Sealing strip, sealing structure and sealing method for preventing overpressure of power generation glass

Abstract

The invention discloses an anti-overpressure sealing strip for power generation glass, a sealing structure and a sealing method, relates to the technical field of power generation glass preparation, and solves the problems of poor sealing effect, easy failure and high cost in the prior art. The sealing strip comprises a cuboid transverse sealing cavity, solid supporting blocks arranged on the two sides of the transverse sealing cavity, a longitudinal sealing cavity clamped in the middle of the transverse sealing cavity and having a certain height, a sheet-shaped sealing cavity and a plurality of channel cavities formed in the longitudinal sealing cavity. The transverse sealing cavity without the longitudinal sealing cavity, the outer side wall of the longitudinal sealing cavity and the outer side wall of the solid supporting block form a sunken sheet-shaped sealing cavity. The sealing structure comprises first glass, second glass and a sealing layer clamped between the first glass and the second glass, and the sealing layer comprises a plurality of sealing strips connected in sequence, a sealing frame formed by the sealing strips and sealing colloid filled in the sealing frame. The invention further provides a sealing method based on the sealing strip and the sealing structure. The cost is reduced, the efficiency is improved, and the yield and production efficiency are high.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation glass preparation, and specifically to a sealing strip, a sealing structure and a sealing method for overpressure prevention of power generation glass. Background Art

[0002] With the wide use of clean energy, photovoltaic power generation glass has been widely used. The reliability of power generation glass mainly depends on the edge sealing around it, and the effectiveness of edge sealing directly affects the service life of power generation glass. Therefore, a sealing method with excellent sealing performance and excellent overpressure prevention performance can greatly improve the reliable performance of power generation glass products.

[0003] In the necessary lamination process during the production of power generation glass, deformation of the glass edges and corners will occur, resulting in uneven edge sealing as the glass deforms. During long-term application, the deformation of the glass will recover, leading to the failure of edge sealing.

[0004] The prior art uses polyisobutylene butyl rubber with a low melt index to coat between power generation glasses, and places a metal structure frame with a corresponding thickness outside the power generation glass. After subsequent lamination processes, in a vacuum environment, through the processes of heating and pressurization, the power generation glass is bonded to the polyisobutylene butyl rubber to form a seal.

[0005] However, the prior art has obvious defects: polyisobutylene butyl rubber with a low melt index is still a fluid under process temperature and pressure. During the lamination process, it can only reduce the deformation of the glass under pressure, and there will still be a situation of overpressure in the lamination where the edge seal is thicker on the inner side and thinner on the outer side. During subsequent use, the polyisobutylene butyl rubber will be pulled by the deformed glass, resulting in the failure of edge sealing; the cost of polyisobutylene butyl rubber is high; the thickness of the metal structure frame needs to be correspondingly matched with the thickness and size of the power generation glass product, and multiple metal structure frames with different thicknesses and sizes are required. At the same time, a large amount of time and manpower are required for placement, resulting in an increase in operating costs and a decrease in production efficiency. Summary of the Invention

[0006] The purpose of the present invention is: to solve the problems of poor sealing effect and easy failure and high cost in the prior art, the present invention provides a sealing strip, a sealing structure and a sealing method for overpressure prevention of power generation glass, which do not require the assistance of a metal structure frame, improve production efficiency, and reduce the production and operation costs of power generation glass; at the same time, it prevents the occurrence of overpressure in the lamination process of power generation glass components, ensures the reliability of the product, and improves the service life of the product.

[0007] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0008] In a first aspect, the present invention provides an edge sealing strip for preventing overpressure of power-generating glass, the sealing strip comprising a rectangular transverse sealing cavity, solid support blocks arranged on both sides of the transverse sealing cavity, a longitudinal sealing cavity clamped in the middle of the transverse sealing cavity and having a certain height, a sheet-like sealing cavity and a plurality of groove cavities opened on the longitudinal sealing cavity; the transverse sealing cavity without the longitudinal sealing cavity forms a recessed sheet-like sealing cavity with the outer side wall of the longitudinal sealing cavity and the outer side wall of the solid support block.

