TWI704762B - Manufacturing method/structure of solar photovoltaic module structure with elastic- transparent protective layer and solar photovoltaic cell structure thereof - Google Patents

Abstract

The present invention provides a manufacturing method/structure of solar photovoltaic module structure with elastic- transparent protective layer and solar photovoltaic cell structure thereof, comprising: providing a plurality of solar photovoltaic panels; forming a plurality of buffer-protection layers that make an elastic-light-transmissive material onto the positive electrode surface and/or the negative electrode surface of the non-string area; and forming string module that electrically connects the string soldering module to the string solder joints. Through the implementation of the invention, It can achieve the effect of increasing the vibration protection of solar photovoltaic modules and solar photovoltaic cells.

Description

Manufacturing method/structure of solar photovoltaic module structure with elastic light-transmitting protective layer and solar photovoltaic cell structure

The present invention is a manufacturing method/structure of a solar photovoltaic module structure with an elastic light-transmitting protective layer and its solar photovoltaic cell structure, particularly a solar energy with an elastic light-transmitting protective layer used in outdoor solar photovoltaic panels The manufacturing method/structure of the photovoltaic module structure and its solar photovoltaic cell structure.

Due to the frequent fluctuations in oil supply and the rising awareness of environmental protection, people have turned their attention to renewable energy, hoping to change the energy structure of human beings. Solar energy can be converted into electrical energy through a conversion device and then connected in parallel with the city electricity. , So that solar power can get the best application.

Solar cell is a kind of solar photovoltaic cell structure. Solar photovoltaic cells are divided into silicon-based semiconductor cells, CdTe thin-film cells, CIGS thin-film cells, Dye-sensitized thin film batteries, organic material batteries, etc. Regardless of the type of solar photovoltaic cell, because of the material, it is easy to break due to collision or vibration.

The problem that solar photovoltaic cells are easily broken, whether in the production process, packaging, storage, transportation after production, or installation and use, will seriously affect the yield of the process, the cost of manufacturing and maintenance. Therefore, how to design solar photovoltaic modules and solar photovoltaic cells that can withstand earthquakes has become an important issue in the solar energy industry.

The present invention is a manufacturing method/structure of a solar photovoltaic module structure with an elastic light-transmitting protective layer and a solar photovoltaic cell structure. It is mainly to solve the problem that solar photovoltaic equipment is easily broken due to collision or vibration.

The present invention provides a method for manufacturing a solar photovoltaic module structure with an elastic light-transmitting protective layer, which includes: providing a plurality of solar photovoltaic panels, each solar photovoltaic panel having a positive side and a negative side, and a positive side and a negative side A plurality of series welding points are respectively provided; a plurality of buffer protection layers are formed, which attach an elastic light-transmitting material to the positive electrode surfaces and/or the areas where the negative electrode surfaces are not the series welding points; and form series welding The module is formed by forming the series welding module on the positive side and/or the negative side and electrically connecting the series welding points.

The present invention also provides a solar photovoltaic module structure with an elastic light-transmitting protective layer, which includes: a plurality of solar photovoltaic panels, each solar photovoltaic panel is provided with a plurality of string welding points on a positive side and a negative side; A buffer protection layer, which is an elastic light-transmitting material attached to the positive electrodes and/or the areas where the negative electrodes are not the series welding points; and a series welding module, which is formed on the positive electrodes and /Or the negative faces are electrically connected to the series welding points.

The present invention also provides a solar photovoltaic cell structure with a buffer protection layer, which includes: a solar photovoltaic panel having a positive electrode surface and a negative electrode surface, and respectively provided with a plurality of string welding points; and at least one buffer protection layer , It is an elastic light-transmitting material and is attached to the positive electrode surface and/or the negative electrode surface, not the area of the series of welding points.

