A photovoltaic module and photovoltaic system

Abstract

The application is suitable for the technical field of solar cells, and particularly relates to a photovoltaic module and a photovoltaic system. The photovoltaic module comprises a bottom plate, the bottom plate having a first surface; a cell piece and a first transparent plate arranged on the first surface in sequence; and a transparent frame surrounding the edges of the bottom plate, the cell piece and the first transparent plate. The transparent frame surrounds the edges of the bottom plate, the cell piece and the first transparent plate to form a frameless photovoltaic module, which can effectively prevent water accumulation and dust accumulation, has lighter weight, and reduces production cost and transportation cost.

Description

Technical Field

[0001] This application belongs to the field of solar cell technology, and particularly relates to a photovoltaic module and a photovoltaic system. Background Technology

[0002] A photovoltaic (PV) module is a power generation device that uses semiconductor materials (such as silicon) to convert light energy into direct current (DC). Its core principle is based on the photovoltaic effect, achieving stable power generation through a solid-state structure with no moving parts. It is suitable for powering small electronic devices, integrating with building surfaces, and connecting to grid-connected power systems.

[0003] Existing photovoltaic modules mainly include two types: framed and frameless. Framed photovoltaic modules consist of laminates, aluminum alloy frames, and junction boxes. The aluminum alloy frames are heavy and costly, resulting in a heavy overall photovoltaic module and high cost. They are also prone to dust and water accumulation. Frameless solutions are only suitable for double-glass modules, which has a narrow range of applications and low mechanical strength. Utility Model Content

[0004] This application provides a photovoltaic module designed to address the problems of existing photovoltaic modules, such as heavy weight, easy dust and water accumulation, narrow applicability, and low mechanical strength.

[0005] This application provides a photovoltaic module, comprising:

[0006] The base plate has a first surface;

[0007] The battery cells and the first transparent plate are sequentially disposed on the first surface; and

[0008] A transparent frame surrounding the base plate, the battery cells, and the first transparent plate.

[0009] Furthermore, the first surface is provided with an anti-slip structure, which includes at least one of wavy grooves and patterns.

[0010] Furthermore, the base plate is an opaque base plate.

[0011] Furthermore, the base plate is a transparent base plate.

[0012] Furthermore, the base plate and the transparent frame are integrally formed.

[0013] The end of the transparent frame away from the base plate is aligned with the surface of the first transparent plate away from the battery cell.

[0014] Furthermore, the height of the transparent border is 5 mm to 10 mm.

[0015] Furthermore, the height of the base plate is 2 mm to 5 mm.

[0016] Furthermore, the width of the transparent border is 1 mm to 5 mm.

[0017] Furthermore, the base plate has openings, and the solar cells have lead wires that pass through the openings.

[0018] Furthermore, an adhesive film is provided between the first transparent plate and the battery cell, and between the battery cell and the base plate.

[0019] Secondly, this application also provides a photovoltaic system, including the photovoltaic module as described above.

[0020] The beneficial effects of this application are as follows: The photovoltaic module provided by this application includes a base plate having a first surface; solar cells and a first transparent plate sequentially disposed on the first surface; and a transparent frame surrounding the edges of the base plate, solar cells, and the first transparent plate. By surrounding the edges of the base plate, solar cells, and the first transparent plate with the transparent frame to form a frameless photovoltaic module, water and dust accumulation can be effectively prevented, the weight is lighter, and production and transportation costs are reduced. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of one embodiment of the photovoltaic module provided in this application;

[0022] Figure 2 This is a schematic diagram of the bottom frame of an embodiment of the photovoltaic module provided in this application;

[0023] Figure 3 This is a schematic diagram of another embodiment of the photovoltaic module provided in this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100-Bottom frame, 110-Bottom plate, 120-Transparent frame, 130-Groove, 210-Battery piece, 220-First transparent plate, 230-Second transparent plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. Examples of embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Furthermore, it should be understood that the specific embodiments described herein are merely for explaining this application and are not intended to limit this application.

[0027] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference values ​​and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0032] The photovoltaic module provided in this application includes a base plate having a first surface; solar cells and a first transparent plate sequentially disposed on the first surface; and a transparent frame surrounding the edges of the base plate, solar cells, and the first transparent plate. By surrounding the edges of the base plate, solar cells, and the first transparent plate with the transparent frame to form a frameless photovoltaic module, water and dust accumulation can be effectively prevented, resulting in lighter weight and reduced production and transportation costs.

[0033] like Figures 1 to 3 As shown in the figure, this application provides a photovoltaic module, including:

[0034] Base plate 110, base plate 110 having a first surface;

[0035] The battery cell 210 and the first transparent plate 220 are sequentially disposed on the first surface; and

[0036] A transparent frame 120 is provided around the edges of the base plate 110, the battery cell 210 and the first transparent plate 220.

