Solar panel

Abstract

Provided is a solar panel. The solar panel comprises a hard frame and a battery piece, the hard frame is provided with an accommodating hole, and the battery piece is arranged in the accommodating hole.

Description

solar panels

[0001] Priority information

[0002] This application claims priority and benefits of the patent application with patent application number "202221779611.7" filed with the State Intellectual Property Office of China on July 11, 2022, priority and benefits of the patent application with patent application number "202210775387.2" filed with the State Intellectual Property Office of China on July 1, 2022, priority and benefits of the patent application with patent application number "202223301238.7" filed with the State Intellectual Property Office of China on December 9, 2022, and priority and benefits of the patent application with patent application number "202320081870.0" filed with the State Intellectual Property Office of China on January 13, 2023, and the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the field of solar energy technology, and in particular to a solar panel. Background Art

[0004] Solar panels, short for solar cells, are the core component of solar power generation systems. They absorb sunlight to generate electricity, which can then be used to directly power products or charge batteries, which then power products.

[0005] Summary of the Invention

[0006] An embodiment of the present application provides a solar panel.

[0007] The solar panel according to the embodiment of the present application includes solar cells, which are used to receive light and generate electricity.

[0008] The solar panel of this embodiment includes a hard frame and solar cells. The hard frame is provided with a receiving hole, and the solar cells are arranged in the receiving hole.

[0009] The solar panel of this embodiment has a built-in hard frame and a power generation module composed of solar cells, wherein the power generation module composed of solar cells is used to receive light and generate electricity. The solar cells are placed in the receiving holes of the hard frame. The hard frame can protect the solar cells from the packaging cross-section direction, improve the impact resistance, bending resistance and mechanical strength. At the same time, compared with traditional external metal frames, it is lighter in weight, can reduce edge obstruction, and will not block the operation of the solar cells.

[0010] In certain embodiments, a solar panel includes a power generation assembly and conductors. The power generation assembly includes a rigid frame, a cell, a backsheet, and an insulating plate. The rigid frame has a receiving hole formed therein; the cell is disposed within the receiving hole; the backsheet is disposed within the receiving hole and positioned on the cell, with an adhesive film disposed between the backsheet and the cell; the insulating plate covers one end of the rigid frame proximal to the backsheet, and the conductors are disposed between the backsheet and the insulating plate.

[0011] The solar panel of this embodiment includes a power generation assembly and conductors. The power generation assembly includes a rigid frame, cells, a backsheet, and an insulating plate. The rigid frame is provided with a receiving hole, into which both the cells and the backsheet are positioned. The backsheet is positioned on the side of the cells closest to the backsheet. The insulating plate covers one end of the rigid frame closest to the backsheet, and the conductors are positioned between the backsheet and the insulating plate. By adding an insulating plate and positioning the conductors between the backsheet and the insulating plate, the solar panel can better protect the conductors, avoid leakage problems caused by exposed conductors, and improve the safety of the solar panel.

[0012] In certain embodiments, the solar panel includes a rigid frame, a solar cell layer, a front plate layer, and a back plate layer. The rigid frame is provided with a receiving hole; the solar cell layer is disposed in the receiving hole; the front plate layer is located on one side of the solar cell layer; and the back plate layer is located on the opposite side of the solar cell layer.

[0013] The solar panel of this embodiment has a built-in hard frame and a power generation module consisting of a cell layer, a front plate layer and a back plate layer, wherein the cell layer is used to receive light and generate electricity, the front plate layer and the back plate layer respectively play the role of protecting the cell layer from the front and back, and the cell layer power generation module is placed in the accommodating hole of the hard frame. The hard frame can protect the cell layer power generation module from the packaging cross-section direction, improve the impact resistance, bending resistance and mechanical strength, and at the same time, compared with traditional external metal frames, it is lighter in weight, can reduce edge obstruction, and will not block the operation of the cell layer.

[0014] In some embodiments, the solar panel includes a stacked cell layer, a glass fiber reinforced layer and two protective layers, the two protective layers are respectively arranged on both sides of the cell layer, the glass fiber reinforced layer is arranged between the cell layer and the protective layer, the glass fiber reinforced layer is made of a mixture of glass fiber and impregnated rubber, and the glass fiber reinforced layer and the protective layer are both set to transparent structures.

[0015] In this embodiment, a glass fiber reinforced layer is provided between the protective layer and the cell layer, wherein the cell layer is used to receive light and generate electricity, and the protective layer is used to protect the inner layer structure. Both the glass fiber reinforced layer and the protective layer are transparent structures and do not affect the operation of the cell layer. The glass fiber reinforced layer is made of a mixture of glass fiber and impregnating rubber. On the one hand, the glass fiber reinforced layer can improve the impact resistance of the cell layer and the bending resistance of the solar panel. On the other hand, the glass fiber and the impregnating rubber constituting the glass fiber reinforced layer have low density, which has little effect on the self-weight of the solar panel, thereby ensuring the portability of the solar panel.

[0016] In some embodiments, the solar panel includes a battery layer and a front panel and a back panel stacked on the front and back sides of the battery layer, respectively. The battery layer includes a rigid frame and a battery string. The rigid frame includes a plurality of vertical frame bars and a plurality of horizontal frame bars. The vertical frame bars are cross-connected with the horizontal frame bars to form a plurality of accommodating holes. The battery string includes a plurality of battery cells. The battery cells are placed in the accommodating holes. The vertical frame bars and the horizontal frame bars are detachably connected.

[0017] The solar panel of this embodiment employs a rigid frame between the front and back panels, with the battery strings positioned within the frame's accommodating holes. This frame provides superior support strength, minimizing damage to the battery strings from bending and deformation of the solar panel, thereby protecting the battery strings and improving mechanical strength. This eliminates the need for additional layers or fiberglass, reducing overall mass and equipment costs. The rigid frame, comprised of multiple detachably connected vertical and horizontal bars, offers lower production costs compared to integrated frame structures and facilitates assembly and combination of various shapes, sizes, and thicknesses, offering greater flexibility.

