Photovoltaic coupling box

Abstract

The utility model discloses a photovoltaic coupling box, and belongs to the field of photovoltaic technology. The photovoltaic coupling box comprises a box body, a supporting frame, an inverter and an electric appliance box. The inverter and the electric appliance box are connected to the support frame; the supporting frame comprises a component supporting part, and the component supporting part comprises a first connecting rod, a first auxiliary connecting rod and a first supporting rod. The two first connecting rods are arranged in parallel, each first connecting rod is divided into a first section and a second section, the first section is connected with the electric appliance box, and the second section is connected with the inverter; the two first auxiliary connecting rods are arranged in parallel, the two ends of one first auxiliary connecting rod are connected with the two first sections, and the two ends of the other first auxiliary connecting rod are connected with the two second sections. The two first supporting rods are symmetrically arranged on the two sides of the two first connecting rods, and the first supporting rods are connected with the first connecting rods on the corresponding sides and connected to the junction of the first section and the second section. The supporting frame of the photovoltaic coupling box adopts a structure of a plurality of parallel rod pieces at intervals, air circulation in the box body is optimized, heat dissipation of the inverter and the electric appliance box is accelerated, and stable operation of the assembly is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic technology, and in particular to a photovoltaic coupling box. BACKGROUND

[0002] In a photovoltaic system, the photovoltaic coupling box as a key component undertakes important responsibilities such as connection, distribution and protection of photovoltaic power. With the rapid development of the photovoltaic industry, the performance requirements for the photovoltaic coupling box are increasingly stringent. Currently, the support frame design inside the photovoltaic coupling box generally has defects. The traditional support frame only focuses on stable support of internal components, but completely ignores the heat dissipation requirement. In actual operation, the internal components of the photovoltaic coupling box continuously generate a large amount of heat, which will seriously affect the performance and service life of the components if not dissipated in time and effectively. Since the support frame cannot create favorable conditions for heat dissipation, heat accumulates in the box, causing the temperature of the components to be too high. This not only reduces the power generation efficiency of the photovoltaic coupling box, but also increases the probability of failure, frequent maintenance and replacement of components, greatly increasing the operation and maintenance cost, and seriously hindering the stable and efficient operation of the photovoltaic system. SUMMARY

[0003] The present application at least solves one of the technical problems in the related art to some extent.

[0004] Therefore, the present application aims to provide a photovoltaic coupling box, which is innovatively designed for the support frame inside the photovoltaic coupling box to create favorable conditions for heat dissipation of internal components and improve power generation efficiency.

[0005] To achieve the above-mentioned purpose, the present application provides a photovoltaic coupling box, comprising:

[0006] a box body, the box body being provided with an air inlet and an air outlet;

[0007] a support frame, the support frame being arranged in the box body;

[0008] an inverter, the inverter being arranged in the box body and connected to the support frame;

[0009] an electrical box, the electrical box being arranged in the box body and connected to the support frame;

[0010] The support frame comprises a component support portion, and the component support portion comprises:

[0011] two first connecting rods, the two first connecting rods being arranged in parallel at a certain distance apart, the first connecting rod being divided into a first section and a second section along the length direction, the first section being connected to the electrical box, and the second section being connected to the inverter;

[0012] The first auxiliary connecting rod is provided with two first auxiliary connecting rods, which are arranged in parallel at a certain distance, and the two ends of one first auxiliary connecting rod are respectively connected to the first sections of the two first connecting rods, and the two ends of the other first auxiliary connecting rod are respectively connected to the second sections of the two first connecting rods.

[0013] The first support rod is provided with two first support rods, which are symmetrically arranged on both sides of the two first connecting rods, and the first support rod is vertically connected to the corresponding side of the first connecting rod. The connection position of the first support rod is located at the junction of the first section and the second section.

