CN108198881A - Crystalline silicon solar cell module with snow melting function - Google Patents

Abstract

The invention discloses a crystalline silicon solar cell module with a snow melting function, which comprises a glass front plate, a first packaging layer, a solar cell, a second packaging layer and a back plate which are sequentially arranged from top to bottom, wherein a conductive structure connected with an external circuit structure is arranged on the inner surface and/or the outer surface of the glass front plate. The conductive structure comprises a plurality of metal line segments printed on the inner surface and/or the outer surface of the glass front plate in a silk-screen mode, and the metal line segments are connected in series and/or in parallel to form a metal conductive circuit. The conductive structure comprises a transparent conductive film arranged on the inner surface and/or the outer surface of the glass front plate. The surface temperature of the solar cell module is increased, and snow and continuous snowfall can be continuously melted, so that the solar cell module has good snow melting capability, and the power generation amount of the solar cell module in a region with large snowfall can be continuously improved.

Description

A crystalline silicon solar cell module with snow melting function

technical field

The invention belongs to the technical field of photovoltaic cells, and in particular relates to a crystalline silicon solar cell module with a function of melting snow.

Background technique

In Hokkaido, Japan, Northeast China, Inner Mongolia and other regions, there is a lot of snow in winter and the snowing time is long. The surface of photovoltaic modules is covered by ice and snow for a long time, and the modules may not be able to generate electricity for several months, which will greatly reduce the power generation of photovoltaic modules and photovoltaic systems. At present, photovoltaic modules do not have the function of melting snow. Once it snows, the surface of photovoltaic modules gradually accumulates snow, and the surface of photovoltaic modules is gradually covered by snow. With the increase of the shading area, the power generation of photovoltaic modules is almost zero.

From the perspective of the temperature of the components themselves, due to the low temperature in the above-mentioned extremely cold regions, photovoltaic modules will have a relatively high output of power generation. There are a large number of ground power stations and rooftop photovoltaic power stations in these regions. If the problem of surface snow melting can be solved, It will greatly increase the power generation capacity of the photovoltaic system.

Contents of the invention

In order to solve the above problems, the present invention provides a crystalline silicon solar cell assembly with a snow-melting function, which can melt snow covering the solar cell assembly and increase the power generation of the photovoltaic system.

The technical solution of the present invention is: a crystalline silicon solar cell assembly with snow melting function, comprising a glass front plate, a first encapsulation layer, a solar cell, a second encapsulation layer and a back plate arranged in sequence from top to bottom, the Conductive structures connected to external circuit structures are provided on the inner and/or outer surfaces of the glass front plate.

In the present invention, a conductive structure connected to the external circuit structure is provided on the surface of the glass front plate. The external circuit structure provides voltage and current for the conductive structure to make the conductive structure generate heat. The heat generated by the conductive structure is conducted to make the surface of the glass front plate The temperature rises, thereby melting the snow that covers the surface of the glass front. In the present invention, the conductive structure can be arranged on the inner surface or the outer surface of the glass front plate, and can also be arranged on both the inner surface and the outer surface of the glass front plate.

There are many structural forms of the conductive structure in the present invention, preferably, the conductive structure includes a plurality of metal wire segments silk-screened on the inner surface and/or outer surface of the glass front plate, and the plurality of metal wire segments are connected in series and/or in parallel to form metal conductive circuit. In the present invention, the glass front plate can be ultra-clear embossed glass or float glass, that is, the metal line segment can be on the tin surface and the non-tin surface of ultra-clear embossed glass or float glass, corresponding to when it is packaged with the component, the metal line segment Can be on the encapsulant side or on the air side.

Preferably, the conductive structure further includes a conductive bus bar for converging a plurality of metal wire segments to form a metal conductive circuit, and electrode lead-out lines connected to the conductive bus bar. The metal wire segments can be arranged in a certain shape on the glass surface, and form a series or parallel metal conductive circuit through the confluence of the conductive bus bars, and finally lead out from one or more electrode lead wires, and provide voltage and current through the external circuit structure, so that the metal wire segments fever.

In the present invention, the metal conductive circuits can be connected in parallel or in series. As a further preference, the metal conductive circuits are connected in parallel.

In the present invention, there are many ways to connect in parallel and in series. For example, when it is a parallel metal conductive circuit, multiple metal wire segments can be arranged in parallel in the present invention. They are connected in parallel with each other, and electrode lead-out lines are respectively arranged on the conductive busbars at both ends. Among them, there can be 30 metal wire segments, the width of the metal wire segment can be 0.5mm, and the thickness is 10-20μm; the width of the conductive bus can be gradually reduced from one end to the other end, for example, the width is reduced from 10mm to 5mm, and the electrode lead-out line The width is 20mm, the thickness is 0.25mm, the voltage value of the metal conductive circuit can be 24V, and the basic power is about 300W.

