TWI705578B - Stringing-bonding solar cell packaging structure / manufacturing method and structure of stringing plate thereof - Google Patents

Abstract

The present invention provides a stringing-bonding solar cell packaging structure / manufacturing method and structure of stringing plate thereof, which include: providing at least one solar cell having a plurality of electrode sets; providing at least one stringing plate having a plurality of conducting wire sets; and stringing connecting which is bonding a stringing plate onto a solar cell and making each electrode sets be electrically connected to each other conducting wire sets. By the implementation of the present invention, a large number of devices can be simplified, the manufacturing process can be simplified, the cost can be reduced, the production capacity can be increased and the Distributed Factory can be achieved.

Description

Adhesive series connection solar panel packaging structure/manufacturing method and series connection board structure

The present invention relates to a laminated solar panel packaging structure/manufacturing method and its series connection board structure, particularly a manufacturing method/structure and its series connection board structure for outdoor solar power generation.

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. The unique advantages of solar energy have become the focus of attention, because solar energy can be transformed by conversion devices. Thermal energy is converted into electrical energy. When the conversion device is irradiated by solar energy, a large number of free electrons are generated along with it, and the electrical energy generated when there is sunlight is stored first to provide the energy required when there is no sunlight.

As shown in Figure 1, please refer to Table 1 below

Table 1 is a comparison table of the production line configuration of two conventional solar power plants. From the above Figure 1 and Table 1, it can be seen that a solar production line will occupy a space equivalent to 20 meters long, and requires about 17 workers, and Excluding factory buildings, the construction cost of simple production equipment is about tens of millions to hundreds of millions of yuan. The above total factors have caused the production cost of solar panels to remain high, and therefore it is difficult to widely popularize.

As shown in Figure 2, the conventional solar panel is a solar cell (solar cell) is first stringed (Stringing), and then connected to use EVA (Ethylene-Vinyl Acetate), which is polyethylene vinyl acetate P110 It is packaged, and then re-packaged with a backsheet P120 that can effectively block moisture and other substances and has good weather resistance and a glass P130 that has high light transmittance and low iron to avoid loss of light performance. Therefore, the process is very It is complicated, and the equipment and costs to be used are also very high.

The present invention is a laminated solar panel encapsulation structure/manufacturing method and its cascaded panel structure. It mainly solves the need for a large number of expensive equipment, complicated manufacturing processes, high reduction in productivity, and poor yield when solar panel packaging. The problem of Jiahe’s inability to build factories decentrally.

The present invention provides a method for manufacturing a laminated solar panel encapsulation structure connected in series, which includes: providing at least one solar panel with a plurality of electrode groups parallel to each other on the surface; and providing at least one series connection panel made of light-transmitting material , Each series connection board is formed with a plurality of wire groups parallel to each other; and for series connection, the series connection board is attached to the solar panel, and each wire group and each electrode group are made one by one The electrodes are electrically connected to each other.

The present invention also provides a laminated solar panel encapsulation structure connected in series, which includes: at least one solar panel with a plurality of electrode groups parallel to each other on the surface; and at least one series connection board, which is made of light-transmitting material, each A plurality of wire groups parallel to each other are formed on the series connection board; wherein the series connection board is attached to the solar panel and electrically connects the electrodes of each wire group and each electrode group one to one.

The present invention also provides a series connection board structure for solar panel packaging, which includes: a light-transmitting board having an outer surface and a bonding surface; a plurality of wire groups are formed on the bonding surface in parallel; And an adhesive layer, which is formed on the bonding surface.

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

1. It can greatly simplify the production process and greatly reduce the use of equipment.

2. It can greatly reduce the technical threshold and cost of production and increase the capacity and yield of mass production.

3. Due to the simplification of equipment and manufacturing process, the construction of a mobile production plant can be achieved.

P110: Polyvinyl acetate

P120: Backplane

P130: Glass

S100: Manufacturing method of laminated solar panel packaging structure

S110: Provide at least one solar panel

S120: Provide at least one serial board

S130: Connect in series

100: Laminated series solar panel packaging structure

200: One-dimensional array of solar panel packaging structure

300: Two-dimensional array of solar panel packaging structure

10: Solar panel

110: Electrode group

111: Electrode

20: serial board

210: Wire Group

211: Wire

220: Translucent board

230: Adhesive layer

240: conductive end plate

[Fig. 1] is a flow chart of a conventional solar panel production line; [Fig. 2] is a cross-sectional view of a conventional solar panel package structure after series welding; [Fig. 3] is a laminated series connection of the present invention The manufacturing process embodiment diagram of the manufacturing method of the solar panel encapsulation structure; [Figure 4A] is an exploded embodiment diagram of a series connection board and the positive electrode surface of the solar panel of the present invention; [Figure 41] is a wire of the present invention Partial enlarged view of the group; [FIG. 4B] is an exploded embodiment view of a tandem panel and the negative electrode surface of a solar panel according to the present invention; [Figure 4C] is an embodiment diagram of the solar panel positive electrode surface and the negative electrode surface of the present invention combined with a series connection plate; [Figure 5] is a transparent plate of the present invention on both sides of the convex surface of the electrode [Figure 6] is an embodiment diagram of a solar panel packaging structure of a one-dimensional array of the present invention; and [Figure 7] is an embodiment of a solar panel packaging structure of a two-dimensional array of the present invention Figure.

