CN220821579U - Film photovoltaic double-sided power generation assembly - Google Patents

Abstract

The utility model provides a film photovoltaic double-sided power generation assembly, which comprises a first film photovoltaic assembly, a packaging adhesive film layer and a second film photovoltaic assembly which are sequentially stacked, wherein bus bars are arranged in the packaging adhesive film layer and penetrate through the packaging adhesive film layer to connect the first film photovoltaic assembly and the second film photovoltaic assembly. According to the utility model, the bus bars are embedded into the packaging adhesive film layer to realize circuit connection of the double-sided power generation glass, so that the double-sided power generation glass has a better packaging effect, the number of the bus bars is reduced, the manufacturing cost is reduced, and meanwhile, higher power generation efficiency can be achieved.

Description

Film photovoltaic double-sided power generation assembly

Technical Field

The utility model belongs to the technical field of film photovoltaics, and relates to a film photovoltaic double-sided power generation assembly.

Background

At present, thin film photovoltaics are popular in the field of BIPV (photovoltaic building integrated, building Integrated Photovoltaic) due to their excellent appearance consistency, and particularly in the place of traditional light-transmitting glass, have a rolling advantage over crystalline silicon products. The manufacturing method of the film double-sided component mainly comprises two steps: the first is to use a transparent conductive electrode as the back surface; the second is realized by mirror coating of the power generation function layers on the two sides of the conductive glass. The transparent electrode has poor conductivity, is difficult to achieve higher power generation efficiency and even lower than the efficiency of a non-transparent single-sided battery, and has great manufacturing process difficulty and difficult practical operation. Accordingly, the existing film double-sided assembly structure needs to be further improved.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model aims to provide the film photovoltaic double-sided power generation assembly, which realizes circuit connection of double-sided power generation glass by embedding the bus bar in the packaging adhesive film layer, has better packaging effect, ensures excellent appearance and achieves higher power generation efficiency.

To achieve the purpose, the utility model adopts the following technical scheme:

The utility model provides a film photovoltaic double-sided power generation assembly, which comprises a first film photovoltaic assembly, a packaging adhesive film layer and a second film photovoltaic assembly which are sequentially stacked, wherein bus bars are arranged in the packaging adhesive film layer and penetrate through the packaging adhesive film layer to connect the first film photovoltaic assembly and the second film photovoltaic assembly.

The first thin film photovoltaic module, the packaging adhesive film layer and the second thin film photovoltaic module form a double-sided power generation sandwich structure, the first thin film photovoltaic module and the second thin film photovoltaic module are arranged back to back, the packaging adhesive film layer is positioned between the first thin film photovoltaic module and the second thin film photovoltaic module, and circuit connection between the first thin film photovoltaic module and the second thin film photovoltaic module is reinforced by using the bus bars through the high-temperature high-pressure sheets, so that current collection is facilitated; and wrap up the busbar inside the encapsulation glued membrane layer, have better encapsulation effect for the outward appearance is more pleasing to the eye, has higher generated energy simultaneously, realizes the high-efficient double-sided electricity generation.

Compared with the traditional four-terminal double-sided power generation assembly which adopts 4 bus bars and is provided with the lead-out mode of 4 lead-out holes, the bus bars are used for conducting circuit connection between the first film photovoltaic assembly and the second film photovoltaic assembly, two ends of the bus bars penetrate through the packaging adhesive film layer along the thickness direction of the packaging adhesive film layer and are respectively connected with the first film photovoltaic assembly and the second film photovoltaic assembly which are positioned at two sides of the packaging adhesive film layer, so that the positive and negative poles of the first film photovoltaic assembly and the second film photovoltaic assembly are used together, current collection is achieved, only 2 bus bars are needed, and the lead-out holes are formed, so that the bus bars can be led out through bus bar bus bars, the use of the bus bars is reduced, the manufacturing cost is reduced, the number of the holes is reduced, water vapor and oxygen in air are prevented from entering and reacting with internal materials in a contact mode, failure is avoided, and the service life of the power generation assembly is prolonged.

