Photovoltaic module

Abstract

The utility model discloses a photovoltaic assembly. The photovoltaic assembly comprises a piece of front glass; the back plate is positioned on the back surface of the front glass; the battery string is located between the front glass and the back plate, the battery string comprises a plurality of battery pieces, and gaps are formed among the battery pieces; the adhesive films are positioned between the front glass and the battery strings and between the back plate and the battery strings; wherein at least one of the front glass and the back plate comprises a glass body and a reflection structure, the reflection structure is arranged on the back face of the glass body and corresponds to the gap, and a cavity is formed between the reflection structure and the glass body. Therefore, the assembly steps can be reduced, the use of a reflecting film and a film sticking machine is avoided, and the production cost can also be reduced. The reflection structure of the optical function cavity can better increase the reflection effect, and the light can be reflected to the battery piece through a certain path, so that the light utilization rate of the photovoltaic module is increased, and the power generation power is improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a photovoltaic module. Background Technology

[0002] In existing technologies, reflective films are set at the gaps between the corresponding solar cells on the front or back glass of photovoltaic modules to improve the absorption and utilization of light. However, applying various types of gap reflective films to the front or back glass requires the introduction of new film-applying equipment, which not only increases the corresponding cost but also requires multiple processes, resulting in low manufacturing efficiency of photovoltaic modules. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a photovoltaic module in which the front glass mainly consists of a glass body and a reflective structure. This reduces assembly steps and simplifies the process, eliminating the need for reflective films and laminating machines, thereby improving the production efficiency of the photovoltaic module and reducing production costs. Furthermore, the reflective structure of the optical functional cavity can better enhance the reflection effect, allowing light to be reflected onto the solar cells through a specific path, thus increasing the photovoltaic module's light utilization rate and improving power generation.

[0004] A photovoltaic module according to an embodiment of the present invention includes: a front glass; a back sheet located on the back side of the front glass; a battery string located between the front glass and the back sheet, the battery string including a plurality of battery cells with gaps formed between the plurality of battery cells; and an encapsulating film located between the front glass and the battery string, and between the back sheet and the battery string; wherein at least one of the front glass and the back sheet includes: a glass body and a reflective structure, the reflective structure being disposed on the back side of the glass body and corresponding to the gaps, and a cavity being formed between the reflective structure and the glass body.

[0005] Therefore, the front glass of this photovoltaic module mainly consists of the glass body and a reflective structure. This reduces assembly steps and simplifies the process, eliminating the need for reflective films and laminating machines, thereby improving the production efficiency of the photovoltaic module and reducing production costs. Furthermore, the reflective structure of the optical functional cavity enhances the reflection effect, allowing light to be reflected onto the solar cells through a specific path, thus increasing the photovoltaic module's light utilization rate and improving power generation.

[0006] According to some embodiments of the present invention, the reflective structure includes: a plurality of reflective units, the plurality of reflective units being arranged in rows and columns, and a cavity being formed between adjacent plurality of reflective units and the glass body.

[0007] According to some embodiments of this utility model, the cross-section of the reflective unit is triangular, trapezoidal, or arc-shaped.

[0008] According to some embodiments of the present invention, the front glass further includes an adhesive, which is bonded between the back of the glass body and the reflective structure.

[0009] According to some embodiments of the present invention, the gap includes a first gap extending along a first direction and a second gap extending along a second direction, the first gap and the second gap being perpendicular to each other and connected; the reflective structure corresponds to the first gap and the second gap respectively.

[0010] According to some embodiments of the present invention, the reflective structure includes: a first reflective structure and a second reflective structure, wherein the first reflective structure corresponds to the first gap, the second reflective structure corresponds to the second gap, and the first reflective structure and the second reflective structure are stacked at the connection between the corresponding first gap and the second gap.

[0011] According to some embodiments of the present invention, the reflective structure includes: a first reflective structure and a second reflective structure, wherein the first reflective structure corresponds to the first gap, the second reflective structure corresponds to the second gap, the first reflective structure also corresponds to the connection between the first gap and the second gap, and adjacent second reflective structures are connected to opposite sides of the first reflective structure.

[0012] According to some embodiments of this utility model, the reflective structure is one of a UV adhesive structure and a resin structure.

