Package component
By using an annular packaging strip to seal the panel in the packaging components of the photovoltaic module, the sealing problem caused by water vapor and oxygen penetration during outdoor use is solved, and the effect of reducing packaging costs and improving mechanical properties is achieved.
Patent Information
- Application Number
- CN202420627455.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-03-28
AI Technical Summary
When photovoltaic modules are used outdoors for a long time, their sealing and reliability are easily affected by the permeation of water vapor and oxygen.
A packaging component is adopted, which includes a first panel, a second panel, a first adhesive film, a second adhesive film and a packaging strip, which are sealed and connected to the panel through an annular structure of the packaging strip to enhance the water barrier and mechanical properties of the photovoltaic module.
It effectively reduces packaging costs, enhances the mechanical properties and water-blocking properties of photovoltaic modules, and improves the sealing effect.
Smart Images
Figure CN222764208U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaics, in particular to a packaging component. Background Art
[0002] With the rapid iteration of the photovoltaic industry, solar cells have entered a period of rapid development. During the long-term outdoor working service of photovoltaic modules, water vapor and oxygen in the atmospheric environment can easily penetrate into the packaging matrix of the photovoltaic modules through the sealing frame of the photovoltaic modules, thereby having a serious impact on the long-term reliability of the photovoltaic modules. Utility Model Content
[0003] Based on this, it is necessary to provide a packaging component. The packaging component of the utility model can reduce packaging costs, enhance the mechanical properties of photovoltaic modules, and enhance the water-blocking performance of photovoltaic modules.
[0004] An embodiment of the present application provides a packaging component.
[0005] A packaging component comprises a first panel, a second panel, a first adhesive film, a second adhesive film and a packaging strip, wherein the first panel, the first adhesive film, the second adhesive film and the second panel are stacked in sequence from top to bottom, wherein the first adhesive film and the second adhesive film are used to package a battery body, there is a gap between the edge of the first adhesive film and the edge of the first panel, there is a gap between the edge of the second adhesive film and the edge of the second panel, the packaging strip is located between the first panel and the second panel and is arranged close to the edge of the first panel and the edge of the second panel, the packaging strip is annular in structure as a whole, and is sealed and connected to the first panel and the second panel.
[0006] In some embodiments, the distance between the edge of the first adhesive film and the edge of the first panel is 12 mm to 15 mm.
[0007] In some embodiments, the distance between the edge of the second adhesive film and the edge of the second panel is 12 mm to 15 mm.
[0008] In some embodiments, the packaging strip has a thickness of 0.1 mm to 0.6 mm.
[0009] In some embodiments, the gap tolerance between the packaging strip and the first panel is less than 0.1 mm.
[0010] In some embodiments, the gap tolerance between the packaging strip and the second panel is less than 0.1 mm.
[0011] In some embodiments, the packaging strip includes a plurality of long packaging sub-strips, and a plurality of the packaging sub-strips are connected end to end to form a ring structure.
[0012] In some of the embodiments, the end surfaces of the adjacent package sub-strips at the head and the tail are connected by an adhesive.
[0013] In some embodiments, the adhesive is UV glue.
[0014] In some embodiments, one surface of the packaging strip is in contact with the first panel and connected by laser welding, and the other surface of the packaging strip is in contact with the second panel and connected by laser welding;
[0015] Alternatively, the two surfaces of the packaging strip are respectively wedge-shaped, the outward end surface of the first panel and the outward end surface of the second panel are respectively wedge-shaped, one of the surfaces of the packaging strip is in contact with and matched with the outward end surface of the first panel and is connected by laser welding, and the other surface of the packaging strip is in contact with and matched with the outward end surface of the second panel and is connected by laser welding.
[0016] An embodiment of the present application also provides a photovoltaic module.
[0017] A photovoltaic assembly comprises a battery body and the above-mentioned packaging component, wherein the battery body is packaged between the first adhesive film and the second adhesive film of the packaging component.
[0018] The packaging component of the utility model can improve the sealing effect. Compared with the traditional technology, the above packaging component has the following beneficial effects:
[0019] (1) The auxiliary material used in this application is a packaging strip, and a glass adhesive strip can be selected for the packaging strip. The packaging strip is arranged at the edge of the component. There is no requirement for the light transmittance of the packaging strip material, and no high-quality raw material processing is required, which reduces the cost of auxiliary materials.
