Glazed glass and photovoltaic module

Abstract

The present application provides glazed glass and a photovoltaic module. The glazed glass comprises: a first glass plate having a first surface and a second surface which are opposite to each other, wherein the first surface has a glazed region and a non-glazed region; and a coating layer located on the glazed region of the first surface. The coating layer comprises a central region and a transition region, the transition region is located on the portion of the coating layer close to the non-glazed region, the central region is located on the portion of the coating layer distant from the non-glazed region, and the stress on the surface of the coating layer in the transition region gradually decreases from the edge close to the non-glazed region to the edge close to the central region.

Description

Enameled glass and photovoltaic panels Technical Field

[0001] The present application mainly relates to the photovoltaic field, and in particular to a glazed glass and a photovoltaic module. Background Art

[0002] To improve the utilization rate of light in the gaps between double-glass modules, the industry usually sets a coating layer with high reflectivity on the back glass plate of the double-glass module. However, the thickness, composition and thermal expansion coefficient of the high-reflective film are different from those of the glass plate. This leads to a large difference in the surface stress of the glass plate in the glazed area and the non-glazed area during the tempering process. During use, technicians found that the glass at the junction of the glazed area and the non-glazed area is more likely to break. After research, technicians found that the stress on the surface of the glass plate in the glazed area is about 40MPa, while the stress in the non-glazed area can reach 100MPa. The rapid change in stress between the glazed area and the non-glazed area will cause the strength of this position to be relatively weak, which is prone to breakage when heated or impacted. The higher the degree of tempering, the greater the probability of breakage in this area.

[0003] Summary of the Invention

[0004] The technical problem to be solved by the present application is to provide a glazed glass and a photovoltaic module that ensure a high degree of tempering and prevent a sudden change in surface stress.

[0005] In order to solve the above technical problems, the present application provides a glazed glass, including: a first glass plate, the first glass plate having a first surface and a second surface relative to each other, the first surface having a glazed area and a non-glazed area; a coating layer, located on the glazed area on the first surface, the coating layer including a central area and a transition area, the transition area being located in the portion of the coating layer close to the non-glazed area, the central area being located in the portion of the coating layer away from the non-glazed area, and the stress on the surface of the coating layer located in the transition area gradually decreases from the edge close to the non-glazed area to the edge close to the central area.

[0006] In one embodiment of the present application, the thickness of the coating layer in the central area along the normal direction of the first glass plate is uniform; the thickness of the coating layer in the transition area along the normal direction tends to decrease from the central area to the non-glazed area.

[0007] In one embodiment of the present application, the coating layer has a plurality of hollow portions in the transition area, and the sizes of the plurality of hollow portions tend to increase from the central area to the non-glazed area.

[0008] In one embodiment of the present application, the multiple hollow portions include multiple rows of hollow portion sets parallel to the edge of the transition zone away from the central zone, the multiple hollow portions in each row of hollow portion sets have the same size, and the size of the multiple hollow portions in the multiple rows of hollow portion sets tends to increase in the direction from the central zone to the non-glazed zone.

[0009] In one embodiment of the present application, the coating layer has a plurality of hollow portions in the transition area, and the distribution density of the plurality of hollow portions tends to increase in a direction from the central area to the non-glazed area.

[0010] In one embodiment of the present application, the shape of the hollow portion includes one or more of a semicircle, a circle, a rectangle, a triangle, a tooth shape, and a strip shape.

[0011] In one embodiment of the present application, the glaze-plated area and the coating layer are in a grid shape, and the non-glaze-plated area is in a rectangular shape.

[0012] The present application also provides a photovoltaic module, comprising: glazed glass as in any of the previous embodiments; a second glass plate, the surface of the second glass plate being unglazed; and a cell, the cell being located between the glazed glass and the second glass plate, and the cell being in contact with the second surface of the glazed glass.

[0013] In one embodiment of the present application, the glazed glass is located on the backlight side of the cell.

[0014] In one embodiment of the present application, the edge of the battery cell is located within the central area.