[0018] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the embodiments of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] FIG1 is a cross-sectional exploded view of a solar panel provided in an embodiment of the present application;

[0021] FIG2 is a top view of a solar panel provided in an embodiment of the present application;

[0022] Figure 3 is an enlarged view of point A in Figure 2;

[0023] FIG4 is a schematic diagram of the exploded structure of the solar panel provided in Example 1 of the present application;

[0024] FIG5 is a schematic diagram of the exploded structure of a solar panel provided in Example 2 of the present application;

[0025] FIG6 is a schematic diagram of the exploded structure of a solar panel provided in Example 3 of the present application;

[0026] FIG7 is a schematic diagram of the exploded structure of a solar panel provided in Example 4 of the present application;

[0027] FIG8 is a schematic diagram of the exploded structure of a solar panel provided in Example 5 of the present application;

[0028] FIG9 is a schematic diagram of the exploded structure of a solar panel provided in Example 6 of the present application;

[0029] FIG10 is a schematic diagram of the exploded structure of a solar panel provided in Example 7 of the present application;

[0030] FIG11 is a schematic diagram of the exploded structure of a solar panel provided in Example 8 of the present application;

[0031] FIG12 is a schematic diagram of the exploded structure of a solar panel provided in Example 9 of the present application;

[0032] FIG13 is a schematic diagram of the exploded structure of the solar panel provided in Example 10 of the present application;

[0033] FIG14 is a schematic diagram of the exploded structure of the solar panel provided by the present application;

[0034] FIG15 is a schematic structural diagram of the battery layer provided in this application;

[0035] FIG16 is a schematic structural diagram of a rigid frame provided in the present application;

[0036] FIG17 is an enlarged schematic diagram of area B in FIG16 ;

[0037] FIG18 is a schematic structural diagram of a battery string provided by the present application;

[0038] FIG19 is a schematic diagram of the decomposed structure of the battery layer provided in this application.

[0039] Reference numerals: 1100, power generation component; 1200, conductor; 1300, front film; 1400, back film; 1500, insulating film; 1600, adhesive film; 1700, bending area; 1800, handle structure; 11, rigid frame; 111, first side; 112, second side; 113, third side; 114, fourth side; 12, battery cell; 13, back sheet; 14, insulating sheet; 15, front sheet; 21, battery cell layer; 211, battery cell; 22, front sheet layer; 221, front sheet unit; 23, back sheet layer; 231, back sheet unit; 24, rigid frame; 241, receiving hole; 25, front film layer; 26, back film layer; 27, first encapsulation film; 271, sub-encapsulation film; 28, second encapsulation film. 31. Cell layer; 311. Cell cell; 32. Glass fiber reinforced layer; 321. Glass fiber reinforced unit; 3321; 33. Protective layer; 34. Load-bearing layer; 35. Rigid frame; 351. Accommodation hole; 36. Encapsulation film; 4100. Rigid frame; 4110. Vertical frame bar; 4111. Vertical inner frame bar; 4112. Vertical border bar; 4120. Horizontal frame bar; 4121. Horizontal inner frame bar; 4122. Horizontal border bar; 4130. Accommodation hole; 4141. First mortise and tenon joint; 4142. Second mortise and tenon joint; 4200. Cell string; 4201. Cell; 4202. Welding strip; 4203. Vertical gap; 4204. Horizontal gap; 4300. Front plate; 4400. Back plate; 4500. Adhesive film. DETAILED DESCRIPTION

[0040] The following further describes the embodiments of the present application in conjunction with the accompanying drawings. The same or similar reference numerals in the accompanying drawings represent the same or similar elements or elements with the same or similar functions.

[0041] In addition, the embodiments of the present application described below in conjunction with the accompanying drawings are exemplary and are only used to explain the embodiments of the present application and should not be understood as limiting the present application.

[0042] Figure 1 shows a cross-sectional exploded view of the solar panel provided by the present application. As shown in Figure 1, the solar panel includes a rigid frame 11 and a cell 12. The rigid frame 11 is provided with a receiving hole, and the cell 12 is disposed in the receiving hole.

[0043] The cell 12 of the solar panel of the present application is placed in the receiving hole of the hard frame 11. The hard frame 11 can protect the cell 12 from the packaging cross-section direction, improve the impact resistance, bending resistance and mechanical strength. At the same time, compared with the traditional external metal frame, it is lighter in weight and can reduce edge obstruction, and will not block the operation of the cell 12.

[0044] FIG1 shows a cross-sectional exploded view of the solar panel provided in the present application. As shown in FIG1 , the solar panel includes a power generation component 1100 and a wire 1200, and the wire 1200 is used to electrically connect the power generation component 1100. The power generation component 1100 includes a rigid frame 11, a battery cell 12, a back plate 13, an insulating plate 14, and a front plate 15. The rigid frame 11 is provided with a receiving hole, and the battery cell 12 and the back plate 13 are both arranged in the receiving hole, and the back plate 13 is arranged on the side of the battery cell 12 close to the back film 1400, and an adhesive film 1600 is provided between the back plate 13 and the battery cell 12; the insulating plate 14 covers one end surface of the rigid frame 11 close to the back plate 13, and the front plate 15 covers one end surface of the rigid frame 11 close to the battery cell 12, and the wire 1200 is arranged between the back plate 13 and the insulating plate 14. By adding an insulating plate 14 and arranging the wires 1200 between the back plate 13 and the insulating plate 14 , the solar panel can better protect the wires 1200 , avoid leakage problems caused by the wires 1200 being exposed, and improve the safety of the solar panel.

[0045] The front panel 15 can be made of an insulating transparent material with mechanical toughness, such as PET and its composite material, or thin glass. This arrangement can improve the solar energy conversion efficiency of the power generation component 1100 and meet the user's power demand.

[0046] The back plate 13 can be made of a supporting material with mechanical toughness, such as glass fiber board, PET and PET composite material, or thin glass. This configuration can support the battery cell 12 to better protect the battery cell 12.

[0047] The insulating plate 14 can be made of a puncture-proof material with mechanical strength, such as fiberglass, PET, or a composite material of PET. This arrangement can prevent the wire 1200 from breaking and piercing the insulating plate 14, thereby preventing the solar panel from leaking electricity.

[0048] FIG2 shows a top view of the solar panel provided by the present application. As shown in FIG1 and FIG2 , the solar panel further includes a front film 1300 and a back film 1400. At least two power generation assemblies 1100 are spaced apart along a first direction between the front film 1300 and the back film 1400. The spacing between two adjacent power generation assemblies 1100 forms a bending area 1700 on the front film 1300 and the back film 1400. A conductor 1200 is used to electrically connect the two adjacent power generation assemblies 1100. The solar panel folds at the bending area 1700 formed between two adjacent power generation assemblies 1100, making it easier to fold and store the solar panel, making it easier to carry and transport the solar panel and meeting people's outdoor travel needs.

[0049] The front film 1300 is made of a transparent, flexible material, such as ETFE, PVDF, PVF, or ECTFE. These materials are resistant to aging, extending the lifespan of the solar panel. Furthermore, the back film 1400 is made of a transparent, flexible material, such as ETFE, PVDF, PVF, or ECTFE. These materials are resistant to aging, extending the lifespan of the solar panel. Furthermore, the back film 1400 can also be made of an opaque fabric.

[0050] An adhesive film 1600 is provided between the front film 1300 and the front plate 15 to improve the connection strength between the front film 1300 and the front plate 15. An adhesive film 1600 is provided between the back film 1400 and the insulating plate 14 to improve the connection strength between the back film 1400 and the insulating plate 14.

[0051] 2 , the battery cell 12 is a plurality of battery units arranged in a rectangular array. The battery units and the battery cells 12 are electrically connected via wires 1200 , and the wires 1200 are used to connect the battery cells 12 in series or parallel.

