Photovoltaic module damp-heat aging verification sample structure
The laminated assembly with a water and oxygen barrier film enhances solar panel reliability testing by preventing glass breakage and improving accuracy, addressing framing and EL monitoring issues in small component tests.
Patent Information
- Application Number
- CN202421685126.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The glass of existing photovoltaic modules is easily shattered during reliability tests, lack of bus bar lead-out holes, and lack of borders lead to inaccurate test results.
The metal frame is simulated by water-retaining oxygen film and seals to construct a sample structure of moisture-heat aging of photovoltaic modules, including laminates, water-retaining oxygen film and seals, and is connected through an annular structure and supported by support frames to simulate the reliability test of the finished photovoltaic module products.
Effectively avoid glass fragmentation, improve testing accuracy, reduce material and time costs, and realize accurate simulation of reliability tests for photovoltaic modules.
Smart Images
Figure CN223109976U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaics, and particularly to a small sample structure for verifying the damp heat aging of a photovoltaic module. Background Art
[0002] In the field of photovoltaics, it is necessary to conduct test on the reliability of photovoltaic module products. The reliability test is an activity carried out to ensure that the photovoltaic module products maintain functional reliability during the specified service life under the expected use, transportation or storage environments. During the reliability test, mainly through various environmental test equipment to simulate the high temperature, low temperature, high humidity, low humidity and other conditions in the climate environment, accelerating the reaction of the photovoltaic module products in the use environment, to verify whether they meet the expected quality objectives in research and development, design and manufacturing, so as to evaluate the overall photovoltaic module products to determine the reliability life of the products. For photovoltaic modules in the R & D stage, using complete photovoltaic modules for reliability testing, especially for long-time testing projects such as DH1000 and DH2000, the time cost is too high. Therefore, generally small components are used for PCT48 to simulate the reliability of photovoltaic modules in a damp heat environment.
[0003] In the prior art, during the reliability test of small components of photovoltaic module products, the glass of small components is easily broken during the framing process, and there is no bus bar lead-out hole in the glass of conventional small components, and there are difficulties in EL monitoring before and after the test. In addition, after the silicone rubber is coated and cured around the small components, high-temperature cooking simulation is carried out immediately. The small components lack a frame and cannot effectively simulate a normal photovoltaic module, resulting in inaccurate reliability test results. Summary of the Utility Model
[0004] Based on this, it is necessary to provide a small sample structure for verifying the damp heat aging of a photovoltaic module. The small sample structure for verifying the damp heat aging of the photovoltaic module of the utility model can effectively simulate the reliability test of the finished photovoltaic module, and the sample preparation is simple and fast.
[0005] An embodiment of the present application provides a small sample structure for verifying the damp heat aging of a photovoltaic module.
[0006] A small sample structure for verifying the damp heat aging of a photovoltaic module includes a lamination, a moisture and oxygen barrier film, and a seal. The moisture and oxygen barrier films are respectively connected to the edge positions of the backlight surface and the light-receiving surface of the lamination. The moisture and oxygen barrier films on the two surfaces of the lamination protrude beyond the edge of the lamination. There is the seal between the protruding parts of the moisture and oxygen barrier films on the two surfaces of the lamination, and the seal is used to seal and connect the moisture and oxygen barrier films on the two surfaces of the lamination.
[0007] In some of these embodiments, the moisture and oxygen barrier film is a copper foil.
[0008] In some of these embodiments, the water and oxygen barrier films on each surface of the laminate are connected to form an annular structure.
[0009] In some of these embodiments, the width of the water and oxygen barrier film is 2 mm to 20 mm.
[0010] In some of these embodiments, the distance that the water and oxygen barrier film protrudes from the edge of the laminate is 1 mm to 10 mm.
[0011] In some of these embodiments, a seal is provided between the inner edge of the water and oxygen barrier film on the backlight side of the laminate and the backlight side of the laminate.
[0012] In some of these embodiments, the seal is silicone.
[0013] In some of these embodiments, the water and oxygen barrier film is connected to the side surface in the thickness direction of the laminate, and the protruding portions of the water and oxygen barrier films on the two surfaces of the laminate and the water and oxygen barrier film on the side surface in the thickness direction of the laminate are hermetically connected through the seal.
[0014] In some of these embodiments, the laminate includes a front panel, a front adhesive film, a battery cell, a back adhesive film, and a back panel that are sequentially laminated and connected.
