CN216015389U - Packaging adhesive film and photovoltaic module - Google Patents

Abstract

The utility model discloses a packaging adhesive film and photovoltaic module, including packaging adhesive film body, packaging adhesive film body's surface is provided with at least one spacing groove, the black dyed layer has been laid on spacing groove surface. Be provided with at least one spacing groove through the surface at encapsulation glued membrane body, lay the black dyed layer on every spacing groove surface, the black dyed layer covers silvery white tinned bus bar to avoid silvery white tinned bus bar reflection of light, and then promote photoelectric conversion efficiency, and need not to carry out the fluting to positive board among the photovoltaic module, consequently avoid increasing the production beat, can not influence the productivity, avoid extravagant on the cost simultaneously.

Description

Packaging adhesive film and photovoltaic module

Technical Field

The utility model relates to a photovoltaic module prepares the field, more specifically relates to a encapsulation glued membrane and photovoltaic module.

Background

With the development of photovoltaic technology and the continuous enhancement of environmental awareness of people, photovoltaic modules gradually move into the field of vision of the public. The full-black component is more and more emphasized by the photovoltaic market because the appearance of the full-black component is highly fit with the building, but the problem of light reflection of a silvery white tin-coated bus bar can occur in the prior art, the problem of low light conversion rate exists after light reflection, the beat is influenced, and the productivity is reduced.

Therefore, it is an urgent need to solve the technical problem of the present invention to provide a method for preventing the silver-white tinned bus bar from reflecting, and avoiding the waste of cost.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a packaging adhesive film and photovoltaic module.

The technical scheme is as follows: the utility model provides a packaging adhesive film, includes packaging adhesive film body, packaging adhesive film body's surface is provided with at least one spacing groove, the black dyed layer has been laid to the spacing groove surface.

Preferably, the groove wall of the limiting groove extends towards the direction far away from the surface of the packaging adhesive film body, and the notch of the limiting groove protrudes out of the surface of the packaging adhesive film body.

Preferably, at least two pre-crosslinking points are distributed on the groove bottom of the limiting groove along the length direction.

Preferably, the width of the limiting groove is 2-8 mm.

Preferably, the depth of the limiting groove perpendicular to the surface of the packaging adhesive film body is 1-4 mm.

Preferably, the limiting groove extends along a first direction, and the first direction is along the width direction of the packaging adhesive film body; the limiting grooves are two or more, the limiting grooves are arranged along a second direction, and the first direction is perpendicular to the second direction.

Preferably, the material of the black coloring layer is carbon black or oil-soluble black.

The utility model also provides a photovoltaic module, including the photovoltaic lamination spare, the photovoltaic lamination spare is including positive plate, first encapsulation glued membrane, solar wafer, second encapsulation glued membrane and the backplate of arranging in proper order from top to bottom, wherein, first encapsulation glued membrane is including any of the above-mentioned embodiment of the utility model provides an encapsulation glued membrane, the solar wafer is connected with the busbar, just black dyed layer of laying in the spacing inslot in the encapsulation glued membrane with the busbar is in the corresponding setting in the thickness direction of encapsulation glued membrane, just black dyed layer is in the projection in the lamination spare range upon range of side with the busbar is in the projection in the lamination spare range upon range of side is overlapped mutually.

Preferably, the solar cell further comprises a frame coated on the periphery of the photovoltaic laminating part, the frame is a black frame, the back panel is a black back panel, and the solar cell is a TOPCon black cell.

Preferably, the difference between the width of the stopper groove and the width of the bus bar is 0 to 2.0 mm.

Compared with the prior art, the utility model provides a packaging adhesive film and photovoltaic module have realized following beneficial effect at least:

because the surface that will encapsulate the glued membrane body is provided with at least one spacing groove, lays the black dyed layer on every spacing groove surface, and the black dyed layer covers silvery white tinned bus bar to avoid silvery white tinned bus bar reflection of light, and then promote photoelectric conversion efficiency, and need not to carry out the fluting to positive board among the photovoltaic module, consequently avoid increasing the production beat, can not influence the productivity, avoid extravagant on the cost simultaneously.

Of course, it is not necessary for any product of the present invention to achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram of a packaging adhesive film according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a packaging adhesive film according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present invention;

fig. 4 is a front view of a photovoltaic laminate provided by embodiments of the present invention;

fig. 5 is a partially enlarged view of a portion a in fig. 4.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

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.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a packaging adhesive film according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a packaging adhesive film according to an embodiment of the present invention; as shown in fig. 1 and fig. 2, the present embodiment provides a packaging adhesive film 1, which includes a packaging adhesive film body 10, at least one limiting groove 11 is disposed on a surface of the packaging adhesive film body 10, and a black coloring layer 12 is laid on a surface of the limiting groove.

