Solar module

Abstract

The utility model relates to a solar energy assembly, comprising a photovoltaic assembly capable of absorbing medium wave light; the cover plate can absorb long-wave light rays or short-wave light rays, or can convert the long-wave light rays and / or the short-wave light rays into medium-wave light rays, and the cover plate is of a light-transmitting structure and is stacked on the light incident surface of the photovoltaic module; the photovoltaic module and the cover plate are clamped and fixed through the plurality of buckle structures which are arranged at intervals in the circumferential direction; the first plate body and the second plate body are arranged in parallel at an interval, the middle plate body is connected between the first plate body and the second plate body, the first plate body and the second plate body can abut against the back-to-back surfaces of the cover plate and the photovoltaic module respectively, and the middle plate body can abut against the side face of the photovoltaic module. The solar cell can absorb light with a wider wavelength range, and the power generation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of solar power generation, and in particular to a solar energy module. Background Technology

[0002] Traditional photovoltaic modules absorb most of the light in the 500nm-1100nm (medium wave) band, and do not absorb short-wave (380nm-500nm) and long-wave (greater than 1100nm) light sufficiently; the power generation efficiency of photovoltaic modules is low; and the efficiency (power generation efficiency per unit area) of photovoltaic modules that have already been installed (such as photovoltaic power plants, building photovoltaics, etc.) can no longer be improved. Utility Model Content

[0003] The purpose of this invention is to provide a solar energy module that can absorb a wider range of wavelengths of light, thereby improving power generation efficiency.

[0004] Another objective of this invention is to provide a solar module that facilitates the assembly of the cover plate and the photovoltaic module.

[0005] The purpose of this utility model is achieved as follows: a solar module includes: a photovoltaic module capable of absorbing medium-wave light; a cover plate capable of absorbing long-wave or short-wave light, or capable of converting long-wave and / or short-wave light into medium-wave light, the cover plate being a light-transmitting structure and stacked on the light-incident surface of the photovoltaic module; multiple snap-fit ​​structures, the photovoltaic module and the cover plate being snapped and fixed by multiple snap-fit ​​structures arranged circumferentially; the snap-fit ​​structure includes a first plate and a second plate arranged in parallel and spaced apart, and an intermediate plate connecting the first plate and the second plate, the first plate and the second plate being able to abut against the surfaces of the cover plate and the photovoltaic module facing away from each other, and the intermediate plate being able to abut against the side of the photovoltaic module.

[0006] In a preferred embodiment of the present invention, the photovoltaic module includes an annular frame and a photovoltaic panel. An annular groove is formed inside the annular frame. The outer periphery of the photovoltaic panel is embedded and snapped into the annular groove. A cover plate is stacked on the light-incident surface of the photovoltaic panel, and a gap is left between the outer periphery edge of the cover plate and the inner edge of the annular frame. The second plate and the middle plate can respectively abut against the surface of the annular frame opposite to the cover plate and the side of the annular frame.

[0007] In a preferred embodiment of the present invention, a limiting plate is further provided on the intermediate plate to limit the side of the cover plate.

[0008] In a preferred embodiment of the present invention, an elastic block is further sandwiched between the light-incident surfaces of the first plate and the cover plate.

[0009] In a preferred embodiment of the present invention, an inclined surface is formed on the inner surface of the first plate, and an inclined surface that cooperates with the inclined surface is formed on the elastic block.

[0010] In a preferred embodiment of this utility model, multiple protruding ridges are provided on the inclined surface.

[0011] In a preferred embodiment of this utility model, a transparent elastic gasket is also sandwiched between the photovoltaic panel and the cover plate.

[0012] In a preferred embodiment of this utility model, the cover plate is a photovoltaic panel structure capable of absorbing long-wavelength or short-wavelength light. A lower photovoltaic junction box is provided on the back surface of the photovoltaic module. The lower photovoltaic junction box has a lower positive electrode wire and a lower negative electrode wire, which can be electrically connected to the positive electrode guide strip and the negative electrode guide strip of the photovoltaic module, respectively. An upper photovoltaic junction box is provided on the side of the cover plate. The upper photovoltaic junction box has an upper positive electrode wire and an upper negative electrode wire, which can be electrically connected to the positive electrode guide strip and the negative electrode guide strip of the cover plate, respectively. The lower positive electrode wire, the lower negative electrode wire, the upper positive electrode wire, and the upper negative electrode wire are connected to a busbar positive electrode wire and a busbar negative electrode wire through a busbar.

[0013] In a preferred embodiment of this utility model, the cover plate is a photovoltaic panel structure capable of absorbing long-wavelength or short-wavelength light. A lower photovoltaic junction box is provided on the back surface of the photovoltaic module. The lower photovoltaic junction box has a lower positive electrode wire and a lower negative electrode wire, which can be electrically connected to the positive electrode current guide strip and the negative electrode current guide strip of the photovoltaic module, respectively. The positive electrode current guide strip and the negative electrode current guide strip of the cover plate extend out of the side of the cover plate. The positive electrode current guide strip of the cover plate is connected to the lower positive electrode wire through a positive electrode connecting wire, and the negative electrode current guide strip of the cover plate is connected to the lower negative electrode wire through a negative electrode connecting wire.

