Solar cell module production method and device

Abstract

The invention provides a solar cell module production method and device, and the method comprises the steps: arranging solar cells on a supporting device according to a module model, arranging a welding strip on the solar cells according to the module model, covering the supporting device with a flexible film, carrying out the vacuum pumping between the flexible film and the supporting device, enabling laser to penetrate through the flexible film to irradiate a to-be-welded point, and completing the welding. Carrying the welded full-page welding assembly to a back plate comprising a first rigid layer and a first packaging layer, covering a second packaging layer and a cover plate of a second rigid layer, and laminating to obtain a solar cell assembly; wherein the supporting device is a negative pressure adsorption supporting device, and the battery pieces are adsorbed on the supporting device when being arranged according to an assembly model. According to the invention, the battery pieces can be always kept in an adsorbed state during arrangement, and deviation in the subsequent process is avoided. And compared with the mode of fixing the battery piece by heating, the subfissure of the battery piece caused by heating can be avoided. Compared with the mode that glue is dispensed below the battery piece for fixation, hidden cracks caused by unevenness of the battery piece can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of solar cell assembly welding, and in particular to a solar cell assembly production method and device. Background Art

[0002] Currently, when welding solar cell modules, the cells and welding ribbons can be arranged according to the module layout, then welded, and then laminated to form a solar cell module.

[0003] When the cells and the solder strips are welded after the whole layout, in order to avoid the movement of the cells, the solar cells can be fixed on the EVA of the back panel by heating. This method is easy to cause hidden cracks in the cells when heating the cells. You can also apply glue under the cells to fix them, but this method is easy to cause hidden cracks in the cells because the cells are not flat. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a method and device for producing a solar cell module to avoid the problem of hidden cracks when fixing the cell sheets.

[0005] In one aspect, the present invention provides a method for producing a solar cell module, comprising the following steps:

[0006] Arrange the solar cells on the support device according to the module layout.

[0007] Arrange the solder strips on the solar cells according to the module layout.

[0008] After all the cells and solder strips are arranged, a flexible film is covered on the support device, and a vacuum is drawn between the flexible film and the support device. The laser is irradiated through the flexible film to irradiate the welding points to complete the welding.

[0009] Among them, the supporting device is a negative pressure adsorption supporting device, and the battery cells are adsorbed on the supporting device when arranged according to the component layout.

[0010] A feasible method for producing a solar cell assembly also includes the steps of moving the welded whole-plate welded assembly to a back plate including a first rigid layer and a first packaging layer, covering a second packaging layer and a second rigid layer with a cover plate, and laminating to obtain a solar cell assembly.

[0011] A feasible method for producing a solar cell module comprises arranging solar cells on a support device according to a module layout, including carrying one or more solar cells on the support device according to the layout, then moving the support device, arranging one or more solar cells on the support device according to the layout requirements, until all cells required for the module are carried to the support device according to the layout requirements.

[0012] A feasible method for producing a solar cell module comprises arranging welding ribbons on a solar cell according to a module layout, including transferring a plurality of welding ribbons to the solar cell according to the layout requirements, and then moving a supporting device to transfer the plurality of welding ribbons to the solar cell according to the layout requirements, until all welding ribbons required for the module are transferred to the solar cell according to the layout requirements.

[0013] A method for producing a solar cell assembly that can be implemented includes, before arranging the welding ribbon on the solar cell sheet according to the assembly layout, the step of transferring the bus bar to a supporting device according to the assembly layout requirements.

[0014] A method for producing a solar cell assembly in an implementable manner, on a support device, each group of solar cells placed on the support device at the same time corresponds to an adsorption area, and each adsorption area is independently controlled; or,

[0015] Each cell has a separate adsorption area, and each adsorption area is independently controlled.

[0016] On the other hand, the present invention also provides a solar cell assembly production device, including a cell layout device, which is arranged at a cell layout station, and includes a cell handling robot, which transfers the cell to a support device according to the layout requirements.

[0017] The solder strip layout device is set at the solder strip layout station, including a solder strip handling robot, which transfers the solder strip to the battery cell according to the layout requirements;

[0018] A welding platform, a flexible membrane support device arranged above the welding platform and a laser processing module arranged above the flexible membrane, the welding platform carries the support device, the flexible membrane support device supports the flexible membrane, and the laser processing module welds the battery cell through the flexible membrane.