Specific, encapsulation glued membrane 1 suitable for photovoltaic module is including encapsulation glued membrane body 10, encapsulation glued membrane body 10 can adopt EVA glued membrane or POE glued membrane, surface at encapsulation glued membrane body 10 is provided with a plurality of spacing grooves 11, with every this spacing groove 11 and corresponding busbar phase-match, this spacing groove 11 can adopt slot or recess, as long as can cooperate with the busbar can, the cross sectional shape of this spacing groove can be the square, also can be semi-circular, do not further inject here to its shape, busbar 26 is conventional silvery tin-coated busbar, lay black dyed layer 12 on 11 surfaces of every spacing groove, in order to form the black region, this black dyed layer 12 is used for hiding silvery tin-coated busbar, can understand and be: the black coloring layer 12 covers the silvery-white tinned bus bar, thereby preventing the silvery-white tinned bus bar from reflecting light; the black region that black dyed layer 12 formed can improve automatic POE equipment discernment precision location of laying, and POE equipment is rolling equipment, rolls out spacing groove 11 through POE equipment, need not to slot to the positive board in the photovoltaic module simultaneously, consequently avoids increasing the production beat, can not influence the productivity.

According to the above embodiment, the utility model provides a packaging adhesive film 1 has realized following beneficial effect at least:

owing to be provided with at least one spacing groove 11 on the surface of encapsulating glued membrane body 10, lay black dyed layer 12 on every spacing groove 11 surface, black dyed layer 12 covers the silvery white tinned bus bar to avoid the silvery white tinned bus bar reflection of light, and then promote photoelectric conversion efficiency, and need not to carry out the fluting to the front panel among the photovoltaic module, consequently avoid increasing the takt, can not influence the productivity, avoid extravagant on the cost simultaneously.

In some optional embodiments, with continued reference to fig. 1 and 2, the groove wall of the limiting groove 11 extends in a direction away from the surface of the packaging adhesive film body 1, and since the limiting groove 11 is matched with the bus bar, the limiting groove 11 limits the bus bar to increase the limiting effect on the bus bar, or the limiting groove 11 blocks the bus bar to increase the blocking effect on the bus bar; and the notch of the limiting groove 11 protrudes out of the surface of the packaging adhesive film body 1, so that the limiting or clamping effect on the bus bar is more effectively increased.

In some alternative embodiments, with continued reference to fig. 1 and 2, at least two pre-cross-linking points are distributed along the length direction on the bottom of the limiting groove 11, and the electric iron is used to drop the bus bar 26 after the packaging adhesive film body 10 is laid, so that the bus bar 26 is pre-connected with the fixed packaging adhesive film body 10, and further the packaging adhesive film body 10 is fixed to prevent the sliding thereof.

In some alternative embodiments, with continued reference to fig. 1 and 2, when the width of the limiting groove 11 is too large, the accuracy of limiting the bus bar by the limiting groove 11 may be reduced, and when the width of the limiting groove is too small, the limiting groove 11 may not be able to effectively engage with the bus bar 26, so that the width of the limiting groove 11 is 2-8mm, and the limiting groove 11 can both limit the bus bar 26 and effectively engage with the bus bar.

In some optional embodiments, with continued reference to fig. 1 and 2, the thickness of the bus bar 26 is about 0.4mm, for example, 0.2-0.8mm, when the depth of the limiting groove 11 is too small, the bus bar cannot be completely covered, the bus bar may shift left and right relative to the bus bar 26 after being fastened, and when the depth of the limiting groove 11 is too large, the thickness of the packaging film body 10 needs to be correspondingly increased, so that the depth of the limiting groove 11 perpendicular to the surface of the packaging film body 10 is 1-4mm, by adopting the scheme, the bus bar can be more favorably fastened, and the increase of the thickness of the packaging film body 10 can be avoided.

