Double-glass assembly of integrated photovoltaic panel and double-glass photovoltaic panel

Abstract

The invention discloses a double-glass assembly of an integrated photovoltaic panel and a double-glass photovoltaic panel, the double-glass assembly of the integrated photovoltaic panel comprises two pieces of photovoltaic glass, a sealing member and a packaging adhesive film, the two pieces of photovoltaic glass are arranged along the thickness direction of the photovoltaic glass, the two pieces of photovoltaic glass are both provided with first side surfaces opposite to each other, and the first side surfaces are provided with second side surfaces opposite to each other. At least one first side surface is provided with a first groove; the sealing piece is arranged between the two first side faces, and part of the sealing piece is arranged in the first groove in a matched mode. The packaging adhesive film is located between the two first side faces and located on the side, facing the center points of the first side faces, of the first groove. The double-glass assembly integrated with the photovoltaic panel has the advantage that the sealing reliability of the edge of the photovoltaic panel is high.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic cells, and in particular to a double-glass component of an integrated photovoltaic panel and a double-glass photovoltaic panel. Background Art

[0002] With the increasing demand for clean energy applications, the application environment of photovoltaic modules is constantly updated, and the requirements for the water vapor permeability of photovoltaic modules are more stringent. Therefore, the sealing performance of modules is continuously improved by reducing the water vapor permeability of the encapsulation film, improving the water vapor permeability of the encapsulation silicone at the edge of the module, and sealing the edge with sealing strips or glue. Among them, on the basis of improving the water vapor permeability of other materials such as encapsulation film and encapsulation silicone, the use of sealing strips or glue to seal the edge of the module during the lamination process can effectively improve the water vapor permeability of the module.

[0003] However, when using sealing strips or glue to seal the edges of photovoltaic modules, the sealing glue or strips will interpenetrate with the packaging film during the lamination process, which may cause the packaging film to penetrate through the sealing strips or sealing glue or even be squeezed out of the photovoltaic module, thereby reducing the sealing effect of the photovoltaic module. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention provides a double-glass component of an integrated photovoltaic panel, which has the advantage of high sealing reliability for the edge of the photovoltaic panel.

[0006] An embodiment of the present invention further provides a double-glass photovoltaic panel.

[0007] The double-glass component of the integrated photovoltaic panel in an embodiment of the present invention includes photovoltaic glass, a sealant and a packaging film, wherein the photovoltaic glass has two pieces and is arranged along the thickness direction of the photovoltaic glass, the two photovoltaic glasses have first side surfaces opposite to each other, and at least one of the first side surfaces is provided with a first groove; the sealant is arranged between the two first side surfaces, and part of the sealant is fitted in the first groove; the packaging film is located between the two first side surfaces, and the packaging film is located on the side of the first groove toward the center point of the first side surface.

[0008] According to the double-glass assembly of the integrated photovoltaic panel of the embodiment of the present invention, by setting a first groove on the first side of at least one photovoltaic glass, after the two photovoltaic glasses and the two packaging films are pressed on the two sides of the battery string respectively, the packaging film is located on the side of the first groove facing the center of the first side. At this time, after the seal is sandwiched between the two photovoltaic glasses and partially fitted in the first groove, the gap between the seal and the photovoltaic glass is effectively eliminated, so that in the subsequent lamination process, the packaging film and the seal are less likely to penetrate each other, the probability of the packaging film being exposed to the double-glass photovoltaic panel is lower, and the edge sealing reliability of the double-glass photovoltaic panel is higher.

[0009] In some embodiments, the first grooves extend along the circumference of the photovoltaic glass and are connected end to end;

[0010] Alternatively, there are a plurality of first grooves which are arranged at intervals along the circumference of the photovoltaic glass.

[0011] In some embodiments, the depth of the first groove is h, wherein 0.5 mm ≤ h ≤ 2 mm.

[0012] In some embodiments, the first groove is a V-shaped groove;

[0013] And / or, the maximum width of the first groove is d, wherein 3mm≤d≤5mm.