[0052] Continuing with FIG2 , the solar panel also includes handle structures 1800 , two of which are located at opposite ends of the at least two power generation assemblies 1100 in the first direction. These handle structures 1800 facilitate carrying the solar panel when folded, enhancing the user experience.

[0053] Furthermore, the handle structure 1800 is provided with a handle groove, and the front film 1300 and the back film 1400 are provided with through grooves at positions corresponding to the handle grooves, and the shape of the through grooves is adapted to the shape of the handle grooves. Users can directly lift the solar panel through the handle grooves.

[0054] Continuing to refer to Figure 2, the rigid frame 11 is formed by a plurality of detachable edges that are spliced ​​and enclosed. Such an arrangement can achieve a detachable connection of the rigid frame 11. Exemplarily, the rigid frame 11 includes a first side 111, a second side 112, a third side 113 and a fourth side 114, 114. The first side 111 and the third side 113 are arranged in parallel and spaced apart along the first direction, the second side 112 and the fourth side 114 are arranged in parallel and spaced apart, the two ends of the first side 111 are detachably connected to the second side 112 and the fourth side 114, 114 respectively, and the two ends of the third side 113 are detachably connected to the second side 112 and the fourth side 114, 114 respectively. Preferably, the rigid frame 11 is a square, and the lengths of the first side 111, the second side 112, the third side 113 and the fourth side 114, 114 are the same, which can achieve mass production and improve the versatility of parts.

[0055] In Figure 2 , the rigid frame 11 and handle structure 1800 of the power generation assembly 1100 located at the end in the first direction are integrally formed. For example, the handle structure 1800 is integrally formed with one side of the rigid frame 11. Of course, in other embodiments, the handle structure 1800 may also be fixedly connected to an adjacent side of the rigid frame 11.

[0056] When the solar panel is repeatedly folded and unfolded in the bending area 1700, the portion of the wire 1200 in the bending area 1700 is inevitably prone to breaking or cracking. To address this problem, Figure 3 shows an enlarged view of point A in Figure 2. As shown in Figure 3 in conjunction with Figure 2, the solar panel also includes an insulating film 1500. The portion of the wire 1200 located in the bending area 1700 is covered with the insulating film 1500, and at least a portion of the insulating film 1500 extends between the adjacent backplane 13 and insulating plate 14. This arrangement can avoid leakage problems caused by breakage of the wire 1200. The insulating film 1500 can be made of PET film or cloth coated with an insulating layer.

[0057] Preferably, both sides of the wire 1200 located in the bending area 1700 are covered with an insulating film 1500. This arrangement can better protect both sides of the wire 1200, prevent the wire 1200 from breaking and piercing the front film 1300 and the back film 1400, and prevent the solar panel from leaking electricity.

[0058] The portion of the conductor 1200 in the bending area 1700 uses a scattered braided copper wire to reduce the bending force on the conductor 1200 in the bending area 1700, extend the service life of the conductor 1200, and avoid leakage problems caused by the conductor 1200 breaking and piercing the front film 1300 or the back film 1400.

[0059] Example 1:

[0060] As shown in Figure 4, this embodiment provides a solar panel, which includes a power generation module and a hard frame 24. The hard frame 24 is set as a frame structure. A receiving hole 241 is provided in the hard frame 24. The power generation module is arranged in the receiving hole 241. The power generation module includes a stacked cell layer 21, a front plate layer 22 and a back plate layer 23. The cell layer 21 is arranged between the front plate layer 22 and the back plate layer 23. The front plate layer 22 and the back plate layer 23 are both set as transparent structures.

[0061] Specifically, the solar panel provided in this embodiment has a built-in hard frame 24 and a power generation module consisting of a cell layer 21, a front plate layer 22 and a back plate layer 23, wherein the cell layer 21 is used to receive light and generate electricity, the front plate layer 22 and the back plate layer 23 respectively play the role of protecting the cell layer 21 from the front and back, and the cell layer 21 is placed in the accommodating hole 241 of the hard frame 24. The hard frame 24 can protect the cell layer 21 from the packaging cross-section direction, improve the impact resistance, bending resistance and mechanical strength, and at the same time, compared with traditional external metal frames, it is lighter in weight, can reduce edge obstruction, and will not block the operation of the cell layer 21.

[0062] Optionally, the entire power generation module is located in the accommodating hole 241 , that is, the front plate layer 22 , the battery layer 21 and the back plate layer 23 are all located in the accommodating hole 241 .

[0063] Optionally, the cell layer 21 includes at least two cells 211, the front panel layer 22 includes a front panel unit 221, the back panel layer 23 includes a back panel unit 231, a receiving hole 241 is provided in the rigid frame 24, and the sub-power generation module includes stacked cells 211, a front panel unit 221 and a back panel unit 231, and each receiving hole 241 is provided with at least one sub-power generation module. In this embodiment, the cell layer 21 includes four cells 211 distributed in a matrix, and the integrated front panel unit 221 and the integrated back panel unit 231 are respectively provided on the front and back sides of the four cells 211. Specifically, when the size of the solar panel is small (generally less than 0.1 m2), the rigid frame 24 is designed as a single-window structure, and the sub-power generation module is provided in the same receiving hole 241 of the rigid frame 24.

[0064] Preferably, the cell layer 21 includes a plurality of double-sided crystalline silicon chips, and each cell 211 is provided with a double-sided crystalline silicon chip. The double-sided crystalline silicon chip can receive light from both sides and generate electricity, thereby increasing the power generation of the cell layer 21 per unit weight.

[0065] Preferably, the rigid frame 24 is made of a high-temperature resistant polymer or metal material, such as a polyimide polymer, an aromatic polyamide polymer, or an aluminum alloy. While improving impact resistance, bending resistance, and mechanical strength, it is also lighter than traditional external metal frames and does not obstruct the double-sided operation of the solar cells 211. When installing the solar panels, the cells 211 are simply placed in the corresponding receiving holes 241 and laminated, eliminating the need for an integral frame and simplifying production.

[0066] Preferably, the thickness of the hard frame 24 is not less than the thickness of the battery layer 21, thereby improving the reliability of protection.

[0067] More preferably, the thickness of the hard frame 24 is not less than the thickness of the power generation module, further improving the reliability of protection.

[0068] Preferably, the hard frame 24 has a thickness of 0.5-3 mm and a width of 5-30 mm.

[0069] Preferably, the front panel layer 22 and the back panel layer 23 use transparent polymer materials or ultra-thin glass, such as PC (polycarbonate), PET (polyester resin), or coated PET film material. The front panel layer 22 and the back panel layer 23 can also be made of transparent flexible materials with good mechanical strength such as EPE (expandable polyethylene), FPF (composite phenolic foam), KPK (double-sided fluorine-containing backboard).

[0070] Preferably, the thickness of the front plate layer 22 and the back plate layer 23 is 0.2-1 mm.

