CN216311799U

CN216311799U - Photovoltaic module and photovoltaic system

Info

Publication number: CN216311799U
Application number: CN202122265921.9U
Authority: CN
Inventors: 范圣凯; 何志富; 申佳林; 朱琛; 吕俊; 仲超; 何宏夙
Original assignee: Taizhou Longi Solar Technology Co Ltd
Current assignee: Taizhou Longi Solar Technology Co Ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-04-15
Anticipated expiration: 2031-09-15

Abstract

The utility model discloses a photovoltaic module and a photovoltaic system, relates to the technical field of photovoltaics, and aims to solve the problem that the solar energy utilization rate of the photovoltaic module is not high. The photovoltaic module comprises a cover plate, a first light wave conversion layer, a battery sheet layer, a second light wave conversion layer, a light wave reflection layer and a back plate which are sequentially stacked from top to bottom. The first light wave conversion layer is used for packaging the cover plate and the battery sheet layer and converting a long wave band penetrating through the cover plate into a short wave band. The second light wave conversion layer is used for packaging the cell sheets and the back plate and converting the short wave band penetrating between the cell sheets into a long wave band. The light wave reflection layer is used for reflecting the long wave band from the second light wave conversion layer to the cell sheet layer. The photovoltaic system comprises the photovoltaic module provided by the technical scheme. The photovoltaic module provided by the utility model is used for photovoltaic technology.

Description

Photovoltaic module and photovoltaic system

Technical Field

The utility model relates to the technical field of photovoltaics, in particular to a photovoltaic module and a photovoltaic system.

Background

As a class of Photovoltaic modules with special appearances, black Photovoltaic modules are popular with customers in markets such as europe, the united states, japan and the like, and are suitable for being applied to roof and Building integration projects (abbreviated as BIPV).

At present, in order to obtain uniform black appearance component products in the market, all manufacturers generally adopt dark-colored batteries and package black photovoltaic components by overlapping black photovoltaic back plates. For black photovoltaic back panels, back panel manufacturers have introduced a variety of black photovoltaic back panels, including all black back panels and black mesh back panels made of black light absorbing materials such as conventional carbon black, which have very low reflectivity (< 5%). Therefore, manufacturers have also introduced black high-reflectivity backplanes, which have higher photovoltaic module output than conventional black backplanes and black mesh backplanes. In view of this, the prior art proposes a back sheet for a solar cell module, which uses at least three kinds of colored materials to form a black back sheet for a solar cell module, but fails to improve the solar energy utilization rate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a photovoltaic module and a photovoltaic system, and aims to solve the problem that the solar energy utilization rate of the photovoltaic module is not high.

In order to achieve the above purpose, the utility model provides the following technical scheme:

in a first aspect, the present invention provides a photovoltaic module, which includes a cover plate, a first light wave conversion layer, a cell layer, a second light wave conversion layer, a light wave reflection layer, and a back plate, which are sequentially stacked from top to bottom. The first light wave conversion layer is used for packaging the cover plate and the battery sheet layer and converting a long wave band penetrating through the cover plate into a short wave band. The second light wave conversion layer is used for packaging the cell sheets and the back plate and converting the short wave band penetrating between the cell sheets into a long wave band. The light wave reflection layer is used for reflecting the long wave band from the second light wave conversion layer to the cell sheet layer.

Compared with the prior art, in the photovoltaic module provided by the utility model, the first light wave conversion layer can encapsulate the cover plate and the cell layer of the photovoltaic module, and can convert long-wave band light projected through the cover plate into short-wave band light, namely, one high-energy photon can be converted into more than two low-energy photons which can be utilized, so that the low-energy photons which can be utilized are absorbed by the cell layer, and the light energy utilization efficiency is improved. The second light wave conversion layer can encapsulate the cell sheet layer and the back plate of the photovoltaic module, and can convert the short-wave band light penetrating through the cell sheet gap into long-wave band light, so that the light wave reflection layer below the second light wave conversion layer reflects the long-wave band light back to the cell sheet layer. The light wave reflecting layer can reflect the long-wave band light transmitted by the cell gap and the long-wave band light converted by the second light wave conversion layer back to the cell sheet layer, so that the part of the long-wave band light which is not absorbed by the cell sheet layer can be absorbed by the cell sheet layer again, the light wave utilization rate is further improved, meanwhile, the part of the light which is not absorbed by the cell sheet layer is reflected back to the cell sheet layer, the part of the light can be prevented from being absorbed by a back plate or a roof, and the temperature of the photovoltaic module during working is reduced.

From the above, the photovoltaic module provided by the utility model can solve the problem of low solar energy utilization rate in the prior art.

In one possible implementation, the first light wave conversion layer is a blue first light wave conversion layer, the second light wave conversion layer is a yellow second light wave conversion layer, and the light wave reflection layer is a red light wave reflection layer. Or the first light wave conversion layer is a blue first light wave conversion layer, the second light wave conversion layer is a red second light wave conversion layer, and the light wave reflection layer is a yellow light wave reflection layer.

Under the condition of adopting the technical scheme, the first light wave conversion layer is blue, the second light wave conversion layer and the light wave reflection layer can be respectively red or yellow, the color of the light absorbed by the blue first light wave conversion layer, the yellow second light wave conversion layer and the red light wave reflection layer is approximate to black according to the different colors, and similarly, the color of the light absorbed by the blue first light wave conversion layer, the red second light wave conversion layer and the yellow light wave reflection layer is approximate to black. Therefore, the photovoltaic module provided by the utility model can realize the black appearance of the photovoltaic module on the premise of improving the solar energy utilization rate. In addition, most of the existing battery pieces are blue, and the chromatic aberration between the battery pieces and the photovoltaic module can be weakened by adopting the blue first light wave conversion layer, so that the photovoltaic module is more attractive. When the building roof is applied to the building roof, the appearance of the building can be beautified.

In one possible implementation, the first light wave conversion layer comprises at least one first light wave conversion functional layer. Or the first light wave conversion layer comprises at least one first light wave conversion functional layer and at least one first adhesive film layer which are sequentially stacked from top to bottom or from bottom to top.

Under the condition of adopting the technical scheme, when the first light wave conversion layer comprises at least one first light wave conversion function layer, the first light wave conversion function layer not only has the light wave conversion function, but also has the packaging function, the two functions are integrated, the whole first light wave conversion layer can realize the light wave conversion function, and the light wave conversion efficiency can be improved. When the first light wave conversion layer comprises at least one first light wave conversion functional layer and at least one first adhesive film layer which are sequentially stacked from top to bottom or from bottom to top, the first light wave conversion functional layer is used for realizing the light wave conversion function, and the first adhesive film layer is used for realizing the packaging effect of the first light wave conversion functional layer and the cover plate or the first light wave conversion functional layer and the battery sheet layer. So set up, not only can be better match the technology on the photovoltaic module production line for the design is more nimble, can also reduce the cost of coloured material.