[0009] Furthermore, the transverse sealing cavity is integrally formed, and includes a plurality of cylindrical hollow first tunnels arranged side by side, the diameter of the first tunnels is 0.25 to 0.35 mm, and the wall thickness of each adjacent first tunnel is 0.02 to 0.026 mm.

[0010] Furthermore, the longitudinal sealing cavity is perpendicular to the transverse sealing cavity, and each of the first tunnels is sandwiched between a plurality of longitudinal second tunnels at the upper and lower parts, the diameter of the second tunnel is 0.09 to 0.11 mm, and adjacent second tunnels arranged on the same first tunnel are spaced 0.045 to 0.055 mm apart.

[0011] Furthermore, the height of the sheet-shaped sealing cavity is 0.045-0.055 mm.

[0012] Furthermore, the groove cavity is opened on the longitudinal sealing cavity between adjacent first tunnels, the groove cavity depth is 0.045-0.055 mm, the groove cavity width is 0.08-0.1 mm, and the distance between each groove cavity is 1.8-2.2 mm.

[0013] In a second aspect, the present invention also provides a sealing structure for preventing overpressure of power-generating glass based on the above-mentioned edge sealing strip for preventing overpressure of power-generating glass. The sealing structure includes a first glass, a second glass and a sealing layer sandwiched between the first glass and the second glass. The sealing layer includes a plurality of sealing strips connected in sequence, a sealing frame formed by the sealing strips and a sealing colloid filled in the sealing frame.

[0014] Furthermore, tooth-shaped joints are provided on both sides of each sealing strip, and adjacent sealing strips are connected by the tooth-shaped joints.

[0015] In a third aspect, the present invention also provides a sealing method based on the above sealing structure, the method comprising the following steps:

[0016] S1. Provide the first glass, the second glass, the glue injection equipment, and several sealing strips;

[0017] S2, using glue injection equipment to inject glue into the transverse sealing cavity and the longitudinal sealing cavity of the sealing strip, and then inject glue into the sheet-shaped sealing cavity to obtain a sealing strip with a complete sealant;

[0018] S3. Process several strips of sealant-completed sealing strips, splice them in sequence to obtain a sealing frame, place the sealing frame on the first piece of glass, then fill the sealing frame with a film, and then place the second piece of glass on the upper part of the sealing frame to obtain a sealed structure;

[0019] S4. Perform lamination processing on the sealed structure, control the temperature, pressure and time to obtain a sealed structure body of multi-layer power generation glass, and complete the sealing.

[0020] Further, in the step S4, the temperature is 160-180 °C, the pressure is 0.09-1.2 MPa, and the time is 20-50 minutes.

[0021] Further, the step S4 further includes controlling the temperature, pressure and time for lamination processing, and controlling a part of the film in the sheet-shaped sealing cavity to flow into the channel cavity under the extrusion effect.

[0022] Compared with the prior art, the advantages of the present invention are as follows:

[0023] 1. An edge sealing strip for preventing overpressure of power generation glass according to the present invention, by setting a cuboid transverse sealing cavity as the main framework body, can provide support for the overall structure and preliminary sealing and protection functions; solid support blocks are arranged on both sides of the transverse sealing cavity as support areas for supporting the glass to prevent the edge of the glass from deforming; the upper and lower sides of the transverse sealing cavity are non-support areas, and after filling with sealing materials, the transverse sealing performance of the sealing strip can be effectively enhanced; a longitudinal sealing cavity is clamped between the upper and lower parts of a part of the area in the middle of the transverse sealing cavity, and after filling with sealing materials in the longitudinal sealing cavity, the longitudinal sealing performance of the sealing strip can be effectively enhanced; in addition, after filling with sealing materials in the recessed sheet-shaped sealing cavity area formed by the transverse sealing cavity without the longitudinal sealing cavity, the outer side walls of the longitudinal sealing cavity and the outer side walls of the solid support blocks, the bonding and sealing between the edge sealing strip and the front and rear glasses can be realized. The setting of the channel cavity enables a part of the sealing materials in the sheet-shaped sealing cavity to flow into the channel cavity under the extrusion effect, thereby making the sealing effect better.

