Double-glass photovoltaic module
By incorporating a first and second sealing element into the double-glass photovoltaic module structure, the problems of exposed encapsulant film and glass misalignment are solved, thereby improving sealing performance and stability, extending service life, and reducing costs.
Patent Information
- Application Number
- CN202422940096.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In existing photovoltaic modules, the encapsulant film is exposed at the edges during the lamination process, increasing the risk of moisture penetration and making the glass prone to shifting, which reduces sealing performance and product yield, and increases costs.
The double-glass photovoltaic module structure is adopted. By setting the first seal at both ends of the back or front glass, a gap is formed and the second seal is filled. This changes the position of the encapsulant film, reduces glass offset, and prevents water vapor penetration during frame installation.
It improves the sealing performance of photovoltaic modules, enhances the stability of solar cells, increases product yield, extends service life, and saves costs.
Smart Images
Figure CN223528417U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to photovoltaic technology field especially relates to a double glass photovoltaic module. BACKGROUND
[0002] With the continuous development of photovoltaic technology, the sealing requirement of photovoltaic module to water vapor is higher and higher, and good sealing performance can improve the reliability of photovoltaic module and prolong the service life.
[0003] In the existing process of photovoltaic module, the adhesive film after laminating is exposed from the four edges of the laminated part, so that after the subsequent installation of the frame, the frame is in direct contact with the exposed adhesive film, which increases the risk of water vapor penetration of the photovoltaic module and reduces the sealing performance. At the same time, in the process of laminating, the front glass and the back glass are prone to deviation, thereby reducing the product yield and increasing the cost.
[0004] Therefore, it is urgent to design a double glass photovoltaic module to solve the above technical problems. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a double glass photovoltaic module to improve its sealing performance and product yield, prolong the service life and save the cost.
[0006] To achieve this purpose, the utility model adopts the following technical scheme:
[0007] The utility model provides a double glass photovoltaic module, which comprises front glass, front adhesive film, cell piece, back adhesive film and back glass arranged in sequence to form a cell module.
[0008] The two ends of any one of the back glass and the front glass are provided with a first sealing element, the first sealing element extends towards the thickness direction of the cell module, and a gap is formed between the first sealing element and the side edge of the cell module, and the gap is filled with a second sealing element.
[0009] As an optional technical scheme of the double glass photovoltaic module, the end face of the first sealing element is flush with the end of the cell module.
[0010] As an optional technical scheme of the double glass photovoltaic module, the first sealing element is provided with a pattern on the side facing the cell piece.
[0011] As an optional technical scheme of the double glass photovoltaic module, the first sealing element is integrally formed with the back glass or the front glass.
[0012] As an optional technical scheme of the double glass photovoltaic module, part of the front adhesive film and part of the back adhesive film after laminating are filled in part of the gap.
[0013] As an optional technical scheme of the double-glass photovoltaic module, the second sealing member is butyl hot melt sealant or molten glass powder.
[0014] As an optional technical scheme of the double-glass photovoltaic module, the width of the gap is 1mm-3mm.
[0015] As an optional technical scheme of the double-glass photovoltaic module, the double-glass photovoltaic module further comprises a frame, and the frame is adhesively connected with the front glass and / or the back glass.
[0016] As an optional technical scheme of the double-glass photovoltaic module, the frame is provided with a relief groove, and the relief groove is arranged opposite to the gap and is configured to avoid the second sealing member.
[0017] As an optional technical scheme of the double-glass photovoltaic module, the cell is a crystalline silicon solar cell or a thin-film solar cell.
[0018] The double-glass photovoltaic module has at least the following beneficial effects:
[0019] The utility model discloses a double-glass photovoltaic module, which comprises a front glass, a front adhesive film, a cell, a back adhesive film and a back glass arranged in sequence to form a cell module; and a first sealing member and a second sealing member. The two ends of any one of the back glass and the front glass are provided with the first sealing member, the first sealing member extends towards the thickness direction of the cell module, and a gap is formed between the first sealing member and the side edge of the cell module, and the gap is filled with the second sealing member.
