Rain-proof and sun-proof combiner box for photovoltaic power station and use method of rain-proof and sun-proof combiner box

Abstract

The invention provides a photovoltaic power station rain-proof and sun-proof combiner box and a using method thereof, the photovoltaic power station rain-proof and sun-proof combiner box comprises a combiner box body, a rain-proof sealing cover is arranged above the combiner box body, and a double-layer waterproof eave and an inclined plate are additionally arranged at the end part, so that rainwater is effectively prevented from directly falling on a box door or a box body seam, and the possibility of rainwater permeation is reduced. The U-shaped drainage groove further guides rainwater to flow to a designated drainage area, and water accumulation and corrosion are avoided. The inner side baffle plate and the sunscreen heat insulation plate are combined for use, so that a protection layer is provided for the combiner box, internal temperature rise is reduced, and components are protected from being influenced by high temperature. The structural strength of the upper part of the combiner box is enhanced by honeycomb net reinforcing ribs on the inner layer of the diaphragm plate, an extra waterproof barrier is provided by a sealant filling layer and a waterproof rubber coating, and the installation and replacement processes of components are simplified by externally buckling slide rails and slide rail grooves on the components, so that the maintenance is more convenient. The application of the insulating isolation plate ensures the safety of equipment operation, and avoids the risk of short circuit caused by direct contact between components.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic power station combiner boxes, and in particular to a rainproof and sun-proof combiner box for a photovoltaic power station and a use method thereof. Background Art

[0002] As a clean and renewable energy form, the construction scale of photovoltaic power stations is constantly expanding. However, during the outdoor operation of photovoltaic power stations, they have to face the challenges of harsh natural environment, especially rain and direct sunlight. As an important part of the photovoltaic system, the combiner box contains a large number of circuit components. Once water enters or overheats, it will directly affect the normal operation of the system.

[0003] An intelligent solar photovoltaic power station AC junction box proposed in Chinese invention patent application number: CN202211600885.X includes a main body mechanism, a first fixing mechanism is provided on the main body mechanism, a second fixing mechanism is provided on the first fixing mechanism, a wire clamping mechanism for clamping the wiring harness of the electrical component is installed on the first fixing mechanism, two groups of mounting mechanisms are provided on the main body mechanism, a driving mechanism is provided on the main body mechanism, and the driving mechanism conflicts with the mounting mechanism; a wire clamping mechanism is provided on the first fixing mechanism, and before installing the electrical component on the mounting plate, a paddle can be toggled to shrink the card plate, at which time the clamping groove is connected with the wire inlet, and the wiring harness of the electrical component is placed inside the clamping groove, and the paddle is released when installing the cross plate, so that the wire clamping mechanism clamps the wiring harness while the cross plate is installed.

[0004] However, the existing combiner boxes have some shortcomings during use and still need to be improved. The waterproof performance is insufficient: the existing combiner box design often cannot prevent rainwater penetration well, especially under severe weather conditions. Rainwater can easily enter the box through the box door gaps, vents and other parts, causing internal components to become damp, corroded or even short-circuited, affecting the normal operation of the system.

[0005] Traditional combiner boxes usually lack effective sun protection and heat insulation measures. The box directly exposed to the sun is prone to high internal temperature due to high temperature, affecting the performance and life of components and increasing the failure rate.

[0006] The seals of existing combiner boxes often cannot meet the long-term requirements of waterproofing and dustproofing, especially in areas with large temperature differences or heavy winds and sand. Aging, deformation or damage of the sealing strips may lead to seal failure.

[0007] The internal structure design of the existing combiner box does not fully consider the installation convenience of components, resulting in insufficient utilization of the internal space and difficulty in maintenance and repair. The existing combiner box cannot effectively remove water accumulation, especially in the rainy season or humid environment, which easily causes water accumulation and moisture problems. Therefore, we have made improvements to this and proposed a rainproof and sun-proof combiner box for photovoltaic power stations and its use method. Summary of the invention