[0024] The edge sealing strip structure of the present invention is relatively simple. First, solid support blocks for effectively supporting the glass are set as the basic support framework, and then a transverse sealing cavity, a longitudinal sealing cavity and a sheet-shaped sealing cavity are set to realize effective sealing in multiple directions in the transverse and longitudinal directions. At the same time, a channel cavity is set as a further supplement to the sealing effect, realizing effective support for the glass and sealing of the multi-layer glass structure from multiple directions, with good sealing effect, convenient application, large application space and low cost. It can be used in multiple scenarios, making up for the deficiency of the reliability of the existing sealing technology in harsh environments, and greatly improving the use effect of the product in harsh environments.

[0025] 2. A sealing structure for preventing overvoltage of power generation glass according to the present invention, a sealing frame formed by a plurality of sealing strips, and a sealing colloid filled between the sealing frame, the first glass and the second glass forms a stable sealing layer, with good bonding and sealing effects.

[0026] Specifically, first of all, this sealing structure does not require the assistance of a metal structural frame, improving production efficiency, reducing the production and operation costs of power generation glass, and being beneficial to improving the economic benefits of enterprises.

[0027] At the same time, the stable sealing layer can play a good supporting role for the glass during the lamination process, preventing the power generation glass components from overvoltage during the lamination process, ensuring the integrity and reliability of the product, and improving the yield rate of the product. And because the sealing layer will not fail due to overvoltage and the edge will not easily fail, it can effectively improve the service life of the product in the later stage and optimize the performance and quality of the product.

[0028] More importantly, this sealing structure can greatly reduce the usage amount of polyisobutylene butyl rubber, reduce costs, further reduce costs and increase efficiency, and improve the economic benefits of enterprises.

[0029] 3. A sealing method according to the present invention is easy to promote and implement, has a wide application range, can effectively improve the sealing performance and reliability of products, and improve the service life of products. It has extremely strong superiority. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The structural schematic diagram of an edge sealing strip for preventing overvoltage of power generation glass provided by an embodiment of the specification of the present invention Figure 1 .

[0031] Figure 2 The structural cross-sectional view of an edge sealing strip for preventing overvoltage of power generation glass provided by an embodiment of the specification of the present invention.

[0032] Figure 3 The enlarged view of part A in the structural cross-sectional view of an edge sealing strip for preventing overvoltage of power generation glass provided by an embodiment of the specification of the present invention.

[0033] Figure 4 The structural schematic diagram of an edge sealing strip for preventing overvoltage of power generation glass provided by an embodiment of the specification of the present invention.

[0034] Figure 5 The structural schematic diagram of an edge sealing strip for preventing overvoltage of power generation glass provided by an embodiment of the specification of the present invention Figure 2 .

[0035] Figure 6 The structural schematic diagram of the colloid filled in the edge sealing strip for preventing overvoltage of power generation glass provided by an embodiment of the specification of the present invention.

[0036] Reference Numerals in the Drawings:

[0037] 1 - Solid support block, 2 - Transverse sealing cavity, 3 - Longitudinal sealing cavity, 4 - Sheet sealing cavity, 5 - Groove cavity, 6 - First tunnel, 7 - Second tunnel, 8 - Second glass, 9 - First glass, 10 - Sealing colloid, 11 - Sealing frame.

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention.

