TWI587533B - Colorful solar power module and manufacturing method thereof - Google Patents

Description

Color solar module and manufacturing method thereof

The present invention relates to techniques for directly converting into electrical energy using optical radiation, and more particularly to solar energy technology integrated with buildings.

In recent years, in order to adapt to the more demanding demands of the solar energy market, while continuously improving the efficiency of component conversion, the appearance is more humanized and more suitable for the environment. A large number of solar power stations are under construction, and the integration of solar energy with buildings and the environment is becoming more and more mature. This requires more color components to meet the aesthetic requirements. In particular, the demand for color components is more urgent in the integration of solar energy with buildings and the environment. For solar energy products as building materials, people hope to choose their own colors to dress up their own buildings and highlight the personality of the building.

In the prior art, Chinese Patent No. CN01815233.3 discloses a solar cell unit comprising a back electrode, a light-emitting layer, and an optional front electrode. Part of the surface of the solar cell unit does not generate any energy, the solar cell unit is characterized in that a color material is present on at least a portion of the solar cell unit where no energy is generated, and at least a portion of the energy generating portion of the solar cell unit has no color material, The color of the color material is selected to be different from the color of the light generating portion of the solar cell unit.

In the prior art, the Chinese patent CN200920318921.7 discloses an amorphous tantalum thin film solar cell module, which is a color solar cell module for building which is fixed on glass or tempered glass by a color interlayer, and is characterized by Crystal solar battery Piece, color laminated layer, glass or tempered glass constitutes a whole photovoltaic curtain wall member, amorphous germanium thin film solar cell module is fixed on glass or tempered glass through color interlayer, and amorphous amorphous thin film solar cell module is composed of The combination of the sheets is formed with a gap, and the electrodes are connected by an aluminum foil amorphous germanium thin film solar cell module, the gap is filled with a transparent material, and the amorphous germanium thin film solar cell module is laminated between the two glass or tempered glass by color lamination. , packaged by two pieces of two pieces of glass or tempered glass.

In the prior art, the Chinese mainland patent CN201110225590.4 discloses a method for preparing a patterned color solar cell, the steps of which are: first preparing a screen corresponding to a desired pattern; and then screen printing the prepared screen The method is to print the corrosive paste on the color modulation layer of the color solar cell. The processing time is 10 seconds to 3600 seconds at a temperature of 0 ° C to 1000 ° C. The corroded solar cell is ultrasonically cleaned and pure water. A colored solar cell having a pattern is prepared by spraying one side of the patterned positive electrode and then drying.

In the prior art, the Chinese mainland patent CN201220432249.6 discloses a color solar module made of a color solar cell, including tempered glass, EVA, color solar cell, EVA, back plate arranged in order from top to bottom. The color solar cell is composed of a single color solar cell sheet containing two or more colors.

The object of the present invention is to provide a color solar module, which is relatively simple to manufacture, can display a more vivid and saturated color pattern, makes the color solar module more beautiful, and the color pattern has less damage to the luminous efficiency. The color solar module can be applied to advertising signs, building materials, art installations, etc., and has the function of generating electricity, thereby enhancing the additional application value of the solar module.

The invention firstly proposes a color solar module 1 comprising a solar energy The battery module 200 is combined with a color pattern layer 100. The color pattern layer 100 includes a white ink layer 110 and a multi-color ink layer 120 formed on the surface of the solar cell module 200. The multi-color ink layer 120 is formed on the surface of the white ink layer 110, and the white ink layer is formed. 110 includes a grid pattern formed by a plurality of white ink dots 111 regularly arranged, and a first light transmission gap 112 is formed between the white ink dots 111 for light to pass through, and the width of the first light transmission gap 112 is 0.002 mm ~ 0.015 mm.

The multi-color ink layer 120 includes a grid-like multi-color pattern formed by regularly arranging a plurality of colored ink dots 121 of a plurality of colors, and a second light-transmissive gap 122 is formed between the colored ink dots 121 for light to penetrate. The width of the second light transmission gap 122 is 0.002 mm to 0.015 mm.

