Composite material pressing block, preparation method and photovoltaic pressing block assembly

Abstract

The invention discloses a composite material pressing block, a preparation method and a photovoltaic pressing block assembly, and belongs to the technical field of photovoltaic assemblies, the weight content of a glass fiber product is 50-80%, and the weight content of resin is 20-50%. Through the mode, the multi-group multi-axial composite felt cloth is matched with a small amount of continuous chopped fiber pultrusion, the arrangement of transverse continuous fibers is emphatically reinforced, the interlaminar shear strength of the continuous fibers is improved, and meanwhile, the transverse shear strength of the composite material pressing block is improved.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic module technology, specifically to composite material briquettes, preparation methods, and photovoltaic briquette modules. Background Technology

[0002] In existing technologies, polyurethane composite materials have high volume resistivity and good insulation properties. Module systems using composite material blocks and frames can block the conduction of current from the cells to the fixed blocks, effectively preventing arcing and combustion. This makes them very suitable for use in photovoltaic power stations in areas with high explosion-proof requirements, such as gas stations and petrochemical plants. Conventional polyurethane pultruded composite profiles, because their fibers are mainly arranged longitudinally, cannot withstand the loads in both directions of the module if directly made into blocks, causing tearing at the right angles of the blocks.

[0003] Among the many existing technologies, Chinese patent application CN217428034U discloses an adjustable edge clamp for photovoltaic module installation, including: a first clamp, a second clamp and fasteners. The first clamp has a pressure plate on one side and a first snap-fit ​​part on the other side. The second clamp has multiple second snap-fit ​​parts at different heights on one side.

[0004] However, the addition of a snap-fit ​​part to limit and fix the end of the pressure block in this patented technology still has limitations, including a limited thickness that can be adapted to, and the pressure block material does not have a power-off function.

[0005] Furthermore, existing composite material blocks are generally polyurethane pultruded composite profiles. Due to the process characteristics, the fibers of polyurethane pultruded composite profiles are mainly arranged longitudinally (along the pultrusion direction), resulting in relatively small transverse bending and shear strength of the product. Pultruded products exhibit anisotropy. If they are directly made into blocks, due to the stress characteristics of the components, the loads transmitted to the blocks are mainly in the positive and negative directions along the transverse direction of the blocks. Large interlaminar shear forces will be generated in the middle of the main stress-bearing part of the blocks (right-angle turning area). The interlaminar shear strength of conventional pultruded products is relatively small (about 50MPa), causing tearing or delamination at the right angle of the blocks (the main stress-bearing part).

[0006] Based on this, the present invention designs a composite material briquette, a preparation method thereof, and a photovoltaic briquette assembly to solve the above problems. Summary of the Invention

[0007] In view of the above-mentioned shortcomings of the prior art, the present invention provides composite material briquettes, preparation methods, and photovoltaic briquette modules.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A composite material briquette comprises glass fiber products and resin; the glass fiber products have a weight content of 50-80% and the resin has a weight content of 20-50%.

[0010] Furthermore, the glass fiber product comprises one or more fabrics selected from glass fiber multiaxial fabric, woven fabric, stitch-woven mat, composite mat, and continuous mat; wherein the non-longitudinal glass fiber in the glass fiber product accounts for 30-90% by weight.

[0011] Furthermore, the cross-section is formed by laying glass fiber products layer by layer, and the corners of the cross-section are formed by tightly fitting multiple layers of composite material fabric, without any unidirectional continuous glass fibers for bundling between the multiple layers of composite material fabric.

[0012] Furthermore, the resin is one or more of polyurethane resin, epoxy resin, unsaturated resin, acrylic resin, vinyl resin, and nylon.

[0013] A method for preparing a composite material briquette includes the following steps:

[0014] Step 1: Design and manufacture the assembly molding mold according to the shape of the composite photovoltaic briquette, and manufacture the porous pre-formed guide plate;

[0015] Step 2: According to the design of the pressing block, lay the pre-cut glass fiber fabric layer by layer through the pre-formed guide plate and mold, and connect it with the traction belt;

[0016] Step 3: Prepare the mixture, which contains resin and release agent.

