Printing system and solar cell manufacturing production line

Abstract

The utility model relates to a printing system and a solar cell manufacturing production line. The printing system comprises a printing device which is provided with a printing area used for printing a battery piece; the conveying device comprises a conveying belt, and the conveying belt is used for conveying the battery pieces to a printing area; and the temporary storage piece is arranged on the bottom side of the conveying belt, a plurality of temporary storage cavities are sequentially formed in the temporary storage piece in the length direction of the temporary storage piece, and a plurality of inlets and outlets are formed in the top face of the temporary storage piece, correspond to the temporary storage cavities one by one and communicate with the temporary storage cavities. According to the printing system and the solar cell manufacturing production line, the reject ratio of the cells can be reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a printing system and a solar cell manufacturing production line. Background Technology

[0002] The final step in the production of solar cells is screen printing, which involves applying metal paste onto the cells using screen printing to form the electrode structures on the front and back sides of the cells.

[0003] Typically, solar cells are conveyed to the printing area via a conveyor belt for screen printing. During this process, if the conveyor belt vibrates abnormally, it can easily cause cell blockage. In on-site operations, workers usually remove the solar cells from the conveyor belt and stack them before troubleshooting the conveyor belt. However, the friction between stacked and adjacent solar cells can easily cause scratches, increasing the defect rate. Utility Model Content

[0004] Therefore, it is necessary to provide a printing system and solar cell manufacturing production line that can reduce the defect rate of solar cells to address the above problems.

[0005] A printing system, the printing system comprising:

[0006] A printing apparatus having a printing area for printing battery cells;

[0007] A conveying device includes a conveyor belt for conveying the battery cells to the printing area; and

[0008] A temporary storage component is disposed on the bottom side of the conveyor belt. The temporary storage component has multiple temporary storage cavities arranged sequentially along its length. The top surface of the temporary storage component has multiple inlets and outlets, which correspond to and communicate with the temporary storage cavities one by one.

[0009] In some embodiments, the temporary storage component is a foam plastic component.

[0010] In some embodiments, the temporary storage component includes a foam plastic box and a plurality of foam plastic partitions. The foam plastic box has a receiving cavity, and the top surface of the foam plastic box has an opening communicating with the receiving cavity. All the foam plastic partitions are located in the receiving cavity and divide the receiving cavity into a plurality of the temporary storage cavities, and divide the opening into a plurality of the inlets and outlets.

[0011] In some embodiments, the top surface of the foam partition is flush with the top surface of the foam box.

[0012] In some embodiments, the outer peripheral side of the foam plastic box is recessed to form a groove, the groove being located between the top and bottom surfaces of the foam plastic box and arranged circumferentially around the foam plastic box.

[0013] In some embodiments, the outer peripheral side of the foam plastic box is recessed and forms a protrusion protruding from the inner wall of the temporary storage cavity.

[0014] In some embodiments, the foam plastic box body and the foam plastic partition are integrally formed.

[0015] In some embodiments, the temporary storage component further includes tape that is adhered to and covers the top surface of the foam plastic box, the top end of the outer peripheral surface of the foam plastic box connected to its top surface, the top surface of the foam plastic partition, and the top end of the inner peripheral side surface of the temporary storage cavity connected to the top surface of the foam plastic box and the top surface of the foam plastic partition.

[0016] In some embodiments, the conveying device further includes a mounting frame, a conveying motor, a drive pulley, a drive shaft, a driven pulley, a conveying belt, multiple drive pulleys, multiple driven pulleys, and multiple conveying belts. The conveying motor and the drive shaft are both mounted on the mounting frame, and the conveying motor is connected to the drive pulley. The driven pulley and the drive pulley are both sleeved and fixed on the drive shaft. The conveying belt is sleeved on the drive pulley and the driven pulley. Each drive pulley and the driven pulley corresponds to a conveying belt. The conveying belt is sleeved on the corresponding drive pulley and the driven pulley, and all the conveying belts are spaced apart along a direction intersecting the conveying direction of the battery cells.

[0017] A solar cell manufacturing production line includes a printing system as described in any one embodiment.

