CN117447092A

CN117447092A - Glazed glass and photovoltaic module

Info

Publication number: CN117447092A
Application number: CN202311798841.7A
Authority: CN
Inventors: 范喜燕; 张舒; 楚海元; 王杰; 王涛
Original assignee: Trina Solar Co Ltd
Current assignee: Trina Solar Co Ltd
Priority date: 2023-12-26
Filing date: 2023-12-26
Publication date: 2024-01-26
Anticipated expiration: 2043-12-26
Also published as: CN117447092B

Abstract

The invention provides a glazing glass and a photovoltaic module, wherein the glazing glass comprises: a first glass sheet having opposing first and second surfaces, the first surface having a glazed region and a non-glazed region; the coating layer is positioned on the glaze plating area on the first surface, the coating layer comprises a central area and a transition area, the transition area is positioned at a part of the coating layer close to the non-glaze plating area, the central area is positioned at a part of the coating layer far away from the non-glaze plating area, and the stress of the surface of the coating layer positioned at the transition area gradually decreases from the edge close to the non-glaze plating area to the edge close to the central area.

Description

Glazed glass and photovoltaic module

Technical Field

The invention mainly relates to the field of photovoltaics, in particular to glazed glass and a photovoltaic module.

Background

In order to improve the utilization ratio of gap light of the dual-glass assembly, a coating layer with higher reflectivity is usually arranged on a back glass plate of the dual-glass assembly in the industry, however, the thickness, the composition and the thermal expansion coefficient of a main material of a high-reflectivity film are different from those of the glass plate, so that the surface stress of the glass plate in the toughening process is greatly different in a glaze coating area and a non-glaze coating area, and in the use process, technicians find that glass at the junction of the glaze coating area and the non-glaze coating area is easy to break, and after the researches, the technicians find that: the stress of the surface of the glass plate in the glaze plating area is about 40MPa, the stress of the surface of the glass plate in the non-glaze plating area can reach 100MPa, the stress between the glaze plating area and the non-glaze plating area changes sharply, so that the strength of the position is relatively weak, the glass plate is easy to break when being heated or impacted, and the breaking probability of the area is larger as the toughening degree is higher.

Disclosure of Invention

The invention aims to solve the technical problem of providing glazed glass and a photovoltaic module which are high in toughening degree and free from abrupt change of surface stress.

In order to solve the technical problems, the invention provides a glazed glass, which comprises: a first glass sheet having opposing first and second surfaces, the first surface having a glazed region and a non-glazed region; the coating layer is positioned on the glaze plating area on the first surface, the coating layer comprises a central area and a transition area, the transition area is positioned at a part of the coating layer close to the non-glaze plating area, the central area is positioned at a part of the coating layer far away from the non-glaze plating area, and the stress of the surface of the coating layer positioned at the transition area gradually decreases from the edge close to the non-glaze plating area to the edge close to the central area.

In one embodiment of the invention, the thickness of the coating layer in the normal direction of the first glass plate in the central area is uniform; the thickness of the coating layer in the normal direction of the transition zone gradually leans towards the non-glaze coating zone from the central zone to be in a descending trend.

In an embodiment of the invention, the coating layer has a plurality of hollowed-out portions in the transition region, and the sizes of the hollowed-out portions gradually increase in a direction from the central region toward the non-glaze-plated region.

In an embodiment of the present invention, the plurality of hollowed-out portions include a plurality of rows of hollowed-out portion sets parallel to edges of the transition region away from the central region, wherein the plurality of hollowed-out portions in each row of hollowed-out portion sets have the same size, and the sizes of the plurality of hollowed-out portions in the plurality of rows of hollowed-out portion sets gradually increase in a direction from the central region toward the non-glazed region.

In an embodiment of the invention, the coating layer has a plurality of hollowed-out portions in the transition region, and the distribution density of the hollowed-out portions gradually increases in a direction from the central region toward the non-glaze-plated region.

In an embodiment of the present invention, the shape of the hollowed-out portion includes one or more of a semicircle, a circle, a rectangle, a triangle, a tooth shape and a bar shape.

In one embodiment of the present invention, the glaze plating area and the coating layer are in a grid shape, and the non-glaze plating area is rectangular.

The invention also provides a photovoltaic module, comprising: the glazing glass of any of the preceding embodiments; the surface of the second glass plate is not plated with glaze; and the battery piece is positioned between the glazed glass and the second glass plate, and is contacted with the second surface of the glazed glass.

In one embodiment of the invention, the glazing glass is positioned on the backlight side of the battery sheet.

In one embodiment of the invention, the edges of the battery cells are located within the confines of the central region.