[0014] The above technical scheme has the following advantages or beneficial effects: two parallel first connecting rods are connected to the electric appliance box and the inverter in sections, and form a grid support structure with the first auxiliary connecting rod. This design uniformly distributes the weight of the electric appliance box and the inverter, improves the carrying capacity of the support frame, and forms multiple air flow channels in the grid gap, accelerates air circulation in the box, and improves heat dissipation efficiency.

[0015] In some embodiments of the present application, the component support part further comprises a first partition rod and a second partition rod, the first partition rod is arranged on the two first support rods, and the first partition rod is located on the same side as the first section of the first connecting rod. The second partition rod is arranged on the two first support rods, and the second partition rod is located on the same side as the second section of the first connecting rod.

[0016] The above technical scheme has the following advantages or beneficial effects: the first partition rod and the second partition rod are respectively fixed on both sides of the first support rod, and correspond to the sections of the first connecting rod. The partition rod forms a physical barrier to prevent displacement of the electric appliance box and the inverter during operation, and simultaneously divides the air flow into independent heat dissipation channels, which can effectively enhance the heat exchange efficiency of the high-heat area.

[0017] In some embodiments of the present application, the component support part further comprises a plurality of first connecting pieces, the first connecting pieces are connected to the first partition rod and the second partition rod, the first connecting pieces connected to the first partition rod are used to connect the electric appliance box, and the first connecting pieces connected to the second partition rod are used to connect the inverter.

[0018] The above technical scheme has the following advantages or beneficial effects: the first connecting pieces are respectively connected to the electric appliance box and the inverter, forming a rigid connection node, which ensures the installation precision of the electric appliance box and the inverter.

[0019] In some embodiments of the present application, the support frame further comprises a waterproof support part, which is arranged below the component support part, and comprises a second connecting rod and a second support rod; the second connecting rod is provided in two, and the two second connecting rods are arranged in parallel at a certain distance apart, and are connected to the box; the second support rod is provided in two, and the two second support rods are arranged on the two second connecting rods respectively, one end of the second support rod is connected to the second connecting rod, and the other end of the second support rod is connected to the first connecting rod.

[0020] The waterproof support part adopts a three-dimensional structure of the second connecting rod cooperating with the second support rod, and the second connecting rod is fixed to the box. This structure can lift the component support part of the support frame as a whole to a certain height, effectively blocking the invasion of ground moisture, and the three-dimensional support can improve the overall rigidity.

[0021] In some embodiments of the present application, the waterproof support part further comprises a second auxiliary connecting rod, which is provided in two, and the two second auxiliary connecting rods are arranged below the two first auxiliary connecting rods respectively, and the two ends of the second auxiliary connecting rod are connected to the two second connecting rods respectively.

[0022] The second auxiliary connecting rod is arranged in parallel below the first auxiliary connecting rod to form a double-layer support system, which improves the structural stability, optimizes the air flow path, and enhances heat dissipation.

[0023] In some embodiments of the present application, the waterproof support part further comprises a plurality of second connecting pieces, which are connected to the second connecting rod, and a second mounting hole is formed in the second connecting piece to connect the box.

[0024] The second connecting piece is fixed to the box at multiple points through the second mounting hole to form a rigid connection interface. This design increases the contact area between the support frame and the box, and the connection is stable. In addition, it can also improve the heat conduction efficiency and optimize the heat dissipation mode.

[0025] In some embodiments of the present application, the waterproof support part further comprises a second inclined support rod, one end of which is connected to the first connecting rod, and the other end is connected to the second connecting rod.

[0026] The second inclined support rod connects the first connecting rod and the second connecting rod to form an L-shaped reinforcing structure at the junction of the sections. This improves the safety factor of the stress concentration area, effectively resists alternating stress caused by thermal expansion and cold contraction, and prolongs the service life of the support frame.

[0027] In some embodiments of the present application, the component support part further comprises a first inclined support rod, one end of which is connected to the first support rod, and the other end is connected to the first connecting rod.

