A wireless grounding device and grounding method for photovoltaic modules

Abstract

This invention provides a wireless grounding device and method for photovoltaic modules, including multiple horizontally arranged aluminum alloy rails, multiple longitudinally inclined aluminum alloy main beams, multiple vertically arranged aluminum alloy legs, and steel grounding spikes. The top surface of the aluminum alloy rails is connected to the bottom surface of the photovoltaic module frame via spiked grounding plates, which pierce the oxide film of the photovoltaic module frame and the aluminum alloy rails. The top surface of the aluminum alloy main beams is connected to the bottom surface of the aluminum alloy rails via spiked rail clamping blocks, which pierce the oxide film of the aluminum alloy rails and the aluminum alloy main beams. Self-tapping screws pierce the oxide film between the adapter and the aluminum alloy main beams. The top surface of the steel grounding spikes is connected to the bottom surface of the aluminum alloy legs via bases. The bottom end of the steel grounding spikes is inserted into the ground. This wireless grounding device allows the photovoltaic module to quickly conduct current to the ground surface without additional wires when struck by lightning, providing good conductivity and a high safety factor.

Description

[Technical Field]

[0001] This invention relates to the field of photovoltaic technology, and specifically to a wireless grounding device and grounding method for photovoltaic modules. [Background Technology]

[0002] Grounding refers to the connection of the neutral point of a power system and electrical installations, the exposed conductive parts of electrical equipment, and the external conductive parts of the installations to the earth via a conductor. Like all electrical equipment, grounding design is of paramount importance in photovoltaic systems, affecting both the safety of power plant equipment and the safety of personnel. A qualified and effective grounding design is crucial for ensuring the safe operation of the power plant, reducing equipment failure frequency, and improving system efficiency.

[0003] A photovoltaic (PV) system mainly consists of an inverter, a distribution cabinet, PV modules (such as solar panels), and a support frame for the PV modules. Many people believe that since both the PV modules and the support frame are metal and directly conductive, grounding the support frame is sufficient for the PV modules. However, the frames of the PV modules and the support frame are coated, which may not meet grounding requirements. Furthermore, PV modules are subject to aging, potentially leading to excessive leakage current or low insulation resistance to ground. If the aluminum frames of the PV modules are not grounded, the inverter may malfunction after a few years, causing the system to fail to generate electricity. Currently, the common practice is to manually connect the PV modules with bolts after all the modules are installed, using grounding wires. However, this wired grounding method has the following technical drawbacks:

[0004] 1. Grounding via a conductor requires additional conductors and connectors, and grounding can only be carried out after the photovoltaic modules are installed.

[0005] 2. The grounding of photovoltaic modules involves many procedures and installation points, which is troublesome and requires a lot of manpower.

[0006] In view of this, the inventors of this case conducted in-depth research on the above-mentioned problems, which led to the creation of this case. [Summary of the Invention]

[0007] The present invention aims to solve the above-mentioned technical problems by providing a wireless grounding device and grounding method for photovoltaic modules, which enables the photovoltaic modules to quickly conduct current to the ground surface without additional wires when they are struck by lightning, resulting in good conductivity and a high safety factor.

[0008] This invention is implemented as follows: A wireless grounding device for photovoltaic modules includes multiple horizontally arranged aluminum alloy rails, multiple longitudinally inclined aluminum alloy main beams, multiple vertically arranged aluminum alloy legs, and steel grounding nails; the top surface of the aluminum alloy rails is connected to the bottom surface of the photovoltaic module frame via a spiked grounding plate, the spiked grounding plate piercing the oxide film of the photovoltaic module frame and the aluminum alloy rails; the top surface of the aluminum alloy main beams is connected to the bottom surface of the aluminum alloy rails via spiked rail clamping blocks, the spiked rail clamping blocks piercing the oxide film of the aluminum alloy rails and the aluminum alloy main beams; the top surface of the aluminum alloy legs is connected to the bottom surface of the aluminum alloy main beams via an adapter, and self-tapping screws are used to lock the aluminum alloy main beams and adapters, the self-tapping screws piercing the oxide film of the adapters and the aluminum alloy main beams; the top surface of the steel grounding nails is connected to the bottom surface of the aluminum alloy legs via a base; the bottom end of the steel grounding nails is inserted into the ground.

