Concentrator for photovoltaic inverter and photovoltaic inversion device

Abstract

The utility model discloses a concentrator for a photovoltaic inverter and a photovoltaic inversion device, the concentrator comprises a line concentration shell provided with an anti-ultraviolet coating, the line concentration shell is provided with a mounting groove, and a groove opening of the mounting groove is detachably connected with a line concentration shell cover; an interface board is mounted in the mounting groove, a wiring terminal is mounted on the interface board, and an avoiding hole is formed in the position, corresponding to the wiring terminal, of the side wall of the mounting groove; when external equipment needs to be connected with the wiring terminal, the wiring terminal is positioned at the first position, so that the external equipment and the wiring terminal can be conveniently inserted; when the wiring terminal is not used or a cable needing to be used for a long time is connected, the wiring terminal can be moved to the second position, the wiring terminal is made to be completely located in the installation groove, and due to the fact that the line concentration shell is provided with the anti-ultraviolet coating, the influence of ultraviolet rays on the wiring terminal is reduced, the irradiation time of the wiring terminal in the ultraviolet rays is shortened, and the service life of the wiring terminal is prolonged. Therefore, the aging of the wiring terminals is reduced, the service life of the concentrator for the photovoltaic inverter is prolonged, and the reliability of the photovoltaic inverter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic structures, and in particular to a concentrator for a photovoltaic inverter and a photovoltaic inverter device. Background Art

[0002] Photovoltaic products are essentially devices that convert solar energy into electrical energy, using the photoelectric effect to generate direct current. However, since modern electrical equipment and power grids use alternating current, photovoltaic products are also equipped with inverters, which can convert direct current into alternating current for use. In other words, photovoltaic inverters can be regarded as the heart of photovoltaic products, playing a role in system monitoring and energy management.

[0003] In actual use, in order to facilitate data transmission, the photovoltaic inverter also reserves a communication interface for external 4G communication sticks, 5G communication sticks and other communication devices to connect; at the same time, in order to provide the scalability of the photovoltaic inverter, more communication interfaces will be added, or a hub will be installed on the original communication interface. However, considering that photovoltaic products need to be set under strong ultraviolet rays, the installed hub is prone to aging problems, especially the interface part. Once the interface part of the hub ages, the data of the photovoltaic inverter cannot be uploaded stably, resulting in reduced reliability of photovoltaic products.

[0004] A Chinese patent "A contact type anti-aging distribution cabinet" was retrieved, publication number CN207691229U, comprising a distribution box body, a hydrophobic layer fixedly connected to the top of the inner wall of the distribution box body, a heat insulation board fixedly connected to the bottom of the hydrophobic layer, a first ceramic tube fixedly connected to the left side of the inner wall of the distribution box body, the top of the first ceramic tube penetrates the back of the distribution box body and extends to the outside of the distribution box body, a second ceramic tube is fixedly connected to the left side of the inner wall of the distribution box body and located at the bottom end of the first ceramic tube, and pure copper wires are arranged inside the second ceramic tube and the first ceramic tube. The utility model relates to the technical field of distribution cabinet design. The contact type anti-aging distribution cabinet cannot be used in a hub for a photovoltaic inverter to prevent its aging.

[0005] The Chinese patent "A household photovoltaic intelligent grid-connected box" publication number CN205921255U was retrieved, which includes a grid-connected box, shock-absorbing devices are fixedly installed on the left and right sides of the bottom of the grid-connected box, a supporting base is fixedly installed on the bottom of the shock-absorbing device, a protective cover is provided at the top of the grid-connected box, columns are provided on the left and right sides of the protective cover, the columns pass through the protective cover, a fixing ring is provided on the outer wall of the column, fixing bolts are provided on the outer wall of the fixing ring, and a buffer device is provided on the top of the protective cover. The household photovoltaic intelligent grid-connected box cannot be used in a hub for a photovoltaic inverter to prevent its aging. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a hub for a photovoltaic inverter and a photovoltaic inverter device, which solve the technical problem that the hub in the prior art is prone to aging in a strong ultraviolet environment.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] A photovoltaic inverter hub comprises a hub housing provided with an anti-ultraviolet coating, the hub housing being provided with a mounting groove, the notch of the mounting groove being detachably connected with a hub housing cover;

[0009] An interface board is installed in the installation slot, a wiring terminal is installed on the interface board, and a avoidance hole is opened on the side wall of the installation slot corresponding to the position of the wiring terminal; the wiring terminal can move between a first position and a second position;

[0010] Wherein, when the wiring terminal is located at the first position, the wiring terminal passes through the avoidance hole and is at least partially located outside the line collection housing; when the wiring terminal is located at the second position, the wiring terminal is completely located in the installation groove.