[0019] The component handling device is set at the unloading station to transfer the welded full-plate welded components to the laminating station;

[0020] The conveying device drives the supporting device to reciprocate between the battery cell arrangement station, the welding strip arrangement station, the welding station and the unloading station, and to move in steps at the battery cell arrangement station and the welding strip arrangement station;

[0021] Wherein, an adsorption area is set on the support device, each group of battery cells placed on the support device at the same time corresponds to an adsorption area, and each adsorption area is independently controlled; or, an adsorption area is set separately for each battery cell, and each adsorption area is independently controlled.

[0022] A solar cell assembly production device that can be implemented also includes a laminating device, which is arranged at a laminating station after a material unloading station to laminate the solar cell assembly.

[0023] A solar cell assembly production device that can be implemented, the conveying device is a belt conveyor module, including station conveyor belts arranged at a cell arrangement station, a welding strip arrangement station, a welding station and a material unloading station, and also including a return conveyor belt with a conveying direction opposite to that of the station conveyor belt. A steering conveyor belt is arranged between the material unloading station and the return conveyor belt, and between the welding strip arrangement station and the return conveyor belt to complete the movement of the support device from the material unloading station to the return conveyor belt, and from the return conveyor belt to the cell arrangement station.

[0024] A solar cell assembly production device that can be implemented, the conveying device is an interactive conveying module, which includes a support and at least two driving modules that can move in the vertical and horizontal directions, and interactively realize the reciprocating motion of the supporting device.

[0025] A solar cell assembly production device in an implementable embodiment, the cell handling manipulator comprises a handling arm, a plurality of suction cups arranged at the free end of the handling arm, and a handling drive mechanism for driving the handling arm to move;

[0026] The transport arm moves under the drive of the transport driving mechanism, so that the multiple suction cups move back and forth between the battery cell upper material position and the battery cell layout position, and the multiple battery cells are placed on the supporting device.

[0027] A solar cell module production device that can be implemented, the solder strip layout device at least includes a solder strip handling robot, which reciprocates between the solder strip loading position and the solder strip layout position to transfer and place multiple solder strips on the solder strip placement position.

[0028] A solar cell assembly production device in an implementable embodiment, the solder strip layout device further comprises a solder strip cutting assembly and a solder strip feeding assembly arranged before the solder strip handling manipulator;

[0029] The soldering ribbon is stored in rolls on the soldering ribbon roll. The soldering ribbon feeding assembly includes a soldering ribbon unwinding device, which releases the soldering ribbon in steps for a certain length. The soldering ribbon cutting device is arranged on the soldering ribbon release path, and includes a cutter, which cuts the soldering ribbon into segments. The soldering ribbon handling robot includes a clamping claw assembly, which is arranged on the soldering ribbon release path, and pulls the soldering ribbon segment cut into segments by the cutter to the soldering ribbon placement position.

[0030] A solar cell assembly production device that can be implemented, the laser processing module is arranged at a laser welding station, including a plurality of laser processing modules arranged side by side in a transverse manner, the laser processing module is arranged on a gantry structure, and drives it to reciprocate along the movement direction of the support device;

[0031] The welding platform includes a laser welding bearing platform, which carries a supporting device, and also includes a lifting component, which is arranged below the laser welding bearing platform, drives the laser welding bearing platform to rise and fall as a whole, rises to lift the supporting device to the height of the flexible film so that the flexible film covers the supporting device, and evacuates the covered closed space so that the flexible film presses the component;

[0032] The laser welding bearing platform comprises a flexible film adsorption area and a negative pressure adsorption area which are sequentially distributed from the outer side to the inner side along the adsorption surface of the bearing platform.

[0033] A solar cell assembly production device that can be implemented, the laser welding support platform is provided with a hollow portion corresponding to the conveying device, so that when the conveying device and the laser welding support platform are relatively raised and lowered, the conveying surface of the conveying device rises to above the laser welding support platform and below the laser welding support platform.