[0009] Furthermore, the spiked grounding plate includes a main plate, the upper surface of which is stamped with a plurality of upper spikes and the lower surface of which is stamped with a plurality of lower spikes.

[0010] Furthermore, the upper spike portion includes a plurality of upper spikes, which are distributed in a ring at equal intervals; the lower spike portion includes a plurality of lower spikes, which are distributed in a ring at equal intervals.

[0011] Furthermore, the plurality of upper spikes are arranged in an array; the plurality of lower spikes are arranged in an array.

[0012] Furthermore, one end of the main plate is punched downward to form two opposing first S-shaped locking blocks, and the other end is punched downward to form two opposing second S-shaped locking blocks; the top surface of the aluminum alloy guide rail is formed with a first slot for the first S-shaped locking blocks and the second S-shaped locking blocks to be inserted into, and the top of the first slot extends inward to form opposing first and second locking plates.

[0013] Furthermore, the spiked guide rail pressure block includes a main pressure plate, with a screw hole formed through the middle of the main pressure plate. One end of the main pressure plate has a downward-facing locking block, and the other end has a downward-facing abutting block. The bottom of the locking block and the bottom of the abutting block both have spikes. Hooks are formed on both sides of the bottom of the aluminum alloy guide rail. A second slot is formed between the hooks and the main body of the aluminum alloy guide rail for the locking block to engage.

[0014] Furthermore, the adapter includes an upper adapter portion and a lower adapter portion fixedly connected; the upper adapter portion includes a first upper adapter plate and a second upper adapter plate arranged opposite to each other, with an upper mounting groove for assembling an aluminum alloy main beam formed between the first upper adapter plate and the second upper adapter plate; self-tapping screw holes are formed on the first upper adapter plate and the second upper adapter plate, through which self-tapping screws pierce through the oxide film of the adapter portion and the aluminum alloy main beam; the lower adapter portion includes a first lower adapter plate and a second lower adapter plate arranged opposite to each other, with a lower mounting groove for assembling an aluminum alloy support leg formed between the first lower adapter plate and the second lower adapter plate; bolt holes are formed on the first lower adapter plate and the second lower lower adapter plate, through which transverse bolts pierce through the oxide film of the lower adapter portion and the aluminum alloy support leg.

[0015] Furthermore, the base includes a base plate and a first vertical plate and a second vertical plate fixed on the base plate. The first vertical plate and the second vertical plate are arranged opposite to each other, and a bottom cavity for assembling aluminum alloy support legs is formed between the first vertical plate and the second vertical plate. The base plate is connected to steel ground nails by vertical bolts, and the base plate is connected to the bottom end of the aluminum alloy support legs by transverse bolts.

[0016] Furthermore, an aluminum alloy inclined support leg is assembled between adjacent aluminum alloy support legs, with one end of the aluminum alloy inclined support leg assembled in the lower mounting groove of the lower adapter and the other end assembled in the bottom cavity of the base.

[0017] On the other hand, a method for grounding a photovoltaic module without wires includes the following steps:

[0018] Step 1: Screw the steel ground stakes into the ground;

[0019] Step 2: Assemble the base on the top surface of the steel ground stake; use vertical bolts to lock the base to the top surface of the steel ground stake, and connect the base plate and the steel ground stake with vertical bolts; insert the bottom of the aluminum alloy leg into the bottom cavity, and use through bolts to lock the aluminum alloy leg and the base, and connect the aluminum alloy leg and the base with through bolts.

[0020] Step 3: Install the adapter on the top of the aluminum alloy leg; use through bolts to lock the lower adapter to the top of the aluminum alloy leg, and connect the lower adapter to the aluminum alloy leg with the through bolts; install the aluminum alloy main beam in the upper mounting slot, and use self-tapping screws to lock the aluminum alloy main beam and the upper adapter, and pierce the oxide film of the adapter and the aluminum alloy main beam with the self-tapping screws.