In the present invention, the metal wire segment can be made of various metals. Preferably, the metal wire segment is a silver paste wire segment or an aluminum paste wire segment. The invention can screen-print silver paste or aluminum paste on the glass front plate to form a metal conductive circuit.

Preferably, the conductive structure includes a transparent conductive film disposed on the inner surface and/or the outer surface of the glass front plate. The conductive structure in the present invention can also be coated with a layer of transparent conductive film on the surface of the glass front plate, wherein the coating process can be processed on the original glass. By energizing the transparent conductive film, the transparent conductive film will generate heat after energization, and the heat generated will increase the temperature of the surface of the glass front plate through conduction, thus melting the snow covering the surface of the glass front plate.

In the present invention, the transparent conductive film can be arranged on the glass front plate in various ways. As a preference, the transparent conductive film is arranged on the inner surface of the glass front plate and/or by magnetron sputtering, printing, roll coating or dip coating. or on the outer surface. Wherein the glass front plate may be rolled process glass or float process glass.

There are many kinds of materials for the transparent conductive film in the present invention, preferably, the material of the transparent conductive film is a semiconductor material or a transparent or colored film with a metal conductive material.

Preferably, the semiconductor material is graphene.

Preferably, the metal conductive material is in the form of a filament, and the metal conductive material is laid inside a transparent or colored film.

Preferably, the metal conductive material is tungsten, silver or aluminum, and the material of the transparent or colored film is EVA, POE, PVB or silica gel. The material of the transparent or colored film in the present invention can also be other kinds of polymer materials.

Compared with the prior art, the beneficial effects of the present invention are reflected in:

In the present invention, the surface temperature of the solar cell module rises, which can continuously melt snow and continuous snowfall. Therefore, the solar cell module of the present invention has a good snow melting ability, and continuously improves the power generation of the solar cell module in areas with heavy snowfall.

Description of drawings

Fig. 1 is a structural schematic diagram of the first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a third embodiment of the present invention.

FIG. 4 is a schematic cross-sectional structural view of FIG. 3 .

Fig. 5 is a schematic structural diagram of a fourth embodiment of the present invention.

FIG. 6 is a structural schematic diagram of the metal wire segment disposed on the outer surface of the glass front plate in the present invention.

Fig. 7 is a schematic structural diagram of a fifth embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a sixth embodiment of the present invention.

Detailed ways

As shown in Figures 1 to 8, the present invention includes a glass front plate 1, a first encapsulation layer, a solar cell, a second encapsulation layer and a back plate 2 arranged in sequence from top to bottom, the inner surface of the glass front plate 1 and/or Conductive structures connected to external circuit structures are arranged on the outer surface.

In the present invention, a conductive structure connected to the external circuit structure is provided on the surface of the glass front plate 1. The external circuit structure provides voltage and current for the conductive structure to make the conductive structure generate heat. The heat generated by the conductive structure is conducted to make the glass front plate 1 surface temperature rises, thereby melting the snow covering the surface of the glass front plate 1. In the present invention, the conductive structure can be arranged on the inner surface or the outer surface of the glass front plate 1 , or can be arranged on both the inner surface and the outer surface of the glass front plate 1 .

Wherein the structure form of conductive structure in the present invention has multiple, as shown in Figure 1, Figure 2, Figure 3 and Figure 5, in this embodiment the conductive structure comprises silk screen on the glass front plate 1 inner surface and/or outer surface A plurality of metal wire segments 4 are connected in series and/or in parallel to form a metal conductive circuit. Wherein Fig. 1 and Fig. 2 are series connection mode, Fig. 3 and Fig. 5 are parallel connection mode, glass front plate 1 can be ultra-clear embossed glass or float glass among the present invention, promptly metal wire segment 4 can be in ultra-clear embossed glass The tin surface and the non-tin surface of glass or float glass correspond to when the components are packaged, the metal line segment 4 can be on the side of the packaging film or on the air side.

As shown in FIGS. 3 to 6 , the conductive structure in the present invention also includes a conductive bus bar 5 for converging a plurality of metal wire segments 4 to form a metal conductive circuit, and electrode lead wires 6 connected to the conductive bus bar 5 . The metal wire segments 4 can be arranged in a certain shape on the glass surface, and form a series or parallel metal conductive circuit through the conductive bus bar 5, and finally lead out from one or more electrode lead wires 6, and provide voltage and current through the external circuit structure. The metal wire segment 4 is heated.

