Hollow photovoltaic power generation assembly and photovoltaic building integrated building

Abstract

The utility model discloses a hollow photovoltaic power generation assembly and a photovoltaic building integrated building, the photovoltaic power generation assembly comprises a photovoltaic power generation unit, a hollow structure unit and a glass unit, the photovoltaic power generation unit is provided with a first lead-out hole adjacent to the hollow structure unit, and a junction box is arranged in the hollow structure unit. The junction box covers the first lead-out hole, and the height of the junction box is smaller than or equal to the thickness of the hollow structure unit; the glass unit is provided with a second lead-out hole, the second lead-out hole is used for leading out a power line of the junction box, and the second lead-out hole is filled with a second sealing unit. According to the utility model, the bus bar is introduced into the first lead-out hole of the photovoltaic power generation unit, so that the junction box is arranged behind the assembly, and through the arrangement of the second lead-out hole and the second sealing unit, the sealing performance of the photovoltaic power generation assembly is improved, and the sealing effect at the junction box meets the safety requirement of the photovoltaic power generation assembly for buildings; and the application of the hollow photovoltaic power generation assembly can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic building integration, in particular to a hollow photovoltaic power generation component and a photovoltaic building integration building. Background Art

[0002] With the promotion and application of building integrated photovoltaics (BIPV), photovoltaic curtain walls have become the first choice for public buildings. On the basis of meeting the original building energy conservation, photovoltaic chips are implanted. The existing photovoltaic power generation components adopt a hollow structure with a sealed dry gas cavity inside. It has low thermal conductivity, good sound insulation, good thermal insulation function, and can generate electricity, providing a new option for zero-carbon buildings or even negative energy buildings.

[0003] The existing hollow photovoltaic power generation assembly includes a glass unit 3, a hollow structure unit 2 and a photovoltaic power generation unit 1, wherein the photovoltaic power generation unit 1 includes a plurality of photovoltaic cell chips connected in series and / or in parallel, which are used to convert solar energy into electrical energy, and the hollow structure unit 2 is a glass unit and a photovoltaic power generation unit bonded together with a spacer frame to form a hollow space with a sealed periphery. After each photovoltaic cell chip converts solar energy into electrical energy, the current is collected through a busbar, and then the collected current is led out through a junction box, and then inverted into alternating current in strings externally for daily use. According to the different positions of the photovoltaic power generation unit and the hollow structure unit, the hollow photovoltaic power generation assembly is divided into a pre-power generation photovoltaic assembly and a post-power generation photovoltaic assembly, and the product structures are as follows: Figure 1 and Figure 2 Among them, the photovoltaic power generation unit of the photovoltaic module with post-power generation has an additional piece of Low-E glass in front of it to block the sunlight, resulting in a decrease in visible light transmittance, which in turn causes a reduction in power generation efficiency of more than 20%. Therefore, in order to improve the power generation efficiency of photovoltaic modules, the use of hollow photovoltaic power generation modules with pre-power generation is a better choice.

[0004] During the preparation process, it is necessary to install a junction box on the hollow photovoltaic power generation component in front of the power generation. There are usually two ways to set the existing junction box. One way is to set the junction box on the edge of the photovoltaic power generation component structure. However, setting the junction box on the edge is not safe and cannot obtain electrical certification. Another way is to set the junction box on the back plate of the photovoltaic power generation component. For example, CN 216873156 U discloses a solar cell hollow component, including a front plate glass, a battery cell and a junction box. The hollow component also includes an intermediate layer glass and an inner layer glass. The battery cell is sandwiched between the front plate glass and the intermediate layer glass. The two ends of the inner layer glass are respectively connected to the side of the intermediate layer glass away from the battery cell through a sealing frame structure, and the sealing frame structure and the inner layer glass and the intermediate layer glass are enclosed to form a hollow cavity. The junction box is set on the side of the inner layer glass away from the battery cell. The intermediate layer glass and the inner layer glass are both provided with a through hole connecting the hollow cavity and used to pass through the bus bar. The battery cell is connected to the junction box through the bus bar. The junction box is set on the back of the inner glass to facilitate heat release and replacement. The above-mentioned disclosed photovoltaic power generation assembly sets the junction box on the back of the inner glass, which is convenient for heat release and replacement. However, this method makes it difficult to seal the junction of the junction box and the sealing effect is poor, which further affects the sealing effect of the hollow structural unit, resulting in poor heat insulation and sound insulation performance of the hollow structural unit. Therefore, it is necessary to redevelop a hollow photovoltaic power generation assembly structure. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that when the junction box is set on a back plate, the sealing at the bonding point of the junction box is difficult and the sealing effect is poor, resulting in poor heat insulation and sound insulation performance of the hollow structural unit, and to provide a hollow photovoltaic power generation component and a photovoltaic building integrated building.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0007] A hollow photovoltaic power generation component comprises, from the front to the back, a photovoltaic power generation unit, a hollow structure unit and a glass unit, wherein the photovoltaic power generation unit is provided with a first lead-out hole adjacent to the hollow structure unit, a junction box is provided in the hollow structure unit, the junction box covers the first lead-out hole, and the height of the junction box is less than or equal to the thickness of the hollow structure unit; the glass unit is provided with a second lead-out hole, the second lead-out hole is used for leading out the power cord of the junction box, and the second lead-out hole is filled with a second sealing unit.