In a possible implementation, in case the first light wave conversion layer comprises at least one first light wave conversion functional layer, the first light wave conversion functional layer is a blue first light wave conversion functional layer; and/or the thickness of the first light wave conversion function layer is 50-1000 μm. Under the condition that the first light wave conversion layer comprises at least one first light wave conversion functional layer and at least one first adhesive film layer which are sequentially stacked from top to bottom or from bottom to top, the first light wave conversion functional layer is a blue first light wave conversion functional layer, and the first adhesive film layer is a light-transmitting first adhesive film layer; the total thickness of the first light wave conversion functional layer is 25-500 mu m; the total thickness of the first adhesive film layer is 25-500 mu m.

By adopting the technical scheme, the light-transmitting first adhesive film layer can not only realize the packaging effect on the first light wave conversion functional layer and the cover plate or the first light wave conversion functional layer and the battery sheet layer, but also reduce the use of colored materials, and further reduce the cost of the colored materials. In addition, the first glued membrane layer of printing opacity can not shelter from all the other layers of photovoltaic module yet, has avoided the harmful effects to photovoltaic module's solar energy utilization ratio.

In one possible implementation, the second light wave conversion layer comprises at least one second light wave conversion functional layer. Or the second light wave conversion layer comprises at least one second light wave conversion functional layer and at least one second film layer which are sequentially stacked from top to bottom or from bottom to top.

Under the condition of adopting the technical scheme, when the second light wave conversion layer comprises at least one second light wave conversion function layer, the second light wave conversion function layer not only has the light wave conversion function, but also has the packaging function, the two functions are integrated, the whole second light wave conversion layer can realize the light wave conversion function, and the light wave conversion efficiency can be improved. When the second light wave conversion layer comprises at least one second light wave conversion functional layer and at least one second adhesive film layer which are sequentially stacked from top to bottom or from bottom to top, the second light wave conversion functional layer is used for realizing the light wave conversion function, and the second adhesive film layer is used for realizing the packaging effect of the second light wave conversion functional layer and the battery sheet layer or the second light wave conversion functional layer and the light wave reflection layer. So set up, not only can be better match the technology on the photovoltaic module production line for the design is more nimble, can also reduce the cost of coloured material.

In a possible implementation, in the case that the second light wave conversion layer comprises at least one second light wave conversion functional layer, the second light wave conversion functional layer is a yellow second light wave conversion functional layer; or the second light wave conversion function layer is a red second light wave conversion function layer. And/or the thickness of the second light wave conversion function layer is 50-1000 μm. Under the condition that the second light wave conversion layer comprises at least one second light wave conversion functional layer and at least one second glue film layer which are sequentially stacked from top to bottom or from bottom to top, the second light wave conversion functional layer is a yellow second light wave conversion functional layer, and the second glue film layer is a light-transmitting second glue film layer; or the second light wave conversion function layer is a red second light wave conversion function layer, and the second adhesive film layer is a light-transmitting second adhesive film layer. The total thickness of the second light wave conversion functional layer is 25-500 mu m; the total thickness of the second adhesive film layer is 25-500 μm.

Under the condition of adopting above-mentioned technical scheme, the encapsulation effect to second light wave conversion functional layer and battery lamella or second light wave conversion functional layer and light wave reflection stratum not only can be realized to the printing opacity second glued membrane layer, can also reduce the use of coloured material, and then reduce the cost of coloured material. In addition, the light-transmitting second adhesive film layer can not shield other layers of the photovoltaic module, and adverse effects on the solar energy utilization rate of the photovoltaic module are avoided.

In one possible implementation, the thickness of the light wave reflecting layer is 5-500 μm.

In one possible implementation, the photovoltaic module is a single-glass photovoltaic module, and the light wave reflection layer includes a light wave reflection functional layer. Or the photovoltaic module is a double-glass photovoltaic module, and the light wave reflection layer comprises a light wave reflection functional layer and at least one third adhesive film layer which are laminated together.

Under the condition of adopting above-mentioned technical scheme, when photovoltaic module is single glass photovoltaic module, the light wave reflection functional layer is used for reflecting the long wave band light that battery piece clearance saw through and the long wave band light that passes through the conversion of second light wave conversion layer back to the battery lamella for this part can be absorbed by the battery lamella once more by this part long wave band light that is not absorbed by the battery lamella, and then improve the light wave utilization ratio, simultaneously, with this part not by the battery lamella absorbed light reflection back to the battery lamella, can also avoid this part light to be absorbed by the backplate or by the roof absorption, make the temperature reduction of photovoltaic module during operation. When the photovoltaic module is a dual-glass photovoltaic module, the light wave reflection functional layer is used for achieving the functions, and the third adhesive film layer is used for packaging the light wave reflection functional layer and the back glass or the light wave reflection functional layer and the second light wave conversion functional layer. So set up, not only can be better match the technology on the photovoltaic module production line for the design is more nimble, can also reduce the cost of coloured material.

In one possible implementation, in the case where the light wave reflective layer includes a light wave reflective functional layer, the light wave reflective functional layer is a red light wave reflective functional layer; or the light wave reflection functional layer is a yellow light wave reflection functional layer. Under the condition that the light wave reflection layer comprises a light wave reflection functional layer and at least one third adhesive film layer which are laminated together, the light wave reflection functional layer is a red light wave reflection functional layer, and the third adhesive film layer is a light-transmitting third adhesive film layer; or the light wave reflection functional layer is a yellow light wave reflection functional layer, and the third adhesive film layer is a light-transmitting third adhesive film layer.

Under the condition of adopting above-mentioned technical scheme, the third glued membrane layer of printing opacity not only can realize the encapsulation effect to light wave reflection functional layer and back glass, perhaps to light wave reflection functional layer and second light wave conversion functional layer, can also reduce the use of coloured material, and then reduce the cost of coloured material. In addition, the light-transmitting third adhesive film layer can not shield other layers of the photovoltaic module, so that the adverse effect on the solar energy utilization rate of the photovoltaic module is avoided.

In a second aspect, the present invention further provides a photovoltaic system, including the photovoltaic module described in the first aspect and/or any possible implementation manner of the first aspect.

Compared with the prior art, the beneficial effects of the photovoltaic system provided by the utility model are the same as those of the photovoltaic module in the technical scheme, and the details are not repeated here.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 to 6 are schematic structural views of a single-glass photovoltaic module according to an embodiment of the present invention;

fig. 7 to 20 are schematic structural views of a dual-glass photovoltaic module according to an embodiment of the present invention.