[0028] The technical scheme has the advantages or beneficial effects that the first inclined support rod connects the first support rod and the first connecting rod to form a triangular stable structure, which improves the connection stability without affecting heat dissipation.

[0029] In some embodiments of the present application, the photovoltaic coupling box further comprises a protective cover, which is arranged in the box body and connected to the top end of the first support rod.

[0030] The technical scheme has the advantages or beneficial effects that the protective cover is connected to the top end of the first support rod, which prevents dust and other foreign matters from falling on the inverter and the electrical appliance box and ensures the smoothness of the heat dissipation channel.

[0031] In some embodiments of the present application, the photovoltaic coupling box further comprises a fan, which is arranged in the box body and used to drive outdoor air to flow through the support frame after entering the air inlet and then flow out of the air outlet.

[0032] The technical scheme has the advantages or beneficial effects that the fan, the air inlet and the air outlet of the box body form a forced convection system, which, in cooperation with the flow guide structure of the support frame, enables the air in the box body to complete a cycle in a short time and ensures that the temperature in the box body is maintained within the working requirement range. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A structural diagram of a photovoltaic coupling box according to some embodiments;

[0034] Figure 2 A structural diagram of a support frame in a box body according to some embodiments;

[0035] Figure 3 A structural diagram of an inverter and an electrical appliance box on a support frame according to some embodiments;

[0036] Figure 4 A side view of an inverter and an electrical appliance box on a support frame according to some embodiments;

[0037] Figure 5 A structural diagram of a support frame according to some embodiments;

[0038] Figure 6 A structural diagram of a support frame at another angle according to some embodiments;

[0039] Figure 7 A side view of a support frame according to some embodiments;

[0040] Figure 8 A front view of a support frame according to some embodiments;

[0041] Figure 9 FIG. 9 is a rear view of the support frame according to some embodiments;

[0042] Figure 10 FIG. 10 is a bottom view of the support frame according to some embodiments;

[0043] Figure 11 FIG. 11 is an exploded view of the first partition rod and the first connecting member according to some embodiments;

[0044] Figure 12 FIG. 12 is a front view of the first partition rod and the first connecting member according to some embodiments;

[0045] Figure 13 FIG. 13 is a side view of the first partition rod and the first connecting member according to some embodiments;

[0046] Figure 14 FIG. 14 is an exploded view of the second partition rod and the first connecting member according to some embodiments;

[0047] Figure 15 FIG. 15 is a front view of the second partition rod and the first connecting member according to some embodiments;

[0048] Figure 16 FIG. 16 is a side view of the second partition rod and the first connecting member according to some embodiments.

[0049] In the above figures: 1, cabinet; 2, support frame; 21, component support portion; 211, first connecting rod; 201, first section; 202, second section; 212, first auxiliary connecting rod; 213, first support rod; 214, first partition rod; 215, second partition rod; 216, first connecting member; 217, first diagonal support rod; 22, waterproof support portion; 221, second connecting rod; 222, second support rod; 223, second auxiliary connecting rod; 224, second connecting member; 225, second diagonal support rod; 3, inverter; 4, electrical appliance box; 5, protective cover; 6, fan. DETAILED DESCRIPTION

[0050] In order to make the purpose and implementation of the present application more clear, the following will combine the drawings in the exemplary embodiments of the present application to clearly and completely describe the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only some of the embodiments of the present application, but not all the embodiments.

[0051] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0052] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of the present application, it needs to be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] In the following, the utility model is described in detail through exemplary embodiments. However, it should be understood that the elements, structures and features in one embodiment can also be beneficially combined into other embodiments without further description.

[0055] In the present application, the photovoltaic coupling box realizes the conversion and distribution of photovoltaic power through the cooperative work of the inverter and the electrical appliance box. Its working process includes four core links of power generation, inversion, energy distribution and heat exchange, which completes the conversion of solar energy into stable usable electric energy through modular cooperation.