[0017] Step 4: Heat the assembly mold to 90-280℃;

[0018] Step 5: The glass fiber fabric and resin mixture are fully mixed by resin impregnation tank or mold pressure injection. Under the traction action of the traction machine, the glass fiber fabric passes through the pre-forming guide plate and the combined molding mold. In the heated combined molding mold, the resin reacts and changes from liquid to solid to form a composite material. It is then continuously pulled to form a continuous profile with a constant cross section. The traction speed is 0.05-1.5m / min.

[0019] Step 6: After the surface of the cured continuous profile is polished or plasma treated, it is cut into the length of the composite photovoltaic block and holes are drilled according to the design requirements. Alternatively, the cured continuous profile can be directly cut into the length of the composite photovoltaic block and holes are drilled according to the design requirements.

[0020] Step 7: Apply a paint film to the surface of the composite material briquettes and dry them to obtain composite photovoltaic briquettes.

[0021] Furthermore, the thickness of the polyurethane waterborne coating is controlled at 20-100μm.

[0022] A photovoltaic bridging module containing composite material bridging blocks includes photovoltaic edge bridging blocks and a bridging block locking mechanism for straightening and locking the photovoltaic edge bridging blocks.

[0023] The photovoltaic edge pressure block includes a composite material pressure block; the bottom of the composite material pressure block is provided with a sliding groove, which is connected to the pressure block locking mechanism. The composite material pressure block is composed of two horizontal plates and one vertical plate. The left horizontal plate is located at the lower end of the vertical plate, and the right horizontal plate is located at the upper end of the vertical plate. The connection between the two horizontal plates and the vertical plate is at a right angle, and the two horizontal plates and the vertical plate are an integral structure.

[0024] Furthermore, the lower right end of the horizontal plate on the right side of the composite material block is configured as a hook shape, and the lower left end of the horizontal plate on the left side of the composite material block is configured as a protrusion shape.

[0025] Furthermore, the length of the composite material pressing block vertical plate is set to sixty to eighty millimeters, and the thickness of the composite material pressing block is set to five to seven millimeters.

[0026] Furthermore, the length of the composite material pressing block vertical plate is set to seventy millimeters, and the thickness of the composite material pressing block is set to six millimeters.

[0027] Furthermore, the pressure block locking mechanism includes a bolt, a first nut, a second nut, a pressing block, a connecting plate, and an elastic locking block;

[0028] The bolt is slidably connected to the inner wall of the groove. The bolt passes through nut one, and the bottom of the bolt abuts against the inner wall of the extrusion block. Nut one is threadedly connected to the inner wall of nut two. Nut one abuts against the upper outer arc surface of the extrusion block. The lower end of the extrusion block is hinged to the connecting plate. The lower part of the connecting plate is fixedly connected to nut two. The elastic locking block is fixedly installed on the inner wall of the extrusion block. The outer wall of the bolt has a groove for engaging with the elastic locking block.

[0029] Compared with the prior art, the beneficial effects of this invention are as follows: 1. This invention uses multiple sets of multiaxial composite felt cloth combined with a small amount of continuous short-cut fiber pultrusion to focus on strengthening the transverse continuous fiber arrangement, improving the interlaminar shear strength of the continuous fiber, and at the same time improving the transverse shear strength of the composite material block.

[0030] 2. In use, the composite material block is placed between the frame and the bracket of the external photovoltaic module. The composite material block is fixed and locked to the edge of the frame by the sliding groove and the block locking mechanism, and the composite material block is straightened and placed in a horizontal position to achieve the stability of the composite material block installation. The composite material block uses a current composite material that can block the conduction of current to the composite material block, effectively avoiding the occurrence of arcing and burning. At the same time, multiple sets of multi-directional fiber cloth are used in conjunction with non-longitudinal fiber cloth extrusion to strengthen the transverse fiber arrangement, ensuring the transverse strength of the block and effectively bearing the loads in both directions of the photovoltaic module, avoiding tearing at the right angle of the composite material block. At the same time, the opening position of the sliding groove ensures that the block locking mechanism is not exposed on the upper surface of the composite material block, which can effectively prevent current from passing through the surface of the composite material block.