Reference numerals:

100-photovoltaic glass, 200-first light wave conversion layer,

201-a first light wave conversion functional layer, 202-a first glue film layer,

300-cell layer, 400-second light wave conversion layer,

401-a second light wave conversion functional layer, 402-a second glue film layer,

501-a first light wave reflection functional layer, 502-a PET substrate layer,

503-fluorine-containing layer, 600-light wave reflecting layer,

601-a second light wave reflection functional layer, 602-a third glue film layer,

701-a third light wave conversion functional layer, 702-a third light wave reflection functional layer,

703-a fourth glue film layer.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

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 defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1, a photovoltaic module according to an embodiment of the present invention includes a cover plate, a first light wave conversion layer 200, a cell layer 300, a second light wave conversion layer 400, a light wave reflection layer, and a back plate sequentially stacked from top to bottom. The first light wave conversion layer 200 serves to encapsulate the cover plate and the cell layer 300, and to convert a long wavelength band transmitted through the cover plate into a short wavelength band. The second light wave conversion layer 400 serves to encapsulate the cell layers 300 and the back sheet and to convert the short wavelength band transmitted between the cells into a long wavelength band. The light wave reflecting layer serves to reflect the long wavelength band from the second light wave converting layer 400 to the cell sheet layer 300.

In the specific implementation: firstly, a cover plate, a first light wave conversion layer 200, a cell layer 300, a second light wave conversion layer 400, a light wave reflection layer and a back plate which are used for manufacturing the photovoltaic module are sequentially stacked from top to bottom. And finally, packaging the photovoltaic module according to a conventional packaging process to obtain the photovoltaic module meeting the requirements.

It can be understood that, when the photovoltaic module is a single-glass photovoltaic module, the cover plate is the photovoltaic glass 100, and the back plate is a photovoltaic back plate. When above-mentioned photovoltaic module is dual-glass photovoltaic module, above-mentioned apron is photovoltaic glass 100, and the backplate also is photovoltaic glass 100 equally.

In practical applications, sunlight enters the first light wave conversion layer 200 from the photovoltaic glass 100 of the photovoltaic module, the first light wave conversion layer 200 converts long-wavelength band light into short-wavelength band light, and the short-wavelength band light enters the cell layer 300 and is absorbed by the cell layer 300, so that the light energy is converted into electric energy. The short wavelength band light passing through the cell gap is converted into long wavelength band light by the second light wave conversion layer 400, the long wavelength band light converted by the second light wave conversion layer 400 and the long wavelength band light passing through the cell gap enter the light wave reflection layer, and the light wave reflection layer reflects the long wavelength band light back to the cell layer 300.

As can be seen from the structure and the specific implementation process of the photovoltaic module, the first light wave conversion layer 200 can not only encapsulate the cover plate and the cell layer 300 of the photovoltaic module, but also convert long-wavelength band light projected through the cover plate into short-wavelength band light, that is, convert one high-energy photon into more than two low-energy photons which can be utilized, so that the low-energy photons which can be utilized are absorbed by the cell layer, thereby improving the efficiency of light energy utilization. The second light wave conversion layer 400 can encapsulate the cell layer 300 and the back sheet of the photovoltaic module, and can also convert the short-wavelength band light penetrating through the cell gap into long-wavelength band light, so that the light wave reflection layer below the second light wave conversion layer 400 reflects the long-wavelength band light back to the cell layer 300. The light wave reflection layer can reflect the long-wave band light transmitted by the cell gap and the long-wave band light converted by the second light wave conversion layer 400 back to the cell layer 300, so that the part of the long-wave band light which is not absorbed by the cell layer 300 can be absorbed by the cell layer 300 again, the light wave utilization rate is further improved, meanwhile, the part of the light which is not absorbed by the cell layer 300 is reflected back to the cell layer 300, the part of the light can be prevented from being absorbed by a back plate or a roof, and the temperature of the photovoltaic module during working is reduced.

As a possible implementation, the first light wave conversion layer 200 is a blue first light wave conversion layer 200, the second light wave conversion layer 400 is a yellow second light wave conversion layer 400, and the light wave reflection layer is a red light wave reflection layer. Or, the first light wave conversion layer 200 is a blue first light wave conversion layer 200, the second light wave conversion layer 400 is a red second light wave conversion layer 400, and the light wave reflection layer is a yellow light wave reflection layer.

In the case of the above technical solution, the first light wave conversion layer 200 is blue, the second light wave conversion layer 400 and the light wave reflection layer may be red or yellow, respectively, and according to the difference in color of light that can be absorbed by different colors, the color of light that is absorbed by the blue first light wave conversion layer 200, the yellow second light wave conversion layer 400 and the red light wave reflection layer is approximately black, and similarly, the color of light that is absorbed by the blue first light wave conversion layer 200, the red second light wave conversion layer 400 and the yellow light wave reflection layer is also approximately black. Therefore, the photovoltaic module provided by the utility model can realize the black appearance of the photovoltaic module on the premise of improving the solar energy utilization rate. In addition, most of the existing cells are blue, and the chromatic aberration between the cells and the photovoltaic module can be weakened by adopting the blue first light wave conversion layer 200, so that the photovoltaic module has better aesthetic property. When the building roof is applied to the building roof, the appearance of the building can be beautified.

It should be noted that, when the second light wave conversion layer 400 is yellow, the color of the light wave reflection layer needs to be red. Alternatively, when the second light wave conversion layer 400 is red, the color of the light wave reflection layer needs to be yellow. Namely, the two can not select the same color at the same time, so as to avoid influencing the aesthetic property of the appearance of the photovoltaic module.

Illustratively, the blue first light wave conversion layer 200 is primarily a blue up-conversion material, which may be NaYF₄:Yb³⁺/Tm³⁺The blue upconversion can also be NaGdF₄. The second light-wave conversion layer 400 is mainly a red or yellow down-conversion material, which may be a mixture of rare-earth doped oxide and colored dye. Wherein the rare earth doped oxide may be SrYF₄：Er³⁺、YVO₄:Eu³⁺Or YF₃: yb, and the like. The light wave reflecting layer is mainly made of high reflection colored dye, the high reflection colored dye can be a mixture of high reflection materials and colored dye, the high reflection materials can be inorganic materials or organic materials, the inorganic materials comprise zinc oxide, titanium white powder or hollow ceramic powder and the like, and the organic materials comprise organic fibers. The colored dye can be organic pigment, wherein, the red organic pigment comprises anthraquinone, quinacridone, diketopyrrolopyrrole and the like; the yellow organic pigment includes quinophthalone and isoindoline. The embodiment of the present invention is not limited thereto.

As a possible implementation, the first light wave conversion layer 200 includes at least one first light wave conversion functional layer 201. Or, the first light wave conversion layer 200 includes at least one first light wave conversion functional layer 201 and at least one first adhesive film layer 202 stacked in sequence from top to bottom or from bottom to top.

