Single-sided and double-sided solar cell patterning equipment and patterning method thereof

Abstract

The invention provides single-sided and double-sided solar cell patterning equipment and a patterning method thereof. The single-sided solar cell patterning equipment comprises a feeding conveying line group, a table top rotating mechanism and a patterning assembly, the feeding conveying line group is used for conveying a plurality of battery pieces to flow into the table top rotating mechanism at the same time; the patterning assembly only carries out patterning processing on one battery piece borne on the table top rotating mechanism each time. According to the patterning equipment for the single-sided solar cells, the multiple cells are arranged at a time, and the multiple cells are patterned at the same time through the patterning assemblies on the multiple table top rotating mechanisms, so that the cost is relatively reduced, the efficiency of the patterning equipment is improved to a certain extent, and the requirement of large-scale production can be met.

Description

Technical Field

[0001] The invention relates to the field of solar cell and semiconductor manufacturing, and in particular to a single-sided or double-sided solar cell patterning device and a patterning method thereof. Background Art

[0002] At present, in the production process of solar cells, the production of cell grid lines is usually done by screen printing. This method uses screen printing silver paste, and then sintering at high or low temperature to form an ohmic contact electrode between the semiconductor and the metal to guide the photogenerated carriers. This method is simple and is the current mainstream mass production process. However, the cost of the silver paste used in this method is high, and the width and aspect ratio of the printed silver grid lines are limited, resulting in low cell efficiency. At the same time, the screen needs to be cleaned and maintained regularly.

[0003] The use of electroplating to make grid lines for solar cells can reduce costs and improve cell efficiency. This method can use cheaper metals such as titanium and copper to replace the silver required in the screen printing process, thereby reducing costs. At the same time, this method can also form narrower grid lines through photolithography, reduce the shading area of ​​the cell, increase the current of the cell, and thus improve the photoelectric conversion efficiency.

[0004] The above-mentioned electroplating method involves the patterning of the mask on the solar cell, which needs to be processed by a patterning device. In the process of patterning the cell, it is necessary to keep the spacing between the mask plate and the upper surface of the cell constant. However, due to the inconsistent thickness of each cell, the patterning spacing will change during the production process, resulting in inconsistent pattern patterns and defects beyond the pattern tolerance range; this makes it necessary to adjust the patterning spacing when the cell is patterned at the patterning station, which further makes it difficult to use a simple assembly line for rapid production in the patterning equipment. At the same time, the position parameters of the cell will change during the loading and transmission process of the patterning equipment, and the position parameters of the cell need to be adjusted when the cell is patterned at the patterning station. Therefore, in the current patterning equipment, only one cell is transmitted to the patterning station for patterning at a time. Before the cell arrives at the patterning station, the patterning spacing and position parameters of the cell are pre-adjusted to avoid adjustment at the patterning station, which improves the efficiency of the patterning equipment to a certain extent. However, the above-mentioned single-chip patterning process still has a low production efficiency and is difficult to meet the low-cost and large-scale production needs of solar cells.

[0005] In view of the above, it is necessary to provide a single-sided and double-sided solar cell patterning device and a patterning method thereof to solve the problem of low efficiency in the prior art of patterning equipment in which only one cell is transferred to the patterning station for patterning processing at a time. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a single-sided and double-sided solar cell patterning device and a patterning method thereof, which are used to solve the problem of low efficiency in the prior art in which only one cell is transferred to the patterning station for patterning processing at a time in the patterning device.

[0007] To achieve the above-mentioned and other related purposes, the present invention provides a single-sided solar cell patterning device, the single-sided solar cell patterning device comprising:

[0008] Feed conveyor line group, table rotation mechanism and graphic components;

[0009] The feed conveyor line group is used to simultaneously convey multiple battery cells into the table rotating mechanism;

[0010] The number of the table rotating mechanisms matches the number of battery cells conveyed simultaneously on the feeding conveyor line group, and a plurality of the table rotating mechanisms are arranged in sequence. The table rotating mechanisms include at least two rotating platforms, one of which is located at the sheet splicing station, and the other is located at the patterning station. The rotating platforms are used to carry battery cells;

[0011] The table rotating mechanism further includes a driving device, the driving device is used to drive one of the rotating platforms located at the sheet joining station to rotate and move to the patterning station, and the other rotating platform located at the patterning station to rotate and move to the sheet joining station;

[0012] The graphic component is disposed adjacent to the graphic processing station, and each graphic component performs graphic processing on only one battery sheet carried on the rotating platform at a time.

[0013] Optionally, a paper rolling mechanism is provided on the rotating platform, on which movable and breathable paper is carried, for flowing the battery cells from the feeding conveying line group or the adjacent table rotating mechanism into the rotating platform located at the feeding station, so as to realize the transportation of the battery cells.

[0014] Optionally, the paper rolling mechanism comprises:

[0015] An adsorption platform, wherein adsorption holes are arranged on the adsorption platform, and air-permeable paper is carried on the adsorption platform, and the adsorption platform can adsorb the battery sheet through the paper;

[0016] An unwinding assembly is located below the adsorption platform, and one end of the paper is connected to the unwinding assembly;

[0017] A winding assembly is located below the adsorption platform, and the other end of the paper is connected to the winding assembly;

[0018] The paper is released by the unwinding assembly and recovered by the rewinding assembly, so that the paper moves on the adsorption platform, thereby driving the battery sheet to move.