[0015] Compared with the prior art, the coating layer on the surface of the glass plate in the glazed glass and photovoltaic module provided in the present application has a transition portion. By arranging a coating with a gradual thickness or arranging hollows with a gradual size and density in the transition portion, the stress on the surface of the glazed glass in this area gradually decreases from the edge near the non-glazed area to the edge near the center area without sudden changes, thereby increasing the strength and reducing the risk of breakage.

[0016] Summary of the Figures

[0017] The accompanying drawings are included to provide a further understanding of the present application. They are incorporated into and constitute a part of the present application. The accompanying drawings illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0018] In the attached figure:

[0019] FIG1 is a schematic diagram of a first surface of glazed glass according to an embodiment of the present application.

[0020] FIG2 is a partial schematic diagram of the first surface of the glazed glass according to an embodiment of the present application.

[0021] FIG3 is a partial schematic diagram of the first surface of the enameled glass according to another embodiment of the present application.

[0022] FIG4 is a schematic diagram of a photovoltaic module according to an embodiment of the present application.

[0023] Preferred embodiment of this application

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.

[0025] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0026] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0027] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0028] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is solely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. Furthermore, while the terms used in this application are selected from commonly known and commonly used terms, some terms mentioned in this specification may have been selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant sections of this description. Furthermore, this application should be understood not only by the actual terms used, but also by the meaning implied by each term.

[0030] FIG1 is a schematic diagram of the first surface of an enameled glass according to an embodiment of the present application, and FIG2 is a partial schematic diagram of the first surface of an enameled glass according to an embodiment of the present application. With reference to FIG1-2 , the present application provides an enameled glass 10, comprising a first glass plate 100 and a coating layer 200. The first glass plate 100 has a first surface and a second surface, and FIG1 shows the first surface of the enameled glass 10. Specifically, the first surface of the first glass plate 100 comprises an enameled region 110 and an un-enameled region 120. The coating layer 200 is located only on the enameled region 110. The coating layer 200 further comprises a central region 210 and a transition region 220. The central region 210 is located in the portion of the coating layer 200 away from the un-enameled region 120, and the transition region 220 is located in the portion of the coating layer 200 closer to the un-enameled region 120. The stress on the surface of the coating layer 200 in the transition region 220 gradually decreases from the edge closer to the un-enameled region 120 to the edge closer to the central region 210.

[0031] It will be appreciated that the present application aims to address the issue of abrupt stress changes between the glazed and unglazed areas. To this end, the coating layer 200 is divided into a central area 210 and a transition area 220. Stress within the transition area 220 varies smoothly rather than abruptly. In practical applications, the coating layer 200 can have a variety of shapes. Regardless of the configuration, the glazed glass 10 provided herein ensures that the central area 210 is not directly adjacent to the unglazed area 120, i.e., a transition area 220 is provided between the central area 210 and the unglazed area 120.

[0032] Figure 2 shows the local specific features within the P area shown in Figure 1. In the embodiment shown in Figures 1-2, the glazed area 110 and the coating layer 200 are grid-shaped, and the non-glazed area 120 is rectangular. In this case, the glazed area 110 is straight and has corners in some positions (as shown in Figure 2). At this time, the transition area 220 is located on both sides of the central area 210, so that the central area 210 does not directly contact the non-glazed area 120.

[0033] Taking the partial view of the enameled area 110 extending along the AA' direction shown in FIG2 as an example, the central area 210 extends along the AA' direction, and transition areas 220 are located on both the left and right sides of the central area 210. For ease of understanding, the left and right transition areas 220 are designated 220a and 220b, respectively. Specifically, the stress on the surface of the enameled glass 10 gradually decreases from the left edge to the right edge in transition area 220a, while the stress gradually decreases from the right edge to the left edge in transition area 220b.

[0034] As shown in Figures 1-2, a preferred embodiment of the present application is shown. In this embodiment, the coating layer 200 has multiple circular hollow portions 221 in the transition region 220. The sizes of the multiple hollow portions 221 are not all uniform, but rather increase in size from the central region 210 toward the non-glazed region 120. Similarly, taking the glazed region 110 extending along the AA' direction shown in Figure 2 as an example, the sizes of the multiple hollow portions 221 in the transition region 220a to the left of the central region 210 increase in size from the central region 210 toward the non-glazed region 120 (i.e., from right to left as shown in Figure 2). Similarly, the sizes of the multiple hollow portions 221 in the transition region 220b to the right of the central region 210 increase in size from the central region 210 toward the non-glazed region 120 (i.e., from left to right as shown in Figure 2).

