Main-grid-free photovoltaic module welding strip pre-fixing device

Abstract

The utility model belongs to the technical field of photovoltaic module processing, and discloses a main-grid-free photovoltaic module welding strip pre-fixing device, which comprises a supporting piece, a fixing piece and a fixing piece, the punching assembly is installed on the supporting piece and used for forming a circular groove in the back face of the battery piece; the driving assembly is installed on the supporting piece and can drive the supporting piece to move in the vertical direction; the glue injection assembly is mounted on the supporting piece and used for injecting glue into the circular groove; and the curing assembly is mounted on the supporting piece and is used for increasing the glue curing speed. The mode that the welding strip and the battery piece are connected and fixed through the glue can avoid generation of a large amount of heat, the situation that the battery piece is greatly warped is avoided, the warpage degree of the battery piece is reduced, the glue curing speed is increased by arranging the curing assembly, and the time for connecting and fixing the welding strip and the battery piece can be shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic module processing, and particularly relates to a pre-fixing device for solder tapes of a main-gridless photovoltaic module. Background Art

[0002] At present, the cell interconnection technology is mainly divided into two methods: with main grid and without main grid. Conventional welding methods are usually used for main-grid cells, and flux is coated on the solder tape or the cell by means of immersion, spraying, etc., and alloy interconnection is realized in a welding machine. The implementation method of the main-gridless technology is to pre-fix the solder tape on the cell first, and then realize welding in a laminator. By this way, a main-gridless photovoltaic module can be manufactured.

[0003] In the prior art, in the process of pre-fixing the solder tape on the cell, the conventional method is to use infrared heating to pre-fix the solder tape on the cell. In this process, infrared heating transfers heat to the solder tape and the cell through radiation. When heated to a certain temperature, the solder tape will soften and flow, forming a connection with the cell surface; during the cooling process, since the solder tape and the cell may have different coefficients of thermal expansion, their shrinkage degrees during cooling may be different. If the shrinkage force of the solder tape is greater than other parts of the cell, it may cause local warping of the cell; cell warping not only affects the product appearance, but may also lead to uneven internal stress distribution in the cell, thereby affecting the performance of the cell. In addition, warping may also affect subsequent production processes, such as lamination, encapsulation, etc. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a pre-fixing device for solder tapes of a main-gridless photovoltaic module to solve the problems in the above background art.

[0005] To solve the above technical problems, the utility model provides a pre-fixing device for solder tapes of a main-gridless photovoltaic module, including:

[0006] A support member;

[0007] A punching component, installed on the support member, for opening a circular groove on the back of the cell;

[0008] A driving component, installed on the support member, capable of driving the support member to move in the vertical direction;

[0009] A glue injection component, installed on the support member, for injecting glue into the circular groove;

[0010] And a curing component, installed on the support member, for increasing the curing speed of the glue.

[0011] Through such a design, the situation of large-scale warping of the cell is avoided, thereby reducing the degree of cell warping.

[0012] Preferably, the punching assembly includes a plurality of punching members, each punching member is installed on the support member, and the punching members are distributed in a square array.

[0013] With such a design, it can meet different punching requirements.

[0014] Preferably, the punching member is set as a punching machine.

[0015] With such a design, it is convenient to understand the punching member.

[0016] Preferably, the driving assembly includes two driving mechanisms symmetrically distributed. Along the length direction of the support member, the two driving mechanisms are respectively arranged on both sides of the support member and are both connected to the support member.

[0017] With such a design, when structures such as the punching assembly and the glue injection assembly are relatively heavy, it is more stable to use two driving mechanisms to cooperate for support.

[0018] Preferably, each driving mechanism includes a driving member and a driving part connected to the driving member. The driving member can drive the driving part to move in the vertical direction, the driving part is connected to the support member, the support member has an axis extending along its own length direction, and the driving part can drive the support member to rotate around its own axis.

[0019] With such a design, it provides convenience for achieving the purpose that the structures at different positions on the support member face the battery cell.

