A transformer for photovoltaic solar inverter power supply

Abstract

The application provides a transformer for photovoltaic solar inverter power supply, a self-rotating heat exhaust cap also plays a heat dissipation role to effectively exhaust the heat generated in the working process of a magnetic core mechanism and a winding mechanism. Two sliding blocks in a waterproof threading mechanism are pushed away from each other and compressed to move the compression springs, so as to ensure that the threading hole has a larger space to accommodate the conductive wire. The input conductive wire of the transformer is threaded through the threading hole in the soft sealing threading block. The output conductive wire is threaded through the threading hole in the other soft sealing threading block. The sliding blocks are loosened, the compression springs return to the elastic deformation, the extrusion block is inserted into the extrusion groove and extruded against the soft sealing threading block through the driving of the sliding blocks, so as to fix the input conductive wire and the output conductive wire in the two soft sealing threading blocks. Rainwater is prevented from entering the shell through the threading hole along the wire.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of transformers, in particular to a transformer for photovoltaic solar inverter power supply. BACKGROUND

[0002] The photovoltaic power generation system in China is mainly a direct current system, that is, the electric energy generated by solar cells is used to charge storage batteries, and the storage batteries directly supply power to loads. For example, the solar user lighting system used more in the northwest region of China and the microwave station power supply system far from the power grid are both direct current systems. The direct current system has simple structure and low cost. However, due to the difference in direct current voltage of loads, it is difficult to realize standardization and compatibility of the system, especially for civil power, since most of them are alternating current loads, it is difficult for photovoltaic power supply with direct current power to enter the market as a commodity. The inverter converts direct current into alternating current. If the direct current voltage is low, the alternating current transformer is used to step up the voltage, that is, to obtain standard alternating current voltage and frequency.

[0003] However, the traditional solar inverter power supply transformer is mostly placed outdoors, so the waterproof performance requirement is relatively high. However, when heavy rainfall occurs, rainwater will enter the traditional solar inverter power supply transformer through the wire hole along the wire, which has the risk of short circuit. SUMMARY

[0004] Therefore, it is necessary to provide a photovoltaic solar inverter power supply transformer aiming at the technical problem that when heavy rainfall occurs, rainwater will enter the traditional solar inverter power supply transformer through the wire hole along the wire, which has the risk of short circuit.

[0005] A photovoltaic solar inverter power supply transformer, comprising: a receiving seat, a self-rotating heat exhaust cap, a shell, a waterproof cover, a magnetic core mechanism, a winding mechanism, and two waterproof wire passing mechanisms.

[0006] The self-rotating heat exhaust cap is arranged on the receiving seat, the shell is connected with the receiving seat, and the shell is arranged in the self-rotating heat exhaust cap. An opening is formed in the top of the self-rotating heat exhaust cap, the top of the shell passes through the opening, the waterproof cover is arranged on the top of the shell, and the winding mechanism is arranged on the magnetic core mechanism. The magnetic core mechanism and the winding mechanism are both accommodated in the shell. The magnetic core mechanism is connected with the shell.

[0007] The shell bottom is provided with a through hole on each side, and each waterproof threading mechanism is arranged at the through hole; the waterproof threading mechanism comprises a soft sealing threading block and two extrusion assemblies; the soft sealing threading block is in interference fit with the through hole, the soft sealing threading block is inserted into the through hole and connected with the shell; the two extrusion assemblies are symmetrically arranged on the two sides of the soft sealing threading block; the soft sealing threading block is provided with an extrusion groove on each side; the soft sealing threading block is provided with a threading hole, and the threading hole penetrates the soft sealing threading block;

[0008] The extrusion assembly comprises a sliding plate, a sliding block, a plurality of compression springs and an extrusion block; one end of the sliding plate is connected with the inner wall of the through hole, and the width of the sliding plate is the same as the width of the through hole; the sliding block is matched with the through hole, and the sliding block is inserted into the through hole and is in sliding connection with the shell; the sliding block is provided with a sliding groove, the sliding groove is matched with the sliding plate, the sliding plate is inserted into the sliding groove and is in sliding connection with the sliding block; each compression spring is accommodated in the sliding groove, one end of each compression spring is connected with the sliding plate, and the end of each compression spring away from the sliding plate is connected with the bottom of the sliding groove; the end of the sliding block away from the sliding plate is connected with the extrusion block, the extrusion block is matched with the extrusion groove, and each extrusion block is inserted into the extrusion groove and extrudes the soft sealing threading block.

