Battery piece glue printing assembly

Abstract

The utility model relates to a battery piece glue printing assembly, comprising a metal wire mesh comprising a plate body and at least one rib body which is arranged on the plate body in a protruding manner and extends along a first direction, the plate body is provided with a through hole array which is arranged corresponding to a battery piece, the through hole array comprises a plurality of rows of through hole groups which are arranged at intervals, each row of through hole groups comprises a plurality of through hole parts which are uniformly arranged at intervals in the first direction, and the rib bodies are arranged between two adjacent rows of through hole groups; the scraper is provided with a groove body corresponding to the rib body, and the scraper can be attached to the plate body to move in the first direction, so that the glue solution is printed on the battery piece through the through hole array; under the condition that the scraper is attached to the plate body and moves in the first direction, the rib bodies are arranged in the corresponding groove bodies in a penetrating mode, and gaps are formed between the outer surfaces of the rib bodies and the inner surfaces of the groove bodies. According to the utility model, the deformation of the metal wire mesh in the printing process can be prevented, the product yield of battery pieces is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of solar cell manufacturing, in particular to a cell sheet glue printing assembly. Background Art

[0002] Compared to cells with busbars, cells without busbars are more cost-effective. However, without a busbar, adhesive dots are required to bond the cell and solder ribbon. These dots are printed onto the cell using a scraper and a silk screen. Due to the limited thickness of the silk screen, the scraper can easily deform the screen during printing, resulting in uneven adhesive dots, which in turn affects the adhesion between the solder ribbon and the adhesive dots. Utility Model Content

[0003] Based on this, the utility model provides a battery sheet glue printing assembly, including:

[0004] A metal wire mesh comprising a plate body and at least one rib protruding from the plate body and extending along a first direction, wherein the plate body is provided with an array of through holes corresponding to the battery cells, the array of through holes comprising a plurality of rows of through hole groups spaced apart, each row of the through hole groups comprising a plurality of through hole portions spaced evenly apart along the first direction, and the rib being provided between two adjacent rows of the through hole groups; and

[0005] a scraper having a groove corresponding to the ribs, the scraper being adapted to fit the plate and move along the first direction to allow the adhesive to pass through the through-hole array and be printed on the battery cell;

[0006] When the scraper is attached to the plate and moves along the first direction, the ribs are inserted into the corresponding grooves, and a gap is formed between the outer surface of the ribs and the inner surface of the grooves.

[0007] Furthermore, the plate body is provided with a plurality of through hole arrays spaced apart along the first direction, and the through hole arrays are arranged in a one-to-one correspondence with the battery cells.

[0008] Furthermore, the wire mesh includes a plurality of ribs evenly spaced along a second direction, the scraper is provided with a plurality of grooves, the number of the grooves is equal to the number of the ribs, and the grooves are arranged in a one-to-one correspondence with the ribs, wherein the second direction is perpendicular to the first direction.

[0009] Furthermore, the outer surface of the rib body includes two first side surfaces arranged opposite to each other and a first top surface connecting the two first side surfaces into one;

[0010] The inner surface of the groove body includes two oppositely arranged second side surfaces and a second top surface connecting the two second side surfaces into one, the second side surfaces of the groove body are arranged in a one-to-one correspondence with the first side surfaces of the rib body, and the second top surface of the groove body is arranged in a corresponding correspondence with the first top surface of the rib body;

[0011] When the scraper is attached to the plate and moves along the first direction, there is a gap between the first side surface of the rib body and the corresponding second side surface of the groove body, and / or there is a gap between the first top surface of the rib body and the corresponding second top surface of the groove body.

[0012] Furthermore, the first top surface of the rib body is shaped similarly to the second top surface of the groove body.

[0013] Furthermore, the first top surface of the rib body is an arc surface.

[0014] Furthermore, the connection between the second top surface and the second side surface of the trough body is a smoothly transitioned arc surface.

[0015] Furthermore, the second top surface of the trough body is an arc surface.

[0016] Furthermore, the ribs are formed on the first surface of the plate, and the grooves are opened on the second surface of the scraper;

[0017] Wherein, the first side surface of the rib body is connected to the first surface of the plate body via a first chamfered surface, and / or the second side surface of the groove body is connected to the second surface of the scraper via a second chamfered surface.

[0018] Furthermore, the metal wire mesh is a steel wire mesh.