In some optional embodiments, with continued reference to fig. 1 and 2, the limiting groove 11 extends along a first direction, where the first direction is along a width direction of the packaging adhesive film body 1; the spacing groove has two and more, a plurality of spacing grooves 11 are arranged along the second direction, first direction is perpendicular with the second direction, make spacing groove 11 and busbar 26 phase-match, and then make black dyed layer 12 more effectively cover silvery white scribble tin busbar 26 reflection of light problem on the spacing groove, according to the array direction and the extending direction of connecting the busbar on the solar wafer, inject the extending direction and the array direction of spacing groove 11, certainly according to actual conditions, the length direction that the solar wafer can also be followed to the spacing groove extends, and arrange along the width direction of solar wafer, here, do not specially prescribe a limit.

In some optional embodiments, the material of the black coloring layer 12 is carbon black or oil-soluble black, and this scheme is adopted, wherein the carbon black is amorphous carbon, is a light, loose and extremely fine black powder, has a large surface area, and ranges from 10 to 3000m²The/g is the product obtained by incomplete combustion or thermal decomposition of the carbonaceous material under the condition of insufficient air; the oil-soluble black is the oil-soluble aniline black, and both materials can be conveniently colored, so that the practicability is high and the cost is low.

Fig. 3 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present invention; fig. 4 is a front view of a photovoltaic laminate provided by embodiments of the present invention; fig. 5 is a partially enlarged view of a portion a in fig. 4. As shown in fig. 3-5, the embodiment of the utility model provides a photovoltaic module is still provided, including photovoltaic lamination spare 2, photovoltaic lamination spare is including the front panel 21, first encapsulation glued membrane 22, solar wafer 23, second encapsulation glued membrane 24 and the backplate 25 that from top to bottom arrange in proper order, and wherein, first encapsulation glued membrane 22 is including the utility model discloses above-mentioned arbitrary embodiment provides encapsulation glued membrane 1, and solar wafer 23 is connected with busbar 26, and the black dyed layer 12 of laying in the spacing groove 11 in the encapsulation glued membrane 1 corresponds the setting with busbar 46 in the thickness direction of encapsulation glued membrane 1, and the projection of black dyed layer 12 on the laminating direction of photovoltaic lamination spare 2 overlaps with the projection of busbar on the laminating direction of photovoltaic lamination spare 2 mutually.

Specifically, the photovoltaic module includes a photovoltaic laminate 2, the photovoltaic laminate includes a front panel 21, a first packaging film 22, a solar cell 23, a second packaging film 24 and a back panel 25, the first packaging film 22 includes the packaging film 1 according to any of the above embodiments of the present invention, generally, the solar cell 23 is connected to form a cell string along the length direction of the photovoltaic laminate 2 by a solder strip 27, and bus bars 26 are respectively connected between the ends of the upper and lower cell strings arranged along the length direction and the upper and lower cell strings, and the black coloring layer 12 laid in the limiting groove 11 in the packaging film 1 and the bus bars 46 are correspondingly arranged in the thickness direction of the packaging film 1, that is, the limiting groove 11 is matched with the bus bars 26, the projection of the bus bars 26 in the lamination direction of the photovoltaic laminate 2 falls within the projection range of the black coloring layer 12 in the lamination direction of the photovoltaic laminate 2, it can also be understood that the projection of the black coloration layer 12 in the lamination direction of the photovoltaic laminate 2 covers the projection of the bus bar 26 in the lamination direction of the photovoltaic laminate 2, and the black coloration layer 12 can thus more effectively cover the bus bar 26; here, the front panel 21 may employ double coated glass; the second packaging adhesive film 24 may also be a POE adhesive film or an EVA adhesive film.

According to the above embodiment, the utility model provides a photovoltaic module has realized following beneficial effect at least:

this application blocks busbar 26 with spacing groove 11 more effectively, and black dyed layer 12 covers silvery white tinned busbar 26, and then avoids silvery white tinned busbar 26 reflection of light, need not to carry out the fluting to the front panel among the photovoltaic module, consequently avoids increasing the takt, can not influence the productivity, avoids extravagant on the cost simultaneously.

In some alternative embodiments, as shown with continued reference to fig. 3, a frame 3 is further included to wrap around the photovoltaic laminate 2, the frame 3 is a black frame, the back panel 25 is a black back panel, and the solar cell sheet 23 is a TOPCon black cell.