Further, the present invention further provides a method for manufacturing a color solar module, comprising the following steps: S610: providing a solar cell module 200; S620: providing a color pattern conforming to the size of the solar cell module 200; S630: in solar energy The surface of the battery module 200 is printed with a white ink layer 110 by inkjet printing. The white ink layer 110 comprises a grid pattern formed by a plurality of white ink dots 111 regularly arranged, and each white ink dot 111 is formed. There is a first light-transmissive gap 112 for light to penetrate; S640: UV-curable white ink layer 110; S650: inkjet printing a multi-color ink layer 120 on the surface of the white ink layer 110, the multi-color ink layer 120 a grid-like multicolor pattern comprising a plurality of colored ink dots 121 regularly arranged in a plurality of colors, and a second light-transmissive gap 122 is formed between each of the colored ink dots 121 for light to penetrate; S660: The multicolor ink layer 120 is cured by UV, whereby a color pattern layer 100 is formed on the surface of the solar cell module 200.

The color solar module and the manufacturing method thereof provided by the invention are formed by UV inkjet printing on the surface of the solar cell module to form a color pattern layer, wherein the white ink layer is used to make the color of the color pattern more vivid and saturated. . The color pattern layer has a fine mesh shape, has a better preset light transmission gap, and has better light transmission effect, and has less damage to the luminous efficiency of the solar module.

The color solar module and the manufacturing method thereof provided by the invention can be applied to various solar cell modules, such as single crystal germanium, polycrystalline germanium, amorphous germanium, dye sensitization and the like, and have wide application fields.

1‧‧‧Color Solar Module

200‧‧‧Solar battery module

210‧‧‧Rough layer

100‧‧‧Color pattern layer

110‧‧‧White ink layer

111‧‧‧White dots

112‧‧‧First light transmission gap

113‧‧‧ Titanium dioxide particles

120‧‧‧Multicolor ink layer

121‧‧‧Colored dots

122‧‧‧Second light transmission gap

115‧‧‧First thickness

116‧‧‧second thickness

S610, S615, S620, S630, S640, S650, S660‧‧‧ Manufacturing steps

1 is a schematic view of a color solar module according to a first preferred embodiment of the present invention.

2 is a schematic view of a color ink dot and a second light transmission gap in a multicolor ink layer.

Figure 3 is a schematic illustration of a first thickness and a second thickness in a white ink layer.

4 is a flow chart of a method of fabricating a color solar module according to a second preferred embodiment of the present invention.

The present invention primarily discloses the use of a solar cell in which the electrochemical fundamentals of solar power generation are well known to those skilled in the relevant art and are not fully described in the following description. At the same time, the drawings referred to in the following text mainly represent the structural schematics related to the features of the present invention, and do not need to be completely drawn according to the actual size, which will be explained first.

Referring to FIG. 1, a first embodiment of the present invention is a color solar module 1, A solar cell module 200 and a color pattern layer 100 are included.

The color pattern layer 100 includes a white ink layer 110 and a multi-color ink layer 120 formed on the surface of the solar cell module 200, and a multi-color ink layer 120 formed on the surface of the white ink layer 110. The solar cell module 200 is a solar cell that has been packaged, and the surface layer thereof may be glass, polyethylene terephthalate (PET plastic), epoxy resin (EPOXY), or other light transmissive materials, etc. Set limits.

The white ink layer 110 plays a key role in the present invention as a substrate for a color pattern because the surface of the solar cell module which is generally packaged is dark blue or black, and it is not easy to form a vivid saturated color pattern on the surface thereof. If a color pattern is formed directly on the surface of a dark blue or black solar cell module, not only the ink is consumed, but also the visual effect of the color pattern is poor. The invention uses the white ink layer 110 as a substrate, on the one hand, changes the surface color of the solar cell module, and on the other hand, can be used as a reflecting surface of sunlight, thereby making the color pattern seen by the human eye more vivid and saturated.

However, the white ink layer 110 also blocks sunlight from entering the solar cell module 200. Therefore, the white ink layer 110 is substantially a grid-like pattern formed by regularly arranging a plurality of white ink dots 111, and the white ink dots 111. A first light-transmissive gap 112 is formed therebetween for light to pass through, as shown in FIG.

