Light cadmium telluride film power generation glass

Abstract

The utility model discloses light cadmium telluride thin film power generation glass, which belongs to the technical field of cadmium telluride thin film power generation glass, and comprises a power generation glass body, an aluminum frame and an aluminum back rib, the power generation glass body is arranged in the aluminum frame, two ends of the aluminum back rib are fixed on long sides of the aluminum frame through bolts and are parallel to short sides of the aluminum frame, and the aluminum back rib is arranged in the aluminum frame. The aluminum back rib is connected with the power generation glass body through the structural adhesive; the power generation glass body is sequentially provided with TCO glass, a coating film layer, an extraction electrode assembly layer, an EVA adhesive film and a KPC backboard from bottom to top. And a fluorine-containing coating film layer, a PET (Polyethylene Terephthalate) layer and a PVDF (Polyvinylidene Fluoride) fluorine film layer are sequentially arranged on one surface, deviating from the EVA adhesive film, of the KPC back plate along the direction from the TCO glass and the coating film layer to the extraction electrode assembly layer. The aluminum frame and the aluminum back ribs are adopted, so that the overall strength is improved, corners are protected, and more installation modes can be matched; the KPC backboard is used in the structure, the overall weight is reduced, carrying and mounting are convenient, the strength requirement of the mounting structure is reduced, the structure is suitable for low-load area mounting, and the income is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of cadmium telluride thin film power generation glass, and particularly relates to a lightweight cadmium telluride thin film power generation glass. Background Art

[0002] The photovoltaic industry has developed rapidly in recent years. Among them, cadmium telluride, as an important semiconductor material, is an important material for manufacturing power generation glass due to its stable performance and high light absorption coefficient. The power generation glass made of cadmium telluride has high power generation efficiency, small loss, and can generate electricity even in low-light environments. Therefore, it is widely used in the field of building photovoltaic integration, which can promote the development of green buildings and achieve energy conservation and emission reduction in buildings.

[0003] In the prior art, the power generation glass made of cadmium telluride is a double-glass cadmium telluride thin film power generation glass, which uses the near-space sublimation method for cadmium telluride thin film deposition. Since the backplane uses semi-tempered glass, the weight of a double-glass cadmium telluride thin film power generation glass reaches 31.5 kg, which is not easy to carry, and has high requirements for the strength of the installation structure, and is not suitable for installation in low-load areas. The double-glass cadmium telluride thin film power generation glass is a frameless power generation glass, which is easy to be bumped and damaged during transportation and installation.

[0004] Therefore, aiming at the problems existing in the prior art, it is urgent to provide a lightweight cadmium telluride thin film power generation glass to overcome the above-mentioned shortcomings of the prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a lightweight cadmium telluride thin film power generation glass, which is used to solve the problems of heavy weight, difficult to carry, easy to be bumped and damaged during transportation and installation, high requirements for the strength of the installation structure, and not suitable for installation in low-load areas in the prior art.

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

[0007] A lightweight cadmium telluride thin film power generation glass, comprising a power generation glass body, an aluminum frame and aluminum back ribs. The power generation glass body is arranged inside the aluminum frame. Both ends of the aluminum back ribs are fixed to the long sides of the aluminum frame through bolts and are parallel to the short sides of the aluminum frame. The aluminum back ribs are connected to the power generation glass body through structural adhesive.

[0008] The power generation glass body is sequentially provided with a TCO glass and a coating film layer, a lead-out electrode assembly layer, an EVA film and a KPC backplane from bottom to top.

[0009] On the side of the KPC backplane facing away from the EVA film, a fluorine-containing coating film layer, a PET layer and a PVDF fluorine film layer are sequentially arranged in the direction from the TCO glass and the coating film layer to the lead-out electrode assembly layer.

[0010] Based on the above disclosure, the lightweight cadmium telluride thin-film power generation glass includes a power generation glass body, an aluminum frame, and aluminum back ribs. The power generation glass is disposed within the aluminum frame. The two ends of the aluminum back ribs are fixed to the long sides of the aluminum frame and are parallel to the short sides of the aluminum frame. They are connected to the power generation glass body through structural adhesive. This design increases the overall strength of the power generation glass, protects the corners of the power generation glass, and avoids bump damage during transportation and installation. The utility model adopts a KPC backplane, which can resist ultraviolet rays, high temperature, severe cold, and humidity, has strong thermal stability and hot spot durability, and at the same time reduces the overall weight of the power generation glass, facilitating handling and machine transportation, and increasing the selection of products in low-load areas.

[0011] As a further technical solution of the utility model, the aluminum frame includes 4 window frame profiles connected end to end in sequence.