[0019] Optionally, the unwinding assembly comprises:

[0020] An unwinding roller, one end of the paper is wound around the unwinding roller;

[0021] A first driving member, located at the peripheral side of the unwinding roller, a working end of which is connected to the unwinding roller through a belt, so that the unwinding roller rotates around its own axis to drive the paper to be released from the unwinding roller;

[0022] The first adjusting roller is located between the unwinding roller and the adsorption platform and is used to adjust the tension of the paper when it is released; the winding assembly includes:

[0023] A winding roller, on which the other end of the paper is wound;

[0024] A second driving member is located at the periphery of the winding roller, and a working end thereof is connected to the winding roller through a belt, so that the winding roller rotates around its own axis, and the rotation directions of the winding roller and the unwinding roller are opposite, so as to drive the winding roller to recycle the paper;

[0025] The second adjusting roller is located between the winding roller and the adsorption platform and is used for adjusting the tension of the paper during recycling.

[0026] Optionally, a rotating transport mechanism is provided between the feed conveying line group and the table rotating mechanism, and between any two adjacent table rotating mechanisms, so as to realize the transportation of the battery cells.

[0027] Optionally, the table rotating mechanism further comprises a rotating platform, and this group of rotating platforms is located at the sheet discharging station, and the angle between any two adjacent rotating platforms is 120°, the sheet discharging station is located downstream of the patterning station, and the driving device is used to drive one of the rotating platforms located at the sheet splicing station to rotate and move to the patterning station, one of the rotating platforms located at the patterning station to rotate and move to the sheet discharging station, and one of the rotating platforms located at the sheet discharging station to rotate and move to the sheet splicing station, and the rotating platform at the previous sheet discharging station is set against the rotating platform at the next sheet splicing station;

[0028] Alternatively, the table rotating mechanism also includes two rotating platforms, one rotating platform is located at the film discharge station, and the other rotating platform is located at the reset station, the angle between any two adjacent rotating platforms is 90°, the film discharge station and the reset station are successively located downstream of the graphic processing station, and the driving device is used to drive one of the rotating platforms located at the film splicing station to rotate and move to the graphic processing station, one of the rotating platforms located at the graphic processing station to rotate and move to the film discharge station, one of the rotating platforms located at the film discharge station to rotate and move to the reset station, and one of the rotating platforms located at the reset station to rotate and move to the film splicing station, and the rotating platform on the previous film discharge station is set against the rotating platform of the next film splicing station.

[0029] Optionally, the single-sided solar cell patterning device further includes any one of the following structures or a combination of two or more of them:

[0030] (1) A detection component, which is located at the outgoing station and is used to detect whether the battery cell after patterning is damaged. If damaged, the unqualified battery cell is removed at the resetting station; if not damaged, the subsequent process flow is carried out normally;

[0031] (2) A aligning device is provided on the feed conveyor line group for aligning the position of the battery cells;

[0032] (3) The visual component is located at the wafer splicing station and is used to take pictures of the battery cells flowing into the wafer splicing station for positioning. Before the patterning process, the patterning component performs compensation alignment in the X-axis, Y-axis and T-axis directions on the pattern components in the patterning component according to the positioning result of the visual component, so as to achieve alignment between the pattern components and the battery cells to be patterned;

[0033] (4) a discharge conveyor line group, located downstream of the table rotating mechanism, for simultaneously discharging multiple patterned battery cells;

[0034] The battery cells on the feeding conveying line group and the discharging conveying line group are arranged on the same straight line.

[0035] Optionally, the patterned component can be replaced with a screen-printed component and applied to screen printing.

[0036] The present invention also provides a method for patterning a single-sided solar cell, the method comprising:

[0037] Put multiple battery cells into the feeding conveyor line group at the same time;

[0038] The multiple cells on the feeding conveyor line group flow into the table rotating mechanism through the splicing station. When the multiple cells arrive at the patterning station at the same time, the patterning component patterns one of the cells. Each table rotating mechanism patterns a different cell at a time until all the cells are patterned. The present invention also provides a double-sided solar cell patterning device, which includes:

[0039] Two single-sided solar cell patterning devices as described above, and a flipping mechanism between the two single-sided solar cell patterning devices;

[0040] The single-sided solar cell patterning device is used to perform single-sided patterning on the cell;

[0041] The flipping mechanism is used to flip multiple battery cells.

[0042] The present invention also provides a method for patterning a double-sided solar cell, the method comprising:

[0043] Put multiple solar cells into a single-sided solar cell patterning device at the same time, and perform patterning on the single sides of the multiple solar cells at the same time;

[0044] The plurality of battery cells which have been subjected to single-side patterning processing flow into a flipping mechanism, and the flipping mechanism flips the plurality of battery cells simultaneously;

[0045] The flipped multiple solar cells flow into another single-sided solar cell patterning device, and the other side of the multiple solar cells is patterned to achieve double-sided patterning of the multiple solar cells at the same time.

[0046] As described above, the single-sided and double-sided solar cell patterning device and the patterning method of the present invention have the following beneficial effects:

[0047] The single-sided solar cell patterning equipment in the present invention arranges multiple cells at one time and simultaneously patterns multiple cells through patterning components on multiple table rotating mechanisms, which relatively reduces the cost and improves the efficiency of the patterning equipment to a certain extent, and can meet the needs of large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic plan view of the first embodiment of the single-sided solar cell patterning device of the present invention.

[0049] Figure 2 Shown is a schematic structural diagram of the feed conveying line group of the present invention.

[0050] Figure 3 Shown is a schematic structural diagram of the correction device of the present invention.

[0051] Figure 4 Shown is a schematic structural diagram of the paper winding mechanism of the present invention.

