Photovoltaic module and photovoltaic system

Abstract

The embodiment of the utility model provides a photovoltaic assembly and a photovoltaic system, the photovoltaic assembly comprises a first substrate, a photovoltaic cell, a packaging layer, a protection layer and a second substrate, one of the lower surface of the first substrate and the upper surface of the second substrate is provided with an annular projection along the periphery, and the lower surface of the first substrate and the upper surface of the second substrate are oppositely arranged; the photovoltaic cell and the packaging layer are arranged between the first substrate and the second substrate and are arranged in an area surrounded by the annular bulge, and the packaging layer is used for fixing the photovoltaic cell; and the protection layer is arranged between the first substrate and the second substrate, is arranged outside an area surrounded by the annular bulge, is arranged around the annular bulge, and is used for protecting the photovoltaic cell and the packaging layer. According to the technical scheme, the technical problem that an existing photovoltaic assembly is imperfect in structure is solved.

Description

Technical Field

[0001] The utility model relates to the photovoltaic field, in particular to a photovoltaic component and a photovoltaic system. Background Art

[0002] The existing double-glass photovoltaic modules include a first substrate, a photovoltaic cell, an encapsulation layer and a second substrate, wherein the encapsulation layer encapsulates the photovoltaic cell between the first substrate and the second substrate. Photovoltaic modules with this structure have many defects, such as water vapor infiltration from the edge, which affects the service life of the photovoltaic cell, and the encapsulation layer gradually ages during long-term use, causing the photovoltaic cell to shift and the overall structure to become loose. Utility Model Content

[0003] The embodiments of the utility model provide a photovoltaic module and a photovoltaic system, which solve the technical problem of imperfect structures of existing photovoltaic modules.

[0004] In order to solve the above technical problems, the embodiment of the utility model provides a photovoltaic module, including a first substrate, a photovoltaic cell, an encapsulation layer, a protective layer and a second substrate, wherein:

[0005] One of the lower surface of the first substrate and the upper surface of the second substrate is provided with an annular protrusion along the periphery, and the lower surface of the first substrate and the upper surface of the second substrate are arranged opposite to each other;

[0006] The photovoltaic cell and the packaging layer are arranged between the first substrate and the second substrate, and are arranged within the area surrounded by the annular protrusion, and the packaging layer is used to fix the photovoltaic cell;

[0007] The protective layer is arranged between the first substrate and the second substrate, outside the area surrounded by the annular protrusion, and around the annular protrusion. The protective layer is used to protect the photovoltaic cell and the packaging layer.

[0008] Furthermore, the other of the lower surface of the first substrate and the upper surface of the second substrate is provided with an annular groove matched with the annular protrusion along its periphery, and the top of the annular protrusion extends to the annular groove.

[0009] Furthermore, a gap is left between the top of the annular protrusion and the bottom of the annular groove.

[0010] Furthermore, the gap is filled with the encapsulation layer and / or the protection layer.

[0011] Furthermore, a gap is left between the top of the annular protrusion and the other of the lower surface of the first substrate and the upper surface of the second substrate.

[0012] Furthermore, the annular protrusion is a light-transmitting protrusion.

[0013] Furthermore, the height of the protection layer is equal to the distance between the lower surface of the first substrate and the upper surface of the second substrate.

[0014] Furthermore, the protective layer fills up the area between the first substrate and the second substrate outside the area surrounded by the annular protrusion.

[0015] Furthermore, the protective layer extends to the side surface of the first substrate, the edge of the upper surface of the first substrate, the side surface of the second substrate and / or the edge of the lower surface of the second substrate.

[0016] An embodiment of the utility model further provides a photovoltaic system, comprising a support assembly and any one of the photovoltaic assemblies described above.

[0017] Beneficial Effects

[0018] The photovoltaic module and photovoltaic system provided by the embodiments of the utility model include a first substrate, a photovoltaic cell, a packaging layer, a protective layer and a second substrate. One of the lower surface of the first substrate and the upper surface of the second substrate is provided with an annular protrusion along the periphery. The annular protrusion forms a first protective barrier for the photovoltaic cell and the packaging layer, and the protective layer forms a second protective barrier for the photovoltaic cell and the packaging layer. The annular protrusion can also play a supporting role to prevent serious deformation of the structure of the photovoltaic module under the action of external force. The annular protrusion can also play a role in separating the packaging layer and the protective layer to prevent glue penetration between the packaging layer and the protective layer during long-term use.

