Solar cell UV attenuation test component
By applying light-absorbing coatings on the edge area of the encapsulated glass plate of the solar cell, the problem of uneven heat dissipation is solved, the temperature uniformity of each area is achieved, and the repeatability of the experiment and the accuracy of the evaluation are improved.
Patent Information
- Application Number
- CN202421442791.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-21
AI Technical Summary
In the UV attenuation experiment of solar cells, due to uneven heat dissipation in the edge areas of the encapsulated glass plate, the temperature of each area of the solar cell is uneven, which affects the repeatability of the experiment and the accuracy of the results.
By applying a plurality of light-absorbing coatings on the edge area of the encapsulated glass plate, the light absorbance is increased, the light energy is converted into heat, and heat dissipation is cancelled, thereby achieving uniform temperatures in each area.
The uniformity of temperature in each area of the solar cell is achieved, the repeatability of the experiment is improved, the noise of the experimental results is reduced, and the accuracy of the test evaluation is improved.
Smart Images
Figure CN222839650U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaics, in particular to a solar cell UV attenuation testing component. Background Art
[0002] The reliability of solar cells in the photovoltaic field is related to the quality of the products and has received more and more attention, especially the research on the anti-ultraviolet attenuation of solar cells. At present, most of the industry uses glass packaging to protect solar cells in preparation for UV attenuation experiments. The specific method is to place a piece of glass on the upper and lower surfaces of the solar cell and encapsulate the edges with copper foil. In the solar cell UV attenuation experiment, since the cell absorbs ultraviolet rays, part of the ultraviolet rays will be converted into heat, which will be transferred to the surrounding space through the packaging material. Due to the thermal conductivity of the glass, the temperature of the edge area of the solar cell is lower than that of the central area. Different temperatures at different positions will affect the attenuation rate of the solar cell. In addition, the uneven heat distribution at different positions of the solar cell will cause poor experimental repeatability and large noise in the experimental results, which is not conducive to the research and evaluation of the anti-UV attenuation experiment of solar cells. Utility Model Content
[0003] Based on this, it is necessary to provide a solar cell UV attenuation test component. The solar cell UV attenuation test component of the utility model can offset the heat dissipation of the edge area of the encapsulated glass plate in the solar cell anti-UV attenuation experiment, thereby ensuring the uniformity of the temperature of each area of the test sample, improving the experimental repeatability, reducing the noise of the experimental results, and improving the test evaluation results.
[0004] An embodiment of the present application provides a solar cell UV attenuation testing component.
[0005] A solar cell UV attenuation test component comprises a packaging glass plate and a plurality of light absorbing coatings, wherein the packaging glass plate comprises a first surface and a second surface which are distributed in relative positions, wherein the first surface is used for bonding a solar cell to be tested, wherein the plurality of light absorbing coatings are connected to the second surface, wherein the plurality of light absorbing coatings are close to edge positions of the second surface, and wherein the size of the light absorbing coating closest to the edge position of the second surface is larger than the size of the light absorbing coating closest to the center position of the second surface.
[0006] In some embodiments, the plurality of light-absorbing coating members form a plurality of coating groups, each coating group includes a plurality of light-absorbing coating members, and the plurality of light-absorbing coating members in each coating group are sequentially distributed along a direction from a center position to an edge position of the second surface.
[0007] In some of the embodiments, each edge region of the encapsulated glass plate is respectively provided with a plurality of coating groups, and there are intervals between adjacent coating groups.
[0008] In some of the embodiments, the spacings between adjacent coating groups in each edge region of the encapsulated glass plate are equal.
[0009] In some of the embodiments, the spacing distance between adjacent coating groups in each edge region of the encapsulated glass plate is 5 mm to 50 mm.
[0010] In some embodiments, the light absorbing coating is in one or more of a circular, elliptical and polygonal shape.
[0011] In some embodiments, the light absorbing coating is circular, and the diameter of the light absorbing coating is 1 mm to 20 mm.
[0012] In some embodiments, the light absorbing coating is black.
[0013] In some of the embodiments, the light absorbing coating has a high temperature resistance higher than 150°C.
[0014] In some embodiments, the light absorbing coating is an inorganic ceramic film or an organic polymer film.
[0015] The solar cell UV attenuation test component of the present application increases the light absorption in the edge area of the encapsulated glass plate and converts light into heat to offset the heat dissipation in the edge area of the encapsulated glass plate, thereby ensuring the uniformity of temperature in each area of the test sample. Specifically, the present application partially coats the edge area of the encapsulated glass plate with a light-absorbing coating, and increases the light absorption in the edge area of the encapsulated glass plate by converting light energy into heat. The size of the light-absorbing coating can be set according to demand, and the size of the light-absorbing coating and the arrangement rule of the light-absorbing coating can be adjusted, and the size of the heat generation and the heating area can be controlled to offset the heat dissipation in the edge area of the encapsulated glass plate to achieve thermal balance, thereby achieving uniform test temperature in each area of the test sample, facilitating the smooth implementation of the test experiment, improving the repeatability of the experiment, reducing the noise of the experimental results, and improving the test evaluation results. It can be seen that the solar cell UV attenuation test component of the present application has low implementation cost, fast testing, and high economic value. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] 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.