[0014] In some embodiments, the minimum distance between the first groove and the outer peripheral surface of the photovoltaic glass is L, wherein 3 mm ≤ L ≤ 5 mm.

[0015] In some embodiments, the side length of the photovoltaic glass is a, and the side length of the packaging film is b, wherein 6mm≤ab≤10mm.

[0016] In some embodiments, the seal comprises a sealing strip, and the sealing strip is provided with a first protrusion on opposite sides along the thickness direction of the photovoltaic glass, and the first protrusion fits in the first groove.

[0017] In some embodiments, a first groove is provided on one of the first side surfaces, and a second protrusion is provided on the other first side surface and is opposite to the first groove along the thickness direction of the photovoltaic glass;

[0018] The sealing strip is provided with a second groove on the side opposite to the first protrusion along the thickness direction of the photovoltaic glass, and the second protrusion is fitted in the second groove.

[0019] In some embodiments, the shape and size of the cross-sectional outer contour of the second groove are the same as the shape and size of the cross-sectional outer contour of the first groove.

[0020] The double-glass photovoltaic panel according to an embodiment of the present invention comprises a battery string and a double-glass assembly of an integrated photovoltaic panel as described in any of the above embodiments, wherein the battery string is encapsulated between the two encapsulation films.

[0021] The technical advantages of the double-glass photovoltaic panel according to the embodiment of the present invention are the same as the technical advantages of the double-glass component of the integrated photovoltaic panel in the above-mentioned embodiment, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is an exploded view of a double-glass photovoltaic panel according to an embodiment of the present invention.

[0023] Figure 2 Schematic diagram of photovoltaic glass in a double-glass assembly of an integrated photovoltaic panel according to an embodiment of the present invention.

[0024] Figure 3 4 is a cross-sectional view of a photovoltaic glass in a double-glass assembly of an integrated photovoltaic panel according to an embodiment of the present invention.

[0025] Reference numerals:

[0026] 1. Photovoltaic glass; 11. First groove; 2. Packaging film; 3. Battery string; 4. Sealing strip. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0028] Combine the following Figure 1-Figure 3 A double-glass assembly of an integrated photovoltaic panel according to an embodiment of the present invention is described.

[0029] The double-glass component of the integrated photovoltaic panel of the embodiment of the present invention includes a photovoltaic glass 1, a sealant and a packaging film 2. There are two photovoltaic glasses 1 arranged along the thickness direction of the photovoltaic glass 1, and the two photovoltaic glasses 1 have first side surfaces opposite to each other, and at least one first side surface is provided with a first groove 11. The sealant is arranged between the two first side surfaces, and part of the sealant is fitted in the first groove 11. The packaging film 2 is located between the two first side surfaces, and the packaging film 2 is located on the side of the first groove 11 facing the center point of the first side surface.

[0030] According to the double-glass assembly of the integrated photovoltaic panel of the embodiment of the present invention, by setting the first groove 11 on the first side of at least one photovoltaic glass 1, after the two photovoltaic glasses 1 and the two encapsulation films 2 are respectively pressed on the two sides of the battery string 3, the encapsulation film 2 is located on the side of the first groove 11 facing the center of the first side. At this time, after the seal is sandwiched between the two photovoltaic glasses 1 and partially fitted in the first groove 11, the gap between the seal and the photovoltaic glass 1 is effectively eliminated, so that in the subsequent lamination process, the encapsulation film 2 and the seal are less likely to penetrate each other, the probability of the encapsulation film 2 being exposed to the double-glass photovoltaic panel is lower, and the edge sealing reliability of the double-glass photovoltaic panel is higher.

[0031] In some embodiments, Figure 2 As shown, the first groove 11 extends along the circumference of the photovoltaic glass 1 and is connected end to end. Therefore, after the seal is fitted in the first groove 11, the encapsulation film 2 is better prevented from penetrating to the outside of the double-glass photovoltaic panel, and the edge sealing reliability of the double-glass photovoltaic panel is higher.