Through the implementation of the present invention, at least the following advanced effects can be achieved:

1. It can effectively improve the shock resistance of solar photovoltaic modules and solar photovoltaic cells.

2. It can reduce the production cost of solar photovoltaic modules and solar photovoltaic cells.

3. It can make the application environment of solar photovoltaic modules and solar photovoltaic cells more extensive.

In order for anyone familiar with the relevant art to understand the technical content of the present invention and implement it accordingly, and according to the content disclosed in this specification, the scope of patent application and the drawings, anyone familiar with the relevant art can easily understand the related purposes and advantages of the present invention Therefore, the detailed features and advantages of the present invention will be described in detail in the embodiments.

S100: Manufacturing method of solar photovoltaic module structure with elastic transparent protective layer

S10: Provide multiple solar photovoltaic panels

S20: Form a plurality of buffer protection layers

S30: Form a string welding module

10: Solar photovoltaic panels

101: first surface

102: second surface

20: Buffer protection layer

100: Solar photovoltaic module with elastic transparent protective layer

110: Solar photovoltaic cell structure with buffer protection layer

111: String welding point

210: Elastic transparent material

30: Serial welding module

310: Flexible serial board

311: Translucent board

312: Wire Group

12a: Wire

313: Adhesive layer

314: conductive end plate

[Figure 1] is a diagram of an embodiment of the manufacturing method of a solar photovoltaic module structure with a flexible light-transmitting protective layer of the present invention; [Figure 2A] is a three-dimensional implementation of a solar photovoltaic cell with a buffer protective layer of the present invention Example diagram; [Figure 2B] is a cross-sectional embodiment diagram of a solar photovoltaic cell with a buffer protective layer of the present invention; [Figure 3] is an implementation of a solar photovoltaic module with an elastic light-transmitting protective layer of the present invention Example diagram; [Figure 4A] is a diagram of an embodiment of a flexible tandem board of the present invention; [Figure 4B] is an embodiment diagram of a flexible tandem board with an adhesive layer of the present invention; [Figure 5A] is a flexible tandem board and a solar photovoltaic cell with a buffer protection layer of the present invention Three-dimensional embodiment diagram; and [Figure 5B] is a cross-sectional embodiment diagram of a flexible tandem board and a solar photovoltaic cell with a buffer protection layer of the present invention.

As shown in Figure 1, it is an embodiment of a method (S100) for manufacturing a solar photovoltaic module structure with a flexible light-transmitting protective layer, which includes: providing a plurality of solar photovoltaic panels (S10); forming a plurality of buffer protective layers (S20); and forming a string welding module (S30).

As shown in FIG. 2A and FIG. 2B, it is an embodiment of a solar photovoltaic cell structure 110 with a buffer protection layer, which includes: a solar photovoltaic panel 10; and at least one buffer protection layer 20.

As shown in Figures 2B and 3, it is a structural embodiment of a solar photovoltaic module 100 with an elastic light-transmitting protective layer, which includes: a plurality of solar photovoltaic panels 10; a plurality of buffer protective layers 20; and a string Welding module 30.

Provide multiple solar photovoltaic panels (S10). The solar photovoltaic panels 10 are components that can directly convert light energy into electrical energy after being irradiated by sunlight. Each solar photovoltaic panel 10 has a first surface 101 and a second surface 102 , Each has a positive side and a negative side, and the positive side and the negative side are respectively provided with a plurality of string welding points 111.

In order to effectively output the electrical energy of the solar photovoltaic panel 10, each positive side and negative side will form a contact point for outputting electrical energy. The solar power generation module can be formed effectively through series or parallel connection, so these contacts are used as series welding points 111.

A plurality of buffer protection layers are formed (S20), which is by attaching an elastic light-transmitting material 210 to the positive and/or negative surfaces, which is mainly formed as a light-transmitting material by the elastic light-transmitting material 210 Therefore, it will not affect the light absorption of the solar photovoltaic panel 10, so it will not affect the power generation of the solar photovoltaic panel 10.

The elastic light-transmitting material 210 has elasticity. When a large area is covered on the solar photovoltaic panel 10, it can produce shock absorption effect, thereby effectively protecting the solar photovoltaic panel 10, but when installed, it does not affect the power output of the solar photovoltaic panel 10 Therefore, the buffer protection layer 20 is disposed in areas other than the series of welding points 111.