[0056] The inverter converts the direct current generated by the photovoltaic panel into alternating current that meets the requirements of the power grid, with high conversion efficiency.

[0057] The electrical appliance box integrates control circuit and protection device inside. It can monitor the running state of the inverter in real time, and can also adjust the power distribution strategy according to the change of the load. Part of the electric energy will be directly supplied to the load to meet the immediate power demand; another part of the electric energy will be stored in the external energy storage device for subsequent use.

[0058] When the inverter and the electrical appliance box are working, heat is generated to cause the temperature of the surrounding air to rise. At this time, the cold air from the outside enters the box body, and the hot air is discharged from the box body, forming a directional air flow, realizing air circulation in the box body, and effectively maintaining the internal temperature.

[0059] Hereinafter, the embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0060] As shown in the accompanying drawings Figures 1 to 6 In one illustrative embodiment of the photovoltaic coupling box of the present application, the photovoltaic coupling box comprises a box body 1, a support frame 2, an inverter 3 and an electrical appliance box 4. The box body 1 is provided with an air inlet and an air outlet, and a chamber is formed inside the box body 1 to accommodate various internal components. The box body 1 is used to protect the various components inside it; the support frame 2 is arranged in the box body 1; the inverter 3 is arranged in the box body 1, and the inverter 3 is connected to the support frame 2; the electrical appliance box 4 is arranged in the box body 1, and the electrical appliance box 4 is connected to the support frame 2.

[0061] The support frame 2 comprises a component support part 21, which comprises: a first connecting rod 211, a first auxiliary connecting rod 212 and a first support rod 213. The first connecting rod 211 is provided with two, and the two first connecting rods 211 are arranged in parallel at a certain distance apart. The first connecting rod 211 is divided into a first section 201 and a second section 202 along the length direction, the first section 201 is connected to the electrical appliance box 4, and the second section 202 is connected to the inverter 3; the first auxiliary connecting rod 212 is provided with two, and the two first auxiliary connecting rods 212 are arranged in parallel at a certain distance apart. The two ends of one first auxiliary connecting rod 212 are respectively connected to the first sections 201 of the two first connecting rods 211, and the two ends of the other first auxiliary connecting rod 212 are respectively connected to the second sections 202 of the two first connecting rods 211. The first support rod 213 is provided with two, and the two first support rods 213 are symmetrically arranged on both sides of the two first connecting rods 211. The first support rod 213 is connected to the corresponding side of the first connecting rod 211 perpendicularly, and the connection position of the first support rod 213 is located at the junction of the first section 201 and the second section 202.

[0062] When the photovoltaic coupling box is working, the heat generated by the inverter 3 and the electrical box 4 is dissipated through the airflow inside the box 1: cool air enters the chamber from the air inlet of the box 1, flows along the support frame 2, passes over the surfaces of the inverter 3 and the electrical box 4 respectively, carries away the heat, and is then discharged from the air outlet. The structural design of the support frame 2 plays a key role in the heat dissipation process. First, the segmented layout of the first connecting rod 211 fixes the inverter 3 and the electrical box 4 to the first section 201 and the second section 202 respectively, forming independent heat dissipation spaces; two first auxiliary connecting rods 212 connect the first section 201 and the second section 202 respectively, which not only enhances the overall rigidity but also reserves airflow channels between the modules; the symmetrically arranged first support rods 213 are vertically connected to the junction of the first connecting rods 211, which not only provides stable support for the modules but also guides the airflow along the support structure to form an efficient heat dissipation path, effectively improving the heat dissipation efficiency.