[0021] Step 4: Connect the aluminum alloy guide rail and the aluminum alloy main beam using the spiked guide rail clamping block; the clamping block of the spiked guide rail clamping block is inserted into the second clamping groove, and the spikes of the clamping block pierce the oxide film of the aluminum alloy guide rail; the abutting block of the spiked guide rail clamping block abuts against the aluminum alloy main beam, and the spikes of the abutting block pierce the oxide film of the aluminum alloy main beam; finally, use bolts to lock the spiked guide rail clamping block onto the aluminum alloy main beam;

[0022] Step 5: Connect the aluminum alloy rail and the photovoltaic module frame using the spiked grounding plate; the lower parts of the first S-shaped clip and the second S-shaped clip are inserted into the first slot, and the lower spikes pierce the oxide film of the aluminum alloy rail; install the photovoltaic module frame on the spiked grounding plate, and the upper spikes pierce the oxide film of the photovoltaic module frame; finally, install the photovoltaic module into the photovoltaic module frame.

[0023] The advantages of this invention are:

[0024] 1. The wireless grounding device not only provides stable support for photovoltaic modules, but also utilizes standardized and customized accessories. It employs spiked grounding plates to pierce the oxide film on the photovoltaic module frame and aluminum alloy rails, spiked rail clamps to pierce the oxide film on the aluminum alloy rails and main beams, ST6.3 self-tapping screws to pierce the oxide film on the adapter and main beam, and horizontal bolts to connect the device to the lower aluminum alloy support legs, allowing it to conduct electricity downwards. Horizontal bolts connect the aluminum alloy support legs to the base, and vertical bolts connect the base to the steel grounding nails. This allows the photovoltaic modules to quickly conduct current to the ground without additional wires when struck by lightning, resulting in excellent conductivity and a high safety factor.

[0025] 2. The guide rails, main beams, and legs of the wireless grounding device are all made of aluminum alloy, which has low density and is lightweight. Different irregular cross-sections can be designed according to different scenarios to meet the requirements of pre-installation and provide them to areas with high labor costs, thereby significantly reducing labor costs.

[0026] 3. The guide rails, main beams, and legs made of aluminum alloy can form a dense oxide film after anodizing, which has good corrosion resistance. At the same time, the guide rails, main beams, and legs made of aluminum alloy can be produced by extrusion molding, which is simple to process. [Attached Image Description]

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is a schematic diagram of the installation structure of the photovoltaic module and the wireless grounding device in this invention.

[0029] Figure 2 yes Figure 1 The left view.

[0030] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0031] Figure 4 This is a schematic diagram of the structure of the grounding plate with spikes in this invention.

[0032] Figure 5 yes Figure 2Enlarged view of point B in the middle.

[0033] Figure 6 This is a schematic diagram of the connection structure between the aluminum alloy guide rail and the aluminum alloy main beam in this invention.

[0034] Figure 7 This is a schematic diagram of the adapter structure in this invention.

[0035] Figure 8 This is a schematic diagram of the connection structure between the aluminum alloy main beam and the aluminum alloy support legs in this invention.

[0036] Figure 9 This is a schematic diagram of the connection structure between the aluminum alloy support leg and the steel ground stake in this invention.

[0037] Figure label:

[0038] 1. Aluminum alloy guide rail; 11. First slot; 12. First plate; 13. Second plate; 14. Hook; 15. Second slot; 2. Aluminum alloy main beam; 3. Aluminum alloy support leg; 31. Aluminum alloy diagonal support leg; 4. Steel grounding nail; 5. Photovoltaic module frame; 6. Grounding plate with spikes; 61. Main plate; 62. Upper spike; 63. Lower spike; 64. First S-shaped locking block; 65. Second S-shaped locking block; 7. Guide rail pressure block with spikes; 71. Main pressure plate; 72. Locking block. 73. Top block, 8. Adapter, 81. Upper adapter, 811. First upper adapter plate, 812. Second upper adapter plate, 813. Upper mounting groove, 814. Self-tapping screw hole, 82. Lower adapter, 821. First lower adapter plate, 822. Second lower adapter plate, 823. Lower mounting groove, 824. Bolt hole, 9. Base, 91. Base plate, 92. First vertical plate, 93. Second vertical plate, 94. Bottom cavity, 95. Vertical bolt, 96. Horizontal bolt, 10. Self-tapping screw.

