CN218346504U

CN218346504U - Photovoltaic curtain wall assembly capable of changing color

Info

Publication number: CN218346504U
Application number: CN202222258125.7U
Authority: CN
Inventors: 苏维燕; 初文静; 林金锡; 林金汉
Original assignee: Changzhou Almaden Co Ltd
Current assignee: Changzhou Almaden Co Ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-01-20
Anticipated expiration: 2032-08-26

Abstract

The utility model discloses a photovoltaic curtain wall assembly of changeable colour, include: the front glass, the front packaging adhesive film, the battery layer, the back packaging adhesive film and the back glass are sequentially stacked; the front glass is provided with a photochromic/thermochromic coating layer, and the photochromic/thermochromic coating layer is arranged between the front glass and the front packaging adhesive film; the back side packaging adhesive film is provided with a composite coating layer, and the composite coating layer is arranged between the back side packaging adhesive film and the battery piece; when the photochromic/thermochromic coating layer is illuminated, the color of the photochromic/thermochromic coating layer is gradually changed from dark color to transparent; when the composite coating layer is illuminated, the color of the composite coating layer is changed from transparent to high-reflection color. The utility model discloses a but photochromic photovoltaic curtain wall assembly has both reached the purpose of hoisting assembly outward appearance through photic/thermochromism coating film layer and the composite coating film layer that sets up, has realized again regulating and controlling the effect of indoor temperature behind the building curtain with this subassembly.

Description

Photovoltaic curtain wall assembly capable of changing color

Technical Field

The utility model relates to a photovoltaic module technical field, concretely relates to photovoltaic curtain wall assembly of changeable colour.

Background

With the development of solar cell modules, usage scenarios thereof are also more diversified, such as roofs, wall surfaces or windows. However, the transparency of the existing photovoltaic cell module cannot be changed according to external conditions, and the heat generated during the operation of the photovoltaic module can cause the temperature of the module to be increased, thereby affecting the power of the module and limiting the wide application of the photovoltaic cell module. The problem that current photovoltaic module exists during operation and generates heat, when using it as building materials such as roof, wall or window, the heat that produces in the subassembly working process can further propagate to indoor through the conduction of the packaging material of subassembly inlayer to can lead to the increase of indoor heat and the rising of indoor temperature.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the problem that the indoor temperature rises easily that exists when aiming at current photovoltaic module and being used as building material, and the photovoltaic curtain wall assembly that provides a changeable colour, it has the effect of regulation and control temperature, can control indoor temperature and reach the effect warm in winter and cool in summer, also can improve the generating efficiency of subassembly simultaneously.

The utility model discloses a realize through following technical scheme:

a color-changeable photovoltaic curtain wall assembly, characterized in that the photovoltaic curtain wall assembly comprises: the front glass, the front packaging adhesive film, the battery layer, the back packaging adhesive film and the back glass are sequentially stacked; the front glass is provided with a photochromic/thermochromic coating layer, and the photochromic/thermochromic coating layer is arranged between the front glass and the front packaging adhesive film; the back side packaging adhesive film is provided with a composite coating layer, and the composite coating layer is arranged between the back side packaging adhesive film and the battery piece; when the photochromic/thermochromic coating layer is illuminated, the color of the photochromic/thermochromic coating layer is gradually changed from dark color to transparent; when the composite coating layer is illuminated, the color of the composite coating layer is gradually changed from transparent to high-reflection color.

The utility model discloses a photovoltaic curtain wall assembly of changeable colour: by coating the photochromic/thermochromic coating layer on the front glass and coating the composite coating layer (photochromic or/and thermotropic material composite layer) on the back packaging adhesive film, when the back packaging adhesive film in the module is irradiated by sunlight, the color of the composite coating layer is gradually changed from transparent to white or other high-reflection colors after the composite coating layer on the back packaging adhesive film is heated, so that the sunlight can be reflected back to the battery layer, the shading and reflecting effect can be achieved, the transparency can be automatically recovered when the light is dark, the effect of adjustable transparency of the composite coating layer at the gap of the battery layer can be achieved, and the indoor lighting effect can be ensured; the high-reflection color is adjusted by temperature to reflect light, so that more light is reflected to the surface of the battery through the gap between the front glass and the battery piece, the power generation amount of the assembly is improved, the effect of adjusting and controlling the temperature of the assembly is achieved, additional installation of a curtain and other sun-shading objects is not needed, and manpower and material resources are saved; meanwhile, the problem of local hot spots caused by overhigh leakage current of a single battery piece can be avoided.

Because the positive glass is coated with the photochromic/thermochromic coating layer, when the sunlight irradiates the assembly, the photochromic/thermochromic coating layer can change color because the irradiation of the sunlight is heated, and the photochromic/thermochromic coating layer is changed into transparent from deep color under a normal state, so that the whole light transmittance is automatically improved, the highest light transmittance can reach 95 percent, the dark color is recovered when the light is dark, the color-mixing visual effect is achieved, and the absorption of heat radiation is reduced.