[0031] 3. When using this invention, the composite material block is fixed at the corner of the outer frame. The hook at the end of the composite material block can effectively restrict the connection with the frame and prevent the composite material block from slipping due to excessive deformation of the frame. The load requirement range of the outer frame is -2400Pa and +4800Pa. In order to adapt to the load range, the length and thickness of the composite material block need to be limited. The length of 70 mm and the thickness of 6 mm can control the deformation of the composite material block itself without causing damage under stress. This not only provides good support for the outer frame, but also avoids the risk of the outer photovoltaic module glass breaking due to excessive rigidity.

[0032] 4. When using this invention, the composite material block is placed in the position to be fixed in the external photovoltaic module. The bolt is passed through nut one and then inserted into the interior of the composite material block along the slide groove. At the same time, the bolt drives nut one and nut two to move. Rotating nut one causes nut one to move down in nut two through the thread. Nut one drives the four sets of extrusion blocks in a dispersed state to tighten towards the axis of the bolt until the extrusion blocks squeeze the bolt to keep the bolt in a vertical state. At the same time as the extrusion blocks tighten, the elastic locking block is engaged with the groove position, causing the bolt to move up as a whole and abut against the top of the slide groove, thereby supporting the composite material block and keeping the composite material block in a horizontal state. At the same time, the elastic locking block restricts and locks the bolt. When the lower end of the composite material block is in a suspended state, it works in conjunction with the connection between the right side of the composite material block and the external frame to provide stable support for the composite material block.

[0033] 5. When using this invention, the rectangular nut can be inserted along the T-slot of the external bracket with its short side, and then rotated so that its long side is supported on the bracket to fix its position; the two sets of elastic blocks limit the bolt from both sides, making the bolt more stable. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0035] Figure 1 This is a schematic diagram of the composite felt structure;

[0036] Figure 2 Schematic diagram of the composite felt passing through the combined molding die and the porous preformed guide plate. Figure 1 ;

[0037] Figure 3 Schematic diagram of the composite felt passing through the combined molding die and the porous preformed guide plate. Figure 2 ;

[0038] Figure 4 The three-dimensional structure of the photovoltaic compaction module of the present invention Figure 1 ;

[0039] Figure 5 This is a front view of the photovoltaic compaction module of the present invention;

[0040] Figure 6 The three-dimensional structure of the photovoltaic compaction module of the present invention Figure 2 ;

[0041] Figure 7 For along Figure 5 A three-dimensional image with a portion removed along the AA direction;

[0042] Figure 8 This is a partial perspective view of the photovoltaic compaction module of the present invention;

[0043] Figure 9 This is a schematic diagram of another shape of composite material compression block;

[0044] Figure 10 This is a cross-sectional view of the composite material compact.

[0045] The labels in the diagram represent:

[0046] 1. Photovoltaic edge pressing block; 11. Composite material pressing block; 12. Slide groove; 2. Pressing block locking mechanism; 21. Bolt; 22. Nut 1; 23. Nut 2; 24. Extrusion block; 25. Connecting plate; 26. Elastic locking block; 27. Groove; 3. Combination molding mold; 4. Multi-hole preformed guide plate. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0048] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0049] Example 1:

[0050] A composite material briquette comprises glass fiber products and resin; the glass fiber products have a weight content of 50-80% and the resin has a weight content of 20-50%.

[0051] Fiberglass products comprise one or more fabrics selected from multiaxial fiberglass fabric, woven fabric, stitch-woven mat, composite mat, and continuous mat; wherein the non-longitudinal fiber content in the fiberglass product is 30-90% by weight.

[0052] like Figure 10 As shown, the cross-section is formed by laying glass fiber products layer by layer, and the corners of the cross-section are formed by tightly adhering multiple layers of composite material fabric. There are no unidirectional continuous glass fibers for bundling between the multiple layers of composite material fabric.

[0053] The resin is one or more of polyurethane resin, epoxy resin, unsaturated resin, acrylic resin, vinyl resin, and nylon.

[0054] A method for preparing a composite material briquette includes the following steps:

[0055] Step 1: Design and manufacture the combined molding mold 3 according to the shape of the composite photovoltaic briquette, and manufacture the porous pre-formed guide plate 4;

[0056] Step 2: According to the design of the pressing block, lay the pre-cut glass fiber fabric layer by layer through the pre-formed guide plate and mold, and connect it with the traction belt;

[0057] Step 3: Prepare the mixture, which contains resin and release agent.