[0008] The purpose of the present invention is to address the problems raised by the existing background technology. In order to achieve the above invention purpose, the present invention provides the following technical solutions: a rainproof and sun-proof junction box for a photovoltaic power station, comprising a junction box body, a box door is provided on the junction box body, a rainproof sealing cover is provided on the top of the junction box body, a double-layer waterproof eaves is provided at the end of the rainproof sealing cover, an inclined plate is provided obliquely above the double-layer waterproof eaves, a waterproof membrane plate is provided on the upper part of the junction box body, an isolation membrane is provided on the waterproof membrane plate, a membrane plate inner layer honeycomb mesh reinforcement rib is provided on the inner side of the isolation membrane, a sealant filling layer is filled inside the membrane plate inner layer honeycomb mesh reinforcement rib, a waterproof rubber coating is provided on the outside of the sealant filling layer, a U-shaped drainage groove is provided on the side of the junction box body, the U-shaped drainage groove is connected to a water pipe, and a filter is provided in the water pipe.

[0009] As a preferred technical solution of the present invention, a rainproof inner baffle is provided on the inner side of the combiner box body, and a sun-proof and heat-insulating board is provided on the inner side of the rainproof inner baffle.

[0010] As a preferred technical solution of the present invention, the exterior of the sun-proof and heat-insulating board is coated with a heat-insulating coating, the interior of the heat-insulating coating is provided with a tensile-resistant mesh inner layer, the tensile-resistant mesh inner layer is embedded with a double-layer hollow tempered glass, the double-layer hollow tempered glass is provided with a heat-insulating hollow interlayer, and the inner side of the double-layer hollow tempered glass is provided with a sun-proof and heat-insulating tile.

[0011] As a preferred technical solution of the present invention, an elastic sealing strip is provided at the edge of the box door, a sealing strip groove is opened at the edge of the combiner box body, and the elastic sealing strip is embedded and matched with the sealing strip groove.

[0012] As a preferred technical solution of the present invention, a component outer buckle slide rail is arranged inside the combiner box body, the component outer buckle slide rail is provided with a slide rail groove, and an insulating isolation plate is arranged below the component outer buckle slide rail.

[0013] As a preferred technical solution of the present invention, a component slide rail inner buckle is provided at the lower inner part of the combiner box body, the component slide rail inner buckle is provided with an inner buckle groove, and the component outer buckle slide rail and the component slide rail inner buckle are isolated by an insulating isolation plate.

[0014] A method for using a rainproof and sun-proof combiner box for a photovoltaic power station comprises the following steps: Step 1, placing a combiner box body in an appropriate position to ensure that it is stable and level; installing a rainproof sealing cover above the combiner box body, ensuring that a double-layer waterproof eaves and an inclined plate are correctly installed to prevent rainwater from entering;

[0015] Step 2: Install a waterproof membrane plate on the upper part of the combiner box body, and set an isolation membrane on the waterproof membrane plate; set a honeycomb mesh reinforcement rib of the inner layer of the membrane plate on the inner side of the isolation membrane to enhance its structural strength;

[0016] Step 3: Fill the inner part of the honeycomb mesh reinforcement ribs of the inner layer of the membrane panel with a sealant filling layer, and then apply a waterproof rubber coating on the outside to provide additional waterproof protection;

[0017] Step 4: Install a U-shaped drainage trough on the side of the combiner box and connect it to the water pipe; set a filter in the water pipe to prevent debris from entering the drainage system;

[0018] Step 5: Install a rainproof inner baffle on the inner side of the combiner box, and install a sun-proof and heat-insulating board on the inner side to prevent rain and sunlight from directly shining on the components;

[0019] Step 6: Apply a heat-insulating coating to the outside of the sun-proof and heat-insulating board to further improve its sun-proof effect; set a tensile grid inner layer inside the heat-insulating coating and embed double-layer hollow tempered glass to enhance its structural strength and provide additional heat-insulating protection; install sun-proof and heat-insulating tiles on the inner side of the double-layer hollow tempered glass to improve its sun-proof effect;

[0020] Step 7: Install elastic sealing strips on the edge of the box door, and open sealing strip grooves on the edge of the combiner box to ensure the tightness of the box;

[0021] Step 8. Install the external component rails inside the combiner box and open rail grooves; install an insulating isolation plate below the external component rails to ensure the safety of the components; install the internal component rails on the lower inner side of the combiner box and open internal grooves; isolate the external component rails and the internal component rails through insulating isolation plates to ensure the safety of the components.