[0020] Preferably, along the thickness direction of the support member, the punching assembly and the glue injection assembly are symmetrically arranged, and the driving part can realize the position interchange of the punching assembly and the glue injection assembly by driving the support member to rotate around its own axis.

[0021] With such a design, it can avoid adjusting the position of the battery cell after each punching operation and after each glue injection operation.

[0022] Preferably, a support platform is provided on one side of the support member, and the support platform is used to separate the battery cell from the ground.

[0023] With such a design, it can avoid more dust and other sundries adhering to the surface of the battery cell.

[0024] Preferably, an enclosing member is connected to the support platform, and the support platform and the enclosing member enclose to form a fixing groove for fixing the battery cell.

[0025] With such a design, it can avoid situations such as the punching accuracy being affected due to the movement of the battery cell.

[0026] Preferably, it further includes a control member, which is electrically connected to the punching assembly, the driving assembly, the glue injection assembly and the curing assembly, and is used to control the operation of the punching assembly, the driving assembly, the glue injection assembly and the curing assembly.

[0027] Through such a design, manual operations are reduced.

[0028] Preferably, the curing assembly includes at least one curing lamp, and the curing lamp is installed on the support member and is disposed close to the glue injection assembly.

[0029] Through such a design, it is convenient to understand the curing assembly.

[0030] The beneficial effects of the present utility model: Compared with the method of connecting and fixing the welding tape and the battery cell by using an infrared heating method, the present utility model uses glue to connect and fix the welding tape and the battery cell, so as to avoid generating a large amount of heat, thereby avoiding the situation of large-scale warping of the battery cell, and thus reducing the degree of warping of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic structural diagram of a welding tape pre-fixing device for a main-grid-free photovoltaic module according to an embodiment of the present utility model;

[0033] Figure 2 is Figure 1 A schematic structural diagram after omitting the driving member;

[0034] Figure 3 It is a schematic partial structural diagram of a welding tape pre-fixing device for a main-grid-free photovoltaic module according to an embodiment of the present utility model;

[0035] Figure 4 It is a schematic connection state diagram of the support table and the enclosing member according to an embodiment of the present utility model.

[0036] The reference numerals are as follows:

[0037] 1. Support member;

[0038] 2. Punching assembly; 21. Punching member;

[0039] 3. Driving assembly; 31. Driving mechanism; 311. Driving member; 312. Driving part;

[0040] 4. Glue injection assembly;

[0041] 5. Curing assembly; 51. Curing lamp;

[0042] 6. Support table;

[0043] 7. Enclosing member;

[0044] 8. Control member;

[0045] 9. Fixed groove.

[0046] In the drawings, like parts are designated by like reference numerals. The drawings are not drawn to scale. Detailed implementation manners

[0047] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0048] Embodiment 1

[0049] As Figures 1 to 4 shown, the present utility model provides a pre-fixing device for the welding tape of a main-gridless photovoltaic module, including:

[0050] Support member 1;

[0051] Punching component 2, installed on the support member 1, for opening a circular groove on the back of the battery cell;

[0052] Driving component 3, installed on the support member 1, capable of driving the support member 1 to move in the vertical direction;

[0053] Glue injection component 4, installed on the support member 1, for injecting glue into the circular groove;

[0054] And curing component 5, installed on the support member 1, for increasing the curing speed of the glue.

[0055] The process of pre-fixing the welding tape is as follows: Place the battery cell with its back facing up. The punching component 2 opens a circular groove on the back of the battery cell, then the glue injection component 4 injects glue into the circular groove, then the welding tape is arranged in contact with the back of the battery cell to cover at least part of the opening area of the circular groove, and then the curing component 5 increases the curing speed of the glue. Thus, the pre-fixing process of the welding tape is completed. Subsequently, the layer press can be used to perform fusion welding on the welding tape on the back of the battery cell, so that the welding tape and the battery cell form a firm main-gridless photovoltaic module.