[0052] Figure 5 It is a schematic plan view of the second embodiment of the single-sided solar cell patterning device of the present invention.

[0053] Figure 6 It is a plan view showing the single-sided solar cell patterning equipment in the third embodiment of the present invention when there are four processing stations.

[0054] Figure 7 It is a plan view showing the single-sided solar cell patterning equipment in the third embodiment of the present invention when there are 6 processing stations.

[0055] Figure 8 It is a plan view showing the single-sided solar cell patterning equipment in the third embodiment of the present invention when there are 8 processing stations.

[0056] Fig. 9 It is a schematic plan view of a fourth embodiment of the single-sided solar cell patterning device of the present invention.

[0057] Component number description

[0058] 10 Feeding conveyor line group

[0059] 11First transmission line group

[0060] 12 Second transmission line group

[0061] 13Third transmission line group

[0062] 20 battery pack

[0063] 21 First Cell

[0064] 22 Second battery cell

[0065] 31 First table rotating mechanism

[0066] 32 Second table rotating mechanism

[0067] 411 first splicing station

[0068] 412 Second splicing station

[0069] 421 First Graphics Degree

[0070] 422 Second Graphics Degree

[0071] 431 First film output station

[0072] 432 Second film output station

[0073] 441 First reset station

[0074] 442 Second reset station

[0075] 451 First Graphical Component

[0076] 452 Second Graphical Component

[0077] 51 First station

[0078] 52 Second station

[0079] 53 The third station

[0080] 54 Fourth Station

[0081] 55 Fifth Station

[0082] 60 Discharging conveyor line set

[0083] 61 Fourth transmission line group

[0084] 62 Fifth transmission line group

[0085] 63 Sixth transmission line group

[0086] 70 Rotating transport mechanism

[0087] 80 Gauge

[0088] 90 Paper roll mechanism

[0089] 91 Unwinding Roller

[0090] 92 first drive member

[0091] 93 First adjustment roller

[0092] 94 Winding Roller

[0093] 95 Second driving member

[0094] 96 Second adjustment roller

[0095] 97 Paper

[0096] 100 Didi Motor DETAILED DESCRIPTION

[0097] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0098] See also Figures 1 to 9 It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, and the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be appropriately improved, and the component layout may also be more complicated.

[0099] Solar cell (also called cell) includes whole cell and cell slice. Cell slice refers to at least one group of small cells with shorter sides shorter than regular size cells (156mm-230mm), including two slices or three slices of a regular square cell, or a whole cell cut directly from a silicon rod.

[0100] Embodiment 1

[0101] like Figure 1 As shown, this embodiment provides a single-sided solar cell patterning device, and the solar cell patterning device includes:

[0102] A feeding conveyor line group 10, a table rotating mechanism and a patterning component; the feeding conveyor line group is used to simultaneously convey multiple battery cells into the table rotating mechanism; the number of table rotating mechanisms matches the number of battery cells simultaneously conveyed on the feeding conveyor line group 10, and multiple table rotating mechanisms are arranged in sequence, and the table rotating mechanism includes at least two rotating platforms, one rotating adsorption platform is located at the splicing station, and the other rotating adsorption platform is located at the patterning station, and the rotating adsorption platform is used to carry the battery cells; the table rotating mechanism also includes a driving device, the driving device is used to drive a rotating platform located at the splicing station to rotate and move to the patterning station, and another rotating platform located at the patterning station to rotate and move to the splicing station; the patterning component is arranged adjacent to the patterning station, and each patterning component only performs patterning on one battery cell carried on the rotating platform at a time.

[0103] In one embodiment, the solar cell patterning equipment includes: a feed conveyor line group 10 , N table rotating mechanisms and a discharge conveyor line group 60 .

[0104] Specifically, the feeding conveyor line group 10 includes several conveyor line groups, which are used to convey the battery cell group 20 into the solar cell patterning equipment. In other words, multiple battery cells are conveyed into the table rotating mechanism at the same time. Each battery cell group 2 includes N regularly placed battery cells, N≥2, and N is an integer; wherein the number of conveyor line groups included in the feeding conveyor line group 10 is at least 1, and the conveyor line group can be a belt conveying structure.

[0105] N table rotating mechanisms, that is, the number of table rotating mechanisms matches the number of battery cells simultaneously conveyed on the feed conveyor line group 10, the table rotating mechanism includes M rotating platforms, each rotating platform corresponds to a processing station, the processing stations at least include a splicing station, a patterning station and a discharging station, a patterning component is arranged above the patterning station, and a battery cell is patterned each time, M≥3, and M is an integer.

[0106] The discharging conveyor line group 60 includes a plurality of conveyor line groups for flowing the patterned cell group 20 out of the solar cell patterning device; wherein the discharging conveyor line group 60 includes at least one conveyor line group, and the conveyor line group can be a belt conveying structure.

[0107] The battery cell group 20 of the feeding conveying line group 10 and the battery cell group 20 on the discharging conveying line group 60 are arranged in a straight line, that is, the conveying direction of the feeding conveying line group 10 and the conveying direction of the discharging conveying line group 60 are collinear.

[0108] The single-sided solar cell patterning device in this embodiment arranges multiple cells at one time and simultaneously patterns multiple cells through patterning components on multiple tabletop rotating mechanisms, which relatively reduces the cost and improves the efficiency of the patterning device to a certain extent, and can meet the needs of mass production. Figures 1 to 4 As shown, taking N as 2 and M as 3 as an example, the single-sided solar cell patterning equipment is described in detail.