[0014] In a preferred embodiment of this utility model, both the positive and negative connecting wires include a wire core and an insulating sleeve wrapped around the wire core. The first end of the insulating sleeve is provided with an insulating block having a groove. The positive or negative current-conducting strip of the cover plate can be accommodated in the groove. The first end of the wire core can extend into the groove and connect with the positive or negative current-conducting strip of the cover plate. The second end of the wire core can extend out of the second end of the insulating sleeve and connect with the lower positive or lower negative wire in the lower photovoltaic junction box.

[0015] In a preferred embodiment of this utility model, the lower photovoltaic junction box further includes a lower junction box body, with one end of the lower positive electrode wire and one end of the lower negative electrode wire extending into the lower junction box body; two through holes are provided on the lower junction box body, and one end of the positive electrode connecting wire and one end of the negative electrode connecting wire can respectively extend into the lower junction box body through the two through holes; an insulating sealant layer is provided between the positive electrode connecting wire and the negative electrode connecting wire and the two through holes, in the groove, and between the insulating block and the side of the cover plate.

[0016] In a preferred embodiment of the present invention, the cover plate includes a substrate layer, a photovoltaic cell layer, a film layer and a back sheet layer stacked in sequence. The photovoltaic cell layer includes a transparent conductive layer, a buffer layer, a light absorption layer and a back electrode layer stacked in sequence. The back electrode layer is arranged close to the substrate layer and is a light-transmitting layer. The substrate layer is stacked on the light-incident surface of the photovoltaic module.

[0017] In a preferred embodiment of the present invention, the cover plate includes a glass plate and a first coating disposed on the surface of the glass plate that can convert long-wave light into medium-wave light and / or a second coating that can convert short-wave light into medium-wave light.

[0018] In a preferred embodiment of this invention, the cover plate is a glass plate capable of converting long-wavelength and / or short-wavelength light into medium-wavelength light.

[0019] As described above, this invention, by stacking a light-transmitting cover plate on a photovoltaic module, utilizes the cover plate's ability to absorb long-wavelength or short-wavelength light, or to convert long-wavelength and / or short-wavelength light into medium-wavelength light. This allows the solar module, formed by stacking the photovoltaic module and cover plate, to absorb a wider range of wavelengths of light compared to a single photovoltaic module, thus improving power generation efficiency. Simultaneously, the cover plate and photovoltaic module are secured together via multiple snap-fit ​​structures, ensuring convenient and stable assembly. This invention can be applied to the modification of traditional photovoltaic modules. By adding a cover plate to a traditional photovoltaic module and connecting it using multiple snap-fit ​​structures, the range of wavelengths of light that can be absorbed can be broadened, increasing the power generation efficiency per unit area. Attached Figure Description

[0020] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0021] Figure 1 A perspective view of the solar module provided by this utility model with the light-incident surface facing upward when the cover plate adopts the first wiring method.

[0022] Figure 2 for Figure 1 Top view.

[0023] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0024] Figure 4 A perspective view of the solar module provided by this utility model with the backlight side facing upward when the cover plate adopts the first wiring method.

[0025] Figure 5 for Figure 1 Side view.

[0026] Figure 6 for Figure 5 A magnified view of a portion of the image.

[0027] Figure 7 A perspective view of the buckle structure provided by this utility model.

[0028] Figure 8 The solar module provided by this utility model has its light-incident surface facing upwards when the cover plate adopts the second wiring method.

[0029] Figure 9 for Figure 8 Top view.

[0030] Figure 10 A perspective view of the solar module provided by this utility model with the backlight side facing upward when the cover plate adopts the second wiring method.

[0031] Figure 11 for Figure 10 A magnified view of a portion of the image.

[0032] Figure 12 for Figure 10 Internal structure diagram of the lower photovoltaic junction box.

[0033] Figure 13 This is a schematic diagram of the cover plate when the second wiring method is used.

[0034] Figure 14 for Figure 13 A magnified view of a portion of the image.

[0035] Figure 15 This is a schematic diagram of the first type of cover plate.

[0036] Figure 16 This is a schematic diagram of the second type of cover plate.

[0037] Explanation of icon numbers:

[0038] 1. Photovoltaic module; 11. Ring frame; 111. Top panel; 112. Bottom panel; 113. Side panel; 12. Photovoltaic panel;

[0039] 2. Cover plate; 21. Positive electrode guide strip; 22. Negative electrode guide strip; 23. Positive electrode connecting wire; 24. Negative electrode connecting wire; 25. Wire core; 26. Insulating sleeve; 27. Insulating block; 270. Groove; 271. Base plate; 272. Side plate; 273. End plate; 28. Photovoltaic panel structure; 281. Substrate layer; 282. Photovoltaic cell layer; 2821. Transparent conductive layer; 2822. Buffer layer; 2823. Light absorption layer; 2824. Back electrode layer; 283. Film layer; 284. Front panel layer; 291. Glass plate; 292. First coating; 293. Second coating;

[0040] 3. Snap-fit ​​structure; 31. First plate; 311. Inclined surface; 312. Protruding ridge; 32. Second plate; 33. Intermediate plate; 34. Limiting plate; 35. Elastic block;

[0041] 4. Transparent elastic gasket;

[0042] 5. Lower photovoltaic junction box; 51. Lower junction box body; 52. Lower positive conductor; 53. Lower negative conductor;

[0043] 6. Install the photovoltaic junction box; 61. Install the junction box body; 62. Install the positive conductor; 63. Install the negative conductor;