Detailed Implementation Methods

[0039] 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 a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0040] Please see Figures 1 to 9As shown, this invention provides a wireless grounding device for photovoltaic modules, including multiple horizontally arranged aluminum alloy rails 1, multiple longitudinally inclined aluminum alloy main beams 2, multiple vertically arranged aluminum alloy legs 3, and multiple steel grounding nails 4; the top surface of the aluminum alloy rails 1 is connected to the bottom surface of the photovoltaic module frame 5 through a spiked grounding plate 6, the spiked grounding plate 6 piercing the oxide film of the photovoltaic module frame 5 and the aluminum alloy rails 1; the top surface of the aluminum alloy main beams 2 is connected to the bottom surface of the aluminum alloy rails 1 through spiked rail pressing blocks 7, the spiked rail pressing blocks 7... The oxide film of the aluminum alloy guide rail 1 and the aluminum alloy main beam 2 is pierced; the top surface of the aluminum alloy support leg 3 is connected to the bottom surface of the aluminum alloy main beam 2 through the adapter 8; the adapter 8 is used with the self-tapping screw 10 to lock the aluminum alloy main beam and the adapter 8, and the self-tapping screw 10 pierces the oxide film of the adapter 8 and the aluminum alloy main beam 2; the top surface of the steel ground nail 4 is connected to the bottom surface of the aluminum alloy support leg 3 through the base 9; the base 9 is used with the vertical bolt 95 and the horizontal bolt 96 to pierce the oxide film of the aluminum alloy support leg 3 and the steel ground nail 4; the bottom end of the steel ground nail 4 is inserted into the ground.

[0041] The wireless grounding device for photovoltaic modules of the present invention has at least the following beneficial technical effects:

[0042] 1. The wireless grounding device not only provides stable support for photovoltaic modules, but also utilizes standardized and customized accessories. It uses a spiked grounding plate 6 to pierce the oxide film of the photovoltaic module frame 5 and the aluminum alloy rail 1, a spiked rail clamping block 7 to pierce the oxide film of the aluminum alloy rail 1 and the aluminum alloy main beam 2, and an ST6.3 self-tapping screw 10 to pierce the oxide film of the adapter 8 and the aluminum alloy main beam 2. A horizontal bolt 96 connects the device to the lower aluminum alloy support leg 3, allowing it to conduct electricity downwards. The horizontal bolt 96 also connects the aluminum alloy support leg 3 to the base 9, and a vertical bolt 95 connects the base 9 to the steel grounding nail 4. This allows the photovoltaic modules to quickly conduct current to the ground without additional wires when struck by lightning, resulting in excellent conductivity and a high safety factor.

[0043] 2. The guide rails, main beams, and legs of the wireless grounding device are all made of aluminum alloy, which has low density and is lightweight. Different irregular cross-sections can be designed according to different scenarios to meet the requirements of pre-installation and provide them to areas with high labor costs, thereby significantly reducing labor costs.

[0044] 3. The guide rails, main beams, and legs made of aluminum alloy can form a dense oxide film after anodizing, which has good corrosion resistance. At the same time, the guide rails, main beams, and legs made of aluminum alloy can be produced by extrusion molding, which is simple to process.

[0045] In this invention, reference is made to the appendix. Figure 4-5As shown, the spiked grounding plate 6 includes a main plate 61. The upper surface of the main plate 61 is stamped with multiple upper spikes 62, and the lower surface is stamped with multiple lower spikes 63. The main plate 61 is a flat plate, assembled between the bottom surface of the photovoltaic module frame 5 and the top surface of the aluminum alloy guide rail 1. The upper spikes 62 are used to pierce the oxide film of the photovoltaic module frame 5, and the lower spikes 63 are used to pierce the oxide film of the aluminum alloy guide rail 1, enabling electrical conductivity between the photovoltaic module frame 5 and the aluminum alloy guide rail 1.