Compared with the prior art, the coated glass and the coated layer on the surface of the glass plate in the photovoltaic module provided by the invention have the transition part, and the stress of the coated glass surface in the area is gradually reduced from the edge close to the non-coated glass area to the edge close to the central area by arranging the coated film with gradually changed thickness or the hollow with gradually changed size and density at the transition part, so that abrupt change can not occur, the strength is increased, and the damage risk is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the principles of the invention. In the accompanying drawings:

FIG. 1 is a schematic view of a first surface of a coated glass according to an embodiment of the present application.

FIG. 2 is a schematic view of a portion of a first surface of a coated glass according to an embodiment of the present application.

Fig. 3 is a schematic view of a portion of a first surface of a coated glass according to another embodiment of the present application.

Fig. 4 is a schematic view of a photovoltaic module according to an embodiment of the present application.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are used in the description of the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some examples or embodiments of the present application, and it is obvious to those skilled in the art that the present application may be applied to other similar situations according to the drawings without inventive effort. Unless otherwise apparent from the context of the language or otherwise specified, like reference numerals in the figures refer to like structures or operations.

As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not specific to the singular, but may include the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present application, it should be understood that, where azimuth terms such as "front, rear, upper, lower, left, right", "transverse, vertical, horizontal", and "top, bottom", etc., indicate azimuth or positional relationships generally based on those shown in the drawings, only for convenience of description and simplification of the description, these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are merely for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and thus should not be construed as limiting the scope of the present application. Furthermore, although terms used in the present application are selected from publicly known and commonly used terms, some terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present application be understood, not simply by the actual terms used but by the meaning of each term lying within.

Fig. 1 is a schematic view of a first surface of a coated glass according to an embodiment of the present application, and fig. 2 is a schematic view of a first surface of a coated glass according to an embodiment of the present application. Referring now to FIGS. 1-2 in combination, there is provided a coated glass 10 comprising a first glass sheet 100 and a coating 200, wherein the first glass sheet 100 has a first surface and a second surface, and FIG. 1 shows the first surface of the coated glass 10. Specifically, the first surface of the first glass plate 100 has the glaze-plating area 110 and the non-glaze-plating area 120, the coating layer 200 is only located on the glaze-plating area 110, and the coating layer 200 further includes a central area 210 and a transition area 220, the central area 210 is located at a portion of the coating layer 200 away from the non-glaze-plating area 120, the transition area 220 is located at a portion of the coating layer 200 close to the non-glaze-plating area 120, and the stress of the surface of the coating layer 220 located at the transition area 220 gradually decreases from the edge close to the non-glaze-plating area 120 to the edge close to the central area 210.

It will be appreciated that the present invention is directed to solving the problem of abrupt stress changes between the glazed and non-glazed regions and dividing the coating 200 into a central region 210 and a transition region 220 for this purpose, the stress being steadily changed rather than abruptly changed within the transition region 220. In practical applications, the coating layer 200 has various shapes, and in any case, the glazed glass 10 provided by the present invention ensures that the central region 210 is not directly adjacent to the non-glazed region 120, i.e. a transition region 220 is provided therebetween.

Fig. 2 shows a specific feature of the portion of the P region shown in fig. 1, in which the glaze-plating region 110 and the coating layer 200 are in a grid shape, and the non-glaze-plating region 120 is rectangular, in which case the glaze-plating region 110 is linear, and a portion of the position has a corner (as shown in fig. 2), and the transition regions 220 are located at two sides of the central region 210, so that the central region 210 does not directly contact the non-glaze-plating region 120.

Taking the part of the glazed region 110 extending along the AA 'direction as shown in fig. 2 as an example, the central region 210 extends along the AA' direction, and the transition regions 220 are respectively named as 220a and 220b on the left and right sides of the central region 210 for convenience of understanding. Specifically, the stress on the surface of the coated glass 10 gradually decreases from the left side edge to the right side edge in the transition zone 220a, and gradually decreases from the right side edge to the left side edge in the transition zone 220b.

As shown in fig. 1-2, in a preferred embodiment of the present invention, the coating layer 200 has a plurality of circular hollowed-out portions 221 in the transition region 220, and the sizes of the hollowed-out portions 221 are not uniform, but increase gradually from the central region 210 toward the non-glazed region 120. Also, taking the glazed region 110 extending along the AA' direction as shown in fig. 2 as an example, the size of the plurality of hollowed-out portions 221 in the transition region 220a at the left side of the central region 210 tends to increase from the central region 210 toward the non-glazed region 120 (i.e., right-to-left direction as shown in fig. 2). Similarly, the size of the plurality of hollowed-out portions 221 in the transition region 220b on the right side of the central region 210 tends to increase in a direction from the central region 210 toward the non-glazed region 120 (i.e., a direction from left to right as shown in fig. 2).

