CN211127697U

CN211127697U - Solar cell module

Info

Publication number: CN211127697U
Application number: CN201921540469.9U
Authority: CN
Inventors: 张民欢; 孙书龙; 梅志强
Original assignee: Guangdong Hanergy Thin Film Solar Co Ltd
Current assignee: Guangdong Hanergy Thin Film Solar Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-07-28
Anticipated expiration: 2029-09-16

Abstract

The utility model discloses a solar module, include: a first light-transmitting layer and a second light-transmitting layer that are provided opposite to each other; the first sealing frame is arranged between the first light-transmitting layer and the second light-transmitting layer and is respectively in sealing connection with the first light-transmitting layer and the second light-transmitting layer so as to form a first sealing cavity; and the front plate of the photovoltaic module is connected with the first euphotic layer. The utility model is different from the prior art that the back plate is directly connected with the euphotic layer in a sealing way, a sealing cavity is formed by the two euphotic layers and the sealing frame, the connection stability between the two euphotic layers is superior to that between the back plate and the euphotic layer, and the sealing stability and the stability of the whole structure of the battery component are further ensured; and because the backplate is not connected with other structures, to its structural strength requirement reduction, can reduce the thickness of backplate, and then promoted the luminousness to reduce subassembly thickness.

Description

Solar cell module

Technical Field

The utility model relates to a photovoltaic technology field, concretely relates to solar module.

Background

With the development of Building Integrated Photovoltaic (BIPV) technology, higher requirements are put on solar modules, and the solar modules are required to have not only better photoelectric conversion rate but also heat and sound insulation function. Therefore, in the prior art, a photovoltaic module and a light-transmitting plate (generally made of glass material) are combined into a whole with good heat insulation and sound insulation functions by using a vacuum technology, specifically, a back plate and the light-transmitting plate of the photovoltaic module with a gap are connected in a sealing manner through a sealing frame, and the back plate, the light-transmitting plate and the sealing frame form a sealing cavity together so as to achieve the sound insulation and heat insulation effects.

However, the back plate of the structure is directly connected with the sealing frame by bonding, and the stability of the sealing connection between the back plate and the sealing frame is poor due to the limitation of the material of the back plate, so that the sealing performance cannot be guaranteed, and the delamination phenomenon is easy to occur.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a solar module to it is relatively poor with sealing frame's sealing connection's stability to solve current backplate, the problem of delaminating phenomenon appears easily.

In order to achieve the above object, the present invention provides the following technical solutions:

a solar cell module comprising:

a first light-transmitting layer and a second light-transmitting layer that are provided opposite to each other;

a first sealing frame disposed between the first and second light transmitting layers, the first sealing frame being in sealing connection with the first and second light transmitting layers, respectively, to enclose a first sealed cavity;

the photovoltaic module is positioned in the first sealing cavity and comprises a front plate, a photoelectric conversion structure and a back plate which are sequentially arranged, and one side, far away from the photoelectric conversion structure, of the front plate is connected with the second euphotic layer.

According to the solar cell module provided by the utility model, the back plate different from the prior art is directly connected with the euphotic layer in a sealing way, and the sealing cavity is formed by the two euphotic layers and the sealing frame, so that the sealing stability and the stability of the whole structure of the cell module are ensured; and because the backplate is not connected with other structures, to its structural strength requirement reduction, can reduce the thickness of backplate, and then promoted the luminousness to reduce subassembly thickness.

In addition, according to the solar cell module of the above embodiment of the present invention, the following additional technical features may also be provided:

according to an example of the present invention, the first sealing frame comprises a frame body and a first sealing structure; the frame body is arranged between the first light-transmitting layer and the second light-transmitting layer; the first sealing structure is arranged on the periphery of the frame body and is respectively connected with the frame body, the first light-transmitting layer and the second light-transmitting layer.

According to an example of the present invention, the first sealing structure fills a space of the first euphotic layer and the second euphotic layer except for the first sealed cavity.

According to an example of the present invention, the first light transmitting layer is provided with a wire routing hole; and the lead of the photovoltaic module passes through the wiring hole to be connected with a junction box.