[0046] In this invention, the upper spike portion 62 includes a plurality of upper spikes, which are distributed in a ring at equal intervals; the lower spike portion 63 includes a plurality of lower spikes, which are also distributed in a ring at equal intervals. Both the upper spike portion 62 and the lower spike portion 63 are formed using a perforated stamping process. The ring-shaped distribution of the multiple upper spikes at equal intervals allows for uniform penetration of the oxide film on the photovoltaic module frame 5, and the ring-shaped distribution of the multiple lower spikes at equal intervals allows for uniform penetration of the oxide film on the aluminum alloy guide rail 1. Furthermore, the multiple upper spike portions 62 and the multiple lower spike portions 63 are arranged in an array. The array-shaped distribution of the multiple upper spike portions 62 allows for uniform penetration of the oxide film on the photovoltaic module frame 5; the array-shaped distribution of the multiple lower spike portions 63 allows for uniform penetration of the oxide film on the aluminum alloy guide rail 1.

[0047] In this invention, one end of the main plate 61 is punched downward to form two opposing first S-shaped locking blocks 64, and the other end is punched downward to form two opposing second S-shaped locking blocks 65; see attached figure. Figure 3 As shown, the top surface of the aluminum alloy guide rail 1 has a first slot 11 for the first S-shaped locking block 64 and the second S-shaped locking block 65 to be engaged. The top of the first slot 11 extends inward to form a first locking plate 12 and a second locking plate 13, which are arranged opposite to each other. During assembly, the lower parts of the first S-shaped locking block 64 and the second S-shaped locking block 65 are engaged in the first slot 11, and the first locking plate 12 and the second locking plate 13 limit the upper parts of the first S-shaped locking block 64 and the second S-shaped locking block 65 to prevent them from disengaging from the first slot 11, so as to stably connect the spiked grounding piece 6 to the aluminum alloy guide rail 1.

[0048] In this invention, reference is made to the appendix. Figure 6As shown, the spiked guide rail pressure block 7 includes a main pressure plate 71, with a screw hole formed through the middle of the main pressure plate 71. One end of the main pressure plate 71 has a downward-facing locking block 72, and the other end has a downward-facing abutment block 73. Both the bottom of the locking block 72 and the bottom of the abutment block 73 have spikes. The aluminum alloy guide rail 1 is formed using an aluminum extrusion process and includes a guide rail main frame. A first locking groove 11 is formed on the top of the guide rail main frame, and locking hooks 14 are formed on both sides of the bottom of the guide rail main frame. A second locking groove 15 is formed between the locking hooks 14 and the guide rail main frame for the locking block 72 to engage. During assembly, first insert the locking block 72 into the second locking slot 15, and the spikes of the locking block 72 pierce the oxide film of the aluminum alloy guide rail 1; the abutting block 73 abuts against the aluminum alloy main beam 2, and the spikes of the abutting block 73 pierce the oxide film of the aluminum alloy main beam 2; finally, use bolts to lock the spiked guide rail pressure block 7 onto the aluminum alloy main beam 2, so that the aluminum alloy guide rail 1 and the aluminum alloy main beam 2 can conduct electricity.

[0049] In this invention, reference is made to the appendix. Figure 7-8 As shown, the adapter 8 is an H-type adapter, including an upper adapter portion 81 and a lower adapter portion 82 fixedly connected; the upper adapter portion 81 and the lower adapter portion 82 are integrally formed. The upper adapter portion 81 includes a first upper adapter plate 811 and a second upper adapter plate 812 disposed opposite to each other, and an upper mounting groove 813 for assembling the aluminum alloy main beam 2 is formed between the first upper adapter plate 811 and the second upper adapter plate 812; self-tapping screw holes 814 are formed on the first upper adapter plate 811 and the second upper adapter plate 812, and self-tapping screws 10 pierce through the oxide film of the adapter portion 81 and the aluminum alloy main beam 2. After the self-tapping screws 10 pass through the self-tapping screw holes 814 of the first upper adapter plate 811, the aluminum alloy main beam 2, and the self-tapping screw holes 814 of the second upper adapter plate 812 in sequence, the upper adapter portion 81 and the aluminum alloy main beam 2 are locked together, so that the aluminum alloy main beam 2 and the adapter 8 can conduct electricity.