[0071] Optionally, the solar panel further includes a front film layer 25 and a back film layer 26, which are attached to the front and back of the power generation module, respectively. Specifically, the front film layer 25 is disposed on the side of the front panel layer 22 away from the cell layer 21, and the back film layer 26 is disposed on the side of the back panel layer 23 away from the cell layer 21. Both the front film layer 25 and the back film layer 26 are transparent structures for protecting the power generation module on the inner layer.

[0072] Preferably, the front film layer 25 and the back film layer 26 are made of fluorine-containing film materials, such as ETFE (ethylene-tetrafluoroethylene copolymer), ECTFE (ethylene-chlorotrifluoroethylene copolymer), etc.

[0073] Optionally, the front film layer 25 and the back film layer 26 are made of the same material. More preferably, the back film layer 26 is made of PET (polyester resin) with a certain mechanical strength, which can better bond the sub-generator modules in the rigid frame 24 into a whole and provide support and better edge protection.

[0074] Optionally, the front plate layer 22 and the back plate layer 23 are bonded to the battery cell layer 21 using a first packaging film 27 ; the front film layer 25 and the back film layer 26 are bonded to the power generation module using a second packaging film 28 .

[0075] Furthermore, the corresponding second packaging films 28 on the front film layer 25 and the back film layer 26 are physically embossed at high temperature to form a concave-convex surface on the front film layer 25 and the back film layer 26. On the one hand, a light-trapping structure is formed. On the other hand, the concave-convex surface can protect the inner layer structure to prevent the structure inside the solar panel from being scratched. It can also assist in limiting the battery cell layer 21 and limit the battery cell 211 to the accommodating hole 241 of the hard frame 24.

[0076] Preferably, the first packaging film 27 and the second packaging film 28 can be made of EVA plastic, POE plastic, PVB (polyvinyl butyral), TPO (thermoplastic polyolefin) or BPO (benzoyl peroxide), and the first packaging film 27 and the second packaging film 28 are both colorless and transparent structures.

[0077] Example 2:

[0078] As shown in Figure 5, the solar panel provided in this embodiment differs from that in the first embodiment in that the power generation module includes at least two sub-power generation modules, the front panel layer 22 includes at least two front panel units 221, and the back panel layer 23 includes at least two back panel units 231. The sub-power generation modules are arranged as strip structures extending laterally. Each sub-power generation module is provided with multiple solar cells 211. The front panel units 221 and back panel units 231 are correspondingly arranged as strip structures. Adjacent sub-power generation modules are arranged side by side. The number of accommodating holes 241 is equal to the number of sub-power generation modules, and the accommodating holes 241 are correspondingly arranged as side-by-side strip structures. In this embodiment, the number of sub-power generation modules and accommodating holes 241 is three.

[0079] Specifically, the power generation module is decomposed into multiple sub-power generation modules and placed one by one in the multiple accommodating holes 241 of the hard frame 24, which reduces the size of the single front panel unit 221 and the back panel unit 231. The problem that the large-sized front panel unit 221 and the back panel unit 231 are prone to bending and deformation can be solved. The front panel unit 221 and the back panel unit 231 can be compatible with more materials, such as ultra-thin glass. Small-sized ultra-thin glass has high flatness, and the rigidity of the glass itself can improve the impact resistance of the front and back sides of the battery cell, thereby improving the product's anti-bending ability.

[0080] In other embodiments, two or more self-generating modules may be disposed in the receiving hole 241 of the rigid frame 24 .

[0081] Optionally, the first encapsulation film 27 includes a plurality of sub-encapsulation films 271, each of which is configured as a long strip structure adapted to the front panel unit 221 and the back panel unit 231. The battery cell 211 and the front panel unit 221, as well as the battery cell 211 and the back panel unit 231, are bonded together via the corresponding sub-encapsulation films 271.

[0082] Example 3:

[0083] As shown in FIG6 , the solar panel provided in this embodiment differs from that in the second embodiment in that the sub-power generation modules are configured as vertically extending strip structures, and the receiving holes 241 are correspondingly configured as vertically extending strip structures arranged side by side.

[0084] Example 4:

[0085] As shown in Figure 7, the solar panel provided in this embodiment differs from that in the second embodiment in that at least four sub-generating modules are provided. The number of cells 211, the number of front panel units 221, and the number of back panel units 231 are equal to the number of self-generating modules. The sub-generating modules are arranged in a matrix, and the receiving holes 241 are arranged in a corresponding matrix arrangement. In this embodiment, there are fifteen sub-generating modules.

[0086] Specifically, each sub-power generation module includes a solar cell 211 , a front plate unit 221 and a back plate unit 231 , further reducing the size of a single front plate unit 221 and a back plate unit 231 .

[0087] Optionally, the first packaging film 27 includes multiple sub-packaging films 271 , which are distributed in a matrix. The battery cell 211 and the front panel unit 221 , and the battery cell 211 and the back panel unit 231 are bonded via corresponding sub-packaging films 271 .

[0088] Embodiment 5:

[0089] As shown in Figure 8, the difference between the solar panel provided in this embodiment and that in embodiment 1 is that the hard frame 24 is located between the front panel layer 22 and the back panel layer 23, and the front panel layer 22 and the back panel layer 23 are respectively arranged on the front and back sides of the hard frame 24 in a whole panel structure, that is, only the battery layer 21 is arranged in the accommodating hole 241, while the front panel layer 22 and the back panel layer 23 are not in the accommodating hole 241, which can also achieve the protection of the battery layer 21.

[0090] Example 6:

[0091] As shown in Figure 9, this embodiment provides a solar panel, which includes a stacked cell layer 31, a glass fiber reinforced layer 32 and two protective layers 33. The two protective layers 33 are respectively arranged on both sides of the cell layer 31, and the glass fiber reinforced layer 32 is arranged between the cell layer 31 and the protective layer 33. The glass fiber reinforced layer 32 is made of a mixture of glass fiber and impregnated rubber. The glass fiber reinforced layer 32 and the protective layer 33 are both set to transparent structures.

[0092] Specifically, the solar panel provided in this embodiment has a glass fiber reinforced layer 32 disposed between the protective layer 33 and the cell layer 31. The cell layer 31 is used to receive light and generate electricity, while the protective layer 33 protects the inner structure. The glass fiber reinforced layer 32 becomes transparent after high-temperature hot pressing. The protective layer 33 is also transparent, ensuring that light can pass through without affecting the operation of the cell layer 31. The glass fiber reinforced layer 32 is made of a mixture of glass fiber and impregnating adhesive. On the one hand, the glass fiber reinforced layer 32 can improve the impact resistance of the cell layer 31 and the bending resistance of the solar panel. On the other hand, the glass fiber and impregnating adhesive that constitute the glass fiber reinforced layer 32 have a low density, which has a minimal impact on the weight of the solar panel, ensuring the portability of the solar panel. Furthermore, the glass fiber reinforced layer 32 has a certain degree of viscosity, which can initially fix the cell layer 31 and prevent the cell layer 31 from shifting during material stacking and lamination.