[0015] In some of these embodiments, the small sample structure for verifying the damp heat aging of the photovoltaic module further includes a support frame, and the support frame includes a plurality of support grooves for supporting the encapsulated small sample structure.
[0016] The above-mentioned small sample structure for verifying the damp heat aging of the photovoltaic module is simple to manufacture, can effectively simulate the reliability test of the finished photovoltaic module, is simple and fast in sample preparation, and the test results are accurate. The small sample structure for verifying the damp heat aging of the photovoltaic module in this application uses a water and oxygen barrier film and a seal to simulate the metal frame, avoiding the glass in the small sample structure for verifying the damp heat aging of the photovoltaic module from cracking. When performing the damp heat aging verification, it can not only effectively improve the test accuracy but also reduce the test material cost and time cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.
[0018] In order to more fully understand the present application and its beneficial effects, the following will be described in conjunction with the drawings. Among them, the same reference numerals represent the same parts in the following description.
[0019] Figure 1 Front schematic view of the structure of the verification sample for damp heat aging of a photovoltaic module according to an embodiment of the present utility model;
[0020] Figure 2 Front schematic view of the structure of the verification sample for damp heat aging of a photovoltaic module according to an embodiment of the present utility model;
[0021] Figure 3 Side schematic view of the structure of the verification sample for damp heat aging of a photovoltaic module according to an embodiment of the present utility model;
[0022] Figure 4 Schematic view of the cooperation between the structure of the verification sample for damp heat aging of a photovoltaic module and a support frame according to an embodiment of the present utility model.
[0023] Description of the reference numerals
[0024] 10. Structure of the verification sample for damp heat aging of a photovoltaic module; 100. Laminated member; 200. Water and oxygen barrier film; 300. Sealing member; 400. Support frame. Detailed implementation manners
[0025] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific implementation manners of the present utility model will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present 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 departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.
[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0027] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0028] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be 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, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0029] In the description of the present utility model, the meaning of "several" is more than one, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, while understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0031] In the present disclosure, the "light-receiving surface" and the "backlight surface" are only used to distinguish the setting positions of the two opposite surfaces of the battery substrate in terms of name. 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 diffuse reflected light, etc., the "backlight surface" can also receive light irradiation in actual working conditions.
[0032] In the present application, when it comes to a numerical interval (i.e., a numerical range), unless otherwise specified, the distribution of the optional numerical values in the numerical interval is considered to be continuous, and includes the two numerical endpoints (i.e., the minimum and maximum values) of the numerical interval, and each numerical value between the two numerical endpoints. Unless otherwise specified, when the numerical interval only refers to an integer in the numerical interval, it includes the two endpoint integers of the numerical range, and each integer between the two endpoints, which is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe features or characteristics, these numerical ranges can be combined. In other words, unless otherwise specified, the numerical range disclosed in the present application should be understood to include any and all sub-ranges included therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, a percentage, a ratio, etc. "Numerical interval" allows for a broad range of quantitative intervals such as percentage intervals, ratio intervals, and ratio intervals.
[0033] The embodiment of the present application provides a photovoltaic module damp heat aging verification sample structure 10 to solve the problems in the prior art that during the reliability test of the small module, the glass of the small module is easy to break during the framing process, and the glass in the conventional small module has no bus bar lead-out hole, which makes it difficult to monitor the EL before and after the test; and the small module is coated with silicone around it and then cured, and then subjected to high-temperature cooking simulation, and the small module lacks a frame and cannot effectively simulate a normal photovoltaic module, resulting in inaccurate reliability test results. The photovoltaic module damp heat aging verification sample structure 10 will be described below in conjunction with the accompanying drawings.
[0034] The photovoltaic module damp heat aging verification sample structure 10 provided in the embodiment of the present application is exemplary, please refer to Figure 1 As shown, Figure 1 The schematic diagram of the structure of the photovoltaic module damp heat aging verification sample structure 10 provided in the embodiment of the present application. The photovoltaic module damp heat aging verification sample structure 10 of the present application can be used for photovoltaic module reliability testing.
[0035] In order to more clearly illustrate the structure of the photovoltaic module heat aging verification sample structure 10, the photovoltaic module heat aging verification sample structure 10 will be introduced in conjunction with the accompanying drawings. Figure 1 As shown, Figure 1 A schematic structural diagram of a photovoltaic module wet-heat aging verification sample structure 10 provided in an embodiment of the present application.