[0013] According to some embodiments of the present invention, the reflective structure includes: a reflective layer; and a UV-resistant coating, wherein the UV-resistant coating is disposed on the surface of the reflective layer.

[0014] According to some embodiments of the present invention, the reflective layer is one of a UV adhesive structure and a resin structure.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of a photovoltaic module according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the reflective structure according to an embodiment of the present utility model.

[0019] Figure label:

[0020] 100. Photovoltaic modules;

[0021] 10. Front glass; 11. Glass body; 12. Reflective structure; 121. Reflective unit; 122. First reflective structure; 123. Second reflective structure;

[0022] 13. Cavity; 20. Backplate;

[0023] 30. Battery string; 31. Battery cell; 311. First gap; 312. Second gap;

[0024] 40. Adhesive film; 50. Adhesive. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0026] The following is for reference. Figures 1-2 The image shows a photovoltaic module 100 according to an embodiment of the present invention.

[0027] Reference Figure 1 and Figure 2 As shown, the photovoltaic module 100 of this utility model embodiment includes: a front glass 10, a back sheet 20, a battery string 30, and an encapsulating film 40. The back sheet 20 is located on the back side of the front glass 10, the battery string 30 is located between the front glass 10 and the back sheet 20, the battery string 30 includes a plurality of battery cells 31, and gaps are formed between the plurality of battery cells 31. The encapsulating film 40 is located between the front glass 10 and the battery string 30, and between the back sheet 20 and the battery string 30. At least one of the front glass 10 and the back sheet 20 includes: a glass body 11 and a reflective structure 12. The reflective structure 12 is disposed on the back side of the glass body 11, and the reflective structure 12 corresponds to the gap. A cavity 13 is formed between the reflective structure 12 and the glass body 11.

[0028] Specifically, traditional photovoltaic modules have reflective films placed at the gaps between the corresponding solar cells on the front or back glass to improve light absorption and utilization. However, applying various types of gap reflective films to the front or back glass requires the introduction of new film-applying equipment, which not only increases the corresponding cost but also requires multiple processes, resulting in low manufacturing efficiency of photovoltaic modules.

[0029] Therefore, the photovoltaic module 100 needs to be optimized. In this photovoltaic module 100, the backsheet 20 is located behind the front glass 10, and the backsheet 20 can be made of glass. The cell string 30 is located between the front glass 10 and the backsheet 20. The side of the cell string 30 facing the front glass 10 is connected to the front glass 10 more stably and firmly through the encapsulating film 40, and the side of the cell string 30 facing the backsheet 20 is also connected to the backsheet 20 more stably and firmly through the encapsulating film 40. The cell string 30 is mainly composed of multiple solar cells 31, thereby improving the power generation efficiency of the photovoltaic module 100.

[0030] Furthermore, the front glass 10 is integrally molded from the glass body 11 and the reflective structure 12, which optimizes the reflection effect and improves light utilization. Moreover, this integral design reduces assembly steps and simplifies the process, eliminating the need for gaps in the reflective film and laminating machines, thereby improving the production efficiency of the photovoltaic module 100 and reducing production costs. Additionally, at least one of the front glass 10 and the back panel 20 includes the glass body 11 and the reflective structure 12; that is, the back panel 20 can also be a back glass. Both the front glass 10 and the back glass can be integrally molded from the glass body 11 and the reflective structure 12, further reducing assembly steps.

[0031] Specifically, the reflective structure 12 is disposed on the back of the glass body 11, which can reflect light and thus improve the light utilization rate. Moreover, the reflective structure 12 is disposed corresponding to the gaps of the multiple solar cells 31. In this way, the reflective structure 12 can not only avoid blocking the light of the solar cells 31, but also increase the light-receiving area of ​​the solar cells 31. It can also utilize the light from the gaps between the multiple solar cells 31. The reflective structure 12 at the gaps can reflect the light from the gaps onto the solar cells 31, thereby further improving the light utilization rate of the solar cells 31 and improving the power generation efficiency of the photovoltaic module 100.