[0012] As a further technical solution of the utility model, the window frame profiles are connected by corner codes, and the aluminum frame is connected to the power generation glass body through structural adhesive.

[0013] As a further technical solution of the utility model, there are two aluminum back ribs, which are arranged at intervals in the middle of the aluminum frame.

[0014] As a further technical solution of the utility model, the lead-out electrode assembly layer includes insulating tape, drainage strips, and busbars.

[0015] As a further technical solution of the utility model, it further includes a junction box, and the junction box is connected to the busbar.

[0016] As a further technical solution of the utility model, the aluminum frame is treated by an anodic oxidation process.

[0017] As a further technical solution of the utility model, the KPC backplane is treated by a thin-film composite and coating process.

[0018] As a further technical solution of the utility model, the weight is 20.5 kg.

[0019] The beneficial effects of the utility model:

[0020] (1) An aluminum frame is provided at the outer edge of the power generation glass body of the lightweight cadmium telluride thin-film power generation glass. Two aluminum back ribs are arranged at intervals in the middle of the aluminum frame. The aluminum back ribs are fixed to the long side of the aluminum frame and are parallel to the short side of the aluminum frame. The part in contact with the power generation glass body is connected through structural adhesive, which increases the overall strength of the lightweight cadmium telluride thin-film power generation glass. At the same time, the aluminum frames are connected end to end by corner codes. The aluminum frame is connected to the power generation glass body through structural adhesive to prevent water vapor from invading. It adopts an anodic oxidation process, has the advantages of anti-oxidation and corrosion resistance, can extend the service life of the power generation glass, and at the same time protects the corners of the power generation glass, avoiding being knocked and damaged during transportation and installation, facilitating machine transportation, and can match more installation methods, including but not limited to installation with press blocks and jigs, providing more product choices for low-load areas and increasing revenue.

[0021] (2) Replace the original semi-tempered glass with a KPC backplane, and adopt a thin-film composite and coating process, which reduces the overall weight of the power generation glass. At the same time, it has the characteristics of resistance to ultraviolet rays, high temperature, severe cold, humid environment and corrosion, can meet the ultraviolet aging requirements of more than 200 kWh / m 2 , reduces the requirements for the installation structure strength, and is suitable for installation in low-load areas. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the laminated structure of the power generation glass body in this embodiment;

[0024] Figure 2 It is a schematic diagram of the structure of the aluminum frame and the aluminum back rib in this embodiment;

[0025] Figure 3 It is a schematic diagram of the structure of the insulating tape, the drainage strip and the bus bar in this embodiment.

[0026] Reference numerals: 1, TCO glass and coating film layer; 2, lead-out electrode assembly layer; 3, EVA film; 4, KPC backplane; 5, aluminum frame; 6, aluminum back rib; 7, junction box; 8, insulating tape; 9, drainage strip; 10, bus bar. Detailed Embodiments

[0027] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted here that the description of these embodiments is for helping to understand the present utility model, but does not constitute a limitation to the present utility model. The specific structural and functional details disclosed herein are only used to describe the embodiments of the present utility model. However, the present utility model can be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0028] Embodiment

[0029] As Figure 1 、 3 As shown, a lightweight cadmium telluride thin film power generation glass provided in the first aspect of this embodiment includes a power generation glass body, an aluminum frame 5 and an aluminum back rib 6. The power generation glass body is disposed within the aluminum frame 5. Both ends of the aluminum back rib 6 are fixed to the long sides of the aluminum frame 5 by bolts and are parallel to the short sides of the aluminum frame 5. The aluminum back rib 6 is connected to the power generation glass body through structural adhesive; the power generation glass body is sequentially provided with a TCO glass and a coating film layer 1, a lead-out electrode assembly layer 2, an EVA film 3 and a KPC backplane 4 from bottom to top; on the side of the KPC backplane 4 facing away from the EVA film 3, a fluorine-containing coating film layer, a PET layer and a PVDF fluorine film layer are sequentially disposed along the direction from the TCO glass and the coating film layer 1 to the lead-out electrode assembly layer 2.

[0030] Specifically, preferably, the TCO glass and its coating film layer 1 are chip glasses with cadmium telluride thin film layers. A laminator presses the TCO glass and the coating film layer 1, the lead-out electrode assembly layer 2, the EVA film 3 and the KPC backplane 4 into an integrated shape. The PVDF fluorine film in the KPC backplane 4 is a highly non-reactive thermoplastic fluoropolymer, and the PET is a thermoplastic polyester. Among them, the PVDF fluorine film has the characteristics of resistance to ultraviolet rays, high temperature, severe cold and humidity, and also has strong corrosion resistance. The fluorine-containing coating film layer has long-term thermal stability and hot spot durability.