[0063] In some embodiments, as shown in the appendix Figures 6 to 10 As shown, the component support 21 also includes a first partition rod 214 and a second partition rod 215. The first partition rod 214 is disposed on two first support rods 213 and is located on the same side as the first section 201 of the first connecting rod 211. The second partition rod 215 is disposed on two first support rods 213 and is located on the same side as the second section 202 of the first connecting rod 211. After adding the first partition rod 214 and the second partition rod 215, the heat dissipation and structural performance of the support frame 2 are further optimized. The first partition rod 214 is set on the same side as the first section 201, forming a certain physical separation between the electrical box 4 area and the inverter 3 area in the vertical direction, effectively preventing the disorderly diffusion of high-temperature airflow in the cavity. The second partition rod 215 is set corresponding to the second section 202, and together with the first support rod 213, it forms an independent heat dissipation air duct, optimizing the flow path of cold air and avoiding heat accumulation. At the same time, the two pairs of partition rods and the first support rod 213 form a grid-like support frame, which improves the deformation resistance of the support frame 2 without increasing the amount of material used, ensuring that the inverter 3 and the electrical box 4 maintain a stable connection under long-term vibration environment. The flow guiding structure on the surface of the partition rod can also accelerate air turbulence and enhance heat exchange efficiency.

[0064] In some embodiments, as shown in the appendix Figure 6 and attached Figures 11 to 16As shown, the component support 21 also includes multiple first connectors 216. The first connectors 216 are connected to the first partition rod 214 and the second partition rod 215. The first connector 216 connected to the first partition rod 214 is used to connect the electrical box 4, and the first connector 216 connected to the second partition rod 215 is used to connect the inverter 3. The arrangement of the first connectors 216 brings several beneficial effects. In terms of heat dissipation, by connecting the electrical box 4 and the inverter 3 to the first partition rod 214 and the second partition rod 215 respectively through the first connectors 216, a certain distance can be maintained between the electrical box 4 and the inverter 3 and the partition rods, avoiding close contact that would lead to heat accumulation. This creates an airflow channel between the first partition rod 214 and the second partition rod 215, promoting heat exchange and enhancing heat dissipation. From the perspective of structural stability, the first connectors 216 further strengthen the overall structure of the support frame 2. They securely fix the electrical box 4 and the inverter 3 to the component support 21, making the connection of the components inside the entire photovoltaic coupling box tighter and more reliable. When the photovoltaic coupling box is subjected to external vibrations or impacts, it can effectively reduce the shaking of the electrical box 4 and the inverter 3, reduce the probability of problems such as loose wiring and connection failures caused by component shaking, and ensure the stability and safety of equipment operation.

[0065] In some embodiments, as shown in the appendix Figures 11 to 16 As shown, the first separator 214 and the second separator 215 are "V"-shaped separators. The integrated structure reduces splicing nodes, enhances overall rigidity, and reduces the risk of deformation caused by stress concentration. The acute angle structure of the first separator 214 and the second separator 215 can achieve a larger support span in a limited space, providing a more stable mounting base for the electrical box 4 and the inverter 3. Combined with the multi-point fixing of the first connector 216, it can effectively offset the vibration stress generated during equipment operation and improve the overall seismic performance of the photovoltaic coupling box.

[0066] The first connector 216 can be selected in different structural forms. In some embodiments, such as the attached figure... Figures 11 to 13 As shown, the first connector 216 adopts a bent plate structure, and its double-sided connection design brings significant technical advantages. The three-dimensional bending angle of the bent plate can convert the gravitational load of the electrical box 4 or inverter 3 into uniform pressure on the partition rod, avoiding single-point stress concentration, and dispersing installation stress by increasing the contact area through the contact surface of the bent plate. In some embodiments, as shown in the attached... Figures 14 to 16As shown, the first connecting piece 216 adds a connecting plate to the bent plate structure, which is arranged on both sides of the bent plate structure to connect the first support rod 213 of the support frame 2. The connecting plate forms a triangular mechanical support system with the bent plate and the first support rod 213, which enhances the anti-overturning ability of the electrical box 4 and the inverter 3 through three-point fixation, effectively resisting the torque vibration generated during the operation of the photovoltaic coupling box. The rigid design of this three-edge connection evenly conducts the installation stress of the electrical box 4 and the inverter 3 to the overall frame of the support frame 2 through the connecting plate, prolonging the service life of the key fasteners.