[0008] In the technical solution of the utility model, the component includes a photovoltaic power generation unit, a hollow structure unit and a glass unit. A first lead-out hole is set on one side of the photovoltaic power generation unit for leading out the bus bar of the photovoltaic power generation unit. A junction box is set in the hollow structure unit. The height of the junction box is less than or equal to the thickness of the hollow structure unit, which can ensure that the junction box is completely located in the hollow structure unit, and the power line of the junction box is led out through the second lead-out hole. The second lead-out hole is filled with a second sealing unit for sealing the second lead-out hole, which can ensure the sealing at the lead-out hole. The utility model designs a hollow photovoltaic power generation component with pre-power generation, changes the direction of the bus bar of the photovoltaic power generation unit, and introduces the bus bar into the first lead-out hole of the photovoltaic power generation unit, so as to realize the junction box behind the component, and through the setting of the second lead-out hole and the second sealing unit, the sealing performance of the photovoltaic power generation component is improved. The sealing effect at the junction box meets the safety requirements of photovoltaic power generation components for buildings, which can greatly improve the application of hollow photovoltaic power generation components.

[0009] It should be noted that the front side refers to the front side of the hollow photovoltaic power generation component, that is, the light-receiving side of the photovoltaic cell chip in the photovoltaic power generation component, and the back side refers to the back side of the hollow photovoltaic power generation component, that is, the backlight side of the photovoltaic cell chip in the photovoltaic power generation component.

[0010] As a preferred solution of the utility model, the photovoltaic power generation unit includes a front plate, a plurality of photovoltaic cell chips connected in series and / or in parallel, and a back plate, the front plate and the photovoltaic cell chips are bonded together by a first adhesive film, the back plate and the photovoltaic cell chips are bonded together by a second adhesive film, and the first lead-out hole is arranged on the back plate. The light-receiving surface of the photovoltaic cell chip faces the front of the photovoltaic module.

[0011] As a preferred embodiment of the present invention, the photovoltaic cell chip is one of a crystalline silicon cell chip, a graphene thin film cell chip, a perovskite thin film cell chip, a cadmium telluride thin film cell chip or a copper indium gallium selenide thin film cell chip.

[0012] As a preferred solution of the utility model, the front plate is a front plate glass, the thickness of the front plate glass is 3 to 10 mm, and further, the front plate glass is ordinary white glass or ultra-white tempered glass or coated glass or colored glaze glass. Coated glass or colored glaze glass is to improve the appearance of the photovoltaic module, and the type of the front plate glass can be determined according to specific needs.

[0013] As a preferred solution of the utility model, the back panel is back panel glass, and the thickness of the back panel glass is 3-10 mm. Further, the back panel glass is one of ordinary white tempered glass, ultra-white tempered glass, coated glass, and colored glaze glass, and the type of the back panel glass can be determined according to specific needs. The back panel glass is drilled to obtain the first lead-out hole.

[0014] As a preferred embodiment of the utility model, the first adhesive film is one of EVA film, POE film, PVB film or SGP film; the second adhesive film is one of EVA film, POE film, PVB film or SGP film, and the first adhesive film and the second adhesive film can be the same or different. The first adhesive film and the second adhesive film can protect the photovoltaic cell chip and prevent the photovoltaic cell chip from cracking under stress, and can also improve the waterproof effect of the photovoltaic power generation unit and prevent moisture from affecting the conductive effect of the chip.

