CN210575976U

CN210575976U - Photovoltaic module

Info

Publication number: CN210575976U
Application number: CN201921703101.XU
Authority: CN
Inventors: 王晓伟; 曹阳; 杨峰; 许涛
Original assignee: CSI Cells Co Ltd; Canadian Solar Manufacturing Changshu Inc
Current assignee: CSI Cells Co Ltd; Canadian Solar Manufacturing Changshu Inc
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-05-19
Anticipated expiration: 2029-10-12

Abstract

The utility model discloses a photovoltaic module, which comprises an upper cover plate, an upper packaging adhesive film, a battery piece, a lower packaging adhesive film and a lower back plate which are sequentially distributed from top to bottom, wherein a packaging space for accommodating the battery piece is formed between the upper cover plate and the lower back plate, a bulge which extends into the packaging space is arranged on the inner surface of the upper cover plate and/or the lower back plate, and the bulge is positioned at the periphery of the battery piece arrangement area; based on the utility model provides a photovoltaic module's structure, protruding form the support to edge between them between upper cover plate and the backplate down, and then can avoid upper cover plate and backplate to appear the crooked problem among the prior art in border position department down when photovoltaic module lamination, can effectively improve photovoltaic module's reliability.

Description

Photovoltaic module

Technical Field

The utility model relates to a photovoltaic field especially relates to a photovoltaic module.

Background

Referring to fig. 1 and 2, the photovoltaic module includes, in order from top to bottom, an upper cover plate 11, an upper encapsulant film 12, a battery piece 13, a lower encapsulant film 14, and a lower back plate 15. In the prior art, in the lamination process of the photovoltaic module, the upper cover plate 11 is easily bent at the edge position as shown in a part a in fig. 2, and the upper cover plate 11 accumulates stress at the bent part, so that in the later application process of the photovoltaic module, due to the influence of factors such as aging, the stress release of the bent part can cause the delamination between the upper cover plate 11 and the packaging adhesive film, and further the reliability of the photovoltaic module is influenced.

In view of the problem of bending the edge region of the upper cover plate 11, the bending degree of the edge of the upper cover plate 11 can only be weakened by controlling the lamination process, but the problem cannot be completely solved by the lamination process control.

In view of the above, there is a need to provide an improved solution to the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that prior art exists at least, for realizing the utility model purpose of the aforesaid, the utility model provides a photovoltaic module, its concrete design mode as follows.

The utility model provides a photovoltaic module, includes from last upper cover plate, last encapsulation glued membrane, battery piece, lower encapsulation glued membrane and lower backplate that distribute in proper order down, be formed with between upper cover plate and the lower backplate and hold the encapsulation space of battery piece, the upper cover plate and/or be equipped with the protruding arch of going into in the encapsulation space on the internal surface of backplate down, the arch is located the regional periphery is set up to the battery piece.

Furthermore, the photovoltaic module is rectangular, and the plurality of protrusions comprise first protrusions formed at four corner positions of the photovoltaic module.

Further, the photovoltaic module is rectangular, and the plurality of protrusions comprise second protrusions formed at non-corner positions of the photovoltaic module.

Further, the height of the protrusions is 0.5-1.5 mm.

Further, the cross section of the bulge is in a shape of a circle, a triangle, a square or other polygons.

Further, the distance between the farthest two points on the cross section of the protrusion is 5-8 mm.

Furthermore, a plurality of grooves are formed on the outer surface of the upper cover plate and/or the outer surface of the lower back plate, which are provided with the protrusions, in a concave manner, the grooves and the protrusions are arranged in a one-to-one correspondence manner, and the projection of each protrusion on the surface of one side of the photovoltaic module is positioned in the projection range of the corresponding groove on the surface of the side.

Further, the depth of the groove is not less than the height of the corresponding protrusion.