[0034] The solar cell assembly production method and device of the present invention can keep the cells in an adsorbed state when they are arranged, that is, after the cells are placed on the supporting device, to avoid displacement in the subsequent process. Compared with the method of fixing the cells on the POE or EVA film below them by heating, it can avoid hidden cracks in the cells caused by heating. Compared with the method of gluing the cells to the back plate by dispensing glue under the cells, it can avoid hidden cracks caused by uneven cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 A schematic diagram of the process of producing a solar cell module of the present application;

[0037] Figure 2 This is a schematic diagram of completing a full panel of solar cells and welding strips on a supporting device in the solar cell assembly production method of the present application;

[0038] Figure 3 This is a schematic diagram of the structure of the support device of the present application;

[0039] Figure 4 This is a schematic diagram of the flexible film of the present application covering a supporting device;

[0040] Figure 5 This is a schematic diagram of the supporting device at each workstation in the solar cell module production equipment of the present application;

[0041] Figure 6 This is a schematic diagram of the structure of the belt conveyor module of the present application;

[0042] Figure 7 This is a schematic diagram of the structure of the linear conveying module of the present application;

[0043] Figure 8 This is a schematic diagram of the structure of the battery cell layout device of the present application;

[0044] Fig. 9 This is a schematic diagram of the structure of the welding strip layout device of the present application;

[0045] Fig.10 and Fig.11 It is a structural schematic diagram of two states of the welding station of this application;

[0046] Fig.12 This is a schematic diagram of the structure of the unloading station of this application;

[0047] Fig.13 This is a schematic diagram of the structure of the flexible film of the present application covering the welding platform.

[0048] In the figure, a battery cell 1, a welding ribbon 2, a supporting device 3, a conveying device 4, a battery cell layout device 5, a welding ribbon layout device 6, a flexible film 7, a laser processing module 8, a welding platform 9, and a component handling device 10;

[0049] Adsorption area 31 , work station conveyor belt 411 , turning conveyor belt 412 , return conveyor belt 413 , bracket 421 , drive module 422 , laser welding bearing platform 91 , flexible film adsorption area 92 , negative pressure adsorption area 93 . DETAILED DESCRIPTION

[0050] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below with reference to the accompanying drawings.

[0051] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0052] Secondly, the present application is described in detail with reference to the schematic diagram. When describing the embodiments of the present application in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present application. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0053] See also Figures 1 to 4 ,in Figure 1 The present invention provides a method for producing a solar cell module, comprising:

[0054] Arrange the solar cells 1 on the support device 3 according to the module layout.

[0055] Arrange the soldering ribbon 2 on the solar cell 1 according to the module layout.

[0056] The supporting device 3 is a negative pressure adsorption supporting device, and the battery cells 1 are adsorbed on the supporting device 3 when arranged according to the assembly layout.

[0057] Among them, the solar cell panels 1 are arranged on the support device 3 according to the component layout, including carrying one or more solar cell panels 1 on the support device 3 according to the layout requirements, and then moving the support device 3 or the cell layout device 5 to continue to arrange one or more solar cell panels 1 on the support device 3 according to the layout requirements until all the cell panels 1 required for the component are carried to the support device 3 according to the layout requirements.

[0058] As a preferred manner, the battery cell layout device 5 picks up and places multiple battery cells 1, for example, a row, on the supporting device 3 at one time to complete the arrangement of a row of battery cells 1. Then, the supporting device 3 steps forward by a spacing (the spacing between two adjacent rows of battery cells 1 in the component layout), and the battery cell layout device 5 picks up and places a row of battery cells 1 on the supporting device 3 again to complete the arrangement of another row of battery cells 1. The supporting device 3 steps forward again, and the battery cell layout device 5 picks up and places battery cells 1 until the arrangement of the entire page of battery cells 1 is completed.

[0059] Of course, the placement of the entire page of battery cells 1 can also be completed by moving the battery cell layout device 5 step by step.

[0060] Among them, the welding ribbons 2 are arranged on the solar cell 1 according to the component layout, including transferring multiple welding ribbons 2 to the solar cell 1 for arrangement as required, and then moving the supporting device 3 or the welding ribbon layout device 6 to transfer multiple welding ribbons 2 to the solar cell 1 as required, until all the welding ribbons 2 required for the component are transferred to the solar cell 1 for arrangement as required by the layout.

