CN220456433U - Double-glass photovoltaic module and power generation equipment - Google Patents

Abstract

The utility model discloses a double-glass photovoltaic module and power generation equipment. The double-glass photovoltaic module comprises a first glass plate, a second glass plate, a solar cell, an encapsulation adhesive film, a bus bar and an encapsulation component, wherein the first glass plate and the encapsulation adhesive film are sequentially laminated on a light receiving surface of the solar cell, the second glass plate is arranged on a backlight surface of the solar cell, the bus bar is arranged at a part of positions between the second glass plate and the backlight surface of the solar cell, and the encapsulation component is used for encapsulating the first glass plate and the second glass plate. The dual-glass photovoltaic module reliability test project is stable in performance, can meet the current reliability test requirement, reduces materials used by the module, reduces the cost of the module, and realizes cost reduction and efficiency improvement.

Description

Double-glass photovoltaic module and power generation equipment

Technical Field

The utility model relates to the technical field of photovoltaics, in particular to a double-glass photovoltaic module and power generation equipment.

Background

In the photovoltaic field, the dual glass assembly structure generally comprises an aluminum frame, a junction box, front plate tempered glass, back plate tempered glass, battery pieces and packaging adhesive films, wherein the front plate tempered glass, the back plate tempered glass and the battery pieces are adhered to form a structure similar to a sandwich through the packaging adhesive films such as EVA adhesive films, POE adhesive films, co-extrusion POE adhesive films and the like. During production of the double-glass assembly, the welding scheme of the battery piece is that a bus bar such as a tin-coated copper belt is welded with a battery back electrode by adding tin paste, then a packaging adhesive film is laid, and a front plate tempered glass and a rear plate tempered glass are covered for lamination adhesion. In the traditional technology, the welding scheme of the battery piece adopts a tin-coated copper belt and silver paste printed back electrode battery, so that the cost is high, and the cost reduction and the efficiency improvement are not facilitated.

Disclosure of Invention

Based on this, it is necessary to provide a dual-glass photovoltaic module. The double-glass photovoltaic module can effectively collect current, can greatly reduce production cost and realize cost reduction and efficiency improvement.

An embodiment of the application provides a dual-glass photovoltaic module.

The utility model provides a dual glass photovoltaic module, includes first glass board, second glass board, solar cell, encapsulation glued membrane, busbar and encapsulation part, first glass board encapsulation glued membrane stack gradually in solar cell's light receiving surface, the second glass board set up in solar cell's the back light surface, the second glass board with part position between solar cell's the back light surface is provided with the busbar, the busbar with solar cell electric connection, encapsulation part is used for the encapsulation first glass board with the second glass board.

In some embodiments, the dual-glass photovoltaic assembly further comprises a connector through which the bus bar is connected to the backlight face of the solar cell.

In some of these embodiments, the connector is a silicone layer.

In some embodiments, the backlight surface of the solar cell has a plurality of hollowed-out areas, and the connecting piece is disposed in the corresponding hollowed-out area.

In some of these embodiments, a portion between the second glass plate and the backlight of the solar cell that is located outside the bus bar is in a vacuum state.

In some of these embodiments, the dual-pane photovoltaic module further comprises a spacer bar disposed between the bus bar and the second glass sheet.

In some embodiments, the width of the filler strip is 1cm to 10cm.

In some of these embodiments, the bus bar is a copper strip.

In some of these embodiments, the dual-pane photovoltaic assembly further includes a frame member for securing the first pane, the solar cell, and the second pane.

An embodiment of the present application also provides a power generation apparatus.

A power generation device comprises the double-glass photovoltaic module.

The dual-glass photovoltaic module has stable performance of reliability test items, can meet the current reliability test requirements, reduces materials used for the module, reduces the cost of the module, and realizes cost reduction and efficiency improvement.

According to the double-glass photovoltaic module, the copper strips are adopted to replace tin-coated copper strips in the traditional technology to serve as bus bars, silver paste welding spots on the backlight surface of the solar cell are canceled, and a connecting piece such as an organic silica gel layer with low cost is adopted to replace the silver paste welding spots, so that the use of silver paste is reduced, packaging adhesive films are canceled between the back surface of the solar cell and a second glass plate, and only the bus bars are placed with cushion bars made of adhesive film materials with the width of about 1 cm-10 cm, so that the reduction of materials such as solder paste welding spots and the like in the bus bars, the solar cell, the packaging adhesive films and the organic silica gel layer is realized, the cost is effectively reduced, and the cost reduction and the efficiency enhancement are realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort to a person skilled in the art.

For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts throughout the following description.

FIG. 1 is a schematic view of a dual-glass photovoltaic module according to an embodiment of the present utility model;

fig. 2 is a schematic view of a backlight surface of a solar cell in a dual-glass photovoltaic module according to an embodiment of the utility model.

