CN115799374B - Color photovoltaic assembly with obvious color development at night and application thereof - Google Patents
Color photovoltaic assembly with obvious color development at night and application thereof Download PDFInfo
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- CN115799374B CN115799374B CN202211370794.1A CN202211370794A CN115799374B CN 115799374 B CN115799374 B CN 115799374B CN 202211370794 A CN202211370794 A CN 202211370794A CN 115799374 B CN115799374 B CN 115799374B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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Abstract
The application relates to a color photovoltaic module with obvious color development at night, which comprises a photovoltaic cell panel and a color layer arranged on the photovoltaic cell panel, wherein the photovoltaic cell panel comprises a cell panel frame, a back plate, a photovoltaic cell and a transparent front plate which are sequentially laminated in the cell panel frame, two sides of the photovoltaic cell are respectively provided with adhesive films which are respectively adhered with the back plate and the transparent front plate through the adhesive films, and a junction box electrically connected with the photovoltaic cell is arranged on the back plate; the color layer comprises a transparent light guide plate arranged on the transparent front plate and a pigment layer arranged on one surface of the transparent light guide plate far away from the photovoltaic cell panel, and the pigment layer comprises a dark color block and a light color block; a plurality of grooves are formed in the surface, far away from the photovoltaic cell panel, of the transparent light guide plate, corresponding to the area of the dark color block; the side of the transparent light guide plate is provided with a light source. The application has more obvious color development at night and can weaken the hot spot effect in daytime.
Description
Technical Field
The application relates to the field of photovoltaics, in particular to a color photovoltaic module with obvious color development at night, and a preparation method and application thereof.
Background
Along with the development of the photovoltaic industry, the increasing reduction of the cost of the photovoltaic panel and the increasing maturation of the combination mode of the photovoltaic technology and the city, the photovoltaic panel starts to show the trend of large-scale application in city construction. One aspect of photovoltaic panels that is important for application in urban construction is application to the exterior of buildings. Because the photovoltaic cell panel is mainly black or blue, when the photovoltaic cell panel is paved outside a building, the beauty of the building can be influenced. In order to increase the aesthetic feeling of the photovoltaic cell panel, the photovoltaic cell panel is colored by pigment to form a pattern when the photovoltaic cell panel is paved outside a building. The power generation of the photovoltaic cell panel can be reduced to a certain extent, but the aesthetic degree of the photovoltaic cell panel can be greatly improved.
In order to see the patterns on the photovoltaic cell panel at night, a transparent light-guiding plate is often added on the photovoltaic panel, and a light source is arranged at the edge of the plate to enable the plate to irradiate the surface of the photovoltaic cell panel after light is guided at night, so that the patterns on the surface of the photovoltaic cell panel are visible. The patterns are generally provided with dark color blocks and light color blocks, and the dark color blocks are not obvious in color development at night due to the low overall brightness; and under the daytime sunlight irradiation, the visible light transmittance of the dark color block is lower, and the hot spot effect is easy to cause.
Disclosure of Invention
The embodiment of the application provides a photovoltaic module with obvious night color development and a preparation method thereof, which aim to solve the technical problems that dark color blocks are not obvious in night color development and hot spot effect is generated in daytime.
In a first aspect, the embodiment of the application provides a color photovoltaic module with obvious night color development, which comprises a photovoltaic cell panel and a color layer arranged on the photovoltaic cell panel,
the photovoltaic cell panel comprises a panel frame, a backboard, a photovoltaic cell and a transparent front plate, wherein the backboard, the photovoltaic cell and the transparent front plate are sequentially arranged in the panel frame in a laminated mode, adhesive films are arranged on two sides of the photovoltaic cell and are respectively adhered to the backboard and the transparent front plate through the adhesive films, and a junction box electrically connected with the photovoltaic cell is arranged on the backboard;
the color layer comprises a transparent light guide plate arranged on the transparent front plate and a pigment layer arranged on one surface of the transparent light guide plate far away from the photovoltaic cell panel, and the pigment layer comprises a dark color block and a light color block;
a plurality of grooves are formed in the surface, far away from the photovoltaic cell panel, of the transparent light guide plate, and the surface is opposite to the region of the dark color block;
The side of the transparent light guide plate is provided with a light source.
In some embodiments of the application, the width of the groove is 0.01-0.05mm.
In some embodiments of the application, the depth of the grooves is 0.1-0.15mm.
In some embodiments of the present application, the grooves include first grooves arranged in parallel at equal intervals along a first direction and second grooves arranged in parallel at equal intervals along a second direction, the first direction and the second direction having a predetermined angle therebetween.
In some embodiments of the application, the predetermined angle is 90 °.
In some embodiments of the application, the spacing between the first grooves is 0.1-0.3mm; and/or the number of the groups of groups,
the spacing between the second grooves is 0.1-0.3mm.
In some embodiments of the application, dots are provided at the edges of the light guide plate.
In a second aspect, an embodiment of the present application provides a building, where the building is provided with a color photovoltaic module with obvious night color development according to any one of the embodiments of the first aspect.
In a third aspect, an embodiment of the present application provides an urban public facility, where the urban public facility is provided with the color photovoltaic module with obvious night color development in any embodiment of the first aspect.