The utility model has the advantages that: based on the utility model provides a photovoltaic module's structure, protruding form the support to edge between them between upper cover plate and the backplate down, and then can avoid upper cover plate and backplate to appear the crooked problem among the prior art in border position department down when photovoltaic module lamination, can effectively improve photovoltaic module's reliability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a prior art photovoltaic module prior to lamination;

FIG. 2 is a schematic cross-sectional view of a photovoltaic module after lamination in the prior art;

fig. 3 is a schematic plan view of an embodiment of the photovoltaic module of the present invention;

3 FIG. 3 4 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 taken 3 at 3 the 3 position 3 A 3- 3 A 3' 3 of 3 FIG. 3 3 3; 3

FIG. 5 is a schematic plan view of a packaged glass sheet according to the present invention;

FIG. 6 is a schematic cross-sectional view of a stack of several encapsulated glass sheets;

fig. 7 is a schematic cross-sectional view of another embodiment structure of the photovoltaic module of the present invention.

In the drawings, 11 is a prior art upper cover plate, 12 is a prior art upper packaging adhesive film, 13 is a prior art battery piece, 14 is a prior art lower packaging adhesive film, and 15 is a prior art lower back plate;

200 does the utility model discloses a packaging glass board, 20 are protruding, and 201 is first arch, and 202 is the second arch, and 203 is the recess, and 21 is the utility model provides an upper cover plate, 22 is the utility model provides an go up the packaging rubber membrane, 23 is the utility model provides a battery piece, 24 are the utility model provides a lower packaging rubber membrane, 25 are shown to be the utility model provides a lower backplate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a photovoltaic module, refer to fig. 3, fig. 4 shows, it includes from last to lower upper cover plate 21 that distributes in proper order, go up encapsulation glued membrane 22, battery piece 23, down encapsulation glued membrane 24 and lower backplate 25, wherein, be formed with the encapsulation space that holds battery piece 23 between upper cover plate 21 and the lower backplate 25, be equipped with protruding arch 20 of going into in the encapsulation space on the internal surface of upper cover plate 21 and/or lower backplate 25, and protruding 20 is located battery piece 23 and sets up regional periphery.

Based on the utility model provides a structure of encapsulation glass board, in specifically being applied to photovoltaic module, arch 20 forms the support to edge between them between upper cover plate 21 and backplate 25 down, so can avoid upper cover plate 21 and backplate 25 to appear the bending problem among the prior art in border position department when photovoltaic module laminated forming, and then can reduce upper cover plate 21 in photovoltaic module later stage use, backplate 25 and the probability of encapsulation glue separation between the two down, effectively improve photovoltaic module's reliability.

For better understanding of the present invention, the upper cover plate 21 formed with the protrusions 20 and the lower back plate 25 formed with the protrusions 20 are collectively referred to as a package glass plate hereinafter. Referring to fig. 3, 5 and 6, the sealing glass plate includes a plate body 200, and a plurality of protrusions 20 are formed on one side surface of the plate body 200.

Referring to fig. 3 and 4, in the present embodiment, the lower back plate 25 is formed by the packaging glass plate provided by the present invention, at this time, the surface of the lower back plate 25 formed with the protrusion 20 is disposed toward the side where the battery piece 23 is located, and when the photovoltaic module is formed, the protrusion 20 protrudes into the packaging space.

In another embodiment of the present invention, referring to fig. 7, the upper cover plate 21 of the photovoltaic module is composed of the packaging glass plate provided by the present invention, and at this time, the surface of the upper cover plate 21 formed with the protrusions 20 is disposed toward one side of the battery piece 23.

It is understood that in other embodiments of the present invention, not shown, the upper cover plate 21 and the lower back plate 25 of the photovoltaic module are both made of the packaging glass plate provided by the present invention. At this time, the surfaces of the upper cover plate 21 and the lower back plate 25 on which the protrusions 20 are formed are both disposed toward the side where the battery piece 23 is located.

Some preferred embodiments of the encapsulated glass sheet according to the invention are described further below:

referring to fig. 3, in the present embodiment, the photovoltaic module has a rectangular shape, and accordingly, the plate body 200 of the encapsulating glass plate has a rectangular shape, and the plurality of protrusions 20 include first protrusions 201 formed at four corner positions of the plate body 200. In the prior art, the corner position of the photovoltaic module is easier to be layered than other positions, and the problem can be solved by the arrangement of the first protrusion 201.

In another embodiment of the present invention, referring to fig. 5, the related sealing glass plate further has a second protrusion 202 formed at a non-corner position of the plate body 200 on the basis of the structure of the sealing glass plate shown in fig. 3. It will be appreciated that in other, not shown embodiments of the invention, the bumps 20 involved in the encapsulating glass sheet may also comprise only the second bumps 202, and not the first bumps 201.