[0061] Preferably, transferring the soldering ribbon 2 to the solar cell 1 for arrangement also includes fixing the soldering ribbon 2 to the solar cell 1 by glue.

[0062] As a preferred manner, the solder tape layout device 6 picks up and places multiple solder tapes 2, for example, a row, on two adjacent rows of battery cells 1 at one time to complete the arrangement of one row of solder tapes 2. Then, the support device 3 moves in steps by a spacing (the spacing between two adjacent rows of solder tapes 2 in the component format), and the solder tape layout device 6 picks up and places a row of solder tapes 2 on two adjacent rows of battery cells 1 again to complete the arrangement of another row of solder tapes 2. The support device 3 moves in steps again, and the solder tape layout device 6 picks up and places the solder tapes 2 until the arrangement of the entire plate of solder tapes 2 is completed.

[0063] Of course, the arrangement of the entire panel of battery cells 1 can also be completed by moving the solder strip arrangement device 6 step by step.

[0064] As a preferred solution, a method for producing a solar cell module of the present application further includes the step of transferring the busbars to the supporting device 3 according to the module layout before arranging the welding ribbons 2 .

[0065] See also Figure 2 , which is a schematic diagram of arranging the entire panel of battery cells and solder strips on a supporting device.

[0066] See also Figure 3 , is a schematic diagram of the support device of the present application. A plurality of independent adsorption regions 31 are arranged on the support device 3 of the present application. Each group of cells 1 placed on the support device 3 at the same time corresponds to an adsorption region 31; or, more preferably, each cell 1 is provided with an adsorption region 31 separately. Each adsorption region 31 is controlled independently. See Figure 3 , the area indicated by the dotted line is a schematic diagram of the adsorption area 31. For ease of understanding, the left side shows a schematic diagram of the battery cells arranged on the support device, and the right side shows a schematic diagram of the battery cells not yet placed, wherein the adsorption area when a row of battery cells are placed at the same time and each battery cell corresponds to an adsorption area are shown.

[0067] The present application adopts the above method, which can make the battery cells remain adsorbed when they are arranged, that is, after the battery cells are placed on the support device, to avoid displacement in the subsequent process. Compared with the method of fixing the battery cells on the POE or EVA film below them by heating, it can avoid the hidden cracks of the battery cells caused by heating. Compared with the method of sticking the battery cells to the backplane by dispensing glue under the battery cells, it can avoid the hidden cracks caused by the unevenness of the battery cells.

[0068] The solar cell assembly production method provided in the present application also includes a laser welding step. After all the cells 1 and the welding strips 2 are arranged, a flexible film 7 is covered on the support device 3, and a vacuum is drawn between the flexible film 7 and the support device 3. The laser is transmitted through the flexible film 7 to irradiate the welding points to complete the welding. Figure 4, is a schematic diagram of a structure in which a flexible film is covered on a supporting device. In order to show the state after the flexible film is covered, in this figure, the flexible film is transparent. In fact, the flexible film can be translucent or opaque, as long as the flexible film is transparent to the laser.

[0069] By covering the support device with a flexible film and applying a vacuum, the flexible film can be pressed against the arranged solar cells and welding strips. Laser welding through the flexible film can achieve a better welding effect and avoid cold welding. At the same time, the flexible film is covered with a vacuum to press against the welding strips and the cells, avoiding rigid pressure on the solar cells and effectively avoiding hidden cracks in the cells.

[0070] Specifically, the laser processing module 8 is disposed on the gantry mechanism, and is driven by the gantry mechanism to move along the supporting device 3 to complete the welding of the entire panel assembly.

[0071] The present application provides a method for producing a solar cell module, which also includes a lamination step, wherein the entire welded module is transferred to a backplane, and then covered with a second packaging layer and a second rigid layer, and laminated to obtain a solar cell module.

[0072] Among them, the backplane includes a first rigid layer and a first packaging layer, the first rigid layer and the second rigid layer are photovoltaic glass, and the first packaging layer and the second packaging layer are heat-sealing materials, such as EVA, POE, etc.