[0022] As a preferred technical solution of the present invention, the width of the double-layer waterproof eaves of the rainproof sealing cover is 50 mm, the inclination angle is 30 degrees, the thickness of the waterproof membrane is 3 mm, and the thickness of the isolation membrane is 0.5 mm;

[0023] The thickness of the sealant filling layer is 2mm, the thickness of the external waterproof rubber coating is 1mm, the load-bearing weight of the component external buckle slide rail is 30kg-50kg, and the size of the slide rail groove is 50mm-80mm in length and 10mm-30mm in width.

[0024] As a preferred technical solution of the present invention, the insulation temperature range of the sun-proof and heat-insulating board is -20°C to 120°C, the insulation efficiency is 90%, the temperature resistance range of the elastic sealing strip is -40°C to 150°C, and the compression permanent deformation rate is 10%.

[0025] As a preferred technical solution of the present invention, the honeycomb mesh reinforcement ribs of the inner layer of the membrane plate are of a honeycomb structure, and the pore size of the filter mesh is ≤3mm, which can effectively filter impurities.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scheme of the present invention: by providing a rainproof sealing cover above the junction box body and adding a double-layer waterproof eaves and inclined plates at the ends, it is effectively prevented from rainwater directly falling on the box door or the box body joints, reducing the possibility of rainwater penetration. The U-shaped drainage trough further guides rainwater to the designated discharge area to avoid water accumulation and corrosion. The combined use of the inner baffle and the sun-proof insulation board provides an additional protective layer for the junction box, blocking direct sunlight, reducing the internal temperature increase, and protecting components from high temperature. The use of thermal insulation coating and double-layer hollow tempered glass further improves the thermal insulation effect.

[0027] The honeycomb mesh reinforcement ribs on the inner layer of the membrane increase the structural strength of the upper part of the junction box, making it more able to withstand the pressure from the external environment. The sealant filling layer and waterproof rubber coating provide an additional waterproof barrier, enhancing the sealing and durability of the overall structure. The external buckle rails and rail grooves of the components simplify the installation and replacement process of the components, making maintenance more convenient. The application of the insulating isolation board ensures the safety of equipment operation and avoids the risk of short circuit caused by direct contact between components.

[0028] The elastic sealing strip on the edge of the box door is combined with the sealing strip groove on the edge of the combiner box to ensure the sealing effect when closed, prevent dust, moisture and other impurities from entering the box, and ensure the cleanliness and dryness of the internal components. The internal structure of the combiner box takes easy maintenance into consideration. The inner and outer buckled slide rails of the component rails allow the internal components to be easily slid and fixed, which is convenient for regular inspection and maintenance. The present invention is suitable for different climatic conditions, and can maintain good protection effects regardless of rainy, hot or dusty environments, ensuring the stable operation and long-term reliability of the photovoltaic power station. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure provided by the present invention;

[0030] Figure 2 A main cross-sectional schematic diagram provided by the present invention;

[0031] Figure 3 A schematic diagram of the structure of the sun-proof and heat-insulating board provided by the present invention;

[0032] Figure 4 A schematic diagram of the structure of the external buckle slide rail for components provided by the present invention;

[0033] Figure 5 A schematic diagram of a cross-sectional structure of a waterproof membrane plate provided by the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the sealing strip groove provided by the present invention.

[0035] Indicated in the figure:

[0036] 1. Combiner box body; 101. Box door; 2. Rainproof sealing cover; 3. Double-layer waterproof eaves; 301. Inclined plate; 4. Waterproof membrane plate; 401. Isolation membrane; 402. Sealant filling layer; 403. Honeycomb mesh reinforcement ribs in the inner layer of the membrane plate; 404. Waterproof rubber coating; 5. Sealant strip groove; 501. Elastic sealing strip; 6. U-shaped drainage trough; 601. Water guide pipe; 602. Filter; 7. Rainproof inner baffle; 8. Sun-proof and heat-insulating board; 801. Heat-insulating coating; 802. Tensile mesh inner layer; 803. Double-layer hollow tempered glass; 804. Heat-insulating hollow interlayer; 805. Sun-proof and heat-insulating tile; 9. External buckle slide rail for components; 901. Slide rail groove; 10. Insulating isolation board; 11. Internal buckle slide rail for components; 1101. Internal buckle groove. DETAILED DESCRIPTION