In a fourth aspect, an embodiment of the present application provides a personal electricity consumption or electricity storage facility, where the personal electricity consumption or electricity storage facility is provided with the color photovoltaic module with obvious night color development in any embodiment of the first aspect.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
according to the application, the plurality of grooves are formed in the transparent light guide plate relative to the areas of the dark color blocks, and light incident from the side parts of the transparent light guide plate can be reflected between the grooves for multiple times at night, so that the light distribution is more concentrated in the areas where the dark color blocks are positioned, and the brightness of the dark color blocks is increased, so that the color development of the dark color blocks is more obvious; during daytime, sunlight obliquely irradiates the photovoltaic cell panel under most conditions, and the sunlight obliquely enters the grooves and then is reflected in the grooves for multiple times, so that the sunlight is easier to enter the light guide plate and further enters the photovoltaic cell panel, the sunlight incidence quantity of the area where the dark color block is located is increased, and the hot spot effect is weakened.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram showing the distribution structure of dark color patches and light color patches in embodiment 1 of the present application;
FIG. 2 is a schematic diagram showing the distribution structure of grooves on a light guide plate according to embodiment 1 of the present application;
fig. 3 is a schematic view of the optical path of light incident from the side of the transparent light guide plate, which is reflected between the grooves 3 for multiple times;
fig. 4 is a schematic view of an optical path of sunlight reflected in the grooves for multiple times after being obliquely incident on the grooves.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Unless specifically stated otherwise, the terms used herein should be understood as meaning as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In case of conflict, the present specification will control.
Unless otherwise specifically indicated, the various raw materials, reagents, instruments, equipment and the like used in the present application are commercially available or may be prepared by existing methods.
The existing photovoltaic module has the technical problems that visible light irradiated on a photovoltaic cell panel and covered with a low-light-transmittance pigment part is less, and a hot spot effect is generated.
The technical scheme provided by the embodiment of the application aims to solve the technical problems, and the overall thought is as follows:
in a first aspect, the embodiment of the application provides a color photovoltaic module with obvious night color development, which comprises a photovoltaic cell panel and a color layer arranged on the photovoltaic cell panel,
the photovoltaic cell panel comprises a panel frame, a backboard, a photovoltaic cell and a transparent front plate, wherein the backboard, the photovoltaic cell and the transparent front plate are sequentially arranged in the panel frame in a laminated mode, adhesive films are arranged on two sides of the photovoltaic cell and are respectively adhered to the backboard and the transparent front plate through the adhesive films, and a junction box electrically connected with the photovoltaic cell is arranged on the backboard;
The color layer comprises a transparent light guide plate arranged on the transparent front plate and a pigment layer arranged on one surface of the transparent light guide plate far away from the photovoltaic cell panel, and the pigment layer comprises a dark color block and a light color block;
a plurality of grooves are formed in the surface, far away from the photovoltaic cell panel, of the transparent light guide plate, and the surface is opposite to the region of the dark color block;
the side of the transparent light guide plate is provided with a light source.
Those skilled in the art will appreciate that the panel frame is used to secure other panel-like members of the photovoltaic panel, including back sheets, photovoltaic cells, transparent front sheets. The material of the panel frame may be a conventional material in the art, such as a polymer material and a metal material.
Those skilled in the art will appreciate that the back sheet is a commercial product in the art. The back plate is mainly used for protecting the photovoltaic cell and providing support for the photovoltaic cell.
It will be appreciated by those skilled in the art that transparent front plates are commercially available in the art, and that transparent front plates commonly used in the art are made of ultra-white glass. Transparent polymers can also be selected as the material of the transparent front plate.
As will be appreciated by those skilled in the art, the junction box is used to output photocurrent generated by the photovoltaic cell.
As will be appreciated by those skilled in the art, the transparent light guide plate may be made of a material having high transparency, such as glass or organic glass.
It will be appreciated by those skilled in the art that the pigment layer is made of pigment, and the pigment may be a common pigment. As a preferred embodiment, the pigment is a UV curable ink. The UV light curing ink has the characteristics of strong adhesion, smooth surface, quick curing film formation, simple use and the like. The UV light curable ink may be printed on the transparent light guide plate by UV printing, screen printing, or the like.
As will be appreciated by those skilled in the art, since the photovoltaic panel itself is black or dark blue in color, the pigment layer generally includes a white pigment layer and a color pigment layer disposed on the white pigment layer, and in the present application, the dark color block is formed of a dark pigment in the color pigment layer, and the light color is formed of a light pigment in the color pigment layer.
Those skilled in the art will understand that the light source may be a conventional light source, and in practical application, an LED lamp is generally selected. The light source may be arranged outside the transparent light guide plate, for example, the LED lamp is tightly attached to the side of the transparent light guide plate, and an outer frame is further arranged to fix the LED lamp and the transparent light guide plate; the inside of the transparent light guide plate can be provided, for example, a groove is etched on the side edge of the transparent light guide plate by laser, and then the LED lamp is embedded into the groove.
Those skilled in the art will appreciate that there are a variety of well known ways to form the grooves in the plate member, and in the present application, as a preferred embodiment, the grooves are formed by laser etching.