The above-mentioned elastic light-transmitting material 210 can be a silicon gel, a nano-photonic crystal, a photocurable or a thermally cured material. During production, the above-mentioned elastic light-transmitting material 210 can be formed on the positive electrode surface and/or the negative electrode surface by inkjet printing, mold molding, or nanoimprinting.

In addition, the buffer protection layer 20 can be a multi-layer stack structure, that is to say, it is cured once after each layer is manufactured during manufacturing; the buffer protection layer 20 after curing will be more supportive, so it can be buffered again. The layer 20 is made and then cured again. In this way, the thickness of the buffer protection layer 20 can be adjusted, and a multilayer stack structure can be formed.

After the solar photovoltaic panel 10 has completed the buffer protection layer 20 on its positive side and/or negative side, the solar photovoltaic cell structure 110 with the buffer protection layer has been completed. At this time, if a solar module is further formed, the solar photovoltaic cell structure 110 with a buffer protection layer must be electrically connected in series or in parallel.

Forming the series welding module (S30) is to electrically connect the solar photovoltaic cell structure 110 with a buffer protection layer in series or in parallel. The series welding module 30 is formed on the The positive side and/or the negative side are electrically connected to the series welding point 111 to form a series or parallel structure.

As shown in Figures 4A and 4B, the above-mentioned series soldering module 30 can be a series soldering tape, a tinned copper tape, or a flexible series connection board 310; the flexible series connection board 310 includes ：A light-transmitting board 311; a plurality of wire groups 312; and an adhesive layer 313 may be further provided.

The light-transmitting plate 311 is a light-transmitting material and can let the sun's rays penetrate. The light-transmitting plate 311 has an outer surface and a bonding surface, wherein the outer surface is a light-receiving surface, and the bonding surface is used for bonding to the positive or negative side. In addition to a flexible light-transmitting plate 311, the light-transmitting plate 311 can also be a light-transmitting plastic film, such as an EVA (polyethylene vinyl acetate) plastic film.

In order to provide protection against wear and tear caused by environmental climate change, ensure the service life of the solar photovoltaic panel 10, and improve the power generation efficiency of the solar photovoltaic panel 10, the light-transmitting plate 311 can be an EVA plastic film, which is non-sticky at room temperature. According to its anti-adhesive properties, the EVA plastic film undergoes fusion bonding and bonding and solidification after the encapsulation process of the solar photovoltaic panel 10 undergoes hot pressing under certain conditions. It is a thermally cured hot melt adhesive film, and the cured EVA plastic film becomes The EVA plastic film after curing can withstand atmospheric changes and is elastic, and the solar photovoltaic panel 10 is encapsulated.

A plurality of wire groups 312 are formed on the light-transmitting plate 311, which are formed on the bonding surface side by side, and any wire group 312 may have a plurality of wires 12a. During production, the wires 12a can be grown on the flexible serial board 310 in a low-temperature growth manner.

Adhesive layer 313, some light-transmitting plates 311 that are not inherently adhesive, may further form an adhesive layer 313 on the bonding surface of the light-transmitting plate 311, but in order not to affect the function of the wire group 312, the adhesive The layer 313 is formed at a portion not covering the wire group 312.

In order to form a complete circuit, the flexible series connection board 310 may further have at least one conductive end plate 314, which is arranged on the flexible series connection board 310 and does not cover the position of the solar photovoltaic panel 10, and the conductive end plate 314 is electrically connected to the wire groups 312. With the conductive end plate 314, the two encapsulated solar photovoltaic panels 10 can be electrically connected in series/parallel.

The flexible series connection plate 310 is used for series connection. The flexible series connection plate 310 to be attached to the positive electrode or the negative electrode is respectively attached to the positive side and the negative side of each solar photovoltaic panel 10. When bonding, each wire group 312 and each series of welding points 111 are electrically connected to each other in a one-to-one manner. In some manufacturing processes, the flexible series connection plate 310 can be used on the positive side or the negative side for electrical series connection, but on the other electrode side, other series technology can be used for the electrical series connection of the solar photovoltaic panel 10 .