[0093] Optionally, the number of glass fiber reinforced layers 32 is set to two, and the two glass fiber reinforced layers 32 are respectively arranged on both sides of the battery layer 31. The two glass fiber reinforced layers 32 respectively enhance the impact resistance of the battery layer 31 from both sides, thereby further improving the impact resistance.

[0094] Optionally, the glass fiber reinforcement layer 32 is configured as an integrated mesh structure.

[0095] Preferably, the impregnating rubber material includes at least one of EVA (ethylene vinyl acetate copolymer) plastic, POE (polymer of ethylene and butene, or polymer of ethylene and octene) plastic, and polyester resin.

[0096] Preferably, the cell layer 31 includes a plurality of double-sided crystalline silicon chips, which can receive light from both sides and generate electricity, thereby increasing the power generation of the cell layer 31 per unit weight.

[0097] Optionally, the cell layer 31 includes a plurality of cells 311, each cell 311 includes a double-sided crystalline silicon chip, and the solar panel also includes a hard frame 35. The hard frame 35 is configured as a frame structure, and a plurality of accommodating holes 351 arranged in a matrix are provided in the hard frame 35. The accommodating holes 351 are used to accommodate the cells 311. The hard frame 35 is made of a high-temperature resistant polymer material or a metal material, such as a polyimide polymer, an aromatic polyamide polymer or an aluminum alloy. The hard frame 35 can protect the cell layer 31 and protect the cell 311 from the package cross-section direction, thereby improving the impact resistance, bending resistance and mechanical strength. At the same time, it is lighter than traditional metal frames, and can reduce edge obstruction, and will not block the double-sided operation of the cell 311. When installing the solar panel, the cell 311 can be laminated after being arranged in the accommodating holes 351, eliminating the overall frame and simplifying the production.

[0098] Preferably, the thickness of the rigid frame 35 is not less than the thickness of the battery cell 311 .

[0099] Preferably, the hard frame 35 has a thickness of 0.5-3 mm and a width of 5-30 mm.

[0100] Optionally, the glass fiber reinforced layer 32 and the protective layer 33 are bonded together using a packaging film 36 .

[0101] Furthermore, the protective layer 33 and its corresponding packaging film 36 are physically embossed at high temperature to form a concave-convex surface on the protective layer 33. On the one hand, a light-trapping structure is formed. On the other hand, the concave-convex surface can protect the inner layer structure to prevent the structure inside the solar panel from being scratched. It can also assist in limiting the battery layer 31 and limit the battery cell 311 to the accommodating hole 351 of the hard frame 35.

[0102] Preferably, the protective layer 33 is made of a fluorine-containing film material, such as ETFE (ethylene-tetrafluoroethylene copolymer), ECTFE (ethylene-chlorotrifluoroethylene copolymer), and the like.

[0103] Preferably, the packaging film 36 can be made of EVA plastic, POE plastic, PVB (polyvinyl butyral), TPO (thermoplastic polyolefin) or BPO (benzoyl peroxide), and the packaging film 36 is a colorless and transparent structure.

[0104] Embodiment seven:

[0105] As shown in Figure 10, the difference between the solar panel provided in this embodiment and that in the first embodiment is that the glass fiber reinforced layer 32 includes at least two glass fiber reinforced units 321 arranged side by side, and the glass fiber reinforced units 321 are arranged as a strip mesh structure extending in the transverse direction, which reduces the difficulty of molding the glass fiber reinforced layer 32. In this embodiment, the number of glass fiber reinforced units 321 is three.

[0106] Embodiment 8:

[0107] As shown in Figure 11, the difference between the solar panel provided in this embodiment and that in the first embodiment is that the glass fiber reinforced layer 32 includes at least two glass fiber reinforced units 321 arranged side by side, and the glass fiber reinforced units 321 are arranged as a strip mesh structure extending in the longitudinal direction, which reduces the difficulty of molding the glass fiber reinforced layer 32. In this embodiment, the number of glass fiber reinforced units 321 is three.

[0108] Embodiment 9:

[0109] As shown in FIG12 , the solar panel provided in this embodiment differs from that in the first embodiment in that the solar panel further includes two bearing layers 34 , which are made of a transparent polymer material. The two bearing layers 34 are respectively arranged between the two glass fiber reinforced layers 32 and the protective layer 33 , and the bearing layers 34 are bonded to the glass fiber reinforced layers 32 and the protective layer 33 by an encapsulating film 36 . The arrangement of the bearing layers 34 can further enhance the mechanical strength of the solar panel.

[0110] Preferably, the supporting layer 34 is made of PC (polycarbonate), PET or coated PET film material, or the supporting layer 34 can also be made of a transparent flexible material with good mechanical strength such as EPE (expandable polyethylene), FPF (composite phenolic foam), KPK (double-sided fluorine-containing backboard), etc.

[0111] Preferably, the thickness of the bearing layer 34 is 0.2-1 mm.

[0112] Embodiment 10:

[0113] As shown in Figure 13, the difference between the solar panel provided in this embodiment and the embodiment 2 is that: there is only one glass fiber reinforced layer 32 and load-bearing layer 34 in the solar panel, and the glass fiber reinforced layer 32 and the load-bearing layer 34 are respectively arranged on the front and back sides of the battery layer 31, and the load-bearing layer 34 is arranged between the battery layer 31 and the protective layer 33. The load-bearing layer 34 is bonded to the hard frame 35 and the protective layer 33 by a packaging film 36.

[0114] This embodiment provides a solar panel, as shown in Figures 14 to 19, which includes a battery layer and a front panel 4300 and a back panel 4400 stacked on the front and back sides of the battery layer, respectively. The battery layer includes a hard frame 4100 and a battery string 4200. The hard frame 4100 includes a plurality of vertical frame bars 4110 and a plurality of horizontal frame bars 4120. The vertical frame bars 4110 and the horizontal frame bars 4120 are cross-connected to form a plurality of accommodating holes 4130. The battery string 4200 includes a plurality of battery cells 4201. The battery cells 4201 are placed in the accommodating holes 4130. The vertical frame bars 4110 and the horizontal frame bars 4120 are detachably connected.

[0115] Specifically, the solar panel provided in this embodiment has a rigid hard frame 4100 disposed between the front panel 4300 and the back panel 4400, and the battery string 4200 is disposed in the receiving hole 4130 of the hard frame 4100. The hard frame 4100 has a high supporting strength, which reduces the damage to the battery string 4200 caused by the bending and deformation of the solar panel, thereby protecting the battery string 4200 and improving the mechanical strength. There is no need to set more layers or add glass fiber materials, which reduces the overall weight and reduces the equipment cost. The hard frame 4100 is composed of a plurality of detachably connected vertical frame bars 4110 and horizontal frame bars 4120. Compared with an integrated frame structure, it not only has a lower production cost, but is also easy to assemble and combine in different shapes, sizes and thicknesses, and has a higher flexibility of use.