[0011] Optionally, a support plate is installed in the installation slot, and a connecting plate is fixedly connected to a side of the interface plate facing the support plate;

[0012] A plurality of spring units are installed on the support plate, one end of the spring unit abuts against the support plate, and the other end of the spring unit abuts against the connecting plate, for pushing the connecting terminal to the first position;

[0013] A buckle assembly is also installed in the installation groove, and the buckle assembly is used to lock the connecting plate in the second position.

[0014] Optionally, two guide members arranged opposite to each other are further provided in the installation groove, and guide grooves are provided on the sides opposite to each other of the two guide members; one end of the connecting plate is slidably connected to one of the guide grooves, and the other end of the connecting plate is slidably connected to the other guide groove.

[0015] Optionally, the buckle assembly includes a buckle portion installed on the connecting plate and a buckle portion installed on the guide member;

[0016] When the connection terminal is located at the second position, the slot portion is engaged and connected with the buckle portion.

[0017] Optionally, two roller parts are installed in the installation groove, and elastic roll films are wound on the roller parts. The free ends of the elastic roll films extend out of the wire collection housing, and magnetic buckles are installed on the free ends of the elastic roll films.

[0018] Optionally, the elastic roll film is coated with an anti-ultraviolet coating or a reflective layer.

[0019] Optionally, the roller portion and the guide member are arranged in one-to-one correspondence;

[0020] Optionally, a guide gap is left between the guide member and the groove wall of the installation groove, the roller portion is located on a side of the guide member away from the connecting plate, and the elastic roll film extends through the guide gap to the outside of the line collection housing.

[0021] Optionally, the elastic film of the roller part is a coil spring, the groove side wall of the mounting groove is correspondingly provided with a gap for allowing the elastic film to pass through, and the magnetic buckle is a long strip magnet block, and the magnetic buckle cannot pass through the gap.

[0022] Optionally, the two magnetic buckles have opposite polarities. When the terminal moves to the second position, the two magnetic buckles move to the center position of the wire collection shell, so that the two magnetic buckles are magnetically connected to each other. At this time, an elastic roll film is stretched from the left side to the center position of the wire collection shell, and the other elastic roll film is stretched from the right side to the center position of the wire collection shell, so that the avoidance hole is completely covered by the elastic roll film.

[0023] A photovoltaic inverter device includes the photovoltaic inverter hub as described above.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] The photovoltaic inverter hub and photovoltaic inverter device provided by the utility model allow the wiring terminals to be located at the first position when an external device needs to be connected to the wiring terminals, so as to facilitate the plugging of the two; when the wiring terminals are not in use, or after connecting cables that need to be used for a long time, the wiring terminals can be moved to the second position so that the wiring terminals are completely located in the installation grooves. Since the hub housing is provided with an anti-ultraviolet coating, the influence of ultraviolet rays on the wiring terminals is reduced, and the exposure time thereof to ultraviolet rays is reduced, thereby reducing the aging of the wiring terminals, thereby increasing the service life of the photovoltaic inverter hub and improving the reliability of the photovoltaic inverter device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0028] Figure 1 A schematic diagram of the overall structure of a photovoltaic inverter hub provided by an embodiment of the utility model;

[0029] Figure 2 A schematic diagram of the partial structure of a hub for a photovoltaic inverter provided in an embodiment of the utility model;

[0030] Figure 3 A schematic diagram of the top view of the structure of a photovoltaic inverter hub provided by an embodiment of the utility model;