[0019] Compared with the prior art, the beneficial features of the present invention are as follows: the battery cell glue printing assembly adopts a metal wire mesh, and the metal wire mesh includes a plate body and at least one rib body protruding from the plate body and extending along the first direction, the rib body is arranged between two adjacent columns of through-hole groups, which can effectively increase the strength of the metal wire mesh, prevent the metal wire mesh from deforming during the printing process, and improve the product yield of the battery cell; moreover, a groove body corresponding to the rib body is provided on the scraper; when the scraper is fitted on the plate body and moves along the first direction, the rib body passes through the corresponding groove body, and there is a gap between the outer surface of the rib body and the inner surface of the groove body; the groove body and the rib body are arranged correspondingly, and can give way to the rib body, and will not have friction contact with the rib body, which can not only further improve the product yield of the battery cell, but also extend the service life of the battery cell glue printing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a schematic diagram of the metal mesh structure in the battery cell glue printing assembly according to an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 A top view of

[0022] Figure 3 for Figure 1 Schematic diagram of the first structure of local A;

[0023] Figure 4 for Figure 1 Schematic diagram of the second structure of local A;

[0024] Figure 5 This is a schematic diagram of the scraper structure in the battery sheet glue printing assembly according to the embodiment of the utility model;

[0025] Figure 6 for Figure 5 Schematic diagram of the first structure of local B;

[0026] Figure 7 for Figure 5 Schematic diagram of the second structure of local B;

[0027] Figure 8 for Figure 5 The third structural diagram of the local B;

[0028] Figure 9 for Figure 5 Schematic diagram of the fourth structure of local B;

[0029] Wherein: 1-metal wire mesh (101-plate body (1011-through hole array (10111-through hole group (101111-through hole portion)), 1012-first surface), 102-rib body (1021-first side surface, 1022-first top surface), 103-first chamfered surface), 2-scraper (201-trough body (2011-second side surface, 2012-second top surface), 202-second surface, 203-second chamfered surface). DETAILED DESCRIPTION

[0030] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the disclosure of the present invention.

[0031] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0033] Please refer to Figure 1 、 Figure 2 and Figure 5 The battery cell printing glue assembly of the embodiment of the present invention includes a metal screen 1 and a scraper 2. The metal screen 1 includes a plate 101 and at least one rib 102. The rib 102 is protruding from the plate 101 and extends along the surface of the plate 101 in a first direction. The plate 101 is provided with a through-hole array 1011 corresponding to the battery cells. One through-hole array 1011 includes one column of through-hole groups 10111 or multiple columns of through-hole groups 10111. When a through-hole array 1011 includes multiple columns of through-hole groups 10111, all through-hole groups 10111 of the same through-hole array 1011 are sequentially spaced along a second direction perpendicular to the first direction. Each column of through-hole groups 10111 includes one or more through-hole portions 101111. When each column of through-hole groups 10111 includes a plurality of through-hole portions 101111, all through-hole portions 101111 in the same column of through-hole groups 10111 are evenly spaced along the first direction. The ribs 102 are arranged between two adjacent columns of through-hole groups 10111. A groove 201 is provided on the scraper 2, and the groove 201 is arranged corresponding to the ribs 102, and can be used to make way for the ribs 102. The scraper 2 can be fitted on the plate 101 and moved along the first direction, so that the glue passes through the through-hole array 1011 and is printed on the battery cell to form glue dots. When the scraper 2 is fitted on the plate 101 and moved along the first direction, the ribs 102 are passed through the corresponding grooves 201, and a gap is formed between the outer surface of the ribs 102 and the inner surface of the grooves 201.

[0034] The embodiment of the present invention adopts a metal screen 1, that is, the screen printing screen in this embodiment is made of metal, which can effectively enhance the strength of the screen printing screen, and the metal screen 1 includes a plate 101 and at least one rib 102 protruding from the plate 101 and extending along the first direction, the rib 102 is provided between two adjacent rows of through-hole groups 10111, which can effectively increase the strength of the metal screen 1, prevent the metal screen 1 from deforming during the printing process, effectively improve the uniformity of the thickness of the printed glue point, and improve the product yield of the battery cell, and the scraper 2 is provided with a rib The groove 201 corresponding to the body 102 is provided. When the scraper 2 is in contact with the plate 101 and moves along the first direction, the rib 102 is provided in the corresponding groove 201, and a gap is formed between the outer surface of the rib 102 and the inner surface of the groove 201. The groove 201 is provided only in correspondence with the rib 102, which not only makes way for the rib 102 and does not cause frictional contact with the rib 102, but also avoids glue leakage caused by the groove 201 corresponding to the through-hole portion 101111. This not only further improves the product yield of the battery cell, but also extends the service life of the battery cell glue printing assembly. Moreover, this embodiment only requires changing the structure of the metal screen 1 and the scraper 2 based on the existing battery cell glue printing equipment to solve the problem of uneven glue dot thickness caused by deformation of the metal screen 1 during glue printing. The structure is simple and basically does not increase the equipment cost.