[0116] Exemplarily, the thickness of the vertical frame bars 4110 and the transverse frame bars 4120 is no less than the thickness of the cell string 4200 to enhance the surface strength of the solar panel. In this embodiment, the thickness of the vertical frame bars 4110 and the transverse frame bars 4120 is greater than the thickness of the cell string 4200 to protect the cell string 4200 from normal forces.

[0117] For example, as shown in Figures 15 and 18, multiple battery cells 4201 are distributed in a matrix, with transverse gaps 4204 provided between battery cells 4201 distributed in vertically adjacent accommodating holes 4130, and vertical gaps 4203 provided between battery cells 4201 distributed in laterally adjacent accommodating holes 4130. In this embodiment, each accommodating hole 4130 is provided with three vertically arranged battery cells 4201, and the three battery cells 4201 in the same accommodating hole 4130 constitute a sub-battery string. The number of accommodating holes 4130 is set to ten, and the ten accommodating holes 4130 are evenly distributed in two layers, that is, there is one transverse gap 4204 and eight vertical gaps 4203.

[0118] Exemplarily, as shown in FIG. 15 and FIG. 18 , the battery string 4200 further includes a welding ribbon 4202 , which electrically connects adjacent battery cells 4201 in the vertical direction. The welding ribbon 4202 is disposed in the transverse gap 4204 .

[0119] Exemplarily, the vertical frame bar 4110 includes several vertical inner frame bars 4111 and two vertical border bars 4112 arranged side by side in the horizontal direction. The vertical inner frame bar 4111 is placed in the vertical gap 4203, and the two vertical border bars 4112 are arranged side by side on the left and right sides of the vertical inner frame bar 4111. The vertical border bars 4112 are located on the left and right sides of the battery string 4200 and are used to wrap the left and right sides of the battery string 4200, thereby protecting the left and right sides of the solar panel.

[0120] Exemplarily, the transverse frame bar 4120 includes several transverse inner frame bars 4121 and at least two transverse border bars 4122 arranged side by side vertically. The transverse inner frame bar 4121 is placed in the transverse gap 4204, and the two transverse border bars 4122 are arranged side by side on the upper and lower sides of the transverse inner frame bar 4121. The transverse border bars 4122 are located on the upper and lower sides of the battery string 4200 and are used to wrap the upper and lower sides of the battery string 4200, thereby protecting the upper and lower sides of the solar panel.

[0121] In this embodiment, as shown in FIG. 16 and FIG. 19 , corresponding to the number of longitudinal gaps, the number of longitudinal inner frame bars is also set to eight, and one longitudinal inner frame bar is provided in each longitudinal gap.

[0122] For example, as shown in FIG19 , two transverse inner frame bars 4121 are provided in the transverse gap 4204. The two transverse inner frame bars 4121 are stacked and spaced apart, and the soldering ribbon 4202 is vertically passed through the gap between the two transverse inner frame bars 4121. Passing the soldering ribbon 4202 through the gap between the two transverse inner frame bars 4121 can reduce the risk of the soldering ribbon 4202 climbing up and pulling on the cell 4201 as it passes through the transverse inner frame bars 4121, causing edge damage or desoldering of the soldering ribbon 4202. At the same time, the transverse inner frame bars 4121 can shield the busbars to which the soldering ribbon 4202 is connected, giving the product a neat and orderly appearance.

[0123] For example, as shown in FIG19 , two transverse frame bars 4122 are provided on the upper and lower sides of the battery string 4200, respectively. The two transverse frame bars 4122 on the same side are stacked and spaced apart, and the soldering ribbon 4202 is vertically passed through the gap between the two transverse frame bars 4122. Passing the soldering ribbon 4202 through the gap between the two transverse frame bars 4122 can reduce the risk of the soldering ribbon 4202 climbing up and pulling on the battery cells 4201 when passing through the transverse frame bars 4122, causing edge damage or desoldering of the soldering ribbon 4202. At the same time, the transverse frame bars 4122 can shield the busbars to which the soldering ribbon 4202 is connected, giving the product a neat and orderly appearance.

[0124] In other embodiments of the present application, the horizontal gap 4204 can also be set to a single-layer horizontal inner frame bar 4121, and the horizontal border bars 4122 on the upper and lower sides of the battery string 4200 can also be provided with only a single layer. The thickness of the horizontal inner frame bar 4121 and the horizontal border bar 4122 is less than the thickness of the vertical inner frame bar 4111 and the vertical border bar 4112, so as to facilitate the climbing of the welding strip 4202 and provide space for the bus conductor.

[0125] Exemplarily, the transverse inner frame strip 4121 and the transverse border strip 4122 are both configured as long thin plate structures, and the thickness of the transverse inner frame strip 4121 and the transverse border strip 4122 are both smaller than the thickness of the vertical inner frame strip 4111 and the vertical border strip 4112 .

[0126] Exemplarily, the thickness of the horizontal inner frame strip 4121 is equal to that of the horizontal border strip 4122 ; the thickness of the vertical inner frame strip 4111 is equal to that of the vertical border strip 4112 .

[0127] Exemplarily, the thicknesses of the horizontal inner frame strip 4121 , the horizontal border strip 4122 , the vertical inner frame strip 4111 and the vertical border strip 4112 are not the same.

[0128] In this embodiment, the width of the vertical gap 4203 is 25-35 mm, and the width of the horizontal gap 4204 is 35-45 mm; the thickness of the vertical frame strip 4112 is 3 mm, and the width is 30 mm; the thickness of the vertical inner frame strip 4111 is 3 mm, and the width is 25-35 mm; the thickness of the horizontal frame strip 4122 below the welding strip 4202 is 1.2 mm, and the thickness of the horizontal frame strip 4122 above the welding strip 4202 is 1.6 mm, and the width of the horizontal frame strip 4122 is 30 mm; the thickness of the horizontal inner frame strip 4121 below the welding strip 4202 is 1.2 mm, and the thickness of the horizontal inner frame strip 4121 above the welding strip 4202 is 1.6 mm, and the width of the horizontal inner frame strip 4121 is 35-45 mm.

[0129] Illustratively, the sub-cell strings are spaced apart from the vertical frame bars 4110 and the horizontal frame bars 4120 to reduce the risk of fragmentation of the cell 4201 or inadequate lamination due to uneven local pressure caused by height differences during lamination and pressing.

[0130] For example, as shown in FIG17 , the vertical frame strip 4110 is provided with a first mortise and tenon portion 4141, and the transverse frame strip 4120 is provided with a second mortise and tenon portion 4142; and / or the vertical frame strip 4110 is provided with a second mortise and tenon portion 4142, and the transverse frame strip 4120 is provided with a first mortise and tenon portion 4141; the first mortise and tenon portion 4141 and the second mortise and tenon portion 4142 are mortise-jointed, facilitating installation and ensuring a secure connection. In other embodiments, the vertical frame strip 4110 and the transverse frame strip 4120 may also be detachably connected using other structures such as snap fasteners.

