CN219998234U - Photovoltaic module - Google Patents
Photovoltaic module Download PDFInfo
- Publication number
- CN219998234U CN219998234U CN202320667498.1U CN202320667498U CN219998234U CN 219998234 U CN219998234 U CN 219998234U CN 202320667498 U CN202320667498 U CN 202320667498U CN 219998234 U CN219998234 U CN 219998234U
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- layer
- packaging layer
- photovoltaic module
- annular groove
- area
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 61
- 239000000565 sealant Substances 0.000 claims abstract description 17
- 239000010410 layer Substances 0.000 claims description 130
- 238000005538 encapsulation Methods 0.000 claims description 38
- 239000002313 adhesive film Substances 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 15
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000011247 coating layer Substances 0.000 claims description 6
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 4
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 239000008393 encapsulating agent Substances 0.000 claims 3
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000010248 power generation Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The present utility model provides a photovoltaic module comprising: the first packaging layer and the second packaging layer are arranged oppositely, the first packaging layer and the second packaging layer are provided with a battery piece placing area and an edge area, the edge area surrounds the battery piece placement area, and annular grooves are formed in the surfaces, opposite to the edge area, of the first packaging layer and the edge area of the second packaging layer; the solar battery pack is positioned between the battery piece placing area of the first packaging layer and the battery piece placing area of the second packaging layer; and the sealant layer is positioned between the edge area of the first packaging layer and the edge area of the second packaging layer and fills the annular groove. According to the photovoltaic module, on the premise that the creepage distance from the outer side wall of the edge area of the first packaging layer and the outer side wall of the edge area of the second packaging layer to the solar battery pack is unchanged, the photovoltaic conversion efficiency of the photovoltaic module can be improved.
Description
Technical Field
The utility model relates to the technical field of photovoltaic cells, in particular to a photovoltaic module.
Background
With the development of society, renewable energy power generation systems are rapidly growing worldwide. Photovoltaic power generation is the most promising renewable energy power generation mode, at present, a domestic photovoltaic power generation system mainly takes large centralized ground type photovoltaic as a main part, at present, the photovoltaic power generation system is limited by the supply of land resources, the competition of the market of photovoltaic modules is more and more vigorous, and the cost, the service life and the conversion efficiency of the photovoltaic modules become weights for competition of various large manufacturers.
The edge area of the packaging layer of the existing photovoltaic module is large in size, the total area of the photovoltaic module is increased by phase change, and the photovoltaic module is low in photoelectric conversion efficiency. There is also a continuing need for some optimization in structure and materials during the photovoltaic module manufacturing process.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to overcome the defect of low photoelectric conversion efficiency of the photovoltaic module in the prior art, thereby providing the photovoltaic module.
The present utility model provides a photovoltaic module comprising: the battery pack comprises a first packaging layer and a second packaging layer which are oppositely arranged, wherein the first packaging layer and the second packaging layer are respectively provided with a battery piece placing area and an edge area, the edge areas encircle the battery piece placing area, and annular grooves are respectively formed in the surfaces of the first packaging layer, opposite to the edge areas, of the second packaging layer; the solar battery pack is positioned between the battery piece placement area of the first packaging layer and the battery piece placement area of the second packaging layer; and the sealant layer is positioned between the edge area of the first packaging layer and the edge area of the second packaging layer and fills the annular groove.
Optionally, the number of the annular grooves is a plurality, and the plurality of the annular grooves comprises a first annular groove to an Nth annular groove; n is an integer greater than or equal to 2; the N-th annular groove surrounds the N-1-th annular groove, and N is an integer greater than or equal to 2 and less than or equal to N.
Optionally, the top ends of the adjacent annular grooves are continuously arranged.
Optionally, the top ends of the adjacent annular grooves are arranged at intervals, and the interval distance between the top ends of the side walls, which are close to each other, of the adjacent annular grooves is between 0mm and 0.5mm.
Optionally, the width of the annular groove is 4 mm-5 mm; the depth of the annular groove is 0.3 mm-0.6 mm.
Optionally, the longitudinal section of the annular groove in the width direction is U-shaped, triangular, trapezoidal or wavy.
Optionally, the width of the sealant layer is 11.5 mm-12.5 mm.
Optionally, the sealant layer includes a butyl adhesive layer.
Optionally, the method further comprises: a first adhesive film and a second adhesive film; the first adhesive film is positioned between the battery piece placement area of the first packaging layer and the solar battery pack, and the second adhesive film is positioned between the battery piece placement area of the second packaging layer and the solar battery pack.