[0073] The present application also provides a solar cell module production device, including: a support device 3, which reciprocates between a cell arrangement station, a solder strip arrangement station, a welding station and a material unloading station. Specifically, a belt conveyor module or a linear conveyor module is provided under the support device 3 to drive it to reciprocate between the above-mentioned stations. Specifically, its reciprocating motion means that the support device 3 sequentially reaches the cell arrangement station, the solder strip arrangement station, the welding station and the material unloading station and completes the processing of the station, and then returns to the solder strip arrangement station to complete the next processing. See Figure 5 , shows a schematic diagram of the structure of the support device 3 at each station, from left to right, which are the battery cell arrangement station, the welding strip arrangement station, the welding station and the unloading station.

[0074] Among them, the supporting device 3 may include at least two, which alternately reciprocate between the above-mentioned stations to realize the continuous production of solar cell modules. Specifically, the alternate reciprocating motion means that when one supporting device 3 completes the processing of a certain station, another supporting device 3 completes the processing of another station at another station, or another supporting device 3 completes the movement from the unloading station to the cell arrangement station.

[0075] See also Figure 6Specifically, when it is a belt conveyor module, it is preferred that each workstation is provided with a separate workstation conveyor belt 411 to complete the stepping transmission of the support device 3 in the workstation, and a transition conveyor belt can be provided between two workstations to complete the transmission of the support device 3 from one workstation to another.

[0076] When it is necessary to return to the cell arrangement station from the unloading station, a return conveyor belt 413 is arranged parallel to the conveyor belts of the cell arrangement station and the unloading station, and the conveyor belts are opposite to the station conveyor belts and the transition conveyor belts. At the same time, a steering conveyor belt 412 is arranged between the unloading station and the return conveyor belt, and between the welding strip arrangement station and the return conveyor belt, so as to realize the movement of the support device 3 from the unloading station to the return conveyor belt, and from the return conveyor belt to the cell arrangement station. The steering conveyor belt 412 is a conveyor belt of the prior art.

[0077] See also Figure 7 When it is a linear conveying module, it can be implemented by setting an interactive conveying module. The interactive conveying module is a prior art, which includes a horizontal / vertical driving module. It includes a bracket 421 and at least two driving modules 422 that can move in the up and down and horizontal directions, and interactively realizes the return of the supporting device 3.

[0078] See also Figure 8 , is a structural schematic diagram of a battery cell layout device, the battery cell layout device 5, is arranged at a battery cell layout station, and includes a battery cell handling robot.

[0079] See also Fig. 9 , is a structural schematic diagram of a solder strip layout device, the solder strip layout device 6, is arranged at a solder strip layout station, and includes a solder strip handling robot.

[0080] See also Fig.10 and Fig.11 , which is a structural schematic diagram of a welding station, wherein a laser processing module 8 is arranged at the welding station, including a welding platform 9, a flexible membrane 7 supporting device 3 arranged above the welding platform 9, and a laser processing module 8 arranged above the flexible membrane 7.

[0081] See also Fig.10 , is a schematic diagram of the mechanism of the unloading station, including a component handling device 10, which is arranged at the unloading station.

[0082] A plurality of independent adsorption regions 31 are provided on the support device 3. Each group of batteries placed on the support device 3 at the same time corresponds to one adsorption region 31; or, more preferably, each battery cell 1 is provided with an adsorption region 31 independently. Each adsorption region 31 is controlled independently.

[0083] See also Figure 8The cell handling robot includes a handling arm, a plurality of suction cups arranged at the free end of the handling arm, and a handling drive mechanism for driving the handling arm to move. The handling arm moves under the drive of the handling drive mechanism, so that the plurality of suction cups reciprocate between the cell upper material position and the cell layout position, and place the plurality of cell 1 on the support device 3. The cell upper material position refers to the position where the cell is supplied, which can be the end of the belt conveyor line or the material box where the cell is placed. The cell layout position refers to the position where the cell is placed on the support device.

[0084] The cell layout device 5 is a prior art, and any cell can be adsorbed, transferred and placed. The driving mechanism can be a motor, etc., and the robot arm can rotate, translate, etc. The suction cup is a downwardly arranged suction cup of the prior art, and the number of suction cups can be multiple. As an implementable method, the cell layout device 5 includes two, which are respectively arranged in the width direction of the support device 3, and can be a multi-axis robot including three suction cups.