[0031] Based on the above disclosed content, an aluminum frame is provided at the outer edge of the power generation glass body, and aluminum back ribs are arranged at intervals in the middle of the aluminum frame. The aluminum back ribs are fixed to the long sides of the aluminum frame and are parallel to the short sides of the aluminum frame. The contact part with the power generation glass body is connected through structural adhesive, which increases the overall strength of the lightweight cadmium telluride thin film power generation glass. At the same time, the aluminum frames are bonded with structural adhesive to prevent water vapor from invading; the KPC backplane 4 adopts a PVDF coating film, PET and a fluorine-containing coating film layer, so that the KPC backplane 4 also has the above characteristics, enabling it to be installed in low-load areas, and the KPC backplane 4 is lighter in weight, facilitating manual or machine handling and transportation.

[0032] As Figure 2As shown, a lightweight cadmium telluride thin-film power generation glass provided in the second aspect of this embodiment, wherein the aluminum frame 5 includes 4 window frame profiles connected end to end in sequence.

[0033] In a feasible implementation, the window frame profiles are connected by corner blocks, and the aluminum frame 5 is connected to the power generation glass body through structural adhesive.

[0034] Specifically, the 4 window frame profiles are connected end to end by corner blocks and are connected to the power generation glass body by structural adhesive, wrapping the corners of the power generation glass body to reduce corner bumps and damages.

[0035] Based on the above disclosure, the corner block has the characteristics of anti-collision and corrosion resistance, which can better protect the product. The structural adhesive has the characteristics of high strength, anti-peeling and impact resistance. Using the structural adhesive for bonding can prevent the intrusion of water vapor and extend the service life of the lightweight cadmium telluride thin-film power generation glass.

[0036] In a feasible implementation, there are two aluminum back ribs 6, which are arranged at intervals in the middle of the aluminum frame 5.

[0037] Based on the above disclosure, the aluminum back ribs 6 are arranged at intervals in the middle of the aluminum frame 5 to disperse the weight of the aluminum frame 5, increase the strength of the lightweight cadmium telluride thin-film power generation glass, and enable the power generation glass to match more installation methods.

[0038] In a feasible implementation, the lead-out electrode assembly layer 2 includes an insulating tape 8, a current-carrying bar 9 and a bus bar 10.

[0039] Specifically, preferably, the current-carrying bar 9 is closely attached to the short side of the coating film layer, the bus bar 10 is parallel to the long side of the coating film layer, both ends of the bus bar 10 are connected to the current-carrying bar 9 attached to the short side of the coating film layer, and an insulating tape 8 is attached to the side of the bus bar 10 in contact with the coating film layer. Among them, the insulating tape 8 in the lead-out electrode assembly layer 2 is used to insulate the bus bar 10 from the chip glass to prevent short circuit, and the current-carrying bar 9 in the lead-out electrode assembly layer 2 is used to lead out the current and voltage generated by the power generation glass.

[0040] In a feasible implementation, it further includes a junction box 7, and the junction box 7 is connected to the bus bar 10.

[0041] Based on the above disclosure, the bus bar 10 connects the current-carrying bars 9 with positive and negative polarities distributed, collects the current and voltage of the power generation glass at the position of the junction box 7. The junction box 7 is connected to the external circuit to conduct the current generated by the power generation glass. The junction box 7 protects the entire power generation system, plays the role of a current transfer station, and prevents short circuit and burning out of the power generation system.

[0042] In a feasible implementation, the aluminum frame 5 is processed by an anodic oxidation process.

[0043] Specifically, the aluminum frame 5 adopts the anodic oxidation process, which means that under the action of an applied current in a corresponding electrolyte and specific process conditions, a layer of oxide film is formed on the aluminum frame 5, enabling the aluminum frame 5 to have excellent anti-oxidation and corrosion resistance effects and extending the service life of the aluminum frame 5.

[0044] In a feasible embodiment, the KPC backplane 4 is processed by a thin film composite and coating process.

[0045] Based on the above disclosure, the fluorinated coating film layer, PET, and PVDF fluorine film are processed by a thin film composite and coating process to make the KPC backplane 4, enabling the KPC backplane 4 to become a composite material with characteristics of ultraviolet resistance, high temperature resistance, cold resistance, humidity resistance, and corrosion resistance, and having long-term thermal stability and hot spot durability, meeting the ultraviolet aging requirements of more than 200 kWh / m 2 above.