[0032] Alternatively, there are multiple first grooves 11 arranged at intervals along the circumference of the photovoltaic glass 1. This arrangement can also ensure the reliability of the edge sealing of the double-glass photovoltaic panel and effectively ensure the structural strength of the photovoltaic glass 1 at the first grooves 11.

[0033] In some embodiments, Figure 3 As shown, the depth of the first groove 11 is h, wherein 0.5 mm ≤ h ≤ 2 mm.

[0034] This arrangement, on the one hand, ensures the reliability of the first groove 11 in limiting the seal in the width direction of the first groove 11 after the seal is engaged with the first groove 11, and on the other hand, avoids the photovoltaic glass 1 being too thin in the first groove 11 and causing the strength to deteriorate.

[0035] Specifically, the depth h of the first groove 11 may be 0.5 mm, 1 mm, and 2 mm.

[0036] In some embodiments, Figure 3 As shown, the first groove 11 is a V-shaped groove. And / or, the maximum width of the first groove 11 is d, wherein 3 mm ≤ d ≤ 5 mm.

[0037] This arrangement ensures that the first groove 11 has a sufficiently large volume to ensure the reliability of the first groove 11 in limiting the sealing member in the width direction of the first groove 11 , and also ensures that the sealing member can more fully fill the first groove 11 .

[0038] Specifically, the maximum width d of the first groove 11 may be 3 mm, 4 mm, and 5 mm.

[0039] In some embodiments, Figure 3As shown, the minimum distance between the first groove 11 and the outer peripheral surface of the photovoltaic glass 1 is L, wherein 3mm≤L≤5mm.

[0040] This arrangement ensures that the seal is sandwiched between the two photovoltaic glasses 1 at the portion closest to the edge of the photovoltaic glass 1 , effectively preventing the seal from excessively encroaching on the space between the two photovoltaic glasses 1 and causing the volume of the internal battery string 3 to become smaller.

[0041] Specifically, the minimum distance L between the first groove 11 and the outer peripheral surface of the photovoltaic glass 1 can be 3 mm, 4 mm and 5 mm.

[0042] In some embodiments, the side length of the photovoltaic glass 1 is a, and the side length of the packaging film 2 is b, wherein 6mm≤ab≤10mm.

[0043] This configuration leaves a space between the two photovoltaic glasses 1 that is large enough for the sealant to be accommodated, so as to effectively ensure the sealing reliability of the sealant on the edge of the double-glass photovoltaic panel.

[0044] Specifically, the photovoltaic glass 1 and the packaging film 2 are both square plates. When the minimum distance L between the first groove 11 and the outer peripheral surface of the photovoltaic glass 1 is 3 mm, 4 mm and 5 mm, the difference between the side length of the photovoltaic glass 1 and the side length of the packaging film 2 is 6 mm, 8 mm and 10 mm respectively.

[0045] In some embodiments, the seal includes a sealing strip 4 , and the sealing strip 4 is provided with first protrusions on opposite sides along the thickness direction of the photovoltaic glass 1 , and the first protrusions are fitted in the first groove 11 .

[0046] The cooperation between the first protrusion and the first groove 11 further ensures that the sealing strip 4 and the photovoltaic glass 1 are relatively fixed in the width direction of the first groove 11. During the lamination process, the sealing strip 4 is less likely to penetrate toward the battery string 3, and the sealing reliability of the double-glass photovoltaic panel at the edge is higher.

[0047] Specifically, when the first groove 11 is an annular groove connected end to end, the first protrusion is preferably an annular convex strip extending along the circumference of the photovoltaic glass 1 and connected end to end.

[0048] In some embodiments, a first groove 11 is provided on one of the first side surfaces, a second protrusion opposite to the first groove 11 along the thickness direction of the photovoltaic glass 1 is provided on the other first side surface, and a second groove is provided on the side of the sealing strip 4 opposite to the first protrusion along the thickness direction of the photovoltaic glass 1, and the second protrusion fits in the second groove.