In the present invention, there are many ways to connect in parallel and in series. For example, when it is a parallel metal conductive circuit, as shown in FIG. 3 and FIG. The terminals are converging through the conductive bus bars 5, so that a plurality of metal line segments 4 are connected in parallel, and then electrode lead-out lines 6 are respectively arranged on the conductive bus bars 5 at both ends. Among them, there can be 30 metal wire segments 4, the width of the metal wire segment 4 can be 0.5 mm, and the thickness is 10-20 μm; the width of the conductive bus bar 5 can gradually decrease from one end to the other end, for example, the width is reduced from 10 mm to 5 mm. The lead wire 6 has a width of 20mm and a thickness of 0.25mm, the voltage value of the metal conductive circuit can be 24V, and the basic power is about 300W. Metal Line Segment 4 Metal Line Segment 4

The metal wire segment 4 in the present invention can be made of various metals, and the metal wire segment 4 is a silver paste wire segment or an aluminum paste wire segment. In the present invention, silver paste or aluminum paste can be screen-printed on the glass front plate 1 to form a metal conductive circuit.

As shown in FIGS. 7 and 8 , the conductive structure in this embodiment includes a transparent conductive film 3 disposed on the inner surface and/or the outer surface of the glass front plate 1 . The conductive structure in the present invention can also be coated with a layer of transparent conductive film 3 on the surface of the glass front plate 1, wherein the coating process can be processed on the original glass. By energizing the transparent conductive film 3 , the transparent conductive film 3 generates heat after energization, and the generated heat is conducted to increase the temperature of the surface of the glass front plate 1 , thus melting the snow covering the surface of the glass front plate 1 . Transparent Conductive Film 3 Transparent Conductive Film 3

In the present invention, the transparent conductive film 3 can be disposed on the glass front plate 1 in various ways, for example, the transparent conductive film 3 is disposed on the inner surface of the glass front plate 1 and/or by magnetron sputtering, printing, roll coating or dip coating or on the outer surface. Wherein the glass front plate 1 may be rolled process glass or float process glass.

There are many kinds of materials for the transparent conductive film 3 in the present invention, for example, the material of the transparent conductive film 3 is a transparent or colored thin film of semiconductor material or metal conductive material. For example, the semiconductor material may be graphene. The metal conductive material in the transparent or colored film of metal conductive material is in the shape of a filament, and the metal conductive material is laid inside the transparent or colored film. The metal conductive material can be tungsten, silver or aluminum, and the material of the transparent or colored film is EVA, POE , PVB or silica gel and other polymer materials.

Claims (10)

1. a kind of crystal silicon solar battery component with snow melting function, including be sequentially arranged from top to bottom glass front plate, First encapsulated layer, solar cell, the second encapsulated layer and backboard, which is characterized in that the glass front plate inner surface and/or outer The conductive structure being connected with external circuit structure is provided on surface.

2. the crystal silicon solar battery component of snow melting function is carried as described in claim 1, which is characterized in that the conduction Structure includes silk-screen in multiple metal wire sections on glass front plate inner surface and/or outer surface, and multiple metal wire sections are serially connected And/or formation metallic conduction circuit in parallel.

3. the crystal silicon solar battery component of snow melting function is carried as claimed in claim 2, which is characterized in that the conduction Structure further includes to form the busbar of metallic conduction circuit for multiple metal wire sections to be converged and with busbar be connected The electrode outlet line connect.

4. the crystal silicon solar battery component of snow melting function is carried as claimed in claim 2 or claim 3, which is characterized in that described Metal wire sections are silver paste line segment or aluminium paste line segment.

5. the crystal silicon solar battery component of snow melting function is carried as described in claim 1, which is characterized in that the conduction Structure includes the transparent conductive film being set on glass front plate inner surface and/or outer surface.

6. the crystal silicon solar battery component of snow melting function is carried as claimed in claim 5, which is characterized in that described transparent Conductive film is set to by way of magnetron sputtering, printing, roller coating or dip-coating on glass front plate inner surface and/or outer surface.

7. the crystal silicon solar battery component of snow melting function is carried as claimed in claim 6, which is characterized in that described transparent The material of conductive film is semi-conducting material or the transparent or colorful film with conductive metal material.

8. the crystal silicon solar battery component of snow melting function is carried as claimed in claim 7, which is characterized in that described partly to lead Body material is graphene.

9. the crystal silicon solar battery component of snow melting function is carried as claimed in claim 7, which is characterized in that the metal Conductive material is in filament shape, and the conductive metal material is layed in inside transparent or colorful film.

10. the crystal silicon solar battery component of snow melting function is carried as claimed in claim 9, which is characterized in that the gold Category conductive material is tungsten, silver or aluminium, and described transparent or colorful film material is EVA, POE, PVB or silica gel.