[0058] Step 4: Heat the assembly mold 3 to 150℃;

[0059] Step 5: The glass fiber fabric and resin mixture are fully mixed by means of resin impregnation tank or mold pressure injection. Under the traction action of the traction machine, the glass fiber fabric passes through the pre-forming guide plate and the combined molding mold 3. In the heated combined molding mold 3, the resin reacts from liquid to solid and forms a composite material, which is continuously pulled to form a continuous profile with a constant cross section. The traction speed is 0.05m / min.

[0060] Step 6: After the surface of the cured continuous profile is polished or plasma treated, it is cut into the length of the composite photovoltaic block and holes are drilled according to the design requirements. Alternatively, the cured continuous profile can be directly cut into the length of the composite photovoltaic block and holes are drilled according to the design requirements.

[0061] Step 7: Apply a paint film to the surface of the composite material briquettes and dry them to obtain composite photovoltaic briquettes.

[0062] The paint film is a polyurethane water-based coating, and the film thickness is controlled at 100μm.

[0063] Example 2

[0064] A composite material briquette comprises glass fiber products and resin; the glass fiber products have a weight content of 50-80% and the resin has a weight content of 20-50%.

[0065] Fiberglass products comprise one or more fabrics selected from multiaxial fiberglass fabric, woven fabric, stitch-woven mat, composite mat, and continuous mat; wherein the non-longitudinal fiber content in the fiberglass product is 30-90% by weight.

[0066] The cross section is made of layers of glass fiber products, and the corners of the cross section are made of multiple layers of composite material fabric tightly attached together. There are no unidirectional continuous glass fibers for bundling between the multiple layers of composite material fabric.

[0067] The resin is one or more of polyurethane resin, epoxy resin, unsaturated resin, acrylic resin, vinyl resin, and nylon.

[0068] A method for preparing a composite material briquette includes the following steps:

[0069] Step 1: Design and manufacture the combined molding mold 3 according to the shape of the composite photovoltaic briquette, and manufacture the porous pre-formed guide plate 4;

[0070] Step 2: According to the design of the pressing block, lay the pre-cut glass fiber fabric layer by layer through the pre-formed guide plate and mold, and connect it with the traction belt;

[0071] Step 3: Prepare the mixture, which contains resin and release agent.

[0072] Step 4: Heat the assembly mold 3 to 280℃;

[0073] Step 5: The glass fiber fabric and resin mixture are fully mixed by resin impregnation tank or mold pressure injection. Under the traction action of the traction machine, the glass fiber fabric passes through the pre-forming guide plate and the combined molding mold 3. In the heated combined molding mold 3, the resin reacts from liquid to solid and forms a composite material, which is continuously pulled to form a continuous profile with a constant cross section. The traction speed is 0.5m / min.

[0074] Step 6: After the surface of the cured continuous profile is polished or plasma treated, it is cut into the length of the composite photovoltaic block and holes are drilled according to the design requirements. Alternatively, the cured continuous profile can be directly cut into the length of the composite photovoltaic block and holes are drilled according to the design requirements.

[0075] Step 7: Apply a paint film to the surface of the composite material briquettes and dry them to obtain composite photovoltaic briquettes.

[0076] The paint film is a polyurethane water-based coating, and the film thickness is controlled at 20μm.

[0077] Example 3

[0078] A composite material briquette comprises glass fiber products and resin; the glass fiber products have a weight content of 50-80% and the resin has a weight content of 20-50%.

[0079] Fiberglass products comprise one or more fabrics selected from multiaxial fiberglass fabric, woven fabric, stitch-woven mat, composite mat, and continuous mat; wherein the non-longitudinal fiber content in the fiberglass product is 30-90% by weight.

[0080] The cross section is made of layers of glass fiber products, and the corners of the cross section are made of multiple layers of composite material fabric tightly attached together. There are no unidirectional continuous glass fibers for bundling between the multiple layers of composite material fabric.

[0081] The resin is one or more of polyurethane resin, epoxy resin, unsaturated resin, acrylic resin, vinyl resin, and nylon.