[0039] Therefore, the following detailed description of the provided embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention. Detailed Embodiments

[0040] In a first aspect, the specification of the present invention provides an edge sealing strip for preventing overpressure of power generation glass. Please refer to Figure 1 and Figure 2 , Figure 3 . The sealing strip includes a cuboid transverse sealing cavity 2, solid support blocks 1 provided on both sides of the transverse sealing cavity 2, a longitudinal sealing cavity 3 with a certain height clamped in the middle of the transverse sealing cavity 2, a sheet sealing cavity 4, and several groove cavities 5 opened on the longitudinal sealing cavity 3; the transverse sealing cavity 2 without the longitudinal sealing cavity 3, the outer side wall of the longitudinal sealing cavity 3, and the outer side wall of the solid support block 1 form the recessed sheet sealing cavity 4.

[0041] It can be understood that by setting the cuboid transverse sealing cavity 2 as the main framework, it can provide support for the overall structure and preliminary sealing and protection functions; solid support blocks 1 are provided on both sides of the transverse sealing cavity 2 as support areas to support the glass and prevent the edge of the glass from deforming; the upper and lower sides of the transverse sealing cavity 2 are non - support areas, and after filling with sealing materials, the transverse sealing performance of the sealing strip can be effectively enhanced; a longitudinal sealing cavity 3 is clamped between the upper and lower parts of a partial area in the middle of the transverse sealing cavity 2, and after filling with sealing materials in the longitudinal sealing cavity 3, the longitudinal sealing performance of the sealing strip can be effectively enhanced; in addition, after filling with sealing materials in the area of the recessed sheet sealing cavity 4 formed by the transverse sealing cavity 2 without the longitudinal sealing cavity 3, the outer side wall of the longitudinal sealing cavity 3, and the outer side wall of the solid support block 1, the bonding and sealing between the edge sealing strip and the front and rear glasses can be achieved. The setting of the groove cavity 5 enables some of the sealing materials in the sheet sealing cavity 4 to flow into the groove cavity 5 under extrusion, thereby making the sealing effect better.

[0042] The structure of this edge sealing strip is relatively simple. First, a solid support block 1 for effectively supporting the glass is set as the basic support framework. Then, a transverse sealing cavity 2, a longitudinal sealing cavity 3, and a sheet-shaped sealing cavity 4 are set to achieve effective sealing in multiple transverse and longitudinal directions. At the same time, a groove cavity 5 is set as a further supplement to the sealing effect, achieving effective support for the glass and sealing of the multi-layer glass structure from multiple directions, with good sealing effect, convenient application, large application space, and low cost.

[0043] In some embodiments of the present invention, please continue to refer to Figure 1 and Figure 3 , the transverse sealing cavity 2 is integrally formed and includes several cylindrical hollow first tunnels 6 arranged side by side. The diameter of the first tunnel 6 is 0.25 - 0.35 mm, and the wall thickness of each adjacent first tunnel 6 is 0.02 - 0.026 mm.

[0044] In some embodiments of the present invention, please continue to refer to Figure 1 and Figure 3 , the longitudinal sealing cavity 3 is perpendicular to the transverse sealing cavity 2. Several longitudinal second tunnels 7 are clamped between the upper and lower parts of each first tunnel 6. The diameter of the second tunnel 7 is 0.09 - 0.11 mm, and the adjacent second tunnels 7 arranged on the same first tunnel 6 are spaced 0.045 - 0.055 mm apart.

[0045] In some embodiments of the present invention, please continue to refer to Figure 1 and Figure 2 , the height of the sheet-shaped sealing cavity 4 is 0.045 - 0.055 mm.

[0046] In some embodiments of the present invention, please continue to refer to Figure 1 and Figure 3 , the groove cavity 5 is opened on the longitudinal sealing cavity 3 between adjacent first tunnels 6. The depth of the groove cavity 5 is 0.045 - 0.055 mm, the width of the groove cavity 5 is 0.08 - 0.1 mm, and the distance between each groove cavity 5 is 1.8 - 2.2 mm.

