CN219917181U

CN219917181U - Solar panel

Info

Publication number: CN219917181U
Application number: CN202320550369.4U
Authority: CN
Inventors: 陈文辉; 汤杰虎; 陈熙; 王雷
Original assignee: Ecoflow Technology Ltd
Current assignee: Ecoflow Technology Ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-10-27
Anticipated expiration: 2033-03-16

Abstract

The utility model relates to the technical field of solar power supply equipment, and particularly discloses a solar panel. The solar panel comprises a battery piece layer, the battery piece layer comprises a battery piece and an EPE sealing layer, and the EPE sealing layer is arranged on the periphery of the battery piece in a surrounding mode. The solar panel further comprises a first protective layer and a second protective layer, and the first protective layer and the second protective layer are arranged on two opposite sides of the cell layer. The EPE sealing layer is arranged on the periphery of the battery piece in a surrounding mode, insulation protection to the battery piece can be formed, meanwhile, water vapor can be effectively reduced from entering the inside of the battery piece from the periphery of the battery piece, the possibility that the water vapor enters the inside of the solar panel is reduced, and the water vapor blocking performance of the solar panel is improved. And compared with the textile fabric which is easy to generate wrinkles, the integral structure process of the EPE sealing layer is simpler and more convenient to implement, the EPE sealing layer is smoother, and the lamination yield is higher.

Description

Solar panel

Technical Field

The utility model relates to the technical field of solar power supply equipment, in particular to a solar panel.

Background

A solar cell is a photovoltaic semiconductor sheet that directly generates electricity using sunlight. When the solar cell is used as a power supply, a plurality of single solar cells are connected in series and parallel and are tightly packaged into a component. The solar panel is an assembly of a plurality of solar cells, which is a core part of a solar power generation system and is the most important part of the solar power generation system.

At present, most solar panels are packaged by adopting a cloth layer as a packaging layer and pressing the cloth layer on the surface of a battery piece, but in the packaging mode, water vapor easily permeates the packaging layer or permeates into the battery piece from a layer gap under a high-humidity and high-heat environment, so that the wet leakage functionality test of the solar panels fails.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a solar panel that can improve the water vapor blocking performance and effectively improve the problem of water vapor entering the inside of the solar panel structure.

The embodiment of the utility model provides a solar panel, which comprises a battery piece layer, wherein the battery piece layer comprises a battery piece and an EPE sealing layer, and the EPE sealing layer is arranged on the periphery of the battery piece in a surrounding mode. The solar panel further comprises a first protective layer and a second protective layer, and the first protective layer and the second protective layer are arranged on two opposite sides of the cell layer.

The solar panel has the advantages that the EPE sealing layer has good insulation and water vapor blocking performance, the EPE sealing layer is arranged on the periphery of the battery piece in a surrounding mode, insulation protection to the battery piece can be formed, meanwhile, the possibility that water vapor enters the inside of the battery piece from the periphery of the battery piece can be effectively reduced, and therefore the possibility that the water vapor enters the inside of the solar panel is reduced, and the water vapor blocking performance of the solar panel is improved. And compared with the textile fabric which is easy to generate wrinkles, the integral structure process of the EPE sealing layer is simpler and more convenient to implement, the EPE sealing layer is smoother, and the lamination yield is higher.

In at least one embodiment, the EPE seal layer is a light blocking layer.

In the above-mentioned embodiment, the light shielding layer can restrict light and pass through to can shelter from the internal circuit that is located battery piece layer week side, avoid the internal connection circuit of disorder to expose, thereby improve solar panel's outward appearance uniformity, and then improve user's experience effect.

In at least one embodiment, the EPE seal layer includes a first EVA coating layer, a PET material layer, and a second EVA coating layer, which are sequentially stacked.

In the embodiment, the PET material layer has good mechanical property and good folding endurance, so that the EPE sealing layer is not easy to break in the process of processing and forming the solar panel. The EVA material has excellent corrosion resistance and scratch resistance, has the advantages of good buffering, heat insulation, moisture resistance, chemical corrosion resistance and the like, and the first EVA coating layer and the second EVA coating layer are arranged on two sides of the PET material layer, so that the service performance of the EPE sealing layer can be further improved, the water vapor blocking performance of the solar panel is further improved, and the problem that water vapor enters the solar panel structure is solved.

In at least one embodiment, the EPE seal layer comprises a plurality of seal strips that are connected end to end in sequence.