As for the way of drawing out the bus bar, any way known to those skilled in the art can be adopted, for example, a lead wire can be adopted, one end of which is connected with the bus bar, and the other end extends out of the packaging adhesive film in the direction perpendicular to the thickness direction of the packaging adhesive film layer and is connected to an external junction box; the bus bar can also be bent, so that one end of the bus bar extends out of the packaging adhesive film along the thickness direction perpendicular to the packaging adhesive film layer and is connected to an external junction box. It will of course be appreciated that other ways of achieving extraction of the bus bars are equally within the scope of the utility model and the disclosure, and that other extraction patterns, either disclosed in the prior art or not disclosed in the new art, may be used in the present utility model.

The utility model has wide application range, can be used in the fields of double-sided power generation stations, building facade curtain walls, building daylighting roofs and the like, and improves the power generation efficiency.

It should be noted that, according to different application scenarios, the first thin film photovoltaic module and the second thin film photovoltaic module may be connected in parallel or in series. For example, when the power generation assembly is in an environment with similar light intensity on two sides, the power generation assembly can be arranged in parallel or in series; when the power generation assembly is in an environment with larger difference of the received light intensities on two sides, the first thin film photovoltaic assembly and the second thin film photovoltaic assembly are required to be connected in parallel, so that the risk of current mismatch of the first thin film photovoltaic assembly and the second thin film photovoltaic assembly is reduced.

As one technical scheme of the utility model, the first thin film photovoltaic module and the second thin film photovoltaic module independently comprise a glass substrate and a thin film coating, and the thin film coating is arranged between the packaging adhesive film layer and the glass substrate.

As a technical scheme of the utility model, the film coating comprises an electrode layer, a first carrier transmission layer, a film power generation layer and a second carrier transmission layer which are sequentially laminated from the packaging adhesive film layer to the direction of the glass substrate.

In the utility model, each functional layer in the film coating of the first film photovoltaic module and the second film photovoltaic module takes the packaging adhesive film layer as the center and is in mirror image arrangement, which is beneficial to parallel circuit between the first film photovoltaic module and the second film photovoltaic module and realizes the maximization of double-sided power generation efficiency.

In the utility model, the polarity of charged particles transmitted in the first carrier transmission layer of the first thin-film photovoltaic module is the same as that of charged particles transmitted in the first carrier transmission layer of the second thin-film photovoltaic module; the polarity of charged particles transmitted in the second carrier transmission layer of the first thin film photovoltaic module is the same as that of charged particles transmitted in the second carrier transmission layer of the second thin film photovoltaic module; the charged particles are holes or electrons. Namely, the charged particles transmitted in the first carrier transmission layer of the first thin film photovoltaic module and the charged particles transmitted in the first carrier transmission layer of the second thin film photovoltaic module are holes or electrons at the same time; the charged particles transported in the second carrier transport layer of the first thin film photovoltaic module are holes or electrons at the same time as the charged particles transported in the second carrier transport layer of the second thin film photovoltaic module.

As an aspect of the present utility model, the first thin film photovoltaic module and the second thin film photovoltaic module independently include light-transmitting regions and thin film regions that are striped and alternately distributed at intervals.

In one embodiment of the present utility model, the width of the light-transmitting region is 100 to 2000 μm, and may be, for example, 100 μm, 200 μm, 400 μm, 500 μm, 600 μm, 800 μm, 1000 μm, 1200 μm, 1500 μm, 1600 μm, 1700 μm, 1800 μm, 1900 μm or 2000 μm, but not limited to the recited values, and other values not recited in the range of values are equally applicable.

The width of the thin film region is 100 to 18000. Mu.m, for example, 100 μm, 200 μm, 500 μm, 1000 μm, 1500 μm, 200 μm, 4000 μm, 5000 μm, 7000 μm, 8000 μm, 10000 μm, 12000 μm, 15000 μm or 18000 μm, but not limited to the values listed, and other values not listed in the range of values are equally applicable.