The first light-transmissive gap 112 is very important in the present invention. If the first light-transmissive gap 112 is absent in the white ink layer 110, the light is blocked by a large amount, and the white ink layer 110 cannot be effectively penetrated to reach the bottom solar cell. Module 200, this will seriously affect the luminous efficiency. Therefore, the white ink layer 110 is preferably fabricated by a digitally controlled ink jet printer having a UV hardening function, so that the width of the first light transmitting gap 112 can be precisely controlled.

The width of the first light transmission gap 112 must be properly set, considering solar power The wavelength of the light generated by the cell module 200 is mainly visible light, and the wavelength is 380 nm to 760 nm. Therefore, the first light transmission gap 112 is sufficient for the visible light to penetrate to allow the solar cell module 200 to generate electricity. Preferably, the width of the first light-transmissive gap 112 is from 0.002 mm to 0.015 mm, more preferably from 0.004 mm to 0.014 mm, by a plurality of experiments and tests. If it is too wide, although the light transmission effect is good, the effect as a pattern substrate is poor. If it is too narrow, the effect as a pattern substrate is good, but the light transmission effect is poor.

The line width of the white ink dots 111 between the respective first light-transmissive gaps 112 is also an important parameter, and the line width is too wide, and the effect as a pattern substrate is good, but the light-transmitting effect is poor; the line width is too narrow, and the light-transmitting effect is Ok, but the effect as a pattern substrate is poor. In the present invention, preferably, the line width of the white ink dots 111 is substantially equal to the width of the first light transmission gap 112.

The white ink layer 110 is preferably formed by digitally controlled ink jet printing so that the line width of the white ink dots 111 and the width of the first light transmitting gap 112 can be precisely controlled.

To control the line width of the white ink dot 111, two parameters can be operated: one, adjusting the amount of white ink; and adjusting the illuminance of the UV lamp. When the amount of ink is constant, the irradiance of the radiance is increased, and the white ink dot 111 on the surface of the solar cell module 200 is small, because the inkjet process produces an early curing phenomenon, and the white ink dot 111 does not fall on the surface of the solar cell module 200. A splash phenomenon occurs, and the formed white ink dots 111 are small. For example, when printing with a 720*720dpi UV inkjet printer, 720*720dpi means 518400 points in a square inch area, and the white ink layer 110 is normally formed to a thickness of 0.01 mm because the ink is in the inkjet column. The splashing loss occurs during the printing process, so the size of the generated white ink dot 111 is about 0.005 to 0.01 square millimeter, and the width of the first light transmitting gap 112 is 0.002 to 0.007 mm, so that the visible light having a wavelength of 380 to 760 nm can be easily Pass through. However, if higher solar energy efficiency is required, the amount of ink can be kept constant, and the irradiance can be increased to obtain a wider pitch, but the thickness of the white ink is increased. General UV inkjet printer unit time The amount of inkjet is fixed. When the thickness of the inkjet is increased from 0.01 mm to 0.015 mm, the width of the first light-transmitting gap 112 is increased by 50% to 0.004 to 0.014 mm, allowing more visible light to penetrate.

In this embodiment, the color pattern is mainly composed of the multi-color ink layer 120. 2, the multi-color ink layer 120 includes a grid-like multi-color pattern formed by regularly arranging a plurality of colored ink dots 121 of a plurality of colors, and a second light-transmissive gap 122 is formed between the colored ink dots 121. For the light to penetrate, the second light-transmissive gap 122 mainly functions to allow light to penetrate, so that the solar cell module 200 can perform its intended function. Preferably, the ink used in the multi-color ink layer 120 comprises a cyan ink, a red ink, a yellow ink, and a black ink, whereby the ink jet printing forms a grid-like multicolor pattern.

The width of the second light-transmissive gap 122 must be appropriately set. If it is too wide, although the light-transmitting effect is good, the effect as a color pattern is poor. If it is too narrow, the effect as a color pattern is good, but the light transmission effect is poor. Considering the width of the first light-transmissive gap 112 of the white ink layer 110, the width of the second light-transmissive gap 122 is preferably from 0.002 mm to 0.015 mm, more preferably from 0.004 mm to 0.014 mm, through multiple experiments and tests. . The line width of the colored ink dots 121 between the respective second light-transmissive gaps 122 is also an important parameter, and the line width is too wide, and the effect as a color pattern is good, but the light-transmitting effect is poor; the line width is too narrow, and the light-transmitting effect is good. However, the effect as a color pattern is poor. In the present invention, preferably, the line width of the colored ink dot 121 is substantially equal to the width of the second light transmitting gap 122.