[0044] 7. Busbar; 71. Positive busbar lead; 72. Negative busbar lead;

[0045] 81. Positive terminal; 82. Negative terminal. Detailed Implementation

[0046] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0047] Implementation Method 1

[0048] like Figures 1 to 16 As shown, this application provides a solar module, including:

[0049] Photovoltaic module 1 capable of absorbing mid-wavelength light;

[0050] A cover plate 2 that can absorb long-wave or short-wave light, or convert long-wave and / or short-wave light into medium-wave light, the cover plate 2 being a light-transmitting structure and stacked on the light-incident surface of the photovoltaic module 1;

[0051] Multiple snap-fit ​​structures 3 are used to snap and fix the photovoltaic module 1 and the cover plate 2 together. The snap-fit ​​structure 3 includes a first plate 31 and a second plate 32 arranged in parallel and spaced apart, and an intermediate plate 33 connecting the first plate 31 and the second plate 32. The first plate 31 and the second plate 32 can abut against the surfaces of the cover plate 2 and the photovoltaic module 1 that are facing away from each other, respectively, and the intermediate plate 33 can abut against the side of the photovoltaic module 1.

[0052] Therefore, this application, by stacking a light-transmitting cover plate 2 on a photovoltaic module 1, utilizes the fact that the cover plate 2 can absorb long-wavelength or short-wavelength light, or convert long-wavelength and / or short-wavelength light into medium-wavelength light. This allows the solar module formed by stacking the photovoltaic module 1 and the cover plate 2 to absorb a wider range of wavelengths of light compared to a single photovoltaic module 1, thus improving power generation efficiency. Simultaneously, the cover plate 2 and the photovoltaic module 1 are fixed together by multiple snap-fit ​​structures 3, making assembly convenient and stable. This application can be applied to the modification of traditional photovoltaic modules. By adding a cover plate 2 to a traditional photovoltaic module and connecting it using multiple snap-fit ​​structures 3, the wavelength range of light that can be absorbed can be broadened based on the traditional photovoltaic module, thereby improving the power generation efficiency per unit area.

[0053] In a specific implementation, the photovoltaic module 1 mentioned above can be a traditional photovoltaic module, which includes an annular frame 11 and a photovoltaic panel 12. An annular slot is formed inside the annular frame 11, and the outer periphery of the photovoltaic panel 12 is embedded and snapped into the annular slot.

[0054] Considering that, on the one hand, since the annular frame 11 of the photovoltaic module 1 is made of metal (such as aluminum alloy), it may be deformed during processing, resulting in an uneven surface. If the backlight surface of the cover plate 2 is directly pressed against the surface of the annular frame 11, it is very likely that the deformation of the annular frame 11 will cause some of the snap-fit ​​structures 3 to fail to snap into place in sequence. On the other hand, the backlight surface of the cover plate 2 is made of glass and cannot directly contact the metal annular frame 11, otherwise the cover plate 2 will be easily damaged.

[0055] Therefore, in some embodiments, reference is made to Figures 1 to 3 as well as Figures 8 to 10 The cover plate 2 is stacked on the light-incident surface of the photovoltaic panel 12, with a gap d between the outer periphery of the cover plate 2 and the inner edge of the annular frame 11. The second plate 32 and the middle plate 33 can respectively abut against the surface of the annular frame 11 facing away from the cover plate 2 and the side of the annular frame 11, so as to facilitate the smooth engagement of each snap-fit ​​structure 3 and avoid damage to the cover plate 2 by the annular frame 11. This gap d can be, for example, 2-5mm, depending on the actual design.

[0056] The aforementioned annular frame 11 is specifically formed by a top plate 111, a bottom plate 112, and a side plate 113 located between the top plate 111 and the bottom plate 112. The top plate 111, bottom plate 112, and side plate 113 are all annular structures, forming an annular groove with an opening facing inwards from the annular frame 11. The second plate 32 specifically abuts against the outer surface of the bottom plate 112. The shape of the photovoltaic module 1 is determined according to needs, and the shape of the cover plate 2 generally matches the shape of the photovoltaic module 1. The surface area of ​​the cover plate 2 is smaller than the area enclosed by the inner ring of the annular frame 11. For example, in a specific case, the photovoltaic module 1 is a rectangular plate, and correspondingly, the annular frame 11 is a rectangular frame, the photovoltaic panel 12 is a rectangular plate, and the cover plate 2 is a rectangular plate; the annular slot is specifically opened in the inner surface of the annular frame 11, and the entire annular frame 11 surrounds the outer circumference of the photovoltaic panel 12; the surface area of ​​the cover plate 2 is smaller than the area of ​​the rectangular region enclosed by the inner circle of the annular frame 11, and a gap d is left between the four sides of the cover plate 2 and the four inner sides of the inner circle of the annular frame 11.

[0057] In order to further limit the position of the cover plate 2 and restrict the gap d, a limiting plate 34 that can limit the side of the cover plate 2 is also provided on the intermediate plate 33.