[0015] As a more preferred embodiment of the present invention, the thickness of the first adhesive film is 0.5 to 3 mm, and the thickness of the second adhesive film is 0.5 to 3 mm. The thicknesses of the first thick adhesive film and the second thick adhesive film are independent of each other and may be the same or different. The specific thickness is designed according to the requirements and performance of the photovoltaic module.

[0016] As a preferred solution of the utility model, a first sealing unit is provided in the first lead-out hole for sealing the first lead-out hole, thereby further improving the sealing effect of the photovoltaic power generation unit.

[0017] As a preferred solution of the utility model, the first lead-out hole and the second lead-out hole are arranged relative to each other. In the above technical solution, the first lead-out hole and the second lead-out hole are arranged relative to each other, and the second lead-out hole can cover the first lead-out hole, which can facilitate the lead-out of the power cord of the junction box. In some embodiments, for the overall project consideration, the position of the second lead-out hole can be designed at the position of the glass unit. This is to flexibly change the position of the second lead-out hole according to needs to improve applicability.

[0018] As a preferred embodiment of the utility model, the hollow structural unit includes a sealing frame and a first sealant. The sealing frame is bonded to the photovoltaic power generation unit and the glass unit to form a hollow space on the inner side of the sealing frame. The hollow space can be a vacuum or filled with an inert gas. A first sealant is provided on one side of the sealing frame close to the hollow space to seal the photovoltaic power generation unit and the glass.

[0019] As a preferred solution of the utility model, a hollow supporting structure is arranged in the hollow structural unit, and the junction box is located in the supporting structure. The supporting structure is hollow and can be used to place the junction box, playing the role of supporting the hollow structural unit.

[0020] As a preferred solution of the utility model, a third sealing unit is provided in the support structure to fill the space of the support structure. Through the above technical solution, the busbar passes through the first lead-out hole and is connected to the junction box outside. The third sealing unit plays a secondary sealing role to prevent the sealing effect at the first lead-out hole from deteriorating, and at the same time can prevent water vapor from entering, protecting the photovoltaic cell chip inside the photovoltaic power generation unit.

[0021] As a preferred solution of the present invention, the glass unit includes a first glass, which is one of ordinary white glass, ultra-white glass, colored glaze glass, coated glass, and laminated glass; preferably, the first glass is LOW-E coated glass.

[0022] As a preferred solution of the present invention, the glass unit includes a second glass and a third glass, and the second glass and the third glass are bonded together by a third adhesive film.

[0023] As a preferred solution of the present invention, the junction box is an integrated junction box or a split back-connected junction box.

[0024] The utility model also provides a photovoltaic building integrated building, comprising the hollow photovoltaic power generation component.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] The utility model proposes a hollow photovoltaic power generation component with pre-power generation, which changes the direction of the bus bar of the photovoltaic power generation unit and introduces the bus bar into the first lead-out hole of the photovoltaic power generation unit, thereby realizing a junction box behind the component, and through the arrangement of the second lead-out hole and the second sealing unit, the sealing performance of the photovoltaic power generation component is improved, which meets the safety requirements of photovoltaic power generation components for buildings, and at the same time improves the heat insulation and sound insulation performance of the component, which can greatly improve the application of the hollow photovoltaic power generation component, and the hollow photovoltaic power generation component has a simple structural design and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of a hollow photovoltaic power generation component after power generation;

[0028] Figure 2 A schematic diagram of the structure of a hollow photovoltaic power generation component placed before power generation;

[0029] Figure 3It is a cross-sectional schematic diagram of the hollow photovoltaic power generation component of the utility model.