[0037] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0038] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features and technical solutions in the embodiments can be combined with each other without conflict. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0039] Example 1: Please refer to Figure 1-Figure 6A rainproof and sunproof combiner box for a photovoltaic power station comprises a combiner box body 1, a box door 101 is arranged on the combiner box body 1, a rainproof sealing cover 2 is arranged above the combiner box body 1, a double-layer waterproof eaves 3 is arranged at the end of the rainproof sealing cover 2, an inclined plate 301 is arranged obliquely above the double-layer waterproof eaves 3, a waterproof membrane plate 4 is arranged on the upper part of the combiner box body 1, an isolation membrane 401 is arranged on the waterproof membrane plate 4, an inner side of the isolation membrane 401 is provided with a membrane plate inner layer honeycomb mesh reinforcement rib 403, the interior of the membrane plate inner layer honeycomb mesh reinforcement rib 403 is filled with a sealant filling layer 402, and a waterproof rubber coating 404 is arranged on the outside of the sealant filling layer 402, a U-shaped drainage groove 6 is arranged on the side of the combiner box body 1, the U-shaped drainage groove 6 is connected to a water pipe 601, and a filter screen 602 is arranged in the water pipe 601.

[0040] A rainproof inner baffle plate 7 is arranged inside the combiner box body 1 , and a sun-proof and heat-insulating plate 8 is arranged inside the rainproof inner baffle plate 7 .

[0041] The exterior of the sun-proof and heat-insulating board 8 is coated with a heat-insulating coating 801, a tensile-resistant mesh inner layer 802 is arranged inside the heat-insulating coating 801, a double-layer hollow tempered glass 803 is embedded in the tensile-resistant mesh inner layer 802, a heat-insulating hollow interlayer 804 is arranged in the double-layer hollow tempered glass 803, and a sun-proof and heat-insulating tile 805 is arranged on the inner side of the double-layer hollow tempered glass 803.

[0042] An elastic sealing strip 501 is arranged at the edge of the box door 101 , and a sealing strip groove 5 is opened at the edge of the combiner box body 1 , and the elastic sealing strip 501 is embedded and matched with the sealing strip groove 5 .

[0043] A component outer buckle slide rail 9 is arranged inside the combiner box body 1 . The component outer buckle slide rail 9 is provided with a slide rail groove 901 . An insulating isolation plate 10 is arranged below the component outer buckle slide rail 9 .

[0044] The lower inner part of the combiner box body 1 is provided with a component slide rail inner buckle 11 , and the component slide rail inner buckle 11 is provided with an inner buckle groove 1101 . The component outer buckle slide rail 9 and the component slide rail inner buckle 11 are isolated by an insulating isolation plate 10 .

[0045] By setting a rainproof sealing cover 2 above the combiner box body 1 and adding a double-layer waterproof eaves 3 and an inclined plate 301 at the end, rainwater can be effectively prevented from falling directly on the box door or the box body joints, reducing the possibility of rainwater penetration. The U-shaped drainage trough 6 further guides rainwater to the designated discharge area to avoid water accumulation and corrosion.

[0046] The combination of the inner baffle and the sun-proof and heat-insulating board 8 provides an additional protective layer for the junction box, blocks direct sunlight, reduces the internal temperature rise, and protects the components from high temperature. The use of the heat-insulating coating 801 and the double-layer hollow tempered glass 803 further improves the heat-insulating effect.

[0047] The honeycomb mesh reinforcement ribs 403 in the inner layer of the membrane plate increase the structural strength of the upper part of the junction box, making it more able to withstand the pressure from the external environment, such as wind pressure and snow accumulation. The sealant filling layer 402 and the waterproof rubber coating 404 provide an additional waterproof barrier, enhancing the sealing and durability of the overall structure.

[0048] The component buckle rail 9 and the rail groove 901 simplify the installation and replacement process of components and make maintenance more convenient. The application of the insulating isolation plate 10 ensures the safety of equipment operation and avoids the risk of short circuit caused by direct contact between components.