With the above technical solution, when the first light wave conversion layer 200 includes at least one first light wave conversion function layer 201, the first light wave conversion function layer 201 not only has a light wave conversion function, but also has a packaging function, and the two functions are integrated into a whole, so that the whole first light wave conversion layer 200 can realize the light wave conversion function, thereby improving the light wave conversion efficiency. When the first light wave conversion layer 200 includes at least one first light wave conversion functional layer 201 and at least one first adhesive film layer 202, which are sequentially stacked from top to bottom or from bottom to top, the first light wave conversion functional layer 201 is used to implement a light wave conversion function, and the first adhesive film layer 202 is used to implement a packaging function of the first light wave conversion functional layer 201 and the cover plate or the first light wave conversion functional layer 201 and the battery sheet layer 300. So set up, not only can be better match the technology on the photovoltaic module production line for the design is more nimble, can also reduce the cost of coloured material.

In some embodiments, in the case where the first light wave conversion layer 200 includes at least one first light wave conversion functional layer 201, the first light wave conversion functional layer 201 is a blue first light wave conversion functional layer 201; and/or the thickness of the first light wave conversion function layer 201 is 50-1000 μm. In the case that the first light wave conversion layer 200 includes at least one first light wave conversion functional layer 201 and at least one first adhesive film layer 202, which are sequentially stacked from top to bottom or from bottom to top, the first light wave conversion functional layer 201 is a blue first light wave conversion functional layer 201, and the first adhesive film layer 202 is a light-transmitting first adhesive film layer 202. The total thickness of the first light wave conversion functional layer 201 is 25-500 μm; the total thickness of the first adhesive film layer 202 is 25-500 μm.

Under the condition of adopting the above technical scheme, the light-transmitting first glue film layer 202 not only can realize the packaging effect on the first light wave conversion function layer 201 and the cover plate or the first light wave conversion function layer 201 and the battery sheet layer 300, but also can reduce the use of colored materials, thereby reducing the cost of the colored materials. In addition, the first transparent adhesive film layer 202 can not shield the rest layers of the photovoltaic module, so that the adverse effect on the solar energy utilization rate of the photovoltaic module is avoided.

Fig. 1 and 7 illustrate the structural schematic diagrams of a single-glass photovoltaic module and a dual-glass photovoltaic module, respectively, in the case where the first light wave conversion layer 200 includes one first light wave conversion functional layer 201.

Illustratively, as shown in fig. 1, when the first light wave conversion layer 200 includes the first light wave conversion function layer 201, the first light wave conversion function layer 201 is a blue first light wave conversion function layer 201. At this time, the structure of the single-glass photovoltaic module comprises photovoltaic glass 100, a blue first light wave conversion functional layer 201, a cell layer 300, a second light wave conversion layer 400, a light wave reflection layer and a photovoltaic back plate from top to bottom. The thickness of the blue first light-wave conversion functional layer 201 may be 50 μm, the thickness of the blue first light-wave conversion functional layer 201 may be 500 μm, and the thickness of the blue first light-wave conversion functional layer 201 may be 1000 μm. The embodiment of the present invention is not limited thereto.

It should be noted that, when the photovoltaic module is a single-glass photovoltaic module, the photovoltaic backsheet includes a PET substrate layer 502 and a fluorine-containing layer 503, where the fluorine-containing layer 503 may be a fluorine-containing film or only a fluorine-containing coating layer attached to the PET substrate layer 502. The PET substrate layer 502 and the fluorine-containing layer 503 are core components of the back plate in the single-glass photovoltaic module, and are used for realizing the insulating property and the weather resistance of the back plate, so that the safety and the long-term running reliability of the photovoltaic module in outdoor use are improved.

As shown in fig. 7, when the first light wave conversion layer 200 includes the first light wave conversion function layer 201, the first light wave conversion function layer 201 is a blue first light wave conversion function layer 201. At this time, the structure of the dual glass assembly is, from top to bottom, photovoltaic glass 100, blue first light wave conversion functional layer 201, cell layer 300, second light wave conversion layer 400, light wave reflection layer 600 and photovoltaic glass 100. The thickness of the blue first light-wave conversion functional layer 201 may be 50 μm, the thickness of the blue first light-wave conversion functional layer 201 may be 500 μm, and the thickness of the blue first light-wave conversion functional layer 201 may be 1000 μm. The embodiment of the present invention is not limited thereto.

In some embodiments, fig. 2 to 6 and fig. 8 to 16 respectively illustrate the structural schematic diagrams of the single-glass photovoltaic module and the dual-glass photovoltaic module in the case that the first light wave conversion layer 200 includes at least one first light wave conversion functional layer 201 and at least one first glue film layer 202 which are sequentially stacked from top to bottom or from bottom to top.

Fig. 2 to 5 illustrate schematic structural diagrams of the single-glass photovoltaic module in a case where the first light wave conversion layer 200 includes a first light wave conversion functional layer 201 and a first adhesive film layer 202, which are sequentially stacked from top to bottom or from bottom to top.

Referring to fig. 2 to 5, the first light wave conversion layer 200 is a blue first light wave conversion functional layer 201, and the first adhesive film layer 202 is a light-transmitting first adhesive film layer 202. The blue first light-wave conversion functional layer 201 may be located between the photovoltaic glass 100 and the light-transmitting first adhesive film layer 202, and the blue first light-wave conversion functional layer 201 may also be located between the light-transmitting first adhesive film layer 202 and the cell sheet layer 300. At this time, the thickness of the blue first light-wave conversion functional layer 201 may be 25 μm, and the thickness of the light-transmitting first adhesive film layer 202 may be 25 μm; the thickness of the blue first light-wave conversion function layer 201 may be 250 μm, the thickness of the light-transmitting first adhesive film layer 202 may be 250 μm, the thickness of the blue first light-wave conversion function layer 201 may be 500 μm, and the thickness of the light-transmitting first adhesive film layer 202 may be 500 μm. The embodiment of the present invention is not limited thereto.

Fig. 6 illustrates a schematic structural diagram of a single-glass photovoltaic module in the case that the first light wave conversion layer 200 includes a first light wave conversion functional layer 201 and two first adhesive film layers 202 which are stacked.

Referring to fig. 6, the first light wave conversion layer 200 is a blue first light wave conversion functional layer 201, the transparent first glue film layer 202 is two separated transparent first sub-glue film layers, and the blue first light wave conversion functional layer 201 is located between the two transparent first sub-glue film layers. At this time, the thickness of the blue first light-wave conversion functional layer 201 may be 25 μm, and the total thickness of the two light-transmitting first sub-adhesive film layers may be 25 μm; the thickness of the blue first light-wave conversion functional layer 201 can be 250 μm, and the total thickness of the two light-transmitting first sub-adhesive film layers can be 250 μm; the thickness of the blue first light-wave conversion functional layer 201 may be 500 μm, and the total thickness of the two light-transmitting first sub-adhesive film layers may be 500 μm. The embodiment of the present invention is not limited thereto.