In the specific implementation, the height h1 of the protrusion 20 of the present invention is 0.5-1.5 mm. The specific setting parameters can be adjusted according to the thickness of the upper packaging adhesive film 22, the battery piece 23, the lower packaging adhesive film 24 and other parameters.

In the present invention, the cross-sectional shape of the protrusion 20 is circular as shown in fig. 3 and 5, and may be triangular, square or other polygonal shapes. In addition, the distance between the farthest points on the cross section of the protrusion 20 is 5-8 mm; for example, the cross-section of the protrusion 20 shown in fig. 3 and 5 is circular, the two points farthest away in the circular cross-section are two end points of a diameter, and the diameter d of the circular cross-section is in the range of 5-8 mm.

As a preferred embodiment of the present invention, the outer surface of the upper cover plate 21 and/or the lower back plate 25, which are formed with the protrusions 20, is recessed to form a plurality of grooves 203, the grooves 203 are disposed in one-to-one correspondence with the protrusions 20, and the projection of each protrusion 20 on one side surface of the photovoltaic module is located in the projection range of the corresponding groove 203 on the side surface.

As shown in fig. 6, the glass plate for forming the upper cover plate 21 and the lower back plate 25 of the present invention has a plurality of grooves 203 formed on a side surface of the plate body 200, wherein the grooves 203 and the protrusions 20 are disposed on different surfaces of the plate body 200 and are in one-to-one correspondence, and the projection of each protrusion 20 on a side surface of the plate body 200 is disposed in the projection range of the corresponding groove 203 on the side surface.

Based on the arrangement mode of the grooves 203, the stacking relation shown in fig. 6 can be formed among the plurality of packaging glass plates, namely, the protrusions 20 of one packaging glass plate are embedded into the grooves 203 of the other packaging glass plate, so that the stacking gap between two adjacent packaging glass plates can be reduced, the storage space can be effectively saved in the storage or transportation process of large quantities of packaging glass plates, and the problem that the packaging glass plates are broken due to serious sagging of the middle area of the upper packaging glass plate and even the packaging glass plate is caused due to the large stacking gap can be avoided.

As a further optimization of this embodiment, in the specific implementation, the depth of the groove 203 is not less than the height of the corresponding protrusion 20. Therefore, in the scene of stacking the multilayer packaging glass plates, the two adjacent packaging glass plates are contacted with each other at a zero gap, and the phenomenon that the upper layer packaging glass is sagged or even broken due to the gap can be completely avoided.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a photovoltaic module, includes from top to bottom upper cover plate, last encapsulation glued membrane, battery piece, lower encapsulation glued membrane and lower backplate that distribute in proper order, be formed with between upper cover plate and the lower backplate and hold the encapsulation space of battery piece, its characterized in that, upper cover plate and/or be equipped with the protruding arch of stretching in the encapsulation space on the internal surface of backplate down, the arch is located the regional periphery is set up to the battery piece.

2. The assembly according to claim 1, wherein the assembly is rectangular and the plurality of protrusions includes first protrusions formed at four corner locations of the assembly.

3. The assembly according to claim 1, wherein the assembly is rectangular and the plurality of protrusions includes second protrusions formed at non-corner locations of the assembly.

4. A photovoltaic module according to any of claims 1 to 3, wherein the height of the protrusions is 0.5-1.5 mm.

5. A photovoltaic module according to any of claims 1 to 3, wherein the cross-sectional shape of the protrusions is circular, triangular or square.

6. A photovoltaic module according to any of claims 1-3, characterized in that the distance between the furthest points on the cross-section of the protrusions is 5-8 mm.

7. The photovoltaic module according to any one of claims 1 to 3, wherein a plurality of grooves are formed on the outer surface of the upper cover plate and/or the lower back plate on which the protrusions are formed, the grooves and the protrusions are arranged in a one-to-one correspondence, and the projection of each protrusion on one side surface of the photovoltaic module is located within the projection range of the corresponding groove on the side surface.

8. The photovoltaic module of claim 7, wherein the depth of the groove is not less than the height of the corresponding protrusion.