[0082] A method for preparing a composite material briquette includes the following steps:

[0083] Step 1: Design and manufacture the combined molding mold 3 according to the shape of the composite photovoltaic briquette, and manufacture the porous pre-formed guide plate 4;

[0084] Step 2: According to the design of the pressing block, lay the pre-cut glass fiber fabric layer by layer through the pre-formed guide plate and mold, and connect it with the traction belt;

[0085] Step 3: Prepare the mixture, which contains resin and release agent.

[0086] Step 4: Heat the assembly mold 3 to 190℃;

[0087] Step 5: The glass fiber fabric and resin mixture are fully mixed by resin impregnation tank or mold pressure injection. Under the traction action of the traction machine, the glass fiber fabric passes through the pre-forming guide plate and the combined molding mold 3. In the heated combined molding mold 3, the resin reacts from liquid to solid and forms a composite material, which is continuously pulled to form a continuous profile with a constant cross section. The traction speed is 1.2m / min.

[0088] Step 6: After the surface of the cured continuous profile is polished or plasma treated, it is cut into the length of the composite photovoltaic block and holes are drilled according to the design requirements. Alternatively, the cured continuous profile can be directly cut into the length of the composite photovoltaic block and holes are drilled according to the design requirements.

[0089] Step 7: Apply a paint film to the surface of the composite material briquettes and dry them to obtain composite photovoltaic briquettes.

[0090] The paint film is a polyurethane water-based coating, and the film thickness is controlled at 80μm.

[0091] The performance of the composite material briquettes from Examples 1-3 and conventional products was tested, and the test results are shown in the table below:

[0092]

[0093] This invention employs multiple sets of multiaxial composite felt fabrics combined with a small amount of continuous short-cut fibers through pultrusion, focusing on strengthening the transverse continuous fiber arrangement, improving the interlaminar shear strength of the continuous fibers, and simultaneously improving the transverse shear strength of the composite material block.

[0094] Example 4

[0095] Please refer to the accompanying drawings in the instruction manual. Figures 4-9 A photovoltaic bridging module includes a photovoltaic edge bridging block 1 and a bridging locking mechanism 2 for straightening and locking the photovoltaic edge bridging block 1.

[0096] The photovoltaic edge pressure block 1 includes a composite material pressure block 11; the bottom of the composite material pressure block 11 is provided with a sliding groove 12, which is connected to the pressure block locking mechanism 2. The composite material pressure block 11 is composed of two horizontal plates and one vertical plate. The left horizontal plate is located at the lower end of the vertical plate, and the right horizontal plate is located at the upper end of the vertical plate. The connection between the two horizontal plates and the vertical plate is at a right angle, and the two horizontal plates and the vertical plate are an integral structure.

[0097] In use, the composite material pressure block 11 is placed between the frame and the bracket of the external photovoltaic module. The composite material pressure block 11 is fixed and locked to the edge of the frame by the sliding groove 12 and the pressure block locking mechanism 2, and the composite material pressure block 11 is straightened and placed in a horizontal position to achieve the stability of the installation of the composite material pressure block 11. The composite material used in the composite material pressure block 11 can block the conduction of current to the composite material pressure block 11, effectively avoiding the occurrence of arcing and burning. At the same time, multiple sets of multi-directional fiber cloth are used in conjunction with non-longitudinal fiber cloth extrusion to strengthen the transverse fiber arrangement, ensuring the transverse strength of the pressure block and effectively bearing the load in both directions of the photovoltaic module, avoiding tearing at the right angle of the composite material pressure block 11. At the same time, the opening position of the sliding groove 12 ensures that the pressure block locking mechanism 2 is not exposed on the upper surface of the composite material pressure block 11, which can effectively prevent current from passing through the surface of the composite material pressure block 11.

[0098] The lower right end of the horizontal plate on the right side of the composite material pressure block 11 is configured as a hook shape, and the lower left end of the horizontal plate on the left side of the composite material pressure block 11 is configured as a protrusion shape.

[0099] When the present invention is used, the composite material pressure block 11 is fixed at the corner of the outer frame. The hook at the end of the composite material pressure block 11 can effectively restrict the connection with the frame and prevent the composite material pressure block 11 from slipping off due to excessive deformation of the frame.

