Special-shaped photovoltaic glass and photovoltaic module

Abstract

The utility model discloses special-shaped photovoltaic glass and a photovoltaic assembly, and belongs to the technical field of photovoltaic assemblies, the photovoltaic glass comprises a glass body and a sunny side used for being installed on a photovoltaic frame, the glass body comprises a plane portion, two sides of the plane portion are respectively connected with a curved surface portion, the curved surface portion bends and extends towards a backlight side, and the curved surface portion is connected with a light source. The end surface of the free end of the curved surface part is parallel to the plane part; and the outer side curved surface of the curved surface part is in smooth transition with the outer side surface of the photovoltaic frame. The photovoltaic module comprises a photovoltaic frame, a glass back plate, a battery piece and the special-shaped photovoltaic glass, the glass body and the glass back plate are arranged on the two sides of the battery piece respectively, the glass back plate and the battery piece are attached to the glass body, and the glass body is installed on the sunny side of the photovoltaic frame. The curved surface of the photovoltaic glass covers the edge of a photovoltaic frame, and accumulated water, dust and the like directly slide down from the outer side surface of the curved surface part and cannot enter a gap between the curved surface part and the frame.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic modules, and particularly to a special-shaped photovoltaic glass and a photovoltaic module. Background Art

[0002] Most of the front glass of existing photovoltaic modules is flat glass. In the use of conventional framed photovoltaic modules, in case of rain, snow, sand and dust weather, snow, ash and dust will accumulate at the edges, covering some areas of the cells and affecting the power generation efficiency. At present, there are also improvements to the front glass of photovoltaic modules. For example, the Chinese patent document with the publication number CN117914244A discloses a frame unit, a photovoltaic module frame and a curved screen photovoltaic module. The frame unit includes: a first connecting portion; a second connecting portion, which is perpendicularly arranged with respect to the first connecting portion. One end of the second connecting portion far away from the first connecting portion is connected with a limiting wall. The surface of the limiting wall adapted to cooperate with the laminate is a first arc surface, and the first arc surface is adapted to be tightly pressed and cooperate with the front surface of the laminate. The end of the limiting wall is not higher than the laminate.

[0003] The edge of the laminate in this patent document is a first arc surface, which can accelerate the sliding of snow, dust, etc. towards the edge of the laminate to a certain extent. However, there will be gaps when such a laminate with an arc-shaped edge is combined with the frame assembly. The existence of the gaps will allow snow, dust, rainwater, etc. to enter between the frame assembly and the laminate, which is not conducive to subsequent cleaning. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a special-shaped photovoltaic glass and a photovoltaic module, so as to solve the problem that there will be gaps when a laminate with an arc-shaped edge is combined with a frame assembly in the prior art. The existence of the gaps will allow snow, dust, rainwater, etc. to enter between the frame assembly and the laminate, which is not conducive to subsequent cleaning.

[0005] To achieve the above purpose, the utility model provides a special-shaped photovoltaic glass, which includes a glass body for being installed on the sunny side of a photovoltaic frame. The glass body includes a flat portion, and curved portions are connected to both sides of the flat portion. The curved portions extend in a curved manner towards the backlight side, and the end surface of the free end of the curved portion is parallel to the flat portion; the outer curved surface of the curved portion is smoothly transitioned with the outer side surface of the photovoltaic frame.

[0006] Furthermore, a shielding layer is arranged on the inner side surface of the curved portion, and the shielding layer is used for shielding the overflow of glue.

[0007] Furthermore, the shielding layer is a screen printing coating.

[0008] Furthermore, the shielding layer is completely adhered to the inner side surface of the curved portion.

[0009] The present utility model further provides a photovoltaic module, which includes a photovoltaic frame, a glass backplane, solar cells, and the above-mentioned special-shaped photovoltaic glass. The glass body and the glass backplane are respectively arranged on both sides of the solar cells. The glass backplane and the solar cells are both attached to the glass body, and the glass body is installed on the sunny side of the photovoltaic frame.

[0010] Furthermore, the sizes of the solar cells and the glass backplane are both not larger than the size of the flat portion.

[0011] Furthermore, a first adhesive film is arranged between the glass body and the solar cells, and a second adhesive film is arranged between the solar cells and the glass backplane.

[0012] Furthermore, a plurality of lead holes are formed in the glass backplane, and a bus bar lead is connected to the solar cells, and the bus bar lead passes through the lead holes.

[0013] Furthermore, a recessed retreat portion is arranged on the sunny side of the photovoltaic frame, and the curved surface of the glass body covers the retreat portion.

[0014] Furthermore, a gap groove is arranged in the retreat portion, and an adhesive is arranged in the gap groove, and the adhesive bonds the glass body and the photovoltaic frame.