[0009] In one embodiment, the photovoltaic solar inverter power supply transformer further comprises a top heat dissipation mechanism, the top heat dissipation mechanism comprises a heat dissipation ventilation pipe, two support rods and a rain cover; the heat dissipation ventilation pipe is arranged at the top of the shell, one end of the heat dissipation ventilation pipe is in communication with the middle area of the top of the shell, and the end of the heat dissipation ventilation pipe penetrating through the waterproof cover is connected with the rain cover through the two support rods; the two support rods are symmetrically arranged on the two sides of the heat dissipation ventilation pipe.

[0010] In one embodiment, the rain cover is a hemispherical shell structure.

[0011] In one embodiment, the heat dissipation ventilation pipe and the shell are integrally formed.

[0012] In one embodiment, the heat dissipation ventilation pipe and the waterproof cover are integrally formed.

[0013] In one embodiment, the sliding plate and the shell are integrally formed.

[0014] In one embodiment, the extrusion block and the sliding block are integrally formed.

[0015] In one embodiment, the outer side wall of the shell is evenly provided with a plurality of heat dissipation holes.

[0016] In one embodiment, the shell is provided with a water blocking inclined plate at each heat dissipation hole.

[0017] In one embodiment, the waterproof cover is a cone structure.

[0018] In the working process of the above-mentioned photovoltaic solar inverter power supply transformer, the waterproof cover and the self-rotating heat dissipation hat form a first waterproof layer to protect the shell, the magnetic core mechanism and the winding mechanism. The shell is a second waterproof layer to protect the magnetic core mechanism and the winding mechanism. The self-rotating heat dissipation hat also plays a heat dissipation role to effectively discharge the heat generated by the magnetic core mechanism and the winding mechanism in the working process. The two sliding blocks in the waterproof threading mechanism are pushed away from each other and compress the compression springs to move, so as to ensure that the threading hole has a larger space to accommodate the conductive wire. The input conductive wire of the above-mentioned photovoltaic solar inverter power supply transformer is threaded through the threading hole formed in the soft sealing threading block. The output conductive wire is threaded through the threading hole formed in the other soft sealing threading block. Loosen the sliding block, and the compression springs return to the elastic deformation. The sliding block drives the extrusion block to be inserted into the extrusion groove and extruded against the soft sealing threading block, so as to fix the input conductive wire and the output conductive wire in the two soft sealing threading blocks, respectively. This avoids rainwater entering the shell through the threading hole along the wire. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the photovoltaic solar inverter power supply transformer in one embodiment.

[0020] Figure 2 It is a partial enlarged structural schematic diagram of the photovoltaic solar inverter power supply transformer in one embodiment.

[0021] Figure 3 It is a structural schematic diagram of the photovoltaic solar inverter power supply transformer in another embodiment.

[0022] Figure 4 It is a structural schematic diagram of the photovoltaic solar inverter power supply transformer in another embodiment.

[0023] Figure 5 It is a structural schematic diagram of the lightning rod in one embodiment. DETAILED DESCRIPTION

[0024] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, specific embodiments of the present application will be described below in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using these specific details in other ways. Therefore, the present application is not limited to the specific embodiments disclosed below. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely used for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0025] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or a specific number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0026] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. 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.

[0027] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0028] It is to be noted that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, when a part is referred to as being "on" or "connected to" another part, it can be directly on or connected to the other part or intervening parts can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0029] Referring to the drawings Figures 1 to 2 The present application provides a photovoltaic solar inverter power supply transformer 10, which comprises a receiving seat 100, a self-rotating heat exhaust cap 200, a shell 300, a waterproof cover 400, a magnetic core mechanism 500, a winding mechanism 600 and two waterproof threading mechanisms 700.

[0030] The self-rotating heat exhaust cap 200 is arranged on the receiving seat 100, the shell 300 is connected with the receiving seat 100, and the shell 300 is arranged in the self-rotating heat exhaust cap 200. An opening 201 is formed in the top of the self-rotating heat exhaust cap 200, the top of the shell 300 passes through the opening 201, and the waterproof cover 400 is arranged on the top of the shell 300. In this embodiment, the waterproof cover 400 is a cone structure to increase the waterproof performance of the waterproof cover 400. The winding mechanism 600 is arranged on the magnetic core mechanism 500. The magnetic core mechanism 500 and the winding mechanism 600 are both accommodated in the shell 300. The magnetic core mechanism 500 is connected with the shell 300.