[0049] This arrangement can also ensure that the sealing strip 4 and the photovoltaic glass 1 are relatively fixed in the width direction of the second groove. During the lamination process, the sealing strip 4 and the packaging film 2 are less likely to penetrate each other, and the sealing reliability of the double-glass photovoltaic panel at the edge is higher.

[0050] Specifically, the shape and size of the cross-sectional outer contour of the second groove are the same as the shape and size of the cross-sectional outer contour of the first groove 11 .

[0051] Therefore, before assembling the double-glass photovoltaic panel, the two photovoltaic glasses 1 can be in contact through the cooperation and fit of the first groove 11 and the second protrusion, which facilitates the movement and transportation of the two photovoltaic glasses 1.

[0052] The double-glass photovoltaic panel according to the embodiment of the present invention comprises a battery string 3 and a double-glass assembly of an integrated photovoltaic panel as in any of the above embodiments, and the battery string 3 is encapsulated between two encapsulation films 2 .

[0053] The technical advantages of the double-glass photovoltaic panel according to the embodiment of the present invention are the same as the technical advantages of the double-glass component of the integrated photovoltaic panel in the above-mentioned embodiment, which will not be repeated here.

[0054] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0059] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A double-glass component of an integrated photovoltaic panel, characterized in that: include: Photovoltaic glass, wherein the photovoltaic glass has two parts and is arranged along the thickness direction of the photovoltaic glass, the two photovoltaic glasses have first side surfaces opposite to each other, and at least one of the first side surfaces is provided with a first groove; a sealing member, the sealing member being disposed between the two first side surfaces, and a portion of the sealing member being fitted in the first groove; The packaging film is located between the two first side surfaces, and the packaging film is located on a side of the first groove facing the center point of the first side surface.

2. The double-glass assembly of the integrated photovoltaic panel according to claim 1, characterized in that: The first grooves extend along the circumference of the photovoltaic glass and are connected end to end; Alternatively, there are a plurality of first grooves which are arranged at intervals along the circumference of the photovoltaic glass.

3. The double-glass assembly of the integrated photovoltaic panel according to claim 1, characterized in that: The depth of the first groove is h, wherein 0.5 mm≤h≤2 mm.

4. The double-glass assembly of the integrated photovoltaic panel according to claim 1, characterized in that: The first groove is a V-shaped groove; And / or, the maximum width of the first groove is d, wherein 3mm≤d≤5mm.

5. The double-glass assembly of the integrated photovoltaic panel according to claim 1, characterized in that: The minimum distance between the first groove and the outer peripheral surface of the photovoltaic glass is L, wherein 3mm≤L≤5mm.

6. The double-glass assembly of the integrated photovoltaic panel according to claim 1, characterized in that: The side length of the photovoltaic glass is a, and the side length of the packaging film is b, wherein 6mm≤ab≤10mm.

7. The double-glass assembly of the integrated photovoltaic panel according to claim 1, characterized in that: The sealing member comprises a sealing rubber strip, and the sealing rubber strip is provided with a first protrusion on the side opposite to the photovoltaic glass in the thickness direction, and the first protrusion is fitted in the first groove.

8. The double-glass assembly of the integrated photovoltaic panel according to claim 7, characterized in that: A first groove is provided on one of the first side surfaces, and a second protrusion is provided on the other first side surface and is opposite to the first groove along the thickness direction of the photovoltaic glass; The sealing strip is provided with a second groove on the side opposite to the first protrusion along the thickness direction of the photovoltaic glass, and the second protrusion is fitted in the second groove.

9. The double-glass assembly of the integrated photovoltaic panel according to claim 8, characterized in that: The shape and size of the cross-sectional outer contour of the second groove are the same as the shape and size of the cross-sectional outer contour of the first groove.

10. A double-glass photovoltaic panel, characterized in that: A double-glass component comprising a battery string and an integrated photovoltaic panel according to any one of claims 1 to 9, wherein the battery string is encapsulated between two of the encapsulation films.

Images