CN115799374A - Color photovoltaic module with obvious color development at night and application thereof - Google Patents
Color photovoltaic module with obvious color development at night and application thereof Download PDFInfo
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- CN115799374A CN115799374A CN202211370794.1A CN202211370794A CN115799374A CN 115799374 A CN115799374 A CN 115799374A CN 202211370794 A CN202211370794 A CN 202211370794A CN 115799374 A CN115799374 A CN 115799374A
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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]
Abstract
The color photovoltaic module 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 panel, a photovoltaic cell and a transparent front panel which are sequentially stacked in the cell panel frame, adhesive films are arranged on two sides of the photovoltaic cell and are respectively adhered to the back panel and the transparent front panel through the adhesive films, and a junction box electrically connected with the photovoltaic cell is arranged on the back panel; 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 area, corresponding to the dark color blocks, on the surface, far away from the photovoltaic cell panel, of the transparent light guide plate; the side edge of the transparent light guide plate is provided with a light source. The color development is more obvious at night, and the hot spot effect can be weakened in the daytime.
Description
Technical Field
The application relates to the field of photovoltaics, in particular to a colorful photovoltaic module with obvious color development at night and a preparation method and application thereof.
Background
With the development of the photovoltaic industry, the cost of photovoltaic panels is decreasing, and the combination of photovoltaic technology and urbanization is becoming more mature, photovoltaic panels begin to show a trend of large-scale application in urban construction. One important aspect of the application of photovoltaic panels in urban construction is the application to the exterior of buildings. Because photovoltaic cell board itself is mainly black or blue, when photovoltaic cell board laid the building outside, can cause the influence to the pleasing to the eye of building. In order to increase the aesthetic feeling of the photovoltaic cell panel, the photovoltaic cell panel is colored and patterned by pigment when being laid outside a building. This can reduce photovoltaic cell panel's generated power to a certain extent, but can promote its aesthetic measure greatly.
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, a light source is arranged at the edge of the plate, so that the plate can irradiate the surface of the photovoltaic cell panel after light is guided at night, and the patterns on the surface of the photovoltaic cell panel can be seen. The patterns generally have dark color blocks and light color blocks, and the dark color blocks are not obvious in color development at night due to low overall brightness; and under the irradiation of sunlight in daytime, the visible light transmittance of the dark color blocks is lower, so that the hot spot effect is easily caused.
Disclosure of Invention
The embodiment of the application provides a photovoltaic module with obvious color development at night and a preparation method thereof, and aims to solve the technical problems that the color development of a dark color block is not obvious at night and a hot spot effect is generated in the day.
In a first aspect, the embodiment of the application provides a color photovoltaic module with obvious color development at night, the color photovoltaic module with obvious color development at night comprises a photovoltaic cell panel and a color layer arranged on the photovoltaic cell panel,
the photovoltaic cell panel comprises a cell panel frame, a back panel, a photovoltaic cell and a transparent front panel, wherein the back panel, the photovoltaic cell and the transparent front panel are sequentially stacked in the cell panel frame;
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 area, corresponding to the dark color block, of one surface, far away from the photovoltaic cell panel, of the transparent light guide plate;
and a light source is arranged at the side edge of the transparent light guide plate.
In some embodiments of the present application, the width of the groove is 0.01-0.05mm.
In some embodiments of the present application, the depth of the groove is 0.1-0.15mm.
In some embodiments of the present application, the grooves include first grooves arranged in parallel at equal intervals in a first direction and second grooves arranged in parallel at equal intervals in a second direction, the first direction and the second direction having a predetermined included angle therebetween.
In some embodiments of the present application, the predetermined included angle is 90 °.
In some embodiments of the present application, the first grooves have a spacing of 0.1-0.3mm therebetween; and/or the presence of a gas in the gas,
the distance between the second grooves is 0.1-0.3mm.
In some embodiments of the present application, dots are disposed at edges of the light guide plate.
In a second aspect, an embodiment of the present application provides a building, where the color photovoltaic module that develops color obviously at night is disposed on the building.
In a third aspect, an embodiment of the present application provides an urban public facility, where the urban public facility is provided with a color photovoltaic module that develops color obviously at night according to any of the embodiments of the first aspect.