As shown in Fig. 3, this embodiment first provides a method S100 for manufacturing a laminated solar panel encapsulation structure connected in series, which includes the following steps: providing at least one solar panel S110; providing at least one serial panel S120; and Connect S130 in series.

As shown in FIGS. 4A to 4C, by implementing the above-mentioned manufacturing method S100, a laminated solar panel encapsulation structure 100 can be formed, which includes: at least one solar panel (cell) 10; and at least A series connection board 20; wherein the series connection board 20 is attached to the solar panel 10, and each wire group 210 on the series connection board 20 and each electrode group 110 on the solar panel 10 are mutually electrically connected. Sexual connection.

The above-mentioned manufacturing method S100 and the components of the solar panel packaging structure 100 are further described as follows: at least one solar panel S110 is provided, and the solar panel 10 is a semiconductor substrate capable of solar photovoltaic conversion. In order to output power, the first surface of the solar panel 10 is formed with an electrode group 110 having a plurality of positive electrodes parallel to each other; and on the second surface of the solar panel 10, an electrode group 110 having a plurality of negative electrodes parallel to each other is formed ; Electrode group of any of the above positive electrodes 110 or any negative electrode electrode group 110 respectively has a plurality of electrodes (pads) 111 to facilitate the output of the electricity generated by the solar panel 10.

At least one series connection board S120 is provided. By using the series connection board 20, the solar panel 10 can be packaged and electrically connected. The series connection board 20 includes: a light-transmitting board 220; a plurality of wire groups 210; and an adhesive layer 230 may be further provided.

The light-transmitting plate 220 is a non-thermal curing element made of light-transmitting material and can let the sun's rays penetrate. The light-transmitting plate 220 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 first surface or the second surface. In addition to a flexible light-transmitting plate 220, the light-transmitting plate 220 may also be a light-transmitting plastic film, such as an EVA plastic film.

In order to provide protection against wear and tear caused by environmental and climate changes, to ensure the service life of the solar panel 10, and to improve the power generation efficiency of the solar panel 10, the light-transmitting plate 220 can be an EVA plastic film, which is non-sticky and at room temperature. According to the anti-sticking property, after the solar panel 10 is encapsulated under certain conditions, the EVA plastic film will undergo fusion bonding and glue-linked curing, which is a thermally cured hot melt adhesive film, and the cured EVA plastic film becomes completely transparent. , Has a very high light transmittance, and the cured EVA plastic film can withstand atmospheric changes and is flexible, and the solar panel 10 is encapsulated.

A plurality of wire groups 210 are formed on the light-transmitting plate 220, which are formed on the bonding surface side by side, and any wire group 210 may have a plurality of wires 211. During production, the wires 211 can be produced on the serial board 20 in a low-temperature growth manner.

Adhesive layer 230, some light-transmitting plates 220 that are not inherently adhesive, may further form an adhesive layer 230 on the bonding surface of the light-transmitting plate 220, but in order not to affect the function of the wire assembly 210, the adhesive The layer 230 is formed at a portion not covering the wire group 210.

In order to form a complete circuit, the series connection board 20 may further have at least one conductive end plate 240, which is arranged on the series connection board 20 and does not cover the position of the solar panel 10, and the conductive end plate 240 is connected to the wire groups 210 electrical connection. With the conductive end plate 240, the two encapsulated solar panels 10 can be electrically connected in series/parallel.

Carry out the series connection S130, which is to stick the series connection board 20 for bonding the positive electrode or the negative electrode to the first surface and the second surface of each solar panel 10, respectively. When bonding, each wire group 210 and all the electrodes 111 of each electrode group 110 are electrically connected to each other in a one-to-one manner. In some manufacturing processes, the serial board 20 can be used on the first surface for electrical serial connection, but on the second surface, other stringing technologies are used for electrical serial connection of the solar panels 10.