[0049] The elastic sealing strip 501 on the edge of the box door 101 is combined with the sealing strip groove 5 on the edge of the combiner box body 1 to ensure the sealing effect when closed, prevent dust, moisture and other impurities from entering the box, and ensure the cleanliness and dryness of internal components.

[0050] The internal structure of the combiner box takes into account easy maintenance. The inner buckle 11 of the component slide rail and the outer buckle slide rail make it easy for the internal components to slide and fix, which is convenient for regular inspection and maintenance. The present invention is suitable for different climatic conditions. Whether it is rainy, hot or dusty environment, it can maintain good protection effect and ensure stable operation and long-term reliability of photovoltaic power station.

[0051] Embodiment 1: A method for using a rainproof and sun-proof combiner box in a photovoltaic power station, comprising the following steps: Step 1, placing a combiner box body 1 in an appropriate position to ensure that it is stable and level; installing a rainproof sealing cover 2 above the combiner box body 1, ensuring that the double-layer waterproof eaves 3 and the inclined plate 301 are correctly installed to prevent rainwater from entering;

[0052] Step 2: Install the waterproof membrane plate 4 on the upper part of the combiner box body 1, and set the isolation membrane 401 on the waterproof membrane plate 4; set the membrane plate inner layer honeycomb mesh reinforcement rib 403 on the inner side of the isolation membrane 401 to enhance its structural strength;

[0053] Step 3: Fill the inner part of the honeycomb mesh reinforcement rib 403 of the inner layer of the membrane plate with a sealant filling layer 402, and then apply a waterproof rubber coating 404 on the outer part thereof to provide additional waterproof protection;

[0054] Step 4: Install a U-shaped drainage trough 6 on the side of the combiner box body 1 and connect it to the water pipe 601; set a filter 602 in the water pipe 601 to prevent debris in the drainage system from entering;

[0055] Step 5: Install a rainproof inner baffle 7 on the inner side of the combiner box body 1, and install a sun-proof heat-insulating plate 8 on the inner side thereof to prevent rain and sunlight from directly shining on the components;

[0056] Step 6: Apply a heat-insulating coating 801 to the outside of the sun-proof and heat-insulating board 8 to further improve its sun-proof effect; set a tensile grid inner layer 802 inside the heat-insulating coating 801, and embed a double-layer hollow tempered glass 803 to enhance its structural strength and provide additional heat-insulating protection; install a sun-proof and heat-insulating tile 805 on the inner side of the double-layer hollow tempered glass 803 to improve its sun-proof effect;

[0057] Step 7: Install an elastic sealing strip 501 at the edge of the box door 101, and open a sealing strip groove 5 at the edge of the combiner box 1 to ensure the sealing of the box;

[0058] Step 8, install the component outer buckle slide rail 9 inside the combiner box body 1, and open the slide rail groove 901; install the insulating isolation plate 10 below the component outer buckle slide rail 9 to ensure the safety of the components; install the component inner buckle slide rail 11 on the inner lower part of the combiner box body 1, and open the inner buckle groove 1101; isolate the component outer buckle slide rail 9 and the component inner buckle slide rail 11 through the insulating isolation plate 10 to ensure the safety of the components.

[0059] The double-layer waterproof eaves 3 of the rainproof sealing cover 2 has a width of 50 mm and an inclination angle of 30 degrees. The thickness of the waterproof membrane plate 4 is 3 mm, and the thickness of the isolation membrane 401 is 0.5 mm.

[0060] The thickness of the sealant filling layer 402 is 2mm, the thickness of the external waterproof rubber coating 404 is 1mm, the load-bearing weight of the component external buckle slide rail 9 is 30kg-50kg, and the size of the slide rail groove 901 is 50mm-80mm in length and 10mm-30mm in width.

[0061] The heat insulation temperature range of the sun-proof and heat-insulating board 8 is -20°C to 120°C, and the heat insulation efficiency is 90%. The temperature resistance range of the elastic sealing strip 501 is -40°C to 150°C, and the compression permanent deformation rate is 10%.

[0062] The honeycomb mesh reinforcement rib 403 of the inner layer of the membrane plate is a honeycomb structure, and the pore size of the filter mesh 602 is ≤3mm, which can effectively filter impurities.