In the above embodiment, the EPE sealing layer is formed by sequentially connecting a plurality of sealing strips end to end, so that the sealing strips with different numbers and different lengths are selected for splicing according to the sizes of different battery pieces, and the sizes of the EPE sealing layer can be matched with the sizes of the battery pieces.

In at least one embodiment, the EPE seal layer is a unitary structure.

In the above embodiment, the EPE sealing layer is provided as an integral structure, so that the assembling steps in the process of manufacturing the solar panel can be reduced, the EPE sealing layer is conveniently laminated on the battery piece, and the production efficiency of the solar panel is improved.

In at least one embodiment, the battery sheet layer further comprises a first adhesive layer disposed between the battery sheet and the EPE seal layer, and the battery sheet is connected to the EPE seal layer by the first adhesive layer.

In the above embodiment, the first adhesive layer is used for connecting the battery piece and the EPE sealing layer, so that the connection firmness of the battery piece and the EPE sealing layer can be improved, and the gap at the connection position of the battery piece and the EPE sealing layer is reduced, thereby improving the tightness between the battery piece and the EPE sealing layer, and making water vapor not easy to enter the battery piece from the connection position of the battery piece and the EPE sealing layer.

In at least one embodiment, the first protective layer includes an ETFE layer and a second adhesive layer, the ETFE layer being connected to the battery tab layer by the second adhesive layer.

In the embodiment, the ETFE layer has excellent performances of ageing resistance, ultraviolet resistance, water seepage resistance, high temperature and high humidity resistance, fire resistance, insulation and the like, so that the adoption of the ETFE layer as the protective layer can improve the performances of ageing resistance, water seepage resistance, high temperature and high humidity resistance and the like of the solar panel. And adopt the second adhesive linkage to connect ETFE layer and battery piece layer, can improve ETFE layer and battery piece layer junction's leakproofness, further improve the waterproof nature of battery piece.

In at least one embodiment, the second protective layer includes a support plate and a third adhesive layer, the support plate being connected to the battery sheet layer by the third adhesive layer.

In the above embodiment, the supporting plate can support the battery piece, so that the overall structural strength of the solar panel is improved, and the solar panel is not easy to bend and break in the using and carrying processes. The third bonding layer is used for connecting the supporting plate and the battery piece layer, so that the firmness of connection between the supporting plate and the battery piece layer can be improved, and water vapor is not easy to enter the battery piece from the connection part of the supporting plate and the battery piece layer, so that the water vapor blocking performance of the battery piece is improved.

In at least one embodiment, the second protective layer further comprises a flexible layer and a fourth adhesive layer, wherein the flexible layer is arranged on one side of the support plate, which is away from the battery sheet layer, and is connected with the support plate through the fourth adhesive layer.

In the embodiment, the flexible layer has good flexibility, can protect the internal structure of the solar panel, and enables the outer surface of the solar panel to be difficult to wear.

In at least one embodiment, the support plate is a fiberglass plate.

In the embodiment, the glass fiber board has good insulation property and high temperature resistance, and the reliability of the solar panel can be improved. And the glass fiber board has good flatness and smooth surface, so that the overall flatness of the solar panel can be improved.

Drawings

Fig. 1 is a schematic view of the overall structure of a solar panel according to an embodiment of the present utility model.

Fig. 2 is a schematic view of an exploded structure of a solar panel in one embodiment of the present utility model.

Description of the main reference signs

100-solar panel 11-cell layer 111-cell

112-EPE seal 1121-sealing tape 113-first adhesive layer

12-first protective layer 121-ETFE layer 122-second adhesive layer

13-second protective layer 131-supporting plate 132-third adhesive layer

133 Flexible layer 134 fourth adhesive layer

The utility model will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

The following description of the technical solutions according to the embodiments of the present utility model will be given with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. 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 connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. 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. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

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 terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present utility model, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

It should be noted that, the dimensions of thickness, length, width, etc. of the various components and the dimensions of the overall thickness, length, width, etc. of the integrated device in the embodiments of the present utility model shown in the drawings are only illustrative, and should not be construed as limiting the present utility model.

In view of the above, the embodiments of the present utility model provide a solar panel to improve the water vapor blocking performance and effectively improve the problem that water vapor enters the solar panel structure. The solar panel comprises a battery piece layer, the battery piece layer comprises a battery piece and an EPE sealing layer, and the EPE sealing layer is arranged on the periphery of the battery piece in a surrounding mode. The solar panel further comprises a first protective layer and a second protective layer, and the first protective layer and the second protective layer are arranged on two opposite sides of the cell layer.