[0018] Compared with the prior art, this application has the following beneficial effects:

[0019] The aforementioned printing system and solar cell manufacturing production line, by setting up temporary storage components, can temporarily store solar cells on the conveyor belt when the conveyor belt fails. Since each temporary storage chamber stores only one solar cell at a time, it can achieve single-cell placement. Compared with the stacked placement in the prior art, it can avoid the solar cells from being scratched or detached due to stacking, thus reducing the defect rate of the cells. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the printing system in one embodiment of this application;

[0021] Figure 2 for Figure 1The diagram shows the structure of the temporary storage component of the printing system.

[0022] Icon labels:

[0023] 100. Printing system;

[0024] 10. Conveying device; 20. Temporary storage component; 30. Printing device;

[0025] 11. Mounting bracket; 12. Drive pulley; 13. Drive belt; 14. Drive shaft; 15. Driven pulley; 16. Driven conveyor pulley; 17. Conveyor belt; 18. Driven conveyor pulley;

[0026] 21. Foam plastic box; 211. Temporary storage cavity; 212. Receiving cavity; 213. Inlet / outlet; 214. Opening; 215. Groove; 216. Protrusion; 22. Foam plastic partition; 23. Adhesive tape;

[0027] 31. Printing area. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] The final step in the production of solar cells is screen printing, which involves applying metal paste onto the cells using screen printing to form the electrode structures on the front and back sides of the cells.

[0035] Typically, solar cells are conveyed to the printing area via a conveyor belt for screen printing. During this process, if the conveyor belt vibrates abnormally, it can easily cause cell blockage. In on-site operations, workers usually remove the solar cells from the conveyor belt and stack them before troubleshooting the conveyor belt. However, the friction between stacked and adjacent solar cells can easily cause scratches, increasing the defect rate.

[0036] Please see Figure 1 and Figure 2To alleviate the aforementioned problems, the applicant, after in-depth research, designed a printing system 100. The printing system 100 is used for screen printing on solar cells to form electrode structures on the solar cells. The printing system 100 includes a conveying device 10, a temporary storage unit 20, and a printing device 30. The conveying device 10 is used to transport the solar cells to the printing device 30 for printing. The temporary storage unit 20 temporarily stores the solar cells when the conveying device 10 malfunctions.

[0037] The printing apparatus 30 has a printing area 31 for printing battery cells, and the conveying device 10 includes a conveyor belt 17 for conveying the battery cells to the printing area 31 for printing. A temporary storage member 20 is disposed on the bottom side of the conveyor belt 17, and the temporary storage member 20 has a spacer along its length (e.g., ...). Figure 2 Multiple temporary storage cavities 211 are arranged sequentially (as indicated by the middle arrow A). Multiple inlets and outlets 213 are opened on the top surface of the temporary storage component 20. The inlets and outlets 213 correspond one-to-one with the temporary storage cavities 211 and are connected.

[0038] The printing device 30 and the conveying device 10 are both conventional technologies in the field, and therefore will not be described in detail here.

[0039] As an example, the conveying device 10 also includes a mounting frame 11, a conveying motor, a drive pulley 12, a drive shaft 14, a driven pulley 15, a conveying belt 13, multiple drive pulleys 16, multiple driven pulleys 18, and multiple conveying belts 17. The conveying motor and drive shaft 14 are both mounted on the mounting frame 11, and the conveying motor is connected to the drive pulley 12. The driven pulleys 15 and drive pulleys 16 are both fitted onto and fixed to the drive shaft 14. The conveying belt 13 is fitted onto the drive pulleys 12 and 15. Each drive pulley 16 and driven pulley 18 corresponds to a conveying belt 17, and each conveying belt 17 is fitted onto its corresponding drive pulley 16 and driven pulley 18. All conveying belts 17 are aligned with the direction of conveying the battery cells (e.g., ...). Figure 1 The direction of intersection (as indicated by the middle arrow X) (e.g.) Figure 1 (Indicated by the middle arrow Y) Interval arrangement.

[0040] For example, all conveyor belts 17 are arranged at intervals along a direction perpendicular to the conveying direction of the battery cells, and the arrangement direction of all conveyor belts 17 is one of the width direction and the length direction of the battery cells, while the conveying direction of the battery cells is the other of the width direction and the length direction of the battery cells. The specific arrangement direction can be set according to the requirements.

[0041] In actual operation, the conveyor motor works, and its power is transmitted to the conveyor belt 17 through the drive pulley 12, the drive belt 13, the drive shaft 14, the driven pulley 15, and the drive pulley 16 to transport the battery cells.