[0109] Specifically, Figure 2 As shown, the feed conveyor line group 10 includes three conveyor line groups, namely the first conveyor line group 11, the second conveyor line group 12 and the third conveyor line group 13. The feed conveyor line group 10 is used to flow the battery cell group 20 into the table rotating mechanism. The battery cell group 20 includes two battery cells, namely the first battery cell 21 and the second battery cell 22. Preferably, the upper surfaces or lower surfaces of the two battery cells in the same battery cell group 20 are in a coplanar relationship, and the adjacent side lines of the two battery cells are parallel to each other.

[0110] The number of table rotating mechanisms is the same as the number of battery cells, both of which are 2, namely the first table rotating mechanism 31 and the second table rotating mechanism 32. The first table rotating mechanism 31 includes 3 rotating platforms, each rotating platform corresponds to a processing station, and the angle between any two adjacent rotating platforms, that is, the angle between the processing stations, is 120°. The driving device is used to drive a rotating platform located at the splicing station to rotate and move to the graphic processing station, a rotating platform located at the graphic processing station to rotate and move to the sheet output station, and a rotating platform located at the sheet output station to rotate and move to the splicing station. The rotating platform on the previous sheet output station is offset from the rotating platform on the next splicing station. The processing stations include a first splicing station 411, a first patterning station 421 and a first sheet-out station 431 in sequence. A first patterning component 451 is arranged above the first patterning station 421, and the first battery cell 31 is patterned each time. The second table rotating mechanism 32 includes three rotating platforms, each rotating platform corresponds to one processing station, and the angle between any two adjacent rotating platforms, that is, the angle between the processing stations, is 120°. The processing stations include a second splicing station 412, a second patterning station 422 and a second sheet-out station 432 in sequence. A second patterning component 452 is arranged above the second patterning station 422, and the second battery cell 22 is patterned each time.

[0111] A rotating transport mechanism 70 is provided between the first table rotating mechanism 31 and the second table rotating mechanism 32, that is, between the first sheet discharging station 431 and the second sheet joining station 412, to transport the battery cell group 20 from the first sheet discharging station 431 of the first table rotating mechanism 31 to the second sheet joining station 412 of the second table rotating mechanism 32. The rotating transport mechanism 70 here needs to be rotated twice to realize the transportation. In this embodiment, the rotating transport mechanism here is a two-axis manipulator that can rotate in two dimensions.

[0112] The discharge conveyor line group 60 includes three conveyor line groups, namely the fourth conveyor line group 61, the fifth conveyor line group 62 and the sixth conveyor line group 63. The discharge conveyor line group is used to discharge the battery cell group 20 out of the solar cell patterning equipment for unloading.

[0113] The first battery cell 21 of the feed conveyor line group 10 and the first battery cell 21 on the discharge conveyor line group 60 are arranged in a straight line, and the second battery cell 22 of the feed conveyor line group 10 and the second battery cell 22 on the discharge conveyor line group 60 are arranged in a straight line.

[0114] like Figure 3 As shown, as an example, a aligning device 80 is provided on the feed conveying line group 1 for aligning the position of the battery cells.

[0115] In this embodiment, a calibrating device 80 is provided on the third conveying line group 13, and the conveying rhythm is not tight, so that the calibrating device is close to the first table rotating mechanism 31, so as to prevent the battery cell from exceeding the compensation range of the graphic component in the subsequent process, and relatively save time. In another example, a calibrating device 80 is provided on the second conveying line group 12, the first conveying line group 11 is used for docking with the outside, the calibrating device 80 on the second conveying line group 12 is used to calibrate the position of the battery cell, and the third conveying line group 13 is used for precise positioning in place. The specific position setting of the calibrating device 80 can be set according to the actual situation, and there is no limitation here.

[0116] like Figure 4 As shown, a paper rolling mechanism 90 is provided on the rotating platform of the first table rotating mechanism 31, which is used to transfer the battery cell group 20 from the feeding conveying line group 10 to the first splicing station 411. The paper rolling mechanism 90 plays a conveying role, which is equivalent to a conveyor belt, but is flatter than a conveyor belt.

[0117] Specifically, a paper rolling mechanism 90 is provided on the rotating platform, and a movable and breathable paper 97 is carried on the paper rolling mechanism 90, which is used to flow the battery cells from the feeding conveying line group 10 or the adjacent table rotating mechanism into the rotating platform located at the feeding station to realize the transportation of the battery cells. The paper rolling mechanism 90 includes: an adsorption platform, an unwinding component and a rewinding component. The adsorption platform is provided with adsorption holes, and breathable paper is carried on the adsorption platform. The adsorption platform can adsorb the battery cells through the paper; the unwinding component is located below the adsorption platform, and one end of the paper is connected to the unwinding component; the rewinding component is located below the adsorption platform, and the other end of the paper is connected to the rewinding component; the paper 97 is released by the unwinding component and recovered by the rewinding component to realize the movement of the paper 97 on the adsorption platform, thereby driving the movement of the battery cells.