As shown in FIGS. 5A and 5B, when connecting in series, since any wire group 312 of the light-transmitting plate 311 is formed with a plurality of wires 12a, the slim structure of the wires 12a can not affect the light-transmitting plate 311 Ductility, and when the light-transmitting plate 311 can be a flexible light-transmitting plate or a light-transmitting adhesive film, when the light-transmitting plate 311 covers the uneven surface formed by the string welding points 111 on the solar photovoltaic panel 10, when When the light-transmitting plate 311 is applied outward on both sides of the convex surface of the series welding point 111, the wire group 312 and the series welding point 111 can be electrically connected tightly. Therefore, the wire group 312 and the series welding point 111 can be connected to each other. Welding can also be done without welding. If we do not weld, not only the process can be reduced, but also the cost can be reduced.

However, the above embodiments are used to illustrate the characteristics of the present invention, and the purpose is to familiarize yourself with Those skilled in the art can understand the content of the present invention and implement it accordingly, rather than limiting the scope of the invention’s patent. Therefore, any other equivalent modifications or amendments completed without departing from the spirit of the present invention should still be included in the following The scope of patent application.

S100: Manufacturing method of solar photovoltaic module structure with elastic transparent protective layer

S10: Provide multiple solar photovoltaic panels

S20: Form a plurality of buffer protection layers

S30: Form a string welding module

Claims (10)

A method for manufacturing a solar photovoltaic module structure with an elastic light-transmitting protective layer, which includes: providing a plurality of solar photovoltaic panels, each of which has a plurality of string welding points on a positive side and a negative side of the solar photovoltaic panel; Wherein the positive surface is set on the first surface of the solar photovoltaic panel, and the negative surface is set on the second surface of the solar photovoltaic panel; a plurality of buffer protection layers are formed, which attach an elastic light-transmitting material to the positive electrodes And/or the areas where the negative faces are not the series welding points; and forming a series welding module, which forms the series welding module on the positive faces and/or the negative faces and electrically connects them String welding points. According to the manufacturing method described in claim 1, wherein the elastic light-transmitting material is formed on the positive electrode surface and/or the negative electrode surface by inkjet printing, mold molding, or nanoimprinting. According to the manufacturing method described in item 1 of the scope of patent application, the elastic light-transmitting material is a silicon gel, a nanophotonic crystal, a photocurable, or a thermally cured material. According to the manufacturing method described in claim 1, wherein the buffer protection layers are a multilayer stacked structure. A solar photovoltaic module structure with an elastic light-transmitting protective layer, comprising: a plurality of solar photovoltaic panels, each of which has a positive side and a negative side respectively provided with a plurality of string welding points, wherein the positive side Set on the first surface of the solar photovoltaic panel, and the negative side is set on the second surface of the solar photovoltaic panel; a plurality of buffer protection layers, which are an elastic transparent material attached to the positive sides and/or the The negative electrode surface is not the area of the series welding points; and A series welding module is formed on the positive side and/or the negative side and electrically connected to the series welding points. For the solar photovoltaic module structure described in item 5 of the scope of patent application, the buffer protection layers are respectively a silicon gel, a nanophotonic crystal, a light-cured, or a thermally cured elastic light-transmitting structure. In the solar photovoltaic module structure described in item 5 of the scope of patent application, the buffer protection layers are each a multilayer stacked structure. A solar photovoltaic cell structure with a buffer protection layer, comprising: a solar photovoltaic panel having a positive electrode surface and a negative electrode surface, and respectively provided with a plurality of string welding points, wherein the positive electrode surface is provided on the solar photovoltaic panel The first surface, and the negative surface is set on the second surface of the solar photovoltaic panel; and at least one buffer protection layer, which is an elastic light-transmitting material and attached to the positive surface and/or the negative surface. The area of the string welding point. According to the solar photovoltaic cell structure described in item 8 of the scope of patent application, the buffer protection layer is a silicon gel, a nanometerized photonic crystal, a light-cured or a thermally cured elastic light-transmitting structure. In the solar photovoltaic cell structure described in item 8 of the scope of patent application, the buffer protection layers are a multilayer stacked structure.

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