Fig. 8 to 15 illustrate the structural schematic diagram of the dual-glass photovoltaic module in the case that the first light wave conversion layer 200 includes a first light wave conversion functional layer 201 and a first adhesive film layer 202, which are sequentially stacked from top to bottom or from bottom to top.

Referring to fig. 8 to 15, the first light wave conversion layer 200 is a blue first light wave conversion functional layer 201, and the first adhesive film layer 202 is a light-transmitting first adhesive film layer 202. The blue first light-wave conversion functional layer 201 may be located between the photovoltaic glass 100 and the light-transmitting first adhesive film layer 202, and the blue first light-wave conversion functional layer 201 may also be located between the light-transmitting first adhesive film layer 202 and the cell sheet layer 300. At this time, the thickness of the blue first light-wave conversion functional layer 201 may be 25 μm, and the thickness of the light-transmitting first adhesive film layer 202 may be 25 μm; the thickness of the blue first light-wave conversion functional layer 201 may be 250 μm, and the thickness of the light-transmitting first adhesive film layer 202 may be 250 μm; the thickness of the blue first light conversion functional layer 201 may be 500 μm, and the thickness of the light transmissive first adhesive film layer 202 may be 500 μm. The embodiment of the present invention is not limited thereto.

Fig. 16 illustrates a schematic structural diagram of the dual-glass photovoltaic module in the case that the first light wave conversion layer 200 includes one first light wave conversion functional layer 201 and two first adhesive film layers 202 which are stacked.

Referring to fig. 16, the first light wave conversion layer 200 is a blue first light wave conversion functional layer 201, the transparent first adhesive film layer 202 is two separated transparent first sub-adhesive film layers, and the blue first light wave conversion functional layer 201 is located between the two transparent first sub-adhesive film layers. At this time, the blue first light-wave conversion functional layer 201 may be 25 μm, and the total thickness of the two light-transmitting first sub-adhesive film layers may be 25 μm; the thickness of the blue first light-wave conversion functional layer 201 can be 250 μm, and the total thickness of the two light-transmitting first sub-adhesive film layers can be 250 μm; the thickness of the blue first light-wave conversion functional layer 201 may be 500 μm, and the total thickness of the two light-transmitting first sub-adhesive film layers may be 500 μm. The embodiment of the present invention is not limited thereto.

In one possible implementation, the second light wave conversion layer 400 includes at least one second light wave conversion functional layer 401. Or, the second light wave conversion layer 400 includes at least one second light wave conversion functional layer 401 and at least one second glue film layer 402, which are sequentially stacked from top to bottom or from bottom to top.

Under the condition of adopting the above technical solution, when the second light wave conversion layer 400 includes at least one second light wave conversion function layer 401, the second light wave conversion function layer 401 not only has the light wave conversion function but also has the encapsulation function, and integrates the two functions, so that the whole second light wave conversion layer 400 can realize the light wave conversion function, and the light wave conversion efficiency can be improved. When the second light wave conversion layer 400 includes at least one second light wave conversion functional layer 401 and at least one second adhesive film layer 402, which are sequentially stacked from top to bottom or from bottom to top, the second light wave conversion functional layer 401 is used to implement a light wave conversion function, and the second adhesive film layer 402 is used to implement a packaging function of the second light wave conversion functional layer 401 and the battery sheet layer 300 or the second light wave conversion functional layer 401 and the light wave reflection layer. So set up, not only can be better match the technology on the photovoltaic module production line for the design is more nimble, can also reduce the cost of coloured material.

In one possible implementation, in case the second light wave conversion layer 400 comprises at least one second light wave conversion functional layer 401, the second light wave conversion functional layer is a yellow second light wave conversion functional layer 401; alternatively, the second light wave conversion function layer 401 is a red second light wave conversion function layer 401. And/or the thickness of the second light wave conversion functional layer 401 is 50-1000 μm. Under the condition that the second light wave conversion layer 400 comprises at least one second light wave conversion functional layer 401 and at least one second glue film layer 402 which are sequentially stacked from top to bottom or from bottom to top, the second light wave conversion functional layer 401 is a yellow second light wave conversion functional layer 401, and the second glue film layer 402 is a light-transmitting second glue film layer 402; or, the second light wave conversion function layer 401 is a red second light wave conversion function layer 401, and the second adhesive film layer 402 is a light-transmitting second adhesive film layer 402. The total thickness of the second light wave conversion functional layer 401 is 25-500 μm; the total thickness of the second adhesive film layer 402 is 25-500 μm.

Under the condition of adopting the above technical scheme, the light-transmitting second glue film layer 402 not only can realize the packaging effect of the second light wave conversion function layer 401 and the battery sheet layer 300 or the second light wave conversion function layer 401 and the light wave reflection layer, but also can reduce the use of colored materials, thereby reducing the cost of the colored materials. In addition, the light-transmitting second adhesive film layer 402 can not shield the rest layers of the photovoltaic module, so that the adverse effect on the solar energy utilization rate of the photovoltaic module is avoided.

Fig. 1 and 7 illustrate the structure of a single-glass photovoltaic module and a dual-glass photovoltaic module, respectively, in the case where the second light wave conversion layer 400 includes one second light wave conversion functional layer 401.

Illustratively, as shown in fig. 1, when the second light wave conversion layer 400 includes the second light wave conversion function layer 401, the second light wave conversion function layer 401 is a yellow second light wave conversion function layer 401, or the second light wave conversion function layer 401 is a red second light wave conversion function layer 401. At this time, the structure of the single-glass photovoltaic module comprises, from top to bottom, photovoltaic glass 100, a blue first light wave conversion functional layer 201, a cell sheet layer 300, a yellow/red second light wave conversion functional layer 401, a light wave reflection layer and a photovoltaic back plate. The thickness of the yellow/red second light-wave conversion functional layer 401 may be 50 μm, the thickness of the yellow/red second light-wave conversion functional layer 401 may also be 500 μm, and the thickness of the yellow/red second light-wave conversion functional layer 401 may also be 1000 μm. The embodiment of the present invention is not limited thereto.

As shown in fig. 7, when the second light wave conversion layer 400 includes the second light wave conversion functional layer 401, the second light wave conversion functional layer 401 is a yellow second light wave conversion functional layer 401, or the second light wave conversion functional layer 401 is a red second light wave conversion functional layer 401. At this time, the structure of the dual glass assembly is, from top to bottom, photovoltaic glass 100, a blue first light wave conversion functional layer 201, a cell layer 300, a yellow/red second light wave conversion functional layer 401, a light wave reflection layer 600 and photovoltaic glass 100. The thickness of the yellow/red second light-wave conversion functional layer 401 may be 50 μm, the thickness of the yellow/red second light-wave conversion functional layer 401 may also be 500 μm, and the thickness of the yellow/red second light-wave conversion functional layer 401 may also be 1000 μm. The embodiment of the present invention is not limited thereto.