[0118] Furthermore, the unwinding assembly includes: an unwinding roller 91, a first driving member 92 and a first adjusting roller 93; one end of the paper 97 is wound around the unwinding roller 91; the first driving member 92 is located on the peripheral side of the unwinding roller 91, and its working end is connected to the unwinding roller 91 through a belt, so that the unwinding roller 91 rotates around its own axis to drive the paper 97 to be released from the unwinding roller 91; the first adjusting roller 93 is located between the unwinding roller 91 and the adsorption platform, and is used to adjust the tension of the paper 97 when it is released. The winding assembly includes: a winding roller 94, a second driving member 95 and a second adjusting roller 96. The other end of the paper 97 is wound around the winding roller 94. The second driving member 95 is located on the side of the winding roller 94. Its working end is connected to the winding roller 94 through a belt, so that the winding roller 94 rotates around its own axis. The rotation directions of the winding roller 94 and the unwinding roller 91 are opposite to each other, so as to drive the winding roller 94 to recycle the paper 97. The second adjusting roller 96 is located between the winding roller 94 and the adsorption platform, and is used to adjust the tension of the paper 97 when it is recycled. It should be noted here that the moving direction of the paper 97 needs to be compatible with the transmission inflow direction of the battery cell, and can be set according to the angle of the rotating platform, and no specific restrictions are made here.

[0119] A visual component (not shown) is provided on the first splicing station 411, and is used to take a picture and position the first battery cell 21 flowing into the first splicing station 411. The process flow to be performed at the first splicing station 411 includes splicing, taking a picture and positioning, data processing and rotation.

[0120] The first battery cell 21 is patterned at the first patterning station 421. Before the patterning, the patterning component is compensated and aligned in the X-axis, Y-axis and T-axis directions according to the positioning result of the visual component to achieve alignment between the graphic component and the first battery cell 21 to be patterned. The graphic component in this embodiment is a mask.

[0121] A paper rolling mechanism 90 is also provided on the rotating platform of the second table rotating mechanism 32 for transferring the battery cell group 20 from the first sheet discharging station 431 to the second sheet splicing station 412 .

[0122] The second splicing station 412 is also provided with a visual component (not shown in the figure), which is used to take pictures and position the second battery cell 21 flowing into the second splicing station 412. The process flow to be performed at the second splicing station 412 includes splicing, taking pictures and positioning, data processing and rotation.

[0123] The second battery cell 22 is patterned at the second patterning station 422. Before the patterning, the patterning component performs compensation alignment on the graphic components in the patterning component in the X-axis, Y-axis and T-axis directions based on the positioning results of the visual component to achieve alignment between the graphic components and the second battery cell 22 to be patterned.

[0124] In another example, the number N of cells included in the cell group 20 is greater than 3, that is, a corresponding number of table rotation mechanisms are provided, and a patterning group of each table rotation mechanism is used to perform patterning on one of the cells.

[0125] In a specific example, the table rotating mechanism is a turntable structure, and its driving device is specifically a drip motor, which is used to drive the entire table rotating mechanism to rotate. In this embodiment, the drip motor is preferably used. The drip motor has a fast speed and high precision. It is suitable for occasions with high precision requirements, compact mechanical structure, and multi-station coordination.

[0126] Embodiment 2

[0127] like Figure 5 As shown, this embodiment provides a single-sided solar cell patterning device. The single-sided solar cell patterning device in this embodiment is similar to that in the first embodiment, except that:

[0128] No paper rolling mechanism is provided on the rotating platforms of the first table rotating mechanism 31 and the second table rotating mechanism 32 , and the transportation of battery cells between the feeding conveying line group 1 and the first table rotating mechanism 31 , the first table rotating mechanism 31 and the second table rotating mechanism 32 , and the second table rotating mechanism 32 and the discharging conveying line group 60 is achieved by the rotating transport mechanism 70 .

[0129] Embodiment 3

[0130] like Figure 6 As shown, this embodiment provides a single-sided solar cell patterning device. The single-sided solar cell patterning device in this embodiment is similar to that in the first embodiment, except that:

[0131] The table rotating mechanism also includes two rotating platforms, one rotating platform is located at the film discharge station, and the other rotating platform is located at the reset station. The angle between any two adjacent rotating platforms is 90°. The film discharge station and the reset station are successively located downstream of the graphic processing station. The driving device is used to drive a rotating platform located at the film splicing station to rotate and move to the graphic processing station, a rotating platform located at the graphic processing station to rotate and move to the film discharge station, a rotating platform located at the film discharge station to rotate and move to the reset station, and a rotating platform located at the reset station to rotate and move to the film splicing station. The rotating platform on the previous film discharge station is set against the rotating platform of the next film splicing station.

[0132] Specifically, the number of processing stations M on the first table rotating mechanism 31 and the second table rotating mechanism 32 is 4, and the angle between any two adjacent processing stations, that is, the angle between the rotating platforms, is 90°. The processing stations of the first table rotating mechanism 31 sequentially include a first splicing station 411, a first graphic processing station 421, a first sheet discharging station 431, and a first resetting station 441. The processing stations of the second table rotating mechanism 32 sequentially include a second splicing station 412, a second graphic processing station 422, a second sheet discharging station 431, and a first resetting station 441. The first battery cell 21 on the feeding conveyor line group 10, the first splicing station 411, the first discharging station 431, the second splicing station 412, the second discharging station 431 and the discharging conveyor line group 60 are arranged in a straight line, and the feeding conveyor line group 10, the first splicing station 411, the first discharging station 431, the second splicing station 412, the second discharging station 431 and the second battery cell 22 on the discharging conveyor line group 60 are arranged in another straight line.

[0133] In this embodiment, the process flow to be performed at the first splicing station 411 and the second splicing station 412 includes splicing, photographing, positioning and rotating. The process flow to be performed at the first patterning station 421 and the second patterning station 422 includes processing positioning data, patterning and rotating.

[0134] like Figure 7 As shown, in one example, the number of processing stations M on the first table rotating mechanism 31 and the second table rotating mechanism 32 is 6, and the angle between any two adjacent processing stations, that is, the angle of the rotating platform is 60°. The processing stations of the first table rotating mechanism 31 include the first station 51, the second station 52, the third station 53, the fourth station 54, the fifth station and the sixth station in sequence. The first station 51 is used as a splicing station, the third station 53 is used as a graphic processing station, and the fifth station and the seventh station are used as reset stations.