The multi-color ink layer 120 is preferably formed by digitally controlled ink jet printing so that the width of the second light-transmissive gap 122 can be precisely controlled.

In consideration of the light transmission and the overall effect as a pattern substrate, in the present embodiment, the white ink layer 110 has a thickness of 0.01 mm to 0.015 mm.

According to the technical idea of the present invention, the color pattern layer 100 can also be formed into a pattern having a stereoscopic effect to make the pattern more vivid. The specific way of achieving this is to adjust the white ink layer 110 The thickness, as shown in FIG. 4, the white ink layer 110 includes a first thickness 115 and a second thickness 116, the first thickness 115 is 0.01 mm to 0.015 mm, and the second thickness 116 is thicker than the first thickness 115, and the second thickness is The position is the position where the three-dimensional convex effect is pre-set. The thicker the second thickness 116, the better the stereoscopic effect. Preferably, the present invention suggests that the second thickness 116 be at least twice the first thickness 115. After the white ink layer 110 is cured, a multi-color ink layer 120 is then formed on the surface of the white ink layer 110. At this time, the multi-color ink layer 120 may have a single thickness, and the upper portion of the white ink layer 110 is passed through. The two thicknesses 116, that is, the multi-color ink layer 120 at this position can be raised to form a stereoscopic effect.

The stereoscopic effect is formed by different heights of the white ink layer 110, and the amount of colored ink used is smaller, the manufacturing cost is lower, and the effect on the light transmission effect is smaller than that of directly forming the multi-color ink layer 120 of different thicknesses. . Because the colored ink dot 121 shields more light than the white ink dot 111, the influence on the luminous efficiency is greatly affected.

In this embodiment, preferably, the white ink layer 110 further comprises titanium dioxide particles 113, as shown in FIG. 1 and FIG. Titanium dioxide is an excellent photocatalyst that promotes the photoelectric conversion reaction. At the same time, the titanium dioxide particles 113 themselves appear white, mixed in the white ink layer 110, and do not change the color of the white ink; on the other hand, the titanium dioxide particles 113 themselves also have the effect of reflecting and scattering light, which can be shielded or absorbed by the ink. The light rays, which are reflected or scattered outward, pass through the white ink layer 110 to reach the underlying solar cell module 200, so that the luminous efficiency is less degraded.

Referring to FIG. 1 and FIG. 3, in order to print the white ink layer 110 on the surface of the solar cell module 200, such as glass, EPOXY, PET, light-transmitting material, etc., it is easier to adhere, have better reliability, and achieve For better light transmission, the surface of the solar cell module 200, preferably, has a rough layer 210, so that the white ink layer 110 is formed on the rough layer 210.

The rough layer 210 can use a sandpaper with a thickness of 800 mesh or more, in a solar cell The surface of the module 200, such as glass, EPOXY, PET, light-transmitting material, etc., is ground to form a rough layer 210; or sandblasted, sprayed on the surface of the solar cell module 200, EPOXY, PET, light-transmitting materials, etc. The surface is such that a rough layer 210 is formed. Whether using sanding paper or sand blasting, the particle size of the sand is preferably not more than 10 μm.

Referring to FIG. 4, the present invention further provides a second preferred embodiment, which is a method for manufacturing a color solar module, which is used to fabricate the color solar module in the first embodiment, and includes the following steps S610-S660:

S610: A solar cell module 200 is provided.

S620: According to the size of the surface area of the solar cell module 200, a color pattern conforming to the solar cell module 200 is provided.

S630: printing a white ink layer 110 on the surface of the solar cell module 200 by UV inkjet, the white ink layer 110 comprising a grid pattern formed by a plurality of white ink dots 111 regularly arranged, each white ink A first light-transmissive gap 112 is formed between the dots 111 for light to penetrate.

S640: The white ink layer 110 is cured by UV.