[0020] The first sealing member is arranged to extend towards the thickness direction of the cell module and form a gap with the side edge of the cell module, so that the overflowed part of the front adhesive film and the part of the back adhesive film (hereinafter referred to as adhesive film) after lamination can be filled in the gap, thereby changing the position of the exposed adhesive film, avoiding the problem of high water vapor permeability of the photovoltaic module caused by the exposure of the adhesive film around the lamination part and the installation of the frame, and improving the sealing performance of the double-glass photovoltaic module. Meanwhile, since the first sealing member is protruded on the back glass or the front glass, the first sealing member can limit the position of the front glass or the back glass, reduce the phenomenon of deviation of the front glass or the back glass during lamination, improve the stability of the cell, and thus improve the product yield of the double-glass photovoltaic module and save costs. Meanwhile, the second sealing member can further improve the sealing performance of the double-glass photovoltaic module, reduce the penetration of water vapor, and prolong the service life. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings described in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained based on the contents of the embodiments of the present application and the drawings without creative labor.
[0022] Fig. 1 is an exploded view of the double-glass photovoltaic module provided by the embodiments of the present application;
[0023] Fig. 2 is a top view of the double-glass photovoltaic module provided by the embodiments of the present application;
[0024] Fig. 3 is a partial structural schematic view of the double-glass photovoltaic module provided by the embodiments of the present application.
[0025] Reference signs
[0026] 100, front glass; 200, front adhesive film; 300, cell; 400, back adhesive film; 500, back glass; 510, first sealing member; 520, first accommodating chamber; 530, pattern; 600, first gap; 700, second sealing member; 800, frame; 810, avoiding groove. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0029] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0030] In the description of the utility model, it needs to explain, the term "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, or it is the orientation or position relation of the utility model product when using usually, only for the convenience of describing the utility model and simplifying the description, and cannot indicate or imply that the device or element must have a particular orientation, construct and operate, therefore cannot be understood as the limitation of the utility model. In addition, the term "first", "second", "third" and so on are only used for distinguishing description, and cannot be understood as indicating or implying relative importance. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two.
[0031] In the description of the utility model, it also needs to explain, unless otherwise specified and limited, the term "set", "connect" should be broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, or electrically connected. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0032] In the utility model, unless otherwise specified and limited, the "upper" or "lower" of the first feature in the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature in the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature in the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0033] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.
[0034] The embodiment provides a kind of double glass photovoltaic module, improves its sealing performance and product yield, prolongs service life, saves cost.
[0035] As Figs. 1-3As shown, the double-glass photovoltaic module mainly comprises a front glass 100, a front adhesive film 200, a cell piece 300, a back adhesive film 400 and a back glass 500 arranged in sequence to form a cell module, and a first sealing member 510 and a second sealing member 700. The two ends of any one of the back glass 500 and the front glass 100 are provided with the first sealing member 510, the first sealing member 510 extends towards the thickness direction of the cell module, and a gap is formed between the first sealing member 510 and the side edge of the cell module, and the gap is filled with the second sealing member 700.
[0036] Specifically, the cell piece 300 in the embodiment is located between the front adhesive film 200 and the back adhesive film 400, the front glass 100 is located above the front adhesive film 200, and the back glass 500 is located below the back adhesive film 400.
[0037] The first sealing member 510 is provided on one of the back glass 500 and the front glass 100, and a gap is formed between the first sealing member 510 and the circumferential edge of the other one of the front glass 100 and the back glass 500, and part of the front adhesive film 200 and part of the back adhesive film 400 after lamination are filled in the gap.
[0038] Based on the above design, by providing the first sealing member 510, and the first sealing member 510 extending towards the thickness direction of the cell module and forming a gap with the side edge of the cell module, the part of the front adhesive film 200 and the part of the back adhesive film 400 (hereinafter referred to as the adhesive film) overflowing after lamination can be filled in the gap, so as to change the position of the exposed adhesive film, that is, to avoid the problem of high water vapor permeability of the photovoltaic module caused by the exposure of the adhesive film around the laminated part and the installation of the frame 800, and to improve the sealing performance of the double-glass photovoltaic module. At the same time, since the first sealing member 510 is provided on the back glass 500 or the front glass 100, the first sealing member 510 can limit the position of the front glass 100 or the back glass 500, reduce the phenomenon of deviation of the front glass 100 or the back glass 500 during lamination, improve the stability of the cell piece 300, and thus improve the product yield of the double-glass photovoltaic module and save costs. At the same time, the second sealing member 700 can further improve the sealing performance of the double-glass photovoltaic module, reduce the penetration of water vapor, and prolong the service life.