In a fourth aspect, embodiments of the present application provide an individual electricity utilization or storage facility, where the individual electricity utilization or storage facility is provided with a color photovoltaic module that is obvious in color development at night, as described in any of the embodiments 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 light guide plate, the grooves are formed in the region, opposite to the dark color block, of the transparent light guide plate, and light incident from the side portion of the transparent light guide plate can be reflected among the grooves for multiple times at night, so that the light distribution is more concentrated in the region where the dark color block is located, the brightness of the dark color block is increased, and the dark color block is more obvious in color development; in 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 more easily incident into the light guide plate and further enters the photovoltaic cell panel, the sunlight incidence amount 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 present application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
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 view illustrating a distribution structure of grooves on a light guide plate according to embodiment 1 of the present application;
fig. 3 is a schematic view showing light paths of light incident from the side of the transparent light guide plate reflected between the grooves 3 a plurality of times;
fig. 4 is a schematic view of the light path of sunlight that is obliquely incident into the groove and then reflected in the groove for multiple times.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Unless otherwise specifically noted, terms used herein are to 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. If there is a conflict, the present specification will control.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present application are commercially available or can be prepared by an existing method.
The existing photovoltaic module has the technical problems that the visible light irradiating on the photovoltaic cell panel covering the low-light-transmission pigment part is less, and the hot spot effect is generated.
In order to solve the technical problems, the general idea of the technical scheme provided by the embodiment of the application is as follows:
in a first aspect, the embodiment of the application provides a color photovoltaic module with obvious color development at night, the color photovoltaic module with obvious color development at night comprises a photovoltaic cell panel and a color layer arranged on the photovoltaic cell panel,
the photovoltaic cell panel comprises a cell panel frame, a back panel, a photovoltaic cell and a transparent front panel, wherein the back panel, the photovoltaic cell and the transparent front panel are sequentially stacked in the cell panel frame;
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 area, corresponding to the dark color block, of one surface, far away from the photovoltaic cell panel, of the transparent light guide plate;
and a light source is arranged at the side edge of the transparent light guide plate.
The panel frame is used to hold other plate-like members of the photovoltaic panel, including a back plate, photovoltaic cells, and a transparent front plate, as will be appreciated by those skilled in the art. The material of the cell plate frame can adopt the conventional material in the field, such as a high molecular material and a metal material.
It will be understood by those skilled in the art that the backsheet is a product commercialized in the art. The back sheet is mainly used for protecting the photovoltaic cell and providing support for the photovoltaic cell.
It will be understood by those skilled in the art that the transparent front plate is a product commercialized in the art, and the transparent front plate commonly used in the art is made of ultra-white glass. The transparent front plate can also be made of transparent polymers.
As will be appreciated by those skilled in the art, the junction box is used to output the photocurrent generated by the photovoltaic cell.
As will be appreciated by those skilled in the art, the transparent light guide plate can be made of a material with high transparency, such as glass or organic glass.
The pigment layer is composed of pigment, and the pigment can be selected from common pigment. In a preferred embodiment, the pigment is a UV light curable ink. The UV light-cured ink has the characteristics of strong adhesion, smooth surface, quick curing and film forming, simple use and the like. The UV light curing 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, in this application, the dark color patches are formed from dark color pigments in the color pigment layer, and the light color patches are formed from light color pigments in the color pigment layer.
As can be understood by those skilled in the art, the light source may be a conventional light source, and in practical applications, an LED lamp is generally used. The light source can be arranged outside the transparent light guide plate, for example, the LED lamp is tightly attached to the side edge of the transparent light guide plate, and an outer frame is arranged to fix the LED lamp and the transparent light guide plate; or the inside of the transparent light guide plate is arranged, for example, a groove is etched on the side edge of the transparent light guide plate through laser, and then the LED lamp is embedded into the groove.
Those skilled in the art will appreciate that there are many known ways to form the grooves in the plate, and in this application, as a preferred embodiment, the grooves are formed by laser etching.
Referring to fig. 3, at 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 region 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, in the daytime, sunlight obliquely irradiates the photovoltaic cell panel in most cases, and when there is no groove, the sunlight directly obliquely irradiates the transparent light guide plate, and a substantial portion of the sunlight is reflected; when the groove exists, the oblique incidence groove can reflect in the groove for multiple times, the sunlight can be reflected and refracted on the wall of the groove at the same time, and the refracted part is equivalent to the part which is successfully incident to the transparent light guide plate. Because the sunlight can be reflected in the grooves for multiple times, each reflection is accompanied by refraction, most of the sunlight can finally enter the transparent light guide plate in a refraction mode.
The above principle of the light path is only used as an illustration of a part of the principle of the present invention, in practical cases, the groove wall and the groove bottom cannot be plane, the light path can be more complicated, but in the whole, the light path is beneficial to increase the incidence of light.
