Glue printing screen plate and photovoltaic module production device

Abstract

The utility model discloses a glue printing screen plate and a photovoltaic module production device, and relates to the field of photovoltaic technology. The glue printing screen plate comprises a screen plate base body and a cutting structure. Meshes are formed in the screen base body, the cutting structure is arranged in the meshes, the screen base body is used for being printed on a battery piece coated with glue so that the glue can penetrate through the meshes and form glue points, and the cutting structure is used for ripping the glue in the glue printing process so that air entrained in the glue can escape. Compared with the prior art, the glue printing screen provided by the utility model adopts the meshes formed in the screen substrate and the cutting structures arranged in the meshes, so that glue point bubbles can be prevented from being generated in the glue printing process, glue printing uniformity is ensured, the bonding stability is improved, and the performance and the attractiveness of a photovoltaic module are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic technology field, specifically, relate to a kind of printing glue screen plate and photovoltaic module production device. BACKGROUND

[0002] With the sustained development of photovoltaic industry, no main grid technology has become one of the mainstream technologies of current research and development, and its implementation scheme mainly includes SmartWire, welding point glue, Merlin etc., among which, welding point glue is mainly fixed by screen printing glue welding strip and battery piece, and then alloying welding strip and battery grid line at a certain temperature to realize ohmic contact. The current welding point glue process is prone to produce bubbles in glue point, which leads to uneven printing glue, unstable bonding, directly affects the performance of photovoltaic module, and reduces the aesthetic degree.

[0003] Therefore, it is particularly important to design and manufacture a printing glue screen plate and photovoltaic module production device capable of preventing the generation of glue point bubbles. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a printing glue screen plate, which can avoid the generation of glue point bubbles in the printing glue process, ensure uniform printing glue, improve bonding stability, and ensure the performance and aesthetic degree of photovoltaic module.

[0005] Another purpose of the utility model is to provide a photovoltaic module production device, which can avoid the generation of glue point bubbles in the printing glue process, ensure uniform printing glue, improve bonding stability, and ensure the performance and aesthetic degree of photovoltaic module.

[0006] The utility model is realized by adopting the following technical solutions.

[0007] A printing glue screen plate includes a screen plate base body and a cutting structure. The screen plate base body is provided with a mesh hole, and the cutting structure is arranged in the mesh hole. The screen plate base body is used for printing on a battery piece coated with glue, so that the glue passes through the mesh hole and forms a glue point. The cutting structure is used for cutting the glue during the printing glue process, so that the air entrained in it escapes.

[0008] Optionally, the cutting structure is a cutting sheet connected to the inner wall of the mesh hole. The cutting sheet divides the mesh hole into at least two glue passing gaps.

[0009] Optionally, the cutting sheet is in the shape of a straight line, which divides the mesh hole into two glue passing gaps. Alternatively, the cutting sheet is in the shape of Y, which divides the mesh hole into three glue passing gaps. Alternatively, the cutting sheet is in the shape of a cross, which divides the mesh hole into four glue passing gaps.

[0010] Optionally, the mesh is arranged in a rectangular shape; a ratio of the thickness of the cutting piece to the width of the mesh is in a range of 0.05-0.5, and / or a ratio of the height of the cutting piece to the depth of the mesh is in a range of 0.05-1.

[0011] Optionally, the length of the mesh is in a range of 0.6mm-2.5mm; and / or the width of the mesh is in a range of 0.25mm-0.65mm; and / or the depth of the mesh is in a range of 50μm-200μm.

[0012] Optionally, the cutting piece is oppositely provided with a first end and a second end in the height direction of the cutting piece, the first end is arranged on a side away from the battery piece relative to the second end; the thickness of the first end is equal to the thickness of the second end, or the thickness of the first end is greater than the thickness of the second end.

[0013] Optionally, the cutting structure is made of an alloy material or a polymer material.

[0014] Optionally, the number of the mesh and the number of the cutting structure are both plural, the plurality of meshes are arranged on the mesh base body in a rectangular array, and each cutting structure is arranged in a mesh.

[0015] Optionally, the cutting structure is integrally formed with the mesh base body; or the cutting structure is welded with the mesh base body.

[0016] A photovoltaic module production device comprises the glue printing mesh plate, the glue printing mesh plate comprises a mesh base body and a cutting structure, the mesh base body is provided with a mesh, the cutting structure is arranged in the mesh, the mesh base body is used for being printed on a battery piece coated with glue, so that the glue passes through the mesh and forms a glue point, and the cutting structure is used for cutting the glue during the glue printing process, so that air entrained in the glue escapes.