Embodiments of the present utility model will be further described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the embodiment of the utility model provides a solar panel 100, which includes a cell layer 11, a first protection layer 12 and a second protection layer 13, wherein the first protection layer 12 and the second protection layer 13 are disposed on opposite sides of the cell layer 11, so that the first protection layer 12 and the second protection layer 13 can protect the cell layer 11, and the solar panel 100 is not damaged easily during working or handling.

In an embodiment, the area of the first protection layer 12 is larger than the area of the battery layer 11, the area of the second protection layer 13 is also larger than the area of the battery layer 11, and the first protection layer 12 and the second protection layer 13 can cover the battery layer 11 inside to protect the battery layer 11.

In an embodiment, the battery sheet layer 11 includes the battery sheet 111 and the EPE sealing layer 112, where the EPE sealing layer 112 has good insulation and water vapor blocking properties, and the EPE sealing layer 112 is disposed around the periphery of the battery sheet 111 to form insulation protection for the battery sheet 111, and meanwhile, the possibility that water vapor enters the inside of the battery sheet 111 from the periphery of the battery sheet 111 can be effectively reduced, so that the possibility that water vapor enters the inside of the solar panel 100 is reduced, and the water vapor blocking property of the solar panel 100 is improved. And the overall construction process of EPE seal layer 112 is simpler to implement than a woven fabric that is prone to wrinkling. The EPE seal layer 112 is more planar and the lamination yield is higher when the lamination process is performed.

Referring to fig. 1 and 2, in one embodiment, the battery sheet 111 is used to convert light energy into electrical energy and store the electrical energy in the battery sheet 111. The battery sheet 111 may be a single-sided battery sheet or a double-sided battery sheet.

The battery sheet layer 11 includes a plurality of battery sheets 111, the plurality of battery sheets 111 are arranged in an array, and the plurality of battery sheets 111 are electrically connected through internal circuits, the internal circuits are generally distributed on the periphery of the overall structure formed by the plurality of battery sheets 111, that is, the internal circuits are distributed on the periphery side of the battery sheet layer 11, and the orthographic projection of the internal circuits on the battery sheet layer 11 falls within the range of the EPE sealing layer 112.

In one embodiment, EPE sealing layer 112 is a light shielding layer. The shading layer is generally black light-tight, and the shading layer can restrict light penetration to can shelter from the internal circuit that is located battery piece layer 11 week side, avoid the internal circuit of mess to expose, thereby improve solar panel 100's outward appearance uniformity, and then improve user's experience effect.

In one embodiment, the EPE seal layer 112 corresponds to a PET composite layer, and the EPE seal layer 112 includes a first EVA (Polyethylene vinylacetate, polyethylene-polyvinyl acetate copolymer) coating layer (not shown), a PET (Polyethylene terephthalate ) material layer (not shown), and a second EVA coating layer (not shown), which are sequentially laminated. The first EVA coating layer is arranged on one side of the PET material layer facing the battery piece 111, and the second EVA coating layer is arranged on one side of the PET material layer facing away from the battery piece 111.

In the above embodiment, the PET material layer has good mechanical properties and good folding endurance, so that the EPE sealing layer 112 is not easy to break during the processing and forming process of the solar panel 100. The EVA material has excellent corrosion resistance and scratch resistance, has the advantages of good buffering, heat insulation, moisture resistance, chemical corrosion resistance and the like, and the first EVA coating layer and the second EVA coating layer are arranged on two sides of the PET material layer, so that the service performance of the EPE sealing layer 112 can be further improved, the water vapor blocking performance of the solar panel 100 is further improved, and the problem that water vapor enters the inside of the solar panel 100 structure is solved. The first EVA coating layer and the second EVA coating layer are both manufactured through a coating process.

Referring to fig. 2, in an embodiment, the EPE sealing layer 112 includes a plurality of sealing strips 1121, where the plurality of sealing strips 1121 are connected end to end in sequence, so that according to the sizes of different battery pieces 111, the sealing strips 1121 with different numbers and different lengths are selected for splicing, so that the size of the EPE sealing layer 112 can be matched with the size of the battery piece 111.

Referring to FIG. 2, in one embodiment, EPE sealing layer 112 includes four sealing strips 1121, and four sealing strips 1121 are connected end to end in sequence to form a "back" type structure. The battery piece 111 is arranged in the middle of the reverse-U-shaped structure, so that the periphery of the battery piece 111 is attached to the sealing strip 1121, and the water-vapor blocking performance of the battery piece 111 is improved. It will be appreciated that in other embodiments, the number of sealing strips 1121 may be two or three.