The utility model discloses a but photochromic photovoltaic curtain wall assembly has both reached the purpose of promotion subassembly outward appearance through the photic/thermochromism coating film layer and the compound coating film layer that set up, has realized again regulating and controlling the effect of indoor temperature behind as building curtain with this subassembly.

Specifically, in the present invention, the battery layer is formed by connecting a plurality of battery sheets in series. The color of the photochromic/thermochromic coating layer and the composite coating layer changes gradually automatically according to the illumination intensity.

Further, a photovoltaic curtain wall assembly of changeable colour: the photochromic/thermochromic coating layer is in a dark color in a normal state and is used for improving the appearance effect of the component; when the module is irradiated by light or the temperature is increased, the module is changed from dark color to transparent color, and the light transmittance is improved, so that the power of the module is increased.

Further, a photovoltaic curtain wall assembly of changeable colour: the light transmittance of the photochromic/thermochromic coating layer is not more than 50% in a normal state, and is not more than 95% when the photochromic/thermochromic coating layer is illuminated or the temperature is increased. The highest light transmittance of the photochromic/thermochromic coating layer can reach 95 percent after illumination.

Further, a photovoltaic curtain wall assembly of changeable colour: the thickness of the photochromic/thermochromic coating layer is set to be 10-40 mu m.

Further, a photovoltaic curtain wall assembly of changeable colour: the composite coating layer is a photoinduced or/and thermotropic material composite layer.

Further, a photovoltaic curtain wall assembly of changeable colour: the photochromic or/and thermotropic material in the photochromic or/and thermotropic material composite layer has a discoloration temperature of more than 50 ℃.

Further, a photovoltaic curtain wall assembly of changeable colour: the thickness of the thermally induced material in the thermally induced or/and thermally induced material composite layer is set to be 5-30 μm.

Further, a photovoltaic curtain wall assembly of changeable colour: the composite coating layer is transparent in a normal state, changes from transparent to high-reflection color when being illuminated or heated, and is used for reflecting sunlight to achieve the effects of shading and reflecting.

Further, a photovoltaic curtain wall assembly of changeable colour: the composite coating layer is arranged to be of a grid structure and corresponds to the positions of gaps of all the battery pieces in the battery layer and the periphery of the assembly.

Specifically, the utility model discloses in the coating of composite coating layer just correspond to non-battery region on the back side packaging glued membrane, the composite coating position promptly around the subassembly with the clearance department of each battery piece on battery layer, form latticed composite coating layer structure.

The utility model has the advantages that:

(1) The utility model provides a but color changing photovoltaic curtain wall assembly, the coating film layer that discolours through the photochromism that sets up is when improving subassembly outward appearance effect, can also utilize the illumination of photochromism coating film layer or heat up the back and become transparent effect by dark, reach and promote the luminousness, increase subassembly light utilization ratio to promote the effect of subassembly power.

(2) The utility model discloses a subassembly has realized when light is strong through the compound coating film layer that sets up: the color is changed from colorless to colored, so that the light penetration is reduced, the shielding effect is improved, and the temperature increase caused by illumination in a room is reduced.

(3) The utility model discloses an its low in production cost of subassembly, production simple process, the practicality is high, saves whole manufacturing cost. The utility model discloses a visible light transmittance can be adjusted to the subassembly to guarantee indoor daylighting.

(4) The utility model discloses a changeable colour photovoltaic curtain wall assembly, it has the accuse temperature effect, can control indoor temperature and reach warm in winter and cool in summer's effect, also can improve the generating efficiency simultaneously. The utility model discloses an adjustable colour of subassembly promotes photovoltaic module's visual effect. The utility model discloses the photochromic/thermochromic coating film layer and the compound coating film layer that well set up can play the effect of mixing of colors, can reduce the absorption of heat radiation, adopt this kind of subassembly of the utility model can solve the problem that exists when current photovoltaic module is used as building material.

(5) The color-changeable photovoltaic curtain wall component has simple structural design, can increase the utilization of reflected light, absorbs more sunlight to generate electricity, and improves the generating efficiency; meanwhile, the temperature of the component can be controlled, and hot spot hazard is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a color-changeable photovoltaic curtain wall assembly provided in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of the composite coating layer of the present invention.