[0046] In a feasible embodiment, the weight of the lightweight cadmium telluride thin film solar glass is 20.5 kg.

[0047] Based on the above disclosure, the weight of the double-glass cadmium telluride thin film solar glass is reduced from 31.5 kg to 20.5 kg of the lightweight cadmium telluride thin film solar glass, which is convenient for machine and manual handling and installation. At the same time, it reduces the requirements for the installation structure strength, provides more product choices for low-load areas, increases the installation quantity, and brings more benefits.

[0048] In the third aspect of this embodiment, the aluminum frame 5 is installed on the outer edge of the solar glass body, and at the same time, aluminum back ribs 6 are installed at intervals in the middle. The aluminum back ribs 6 are fixed to the long side of the aluminum frame 5 by bolts and are parallel to the short side of the aluminum frame 5. The aluminum frames 5 at each side are connected end to end by corner codes, which are connected to the solar glass body through structural adhesive. At the same time, the part where the aluminum back ribs 6 contact the solar glass body is bonded with structural adhesive. The aluminum back ribs 6 can disperse the weight of the lightweight cadmium telluride thin film solar glass, thereby increasing the overall strength of the solar glass. The part bonded with structural adhesive can prevent water vapor from invading and damaging the internal circuit of the lightweight cadmium telluride thin film solar glass, avoiding the possibility of short circuit. At the same time, the aluminum frame 5 adopts the anodic oxidation process, making it have excellent anti-oxidation and corrosion resistance effects, protecting the corners of the solar glass body, being convenient for handling and installation, and suitable for more installation methods, including but not limited to clamp and fixture installation.

[0049] In the fourth aspect of this embodiment, the KPC backplane 4 is selected to replace the semi-tempered glass of the original double-glass cadmium telluride thin-film solar glass, reducing the mass of the solar glass from 31.5 kg to 20.5 kg, lowering the requirements for the installation structure strength. At the same time, the KPC backplane 4 is composed of a PVDF fluorine film, PET, and a fluorine-containing coating film layer through a thin-film composite and coating process, endowing the KPC backplane 4 with long-term thermal stability, hot plate durability, and corrosion resistance. Meanwhile, it is resistant to ultraviolet rays, high temperatures, severe cold, and humid environments, and can meet the ultraviolet aging requirements of 200 kWh / m 2 as mentioned above, facilitating handling and installation, and providing more product choices for low-load areas, thereby increasing revenue.

[0050] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lightweight cadmium telluride thin film power generation glass, characterized in that: It comprises a power generation glass body, an aluminum frame (5) and an aluminum back rib (6), wherein the power generation glass body is arranged in the aluminum frame (5), the two ends of the aluminum back rib (6) are fixed to the long sides of the aluminum frame (5) by bolts and are parallel to the short sides of the aluminum frame (5), and the aluminum back rib (6) is connected to the power generation glass body by structural adhesive; The power generation glass body is provided with TCO glass and coating film layer (1), lead-out electrode assembly layer (2), EVA film (3) and KPC back plate (4) in sequence from bottom to top; A fluorine-containing coating film layer, a PET layer and a PVDF fluorine film layer are sequentially arranged on a side of the KPC back plate (4) facing away from the EVA adhesive film (3) along a direction from the TCO glass and the coating film layer (1) to the lead-out electrode assembly layer (2).

2. The lightweight cadmium telluride thin film power generation glass according to claim 1, characterized in that: The aluminum frame (5) comprises four window frame profiles which are connected end to end in sequence.

3. The lightweight cadmium telluride thin film power generation glass according to claim 2, characterized in that: The window frame profiles are connected with each other by using angle brackets, and the aluminum frame (5) is connected with the power generation glass body by using structural adhesive.

4. The lightweight cadmium telluride thin film power generation glass according to claim 1, characterized in that: There are two aluminum back ribs (6) which are arranged at intervals in the middle of the aluminum frame (5).

5. The lightweight cadmium telluride thin film power generation glass according to claim 1, characterized in that: The lead-out electrode assembly layer (2) comprises an insulating tape (8), a lead bar (9) and a bus bar (10).

6. The lightweight cadmium telluride thin film power generation glass according to claim 5, characterized in that: It also includes a junction box (7), wherein the junction box (7) is connected to the bus bar (10).

7. The lightweight cadmium telluride thin film power generation glass according to claim 1, characterized in that: The aluminum frame (5) is processed by an anodizing process.

8. The lightweight cadmium telluride thin film power generation glass according to claim 1, characterized in that: The KPC backboard (4) is processed by thin film lamination and coating processes.

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