As a technical scheme of the utility model, the light transmission area of the first thin film photovoltaic module and the light transmission area of the second thin film photovoltaic module are mutually overlapped or at least partially crossed.

It should be noted that, the thin film coatings of the first thin film photovoltaic module and the second thin film photovoltaic module in the utility model may be opaque coatings or partially transparent coatings. According to different application scenes and design requirements, different light transmittance and light transmittance patterns are realized by adjusting the light transmission area and the film area, so that excellent appearance is ensured, and meanwhile, the transparent film has better light transmittance.

According to the technical scheme, the bus bar comprises a metal matrix, and a first conductive adhesive layer and a second conductive adhesive layer which are respectively positioned on two side surfaces of the metal matrix, wherein the first conductive adhesive layer is connected with the first film photovoltaic module, and the second conductive adhesive layer is connected with the second film photovoltaic module.

According to the technical scheme, the packaging adhesive film layer is provided with the reserved hole, the bus bar is located in the reserved hole, and the first conductive adhesive layer and the second conductive adhesive layer extend in the direction away from the metal substrate and extend out of the reserved hole along the thickness direction of the packaging adhesive film layer.

In one embodiment of the present utility model, the distance from the preformed hole to the outer edge of the packaging film layer is 10-70 mm, and may be, for example, 10mm, 15mm, 20mm, 25mm, 30mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm or 70mm, but not limited to the recited values, and other non-recited values within the range of the values are equally applicable.

The width of the bus bar is 2 to 10mm, and may be, for example, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or 10mm, but is not limited to the recited values, and other values not recited in the range of values are equally applicable.

The thickness of the bus bar beyond the packaging film layer is 20-100 μm along the thickness direction of the packaging film layer, and may be, for example, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm or 100mm, but is not limited to the recited values, and other non-recited values within the range of values are equally applicable.

As a technical scheme of the utility model, the film photovoltaic double-sided power generation assembly further comprises a bus outgoing line and a junction box, wherein one end of the bus outgoing line is connected with the junction box, and the other end of the bus outgoing line extends into the packaging adhesive film layer to be connected with the bus bar.

According to the utility model, the bus-bar lead wires are adopted to lead out the positive and negative electrode shared bus bars of the first thin film photovoltaic module and the second thin film photovoltaic module at two sides to form ohmic connection, and the junction boxes are positioned at two sides of the photovoltaic modules, so that the electric energy generated by the thin film photovoltaic modules can be transmitted, the number of the bus-bar lead wires is reduced, and the volume of the junction boxes is reduced.

Compared with the prior art, the utility model has the beneficial effects that:

(1) According to the thin film photovoltaic double-sided power generation assembly, the first thin film photovoltaic assembly, the packaging adhesive film layer and the second thin film photovoltaic assembly are adopted to form a double-sided power generation sandwich structure, wherein the first thin film photovoltaic assembly and the second thin film photovoltaic assembly are arranged back to back, the packaging adhesive film layer is positioned between the first thin film photovoltaic assembly and the second thin film photovoltaic assembly, and through the high-temperature high-pressure sheet, the circuit connection between the first thin film photovoltaic assembly and the second thin film photovoltaic assembly is reinforced by the bus bar, so that current collection is facilitated, and power generation efficiency is improved;

(2) According to the utility model, the bus bar is wrapped in the packaging adhesive film layer, so that a better packaging effect is achieved, and the appearance is more attractive;

(3) According to the utility model, the two ends of the bus bar penetrate through the packaging adhesive film layer along the thickness direction of the packaging adhesive film layer so as to be used together by the anode and the cathode of the first film photovoltaic module and the second film photovoltaic module, so that the collection of current is realized, the number of the bus bar and the number of holes are reduced, the use cost is reduced, and meanwhile, the water vapor and the oxygen in the air can be prevented from entering and reacting with internal materials in a contact way, so that the failure is caused, and the service life of the power generation module is prolonged;