Referring to fig. 3, during the night, light incident from the side of the transparent light guide plate is reflected between the grooves 3 for multiple times, so that the light distribution is more concentrated in the area where the dark color block is located, and the brightness of the dark color block is increased, thereby making the color development of the dark color block more obvious;
referring to fig. 4, during daytime, sunlight irradiates the photovoltaic panel obliquely in most cases, and when no grooves exist, the sunlight directly obliquely irradiates the transparent light guide plate, wherein a considerable part of the sunlight is reflected; when the grooves exist, sunlight can be reflected in the grooves for multiple times after entering the grooves obliquely, reflection and refraction can be simultaneously carried out on the walls of the grooves, and the refraction part is equivalent to successful incidence to the transparent light guide plate. Since sunlight is reflected in the grooves for multiple times, each reflection is accompanied by refraction, most sunlight can finally enter the transparent light guide plate in a refraction mode.
The above light path principle is only used as an illustration of a part of the principles of the present application, in practical situations, the groove wall and the groove bottom cannot be plane, and the light path is more complex, but is beneficial to increase the incidence of light as a whole.
According to the application, the plurality of grooves are formed in the transparent light guide plate relative to the areas of the dark color blocks, and light incident from the side parts of the transparent light guide plate can be reflected between the grooves for multiple times at night, so that the light distribution is more concentrated in the areas where the dark color blocks are positioned, and the brightness of the dark color blocks is increased, so that the color development of the dark color blocks is more obvious; during daytime, sunlight obliquely irradiates the photovoltaic cell panel under most conditions, and the sunlight obliquely enters the grooves and then is reflected in the grooves for multiple times, so that the sunlight is easier to enter the light guide plate and further enters the photovoltaic cell panel, the sunlight incidence quantity of the area where the dark color block is located is increased, and the hot spot effect is weakened.
In some embodiments of the application, the width of the groove is 0.01-0.05mm.
It can be understood by those skilled in the art that when the grooves are narrow, the pigment is not easy to penetrate into the grooves, and sunlight is directly reflected on the surface of the transparent light guide plate for multiple times after entering the grooves obliquely. If the pigment penetrates into the grooves, it covers the surfaces of the grooves and absorbs a large amount of sunlight, resulting in a reduction in sunlight incident from the grooves into the transparent light guide plate.
In some embodiments of the application, the depth of the grooves is 0.1-0.15mm.
As can be appreciated by those skilled in the art, when the depth of the groove is deepened, the light incident from the side of the transparent light guide plate is more significantly concentrated in the area where the dark color block is located, and the sunlight incident obliquely is subjected to more reflections, so that the sunlight incidence amount in the area where the dark color block is located is increased, that is, the beneficial effects described above tend to be enhanced as the depth of the groove is increased; however, after the depth of the groove is increased to a certain extent, the enhancement of the beneficial effect becomes no longer remarkable, and the processing difficulty becomes larger continuously along with the deepening of the depth of the groove, so that the value of the depth of the groove is more convenient.
In some embodiments of the present application, the grooves include first grooves arranged in parallel at equal intervals along a first direction and second grooves arranged in parallel at equal intervals along a second direction, the first direction and the second direction having a predetermined angle therebetween.
It will be appreciated by those skilled in the art that the equally spaced parallel arrangement between the first grooves and the equally spaced parallel arrangement between the second grooves allows the grooves to form a uniform grid.
In some embodiments of the application, the predetermined angle is 90 °.
In some embodiments of the application, the spacing between the first grooves is 0.1-0.3mm; and/or the number of the groups of groups,
The spacing between the second grooves is 0.1-0.3mm.
It can be understood by those skilled in the art that the smaller the distance between the grooves, the higher the concentration degree of the light incident on the side of the transparent light guide plate in the region where the dark color block is located and the more sunlight incident on the region where the dark color block is located, but on one hand, the too high brightness of the dark color block will affect the overall aesthetic degree, and on the other hand, the denser the grooves, the higher the processing cost will be, so that the distance between the grooves is more convenient to use the above values.
In some embodiments of the application, dots are provided at the edges of the light guide plate.
Those skilled in the art will appreciate that the dots are conventional structures of light guide plates, and the light emitted from the light source is concentrated, so that the concentrated light can be refracted at the dots more times by the dots to be more uniform.
In a second aspect, an embodiment of the present application provides a building, where the building is provided with a color photovoltaic module with obvious night color development according to any one of the embodiments of the first aspect. The building may be any form of building including, but not limited to, a building, bridge, greening facility, factory building, etc. The building is implemented based on the embodiment of the first aspect, and the specific implementation manner of the building can refer to the embodiment of the first aspect, and since the building adopts part or all of the technical solutions of the foregoing embodiments, at least all of the beneficial effects brought by the technical solutions of the foregoing embodiments are not described in detail herein.