[0035] In some preferred embodiments, please refer to Figure 2 The plate 101 is provided with a plurality of through-hole arrays 1011, all of which are spaced apart along a first direction, with each through-hole array 1011 corresponding to each cell. In this embodiment, the cell printing assembly can process multiple cells at a time, thereby improving production efficiency. Furthermore, the through-hole arrays 1011 are spaced apart along the first direction, meaning that the cells are sequentially arranged along the direction of relative movement (the first direction) between the scraper 2 and the metal screen 1. Compared to sequentially arranging the cells along the second direction, sequentially arranging the cells along the first direction can result in more uniform force on all cells, thereby improving the yield rate of the cell products.

[0036] As an example, please refer to Figure 2 Two through hole arrays 1011 are provided on the plate body 101 , and the two through hole arrays 1011 are spaced apart along the first direction.

[0037] In some preferred embodiments, please refer to Figure 2 The metal wire mesh 1 includes a plurality of ribs 102, and all the ribs 102 are evenly spaced along the second direction on the plate 101, which not only further improves the strength of the metal wire mesh 1, but also makes the strength of the metal wire mesh 1 more uniform, further avoiding deformation of the metal wire mesh 1 during contact with the scraper 2, and further improving the product yield of the battery cell.

[0038] As an example, please refer to Figure 2 The wire mesh 1 includes three ribs 102, evenly spaced along the second direction, with the center rib 102 located on the centerline of the through-hole array 1011. Accordingly, the scraper 2 has three grooves 201, each corresponding to one of the three ribs 102. This structure is simple, minimizing the impact on the strength of the scraper 2. It also prevents deformation of the wire mesh 1 during contact with the scraper 2, further improving the yield rate of the solar cell.

[0039] It should be noted that, in other embodiments, the metal wire mesh 1 may include other numbers of ribs 102 , which will not be described in detail here.

[0040] In some preferred embodiments, please refer to Figure 3 and Figure 4 The outer surface of the rib 102 includes two first side surfaces 1021 and a first top surface 1022. The two first side surfaces 1021 are arranged opposite each other, and the first top surface 1022 connects the two first side surfaces 1021 into an integral whole. Correspondingly, the inner surface of the trough 201 includes two second side surfaces 2011 and a second top surface 2012. The two second side surfaces 2011 are arranged opposite each other, and the second top surface 2012 connects the two second side surfaces 2011 into an integral whole. One of the second side surfaces 2011 of the trough 201 is arranged correspondingly to one of the first side surfaces 1021 of the rib 102, the other second side surface 2011 of the trough 201 is arranged correspondingly to the other first side surface 1021 of the rib 102, and the second top surface 2012 of the trough 201 is arranged correspondingly to the first top surface 1022 of the rib 102. Specifically, when the scraper 2 is attached to the plate 101 and moves along the first direction, the first side surface 1021 of the rib 102 is disposed opposite to the second side surface 2011 of the corresponding groove 201, and the first top surface 1022 of the rib 102 is disposed opposite to the second top surface 2012 of the corresponding groove 201. Furthermore, a gap exists between the first side surface 1021 of the rib 102 and the second side surface 2011 of the corresponding groove 201, and / or a gap exists between the first top surface 1022 of the rib 102 and the second top surface 2012 of the corresponding groove 201, thereby further preventing the rib 102 from scratching the surface of the groove 201.

[0041] In some examples, a gap exists between the first side surface 1021 of the rib 102 and the corresponding second side surface 2011 of the groove 201 .

[0042] In some examples, a gap exists between the first top surface 1022 of the rib 102 and the corresponding second top surface 2012 of the groove 201 .

[0043] As an optional embodiment, a gap is provided between the first side surface 1021 of the rib 102 and the corresponding second side surface 2011 of the groove 201, and a gap is provided between the first top surface 1022 of the rib 102 and the corresponding second top surface 2012 of the groove 201. In other words, the rib 102 does not contact the corresponding groove 201 at all, further preventing scratches between the rib 102 and the surface of the groove 201.

[0044] In some more preferred embodiments, the first top surface 1022 of the rib 102 is similar to the second top surface 2012 of the groove 201, that is, the shape of the first top surface 1022 of the rib 102 is the same as the shape of the second top surface 2012 of the groove 201. Figure 3 and Figure 4 When the arc surface is shown, the second top surface 2012 of the tank body 201 is Figures 7 to 9 The arc surface shown can avoid as much as possible the scratches between the rib 102 and the surface of the groove 201 caused by processing errors or extreme tolerances, further improving the product yield of the battery cell and extending the service life of the battery cell printing glue assembly.