[0035] Furthermore, in this embodiment, the multiple hollow portions 221 of the transition region 220a include three rows of hollow portion sets parallel to the edge S1 of the transition region 220 away from the central region 210, respectively designated as 230a, 240a, and 250a. Each of the hollow portion sets 230a, 240a, and 250a includes multiple hollow portions 221. For ease of understanding, the hollow portions in the hollow portion sets 230a, 240a, and 250a are hereinafter referred to as 231a, 241a, and 251a, respectively. Specifically, the multiple hollow portions 221 in each row of the hollow portion set are of the same size, i.e., the multiple hollow portions 231a in the hollow portion set 230a are of the same size, the multiple hollow portions 241a in the hollow portion set 240a are of the same size, and the multiple hollow portions 251a in the hollow portion set 250a are of the same size. Furthermore, the sizes of the plurality of hollow portions 221 in the three rows of hollow portion sets 230a, 240a, and 250a increase as they move from the central area 210 toward the unglazed area 120. That is, the size relationship of the hollow portions 231a, 241a, and 251a is: 231a > 241a > 251a. Since the hollow portions 231a, 241a, and 251a are each circular or semicircular in shape in this embodiment, the aforementioned size relationship can be understood as a pore size / diameter size.

[0036] Similarly, the multiple hollow portions 221 of the transition region 220b include three rows of hollow portion sets parallel to the edge S2 of the transition region 220 away from the central region 210, respectively designated as 230b, 240b, and 250b. The hollow portions in the hollow portion sets 230b, 240b, and 250b are designated as 231b, 241b, and 251b, respectively. The multiple hollow portions 231b in the hollow portion set 230b are of the same size, the multiple hollow portions 241b in the hollow portion set 240b are of the same size, and the multiple hollow portions 251b in the hollow portion set 250b are of the same size. The size relationship among the hollow portions 231b, 241b, and 251b is: 231b>241b>251b.

[0037] During the tempering process of the glass, the cooling speed of the hollow portion 221 is faster than that of the other positions, and the surface stress of the glazed glass 10 at the hollow portion 221 is greater than that of the other parts (the central area 210 and the non-hollow portion in the transition portion 220). The hollow portion 221 in the transition area 220 gradually becomes larger near the edge, thereby achieving the effect of gradually increasing the stress.

[0038] It is understood that in other embodiments of the present application, the number of rows of hollow portions may be greater or less (at least two rows), and the shape of the hollow portions 221 may be one or more of a semicircular, circular, rectangular, triangular, tooth-shaped, and strip-shaped, and the present application does not impose any specific limitations thereon. FIG3 is a partial schematic diagram of the first surface of the enameled glass according to another embodiment of the present application. In this embodiment, the hollow portions 221 are rectangular, and the size of the rectangle increases from the central area 210 toward the non-glazed area 120 (not shown).

[0039] Furthermore, in some other embodiments of the present application, the multiple hollow portions 221 in the transition zone 220 are of uniform size, and the distribution density of the multiple hollow portions 221 increases from the central zone 210 toward the unglazed zone 120. In other words, the closer to the central zone 210, the fewer the hollow portions 221, and the looser the arrangement; the closer to the unglazed zone 120, the more the hollow portions 221, and the denser the arrangement. This approach can also achieve the effect of gradually increasing stress from loosely arranged areas to densely arranged areas.

[0040] Furthermore, in some other embodiments of the present application, the transition region 220 of the coating layer 200 may not be provided with a hollow portion, but instead a gradual change in stress is achieved by gradually varying the thickness of the coating layer 200. It is understood that, assuming the coating material remains unchanged, the smaller the thickness of the coating layer 200, the closer the stress on the surface of the glazed glass 10 at that location is to the non-glazed region 120. Specifically, the thickness of the coating layer 200 in the center region 210 along the normal direction of the first glass plate 100 (as shown in the BB' direction in FIG. 2 ) is uniform, and the thickness of the coating layer 200 in the transition region 220 along the normal direction BB' decreases as it moves from the center region 210 toward the non-glazed region 120. In other words, the closer the location in the transition region 220 is to the non-glazed region 120, the smaller the thickness of the coating layer 200.