[0047] Second, the present invention also provides a sealing structure for preventing overpressure of a power generation glass based on the above-mentioned edge sealing strip for preventing overpressure of a power generation glass. Please refer to Figure 4 , the sealing structure includes a first glass 9, a second glass 8, and a sealing layer clamped between the first glass 9 and the second glass 8. The sealing layer includes several sealing strips connected in sequence, a sealing frame 11 formed by the sealing strips, and a sealing colloid 10 filled in the sealing frame 11.

[0048] It is understandable that the sealing frame 11 formed by multiple sealing strips, and the sealing colloid filled between the first glass 9 and the second glass 9 within the sealing frame 11 forms a stable sealing layer, with good bonding and sealing effects. Specifically, first, this sealing structure does not require the assistance of a metal structural frame, improving production efficiency, reducing the production and operation costs of the power generation glass, and being beneficial to enhancing the economic benefits of the enterprise.

[0049] Meanwhile, the stable sealing layer can play a good supporting role for the glass during the lamination process, preventing overpressure in the power generation glass components during the lamination process, ensuring the integrity and reliability of the product, and improving the yield rate of the product. Moreover, since the sealing layer will not fail due to overpressure and the edges will not easily fail, it can effectively extend the service life of the product in the later stage, optimizing the performance and quality of the product.

[0050] More importantly, this sealing structure can significantly reduce the usage amount of polyisobutylene butyl rubber, reduce costs, further reduce costs and increase efficiency, and enhance the economic benefits of the enterprise.

[0051] The raw materials used in the present invention can be optimally combined according to different scenarios, so as to achieve the best effect suitable for the use environment and form a gain effect. The material of the solid support block 1 of the present invention can be selected but is not limited to HPEEK (high-performance polyether ether ketone) material. The material of the sealing colloid 10 of the present invention can be selected but is not limited to high water-blocking polyisobutylene rubber.

[0052] In some embodiments of the present invention, please refer to Figure 4 and Figure 5 , on both sides of each of the sealing strips are provided with toothed joints, and adjacent sealing strips are fitted and connected through the toothed joints, and multiple sealing strips are connected to obtain a sealing frame.

[0053] In some embodiments of the present invention, the sealing colloid 10 is made of high water-blocking polyisobutylene rubber.

[0054] Thirdly, the present invention also provides a sealing method based on the above sealing structure. Please continue to refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , and the method includes the following steps:

[0055] S1. Provide the first glass 9, the second glass 8, a glue injection device, and several sealing strips;

[0056] S2. Use the glue injection device to inject glue into the transverse sealing cavity 2 and the longitudinal sealing cavity 3 of the sealing strip, and then inject glue into the sheet-shaped sealing cavity 4 to obtain a sealing strip filled with complete sealant;

[0057] S3. Process several seal strips with finished sealant, splice them in sequence to obtain a sealing frame 11, place the sealing frame 11 on the first glass 9, then fill a glue film in the sealing frame 11 to obtain a sealing colloid 10, and then place the second glass 8 on the upper part of the sealing frame 11 to obtain a sealing structure;

[0058] S4. Perform lamination processing on the sealing structure, control the temperature, pressure and time to obtain a sealed structure body of multi-layer power generation glass, and complete the sealing.

[0059] It can be understood that this sealing method is easy to promote and implement, has a wide application range, can effectively improve the sealing performance and reliability of products, and extend the service life of products. It has extremely strong superiority.

[0060] In some embodiments of the present invention, in S4, the temperature is 160-180 °C, the pressure is 0.09-1.2 MPa, and the time is 20-50 minutes.

[0061] In some embodiments of the present invention, S4 further includes controlling the temperature, pressure and time for lamination processing, and controlling a part of the glue film in the sheet-shaped sealing cavity 4 to flow into the channel groove cavity 5 under the extrusion action.

