat 714 to move up and down; the adsorption structure 72 is mounted on the vertical mounting seat 714, so that the busbar is transferred from the preparation station 13 to the busbar welding station 15, the busbar is cut into a certain length by the transfer mechanism 7a so as to be suitable for being welded on the battery string, and the cut busbar is directly and automatically transferred to a welding place without manual transfer, so that the production efficiency is more convenient and higher, obviously, the setting form of the transfer mechanism 7a is not limited to the above one, and can be adjusted according to the setting orientation of the welding mechanism, so that the space is saved, the setting form of the busbar welding assembly 7 and the interconnection welding device 6 are of similar structures, and the setting form of the busbar welding assembly is not described in detail herein.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the specification and drawings of the present invention or direct/indirect application in other related technical fields are included in the scope of the present invention.

Claims (8)

1. A solar cell welding machine, comprising:

The machine base is provided with a sheet laying station, a waiting station, an interconnection welding station and a confluence welding station which are sequentially arranged along the left-right direction, and a plurality of preparation stations arranged between the waiting station and the interconnection welding station;

The conveying assembly is arranged on the base and comprises a transmission welding table device, the transmission welding table device comprises a first conveying device, the first conveying device comprises a first conveying belt, the first conveying belt is used for enabling a plurality of solar cells to be conveyed to the interconnection welding station through the sheet laying station in sequence, and the solar cells can be correspondingly stagnated at the sheet laying station, the waiting station, the preparation station and the interconnection welding station;

The first welding strip feeding device is arranged on the base and used for conveying the first welding strip extending forwards and backwards to a first conveying belt at a sheet laying station;

The second welding strip feeding device is arranged on the machine base and is used for conveying a plurality of second welding strips extending leftwards and rightwards to upper welding surfaces of a plurality of solar cells at a waiting station and a first conveyor belt at a laying station;

The battery piece feeding and discharging device is arranged on the base, and is used for conveying a plurality of solar battery pieces which are spaced in the front-back direction to a first conveyor belt at the piece laying station and for enabling lower welding surfaces of the plurality of solar battery pieces to be in pressure connection with the first welding belt and the plurality of second welding belts;

The interconnection welding device is arranged on the base and is used for performing interconnection welding on the first welding strip, the plurality of second welding strips and the corresponding plurality of solar cells at the interconnection welding station to form a plurality of interconnected solar cell strings; and

The converging welding device is arranged on the base and is used for converging and welding a plurality of interconnected solar cell strings conveyed to the converging welding station to form a cell interconnecting plate;

The conveying assembly is further used for conveying the plurality of interconnected solar cell strings formed by welding at the interconnection welding station to the confluence welding station, and the plurality of interconnected solar cell strings can be correspondingly stagnated at the confluence welding station;

the first welding strip feeding device comprises:

the first welding strip pickup piece is movably arranged on the base and provided with a movable stroke along the front and back direction and the up and down direction and is used for picking up the first welding strip; and

The first driving device is arranged on the base and used for driving the first welding strip pickup piece to move forwards and backwards and upwards and downwards so as to enable the first welding strip to be conveyed onto a first conveying belt at a sheet laying station;

the second welding strip feeding device comprises:

The second welding strip clamp is movably arranged on the base and provided with a left-right movable stroke for clamping a plurality of second welding strips; and

The second driving device is arranged on the base and drives the second welding strip clamp to move left and right, and the second driving device is used for enabling a plurality of second welding strips to be conveyed to upper welding surfaces of a plurality of solar cells at a waiting station and a first conveyor belt at a spreading station.

2. The solar cell welding machine according to claim 1, wherein the frame is further formed with a material taking position and a material discharging position for the solar cell, and the cell loading and unloading device comprises:

The battery piece material box feeding and discharging device is arranged on the base and is used for conveying the solar battery pieces in the battery piece material boxes to the material taking position;

The battery piece transmission device is arranged on the base and is used for transmitting the plurality of solar battery pieces at the material taking position to the material discharging position; and

And the battery piece blanking device is arranged on the base and is used for positioning and transferring the plurality of solar battery pieces positioned at the blanking position for the second time to the first conveyor belt at the piece laying station.