[0030] Figure 4 This is a rear view of the hollow photovoltaic power generation component of the utility model;

[0031] Figure 5 It is a top view of the wiring part of the junction box in the utility model;

[0032] Figure 6 This is a cross-sectional view of the wiring part of the junction box in the utility model;

[0033] Markings in the figure: 1-photovoltaic power generation unit, 11-first lead-out hole, 12-front plate, 13-photovoltaic cell chip 14-back plate, 15-first adhesive film, 16-second adhesive film, 17-first sealing unit;

[0034] 2-hollow structural unit, 21-sealing frame, 22-first sealant, 23-supporting structural member, 24-third sealing unit;

[0035] 3-glass unit, 31-second lead-out hole, 32-second glass, 33-third glass, 34-third adhesive film, 35-second sealing unit;

[0036] 4-junction box, 41-junction box housing, 42-bus bar inlet, 43-conductive copper sheet, 44-welding point, 45-junction box lead wire. DETAILED DESCRIPTION

[0037] In order to more clearly describe the utility model's purpose, technical solutions and technical effect advantages in the specific implementation cases of the utility model, the solutions in the specific embodiments will be described in detail in conjunction with the drawings of the specification of the utility model. The specific technical solutions involved in the following specific embodiments are only for the purpose of clearly and completely describing the innovative technical solutions of the utility model. They are only part of the specific implementation plans that can be adopted by the utility model, not all the embodiments, and should not be understood as limitations on the innovative solutions of the utility model. Any solution that adopts the same utility model concept of the utility model should be included in the protection scope of the utility model.

[0038] Secondly, the description of the drawings in the specific embodiments of the utility model is only for the convenience of technicians to understand the solution of the utility model. The partial details in the drawings are for the convenience of clearly presenting the technical solution. It should not be considered that all technical features in the drawings must be included in the specific implementation cases, and the detailed features in the drawings should not be identified as additional limitations on the innovative technical solution of the utility model. The components in the various embodiments described and shown in the drawings can be combined and arranged according to different configurations. These changes in combination and arrangement should be identified as part of the entire embodiment of the innovative solution of the utility model and included in the scope of protection of the utility model.

[0039] In summary, the schemes or descriptions presented in the specific embodiments and drawings of the utility model are not intended to limit the scope of protection claimed, but are merely selected embodiments / cases to help technicians understand the relevant innovative solutions. Based on these embodiments, all other equivalent or parallel embodiments obtained by those skilled in the art without creative work are within the scope of protection claimed by the utility model.

[0040] It should be noted that, in the description of the specific embodiments of the present utility model, unless otherwise specified, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship when the product / equipment / device of the utility model is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present utility model.

[0041] In addition, the expressions “first”, “second”, “third”, etc. that appear in the terms are merely descriptions used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0042] In addition, in the description of the embodiments of the present invention, "several", "multiple" and "a number" represent at least 2. It can be any number such as 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0043] In addition, in the description of the technical solution of the utility model, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect" and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading and other commonly used connection means in the field. This connection can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components.

[0044] Example 1

[0045] like Figure 3-4 A hollow photovoltaic power generation assembly shown includes a photovoltaic power generation unit 1, a hollow structure unit 2 and a glass unit 3 from the front to the back. The photovoltaic power generation unit 1 is provided with a first lead-out hole 11 adjacent to the hollow structure unit 2. A junction box 4 is provided in the hollow structure unit 2. The junction box 4 covers the first lead-out hole 11. The height of the junction box 4 is less than or equal to the thickness of the hollow structure unit 2. The glass unit 3 is provided with a second lead-out hole 31. The second lead-out hole 31 is used for leading out the power line of the junction box. The second lead-out hole 31 is filled with a second sealing unit 35. The front side refers to the light-receiving surface of the photovoltaic cell chip 13, and the back side refers to the backlight surface of the photovoltaic cell chip 13.

[0046] like Figure 3 As shown, the photovoltaic power generation unit 1 includes a front plate 12, a plurality of photovoltaic cell chips 13 connected in series or in parallel, and a back plate 14. The front plate 12 and the photovoltaic cell chip 13 are bonded together by a first adhesive film 15, and the back plate 14 and the photovoltaic cell chip 13 are bonded together by a second adhesive film 16. The first lead-out hole 11 is provided on the back plate 14. The light-receiving surface of the photovoltaic cell chip 13 faces the front of the photovoltaic module. The photovoltaic cell chip 13 is one of a crystalline silicon cell chip, a graphene thin film cell chip, a perovskite thin film cell chip, a cadmium telluride thin film cell chip, or a copper indium gallium selenide thin film cell chip. The front plate 12 is a front plate 12 glass, which is a plain white glass or an ultra-white tempered glass or a coated glass or a colored glaze glass, preferably an ultra-white tempered glass, and the back plate 14 is a back plate 14 glass, which is a plain white tempered glass, an ultra-white tempered glass, a coated glass, or a colored glaze glass. The back plate 14 glass is drilled to obtain a first lead-out hole 11, and the positive and negative bus bars of the photovoltaic cell chip 13 pass through the first lead-out hole 11 and are connected to the junction box 4. The first adhesive film 15 is one of an EVA adhesive film, a POE adhesive film, a PVB adhesive film, or an SGP adhesive film, and the first adhesive film 15 is preferably a photovoltaic grade PVB adhesive film; the second adhesive film 16 is one of an EVA adhesive film, a POE adhesive film, a PVB adhesive film, or an SGP adhesive film, and is preferably a photovoltaic grade PVB. The first adhesive film 15 and the second adhesive film 16 can be the same or different.