[0020] (3) When glass adhesive strips are selected as the encapsulation strips, the glass adhesive strips can directly seal the edges of the first panel and the second panel of the module into a unified whole under the welding effect of laser heat, which can strengthen the mechanical properties of the photovoltaic module and enhance the sealing performance of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.
[0022] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.
[0023] Figure 1 This is a schematic diagram of a packaging component according to an embodiment of the utility model;
[0024] Figure 2 A schematic diagram of the position of a packaging strip in a packaging component according to an embodiment of the utility model;
[0025] Figure 3 This is a schematic diagram of a packaging component according to another embodiment of the present utility model.
[0026] Description of Reference Numerals
[0027] 10. Photovoltaic module; 100. Packaging component; 101. First panel; 102. Second panel; 103. First adhesive film; 104. Second adhesive film; 105. Packaging strip; 200. Battery body. DETAILED DESCRIPTION
[0028] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0032] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0033] 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 technical field 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. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0034] In the present disclosure, the terms "light-receiving surface" and "backlight surface" are used only to distinguish the locations of two opposite surfaces of the battery substrate. In actual working conditions, the "light-receiving surface" is the surface of the battery substrate that mainly receives light, but the "backlight surface" does not necessarily not receive light. On the contrary, due to the existence of diffusely reflected light, the "backlight surface" can also receive light in actual working conditions.
[0035] The present application provides a packaging component 100 to solve the problems of the traditional technology of using butyl rubber as a high water and oxygen barrier sealing technology for glass interlayer: (1) high-quality butyl rubber has a high cost, and mass production is not conducive to reducing the cost and increasing the efficiency of photovoltaic modules, and reduces product competitiveness; (2) butyl rubber is different from EVA / POE and other materials, and its processing technology is different from the latter, and there is a risk of process incompatibility during the module lamination process; (3) butyl rubber is generally a black material, which hinders the overall aesthetics of the photovoltaic module. The packaging component 100 will be described below in conjunction with the accompanying drawings.
[0036] The packaging component 100 provided in the embodiment of the present application is exemplified by referring to Figure 1 As shown, Figure 1 The schematic diagram of the structure of the packaging component 100 provided in the embodiment of the present application is as follows. The packaging component 100 of the present application can be used for packaging a photovoltaic module 10.
[0037] In order to more clearly illustrate the structure of the packaging component 100, the packaging component 100 will be introduced below with reference to the accompanying drawings. Figure 1 As shown, Figure 1 A schematic diagram of the structure of a packaging component 100 provided in an embodiment of the present application. A packaging component 100 includes a first panel 101, a second panel 102, a first adhesive film 103, a second adhesive film 104, and a packaging strip 105. The first panel 101, the first adhesive film 103, the second adhesive film 104, and the second panel 102 are stacked in sequence from top to bottom. The first adhesive film 103 and the second adhesive film 104 are used to encapsulate the battery body 200. There is a gap between the edge of the first adhesive film 103 and the edge of the first panel 101. There is a gap between the edge of the second adhesive film 104 and the edge of the second panel 102. See Figure 2 As shown, the packaging strip 105 is located between the first panel 101 and the second panel 102 and is disposed close to the edge of the first panel 101 and the edge of the second panel 102. The packaging strip 105 is an annular structure as a whole. The packaging strip 105 is sealed and connected to the first panel 101 and the second panel 102.
[0038] The packaging component 100 described above can reduce packaging costs, enhance the mechanical properties of the photovoltaic module 10 , and enhance the water-blocking performance of the photovoltaic module 10 .
[0039] In some embodiments, the distance between the edge of the first adhesive film 103 and the edge of the first panel 101 is 12 mm to 15 mm. For example, in one specific example, the distance between the edge of the first adhesive film 103 and the edge of the first panel 101 is 12 mm. In another specific example, the distance between the edge of the first adhesive film 103 and the edge of the first panel 101 is 15 mm. It is not difficult to understand that in other specific examples, the distance between the edge of the first adhesive film 103 and the edge of the first panel 101 can also be 13 mm, 14 mm or other parameters.
[0040] In some embodiments, the distance between the edge of the second adhesive film 104 and the edge of the second panel 102 is 12 mm to 15 mm. For example, in one specific example, the distance between the edge of the second adhesive film 104 and the edge of the second panel 102 is 12 mm. In another specific example, the distance between the edge of the second adhesive film 104 and the edge of the second panel 102 is 15 mm. It is not difficult to understand that in other specific examples, the distance between the edge of the second adhesive film 104 and the edge of the second panel 102 can also be 13 mm, 14 mm or other parameters.