[0056] During the process of pre-fixing the welding tape, the driving component 3 drives the support member 1 to move in the vertical direction, thereby realizing the operations of the punching component 2, the glue injection component 4, and the curing component 5 approaching and moving away from the battery cell.

[0057] It should be noted that the above process can be directly controlled by an operator, or directly controlled by a control device such as a controller, or jointly controlled by the operator and a control device such as a controller.

[0058] Compared with using the infrared heating method to connect and fix the welding tape to the battery cell, the method of using glue to connect and fix the welding tape to the battery cell can avoid generating a large amount of heat, thereby avoiding the situation of significant warping of the battery cell, reducing the degree of warping of the battery cell, and by setting the curing component 5 to increase the curing speed of the glue, the time for connecting and fixing the welding tape to the battery cell can also be shortened.

[0059] It should be noted that for the structures connected within the present utility model, when not emphasized as fixedly connected, the connected structures are regarded as separable, such as being connected by means of threaded connection or the like.

[0060] Regarding the welding tape, the welding tape is used as a connecting component between battery cells, mainly playing the role of conducting electricity. It can effectively transmit the current generated by the battery cells to the next battery cell until the entire battery string or battery pack, thereby ensuring the current output of the entire photovoltaic module.

[0061] Embodiment 2

[0062] In this embodiment, the punching component 2 includes a plurality of punching members 21, each punching member 21 is installed on the support member 1, and the punching members 21 are distributed in a square array.

[0063] For the punching component 2, the punching member 21 therein is the actual punching structure. By setting a plurality of punching members 21, a plurality of circular grooves can be opened on the back of the battery cell at the same time to meet different punching requirements, and the punching member 21 can be separably arranged from the support member 1.

[0064] When the punching members 21 are distributed in a square array, multiple groups of circular grooves distributed in parallel can be opened on the back of the battery cell, which better meets the requirements for punching the battery cell in most cases.

[0065] Embodiment 3

[0066] In this embodiment, the punching member 21 is set as a punching machine.

[0067] The punching member 21 can be set as various specific single structures or combined structures. In this embodiment, it is set as a punching machine, and the punching machine is set as an automatic punching device, eliminating the need for an operator to hold it for punching.

[0068] Embodiment 4

[0069] In this embodiment, the driving component 3 includes two driving mechanisms 31 distributed symmetrically. Along the length direction of the support member 1, the two driving mechanisms 31 are respectively arranged on both sides of the support member 1 and are both connected to the support member 1.

[0070] The support member 1 supports structures such as the punching assembly 2. The support member 1 is driven and supported by the driving assembly 3. Specifically, it is driven and supported by two symmetrically distributed driving mechanisms 31. When structures such as the punching assembly 2 and the glue injection assembly 4 are heavy, it is more stable to use two driving mechanisms 31 for combined support.

[0071] Embodiment 5

[0072] In this embodiment, each driving mechanism 31 includes a driving member 311 and a driving part 312 connected to the driving member 311. The driving member 311 can drive the driving part 312 to move in the vertical direction. The driving part 312 is connected to the support member 1. The support member 1 has an axis extending along its own length direction. The driving part 312 can drive the support member 1 to rotate around its own axis.

[0073] Optionally, the driving member 311 is set as an electric slide table; the driving part 312 is set as a driving motor. The driving member 311 and the driving part 312 can also be set as other driving devices, which will not be further elaborated here.

[0074] As mentioned above, the driving assembly 3 drives the support member 1 to move in the vertical direction, so as to realize the operations of the punching assembly 2, the glue injection assembly 4, and the curing assembly 5 approaching and departing from the battery cell. Specifically, this operation is realized by the cooperation of two driving members 311, and the two driving parts 312 can cooperate to drive the support member 1 to rotate around its own axis, thus facilitating the purpose of making the structures at different positions on the support member 1 face the battery cell.

[0075] Embodiment 6

[0076] In this embodiment, along the thickness direction of the support member 1, the punching assembly 2 and the glue injection assembly 4 are symmetrically arranged. The driving part 312 can realize the position exchange of the punching assembly 2 and the glue injection assembly 4 by driving the support member 1 to rotate around its own axis.