[0031] Two through holes 301 are formed in the bottom of the shell 300, and each waterproof threading mechanism 700 is arranged at one through hole 301. The waterproof threading mechanism 700 comprises a soft sealing threading block 710 and two extrusion assemblies 720. The soft sealing threading block 710 is in interference fit with the through hole 301, and the soft sealing threading block 710 is inserted into the through hole 301 and connected with the shell 300. The two extrusion assemblies 720 are symmetrically arranged on the two sides of the soft sealing threading block 710. Extrusion grooves 701 are formed in the two sides of the soft sealing threading block 710. The soft sealing threading block 710 is provided with a threading hole 702, and the threading hole 702 penetrates the soft sealing threading block 710.

[0032] The extrusion assembly 720 comprises a sliding plate 721, sliding blocks 722, compression springs 723 and extrusion blocks 724. One end of the sliding plate 721 is connected with the inner wall of the through hole 301, and the width of the sliding plate 721 is the same as the width of the through hole 301. In the embodiment, the sliding plate 721 is integrally formed with the shell 300. The sliding blocks 722 are adapted to the through hole 301, and the sliding blocks 722 are inserted into the through hole 301 and are in sliding connection with the shell 300. The sliding grooves 703 are formed in the sliding blocks 722, and the sliding grooves 703 are adapted to the sliding plate 721. The sliding plate 721 is inserted into the sliding grooves 703 and is in sliding connection with the sliding blocks 722. The compression springs 723 are accommodated in the sliding grooves 703. One end of each compression spring 723 is connected with the sliding plate 721, and the other end of each compression spring 723 is connected with the bottom of the sliding groove 703. The other end of the sliding block 722 away from the sliding plate 721 is connected with the extrusion block 724. In the embodiment, the extrusion block 724 is integrally formed with the sliding block 722. The extrusion blocks 724 are adapted to the extrusion grooves 701, and each extrusion block 724 is inserted into one extrusion groove 701 and is in extrusion abutment with the soft sealing threading block 710.

[0033] In the working process of the above-mentioned transformer 10 for photovoltaic solar inverter power supply, the waterproof cover 400 and the self-rotating heat-removing hat 200 form a first waterproof layer to protect the shell 300, the magnetic core mechanism 500 and the winding mechanism 600. The shell 300 is a second waterproof layer to protect the magnetic core mechanism 500 and the winding mechanism 600. The self-rotating heat-removing hat 200 also plays a role in heat dissipation to effectively remove the heat generated in the working process of the magnetic core mechanism 500 and the winding mechanism 600. The two sliding blocks 722 in the waterproof threading mechanism 700 are pushed away from each other and the compression springs 723 are compressed to move, so as to ensure that the threading hole 702 has a larger space to accommodate the conductive wire. The input conductive wire of the above-mentioned transformer 10 for photovoltaic solar inverter power supply is inserted into the threading hole 702 formed in the soft sealing threading block 710. The output conductive wire is inserted into the threading hole 702 formed in the other soft sealing threading block 710. The sliding blocks 722 are loosened, the compression springs 723 return to the elastic deformation, the sliding blocks 722 drive the extrusion blocks 724 to be inserted into the extrusion groove 701 and in extrusion abutment with the soft sealing threading block 710, so as to fix the input conductive wire and the output conductive wire in the two soft sealing threading blocks 710 respectively. Rainwater is prevented from entering the shell 300 through the threading hole 702 along the wire.

[0034] Please refer to Figure 3In order to increase the heat dissipation performance of the housing 300, in one embodiment, the photovoltaic solar inverter transformer 10 further comprises a top heat dissipation mechanism 800, which comprises a heat dissipation ventilation pipe 810, two conductive support rods and a rain cover 830. The heat dissipation ventilation pipe 810 is arranged at the top of the housing 300, and in this embodiment, the heat dissipation ventilation pipe 810 is integrally formed with the housing 300. One end of the heat dissipation ventilation pipe 810 is in communication with the middle region of the top of the housing 300, and in another embodiment, the heat dissipation ventilation pipe 810 is integrally formed with the waterproof cover 400. The end of the heat dissipation ventilation pipe 810 that passes through the waterproof cover 400 is connected to the rain cover 830 by two conductive support rods. In this embodiment, the rain cover 830 is a hemispherical housing 300 structure to increase the rainproof performance of the rain cover 830. The two conductive support rods are symmetrically arranged on both sides of the heat dissipation ventilation pipe 810. The hot air generated during the operation of the magnetic core mechanism 500 and the winding mechanism 600 rises to the top of the housing 300 and is discharged to the outside through the heat dissipation ventilation pipe 810. In this way, the heat dissipation performance of the housing 300 is increased.