In a third aspect, an embodiment of the present application provides an urban public facility, where the urban public facility is provided with the color photovoltaic module with obvious night color development in any embodiment of the first aspect. The urban public facility may be any form of urban public facility including, but not limited to, billboards, buses, bus stop boards, street lamps, and the like. The urban public facility is implemented based on the embodiment of the first aspect, and the specific implementation manner of the urban public facility can refer to the embodiment of the first aspect, and since the urban public facility adopts part or all of the technical solutions of the foregoing embodiments, at least all of the beneficial effects brought by the technical solutions of the foregoing embodiments are not described herein in detail.
In a fourth aspect, an embodiment of the present application provides a personal electricity consumption or electricity storage facility, where the personal electricity consumption or electricity storage facility is provided with the color photovoltaic module with obvious night color development in any embodiment of the first aspect. The personal or electricity storage facility may be any capable of storing or using electricity in any form, including but not limited to a charger, a battery, an electric or hybrid car, an unmanned aerial vehicle, a cell phone, a computer, etc. The personal electricity or electricity storage facility is implemented based on the embodiment of the first aspect, and the specific implementation manner of the personal electricity or electricity storage facility can refer to the embodiment of the first aspect, and since the personal electricity or electricity storage facility adopts part or all of the technical solutions of the embodiments, at least the personal electricity or electricity storage facility has all the beneficial effects brought by the technical solutions of the embodiments, which are not repeated herein.
The application will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. The experimental procedures, which are not specified in the following examples, are generally determined according to national standards. If the corresponding national standard does not exist, the method is carried out according to the general international standard, the conventional condition or the condition recommended by the manufacturer.
Example 1
The embodiment provides a color photovoltaic module with obvious night color development, which comprises:
a photovoltaic cell panel with the length of 120cm and the width of 60cm, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 model photovoltaic cell panel manufactured by Dragon-edge energy science and technology (Hangzhou) Co., ltd; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a stacked manner are embedded in the aluminum alloy frame;
the rectangular light guide plate is 5mm thick and covers the ultra-white glass front plate, the shape and the size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the light guide plate is 120cm long and 60cm wide), the light guide plate is adhered to the aluminum alloy frame through EVA adhesive, the light guide plate is made of glass, grooves are etched on the side edges of the light guide plate through laser, the distance between every two adjacent grooves is 6cm, the distance between corner points of four corners of the light guide plate and the nearest groove is 6cm, 19 grooves are formed on the long side of the light guide plate, and 9 grooves are formed on the short side of the light guide plate;
The white light LED lamps are filled in all the grooves, the notch of each groove is sealed by EVA hot melt adhesive, and the white light LED lamps are connected with an external power supply through the sealing formed by the hot melt adhesive;
the edge of the light guide plate is provided with a dot area with the width of 10cm, white dots are printed on the dot area, the white dots are round with the diameter of 2mm, one part of the white dots are arranged in a square array with the side length of 4mm, and the other part of the white dots are filled in the center point of the square in the square array, that is, the other part of the white dots also form a square array with the side length of 4 mm;
the light guide plate is covered with a white pigment layer with the thickness of 10 μm, referring to fig. 1, the white pigment layer is covered with dark color blocks and light color blocks, wherein the dark color blocks and the light color blocks are rectangular with the length of 10cm and the width of 10cm, each dark color block is arranged adjacent to the light color block, the material of the dark color block is purple ink, and the material of the light color block is yellow ink; the thickness of the dark color block and the light color block is 10 mu m;
referring to fig. 2, the surface of the light guide plate is provided with grooves in the area where the dark color blocks exist, the grooves are formed by laser etching, the grooves are enclosed into a plurality of congruent squares, and the grooves and the long sides of the light guide plate form 45-degree included angles;
The width of the grooves is 0.01mm, the depth is 0.1mm, and the adjacent distance between the parallel grooves is 0.1mm;
it should be noted that the structure in fig. 2 is only used as an illustration, and the density of the grooves in fig. 2 is different from the actual density of the present embodiment.
Example 2
This embodiment differs from embodiment 1 only in that the depth of the groove is 0.13mm. The method comprises the following steps:
the embodiment provides a color photovoltaic module with obvious night color development, which comprises:
a photovoltaic cell panel with the length of 120cm and the width of 60cm, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 model photovoltaic cell panel manufactured by Dragon-edge energy science and technology (Hangzhou) Co., ltd; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a stacked manner are embedded in the aluminum alloy frame;
the rectangular light guide plate is 5mm thick and covers the ultra-white glass front plate, the shape and the size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the light guide plate is 120cm long and 60cm wide), the light guide plate is adhered to the aluminum alloy frame through EVA adhesive, the light guide plate is made of glass, grooves are etched on the side edges of the light guide plate through laser, the distance between every two adjacent grooves is 6cm, the distance between corner points of four corners of the light guide plate and the nearest groove is 6cm, 19 grooves are formed on the long side of the light guide plate, and 9 grooves are formed on the short side of the light guide plate;
The white light LED lamps are filled in all the grooves, the notch of each groove is sealed by EVA hot melt adhesive, and the white light LED lamps are connected with an external power supply through the sealing formed by the hot melt adhesive;
the edge of the light guide plate is provided with a dot area with the width of 10cm, white dots are printed on the dot area, the white dots are round with the diameter of 2mm, one part of the white dots are arranged in a square array with the side length of 4mm, and the other part of the white dots are filled in the center point of the square in the square array, that is, the other part of the white dots also form a square array with the side length of 4 mm;
the light guide plate is covered with a layer of white pigment layer with the thickness of 10 mu m, the white pigment layer is covered with dark color blocks and light color blocks, wherein the dark color blocks and the light color blocks are rectangular with the length of 10cm and the width of 10cm, each dark color block is arranged adjacent to each light color block, the dark color blocks are made of purple ink, and the light color blocks are made of yellow ink; the thickness of the dark color block and the light color block is 10 mu m;
grooves are formed in the areas where the dark color blocks exist on the surface of the light guide plate, the grooves are formed by laser etching, the grooves are enclosed into a plurality of congruent squares, and an included angle of 45 degrees is formed between the grooves and the long sides of the light guide plate;
The width of the grooves was 0.01mm, the depth was 0.3mm, and the adjacent distance between the parallel grooves was 0.1mm.