[0100] The length of the vertical plate of the composite material pressure block 11 is set to sixty to eighty millimeters, and the thickness of the composite material pressure block 11 is set to five to seven millimeters.

[0101] The length of the vertical plate of the composite material pressure block 11 is set to seventy millimeters, and the thickness of the composite material pressure block 11 is set to six millimeters.

[0102] When using this invention, the load requirement range for the outer frame is -2400Pa and +4800Pa. To adapt to the load range, the length and thickness of the composite material pressure block 11 need to be limited. The 70 mm length and 6 mm thickness, under the premise of not being damaged by force, control the deformation of the composite material pressure block 11 itself, which not only provides good support for the outer frame, but also avoids the risk of the outer photovoltaic module glass breaking due to excessive rigidity.

[0103] The pressure block locking mechanism 2 includes a bolt 21, a first nut 22, a second nut 23, a pressing block 24, a connecting plate 25, and an elastic locking block 26. The bolt 21 is slidably connected to the inner wall of the slide groove 12, the bolt 21 passes through the first nut 22, the bottom of the bolt 21 abuts against the inner wall of the pressing block 24, the first nut 22 is threadedly connected to the inner wall of the second nut 23, the first nut 22 abuts against the upper outer arc surface of the pressing block 24, the lower end of the pressing block 24 is hinged to the connecting plate 25, the lower part of the connecting plate 25 is fixedly connected to the second nut 23, the elastic locking block 26 is fixedly installed on the inner wall of the pressing block 24, and the outer wall of the bolt 21 is provided with a groove 27 for engaging with the elastic locking block 26. The pressing block 24 is provided in four sets and is evenly distributed around the axis of the connecting plate 25.

[0104] In use, the composite material pressure block 11 is placed in the desired position within the external photovoltaic module. A bolt 21 is passed through a nut 22 and then inserted into the composite material pressure block 11 along the groove 12. Simultaneously, the bolt 21 moves the nuts 22 and 23. Rotating the nut 22 causes it to move downwards within the nut 23 via its thread. The nut 22 causes the four sets of dispersible compression blocks 24 to tighten towards the axis of the bolt 21 until the compression blocks 24 compress the bolt 21, keeping it vertical. Simultaneously, the elastic locking block 26 engages with the groove 27, causing the bolt 21 to move upwards and contact the top of the groove 12, thus supporting the composite material pressure block 11 and maintaining its horizontal position. The elastic locking block 26 also locks and restricts the bolt 21. When the lower end of the composite material pressure block 11 is suspended, the connection between the right side of the composite material pressure block 11 and the external frame provides stable support.

[0105] The upper end of the second nut 23 is set as a rectangular block.

[0106] When using this invention, the short side of the rectangular nut 23 can be inserted along the T-slot of the external bracket, and then the nut 23 can be rotated so that its long side is supported on the bracket to achieve a fixed position.

[0107] The elastic locking blocks 26 are provided in two sets and are symmetrically distributed along the center of the bolt 21.

[0108] When this invention is used, two sets of elastic blocks 26 limit the bolt 21 from both sides, making the bolt 21 more stable.

[0109] Example 2: In some embodiments, such as Figure 6As shown, in a preferred embodiment of the present invention, the composite material pressure block 11 is composed of three horizontal plates and two vertical plates forming an integral structure. The horizontal plates on both sides are located at the upper end of the vertical plates, and the horizontal plate in the middle is located at the lower end of the vertical plates. The connection points between the horizontal plates and the vertical plates are all right angles. The ends of the horizontal plates on both sides that are close to each other are respectively connected to the two vertical plates, and the two ends of the horizontal plate in the middle are respectively connected to the two vertical plates.

[0110] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A composite material briquette, characterized in that, It comprises fiberglass products and resin; the fiberglass products contain 50-80% by weight and the resin contains 20-50% by weight.

2. The composite material briquette according to claim 1, characterized in that, Fiberglass products comprise one or more fabrics selected from multiaxial fiberglass fabric, woven fabric, stitch-woven mat, composite mat, and continuous mat; wherein the non-longitudinal fiber content in the fiberglass product is 30-90% by weight.