[0017] 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.
[0018] Figure 1 This is a schematic diagram of a solar cell UV attenuation test component according to an embodiment of the utility model.
[0019] Description of Reference Numerals
[0020] 10. Solar cell UV attenuation test component; 100. Encapsulation glass plate; 200. Light-absorbing coating; 20. Solar cell; 30. Encapsulation film. DETAILED DESCRIPTION
[0021] 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.
[0022] 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.
[0023] 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.
[0024] 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.
[0025] 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 for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0026] 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.
[0027] The embodiment of the present application provides a solar cell UV attenuation test component 10 to solve the problem that in the conventional technology, when performing the solar cell UV attenuation test, the temperature of the edge area of the solar cell 20 is lower than the temperature of the center area, which affects the attenuation rate of the solar cell 20, resulting in poor experimental repeatability, large noise in the experimental results, and is not conducive to the research and evaluation of the solar cell anti-UV attenuation experiment. The solar cell UV attenuation test component 10 will be described below in conjunction with the accompanying drawings.
[0028] The solar cell UV attenuation test component 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 solar cell UV attenuation test component 10 provided in the embodiment of the present application. The solar cell UV attenuation test component 10 of the present application can be used for the purpose of testing the anti-UV attenuation of solar cells.
[0029] In order to more clearly illustrate the structure of the solar cell UV attenuation test component 10 , the solar cell UV attenuation test component 10 will be introduced below with reference to the accompanying drawings.
[0030] For example, see Figure 1As shown, a solar cell UV attenuation test component 10 includes a packaging glass plate 100 and a light-absorbing coating 200. The packaging glass plate 100 includes a first surface and a second surface that are relatively distributed. It should be noted that the first surface and the second surface that are relatively distributed refer to the surfaces on both sides of the packaging glass plate 100. The first surface is used to fit the solar cell 20 to be tested. There are multiple light-absorbing coatings 200. Multiple light-absorbing coatings 200 are connected to the second surface. Multiple light-absorbing coatings 200 are close to the edge position of the second surface, and the size of the light-absorbing coating 200 closest to the edge position of the second surface is larger than the size of the light-absorbing coating 200 closest to the center position of the second surface. It should be noted that the size of the above-mentioned light-absorbing coating 200 can be parameters such as side length, length and width, or diameter. When the size of the light absorbing coating 200 closest to the edge of the second surface is larger than the size of the light absorbing coating 200 closest to the center of the second surface, the area of the light absorbing coating 200 closest to the edge of the second surface is larger than the area of the light absorbing coating 200 closest to the center of the second surface.
[0031] In some embodiments, a plurality of light absorbing coating members 200 form a plurality of coating groups. The number of light absorbing coating members 200 in each coating group is multiple. Figure 1 As shown, the plurality of light absorbing coating members 200 in each coating group are sequentially distributed along the direction from the center position to the edge position of the second surface.
[0032] In some embodiments, the light absorbing coating 200 is in one or more of a circular, elliptical and polygonal shape. Preferably, the light absorbing coating 200 is in a circular shape.
[0033] In some embodiments, the polygon may be a triangle, a trapezoid, a rectangle, a square, a pentagon, etc. The shape of the light absorbing coating 200 may be set according to actual needs.
[0034] In some of these examples, see Figure 1 As shown, the light absorbing coating 200 is circular. The diameter of the light absorbing coating 200 is 1 mm to 20 mm. Preferably, the diameter of the light absorbing coating 200 is 5 mm to 10 mm. For example, in one specific example, the diameter of the light absorbing coating 200 is 1 mm. In another specific example, the diameter of the light absorbing coating 200 is 20 mm. It is not difficult to understand that in other specific examples, the diameter of the light absorbing coating 200 can also be 2 mm, 5 mm, 8 mm, 10 mm, 12 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm or other parameters.
[0035] In some of these examples, see Figure 1As shown, each edge region of the encapsulated glass plate 100 is provided with multiple coating groups, and there is a gap between adjacent coating groups. The gap between adjacent coating groups can be set according to actual needs to meet the test requirements.
[0036] In some of these examples, see Figure 1 As shown, the spacings between adjacent coating groups in each edge region of the encapsulated glass plate 100 are equal.
[0037] In some of the embodiments, the spacing distance between adjacent coating groups of each edge area of the encapsulated glass plate 100 is 5mm~50mm. Preferably, the spacing distance between adjacent coating groups of each edge area of the encapsulated glass plate 100 is 5mm~30mm. More preferably, the spacing distance between adjacent coating groups of each edge area of the encapsulated glass plate 100 is 5mm~20mm. For example, in one specific example, the spacing distance between adjacent coating groups of each edge area of the encapsulated glass plate 100 is 5mm. In another specific example, the spacing distance between adjacent coating groups of each edge area of the encapsulated glass plate 100 is 50mm. It is not difficult to understand that in other specific examples, the spacing distance between adjacent coating groups of each edge area of the encapsulated glass plate 100 can also be 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm or other parameters.
[0038] In some embodiments, the encapsulated glass plate 100 is in a square shape, a rectangular shape, or other shapes.