[0031] Illustrations: 10, wire collection housing; 101, mounting slot; 102, guide gap; 20, wire collection housing cover; 30, interface board; 40, wiring terminal; 50, support plate; 60, connecting plate; 70, spring unit; 80, snap assembly; 801, slot portion; 802, snap portion; 90, guide piece; 901, guide slot; 100, roller portion; 110, elastic roll film; 120, magnetic buckle. DETAILED DESCRIPTION

[0032] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0034] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0035] like Figures 1 to 3 As shown, Figure 1 The overall structural diagram of the photovoltaic inverter hub provided by the embodiment of the utility model is as follows: Figure 2 A schematic diagram of a partial structure of a photovoltaic inverter hub provided by an embodiment of the utility model. Figure 3 A schematic diagram of the top structure of a hub for a photovoltaic inverter provided in an embodiment of the utility model.

[0036] Embodiment 1:

[0037] The present embodiment provides a hub for a photovoltaic inverter, which is applied to a photovoltaic inverter device and is mainly used for an expansion interface of the photovoltaic inverter device, aiming to provide more communication interfaces for the photovoltaic inverter device. In the present embodiment, the structure of the hub for the photovoltaic inverter is improved to make it more suitable for outdoor scenes with strong ultraviolet rays, thereby improving its lifespan and stability.

[0038] like Figure 1 and Figure 2 As shown, the photovoltaic inverter hub in this embodiment includes a hub shell 10 provided with an anti-ultraviolet coating, the hub shell 10 is provided with an installation groove 101, and the notch of the installation groove 101 is detachably connected to a hub shell cover 20 (the hub shell cover 20 is also coated with an anti-ultraviolet coating, and the anti-ultraviolet coating can be the TY4-4B anti-ultraviolet agent produced by Dongguan Taiyang New Materials Technology Co., Ltd.); the hub shell 10 is also equipped with a connection terminal (not shown) for connecting to the interface of the photovoltaic inverter device, and the connection terminal includes but is not limited to an RJ45 plug, a USB plug, etc., which is adaptively selected according to the photovoltaic inverter device, and is not specifically limited in this embodiment.

[0039] An interface board 30 is installed in the installation slot 101, and a wiring terminal 40 is installed on the interface board 30. The wiring terminal 40 can be transferred to the connection terminal through the interface board 30 to play a role in data transmission. The side wall of the installation slot 101 is provided with an avoidance hole corresponding to the position of the wiring terminal 40; the wiring terminal 40 can move (slide or move) between a first position and a second position; wherein, when the wiring terminal 40 is located at the first position, the wiring terminal 40 passes through the avoidance hole and is at least partially located outside the wiring hub housing 10; when the wiring terminal 40 is located at the second position, the wiring terminal 40 is completely located in the installation slot 101.

[0040] Specifically, when the photovoltaic inverter hub in this embodiment needs to connect an external device to the terminal block 40, the terminal block 40 is located in the first position (or the first station) to facilitate the plugging of the two; when the terminal block 40 is not in use, or after connecting a cable that needs to be used for a long time, the terminal block 40 can be moved to the second position (or the second station) so that the terminal block 40 is completely located in the installation groove 101. Since the hub housing 10 is provided with an anti-ultraviolet coating, the impact of ultraviolet rays on the terminal block 40 is reduced, and its exposure time to ultraviolet rays is reduced, thereby reducing the aging of the terminal block 40, thereby increasing the service life of the photovoltaic inverter hub to improve the reliability of the photovoltaic inverter device.

[0041] Furthermore, if Figure 2 and Figure 3 As shown, a support plate 50 is installed at the center of the installation groove 101, and a connecting plate 60 is fixedly connected to the side of the interface plate 30 facing the support plate 50, that is, the connecting plate 60 and the interface plate 30 are fixed as a whole and can move synchronously; a plurality of spring units 70 (the spring unit 70 can be a spring) are installed on the support plate 50, one end of the spring unit 70 abuts against the support plate 50, and the other end of the spring unit 70 abuts against the connecting plate 60, which is used to push the terminal 40 to the first position; a snap assembly 80 is also installed in the installation groove 101, and the snap assembly 80 is used to lock the connecting plate 60 in the second position. It is understandable that before the connection terminal 40 is completely moved to the second position, after the external force is removed, it can return to the first position under the action of the spring unit 70. Therefore, when the connection terminal 40 is connected to an external device, the spring unit 70 can be used as a support to facilitate the staff to plug the cable terminal of the external device into the connection terminal 40; after the connection terminal 40 is connected, the connection terminal 40, the interface board 30 and the connection board 60 can be completely pushed to the second position under the action of external force, and the buckle assembly 80 is used to complete the limit locking of the connection terminal 40. When the connection terminal 40 needs to be taken out, the hub cover 20 is opened to release the limit of the buckle assembly 80 from the inside.