[0050] The lower adapter 82 includes a first lower adapter plate 821 and a second lower adapter plate 822 disposed opposite to each other. A lower mounting groove 823 for mounting the aluminum alloy support leg 3 is formed between the first lower adapter plate 821 and the second lower adapter plate 822. Bolt holes 824 are formed on the first lower adapter plate 821 and the second lower adapter plate 822, and the lower adapter 82 is connected to the aluminum alloy support leg 3 by a through bolt 96. After the through bolt 96 passes through the bolt holes 824 of the first lower adapter plate 821, the aluminum alloy support leg 3, and the bolt holes 824 of the second lower adapter plate 822 in sequence, the lower adapter 82 is locked to the aluminum alloy support leg 3.

[0051] Preferably, the self-tapping screw 10 is any one of ST6.3 self-tapping screw, ST5.5 self-tapping screw, and ST4.8 self-tapping screw.

[0052] In this invention, the base 9 includes a base plate 91 and a first vertical plate 92 and a second vertical plate 93 fixed on the base plate 91. The first vertical plate 92 and the second vertical plate 93 are arranged opposite to each other, and a cavity 94 for assembling the aluminum alloy support leg 3 is formed between the first vertical plate 92 and the second vertical plate 93. The base plate 91 is connected to the steel ground nail 4 by a vertical bolt 95, and the base plate 91 is connected to the bottom end of the aluminum alloy support leg 3 by a through bolt 96. The through bolt 96 connects the aluminum alloy support leg 3 to the first vertical plate 92 and the second vertical plate 93, so that the aluminum alloy support leg 3 and the base 9 can conduct electricity. The vertical bolt 96 pierces the oxide film of the base plate 91 and the steel ground nail 4, so that the aluminum alloy support leg 3, the base 9 and the steel ground nail 4 can conduct electricity.

[0053] In this invention, an aluminum alloy inclined support leg 31 is assembled between adjacent aluminum alloy support legs 3. One end of the aluminum alloy inclined support leg 31 is assembled in the lower mounting groove 823 of the lower adapter 82, and the other end is assembled in the bottom cavity 94 of the base 9. By setting the aluminum alloy inclined support leg 31, the connection stability between adjacent aluminum alloy support legs 3 can be enhanced, and the structural strength and support strength of the wireless grounding device can be further improved.

[0054] The present invention also provides a method for grounding photovoltaic modules without wires, comprising the following steps:

[0055] Step 1: Screw the steel ground stake 4 into the ground.

[0056] Step 2: Assemble the base 9 on the top surface of the steel ground nail 4; use vertical bolts 95 to lock the base 9 to the top surface of the steel ground nail 4, connecting the base plate 91 and the steel ground nail 4; insert the bottom of the aluminum alloy support leg 3 into the bottom cavity 94, and use through bolts 96 to lock the aluminum alloy support leg 3 and the base 9, connecting the aluminum alloy support leg 3 and the base 9. The steel ground nail 4 itself is conductive, and the hot-dip galvanized layer on its surface is also conductive, so the vertical bolts 95 will conduct electricity upon contact with the steel ground nail.

[0057] Step 3: Install the adapter 8 on the top of the aluminum alloy leg 3; use the through bolt 96 to lock the lower adapter 82 to the top of the aluminum alloy leg 3, and the through bolt 96 connects the lower adapter 82 to the aluminum alloy leg 3; install the aluminum alloy main beam 2 in the upper mounting groove 813, and use the self-tapping screw 10 to lock the aluminum alloy main beam 2 and the upper adapter 81, and the self-tapping screw 10 pierces through the oxide film of the adapter 81 and the aluminum alloy main beam 2.