Optionally, the first packaging layer is a back plate package, and the first packaging layer includes: an insulation base layer; a first fluorocarbon coating layer on one side surface of the insulation base layer; a second fluorocarbon coating layer on the other side surface of the insulation base layer; the first fluorocarbon coating is directed toward the solar cell stack; an annular groove of an edge region of the first encapsulation layer passes through the first fluorocarbon coating in a depth direction of the annular groove and extends to a partial thickness of the insulation base layer.
The technical scheme of the utility model has the following beneficial effects:
according to the photovoltaic module provided by the utility model, the annular grooves are formed in the surfaces of the edge area of the first packaging layer and the opposite surface of the edge area of the second packaging layer, and the annular grooves are filled with the sealant layer. The sealing glue layer can be embedded into the annular groove to improve the sealing performance, so that external water vapor can be prevented from invading the inside of the photovoltaic module to corrode the battery piece, the power attenuation probability of the photovoltaic module is further reduced, and the service life of the photovoltaic module is prolonged. And secondly, annular grooves are formed in the edge area of the first packaging layer and the edge area of the second packaging layer, and the transverse widths of the edge area of the first packaging layer and the edge area of the second packaging layer can be reduced on the premise that the creepage distance from the outer side wall of the edge area of the first packaging layer and the outer side wall of the edge area of the second packaging layer to the solar battery pack is unchanged, so that the area of the photovoltaic module is reduced, and the photoelectric conversion efficiency of the photovoltaic module is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a first package layer or a second package layer according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a longitudinal cross section of an annular groove in the width direction thereof according to an embodiment of the present utility model;
FIG. 4 is a schematic view of another shape of a longitudinal section of an annular groove in its width direction in an embodiment of the present utility model;
FIG. 5 is a schematic view of a third shape of a longitudinal section of an annular groove in its width direction in an embodiment of the present utility model;
FIG. 6 is another schematic diagram of the first package layer or the second package layer according to an embodiment of the present utility model;
FIG. 7 is a schematic view of a fourth shape of a longitudinal section of an annular groove in its width direction in an embodiment of the present utility model;
reference numerals illustrate:
1-a first encapsulation layer; 2-a solar cell stack; 3-a sealant layer; 4-an annular groove; 4 a-a first annular groove; 4 b-a second annular groove; 4 c-a third annular groove; 5-an annular groove; 5 a-a first annular groove; 5 b-a second annular groove; 6-a second encapsulation layer; 7-a first adhesive film; 8-a second adhesive film.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Referring to fig. 1 to 2 in combination, the present utility model provides a photovoltaic module including: the first packaging layer 1 and the second packaging layer 6 are oppositely arranged, the first packaging layer 1 and the second packaging layer 6 are respectively provided with a cell placement area and an edge area, the edge area surrounds the cell placement area, and annular grooves 4 are respectively formed in the surfaces of the edge areas of the first packaging layer 1 and the second packaging layer 6, which are opposite; a solar cell set 2 positioned between the cell placement area of the first encapsulation layer 1 and the cell placement area of the second encapsulation layer 6; and a sealant layer 3 which is positioned between the edge area of the first packaging layer 1 and the edge area of the second packaging layer 6 and fills the annular groove 4.
In this embodiment, the surfaces of the edge region of the first encapsulation layer 1 and the edge region of the second encapsulation layer 6 opposite to each other are provided with annular grooves 4, and the sealant layer 3 fills the annular grooves 4. The sealing glue layer 3 can be embedded into the annular groove 4 to improve the sealing performance, so that external water vapor can be prevented from invading the inside of the photovoltaic module to corrode the battery piece, the probability of power attenuation of the photovoltaic module is further reduced, and the service life of the photovoltaic module is prolonged. Secondly, be provided with annular groove 4 in the marginal zone of first encapsulation layer 1 with the marginal zone of second encapsulation layer 6, satisfy the marginal zone of first encapsulation layer 1 with the lateral wall of the marginal zone of second encapsulation layer 6 is unchangeable to solar cell group 2's creepage distance under the prerequisite, the lateral width of the marginal zone of first encapsulation layer 1 and the marginal zone of second encapsulation layer 6 can reduce to reduce photovoltaic module's area, improve photovoltaic module's photoelectric conversion efficiency.
Photovoltaic conversion efficiency of photovoltaic module = power of photovoltaic module/area of photovoltaic module.
In one embodiment, the number of the annular grooves 4 is a plurality, and the plurality of annular grooves 4 includes a first annular groove to an nth annular groove; n is an integer greater than or equal to 2; the N-th annular groove surrounds the N-1-th annular groove, and N is an integer greater than or equal to 2 and less than or equal to N.
In this embodiment, the first annular groove is an innermost annular groove, and the nth annular groove is an outermost annular groove.