[0036] A verification sample structure 10 for damp heat aging of a photovoltaic module, comprising a laminate 100, a water and oxygen barrier film 200, and a seal 300. The water and oxygen barrier films 200 are respectively connected to the edge positions of the backlight surface and the light-receiving surface of the laminate 100. The water and oxygen barrier films 200 on both surfaces of the laminate 100 protrude beyond the edge of the laminate 100. There is a seal 300 between the protruding portions of the water and oxygen barrier films 200 on both surfaces of the laminate 100. The seal 300 is used to seal and connect the water and oxygen barrier films 200 on both surfaces of the laminate 100.
[0037] In some embodiments, the water and oxygen barrier film 200 is a copper foil. The greatest advantage of copper foil is that it has very good oxygen and moisture barrier properties, with a water permeability and oxygen permeability of 1. Copper foil is an excellent barrier material. In addition, copper foil has good heat resistance, good light reflectivity and gloss, and good shape at high and low temperatures, and is not easily deformed, making it suitable for the damp heat aging verification experiment of the photovoltaic module in this application.
[0038] In some embodiments, the water and oxygen barrier films 200 on each surface of the laminate 100 are connected to form an annular structure.
[0039] In some embodiments, the width of the water and oxygen barrier film 200 is 2 mm to 20 mm.
[0040] In some embodiments, the distance that the water and oxygen barrier film 200 protrudes beyond the edge of the laminate 100 is 1 mm to 10 mm.
[0041] In some embodiments, a seal 300 is provided between the inner edge of the water and oxygen barrier film 200 on the backlight surface of the laminate 100 and the backlight surface of the laminate 100.
[0042] In some embodiments, the seal 300 is silicone.
[0043] In some embodiments, the water and oxygen barrier film 200 is connected to the side surface in the thickness direction of the laminate 100. The protruding portions of the water and oxygen barrier films 200 on both surfaces of the laminate 100 and the water and oxygen barrier film 200 on the side surface in the thickness direction of the laminate 100 are hermetically connected by a seal 300.
[0044] In some embodiments, the laminate 100 includes a front panel, a front adhesive film, a solar cell, a back adhesive film, and a back panel that are sequentially laminated and connected.
[0045] In some embodiments, the verification sample structure 10 for damp heat aging of a photovoltaic module further includes a support frame 400. The support frame 400 includes a plurality of support grooves. The support grooves are used to support the encapsulated verification sample structure 10 for damp heat aging of a photovoltaic module.
[0046] When the above-mentioned small sample structure 10 for verifying the damp heat aging of photovoltaic modules can be used in reliability tests, various environmental test equipment is mainly used to simulate high temperature, low temperature, high humidity, low humidity, etc. in the climate environment, accelerating the reaction of the condition of the photovoltaic module product in the use environment, so as to verify whether it reaches the expected quality objectives in research and development, design and manufacturing, realizing the overall evaluation of the photovoltaic module product to determine the reliability life of the product.
[0047] When preparing the above-mentioned small sample structure 10 for verifying the damp heat aging of photovoltaic modules, first, a water and oxygen barrier film 200 is set at the four peripheral edges of one surface of the laminate 100, such as the backlight surface, and the edge of the water and oxygen barrier film 200 protrudes from the edge of the laminate 100. The water and oxygen barrier film 200 is in a ring structure. A part of the water and oxygen barrier film 200 is connected to the backlight surface of the laminate 100. See Figure 1 as shown. A seal 300 is set on the side surface in the thickness direction of the laminate 100. See Figure 2 as shown. Figure 2 is a front view of the small sample structure 10 for verifying the damp heat aging of photovoltaic modules according to an embodiment of the present invention. A water and oxygen barrier film 200 is set at the four peripheral edges of the light-receiving surface of the laminate 100, and the edge of the water and oxygen barrier film 200 protrudes from the edge of the laminate 100. The water and oxygen barrier film 200 is in a ring structure. A part of the water and oxygen barrier film 200 is connected to the light-receiving surface of the laminate 100. See Figure 3 as shown. Figure 3 is a side view of the small sample structure 10 for verifying the damp heat aging of photovoltaic modules according to an embodiment of the present invention. After encapsulation, it can better simulate a conventional module, achieving a better experimental effect. Then, the small sample structure 10 for verifying the damp heat aging of photovoltaic modules is vertically placed in the support frame 400 structure as shown in Figure 4 . Figure 4 is a schematic diagram of the cooperation between the small sample structure 10 for verifying the damp heat aging of photovoltaic modules and the support frame 400 according to an embodiment of the present invention. The support frame 400 prevents the influence of water vapor shielding on the accuracy of the PCT test. Then, the support frame 400 is placed in a PCT test chamber for testing. The air humidity in the PCT test chamber is 100%, and the environmental temperature is 120°C. The simulation test time is selected according to the experimental requirements.