According to the light guide plate, the grooves are formed in the region, opposite to the dark color block, of the transparent light guide plate, and light incident from the side portion of the transparent light guide plate can be reflected among the grooves for multiple times at night, so that the light distribution is more concentrated in the region where the dark color block is located, the brightness of the dark color block is increased, and the dark color block is more obvious in color development; in the daytime, sunlight obliquely irradiates the photovoltaic cell panel under most conditions, and the sunlight is reflected in the grooves for multiple times after being obliquely incident into the grooves, so that the sunlight is more easily incident into the light guide plate and further enters the photovoltaic cell panel, the sunlight incidence amount of the area where the dark color block is located is increased, and the hot spot effect is weakened.
In some embodiments of the present application, the width of the groove is 0.01-0.05mm.
As can be understood by those skilled in the art, when the groove is narrow, the pigment is not easy to permeate into the groove, and the sunlight is obliquely incident into the groove and then directly reflected on the surface of the transparent light guide plate for multiple times. If the pigment is infiltrated into the grooves, the surfaces of the grooves are covered, and a large amount of sunlight is absorbed, resulting in a reduction in the incidence of sunlight from the grooves into the transparent light guide plate.
In some embodiments of the present application, the depth of the groove is 0.1-0.15mm.
As will be understood by those skilled in the art, when the depth of the groove is increased, the light incident from the side of the transparent light guide plate will be more significantly concentrated in the area where the dark color block is located, and meanwhile, the obliquely incident sunlight will undergo more reflections, so as to increase the incident amount of the sunlight in the area where the dark color block is located, that is, as the depth of the groove increases, the above beneficial effects will tend to be enhanced; however, after the depth of the groove is increased to a certain degree, the enhancement of the beneficial effect becomes more remarkable, and the processing difficulty is increased along with the deepening of the groove, so that the groove depth is more suitable to adopt the numerical value.
In some embodiments of the present application, the grooves include first grooves arranged in parallel at equal intervals in a first direction and second grooves arranged in parallel at equal intervals in a second direction, the first direction and the second direction having a predetermined included angle therebetween.
It will be appreciated by those skilled in the art that the first grooves are equally spaced and parallel to each other and the second grooves are equally spaced and parallel to each other so that the grooves form a uniform grid.
In some embodiments of the present application, the predetermined included angle is 90 °.
In some embodiments of the present application, the first grooves have a pitch of 0.1 to 0.3mm; and/or the presence of a gas in the atmosphere,
the distance between the second grooves is 0.1-0.3mm.
As can be understood by those skilled in the art, the smaller the distance between the grooves is, the higher the concentration degree of light incident from the side of the transparent light guide plate in the region of the dark color block is, and the greater the amount of sunlight incident on the region of the dark color block is, but on the one hand, the overall aesthetic degree is also affected by the excessively high brightness of the dark color block, and on the other hand, the denser the grooves are, the higher the processing cost is, so the distance between the grooves is more suitable for adopting the above numerical values.
In some embodiments of the present application, dots are disposed at edges of the light guide plate.
As will be understood by those skilled in the art, the dots are conventional structures of light guide plates, the light emitted from the light source is concentrated, and the dots can make the concentrated light refracted at the dots multiple times and thus more uniform.
In a second aspect, an embodiment of the present application provides a building, where the color photovoltaic module that develops color obviously at night is disposed on the building. The building may be any form of building including, but not limited to, a building, a bridge, a greening facility, a factory building, and the like. The building is realized based on the embodiment of the first aspect, and the specific implementation of the building may refer to the embodiment of the first aspect, and because the building adopts part or all of the technical solutions of the above embodiment, the building at least has all the beneficial effects brought by the technical solutions of the above embodiment, and details are not repeated here.
In a third aspect, an embodiment of the present application provides an urban public facility, where the urban public facility is provided with a color photovoltaic module that develops color obviously at night according to any of the embodiments of the first aspect. The urban public facility may be any form of urban public facility including, but not limited to, billboards, buses, bus stops, street lights, and the like. The urban public facility is implemented based on the embodiment of the first aspect, and a specific implementation manner of the urban public facility may refer to the embodiment of the first aspect, and since the urban public facility adopts a part or all of the technical solutions of the above embodiments, at least all beneficial effects brought by the technical solutions of the above embodiments are achieved, and details are not repeated here.
