Photovoltaic solder ribbon and photovoltaic module

Abstract

The present invention discloses a photovoltaic solder ribbon and a photovoltaic module. The photovoltaic solder ribbon includes at least one solder ribbon unit, and each solder ribbon unit includes a solder ribbon body and a black reflective layer provided on at least a part of the light-receiving surface of the solder ribbon body; the solder ribbon body includes a solder ribbon substrate and a solder layer provided on the backlight surface of the solder ribbon substrate; by providing a black reflective layer on the surface of the solder ribbon body, it has the anti-glare characteristic while improving the reflectivity of the solder ribbon, so as to effectively reduce the power loss of the black photovoltaic module, thereby reducing the number of black photovoltaic modules required for a photovoltaic power station of the same scale and lowering the cost.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic cells, and particularly to photovoltaic solder tapes and photovoltaic modules. Background Art

[0002] Photovoltaic solder tapes are important components in photovoltaic cells, which are applied to the connection between cells of photovoltaic modules and play the role of conducting and aggregating electricity.

[0003] Currently, in order to endow photovoltaic modules with better anti-glare characteristics, all-black photovoltaic modules have been developed. In all-black photovoltaic modules, the cells, frames and solder tapes are all black. Among them, the black solder tapes usually have a black organic coating on the surface of conventional solder tapes.

[0004] However, currently the black coating is usually a matte coating that completely covers the surface of the solder tape, and the reflectivity is very low. The power of photovoltaic modules using such black solder tapes is much lower than that of conventional photovoltaic modules of the same specifications. As a result, more cells, solder tapes, etc. are required to achieve the same power generation efficiency as conventional photovoltaic modules. Therefore, for a photovoltaic power station using current all-black photovoltaic modules, more all-black modules are required for the same scale, resulting in higher costs. Summary of the Invention

[0005] The object of the present invention is to provide a photovoltaic solder tape and a photovoltaic module that have anti-glare property, better power generation efficiency and low cost.

[0006] The technical solution of the present invention is as follows: In the first aspect, the present invention provides a photovoltaic solder tape, which includes at least one solder tape unit. Each solder tape unit includes a solder tape body and a black reflective layer provided on at least part of the light-receiving surface of the solder tape body; the solder tape body includes a solder tape substrate and a solder layer provided on the backlight surface of the solder tape substrate.

[0007] In a preferred embodiment, when the black reflective layer is provided on part of the light-receiving surface of the solder tape body, the black reflective layer is spaced along the length direction of the light-receiving surface of the solder tape body on the light-receiving surface of the solder tape body;

[0008] and / or, the black reflective layer is partially provided on the light-receiving surface of the solder tape body along the width direction of the light-receiving surface of the solder tape body.

[0009] In a preferred embodiment, the black reflective layer is spaced at equal intervals along the length direction of the light-receiving surface of the solder tape body on the light-receiving surface of the solder tape body.

[0010] In a preferred embodiment, the black reflective layer is partially provided on the light-receiving surface of the solder tape body along the width direction of the light-receiving surface of the solder tape body and its length is equal to the length of the light-receiving surface of the solder tape body.

[0011] In a preferred embodiment, the solder tape substrate is a copper tape; the solder tape substrate includes a first strip member with a uniform cross-section and a quadrilateral shape;

[0012] Or the solder tape substrate includes a first strip member with a uniform cross-section, and through holes are provided on the first strip member;

[0013] Or the solder tape substrate includes at least two first strip members arranged in parallel, and a connecting strip member is connected between the first strip members;

[0014] Or the solder tape substrate includes a connected first strip member and a second strip member, and the second strip member is arranged on the same side of the first strip member along the length direction of the first strip member.

[0015] In a preferred embodiment, the solder tape body further includes a solder layer provided on the light-receiving surface of the solder tape substrate.

[0016] In a preferred embodiment, the solder tape body further includes an electrically conductive adhesive layer provided on the backlight surface of the solder tape substrate.

[0017] In a preferred embodiment, the black reflective layer is a black reflective film layer or a black reflective coating.

[0018] In a preferred embodiment, the black reflective coating is adhered to the light-receiving surface of the solder tape body by printing or spraying or printing or electroplating, and the black reflective film layer is adhered to the light-receiving surface of the solder tape body by glue.