3. The solar cell welding machine of claim 2, wherein the cell magazine loading and unloading device comprises:

The second conveying device is arranged on the base, a plurality of second conveying belts which are arranged at intervals along the front-back direction and extend along the left-right direction are arranged on the second conveying device, a sheet feeding conveying channel and/or an empty box conveying channel which extend along the left-right direction are formed between two adjacent second conveying belts, a plurality of sheet feeding conveying channels are arranged, the sheet feeding conveying channels are used for conveying the battery sheet material boxes along the front-back direction, and the empty box conveying channels are used for moving out the empty battery sheet material boxes;

The jacking device is arranged below the material taking position, is provided with an upward and downward movable stroke, and respectively penetrates through gaps between the two corresponding second conveyor belts upwards and is used for respectively jacking the solar cells in the cell material boxes below the material taking position to the material taking position; and

And the empty box transferring assembly is used for transferring a plurality of empty battery piece material boxes positioned on the piece feeding conveying channel to the empty box conveying channel.

4. The solar cell welding machine of claim 2, wherein the cell transfer device comprises:

The third conveying device is arranged on the machine base and comprises a material taking device and a third conveying belt which moves forwards and backwards, a conveying path of the third conveying belt passes through the material discharging position, the material taking device is used for conveying the plurality of solar cells at the material taking position to the initial position of the third conveying belt, and the third conveying belt is used for conveying the plurality of solar cells at the initial position to the material discharging position; and

The detection device is arranged on the machine base and comprises a positioning component and/or a quality detection component, the positioning component is used for acquiring relative position information of the solar cells on the third conveyor belt, the relative position information comprises relative position data among a plurality of solar cells, and the quality detection component is used for acquiring abnormal information of the solar cells on the third conveyor belt.

5. The solar cell welding machine of claim 2, wherein the cell blanking device comprises:

The movable seat is movably arranged on the stand;

The plurality of material sheet pick-up pieces are movably arranged on the movable seat, are arranged side by side along the front-back direction and are respectively used for picking up one solar cell;

The first driving system is arranged on the base, is in driving connection with the movable seat and is used for driving the movable seat to move on the base so as to realize that the plurality of material sheet pick-up pieces respectively feed the plurality of solar battery sheets at the feeding position; and

The second driving system is arranged on the movable seat, is in driving connection with the material sheet pick-up pieces and is used for driving the material sheet pick-up pieces to move on the movable seat respectively and adjusting the relative positions among the solar cell sheets.

6. The solar cell soldering machine according to claim 1, wherein the transfer soldering station apparatus further comprises a heating apparatus and a cooling apparatus, the transfer soldering station apparatus corresponds to a plurality of temperature zones formed at the interconnection soldering station and arranged in a left-right direction, the plurality of temperature zones comprise a preheating temperature zone, a soldering temperature zone and a cooling temperature zone, the heating apparatus is mounted to the stand and arranged corresponding to the preheating temperature zone and/or the soldering temperature zone for heating the solar cell passing through the preheating temperature zone and/or the soldering temperature zone, and the cooling apparatus is mounted to the stand and arranged corresponding to the cooling temperature zone for cooling the solar cell after soldering; and/or the number of the groups of groups,

The interconnection welding device comprises a welding box, the welding box is movably arranged on the machine base so as to have an upper movable stroke and a lower movable stroke, the welding box is provided with an opening arranged downwards, an infrared welding lamp tube and a thimble are arranged in the welding box, the infrared welding lamp tube is used for radiating downwards to emit heat, the thimble can be arranged below the infrared welding lamp tube in an up-and-down movable mode, and the thimble is used for enabling the first welding strip and the second welding strips to be attached to and heated to be mutually fixed, so that electric connection is realized.

7. The solar cell soldering machine according to claim 1, wherein the transfer assembly further comprises a fourth transfer device for transferring the plurality of interconnected solar cell strings formed by soldering at the interconnection soldering station to the confluence soldering station, and for allowing the plurality of interconnected solar cell strings to correspondingly stagnate at the confluence soldering station;

The confluence welding device includes:

The bus welding strip conveying device is used for conveying bus welding strips extending in the front-back direction to the bus welding stations, and enabling the bus welding strips to be in lap joint with bus welding leads at the left end and the right end of the plurality of interconnected solar cell strings; and

And the confluence welding assembly is arranged on the base and used for fixing the confluence welding strip and the confluence welding lead wire in a welding way so as to realize electric connection.

8. The solar cell welder of claim 7, wherein the fusion welding device further comprises a cutting device disposed on the frame and between the interconnection welding station and the fusion welding station for cutting a continuous plurality of interconnected solar cell strings into the interconnected plate specification solar cell strings.