[0015] Adopting the technical solution provided by the present utility model, compared with the existing well-known technologies, the following beneficial effects are achieved:

[0016] For the special-shaped photovoltaic glass of the present utility model, the flat portion plays a role in absorbing light energy. The curved surface portion bends and extends towards the backlight side, and the end surface of the free end of the curved surface portion is parallel to the flat portion, so that the arc range of the curved surface portion is large enough to produce an enclosing effect and can sufficiently cover the photovoltaic frame. The outer side surface of the curved surface portion is smoothly transitioned with the outer side surface of the photovoltaic frame, so that the edge of the curved surface portion covers the edge of the photovoltaic frame, and water accumulation, dust, etc. directly slide down from the outer side surface of the curved surface portion and will not enter the gap between the curved surface portion and the frame, which is convenient for cleaning and drainage. Moreover, dust, snow, etc. slide down in time and will not block the light-receiving surface of the photovoltaic glass. Compared with conventional modules, the light-receiving area is increased and the photoelectric conversion efficiency is improved.

[0017] Obviously, the elements or features described in the above single embodiments can be used alone or in combination in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the drawings, the dimensions and ratios do not represent the dimensions and ratios of the actual products. The drawings are only illustrative, and some non-essential elements or features are omitted for clarity.

[0019] Figure 1 is an exploded view of the structure of the photovoltaic module in the embodiment of the present utility model;

[0020] Figure 2 It is a schematic diagram of the installation structure between the glass body and the photovoltaic frame in the embodiment of the present utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the special-shaped photovoltaic glass in the embodiment of the present utility model;

[0022] Figure 4 In the embodiment of the present utility model Figure 3 front view of the special-shaped photovoltaic glass;

[0023] Figure 5 In the embodiment of the present utility model Figure 3 top view of the special-shaped photovoltaic glass.

[0024] Explanation of reference numerals

[0025] 100, glass body; 110, flat part; 120, curved part; 130, shielding layer; 200, first adhesive film; 300, battery cell; 310, bus bar lead; 400, second adhesive film; 500, glass back plate; 600, photovoltaic frame; 610, recessed part; 611, gap groove. Detailed implementation manners

[0026] Next, the present utility model will be described in detail with reference to the accompanying drawings. What is described here is only the preferred implementation manner of the present utility model, and those skilled in the art can think of other ways to implement the present utility model based on the preferred implementation manner, and other ways also fall within the scope of the present utility model.

[0027] Embodiment

[0028] Please refer to Figures 1 - 5 , this embodiment provides a photovoltaic module, including a photovoltaic frame 600, a glass back plate 500, a battery cell 300 and a special-shaped photovoltaic glass. The special-shaped photovoltaic glass includes a glass body 100. The glass body 100 and the glass back plate 500 are respectively arranged on both sides of the battery cell 300. The glass back plate 500 and the battery cell 300 are both attached to the glass body 100. The glass body 100 is installed on the sunny side of the photovoltaic frame 600. The glass body 100 and the glass back plate 500 sandwich the battery cell 300 in the middle to form the main photoelectric conversion element, which can convert solar energy into electrical energy. The front and rear glass body 100 and glass back plate 500 can provide good protection for the battery cell 300, playing the functions of dust prevention and rain and snow prevention. At the same time, the glass material will not cause blockage to the battery cell 300, which is beneficial to the battery cell 300 to perform the photoelectric conversion function.

[0029] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 3, The special-shaped photovoltaic glass is used to be installed on the sunny side of the photovoltaic frame 600, that is, the special-shaped photovoltaic glass directly receives sunlight. The glass body 100 includes a flat part 110, and the flat part 110 plays a role in absorbing light energy. On both sides of the flat part 110, curved parts 120 are connected respectively. The curved parts 120 bend and extend towards the backlight side. The end surface of the free end of the curved part 120 is parallel to the flat part 110, so that the arc range of the curved part 120 is large enough to produce an enclosing effect and can sufficiently cover the photovoltaic frame 600. The outer curved surface of the curved part 120 is smoothly transitioned with the outer side surface of the photovoltaic frame 600, so that the edge of the curved part 120 covers the edge of the photovoltaic frame 600, and water accumulation, dust, etc. directly slide down from the outer side surface of the curved part 120 and will not enter the gap between the curved part 120 and the photovoltaic frame 600, which is convenient for cleaning and drainage.

[0030] Furthermore, in this embodiment, please refer to Figure 3 and Figure 5 , a shielding layer 130 is provided on the inner side surface of the curved part 120. The shielding layer 130 can shield the overflow of the colloid during the lamination of the photovoltaic module, reducing the burden on the edge trimming process. The shielding layer 130 is completely attached to the inner side surface of the curved part 120, which can avoid generating a gap between the shielding layer 130 and the inner side of the curved part 120 and prevent the colloid from contaminating the inner side of the curved part 120. Specifically, the structure adopted by the shielding layer 130 is a screen printing coating. The screen printing coating can adapt to the curved surface environment and is not restricted by the shape and size of the curved part 120. In addition, the screen printing coating has good light resistance performance and can overcome the influence of temperature and sunlight, being suitable for outdoor environments. The screen printing coating adopts the same color as the photovoltaic frame 600 to improve the aesthetics of the photovoltaic module.