[0019] In a second aspect, the present invention further provides a photovoltaic module, including the photovoltaic solder tape according to any one of the first aspects.

[0020] Compared with the prior art, the advantages of the present invention are: The present invention provides a photovoltaic solder tape and a photovoltaic module. The photovoltaic solder tape includes at least one solder tape unit, and each solder tape unit includes a solder tape body and a black reflective layer provided on at least a part of the light-receiving surface of the solder tape body; the solder tape body includes a solder tape substrate and a solder layer provided on the backlight surface of the solder tape substrate; a black reflective layer is provided on the surface of the solder tape body, which has the anti-glare property and improves the reflectivity of the solder tape, so as to effectively reduce the power loss of the black photovoltaic module, thereby reducing the number of black photovoltaic modules required for a photovoltaic power station of the same scale and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 This is the top view of the photovoltaic solder ribbon provided by Embodiment 1 of the present invention;

[0023] Figure 2 This is the side view of the photovoltaic solder ribbon provided by Embodiment 1 of the present invention;

[0024] Figures 3 - 8 This is the structural diagram of the photovoltaic solder ribbon provided by Embodiment 1 of the present invention;

[0025] Figure 9 This is the top view of the photovoltaic solder ribbon provided by Embodiment 2 of the present invention;

[0026] Figure 10 This is the side view of the photovoltaic solder ribbon provided by Embodiment 2 of the present invention;

[0027] Figure 11 This is the top view of a photovoltaic solder ribbon provided by Embodiment 3 of the present invention;

[0028] Figure 12 This is another top view of a photovoltaic solder ribbon provided by Embodiment 3 of the present invention;

[0029] Figure 13 This is the top view of the photovoltaic solder ribbon provided by Embodiment 4 of the present invention.

[0030] Wherein: 100, solder ribbon unit; 1, solder ribbon substrate; 11, first strip; 12, connecting strip; 13, through hole; 2, black reflective layer; 3, solder layer. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0032] As described in the background art, currently, a fully black photovoltaic module is composed of a black cell, a frame, and a solder ribbon to enable the photovoltaic module to have better anti-glare characteristics, wherein the black solder ribbon is obtained by coating a black matte coating on the surface of a conventional solder ribbon. Due to the poor reflectivity of the black matte coating, the photovoltaic module using the black solder ribbon needs to use more components such as cells and solder ribbons to achieve the target power compared with a conventional photovoltaic module, resulting in a significant increase in production cost.

[0033] Embodiment 1: This embodiment provides a photovoltaic solder ribbon. Refer to Figure 1 AndFigure 2 As shown, the photovoltaic solder ribbon includes at least one solder ribbon unit 100. Each solder ribbon unit 100 includes a solder ribbon body and a black reflective layer 2 disposed on at least a part of the light-receiving surface of the solder ribbon body. The solder ribbon body includes a solder ribbon substrate 1 and a solder layer 3 disposed on the backlight surface of the solder ribbon substrate 1. In this embodiment, preferably, the black reflective layer 2 is disposed on the entire light-receiving surface 1 of the entire solder ribbon body. In this embodiment, as Figure 2 shown, the backlight surface of the solder ribbon substrate 1 is covered with a solder layer 3 while the light-receiving surface of the solder ribbon substrate 1 does not have a solder layer 3, and the light-receiving surface of the solder ribbon substrate 1 is directly attached to the black reflective layer 2. The black reflective layer 2 is a black coating or film layer that can reflect light of a specific wavelength. Specifically, the black reflective layer includes resin, pigment, and metal oxide.

[0034] In a preferred embodiment, referring to Figure 1 shown, the solder ribbon substrate 1 is a copper strip; the solder ribbon substrate 1 includes a first strip-shaped member 1 with a uniform cross-section and a quadrilateral shape. Exemplarily, the solder ribbon substrate 1 is a copper strip with a uniform cross-section and a quadrilateral shape. Preferably, the solder ribbon substrate 1 is a flat copper strip. The light-receiving surface and the backlight surface of the solder ribbon substrate 1 are two relatively large and parallel surfaces of the flat copper strip with a uniform cross-section and a rectangular shape. The cross-section of the solder ribbon substrate 1 can also be other shapes such as triangular, trapezoidal, circular, etc.

