Solar cell packaging glass structure convenient to disassemble

Abstract

The utility model relates to a solar cell packaging glass structure convenient to disassemble. The solar cell packaging glass structure comprises a substrate, a packaging colloid, a glass plate, an air bag layer and a heat transfer mechanism, the packaging colloid wraps the photovoltaic module; the left and right sides of the substrate are provided with frames, the left and right frames fix a packaging group formed by the vertically assembled glass plates, the photovoltaic module and the substrate, the inner sides of the left and right frames are provided with air bag layers, and the air bag layers are connected with an air source; the heat transfer mechanism is arranged below the substrate; during working, a gap between the photovoltaic module and the glass plate is filled with the packaging colloid, the air bag layer is inflated, the air bag layer applies pressure to the glass plate so that the packaging group is firmer, the air bag layer does not apply pressure any more during air exhaust, and the packaging group can be taken out; and the heat transfer mechanism is driven to conduct hot air into the packaging group through the through hole, the hot air melts the packaging colloid, and the photovoltaic module is taken out. The beneficial effects of the utility model are that the solar cell packaging assembly is convenient to disassemble and install, and the anti-ultraviolet capability of the packaging assembly is improved.

Description

Technical Field

[0001] This utility model relates to the field of solar cell module technology, and in particular to a solar cell encapsulation glass structure that is easy to disassemble. Background Technology

[0002] With the increasing severity of global ecological and energy shortages, solar photovoltaic power generation has received widespread attention from various countries. Although some high-efficiency silicon cell technologies have been proposed, the manufacturing process of these high-efficiency solar cells is complex, the quality is difficult to control during mass production, and the equipment requirements are high. In recent years, new cell technologies have attracted widespread attention from researchers, and their cell conversion efficiency has increased from 3.8% to the current 20.1% in just a few years. The current and voltage output values ​​of a single solar cell are relatively small and cannot meet the output power requirements of practical applications. Therefore, solar cells must be connected in series and parallel, encapsulated for protection, and electrode wires must be led out to manufacture photovoltaic power generation modules with different output power from a few watts to hundreds of watts. Generally, the structure of a solar cell encapsulation module includes a back substrate, solar cells, interconnecting circuits, encapsulating adhesive, front glass panel, frame, etc. The module encapsulation technology is directly related to its power output, service life, reliability, and cost.

[0003] Despite continuous improvements in solar cell efficiency, compared to traditional crystalline silicon or thin-film solar cells, they are more susceptible to environmental factors such as moisture, oxygen, dust, corrosive chemicals, and external impacts, leading to damage, performance degradation, or even failure. They cannot operate stably in the natural environment for extended periods and require regular replacement and maintenance. Therefore, the long-term stable operation of solar cells necessitates appropriate module packaging technology that facilitates disassembly and periodic removal, maintenance, and replacement. This places higher technical demands on module packaging technology.

[0004] Therefore, based on customer feedback regarding the shortcomings of the existing structure, the inventors made further improvements to overcome the aforementioned problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a solar cell encapsulation glass structure that facilitates the disassembly and installation of solar cell encapsulation components and improves the UV resistance of the encapsulation components.

[0006] The purpose of this utility model is achieved through the following technical solution: a solar cell encapsulation glass structure that is easy to disassemble, wherein multiple solar cells are connected in series and parallel through circuits to form a photovoltaic module; characterized in that: it includes a substrate, an encapsulating colloid, a glass plate, and a heat transfer mechanism;

[0007] The photovoltaic module is mounted on a substrate, and a glass plate is mounted on top of the photovoltaic module to form an encapsulation assembly. The glass plate and the photovoltaic module are separated by a certain distance, and the distance is filled with encapsulating colloid.

[0008] The substrate has frames installed on the left and right sides. The left and right frames clamp and fix the packaging group. The heat transfer mechanism is installed under the substrate and is movably connected to the left and right frames. The substrate has multiple through holes. The heat transfer mechanism guides hot air into the packaging group through the through holes of the substrate.