[0019] Other features and corresponding beneficial effects of the utility model are described in the latter part of the specification, and it should be understood that at least part of the beneficial effects become obvious from the records in the specification of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a second substrate in a photovoltaic module provided in Embodiment 1 of the utility model;

[0021] Figure 2 A schematic diagram of a first substrate in a photovoltaic module provided in Embodiment 1 of the utility model;

[0022] Figure 3 This is a cross-sectional schematic diagram of a photovoltaic module provided in Embodiment 1 of the present utility model. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the following is a further detailed description of the utility model through specific implementation methods combined with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] Embodiment 1:

[0025] The photovoltaic module provided in this embodiment includes a first substrate, a photovoltaic cell, an encapsulation layer, a protective layer and a second substrate. One of the lower surface of the first substrate and the upper surface of the second substrate is provided with an annular protrusion along the periphery, and the lower surface of the first substrate and the upper surface of the second substrate are arranged opposite to each other; the photovoltaic cell and the encapsulation layer are arranged between the first substrate and the second substrate, and are arranged within the area surrounded by the annular protrusion, and the encapsulation layer is used to fix the photovoltaic cell; the protective layer is arranged between the first substrate and the second substrate, and is arranged outside the area surrounded by the annular protrusion, and is arranged around the annular protrusion, and the protective layer is used to protect the photovoltaic cell and the encapsulation layer.

[0026] The first substrate and the second substrate include but are not limited to glass substrates, such as tempered glass substrates.

[0027] Photovoltaic cells include but are not limited to solar cells. Photovoltaic cells can be arranged in an array between the first substrate and the second substrate.

[0028] The encapsulation layer can be set by curing the first colloid, and the composition of the first colloid includes but is not limited to ethylene-vinyl acetate copolymer (EVA). After the photovoltaic cells are arranged, the first colloid can be injected into the area surrounded by the annular protrusion between the first substrate and the second substrate, and the encapsulation layer is formed by adding curing to fix the photovoltaic cells. Of course, the encapsulation layer is not limited to being formed by colloid molding, and can also have other forms. The encapsulation layer can be a light-transmitting material.

[0029] The protective layer can be set by curing the second colloid, and the composition of the second colloid includes but is not limited to butyl rubber. After the encapsulation layer is formed, or it is set simultaneously with the encapsulation layer, the setting method includes but is not limited to injecting the second colloid along the outer periphery of the annular protrusion between the first substrate and the second substrate, and forming the protective layer by adding and curing. Of course, the protective layer is not limited to being formed by colloid molding, and can also have other forms, such as tape. Or the protective layer can be a light-transmitting material.

[0030] The annular protrusions arranged along the periphery of one of the lower surface of the first substrate and the upper surface of the second substrate are at a preset distance from the edge of the substrate, and the preset distance is reserved for the protective layer. The annular shapes involved in the embodiments of the utility model include but are not limited to square, circular, and irregular shapes.

[0031] The annular protrusion may be a light-transmitting protrusion and may be integrally formed with the lower surface of the first substrate or the upper surface of the second substrate.

[0032] In some embodiments, the other of the lower surface of the first substrate and the upper surface of the second substrate is provided with an annular groove adapted to the annular protrusion along the periphery, and the top of the annular protrusion extends to the annular groove. Through the cooperation between the annular protrusion and the annular groove, the first substrate and the second substrate can be positioned during the assembly process, and the first substrate and the second substrate can be prevented from lateral displacement during long-term use. In addition, the cooperation between the annular protrusion and the annular groove is conducive to the protection of the photovoltaic cell and the packaging layer in the area surrounded by the annular protrusion.

[0033] In some embodiments, a gap is left between the top of the annular protrusion and the bottom of the annular groove. When an external force squeezes the first substrate and the second substrate, the gap can play a good buffering role. At the same time, the gap also reserves accommodation space for the encapsulation layer and the protective layer. During the curing process of the encapsulation layer and / or the protective layer, since the amount of colloid is difficult to control, the excess colloid can be retained in the gap.

[0034] In some embodiments, when the other of the lower surface of the first substrate and the upper surface of the second substrate is not provided with an annular groove to match the annular protrusion, a gap is left between the top of the annular protrusion and the other of the lower surface of the first substrate and the upper surface of the second substrate. When an external force squeezes the first substrate and the second substrate, the gap can play a good buffering role.

[0035] In some embodiments, the height of the protective layer is equal to the distance between the lower surface of the first substrate and the upper surface of the second substrate. The protective layer is in close contact with the lower surface of the first substrate and the upper surface of the second substrate, which provides better protection for the photovoltaic cell and the encapsulation layer.

[0036] In some embodiments, the protective layer fills the area outside the area surrounded by the annular protrusion between the first substrate and the second substrate. In addition to providing better protection for the photovoltaic cell and the encapsulation layer, this method can also fill the gap between the first substrate and the second substrate, making the overall structure of the photovoltaic module smoother.

[0037] In some embodiments, the protective layer extends to the side of the first substrate, the edge of the upper surface of the first substrate, the side of the second substrate and / or the edge of the lower surface of the second substrate. This method packages the first substrate and / or the second substrate into one piece, which is more solid and more airtight.