In a fourth aspect, embodiments of the present application provide an individual electricity utilization or storage facility, where the individual electricity utilization or storage facility is provided with a color photovoltaic module that is obvious in color development at night, as described in any of the embodiments of the first aspect. The personal electricity or electricity storage facility may be any facility capable of storing or using electricity in any form, including but not limited to a charger, a battery, an electric or hybrid vehicle, a drone, a cell phone, a computer, etc. The personal electricity utilization or storage facility is implemented based on the embodiment of the first aspect, and the specific implementation of the personal electricity utilization or storage facility may refer to the embodiment of the first aspect.
The present application is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present application. The experimental methods without specifying specific conditions in the following examples were generally determined according to national standards. If there is no corresponding national standard, it is carried out according to the universal international standard, the conventional conditions, or the conditions recommended by the manufacturer.
Example 1
The embodiment provides a colored photovoltaic module that colour development is obvious night, includes:
the photovoltaic cell panel is 120cm in length and 60cm in width, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 type photovoltaic cell panel produced by Longyan energy technology (Hangzhou) Limited company; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA (ethylene vinyl acetate) adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a laminated manner are embedded in the aluminum alloy frame;
the solar cell panel comprises a rectangular light guide plate, a photovoltaic cell panel, an EVA (ethylene vinyl acetate) adhesive, an aluminum alloy frame, a rectangular light guide plate and a light guide plate, wherein the rectangular light guide plate is 5mm in thickness and covers the ultra-white glass front plate, the shape and size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the length is 120cm and the width is 60 cm), the light guide plate is adhered to the aluminum alloy frame through the 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 the corner points of the four corners of the light guide plate and the nearest groove is also 6cm, 19 grooves are arranged on the long edge of the light guide plate, and 9 grooves are arranged on the short edge of the light guide plate;
white light LED lamps are filled in all the grooves, the notches of the grooves are sealed through EVA hot melt adhesive, and the white light LED lamps penetrate through the seals formed by the hot melt adhesive and are connected with an external power supply;
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 and are circular with the diameter of 2mm, wherein 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 central point of the square in the square array, namely, 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 microns, referring to fig. 1, the white pigment layer is covered with a dark color block and a light color block, wherein the dark color block and the light color block are rectangles 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, grooves are formed in the area of the surface of the light guide plate where the dark color blocks exist, the grooves are formed by laser etching, the grooves surround a plurality of congruent squares, and an included angle of 45 degrees is formed between each groove and a long edge of the light guide plate;
the width of the grooves is 0.01mm, the depth of the grooves 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 merely illustrated as a schematic, and the density of the trenches in fig. 2 is different from the actual density of the embodiment.
Example 2
This embodiment is different from embodiment 1 only in that the depth of the groove is 0.13mm. The method comprises the following specific steps:
the embodiment provides a colored photovoltaic module that colour development is obvious night, includes:
the photovoltaic cell panel is 120cm in length and 60cm in width, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 type photovoltaic cell panel produced by Longyan energy technology (Hangzhou) Limited company; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA (ethylene vinyl acetate) adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a laminated mode are embedded in the aluminum alloy frame;
the rectangular light guide plate is 5mm in thickness, covers the ultra-white glass front plate, is identical to the photovoltaic cell panel in shape and size (namely, 120cm in length and 60cm in width), is adhered to the aluminum alloy frame through an EVA (ethylene vinyl acetate) adhesive, is made of glass, is etched with grooves through laser at the side edges, the distance between adjacent grooves is 6cm, the distance between the corner points of four corners of the light guide plate and the nearest groove is 6cm, 19 grooves are formed in the long edge of the light guide plate, and 9 grooves are formed in the short edge of the light guide plate;
white light LED lamps are filled in all the grooves, the notches of the grooves are sealed through EVA hot melt adhesive, and the white light LED lamps penetrate through the seals formed by the hot melt adhesive and are connected with an external power supply;
a dot area with the width of 10cm is arranged at the edge of the light guide plate, white dots are printed on the dot area and are round with the diameter of 2mm, wherein 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 central point of a square in the square array, namely, 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, the thickness of the white pigment layer is 10 micrometers, the white pigment layer is covered with deep color blocks and light color blocks, the deep color blocks and the light color blocks are rectangles with the length of 10cm and the width of 10cm, each deep color block is arranged adjacent to the light color block, the material of each deep color block is purple ink, and the material of each light color block is yellow ink; the thickness of the dark color block and the light color block is 10 mu m;
grooves are formed in the area, where the dark color blocks exist, of the surface of the light guide plate and are formed through laser etching, a plurality of congruent squares are formed by enclosing the grooves, and 45-degree included angles are formed between the grooves and the long edge of the light guide plate;
the width of the grooves is 0.01mm, the depth is 0.3mm, and the adjacent distance between the parallel grooves is 0.1mm.