[0135] The station layout of the second table rotating mechanism 32 is the same as that of the first table rotating mechanism 31, and will not be repeated here. The feeding conveying line group 1, the first station 51, the fourth station 54 of the first table rotating mechanism 31, the first station 51, the fourth station 54 of the second table rotating mechanism 32, and the first battery cell 21 on the discharging conveying line group 60 are arranged on a straight line, and the feeding conveying line group 1, the first station 51, the fourth station 54 of the first table rotating mechanism 31, the first station 51, the fourth station 54 of the second table rotating mechanism 32, and the second battery cell 22 on the discharging conveying line group 60 are arranged on another straight line.

[0136] like Figure 8As shown, in another example, there are 8 processing stations M on the first table rotating mechanism 31 and the second table rotating mechanism 32, and the angle between any two adjacent processing stations, that is, the angle between the rotating platforms, is 45°. The processing stations of the first table rotating mechanism 31 include the first station 51, the second station 52, the third station 53, the fourth station 54, the fifth station 55, the sixth station, the seventh station and the eighth station in sequence. The first station 51 is used as a splicing station, and the fourth station 54 is used as a graphic processing station. The process flow to be performed at the fourth station 54 includes graphic processing and rotation. The fifth station 55 is used as a film output station, and the sixth station, the seventh station and the eighth station are used as reset stations to complete an entire process on the table rotating mechanism and reset to the first station 51. Of course, some other process processing can also be set at the reset station, which can be set according to actual conditions and is not limited here.

[0137] The station layout of the second table rotating mechanism 32 is the same as that of the first table rotating mechanism 31, and will not be repeated here. The feeding conveying line group 10, the first station 51, the fifth station 55 of the first table rotating mechanism 31, the first station 51, the fifth station 55 of the second table rotating mechanism 32, and the first battery cell 21 on the discharging conveying line group 60 are arranged in a straight line, and the feeding conveying line group 10, the first station 51, the fifth station 55 of the first table rotating mechanism 31, the first station 51, the fifth station 55 of the second table rotating mechanism 32, and the second battery cell 22 on the discharging conveying line group 60 are arranged in a straight line.

[0138] The setting of multiple stations can calibrate the graphic components on the graphic processing stations in advance to increase the speed of the process flow. Other process flows can also be added to the extra stations. The specific number of processing stations can be set according to actual needs and is not limited here.

[0139] Embodiment 4

[0140] like Fig. 9 As shown, in this embodiment, a single-sided solar cell patterning device is provided. The single-sided solar cell patterning device in this embodiment is similar to the one in the third embodiment when there are four processing stations, except that:

[0141] No paper rolling mechanism 90 is provided on the rotating platforms of the first table rotating mechanism 31 and the second table rotating mechanism 32, and the transfer of battery cells between the feeding conveying line group 1 and the first table rotating mechanism 31, the first table rotating mechanism 31 and the second table rotating mechanism 32, and the second table rotating mechanism 32 and the discharging conveying line group 60 is achieved by the rotating transport mechanism 70.

[0142] Embodiment 5

[0143] This embodiment provides a single-sided solar cell patterning device. The single-sided solar cell patterning device in this embodiment is similar to that in the third embodiment, except that:

[0144] The single-sided solar cell patterning equipment also includes a detection mechanism (not shown in the figure) for detecting whether the cell is damaged after patterning. If damaged, the unqualified cell is removed at the reset station; if not damaged, the subsequent process flow is carried out normally.

[0145] When the number of processing stations M on the first table rotating mechanism 31 and the second table rotating mechanism 32 is 4, the detection device is disposed at the first sheet discharging station 431 and / or the second sheet discharging station 432 .

[0146] When the first discharging station 431 and the second discharging station 432 are both provided with detection mechanisms, the first battery cell 21 and the second battery cell 22 are respectively detected on the first table rotating mechanism 31 and the second table rotating mechanism 32 to see if they are damaged. If damaged, the two battery cells are transferred to the first reset station 441 or the second reset station 442 to be removed, and then the subsequent process flow is carried out. If there are no unqualified battery cells, the subsequent process flow is continued.

[0147] As an example, it is preferred that the detection mechanism is only set at the second discharging station 432 on the second table rotating mechanism 32. No matter the battery cells themselves are damaged or damaged during the transfer and graphic processing, they can be uniformly rejected before discharging, which is convenient for equipment layout and program writing.

[0148] When the number of processing stations M on the first table rotating mechanism 31 and the second table rotating mechanism 32 is 6 or 8, the detection device is arranged at the sheet discharging station, and the principle is similar to the above content, which will not be described in detail here.

[0149] Of course, the detection mechanism can also be set up at other workstations, all of which are used to remove unqualified battery cells.

[0150] Embodiment 6

[0151] This embodiment provides a screen printing device, which can be obtained by replacing the graphic component in any one of the first to fifth embodiments with a screen printing component.

[0152] Screen printing equipment can be used to prepare battery grid line patterns by screen printing silver paste on the battery cell and then sintering at high or low temperature to form ohmic contact electrodes between semiconductor and metal to guide out photogenerated carriers.