[0042] By configuring the drive pulley 12, drive shaft 14, driven pulley 15, and drive belt 13, the power from the same conveyor motor can be transmitted to multiple conveyor belts 17. This design reduces the number of conveyor motors required, which helps to lower the manufacturing cost of the printing system 100. The arrangement of multiple drive pulleys 16, multiple driven pulleys 18, and multiple conveyor belts 17, working together, allows for the transport of the same solar cell, thereby improving the stability of the cell transport. The conveying device 10, temporary storage unit 20, and printing device 30 can all be installed on the floor of the production workshop, or on other load-bearing structures such as platforms or frames specifically designed to support the conveying device 10, temporary storage unit 20, and printing device 30.

[0043] The temporary storage unit 20 has multiple storage cavities and multiple inlets / outlets 213 corresponding to each storage cavity. Workers can place or remove battery cells into the temporary storage cavities 211 through the inlets / outlets 213. As an example, the multiple temporary storage cavities 211 can be along the length or width direction of the temporary storage unit 20 (e.g., ...). Figure 2 The settings (indicated by arrow B) can be configured as needed. Preferably, multiple temporary storage cavities 211 are arranged along the length of the temporary storage component 20, thereby facilitating the setting of a larger number of temporary storage cavities 211.

[0044] When the battery cell is inserted into the temporary storage cavity 211, the length direction of the battery cell is approximately aligned with the depth direction of the temporary storage cavity 211, the width direction of the battery cell is approximately aligned with the length direction of the temporary storage cavity 211, and the thickness direction of the battery cell is approximately aligned with the width direction of the temporary storage cavity 211. Furthermore, the length of the temporary storage cavity 211 is greater than the width of the battery cell, the depth of the temporary storage cavity 211 is less than the length of the battery cell, and the width of the temporary storage cavity 211 is greater than the thickness of the battery cell. This allows the battery cell to be easily inserted into or removed from the temporary storage cavity 211. Moreover, after insertion, a portion of the battery cell along its length direction protrudes outside the temporary storage member 20, facilitating the removal of the battery cell and reducing the likelihood of chipping or missing corners during removal, thus lowering the defect rate of the battery cell.

[0045] For example, the depth of the temporary storage cavity 211 is less than 10 cm to 15 cm relative to the length of the battery cell, and the length of the temporary storage cavity 211 is greater than 5 cm to 10 cm relative to the width of the battery cell.

[0046] In actual operation, conveyor belt 17 transports the solar cells to the printing area 31 of the printing device 30 for printing. When a malfunction occurs in conveyor belt 17, causing the solar cells on it to become clogged, the operator manually removes the solar cells from conveyor belt 17 and inserts them one by one into the respective storage chambers 211, and then troubleshoots the conveyor belt 17. It is worth mentioning that each storage chamber 211 stores only one solar cell at a time.

[0047] By setting up a temporary storage component 20, the battery cells on the conveyor belt 17 can be temporarily stored when the conveyor belt 17 fails. Since each temporary storage cavity 211 stores only one battery cell at a time, single-cell placement can be achieved. Compared with the stacked placement in the prior art, this can avoid the occurrence of scratches or grid detachment of battery cells due to stacking, and reduce the defect rate of battery cells.

[0048] In some embodiments, the temporary storage member 20 is a foam plastic component. The foam plastic component is lightweight and elastic, and when the battery cell is placed inside it, the possibility of impact and damage between the battery cell and the temporary storage member 20 is small, so that the battery cell can maintain its integrity during temporary storage and will not be damaged.

[0049] Furthermore, in some embodiments, the temporary storage component 20 includes a foam plastic box 21 and a plurality of foam plastic partitions 22. The foam plastic box 21 has a receiving cavity 212, and the top surface of the foam plastic box 21 has an opening 214 communicating with the receiving cavity 212. All the foam plastic partitions 22 are located within the receiving cavity 212, dividing the receiving cavity 212 into a plurality of temporary storage cavities 211, and dividing the opening 214 into a plurality of inlets and outlets 213. This method of forming the temporary storage cavities 211 and the inlets and outlets 213 is simple and reliable.

[0050] For example, the foam plastic partition 22 and the foam plastic box 21 are formed separately and connected by adhesive bonding. Preferably, the foam plastic box 21 and the foam plastic partition 22 are formed integrally. This design reduces the operation of assembling the foam plastic box 21 and the foam plastic partition 22, which helps to improve the assembly efficiency of the printing system 100.