[0035] Or: Referring to Figure 3 shown, the solder ribbon substrate 1 includes a first strip-shaped member 11 with a uniform cross-section, and through holes 13 are provided on the first strip-shaped member 11. Exemplarily, the solder ribbon substrate 1 includes a first strip-shaped member 11 with a uniform cross-section, and the same-shaped and equal-sized through holes are provided at equal intervals on the first strip-shaped member 11.

[0036] Or: The solder ribbon substrate 1 includes at least two first strip-shaped members 11 arranged in parallel, and a connecting strip-shaped member 12 is connected between the first strip-shaped members 11. Exemplarily, referring to Figure 4 shown, the solder ribbon substrate 1 includes two first strip-shaped members 11 arranged in parallel, and a plurality of connecting strip-shaped members 12 are connected between the first strip-shaped members 11. Each connecting strip-shaped member 12 is perpendicular to the first strip-shaped members 11, and both ends of each connecting strip-shaped member 12 are respectively connected to the two first strip-shaped members 11. The arrangement of the black reflective layer 2 is preferably as Figure 4 and Figure 5 shown.

[0037] In another embodiment, referring to Figure 6As shown, the solder tape substrate 1 includes at least three first strip members 11 arranged in parallel. Preferably, it includes three first strip members 11. The three first strip members 11 are connected by connecting strip members 12. Each connecting strip member 12 is perpendicular to the first strip member 11. Each connecting strip member 12 straddles the three first strip members 11 and is respectively connected to the three first strip members 11. The black reflective layer is arranged as shown.

[0038] In another embodiment, referring to Figure 7 As shown, the solder tape substrate 1 includes three first strip members 11 arranged in parallel. The adjacent two first strip members 11 are connected by connecting strip members 12 perpendicular to the first strip members 11. Of course, any combination of the composition forms of the above solder tape substrate 1 can be made in the same photovoltaic solder tape, and this embodiment does not limit this.

[0039] In another embodiment, referring to Figure 8 As shown, the solder tape substrate 1 includes a connected first strip member 11 and second strip members 12. There is one first strip member 11 and at least two second strip members 12. The second strip members 12 are arranged on the same side of the first strip member 11 along the length direction of the first strip member 11. Preferably, when the number of the second strip members 12 is greater than 2, the intervals between the second strip members 12 are equal. The black reflective layer covers the overall light-receiving surface of the solder tape substrate 1.

[0040] In a preferred embodiment, the black reflective layer 2 is a black reflective film layer or a black reflective coating. The black reflective layer 2 can be a black reflective coating or a black reflective film layer. In a preferred embodiment, the black reflective coating is formed into a layered structure by printing or spraying or printing or electroplating on the solder tape body, and the black reflective film layer is first made into a film layer and then pasted on the light-receiving surface of the solder tape body by glue.

[0041] Preferably, the solder layer is a tin alloy layer. In a preferred embodiment, a conductive adhesive layer (not shown in the figure) is also connected to the backlight surface of the solder tape substrate 1. Specifically, the backlight surface of the solder tape substrate 1 can be directly connected to the conductive adhesive layer.

[0042] The photovoltaic solder tape provided in this embodiment includes at least one solder tape unit. Each solder tape unit includes a solder tape body and a black reflective layer covering the overall light-receiving surface of the solder tape body; the solder tape body includes a solder tape substrate and a solder layer provided on the backlight surface of the solder tape substrate; a black reflective layer is provided on the surface of the solder tape body, which has the anti-glare characteristic and improves the reflectivity of the solder tape, so as to effectively reduce the power loss of the black photovoltaic module, thereby reducing the number of black photovoltaic modules with the same power battery and reducing the cost.

[0043] Embodiment 2: This embodiment provides a photovoltaic solder tape, referring to Figure 9 And Figure 10As shown, the photovoltaic solder ribbon includes at least one solder ribbon unit 100, and each solder ribbon unit 100 includes a solder ribbon body and a black reflective layer 2 provided on the light-receiving surface of a part of the solder ribbon body; the solder ribbon body includes a solder ribbon substrate 1 and a solder layer 3 provided on the backlight surface of the solder ribbon substrate 1. The black reflective layer 2 is a black coating or film layer that can reflect light of a specific wavelength. Specifically, the black reflective layer includes resin, pigment, and metal oxide.