[0063] The rainproof sealing cover 2 is equipped with a double-layer waterproof eaves 3 with a width of 50 mm and an inclination angle of 30 degrees. Such a design can more effectively guide rainwater to the drainage system, reduce rainwater directly hitting the junction box, and improve the waterproof effect.

[0064] The 3 mm thickness of the waterproof membrane plate 4, combined with the 0.5 mm thickness of the isolation membrane 401 and the 1 mm thickness of the external waterproof rubber coating 404, together form a solid multi-layer waterproof barrier that effectively prevents moisture penetration.

[0065] The honeycomb structure is adopted by the honeycomb mesh reinforcement rib 403 of the inner layer of the membrane plate. This structure has good compression and impact resistance, can enhance the structural strength of the upper part of the junction box, and protect the internal components from the external pressure.

[0066] The pore size of the filter 602 is ≤3 mm, so that impurities can be effectively filtered in the water pipe 6, preventing the drainage system from being blocked and ensuring smooth discharge of rainwater.

[0067] The sun-proof and heat-insulating board 8 has an insulation temperature range of -20°C to 120°C, and an insulation efficiency of up to 90%, which means that the temperature of internal components can be kept stable even under extreme weather conditions, reducing performance degradation or damage caused by high temperature.

[0068] The elastic sealing strip 501 has a wide temperature resistance range of -40°C to 150°C and a compression permanent deformation rate of 10%. These characteristics ensure that good sealing performance can be maintained under different temperature conditions to prevent dust and moisture from intruding.

[0069] The load-bearing weight of the external component slide rail 9 is 30kg-50kg, and the size of the slide rail groove 901 is 50mm-80mm in length and 10mm-30mm in width. This design makes the installation and replacement of internal components more convenient and improves maintenance efficiency.

[0070] The working principle of the rainproof and sun-proof combiner box of the photovoltaic power station is as follows: the rainproof sealing cover 2 covers the top of the combiner box body 1 to prevent rain from falling directly on the box body. The double-layer waterproof eaves 3 are located at the end of the rainproof sealing cover 2 to provide additional rain protection to prevent wind from blowing rain into the bottom of the box body.

[0071] The inclined plate 301 is located obliquely above the double-layer waterproof eaves 3, guiding rainwater to flow to the drainage system to avoid water accumulation and splashing. The U-shaped drainage trough 6 collects rainwater flowing down from the top and sides of the box body and guides it into the water guide pipe 601. The water guide pipe 601 discharges the collected rainwater to prevent water from flowing back into the box body, and the built-in filter 602 prevents impurities from entering the drainage system.

[0072] The sun-proof and heat-insulating board 8 is located inside the inner baffle of the combiner box to block direct sunlight and reduce the internal temperature rise. The heat-insulating coating 801 is applied to the outside of the sun-proof and heat-insulating board 8 to reflect part of the sunlight and reduce heat absorption.

[0073] The double-layer hollow tempered glass 803 is embedded with a tensile grid inner layer 802 to provide physical protection and heat insulation effects.

[0074] The heat-insulating hollow interlayer 804 is located in the double-layer tempered glass to further isolate the external heat transfer. The sun-proof and heat-insulating tile 805 is installed on the inner side of the tempered glass to provide the final thermal protection layer to ensure that the internal components are in a lower temperature environment.

[0075] The elastic sealing strip 501 is installed on the edge of the box door 101 to ensure close contact with the box when closed. The sealing strip groove 5 is opened on the edge of the combiner box body 1 and cooperates with the elastic sealing strip 501 to provide secondary sealing to prevent moisture and dust from penetrating.

[0076] The external buckle slide rail 9 of the components provides a stable slide rail groove 901, which is convenient for component installation and maintenance. The insulating isolation plate 10 is located below the external buckle slide rail to provide electrical isolation to ensure safety. The internal buckle slide rail 11 of the components: cooperates with the external buckle slide rail, and is isolated by the insulating isolation plate 10 to achieve safe fixation of components.