[0067] In some embodiments, as shown in the accompanying drawings Figures 11 to 13 As shown, the first connecting piece 216 is welded to the electrical box 4 or the inverter 3, and the connection is firm, making the first connecting piece 216 and the electrical box 4 or the inverter 3 form an integral whole, enhancing the overall stability, effectively resisting vibration and impact, reducing the risk of loosening, ensuring long-term stable operation of the equipment, and being suitable for use in harsh working conditions.

[0068] In some embodiments, as shown in the accompanying drawings Figures 14 to 16 As shown, the first connecting piece 216 is provided with a first mounting hole, which is connected to the electrical box 4 or the inverter 3 through a bolt. This connection method is convenient for installation and disassembly, facilitating later maintenance, repair and replacement of parts, and can flexibly adjust the connection position to quickly complete the assembly and disassembly of the equipment according to actual needs, improving work efficiency.

[0069] In some embodiments, as shown in the accompanying drawings Figures 11 to 13 As shown, when there is no mounting hole on the first connecting piece 216, a hanging piece can be installed on the electrical box 4 or the inverter 3, and the electrical box 4 or the inverter 3 is hung on the first connecting piece 216 through the hanging piece. This connection method can make the installation and disassembly of the electrical box 4 and the inverter 3 more convenient. When performing equipment maintenance, repair or replacement of parts, workers can relatively easily complete the disassembly and assembly of the electrical box 4 and the inverter 3, improving the maintenance efficiency.

[0070] In some embodiments, as shown in the accompanying drawings Figures 5 to 9As shown, the support frame 2 further comprises a waterproof support part 22, which is arranged below the component support part 21 and comprises second connecting rods 221 and second support rods 222. The second connecting rods 221 are arranged in parallel at a certain distance and are connected to the box 1. The second support rods 222 are arranged on the second connecting rods 221 and are connected to the first connecting rods 211. The second connecting rods 221 and the second support rods 222 form a bottom support frame, and the second support rods 222 have a certain height, which can effectively prevent rainwater or condensed water from penetrating into the inverter 3 and the electrical box 4. The second support rods 222 rigidly connect the second connecting rods 221 and the first connecting rods 211, thereby enhancing the overall anti-deformation ability of the support frame 2 and ensuring the stability of the inverter 3 and the electrical box 4 in a long-term outdoor vibration environment. The waterproof support part 22 and the component support part 21 are cooperatively designed to improve the reliability of the equipment in operation through structural optimization.

[0071] In some embodiments, as shown in FIGS. 1-3, the waterproof support part 22 further comprises second auxiliary connecting rods 223, which are arranged below the first auxiliary connecting rods 212 and are connected to the second connecting rods 221. Figure 6 、 Figure 8 and Figure 9 As shown, the waterproof support part 22 further comprises second auxiliary connecting rods 223, which are arranged below the first auxiliary connecting rods 212 and are connected to the second connecting rods 221. The second auxiliary connecting rods 223 and the second connecting rods 221 form a bottom support frame, which increases the horizontal connection points and improves the rigidity of the bottom structure. The second auxiliary connecting rods 223 and the first auxiliary connecting rods 212 form an upper and lower staggered support, which builds a three-dimensional support network inside the box 1, disperses the vibration energy generated by the inverter 3 and the electrical box 4, and reduces the resonance effect. The layout of the double-layer auxiliary connecting rods also reserves more uniform air flow gaps at the bottom of the box 1, which meets the IP protection level and enhances the bottom heat dissipation capacity through structural optimization, so that the waterproof support part 22 has the dual functions of protection and heat management.