[0017] The glue printing mesh plate and the photovoltaic module production device have the following beneficial effects:

[0018] The glue printing mesh plate comprises a mesh base body and a cutting structure, the mesh base body is provided with a mesh, the cutting structure is arranged in the mesh, the mesh base body is used for being printed on a battery piece coated with glue, so that the glue passes through the mesh and forms a glue point, and the cutting structure is used for cutting the glue during the glue printing process, so that air entrained in the glue escapes. Compared with the prior art, the glue printing mesh plate provided by the utility model can avoid the generation of glue point bubbles during the glue printing process, ensure uniform glue printing, improve bonding stability, ensure the performance and aesthetic degree of the photovoltaic module.

[0019] The photovoltaic module production device comprises the glue printing mesh plate, can avoid the generation of glue point bubbles during the glue printing process, ensure uniform glue printing, improve bonding stability, and ensure the performance and aesthetic degree of the photovoltaic module. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained without creative labor on the basis of the embodiments in the present application.

[0021] Figure 1 The structure schematic diagram of the rubber printing screen plate provided by the first embodiment of the present application is shown in the figure.

[0022] Figure 2 The partial structure schematic diagram of the rubber printing screen plate provided by the first embodiment of the present application is shown in the figure.

[0023] Figure 3 The sectional view of the rubber printing screen plate provided by the first embodiment of the present application is shown in the figure.

[0024] Figure 4 The partial structure schematic diagram of the rubber printing screen plate provided by the second embodiment of the present application is shown in the figure.

[0025] Figure 5 The partial structure schematic diagram of the rubber printing screen plate provided by the third embodiment of the present application is shown in the figure.

[0026] Icon: 100-rubber printing screen plate; 110-screen plate base body; 111-screen hole; 112-rubber coating gap; 113-wide edge; 120-cutting structure; 121-cutting piece; 122-first end; 123-second end; 124-first cutting section; 125-second cutting section; 126-third cutting section; 127-fourth cutting section; 128-fifth cutting section. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0029] It should be noted that like reference numerals and letters refer to like items in the several views, and that no further definitions and explanations of such items are required in the subsequent drawings, once such items have been defined in one of the drawings.

[0030] In the description of the utility model, it needs to be explained that the directions or position relations indicated by the terms "inner", "outer", "upper", "lower", "horizontal" and the like are based on the directions or position relations shown in the drawings, or are the directions or position relations in which the utility model product is usually placed during use, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as indicating or implying that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and thus cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "setting", "connecting", "installing" and "connecting" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be connected inside two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0032] Some embodiments of the utility model will be described in detail below with reference to the drawings. The features in the following embodiments can be combined with each other without conflict.

[0033] First embodiment

[0034] Please refer to Figures 1 to 3 The utility model embodiment provides a photovoltaic module production device (not shown in the figure) for producing photovoltaic modules. It can avoid producing glue point bubbles during glue printing, ensure uniform glue printing, improve bonding stability, and ensure the performance and aesthetics of photovoltaic modules.

[0035] The photovoltaic module production device comprises a glue printing screen plate 100, which is used for printing glue on a cell coated with glue, so that the glue is shaped into a glue point, and the subsequent welding strip is bonded to the glue point, thereby fixing the relative position of the welding strip and the cell and preventing relative displacement. Specifically, in the glue printing process, the conveying line drives a plurality of cells coated with glue to pass through the glue printing station in turn; when a cell coated with glue reaches the glue printing station, the conveying line is controlled to be paused, and the glue printing screen plate 100 is controlled to be lowered until the glue printing screen plate 100 is printed on the cell, so that the glue on the cell passes through the glue printing screen plate 100 under the extrusion action and forms a glue point; then the glue printing screen plate 100 is controlled to be raised to reset, and the conveying line is controlled to be started again to drive the next cell coated with glue to reach the glue printing station; thus, the automatic and efficient glue printing of a plurality of cells is realized.

[0036] The glue printing screen plate 100 comprises a screen plate base body 110 and a cutting structure 120. The screen plate base body 110 is provided with a screen hole 111, and the cutting structure 120 is arranged in the screen hole 111. The screen plate base body 110 is used for being printed on the cell coated with glue, so that the glue passes through the screen hole 111 and forms a glue point. The cutting structure 120 is used for cutting the glue in the glue printing process, so that the air entrained in the glue escapes, preventing air bubbles from appearing in the formed glue point, thereby avoiding the generation of glue point air bubbles in the glue printing process, ensuring uniform glue printing, improving bonding stability, and ensuring the performance and appearance of the photovoltaic module.