[0062] In some embodiments of the present invention, the sealing colloid 10 is made of high water resistance polyisobutylene rubber, and the material injected into the seal strip by the injection equipment is also preferably high water resistance polyisobutylene rubber.

[0063] Embodiment 1

[0064] In this embodiment, an edge seal strip for preventing overpressure of power generation glass is provided. Please refer to Figure 1 and Figure 2 、 Figure 3 . The seal strip is made of HPEEK (high performance polyether ether ketone) material.

[0065] Please continue to refer to Figure 1 and Figure 2 、 Figure 3 . The seal strip includes a rectangular parallelepiped-shaped transverse sealing cavity 2, solid support blocks 1 provided on both sides of the transverse sealing cavity 2, a longitudinal sealing cavity 3 clamped in the middle of the transverse sealing cavity 2 and having a certain height, a sheet-shaped sealing cavity 4, and several channel groove cavities 5 opened on the longitudinal sealing cavity 3; the transverse sealing cavity 2 without the longitudinal sealing cavity 3 and the outer side walls of the longitudinal sealing cavity 3 and the outer side walls of the solid support blocks 1 form the recessed sheet-shaped sealing cavity 4.

[0066] The transverse sealing cavity 2 is integrally formed and includes several cylindrical hollow first tunnels 6 arranged side by side. The diameter of the first tunnel 6 is 0.3 mm, and the wall thickness of each adjacent first tunnel 6 is 0.025 mm.

[0067] The thickness of the solid support block 1 is 0.5 mm and the width is 2 mm.

[0068] The longitudinal sealing cavity 3 is perpendicular to the transverse sealing cavity 2. Several longitudinal second tunnels 7 are interposed between the upper and lower parts of each first tunnel 6. The diameter of the second tunnel 7 is 0.1 mm, and the adjacent second tunnels 7 provided on the same first tunnel 6 are spaced 0.045 mm apart.

[0069] The height of the sheet-shaped sealing cavity 4 is 0.05 mm and the width is 2.15 mm.

[0070] The channel groove cavity 5 is opened on the longitudinal sealing cavity 3 between adjacent first tunnels 6. The depth of the channel groove cavity 5 is 0.05 mm, the width of the channel groove cavity 5 is 0.01 mm, and the spacing between each channel groove cavity 5 is 2 mm.

[0071] Embodiment 2

[0072] In this embodiment, a sealing structure for preventing overvoltage of power generation glass based on Embodiment 1 is provided. Please refer to Figure 4 , the sealing structure includes a first glass 9, a second glass 8, and a sealing layer interposed between the first glass 9 and the second glass 8. The sealing layer includes several sealing strips connected in sequence, a sealing frame 11 formed by the sealing strips, and a sealing colloid 10 filled in the sealing frame 11.

[0073] Please refer to Figure 5 , tooth-shaped joints are provided on both sides of each sealing strip. Please refer to Figure 4 , adjacent sealing strips are fitted and connected through the tooth-shaped joints, and a plurality of sealing strips are connected to obtain the sealing frame 11.

[0074] Embodiment 3

[0075] In this embodiment, a sealing method based on Embodiment 2 is provided. Please continue to refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the method includes the following steps:

[0076] S1. Provide a first glass 9, a second glass 8, a glue injection device, and several sealing strips;

[0077] S2. Use the glue injection device to inject glue into the transverse sealing cavity 2 and the longitudinal sealing cavity 3 of the sealing strip: highly water-resistant polyisobutylene rubber, and then inject glue into the sheet-shaped sealing cavity 4 to obtain a completely sealed glue sealing strip;

[0078] S3. Process several strips of sealant - applied sealing strips and splice them in sequence to obtain the sealing frame 11 (obtain the sealing frame 11 as in Example 2). Place the sealing frame 11 on the first glass 9, then fill the sealing frame 11 with high - water - resistant polyisobutylene rubber, and then place the second glass 8 on the upper part of the sealing frame 11 to obtain a sealed structure;

[0079] S4. Perform lamination processing on the sealed structure, control the temperature, pressure and time, and control part of the adhesive film in the sheet - shaped sealing cavity 4 to flow into the channel groove cavity 5 under extrusion. Obtain the sealed structure body of the multi - layer power - generating glass and complete the sealing. In S4, the temperature is 160 - 180 degrees Celsius, the pressure is 0.09 - 1.2 MPa, and the time is 20 - 50 minutes.