[0077] Optionally, the glue injection assembly 4 includes at least one glue injection member. The glue injection member can be set as multiple according to the actual situation; the glue injection member can be set as an existing small glue injection machine, or a combination of existing multiple structures can be adopted. For example, a small air cylinder and a syringe can be set to cooperate. The small air cylinder pushes the piston of the syringe so that the glue is injected into the circular groove. At this time, it is necessary to pay attention to the curing situation of the glue in the syringe, and a light-shielding structure such as a light-shielding film can be set outside the syringe.

[0078] In this embodiment, along the thickness direction of the support member 1, the punching assembly 2 and the glue injection assembly 4 are symmetrically arranged. At this time, in the initial situation, the punching assembly 2 faces the battery cell, and the glue injection assembly 4 is arranged away from the battery cell. After the punching assembly 2 completes the punching operation, the driving part 312 drives the support member 1 to rotate around its own axis to realize the position exchange between the punching assembly 2 and the glue injection assembly 4, and then the glue injection assembly 4 can approach the battery cell to complete the glue injection operation. Through the above settings, on the one hand, on the basis of quickly approaching and moving away from the battery cell for the punching assembly 2 and the glue injection assembly 4, it can be avoided that the punching assembly 2 and the glue injection assembly 4 cannot be installed on the support member 1 at the same time due to their body size problems. For example, when the punching assembly 2 needs to include multiple punching parts 21 and the glue injection assembly 4 needs to include multiple glue injection parts. On the other hand, it can be avoided to adjust the position of the battery cell after each punching operation and after each glue injection operation, reducing manual operation and improving the pre-fixing progress.

[0079] Embodiment 7

[0080] In this embodiment, a support platform 6 is provided on one side of the support member 1, and the support platform 6 is used to separate the battery cell from the ground.

[0081] When the support platform 6 works, it is attached to the ground and is arranged directly below the support member 1. The support platform 6 can be set to a heavier structure or fixed to the ground by means of threaded connection or the like.

[0082] When placing the battery cell, the battery cell is placed on the top of the support platform 6, and the support platform 6 separates the battery cell from the ground, avoiding that more dust and other sundries adhere to the surface of the battery cell.

[0083] Embodiment 8

[0084] In this embodiment, an enclosing member 7 is connected to the support platform 6, and the support platform 6 and the enclosing member 7 enclose to form a fixing groove 9 for fixing the battery cell.

[0085] When the support platform 6 and the enclosing member 7 enclose to form a fixing groove 9 for fixing the battery cell, the fixing groove 9 has an opening facing upward, and the battery cell enters the fixing groove 9 through this opening.

[0086] During the punching process and the like, the battery cell is fixed in the horizontal direction by the fixing groove 9, avoiding the situation that the punching accuracy is affected due to the movement of the battery cell.

[0087] Embodiment 9

[0088] In this embodiment, a control member 8 is further included, which is electrically connected to the punching assembly 2, the driving assembly 3, the glue injection assembly 4 and the curing assembly 5, and is used to control the operation of the punching assembly 2, the driving assembly 3, the glue injection assembly 4 and the curing assembly 5.

[0089] As mentioned above, processes such as punching can be directly controlled by an operator, or directly controlled by a control device such as a controller, or controlled by the cooperation of an operator and a control device such as a controller. In this embodiment, the control member 8 directly controls the operation of the punching assembly 2, the driving assembly 3, the glue injection assembly 4 and the curing assembly 5, and the operator can issue control instructions to the controller through the control panel.

[0090] Embodiment 10

[0091] In this embodiment, the curing assembly 5 includes at least one curing lamp 51, and the curing lamp 51 is installed on the support member 1 and is arranged close to the glue injection assembly 4.