[0058] Reference Figure 6 and Figure 7 The first plate 31 and the second plate 32 are symmetrically and vertically connected to both ends of the middle plate 33 and located on the same side of the middle plate 33. The three form a U-shaped structure. The limiting plate 34 is parallel to the first plate 31 and located between the first plate 31 and the second plate 32. The width of the limiting plate 34 in the direction perpendicular to the surface of the middle plate 33 is smaller than the width of the first plate 31. When the snap-fit ​​structure 3 is snapped onto the cover plate 2 and the photovoltaic module 1, the limiting plate 34 can abut against the side of the cover plate 2 or leave a small gap with the side of the cover plate 2 to limit the position of the cover plate 2 and ensure the stability of the structure.

[0059] Furthermore, an elastic block 35 is also sandwiched between the first plate 31 and the light-incident surface of the cover plate 2. This elastic block 35 can be, for example, a rubber block, to reduce damage to the cover plate 2 caused by the snap-fit ​​structure 3 and to facilitate a more secure snap-fit.

[0060] To facilitate installation, an inclined surface 311 is formed on the inner surface of the first plate 31, and an inclined surface that mates with the inclined surface 311 is formed on the elastic block 35. (Refer to...) Figure 6 and Figure 7The rubber block has a flat surface facing the cover plate 2 and a sloped surface facing away from the cover plate 2. The sloped surface is inclined in a direction perpendicular to the cover plate 2, gradually increasing in thickness from the bottom of the annular groove towards the opening. The sloped surface 311 on the first plate 31 matches the sloped surface. During installation, after the snap-fit ​​structure 3 is fastened to the cover plate 2 and the photovoltaic module 1, the rubber block is inserted between the first plate 31 and the cover plate 2. The matching of the sloped surface and the sloped surface 311 makes installation more convenient.

[0061] Optionally, multiple protruding ridges 312 are provided on the inclined surface 311. These protruding ridges 312 can be, for example, […]. Figure 7 The elongated protrusions shown in the figure, and the multiple protruding ridges 312 are provided parallel to each other on the inclined surface 311 along the extension direction of the corresponding side of the cover plate 2, which can increase the friction with the elastic block 35 and prevent slippage and falling off.

[0062] In a preferred embodiment, refer to Figure 5 and Figure 6 A transparent elastic gasket 4 is also sandwiched between the photovoltaic panel 12 and the cover plate 2. The shape and size of the transparent elastic gasket 4 are generally the same as those of the cover plate 2, and the gasket can be made of rubber.

[0063] Because the surfaces of the cover plate 2 and the photovoltaic panel 12 may not be perfectly flat during manufacturing, gaps may exist between them when the cover plate 2 is directly attached to the photovoltaic panel 12. When light passes through the air in these gaps and then enters the photovoltaic panel 12, it will cause significant light loss and affect power generation efficiency. By setting the aforementioned transparent elastic gasket 4, these gaps can be effectively eliminated, reducing light loss.

[0064] In this application, the cover plate 2 can take the following three forms:

[0065] The first form of the cover plate 2: The cover plate 2 is a photovoltaic panel structure 28 capable of absorbing either long-wave or short-wave light. When the cover plate 2 is a photovoltaic panel structure 28 capable of absorbing long-wave light, after the cover plate 2 is stacked on the photovoltaic module 1 capable of absorbing medium-wave light, the resulting solar module can absorb both medium-wave and long-wave light; when the cover plate 2 is a photovoltaic panel structure 28 capable of absorbing short-wave light, after the cover plate 2 is stacked on the photovoltaic module 1 capable of absorbing medium-wave light, the resulting solar module can absorb both medium-wave and short-wave light. Specifically, the photovoltaic panel structure 28 capable of absorbing long-wave light and the photovoltaic panel structure 28 capable of absorbing short-wave light can be any existing photovoltaic panel capable of achieving this function.

[0066] In the first form of cover plate 2, the wiring of cover plate 2 also needs to be considered. For example, the following two wiring methods can be used:

[0067] First wiring method: Refer to Figures 1 to 4A lower photovoltaic junction box 5 is provided on the back surface of the photovoltaic module 1. The lower photovoltaic junction box 5 has a lower positive electrode wire 52 and a lower negative electrode wire 53, which can be electrically connected to the positive electrode guide strip and the negative electrode guide strip of the photovoltaic module 1, respectively. An upper photovoltaic junction box 6 is provided on the side of the cover plate 2. The upper photovoltaic junction box 6 has an upper positive electrode wire 62 and an upper negative electrode wire 63, which can be electrically connected to the positive electrode guide strip and the negative electrode guide strip of the cover plate 2, respectively. The lower positive electrode wire 52, the lower negative electrode wire 53, the upper positive electrode wire 62 and the upper negative electrode wire 63 are connected to a busbar positive electrode wire 71 and a busbar negative electrode wire 72 through a busbar 7.

[0068] Specifically, the lower photovoltaic junction box 5 includes a lower junction box body 51, a lower positive conductor 52, and a lower negative conductor 53. The first ends of the lower positive conductor 52 and the lower negative conductor 53 extend into the lower junction box body 51. The lower junction box body 51 can be bonded to the back surface of the photovoltaic panel 12 of the photovoltaic module 1. The photovoltaic panel 12 of the photovoltaic module 1 has multiple cells and two current-conducting strips, one positive and one negative, which are connected (e.g., welded) to the first ends of the lower positive conductor 52 and the lower negative conductor 53, respectively, within the lower junction box body 51. The photovoltaic module 1 itself has an existing structure, and any existing photovoltaic module 1 capable of absorbing medium waves can be used. This application does not improve the structure of the photovoltaic module 1 itself. The lower photovoltaic junction box 5 is also a common photovoltaic junction box in the photovoltaic field, used to conduct the current generated by the photovoltaic module 1, and is also an existing structure.