In one embodiment, the tips of adjacent annular grooves 4 are disposed continuously. The density of the annular grooves 4 is increased, so that the transverse width of the edge area of the first encapsulation layer 1 and the edge area of the second encapsulation layer 6 can be reduced on the premise that the creepage distance from the outer side wall of the edge area of the first encapsulation layer 1 and the edge area of the second encapsulation layer 6 to the solar battery pack 2 is not changed, and the area of the first encapsulation layer 1 and the area of the second encapsulation layer 6 can be reduced.
Referring to fig. 2, the annular groove 4 includes a first annular groove 4a, a second annular groove 4b, and a third annular groove 4c, n being equal to 3. It should be noted that in other embodiments, N may be other values.
Referring to fig. 3, the longitudinal cross-sectional shape of the annular groove 4 in the width direction thereof is triangular.
Referring to fig. 4, the longitudinal cross-sectional shape of the annular groove 4 in the width direction thereof is trapezoidal.
Referring to fig. 5, the longitudinal cross-sectional shape of the annular groove 4 in the width direction thereof is wavy.
In other embodiments, the longitudinal cross-sectional shape of the annular groove in the width direction is other shapes.
In another embodiment, referring to fig. 6, adjacent annular grooves 5 are spaced apart, and the spacing between adjacent annular grooves 5 at the tips of the sidewalls that are adjacent to each other is between 0mm and 0.5mm, and exemplary, the spacing between adjacent annular grooves 5 at the tips of the sidewalls that are adjacent to each other is 0.1mm, 0.2mm, 0.3mm, 0.4mm, or 0.5mm. In fig. 7 x represents the spacing between adjacent said annular grooves 5.
The annular groove 5 comprises a first annular groove 5a and a second annular groove 5b, n being equal to 2. It should be noted that in other embodiments, N may be other values.
Referring to fig. 7, the longitudinal cross-sectional shape of the annular groove 5 in the width direction thereof is a "U" shape. In other embodiments, the longitudinal cross-sectional shape of the annular groove in the width direction is other shapes.
In other embodiments, the annular groove includes one annular groove, and the number of annular grooves is not limited.
In one embodiment, the width of the annular groove 4 is 4mm to 5mm, for example 4mm, 4.5mm or 5mm. If the width of the annular groove 4 is too large, the speed of filling the sealant layer 3 into the annular groove 4 is slower in the process of subsequent lamination heating of the first packaging layer 1 and the second packaging layer 6; if the width of the annular groove 4 is too small, the overall width of the annular groove 4 filled with the sealant layer 3 is too small, and the sealing effect of the photovoltaic module is improved.
In one embodiment, the depth of the annular groove 4 is 0.3mm to 0.6mm, for example 0.3mm, 0.4mm, 0.5mm or 0.6mm. If the depth of the annular groove 4 is too large, the thickness of the photovoltaic module is increased, which is not beneficial to realizing the light and thin photovoltaic module; if the depth of the annular groove 4 is too small, the degree of preventing outside moisture from invading the solar cell module is small.
In one embodiment, the sealant layer 3 comprises a butyl layer. The sealant layer 3 is located in the edge area of the first packaging layer 1 and the edge area of the second packaging layer 6 and fills the annular groove 4, and as the butyl adhesive layer has good water blocking performance, external water vapor can be prevented from invading the inside of the photovoltaic module, and the tightness of the photovoltaic module is improved.
In one embodiment, the width of the sealant layer 3 is 11.5mm to 12.5mm, for example 11.5mm, 12mm or 12.5mm. If the dimensions of the edge regions of the first encapsulation layer 1 and the second encapsulation layer 6 are too large, the distance between the solar cells is reduced, and the photovoltaic module is easy to be short-circuited; if the dimensions of the edge regions of the first encapsulation layer 1 and the second encapsulation layer 6 are too small, the insulation distance is too small, which is easy to cause electric leakage of the photovoltaic module.
The width of the sealant layer 3 is equal to the dimensions of the edge area of the first encapsulation layer 1 and the edge area of the second encapsulation layer 6, that is, the creepage distance around the photovoltaic module is equal.
In one embodiment, the first encapsulation layer 1 comprises a glass encapsulation layer, a back plate encapsulation layer, or a flexible encapsulation layer; the second encapsulation layer 6 comprises a glass encapsulation layer or a flexible encapsulation layer.
In one embodiment, the first encapsulation layer 1 is a back plate encapsulation layer. The first encapsulation layer 1 includes: an insulation base layer; a first fluorocarbon coating layer on one side surface of the insulation base layer; a second fluorocarbon coating layer on the other side surface of the insulation base layer; the first fluorocarbon coating is directed towards the solar cell stack 2; an annular groove 4 of the edge region of the first encapsulation layer 1 passes through the first fluorocarbon coating in the depth direction of the annular groove 4 and extends to a part of the thickness of the insulation base layer.