Example 3
This embodiment is different from embodiment 1 only in that the depth of the groove is 0.15mm. The method comprises the following specific steps:
the embodiment provides a colored photovoltaic module that colour development is obvious night, includes:
the photovoltaic cell panel is 120cm in length and 60cm in width, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 type photovoltaic cell panel produced by Longyan energy technology (Hangzhou) Limited company; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA (ethylene vinyl acetate) adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a laminated manner are embedded in the aluminum alloy frame;
the solar cell panel comprises a rectangular light guide plate, a photovoltaic cell panel, an EVA (ethylene vinyl acetate) adhesive, an aluminum alloy frame, a rectangular light guide plate and a light guide plate, wherein the rectangular light guide plate is 5mm in thickness and covers the ultra-white glass front plate, the shape and size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the length is 120cm and the width is 60 cm), the light guide plate is adhered to the aluminum alloy frame through the 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 the corner points of the four corners of the light guide plate and the nearest groove is also 6cm, 19 grooves are arranged on the long edge of the light guide plate, and 9 grooves are arranged on the short edge of the light guide plate;
white light LED lamps are filled in all the grooves, the notches of the grooves are sealed through EVA hot melt adhesive, and the white light LED lamps penetrate through the seals formed by the hot melt adhesive and are connected with an external power supply;
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 and are circular with the diameter of 2mm, wherein 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 central point of the square in the square array, namely, 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, the thickness of the white pigment layer is 10 micrometers, the white pigment layer is covered with deep color blocks and light color blocks, the deep color blocks and the light color blocks are rectangles with the length of 10cm and the width of 10cm, each deep color block is arranged adjacent to the light color block, the material of each deep color block is purple ink, and the material of each light color block is yellow ink; the thickness of the dark color block and the light color block is 10 mu m;
grooves are formed in the area, where the dark color blocks exist, of the surface of the light guide plate and are formed through laser etching, a plurality of congruent squares are formed by enclosing the grooves, and 45-degree included angles are formed between the grooves and the long edge of the light guide plate;
the width of the grooves is 0.01mm, the depth is 0.15mm, and the adjacent distance between the parallel grooves is 0.1mm.
Example 4
This embodiment is different from embodiment 1 only in that the width of the groove is 0.05mm. The method comprises the following specific steps:
the embodiment provides a colored photovoltaic module that colour development is obvious night, includes:
the photovoltaic cell panel is 120cm long and 60cm wide, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 type photovoltaic cell panel produced by Longyan energy technology (Hangzhou) Limited company; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA (ethylene vinyl acetate) adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a laminated mode are embedded in the aluminum alloy frame;
the solar cell panel comprises a rectangular light guide plate, a photovoltaic cell panel, an EVA (ethylene vinyl acetate) adhesive, an aluminum alloy frame, a rectangular light guide plate and a light guide plate, wherein the rectangular light guide plate is 5mm in thickness and covers the ultra-white glass front plate, the shape and size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the length is 120cm and the width is 60 cm), the light guide plate is adhered to the aluminum alloy frame through the 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 the corner points of the four corners of the light guide plate and the nearest groove is also 6cm, 19 grooves are arranged on the long edge of the light guide plate, and 9 grooves are arranged on the short edge of the light guide plate;
white light LED lamps are filled in all the grooves, the notches of the grooves are sealed through EVA hot melt adhesive, and the white light LED lamps penetrate through the seals formed by the hot melt adhesive and are connected with an external power supply;
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 and are circular with the diameter of 2mm, wherein 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 central point of the square in the square array, namely, 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, the thickness of the white pigment layer is 10 micrometers, the white pigment layer is covered with deep color blocks and light color blocks, the deep color blocks and the light color blocks are rectangles with the length of 10cm and the width of 10cm, each deep color block is arranged adjacent to each light color block, the material of each deep color block is purple ink, and the material of each light color block is yellow ink; the thickness of the dark color block and the light color block is both 10 mu m;
grooves are formed in the surface of the light guide plate in the area where the dark color blocks exist, the grooves are formed through laser etching, the grooves are surrounded into a plurality of congruent squares, and the grooves and the long edge of the light guide plate form an included angle of 45 degrees;
the width of the grooves is 0.05mm, the depth is 0.1mm, and the adjacent distance between the parallel grooves is 0.1mm.