[0037] In practice, the first transparent panel 220 can be regarded as the front glass of the photovoltaic module. The front glass includes, but is not limited to, tempered glass, coated glass, TCO glass, etc.

[0038] Tempered glass can effectively reduce optical reflection and improve power output, while also possessing properties such as resistance to mechanical shock and corrosion, which will not be elaborated upon here.

[0039] Coated glass is made by adding nano-coatings to tempered glass, which increases light transmittance by more than 2%.

[0040] TCO glass, or transparent conductive oxide coated glass, is mainly used in photovoltaic cells such as perovskite batteries, and will not be elaborated further.

[0041] The solar cell 210 is the main component of the photovoltaic module, and its primary function is to generate electricity. Optionally, the solar cell 210 includes, but is not limited to, crystalline silicon solar cells 210 and thin-film solar cells 210.

[0042] The battery cell 210 and the first transparent plate 220 are both disposed on the first surface of the base plate 110. The base plate 110 and the battery cell 210 can be bonded together by adhesive. For example, by applying adhesive to the first surface of the base plate 110, the base plate 110 and the battery cell 210 can be bonded together. Similarly, by applying adhesive to the first transparent plate 220, the first transparent plate 220 and the battery cell 210 can be bonded together.

[0043] As one possible implementation, an adhesive film is provided between the first transparent plate 220 and the battery cell 210, and between the battery cell 210 and the base plate 110, to bond the base plate 110, the battery cell 210 and the first transparent plate 220 together.

[0044] In some embodiments, the base plate 110 is an opaque base plate, that is, the base plate 110 is made of an opaque material, such as plastic or opaque rubber sheet, etc., without limitation.

[0045] When the base plate 110 is an opaque base plate, the transparent frame 120 surrounds the edges of the base plate 110, the solar cell 210 and the first transparent plate 220 to form a frameless photovoltaic module. At this time, the photovoltaic module can be regarded as a single-glass module, that is, a photovoltaic module with only front glass. Some light can be incident on the back of the solar cell 210 through the transparent frame 120, that is, the side of the solar cell 210 facing the base plate 110, to ensure the module efficiency.

[0046] As one possible implementation, the base plate 110 is a transparent base plate, that is, the base plate 110 is made of a transparent material, such as glass or PVC board, etc., without limitation.

[0047] When the base plate 110 is a transparent base plate, the transparent frame 120 surrounds the edges of the base plate 110, the solar cell 210 and the first transparent plate 220 to form a frameless photovoltaic module. At this time, the photovoltaic module can be regarded as a double-glass module, that is, the first transparent plate 220 can be regarded as the front glass of the photovoltaic module and the base plate 110 can be regarded as the rear glass of the photovoltaic module. Light can pass through the transparent frame 120 and the base plate 110 to the back of the solar cell 210, ensuring the module efficiency.

[0048] In some embodiments, when the base plate 110 is a transparent base plate, the base plate 110 and the transparent frame 120 can adopt an integral molding structure. For example, a groove 130 is made in a whole glass plate, then the bottom of the groove 130 is the base plate 110, the side wall of the groove 130 is the transparent frame 120, and the battery cell 210 and the first transparent plate 220 can be embedded and installed in the groove 130.

[0049] Optionally, the base plate 110 and the transparent frame 120 can form a base frame 100. The base frame is in the shape of an open container with a groove. During assembly, the machine lays the front glass, lays the front adhesive film on the glass, places the solar cells 210 on it, lays the rear adhesive film, puts the base frame 100 on it, sends it into the laminator, waits for the lamination to solidify, and cuts off the excess adhesive to obtain a frameless photovoltaic module.

[0050] Optionally, the height of the transparent border 120 is D1, where 5 mm ≤ D1 ≤ 10 mm. For example, the height of the transparent border 120 can be any value from 5.5 mm, 6 mm, 6.5 mm, 7 mm, 8 mm, 9 mm, or 5 mm to 10 mm, without limitation.

[0051] Optionally, the thickness of the base plate 110 is D2, where 2 mm ≤ D2 ≤ 5 mm. For example, the thickness of the base plate 110 is any value from 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 3 mm, 4 mm or 2 mm to 5 mm, without limitation.

[0052] Optionally, the width of the transparent border 120 is D3, where 1 mm ≤ D3 ≤ 5 mm. For example, the width of the transparent border 120 can be any value from 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, or 1 mm to 5 mm, without limitation.

[0053] Optionally, the bottom frame 100 can be made of polysulfone and glass fiber composite material, which has the advantages of low cost, light weight, resistance to lamination temperature without deformation, water vapor resistance, high mechanical strength, and flame retardancy.

[0054] It should be noted that the use of polysulfone and glass fiber composite material for the bottom frame 100 is an example of the embodiments of this application and not a specific limitation of this application. In other embodiments, the bottom frame 100 may also be made of other materials, such as tempered glass, without limitation.