The first encapsulation layer 1 further includes: a metal layer positioned between the insulation base layer and the second fluorocarbon coating.
In one embodiment, the metal layer comprises a metal foil; for example, the metal foil includes aluminum foil. In other embodiments, the material of the metal layer also includes other metals.
In one embodiment, the insulation base layer comprises a polyethylene terephthalate base layer.
The photovoltaic module further includes: the first adhesive film 7 is positioned between the cell placement area of the first packaging layer 1 and the solar cell set 2; and the second adhesive film 8 is positioned between the cell placement area of the second packaging layer 6 and the solar cell set 2.
In one embodiment, the first adhesive film 7 comprises a polyethylene-polyvinyl acetate copolymer adhesive film, a polyvinyl butyral adhesive film, or an ethylene-octene copolymer adhesive film; the second adhesive film 8 comprises a polyethylene-polyvinyl acetate copolymer adhesive film, a polyvinyl butyral adhesive film or an ethylene-octene copolymer adhesive film.
In one embodiment, the solar cell set 2 includes a plurality of parallel solar cell strings, and the solar cell strings include a plurality of solar cell sheets connected in series.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (10)
1. A photovoltaic module, comprising:
the battery pack comprises a first packaging layer and a second packaging layer which are oppositely arranged, wherein the first packaging layer and the second packaging layer are respectively provided with a battery piece placing area and an edge area, the edge areas encircle the battery piece placing area, and annular grooves are respectively formed in the surfaces of the first packaging layer, opposite to the edge areas, of the second packaging layer;
the solar battery pack is positioned between the battery piece placement area of the first packaging layer and the battery piece placement area of the second packaging layer;
and the sealant layer is positioned between the edge area of the first packaging layer and the edge area of the second packaging layer and fills the annular groove.
2. The photovoltaic module according to claim 1, wherein the number of the annular grooves is a plurality, and the plurality of the annular grooves includes first to nth annular grooves; n is an integer greater than or equal to 2; the N-th annular groove surrounds the N-1-th annular groove, and N is an integer greater than or equal to 2 and less than or equal to N.
3. The photovoltaic module of claim 2, wherein the tips of adjacent annular grooves are disposed consecutively.
4. The photovoltaic module of claim 2, wherein adjacent annular groove tips are spaced apart, and wherein adjacent annular grooves are spaced apart from each other by a sidewall tip distance of between 0mm and 0.5mm.
5. The photovoltaic module of claim 1, wherein the annular groove has a width of 4mm to 5mm; the depth of the annular groove is 0.3 mm-0.6 mm.
6. The photovoltaic module according to claim 1, wherein the longitudinal cross-sectional shape of the annular groove in the width direction thereof is "U" -shaped, triangular, trapezoidal, or wavy.
7. The photovoltaic module of any of claims 1-6, wherein the sealant layer has a width of 11.5mm to 12.5mm.
8. The photovoltaic module of any of claims 1-6, wherein the sealant layer comprises a butyl adhesive layer.
9. The photovoltaic module of any of claims 1-6, further comprising: a first adhesive film and a second adhesive film; the first adhesive film is positioned between the battery piece placement area of the first packaging layer and the solar battery pack, and the second adhesive film is positioned between the battery piece placement area of the second packaging layer and the solar battery pack.
10. The photovoltaic module of any of claims 1-6, wherein the first encapsulant layer is a backsheet encapsulant, the first encapsulant layer comprising: an insulation base layer; a first fluorocarbon coating layer on one side surface of the insulation base layer; a second fluorocarbon coating layer on the other side surface of the insulation base layer; the first fluorocarbon coating is directed toward the solar cell stack; an annular groove of an edge region of the first encapsulation layer passes through the first fluorocarbon coating in a depth direction of the annular groove and extends to a partial thickness of the insulation base layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320667498.1U CN219998234U (en) | 2023-03-29 | 2023-03-29 | Photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320667498.1U CN219998234U (en) | 2023-03-29 | 2023-03-29 | Photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219998234U true CN219998234U (en) | 2023-11-10 |
Family
ID=88616014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320667498.1U Active CN219998234U (en) | 2023-03-29 | 2023-03-29 | Photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219998234U (en) |
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- 2023-03-29 CN CN202320667498.1U patent/CN219998234U/en active Active
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Address after: No. 99 Qingliu Road, Xuancheng Economic and Technological Development Zone, Xuancheng City, Anhui Province Patentee after: Anhui Huasheng New Energy Technology Co.,Ltd. Country or region after: China Address before: Science and Technology Park, Xuancheng Economic and Technological Development Zone, Xuancheng City, Anhui Province Patentee before: Anhui Huasheng New Energy Technology Co.,Ltd. Country or region before: China |