[0038] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings and implementation examples. Figure 1 , Figure 2 and Figure 3 A photovoltaic module provided in this embodiment mainly includes a first substrate 11, a photovoltaic cell 12, an encapsulation layer 13, a protective layer 14 and a second substrate 15, wherein the lower surface of the first substrate 11 and the upper surface of the second substrate 15 are arranged opposite to each other;

[0039] An annular protrusion 151 is provided along the periphery of the upper surface of the second substrate 15, and the annular protrusion 151 is integrally formed with the second substrate 15. An annular groove 111 adapted to the annular protrusion 151 is provided along the periphery of the lower surface of the first substrate 11, and the top of the annular protrusion 151 extends to the annular groove 111, and a gap is left between the top of the annular protrusion 151 and the bottom of the annular groove 111;

[0040] The photovoltaic cell 12 and the encapsulation layer 13 are disposed between the first substrate 11 and the second substrate 15 and are disposed within the area surrounded by the annular protrusion 151. The encapsulation layer 13 is used to fix the photovoltaic cell 12.

[0041] The protective layer 14 is disposed between the first substrate 11 and the second substrate 15, outside the area surrounded by the annular protrusion 151, and around the annular protrusion 151. The protective layer 14 is used to protect the photovoltaic cell 12 and the encapsulation layer 13. The protective layer 14 fills the area between the first substrate 11 and the second substrate 15 outside the area surrounded by the annular protrusion 151.

[0042] The embodiment of the utility model also provides a photovoltaic system, including a bracket assembly and the photovoltaic assembly provided by the above embodiment. The photovoltaic assembly can be installed in an environment with the aid of the bracket assembly, and the light receiving angle of the photovoltaic assembly can even be adjusted by the bracket assembly.

[0043] In the embodiment of the utility model, the photovoltaic cell, the encapsulation layer and the protective layer are all arranged between the first substrate and the second substrate. The photovoltaic cell and the encapsulation layer are arranged within the area surrounded by the annular protrusion, and the protective layer is arranged outside the area surrounded by the annular protrusion and around the annular protrusion. The encapsulation layer and the protective layer are separated by an annular protrusion. The encapsulation layer is used to fix the photovoltaic cell. The annular protrusion forms a first protective barrier for the photovoltaic cell and the encapsulation layer, and the protective layer forms a second protective barrier for the photovoltaic cell and the encapsulation layer. The annular protrusion can also play a supporting role to prevent the structure of the photovoltaic module from being seriously deformed under the action of external force. The annular protrusion can also separate the encapsulation layer and the protective layer to prevent glue penetration between the encapsulation layer and the protective layer during long-term use.

[0044] The above contents are further detailed descriptions of the embodiments of the utility model in combination with specific implementation methods, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, several simple deductions or substitutions can be made without departing from the concept of the utility model, which should be regarded as falling within the protection scope of the utility model.

Claims

1. A photovoltaic module, characterized in that: It includes a first substrate, a photovoltaic cell, an encapsulation layer, a protective layer and a second substrate, wherein: One of the lower surface of the first substrate and the upper surface of the second substrate is provided with an annular protrusion along the periphery, and the lower surface of the first substrate and the upper surface of the second substrate are arranged opposite to each other; The photovoltaic cell and the packaging layer are arranged between the first substrate and the second substrate, and are arranged within the area surrounded by the annular protrusion, and the packaging layer is used to fix the photovoltaic cell; The protective layer is arranged between the first substrate and the second substrate, outside the area surrounded by the annular protrusion, and around the annular protrusion. The protective layer is used to protect the photovoltaic cell and the packaging layer.

2. The photovoltaic module according to claim 1, characterized in that: The other of the lower surface of the first substrate and the upper surface of the second substrate is provided with an annular groove matched with the annular protrusion along the periphery, and the top of the annular protrusion extends to the annular groove.

3. The photovoltaic module according to claim 2, characterized in that: A gap is left between the top of the annular protrusion and the bottom of the annular groove.

4. The photovoltaic module according to claim 3, characterized in that: The gap is filled with the packaging layer and / or the protection layer.

5. The photovoltaic module according to claim 1, characterized in that: A gap is left between the top of the annular protrusion and the other of the lower surface of the first substrate and the upper surface of the second substrate.

6. The photovoltaic module according to claim 1, characterized in that: The annular protrusion is a light-transmitting protrusion.

7. The photovoltaic module according to any one of claims 1 to 6, characterized in that: The height of the protection layer is equal to the distance between the lower surface of the first substrate and the upper surface of the second substrate.

8. The photovoltaic module according to claim 7, characterized in that: The protection layer fills up the area between the first substrate and the second substrate except the area surrounded by the annular protrusion.

9. The photovoltaic module according to claim 8, characterized in that: The protection layer extends to a side surface of the first substrate, an edge of an upper surface of the first substrate, a side surface of the second substrate, and / or an edge of a lower surface of the second substrate.

10. A photovoltaic system, characterized in that: The invention comprises a support assembly and a photovoltaic assembly according to any one of claims 1 to 9.

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