[0069] The structure of the upper photovoltaic junction box 6 is similar to that of the lower photovoltaic junction box 5, including an upper junction box body 61. The first end of the upper positive conductor 62 and the first end of the upper negative conductor 63 extend into the upper junction box body 61 and are electrically connected to the positive and negative current-carrying strips of the cover plate 2, respectively, inside the upper junction box body 61. During installation, the outer wall of the upper junction box body 61 of the upper photovoltaic junction box 6 is bonded to the side of the cover plate 2, and can also be bonded to the surface of the annular frame 11 facing the cover plate 2 (i.e., the outer surface of the aforementioned top plate 111). The lower positive conductor 52 and the upper positive conductor 62 are combined into a single positive conductor 71 using a busbar 7, and the lower negative conductor 53 and the upper negative conductor 63 are combined into a single negative conductor 72. The ends of the positive conductor 71 and the negative conductor 72 away from the busbar 7 can respectively form a positive terminal 81 and a negative terminal 82, which can be directly used to connect electrical equipment; or they can be output to an inverter, where the DC is converted to AC and then connected to electrical equipment.

[0070] Second wiring method: Refer to Figures 8 to 14A lower photovoltaic junction box 5 is provided on the back surface of the photovoltaic module 1. The lower photovoltaic junction box 5 has a lower positive conductor 52 and a lower negative conductor 53, which can be electrically connected to the positive conductor strip and the negative conductor strip of the photovoltaic module 1, respectively. The positive conductor strip 21 and the negative conductor strip 22 of the cover plate 2 extend out of the side of the cover plate 2. The positive conductor strip 21 of the cover plate 2 is connected to the lower positive conductor 52 through the positive connecting conductor 23, and the negative conductor strip 22 of the cover plate 2 is connected to the lower negative conductor 53 through the negative connecting conductor 24.

[0071] The structure of the lower photovoltaic junction box 5 is similar to that mentioned in the first wiring method, the only difference being that two intermediate wires need to be inserted into the lower junction box body 51, so holes need to be made on the lower junction box body 51. The main difference between the second wiring method and the first wiring method is that a photovoltaic junction box is not set separately on the cover plate 2, but is connected to the lower photovoltaic junction box 5 through connecting wires. In this way, there is no need to set up a busbar 7. The ends of the lower positive wire 52 and the lower negative wire 53 away from the lower junction box body 51 constitute the positive terminal 81 and the negative terminal 82, respectively, which can be directly used to connect electrical equipment; or they can be output to the inverter, and after the inverter converts DC to AC, they can be connected to electrical equipment.

[0072] In the second wiring method, in order to facilitate the connection of the connecting wires to the corresponding current-conducting strips, and the connection of the connecting wires to the wires of the lower photovoltaic junction box 5, both the positive connecting wire 23 and the negative connecting wire 24 include a wire core 25 and an insulating sleeve 26 wrapped around the wire core 25. The first end of the insulating sleeve 26 is provided with an insulating block 27 having a groove 270. The positive current-conducting strip 21 or the negative current-conducting strip 22 of the cover plate 2 can be accommodated in the groove 270. The first end of the wire core 25 can extend into the groove 270 and connect with the positive current-conducting strip 21 or the negative current-conducting strip 22 of the cover plate 2. The second end of the wire core 25 can extend out of the second end of the insulating sleeve 26 and connect with the lower positive wire 52 or the lower negative wire 53 in the lower photovoltaic junction box 5.

[0073] Furthermore, the lower photovoltaic junction box 5 also includes a lower junction box body 51, with one end of the lower positive conductor 52 and one end of the lower negative conductor 53 extending into the lower junction box body 51; two through holes are provided on the lower junction box body 51, and one end of the positive connecting conductor 23 and one end of the negative connecting conductor 24 can respectively extend into the lower junction box body 51 through the two through holes; an insulating sealant layer is provided between the positive connecting conductor 23 and the negative connecting conductor 24 and the two through holes, in the groove 270, and between the insulating block 27 and the side of the cover plate 2.

[0074] Reference Figure 11 and Figure 14The insulating block 27 is formed by a base plate 271, two side plates 272, and an end plate 273. The two side plates 272 are parallel and perpendicularly connected to opposite sides of the base plate 271, and the end plate 273 is perpendicularly connected to one end of the base plate 271 and connected to the two side plates 272. The space between the base plate 271, the two side plates 272, and the end plate 273 forms the aforementioned groove 270. The end plate 273 is connected to the first end of the aforementioned insulating sleeve 26. An opening is provided on the end plate 273, through which the first end of the conductor core 25 can pass and connect (e.g., welded) to the corresponding conductive strip within the groove 270. Insulating sealant is then applied within the groove 270 and between the insulating block 27 and the side of the cover plate 2 to ensure sealing, insulation, and fixation.

[0075] During normal installation, the groove of the recess 270 faces the photovoltaic module 1, that is, the outer surface of the base plate 271 faces away from the photovoltaic module 1, so as to protect the internal wiring.

[0076] Of course, other existing methods can also be used for wiring the cover plate 2; this embodiment is only for illustrative purposes.