In another embodiment, the EPE sealing layer 112 is of an integral structure, which can reduce assembly steps in the process of manufacturing the solar panel 100, facilitate lamination of the EPE sealing layer 112 to the cell sheet 111, and improve the production efficiency of the solar panel 100.

Referring to fig. 2, in an embodiment, the battery sheet layer 11 further includes a first adhesive layer 113, the first adhesive layer 113 is disposed between the battery sheet 111 and the EPE sealing layer 112, and the battery sheet 111 is connected to the EPE sealing layer 112 through the first adhesive layer 113.

For example, the battery sheet 111 is adhered to the first EVA coating layer of the EPE sealing layer 112 by the first adhesive layer 113 to achieve connection of the battery sheet 111 and the EPE sealing layer 112. The shape and size of the first adhesive layer 113 may be set according to the shape and size of the EPE seal layer 112. For example, when the EPE seal layer 112 has a "back" shape, the first adhesive layer 113 is also "back" shaped, and the first adhesive layer 113 is adhered to the outer periphery of the battery sheet 111.

It is understood that the first adhesive layer 113 may have a square shape, and one surface of the first adhesive layer 113 is adhered to the battery sheet 111, and the other surface is adhered to the first EVA coating layer of the EPE seal layer 112.

In the above embodiment, the first adhesive layer 113 connects the battery piece 111 and the EPE sealing layer 112, so that the connection firmness of the battery piece 111 and the EPE sealing layer 112 can be improved, and the gap between the battery piece 111 and the EPE sealing layer 112 is reduced, so that the tightness between the battery piece 111 and the EPE sealing layer 112 is improved, and moisture is not easy to enter the battery piece 111 from the connection position between the battery piece 111 and the EPE sealing layer 112.

In one embodiment, the first adhesive layer 113 is an EVA (Polyethylene vinylacetate, polyethylene-polyvinyl acetate copolymer) adhesive film layer, and the EVA adhesive film is a thermosetting adhesive film, and has good adhesion, durability and optical properties, so that the battery sheet 111 and the EPE sealing layer 112 can be firmly connected. In other embodiments, the first adhesive layer 113 may also be a POE (Polyolefin elastomer ) adhesive film layer.

Referring to fig. 1 and 2, in one embodiment, the first protective layer 12 includes an ETFE (Ethylene-tetrafluoroethylene copolymer) layer 121 and a second adhesive layer 122, and the ETFE layer 121 is connected to the battery layer 11 through the second adhesive layer 122, for example, the ETFE layer 121 is connected to the EPE sealing layer 112 of the battery layer 11 through the second adhesive layer 122. The ETFE layer 121 has excellent anti-aging, anti-ultraviolet, anti-water-seepage, anti-high temperature and high humidity, fireproof and insulating properties, so that the anti-aging, anti-water-seepage and anti-high temperature and high humidity properties of the solar panel 100 can be improved by adopting the ETFE layer 121 as the protective layer.

It will be appreciated that in other embodiments, ETFE layer 121 may be replaced with a polyvinylidene fluoride (PVDF) layer, a Chlorotrifluoroethylene (CTFE) layer, or the like.

In addition, the second adhesive layer 122 is used to connect the ETFE layer 121 and the battery sheet layer 11, so that the sealing property of the junction between the ETFE layer 121 and the battery sheet layer 11 can be improved, and the waterproof property of the battery sheet 111 can be further improved. In an embodiment, the second adhesive layer 122 is an EVA adhesive film layer, which has good adhesion, so that the ETFE layer 121 and the battery layer 11 are tightly connected, and the water vapor blocking performance of the junction between the ETFE layer 121 and the battery layer 11 is improved. In other embodiments, the second adhesive layer 122 may also be a POE adhesive film layer.

Referring to fig. 1 and 2, in an embodiment, the second protective layer 13 includes a support plate 131 and a third adhesive layer 132, and the support plate 131 is connected to the battery sheet 11 through the third adhesive layer 132. The supporting plate 131 can support the battery piece 111, so that the overall structural strength of the solar panel 100 is improved, and the solar panel 100 is not easy to bend and break in the using and carrying processes. The third bonding layer 132 is used for connecting the supporting plate 131 and the battery piece layer 11, so that the connection firmness of the supporting plate 131 and the battery piece layer 11 can be improved, and water vapor is not easy to enter the battery piece 111 from the connection position of the supporting plate 131 and the battery piece layer 11, so that the water vapor blocking performance of the battery piece 111 is improved.