[0042] Furthermore, if Figure 2 and Figure 3 As shown, two guide members 90 are arranged opposite to each other in the installation groove 101, and guide grooves 901 are opened on the opposite sides of the two guide members 90; one end of the connecting plate 60 is slidably connected to one of the guide grooves 901, and the other end of the connecting plate 60 is slidably connected to the other guide groove 901.

[0043] In this embodiment, the snap assembly 80 includes a slot portion 801 installed on the connecting plate 60 and a snap portion 802 installed on the guide member 90; when the connecting terminal 40 is in the second position, the slot portion 801 and the snap portion 802 are engaged and limited, so that the connecting plate 60, the interface plate 30 and the connecting terminal 40 cannot leave the second position.

[0044] On the basis of the above embodiment, two roller parts 100 are further installed in the installation groove 101, and an elastic roll film 110 is wound on the roller part 100, and the end part (free end part) of the elastic roll film 110 passes through the outside of the line collection shell 10, and a magnetic buckle 120 is installed, wherein the elastic roll film of the roller part is a coil spring, and the groove side wall of the installation groove is correspondingly provided with a gap for allowing the elastic roll film to pass through, and the magnetic buckle is a long strip magnet block, and the magnetic buckle cannot pass through the gap. In the absence of external force, the elastic roll film (coil spring) is rolled up on the roller part 100, so that the magnetic buckle is attached to the outer wall surface of the line collection shell 10.

[0045] Among them, the elastic roll film 110 is coated with an anti-ultraviolet coating or a reflective layer. It should be supplemented that the polarities of the two magnetic buckles 120 are opposite, so that they can be magnetically connected to each other; illustratively, when the terminal 40 is not used for a long time, the terminal 40 can be moved to the second position and locked. At this time, the two magnetic buckles 120 are pulled out from both sides respectively, and the two magnetic buckles 120 are moved to the central position of the wire collection shell 10, so that the two magnetic buckles 120 are magnetically connected to each other. At this time, one elastic roll film 110 is stretched from the left side to the central position of the wire collection shell 10, and the other elastic roll film 110 is stretched from the right side to the central position of the wire collection shell 10, so that the avoidance hole is completely covered, further improving the protection of the terminal 40.

[0046] Furthermore, the roller portion 100 is arranged in a one-to-one correspondence with the guide member 90; a guide gap 102 is left between the guide member 90 and the groove wall of the mounting groove 101, and the roller portion 100 is located on the side of the guide member 90 away from the connecting plate 60, and the elastic roll film 110 extends through the guide gap 102 to the outside of the wiring hub shell 10. Through this arrangement, the internal space in the mounting groove 101 is fully utilized, making the overall structure of the hub for the photovoltaic inverter more compact.

[0047] To summarize, the photovoltaic inverter hub and photovoltaic inverter device provided by the utility model, when it is necessary to connect an external device to the wiring terminal, the wiring terminal is located in the first position to facilitate the plugging of the two; when the wiring terminal is not in use, or after connecting a cable that needs to be used for a long time, the wiring terminal can be moved to the second position so that the wiring terminal is completely located in the installation groove. Since the hub shell is provided with an anti-ultraviolet coating, the impact of ultraviolet rays on the wiring terminals is reduced, and the exposure time to ultraviolet rays is reduced, thereby reducing the aging of the wiring terminals, thereby increasing the service life of the photovoltaic inverter hub, thereby improving the reliability of the photovoltaic inverter device.

[0048] Embodiment 2:

[0049] The photovoltaic inverter device provided in this embodiment includes a photovoltaic inverter hub in Embodiment 1. Embodiment 1 describes the specific structure and technical effects of the photovoltaic inverter hub. The photovoltaic inverter device in this embodiment refers to the photovoltaic inverter hub and also has its technical effects.