In some embodiments, fig. 2 to 6 and fig. 8 to 16 respectively illustrate the structural schematic diagrams of the single-glass photovoltaic module and the dual-glass photovoltaic module in the case that the second light wave conversion layer 400 includes at least one second light wave conversion functional layer 401 and at least one second glue film layer 402, which are sequentially stacked from top to bottom or from bottom to top.

Fig. 2 to 5 illustrate schematic structural diagrams of the single-glass photovoltaic module in a case where the second light wave conversion layer 400 includes a second light wave conversion functional layer 401 and a second glue film layer 402, which are sequentially stacked from top to bottom or from bottom to top.

Referring to fig. 2 to 5, the second light wave conversion layer 400 is a yellow/red second light wave conversion functional layer 401, and the second adhesive film layer 402 is a light-transmitting second adhesive film layer 402. The yellow/red second light wave conversion functional layer 401 may be located between the battery sheet layer 300 and the light-transmitting second adhesive film layer 402, and the yellow/red second light wave conversion functional layer 401 may also be located between the light-transmitting second adhesive film layer 402 and the light wave reflection layer. At this time, the thickness of the yellow/red second light wave conversion functional layer 401 may be 25 μm, and the thickness of the light-transmitting second glue film layer 402 may be 25 μm; the thickness of the yellow/red second light-wave conversion functional layer 401 may be 250 μm, and the thickness of the light-transmitting second adhesive film layer 402 may be 250 μm; the thickness of the yellow/red second light conversion functional layer 401 may be 500 μm, and the thickness of the light-transmitting second adhesive film layer 402 may be 500 μm. The embodiment of the present invention is not limited thereto.

Fig. 6 illustrates a schematic structural diagram of a single-glass photovoltaic module in the case that the second light wave conversion layer 400 includes a second light wave conversion functional layer 401 and two second adhesive film layers 402, which are stacked.

Referring to fig. 6, the second light wave conversion layer 400 is a yellow/red second light wave conversion functional layer 401, the transparent second glue film layer 402 is two separated transparent second sub-glue film layers, and the yellow/red second light wave conversion functional layer 401 is located between the two transparent first sub-glue film layers. At this time, the thickness of the yellow/red second light wave conversion functional layer 401 may be 25 μm, and the total thickness of the two light-transmitting second sub-adhesive film layers may be 25 μm; the thickness of the yellow/red second light-wave conversion functional layer 401 may be 250 μm, and the total thickness of the two light-transmitting second sub-adhesive film layers may be 250 μm; the thickness of the yellow/red second light-wave conversion functional layer 401 may be 500 μm, and the total thickness of the two light-transmitting second sub-adhesive film layers may be 500 μm. The embodiment of the present invention is not limited thereto.

Fig. 8 to 15 illustrate the structural schematic diagram of the dual-glass photovoltaic module in the case that the second light wave conversion layer 400 includes a second light wave conversion functional layer 401 and a second glue film layer 402, which are sequentially stacked from top to bottom or from bottom to top.

Referring to fig. 8 to 15, the second light wave conversion layer 400 is a yellow/red second light wave conversion functional layer 401, and the second adhesive film layer 402 is a light-transmitting second adhesive film layer 402. The yellow/red second light-wave conversion functional layer 401 may be located between the battery sheet layer 300 and the light-transmitting second adhesive film layer 402, and the yellow/red second light-wave conversion functional layer 401 may also be located between the light-transmitting second adhesive film layer 402 and the light-wave reflecting layer 600. At this time, the thickness of the yellow/red second light wave conversion functional layer 401 may be 25 μm, and the thickness of the light-transmitting second glue film layer 402 may be 25 μm; the thickness of the yellow/red second light-wave conversion functional layer 401 may be 250 μm, and the thickness of the light-transmitting second adhesive film layer 402 may be 250 μm; the thickness of the yellow/red second light conversion functional layer 401 may be 500 μm, and the thickness of the light-transmitting second adhesive film layer 402 may be 500 μm. The embodiment of the present invention is not limited thereto.

Fig. 16 illustrates a schematic structural diagram of the dual-glass photovoltaic module in the case that the second light wave conversion layer 400 includes a second light wave conversion functional layer 401 and two second adhesive film layers 402, which are stacked.

Referring to fig. 16, the second light wave conversion layer 400 is a yellow/red second light wave conversion functional layer 401, the transparent second glue film layer 402 is two separated transparent second sub-glue film layers, and the yellow/red second light wave conversion functional layer 401 is located between the two transparent second sub-glue film layers. At this time, the thickness of the yellow/red second light wave conversion functional layer 401 may be 25 μm, and the total thickness of the two light-transmitting second sub-adhesive film layers may be 25 μm; the thickness of the yellow/red second light-wave conversion functional layer 401 may be 250 μm, and the total thickness of the two light-transmitting second sub-adhesive film layers may be 250 μm; the thickness of the yellow/red second light-wave conversion functional layer 401 may be 500 μm, and the total thickness of the two light-transmitting second sub-adhesive film layers may be 500 μm. The embodiment of the present invention is not limited thereto.

In one possible implementation, the photovoltaic module is a single-glass photovoltaic module, and the light wave reflective layer includes a first light wave reflective functional layer 501. Or, the photovoltaic module is a dual-glass photovoltaic module, and the light wave reflection layer 600 includes a second light wave reflection functional layer 601 and at least one third adhesive film layer 602, which are laminated together.

It should be understood that, when the photovoltaic module is a single-glass photovoltaic module, the first light wave reflection functional layer 501 may be an independent adhesive film layer, or may also be a coating layer coated on the photovoltaic back panel, which is not limited in the embodiment of the present invention.

Under the condition of adopting above-mentioned technical scheme, when photovoltaic module is single glass photovoltaic module, first light wave reflection functional layer 501 is used for reflecting the long wave band light that the cell clearance saw through and the long wave band light that passes through second light wave conversion layer 400 conversion back to cell piece layer 300 for this part of long wave band light that is not absorbed by cell piece layer 300 can be absorbed by cell piece layer 300 once more, and then improve the light wave utilization ratio, simultaneously, reflect this part of light that is not absorbed by cell piece layer 300 back to cell piece layer 300, can also avoid this part of light to be absorbed by the backplate or by the roof absorption, make the temperature reduction of photovoltaic module during operation. When the photovoltaic module is a dual-glass photovoltaic module, the second light wave reflection functional layer 601 is used for achieving the above functions, and the third adhesive film layer 602 is used for packaging the second light wave reflection functional layer 601 and the photovoltaic glass 100, or the second light wave reflection functional layer 601 and the second light wave conversion functional layer 401. So set up, not only can be better match the technology on the photovoltaic module production line for the design is more nimble, can also reduce the cost of coloured material.