Further, the plurality of hollowed-out portions 221 of the transition region 220a in this embodiment includes three rows of hollowed-out portions parallel to the edge S1 of the transition region 220 away from the central region 210, which are designated as 230a, 240a and 250a, respectively. The hollowed-out portions 230a, 240a and 250a have a plurality of hollowed-out portions 221, and for convenience of understanding, the hollowed-out portions in the hollowed-out portions 230a, 240a and 250a are denoted by 231a, 241a and 251a, respectively. Specifically, the plurality of hollowed-out parts 221 in each row of hollowed-out part set have the same size, namely: the plurality of hollowed-out portions 231a in the hollowed-out portion set 230a are the same in size, the plurality of hollowed-out portions 241a in the hollowed-out portion set 240a are the same in size, and the plurality of hollowed-out portions 251a in the hollowed-out portion set 250a are the same in size. Further, the size of the plurality of hollowed-out portions 221 in the three-row hollowed-out portion sets 230a, 240a and 250a tends to increase gradually from the central region 210 toward the non-glazed region 120, that is, the size relationship among the hollowed-out portions 231a, 241a and 251a is: 231a >241a >251a. Since the hollowed-out portions 231a, 241a and 251a are each presented in a circular shape or a semicircular shape in the present embodiment, the above-described size relationship can be understood as a pore diameter/diameter size.

Likewise, the plurality of hollowed-out portions 221 of the transition region 220b includes three rows of hollowed-out portion sets, designated 230b, 240b and 250b, respectively, parallel to the edge S2 of the transition region 220 remote from the central region 210. The hollowed-out portions in hollowed-out portion sets 230b, 240b and 250b are denoted as 231b, 241b and 251b, respectively. The sizes of the plurality of hollowed-out parts 231b in the hollowed-out part set 230b are the same, the sizes of the plurality of hollowed-out parts 241b in the hollowed-out part set 240b are the same, the sizes of the plurality of hollowed-out parts 251b in the hollowed-out part set 250b are the same, and the size relations among the hollowed-out parts 231b, 241b and 251b are as follows: 231b >241b >251b.

In the tempering process of the glass, the cooling speed of the hollowed-out part 221 is faster than that of the rest positions, and the surface stress of the glazed glass 10 at the hollowed-out part 221 is larger than that of the rest parts (the non-hollowed-out parts in the central area 210 and the transition part 220), and the transition area 220 gradually gets larger near the hollowed-out part 221 at the edge position, so that the effect of gradually increasing the stress can be achieved.

It will be appreciated that in other embodiments of the present invention, the number of rows of the hollowed-out portion set may be greater or less (at least two rows), and the hollowed-out portion 221 may be one or more of semicircular, circular, rectangular, triangular, toothed and stripe, which is not particularly limited herein. Fig. 3 is a schematic view of a first surface of a glazed glass according to another embodiment of the present application, in which the hollowed-out portion 221 is rectangular, and the size of the rectangle is in a trend of increasing gradually toward the non-glazed region 120 (not shown) from the central region 210.

Further, in other embodiments of the present invention, the sizes of the plurality of hollowed-out portions 221 in the transition region 220 are uniform, and the distribution density of the plurality of hollowed-out portions 221 tends to increase gradually from the central region 210 toward the non-glazed region 120. That is, the closer to the central region 210, the fewer the number of the hollowed-out portions 221, the more loose the arrangement; the closer to the non-glazed region 120, the more the number of hollowed-out portions 221 are, the more closely arranged. The mode can also have the effect that the stress gradually increases from the loose arrangement position to the tight arrangement position.

Still further, in other embodiments of the present invention, the transition region 220 of the coating layer 200 may not have a hollowed-out portion, but the stress gradient is realized by gradually changing the thickness of the coating layer 200. It will be appreciated that the smaller the thickness of the coating 200, the closer the stress on the surface of the coated glass 10 is to the non-coated region 120 at that location, with the coating material unchanged. Specifically, the thickness of the coating layer 200 in the direction of the normal line of the first glass plate 100 (in the direction of BB 'shown in fig. 2) is uniform in the central region 210, and the thickness of the coating layer 200 in the direction of the normal line BB' in the transition region 220 tends to decrease in the direction from the central region 210 toward the non-glazing region 120, that is, the closer to the non-glazing region 120 in the transition region 220, the smaller the thickness of the coating layer 200.