Example 3
This embodiment differs from embodiment 1 only in that the depth of the groove is 0.15mm. The method comprises the following steps:
the embodiment provides a color photovoltaic module with obvious night color development, which comprises:
a photovoltaic cell panel with the length of 120cm and the width of 60cm, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 model photovoltaic cell panel manufactured by Dragon-edge energy science and technology (Hangzhou) Co., ltd; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a stacked manner are embedded in the aluminum alloy frame;
the rectangular light guide plate is 5mm thick and covers the ultra-white glass front plate, the shape and the size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the light guide plate is 120cm long and 60cm wide), the light guide plate is adhered to the aluminum alloy frame through EVA adhesive, the light guide plate is made of glass, grooves are etched on the side edges of the light guide plate through laser, the distance between every two adjacent grooves is 6cm, the distance between corner points of four corners of the light guide plate and the nearest groove is 6cm, 19 grooves are formed on the long side of the light guide plate, and 9 grooves are formed on the short side of the light guide plate;
The white light LED lamps are filled in all the grooves, the notch of each groove is sealed by EVA hot melt adhesive, and the white light LED lamps are connected with an external power supply through the sealing formed by the hot melt adhesive;
the edge of the light guide plate is provided with a dot area with the width of 10cm, white dots are printed on the dot area, the white dots are round with the diameter of 2mm, one part of the white dots are arranged in a square array with the side length of 4mm, and the other part of the white dots are filled in the center point of the square in the square array, that is, the other part of the white dots also form a square array with the side length of 4 mm;
the light guide plate is covered with a layer of white pigment layer with the thickness of 10 mu m, the white pigment layer is covered with dark color blocks and light color blocks, wherein the dark color blocks and the light color blocks are rectangular with the length of 10cm and the width of 10cm, each dark color block is arranged adjacent to each light color block, the dark color blocks are made of purple ink, and the light color blocks are made of yellow ink; the thickness of the dark color block and the light color block is 10 mu m;
grooves are formed in the areas where the dark color blocks exist on the surface of the light guide plate, the grooves are formed by laser etching, the grooves are enclosed into a plurality of congruent squares, and an included angle of 45 degrees is formed between the grooves and the long sides of the light guide plate;
The width of the grooves was 0.01mm, the depth was 0.15mm, and the adjacent distance between the parallel grooves was 0.1mm.
Example 4
This embodiment differs from embodiment 1 only in that the width of the groove is 0.05mm. The method comprises the following steps:
the embodiment provides a color photovoltaic module with obvious night color development, which comprises:
a photovoltaic cell panel with the length of 120cm and the width of 60cm, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 model photovoltaic cell panel manufactured by Dragon-edge energy science and technology (Hangzhou) Co., ltd; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a stacked manner are embedded in the aluminum alloy frame;
the rectangular light guide plate is 5mm thick and covers the ultra-white glass front plate, the shape and the size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the light guide plate is 120cm long and 60cm wide), the light guide plate is adhered to the aluminum alloy frame through EVA adhesive, the light guide plate is made of glass, grooves are etched on the side edges of the light guide plate through laser, the distance between every two adjacent grooves is 6cm, the distance between corner points of four corners of the light guide plate and the nearest groove is 6cm, 19 grooves are formed on the long side of the light guide plate, and 9 grooves are formed on the short side of the light guide plate;
The white light LED lamps are filled in all the grooves, the notch of each groove is sealed by EVA hot melt adhesive, and the white light LED lamps are connected with an external power supply through the sealing formed by the hot melt adhesive;
the edge of the light guide plate is provided with a dot area with the width of 10cm, white dots are printed on the dot area, the white dots are round with the diameter of 2mm, one part of the white dots are arranged in a square array with the side length of 4mm, and the other part of the white dots are filled in the center point of the square in the square array, that is, the other part of the white dots also form a square array with the side length of 4 mm;
the light guide plate is covered with a layer of white pigment layer with the thickness of 10 mu m, the white pigment layer is covered with dark color blocks and light color blocks, wherein the dark color blocks and the light color blocks are rectangular with the length of 10cm and the width of 10cm, each dark color block is arranged adjacent to each light color block, the dark color blocks are made of purple ink, and the light color blocks are made of yellow ink; the thickness of the dark color block and the light color block is 10 mu m;
grooves are formed in the areas where the dark color blocks exist on the surface of the light guide plate, the grooves are formed by laser etching, the grooves are enclosed into a plurality of congruent squares, and an included angle of 45 degrees is formed between the grooves and the long sides of the light guide plate;
The width of the grooves was 0.05mm, the depth was 0.1mm, and the adjacent distance between the parallel grooves was 0.1mm.