[0085] See also Fig. 9 The solder strip layout device 6 at least includes a solder strip handling robot, which reciprocates between the solder strip loading position and the solder strip layout position to transfer and place multiple solder strips 2 on the solder strip placement position. The solder strip loading position is the position where the solder strip 2 is supplied, which can be the end of the solder strip layout device 6 or the position where the solder strip 2 is placed. The solder strip layout position is the position where the solder strip is placed on the battery cell.

[0086] The solder strip handling robot is an existing technology, for example, including a transverse movement module, and a plurality of clamping jaw assemblies arranged on the transverse movement module. The clamping jaw assembly can clamp the solder strip 2 and transfer it from the solder strip loading station to the solder strip layout station driven by the transverse movement module.

[0087] In order to adapt to the continuous step layout of the solder ribbon 2, the solder ribbon layout device 6 also includes a solder ribbon cutting assembly and a solder ribbon feeding assembly arranged before the solder ribbon pulling assembly. The solder ribbon feeding assembly, the solder ribbon cutting assembly and the solder ribbon pulling assembly are prior arts, as long as the solder ribbon can be cut into solder ribbon segments, pulled and placed on the corresponding battery cells.

[0088] As a specific implementation method, the soldering ribbon is rolled and stored on a soldering ribbon roll, and the soldering ribbon feeding assembly includes a soldering ribbon unwinding device, which releases the soldering ribbon in steps for a certain length; a soldering ribbon cutting device, which is arranged on the soldering ribbon release path, includes a cutter, which cuts the soldering ribbon into segments; a clamping jaw assembly is arranged on the soldering ribbon release path, which pulls the soldering ribbon segment cut into segments by the cutter (here is the soldering ribbon loading station) to the soldering ribbon layout station for release, thereby completing the soldering ribbon arrangement.

[0089] Preferably, the solder ribbon feeding assembly, the solder ribbon cutting assembly and the solder ribbon handling robot are arranged along the movement direction of the supporting device 3 .

[0090] See also Fig.10 , a laser processing module 8 is arranged at a laser welding station. As an optional embodiment, it includes a plurality of laser processing modules 8 arranged side by side in a transverse direction (perpendicular to the movement direction of the support device 3), and the laser processing module 8 is arranged on a gantry structure to drive it to reciprocate along the movement direction of the support device 3. After the plurality of laser processing modules 8 arranged side by side in a transverse direction complete the welding of one or more rows of welding strips 2, the gantry structure drives them to step and move to the next welding area to complete the welding of another row or more parallel welding strips 2.

[0091] See also Fig. 9 , Fig.10 and Fig.13 The welding station is also provided with a welding platform 9, which includes a laser welding carrier 91, which carries a supporting device 3. The lifting component is arranged under the laser welding carrier 91, driving the laser welding carrier 91 to lift and lower as a whole. Specifically, the laser welding carrier 91 is driven to rise as a whole to lift the supporting device 3 to the height of the flexible film so that the flexible film covers the supporting device 3, and the covered closed space is evacuated so that the flexible film presses the arranged battery cells and welding strips. Fig. 9 and Fig.10 Schematic diagrams of the structures of the support device without and with the flexible membrane covered, respectively.

[0092] The laser welding support platform 91 includes a flexible film adsorption area 92 and a negative pressure adsorption area 93 which are sequentially distributed from the periphery to the inside along the adsorption surface of the support platform.

[0093] The laser welding platform 91 is provided with a hollow portion corresponding to the conveying device 4 so that when the conveying device 4 and the laser welding platform 91 are relatively raised or lowered, the conveying surface of the conveying device 4 rises to a position higher than the laser welding platform 91 and lower than the laser welding platform 91 .

[0094] As a specific implementation, the laser welding support platform 91 includes a negative pressure support frame, which includes the aforementioned flexible film adsorption area 92 and negative pressure adsorption area 93. The negative pressure support frame is a rectangular frame with a hollow middle. The free end of the lifting module is fixed on the negative pressure support frame. Specifically, there are multiple lifting modules, preferably four ball screw modules, which are connected in series through a transmission shaft, and the free ends are fixed on the negative pressure support frame. The motor drives the ball screw module to rise and fall, thereby driving the negative pressure support frame to rise and fall.