Example 5
This embodiment is different from embodiment 1 only in that the adjacent distance between the mutually parallel grooves is 0.3mm. The method comprises the following specific steps:
the embodiment provides a colored photovoltaic module that colour development is obvious night, includes:
the photovoltaic cell panel is 120cm in length and 60cm in width, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 type photovoltaic cell panel produced by Longyan energy technology (Hangzhou) Limited company; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA (ethylene vinyl acetate) adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a laminated mode are embedded in the aluminum alloy frame;
the solar cell panel comprises a rectangular light guide plate, a photovoltaic cell panel, an EVA (ethylene vinyl acetate) adhesive, an aluminum alloy frame, a rectangular light guide plate and a light guide plate, wherein the rectangular light guide plate is 5mm in thickness and covers the ultra-white glass front plate, the shape and size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the length is 120cm and the width is 60 cm), the light guide plate is adhered to the aluminum alloy frame through the 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 the corner points of the four corners of the light guide plate and the nearest groove is also 6cm, 19 grooves are arranged on the long edge of the light guide plate, and 9 grooves are arranged on the short edge of the light guide plate;
white light LED lamps are filled in all the grooves, the notches of the grooves are sealed through EVA hot melt adhesive, and the white light LED lamps penetrate through the seals formed by the hot melt adhesive and are connected with an external power supply;
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 and are circular with the diameter of 2mm, wherein 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 central point of the square in the square array, namely, 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, the thickness of the white pigment layer is 10 micrometers, the white pigment layer is covered with deep color blocks 1 and light color blocks 2, the deep color blocks 1 and the light color blocks 2 are rectangles with the length of 10cm and the width of 10cm, each deep color block 1 is arranged adjacent to the light color block 2, the material of the deep 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 width of the grooves 3 is 0.01mm, the depth is 0.1mm, and the adjacent distance between the grooves 3 which are parallel to each other is 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 specific steps:
this comparative example provides a colored photovoltaic module that colour development is obvious night, includes:
the photovoltaic cell panel is 120cm in length and 60cm in width, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 type photovoltaic cell panel produced by Longyan energy technology (Hangzhou) Limited company; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA (ethylene vinyl acetate) adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a laminated manner are embedded in the aluminum alloy frame;
the solar cell panel comprises a rectangular light guide plate, a photovoltaic cell panel, an EVA (ethylene vinyl acetate) adhesive, an aluminum alloy frame, a rectangular light guide plate and a light guide plate, wherein the rectangular light guide plate is 5mm in thickness and covers the ultra-white glass front plate, the shape and size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the length is 120cm and the width is 60 cm), the light guide plate is adhered to the aluminum alloy frame through the 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 the corner points of the four corners of the light guide plate and the nearest groove is also 6cm, 19 grooves are arranged on the long edge of the light guide plate, and 9 grooves are arranged on the short edge of the light guide plate;
white light LED lamps are filled in all the grooves, the notches of the grooves are sealed through EVA hot melt adhesive, and the white light LED lamps penetrate through the seals formed by the hot melt adhesive and are connected with an external power supply;
a dot area with the width of 10cm is arranged at the edge of the light guide plate, white dots are printed on the dot area and are round with the diameter of 2mm, wherein 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 central point of a square in the square array, namely, 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, the thickness of the white pigment layer is 10 micrometers, the white pigment layer is covered with deep color blocks and light color blocks, the deep color blocks and the light color blocks are rectangles with the length of 10cm and the width of 10cm, each deep color block is arranged adjacent to each light color block, the material of each deep color block is purple ink, and the material of each light color block is yellow ink; the thickness of the dark color blocks and the light color blocks are both 10 μm.