Example 5
This embodiment differs from embodiment 1 only in that the adjacent distance between the mutually parallel grooves is 0.3mm. The method comprises the following steps:
the embodiment provides a color photovoltaic module with obvious night color development, which comprises:
a photovoltaic cell panel with the length of 120cm and the width of 60cm, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 model photovoltaic cell panel manufactured by Dragon-edge energy science and technology (Hangzhou) Co., ltd; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a stacked manner are embedded in the aluminum alloy frame;
the rectangular light guide plate is 5mm thick and covers the ultra-white glass front plate, the shape and the size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the light guide plate is 120cm long and 60cm wide), the light guide plate is adhered to the aluminum alloy frame through EVA adhesive, the light guide plate is made of glass, grooves are etched on the side edges of the light guide plate through laser, the distance between every two adjacent grooves is 6cm, the distance between corner points of four corners of the light guide plate and the nearest groove is 6cm, 19 grooves are formed on the long side of the light guide plate, and 9 grooves are formed on the short side of the light guide plate;
The white light LED lamps are filled in all the grooves, the notch of each groove is sealed by EVA hot melt adhesive, and the white light LED lamps are connected with an external power supply through the sealing formed by the hot melt adhesive;
the edge of the light guide plate is provided with a dot area with the width of 10cm, white dots are printed on the dot area, the white dots are round with the diameter of 2mm, one part of the white dots are arranged in a square array with the side length of 4mm, and the other part of the white dots are filled in the center point of the square in the square array, that is, the other part of the white dots also form a square array with the side length of 4 mm;
the light guide plate is covered with a white pigment layer with the thickness of 10 mu m, the white pigment layer is covered with a dark color block 1 and a light color block 2, wherein the dark color block 1 and the light color block 2 are rectangular with the length of 10cm and the width of 10cm, each dark color block 1 is arranged adjacent to the light color block 2, the material of the dark color block 1 is purple ink, and the material of the light color block 2 is yellow ink; the thickness of the dark color block 1 and the light color block 2 is 10 mu m;
the surface of the light guide plate is provided with grooves 3 in the area where the dark color blocks exist, the grooves 3 are formed by laser etching, the grooves 3 are enclosed into a plurality of congruent squares, and the grooves 3 and the long sides of the light guide plate form 45-degree included angles;
The width of the grooves 3 was 0.01mm, the depth was 0.1mm, and the adjacent distance between the grooves 3 parallel to each other was 0.3mm.
Comparative example 1
This comparative example differs from example 1 only in that: the light guide plate is not provided with a groove. The method comprises the following steps:
this comparative example provides a color photovoltaic module with obvious color development at night, comprising:
a photovoltaic cell panel with the length of 120cm and the width of 60cm, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 model photovoltaic cell panel manufactured by Dragon-edge energy science and technology (Hangzhou) Co., ltd; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a stacked manner are embedded in the aluminum alloy frame;
the rectangular light guide plate is 5mm thick and covers the ultra-white glass front plate, the shape and the size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the light guide plate is 120cm long and 60cm wide), the light guide plate is adhered to the aluminum alloy frame through EVA adhesive, the light guide plate is made of glass, grooves are etched on the side edges of the light guide plate through laser, the distance between every two adjacent grooves is 6cm, the distance between corner points of four corners of the light guide plate and the nearest groove is 6cm, 19 grooves are formed on the long side of the light guide plate, and 9 grooves are formed on the short side of the light guide plate;
The white light LED lamps are filled in all the grooves, the notch of each groove is sealed by EVA hot melt adhesive, and the white light LED lamps are connected with an external power supply through the sealing formed by the hot melt adhesive;
the edge of the light guide plate is provided with a dot area with the width of 10cm, white dots are printed on the dot area, the white dots are round with the diameter of 2mm, one part of the white dots are arranged in a square array with the side length of 4mm, and the other part of the white dots are filled in the center point of the square in the square array, that is, the other part of the white dots also form a square array with the side length of 4 mm;
the light guide plate is covered with a layer of white pigment layer with the thickness of 10 mu m, the white pigment layer is covered with dark color blocks and light color blocks, wherein the dark color blocks and the light color blocks are rectangular with the length of 10cm and the width of 10cm, each dark color block is arranged adjacent to each light color block, the dark color blocks are made of purple ink, and the light color blocks are made of yellow ink; the thickness of both dark and light color patches was 10 μm.