[0039] Preferably, the first sealing member 510 in the embodiment is provided at the circumferential edge of any one of the back glass 500 and the front glass 100 to improve the sealing performance of the double-glass photovoltaic module.
[0040] Specifically, the first seal 510 in the embodiment protrudes from the periphery of the back glass 500 and surrounds the first accommodating chamber 520 with the back glass 500; the front glass 100, the front adhesive film 200, the battery piece 300 and the back adhesive film 400 are arranged in the first accommodating chamber 520, and the first gap 600 is arranged between the first seal 510 and the periphery of the front glass 100, and part of the front adhesive film 200 and part of the back adhesive film 400 after lamination fill part of the first gap 600.
[0041] Alternatively, the first seal 510 protrudes from the periphery of the front glass 100 and surrounds the second accommodating chamber (not shown in the figure); the front adhesive film 200, the battery piece 300, the back adhesive film 400 and the back glass 500 are arranged in the second accommodating chamber, and the second gap (not shown in the figure) is arranged between the first seal 510 and the periphery of the back glass 500, and part of the front adhesive film 200 and part of the back adhesive film 400 after lamination fill part of the second gap.
[0042] The setting of the first seal 510 enables the part of the front adhesive film 200 and the part of the back adhesive film 400 overflowing after lamination to fill in the first gap 600 or the second gap, thereby changing the position of the exposed adhesive film, i.e. avoiding the problem of high water vapor permeability of the photovoltaic module caused by the exposed adhesive film around the laminated component and the installation of the frame 800, improving the sealing performance of the double-glass photovoltaic module. At the same time, since the first seal 510 protrudes on the back glass 500, the first seal 510 can limit the front glass 100, reducing the phenomenon of deviation of the front glass 100 during lamination, improving the stability of the battery piece 300, thereby improving the product yield of the double-glass photovoltaic module and saving costs. Similarly, when the first seal 510 protrudes on the front glass 100, the first seal 510 can limit the back glass 500.
[0043] The end surface of the first seal 510 in the embodiment is flush with the end of the battery module. Specifically, the first seal 510 in the embodiment is arranged on the back glass 500, and the end surface of the first seal 510 is flush with the front glass 100; or, the first seal 510 is arranged on the front glass 100, and the end surface of the first seal 510 is flush with the back glass 500. This can facilitate the subsequent installation of the frame 800, improve the working efficiency of the installation of the frame 800, and save costs.
[0044] Optionally, the width of the first gap 600 and the width of the second gap in the embodiment are both set to 1-3 mm. When the width of the first gap 600 and the width of the second gap are both less than 1 mm, the overflowed adhesive film in the laminating process will overflow out of the first gap 600 or the second gap, thereby contaminating the front glass 100 or the back glass 500 and reducing the product yield. When the width of the first gap 600 and the width of the second gap are both greater than 3 mm, the size of the front glass 100 or the back glass 500 will undoubtedly be increased, and the material cost will also be increased. Therefore, the width of the first gap 600 and the width of the second gap are both set to 1-3 mm, for example, 1 mm, 2 mm, 3 mm, etc., so that the adhesive film overflow can be avoided and the material cost can be saved.
[0045] For example, the first seal 510 is arranged on the back glass 500, and the length and width of the front glass 100 are both reduced by 3-5 mm to ensure that the front glass 100 can be accommodated in the first accommodation chamber 520.
[0046] Optionally, the width of the first seal 510 can be set to 1-3 mm, and the height can be set to 5-8 mm.
[0047] Optionally, the first seal 510 in the embodiment is integrally formed with the back glass 500, or the first seal 510 is integrally formed with the front glass 100. Specifically, the back glass 500 is produced by a common calender forming method. The temperature of the glass ribbon produced by the calender set is about 850-900°C, and the glass ribbon is then sent to a customized U-shaped glass forming machine. After forming and cooling, the U-shaped glass is obtained, that is, the back glass 500 with the first seal 510.
[0048] As shown in Fig. 3 In the embodiment, the first gap 600 is filled with the second seal 700, and the arrangement of the second seal 700 can further improve the sealing performance of the double-glass photovoltaic module, reduce water vapor penetration, and prolong the service life. Of course, in other embodiments, when the first seal 510 is integrally formed with the front glass 100, the second seal 700 can be arranged in the second gap.