Comparative example 2
The present comparative example differs from example 1 only in that the depth of the groove was 0.17mm. The method comprises the following specific steps:
the embodiment provides a colored photovoltaic module that colour development is obvious night, includes:
the photovoltaic cell panel is 120cm in length and 60cm in width, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 type photovoltaic cell panel produced by Longyan energy technology (Hangzhou) Limited company; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA (ethylene vinyl acetate) adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a laminated mode are embedded in the aluminum alloy frame;
the solar cell panel comprises a rectangular light guide plate, a photovoltaic cell panel, an EVA (ethylene vinyl acetate) adhesive, an aluminum alloy frame, a rectangular light guide plate and a light guide plate, wherein the rectangular light guide plate is 5mm in thickness and covers the ultra-white glass front plate, the shape and size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the length is 120cm and the width is 60 cm), the light guide plate is adhered to the aluminum alloy frame through the 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 the corner points of the four corners of the light guide plate and the nearest groove is also 6cm, 19 grooves are arranged on the long edge of the light guide plate, and 9 grooves are arranged on the short edge of the light guide plate;
white light LED lamps are filled in all the grooves, the notches of the grooves are sealed through EVA hot melt adhesive, and the white light LED lamps penetrate through the seals formed by the hot melt adhesive and are connected with an external power supply;
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 and are circular with the diameter of 2mm, wherein 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 central point of the square in the square array, namely, 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, the thickness of the white pigment layer is 10 micrometers, the white pigment layer is covered with deep color blocks and light color blocks, the deep color blocks and the light color blocks are rectangles with the length of 10cm and the width of 10cm, each deep color block is arranged adjacent to the light color block, the material of each deep color block is purple ink, and the material of each light color block is yellow ink; the thickness of the dark color block and the light color block is 10 mu m;
grooves are formed in the area, where the dark color blocks exist, of the surface of the light guide plate and are formed through laser etching, a plurality of congruent squares are formed by enclosing the grooves, and 45-degree included angles are formed between the grooves and the long edge of the light guide plate;
the width of the grooves is 0.01mm, the depth is 0.17mm, and the adjacent distance between the parallel grooves is 0.1mm.
Comparative example 3
The present comparative example is different from example 1 only in that the depth of the groove is 0.07mm. The method comprises the following specific steps:
the embodiment provides a colored photovoltaic module that colour development is obvious night, includes:
the photovoltaic cell panel is 120cm long and 60cm wide, wherein the photovoltaic cell panel is an ASP-IAL-T0-66 type photovoltaic cell panel produced by Longyan energy technology (Hangzhou) Limited company; the photovoltaic cell panel comprises an aluminum alloy frame, wherein a back plate, an EVA (ethylene vinyl acetate) adhesive film, a photovoltaic cell, an EVA adhesive film and an ultra-white glass front plate which are arranged in a laminated manner are embedded in the aluminum alloy frame;
the solar cell panel comprises a rectangular light guide plate, a photovoltaic cell panel, an EVA (ethylene vinyl acetate) adhesive, an aluminum alloy frame, a rectangular light guide plate and a light guide plate, wherein the rectangular light guide plate is 5mm in thickness and covers the ultra-white glass front plate, the shape and size of the light guide plate are the same as those of the photovoltaic cell panel (namely, the length is 120cm and the width is 60 cm), the light guide plate is adhered to the aluminum alloy frame through the 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 the corner points of the four corners of the light guide plate and the nearest groove is also 6cm, 19 grooves are arranged on the long edge of the light guide plate, and 9 grooves are arranged on the short edge of the light guide plate;
white light LED lamps are filled in all the grooves, the notches of the grooves are sealed through EVA hot melt adhesive, and the white light LED lamps penetrate through the seals formed by the hot melt adhesive and are connected with an external power supply;
a dot area with the width of 10cm is arranged at the edge of the light guide plate, white dots are printed on the dot area and are round with the diameter of 2mm, wherein 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 central point of a square in the square array, namely, 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, the thickness of the white pigment layer is 10 micrometers, the white pigment layer is covered with deep color blocks and light color blocks, the deep color blocks and the light color blocks are rectangles with the length of 10cm and the width of 10cm, each deep color block is arranged adjacent to the light color block, the material of each deep color block is purple ink, and the material of each light color block is yellow ink; the thickness of the dark color block and the light color block is both 10 mu m;
grooves are formed in the surface of the light guide plate in the area where the dark color blocks exist, the grooves are formed through laser etching, the grooves are surrounded into a plurality of congruent squares, and the grooves and the long edge of the light guide plate form an included angle of 45 degrees;
the width of the grooves is 0.01mm, the depth is 0.07mm, and the adjacent distance between the grooves which are parallel to each other is 0.1mm.
Relevant experiments and effect data:
the detection of the hot spot effect is carried out on the colored photovoltaic modules with obvious color development at night in the embodiments 1 to 5 and the comparative example, specifically, the temperature of the center point of the dark color block and the temperature of the center point of the light color block are detected by a temperature measuring gun, the average value is calculated, and then the temperature difference between the temperature of the center point of the dark color block and the temperature of the center point of the light color block is calculated.
The test results are shown in the following table:
| temperature difference (. Degree. 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 center point of the dark color block and the center point of the light color block.
As can be seen from the above table, the temperature difference is significantly reduced in examples 1 to 5 relative to comparative example 1.
Comparing examples 1 to 3, it was found that the temperature difference exhibited a tendency to decrease as the depth of the groove increased.