According to an example of the present invention, a second sealing structure is disposed in the wiring hole, a first end of the second sealing structure is connected to the back plate in a sealing manner, and a second end of the second sealing structure opposite to the first end is connected to the junction box in a sealing manner; the wire extends through the second seal structure via the first and second ends.

According to an example of the present invention, the first light-transmitting layer includes at least two first light-transmitting plates, and is adjacent to each other.

According to an example of the present invention, the first transparent plates are disposed opposite to each other, and a second sealing frame is disposed between the first transparent plates; the second sealing frame is respectively connected with the adjacent first light-transmitting plates in a sealing mode so as to form a second sealing cavity in a surrounding mode.

According to an example of the present invention, the second light transmitting layer includes at least two second light transmitting plates, and is adjacent to each other and connected between the second light transmitting plates.

According to an example of the present invention, the second light-transmitting plates are disposed opposite to each other; a third sealing frame is arranged between the adjacent second light-transmitting plates; the third sealing frame is respectively connected with the adjacent first light-transmitting plates in a sealing mode so as to form a third sealing cavity in a surrounding mode.

According to an example of the present invention, the photoelectric conversion unit is a thin film solar chip.

Advantages of the above additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a top view of a solar cell module according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 4 is a schematic structural diagram of another solar cell module according to an embodiment of the present invention;

fig. 5 is an enlarged view of the portion C of fig. 3.

In the drawings, the components represented by the respective reference numerals are listed below:

100. a first light-transmitting layer; 110. a first light-transmitting panel; 120. a wiring hole; 200. a second light-transmitting layer; 300. A first sealing frame; 310. a frame body; 320. a first seal structure; 400. a photovoltaic module; 410. A front plate, 420, a back plate; 430. a wire; 440. a junction box; 500. a first sealed chamber; 600. a second sealing frame; 700. a second sealed chamber; 800. and a second seal structure.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 4, the present embodiment provides a solar cell module including a first light-transmitting layer 100, a second light-transmitting layer 200, a first sealing frame 300, and a photovoltaic module 400.

The material of the first light-transmitting layer 100 and the second light-transmitting layer 200 in this embodiment may be a glass material with good light-transmitting property and bonding stability, and is preferably ultra-white tempered glass or homogeneous tempered glass with good hardness, high safety and good light-transmitting property, but may also be other light-transmitting materials, such as light-transmitting plastic.

The first light-transmitting layer 100 and the second light-transmitting layer 200 of this embodiment are provided to be opposed to each other, and preferably, are provided in parallel with an interval therebetween; the first sealing frame 300 is disposed between the first light-transmitting layer 100 and the second light-transmitting layer 200, and as shown in fig. 2, the top of the first sealing frame 300 is in sealing connection with the lower surface of the first light-transmitting layer 100, and the bottom of the first sealing frame 300 is in sealing connection with the upper surface of the second light-transmitting layer 200, so that the first sealed interior and the lower surface of the first light-transmitting layer 100 and the upper surface of the second light-transmitting layer 200 together form a first sealed cavity 500.

The photovoltaic module 400 of this embodiment is located in the first sealed cavity 500, the photovoltaic module 400 includes a front plate 410, a photoelectric conversion unit, and a back plate 420, which are sequentially disposed, and further includes a conducting wire 430 penetrating through the back plate 420 and connected to the photoelectric conversion unit, the front plate 410 is connected to the second light-transmitting layer 200, and the back plate 420 and the second light-transmitting layer 200 are disposed at an interval; specifically, the front plate 410 of the present embodiment is adhered to the back plate 420 and the first light-transmitting layer 100 through an encapsulant film.

As can be seen from the above description, the solar cell module of the present embodiment is different from the solar cell module in which the back plate is directly and hermetically connected to the light-transmitting layer, the sealed cavity is formed by the two light-transmitting layers and the sealing frame, the light-transmitting layers are generally made of glass, the direct bonding between the glass and the glass has very high reliability, and the connection stability is significantly better than the connection stability between the back plate and the light-transmitting layer, so as to ensure the sealing stability and the stability of the overall structure of the solar cell module; present backplate 420 thickness is generally greater than 2.5mm, adopts the subassembly structure of this embodiment, can reduce backplate 420's thickness to below 0.5mm, and then has promoted the luminousness greatly to reduce subassembly thickness, can reduce photovoltaic module 400's cost moreover.