[0080] For a specific description of the sealed structure, please refer to Figure 2 、 Figure 3 and Figure 6 . After injecting glue into the transverse sealing cavity 2 and the longitudinal sealing cavity 3 of the sealing strip using a glue - injecting device, the first tunnel 6 is filled with transverse sealant, the second tunnel 7 is filled with longitudinal sealant, and after injecting glue into the sheet - shaped sealing cavity 4, the sheet - shaped sealing cavity 4 is filled with sheet - shaped sealant.

[0081] Please continue to refer to Figure 2 、 Figure 3 and Figure 6 . Further perform lamination processing on the sealed structure, control the temperature, pressure and time, and control part of the adhesive film in the sheet - shaped sealing cavity 4 to flow into the channel groove cavity 5 under extrusion to form a surrounding sealant.

[0082] Please continue to refer to Figure 2 、 Figure 3 and Figure 6 . During the lamination process of the power - generating glass component, the transverse sealant and the longitudinal sealant will combine together to achieve good transverse and longitudinal sealing effects; the sheet - shaped sealant is slightly higher than the transverse sealant. During the process, it will be extruded by the glass and fill along the channel groove cavity 5 to ensure good bonding and sealing effects between the edge sealing strip and the first glass 9 and the second glass 8.

[0083] Test Example 4

[0084] In this embodiment, select the edge sealing strips, sealed structures and sealing methods of Examples 1 - 3 for actual use in a desert photovoltaic power station. The following is the specific usage record.

[0085] 4.1 Technical Solution

[0086] Increase the density of the channel cavity 5, reduce the spacing from 2 mm to 1.8 mm, and increase it to 1.5 times (spacing 1.8 mm). Replace the material of the sealing colloid 10 from high water-resistant polyisobutylene rubber to high-temperature-resistant polyisobutylene rubber (stable at 200 °C continuously).

[0087] At the same time, add anti-ultraviolet additives to the substrate of the solid support block 1 (no yellowing after 6000 hours of QUV test).

[0088] 4.2 Effects after implementation

[0089] In an environment with a 50 °C day-night temperature difference, the component breakage rate of the product is reduced from 17% to 1%; the dust penetration rate is reduced from 0.8 g / m 2 / year of the traditional solution to 0.03 g / m 2 / year; in a desert environment, the annual power attenuation of the product is reduced from 2% to 0.5%.

[0090] Test Example 5

[0091] In this embodiment, the edge sealing strip, sealing structure and sealing method of Embodiments 1-3 are selected for actual use in an offshore photovoltaic power station. The following is the specific usage record.

[0092] 5.1 Technical solution

[0093] Add a polytetrafluoroethylene coating to the surface of the substrate of the solid support block 1 (no corrosion after 5000 hours of salt spray test). In the colloid formula of the sealing colloid 10, incorporate hydrophobic nano-silica (contact angle > 150°).

[0094] 5.2 Effects after implementation

[0095] The water vapor penetration rate is stable at 0.005 g / m 2 / day, reaching the highest IEC level. The annual attenuation rate of the system is only 0.28%, which is 65% higher than the traditional solution.

[0096] In summary, a sealing strip, sealing structure and sealing method for preventing overvoltage of a power generation glass provided by the present invention can solve the problems of poor sealing effect, easy failure and high cost in the prior art. According to the specific implementation of Embodiments 1-3 and Test Examples 4-5, it can be proved that the technical solution of this case can effectively improve the sealing and bonding effect of the product, improve the reliability and yield of the product, extend the service life of the product, and at the same time the sealing method is simple and fast and convenient for popularization and implementation, with extremely strong superiority.