Comparing example 1 with comparative example 3, the temperature difference of example 1 is significantly lower than that of comparative example 3, the groove depth of example 1 is 0.1mm, and the groove depth of comparative example 3 is 0.07mm, which indicates that the temperature difference is remarkably increased by making the groove shallower after the groove depth is less than 0.1mm.
The temperature difference between comparative example 3 and comparative example 2, and between example 3 and comparative example 2 was about the same, but the groove depth of comparative example 2 was 0.17mm and that of example 3 was 0.15mm, which means that the effect of continuing to deepen the groove depth on the temperature difference becomes very limited after the groove depth exceeded 0.15mm.
The white LED lamps in the examples 1-5 and the comparative examples 1-3 are electrified to emit light, and the observation in a dark place shows that the dark color blocks of the examples 1-5 and the comparative examples 2-3 have obvious color development, better overall visibility, more harmonious colors between the dark color blocks and the light color blocks and closer to the effect of the daytime, while the dark color blocks of the comparative example 1 have unobvious color development, and the comparative example 1 can be obviously distinguished from the dark color blocks by naked eyes. This shows that the color development effect and the visual effect of the color photovoltaic module at night can be significantly optimized by arranging the grooves on the light guide plate.
Various embodiments of the application may exist in a range; it is to be understood that the description in range format is merely for convenience and brevity and should not be construed as an inflexible limitation on the scope of the application; accordingly, the description of a range should be considered to have specifically disclosed all the possible subranges as well as individual numerical values within that range. For example, it is contemplated that the 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 stated range, such as 1, 2, 3, 4, 5, and 6, as applicable regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any number (fractional or integer) recited within the range so indicated.
In this application, where the context requires no explicit explanation, the use of directional words such as "upper" and "lower" in particular refers to the direction of the drawing in the figures. In addition, in the description of the present specification, the terms "include", "includes" and the like mean "including but not limited to". Also, 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 phrases "comprising 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element. In this document, 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" describes an association relationship of associated objects, meaning that there may be three relationships, e.g., a and/or B, may mean: a is present alone, A and B are present simultaneously, and B is present alone. For the association relationship of more than three associated objects described by "and/or", it means that any one of the three associated objects may exist alone, or any at least two of them may exist simultaneously, for example, for a, and/or B, and/or C, it may mean that any one of a, B, and C exists alone, or any two of them exist simultaneously, or three of them exist simultaneously. As used herein, "at least one" means one or more, and "a plurality" means two or more. "at least one," "at least one of the following," or similar expressions, refer to any combination of these items, including any combination of the singular or plural items. For example, "at least one (a), b, or c", or "at least one (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, and c may be single or plural, respectively.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present 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. A color photovoltaic module 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 cell panel frame, a back panel, a photovoltaic cell and a transparent front panel, wherein the back panel, the photovoltaic cell and the transparent front panel are sequentially stacked in the cell panel frame;
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 area, corresponding to the dark color block, of one surface, far away from the photovoltaic cell panel, of the transparent light guide plate;
and a light source is arranged at the side edge of the transparent light guide plate.
2. The night time conspicuous color photovoltaic module of claim 1, wherein said grooves have a width of 0.01-0.05mm.
3. The night time conspicuous color photovoltaic module of claim 1, wherein said grooves have a depth of 0.1-0.15mm.
4. The night-time color-rendering obvious color photovoltaic module as claimed in claim 1, wherein the grooves comprise first grooves which are arranged in parallel at equal intervals along a first direction and second grooves which are arranged in parallel at equal intervals along a second direction, and a predetermined included angle is formed between the first direction and the second direction.
5. The night time conspicuous color photovoltaic module of claim 4, wherein said predetermined included angle is 90 °.
6. The night time conspicuous color photovoltaic module of claim 1,
the distance between the first grooves is 0.1-0.3mm; and/or the presence of a gas in the gas,
the distance between the second grooves is 0.1-0.3mm.
7. The night time color rendering obvious colored photovoltaic module as claimed in claim 1, wherein dots are provided at the edges of the light guide plate.
8. A building provided with a colored photovoltaic module with obvious night color development as claimed in any one of claims 1 to 7.
9. An urban public facility, characterized in that the individual electricity or electricity utilization or storage facility is provided with a colored photovoltaic module with obvious night color development as claimed in any one of claims 1 to 7.
10. An electric or electric facility for individuals, characterized in that the electric or electric facility for individuals is provided with a colorful photovoltaic module which can obviously develop at night and is as claimed in any one of claims 1 to 7.
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