As shown in Figure 5, when connecting in series, since any wire group 210 of the light-transmitting plate 220 is formed with a plurality of wires 211, the slim structure of the wires 211 can not affect the ductility of the light-transmitting plate 220, and When the light-transmitting plate 220 can be a flexible light-transmitting plate or a light-transmitting adhesive film, when the light-transmitting plate 220 covers the uneven surface formed by the electrode 111 on the solar panel 10, when the light-transmitting plate 220 is on the electrode 111 When force is applied to both sides of the convex surface, the wire group 210 and the electrode group 110 can be electrically connected tightly. Therefore, the wire group 210 and the electrode group 110 can be welded or not welded. Not only can the process be reduced, but also the cost can be reduced.

As shown in Figures 6 to 7, through the various implementations described above, each solar panel 10 can be connected in series to form a one-dimensional array of solar panel packaging structure 200. In addition, After multiple groups of solar panels 10 are connected in series, they are arranged again to form a two-dimensional array of solar panel packaging structure 300.

Through the implementation of this embodiment, the following comparison table 2 can be obtained:

From the comparison table 2 above, it can be clearly understood that this implementation has obvious improvement features and effects regardless of equipment simplification, process simplification, cost reduction, and productivity improvement...etc.

In addition, because this implementation greatly reduces the equipment scale and greatly simplifies the manufacturing process, it is possible to put the solar panel 10 production line in a container and achieve the efficiency of a mobile factory, so that the entire plant can be output quickly, and therefore can be Make the application of solar energy more popular and the earth more environmentally friendly.

However, the above-mentioned embodiments are used to illustrate the characteristics of this creation, and their purpose is to enable those who are familiar with the technology to understand the content of this creation and implement them accordingly, rather than limiting the scope of patents of this creation, so everything else does not depart from this creation. The equivalent modification or modification completed by the spirit of the disclosure should still be included in the scope of patent application described below.

S100‧‧‧The manufacturing method of the solar panel encapsulation structure connected in series

S110‧‧‧ Provide at least one solar panel

S120‧‧‧Provide at least one serial board

S130‧‧‧for serial connection

Claims (8)

A method for manufacturing a laminated solar panel encapsulation structure connected in series, comprising: providing a plurality of solar panels, each solar panel has an electrode group with a plurality of positive electrodes parallel to each other on the first surface, and each solar panel The second surface of the board has an electrode group with a plurality of negative electrodes parallel to each other; at least one set of serial connection boards are provided, and each serial connection board has: a light-transmitting board, which is a light-transmitting material and has an outer surface and a The bonding surface, the light-transmitting plate is a flexible light-transmitting plate; and a plurality of wire groups are formed on the bonding surface side by side, and any one of the wire groups has a plurality of wires; and the series connection is The bonding surfaces of the series connection board are respectively bonded to the first surface and the second surface of each solar panel, and the plural wires of each wire group are connected to each The electrodes of the electrode group are electrically connected to each other. According to the manufacturing method of the solar panel packaging structure described in claim 1, wherein the wires are grown on the series board in a low-temperature growth method. For example, the manufacturing method of the solar panel encapsulation structure described in claim 1 or 2 of the scope of the patent application, which further has a plurality of conductive end plates, and each of the conductive end plates is arranged on a serial board and does not cover the solar panel And each of the conductive end plates is electrically connected with the wire groups. A bonding type series connection solar panel packaging structure, which has: A plurality of solar panels, each solar panel has an electrode group with a plurality of positive electrodes juxtaposed on its first surface, and an electrode group with a plurality of negative electrodes juxtaposed on its second surface; and at least A set of tandem boards, each of the tandem boards has: a light-transmitting board, which is a light-transmitting material and has an outer surface and a bonding surface, the light-transmitting board is a flexible light-transmitting board; and The wire groups are formed on the bonding surface side by side, and any one of the wire groups has a plurality of wires; wherein the bonding surface of the series connection board is respectively bonded to the first surface and the first surface of the solar panel On the two surfaces, the plurality of wires of each wire group and the electrodes of each electrode group are electrically connected to each other one to one. For example, the solar panel packaging structure described in claim 4 of the scope of patent application further has at least one conductive end plate, which is arranged on the series connection plate and is electrically connected to the wire groups. A tandem board structure for solar panel packaging, which has: a light-transmitting board, which is made of light-transmitting material and has an outer surface and a bonding surface, the light-transmitting board is a flexible light-transmitting board; and a plurality of The wire group is formed on the bonding surface side by side, and any one of the wire groups has a plurality of wires. For example, the series connection board structure described in claim 6 of the scope of patent application further has at least one conductive end plate, which is disposed on the series connection board and is electrically connected to the wire groups. In the tandem board structure described in claim 6 of the scope of patent application, an adhesive layer is further formed on the bonding surface of the light-transmitting board, and the adhesive layer is formed at a position that does not cover the plurality of wire groups.

Images