[0092] It should be noted that the composition of the glue mentioned above can be adjusted according to the actual situation. For example, the glue can be replaced with UV-sensitive solder paste; the curing lamp 51 can also be adjusted according to the composition of the glue. For example, when the glue is replaced with UV-sensitive solder paste, the curing lamp 51 is set as a UV lamp, and the UV-sensitive solder paste can be quickly cured within a few seconds to more than ten seconds under the irradiation of the UV lamp, so as to achieve the purpose of quickly connecting the solder tape to the back of the battery cell.

[0093] The setting that the curing lamp 51 is close to the glue injection assembly 4 is illustrated here. For example, in some cases, the glue injection assembly 4 includes a single glue injection member, the curing lamp 51 is set as a single one, and both the single glue injection member and the curing lamp 51 are installed on the same side wall of the support member 1 and the curing lamp 51 is arranged on one side of the glue injection member.

[0094] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0095] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A pre-fixing device for welding strips of a main grid-free photovoltaic module, characterized in that: include: Support member (1); A punching assembly (2) is mounted on the support member (1) and is used to open a circular groove on the back of the battery cell; A driving assembly (3) is mounted on the support member (1) and can drive the support member (1) to move in a vertical direction; A glue injection component (4), mounted on the support member (1) and used for injecting glue into the circular groove; and a curing assembly (5), which is mounted on the support member (1) and is used to increase the curing speed of the glue.

2. The busbar-free photovoltaic module welding ribbon pre-fixing device according to claim 1, characterized in that: The punching assembly (2) comprises a plurality of punching members (21), each of the punching members (21) is mounted on the support member (1), and each of the punching members (21) is distributed in a square array.

3. The busbar-free photovoltaic module welding ribbon pre-fixing device according to claim 2, characterized in that: The punching member (21) is configured as a punching machine.

4. The busbar-free photovoltaic module welding ribbon pre-fixing device according to claim 1, characterized in that: The driving assembly (3) comprises two symmetrically distributed driving mechanisms (31). Along the length direction of the support member (1), the two driving mechanisms (31) are respectively arranged on both sides of the support member (1) and are both connected to the support member (1). The two driving mechanisms (31) can cooperate to drive the support member (1) to move in a vertical direction.

5. The busbar-free photovoltaic module welding ribbon pre-fixing device according to claim 4, characterized in that: The driving mechanism (31) comprises a driving member (311) and a driving portion (312) connected to the driving member (311); the driving member (311) can drive the driving portion (312) to move in a vertical direction; the driving portion (312) is connected to the supporting member (1); the supporting member (1) has an axis extending along its own length direction; and the driving portion (312) can drive the supporting member (1) to rotate around its own axis.

6. The busbar-free photovoltaic module welding ribbon pre-fixing device according to claim 5, characterized in that: Along the thickness direction of the support member (1), the punching assembly (2) and the glue injection assembly (4) are symmetrically arranged, and the driving part (312) can realize the position interchange of the punching assembly (2) and the glue injection assembly (4) by driving the support member (1) to rotate around its own axis.

7. The busbar-free photovoltaic module welding ribbon pre-fixing device according to claim 1, characterized in that: A support platform (6) is provided on one side of the support member (1), and the support platform (6) is used to separate the battery sheet from the ground.

8. The busbar-free photovoltaic module welding ribbon pre-fixing device according to claim 7, characterized in that: An enclosure (7) is connected to the support platform (6), and the support platform (6) and the enclosure (7) are combined to form a fixing groove (9) for fixing the battery sheet.

9. The busbar-free photovoltaic module welding ribbon pre-fixing device according to claim 1, characterized in that: It also includes a control component (8) electrically connected to the punching component (2), the driving component (3), the glue injection component (4) and the curing component (5), and used to control the operation of the punching component (2), the driving component (3), the glue injection component (4) and the curing component (5).

10. The busbar-free photovoltaic module welding ribbon pre-fixing device according to claim 1, characterized in that: The curing assembly (5) comprises at least one curing lamp (51), and the curing lamp (51) is mounted on the support member (1) and arranged close to the glue injection assembly (4).

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