Photovoltaic module
By dividing the corresponding area and non-corresponding area of the cell on the glass of the photovoltaic module, and setting a cover assembly to form a cavity in the non-corresponding area, the problem of low light utilization in the photovoltaic module is solved, and the effect of increasing the power of the photovoltaic module is achieved.
Patent Information
- Application Number
- CN202421772047.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-25
AI Technical Summary
There are string gaps and sheet gaps in existing photovoltaic modules, which makes most of the light unable to be absorbed by the battery cells, the light utilization rate is low, and the filming technology has limited power increase.
By dividing the corresponding area of the cell and the non-corresponding area of the cell on the side of the glass facing the cell, and setting a cover assembly in the non-corresponding area of the cell, a cavity is formed, and the refractive index of the cavity is different from that of the glass, thereby improving the light utilization rate.
The light utilization rate of photovoltaic modules is improved, and the power of photovoltaic modules is increased.
Smart Images
Figure CN222916517U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaic, in particular to a photovoltaic module. Background Art
[0002] In the related art, light passes through the gap area between glasses and undergoes diffuse reflection between the glasses. However, there are string gaps and chip gaps in the photovoltaic module, which will cause most of the light to not be absorbed by the cells, resulting in low light utilization rate around the photovoltaic module. Moreover, the film pasting technology has a limited increase in power, which is not conducive to the light utilization rate. Summary of the Utility Model
[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a photovoltaic module, which can increase the light utilization rate and improve the power of the photovoltaic module.
[0004] The photovoltaic module according to the utility model includes: cells, glasses and a capping assembly. On one side surface of the glass facing the cells, a cell corresponding area and a cell non-corresponding area are formed. The cell corresponding area is disposed opposite to the cells in the thickness direction of the glass, and the cell non-corresponding area is located around the cell corresponding area. The capping assembly is disposed in the cell non-corresponding area and forms a cavity with the cell non-corresponding area. The refractive index of the cavity is different from that of the glass.
[0005] According to the photovoltaic module of the utility model, by dividing the cell corresponding area and the cell non-corresponding area on one side of the glass facing the cells, the cell corresponding area can be disposed opposite to the cells, and the capping assembly is disposed in the cell non-corresponding area, so that a cavity can be formed between the capping assembly and the glass. Moreover, the utilization rates of the cavity and the glass are different, so that the light utilization rate of the cell non-corresponding area can be improved, and further the power of the photovoltaic module can be increased.
[0006] In some examples of the utility model, a groove is formed in the cell non-corresponding area, and the capping assembly caps the groove to form the cavity.
[0007] In some examples of the utility model, a roller pattern is provided in the cell non-corresponding area, and the roller pattern forms the groove.
[0008] In some examples of the utility model, the cross section of the groove is triangular and the width of the groove decreases from the groove opening to the groove bottom.
[0009] In some examples of the present utility model, the cover assembly includes: a support layer and a first adhesive layer, and the first adhesive layer is bonded between the non-corresponding area of the battery cell and the support layer.
[0010] In some examples of the present utility model, metal oxide fillers are provided in the first adhesive layer; and / or the support layer is a transparent layer.
[0011] In some examples of the present utility model, the photovoltaic module further includes: a second adhesive layer, and the second adhesive layer is bonded between the battery cell and the corresponding area of the battery cell and is connected to the cover assembly.
[0012] In some examples of the present utility model, there are multiple battery cells, and connection lines are provided between adjacent battery cells. The second adhesive layer is formed with wire passing holes, and the connection lines pass through the wire passing holes; or there are multiple battery cells, the battery cells are connected with connection lines, the second adhesive layer is provided with busbars between two adjacent rows of the battery cells, the second adhesive layer forms wire passing holes on both sides of the busbars, and the connection lines connected to the two adjacent rows of the battery cells pass through the wire passing holes and are connected to the busbars.
[0013] In some examples of the present utility model, the glass includes: a front glass and a back glass, the battery cell is located between the front glass and the back glass, and the cover assemblies are provided in both the non-corresponding area of the battery cell of the front glass and the non-corresponding area of the battery cell of the back glass.
[0014] In some examples of the present utility model, the width of the cover assembly located on the back glass is greater than the width of the cover assembly located on the front glass.
[0015] Compared with the prior art, the present utility model adopts the method of setting a cavity to divide the corresponding area and the non-corresponding area of the battery cell on the side of the glass facing the battery cell, so that the corresponding area of the battery cell can be arranged opposite to the battery cell, and the cover assembly is arranged in the non-corresponding area of the battery cell, so that a cavity can be formed between the cover assembly and the glass, and the utilization rates of the cavity and the glass are different, thereby improving the light utilization rate of the non-corresponding area of the battery cell and further increasing the power of the photovoltaic module.