As shown in fig. 2 to 4, in order to ensure sealability, the first sealing frame 300 of the present embodiment includes a frame body 310 and a first sealing structure 320; the frame body 310 is disposed between the first light-transmitting layer 100 and the second light-transmitting layer 200, and the shape of the frame body 310 is not exclusive, and the frame body is not necessarily a rectangular or square structure, and may be a frame of other shapes; the frame body 310 may be made of metal, alloy, or polymer, and this embodiment adopts an aluminum profile with light weight and high structural strength.

The first sealing structure 320 of the present embodiment is disposed at the periphery of the frame body 310 and is respectively bonded to the frame body 310, the first light-transmitting layer 100 and the second light-transmitting layer 200; the frame is wrapped by the first sealing structure 320, so that the sealing performance is improved, and the internal photovoltaic module 400 can be well protected.

Preferably, the first sealing structure 320 of the present embodiment is a building adhesive such as a silicone adhesive or a polysulfide adhesive, and has not only good adhesion but also a waterproof function.

Furthermore, the first sealing structure 320 of the present embodiment fills the space between the first transparent layer 100 and the second transparent layer 200 except the first sealed cavity 500, so as to further improve the sealing effect and prolong the service life of the assembly.

Based on the above structure, since the photovoltaic module 400 of the present embodiment is disposed in the first sealed cavity 500, the routing of the photovoltaic module 400 needs to be structurally designed, and as shown in fig. 2 to 4, the wiring hole 120 is disposed in the first light-transmitting layer 100 in the present embodiment; wires 430 of photovoltaic module 400 are threaded through wiring hole 120 to connect to junction box 440.

In order to ensure the sealing performance of the first light-transmitting layer 100 at the routing position, in this embodiment, a second sealing structure 800 is further installed in the routing hole 120, a first end of the second sealing structure 800 is connected to the back plate 420 in a sealing manner, a second end of the second sealing structure 800 opposite to the first end is connected to the junction box 440 in a sealing manner, and the lead 430 of the photovoltaic module 400 penetrates through the second sealing structure 800 through the first end and the second end, so that the sealing performance in the first sealing cavity 500 is ensured.

In addition, in order to further improve the sound insulation and heat insulation effects, the structure of the first light-transmitting layer 100 is further improved in this embodiment, as shown in fig. 5, the first light-transmitting layer 100 of this embodiment includes a plurality of first light-transmitting plates 110, two in this embodiment, and the two first light-transmitting plates 110 are connected with each other; the two first transparent plates 110 are oppositely arranged, and a second sealing frame 600 is arranged between the two first transparent plates 110; the second sealing frames 600 are respectively and sealingly coupled to the adjacent first light-transmitting plates 110 to enclose a second sealing chamber 700.

The second sealing frame 600 of the present embodiment may be the same as the first sealing frame 300, or the second sealing frame 600 may be directly formed by structural adhesive, and the sound insulation performance and the heat insulation performance of the entire solar cell module are further improved by providing the second sealing cavity 700.

Similarly, the second light-transmitting layer 200 may be modified, for example, the second light-transmitting layer 200 is designed to include at least two second light-transmitting plates (the structure is not shown), and adjacent second light-transmitting plates are connected with each other. And similarly, the adjacent second light-transmitting plates are arranged at intervals; a third sealing frame is arranged between the adjacent second light-transmitting plates; the third sealing frames are respectively connected with the adjacent first transparent plates 110 in a sealing manner to form a third sealing cavity, so that the sound insulation performance and the heat insulation performance of the whole solar cell module are further improved.