[0049] For example, the second seal 700 in the embodiment is butyl hot melt sealant or molten glass powder. When the second seal 700 is butyl hot melt sealant, the butyl hot melt sealant can be preheated to 100-160°C in the extruder cylinder by the operator, and the temperature controller is kept at a constant temperature. When the butyl hot melt sealant is uniformly continuous, the butyl hot melt sealant is applied in the first gap 600 or the second gap, and the height of the butyl hot melt sealant is flush with the front glass 100 or the back glass 500, and then it is cooled.
[0050] When the second sealing member 700 is the molten glass powder, after the laminating process, a laser device is installed, the temperature is set to 480-560 DEG C, and the molten glass powder is sintered with the front glass 100 or the back glass 500 by using a focused laser beam, so as to improve the sealing performance of the double-glass photovoltaic module.
[0051] Further, the first sealing member 510 in the embodiment is provided with a pattern 530 on the side facing the cell 300, the pattern 530 can increase the contact area of the first sealing member 510 with the second sealing member 700 and the overflowed adhesive film, so as to enhance the bonding capacity, improve the sealing performance of the double-glass photovoltaic module, and reduce the penetration of water vapor.
[0052] As shown in the figure, Fig. 3 In the embodiment, the double-glass photovoltaic module further comprises a frame 800, which is bonded to the front glass 100 and / or the back glass 500. The frame 800 can protect the front glass 100 and the back glass 500 to some extent, and improve the strength of the double-glass photovoltaic module.
[0053] Optionally, the frame 800 in the embodiment is made of aluminum alloy material, which can ensure the strength and reduce the weight.
[0054] Further, the frame 800 in the embodiment is provided with a relief groove 810, which is opposite to the first gap 600 or the second gap 700. The relief groove 810 is configured to avoid the second sealing member 700, so as to avoid the pollution of the second sealing member 700 to the frame 800, and also avoid the problem of stress concentration of the second sealing member 700 caused by the extrusion of the frame 800.
[0055] Optionally, the cell 300 in the embodiment can be a crystalline silicon solar cell or a thin-film solar cell, which can improve the flexible applicability of the double-glass photovoltaic module.
[0056] Obviously, the above only describes the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the protection scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.
[0057] It is noted that in the description of the specification, the description referring to the terms "some embodiments", "other embodiments", and the like, means that the particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the present application. The appearance of the above terms in various places in the specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.
Claims
1. A dual glass photovoltaic module, characterized by, The battery module comprises, in sequence, a front glass (100), a front adhesive film (200), a battery piece (300), a back adhesive film (400), and a back glass (500); Two end portions of any one of the back glass (500) and the front glass (100) are provided with a first sealing member (510), the first sealing member (510) extends towards a thickness direction of the battery module, and a gap is formed between the first sealing member (510) and a side edge of the battery module, the gap being filled with a second sealing member (700).
2. The dual-glass photovoltaic assembly of claim 1, wherein, An end surface of the first sealing member (510) is flush with an end portion of the battery module.
3. The dual-glass photovoltaic assembly of claim 1, wherein, The first sealing member (510) is provided with a pattern (530) on a side facing the battery piece (300).
4. The dual-glass photovoltaic assembly of claim 1, wherein, The first sealing member (510) is integrally formed with the back glass (500) or the front glass (100).
5. The dual-glass photovoltaic assembly of claim 1, wherein, Part of the front adhesive film (200) and part of the back adhesive film (400) are filled in part of the gap after lamination.
6. The dual-glass photovoltaic assembly of claim 1, wherein, The second sealing member (700) is a butyl hot melt sealant or molten glass powder.
7. The dual-glass photovoltaic assembly of claim 1, wherein, The width of the gap is 1mm-3mm.
8. The dual-glass photovoltaic assembly of claim 1, wherein, The double-glass photovoltaic module further comprises a frame (800), the frame (800) being adhesively connected to the front glass (100) and / or the back glass (500).
9. The dual-glass photovoltaic assembly of claim 8, wherein, An avoiding groove (810) is formed on the frame (800), the avoiding groove (810) being arranged opposite to the gap, and the avoiding groove (810) is configured to avoid the second sealing member (700).
10. The dual-glass photovoltaic assembly of any of claims 1-9, wherein, The battery piece (300) is a crystalline silicon solar cell or a thin-film solar cell.