(4) According to the utility model, the bus bars shared by the positive and negative electrodes of the first thin film photovoltaic module and the second thin film photovoltaic module are led out, so that the use of lead wires is reduced, the size of the junction box is reduced, meanwhile, the junction box is positioned at two sides of the photovoltaic modules, the installation is convenient, the appearance is prevented from being influenced by the exposed junction box, the cable length is saved, and the cost is reduced;

(5) The first thin film photovoltaic module and the second thin film photovoltaic module are arranged in a mirror image mode, parallel circuits between the first thin film photovoltaic module and the second thin film photovoltaic module are facilitated, maximization of double-sided power generation efficiency is achieved, and module practicability is improved.

Drawings

Fig. 1 is a schematic structural diagram of a thin film photovoltaic double-sided power generation assembly provided in embodiment 1 of the present utility model;

Fig. 2 is a side view of a thin film photovoltaic double-sided power generation assembly provided in embodiment 1 of the present utility model;

FIG. 3 is a schematic diagram of the structure of the transparent region and the thin film region according to embodiment 1 of the present utility model;

fig. 4 is a schematic structural diagram of a packaging film layer provided in embodiment 1 of the present utility model;

Fig. 5 is a schematic structural view of a bus bar according to embodiment 1 of the present utility model;

fig. 6 is a schematic structural diagram of a light-transmitting region and a thin film region according to embodiment 2 of the present utility model.

Wherein 1-a first thin film photovoltaic module; 101-electrode layer I; 102-a first carrier transport layer i; 103-a thin film power generation layer I; 104-a second carrier transport layer i; 105-glass substrate I; 2-packaging the adhesive film layer; 3-a second thin film photovoltaic module; 301-electrode layer II; 302-a first carrier transport layer ii; 303-a thin film power generation layer II; 304-a second carrier transport layer ii; 105-glass substrate II; 4-bus bars; a 5-light transmission region; 6-film region; 7-a metal matrix; 8-a first conductive adhesive layer; 9-a second conductive adhesive layer; 10-preformed holes; 11-a bus lead; 12-junction box.

Detailed Description

It is to be understood that in the description of the present utility model, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

It should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

In a specific embodiment, the utility model provides a film photovoltaic double-sided power generation assembly, which comprises a first film photovoltaic assembly 1, a packaging adhesive film layer 2 and a second film photovoltaic assembly 3 which are sequentially stacked, wherein bus bars 4 are arranged in the packaging adhesive film layer 2, and two ends of the bus bars 4 respectively penetrate through the packaging adhesive film layer 2 to connect the first film photovoltaic assembly 1 and the second film photovoltaic assembly 3.

The first thin film photovoltaic module 1 and the second thin film photovoltaic module 3 are independent of a glass substrate and a thin film coating, and the thin film coating is arranged between the packaging adhesive film layer 2 and the glass substrate. The glass substrate may be made of conductive glass. The film coating comprises an electrode layer, a first carrier transmission layer, a film power generation layer and a second carrier transmission layer which are sequentially laminated from the packaging adhesive film layer 2 to the glass substrate. In the utility model, each functional layer in the film coating of the first film photovoltaic module 1 and the second film photovoltaic module 3 takes the packaging adhesive film layer 2 as a center and is in mirror image arrangement, which is beneficial to parallel circuit between the first film photovoltaic module 1 and the second film photovoltaic module 3 and realizes the maximization of double-sided power generation efficiency.

The polarity of charged particles transmitted in the first carrier transmission layer of the first thin film photovoltaic module 1 is the same as that of charged particles transmitted in the first carrier transmission layer of the second thin film photovoltaic module 3. The polarity of charged particles transmitted in the second carrier transmission layer of the first thin film photovoltaic module 1 is the same as that of charged particles transmitted in the second carrier transmission layer of the second thin film photovoltaic module 3. The charged particles are holes or electrons.