In addition, the inventor finds that most of the existing photovoltaic modules 400 applied to the Building Integrated Photovoltaic (BIPV) technology are made of silicon materials to manufacture the front plate 410, the silicon materials are easy to crack in the transportation process and are also easy to crack when being influenced by deformation of an adhesive film after being matched with the adhesive film, in addition, the attractiveness of the whole solar cell module is poor due to uneven light scattering of the silicon materials, the inventor also improves the photovoltaic modules 400, the photoelectric conversion units of the photovoltaic modules 400 are designed to be thin film solar chips, the thin film solar chips can be silicon-based thin film cell chips, copper indium gallium selenide chips, cadmium telluride and other thin film materials with good flexibility, such as CICS, crystalline silicon cell chips and the like.

The thin-film solar chip is good in structural stability, the weight of the solar cell module is reduced, and the attractiveness of the solar cell module is improved.

In addition, in order to pursue better heat insulation performance and sound insulation performance, one or more of the first sealed chamber 500, the second sealed chamber 700, and the third sealed chamber may be subjected to a vacuum process such that the sealed chamber becomes a vacuum chamber.

In the description of the present invention, it should be understood that the terms "inside" and "outside" are used for indicating the orientation or the positional relationship based on the orientation or the positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the indicated device must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A solar cell module, comprising:

a first light-transmitting layer (100) and a second light-transmitting layer (200) that are disposed opposite each other;

a first sealing frame (300) disposed between the first light transmitting layer (100) and the second light transmitting layer (200), wherein the first sealing frame (300) is hermetically connected to the first light transmitting layer (100) and the second light transmitting layer (200), respectively, so as to enclose a first sealed cavity (500);

the photovoltaic module (400) is positioned in the first sealed cavity (500), the photovoltaic module (400) comprises a front plate (410), a photoelectric conversion unit and a back plate (420) which are sequentially arranged, and one side, far away from the photoelectric conversion unit, of the front plate (410) is connected with the second euphotic layer (200).

2. The solar cell assembly according to claim 1, wherein the first sealing frame (300) comprises a frame body (310) and a first sealing structure (320); the frame body (310) is disposed between the first and second light-transmitting layers (100, 200); the first sealing structure (320) is disposed at a periphery of the frame body (310) and is connected to the frame body (310), the first light-transmitting layer (100), and the second light-transmitting layer (200), respectively.

3. The solar cell assembly according to claim 2, wherein the first sealing structure (320) fills a space of the first light transmitting layer (100) and the second light transmitting layer (200) except for the first sealed cavity (500).

4. Solar cell module according to claim 1, characterized in that the first light-transmitting layer (100) is provided with a wiring hole (120); the lead (430) of the photovoltaic module (400) passes through the wiring hole (120) and is connected with a junction box (440).

5. The solar cell module according to claim 4, wherein a second sealing structure (800) is disposed in the wiring hole (120), a first end of the second sealing structure (800) is connected to the back plate (420) in a sealing manner, and a second end of the second sealing structure (800) opposite to the first end is connected to the junction box (440) in a sealing manner; the wire (430) extends through the second seal structure (800) via the first and second ends.

6. The solar cell assembly according to claim 1, wherein the first light transmitting layer (100) comprises at least two first light transmitting plates (110), adjacent first light transmitting plates (110) being connected between them.

7. The solar cell assembly according to claim 6, wherein adjacent first light-transmitting plates (110) are oppositely arranged, and a second sealing frame (600) is arranged between adjacent first light-transmitting plates (110); the second sealing frames (600) are respectively connected with the adjacent first light-transmitting plates (110) in a sealing mode to form a second sealing cavity (700).

8. The solar cell assembly according to claim 7, wherein the second light transmitting layer (200) comprises at least two second light transmitting plates, adjacent second light transmitting plates being connected to each other.

9. The solar cell assembly of claim 8 wherein adjacent the second light-transmitting sheet are oppositely disposed; a third sealing frame is arranged between the adjacent second light-transmitting plates; the third sealing frames are respectively connected with the adjacent first light-transmitting plates (110) in a sealing mode to form a third sealing cavity in a surrounding mode.

10. The solar cell module as claimed in any one of claims 1 to 9, wherein the photoelectric conversion unit is a thin film solar chip.