[0035] In order to further increase the heat dissipation performance of the housing 300, please refer to Figure 1 In one embodiment, a plurality of heat dissipation holes 302 are uniformly arranged on the outer side wall of the housing 300. The heat generated during the operation of the magnetic core mechanism 500 and the winding mechanism 600 can be dissipated to the outside of the housing 300 through the heat dissipation holes 302, and discharged to the outside through the self-rotating heat exhaust hat 200. In one embodiment, a water blocking inclined plate 310 is arranged at each heat dissipation hole 302 of the housing 300. The water blocking inclined plate 310 can prevent rainwater from entering the housing 300 from the heat dissipation hole 302 after entering the self-rotating heat exhaust hat 200 from the outside. On the other hand, the cool air blown into the self-rotating heat exhaust hat 200 can be precisely blown into the heat dissipation hole 302 above along the water blocking inclined plate below, thereby taking out the heat in the housing 300 and further improving the heat dissipation performance of the housing 300. In this way, the heat dissipation performance of the housing 300 is further increased.

[0036] Please refer to Figure 4 and Figure 5In order to prevent lightning from destroying the photovoltaic solar inverter transformer 10, in one embodiment, the photovoltaic solar inverter transformer 10 further comprises a lightning rod 900, which comprises a connecting seat 910, a conductive support rod 920, a connecting ring 930, a plurality of conductive rods 940, a plurality of grounding wires (not shown), a receiving ball 950, and a plurality of lightning attracting needles 960. The conductive support rod 920 is connected to the top of the rain cover 830 through the connecting seat 910, the connecting ring 930 is sleeved on the conductive support rod 920 and connected with the conductive support rod 920, and each conductive rod 940 is uniformly arranged around the connecting ring 930. Each conductive rod 940 is grounded through a grounding wire. The receiving ball 950 is arranged at one end of the conductive support rod 920 away from the receiving seat 100, and each lightning attracting needle 960 is uniformly arranged on the receiving ball 950. Each lightning attracting needle 960 uniformly arranged on the receiving ball 950 can complete the task of attracting electricity in a larger range, so as to avoid the lightning from damaging the photovoltaic solar inverter transformer 10 by lightning stroke. Each conductive rod 940 is grounded through each grounding wire. It can accelerate the conduction of lightning to ground, and also share the electric pressure of a single grounding wire. In this way, the lightning rod 900 can effectively prevent lightning from destroying the photovoltaic solar inverter transformer 10.

[0037] Please refer to Figure 4 and Figure 5 In one embodiment, in order to increase the working stability of the lightning rod 900, the lightning rod 900 further comprises a dielectric tank 970, which comprises a tank body 971, an insulating shielding shell 972, and a conductive core column 973. The conductive core column 973 is arranged on the conductive support rod 920, the conductive core column 973 is contained in the insulating shielding shell 972, the insulating shielding shell 972 is filled with a dielectric material 974, and the dielectric material 974 wraps the conductive core column 973. The insulating shielding shell 972 is contained in the tank body 971. Lightning enters the conductive core column 973 through the conductive support rod 920, and the dielectric material 974 can effectively buffer the current formed by lightning, convert a part of the electric energy into chemical energy, electric field energy, electromagnetic energy, etc., reduce the strength of the current formed by lightning, reduce the working pressure of the lightning rod 900, and reduce the harm of lightning.

[0038] To increase the working stability of the dielectric tank 970, in one embodiment, the dielectric material 974 comprises the following components in parts by mass: 2 to 5 parts of silicon dioxide, 4 to 18 parts of zinc oxide, 5 to 10 parts of aluminum trioxide, 6 to 12 parts of titanium dioxide, 20 to 30 parts of calcium oxide, 10 to 20 parts of sodium carbonate, 8 to 14 parts of magnesium oxide, 6 to 12 parts of barium carbonate, 4 to 8 parts of zirconium oxide, 8 to 12 parts of antimony trioxide, and 4 to 8 parts of bismuth trioxide. Specifically, after grinding the above components into powder, adding deionized water to stir them uniformly to form a paste, and pouring the paste into the insulating shield shell 972, the dielectric material 974 is obtained after natural solidification. In this way, the working stability of the dielectric tank 970 is increased.