Fig. 4 is a schematic view of a photovoltaic module according to an embodiment of the present application. Referring to fig. 4, the present invention also provides a photovoltaic module 20 comprising a glazing 10, a second cell 30, and a glass sheet (for angular reasons not shown) as in any of the previous embodiments. The second glass plate is a common glass plate with the surface not coated with glaze, the battery piece 30 is positioned between the glazed glass 10 and the second glass plate and is contacted with the first surface of the glazed glass 10, namely the surface provided with the coating layer 200, and the glazed glass 10 is positioned on the backlight surface of the battery piece 30, so that the reflection of gap light is not affected. Further, the edges 40 of the battery cells 30 are located within the central region 210 in this embodiment, preventing light transmission.

While the basic concepts have been described above, it will be apparent to those skilled in the art that the above disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements, and adaptations of the present application may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within this application, and are therefore within the spirit and scope of the exemplary embodiments of this application.

Meanwhile, the present application uses specific words to describe embodiments of the present application. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the present application. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the present application may be combined as suitable.

Likewise, it should be noted that in order to simplify the presentation disclosed herein and thereby aid in understanding one or more inventive embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof. This method of disclosure, however, is not intended to imply that more features than are presented in the claims are required for the subject application. Indeed, less than all of the features of a single embodiment disclosed above.

In some embodiments, numbers describing the components, number of attributes are used, it being understood that such numbers being used in the description of embodiments are modified in some examples by the modifier "about," approximately, "or" substantially. Unless otherwise indicated, "about," "approximately," or "substantially" indicate that the number allows for a 20% variation. Accordingly, in some embodiments, numerical parameters set forth in the specification and claims are approximations that may vary depending upon the desired properties sought to be obtained by the individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and employ a method for preserving the general number of digits. Although the numerical ranges and parameters set forth herein are approximations that may be employed in some embodiments to confirm the breadth of the range, in particular embodiments, the setting of such numerical values is as precise as possible.

While the present application has been described with reference to the present specific embodiments, those of ordinary skill in the art will recognize that the above embodiments are for illustrative purposes only, and that various equivalent changes or substitutions can be made without departing from the spirit of the present application, and therefore, all changes and modifications to the embodiments described above are intended to be within the scope of the claims of the present application.

Claims

1. A glazed glass, comprising:

a first glass sheet having opposing first and second surfaces, the first surface having a glazed region and a non-glazed region;

the coating layer is positioned on the glaze plating area on the first surface, the coating layer comprises a central area and a transition area, the transition area is positioned at the part, close to the non-glaze plating area, of the coating layer, the central area is positioned at the part, far away from the non-glaze plating area, of the coating layer, and the stress of the surface, positioned at the transition area, of the coating layer gradually decreases from the edge, close to the non-glaze plating area, to the edge, close to the central area.

2. The glazed glass of 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 gradually leans towards the non-glaze coating area from the central area in a descending trend.

3. The glazed glass according to claim 1, wherein the coating layer has a plurality of hollowed-out portions in the transition region, the size of the plurality of hollowed-out portions being in a tendency to increase in a direction from the central region toward the non-glazed region.

4. A glazing glass according to claim 3, wherein the plurality of hollowed-out portions comprise a plurality of rows of hollowed-out portions set parallel to an edge of the transition region away from the central region, the plurality of hollowed-out portions in each row of hollowed-out portions set having the same size, the plurality of hollowed-out portions in the plurality of rows of hollowed-out portions set having a size that increases in a direction from the central region gradually toward the non-glazing region.

5. The glazed glass according to claim 1, wherein the coating layer has a plurality of hollowed-out portions in the transition region, the distribution density of the plurality of hollowed-out portions being in a tendency to increase in a direction from the central region gradually toward the non-glazed region.

6. The glazed glass according to any one of claims 3-5, wherein the hollowed-out portion has a shape including one or more of a semicircle, a circle, a rectangle, a triangle, a tooth shape and a bar shape.

7. The glazed glass according to any one of claims 1 to 5, wherein the glazed region and the coating layer are in a grid shape and the non-glazed region is rectangular.

8. A photovoltaic module, comprising:

a glazing glass as claimed in any one of claims 1 to 7;

a second glass plate, the surface of which is not glazed; and

and the battery piece is positioned between the glazed glass and the second glass plate, and is contacted with the second surface of the glazed glass.

9. The photovoltaic module of claim 8, wherein the glazing glass is positioned on a backlight side of the cell.

10. The photovoltaic module of claim 9, wherein edges of the cells are located within the central region.