[0009] During operation, the encapsulating colloid fills the space between the photovoltaic module and the glass plate, driving the heat transfer mechanism to conduct hot air into the interior through the through holes. The hot air melts the encapsulating colloid, allowing the photovoltaic module to be directly removed.

[0010] As a preferred technical solution of this application, the encapsulating colloid is a colorless and transparent epoxy encapsulating colloid, silicone encapsulating colloid, polyurethane encapsulating colloid, or ultraviolet light curable encapsulating colloid.

[0011] As a preferred technical solution of this application, the multiple through holes opened in the substrate avoid multiple solar cells in the photovoltaic module, and the heat transfer mechanism conducts hot air into the packaging group without interfering with the solar cells and their circuits.

[0012] As a preferred technical solution of this application, the left and right sides of the heat transfer mechanism are connected to the left and right frames by pins, which facilitates the installation and disassembly of the heat transfer mechanism.

[0013] As a preferred technical solution of this application, the plurality of solar cells are laid flat on the upper surface of the substrate at equal intervals.

[0014] As a preferred technical solution of this application, it also includes a mounting base plate; the mounting base plate is adapted to be installed under the substrate, and a plurality of insertion posts are provided on the upper surface of the mounting base plate, the plurality of insertion posts being adapted to the through holes of the substrate.

[0015] As a preferred technical solution of this application, it also includes an airbag layer; the airbag layer is disposed on the lower inner side of the left frame and the right frame, the upper and lower surfaces of the airbag layer are in contact with the substrate and the inner bottom surface of the frame respectively, and the airbag layer is connected to the air source; inflation makes the airbag layer apply pressure to the substrate to make the package assembly more secure, and the airbag layer no longer applies pressure when the air is depressurized, making it easier to remove the component.

[0016] As a preferred technical solution of this application, a steel strip layer is provided at the contact point between the airbag layer and the substrate, and the steel strip layer abuts against the lower surface of the substrate.

[0017] As a preferred technical solution of this application, the lower surface of the airbag layer is provided with a plurality of short pillars, which are in contact with the inner bottom surface of the frame to facilitate the positioning of the airbag layer.

[0018] This utility model has the following advantages:

[0019] (1) Facilitates the disassembly and installation of solar cell encapsulation components;

[0020] The solar cell encapsulation glass structure in this design incorporates an airbag layer and a heat transfer mechanism. The airbag layer expands and presses against the encapsulation assembly to clamp and fix the encapsulation glass structure. The heat transfer mechanism uses hot air to melt the encapsulation adhesive, facilitating the removal of the solar cells. Through this special encapsulation method and structural design, efficient encapsulation and easy disassembly of the solar cell module are achieved. At the same time, the through-holes for the hot air in the substrate avoid multiple solar cells in the photovoltaic module, ensuring that the hot air entering the encapsulation assembly does not interfere with the solar cells and their circuitry, thus guaranteeing the module's operational safety and functionality.

[0021] (2) Improve the UV attenuation resistance of the encapsulated components;

[0022] The UV-resistant module designed in this scheme is bonded to the glass panel and consists of three layers: an alternating layer of silicon oxide and a layer of silicon nitride, forming a three-layer superimposed structure. This structure acts as a UV-blocking optical film to resist UV attenuation. It effectively enhances the glass's ability to reflect and absorb ultraviolet rays, thereby improving both UV resistance and overall mechanical properties, and extending the lifespan of the photovoltaic module. Attached Figure Description

[0023] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0024] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;

[0025] Figure 3 This is a structural schematic diagram of the present invention from a half-section view perspective;

[0026] Figure 4 This is a structural schematic diagram of the present invention from a second perspective after the heat transfer mechanism is installed.

[0027] Figure 5 This is a schematic diagram of the heat transfer mechanism of this utility model;

[0028] Figure 6 This is a schematic diagram of the structure of part A of this utility model;

[0029] Figure 7 This is a first-view structural schematic diagram of the airbag layer of this utility model;

[0030] Figure 8 This is a schematic diagram of the airbag layer of this utility model from a second perspective.