[0039] For example, in some of these embodiments, see Figure 1 As shown, the encapsulated glass plate 100 is in a square shape. Six coating groups are respectively arranged at the four edge regions of the encapsulated glass plate 100, and the number of light absorbing coating members 200 in each coating group is three. In each edge region of the encapsulated glass plate 100, the intervals between adjacent coating groups are equal. In the edge regions of each encapsulated glass plate 100, the intervals between adjacent coating groups are also equal.
[0040] In some embodiments, the light absorbing coating 200 is black in color. The black light absorbing coating 200 can effectively absorb light.
[0041] In some embodiments, the light absorbing coating 200 has a high temperature resistance higher than 150° C. The high temperature resistance of the light absorbing coating 200 higher than 150° C. can increase the service life of the light absorbing coating 200 .
[0042] In some embodiments, the light absorbing coating 200 is an inorganic ceramic film or an organic polymer film. The light absorbing coating 200 is made of an inorganic ceramic material or an organic polymer material. The inorganic ceramic material and the organic polymer material can withstand high temperatures above 150°C to meet the test requirements.
[0043] In some embodiments, participating Figure 1 As shown, the solar cell UV attenuation test component 10 may further include a packaging adhesive film 30. The packaging adhesive film 30 is used to be disposed between two packaging glass plates 100 to encapsulate the solar cell 20.
[0044] In some embodiments, during the test, the encapsulation glass plates 100 of the two solar cell UV attenuation test components 10 are clamped on the two surfaces of the solar cell 20 to be tested, with the second surface of the encapsulation glass plates 100 facing outward, and then the edges of the two encapsulation glass plates 100 are encapsulated by an encapsulation material such as an encapsulation film 30. The encapsulation film 30 is an annular structure as a whole, see Figure 1 After packaging, the entire package is subjected to UV attenuation testing.
[0045] In summary, the solar cell UV attenuation test component 10 of the present application is coated with a light-absorbing coating 200 on the edge area of the encapsulated glass plate 100, and the heat dissipation of the edge area of the encapsulated glass plate 100 is offset by increasing the light absorption of the edge area of the encapsulated glass plate 100 and converting light energy into heat, thereby ensuring the uniformity of temperature at each position of the test sample. The size of the light-absorbing coating 200 can be set according to demand, and the size of the light-absorbing coating 200 and the arrangement rule of the light-absorbing coating 200 can be adjusted to control the amount of heat generated by the edge area of the encapsulated glass plate 100, offset the heat dissipation of the edge area of the encapsulated glass plate 100 to achieve thermal balance, and achieve uniform temperature at each position of the test sample such as a solar cell, improve experimental repeatability, reduce experimental result noise, and improve test evaluation results.
[0046] 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.
[0047] 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.
[0048] 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 solar cell UV attenuation test component (10), characterized in that: The invention comprises a packaging glass plate (100) and a plurality of light absorbing coatings (200), wherein the packaging glass plate (100) comprises a first surface and a second surface which are relatively distributed, wherein the first surface is used for bonding a solar cell (20) to be tested, wherein the plurality of light absorbing coatings (200) are connected to the second surface, wherein the plurality of light absorbing coatings (200) are close to an edge of the second surface, and the size of the light absorbing coating (200) closest to the edge of the second surface is larger than the size of the light absorbing coating (200) closest to the center of the second surface.
2. The solar cell UV attenuation test component (10) according to claim 1, characterized in that: The plurality of light absorbing coating members (200) form a plurality of coating groups, the number of the light absorbing coating members (200) in each coating group is multiple, and the plurality of light absorbing coating members (200) in each coating group are sequentially distributed along a direction from a central position to an edge position of the second surface.
3. The solar cell UV attenuation test component (10) according to claim 2, characterized in that: Multiple groups of coating groups are respectively arranged at the edge regions of the encapsulated glass plate (100), with intervals between adjacent coating groups.
4. The solar cell UV attenuation test component (10) according to claim 3, characterized in that: The spacing between adjacent coating groups in each edge region of the encapsulated glass plate (100) is equal.
5. The solar cell UV attenuation test component (10) according to claim 4, characterized in that: The spacing distance between adjacent coating groups in each edge region of the encapsulated glass plate (100) is 5 mm to 50 mm.
6. The solar cell UV attenuation test component (10) according to claim 1, characterized in that: The light absorbing coating (200) is in the shape of one or more of a circle, an ellipse and a polygon.
7. The solar cell UV attenuation test component (10) according to claim 6, characterized in that: The light absorbing coating member (200) is circular, and the diameter of the light absorbing coating member (200) is 1 mm to 20 mm.
8. The solar cell UV attenuation test component (10) according to any one of claims 1 to 7, characterized in that: The color of the light absorbing coating (200) is black.
9. The solar cell UV attenuation test component (10) according to any one of claims 1 to 7, characterized in that: The light absorbing coating (200) has a high temperature resistance performance higher than 150°C.
10. The solar cell UV attenuation test component (10) according to any one of claims 1 to 7, characterized in that: The light-absorbing coating (200) is an inorganic ceramic film or an organic polymer film.