[0072] In some embodiments, as shown in FIGS. 1-3, the waterproof support part 22 further comprises second auxiliary connecting rods 223, which are arranged below the first auxiliary connecting rods 212 and are connected to the second connecting rods 221. Figure 10As shown, the waterproof support part 22 further comprises a plurality of second connecting pieces 224 connected to the second connecting rod 221, and a second mounting hole is formed in the second connecting piece 224 to connect the box body 1. The second connecting piece 224 is arranged at both ends of the second connecting piece 224. At one end of the second connecting piece 224, two second connecting pieces 224 can be arranged on both sides of the second connecting piece 224, and the second connecting pieces 224 on both sides can be staggered. Four-point fixation is formed between the second mounting hole and the box body 1, and the staggered arrangement converts single-point concentrated load into dispersed support, effectively inhibiting the deflection deformation of the connecting rod 221 under the long-term action of gravity; the modular design of the second mounting hole allows the box body 1 and the support part 22 to be quickly assembled by bolts, which not only ensures the connection strength but also facilitates local disassembly during later maintenance; in addition, the symmetrical distribution of the second connecting piece 224 at both ends reserves a flow guide gap for the bottom drainage of the box body 1, avoiding the water accumulation caused by the dense connection points, so that the waterproof support part 22 realizes IP protection while maintaining structural lightweight and installation flexibility.

[0073] In some embodiments, as shown in the accompanying drawings Figures 6 to 9 As shown, the waterproof support part 22 further comprises a second inclined brace 225, one end of which is connected to the first connecting rod 211 and the other end of which is connected to the second connecting rod 221. The second inclined brace 225 rigidly connects the first connecting rod 211 and the second connecting rod 221, forms an L-shaped reinforcing structure at the connection junction, effectively disperses the gravity load of the inverter 3 and the electrical appliance box 4, and enhances the anti-overturning capability; the inclined angle design can make the condensed water generated during operation flow along the surface of the rod body to the direction of the drain hole, and at the same time form a flow guide gap between the rod body and the connecting rod, accelerate the heat exchange between the cold air at the bottom and the high temperature area, and realize the dual optimization of structural strength and heat dissipation performance.

[0074] In some embodiments, as shown in the accompanying drawings Figures 6 to 9 As shown, the component support part 21 further comprises a first inclined brace 217, one end of which is connected to the first support rod 213 and the other end of which is connected to the first connecting rod 211. The first inclined brace 217 connects the first support rod 213 and the first connecting rod 211 to form a stable triangular structure, which improves the support stiffness without increasing the amount of material and affecting heat dissipation, and effectively resists electromagnetic vibration generated during operation of the inverter 3.

[0075] In some embodiments, as shown in the accompanying drawings Figures 2 to 4As shown, the photovoltaic coupling box further comprises a protective cover 5 arranged in the box body 1, and the protective cover 5 is connected to the top end of the first support rod 213. The protective cover 5 covers the top end of the first support rod 213 and extends to the area of the electrical box 4 and the inverter 3. The condensate water or dust possibly falling from the top is blocked by the curved structure, and at the same time, a flow guiding gap is reserved between the cover body and the top of the box body 1, so that the upward hot air flow forms a vortex area on the surface of the cover body, avoiding the retention of hot air and utilizing the surface area of the cover body to assist heat dissipation, thereby improving the overall heat management efficiency while meeting the IP protection level.

[0076] In some embodiments, as shown in the accompanying drawings Figures 1 to 2 As shown, the photovoltaic coupling box further comprises a fan 6 arranged in the box body 1, and the fan 6 is used to drive outdoor air to flow through the support frame 2 after entering the air inlet and then flow out of the air outlet. The fan 6 drives cold air to enter the air inlet and then quickly flow through the electrical box 4 and the inverter 3 along the support frame 2 through a directional air flow driving mechanism, thereby significantly improving the heat dissipation efficiency; the fan 6 is cooperatively designed with the flow guiding channel of the support frame 2 to ensure the uniformity of the air flow while reducing the energy consumption, and the fan 6 is matched with the optimized air outlet position of the box body 1 to form a complete heat dissipation circulation system, thereby ensuring the stable operation of the equipment in extreme environments.