[0031] Figure 9 This is a schematic diagram of the mounting base plate of this utility model;

[0032] Figure 10 This is a schematic diagram of the structure of the adhesive strip of this utility model;

[0033] In the diagram: 1-Airbag layer, 2-Left frame, 3-Right frame, 4-Heat transfer mechanism, 5-Substrate, 6-Solar cell, 7-Encapsulating colloid, 8-Glass plate, 9-Glue strip, 10-Through hole, 11-Hot air blower, 12-Gas delivery pipe, 13-Steel strip layer, 14-Short column, 15-Mounting base plate, 16-Magnetic strip, 17-Insertion column. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0035] It should be noted that the orientation or positional relationship indicated by terms such as "left" and "right" is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this invention is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. Such terms are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0037] Therefore, based on the above issues, please refer to Figure 1 This utility model proposes a solar cell encapsulation glass structure that is easy to disassemble in order to solve the problem.

[0038] (Example)

[0039] It should be noted that since the current and voltage output values ​​of a single solar cell 6 are relatively small, they often cannot meet the practical requirements for the output power of the solar cell 6. Therefore, multiple solar cells 6 need to be connected in series and parallel and encapsulated. Then, electrical wires are led out to create a practical photovoltaic module that can output hundreds of watts. Existing solar encapsulation modules generally include a substrate 5 for mounting the solar cells 6, the solar cells 6 and their wiring, encapsulating colloid 7, a glass plate 8, and a frame.

[0040] See Figures 1-10 The present embodiment proposes a solar cell encapsulation glass structure that is easy to disassemble, including a photovoltaic module, a substrate 5, an encapsulating colloid 7, and a heat transfer mechanism 4.

[0041] Among them, see Figure 2The photovoltaic module is fixedly installed on the upper surface of the substrate 5, and a glass plate 8 is placed on the upper side of the photovoltaic module. There is a certain gap between the glass plate 8 and the photovoltaic module. The encapsulating colloid 7 fills the gap so that the encapsulating colloid 7 wraps the photovoltaic module. The glass plate 8, photovoltaic module and substrate 5 are arranged and assembled in sequence to form an encapsulation group (as a solar cell encapsulation component).

[0042] Among them, see Figure 4 and Figure 5 The heat transfer mechanism 4 is located on the lower side of the substrate 5. The substrate 5 has multiple through holes 10. The upper panel of the heat transfer mechanism 4 is connected to the through holes 10. The heat transfer mechanism 4 can be driven to deliver hot air into the packaging assembly through the through holes 10 to melt the packaging colloid 7.

[0043] In actual use, after the heat transfer mechanism 4 drives the hot air to conduct hot air into the encapsulation group, the hot air can melt the encapsulation colloid 7 to remove the photovoltaic module.

[0044] The existing solar cell 6 in the solar cell encapsulation assembly often cannot work stably for a long time due to environmental factors. However, the existing encapsulation structure is relatively simple and not easy to disassemble and install. Therefore, it is not convenient to remove the solar cell 6 for inspection, repair or replacement. Therefore, based on the above problems, this solution designs a structure that facilitates the disassembly and installation of the solar cell 6 encapsulation assembly. The disassembly and installation of the encapsulation structure is realized through the heat transfer mechanism 4. The heat transfer mechanism 4 transfers hot air into the encapsulation assembly to melt the encapsulation colloid 7, making it easy to remove the photovoltaic module.