In some embodiments, the first thin film photovoltaic module 1 and the second thin film photovoltaic module 3 independently include light-transmitting regions 5 and thin film regions 6 that are striped and alternately spaced apart. The light-transmitting area 5 of the first thin film photovoltaic module 1 and the light-transmitting area 5 of the second thin film photovoltaic module 3 are overlapped or at least partially crossed. The width of the light-transmitting region 5 is 100-2000 μm, and the width of the thin film region 6 is 100-18000 μm. The thin film coatings of the first thin film photovoltaic module 1 and the second thin film photovoltaic module 3 can be opaque coatings or partially transparent coatings, and different light transmittance and light transmittance patterns can be realized according to different application scenes and design requirements.

The utility model has wide application range, can be used in the fields of double-sided power generation stations, building facade curtain walls, building daylighting roofs and the like, and improves the power generation efficiency. According to different application scenes, the first thin film photovoltaic module 1 and the second thin film photovoltaic module 3 can be connected in parallel or in series. For example, when the power generation assembly is in an environment with similar light intensity on two sides, the power generation assembly can be arranged in parallel or in series; when the power generation assembly is in an environment with larger difference of the received light intensities on two sides, the first thin film photovoltaic assembly 1 and the second thin film photovoltaic assembly 3 are required to be connected in parallel, so that the risk of current mismatch of the two is reduced.

Compared with a common light-transmitting film component adopted by building design, the generating capacity of the utility model is improved by nearly one time, and the generating gain principle mainly comprises:

(1) The power generation film coating directly provided with the gaps is adopted, so that the power generation film coating has excellent weak light performance, and the indoor and outdoor equivalent power generation efficiency is realized;

(2) Even if the lamp is not turned on indoors, outdoor light penetrates into the light-transmitting area 5 of the second thin film photovoltaic module 3 through the light-transmitting area 5 of the first thin film photovoltaic module 1 and then enters indoors, so that the indoor side of the second thin film photovoltaic module 3 can also receive illumination, and further, the indoor side thin film can generate certain power generation efficiency;

(3) Considering that there is no current mismatch influence in the parallel connection, because the voltage has almost no influence in a certain illumination intensity range, but the current is strongly related to the illumination intensity, therefore, the voltage of the film photovoltaic module on the indoor side is consistent with the voltage of the film photovoltaic module on the outdoor side, and the current on the indoor side is lower than the voltage on the outdoor side, so that the generated energy can be maximized when the circuit design of the first film photovoltaic module 1 and the second film photovoltaic module 3 adopts a parallel connection structure.

In some embodiments, the bus bar 4 includes a metal substrate 7, and a first conductive adhesive layer 8 and a second conductive adhesive layer 9 respectively disposed on two side surfaces of the metal substrate 7, where the first conductive adhesive layer 8 and the second conductive adhesive layer 9 respectively connect the first thin film photovoltaic module 1 and the second thin film photovoltaic module 3. The surface of the packaging adhesive film layer 2 is provided with a preformed hole 10, the bus bar 4 is arranged in the preformed hole 10, the first conductive adhesive layer 8 and the second conductive adhesive layer 9 respectively extend away from the direction of the metal substrate 7 along the thickness direction of the packaging adhesive film layer 2, and extend out of the preformed hole 10. The distance from the reserved hole 10 to the outer edge of the packaging adhesive film layer 2 is 10-70 mm. The width of the bus bar 4 is 2-10 mm, and the width of the preformed hole 10 is larger than the width of the bus bar 4. The thickness of the bus bar 4 beyond the packaging adhesive film layer 2 is 20-100 μm along the thickness direction of the packaging adhesive film layer 2. That is, the sum of the thickness of the first conductive adhesive layer 8 extending out of the preformed hole 10 and the thickness of the second conductive adhesive layer 9 extending out of the preformed hole 10 is 20 to 100 μm.