[0153] Embodiment 7

[0154] This embodiment provides a method for patterning a single-sided solar cell. The method is applicable to the single-sided solar cell patterning device described in any one of Embodiments 1 to 5. The method comprises:

[0155] S11: providing a single-sided solar cell patterning device as described in any one of embodiments 1 to 5;

[0156] S12: putting multiple battery cells into the feeding conveyor line group at the same time;

[0157] S13: Multiple battery cells on the feeding conveyor line group flow into the table rotating mechanism through the splicing station. When multiple battery cells arrive at the patterning station at the same time, the patterning component patterns one of the battery cells. Each table rotating mechanism patterns a different battery cell each time until all the battery cells are patterned.

[0158] The single-sided solar cell patterning device described in this embodiment can perform single-sided patterning processing on the cell group including a plurality of cells each time, thereby improving production efficiency, being suitable for mass production, relatively saving manpower and material resources, and reducing costs.

[0159] Embodiment 8

[0160] This embodiment provides a double-sided solar cell patterning device, the double-sided solar cell patterning device comprising:

[0161] Two single-sided solar cell patterning devices as described in any one of embodiments 1 to 5, and a flipping mechanism between the two solar cell patterning devices;

[0162] Single-sided solar cell patterning equipment is used to perform single-sided patterning on solar cells;

[0163] The flipping mechanism is used to flip multiple battery cells.

[0164] The flipping mechanism includes a cell flipping machine and several manipulators arranged on its edge. The multiple manipulators simultaneously take over multiple cells that have been patterned on one side from the discharge conveyor line group of the previous single-sided solar cell patterning equipment and perform vacuum adsorption. The cell flipping machine performs a 180° flip, flips the cell to the other side, and conveys it to the feed conveyor line group of the next single-sided solar cell patterning equipment for patterning on the back of the cell.

[0165] As an example, the conveyor line groups of the discharge conveyor line group before the flipping mechanism and the conveyor line groups of the feed conveyor line group after the flipping mechanism are reduced.

[0166] The number of transmission line groups can be reduced according to actual conditions and is not limited here.

[0167] Embodiment 9

[0168] This embodiment provides a method for patterning a bifacial solar cell. The method is applicable to the bifacial solar cell patterning device described in the eighth embodiment. The method comprises:

[0169] S21: providing the double-sided solar cell patterning device described in Example 8;

[0170] S22: placing multiple solar cells into the previous single-sided solar cell patterning device at the same time, and performing patterning on single sides of the multiple solar cells at the same time;

[0171] S23: feeding the plurality of battery cells that have been subjected to single-side patterning processing into a flipping mechanism, wherein the flipping mechanism flips the plurality of battery cells simultaneously;

[0172] S24: the flipped multiple solar cells are fed into another single-sided solar cell patterning device to pattern the other side of the multiple solar cells, so as to achieve double-sided patterning of the multiple solar cells at the same time.

[0173] The double-sided solar cell patterning device described in this embodiment can perform double-sided patterning processing on a cell group including multiple cells each time, thereby improving production efficiency, being suitable for mass production, relatively saving manpower and material resources, and reducing costs.

[0174] In summary, the present invention provides a single-sided and double-sided solar cell patterning device and a patterning method thereof, wherein the single-sided solar cell patterning device comprises: a feed conveying line group 10, a table rotating mechanism and a patterning component; the feed conveying line group is used to simultaneously convey multiple cells into the table rotating mechanism; the number of table rotating mechanisms matches the number of cells simultaneously conveyed on the feed conveying line group 10, and multiple table rotating mechanisms are arranged in sequence, and the table rotating mechanism comprises at least two rotating platforms, one rotating adsorption platform is located at a splicing station, and the other rotating adsorption platform is located at a patterning station, and the rotating adsorption platform is used to carry the cells; the table rotating mechanism also comprises a driving device, and the driving device is used to drive a rotating platform located at the splicing station to rotate and move to the patterning station, and another rotating platform located at the patterning station to rotate and move to the splicing station; the patterning component is arranged adjacent to the patterning station, and each patterning component only performs patterning on one cell carried on the rotating platform at a time. The single-sided solar cell patterning device of the present invention performs patterning on multiple cells by setting multiple cells at one time and using patterning components on multiple tabletop rotating mechanisms. Compared with the prior art of patterning one cell at a time, it saves manpower and material resources, reduces costs, and improves the efficiency of the patterning device to a certain extent, which can meet the needs of mass production. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0175] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A single-sided solar cell patterning device, characterized in that: The solar cell graphic device comprises: Feed conveyor line group, table rotation mechanism and graphic components; The feed conveyor line group is used to simultaneously convey multiple battery cells into the table rotating mechanism; The number of the table rotating mechanisms matches the number of battery cells conveyed simultaneously on the feeding conveyor line group, and a plurality of the table rotating mechanisms are arranged in sequence. The table rotating mechanisms include at least two rotating platforms, one of which is located at the sheet splicing station, and the other is located at the patterning station. The rotating platforms are used to carry battery cells; The table rotating mechanism further includes a driving device, the driving device is used to drive one of the rotating platforms located at the sheet joining station to rotate and move to the patterning station, and the other rotating platform located at the patterning station to rotate and move to the sheet joining station; The graphic component is disposed adjacent to the graphic processing station, and each graphic component performs graphic processing on only one battery sheet carried on the rotating platform at a time.

2. The single-sided solar cell patterning device according to claim 1, characterized in that: A paper rolling mechanism is provided on the rotating platform, on which movable and breathable paper is carried, for flowing the battery cells from the feeding conveying line group or the adjacent table rotating mechanism into the rotating platform located at the feeding station, so as to realize the transportation of the battery cells.