[0037] It should be noted that the glue generally has a high surface tension before solidification. Therefore, in the glue printing process of the prior art, the remaining glue inside the screen hole 111 forms a clear "concave liquid surface". In this way, the air in the "concave liquid surface" area cannot escape in time and enter the inside of the glue, so that air bubbles appear in the formed glue point. Moreover, the larger the size of the glue point, the larger the generated air bubbles, and the more the number of air bubbles. In the present application, the cutting structure 120 is arranged in the screen hole 111. When the screen plate base body 110 is printed on the cell coated with glue, the glue passes through the screen hole 111 under the extrusion action. In this process, the cutting structure 120 arranged in the screen hole 111 cuts the glue, so that the air entrained in the glue escapes outward, preventing air from remaining and causing air bubbles to form in the glue point in the subsequent process. After that, the screen plate base body 110 is raised to reset, and the cut glue flows out of the screen hole 111 under the action of gravity and viscosity, and is folded to form a glue point, completing the glue printing work.

[0038] Further, the cutting structure 120 is a cutting sheet 121, the cutting sheet 121 is connected to the inner wall of the mesh hole 111, the cutting sheet 121 divides the mesh hole 111 into at least two glue passing gaps 112, the glue passing gaps 112 are used for the glue to pass through, the cutting sheet 121 can divide the glue in the mesh hole 111 into at least two parts during the glue printing process, each part of the glue enters one glue passing gap 112, and when the mesh plate base body 110 rises and resets, the at least two parts of the glue flow out of the mesh hole 111 and are combined on the battery sheet to form a glue point.

[0039] In the embodiment, the cutting sheet 121 is in a linear shape, the cutting sheet 121 divides the mesh hole 111 into two glue passing gaps 112, the cutting sheet 121 can divide the glue in the mesh hole 111 into two parts during the glue printing process, each part of the glue enters one glue passing gap 112, and when the mesh plate base body 110 rises and resets, the two parts of the glue flow out of the mesh hole 111 and are combined on the battery sheet to form a glue point.

[0040] In the embodiment, the mesh hole 111 is in a rectangular shape. However, it is not limited to this, in other embodiments, the mesh hole 111 can be in a circular shape or an elliptical shape, and the shape of the mesh hole 111 is not specifically limited.

[0041] In the embodiment, the length direction of the cutting sheet 121 is the same as the length direction of the mesh hole 111, the thickness direction of the cutting sheet 121 is the same as the width direction of the mesh hole 111, and the height direction of the cutting sheet 121 is the same as the depth direction of the mesh hole 111. However, it is not limited to this, in other embodiments, the length direction of the cutting sheet 121 can be the same as the width direction of the mesh hole 111, at this time, the thickness direction of the cutting sheet 121 is the same as the length direction of the mesh hole 111, and the setting position of the cutting sheet 121 is not specifically limited.

[0042] In order to facilitate understanding, the length of the mesh hole 111 is represented as a, the width of the mesh hole 111 is represented as b, the depth of the mesh hole 111 is represented as c, the length of the cutting sheet 121 is represented as d, the thickness of the cutting sheet 121 is represented as e, and the height of the cutting sheet 121 is represented as f.

[0043] Further, the length of the cutting sheet 121 is equal to the length of the mesh hole 111, and the cutting sheet 121 is located in the middle of the mesh hole 111 to divide the mesh hole 111 into two independent and equal-area glue passing gaps 112, so as to ensure that the volumes of the two parts of the glue entering the two glue passing gaps 112 are equal and cannot be mixed, improve the cutting effect, and ensure the air escape effect.

[0044] Preferably, the ratio of the thickness of the cutting piece 121 to the width of the mesh hole 111 ranges from 0.05 to 0.5. A reasonable ratio of the thickness of the cutting piece 121 to the width of the mesh hole 111 can ensure that the cutting piece 121 evenly cuts the entering glue into two parts, and the cutting effect and the exhaust effect are good. In the embodiment, the ratio of the thickness of the cutting piece 121 to the width of the mesh hole 111 is 0.2, but it is not limited thereto. In other embodiments, the ratio of the thickness of the cutting piece 121 to the width of the mesh hole 111 can be 0.05 or 0.5, and the ratio of the thickness of the cutting piece 121 to the width of the mesh hole 111 is not specifically limited.

[0045] Preferably, the ratio of the height of the cutting piece 121 to the depth of the mesh hole 111 ranges from 0.05 to 1. A reasonable ratio of the height of the cutting piece 121 to the depth of the mesh hole 111 can improve the stability of the cutting piece 121 in cutting the glue and ensure that the air entrained in the glue can escape outward. In the embodiment, the ratio of the height of the cutting piece 121 to the depth of the mesh hole 111 is 0.5, but it is not limited thereto. In other embodiments, the ratio of the height of the cutting piece 121 to the depth of the mesh hole 111 can be 0.05 or 1, and the ratio of the height of the cutting piece 121 to the depth of the mesh hole 111 is not specifically limited.