[0045] In some more preferred embodiments, please refer to Figure 3 and Figure 4 The first top surface 1022 of the rib 102 is an arc surface, which not only prevents the rib 102 from accidentally scratching the scraper 2, but also makes it easier to clean the residual glue on the metal wire mesh 1, improves operational safety, and prevents the rib 102 from scratching the operator.

[0046] In some more preferred embodiments, please refer to Figures 6 to 9 The connection between the second top surface 2012 and the second side surface 2011 of the tank body 201 is a smoothly transitioned arc surface. During actual use, glue may enter the tank body 201. The smooth transition arc surface at the connection between the second top surface 2012 and the second side surface 2011 of the tank body 201 makes it easier and more thorough to clean residual glue from the tank body 201, preventing glue residue from interfering with the ribs 102 during subsequent use, resulting in ineffective glue printing. This embodiment extends the service life of the battery cell glue printing assembly and improves the product yield of the battery cells.

[0047] As an optional implementation, please refer to Figures 7 to 9 The second top surface 2012 of the groove body 201 can be an arc surface, which further reduces the difficulty of removing residual glue.

[0048] In some examples, the first top surface 1022 of the rib 102 is an arc surface. Figure 3 and Figure 4In addition, the second top surface 2012 of the tank body 201 is an arc surface, please refer to Figures 7 to 9 In this embodiment, the first top surface 1022 of the rib 102 and the second top surface 2012 of the tank body 201 are both arc-shaped surfaces. This not only facilitates cleaning of residual adhesive, improves the product yield of the battery cell and the safety of residual adhesive cleaning operations, and extends the service life of the battery cell adhesive printing assembly, but also, the first top surface 1022 of the rib 102 and the second top surface 2012 of the tank body 201 are contoured to minimize scratches between the rib 102 and the tank body 201 due to processing errors or extreme tolerances.

[0049] In some more preferred embodiments, when the scraper 2 is attached to the plate 101 and moves along the first direction, the second surface 202 of the scraper 2 is attached to the first surface 1012 of the plate 101 and moves along the first direction. Figure 3 and Figure 4 The ribs 102 are formed on the first surface 1012 of the plate 101. Figures 6 to 9 The groove 201 is formed on the second surface 202 of the scraper 2. The first side surface 1021 of the rib 102 is connected to the first surface 1012 of the plate 101 via the first chamfered surface 103, and / or the second side surface 2011 of the groove 201 is connected to the second surface 202 of the scraper 2 via the second chamfered surface 203. In other words, in this embodiment, the cell printing adhesive assembly includes at least one of the first chamfered surface 103 and the second chamfered surface 203.

[0050] For some examples, see Figure 4 The first side surface 1021 of the rib 102 is connected to the first surface 1012 of the plate 101 via the first chamfered surface 103, which can reduce stress concentration, further improve the strength of the metal mesh 1, and extend the service life of the metal mesh 1. Furthermore, the first side surface 1021 of the rib 102 is connected to the first surface 1012 of the plate 101 via the first chamfered surface 103, making it easier to clean residual glue at the connection between the first side surface 1021 of the rib 102 and the first surface 1012 of the plate 101. This allows for more thorough cleaning, preventing glue residue from remaining at the connection between the first side surface 1021 of the rib 102 and the first surface 1012 of the plate 101, potentially interfering with the scraper 2 during subsequent use and preventing effective glue printing. This embodiment extends the service life of the battery cell glue printing assembly and improves the product yield of the battery cells.

[0051] As an example, the first chamfered surface 103 may be an arc surface that smoothly connects the first side surface 1021 of the rib body 102 and the first surface 1012 of the plate body 101 , making it easier to remove residual glue.

[0052] For some examples, see Figure 8 and Figure 9 The second side surface 2011 of the groove body 201 is connected to the second surface 202 of the scraper 2 through the second chamfered surface 203, which not only makes it easier for the rib 102 to pass through the groove body 201, but also makes it easier to clean the residual glue in the groove body 201.

[0053] In some embodiments, see Figure 8 The second chamfered surface 203 can be a circular arc surface that smoothly connects the second side surface 2011 of the trough body 201 and the second surface 202 of the scraper 2, which can also improve the safety of use and avoid scratching the operator. In some embodiments, please refer to Figure 9 The second chamfered surface 203 can be a bevel to facilitate processing.

[0054] As an optional embodiment, the first side surface 1021 of the rib 102 is connected to the first surface 1012 of the plate body 101 through the first chamfered surface 103, and the second side surface 2011 of the groove body 201 is connected to the second surface 202 of the scraper 2 through the second chamfered surface 203, which further reduces the difficulty of cleaning residual glue, extends the service life of the battery cell glue printing assembly, and improves the product yield and operational safety of the battery cell.