[0131] In this embodiment, as shown in Figure 17, the first mortise and tenon portion 4141 is configured as an isosceles trapezoidal protrusion, with the long bottom side of the trapezoidal protrusion facing outward, and the second mortise and tenon portion 4142 is correspondingly configured as a corresponding isosceles trapezoidal groove, with the long bottom side of the trapezoidal groove facing inward.

[0132] Exemplarily, the outer peripheries of the vertical border strip 4112 and the horizontal border strip 4122 are both provided with chamfers to reduce the stress on the edges and corners when impacted by external forces.

[0133] For example, mounting holes are provided on the vertical frame bars 4110 and / or the horizontal frame bars 4120, and fasteners passing through the mounting holes connect the front panel 4300, the back panel 4400, and / or external accessories. This replaces the adhesive-backed adhesive structure of the flexible panel, creating an air flow channel beneath the solar panel, improving the heat dissipation performance of the solar panel and thus increasing power generation efficiency. It also facilitates the connection of external accessories such as handles and brackets, improving the compactness of the structure.

[0134] Exemplarily, as shown in FIG14 , the solar panel further includes an adhesive film 4500 , and the cell layer and the front panel 4300 and / or the cell layer and the back panel 4400 are bonded and fixed by the adhesive film 4500 .

[0135] Exemplarily, the hard frame 4100 is made of a fiberboard with high mechanical strength or a metal plate with surface insulation treatment.

[0136] For example, the material of the front panel 4300 is a transparent insulating material with high mechanical toughness, such as PET (polyethylene terephthalate) and a composite material of PET.

[0137] Exemplarily, the material of the back panel 4400 is selected to be a supporting material with high mechanical toughness, such as fiberglass board, PET and a composite material of PET.

[0138] Exemplarily, the material of the adhesive film 4500 is selected from conventional photovoltaic materials, such as EVA (ethylene-vinyl acetate copolymer), POE (polyethylene octene co-elastomer), PO (propylene oxide), PVB (polyvinyl butyral), etc.

[0139] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present application. A person skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A solar panel, characterized in that: It comprises a hard frame and a battery cell. The hard frame is provided with a receiving hole, and the battery cell is arranged in the receiving hole.

2. The solar panel according to claim 1, wherein: The invention comprises a power generation component (1100) and a conductor (1200), wherein the power generation component (1100) comprises: A hard frame (11) is provided with a receiving hole; The battery sheet (12) is arranged in the accommodating hole; A back plate (13) is provided in the receiving hole and is located on the battery cell (12), and an adhesive film (1600) is provided between the back plate (13) and the battery cell (12); An insulating plate (14) covers an end surface of the hard frame (11) close to the back plate (13), and the wire (1200) is arranged between the back plate (13) and the insulating plate (14).

3. The solar panel according to claim 2, characterized in that: The solar panel further comprises a front film (1300) and a back film (1400), at least two power generation components (1100) are arranged between the front film (1300) and the back film (1400) along a first direction, and the interval between two adjacent power generation components (1100) forms a bending area (1700) on the front film (1300) and the back film (1400), and the wire (1200) is used to electrically connect the two adjacent power generation components (1100).

4. The solar panel according to claim 3, characterized in that The solar panel further comprises an insulating film (1500), the portion of the wire (1200) located in the bending area (1700) is covered with the insulating film (1500), and at least a portion of the insulating film (1500) extends between the adjacent back plate (13) and the insulating plate (14).

5. The solar panel according to claim 4, characterized in that: Both sides of the portion of the conductive line (1200) located in the bending area (1700) are covered with the insulating film (1500).

6. The solar panel according to claim 3, characterized in that The hard frame (11) is formed by detachably splicing and enclosing a plurality of edges.

7. The solar panel according to claim 6, characterized in that The solar panel further comprises a handle structure (1800), wherein two handle structures (1800) are located at both ends of at least two power generation components (1100) in the first direction.

8. The solar panel according to claim 7, characterized in that The handle structure (1800) is fixedly connected to the adjacent rigid frame (11); or The handle structure (1800) and one side of the adjacent rigid frame (11) are an integral structure.

9. The solar panel according to claim 8, characterized in that The handle structure (1800) is provided with a handle groove, and the front film (1300) and the back film (1400) are both provided with through grooves at positions corresponding to the handle grooves, and the shape of the through grooves is adapted to the shape of the handle grooves.

10. The solar panel according to claim 3, wherein: The front film (1300) is made of a transparent flexible material; and / or The back film (1400) is made of a transparent and flexible material.

11. The solar panel according to any one of claims 2 to 10, characterized in that: The power generation component (1100) further includes a front plate (15), wherein the front plate (15) covers an end surface of the hard frame (11) close to the battery cell (12); An adhesive film (1600) is provided between the front plate (15) and the hard frame (11); An adhesive film (1600) is provided between the insulating plate (14) and the hard frame (11).

12. The solar panel according to claim 1, wherein: The solar panel comprises: A hard frame (24), wherein a receiving hole (241) is provided in the hard frame (24); A battery cell layer (21), the battery cell layer (21) being disposed in the accommodating hole (241); A front plate layer (22), the front plate layer (22) being located on one side of the battery layer (21); A back plate layer (23), the back plate layer (23) is located on the other side opposite to the battery layer (21).

13. The solar panel according to claim 12, wherein: The rigid frame (24) is located between the front plate layer (22) and the back plate layer (23).

14. The solar panel according to claim 12, wherein: The front plate layer (22), the battery layer (21) and the back plate layer (23) are all located in the accommodating hole (241).

15. The solar panel according to claim 13 or 14, characterized in that: The battery cell layer (21) includes at least two battery cells (211), the front plate layer (22) includes at least two front plate units (221), the back plate layer (23) includes at least two back plate units (231), and at least two accommodating holes (241) are correspondingly provided in the hard frame (24), and each of the accommodating holes (241) is correspondingly provided with the battery cell (211), the front plate unit (221), and the back plate unit (231).

16. The solar panel according to claim 15, characterized in that The accommodating holes (241) are arranged as a strip structure extending vertically or horizontally, and two adjacent accommodating holes (241) are arranged side by side.

17. The solar panel according to claim 15, wherein: At least four accommodating holes (241) are provided, and the accommodating holes (241) are distributed in a matrix pattern.

18. The solar panel according to claim 13 or 14, characterized in that: The solar panel further comprises a front film layer (25) and a back film layer (26), wherein the front film layer (25) is arranged on a side of the front plate layer (22) away from the cell layer (21), and the back film layer (26) is arranged on a side of the back plate layer (23) away from the cell layer (21).