In one embodiment, the support plate 131 is a fiberglass plate. The glass fiber board has good insulation and high temperature resistance, and can improve the reliability of the solar panel 100. In addition, the glass fiber board has good flatness and smooth surface, so that the flatness of the whole solar panel 100 can be improved. In other embodiments, the support plate 131 may be made of other materials with supporting function, such as aluminum alloy sheet.

In an embodiment, the third adhesive layer 132 is an EVA adhesive film layer, which can make the connection between the support plate 131 and the battery piece layer 11 tight, so as to improve the water vapor blocking performance at the connection between the support plate 131 and the battery piece layer 11. In other embodiments, the third adhesive layer 132 may be a POE adhesive film layer.

Referring to fig. 1 and 2, in an embodiment, the second protective layer 13 further includes a flexible layer 133 and a fourth adhesive layer 134, where the flexible layer 133 is disposed on a side of the support plate 131 facing away from the battery sheet 11, and is connected to the support plate 131 through the fourth adhesive layer 134. The flexible layer 133 has good flexibility, can protect the internal structure of the solar panel 100, and makes the outer surface of the solar panel 100 less prone to abrasion.

For example, the flexible layer 133 is a cloth layer, and the cloth layer can protect the solar panel 100 and reduce abrasion of the solar surface caused by collision.

The fourth adhesive layer 134 may also be an EVA adhesive film layer, where the fourth adhesive layer 134 is disposed between the flexible layer 133 and the support plate 131, so as to improve the water resistance at the connection between the flexible layer 133 and the support plate 131, and reduce the water vapor entering the battery layer 11. In other embodiments, the fourth adhesive layer 134 may also be a POE adhesive film layer.

When the solar panel 100 is manufactured, the structural layers are paved in sequence and then laminated, and the whole structure process is simple and convenient to implement.

In the above embodiment, the EPE sealing layer 112 is disposed around the periphery of the cell 111, so that moisture entering the cell 111 from the periphery of the cell 111 can be effectively reduced, and thus the possibility that moisture enters the solar panel 100 is reduced, so as to improve the water vapor blocking performance of the solar panel 100. And compared with the textile fabric which is easy to generate wrinkles, the integral structure process of the EPE sealing layer 112 is simpler and more convenient to implement, the EPE sealing layer 112 is smoother, and the lamination yield is higher.

Further, other variations within the spirit of the present utility model will occur to those skilled in the art, and it is intended, of course, that such variations be included within the scope of the present utility model as disclosed herein.

Claims

1. The solar panel comprises a battery piece layer and is characterized in that the battery piece layer comprises a battery piece and an EPE sealing layer, and the EPE sealing layer is arranged on the periphery of the battery piece in a surrounding mode;

the solar panel further comprises a first protective layer and a second protective layer, and the first protective layer and the second protective layer are arranged on two opposite sides of the cell layer;

the EPE sealing layer comprises a first EVA coating layer, a PET material layer and a second EVA coating layer, wherein the first EVA coating layer, the PET material layer and the second EVA coating layer are sequentially laminated.

2. The solar panel of claim 1, wherein the EPE seal layer is a light blocking layer.

3. The solar panel according to any one of claims 1 to 2, wherein the EPE sealing layer comprises a plurality of sealing strips, a plurality of sealing strips being connected end to end in sequence.

4. The solar panel according to any one of claims 1 to 2, wherein the EPE sealing layer is of unitary construction.

5. The solar panel of any one of claims 1 to 2, wherein the cell layer further comprises a first adhesive layer disposed between the cell and the EPE seal layer, and the cell is connected to the EPE seal layer by the first adhesive layer.

6. The solar panel of any one of claims 1 to 2, wherein the first protective layer comprises an ETFE layer and a second adhesive layer, the ETFE layer being connected to the cell layer by the second adhesive layer.

7. The solar panel according to any one of claims 1 to 2, wherein the second protective layer comprises a support plate and a third adhesive layer, the support plate being connected to the cell layer by the third adhesive layer.

8. The solar panel of claim 7, wherein the second protective layer further comprises a flexible layer and a fourth adhesive layer, the flexible layer being disposed on a side of the support plate facing away from the cell layer and being connected to the support plate by the fourth adhesive layer.

9. The solar panel of claim 7, wherein the support plate is a fiberglass plate.