[0095] Those skilled in the art can understand that the flexible membrane adsorption area 92 and the negative pressure adsorption area 93 are controlled separately. Specifically, the flexible membrane adsorption area 92 includes a flexible membrane adsorption hole, which is connected to a vacuum generating device. The negative pressure adsorption area includes a negative pressure adsorption hole, which is connected to a vacuum generating device. The flexible membrane adsorption hole and the negative pressure adsorption hole are arranged on the upper surface of the negative pressure bearing frame, not only on the upper surface, but can have a certain depth on the bearing platform, or even penetrate the bearing platform, and communicate with the vacuum generating device through the cavity inside the bearing platform.

[0096] Fig.10 and Fig.11 They are state diagrams before the flexible film covers the supporting device and after the flexible film covers the supporting device and when vacuum is drawn for laser welding processing.

[0097] See also Fig.12 The unloading station includes a component handling mold 10, including a component handling module, and the component handling module includes a handling frame, and a plurality of suction cups are arranged under the handling frame to absorb the whole-plate welding components. The handling frame is driven by a handling drive device to reciprocate between the unloading station and the packaging station, and the whole-plate welding components are transported to the laminating station for lamination.

[0098] In the present application, the support device 3 is preferably movable. In order to realize negative pressure adsorption during movement, a small vacuum generator can be loaded under the support device 3 and move with the support device 3. At the welding station, if the space covered by the flexible film needs to be evacuated, an independent adsorption hole is set on the welding platform 9 and connected to the vacuum generator.

[0099] The above is only a preferred implementation of the present application. Although the present application has been disclosed as a preferred embodiment, it is not intended to limit the present application. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the present application without departing from the scope of the technical solution of the present application, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of protection of the technical solution of the present application.

Claims

1. A method for producing a solar cell module, characterized in that: The following steps are included: Arrange the solar cells on the support device according to the module layout. Arrange the solder strips on the solar cells according to the module layout. After all the cells and solder strips are arranged, a flexible film is covered on the support device, and a vacuum is drawn between the flexible film and the support device. The laser is irradiated through the flexible film to irradiate the welding points to complete the welding. Among them, the supporting device is a negative pressure adsorption supporting device, and the battery cells are adsorbed on the supporting device when arranged according to the component layout.

2. The method for producing a solar cell assembly according to claim 1, characterized in that: The method also includes the steps of moving the welded whole-plate welding assembly to a back plate including a first rigid layer and a first packaging layer, covering a cover plate with a second packaging layer and a second rigid layer, and laminating to obtain a solar cell assembly.

3. The method for producing a solar cell module according to claim 1, characterized in that: Arranging the solar cells on the support device according to the module layout includes: carrying one or more solar cells on the support device according to the layout, and then moving the support device to arrange one or more solar cells on the support device according to the layout requirements, until all the cells required for the module are carried to the support device according to the layout requirements.

4. The method for producing a solar cell assembly according to claim 1, characterized in that: Arranging the welding ribbons on the solar cell according to the component layout includes transferring multiple welding ribbons to the solar cell according to the layout requirements, and then moving the supporting device to transfer the multiple welding ribbons to the solar cell according to the layout requirements until all the welding ribbons required by the component are transferred to the solar cell according to the layout requirements.

5. The method for producing a solar cell module according to claim 1, characterized in that: Before arranging the welding ribbons on the solar cell sheets according to the module layout, the method also includes the step of transferring the busbars to the supporting device according to the module layout requirements.

6. The method for producing a solar cell assembly according to claim 1, characterized in that: On the support device, each group of battery cells placed on the support device at the same time corresponds to an adsorption area, and each adsorption area is independently controlled; or, Each cell has a separate adsorption area, and each adsorption area is independently controlled.