3. The composite material briquette according to claim 1 or 2, characterized in that, The composite material briquettes are designed with a uniform cross-section, which is made of layers of glass fiber products. At least one section bend is made of multiple layers of composite material fabric tightly attached together. There are no unidirectional continuous glass fibers for bundling between the multiple layers of composite material fabric.

4. The composite material briquette according to claim 1, characterized in that, The resin is one or more of polyurethane resin, epoxy resin, unsaturated resin, acrylic resin, vinyl resin, and nylon.

5. A method for preparing a composite material compact as described in claim 1, characterized in that, Includes the following steps: Step 1: Design and manufacture the combined molding mold (3) according to the shape of the composite photovoltaic briquette, and manufacture the porous preformed guide plate (4); Step 2: According to the design of the pressing block, lay the pre-cut glass fiber fabric layer by layer through the pre-formed guide plate and mold, and connect it with the traction belt; Step 3: Prepare the mixture, which contains resin and release agent; Step 4: Combine the molding mold (3) and heat it to 90-280℃; Step 5: By using a resin impregnation tank or mold pressure injection, the glass fiber fabric and resin mixture are fully mixed under the traction action of the traction machine. The glass fiber fabric passes through the pre-forming guide plate and the combined molding mold (3). In the heated combined molding mold (3), the resin reacts from liquid to solid and forms a composite material. It is then continuously pulled to form a continuous profile with a constant cross section. The traction speed is 0.05-1.5m / min. Step 6: After the surface of the cured continuous profile is polished or plasma treated, it is cut into the length of the composite photovoltaic block and holes are drilled according to the design requirements. Alternatively, the cured continuous profile can be directly cut into the length of the composite photovoltaic block and holes are drilled according to the design requirements. Step 7: If surface painting is required, apply a paint film to the surface of the composite material block, and obtain the composite photovoltaic block after drying.

6. A photovoltaic briquette assembly comprising a composite material briquette according to any one of claims 1-4 or a composite material briquette prepared according to the method of claim 5, comprising a photovoltaic edge briquette (1), characterized in that: It also includes a block locking mechanism (2) for straightening and locking the photovoltaic edge block (1). The photovoltaic edge pressure block (1) includes a composite material pressure block (11); the bottom of the composite material pressure block (11) is provided with a sliding groove (12), the sliding groove (12) is connected to the pressure block locking mechanism (2), the composite material pressure block (11) is composed of two horizontal plates and one vertical plate, the left horizontal plate is located at the lower end of the vertical plate, the right horizontal plate is located at the upper end of the vertical plate, the connection between the two horizontal plates and the vertical plate is a right angle, and the two horizontal plates and the vertical plate are an integral structure.

7. The photovoltaic briquetted module according to claim 6, characterized in that, The lower right end of the horizontal plate on the right side of the composite material block (11) is configured as a hook shape, and the lower left end of the horizontal plate on the left side of the composite material block (11) is configured as a protrusion shape.

8. The photovoltaic briquetted module according to claim 7, characterized in that, The length of the vertical plate of the composite material block (11) is set to sixty to eighty millimeters, and the thickness of the composite material block (11) is set to five to seven millimeters.

9. The photovoltaic briquetted module according to claim 8, characterized in that, The length of the vertical plate of the composite material pressure block (11) is set to seventy millimeters, and the thickness of the composite material pressure block (11) is set to six millimeters.

10. The photovoltaic briquetted module according to claim 9, characterized in that, The pressure block locking mechanism (2) includes a bolt (21), a nut one (22), a nut two (23), a pressing block (24), a connecting plate (25), and an elastic locking block (26). The bolt (21) is slidably connected to the inner wall of the groove (12), the bolt (21) passes through the nut (22), the bottom of the bolt (21) abuts against the inner wall of the extrusion block (24), the nut (22) is threadedly connected to the inner wall of the nut (23), the nut (22) abuts against the upper outer arc surface of the extrusion block (24), the lower end of the extrusion block (24) is hinged to the connecting plate (25), the lower part of the connecting plate (25) is fixedly connected to the nut (23), the elastic block (26) is fixedly installed on the inner wall of the extrusion block (24), and the outer wall of the bolt (21) is provided with a groove (27) for engaging with the elastic block (26).

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