[0044] The black reflective layer 2 is provided on the light-receiving surface of a part of the solder ribbon body. In this embodiment, referring to Figure 9 As shown, the black reflective layer 2 is arranged at intervals along the length direction of the light-receiving surface of the solder ribbon body on the light-receiving surface of the solder ribbon body. More preferably, the black reflective layer 2 is arranged at equal intervals along the length direction of the light-receiving surface of the solder ribbon body on the light-receiving surface of the solder ribbon body.

[0045] In a preferred embodiment, the solder ribbon substrate 1 is a copper strip with a uniform cross-section and a quadrilateral shape. Preferably, the solder ribbon substrate 1 is a flat copper strip. More preferably, the solder ribbon body includes a flat copper strip with a uniform cross-section and a rectangular shape, and the light-receiving surface and the backlight surface of the solder ribbon substrate 1 are two relatively large and parallel surfaces of the flat copper strip with a uniform cross-section and a rectangular shape. Of course, the cross-section of the solder ribbon substrate 1 can also be other shapes such as triangular, trapezoidal, circular, etc.

[0046] The solder ribbon body includes a solder ribbon substrate 1 and a solder layer 3 provided on the backlight surface of the solder ribbon substrate 1. In a preferred embodiment, the solder ribbon body further includes a solder layer 3 provided on the light-receiving surface of the solder ribbon substrate 1. That is, it can be that the backlight surface of the solder ribbon substrate 1 is covered with the solder layer 3 while the light-receiving surface is not provided with the solder layer 3, or it can be that both the light-receiving surface and the backlight surface of the solder ribbon substrate 1 are provided with the solder layer 3.

[0047] Preferably, the solder layer is a tin alloy layer. In a preferred embodiment, a conductive adhesive layer (not shown in the figure) is further connected to the backlight surface of the solder ribbon substrate 1. Specifically, the backlight surface of the solder ribbon substrate 1 can be directly connected to the conductive adhesive layer.

[0048] In a preferred embodiment, the black reflective layer 2 is a black reflective film layer or a black reflective coating. The black reflective layer 2 can be a black reflective coating or a black reflective film layer. In a preferred embodiment, the black reflective coating is formed into a layered structure by printing, spraying, printing, or electroplating on the solder ribbon body and covers the light-receiving surface of the solder ribbon body, and the black reflective film layer is first made into a film layer and then pasted on the light-receiving surface of the solder ribbon body by glue.

[0049] The photovoltaic solder ribbon provided by this embodiment includes at least one solder ribbon unit, and each solder ribbon unit includes a solder ribbon body and a black reflective layer; the solder ribbon body includes a light-receiving surface and a second surface of the solder ribbon body, the black reflective layer covers a part of the light-receiving surface of the solder ribbon body, and the solder ribbon body further includes an intermediate layer disposed between the light-receiving surface of the solder ribbon body and the black reflective layer and / or on the second surface; by providing a black reflective layer on a part of the surface of the solder ribbon body, while having the anti-glare property, the reflectivity of the solder ribbon is improved, so as to effectively reduce the power loss of the black photovoltaic module, thereby reducing the number of black photovoltaic modules with the same power battery and reducing the cost.

[0050] Embodiment 3: The photovoltaic solder ribbon provided by this embodiment, the difference between this embodiment and Embodiment 2 is that: in this embodiment, the black reflective layer 2 is partially disposed on the light-receiving surface of the solder ribbon body along the width direction of the light-receiving surface of the solder ribbon body. Refer to Figure 11 As shown, the black reflective layer 2 is disposed on a part of the light-receiving surface of the solder ribbon body, and there is a blank space on one side of the black reflective layer 2 in the width direction of the light-receiving surface of the solder ribbon body. Refer to Figure 12 As shown, the black reflective layer 2 is attached to a part of the light-receiving surface of the solder ribbon body, and there are blank spaces on both sides of the black reflective layer 2 in the width direction of the light-receiving surface of the solder ribbon body.