[0041] In some embodiments, the thickness of the packaging strip 105 is 0.1 mm to 0.6 mm. For example, in one specific example, the thickness of the packaging strip 105 is 0.1 mm. In another specific example, the thickness of the packaging strip 105 is 0.6 mm. It is not difficult to understand that in other specific examples, the thickness of the packaging strip 105 can also be 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm or other parameters.
[0042] In some embodiments, the gap tolerance between the packaging strip 105 and the first panel 101 is less than 0.1 mm.
[0043] In some embodiments, the gap tolerance between the packaging strip 105 and the second panel 102 is less than 0.1 mm.
[0044] In some embodiments, the packaging strip 105 includes a plurality of long packaging sub-strips, and the plurality of packaging sub-strips are connected end to end to form a ring structure.
[0045] In some embodiments, the end surfaces of the adjacent package sub-strips are connected by an adhesive, which may be UV glue or the like.
[0046] In some of these embodiments, see Figure 1 As shown, one surface of the packaging strip 105 is in contact with and matched with the first panel 101 and connected by laser welding, and the other surface of the packaging strip 105 is in contact with and matched with the second panel 102 and connected by laser welding.
[0047] In some of these embodiments, see Figure 3 As shown, Figure 3 This is a schematic diagram of a packaging component 100 according to another embodiment of the utility model. The two surfaces of the packaging strip 105 are respectively wedge-shaped, and the outward end surface of the first panel 101 and the outward end surface of the second panel 102 are respectively wedge-shaped complementary to the packaging strip 105. One of the surfaces of the packaging strip 105 is in contact with and fits with the outward end surface of the first panel 101 and is connected by laser welding, and the other surface of the packaging strip 105 is in contact with and fits with the outward end surface of the second panel 102 and is connected by laser welding.
[0048] In some embodiments, the first panel 101 and the second panel 102 may be glass plates, respectively. The packaging strip 105 may be a glass adhesive strip.
[0049] An embodiment of the present application further provides a photovoltaic assembly 10 .
[0050] A photovoltaic assembly 10 includes a battery body 200 and the above-mentioned packaging component 100 , wherein the battery body 200 is packaged between a first adhesive film 103 and a second adhesive film 104 of the packaging component 100 .
[0051] In some of the embodiments, the battery body 200 may be a battery cell, or a battery string formed by connecting a plurality of battery cells, or a plurality of battery strings.
[0052] When the packaging component 100 is used to package the battery body 200 , the sizes of the first adhesive film 103 and the second adhesive film 104 can be set according to the size of the battery body 200 .
[0053] When the packaging component 100 is used to package the battery body 200, the steps include:
[0054] S1. Determine the size of the first panel 101 and the size of the second panel 102 according to the size of the battery body 200, wherein the size of the first panel 101 is the same as the size of the second panel 102. Based on the size of the first panel 101 or the second panel 102, shorten the two long sides and the two short sides of the first adhesive film 103 by 12mm~15mm respectively, shorten the two long sides and the two short sides of the second adhesive film 104 by 12mm~15mm respectively, and the thickness of the packaging strip 105 is 0.3mm, and the width of the packaging strip 105 is 12mm~15mm. Place the second adhesive film 104 in the middle of the second panel 102, place the battery body 200 on the second adhesive film 104, and place the first adhesive film 103 in contact with the battery body 200.
[0055] S2 . Place a packaging strip 105 on the edge of the second panel 102 . The packaging strip 105 surrounds the battery body 200 .
[0056] S3. After completing the above steps, cover the light-receiving surface of the battery body 200 with the first adhesive film 103, and then cover the first panel 101 on the first adhesive film 103, check the gap tolerance between the first panel 101, the second panel surface and the contact surface of the packaging strip 105 to ensure that the gap tolerance is less than 0.1mm, use high-temperature tape to fix the light-receiving surface and the backlight surface of the component around, send the component to the laminator, and perform the component lamination process to prepare the photovoltaic component laminate.