[0047] The glass unit 3 includes a second glass 32 and a third glass 33 , and the second glass 32 and the third glass 33 are bonded together by a third adhesive film 34 .

[0048] In some embodiments, a first sealing unit 17 is provided in the first lead-out hole 11 for sealing the first lead-out hole 11, further improving the sealing effect of the photovoltaic power generation unit 1. The first lead-out hole 11 and the second lead-out hole 31 are arranged opposite to each other, so that the second lead-out hole 31 can cover the first lead-out hole 11, which can facilitate the lead-out of the power cord of the junction box.

[0049] The hollow structure unit 2 includes a sealing frame 21 and a first sealant 22. The sealing frame 21 is bonded to the photovoltaic power generation unit 1 and the glass unit 3 to form a hollow space on the inner side of the sealing frame 21. The hollow space can be a vacuum or filled with an inert gas. The first sealant 22 is provided on one side of the sealing frame 21 close to the hollow space to seal the photovoltaic power generation unit 1 and the glass. In this embodiment, the sealing frame 21 is one of an aluminum bar, a warm edge bar, a stainless steel bar, etc., preferably a warm edge bar, and the first sealant 22 is butyl rubber.

[0050] Specifically, a hollow support structure 23 is provided in the hollow structure unit 2, the junction box 4 is located in the support structure 23, and a third sealing unit 24 is provided in the support structure 23 to fill the space of the support structure 23. The support structure 23 is hollow and can be used to place the junction box 4. Specifically, the support structure 23 is a nylon ring, which isolates the hollow space from the junction box 4 without affecting the assembly of the hollow photovoltaic power generation component. The third sealing unit 24 is used for filling and sealing, which can protect the hollow structure unit 2 and prevent the entry of water vapor. At the same time, the third sealing unit 24 uses a potting glue with good heat dissipation effect, which is beneficial to the heat dissipation of the junction box 4, and the problem of heat failure of the junction box 4 will not occur.

[0051] The utility model designs a hollow photovoltaic power generation component with pre-power generation. The direction of the bus bar of the photovoltaic power generation unit 1 is changed by opening a hole in the glass, and the bus bar is introduced into the first lead-out hole 11 of the photovoltaic power generation unit 1. The wiring is carried out in a back-connected manner, thereby realizing a back-connected junction box 4 on the component, avoiding the poor bonding effect between the junction box 4 and the side of the glass, thereby avoiding the phenomenon of falling off during transportation and use, and can protect the integrity of the photovoltaic glass to a great extent. In addition, the sealing performance of the photovoltaic power generation component is improved by the provision of the second lead-out hole 31 and the second sealing unit 35. The sealing effect at the junction box 4 meets the safety requirements of photovoltaic power generation components for buildings, and can greatly improve the application of hollow photovoltaic power generation components.

[0052] Example 2

[0053] This embodiment is similar to Embodiment 1, except that the glass unit 3 of this embodiment includes a first glass, which is one of ordinary white glass, ultra-white glass, colored glaze glass, coated glass, and laminated glass; preferably, the first glass is LOW-E coated glass.

[0054] Example 3

[0055] This embodiment is similar to the embodiment 1, except that this embodiment also discloses the specific structure of the split back-connected junction box, and the junction box 4 is customized as a special junction box to meet the requirement that the height of the junction box is less than or equal to the thickness of the hollow structure unit 2. The structure is as follows: Figure 5 , Figure 6 As shown, it includes a junction box housing 41, a conductive copper sheet 43 and a junction box lead 45, and a welding point 44 for welding with the bus bar is set on the conductive copper sheet 43. When the junction box is bonded to the back plate glass, photovoltaic grade sealant is used for bonding, and then the positive and negative bus bars pass through the bus bar inlet 44 and are welded to the positive and negative welding points 44 of the junction box, and other gaps in the junction box are filled with photovoltaic grade sealant.