In one possible implementation, in the case where the light wave reflective layer includes a light wave reflective functional layer, the light wave reflective functional layer is a red light wave reflective functional layer; or the light wave reflection functional layer is a yellow light wave reflection functional layer. Under the condition that the light wave reflection layer 600 comprises a second light wave reflection functional layer 601 and at least one third adhesive film layer 602 which are laminated together, the second light wave reflection functional layer 601 is a red second light wave reflection functional layer 601, and the third adhesive film layer 602 is a light-transmitting third adhesive film layer 602; or, the second light wave reflection function layer 601 is a yellow second light wave reflection function layer 601, and the third adhesive film layer 602 is a light-transmitting third adhesive film layer 602.

Under the condition of adopting the above technical scheme, the light-transmitting third adhesive film layer 602 not only can realize the encapsulation effect on the second light wave reflection functional layer 601 and the photovoltaic glass 100, or on the second light wave reflection functional layer 601 and the second light wave conversion functional layer 401, but also can reduce the use of colored materials, thereby reducing the cost of the colored materials. In addition, the light-transmitting third adhesive film layer 602 does not shield the rest layers of the photovoltaic module, so that the adverse effect on the solar energy utilization rate of the photovoltaic module is avoided.

As shown in fig. 1 to 6, when the photovoltaic module is a single-glass photovoltaic module, the light wave reflective layer includes a first light wave reflective function layer 501. In this case, the first light wave reflection function layer 501 is a red first light wave reflection function layer 501, or the first light wave reflection function layer 501 is a yellow first light wave reflection function layer 501. The thickness of the first light wave reflection function layer 501 may be 5 μm, the thickness of the first light wave reflection function layer 501 may be 250 μm, and the thickness of the first light wave reflection function layer 501 may be 500 μm. The embodiment of the present invention is not limited thereto.

It should be noted that, when the second light-wave conversion function layer 401 is yellow, the color of the light-wave reflection function layer needs to be red. Alternatively, when the second light wave conversion functional layer 401 is red, the color of the light wave reflection functional layer needs to be yellow.

As shown in fig. 7 to 16, when the photovoltaic module is a dual-glass photovoltaic module, the light wave reflection layer 600 includes a second light wave reflection functional layer 601 and at least one third adhesive film layer 602, which are stacked together.

Referring to fig. 7, when the photovoltaic device is a dual-glass photovoltaic device, the light wave reflective layer 600 is a second light wave reflective function layer 601. In this case, the second light wave reflection function layer 601 is a red second light wave reflection function layer 601, or the second light wave reflection function layer 601 is a yellow second light wave reflection function layer 601. The thickness of the second light wave reflection function layer 601 may be 5 μm, the thickness of the second light wave reflection function layer 601 may be 250 μm, and the thickness of the second light wave reflection function layer 601 may be 500 μm. The embodiment of the present invention is not limited thereto.

Referring to fig. 8 to 15, when the photovoltaic device is a dual-glass photovoltaic device, the light wave reflection layer 600 includes a second light wave reflection function layer 601 and a third adhesive film layer 602 stacked together. The second light wave reflection function layer 601 is a red/yellow second light wave reflection function layer 601, and the third adhesive film layer 602 is a light-transmitting third adhesive film layer 602. The red/yellow second light wave reflection functional layer 601 may be located between the second light wave conversion layer 400 and the light-transmitting third adhesive film layer 602, and the red/yellow second light wave reflection functional layer 601 may also be located between the light-transmitting third adhesive film layer 602 and the photovoltaic glass 100. At this time, the thickness of the red/yellow second light wave reflection functional layer 601 may be 2.5 μm, and the thickness of the light-transmitting third adhesive film layer 602 may be 2.5 μm; the thickness of the red/yellow second light wave reflection functional layer 601 may be 125 μm, and the thickness of the light-transmitting third adhesive film layer 602 may be 125 μm; the thickness of the red/yellow second light wave reflection function layer 601 may be 250 μm, and the thickness of the light-transmitting third adhesive film layer 602 may be 250 μm. The embodiment of the present invention is not limited thereto.

Referring to fig. 16, when the photovoltaic module is a dual-glass photovoltaic module, the light wave reflective layer 600 includes a second light wave reflective function layer 601 and two third adhesive film layers 602 stacked together. The second light wave reflection function layer 601 is a red/yellow second light wave reflection function layer 601, the third adhesive film layer 602 is two separated light-transmitting third sub-adhesive film layers, and the red/yellow second light wave reflection function layer 601 is located between the two light-transmitting third sub-adhesive film layers. At this time, the thickness of the red/yellow second light wave reflection functional layer 601 may be 2.5 μm, and the total thickness of the two light-transmitting third sub-adhesive film layers may be 2.5 μm; the thickness of the red/yellow second light wave reflection functional layer 601 may be 125 μm, and the total thickness of the two light-transmitting third sub-adhesive film layers may be 125 μm; the thickness of the red/yellow second light wave reflection function layer 601 may be 250 μm, and the total thickness of the two light-transmitting third sub-adhesive film layers may be 250 μm. The embodiment of the present invention is not limited thereto.

In some embodiments, as shown in fig. 17 to fig. 20, the second light wave conversion layer 400 and the light wave reflection layer 600 may be integrated into a light wave conversion reflection film. At this time, the structure of the photovoltaic module sequentially includes, from top to bottom, a photovoltaic glass 100, a first light wave conversion layer 200, a cell layer 300, a light wave conversion reflective film, and a photovoltaic glass 100.

It should be noted that the third light wave conversion functional layer 701 is a red third light wave conversion functional layer 701, and the third light wave reflection functional layer 702 is a yellow third light wave reflection functional layer 702; alternatively, the third light wave conversion functional layer 701 is a yellow third light wave conversion functional layer 701, and the third light wave reflection functional layer 702 is a red third light wave reflection functional layer 702.

Referring to fig. 17, when the second light wave conversion layer 400 and the light wave reflection layer 600 are combined into one, the light wave conversion reflection film includes a third light wave conversion function layer 701 and a third light wave reflection function layer 702 stacked in sequence from top to bottom. At this time, the thickness of the light wave conversion reflection film may be 55 μm, the thickness of the light wave conversion reflection film may be 750 μm, and the thickness of the light wave conversion reflection film may be 1500 μm.