[0077] For the first form of cover plate 2, cover plate 2 itself is a photovoltaic panel structure 28, and the specific structure and materials can adopt any of the existing feasible methods.

[0078] For example, in one embodiment, referring to Figure 15 The cover plate 2 includes a substrate layer 281 (i.e., backsheet layer), a photovoltaic cell layer 282, a film layer 283, and a front panel layer 284 stacked sequentially. The photovoltaic cell layer 282 includes a transparent conductive layer 2821, a buffer layer 2822, a light-absorbing layer 2823, and a back electrode layer 2824 stacked sequentially. The back electrode layer 2824 is arranged close to the substrate layer 281 and is a light-transmitting layer. The substrate layer 281 is stacked on the light-incident surface of the photovoltaic panel 12 of the photovoltaic module 1.

[0079] One end of the positive electrode conductive strip 21 and the negative electrode conductive strip 22 of the cover plate 2 are in contact with the photovoltaic cell layer 282; when the cover plate 2 adopts the second wiring method described above, the other end of the positive electrode conductive strip 21 and the negative electrode conductive strip 22 are connected to the corresponding conductor core 25. The substrate layer 281 and the front panel layer 284 are both made of glass, and the film layer 283 can be, for example, an EVA transparent film layer. The transparent conductive layer 2821 can be made of AZO, ITO, FTO, ZTO, or TCO. The buffer layer 2822 can be made of CdS, SnS2, ZnMgO, Zn(S,O), ZnS, ZnSe, CdZnS, or CdZnSe. The back electrode layer 2824 is made of a light-transmitting material, for example, the back electrode layer 2824 can be made of AZO, ITO, FTO, ZTO, or TCO. The photovoltaic module 1 described above is generally a non-light-transmitting structure.

[0080] When the cover plate 2 is a photovoltaic panel structure 28 capable of absorbing long wavelengths, the light-absorbing layer 2823 can, for example, be a long-wavelength material disclosed in patent publication number CN118367042A. For example, a doped copper-tin compound or a doped copper indium selenide compound (i.e., the first compound mentioned in that patent) disclosed in that patent. The doped copper-tin compound is Cu2Cd. 1-x Zn x SnTe 4- y Se y Where y = 4, 0.25 ≤ x ≤ 0.375; or 0 ≤ y ≤ 0.5, 0 ≤ x ≤ 0.5. The doped copper indium selenide compound is Cu. 1- x Cs x InSe2, 0.25≤x≤0.5.

[0081] When the cover plate 2 is a photovoltaic panel structure 28 capable of absorbing short waves, the material of the light absorption layer 2823 can be, for example, the short-wave material disclosed in the patent with publication number CN118367042A, such as the doped copper indium selenide compound (i.e., the second compound mentioned in the patent) disclosed in that patent, where the doped copper indium selenide compound is CuIn 1-x M x Se2, M is an element La or Y. When M is an element La, 0 < x ≤ 0.5; when M is an element Y, 0 ≤ x ≤ 0.25.

[0082] Of course, the material of the cover plate 2 can be any of those disclosed in the prior art as needed, as long as it can absorb long-wave or short-wave light. This embodiment is only an example.

[0083] The second form of cover plate 2: Cover plate 2 is a plate capable of converting long-wavelength and / or short-wavelength light into medium-wavelength light, which can be implemented as follows: (Refer to...) Figure 16 The cover plate 2 includes a glass plate 291 and a first coating 292 that can convert long-wave light into medium-wave light and / or a second coating 293 that can convert short-wave light into medium-wave light, disposed on the surface of the glass plate 291.

[0084] In actual design, a first coating 292 can be applied to the first and / or second surfaces of the glass plate 291, or a second coating 293 can be applied to the first and / or second surfaces of the glass plate 291. Alternatively, a first coating 292 and a second coating 293 can be stacked on the first (or second) surface of the glass plate 291. Furthermore, [the design can be modified as follows]. Figure 16The diagram shows a first coating 292 applied to a first surface of a glass plate 291 and a second coating 293 applied to a second surface. The first and second surfaces are two surfaces of the glass plate 291 arranged opposite to each other.

[0085] Taking the application of a first coating 292 on the first surface of glass plate 291 as an example, the resulting cover plate 2 can convert long-wave light into medium-wave light, thus enabling the solar module formed by the cover plate 2 and photovoltaic module 1 to absorb both long-wave and medium-wave light. Taking the application of a first coating 292 and a second coating 293 on the first and second surfaces of glass plate 291 as another example, the resulting cover plate 2 can convert both long-wave and short-wave light into medium-wave light, thus enabling the solar module formed by the cover plate 2 and photovoltaic module 1 to absorb both long-wave and short-wave medium-wave light, resulting in more complete light absorption.