Comparative example 2
The present comparative example differs from example 1 only in that the depth of the groove is 0.17mm. The method comprises the following steps:
the embodiment provides a color photovoltaic module with obvious night color development, which comprises:
A photovoltaic cell panel with the length of 120cm and the width of 60cm, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 model photovoltaic cell panel manufactured by Dragon-edge energy science and technology (Hangzhou) Co., ltd; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a stacked manner are embedded in the aluminum alloy frame;
the rectangular light guide plate is 5mm thick and covers the ultra-white glass front plate, the shape and the size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the light guide plate is 120cm long and 60cm wide), the light guide plate is adhered to the aluminum alloy frame through EVA adhesive, the light guide plate is made of glass, grooves are etched on the side edges of the light guide plate through laser, the distance between every two adjacent grooves is 6cm, the distance between corner points of four corners of the light guide plate and the nearest groove is 6cm, 19 grooves are formed on the long side of the light guide plate, and 9 grooves are formed on the short side of the light guide plate;
the white light LED lamps are filled in all the grooves, the notch of each groove is sealed by EVA hot melt adhesive, and the white light LED lamps are connected with an external power supply through the sealing formed by the hot melt adhesive;
the edge of the light guide plate is provided with a dot area with the width of 10cm, white dots are printed on the dot area, the white dots are round with the diameter of 2mm, one part of the white dots are arranged in a square array with the side length of 4mm, and the other part of the white dots are filled in the center point of the square in the square array, that is, the other part of the white dots also form a square array with the side length of 4 mm;
The light guide plate is covered with a layer of white pigment layer with the thickness of 10 mu m, the white pigment layer is covered with dark color blocks and light color blocks, wherein the dark color blocks and the light color blocks are rectangular with the length of 10cm and the width of 10cm, each dark color block is arranged adjacent to each light color block, the dark color blocks are made of purple ink, and the light color blocks are made of yellow ink; the thickness of the dark color block and the light color block is 10 mu m;
grooves are formed in the areas where the dark color blocks exist on the surface of the light guide plate, the grooves are formed by laser etching, the grooves are enclosed into a plurality of congruent squares, and an included angle of 45 degrees is formed between the grooves and the long sides of the light guide plate;
the width of the grooves was 0.01mm, the depth was 0.17mm, and the adjacent distance between the parallel grooves was 0.1mm.
Comparative example 3
The present comparative example differs from example 1 only in that the depth of the groove was 0.07mm. The method comprises the following steps:
the embodiment provides a color photovoltaic module with obvious night color development, which comprises:
a photovoltaic cell panel with the length of 120cm and the width of 60cm, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 model photovoltaic cell panel manufactured by Dragon-edge energy science and technology (Hangzhou) Co., ltd; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a stacked manner are embedded in the aluminum alloy frame;
The rectangular light guide plate is 5mm thick and covers the ultra-white glass front plate, the shape and the size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the light guide plate is 120cm long and 60cm wide), the light guide plate is adhered to the aluminum alloy frame through EVA adhesive, the light guide plate is made of glass, grooves are etched on the side edges of the light guide plate through laser, the distance between every two adjacent grooves is 6cm, the distance between corner points of four corners of the light guide plate and the nearest groove is 6cm, 19 grooves are formed on the long side of the light guide plate, and 9 grooves are formed on the short side of the light guide plate;
the white light LED lamps are filled in all the grooves, the notch of each groove is sealed by EVA hot melt adhesive, and the white light LED lamps are connected with an external power supply through the sealing formed by the hot melt adhesive;
the edge of the light guide plate is provided with a dot area with the width of 10cm, white dots are printed on the dot area, the white dots are round with the diameter of 2mm, one part of the white dots are arranged in a square array with the side length of 4mm, and the other part of the white dots are filled in the center point of the square in the square array, that is, the other part of the white dots also form a square array with the side length of 4 mm;
The light guide plate is covered with a layer of white pigment layer with the thickness of 10 mu m, the white pigment layer is covered with dark color blocks and light color blocks, wherein the dark color blocks and the light color blocks are rectangular with the length of 10cm and the width of 10cm, each dark color block is arranged adjacent to each light color block, the dark color blocks are made of purple ink, and the light color blocks are made of yellow ink; the thickness of the dark color block and the light color block is 10 mu m;
grooves are formed in the areas where the dark color blocks exist on the surface of the light guide plate, the grooves are formed by laser etching, the grooves are enclosed into a plurality of congruent squares, and an included angle of 45 degrees is formed between the grooves and the long sides of the light guide plate;
the width of the grooves was 0.01mm, the depth was 0.07mm, and the adjacent distance between the parallel grooves was 0.1mm.
Related experiment and effect data:
the hot spot effect was detected for the color photovoltaic modules of examples 1 to 5 and comparative examples, in which the temperatures of the center points of the dark color patch and the center point of the light color patch were detected by a temperature measuring gun, and the temperature difference between the temperature of the center point of the dark color patch and the temperature of the center point of the light color patch was calculated again by calculating the average value.
The test results are shown in the following table:
Temperature difference (DEG C) | |
Example 1 | 4.55 |
Example 2 | 4.48 |
Example 3 | 4.45 |
Example 4 | 4.53 |
Example 5 | 4.70 |
Comparative example 1 | 5.0 |
Comparative example 2 | 4.44 |
Comparative example 3 | 4.73 |
The temperature difference in the table refers to the temperature difference between the temperature of the center point of the dark color patch and the temperature of the center point of the light color patch.