[0055] For some examples, see Figure 3 and Figure 4 , the first side surface 1021 of the rib 102 is a plane perpendicular to the first surface 1012 of the plate 101. Figures 6 to 9 The second side surface 2011 of the trough body 201 is a plane perpendicular to the second surface 202 of the scraper 2. It is understandable that in other embodiments, the first side surface 1021 and the second side surface 2011 can also be surface structures of other shapes, which will not be described in detail here.

[0056] In some preferred embodiments, the metal wire mesh 1 is a steel wire mesh, which further improves the strength and service life of the metal wire mesh 1.

[0057] It should be noted that, in other embodiments, the metal wire mesh 1 may also be made of other materials, which will not be described in detail here.

[0058] In some preferred embodiments, the scraper 2 is made of stainless steel, which improves the strength and service life of the scraper 2.

[0059] It should be noted that, in other embodiments, the scraper 2 may also be made of other materials, which will not be described in detail here.

[0060] As an example, the cell printing glue assembly can be applied to the production of busbar-less cells.

[0061] In other embodiments, the cell glue printing assembly may also be applicable to the production of cells with main grids, or the cell glue printing assembly may also be applicable to the production of other types of batteries, which will not be described in detail here.

[0062] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, 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.

[0063] The above embodiments merely represent preferred implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A battery cell printing glue assembly, characterized in that: include: A metal wire mesh comprising a plate body and at least one rib protruding from the plate body and extending along a first direction, wherein the plate body is provided with an array of through holes corresponding to the battery cells, the array of through holes comprising a plurality of rows of through hole groups spaced apart, each row of the through hole groups comprising a plurality of through hole portions spaced evenly apart along the first direction, and the rib being provided between two adjacent rows of the through hole groups; and a scraper having a groove corresponding to the ribs, the scraper being adapted to fit the plate and move along the first direction to allow the adhesive to pass through the through-hole array and be printed on the battery cell; When the scraper is attached to the plate and moves along the first direction, the ribs are inserted into the corresponding grooves, and a gap is formed between the outer surface of the ribs and the inner surface of the grooves.

2. The battery sheet adhesive printing assembly according to claim 1, characterized in that: The plate body is provided with a plurality of through hole arrays spaced apart along the first direction, and the through hole arrays are arranged in a one-to-one correspondence with the battery cells.

3. The battery sheet adhesive printing assembly according to claim 1, characterized in that: The metal wire mesh includes a plurality of ribs evenly spaced along a second direction, the scraper is provided with a plurality of grooves, the number of the grooves is equal to the number of the ribs, and the grooves are arranged in a one-to-one correspondence with the ribs, wherein the second direction is perpendicular to the first direction.

4. The battery sheet adhesive printing assembly according to claim 1, characterized in that: The outer surface of the rib body includes two first side surfaces that are opposite to each other and a first top surface that connects the two first side surfaces into one. The inner surface of the groove body includes two oppositely arranged second side surfaces and a second top surface connecting the two second side surfaces into one, the second side surfaces of the groove body are arranged in a one-to-one correspondence with the first side surfaces of the rib body, and the second top surface of the groove body is arranged in a corresponding correspondence with the first top surface of the rib body; When the scraper is attached to the plate and moves along the first direction, there is a gap between the first side surface of the rib body and the corresponding second side surface of the groove body, and / or there is a gap between the first top surface of the rib body and the corresponding second top surface of the groove body.

5. The battery sheet adhesive printing assembly according to claim 4, characterized in that: The first top surface of the rib body is shaped like the second top surface of the groove body.

6. The battery sheet adhesive printing assembly according to claim 4, characterized in that: The first top surface of the rib body is an arc surface.

7. The battery sheet adhesive printing assembly according to claim 4, characterized in that: The connection between the second top surface and the second side surface of the trough body is a smoothly transitioned arc surface.

8. The battery sheet adhesive printing assembly according to claim 7, characterized in that: The second top surface of the trough body is an arc surface.

9. The battery sheet adhesive printing assembly according to claim 4, characterized in that: The ribs are formed on the first surface of the plate, and the grooves are opened on the second surface of the scraper; Wherein, the first side surface of the rib body is connected to the first surface of the plate body via a first chamfered surface, and / or the second side surface of the groove body is connected to the second surface of the scraper via a second chamfered surface.

10. The battery sheet adhesive printing assembly according to claim 1, characterized in that: The metal wire mesh is a steel wire mesh.

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