[0046] Preferably, the length of the mesh hole 111 ranges from 0.6 mm to 2.5 mm. In the embodiment, the length of the mesh hole 111 is 2 mm, but it is not limited thereto. In other embodiments, the length of the mesh hole 111 can be 0.6 mm or 2.5 mm, and the length of the mesh hole 111 is not specifically limited.

[0047] Preferably, the width of the mesh hole 111 ranges from 0.25 mm to 0.65 mm. In the embodiment, the width of the mesh hole 111 is 0.4 mm, but it is not limited thereto. In other embodiments, the width of the mesh hole 111 can be 0.25 mm or 0.65 mm, and the width of the mesh hole 111 is not specifically limited.

[0048] Preferably, the depth of the mesh hole 111 ranges from 50 μm to 200 μm. In the embodiment, the depth of the mesh hole 111 is 100 μm, but it is not limited thereto. In other embodiments, the depth of the mesh hole 111 can be 50 μm or 200 μm, and the depth of the mesh hole 111 is not specifically limited.

[0049] Further, reasonable dimensions (length, width, and depth) of the mesh hole 111 can ensure that a glue point of appropriate size is formed on the battery piece, thereby ensuring that the adhesion of the glue point is sufficient without wasting glue, improving the adhesion effect of the welding strip and the battery piece, and preventing relative displacement thereof.

[0050] It should be noted that the cutting piece 121 is oppositely provided with a first end portion 122 and a second end portion 123 in the height direction, the first end portion 122 is arranged on the side away from the battery piece of the second end portion 123, that is, the second end wall is arranged close to the battery piece, and the first end portion 122 is arranged away from the battery piece. In this embodiment, the thickness of the first end portion 122 is equal to the thickness of the second end portion 123, that is, the thickness of the entire cutting piece 121 is the same, so as to facilitate production and processing. However, it is not limited thereto, in other embodiments, the thickness of the first end portion 122 is greater than the thickness of the second end portion 123, at this time, the first end portion 122 corresponds to the "blade back", and the second end portion 123 corresponds to the "blade edge", in the glue printing process, the second end portion 123 first contacts the glue coated on the battery piece, so as to improve the cutting effect on the glue.

[0051] Preferably, the cutting structure 120 is made of an alloy material or a high polymer material, wherein the alloy material can be an aluminum alloy, an iron alloy or a copper alloy, etc., and the high polymer material can be polytetrafluoroethylene, polyvinylidene fluoride, polyimide or polyurethane, etc.

[0052] In this embodiment, the number of the mesh holes 111 and the cutting structures 120 is multiple, the multiple mesh holes 111 are arranged in a rectangular array on the mesh plate base body 110, each cutting structure 120 is arranged in a mesh hole 111, and the multiple mesh holes 111 jointly act to form multiple glue points on the battery piece at the same time in the glue printing process, so as to facilitate the bonding of the battery piece and the welding strip, and the multiple cutting structures 120 jointly act to prevent the generation of glue point bubbles in the glue printing process, and ensure the uniformity of glue printing.

[0053] Preferably, the cutting structure 120 is integrally formed with the mesh plate base body 110, so as to improve the connection strength, or the cutting structure 120 is welded with the mesh plate base body 110, so as to facilitate production and processing.

[0054] The glue printing mesh plate 100 provided by the embodiment of the utility model, the mesh plate base body 110 is provided with the mesh hole 111, and the cutting structure 120 is arranged in the mesh hole 111, the mesh plate base body 110 is used for being printed on the battery piece coated with glue, so that the glue passes through the mesh hole 111 and forms a glue point, and the cutting structure 120 is used for cutting the glue in the glue printing process, so that the air in it escapes. Compared with the prior art, the glue printing mesh plate 100 provided by the utility model can avoid the generation of glue point bubbles in the glue printing process, ensure the uniformity of glue printing, improve the bonding stability, and ensure the performance and the appearance of the photovoltaic module. The photovoltaic module production device has high production efficiency and good product quality.

[0055] Second embodiment

[0056] Please refer to Figure 4The embodiment of the utility model provides a kind of printing glue screen plate 100, compared with first embodiment, the difference of this embodiment is that the shape of cutting piece 121 is different.