[0056] For those skilled in the art, when understanding the solutions described in the specific embodiments of the present utility model, they can refer to the conventional technical manuals in the field. At the same time, for the places where the above-mentioned terms appear, they can make appropriate understandings or adjustments for reference, and deduce the implementation of the same or similar technical solutions without paying any creative labor.

[0057] The above embodiments describe only the basic principles, main features and / or advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and the utility model content part of the specification only describe the principles or specific cases of the utility model. Without departing from the essence of the innovative idea of ​​the utility model, the innovative scheme of the utility model may also undergo various changes and improvements, and these changes and improvements all fall within the scope of protection required by the utility model.

Claims

1. A hollow photovoltaic power generation component, characterized in that: The invention comprises, from the front to the back, a photovoltaic power generation unit (1), a hollow structure unit (2) and a glass unit (3); the photovoltaic power generation unit (1) is provided with a first lead-out hole (11) adjacent to the hollow structure unit (2); a junction box is provided in the hollow structure unit (2); the junction box covers the first lead-out hole (11); the height of the junction box is less than or equal to the thickness of the hollow structure unit (2); the glass unit (3) is provided with a second lead-out hole (31); the second lead-out hole (31) is used for leading out a power line of the junction box; the second lead-out hole (31) is filled with a second sealing unit (35).

2. The hollow photovoltaic power generation assembly according to claim 1, characterized in that: The photovoltaic power generation unit (1) comprises a front plate (12), a plurality of photovoltaic cell chips (13) connected in series and / or in parallel, and a back plate (14); the front plate (12) and the photovoltaic cell chips (13) are bonded together via a first adhesive film (15); the back plate (14) and the photovoltaic cell chips (13) are bonded together via a second adhesive film (16); and the first lead-out hole (11) is arranged on the back plate (14).

3. The hollow photovoltaic power generation assembly according to claim 2, characterized in that: The front plate (12) is a front plate (12) glass, the thickness of the front plate (12) glass is 3 to 10 mm, and the front plate (12) glass is ordinary white glass or ultra-white tempered glass or coated glass or colored glaze glass; The back panel (14) is a back panel glass, the thickness of the back panel glass is 3-10 mm, and the back panel glass is one of ordinary white tempered glass, ultra-white tempered glass, coated glass, and colored glaze glass.

4. The hollow photovoltaic power generation assembly according to claim 2, characterized in that: The first adhesive film (15) is one of EVA adhesive film, POE adhesive film, PVB adhesive film or SGP adhesive film, and the second adhesive film (16) is one of EVA adhesive film, POE adhesive film, PVB adhesive film or SGP adhesive film.

5. The hollow photovoltaic power generation assembly according to claim 1, characterized in that: A first sealing unit (17) is provided in the first outlet hole (11) and is used to seal the first outlet hole (11).

6. The hollow photovoltaic power generation assembly according to claim 1, characterized in that: The hollow structural unit (2) comprises a sealing frame (21) and a first sealing adhesive (22); the sealing frame (21) is bonded to the photovoltaic power generation unit (1) and the glass unit (3) to form a hollow space inside the sealing frame (21); the hollow space is a vacuum or filled with an inert gas; the first sealing adhesive (22) is provided on one side of the sealing frame (21) close to the hollow space, so that the photovoltaic power generation unit (1) and the glass are sealed and connected.

7. The hollow photovoltaic power generation assembly according to claim 1 or 6, characterized in that: A hollow supporting structure member (23) is arranged in the hollow structural unit (2), and the junction box is located in the supporting structure member (23).

8. The hollow photovoltaic power generation assembly according to claim 7, characterized in that: A third sealing unit (24) is arranged in the supporting structure (23) and is used to fill the space of the supporting structure (23).

9. The hollow photovoltaic power generation assembly according to claim 1, characterized in that: The glass unit (3) comprises a second glass (32) and a third glass (33), and the second glass (32) and the third glass (33) are bonded together by a third adhesive film (34).

10. A photovoltaic building integrated building, characterized in that: A hollow photovoltaic power generation component comprising any one of claims 1-9.

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