[0086] For example, the materials of the first coating 292 and the second coating 293 can be the first conversion light-emitting material and the second conversion light-emitting material disclosed in the patent with publication number CN118676236A, respectively. The first conversion light-emitting material includes a first core layer and a first shell layer. The general formula of the first core layer is: (R 1a (R) 1b )2SiO4:R 1c The general formula for the first shell is: (R 1d )2SiO4; where R 1c Selected from Er 3+ Eu 3+ Yb 3+ Gd 3+ and Tb 3+ At least two of them, R 1a Selected from Zn 2+ Mg 2+ Ca 2+ At least one of them, R 1b Selected from Li + Na + K + At least one of them, R 1d Selected from Zn 2+ Mg 2+ and Ca 2+ At least one of the following. The second conversion luminescent material includes a second core layer and a second shell layer, the general formula of which is: (R 2a (R) 2b )2SiO4:R 2c The general formula for the second shell is: (R 2d )2SiO4; where R 2c Selected from Er 3+ Eu 3+ Yb 3+ Gd 3+ and Tb3+ One of them, R 2a Selected from Zn 2+ Mg 2+ Ca 2+ At least one of them, R 2b Selected from Li + Na + K + At least one of them, R 2d Selected from Zn 2+ Mg 2+ and Ca 2+ At least one of them.

[0087] In a specific example, both the first coating 292 and the second coating 293 are made of doped zinc silicate. The second coating 293 can be, for example, ZnNa2SiO4 doped with Eu, Yb, Gd, or Tb. 3+ Yb 3+ The absorption of blue-violet and ultraviolet light is achieved through a multi-level system and energy transfer between multiple ions, converting it into visible light; the first coating 292 can be, for example, ZnNa2SiO4 doped with Yb and Er, through Yb 3+ and Er 3+ Energy transfer between them and the multi-level system enable the absorption of infrared light and its conversion into visible light.

[0088] Of course, for the materials of the first coating 292 and the second coating 293, any material disclosed in the prior art can be selected as needed, as long as it can convert long-wave or short-wave light into medium-wave light. This embodiment is only for illustrative purposes.

[0089] The third form of cover plate 2: cover plate 2 is a glass plate that can convert long-wavelength and / or short-wavelength light into medium-wavelength light.

[0090] In this third form, the cover plate 2 is a glass plate with light conversion function, which is made by adding conversion material into the glass material during manufacturing.

[0091] For example, the cover plate 2 can be the solar photovoltaic cell cover glass disclosed in the patent with publication number CN118676236A. The raw materials of the solar photovoltaic cell cover glass include a light-converting material and silicon dioxide. The light-converting material includes a first light-converting material and a second light-converting material. The first light-converting material can convert long-wave light into medium-wave light, and the second light-converting material can convert short-wave light into medium-wave light. Thus, the solar photovoltaic cell cover glass can convert both long-wave and short-wave light into medium-wave light, which can then be absorbed by the photovoltaic module 1 to generate electricity. In this way, the solar module composed of the cover plate 2 and the photovoltaic module 1 has a higher power generation efficiency.

[0092] Of course, the cover plate 2 can also be a glass plate made by adding the first conversion light-emitting material in the patent CN118676236A to the glass material (silicon dioxide) to realize the conversion of long-wave light to medium-wave light; or, the cover plate 2 can also be a glass plate made by adding the second conversion light-emitting material in the patent CN118676236A to the glass material to realize the conversion of short-wave light to medium-wave light.

[0093] Of course, for glass plates with light conversion function, any of the existing technologies disclosed can be selected as needed, as long as they can convert long-wavelength light and / or short-wavelength light into medium-wavelength light. This embodiment is only for illustrative purposes.

[0094] It should be noted that the wavelengths of medium-wave light mentioned in this application are 500nm-1100nm, short-wave light are 380nm-500nm, and long-wave light are greater than 1100nm. The specific classification of light wavelengths shall be based on the ranges known in the industry.

[0095] Implementation Method 2

[0096] This application also proposes a solar module, including a first photovoltaic structure and a second photovoltaic structure. The second photovoltaic structure is a light-transmitting structure and is stacked on the light-incident surface of the first photovoltaic structure. The first photovoltaic structure and the second photovoltaic structure are fixed by a plurality of snap-fit ​​structures 3 arranged circumferentially. The snap-fit ​​structure 3 includes a first plate 31 and a second plate 32 arranged in parallel and spaced apart, and an intermediate plate 33 connecting the first plate 31 and the second plate 32. The first plate 31 and the second plate 32 can respectively abut against the surfaces of the first photovoltaic structure and the second photovoltaic structure that are facing away from each other, and the intermediate plate 33 can abut against the side of the first photovoltaic structure.

[0097] Therefore, the solar module in this application can fasten and fix two photovoltaic structures by means of multiple snap-fit ​​structures 3, which is simple, convenient and stable, and can quickly realize the assembly of two photovoltaic structures, effectively solving the problem of inconvenient assembly of two photovoltaic structures in the past.

[0098] Specifically, the structure of the snap-fit ​​structure 3 can be the same as that of the snap-fit ​​structure 3 in the above embodiment, and has the same effect, so it will not be described again here.

[0099] In some embodiments, the two photovoltaic structures can absorb light of different wavelengths, thereby broadening the wavelength range of absorbable light and improving the power generation efficiency per unit area.

[0100] Optionally, the first photovoltaic structure is the photovoltaic module 1 in Embodiment 1 above, that is, a traditional photovoltaic module composed of an annular frame 11 and a photovoltaic panel 12, which can absorb medium-wave light. The second photovoltaic structure is the photovoltaic panel structure in Embodiment 1 above that can absorb long-wave or short-wave light, so as to absorb light of a wider range of wavelengths and improve power generation efficiency.

[0101] The above are merely illustrative embodiments of this utility model and are not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.