[0051] In a preferred embodiment, the black reflective layer 2 is partially disposed on the light-receiving surface of the solder ribbon body along the width direction of the light-receiving surface of the solder ribbon body and its length is equal to the length of the light-receiving surface of the solder ribbon body.

[0052] Embodiment 4: The photovoltaic solder ribbon provided by this embodiment, refer to Figure 13 As shown, the difference between this embodiment and Embodiment 2 is that: in this embodiment, the black reflective layer 2 is disposed at intervals on the light-receiving surface of the solder ribbon body along the length direction of the light-receiving surface of the solder ribbon body and the black reflective layer 2 is partially attached to the light-receiving surface of the solder ribbon body along the width direction of the light-receiving surface of the solder ribbon body. Among them, the black reflective layer 2 being partially disposed on the light-receiving surface of the solder ribbon body along the width direction of the light-receiving surface of the solder ribbon body can have a blank space on one side of the width direction of the light-receiving surface of the solder ribbon body or blank spaces on both sides of the width direction of the light-receiving surface of the solder ribbon body. This embodiment does not make a limitation on this.

[0053] Embodiment 5: The photovoltaic module provided by this embodiment includes the photovoltaic solder ribbon provided by any one of Embodiments 1 to 4.

[0054] It should be noted that the photovoltaic module provided by this embodiment and the embodiments of the photovoltaic solder ribbon provided by Embodiments 1 to 4 belong to the same concept, and the beneficial effects are as described in the above embodiments and will not be elaborated here.

[0055] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other, and the key point of each embodiment is to illustrate the differences from other embodiments.

[0056] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, they can be directly connected or indirectly connected through an intermediate medium. 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 circumstances. The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and 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 thus cannot be construed as a limitation of the present invention.

[0057] Although the preferred embodiments in the embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

[0058] Of course, the above embodiments are only used to illustrate the technical concept and features of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot be used to limit the protection scope of the present invention. Any modification made according to the spirit and essence of the main technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. A kind of photovoltaic welding ribbon, characterized in that, Comprising at least one solder strip unit, each of the solder strip units comprising a solder strip body and a black reflective layer provided on the light-receiving surface of a part of the solder strip body; the solder strip body comprising a solder strip substrate and a solder layer provided on the backlight surface of the solder strip substrate; wherein, the black reflective layer is partially provided on the light-receiving surface of the solder strip body along the width direction of the light-receiving surface of the solder strip body; the solder strip substrate comprises three first strip members, the three first strip members are connected by connecting strip members, each connecting strip member is perpendicular to the first strip member, each connecting strip member straddles the three first strip members and is respectively connected to the three first strip members, and a black reflective layer is provided on the connecting strip member.

2. The photovoltaic solder ribbon according to claim 1, wherein When the black reflective layer is provided on the light-receiving surface of a part of the solder strip body, the black reflective layer is spaced along the length direction of the light-receiving surface of the solder strip body on the light-receiving surface of the solder strip body.

3. The photovoltaic soldering ribbon according to claim 2, wherein, The black reflective layer is spaced at equal intervals along the length direction of the light-receiving surface of the solder strip body on the light-receiving surface of the solder strip body.

4. The photovoltaic soldering ribbon according to claim 2, wherein The black reflective layer is partially provided on the light-receiving surface of the solder strip body along the width direction of the light-receiving surface of the solder strip body and its length is equal to the length of the light-receiving surface of the solder strip body.

5. The PV ribbon according to claim 1, characterized in that, The solder strip body further comprises a solder layer provided on the light-receiving surface of the solder strip substrate.

6. The photovoltaic soldering ribbon according to claim 1, wherein, The solder strip body further comprises an electrically conductive adhesive layer provided on the backlight surface of the solder strip substrate.

7. The photovoltaic solder ribbon according to claim 1, characterized in that, The black reflective layer is a black reflective film layer or a black reflective coating.

8. The photovoltaic solder ribbon according to claim 7, wherein The black reflective coating is applied to the light-receiving surface of the solder strip body by printing or spraying or printing or electroplating, and the black reflective film layer is adhered to the light-receiving surface of the solder strip body by glue.

9. A photovoltaic module, characterized in that, Comprising a photovoltaic solder strip according to any one of claims 1-8.

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