Specifically, the photovoltaic assembly 2 further comprises a frame 3, the frame 3 is wrapped around the photovoltaic lamination piece 2, the frame 3 is a black frame, and the black frame can improve the attractiveness of the appearance of the black assembly; the back panel 25 can be a black back panel or a black high-reflection back panel, the structure of the high-reflection back panel is generally the same as that of a conventional back panel, and the back panel is divided into three layers, the difference from the conventional back panel lies in the middle layer PET layer, the middle layer of the conventional back panel is a transparent PET layer, the middle layer of the high-reflection back panel is a white PET layer, the white PET layer in the high-reflection back panel can improve the secondary reflection of light, improve the power, and more effectively improve the output power of the assembly by adopting the black high-reflection back panel as the back panel; the solar cell piece 23 is made of TOPCON black cells, wherein the black cell process is that a silicon oxynitride film layer is laminated on the basis of TOPCON, the laminated silicon oxynitride film layer is black, the black frame is adopted as the middle frame 3 of the photovoltaic module, the back panel 25 can be a black back panel or a black high-reflection back panel, and the TOPCON black cells are adopted as the whole solar cell piece 23, so that the photovoltaic module has the whole black effect, the output power of the module is improved, and the whole aesthetic feeling of the photovoltaic module is further improved.

In some optional embodiments, the difference between the width of the limiting groove 11 and the width of the bus bar is 0-2.0mm, which is convenient for practical installation and is beneficial to ensuring limiting effect, because the bus bar is not easy to be installed when the width between the limiting groove and the bus bar is too small, and the limiting effect cannot be achieved when the width between the limiting groove and the bus bar is too large.

According to the above embodiment, the utility model provides a be applicable to photovoltaic module's encapsulation glued membrane and photovoltaic module has realized following beneficial effect at least:

the surface of the packaging adhesive film body is provided with at least one limiting groove, the surface of each limiting groove is paved with a black coloring layer, and the black coloring layer covers the silvery-white tinned bus bar, so that the silvery-white tinned bus bar is prevented from reflecting light, the photoelectric conversion efficiency is improved, and the front panel in the photovoltaic component is not required to be grooved, so that the production beat is prevented from being increased, the productivity is not influenced, and the cost waste is avoided; optionally, the frame in the photovoltaic module is a black frame, the back panel is a black high-reflection back panel, and the solar cell piece is a TOPCon black cell whole, so that the photovoltaic module has a whole black effect, the output power of the module is improved, and the whole aesthetic feeling of the photovoltaic module is improved.

Although certain specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (10)

1. A packaging adhesive film is characterized in that,

the packaging adhesive film comprises a packaging adhesive film body, wherein at least one limiting groove is formed in the surface of the packaging adhesive film body, and a black coloring layer is laid on the surface of the limiting groove.

2. The packaging adhesive film of claim 1, wherein a wall of the limiting groove extends away from the surface of the packaging adhesive film body, and a notch of the limiting groove protrudes from the surface of the packaging adhesive film body.

3. The packaging adhesive film of claim 1, wherein at least two pre-crosslinking points are distributed on the bottom of the limiting groove along the length direction.

4. The packaging adhesive film of claim 1, wherein the width of the limiting groove is 2-8 mm.

5. The packaging adhesive film of claim 1, wherein the depth of the limiting groove perpendicular to the surface of the packaging adhesive film body is 1-4 mm.

6. The packaging adhesive film according to claim 1,

the limiting groove extends along a first direction, and the first direction is along the width direction of the packaging adhesive film body;

the limiting grooves are two or more, the limiting grooves are arranged along a second direction, and the first direction is perpendicular to the second direction.

7. The packaging adhesive film according to any one of claims 1 to 6, wherein the black coloring layer is made of carbon black or oil-soluble black.

8. A photovoltaic module is characterized by comprising a photovoltaic laminating part, wherein the photovoltaic laminating part comprises a front panel, a first packaging adhesive film, a solar cell piece, a second packaging adhesive film and a back panel which are sequentially arranged from top to bottom, the first packaging adhesive film is the packaging adhesive film of any one of claims 1 to 7, the solar cell piece is connected with a bus bar, a black coloring layer laid in a limiting groove in the packaging adhesive film and the bus bar are correspondingly arranged in the thickness direction of the packaging adhesive film, and the projection of the black coloring layer in the stacking direction of the photovoltaic laminating part is overlapped with the projection of the bus bar in the stacking direction of the photovoltaic laminating part.

9. The photovoltaic module of claim 8, wherein a projection of the bus bar in the photovoltaic laminate stacking direction falls within a projection range of the black coloring layer in the photovoltaic laminate stacking direction.

10. The photovoltaic module according to claim 8 or 9, wherein the difference between the width of the black coloring layer and the width of the bus bar is 0 to 2.0 mm.

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