Claims

1. A solar module, characterized in that, include: Photovoltaic modules that can absorb mid-wavelength light; A cover plate that can absorb long-wave or short-wave light, or convert long-wave and / or short-wave light into medium-wave light, wherein the cover plate is a light-transmitting structure and is stacked on the light-incident surface of the photovoltaic module; Multiple snap-fit ​​structures are provided, in which the photovoltaic module and the cover plate are snapped together and fixed by multiple snap-fit ​​structures arranged circumferentially; the snap-fit ​​structure includes a first plate and a second plate arranged in parallel and spaced apart, and an intermediate plate connected between the first plate and the second plate. The first plate and the second plate can respectively abut against the surfaces of the cover plate and the photovoltaic module that are facing away from each other, and the intermediate plate can abut against the side of the photovoltaic module.

2. The solar module as described in claim 1, characterized in that, The photovoltaic module includes an annular frame and a photovoltaic panel. An annular groove is formed inside the annular frame. The outer periphery of the photovoltaic panel is embedded and snapped into the annular groove. The cover plate is stacked on the light-incident surface of the photovoltaic panel, and a gap is left between the outer periphery of the cover plate and the inner edge of the annular frame. The second plate and the middle plate can respectively abut against the surface of the annular frame opposite to the cover plate and the side of the annular frame.

3. The solar module as described in claim 2, characterized in that, The intermediate plate is also provided with a limiting plate that can limit the side of the cover plate.

4. The solar module as described in claim 1, characterized in that, An elastic block is also sandwiched between the light-incident surface of the first plate and the cover plate.

5. The solar module as described in claim 4, characterized in that, An inclined surface is formed on the inner surface of the first plate, and an inclined surface that cooperates with the inclined surface is formed on the elastic block.

6. The solar module as described in claim 5, characterized in that, Multiple protruding ridges are provided on the inclined surface.

7. The solar module as described in claim 2, characterized in that, A transparent elastic gasket is also sandwiched between the photovoltaic panel and the cover plate.

8. The solar module as described in claim 1, characterized in that, The cover plate is a photovoltaic panel structure that can absorb long-wave or short-wave light. A lower photovoltaic junction box is provided on the back surface of the photovoltaic module. The lower photovoltaic junction box has a lower positive conductor and a lower negative conductor, which can be electrically connected to the positive and negative current-carrying bands of the photovoltaic module, respectively. An upper photovoltaic junction box is provided on the side of the cover plate. The upper photovoltaic junction box has an upper positive electrode wire and an upper negative electrode wire, which can be electrically connected to the positive electrode guide strip and the negative electrode guide strip of the cover plate, respectively. The lower positive electrode wire, the lower negative electrode wire, the upper positive electrode wire, and the upper negative electrode wire are connected to a busbar positive electrode wire and a busbar negative electrode wire through a busbar.

9. The solar module as described in claim 1, characterized in that, The cover plate is a photovoltaic panel structure that can absorb long-wave or short-wave light. A lower photovoltaic junction box is provided on the back surface of the photovoltaic module. The lower photovoltaic junction box has a lower positive conductor and a lower negative conductor, which can be electrically connected to the positive and negative current-carrying bands of the photovoltaic module, respectively. The positive and negative electrode guide strips of the cover plate extend out of the side of the cover plate. The positive electrode guide strip of the cover plate is connected to the lower positive electrode wire through a positive electrode connecting wire, and the negative electrode guide strip of the cover plate is connected to the lower negative electrode wire through a negative electrode connecting wire.

10. The solar module as described in claim 9, characterized in that, Both the positive and negative connecting wires include a conductor core and an insulating sleeve wrapped around the conductor core. The first end of the insulating sleeve is provided with an insulating block having a groove. The positive or negative current-conducting strip of the cover plate can be accommodated in the groove. The first end of the conductor core can extend into the groove and connect with the positive or negative current-conducting strip of the cover plate. The second end of the conductor core can extend out of the second end of the insulating sleeve and connect with the lower positive or lower negative conductor in the lower photovoltaic junction box.

11. The solar module as described in claim 10, characterized in that, The lower photovoltaic junction box also includes a lower junction box body, with one end of the lower positive electrode wire and one end of the lower negative electrode wire extending into the lower junction box body; two through holes are provided on the lower junction box body, and one end of the positive electrode connecting wire and one end of the negative electrode connecting wire can respectively extend into the lower junction box body through the two through holes; an insulating sealant layer is provided between the positive electrode connecting wire and the negative electrode connecting wire and the two through holes, in the groove, and between the insulating block and the side of the cover plate.

12. The solar module as described in claim 1, characterized in that, The cover plate includes a substrate layer, a photovoltaic cell layer, a film layer and a back sheet layer stacked in sequence. The photovoltaic cell layer includes a transparent conductive layer, a buffer layer, a light absorption layer and a back electrode layer stacked in sequence. The back electrode layer is arranged close to the substrate layer and is a light-transmitting layer. The substrate layer is stacked on the light-incident surface of the photovoltaic module.

13. The solar module as described in claim 1, characterized in that, The cover plate includes a glass plate and a first coating on the surface of the glass plate that can convert long-wave light into medium-wave light and / or a second coating that can convert short-wave light into medium-wave light.

14. The solar module as described in claim 1, characterized in that, The cover plate is a glass plate capable of converting long-wavelength and / or short-wavelength light into medium-wavelength light.

Images