Description of the reference numerals

10. A dual-glass photovoltaic module; 100. a first glass plate; 200. a second glass plate; 300. a solar cell; 301. a hollowed-out area; 400. packaging the adhesive film; 500. a bus bar; 600. packaging the component; 700. a connecting piece; 800. a filler strip; 900. a frame member.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present utility model, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The embodiment of the application provides a dual-glass photovoltaic module 10 to solve among the conventional art, the welding scheme of battery piece adopts the back electrode battery of scribbling tin copper strips and silver thick liquid printing, and the cost is higher, is unfavorable for reducing the cost and increases efficiency. The dual-pane photovoltaic module 10 will be described below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a dual-glass photovoltaic module 10 according to an embodiment of the present application. The cost of the dual-glass photovoltaic module 10 can be greatly reduced.

For a clearer description of the structure of the dual-glass photovoltaic module 10, the dual-glass photovoltaic module 10 will be described with reference to the accompanying drawings.

For example, referring to fig. 1, fig. 1 is a schematic structural diagram of a dual-glass photovoltaic module 10 according to an embodiment of the present application. A dual-glass photovoltaic assembly 10 includes a first glass plate 100, a second glass plate 200, a solar cell 300, an encapsulation adhesive film 400, a bus bar 500, and an encapsulation member 600.

Referring to fig. 1, a first glass plate 100 and a packaging film 400 are sequentially laminated on a light receiving surface of a solar cell 300. The second glass plate 200 is disposed on the back surface of the solar cell 300. A bus bar 500 is disposed at a portion between the second glass plate 200 and the backlight surface of the solar cell 300, and the bus bar (500) is electrically connected to the back electrode of the solar cell (300). The encapsulation member 600 encapsulates the first glass plate 100 and the second glass plate 200.

In some of these embodiments, the package component 600 may be a packaging film 400. The package member 600 is packaged by a side surface in the thickness direction of the laminated assembly of the first glass plate 100, the solar cell 300, and the second glass plate 200, and a sealed package space for packaging the solar cell 300 is formed between the package member 600, the first glass plate 100, and the second glass plate 200.

In some embodiments, the packaging component 600 may specifically be an EVA film, a POE film, a co-extruded POE film, or the like.

In some of these embodiments, referring to fig. 1, the dual-pane photovoltaic module 10 further includes a connector 700. The bus bar 500 is connected to the backlight surface of the solar cell 300 through the connection member 700.

In some of these embodiments, the solar cell 300 includes several cells. The number of the connection members 700 is plural. The plurality of connecting pieces 700 are distributed at intervals, and each battery piece is correspondingly connected with at least one connecting piece 700. The bus bar 500 is connected to a plurality of battery cells through a plurality of connection members 700. The bus bar 500 realizes current collection to a plurality of battery pieces.

In some of these embodiments, the connector 700 is a silicone layer.

In some embodiments, referring to fig. 2, fig. 2 is a schematic view of a backlight surface of a solar cell 300 in a dual-glass photovoltaic module 10 according to an embodiment of the utility model, wherein the backlight surface of the solar cell 300 has a plurality of hollow areas 301. The corresponding connecting members 700 are disposed in the corresponding hollow areas 301. Compared with the silver paste welding spots arranged on the backlight surface of the solar cell 300 in the prior art, the method and the device cancel the silver paste welding spots, and correspondingly adopt the connecting piece 700 such as an organic silica gel layer to realize the physical connection between the bus bar 500 and the solar cell 300. It will be appreciated that the circuit connection of the bus bar 500 to the solar cell 300 may be according to a circuit design in the conventional art.

In some embodiments, referring again to fig. 1, the portion between the second glass plate 200 and the backlight of the solar cell 300, which is located outside the bus bar 500, is in a vacant state, for example, may be in a vacuum state.

In some of these embodiments, referring to fig. 1, the dual-pane photovoltaic module 10 further includes a spacer 800. A gasket bar 800 is provided between the bus bar 500 and the second glass plate 200.

In some embodiments, the pad strip 800 may be made of a plastic film.

In some of these embodiments, the width of the filler strip 800 is 1cm to 10cm. The size of the spacer 800 is matched with the size of the bus bar 500, and the above arrangement greatly reduces the usage amount of the packaging adhesive film 400 between the backlight surface of the solar cell 300 and the second glass plate 200 in the conventional technology, that is, in this application, most of the positions between the backlight surface of the solar cell 300 and the second glass plate 200 are in a hollowed-out vacuum state, and the reliability and the battery efficiency of the dual-glass photovoltaic module 10 are not affected through testing.

In some of these embodiments, bus bar 500 is a copper strip. In the application, the bus bar 500 eliminates the tin-coated copper belt in the traditional technology, adopts a pure copper belt, reduces the use of tin materials, and effectively reduces the material cost.

In some of these embodiments, referring to fig. 1, dual-pane photovoltaic module 10 also includes a frame member 900. The frame member 900 is used to fix the first glass plate 100, the solar cell 300, and the second glass plate 200.