[0031] In this embodiment, please continue to refer to Figure 1 , the sizes of the battery chip 300 and the glass backplane 500 are not larger than the size of the flat part 110, which can make the ranges of the battery chip 300 and the glass backplane 500 not exceed the range of the flat part 110, avoiding the contact between the battery chip 300, the glass backplane 500 and the curved part 120 and reducing the lamination difficulty. A first adhesive film 200 is provided between the glass body 100 and the battery chip 300, and a second adhesive film 400 is provided between the battery chip 300 and the glass backplane 500. The first adhesive film 200 and the second adhesive film 400 mainly play a role in bonding the glass body 100, the battery chip 300 and the glass backplane 500. The main function is to protect the battery chip 300 and encapsulate it into a photovoltaic module that can output direct current. The POE adhesive film is adopted in this embodiment. It uses POE resin as the raw material and is used for single-piece PERC double-sided and N-type battery modules. It is widely used especially in the double-glass modules of high-efficiency batteries and has a higher water vapor barrier rate, better weather resistance performance and stronger anti-PID performance.

[0032] Furthermore, a plurality of lead holes are formed in the glass backplane 500. The solar cell 300 is connected with a bus bar lead 310, and the bus bar lead 310 passes through the lead holes. The lead holes are arranged on the glass backplane 500. With respect to the sunny side, it can be avoided that the lead holes directly contact rain, snow and dust, thereby increasing the reliability of the photovoltaic module.

[0033] In this embodiment, as Figure 2 shown, a recessed retreat portion 610 is provided on the sunny side of the photovoltaic frame 600. The curved surface of the glass body 100 covers the retreat portion 610. The retreat portion 610 can provide sufficient space for the positioning and installation of the curved surface of the glass body 100. A gap groove 611 is provided in the retreat portion 610, and an adhesive is provided in the gap groove 611. The adhesive bonds the glass body 100 and the photovoltaic frame 600. The adhesive used is silica gel. The silica gel has high bonding strength, high temperature resistance, ultraviolet resistance, and good thermal stability, and is suitable for the solar light environment faced by the photovoltaic module.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] The protection scope of the present invention is only defined by the claims. Benefiting from the teachings of the present invention, those skilled in the art can easily recognize that alternative structures of the structures disclosed in the present invention can be used as feasible alternative embodiments, and the embodiments disclosed in the present invention can be combined to produce new embodiments, which also fall within the scope of the appended claims.

Claims

1. A special-shaped photovoltaic glass, comprising a glass body (100), used for installation on the sun-facing side of a photovoltaic frame (600), characterized in that: The glass body (100) comprises a planar portion (110), the two sides of the planar portion (110) are connected to curved portion portions (120), the curved portion portions (120) are bent and extended toward the backlight side, and the end surface of the free end of the curved portion portion (120) is parallel to the planar portion (110); the outer curved surface of the curved portion portion (120) smoothly transitions with the outer side surface of the photovoltaic frame (600).

2. The special-shaped photovoltaic glass according to claim 1, characterized in that: The inner side surface of the curved surface portion (120) is provided with a shielding layer (130), and the shielding layer (130) is used to shield the colloid from overflowing.

3. The special-shaped photovoltaic glass according to claim 2, characterized in that: The shielding layer (130) is a silk-screen coating.

4. The special-shaped photovoltaic glass according to claim 2, characterized in that: The shielding layer (130) is completely in contact with the inner side surface of the curved surface portion (120).

5. A photovoltaic module, characterized in that: It comprises a photovoltaic frame (600), a glass back plate (500), a battery cell (300) and the special-shaped photovoltaic glass according to any one of claims 1 to 4, wherein the glass body (100) and the glass back plate (500) are respectively arranged on both sides of the battery cell (300), the glass back plate (500) and the battery cell (300) are both bonded to the glass body (100), and the glass body (100) is installed on the sunny side of the photovoltaic frame (600).

6. A photovoltaic module according to claim 5, characterized in that: The dimensions of the battery cell (300) and the glass back plate (500) are not greater than the dimensions of the plane portion (110).

7. A photovoltaic module according to claim 5, characterized in that: A first adhesive film (200) is arranged between the glass body (100) and the battery cell (300), and a second adhesive film (400) is arranged between the battery cell (300) and the glass back plate (500).

8. A photovoltaic module according to claim 5, characterized in that: The glass back plate (500) is provided with a plurality of lead holes, the battery sheet (300) is connected with a busbar lead (310), and the busbar lead (310) passes through the lead holes.

9. A photovoltaic module according to claim 5, characterized in that: The photovoltaic frame (600) is provided with an inwardly recessed retreat portion (610) on the sun-facing side, and the curved surface of the glass body (100) covers the retreat portion (610).

10. A photovoltaic module according to claim 9, characterized in that: A gap groove (611) is arranged in the retreat portion (610), and an adhesive is arranged in the gap groove (611), and the adhesive bonds the glass body (100) and the photovoltaic frame (600).

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