[0039] The technical features of the above-described embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above-described embodiments are described, but it should be understood that any combination of the technical features is within the scope of the present disclosure as long as the combination does not result in contradictions.

[0040] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these are within the scope of protection of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A transformer for a photovoltaic solar inverter power supply, characterized in that, include: The components include a receiving base, a self-rotating hot air exhaust cap, a housing, a waterproof cover, a magnetic core mechanism, a winding mechanism, and two waterproof threading mechanisms. The self-rotating hot air exhaust cap is mounted on the receiving seat, and the housing is connected to the receiving seat and disposed inside the self-rotating hot air exhaust cap. An opening is provided at the top of the self-rotating hot air exhaust cap, through which the top of the housing passes. A waterproof cover is disposed at the top of the housing, and the winding mechanism is mounted on the magnetic core mechanism. Both the magnetic core mechanism and the winding mechanism are housed within the housing. The magnetic core mechanism is connected to the housing. Both sides of the bottom of the housing have openings, and each waterproof threading mechanism is correspondingly installed at one of the openings; the waterproof threading mechanism includes a soft sealing threading block and two extrusion components; the soft sealing threading block is interference-fitted with the opening, and is inserted into the opening and connected to the housing; the two extrusion components are symmetrically arranged on both sides of the soft sealing threading block; extrusion grooves are provided on both sides of the soft sealing threading block; the soft sealing threading block has a threading hole that passes through the soft sealing threading block; The extrusion assembly includes a sliding plate, a sliding block, several compression springs, and an extrusion block. One end of the sliding plate is connected to the inner wall of the through-hole, and the width of the sliding plate is the same as the width of the through-hole. The sliding block is adapted to the through-hole, inserted into the through-hole, and slidably connected to the housing. A sliding groove is provided on the sliding block, adapted to the sliding plate, inserted into the sliding groove, and slidably connected to the sliding block. Each compression spring is housed in the sliding groove, one end of each compression spring is connected to the sliding plate, and the end of each compression spring away from the sliding plate is connected to the bottom of the sliding groove. The end of the sliding block away from the sliding plate is connected to the extrusion block, adapted to the extrusion groove, and each extrusion block is correspondingly inserted into one of the extrusion grooves and presses against the soft sealing threading block.

2. The transformer for photovoltaic solar inverter power supply according to claim 1, characterized in that, The transformer for the photovoltaic solar inverter power supply also includes a top heat dissipation mechanism, which includes a heat dissipation ventilation pipe, two support rods, and a rain cover. The heat dissipation ventilation pipe is located on the top of the housing, with one end of the heat dissipation ventilation pipe communicating with the middle area of ​​the top of the housing. One end of the heat dissipation ventilation pipe passes through the waterproof cover and is connected to the rain cover through the two support rods. The two support rods are symmetrically arranged on both sides of the heat dissipation ventilation pipe.

3. The transformer for photovoltaic solar inverter power supply according to claim 2, characterized in that, The rain cover has a hemispherical shell structure.

4. The transformer for photovoltaic solar inverter power supply according to claim 2, characterized in that, The heat dissipation and ventilation pipe is integrally formed with the housing.

5. The transformer for photovoltaic solar inverter power supply according to claim 2, characterized in that, The heat dissipation and ventilation pipe is integrally formed with the waterproof cover.

6. The transformer for photovoltaic solar inverter power supply according to claim 1, characterized in that, The sliding plate is integrally formed with the housing.

7. The transformer for photovoltaic solar inverter power supply according to claim 1, characterized in that, The extrusion block and the sliding block are integrally formed.

8. The transformer for photovoltaic solar inverter power supply according to claim 1, characterized in that, The outer wall of the housing is provided with a number of heat dissipation holes evenly distributed.

9. The transformer for a photovoltaic solar inverter power supply according to claim 8, characterized in that, The housing is provided with a water-blocking ramp at each of the heat dissipation holes.

10. The transformer for a photovoltaic solar inverter power supply according to claim 1, characterized in that, The waterproof cover has a cone-shaped structure.

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