[0055] The photovoltaic module provided in this application includes a base plate 110, which has a first surface; solar cells 210 and a first transparent plate 220 are sequentially disposed on the first surface; and a transparent frame 120 surrounds the edges of the base plate 110, solar cells 210, and the first transparent plate 220. The transparent frame 120 surrounding the edges of the base plate 110, solar cells 210, and the first transparent plate 220 forms a frameless photovoltaic module, which effectively prevents water and dust accumulation, is lighter, and reduces production and transportation costs.

[0056] In some embodiments, the end of the transparent frame 120 away from the base plate 110 is aligned with the side surface of the first transparent plate 220 away from the battery cell 210. The end of the transparent frame 120 away from the base plate 110 can be regarded as the top of the transparent frame 120. Similarly, the side surface of the first transparent plate 220 away from the battery cell 210 can be regarded as the top surface of the first transparent plate 220. By aligning the top of the transparent frame 120 with the top surface of the first transparent plate 220, the first transparent plate 220 and the transparent frame 120 are smoothly transitioned, improving product quality.

[0057] Optionally, the top of the transparent frame 120 being flush with the top surface of the first transparent plate 220 means that the height difference between the top of the transparent frame 120 and the top surface of the first transparent plate 220 is less than a preset difference. For example, the difference between the top of the transparent frame 120 and the top surface of the first transparent plate 220 is designed to be less than 0.05 mm to 0.1 mm, such as 0.06 mm, 0.07 mm, 0.08 mm or 0.09 mm, etc., without limitation.

[0058] In some embodiments, the first surface is provided with an anti-slip structure, which includes at least one of a wavy groove and a pattern. By providing the anti-slip structure, the roughness of the first surface can be effectively improved, so that the solar cell 110 can be more firmly installed on the first surface, thereby improving the mechanical structural performance of the photovoltaic module.

[0059] In some embodiments, the base plate 110 has an opening (not shown), and the solar cell 210 has a lead wire (not shown) that passes through the opening. In practice, the lead wire is led out through the opening to the outside of the photovoltaic module, and then electrically connected to a junction box or similar device.

[0060] Secondly, this application also provides a photovoltaic system, including the photovoltaic module as described above.

[0061] In practice, a photovoltaic system consists of photovoltaic modules, a controller, and an inverter. The photovoltaic modules are used to generate electricity, the controller controls the power and monitors the voltage, and the inverter is responsible for AC-DC conversion. These details will not be elaborated further.

[0062] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the structure and implementation principle of the photovoltaic system described above can be referred to the corresponding structure and implementation principle in the foregoing embodiments, and will not be repeated here.

[0063] The photovoltaic module provided in this application includes a base plate 110, which has a first surface; solar cells 210 and a first transparent plate 220 are sequentially disposed on the first surface; and a transparent frame 120 surrounds the edges of the base plate 110, solar cells 210, and the first transparent plate 220. The transparent frame 120 surrounding the edges of the base plate 110, solar cells 210, and the first transparent plate 220 forms a frameless photovoltaic module, which effectively prevents water and dust accumulation, is lighter, and reduces production and transportation costs.

[0064] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A photovoltaic module, characterized in that, include: A base plate having a first surface; A battery cell and a first transparent plate are sequentially disposed on the first surface; as well as A transparent frame surrounding the edges of the base plate, the battery cell, and the first transparent plate.

2. The photovoltaic module as described in claim 1, characterized in that, The first surface is provided with an anti-slip structure, which includes at least one of wavy grooves and patterns.

3. The photovoltaic module as described in claim 1 or 2, characterized in that, The base plate is an opaque base plate.

4. The photovoltaic module as described in claim 1 or 2, characterized in that, The base plate is a transparent base plate.

5. The photovoltaic module as described in claim 4, characterized in that, The base plate and the transparent frame are integrally formed.

6. The photovoltaic module as described in claim 1 or 2, characterized in that, The end of the transparent frame away from the base plate is aligned with the side surface of the first transparent plate away from the battery cell.

7. The photovoltaic module as described in claim 1, characterized in that, The height of the transparent border is 5 mm to 10 mm.

8. The photovoltaic module as described in claim 1, characterized in that, The height of the base plate is 2 mm to 5 mm.

9. The photovoltaic module as described in claim 1, characterized in that, The width of the transparent border is 1 mm to 5 mm.

10. The photovoltaic module as described in claim 1, characterized in that, The base plate has an opening, and the battery cell has a lead wire that passes through the opening.

11. The photovoltaic module as described in claim 1, characterized in that, An adhesive film is provided between the first transparent plate and the battery cell, and between the battery cell and the base plate.

12. A photovoltaic system, characterized in that, Including the photovoltaic module as described in any one of claims 1 to 11.

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