[0032] Furthermore, a cavity 13 is formed between the reflective structure 12 and the glass body 11. This optically functional cavity 13 enhances the reflective effect of the reflective structure 12, allowing light to be reflected onto the solar cell 31 through a specific path, thereby improving the light absorption of the photovoltaic module 100. Specifically, when light shines on the reflective structure 12 with the cavity 13, the light is reflected onto the surface of the front glass 10 through a specific path, and then the light reflected onto the surface of the front glass 10 is reflected onto the solar cell 31 through a specific path, thereby increasing the light utilization rate of the solar cell 31 and improving the power generation capacity.

[0033] Therefore, the front glass 10 of the photovoltaic module 100 mainly consists of a glass body 11 and a reflective structure 12. This reduces assembly steps and simplifies the process, eliminating the need for reflective films and laminating machines, thereby improving the production efficiency of the photovoltaic module 100 and reducing production costs. Furthermore, the reflective structure 12 of the optical functional cavity 13 further enhances the reflection effect, allowing light to be reflected onto the solar cells 31 through a specific path, thus increasing the photovoltaic module's light utilization rate and improving power generation.

[0034] According to some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the reflective structure 12 includes: multiple reflective units 121, which can be arranged in rows and columns, and a cavity 13 is formed between adjacent multiple reflective units 121 and the glass body 11.

[0035] The multiple reflective units 121 are arranged in rows and columns. For example, the multiple reflective units 121 can be arranged in five rows and five columns, so that the battery string 30 can receive the light reflected by the multiple reflective units 121 more evenly.

[0036] Furthermore, cavities 13 are provided between each pair of adjacent reflective units 121 and the glass body 11, so that the battery string 30 can receive light evenly, thereby making the power generation efficiency of the photovoltaic module 100 more stable.

[0037] According to some embodiments of this utility model, such as Figure 2 As shown, the cross-section of the reflective unit 121 is triangular, trapezoidal, or arc-shaped.

[0038] The cross-section of the reflective unit 121 can be set as a triangle. This not only improves the strength and stability of the reflective unit 121, but also allows the light from the gap to be reflected multiple times onto the solar cell 31, thus achieving the effect of focusing light.

[0039] The cross-section of the reflecting unit 121 can also be set as trapezoidal. The trapezoidal cross-section can increase the contact area between the light and the reflecting unit 121, thereby improving the light reflection efficiency.

[0040] Furthermore, the reflective unit 121 can also be configured as an arc shape, which can make the light propagation smoother and reduce light loss.

[0041] According to some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the front glass 10 also includes an adhesive 50, which is bonded between the back of the glass body 11 and the reflective structure 12.

[0042] The adhesive 50 is applied to the glass body 11, and the reflective structure 12 is applied to the adhesive 50. This makes the connection between the reflective structure 12 and the glass body 11 more stable and firm, and also makes the reflective structure 12 and the glass body 11 a whole.

[0043] According to some embodiments of the present invention, the gap includes a first gap 311 extending along a first direction and a second gap 312 extending along a second direction. The first gap 311 and the second gap 312 are perpendicular to each other and connected. The reflective structure 12 corresponds to the first gap 311 and the second gap 312 respectively.

[0044] In this arrangement, multiple battery strings 30 are arranged in rows and columns. The first direction can be the length direction of the photovoltaic module 100, and the corresponding second direction is the width direction of the photovoltaic module 100. The first direction and the second direction are perpendicular. For example, the battery strings 30 extend along the first direction, and multiple battery strings 30 are arranged along the second direction. In this way, the first gap 311 and the second gap 312 between multiple battery cells 31 are perpendicular to each other and connected to form an intersecting cross-shaped gap.

[0045] Furthermore, the reflective structure 12 corresponds to the first gap 311 and the second gap 312 respectively, which can better reflect the light from the first gap 311 and the second gap 312 to the solar cell 31, thereby further improving the power generation efficiency of the photovoltaic module 100.

[0046] According to some embodiments of the present invention, the reflective structure 12 includes: a first reflective structure 122 and a second reflective structure 123. The first reflective structure 122 corresponds to the first gap 311, and the second reflective structure 123 corresponds to the second gap 312. The first reflective structure 122 and the second reflective structure 123 are stacked at the connection between the corresponding first gap 311 and the second gap 312.