[0016] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:
[0018] Figure 1 is a partial cross-sectional view of the photovoltaic module at a first angle;
[0019] Figure 2 is a partial cross-sectional view of the photovoltaic module at a second angle;
[0020] Figure 3 is a partial cross-sectional view of the photovoltaic module at a third angle;
[0021] Figure 4 is a partial cross-sectional view of the photovoltaic module at a fourth angle;
[0022] Figure 5 is a schematic structural view of the photovoltaic module;
[0023] Figure 6 is a cross-sectional view of the photovoltaic module;
[0024] Figure 7 is a partial cross-sectional view of the photovoltaic module at a fifth angle.
[0025] Reference numerals:
[0026] 100, photovoltaic module;
[0027] 10, solar cell; 11, solar cell corresponding area; 12, solar cell non-corresponding area; 13, groove; 20, glass; 21, front glass; 22, back glass; 30, capping assembly; 31, support layer; 32, first adhesive layer; 40, second adhesive layer; 41, bus bar. Detailed implementation manners
[0028] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the drawings are exemplary.
[0029] Reference will be made below to Figures 1 - 7 describe the photovoltaic module 100 according to an embodiment of the present invention.
[0030] As Figures 1 - 7 shown, the photovoltaic module 100 according to the present invention includes: a solar cell 10, a glass 20, and a capping assembly 30. A solar cell corresponding area 11 and a solar cell non-corresponding area 12 are formed on a surface of the glass 20 facing the solar cell 10. The solar cell corresponding area 11 and the solar cell 10 are disposed opposite to each other in the thickness direction of the glass 20. The solar cell non-corresponding area 12 is located around the solar cell corresponding area 11. The capping assembly 30 is disposed in the solar cell non-corresponding area 12 and forms a cavity with the solar cell non-corresponding area 12. The refractive index of the cavity is different from the refractive index of the glass 20.
[0031] It can be understood that the cell 10, the glass 20 and the capping assembly 30 constitute the main body of the photovoltaic module 100. The glass 20 is divided into a light-facing surface and a backlight surface. The side of the glass 20 facing the cell 10 is the backlight surface. Moreover, the side of the glass 20 facing the cell 10 is divided into a cell corresponding area 11 and a cell non-corresponding area 12. The cell corresponding area 11 and the cell 10 are arranged at an upper and lower interval, and the cell corresponding area 11 and the cell 10 are arranged opposite to each other, so that light can be transmitted to the cell 10 through the cell corresponding area 11. The cell non-corresponding area 12 is located around the cell corresponding area 11. Such an arrangement can make the cell non-corresponding area 12 in the series gap and the chip gap of the photovoltaic module 100, so as to utilize the space of the photovoltaic module. The capping assembly 30 is located on one side of the cell non-corresponding area 12, and a cavity is formed between the capping assembly 30 and the cell non-corresponding area 12. The cavity is arranged in a dislocation in the up and down direction with the cell 10, and the refractive indices of the cavity and the glass 20 are different. In this way, a refractive index difference can be formed between the glass 20 and the cavity, and light is refracted and totally reflected in the glass 20 and the cavity, so that the cavity can change the path of the light. Not only can the light reach the cell 10 after multiple reflections, but also the utilization rate of the light can be increased, and further the power of the photovoltaic module 100 can be improved.
[0032] Thus, by dividing the cell corresponding area 11 and the cell non-corresponding area 12 on the side of the glass 20 facing the cell 10, the cell corresponding area 11 and the cell 10 can be arranged opposite to each other, and the capping assembly 30 is arranged in the cell non-corresponding area 12. In this way, a cavity can be formed between the capping assembly 30 and the glass 20, and the utilization rates of the cavity and the glass 20 are different, so as to improve the light utilization rate of the cell non-corresponding area 12, and further improve the power of the photovoltaic module 100.
[0033] Among them, as Figures 1 - 7 shown, a groove 13 is formed in the cell non-corresponding area 12, and the capping assembly 30 caps the groove 13, so as to form a cavity. That is to say, the groove 13 is arranged in the cell non-corresponding area 12, the capping assembly 30 is arranged at the groove 13, and the capping assembly 30 caps the groove 13, so that a cavity can be formed between the capping assembly 30 and the glass 20. In this way, a refractive index difference can be formed between the glass 20 and the cavity, and light is refracted and totally reflected in the glass 20 and the cavity, so that the cavity can change the path of the light. Not only can the light reach the cell 10 after multiple reflections, but also the utilization rate of the light can be increased, and further the power of the photovoltaic module 100 can be improved.