[0077] During the use of the present invention, the combiner box body 1 is placed in an appropriate position to ensure that it is stable and level; a rainproof sealing cover 2 is installed above the combiner box body 1 to ensure that the double-layer waterproof eaves 3 and the inclined plate 301 are correctly installed to prevent rainwater from entering; a waterproof membrane plate 4 is installed on the upper part of the combiner box body 1, and an isolation membrane 401 is arranged on the waterproof membrane plate 4; a membrane plate inner layer honeycomb mesh reinforcement rib 403 is arranged on the inner side of the isolation membrane 401 to enhance its structural strength; and a membrane plate inner layer honeycomb mesh reinforcement rib 403 is arranged on the inner side of the isolation membrane 401 to enhance its structural strength. The interior of the rib 403 is filled with a sealant filling layer 402, and then a waterproof rubber coating 404 is applied to the outside to provide additional waterproof protection; a U-shaped drainage groove 6 is installed on the side of the junction box body 1 and connected to the water pipe 601; a filter screen 602 is arranged in the water pipe 601 to prevent debris in the drainage system from entering; a rainproof inner baffle 7 is installed on the inner side of the junction box body 1, and a sun-proof insulation board 8 is installed on the inner side thereof to prevent rain and sunlight from directly shining on the components.

[0078] A heat-insulating coating 801 is applied to the outside of the sun-proof and heat-insulating board 8 to further improve its sun-proof effect; a tensile grid inner layer 802 is arranged inside the heat-insulating coating 801, and a double-layer hollow tempered glass 803 is embedded to enhance its structural strength and provide additional heat-insulating protection; a sun-proof and heat-insulating tile 805 is installed on the inner side of the double-layer hollow tempered glass 803 to improve its sun-proof effect; an elastic sealing strip 501 is installed at the edge of the box door 101, and a heat-insulating tile 805 is installed at the edge of the combiner box body 1. A sealing strip groove 5 is provided to ensure the sealing of the box body; a component outer buckle slide rail 9 is installed inside the combiner box body 1, and a slide rail groove 901 is provided; an insulating isolation plate 10 is installed below the component outer buckle slide rail 9 to ensure the safety of the components; an inner buckle component slide rail 11 is installed on the inner lower part of the combiner box body 1, and an inner buckle groove 1101 is provided; the component outer buckle slide rail 9 and the component inner buckle slide rail 11 are isolated by the insulating isolation plate 10 to ensure the safety of the components.

[0079] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A rainproof and sunproof combiner box for a photovoltaic power station, comprising a combiner box body (1), wherein the combiner box body (1) is provided with a box door (101), characterized in that: A rainproof sealing cover (2) is arranged above the junction box body (1), a double-layer waterproof eaves (3) is arranged at the end of the rainproof sealing cover (2), an inclined plate (301) is arranged obliquely above the double-layer waterproof eaves (3), a waterproof membrane plate (4) is arranged on the upper part of the junction box body (1), an isolation membrane (401) is arranged on the waterproof membrane plate (4), a membrane plate inner layer honeycomb mesh reinforcement rib (403) is arranged on the inner side of the isolation membrane (401), a sealant filling layer (402) is filled inside the membrane plate inner layer honeycomb mesh reinforcement rib (403), a waterproof rubber coating (404) is arranged outside the sealant filling layer (402), a U-shaped drainage groove (6) is arranged on the side of the junction box body (1), the U-shaped drainage groove (6) is connected to the water pipe (601), and a filter net (602) is arranged inside the water pipe (601).

2. A rainproof and sun-proof combiner box for a photovoltaic power station according to claim 1, characterized in that: A rainproof inner baffle (7) is arranged on the inner side of the combiner box body (1), and a sun-proof and heat-insulating board (8) is arranged on the inner side of the rainproof inner baffle (7).

3. A rainproof and sun-proof combiner box for a photovoltaic power station according to claim 2, characterized in that: The sun-proof and heat-insulating board (8) is coated with a heat-insulating coating (801) on the outside, a tensile-resistant mesh inner layer (802) is provided inside the heat-insulating coating (801), a double-layer hollow tempered glass (803) is embedded in the tensile-resistant mesh inner layer (802), a heat-insulating hollow interlayer (804) is provided in the double-layer hollow tempered glass (803), and a sun-proof and heat-insulating tile (805) is provided on the inner side of the double-layer hollow tempered glass (803).

4. A rainproof and sun-proof combiner box for a photovoltaic power station according to claim 1, characterized in that: An elastic sealing strip (501) is provided at the edge of the box door (101), a sealing strip groove (5) is provided at the edge of the combiner box box (1), and the elastic sealing strip (501) is embedded and matched with the sealing strip groove (5).