[0048] In summary, the above-mentioned small sample structure 10 for verifying the damp heat aging of photovoltaic modules is simple to manufacture, can effectively simulate the reliability test of photovoltaic module products, is simple and fast in sample preparation, and the test results are accurate. The small sample structure 10 for verifying the damp heat aging of photovoltaic modules in this application can use the water and oxygen barrier film 200 and the seal 300 to simulate the metal frame, avoiding the glass of the small sample structure 10 for verifying the damp heat aging of photovoltaic modules from breaking. When performing the damp heat aging verification, it can not only effectively improve the test accuracy but also reduce the test material cost and time cost.
[0049] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.
[0050] The technical features of the above-described embodiments may be combined arbitrarily. For the sake of brevity of description, 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, it should be considered to be within the scope described in this specification.
[0051] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.
Claims
1. A small sample structure (10) for verifying the damp heat aging of a photovoltaic module, characterized in that, It includes a laminate (100), a moisture and oxygen barrier film (200), and a sealant (300). The moisture and oxygen barrier films (200) are respectively connected to the edge positions of the backlight surface and the light-receiving surface of the laminate (100). The moisture and oxygen barrier films (200) on both surfaces of the laminate (100) protrude beyond the edge of the laminate (100). There is the sealant (300) between the protruding parts of the moisture and oxygen barrier films (200) on both surfaces of the laminate (100). The sealant (300) is used to seal and connect the moisture and oxygen barrier films (200) on both surfaces of the laminate (100).
2. The structure (10) of the small sample for verifying damp heat aging of the photovoltaic module according to claim 1, characterized in that, The moisture and oxygen barrier film (200) is a copper foil.
3. The damp heat aging verification sample structure (10) of the photovoltaic module according to claim 1, characterized in that, The moisture and oxygen barrier films (200) on each surface of the laminate (100) are connected to form an annular structure.
4. The structure (10) of the small sample for verifying damp heat aging of a photovoltaic module according to claim 3, wherein, The width of the moisture and oxygen barrier film (200) is 2 mm to 20 mm.
5. The structure (10) of the small sample for verifying the damp heat aging of a photovoltaic module according to any one of claims 1 to 4, characterized in that, The distance that the moisture and oxygen barrier film (200) protrudes beyond the edge of the laminate (100) is 1 mm to 10 mm.
6. The structure (10) of the small sample for verifying damp heat aging of a photovoltaic module according to any one of claims 1 to 4, characterized in that, There is the sealant (300) between the inner edge of the moisture and oxygen barrier film (200) on the backlight surface of the laminate (100) and the backlight surface of the laminate (100).
7. The structure (10) of the small sample for verifying damp heat aging of a photovoltaic module according to any one of claims 1 to 4, characterized in that, The sealant (300) is silica gel.
8. The structure (10) of the photovoltaic module humidity-heat aging verification sample according to any one of claims 1 to 4, characterized in that, The moisture and oxygen barrier film (200) is connected to the side surface of the laminate (100) in the thickness direction. The protruding parts of the moisture and oxygen barrier films (200) on both surfaces of the laminate (100) and the moisture and oxygen barrier film (200) on the side surface of the laminate (100) in the thickness direction are sealed and connected through the sealant (300).
9. The structure (10) of the small sample for verifying damp heat aging of a photovoltaic module according to any one of claims 1 to 4, characterized in that, The laminate (100) includes a front panel, a front adhesive film, a battery cell, a back adhesive film, and a back panel that are sequentially laminated and connected.
10. The structure (10) of the small sample for verifying damp heat aging of a photovoltaic module according to any one of claims 1 to 4, characterized in that, The small sample structure (10) for verifying the damp heat aging of the photovoltaic module further includes a support frame (400). The support frame (400) includes a plurality of support grooves, and the support grooves are used to support the encapsulated small sample structure.