[0034] In particular, as Figures 1 - 7As shown, the non-corresponding area 12 of the cell has a roller embossing pattern, and the roller embossing pattern forms a groove 13. It can be understood that the glass 20 in the non-corresponding area 12 of the cell uses a roller support, and the roller embossing pattern has a groove 13, so that a cavity can be formed between the glass 20 and the capping assembly 30. In this way, a refractive index difference can be formed between the glass 20 and the cavity, and light refracts and undergoes total internal reflection in the glass 20 and the cavity. Thus, the cavity can change the path of the light. Not only can the light reach the cell 10 after multiple reflections, but also the utilization rate of the light can be increased, and further the power of the photovoltaic module 100 can be improved. For example, the embossing roller prefabricates the surface structure during the flow of the glass 20, and the surface of the roller has a prefabricated concave embossing pattern, which is convenient for forming a cavity between the glass 20 and the capping assembly 30. For example, the structure of the glass 20 is pressed by guide wheels and rollers.
[0035] In addition, as Figures 1 - 7 shown, the cross-section of the groove 13 is triangular and the width of the groove 13 decreases from the groove opening to the groove bottom. That is to say, the cross-section of the groove 13 is composed of multiple triangles connected in sequence. The lower end of the groove 13 is one side of the triangle, and the upper end of the groove 13 is a vertex of the triangle. In this way, the width of the groove opening of the groove 13 can be made larger than the width of the groove bottom, which is not only convenient for the capping assembly 30 to form a cavity when covering the groove opening, but also can use the angle between the sides of the triangle to increase the refractive index of the light. Thus, the light can reach the cell 10 after multiple reflections, and the utilization rate of the light can be increased, and further the power of the photovoltaic module 100 can be improved.
[0036] In addition, as Figures 1 - 7 shown, the capping assembly 30 includes: a support layer 31 and a first adhesive layer 32, and the first adhesive layer 32 is bonded between the non-corresponding area 12 of the cell and the support layer 31. It can be understood that the support layer 31 and the first adhesive layer 32 constitute the main structure of the capping assembly 30, and the first adhesive layer 32 is located between the non-corresponding area 12 of the cell and the support layer 31, so that a cavity can be formed between the first adhesive layer 32 and the glass 20, and further the first adhesive layer 32 can increase the refractive index of the light.
[0037] Optionally, as Figures 1 - 7 shown, the first adhesive layer 32 is provided with metal oxide fillers, the support layer 31 is a transparent layer, and the metal oxide fillers in the first adhesive layer 32 are high refractive index particles. Such a setting can increase the refractive index of the photovoltaic module 100, and the transparent layer is made of plastic raw materials, which is convenient for the support layer 31 to support the first adhesive layer 32.
[0038] In addition, as Figures 1 - 7As shown in the figure, the photovoltaic module 100 further includes: a second adhesive layer 40, which is bonded between the solar cell 10 and the corresponding area 11 of the solar cell and is connected to the capping assembly 30. That is to say, the second adhesive layer 40 is disposed between the solar cell 10 and the corresponding area 11 of the solar cell, so that the second adhesive layer 40 can bond the solar cell 10 and the corresponding area 11 of the solar cell, and further the solar cell 10 and the glass 20 can be connected more firmly.
[0039] In addition, as Figures 1 - 7 shown in the figure, there are multiple solar cells 10, and a connecting wire is disposed between adjacent solar cells 10. The second adhesive layer 40 is formed with a wire passing hole, and the connecting wire passes through the wire passing hole; or there are multiple solar cells 10, the solar cells 10 are connected with connecting wires, and the second adhesive layer 40 is provided with a bus bar 41 between two adjacent rows of solar cells 10. The second adhesive layer 40 forms wire passing holes on both sides of the bus bar 41, and the connecting wires connected to the two adjacent rows of solar cells 10 pass through the wire passing holes and are connected to the bus bar 41.
[0040] It can be understood that a connecting wire is disposed between two solar cells 10, and a wire passing hole is disposed in the second adhesive layer 40, and the connecting wire passes through the wire passing hole, so that adjacent solar cells 10 can be connected through the connecting wire, and further the electric energy of the photovoltaic module 100 can be integrated. Or, a bus bar 41 is disposed in the second adhesive layer 40, wire passing holes are disposed on both sides of the bus bar 41, the connecting wires between adjacent solar cells 10 pass through the wire passing holes, and the connecting wires are connected to the bus bar 41, so that adjacent solar cells 10 can be connected through the connecting wire, and further the electric energy of the photovoltaic module 100 can be integrated.