[0041] FIG4 is a schematic diagram of a photovoltaic module according to an embodiment of the present application. Referring to FIG4 , the present application also provides a photovoltaic module 20, comprising the glazed glass 10, a second cell 30, and a glass plate (not shown due to angle reasons) as in any of the previous embodiments. The second glass plate is an ordinary glass plate whose surface is not glazed. The cell 30 is located between the glazed glass 10 and the second glass plate, and is in contact with the second surface of the glazed glass 10, that is, the surface on which the coating layer 200 is not provided. The glazed glass 10 is located on the backlight side of the cell 30 and does not affect the reflection of the interstitial light. Furthermore, in this embodiment, the edge 40 of the cell 30 is located within the range of the central area 210 to prevent light transmission.

[0042] The basic concepts have been described above. It will be apparent to those skilled in the art that the above disclosures are merely illustrative and do not constitute limitations on this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to this application. Such modifications, improvements, and amendments are suggested in this application and remain within the spirit and scope of the exemplary embodiments of this application.

[0043] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0044] Similarly, it should be noted that, in order to simplify the presentation of this application and thus facilitate understanding of one or more embodiments of the invention, the foregoing descriptions of the embodiments of this application sometimes combine multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, an embodiment may have fewer features than all of the features of a single embodiment disclosed above.

[0045] In some embodiments, numbers are used to describe the quantity of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the description and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values ​​are as accurate as possible within the feasible range.

[0046] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions can be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present application, they will fall within the scope of the claims of the present application.

Claims

1. A glazed glass, characterized in that, Comprising: A first glass plate having opposite first and second surfaces, wherein the first surface has a glazed area and an unglazed area; A coating layer located on the glazed area of the first surface, the coating layer including a central area and a transition area, the transition area being the part of the coating layer close to the unglazed area, the central area being the part of the coating layer far from the unglazed area, and the stress on the surface of the coating layer in the transition area gradually decreasing from the edge close to the unglazed area towards the edge close to the central area.

2. The glazed glass according to claim 1, wherein: The thickness of the coating layer in the central area along the normal direction of the first glass plate is uniform; The thickness of the coating layer in the transition area along the normal direction shows a decreasing trend in the direction gradually approaching the unglazed area from the central area.

3. The glazed glass according to claim 1, wherein The coating layer in the transition area has a plurality of hollow portions, and the sizes of the plurality of hollow portions show an increasing trend in the direction gradually approaching the unglazed area from the central area.

4. The glazed glass according to claim 3, wherein The plurality of hollow portions include a plurality of rows of hollow portion sets parallel to the edge of the transition area far from the central area, and the plurality of hollow portions in each row of the hollow portion sets have the same size, and the sizes of the plurality of hollow portions in the plurality of rows of hollow portion sets show an increasing trend in the direction gradually approaching the unglazed area from the central area.

5. The glazed glass according to claim 1, wherein, The coating layer in the transition area has a plurality of hollow portions, and the distribution density of the plurality of hollow portions shows an increasing trend in the direction gradually approaching the unglazed area from the central area.

6. The glazed glass according to any one of claims 3 to 5, characterized in that, The shape of the hollow portion includes one or more of semi-circular, circular, rectangular, triangular, serrated and strip-shaped.

7. The glazed glass according to any one of claims 1 to 5, characterized in that, The glazed area and the coating layer are grid-shaped, and the unglazed area is rectangular.

8. A photovoltaic module, characterized in that, Comprising: The glazed glass according to any one of claims 1-7; A second glass plate whose surface is not glazed; And A battery cell located between the glazed glass and the second glass plate, and the battery cell is in contact with the second surface of the glazed glass.

9. The photovoltaic module according to claim 8, characterized in that, The glazed glass is located on the backlight side of the battery cell.

10. The photovoltaic module according to claim 9, wherein, The edge of the battery cell is within the range of the central area.

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