[0045] In this embodiment, see Figures 1-2 and Figure 6 For photovoltaic modules, the photovoltaic modules are encapsulated between glass plates 8 and substrates 5 by encapsulating colloid 7, that is, a certain gap is formed between glass plates 8 and substrates 5, and encapsulating colloid 7 is injected into the gap. The encapsulating colloid 7 is a colorless and transparent epoxy encapsulating colloid, silicone encapsulating colloid, polyurethane encapsulating colloid, or ultraviolet curable encapsulating colloid. Furthermore, multiple fixing frames are equally spaced on the upper surface of substrates 5, and a solar cell 6 is installed in each fixing frame to facilitate the orderly fixing of solar cells 6. Multiple solar cells 6 can be laid flat on the upper surface of substrates 5 at equal intervals.

[0046] Furthermore, since short-wavelength light in nature can cause degradation of solar cells, existing technologies have been developed for both the encapsulation glass and the cells to reduce the impact of short-wavelength ultraviolet light. Preparing ultraviolet-blocking optical thin films is a very effective technique, but the materials currently used are expensive for solar cell production. Therefore, this design also includes an anti-UV component, which is mounted on the upper surface of the glass plate 8 and is tightly bonded to it. The anti-UV component consists of a three-layer stacked structure formed by alternating silicon oxide and silicon nitride layers. The three-layer anti-UV film is formed by alternating silicon nitride (SiN) and silicon oxide (SiO) layers. The silicon nitride (SiN) layer has a reflectivity of 10% for ultraviolet light transmission, while the silicon oxide (SiO) layer is almost totally reflective of ultraviolet light. Therefore, this structure effectively enhances the glass's ability to reflect and absorb ultraviolet light, improving both its anti-UV performance and overall mechanical properties.

[0047] It should be noted that the encapsulating colloid 7 can also be other encapsulating colloids with high light transmittance and good weather resistance and aging resistance; and the substrate 5 is made of insulating material, such as ceramic or glass, to ensure the electrical safety and stability of the component.

[0048] In this embodiment, see Figure 4 and Figure 5 For the heat transfer mechanism 4, the substrate 5 has multiple through holes 10, and the positions of the through holes 10 avoid the multiple solar cells 6 and their connecting circuits in the photovoltaic module. This prevents the hot air entering the encapsulation group from directly blowing onto the solar cells 6 or the circuits connecting multiple solar cells 6, which could damage the solar cells 6 and their connecting circuits. This ensures that when the heat transfer mechanism 4 conducts hot air into the encapsulation group, the hot air does not interfere with the solar cells 6 and their circuits, thus guaranteeing the operational safety and functionality of the module. The heat transfer mechanism 4 includes a heat conduction cavity and a hot air blower 11. The heat conduction cavity is hollow inside, and the lower surface of the heat conduction cavity has multiple small holes. The small holes of the heat conduction cavity are connected to the through holes 10 of the substrate 5. The hot air output by the hot air blower 11 enters the encapsulation group through the small holes of the heat conduction cavity. Insert plates extend from the left and right sides of the heat conduction cavity, and grooves are provided at the corresponding left and right frame positions 3. The insert plates are inserted into the grooves, thereby connecting the heat transfer mechanism 4 to the frame, making it easy to disassemble the heat transfer mechanism 4.

[0049] It should be noted that the heat transfer mechanism 4 and the solar cell glass encapsulation structure in this solution are detachable. When the solar cell does not need to be removed, the heat transfer mechanism 4 does not need to be installed under the substrate 5. In order to prevent impurities or moisture from entering the encapsulation assembly through the through holes 10 of the substrate 5, a mounting base plate 15 is provided to be attached to the substrate 5. The mounting base plate 15 is a rectangular plate with multiple insertion posts 17 protruding vertically on its upper surface. The multiple insertion posts 17 are adapted to the multiple through holes 10 of the substrate 5. Furthermore, a magnetic strip 16 is provided on the upper surface of the mounting base plate 15, and a corresponding magnetic strip 16 is also provided on the lower surface of the substrate 5, so that the mounting base plate 15 can be fitted to the lower surface of the substrate 5 and the insertion posts 17 can be inserted into the through holes 10.