The film photovoltaic double-sided power generation assembly further comprises a bus outgoing line 11 and a junction box 12, one end of the bus outgoing line 11 is connected with the junction box 12, and the other end of the bus outgoing line extends into the packaging adhesive film layer 2 to be connected with the bus bar 4. The bus bar 4 is used for conducting circuit connection between the first thin film photovoltaic module 1 and the second thin film photovoltaic module 3 so as to be used together by the positive electrode and the negative electrode of the first thin film photovoltaic module 1 and the second thin film photovoltaic module 3, so that current collection is realized, the current is led out by conductive adhesive, and the use of the bus bar is reduced.

To help those skilled in the art to better understand the overall technical solution and working procedure of the present utility model, the present utility model exemplarily provides the following specific circuit connection method for the first thin film photovoltaic module 1 and the second thin film photovoltaic module 3:

s1, respectively pasting two bus bars 4 on the positive electrode and the negative electrode of a first film photovoltaic module 1;

S2, covering a layer of packaging film layer on the bus bar 4, so that the preformed hole 10 of the packaging film layer corresponds to the bus bar 4, the width of the preformed hole 10 is slightly larger than that of the bus bar 4, the bus bar 4 is ensured to completely penetrate through the surface of the packaging film layer after being covered, and the bus bar 4 is slightly higher than the packaging film layer;

And S3, placing a second thin film photovoltaic module 3, wherein the anode and the cathode of the second thin film photovoltaic module 3 are respectively contacted with the bus bar 4, and reinforcing circuit connection between two pieces of glass after high-temperature high-pressure lamination.

Example 1

The embodiment provides a film photovoltaic double-sided power generation assembly, which comprises a first film photovoltaic assembly 1, a packaging adhesive film layer 2 and a second film photovoltaic assembly 3 which are sequentially laminated as shown in fig. 1 and 2. The first thin film photovoltaic module 1 comprises an electrode layer I101, a first current carrier transmission layer I102, a thin film power generation layer I103, a second current carrier transmission layer I104 and a glass substrate I105 which are sequentially stacked outwards from a packaging adhesive film layer 2; the second thin film photovoltaic module 3 comprises an electrode layer II 301, a first carrier transmission layer II 302, a thin film power generation layer II 303, a second carrier transmission layer II 304 and a glass substrate II 305 which are sequentially stacked outwards from the packaging adhesive film layer 2. The types of carriers transmitted by the first carrier transmission layer I102 and the first carrier transmission layer II 302 are the same, the carriers transmitted by the second carrier transmission layer I104 and the second carrier transmission layer II 304 are the same, and the types of carriers transmitted by the first carrier transmission layer I102 and the second carrier transmission layer I104 are different.

As shown in fig. 3, the first thin film photovoltaic module 1 and the surface of the first thin film photovoltaic module 1 are independently scored to form light-transmitting areas 5 and thin film areas 6 which are striped and alternately distributed at intervals, and the light-transmitting areas 5 of the first thin film photovoltaic module 1 and the light-transmitting areas 5 of the second thin film photovoltaic module 3 are mutually overlapped. The width of the light-transmitting region 5 was 200 μm and the width of the thin film region 6 was 1000 μm.

As shown in fig. 4, two preformed holes 10 are respectively formed at two ends of the surface of the packaging adhesive film layer 2, the distance from the preformed holes 10 to the outer edge of the packaging adhesive film layer 2 is 30mm, and a bus bar 4 with the width of 5mm is arranged in each preformed hole 10. As shown in fig. 5, the bus bar 4 includes a metal substrate 7, and a first conductive adhesive layer 8 and a second conductive adhesive layer 9 respectively located on two side surfaces of the metal substrate 7, as shown in fig. 1, along a thickness direction of the packaging adhesive layer 2, the first conductive adhesive layer 8 and the second conductive adhesive layer 9 respectively extend in a direction away from the metal substrate 7, extend out of the preformed hole 10, and respectively connect the first thin film photovoltaic module 1 and the second thin film photovoltaic module 3.