S650: printing a multi-color ink layer 120 on the surface of the white ink layer 110 by inkjet printing, and the multi-color ink layer 120 comprises a grid-like multicolor formed by regularly arranging a plurality of colored ink dots 121 of a plurality of colors. In the pattern, a second light-transmissive gap 122 is formed between each of the colored ink dots 121 for light to penetrate.

S660: The multicolor ink layer 120 is cured by UV, whereby a color pattern layer 100 is formed on the surface of the solar cell module 200.

In order to achieve better color pattern vividness and luminous efficiency, in the present embodiment, the width of the first light-transmissive gap 112 formed by steps S630 and S640 is 0.002 mm. 0.015 mm, more preferably 0.004 mm to 0.014 mm; preferably, the line width of the white ink dot 111 is substantially equal to the width of the first light transmission gap 112. The width of the second light-transmissive gap 122 formed by the steps S630 and S640 is 0.002 mm to 0.015 mm, more preferably 0.004 mm to 0.014 mm; preferably, the line width of the colored ink dot 121 is substantially equal to the second pass. The width of the light gap 122.

In this embodiment, preferably, if a planar color pattern layer 100 is to be formed, the thickness of the white ink layer 110 and the multi-color ink layer 120 are 0.01 mm to 0.015 mm, respectively.

In this embodiment, if the color pattern layer 100 having a three-dimensional convex effect is to be formed, in step S630, the white ink layer 110 includes a first thickness 115 and a second thickness 116, and the first thickness 115 is 0.01 mm to 0.015 mm. The second thickness 116 is at least twice that of the first thickness layer 115. The position where the second thickness is located is the position where the stereoscopic convex effect is preliminarily provided. Therefore, in step S640, the multi-color ink layer 120 may have a single thickness. By passing the higher second thickness 116 of the white ink layer 110, the multi-color ink layer 120 at the position may be raised. Form a three-dimensional effect.

In step S630 of the embodiment, the white ink layer 110 further comprises titanium dioxide particles 113, which is an excellent photocatalyst, which can promote the photoelectric conversion reaction; at the same time, the titanium dioxide particles 113 themselves appear white and are mixed in the white ink layer 110, It will change the color of the white ink; on the other hand, the particles themselves also have the effect of reflecting and scattering light, which can reflect or scatter the light that is originally blocked or absorbed by the ink, and pass through the white ink layer 110 to reach the bottom. The solar cell module 200 reduces the luminous efficiency.

In step S650 of the present embodiment, preferably, the multi-color ink layer 120 uses cyan ink, red ink, yellow ink, and black ink, thereby forming a grid-like multicolor pattern by ink jet printing.

In order to make the white ink layer 110 more easily adhere to the solar cell module 200 for better reliability, the embodiment may further include step S615, please continue to see FIG.

S615: Form a rough layer 210 on the surface of the solar cell module 200.

At this time, in step S630, the white ink layer 110 is inkjet printed on the surface of the rough layer 210 of the solar cell module 200.

In step S615, the rough layer 210 may be ground on the surface of the solar cell module 200 by using a matte paper having a thickness of 800 mesh or more, such as glass, EPOXY, PET, light transmissive material, etc., to form a rough layer 210; or using sandblasting. In a manner, the surface of the material such as glass, EPOXY, PET, or light-transmitting material on the surface of the solar cell module 200 is sprayed to form the rough layer 210. Whether using sanding paper or sand blasting, the particle size of the sand is preferably not more than 10 μm.

Through the above description, the advantages of the present invention are summarized as follows:

1. The color pattern layer 100 is directly formed on the solar cell module 200, which is relatively simple to manufacture and easier to mass-produce.

2. The color pattern layer 100 is composed of a multi-color ink layer 120 and a white ink layer 110 at the bottom thereof, and can eliminate the adverse effects of the dark blue or black surface of the solar cell module 200, and the color pattern is more saturated and vivid.

3. The multi-color ink layer 120 and the white ink layer 110 at the bottom thereof respectively have a suitable second light-transmissive gap 122 and a first light-transmissive gap 112, which can provide sufficient light-transmitting effect for the luminous efficiency of the solar cell module 200. The impact of impairment is small.