[0047] The first reflective structure 122 and the second reflective structure 123 are stacked at the connection points of the first gap 311 and the second gap 312. In this way, the first reflective structure 122 and the second reflective structure 123 can reflect the light from the first gap 311 and the second gap 312, make full use of the light from the gaps between the battery strings 30, and increase the contact area between the reflective structure 12 and the light at the gaps.

[0048] According to another embodiment of the present invention, the reflective structure 12 includes: a first reflective structure 122 and a second reflective structure 123. The first reflective structure 122 corresponds to the first gap 311, and the second reflective structure 123 corresponds to the second gap 312. The first reflective structure 122 also corresponds to the connection between the first gap 311 and the second gap 312. Adjacent second reflective structures 123 are connected to opposite sides of the first reflective structure 122.

[0049] The first reflective structure 122 also corresponds to the connection between the first gap 311 and the second gap 312. In this way, the first reflective structure 122 can reflect the light at the connection between the first gap 311 and the second gap 312. The adjacent second reflective structure 123 is connected to the opposite sides of the first reflective structure 122, so that it can further reflect the light from the gap of the battery string 30.

[0050] According to some embodiments of the present invention, the reflective structure 12 is one of a UV adhesive structure and a resin structure.

[0051] Among them, the reflective structure 12 is set as a UV glue structure or a resin structure. The UV glue structure or resin structure is a transparent structural component, which not only facilitates the illumination of light, but also reflects light due to the different refractive index, thereby increasing the contact area of ​​the battery string 30 with light.

[0052] According to some embodiments of the present invention, the reflective structure 12 includes a reflective layer and a UV-resistant coating, wherein the UV-resistant coating is disposed on the surface of the reflective layer.

[0053] Among them, the UV-resistant coating can effectively prevent ultraviolet rays from damaging the reflective layer, thereby extending its service life and maintaining high efficiency.

[0054] According to some embodiments of this utility model, the reflective layer is either a UV adhesive structure or a resin structure. This not only facilitates the entry of light but also reflects it, thereby improving the light utilization rate of the battery string 30.

[0055] In the description of the present invention, it should 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" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation to the present invention.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0057] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A photovoltaic module, characterized in that, include: Front glass; A back panel, located behind the front glass; A battery string, located between the front glass and the back panel, the battery string comprising multiple battery cells with gaps formed between the multiple battery cells; An adhesive film is located between the front glass and the battery string, and between the back plate and the battery string; Wherein, at least one of the front glass and the back panel includes: a glass body and a reflective structure, the reflective structure being disposed on the back side of the glass body and corresponding to the gap, and a cavity being formed between the reflective structure and the glass body; The reflective structure includes: Multiple reflective units are arranged in rows and columns, and cavities are formed between adjacent reflective units and the glass body.

2. The photovoltaic module according to claim 1, characterized in that, The cross-section of the reflective unit is triangular, trapezoidal, or arc-shaped.

3. The photovoltaic module according to claim 1, characterized in that, The front glass also includes: An adhesive is used to bond the back of the glass body to the reflective structure.

4. The photovoltaic module according to claim 1, characterized in that, The gap includes a first gap extending along a first direction and a second gap extending along a second direction, wherein the first gap and the second gap are perpendicular to each other and are connected. The reflective structures correspond to the first gap and the second gap, respectively.

5. The photovoltaic module according to claim 4, characterized in that, The reflective structure includes: A first reflective structure and a second reflective structure are provided, wherein the first reflective structure corresponds to the first gap and the second reflective structure corresponds to the second gap, and the first reflective structure and the second reflective structure are stacked at the connection point of the corresponding first gap and second gap.

6. The photovoltaic module according to claim 4, characterized in that, The reflective structure includes: A first reflective structure and a second reflective structure, wherein the first reflective structure corresponds to the first gap, and the second reflective structure corresponds to the second gap, and the first reflective structure also corresponds to the connection between the first gap and the second gap, and adjacent second reflective structures are connected to opposite sides of the first reflective structure.

7. The photovoltaic module according to claim 1, characterized in that, The reflective structure is either a UV adhesive structure or a resin structure.

8. The photovoltaic module according to claim 1, characterized in that, The reflective structure includes: Reflective layer; A UV-resistant coating is disposed on the surface of the reflective layer.

9. The photovoltaic module according to claim 8, characterized in that, The reflective layer is either a UV adhesive structure or a resin structure.

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