[0058] Step 4: Use the spiked guide rail clamping block 7 to connect the aluminum alloy guide rail 1 and the aluminum alloy main beam 2; first, place the aluminum alloy guide rail 1 on the top surface of the aluminum alloy main beam 2, and insert the clamping block 72 of the spiked guide rail clamping block 7 into the second clamping groove 15, with the spikes of the clamping block 72 piercing the oxide film of the aluminum alloy guide rail 1; the abutting block 73 of the spiked guide rail clamping block 7 abuts against the aluminum alloy main beam 2, with the spikes of the abutting block 73 piercing the oxide film of the aluminum alloy main beam 2; finally, use bolts to lock the spiked guide rail clamping block 7 onto the aluminum alloy main beam 2.

[0059] Step 5: Connect the aluminum alloy rail 1 and the photovoltaic module frame 5 using the spiked grounding plate 6; the lower parts of the first S-shaped clip 64 and the second S-shaped clip 65 are inserted into the first slot 11, and the lower spike 63 pierces the oxide film of the aluminum alloy rail 1; install the photovoltaic module frame 5 on the spiked grounding plate 6, and the upper spike 62 pierces the oxide film of the photovoltaic module frame 5; finally, install the photovoltaic module into the photovoltaic module frame 5.

[0060] The wireless grounding method for photovoltaic modules of the present invention has at least the following beneficial technical effects:

[0061] 1. No additional grounding wire is required, and the grounding device does not need to wait until the photovoltaic modules are installed before it can be installed. Fewer installation points and higher installation efficiency greatly reduce labor costs.

[0062] 2. Utilizing a variety of standardized and customized accessories, and through the properties of metal, photovoltaic modules can conduct current to the ground at high speed without additional wires when struck by lightning, resulting in a high safety factor.

[0063] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A wireless grounding device for photovoltaic modules, characterized in that: It includes multiple horizontally arranged aluminum alloy guide rails, multiple longitudinally inclined aluminum alloy main beams, multiple vertically arranged aluminum alloy legs, and steel ground spikes; The top surface of the aluminum alloy guide rail is connected to the bottom surface of the photovoltaic module frame through a spiked grounding plate, and the spiked grounding plate pierces the oxide film of the photovoltaic module frame and the aluminum alloy guide rail. The top surface of the aluminum alloy main beam is connected to the bottom surface of the aluminum alloy guide rail through a spiked guide rail pressure block, and the spiked guide rail pressure block pierces the oxide film of the aluminum alloy guide rail and the aluminum alloy main beam. The top surface of the aluminum alloy support leg is connected to the bottom surface of the aluminum alloy main beam via an adapter. Self-tapping screws are used to lock the aluminum alloy main beam and the adapter together, with the screws piercing the oxide film on both the adapter and the main beam. The adapter includes an upper adapter portion and a lower adapter portion fixedly connected. The upper adapter portion includes a first upper adapter plate and a second upper adapter plate arranged opposite each other, with an upper mounting groove for assembling the aluminum alloy main beam formed between them. Self-tapping screw holes are formed on the first and second upper adapter plates, allowing the screws to pierce the oxide film on both the adapter portion and the main beam. The lower adapter portion includes a first lower adapter plate and a second lower adapter plate arranged opposite each other, with a lower mounting groove for assembling the aluminum alloy support leg formed between them. Bolt holes are formed on the first and second lower adapter plates, allowing bolts to pierce the oxide film on both the lower adapter portion and the support leg. The top surface of the steel ground spike is connected to the bottom surface of the aluminum alloy support leg via a base; the bottom end of the steel ground spike is inserted into the ground; the base includes a base plate and a first vertical plate and a second vertical plate fixed on the base plate, the first vertical plate and the second vertical plate are arranged opposite to each other, and a bottom cavity for assembling the aluminum alloy support leg is formed between the first vertical plate and the second vertical plate; the base plate is connected to the steel ground spike by vertical bolts, and the base plate is connected to the bottom end of the aluminum alloy support leg by transverse bolts; An aluminum alloy inclined support leg is assembled between adjacent aluminum alloy support legs. One end of the aluminum alloy inclined support leg is assembled in the lower mounting groove of the lower adapter and the other end is assembled in the bottom cavity of the base.