[0097] The above embodiments are only one implementation mode of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. An edge sealing strip for preventing overpressure of power generation glass, characterized in that: The sealing strip includes a rectangular transverse sealing cavity, solid support blocks arranged on both sides of the transverse sealing cavity, a longitudinal sealing cavity clamped in the middle of the transverse sealing cavity and having a certain height, a sheet-like sealing cavity and several groove cavities opened on the longitudinal sealing cavity; the transverse sealing cavity without the longitudinal sealing cavity forms a recessed sheet-like sealing cavity with the outer side wall of the longitudinal sealing cavity and the outer side wall of the solid support block.

2. The edge sealing strip for preventing overpressure of power generation glass according to claim 1, characterized in that: The transverse sealing cavity is integrally formed and includes a plurality of cylindrical hollow first tunnels arranged side by side. The diameter of the first tunnel is 0.25-0.35 mm, and the wall thickness of each adjacent first tunnel is 0.02-0.026 mm.

3. The edge sealing strip for preventing overpressure of power generation glass according to claim 2, characterized in that: The longitudinal sealing cavity is perpendicular to the transverse sealing cavity. Several longitudinal second tunnels are sandwiched between the upper and lower parts of each of the first tunnels. The diameter of the second tunnel is 0.09-0.11 mm. Adjacent second tunnels on the same first tunnel are spaced 0.045-0.055 mm apart.

4. The edge sealing strip for preventing overpressure of power generation glass according to claim 1, characterized in that: The height of the sheet-shaped sealing cavity is 0.045-0.055 mm.

5. The edge sealing strip for preventing overpressure of power generation glass according to claim 3, characterized in that: The groove cavity is opened on the longitudinal sealing cavity between adjacent first tunnels, the groove cavity depth is 0.045-0.055 mm, the groove cavity width is 0.08-0.1 mm, and the distance between each groove cavity is 1.8-2.2 mm.

6. A sealing structure for preventing overpressure of power generation glass based on the edge sealing strip for preventing overpressure of power generation glass according to claims 1 to 5, characterized in that: The sealing structure includes a first glass, a second glass and a sealing layer sandwiched between the first glass and the second glass. The sealing layer includes a plurality of sealing strips connected in sequence, a sealing frame formed by the sealing strips and a sealing colloid filled in the sealing frame.

7. The sealing structure for preventing overpressure of power generation glass according to claim 6, characterized in that: Each sealing strip is provided with tooth-shaped joints on both sides, and adjacent sealing strips are connected by being engaged with each other through the tooth-shaped joints.

8. A sealing method based on the sealing structure according to any one of claims 6 to 7, characterized in that: The method comprises the following steps: S1. Provide the first glass, the second glass, the glue injection equipment, and several sealing strips; S2, using glue injection equipment to inject glue into the transverse sealing cavity and the longitudinal sealing cavity of the sealing strip, and then inject glue into the sheet-shaped sealing cavity to obtain a sealing strip with a complete sealant; S3, processing several sealing strips with sealant, splicing them in sequence to obtain a sealing frame, placing the sealing frame on the first glass, filling the sealing frame with a glue film, and then placing the second glass on the upper part of the sealing frame to obtain a sealing structure; S4. Perform lamination processing on the sealing structure, control the temperature, pressure and time, obtain a sealed structure of multi-layer power generation glass, and complete the sealing.

9. A sealing method according to claim 8, characterized in that: In S4, the temperature is 160-180 degrees Celsius, the pressure is 0.09-1.2 MPa, and the time is 20-50 minutes.

10. A sealing method according to claim 8, characterized in that: The step S4 also includes controlling the temperature, pressure and time for lamination processing, and controlling a portion of the adhesive film in the sheet-shaped sealing cavity to flow into the channel cavity under the extrusion effect.

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