[0051] Furthermore, in some embodiments, the top surface of the foam plastic partition 22 is flush with the top surface of the foam plastic box 21. On the one hand, the foam plastic partition 22 does not protrude from the foam plastic box 21, reducing the risk of scratches and decreasing the volume of the temporary storage component 20. On the other hand, the foam plastic partition 22 is flush with the top surface of the foam plastic box 21 in the height direction (e.g., ...). Figure 2 The part indicated by the middle arrow C has a greater height, and after being molded with the foam plastic box 21, it has stronger mechanical strength.

[0052] In some embodiments, the outer peripheral side of the foam plastic box 21 is recessed to form a groove 215, which is located between the top and bottom surfaces of the foam plastic box 21 and is arranged around the circumference of the foam plastic box 21.

[0053] The outer periphery of the foam plastic box 21 refers to the foam plastic box 21 along its length (e.g., Figure 2 The two outer sides (pointed to by the middle arrow A) are arranged opposite each other (one of the outer sides is as follows) Figure 2 (as indicated by the middle arrow E), and the foam plastic box 21 along its width direction (e.g. Figure 2 The two outer surfaces (pointed to by the middle arrow B) are arranged opposite each other (one of the outer surfaces is as follows) Figure 2 The set (pointed to by the middle arrow D).

[0054] The groove 215 is an annular groove that surrounds the foam plastic box 21. By setting the groove 215, the foam plastic box 21 can be easily moved by hooking fingers into the groove 215 during actual operation, so as to facilitate the transfer of the foam plastic box 21 and make it convenient for the staff to load the battery cells to the appropriate position on the conveyor belt 17 after troubleshooting.

[0055] In some embodiments, the outer peripheral side of the foam plastic box 21 is recessed and forms a protrusion 216 protruding from the inner wall of the temporary storage cavity 211.

[0056] Therefore, after the battery cell is placed in the temporary storage cavity 211, the battery cell only contacts the protrusion 216, the contact area between the battery cell and the foam plastic box 21 is reduced, the area where friction occurs between the battery cell and the foam plastic box 21 is also reduced, the possibility of the battery cell being scratched due to friction is also reduced, and the yield of the battery cell is improved.

[0057] In some embodiments, the temporary storage component 20 further includes tape 23, which is adhered to and covers the top surface of the foam plastic box 21, the top end of the outer peripheral surface of the foam plastic box 21 connected to its top surface, the top surface of the foam plastic partition 22, and the top end of the inner peripheral side surface of the temporary storage cavity 211 connected to the top surface of the foam plastic box 21 and the top surface of the foam plastic partition 22.

[0058] The inner circumferential sides of the temporary storage cavity 211 are two inner sides of the foam plastic box 21 arranged opposite each other along its width direction (one of the inner sides is as follows). Figure 2 The area indicated by the middle arrow F, and the two sides of the adjacent foam plastic partitions 22 arranged opposite each other along the length of the foam plastic box 21 (one side is as shown in the image). Figure 2 The set indicated by the middle arrow H), or a portion of the two inner sides of the foam plastic box 21 arranged opposite each other along its width direction, or the inner sides of the foam plastic box 21 arranged along its length direction (one of the inner sides being as shown in the image). Figure 2The collection of the sides of the foam plastic partition 22 facing the inner side (as indicated by the middle arrow G).

[0059] During the insertion of the temporary storage component 20 into the temporary storage cavity 211, for example, due to hand tremors or misalignment, the battery cell may easily rub against at least one of the following: the top surface of the foam plastic box 21, the top tip of the outer peripheral surface of the foam plastic box 21 connected to its top surface, the top surface of the foam plastic partition 22, or the top tip of the inner peripheral side of the temporary storage cavity 211 connected to the top surface of the foam plastic box 21 or the top surface of the foam plastic partition 22. This can cause damage to at least one of the foam plastic box 21 or the foam plastic partition 22, resulting in droplets. These droplets can adhere to the battery cell and, during subsequent printing, easily lead to printing defects.