As can be seen from the above table, the temperature differences were all significantly reduced in examples 1-5 relative to comparative example 1.
In comparative examples 1-3, it was found that the temperature difference showed a decreasing trend with increasing trench depth.
Comparative examples 1 and 3, example 1 had a significantly lower temperature difference than comparative example 3, example 1 had a groove depth of 0.1mm, and comparative example 3 had a groove depth of 0.07mm, indicating that the shallow groove significantly resulted in an increase in temperature difference after the groove depth was less than 0.1 mm.
The temperature difference between comparative example 3 and comparative example 2 was about the same as that of example 3 and comparative example 2, but the trench depth of comparative example 2 was 0.17mm and the trench depth of example 3 was 0.15mm, which suggests that the effect on the temperature difference becomes very limited by continuing to deepen the trench depth after the trench depth exceeded 0.15 mm.
The white LED lamps of examples 1-5 and comparative examples 1-3 were turned on to emit light, and the dark color patches of examples 1-5 and comparative examples 2-3 were observed in dark, and the dark color patches of examples 1-5 and comparative examples 2-3 were found to be more visible as a whole, with the dark color patches and the light color patches being more coordinated in color and more similar to the daytime effect, while the dark color patches of comparative example 1 were not visibly distinguishable from the dark color patches of comparative example 1. This shows that the grooves on the light guide plate can significantly optimize the color development effect and visual effect of the color photovoltaic module at night.
Various embodiments of the application may exist in a range of forms; it should be understood that the description in a range format is merely for convenience and brevity and should not be construed as a rigid limitation on the scope of the application; it is therefore to be understood that the range description has specifically disclosed all possible sub-ranges and individual values within that range. For example, it should be considered that a description of a range from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5, and 6, wherever applicable. In addition, whenever a numerical range is referred to herein, it is meant to include any reference number (fractional or integer) within the indicated range.
In the present application, unless otherwise specified, terms such as "upper" and "lower" are used specifically to refer to the orientation of the drawing in the figures. In addition, in the description of the present specification, the terms "include", "comprising" and the like mean "including but not limited to". Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element. Relational terms such as "first" and "second", and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Herein, "and/or" describing an association relationship of an association object means that there may be three relationships, for example, a and/or B, may mean: a alone, a and B together, and B alone. For the association relation of more than three association objects described by the "and/or", it means that any one of the three association objects may exist alone or any at least two of the three association objects exist simultaneously, for example, for a, and/or B, and/or C, any one of the A, B, C items may exist alone or any two of the A, B, C items exist simultaneously or three of the three items exist simultaneously. Herein, "at least one" means one or more, and "a plurality" means two or more. "at least one", "at least one" or the like refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, "at least one (individual) of a, b, or c," or "at least one (individual) of a, b, and c," may each represent: a, b, c, a-b (i.e., a and b), a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple, respectively.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The color photovoltaic component with obvious color development at night is characterized by comprising a photovoltaic cell panel and a color layer arranged on the photovoltaic cell panel,
the photovoltaic cell panel comprises a panel frame, a backboard, a photovoltaic cell and a transparent front plate, wherein the backboard, the photovoltaic cell and the transparent front plate are sequentially arranged in the panel frame in a laminated mode, adhesive films are arranged on two sides of the photovoltaic cell and are respectively adhered to the backboard and the transparent front plate through the adhesive films, and a junction box electrically connected with the photovoltaic cell is arranged on the backboard;
the color layer comprises a transparent light guide plate arranged on the transparent front plate and a pigment layer arranged on one surface of the transparent light guide plate far away from the photovoltaic cell panel, and the pigment layer comprises a dark color block and a light color block;
A plurality of grooves are formed in the surface, far away from the photovoltaic cell panel, of the transparent light guide plate, and the surface is opposite to the region of the dark color block;
the side of the transparent light guide plate is provided with a light source.
2. The color photovoltaic module of claim 1, wherein the width of the groove is 0.01-0.05mm.
3. The color photovoltaic module of claim 1, wherein the depth of the grooves is 0.1-0.15mm.
4. The color photovoltaic assembly of claim 1 wherein the grooves comprise first grooves equally spaced apart in parallel along a first direction and second grooves equally spaced apart in parallel along a second direction, the first and second directions having a predetermined angle therebetween.
5. The night-time color-developing conspicuous color photovoltaic assembly of claim 4 wherein the predetermined angle is 90 °.
6. The night-time color photovoltaic assembly of claim 4, wherein,
the space between the first grooves is 0.1-0.3mm; and/or the number of the groups of groups,
the spacing between the second grooves is 0.1-0.3mm.
7. The color photovoltaic module of claim 1, wherein dots are provided at the edges of the light guide plate.
8. A building, characterized in that the building is provided with a color photovoltaic module with obvious night color development according to any one of claims 1 to 7.
9. An urban public facility, characterized in that the colored photovoltaic module with obvious night color development is arranged on a personal electricity utilization or storage facility.
10. A personal electricity or electricity storage facility, wherein the personal electricity or electricity storage facility is provided with the color photovoltaic module with obvious night color development as claimed in any one of claims 1 to 7.
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