[0050] In this embodiment, see Figures 6-8 For the airbag layer 1, a left frame 2 and a right frame 3 are installed on the left and right sides of the packaging assembly, respectively. The packaging assembly is clamped and fixed by the setting of the left and right frames. The left and right frames are both U-shaped groove structures. The packaging assembly is inserted into the groove. The lower inner bottom surface of the left and right frames is provided with airbag layers. A total of two airbag layers are provided, located at the left and right bottom edges of the substrate. The airbag layer 1 is connected to a driving air source. Two airbag layers 1 (airbag layer A and airbag layer B) are provided on the left and right sides of the lower surface of the substrate 5. The upper surfaces of airbag layer A and airbag layer B abut against the lower surface of the substrate 5, and their lower surfaces are in contact with the inner bottom surface of the frame. The airbag layer 1 has a vent hole, which is connected to the air supply pipe 12. The air supply pipe 12 passes through the upper and lower surfaces of the frame and the port of the air supply pipe 12 extends out and is connected to the air source.

[0051] Furthermore, the airbag layer 1 includes a steel strip layer 13 and short pillars 14; the airbag layer 1 is hollow inside, and the contact surface between the airbag layer 1 and the inner bottom surface of the frame is provided with a vent and multiple short pillars 14. The short pillars 14 contact the inner bottom surface of the frame, so that the airbag layer 1 is accurately positioned with the frame. The lower part of the frame has a mounting hole, which is opposite to the vent of the airbag layer 1. An air supply pipe 12 is inserted into the mounting hole, the bottom end of the air supply pipe 12 is connected to the vent, and the top end of the air supply pipe 12 extends out of the frame and is connected to the air source; the contact between the airbag layer 1 and the lower surface of the substrate 5 is... A steel strip layer 13 is provided on the surface, which is fixedly connected to the airbag layer 1. The steel strip layer 13 is a rigid structure and the lower surface of the steel strip layer 13 is provided with multiple equally spaced ribs. The bottom surface of the steel strip layer 13 is opposite to the substrate 5. When the airbag layer 1 is inflated and exerts force on the substrate 5, the substrate 5 is pressed tightly by the steel strip layer 13. At the same time, adhesive strips 9 are provided at the contact positions between the upper part of the left and right frames and the upper surface of the glass plate 8 to prevent the glass plate 8 from being damaged by pressure after the airbag layer 1 under the substrate 5 is inflated. The adhesive strips 9 can play a buffering role.

[0052] In actual operation, the driving air source inflates the airbag layer 1 through the air supply pipe 12. At this time, the airbag layer 1 inflates and applies pressure to the encapsulation assembly it supports, so that the encapsulation assembly can be firmly installed. At the same time, when the air is pumped out and the airbag layer 1 returns to its original state and no longer applies pressure to the encapsulation assembly, the solar cell 6 encapsulation assembly can be easily disassembled. The driving hot air blower 11 outputs hot air and conducts it into the encapsulation assembly through the heat conduction cavity. The hot air can melt the encapsulation colloid 7 inside the encapsulation assembly, which is convenient for disassembling the solar cell 6. When sunlight shines, the anti-UV film layer set on the upper side of the glass plate 8 acts as an ultraviolet cutoff optical film to resist UV decay and increase the service life of the solar cell 6.

[0053] Currently, due to adverse environmental factors, solar cells 6 in solar cell encapsulation modules often cannot operate stably, resulting in a short lifespan. Furthermore, existing encapsulation structures are relatively simple and inconvenient to disassemble, making it difficult to remove solar cells 6 for inspection, repair, or replacement. Short-wavelength light also causes attenuation of solar cells 6, but current devices use anti-attenuation optical thin-film materials, which are expensive. Therefore, this design presents a solar cell encapsulation glass structure with UV resistance. The solar cell encapsulation structure is disassembled and assembled using an air bladder layer 1 and a heat transfer mechanism 4. Inflating and deflating the air bladder layer 1 effectively removes the encapsulation assembly held by the frame and air bladder. The heat transfer mechanism 4 transfers hot air into the encapsulation assembly to melt the encapsulation colloid 7, facilitating the removal of the photovoltaic module or solar cell 6. A UV-blocking optical thin film composed of a three-layer superimposed structure of silicon oxide and silicon nitride layers resists UV attenuation. The heat transfer mechanism 4 is connected to the frame via a pin structure, facilitating its disassembly. The overall device facilitates the disassembly and installation of the solar cell 6 encapsulation module and improves the UV resistance of the encapsulation module.