7. A solar cell module production device, characterized in that: It includes a cell layout device, which is set at the cell layout station, and a cell handling robot, which transfers the cell to the support device according to the layout requirements. The solder strip layout device is set at the solder strip layout station, including a solder strip handling robot, which transfers the solder strip to the battery cell according to the layout requirements; A welding platform, a flexible membrane support device arranged above the welding platform and a laser processing module arranged above the flexible membrane, the welding platform carries the support device, the flexible membrane support device supports the flexible membrane, and the laser processing module welds the battery cell through the flexible membrane. The component handling device is set at the unloading station to transfer the welded full-plate welded components to the laminating station; The conveying device drives the supporting device to reciprocate between the battery cell arrangement station, the welding strip arrangement station, the welding station and the unloading station, and to move in steps at the battery cell arrangement station and the welding strip arrangement station; Wherein, an adsorption area is set on the support device, each group of battery cells placed on the support device at the same time corresponds to an adsorption area, and each adsorption area is independently controlled; or, an adsorption area is set separately for each battery cell, and each adsorption area is independently controlled.

8. The solar cell module production device according to claim 7, characterized in that: The invention also comprises a laminating device, which is arranged at a laminating station after a material unloading station and is used to laminate solar cell components.

9. The solar cell module production device according to claim 7, characterized in that: The conveying device is a belt conveying module, including station conveyor belts arranged at the battery cell arrangement station, the welding strip arrangement station, the welding station and the unloading station, and also including a return conveyor belt in the opposite direction of the conveying direction of the station conveyor belt. A steering conveyor belt is arranged between the unloading station and the return conveyor belt, and between the welding strip arrangement station and the return conveyor belt to complete the movement of the supporting device from the unloading station to the return conveyor belt, and from the return conveyor belt to the battery cell arrangement station.

10. The solar cell module production device according to claim 7, characterized in that: The conveying device is an interactive conveying module, which includes a support and at least two driving modules that can move in the up and down and horizontal directions, and interactively realizes the reciprocating motion of the supporting device.

11. The solar cell module production device according to claim 7, characterized in that: The battery cell handling robot comprises a handling arm, a plurality of suction cups arranged at the free end of the handling arm, and a handling drive mechanism for driving the handling arm to move; The transport arm moves under the drive of the transport driving mechanism, so that the multiple suction cups move back and forth between the battery cell upper material position and the battery cell layout position, and the multiple battery cells are placed on the supporting device.

12. The solar cell module production device according to claim 7, characterized in that: The solder strip layout device at least includes a solder strip handling robot, which reciprocates between the solder strip loading position and the solder strip layout position to transfer and place multiple solder strips on the solder strip placement position.

13. The solar cell module production device according to claim 12, characterized in that: The solder strip layout device also includes a solder strip cutting assembly and a solder strip feeding assembly arranged before the solder strip handling manipulator; The soldering ribbon is stored in rolls on the soldering ribbon roll. The soldering ribbon feeding assembly includes a soldering ribbon unwinding device, which releases the soldering ribbon in steps for a certain length. The soldering ribbon cutting device is arranged on the soldering ribbon release path, and includes a cutter, which cuts the soldering ribbon into segments. The soldering ribbon handling robot includes a clamping claw assembly, which is arranged on the soldering ribbon release path, and pulls the soldering ribbon segment cut into segments by the cutter to the soldering ribbon placement position.

14. The solar cell module production device according to claim 7, characterized in that: The laser processing module comprises a plurality of laser processing modules arranged side by side in a transverse manner, and the laser processing modules are arranged on the gantry structure to drive the gantry structure to reciprocate along the movement direction of the supporting device; The welding platform includes a laser welding bearing platform and a lifting component, which is arranged below the laser welding bearing platform and drives the laser welding bearing platform to lift and lower as a whole, and rises to lift the supporting device to the height of the flexible film so that the flexible film covers the supporting device, and evacuates the covered closed space so that the flexible film presses the component; The laser welding bearing platform comprises a flexible film adsorption area and a negative pressure adsorption area which are sequentially distributed from the outer side to the inner side along the adsorption surface of the bearing platform.

15. The solar cell module production device according to claim 14, characterized in that: The laser welding carrier platform is provided with a hollow portion corresponding to the conveying device, so that when the conveying device and the laser welding carrier platform are relatively lifted or lowered, the conveying surface of the conveying device rises to a level higher than the laser welding carrier platform and lower than the laser welding carrier platform.

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