[0057] S4. After lamination is completed, the edges of the laminate are cleaned of any residues to ensure that there is no debris blocking the upper and lower surfaces of the edges of the laminate. The contact positions of the first panel 101, the second panel 102 and the packaging strip 105 on the laminate are laser welded. The packaging strip 105 is melted by the heat of the laser. At the same time, a certain pressure is applied between the first panel 101 and the second panel 102 so that the melted packaging strip material is fully infiltrated into the first panel 101 and the second panel 102 under the action of the applied pressure. The first panel 101 on the light-receiving side of the laminate, the second panel 102 on the backlight side and the packaging strip 105 are welded into a whole, thereby preparing a photovoltaic module 10 with good sealing performance.
[0058] S5. Use a glass material refractive index tester to test the refractive index of the laser welding interface on all four edges of the photovoltaic module 10, and use the refractive index data to evaluate the welding effect of the edge of the photovoltaic module 10. If there is a large difference in the data, repeat S4 until the test result meets the standard.
[0059] In summary, the above packaging component 100 has the following beneficial effects compared with the conventional technology:
[0060] (1) The auxiliary material used in this application is the packaging strip 105. The packaging strip 105 can be a glass adhesive strip, and the packaging strip 105 is arranged at the edge of the component. There is no requirement for the light transmittance of the packaging strip 105 material, and there is no need for high-quality raw material processing, which reduces the cost of auxiliary materials.
[0061] (2) When glass adhesive strips are selected as the packaging strips 105, the glass adhesive strips can directly seal the edges of the first panel 101 and the second panel 102 of the module into a unified whole under the welding effect of laser heat, thereby strengthening the mechanical properties of the photovoltaic module and enhancing the sealing performance of the photovoltaic module.
[0062] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0063] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A packaging component (100), characterized in that: The invention comprises a first panel (101), a second panel (102), a first adhesive film (103), a second adhesive film (104) and a packaging strip (105), wherein the first panel (101), the first adhesive film (103), the second adhesive film (104) and the second panel (102) are stacked in sequence from top to bottom, wherein the first adhesive film (103) and the second adhesive film (104) are used to package a battery body (200), there is a gap between the edge of the first adhesive film (103) and the edge of the first panel (101), there is a gap between the edge of the second adhesive film (104) and the edge of the second panel (102), the packaging strip (105) is located between the first panel (101) and the second panel (102) and is arranged close to the edge of the first panel (101) and the edge of the second panel (102), the packaging strip (105) is in an annular structure as a whole, and the packaging strip (105) is sealed and connected to the first panel (101) and the second panel (102).
2. The packaging component (100) according to claim 1, characterized in that: The distance between the edge of the first adhesive film (103) and the edge of the first panel (101) is 12 mm to 15 mm.
3. The packaging component (100) according to claim 1, characterized in that: The distance between the edge of the second adhesive film (104) and the edge of the second panel (102) is 12 mm to 15 mm.
4. The packaging component (100) according to claim 1, characterized in that: The packaging strip (105) has a thickness of 0.1 mm to 0.6 mm.
5. The packaging component (100) according to claim 1, characterized in that: The clearance tolerance between the packaging strip (105) and the first panel (101) is less than 0.1 mm.
6. The packaging component (100) according to claim 1, characterized in that: The clearance tolerance between the packaging strip (105) and the second panel (102) is less than 0.1 mm.
7. The packaging component (100) according to any one of claims 1 to 6, characterized in that: The packaging strip (105) comprises a plurality of long packaging sub-strips, and the plurality of packaging sub-strips are connected end to end to form a ring structure.
8. The packaging component (100) according to claim 7, characterized in that: The end surfaces of the adjacent packaging sub-strips at the head and tail are connected by an adhesive.
9. The packaging component (100) according to claim 8, characterized in that: The adhesive is UV glue.
10. The packaging component (100) according to any one of claims 1 to 6, 8 to 9, characterized in that: One surface of the packaging strip (105) is in contact with and matched with the first panel (101) and connected by laser welding, and the other surface of the packaging strip (105) is in contact with and matched with the second panel (102) and connected by laser welding; Alternatively, the two surfaces of the packaging strip (105) are respectively wedge-shaped, the outward end surface of the first panel (101) and the outward end surface of the second panel (102) are respectively wedge-shaped, one of the surfaces of the packaging strip (105) is in contact with the outward end surface of the first panel (101) and is connected by laser welding, and the other surface of the packaging strip (105) is in contact with the outward end surface of the second panel (102) and is connected by laser welding.