[0054] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A solar cell encapsulation glass structure which is easy to disassemble, a plurality of solar cells (6) being connected in series and parallel by lines to form a photovoltaic module; characterized by: It comprises a substrate (5), an encapsulating glue (7), a glass plate (8) and a heat transfer mechanism (4); The photovoltaic module is installed on the substrate (5), and the glass plate (8) is installed above the photovoltaic module to form an encapsulating group, the glass plate (8) is spaced apart from the photovoltaic module, and the space is filled with the encapsulating glue (7). The left frame (2) and the right frame (3) clamp and fix the encapsulating group, the heat transfer mechanism (4) is installed below the substrate (5) and movably connected with the left and right frames, a plurality of through holes (10) are formed in the substrate (5), and the heat transfer mechanism (4) guides hot air into the encapsulating group through the through holes (10) of the substrate (5). During operation, the encapsulating glue (7) fills the space between the photovoltaic module and the glass plate (8), the heat transfer mechanism (4) is driven to conduct hot air into the encapsulating group through the through holes (10), and the hot air can directly take out the photovoltaic module after melting the encapsulating glue (7).

2. The easily detachable solar cell encapsulating glass structure according to claim 1, wherein: The encapsulating glue (7) is colorless and transparent, and is an epoxy encapsulating glue, a silicone encapsulating glue, a polyurethane encapsulating glue or an ultraviolet light curing encapsulating glue.

3. The easily detachable solar cell encapsulating glass structure according to claim 1, wherein: The through holes (10) of the substrate (5) avoid the plurality of solar cells (6) in the photovoltaic module, and the heat transfer mechanism (4) conducts hot air into the encapsulating group without interfering with the solar cells (6) and their circuits.

4. The easily detachable solar cell encapsulating glass structure according to claim 3, wherein: The left and right sides of the heat transfer mechanism (4) are inserted and clamped with the left and right frames (3), so that the heat transfer mechanism (4) is convenient to install and disassemble.

5. The easily detachable solar cell encapsulating glass structure according to claim 2, wherein: The plurality of solar cells (6) are arranged on the upper surface of the substrate (5) at equal intervals.

6. The easily detachable solar cell encapsulating glass structure according to claim 2, wherein: The installation bottom plate (15) is adaptively installed below the substrate (5), the upper surface of the installation bottom plate (15) is provided with a plurality of plug-in columns (17), and the plug-in columns (17) are adaptively matched with the through holes (10) of the substrate (5).

7. The easily detachable solar cell encapsulating glass structure according to claim 1, wherein: The air bag layer (1) is arranged on the inner side of the lower part of the left frame (2) and the right frame (3), the upper and lower surfaces of the air bag layer (1) are in contact with the substrate (5) and the inner bottom surface of the frame respectively, and the air bag layer (1) is connected with an air source; inflation of the air bag layer (1) exerts pressure on the substrate (5) to make the encapsulating group more tightly fixed, and when the air is exhausted, the air bag layer (1) no longer exerts pressure, so that the module is convenient to take out.

8. The solar cell encapsulant glass structure of claim 7, wherein: The steel strip layer (13) is arranged at the contact position of the air bag layer (1) and the substrate (5), and the steel strip layer (13) abuts against the lower surface of the substrate (5).

9. The solar cell encapsulant glass structure of claim 8, wherein: The lower surface of the air bag layer is provided with a plurality of short columns (14), the short columns (14) are in contact with the inner bottom surface of the frame, and the positioning of the air bag layer (1) is facilitated.

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