19. The solar panel according to claim 18, wherein: The front film layer (25) and the back film layer (26) are provided with a concave-convex surface formed by high-temperature physical embossing to form a light-trapping structure. The concave-convex surface can protect the inner layer structure and assist in limiting the battery layer (21).

20. The solar panel according to claim 13 or 14, characterized in that: The thickness of the hard frame (24) is not less than the thickness of the battery layer (21).

21. The solar panel according to claim 20, characterized in that The hard frame (24) is made of high-temperature resistant polymer material or metal material.

22. The solar panel according to claim 18, wherein: The cell layer (21) comprises a plurality of double-sided crystalline silicon chips, and the front plate layer (22), the back plate layer (23), the front film layer (25) and the back film layer (26) are all transparent structures.

23. The solar panel according to claim 1, wherein: The solar panel comprises a stacked battery layer (31), a glass fiber reinforcement layer (32) and two protective layers (33), wherein the two protective layers (33) are respectively arranged on both sides of the battery layer (31), and the glass fiber reinforcement layer (32) is arranged between the battery layer (31) and the protective layer (33). The glass fiber reinforcement layer (32) is made of a mixture of glass fiber and impregnated rubber, and the glass fiber reinforcement layer (32) and the protective layer (33) are both arranged as transparent structures.

24. The solar panel according to claim 23, wherein: The number of the glass fiber reinforced layers (32) is set to two, and the two glass fiber reinforced layers (32) are respectively arranged on both sides of the battery layer (31).

25. The solar panel according to claim 24, wherein: The glass fiber reinforcement layer (32) is configured as an integrated mesh structure; or The glass fiber reinforced layer (32) comprises at least two glass fiber reinforced units (321) arranged side by side, and the glass fiber reinforced units (321) are arranged as a strip-shaped mesh structure extending in the transverse direction or the longitudinal direction.

26. The solar panel according to claim 23, wherein: The impregnating rubber material includes at least one of EVA plastic, POE plastic, and polyester resin.

27. The solar panel according to claim 23, wherein: The solar panel further comprises a bearing layer (34), wherein the bearing layer (34) is made of a transparent polymer material, and the bearing layer (34) is arranged between the cell layer (31) and the protective layer (33), and / or the bearing layer (34) is arranged between the glass fiber reinforced layer (32) and the protective layer (33).

28. The solar panel according to claim 23, wherein: The battery cell layer (31) includes a plurality of battery cells (311), and the hard frame (35) is configured as a frame structure.

29. The solar panel according to claim 28, wherein: The thickness of the hard frame (35) is not less than the thickness of the battery sheet (311).

30. The solar panel according to any one of claims 23 to 29, characterized in that: The protective layer (33) is provided with a concave-convex surface formed by high-temperature physical embossing to form a light-trapping structure. The concave-convex surface can protect the inner layer structure and assist in limiting the position of the battery layer (31).

31. The solar panel according to any one of claims 23 to 29, characterized in that: The cell layer (31) comprises a plurality of double-sided crystalline silicon chips, which are capable of receiving light from both sides and generating electricity.

32. The solar panel according to any one of claims 23 to 29, wherein: The glass fiber reinforcement layer (32) and the protective layer (33) are bonded together using a packaging adhesive film (36).

33. The solar panel according to claim 1, wherein: The solar panel includes a battery layer and a front plate (4300) and a back plate (4400) stacked on the front and back sides of the battery layer, respectively. It is characterized in that the battery layer includes a hard frame (4100) and a battery string (4200), the hard frame (4100) includes a plurality of vertical frame bars (4110) and a plurality of horizontal frame bars (4120), the vertical frame bars (4110) and the horizontal frame bars (4120) are cross-connected to form a plurality of accommodating holes (4130), the battery string (4200) includes a plurality of battery cells (4201), the battery cells (4201) are placed in the accommodating holes (4130), and the vertical frame bars (4110) and the horizontal frame bars (4120) are detachably connected.

34. The solar panel according to claim 33, wherein: The vertical frame strip (4110) includes a plurality of vertical inner frame strips (4111) and two vertical border strips (4112) arranged side by side in a horizontal direction, and the two vertical border strips (4112) are arranged side by side on the left and right sides of the vertical inner frame strip (4111); and / or The transverse frame strip (4120) includes a plurality of transverse inner frame strips (4121) and at least two transverse side frame strips (4122) arranged side by side in the vertical direction, and the transverse side frame strips (4122) are arranged side by side on the upper and lower sides of the transverse inner frame strip (4121).

35. The solar panel according to claim 34, wherein: The plurality of battery cells (4201) are distributed in a matrix, and transverse gaps (4204) are provided between the battery cells (4201) distributed in the vertically adjacent accommodating holes (4130), and the transverse inner frame strips (4121) are placed in the transverse gaps (4204); A vertical gap (4203) is provided between the battery sheets (4201) distributed in the adjacent accommodating holes (4130) in the transverse direction, and the vertical inner frame strip (4111) is placed in the vertical gap (4203).

36. The solar panel according to claim 35, characterized in that The battery string (4200) further includes a welding ribbon (4202), wherein the welding ribbon (4202) electrically connects the adjacent battery cells (4201) in the vertical direction, and the welding ribbon (4202) is arranged in the transverse gap (4204).

37. The solar panel according to claim 36, characterized in that Two transverse inner frame strips (4121) are provided in the transverse gap (4204), the two transverse inner frame strips (4121) are stacked and spaced apart, and the welding strip (4202) is vertically passed through the gap between the two transverse inner frame strips (4121).

38. The solar panel according to claim 33, wherein: The vertical frame strip (4110) is provided with a first mortise and tenon portion (4141), and the horizontal frame strip (4120) is provided with a second mortise and tenon portion (4142); and / or The second mortise and tenon portion (4142) is provided on the vertical frame strip (4110), and the first mortise and tenon portion (4141) is provided on the horizontal frame strip (4120); The first mortise and tenon portion (4141) and the second mortise and tenon portion (4142) are mortise and tenon connected.

39. The solar panel according to claim 38, wherein: The first mortise and tenon portion (4141) is configured as a trapezoidal protrusion with the long bottom side of the trapezoidal protrusion facing outward, and the second mortise and tenon portion (4142) is correspondingly configured as a corresponding trapezoidal groove with the long bottom side of the trapezoidal groove facing inward.

40. The solar panel according to any one of claims 33 to 39, characterized in that: The thickness of the vertical frame bar (4110) and the horizontal frame bar (4120) are not less than the thickness of the battery string (4200).

41. The solar panel according to any one of claims 33 to 39, wherein: The vertical frame bar (4110) and / or the horizontal frame bar (4120) are provided with mounting holes, and the front panel (4300), the back panel (4400) and / or external accessories are connected by fasteners passing through the mounting holes.

42. The solar panel according to any one of claims 33 to 39, wherein: The solar panel further comprises an adhesive film (4500), and the battery layer and the front panel (4300) and / or the battery layer and the back panel (4400) are bonded and fixed via the adhesive film (4500).

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