2. The non-contact grounding device for photovoltaic modules as described in claim 1, characterized in that: The spiked grounding plate includes a main plate, the upper surface of which is stamped with a plurality of upper spikes and the lower surface of which is stamped with a plurality of lower spikes.

3. The non-contact grounding device for photovoltaic modules as described in claim 2, characterized in that: The upper spike portion includes a plurality of upper spikes, which are distributed in a ring at equal intervals; the lower spike portion includes a plurality of lower spikes, which are distributed in a ring at equal intervals.

4. The non-contact grounding device for photovoltaic modules as described in claim 3, characterized in that: The plurality of upper spikes are arranged in an array; the plurality of lower spikes are arranged in an array.

5. The non-contact grounding device for a photovoltaic module as described in any one of claims 2-4, characterized in that: One end of the main plate is punched downward to form two opposing first S-shaped locking blocks, and the other end is punched downward to form two opposing second S-shaped locking blocks; the top surface of the aluminum alloy guide rail is formed with a first slot for the first S-shaped locking blocks and the second S-shaped locking blocks to be inserted into, and the top of the first slot extends inward to form opposing first and second locking plates.

6. The non-contact grounding device for photovoltaic modules as described in claim 5, characterized in that: The spiked guide rail pressure block includes a main pressure plate, with a screw hole formed through the middle of the main pressure plate. One end of the main pressure plate has a downward-facing locking block, and the other end has a downward-facing abutting block. The bottom of the locking block and the bottom of the abutting block both have spikes. Hooks are formed on both sides of the bottom of the aluminum alloy guide rail. A second slot is formed between the hooks and the main body of the aluminum alloy guide rail for the locking block to engage.

7. A grounding method based on the non-conductive grounding device of the photovoltaic module according to claim 6, characterized in that: Includes the following steps: Step 1: Screw the steel ground stakes into the ground; Step 2: Assemble the base on the top surface of the steel ground stake; use vertical bolts to lock the base to the top surface of the steel ground stake, and connect the base plate and the steel ground stake with vertical bolts; insert the bottom of the aluminum alloy leg into the bottom cavity, and use through bolts to lock the aluminum alloy leg and the base, and connect the aluminum alloy leg and the base with through bolts. Step 3: Install the adapter on the top of the aluminum alloy leg; use through bolts to lock the lower adapter to the top of the aluminum alloy leg, and connect the lower adapter to the aluminum alloy leg with the through bolts; install the aluminum alloy main beam in the upper mounting slot, and use self-tapping screws to lock the aluminum alloy main beam and the upper adapter, and pierce the oxide film of the adapter and the aluminum alloy main beam with the self-tapping screws. Step 4: Connect the aluminum alloy guide rail and the aluminum alloy main beam using the spiked guide rail clamping block; the clamping block of the spiked guide rail clamping block is inserted into the second clamping groove, and the spikes of the clamping block pierce the oxide film of the aluminum alloy guide rail; the abutting block of the spiked guide rail clamping block abuts against the aluminum alloy main beam, and the spikes of the abutting block pierce the oxide film of the aluminum alloy main beam; finally, use bolts to lock the spiked guide rail clamping block onto the aluminum alloy main beam; Step 5: Connect the aluminum alloy rail and the photovoltaic module frame using the spiked grounding plate; the lower parts of the first S-shaped clip and the second S-shaped clip are inserted into the first slot, and the lower spikes pierce the oxide film of the aluminum alloy rail; install the photovoltaic module frame on the spiked grounding plate, and the upper spikes pierce the oxide film of the photovoltaic module frame; finally, install the photovoltaic module into the photovoltaic module frame.

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