[0077] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0078] For the convenience of explanation, the above description has been made in combination with specific embodiments. However, the above exemplary discussion is not intended to exhaust or limit the embodiments to the specific forms disclosed above. Various modifications and variations can be derived according to the above teachings. The selection and description of the above embodiments are for better explanation of the principles and practical applications, so that those skilled in the art can better use the embodiments and various different modified embodiments suitable for specific use considerations.

Claims

1. A photovoltaic coupling box, characterized in that, include: The enclosure is equipped with an air inlet and an air outlet. A support frame, which is disposed inside the box; An inverter is housed within the enclosure and connected to the support frame. An electrical box is disposed inside the housing and connected to the support frame; The support frame includes a component support portion, which includes: The first connecting rod is provided in two parts, which are arranged in parallel at a predetermined distance. The first connecting rod is divided into a first section and a second section along its length. The first section is connected to the electrical box, and the second section is connected to the inverter. The first auxiliary connecting rod is provided in two parts, which are arranged in parallel at a predetermined distance. The two ends of one first auxiliary connecting rod are respectively connected to the first sections of the two first connecting rods, and the two ends of the other first auxiliary connecting rod are respectively connected to the second sections of the two first connecting rods. The first support rod is provided in two parts, which are symmetrically arranged on both sides of the two first connecting rods. The first support rod is perpendicularly connected to the first connecting rod on the corresponding side, and the connection position of the first support rod is located at the junction of the first section and the second section.

2. The photovoltaic coupling box according to claim 1, characterized in that, The component support also includes a first separator rod and a second separator rod. The first separator rod is disposed on the two first support rods and is located on the same side as the first section of the first connecting rod. The second separator rod is disposed on the two first support rods and is located on the same side as the second section of the first connecting rod.

3. The photovoltaic coupling box according to claim 2, characterized in that, The component support also includes a plurality of first connectors, which are connected to the first partition rod and the second partition rod. The first connector connected to the first partition rod is used to connect to the electrical box, and the first connector connected to the second partition rod is used to connect to the inverter.

4. The photovoltaic coupling box according to claim 1, characterized in that, The support frame also includes a waterproof support section located below the component support section. The waterproof support section includes a second connecting rod and a second support rod. There are two second connecting rods, which are arranged parallel to each other at a predetermined distance and are connected to the housing. There are also two second support rods, which are respectively located on the two second connecting rods. One end of the second support rod is connected to the second connecting rod, and the other end of the second support rod is connected to the first connecting rod.

5. The photovoltaic coupling box according to claim 4, characterized in that, The waterproof support also includes a second auxiliary connecting rod. There are two second auxiliary connecting rods, which are respectively located below the two first auxiliary connecting rods. The two ends of the second auxiliary connecting rods are respectively connected to the two second connecting rods.

6. The photovoltaic coupling box according to claim 4, characterized in that, The waterproof support also includes a plurality of second connectors, which are connected to the second connecting rod. The second connectors have second mounting holes for connecting to the housing.

7. The photovoltaic coupling box according to claim 4, characterized in that, The waterproof support also includes a second diagonal brace, one end of which is connected to the first connecting rod and the other end of which is connected to the second connecting rod.

8. The photovoltaic coupling box according to claim 1, characterized in that, The component support also includes a first diagonal brace, one end of which is connected to the first support rod and the other end of which is connected to the first connecting rod.

9. The photovoltaic coupling box according to claim 1, characterized in that, It also includes a protective cover, which is disposed inside the box and connected to the top of the first support rod.

10. The photovoltaic coupling box according to claim 1, characterized in that, It also includes a fan, which is located inside the housing. The fan is used to drive outdoor air through the air inlet, through the support frame, and out through the air outlet.

Images