As shown in fig. 18 to 19, the light wave conversion reflection film may further include a fourth adhesive film layer 703. At this time, the fourth adhesive film layer 703 is a light-transmitting fourth adhesive film layer 703. The light-transmitting fourth adhesive film layer 703 may be located between the cell layer 300 and the light wave conversion reflective film, and the light-transmitting fourth adhesive film layer 703 may also be located between the light wave conversion reflective film and the photovoltaic glass 100. The thickness of the light wave conversion reflection film can be 50 μm, and the thickness of the light-transmitting fourth adhesive film layer 703 can be 5 μm; the thickness of the light wave conversion reflection film can be 500 μm, and the thickness of the light-transmitting fourth adhesive film layer 703 can be 250 μm; the thickness of the light wave conversion reflection film can also be 1000 μm, and the thickness of the light-transmitting fourth adhesive film layer 703 can be 500 μm.

As shown in fig. 20, the fourth adhesive film layer 703 may be a separate two-layer light-transmissive fourth sub-adhesive film layer. At this time, the light wave conversion reflection film is positioned between the two light-transmitting fourth sub-adhesive film layers. The thickness of the light wave conversion reflection film can be 50 micrometers, and the total thickness of the two light-transmitting fourth sub-adhesive film layers can be 5 micrometers; the thickness of the light wave conversion reflection film can be 500 micrometers, and the total thickness of the two light-transmitting fourth sub-adhesive film layers can be 250 micrometers; the thickness of the light wave conversion reflection film can also be 1000 μm, and the total thickness of the two light-transmitting fourth sub-adhesive film layers can be 500 μm.

In practical applications, the first light wave conversion layer 200, the second light wave conversion layer 400 and the light wave reflection layer may be a single-layer structure, a double-layer structure and a three-layer structure, respectively, for more flexible matching with the production process of the photovoltaic module. That is, there may be a case where, when the first light wave conversion layer 200 includes the first light wave conversion function layer 201 and the first glue film layer 202 which are sequentially stacked, the second light wave conversion layer 400 may include the second light wave conversion function layer 401 and the second glue film layer 402, and the light wave reflection layer may include only the light wave reflection function layer. The embodiment of the present invention is not limited thereto.

The embodiment of the utility model also provides a photovoltaic system which comprises the photovoltaic module described in the embodiment.

Compared with the prior art, the beneficial effects of the photovoltaic system provided by the embodiment of the utility model are the same as those of the photovoltaic module provided by the embodiment, and the details are not repeated here.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A photovoltaic module is characterized by comprising a cover plate, a first light wave conversion layer, a battery sheet layer, a second light wave conversion layer, a light wave reflection layer and a back plate which are sequentially stacked from top to bottom;

the first light wave conversion layer is used for packaging the cover plate and the battery sheet layer and converting a long wave band penetrating through the cover plate into a short wave band; the second light wave conversion layer is used for packaging the battery sheet layers and the back plate and converting the short wave bands penetrating between the battery sheets into the long wave bands; the light wave reflection layer is used for reflecting the long wave band from the second light wave conversion layer to the cell sheet layer.

2. The photovoltaic module of claim 1, wherein the first light wave converting layer is a blue first light wave converting layer, the second light wave converting layer is a yellow second light wave converting layer, and the light wave reflecting layer is a red light wave reflecting layer; or the like, or, alternatively,

the first light wave conversion layer is a blue first light wave conversion layer, the second light wave conversion layer is a red second light wave conversion layer, and the light wave reflection layer is a yellow light wave reflection layer.

3. The photovoltaic module of claim 1, wherein the first light wave conversion layer comprises at least one first light wave conversion functional layer; or the like, or, alternatively,

the first light wave conversion layer comprises at least one first light wave conversion functional layer and at least one first adhesive film layer which are sequentially stacked from top to bottom or from bottom to top.

4. The photovoltaic module of claim 3, wherein in the case where the first light wave conversion layer comprises at least one first light wave conversion functional layer, the first light wave conversion functional layer is a blue first light wave conversion functional layer; and/or the thickness of the first light wave conversion function layer is 50-1000 μm;

under the condition that the first light wave conversion layer comprises at least one first light wave conversion functional layer and at least one first adhesive film layer which are sequentially stacked from top to bottom or from bottom to top, the first light wave conversion functional layer is a blue first light wave conversion functional layer, and the first adhesive film layer is a light-transmitting first adhesive film layer; the total thickness of the first light wave conversion functional layer is 25-500 mu m; the total thickness of the first adhesive film layer is 25-500 mu m.

5. The photovoltaic module of claim 1, wherein the second light wave conversion layer comprises at least one second light wave conversion functional layer; or the like, or, alternatively,

the second light wave conversion layer comprises at least one second light wave conversion functional layer and at least one second glue film layer which are sequentially stacked from top to bottom or from bottom to top.

6. The photovoltaic module according to claim 5, wherein in the case that the second light wave conversion layer comprises at least one second light wave conversion functional layer, the second light wave conversion functional layer is a yellow second light wave conversion functional layer; or, the second light wave conversion function layer is a red second light wave conversion function layer; and/or the thickness of the second light wave conversion function layer is 50-1000 μm;

under the condition that the second light wave conversion layer comprises at least one second light wave conversion functional layer and at least one second glue film layer which are sequentially stacked from top to bottom or from bottom to top, the second light wave conversion functional layer is a yellow second light wave conversion functional layer, and the second glue film layer is a light-transmitting second glue film layer; or the like, or, alternatively,

the second light wave conversion function layer is a red second light wave conversion function layer, and the second adhesive film layer is a light-transmitting second adhesive film layer;

the total thickness of the second light wave conversion functional layer is 25-500 mu m; the total thickness of the second adhesive film layer is 25-500 mu m.

7. The photovoltaic module of claim 1, wherein the thickness of the light wave reflecting layer is 5-500 μm.

8. The photovoltaic module of claim 1, wherein the photovoltaic module is a single glass photovoltaic module, the light wave reflective layer comprising a light wave reflective functional layer; or the like, or, alternatively,

the photovoltaic module is a double-glass photovoltaic module, and the light wave reflection layer comprises a light wave reflection functional layer and at least one third adhesive film layer which are laminated together.

9. The photovoltaic module of claim 8, wherein in the case where the lightwave reflective layer includes the lightwave reflective functional layer, the lightwave reflective functional layer is a red lightwave reflective functional layer; or, the light wave reflection functional layer is a yellow light wave reflection functional layer;

under the condition that the light wave reflection layer comprises a light wave reflection functional layer and at least one third adhesive film layer which are laminated together, the light wave reflection functional layer is a red light wave reflection functional layer, and the third adhesive film layer is a light-transmitting third adhesive film layer; or the like, or, alternatively,

the light wave reflection functional layer is a yellow light wave reflection functional layer, and the third adhesive film layer is a light-transmitting third adhesive film layer.

10. A photovoltaic system comprising a photovoltaic module according to any one of claims 1 to 9.