5. The rainproof and sun-proof combiner box for a photovoltaic power station according to claim 1, characterized in that: A component external buckle slide rail (9) is arranged inside the combiner box body (1), the component external buckle slide rail (9) is provided with a slide rail groove (901), and an insulating isolation plate (10) is arranged below the component external buckle slide rail (9).

6. A rainproof and sun-proof combiner box for a photovoltaic power station according to claim 1, characterized in that: The lower inner part of the combiner box body (1) is provided with an inner buckle component slide rail (11), the inner buckle component slide rail (11) is provided with an inner buckle groove (1101), and the outer buckle component slide rail (9) and the inner buckle component slide rail (11) are isolated by an insulating isolation plate (10).

7. A method for using a rainproof and sun-proof combiner box in a photovoltaic power station, characterized in that: The following steps are involved: Step 1: Place the combiner box body (1) in an appropriate position to ensure that it is stable and level; install a rainproof sealing cover (2) above the combiner box body (1), and install an inclined plate (301) above the double-layer waterproof eaves (3); Step 2: Install a waterproof membrane plate (4) on the upper part of the combiner box body (1), and arrange an isolation membrane (401) on the waterproof membrane plate (4); and arrange a membrane plate inner layer honeycomb mesh reinforcement rib (403) on the inner side of the isolation membrane (401); Step 3, filling the interior of the honeycomb mesh reinforcement rib (403) of the inner layer of the membrane plate with a sealant filling layer (402), and then coating the exterior with a waterproof rubber coating (404); Step 4: Install a U-shaped drainage trough (6) on the side of the combiner box body (1), and connect it to the water pipe (601); set a filter screen (602) in the water pipe (601); Step 5: Install a rainproof inner baffle (7) on the inner side of the combiner box body (1), and install a sunscreen and heat insulation board (8) on the inner side thereof; Step 6: Apply a heat-insulating coating (801) to the outside of the sun-proof and heat-insulating board (8) to further improve its sun-proof effect; set a tensile grid inner layer (802) inside the heat-insulating coating (801) and embed a double-layer hollow tempered glass (803); install a sun-proof and heat-insulating tile (805) on the inner side of the double-layer hollow tempered glass (803); Step 7: Install an elastic sealing strip (501) at the edge of the box door (101) and open a sealing strip groove (5) at the edge of the combiner box (1); Step 8: Install the component outer buckle slide rail (9) inside the combiner box body (1) and open the slide rail groove (901); install the insulating isolation plate (10) below the component outer buckle slide rail (9); install the component inner buckle slide rail (11) on the inner lower part of the combiner box body (1) and open the inner buckle groove (1101); isolate the component outer buckle slide rail (9) and the component inner buckle slide rail (11) through the insulating isolation plate (10).

8. The method for using a rainproof and sun-proof combiner box in a photovoltaic power station according to claim 7, characterized in that: The double-layer waterproof eaves (3) of the rainproof sealing cover (2) have a width of 50 mm and an inclination angle of 30 degrees, the waterproof membrane plate (4) has a thickness of 3 mm, and the isolation membrane (401) has a thickness of 0.5 mm; The thickness of the sealant filling layer (402) is 2 mm, the thickness of the external waterproof rubber coating (404) is 1 mm, the load-bearing weight of the component external buckle slide rail (9) is 30 kg-50 kg, and the size of the slide rail groove (901) is 50 mm-80 mm in length and 10 mm-30 mm in width.

9. The method for using a rainproof and sun-proof combiner box in a photovoltaic power station according to claim 8, characterized in that: The heat insulation temperature range of the sun-proof and heat-insulating board (8) is -20°C to 120°C, and the heat insulation efficiency is 90%. The temperature resistance range of the elastic sealing strip (501) is -40°C to 150°C, and the compression deformation rate is 10%.

10. The method for using a rainproof and sun-proof combiner box in a photovoltaic power station according to claim 9, characterized in that: The honeycomb mesh reinforcement ribs (403) of the inner layer of the membrane plate are of a honeycomb structure, and the pore size of the filter mesh (602) is ≤3 mm.

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