[0057] In the embodiment, the cutting piece 121 is Y-shaped, and the cutting piece 121 divides the mesh hole 111 into three glue passing gaps 112. The cutting piece 121 can divide the glue into three parts during the printing process, and each part of the glue enters a glue passing gap 112. When the screen plate base body 110 rises and resets, the three parts of the glue flow out of the mesh hole 111 and form a glue point on the battery piece.

[0058] Specifically, the mesh hole 111 is oppositely provided with two wide edges 113. The cutting piece 121 includes a first cutting section 124, a second cutting section 125 and a third cutting section 126. The first cutting section 124, the second cutting section 125 and the third cutting section 126 jointly form a Y-shaped structure. The first cutting section 124 and the second cutting section 125 are respectively connected to two ends of one wide edge 113, and the third cutting section 126 is connected to the middle of the other wide edge 113 and is perpendicular to the wide edge 113.

[0059] The printing glue screen plate 100 provided by the embodiment of the utility model has the same beneficial effects as the first embodiment, and details are not repeated here.

[0060] Third embodiment

[0061] Please refer to Figure 5 The embodiment of the utility model provides a kind of printing glue screen plate 100, compared with first embodiment, the difference of this embodiment is that the shape of cutting piece 121 is different.

[0062] In the embodiment, the cutting piece 121 is Y-shaped, and the cutting piece 121 divides the mesh hole 111 into three glue passing gaps 112. The cutting piece 121 can divide the glue into three parts during the printing process, and each part of the glue enters a glue passing gap 112. When the screen plate base body 110 rises and resets, the three parts of the glue flow out of the mesh hole 111 and form a glue point on the battery piece.

[0063] Specifically, the cutting piece 121 includes a fourth cutting section 127 and a fifth cutting section 128. The fourth cutting section 127 and the fifth cutting section 128 are cross-shaped and perpendicular to each other. The length direction of the fourth cutting section 127 is the same as the length direction of the mesh hole 111, and the fourth cutting section 127 is located in the middle of the mesh hole 111. The length direction of the fifth cutting section 128 is the same as the width direction of the mesh hole 111, and the fifth cutting section 128 is located in the middle of the mesh hole 111.

[0064] The printing rubber mesh plate 100 has the same beneficial effects as the first embodiment, and thus the description is not repeated here.

[0065] The preferred embodiments of the utility model are merely used for limiting the utility model, and the utility model can be changed and varied for the person skilled in the art. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A printing screen plate characterized by comprising: The screen plate base is used for printing on the battery piece coated with glue, so that the glue passes through the screen hole and forms a glue point, and the cutting structure is used for cutting the glue in the glue printing process to make the air entrained therein escape.

2. The rubber printing screen plate according to claim 1, wherein The cutting piece is connected to the inner wall of the screen hole, and the cutting piece divides the screen hole into at least two glue passing gaps for the glue to pass through.

3. The rubber printing screen plate according to claim 2, wherein The cutting piece is in the shape of a straight line, and the cutting piece divides the screen hole into two glue passing gaps. Alternatively, the cutting piece is in the shape of a Y, and the cutting piece divides the screen hole into three glue passing gaps. Alternatively, the cutting piece is in the shape of a cross, and the cutting piece divides the screen hole into four glue passing gaps.

4. The rubber printing screen plate according to claim 2, wherein The screen hole is arranged in a rectangular shape. The ratio of the thickness of the cutting piece to the width of the screen hole is 0.05-0.5, and / or the ratio of the height of the cutting piece to the depth of the screen hole is 0.05-1.

5. The rubber printing screen plate according to claim 4, wherein The length of the screen hole is 0.6mm-2.5mm; And / or, the width of the screen hole is 0.25mm-0.65mm; And / or, the depth of the screen hole is 50μm-200μm.

6. The rubber printing screen plate according to claim 2, wherein The cutting piece is oppositely provided with a first end and a second end in the height direction thereof, and the first end is arranged on the side away from the battery piece. The thickness of the first end is equal to the thickness of the second end, or the thickness of the first end is greater than the thickness of the second end.

7. The rubber printing screen plate according to claim 1, wherein The cutting structure is made of an alloy material or a high polymer material.

8. The rubber printing screen plate according to claim 1, wherein The number of the screen holes and the cutting structures is multiple, the multiple screen holes are arranged on the screen plate base in a rectangular array, and each cutting structure is arranged in a screen hole.

9. The rubber printing screen plate according to claim 1, wherein The cutting structure is integrally formed with the screen plate base. Alternatively, the cutting structure is welded with the screen plate base.

10. An apparatus for producing a photovoltaic module, characterized by, The glue printing screen plate comprises the glue printing screen plate according to any one of claims 1-9.

Images