[0041] In addition to this, as Figures 1 - 7 shown in the figure, the glass 20 includes: a front glass 21 and a back glass 22. The solar cell 10 is located between the front glass 21 and the back glass 22. Capping assemblies 30 are disposed on both the non-corresponding area 12 of the front glass 21 for the solar cell and the non-corresponding area 12 of the back glass 22 for the solar cell. That is to say, the front glass 21 and the back glass 22 are disposed opposite to each other, and the front glass 21 is located above the back glass 22. Such a setting can form a gap between the front glass 21 and the back glass 22, and the solar cell 10 is located in the gap, so that light can be refracted and transmitted to the solar cell 10. The non-corresponding area 12 for the solar cell is disposed on the side of the front glass 21 facing the back glass 22, and the non-corresponding area 12 for the solar cell and the capping assembly 30 form a cavity. The non-corresponding area 12 for the solar cell is disposed on the side of the back glass 22 facing the front glass 21, and the non-corresponding area 12 for the solar cell and the capping assembly 30 form a cavity, so that light can be refracted and transmitted through the glass 20 and the cavity, and further the utilization rate of the incident light can be improved.
[0042] Particularly, as Figures 1 - 7As shown, the width of the cover assembly 30 located on the back glass 22 is greater than the width of the cover assembly 30 located on the front glass 21. Such a setting enables light to be refracted multiple times within the cover assemblies 30 facing each other vertically after passing through the front glass 21 and being transmitted to the back glass 22, so that the light can be evenly transmitted to the battery cells 10, thereby improving the utilization rate of light.
[0043] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0044] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more. In the description of the present utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. In the description of the present utility model, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.
[0045] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.
[0046] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.
Claims
1. A photovoltaic module (100), characterized in that: include: Battery cell (10); A glass (20), wherein a cell-corresponding area (11) and a cell-non-corresponding area (12) are formed on a surface of the glass (20) facing the cell (10), the cell-corresponding area (11) and the cell (10) being arranged opposite to each other in a thickness direction of the glass (20), and the cell-non-corresponding area (12) being located around the cell-corresponding area (11); A cover assembly (30), the cover assembly (30) being arranged in the non-corresponding area (12) of the battery cell and forming a cavity with the non-corresponding area (12) of the battery cell, the refractive index of the cavity being different from the refractive index of the glass (20).
2. The photovoltaic module (100) according to claim 1, characterized in that: The non-corresponding area (12) of the battery cell is formed with a groove (13), and the cover assembly (30) covers the groove (13) to form the cavity.
3. The photovoltaic module (100) according to claim 2, characterized in that: The non-corresponding area (12) of the battery sheet is provided with a pressing roller pattern, and the pressing roller pattern forms the groove (13).
4. The photovoltaic assembly (100) according to claim 2, characterized in that: The cross section of the groove (13) is triangular and the width of the groove (13) decreases from the groove opening to the groove bottom.
5. The photovoltaic module (100) according to claim 1, characterized in that: The cover assembly (30) comprises: Support layer (31); A first adhesive layer (32), the first adhesive layer (32) is bonded between the non-corresponding area (12) of the battery cell and the support layer (31).
6. The photovoltaic assembly (100) according to claim 5, characterized in that: A metal oxide filler is provided in the first bonding layer (32); and / or The supporting layer (31) is a transparent layer.
7. The photovoltaic assembly (100) according to claim 5, characterized in that: Also includes: A second adhesive layer (40), the second adhesive layer (40) is bonded between the battery cell (10) and the battery cell corresponding area (11), and is connected to the cover assembly (30).
8. The photovoltaic assembly (100) according to claim 7, characterized in that: There are a plurality of battery cells (10), connecting wires are provided between adjacent battery cells (10), the second adhesive layer (40) is formed with a wire-through hole, and the connecting wires pass through the wire-through hole; or There are a plurality of battery cells (10), each of which is connected to a connecting wire. The second adhesive layer (40) is provided with a bus bar (41) between two adjacent rows of battery cells (10). The second adhesive layer (40) forms wire holes on both sides of the bus bar (41), and the connecting wires connected to the two adjacent rows of battery cells (10) pass through the wire holes and are connected to the bus bar (41).
9. The photovoltaic module (100) according to claim 1, characterized in that: The glass (20) comprises: a front glass (21) and a back glass (22); the cell (10) is located between the front glass (21) and the back glass (22); and the cell non-corresponding area (12) of the front glass (21) and the cell non-corresponding area (12) of the back glass (22) are both provided with the cover assembly (30).
10. The photovoltaic assembly (100) according to claim 9, characterized in that: The width of the cover assembly (30) located on the rear glass (22) is greater than the width of the cover assembly (30) located on the front glass (21).