In some of these embodiments, frame member 900 may be an aluminum frame. The frame member 900 is abutted against the side surface in the thickness direction of the laminated assembly composed of the first glass plate 100, the solar cell 300, and the second glass plate 200.

The reliability of the dual-glass photovoltaic module 10 of the present application and the reliability of the dual-glass photovoltaic module 10 of the welding scheme in the conventional technology were tested and compared, and the comparison results are shown in table 1, and in table 1, the dual-glass photovoltaic module 10 of the present application is labeled "the present application", and the dual-glass photovoltaic module 10 in the conventional technology is labeled "the conventional technology". According to different test items, the maximum power attenuation delta p of the dual-glass photovoltaic module 10 in the application is basically consistent with the maximum power attenuation delta p of the dual-glass photovoltaic module 10 in the traditional technology, that is, the reliability of the dual-glass photovoltaic module 10 in the application is equivalent to the reliability of the dual-glass photovoltaic module 10 in the welding scheme in the traditional technology, and the dual-glass photovoltaic module can be popularized and used as a mass production product.

TABLE 1

An embodiment of the present application also provides a power generation apparatus.

A power generation device comprising the dual-glass photovoltaic module 10 described above. The power plant is not shown in fig. 1 and 2.

In some of these embodiments, a plurality of dual-pane photovoltaic modules 10 may be included in the power plant. The installation position of the dual-glass photovoltaic module 10 can be set according to the actual site.

In some embodiments, it should be noted that the dual-glass photovoltaic modules 10 of the present application may be used together in a plurality of numbers, where one or several junction boxes may be used to connect between the dual-glass photovoltaic modules 10.

In summary, the dual-glass photovoltaic module 10 of the present application has stable performance of reliability test items, can meet the current reliability test requirements, has reduced materials for the module, has reduced module cost, and realizes cost reduction and efficiency improvement. Specifically, the dual-glass photovoltaic module 10 of the application adopts the copper strip to replace the tin-coated copper strip in the traditional technology as the bus bar 500, the silver paste welding point on the backlight surface of the solar cell 300 is cancelled, and the connecting piece 700 such as an organic silica gel layer with low cost is adopted to replace, so that the use of silver paste is reduced, the packaging adhesive film 400 is cancelled between the back surface of the solar cell 300 and the second glass plate 200, and the filler strip 800 made of the adhesive film material with the width of about 1 cm-10 cm is placed on the bus bar 500, so that the reduction of materials such as the bus bar 500, the solar cell 300, the packaging adhesive film 400, the organic silica gel layer, the solder paste welding point and the like is realized, the cost is effectively reduced, and the cost reduction and the efficiency enhancement are realized.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. The utility model provides a dual glass photovoltaic module (10), its characterized in that includes first glass board (100), second glass board (200), solar cell (300), encapsulation glued membrane (400), busbar (500) and encapsulation part (600), first glass board (100) encapsulation glued membrane (400) stack gradually in the light-receiving surface of solar cell (300), second glass board (200) set up in the back light face of solar cell (300), second glass board (200) with part position between the back light face of solar cell (300) is provided with busbar (500), busbar (500) with solar cell (300) electric connection, encapsulation part (600) are used for the encapsulation first glass board (100) with second glass board (200).

2. The dual-glass photovoltaic module (10) of claim 1, wherein the dual-glass photovoltaic module (10) further comprises a connector (700), the bus bar (500) being connected to the backlight of the solar cell (300) by the connector (700).

3. The dual-glass photovoltaic module (10) of claim 2, wherein the connector (700) is a silicone layer.

4. The dual-glass photovoltaic module (10) according to claim 2, wherein the backlight surface of the solar cell (300) has a plurality of hollowed-out areas (301), and the connecting piece (700) is disposed in the corresponding hollowed-out area (301).

5. The dual-glass photovoltaic module (10) according to any one of claims 1 to 4, characterized in that the portion between the second glass plate (200) and the backlight of the solar cell (300) that is located outside the bus bar (500) is in a vacuum state.

6. The dual-glass photovoltaic module (10) according to any of claims 1-4, characterized in that the dual-glass photovoltaic module (10) further comprises a spacer (800), the spacer (800) being arranged between the bus bar (500) and the second glass plate (200).

7. The dual-glass photovoltaic module (10) according to claim 6, wherein the width of the spacer (800) is 1 cm-10 cm.

8. The dual-glass photovoltaic module (10) according to any of claims 1-4, 7, wherein the bus bar (500) is a copper strip.

9. The dual-glass photovoltaic module (10) according to any of claims 1-4, 7, wherein the dual-glass photovoltaic module (10) further comprises a frame member (900), the frame member (900) being used for fixing the first glass sheet (100), the solar cell (300) and the second glass sheet (200).

10. A power plant, characterized by comprising a double-glazing photovoltaic module (10) according to any one of claims 1 to 9.