[0060] In this application, by designing tape 23 to be pasted and covered on the top surface of the foam plastic box 21, the top of the outer peripheral surface of the foam plastic box 21 connected to its top surface, the top surface of the foam plastic partition 22, and the top of the inner peripheral side of the temporary storage cavity 211 connected to the top surface of the foam plastic box 21 and the top surface of the foam plastic partition 22, the battery cells will only come into contact with the tape 23 during the insertion process, even if the hand shakes or the alignment is off, the battery cells will have a low probability of forming droplets, thus maintaining the cleanliness of the battery cell surface, which is conducive to subsequent printing and has a better printing effect.

[0061] This application also provides a solar cell manufacturing production line, which includes the printing system 100 as described in any of the above embodiments. The solar cell manufacturing production line of this application has the effects of any of the above embodiments, and therefore will not be described again here.

[0062] The aforementioned printing system 100 and solar cell manufacturing production line, by setting up a temporary storage component 20, can temporarily store the solar cells on the conveyor belt 17 when the conveyor belt 17 fails. Since each temporary storage cavity 211 stores only one solar cell at a time, it can achieve single-cell placement. Compared with the stacked placement in the prior art, it can avoid the solar cells from being scratched or detached due to stacking, thus reducing the defect rate of the cells.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A printing system, characterized by, The printing system includes: The printing device (30) has a printing area (31) for printing battery cells; A conveying device (10) includes a conveyor belt (17) for conveying the battery cells to the printing area (31); and A temporary storage component (20) is disposed on the bottom side of the conveyor belt (17). The temporary storage component (20) has a plurality of temporary storage cavities (211) arranged sequentially along its length. The top surface of the temporary storage component (20) is provided with a plurality of inlets and outlets (213). The inlets and outlets (213) correspond one-to-one with the temporary storage cavities (211) and are connected.

2. The printing system of claim 1, wherein, The temporary storage component (20) is a foam plastic component.

3. The printing system of claim 2, wherein, The temporary storage component (20) includes a foam plastic box (21) and a plurality of foam plastic partitions (22). The foam plastic box (21) has a receiving cavity (212), and the top surface of the foam plastic box (21) has an opening (214) communicating with the receiving cavity (212). All the foam plastic partitions (22) are located in the receiving cavity (212) and divide the receiving cavity (212) to form a plurality of temporary storage cavities (211), and divide the opening (214) to form a plurality of inlets and outlets (213).

4. The printing system of claim 3, wherein, The top surface of the foam plastic partition (22) is flush with the top surface of the foam plastic box (21).

5. The printing system of claim 3, wherein, The outer peripheral side of the foam plastic box (21) is recessed to form a groove (215). The groove (215) is located between the top and bottom surfaces of the foam plastic box (21) and is arranged around the circumference of the foam plastic box (21).

6. The printing system of claim 5, wherein, The outer peripheral side of the foam plastic box (21) is recessed and forms a protrusion (216) protruding from the inner wall of the temporary storage cavity (211).

7. The printing system of claim 3, wherein, The foam plastic box (21) and the foam plastic partition (22) are integrally formed.

8. The printing system of claim 3, wherein, The temporary storage component (20) also includes tape (23), which is attached to and covers the top surface of the foam plastic box (21), the top end of the outer peripheral surface of the foam plastic box (21) connected to its top surface, the top surface of the foam plastic partition (22), and the top end of the inner peripheral side of the temporary storage cavity (211) connected to the top surface of the foam plastic box (21) and the top surface of the foam plastic partition (22).

9. The printing system of claim 1, wherein, The conveying device (10) further includes a mounting frame (11), a conveying motor, a drive pulley (12), a drive shaft (14), a driven pulley (15), a drive belt (13), multiple drive pulleys (16), multiple driven pulleys (18), and multiple conveyor belts (17). The conveying motor and the drive shaft (14) are both mounted on the mounting frame (11), and the conveying motor is connected to the drive pulley (12). The driven pulley (15) and the drive pulley are also connected to the drive pulley. (16) are all sleeved and fixed on the drive shaft (14), the drive belt (13) is sleeved on the drive drive wheel (12) and the drive driven wheel (15), the conveying drive wheel (16) and the conveying driven wheel (18) are all corresponding to the conveyor belt (17), the conveyor belt (17) is sleeved on the corresponding conveying drive wheel (16) and the conveying driven wheel (18), and all the conveyor belts (17) are spaced apart along the direction intersecting with the conveying direction of the battery cells.

10. A solar cell manufacturing line characterized by comprising: Includes the printing system as described in any one of claims 1 to 9 above.

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