3. The single-sided solar cell patterning device according to claim 2, characterized in that: The paper rolling mechanism comprises: An adsorption platform, wherein adsorption holes are arranged on the adsorption platform, and air-permeable paper is carried on the adsorption platform, and the adsorption platform can adsorb the battery sheet through the paper; An unwinding assembly is located below the adsorption platform, and one end of the paper is connected to the unwinding assembly; A winding assembly is located below the adsorption platform, and the other end of the paper is connected to the winding assembly; The paper is released by the unwinding assembly and recovered by the rewinding assembly, so that the paper moves on the adsorption platform, thereby driving the battery sheet to move.

4. The single-sided solar cell patterning device according to claim 3, characterized in that: The unwinding assembly comprises: An unwinding roller, one end of the paper is wound around the unwinding roller; A first driving member, located at the peripheral side of the unwinding roller, a working end of which is connected to the unwinding roller through a belt, so that the unwinding roller rotates around its own axis to drive the paper to be released from the unwinding roller; A first adjusting roller, located between the unwinding roller and the adsorption platform, and used for adjusting the tension of the paper when it is released; The winding assembly comprises: A winding roller, on which the other end of the paper is wound; A second driving member is located at the periphery of the winding roller, and a working end thereof is connected to the winding roller through a belt, so that the winding roller rotates around its own axis, and the rotation directions of the winding roller and the unwinding roller are opposite, so as to drive the winding roller to recycle the paper; The second adjusting roller is located between the winding roller and the adsorption platform and is used for adjusting the tension of the paper during recycling.

5. The single-sided solar cell patterning device according to claim 1, characterized in that: A rotating transport mechanism is provided between the feed conveying line group and the table rotating mechanism and between any two adjacent table rotating mechanisms to realize the transportation of the battery cells.

6. The single-sided solar cell patterning device according to claim 1, characterized in that: The table rotating mechanism also includes a rotating platform, and this group of rotating platforms is located at the sheet discharging station, and the angle between any two adjacent rotating platforms is 120°. The sheet discharging station is located downstream of the patterning station, and the driving device is used to drive a rotating platform located at the sheet splicing station to rotate and move to the patterning station, a rotating platform located at the patterning station to rotate and move to the sheet discharging station, and a rotating platform located at the sheet discharging station to rotate and move to the sheet splicing station, and the rotating platform at the previous sheet discharging station is set against the rotating platform at the next sheet splicing station; Alternatively, the table rotating mechanism also includes two rotating platforms, one rotating platform is located at the film discharge station, and the other rotating platform is located at the reset station, the angle between any two adjacent rotating platforms is 90°, the film discharge station and the reset station are successively located downstream of the graphic processing station, and the driving device is used to drive one of the rotating platforms located at the film splicing station to rotate and move to the graphic processing station, one of the rotating platforms located at the graphic processing station to rotate and move to the film discharge station, one of the rotating platforms located at the film discharge station to rotate and move to the reset station, and one of the rotating platforms located at the reset station to rotate and move to the film splicing station, and the rotating platform on the previous film discharge station is set against the rotating platform of the next film splicing station.

7. The single-sided solar cell patterning device according to claim 6, characterized in that: The single-sided solar cell patterning device also includes any one of the following structures or a combination of two or more of them: (1) a detection component, which is located at the outgoing station and is used to detect whether the battery cell after patterning is damaged. If damaged, the unqualified battery cell is removed at the resetting station; If there is no damage, proceed with the subsequent process as normal; (2) A aligning device is provided on the feed conveyor line group for aligning the position of the battery cells; (3) a visual component, which is located at the wafer splicing station and is used to take pictures of the battery cells flowing into the wafer splicing station for positioning. Before patterning, the patterning component performs compensation alignment on the graphic components in the patterning component in the directions of the X-axis, Y-axis and T-axis according to the positioning result of the visual component, so as to achieve alignment between the graphic components and the battery cells to be patterned; (4) A discharge conveyor line group, located downstream of the table rotating mechanism, for simultaneously discharging multiple battery cells that have undergone graphic processing; the battery cells on the feed conveyor line group and the discharge conveyor line group are arranged on the same straight line.

8. The single-sided solar cell patterning device according to claim 1, characterized in that: The graphic components can be replaced with screen-printed components for use in screen printing.

9. A method for patterning a single-sided solar cell, characterized in that: The graphical method comprises: Put multiple battery cells into the feeding conveyor line group at the same time; The multiple battery cells on the feeding conveyor line group flow into the table rotating mechanism through the splicing station. When the multiple battery cells arrive at the patterning station at the same time, the patterning component patterns one of the battery cells. Each of the table rotating mechanisms patterns a different battery cell at a time until all the battery cells are patterned.

10. A double-sided solar cell patterning device, characterized in that: The double-sided solar cell patterning device comprises: Two single-sided solar cell patterning devices according to any one of claims 1 to 7, and a flipping mechanism between the two single-sided solar cell patterning devices; The single-sided solar cell patterning device is used to perform single-sided patterning on the cell; The flipping mechanism is used to flip multiple battery cells.

11. A method for patterning a double-sided solar cell, characterized in that: The graphical method comprises: Put multiple solar cells into a single-sided solar cell patterning device at the same time, and perform patterning on the single sides of the multiple solar cells at the same time; The plurality of battery cells which have been subjected to single-side patterning processing flow into a flipping mechanism, and the flipping mechanism flips the plurality of battery cells simultaneously; The flipped multiple solar cells flow into another single-sided solar cell patterning device, and the other side of the multiple solar cells is patterned to achieve double-sided patterning of the multiple solar cells at the same time.

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