The film photovoltaic double-sided power generation assembly further comprises two bus outgoing lines 11 and two junction boxes 12, one end of each bus outgoing line 11 is connected with each junction box 12, the other end of each bus outgoing line extends into the packaging adhesive film layer 2 to connect with the bus bar 4, and the two junction boxes 12 are respectively located on two sides of the film photovoltaic double-sided power generation assembly.

Example 2

The present embodiment provides a thin film photovoltaic double-sided power generation assembly, which is different from embodiment 1 in that: as shown in fig. 6, the light-transmitting region 5 of the first thin film photovoltaic module 1 and the light-transmitting region 5 of the second thin film photovoltaic module 3 are disposed to intersect each other, and the rest of the structure is the same as that of example 1.

Example 3

The present embodiment provides a thin film photovoltaic double-sided power generation assembly, which is different from embodiment 1 in that: the first thin film photovoltaic module 1 and the first thin film photovoltaic module 1 are opaque, and the rest of the structure is the same as that of the embodiment 1.

The applicant declares that the above is only a specific embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and it should be apparent to those skilled in the art that any changes or substitutions that are easily conceivable within the technical scope of the present utility model disclosed by the present utility model fall within the scope of the present utility model and the disclosure.

Claims (10)

1. The film photovoltaic double-sided power generation assembly is characterized by comprising a first film photovoltaic assembly, a packaging adhesive film layer and a second film photovoltaic assembly which are sequentially stacked, wherein bus bars are arranged inside the packaging adhesive film layer and penetrate through the packaging adhesive film layer to connect the first film photovoltaic assembly and the second film photovoltaic assembly.

2. The thin film photovoltaic double-sided power generation assembly of claim 1, wherein the first thin film photovoltaic assembly and the second thin film photovoltaic assembly independently comprise a glass substrate and a thin film coating disposed between the packaging adhesive film layer and the glass substrate.

3. The thin-film photovoltaic double-sided power generation assembly of claim 2, wherein the thin-film coating comprises an electrode layer, a first carrier transport layer, a thin-film power generation layer and a second carrier transport layer which are sequentially stacked from the packaging adhesive film layer to the glass substrate.

4. The thin film photovoltaic double-sided power generation assembly of claim 2, wherein the first thin film photovoltaic assembly and the second thin film photovoltaic assembly independently comprise light transmissive regions and thin film regions in stripes and alternately spaced apart.

5. The thin film photovoltaic double-sided power generation assembly of claim 4, wherein the width of the light-transmitting region is 100-2000 μιη;

The width of the film region is 100-18000 mu m.

6. The thin film photovoltaic double-sided power generation assembly of claim 4, wherein the light transmission region of the first thin film photovoltaic assembly and the light transmission region of the second thin film photovoltaic assembly are disposed overlapping or at least partially intersecting each other.

7. The thin film photovoltaic double-sided power generation assembly of claim 1, wherein the bus bar comprises a metal substrate, and a first conductive adhesive layer and a second conductive adhesive layer respectively positioned on two side surfaces of the metal substrate, wherein the first conductive adhesive layer is connected with the first thin film photovoltaic assembly, and the second conductive adhesive layer is connected with the second thin film photovoltaic assembly.

8. The thin film photovoltaic double-sided power generation assembly of claim 7, wherein the packaging adhesive film layer is provided with a preformed hole, the bus bar is located in the preformed hole, and the first conductive adhesive layer and the second conductive adhesive layer respectively extend in a direction away from the metal substrate and extend out of the preformed hole along the thickness direction of the packaging adhesive film layer.

9. The thin film photovoltaic double-sided power generation assembly of claim 8, wherein the distance from the preformed hole to the outer edge of the packaging adhesive film layer is 10-70 mm;

The width of the bus bar is 2-10 mm;

And the thickness of the bus bar exceeding the packaging adhesive film layer is 20-100 mu m along the thickness direction of the packaging adhesive film layer.

10. The assembly of claim 1, further comprising a bus bar and a junction box, wherein one end of the bus bar is connected to the junction box, and the other end of the bus bar extends into the packaging adhesive film layer to connect the bus bar.