[0050] In summary, the photovoltaic inverter device provided in this embodiment has the advantages of strong anti-aging ability, high stability, long life, and compact structure.

[0051] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A hub for a photovoltaic inverter, characterized in that: It comprises a line collection housing (10) provided with an anti-ultraviolet coating, the line collection housing (10) being provided with a mounting groove (101), the notch of the mounting groove (101) being detachably connected to a line collection housing cover (20); An interface board (30) is installed in the installation groove (101), a connection terminal (40) is installed on the interface board (30), and a clearance hole is provided on the groove side wall of the installation groove (101) at a position corresponding to the connection terminal (40); the connection terminal (40) can move between a first position and a second position; Wherein, when the connection terminal (40) is located at a first position, the connection terminal (40) passes through the avoidance hole and is at least partially located outside the line collection housing (10); when the connection terminal (40) is located at a second position, the connection terminal (40) is completely located in the installation groove (101).

2. A photovoltaic inverter hub according to claim 1, characterized in that: A support plate (50) is installed in the installation groove (101), and a connecting plate (60) is fixedly connected to a side of the interface plate (30) facing the support plate (50); A plurality of spring units (70) are mounted on the support plate (50), one end of the spring unit (70) abuts against the support plate (50), and the other end of the spring unit (70) abuts against the connection plate (60), for pushing the connection terminal (40) to the first position; A buckle assembly (80) is also installed in the installation groove (101), and the buckle assembly (80) is used to lock the connecting plate (60) in the second position.

3. A photovoltaic inverter hub according to claim 2, characterized in that: Two guide members (90) are arranged opposite to each other in the installation groove (101), and guide grooves (901) are provided on the mutually opposite sides of the two guide members (90); one end of the connecting plate (60) is slidably connected to one of the guide grooves (901), and the other end of the connecting plate (60) is slidably connected to the other guide groove (901).

4. A photovoltaic inverter hub according to claim 3, characterized in that: The buckle assembly (80) comprises a buckle slot portion (801) mounted on the connecting plate (60) and a buckle portion (802) mounted on the guide member (90); When the connection terminal (40) is located at the second position, the slot portion (801) is engaged and connected with the buckle portion (802).

5. A photovoltaic inverter hub according to claim 3, characterized in that: Two roller parts (100) are also installed in the installation groove (101), and an elastic roll film (110) is wound on the roller part (100), and the free end of the elastic roll film (110) extends out of the line collection housing (10), and the free end of the elastic roll film (110) is installed with a magnetic buckle (120).

6. A photovoltaic inverter hub according to claim 5, characterized in that: The elastic roll film (110) is coated with an anti-ultraviolet coating or a reflective layer.

7. A photovoltaic inverter hub according to claim 5, characterized in that: The roller portion (100) and the guide member (90) are arranged in a one-to-one correspondence; A guide gap (102) is left between the guide member (90) and the groove wall of the installation groove (101); the roller portion (100) is located on a side of the guide member (90) away from the connecting plate (60); and the elastic roll film (110) passes through the guide gap (102) and extends to the outside of the line collection housing (10).

8. A photovoltaic inverter hub according to claim 5 or 7, characterized in that: The elastic roll film (110) of the roller portion (100) is a coil spring, and a slot side wall of the mounting slot (101) is provided with a corresponding gap for allowing the elastic roll film (110) to pass through, and the magnetic buckle (120) is a long strip magnet block, and the magnetic buckle (120) cannot pass through the gap.

9. A photovoltaic inverter hub according to claim 8, characterized in that: The two magnetic buckles (120) have opposite polarities. When the connecting terminal (40) moves to the second position, the two magnetic buckles (120) move to the central position of the wire collection housing (10), thereby achieving mutual magnetic connection between the two magnetic buckles (120). At this time, an elastic roll film (110) is stretched from the left side to the central position of the wire collection housing (10), and the other elastic roll film (110) is stretched from the right side to the central position of the wire collection housing (10), thereby achieving complete coverage of the avoidance hole by the elastic roll film.

10. A photovoltaic inverter device, characterized in that: It comprises a hub for a photovoltaic inverter as claimed in any one of claims 1 to 9.

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