Fourth, the color solar module can have a saturated and vivid color pattern, and sufficient luminous efficiency to cope with actual use.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; the above description should be understood and understood by those skilled in the relevant art. Equivalent changes or modifications made without departing from the spirit of the invention are intended to be included in the scope of the claims.

1‧‧‧Color Solar Module

200‧‧‧Solar battery module

210‧‧‧Rough layer

100‧‧‧Color pattern layer

110‧‧‧White ink layer

111‧‧‧White dots

112‧‧‧First light transmission gap

113‧‧‧ Titanium dioxide particles

120‧‧‧Multicolor ink layer

Claims (10)

A color solar module (1) comprising a solar cell module (200) and a color pattern layer (100), wherein the color pattern layer (100) comprises a white ink layer (110) and a multi-color An ink layer (120); the white ink layer (110) is formed on a surface of the solar cell module (200), and the multicolor ink layer (120) is formed on a surface of the white ink layer (110), the white ink layer (110) comprising a grid pattern formed by a plurality of white ink dots (111) regularly arranged, and a first light transmission gap (112) is formed between the white ink dots (111) for light to penetrate. The first light-transmissive gap (112) has a width of 0.002 mm to 0.015 mm; the multi-color ink layer (120) comprises a grid-like plurality of colored ink dots (121) regularly arranged of a plurality of colors. a color pattern, a second light-transmissive gap (122) is formed between the colored ink dots (121) for light to pass through, and the second light-transmissive gap (122) has a width of 0.002 mm to 0.015 mm. The color solar module (1) according to claim 1, wherein the white ink layer (110) has a thickness of 0.01 mm to 0.015 mm. The color solar module (1) according to claim 1, wherein the white ink layer (110) comprises a first thickness (115) and a second thickness (116), and the first thickness (115) is 0.01 mm. 0.015 mm, the second thickness (116) is at least twice the first thickness (115). The color solar module (1) according to claim 1, wherein the white ink layer (110) comprises titanium dioxide particles (113), and the first light transmission gap (112) has a width of 0.004 mm to 0.014 mm. The width of the second light transmission gap (122) is 0.004 mm to 0.014 mm. The color solar module (1) according to any one of claims 1 to 4, wherein the surface of the solar cell module (200) further has a rough layer (210), and the white ink layer (110) is formed. On the rough layer (210). A method for manufacturing a color solar module, comprising the steps of: S610: providing a solar cell module (200); S620: providing a color pattern conforming to the size of the solar cell module (200); and S630: at the solar cell The surface of the module (200) prints a white ink layer (110) by UV inkjet, and the white ink layer (110) comprises a grid pattern formed by regularly arranging a plurality of white ink dots (111). a first light-transmissive gap (112) is formed between each of the white ink dots (111) for light to pass through; S640: the white ink layer (110) is cured by UV; and S650: in the white ink layer (110) The surface is printed with a multi-color ink layer (120) by inkjet printing. The multi-color ink layer (120) comprises a grid-like multicolor pattern formed by regularly arranging a plurality of colored ink dots (121) of a plurality of colors. a second light-transmissive gap (122) is formed between each of the colored ink dots (121) for light to penetrate; and S660: the multi-color ink layer (120) is cured by UV, whereby the solar cell module is The surface of (200) forms a color pattern layer (100). The method for manufacturing a color solar module according to claim 6, further comprising: S615: forming a rough layer (210) on a surface of the solar cell module (200); and S630: in the solar cell module (200) The surface of the rough layer (210) is printed with a layer of white ink (110) in a UV ink jet. The method of manufacturing a color solar module according to claim 6 or 7, wherein the first light transmission gap (112) has a width of 0.002 mm to 0.015 mm, and the second light transmission gap (122) has a width of 0.002. The thickness of the multi-color ink layer (120) is from 0.01 mm to 0.015 mm. The method of manufacturing a color solar module according to claim 8, wherein the white ink layer (110) comprises a first thickness (115) and a second thickness (116), and the first thickness (115) is 0.01 mm. 0.015 mm, the second thickness (116) is at least a first thickness layer (115) 2 times. The method of manufacturing a color solar module according to claim 8, wherein the white ink layer (110) comprises titanium oxide particles (113).