The mark in the figure is: 1 front glass, 2 front packaging adhesive films, 3 battery layers, 4 back packaging adhesive films, 5 back glass, 1-1 photochromic/thermochromic coating layer and 4-1 composite coating layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships for convenience of description and simplicity of description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

Example 1

As shown in fig. 1-2, a variable color photovoltaic curtain wall assembly comprises: the solar cell comprises front glass 1, a front packaging adhesive film 2, a cell layer 3, a back packaging adhesive film 4 and back glass 5 which are sequentially stacked; the front glass 1 is provided with a photochromic/thermochromic coating layer 1-1, and the photochromic/thermochromic coating layer 1-1 is arranged between the front glass 1 and the front packaging adhesive film 2; the back side packaging adhesive film 4 is provided with a latticed composite coating layer 4-1, and the composite coating layer 4-1 is arranged between the back side packaging adhesive film 4 and the battery piece 3;

wherein: the photochromic/thermochromic coating layer 1-1 is dark in a normal state, so that the appearance effect of the component can be improved; when the photochromic/thermochromic coating layer 1-1 is illuminated or the temperature is increased, the color of the photochromic/thermochromic coating layer is gradually changed from dark color to transparent, the light transmittance is improved (the light transmittance after being improved is about 50-95 percent and is particularly related to illumination or increased temperature), and the generated power of the photovoltaic curtain wall component can be increased after the light transmittance is improved;

the composite coating layer 4-1 is a photoinduced or/and thermotropic material composite layer with a grid structure, the composite coating layer 4-1 is transparent in a normal state, the color of the composite coating layer is changed from transparent to high-reflection color when the composite coating layer is illuminated or the temperature is raised, sunlight leaking to the back side packaging adhesive film 4 from the gaps of the battery pieces and the periphery of the component can be reflected back to the battery layer 3, the effects of shading and reflecting are achieved, the light utilization rate of the component can be improved, and the power generation effect is improved.

Preferably, the color changing temperature of the photoinduced material in the photoinduced or/and thermotropic material composite layer 4-1 is more than 50 ℃; while the thickness of the thermotropic material is set to 5-30 μm.

The utility model provides a but color changing photovoltaic curtain wall assembly through the photic thermochromism coating film layer 1-1 and the compound coating film layer 4-1 who sets up, has both reached the purpose that promotes subassembly outward appearance visual effect, can reduce the absorption of thermal radiation again simultaneously, has realized can regulating and control indoor temperature's effect after using this subassembly as building curtain.

The above is that the preferred embodiment of the present invention is only used for explaining the present invention, and is not used for limiting the present invention. All obvious changes or variations led by the technical proposal of the utility model are still within the protection scope of the utility model.

Claims

1. A color-changeable photovoltaic curtain wall assembly, characterized in that the photovoltaic curtain wall assembly comprises: the solar cell comprises front glass (1), a front packaging adhesive film (2), a cell layer (3), a back packaging adhesive film (4) and back glass (5) which are sequentially stacked; the front glass (1) is provided with a photochromic/thermochromic coating layer (1-1), and the photochromic/thermochromic coating layer (1-1) is arranged between the front glass (1) and the front packaging adhesive film (2); a composite coating layer (4-1) is arranged on the back packaging adhesive film (4), and the composite coating layer (4-1) is arranged between the back packaging adhesive film (4) and the battery layer (3); when the photochromic/thermochromic coating layer (1-1) is illuminated, the color of the photochromic/thermochromic coating layer is gradually changed from dark color to transparent; when the composite coating layer (4-1) is illuminated, the color of the composite coating layer gradually changes from transparent to high-reflection color.

2. A variable colour photovoltaic curtain wall module as claimed in claim 1, characterised in that the photo/thermochromic coating (1-1) is normally dark in colour to enhance the appearance of the module; when the light source is illuminated or the temperature is increased, the light transmittance is improved, and the light source is used for increasing the power of the component.

3. A variable colour photovoltaic curtain wall assembly as claimed in claim 2, wherein the light transmittance of the photo/thermochromic coating (1-1) is not more than 50% in the normal state and is not more than 95% when exposed to light or increased temperature.

4. A variable colour photovoltaic curtain wall assembly as claimed in claim 1, characterised in that the thickness of the photo/thermochromic coating (1-1) is set between 10 and 40 μm.

5. A variable colour photovoltaic curtain wall assembly as claimed in claim 1, wherein the composite coating (4-1) is a composite layer of photo-and/or thermo-induced materials.

6. A variable colour photovoltaic curtain wall assembly as claimed in claim 5, wherein the temperature of discolouration of the thermotropic material in the composite layer of said photoinduced or/and thermotropic material is greater than 50 ℃.

7. A variable colour photovoltaic curtain wall assembly as claimed in claim 5, wherein the thickness of the thermally induced material in the composite layer of optically or/and thermally induced material is set to be 5-30 μm.

8. The color-changeable photovoltaic curtain wall assembly as claimed in claim 1 or 5, wherein the composite coating layer (4-1) is transparent in a normal state, and gradually changes from transparent to high-reflection color when being exposed to light or temperature rise, so as to reflect sunlight and achieve the effects of shading and reflecting.

9. A variable colour photovoltaic curtain wall assembly as claimed in claim 1 or 5, characterised in that the composite coating (4-1) is provided as a grid structure corresponding to the positions of the gaps between the cells in the cell layer (3) and the periphery of the assembly.