Protective device of photovoltaic inverter

Abstract

The utility model relates to a protection device of a photovoltaic inverter. The photovoltaic inverter protection method is suitable for the technical field of photovoltaic inverter protection. The technical problem to be solved by the application is to provide a protection device of a photovoltaic inverter. According to the technical scheme, the protection device of the photovoltaic inverter is characterized by comprising a protection box which is internally provided with a cavity for placing the photovoltaic inverter; the first fixing assembly comprises a first fixing piece and a second fixing piece, the first fixing piece is arranged in the protection box, the second fixing piece is arranged on the outer wall of the protection box, the first fixing piece and the second fixing piece can be matched with each other, and the photovoltaic inverter is installed and fixed in the cavity of the protection box; and the second fixing assembly is arranged in the cavity, the position of the second fixing assembly corresponds to the wiring end of the photovoltaic inverter, and the second fixing assembly is used for fixing a cable connected with the wiring end.

Description

Technical Field

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

[0002] Photovoltaic inverters are inverters that can convert the variable DC voltage generated by photovoltaic (PV) solar panels into AC power at the mains frequency, which can be fed back to the commercial power transmission system or used for off-grid power grids. Photovoltaic inverters are one of the important system balances (BOS) in photovoltaic array systems and can be used with general AC-powered equipment. Solar inverters have special functions for photovoltaic arrays, such as maximum power point tracking and islanding protection.

[0003] Traditional photovoltaic inverter devices have the following problems when in use:

[0004] 1. Due to the lack of protective devices, it is often affected by the external environment during use, thus reducing its service life;

[0005] 2. Since the photovoltaic inverter is connected to multiple cables and its own volume and mass are too small, the cables are easily detached from the photovoltaic inverter, resulting in poor contact, etc. Utility Model Content

[0006] The technical problem to be solved by the utility model is: to provide a protection device for a photovoltaic inverter in view of the above-mentioned existing problems.

[0007] The technical solution adopted by the utility model is: a protective device for a photovoltaic inverter, characterized in that it includes:

[0008] A protective box having a chamber inside for placing a photovoltaic inverter;

[0009] A first fixing assembly includes a first fixing member and a second fixing member, wherein the first fixing member is disposed in the protective box, and the second fixing member is disposed on an outer wall of the protective box, and the first fixing member and the second fixing member can cooperate with each other to realize the installation and fixing of the photovoltaic inverter in the chamber of the protective box;

[0010] The second fixing component is arranged in the chamber. The position of the second fixing component corresponds to the connection terminal of the photovoltaic inverter. The second fixing component is used to fix the cable connected to the connection terminal.

[0011] Through the above-mentioned technical means, the photovoltaic inverter is fixedly installed in the protective box by utilizing the mutual cooperation of the first fixing member and the second fixing member. The protective box can protect the photovoltaic inverter. The protective box can minimize the impact of the external environment on the photovoltaic inverter, thereby increasing the service life of the photovoltaic inverter. The second fixing component is used to fix the cable at the terminal of the photovoltaic inverter to ensure the stability of the connection between the cable and the photovoltaic inverter.

[0012] In some embodiments, the first fixing member includes a mounting plate, the second fixing member includes a latch, an upper plate and a lower plate, the mounting plate is arranged on the outer wall of the photovoltaic inverter, and a plurality of mounting holes slidably matched with the latch are arranged at intervals on the mounting plate, a plurality of the latches are installed on the inner bottom of the protective box via the lower plate connected at the bottom, and the tops of the plurality of the latches pass through the corresponding mounting holes and are connected to the lower plate.

[0013] In some embodiments, the latch is provided with a first spring and a first washer between the lower plate and the mounting plate, and the latch is provided with a second spring and a second washer between the upper plate and the mounting plate.

[0014] In some embodiments, the second fixing assembly includes a base, a first rubber pad, a second rubber pad, a reinforcement plate and a bolt. The base is arranged on the inner bottom of the protective box. The base, the first rubber pad, the second rubber pad and both ends of the reinforcement plate are provided with threaded holes, and the threaded holes are threadedly matched with the bolts. The facing sides of the first rubber pad and the second rubber pad are provided with grooves for placing the cables. The side wall of the protective box is provided with a cable port corresponding to the groove. The bolt passes through the threaded holes of the reinforcement plate, the second rubber pad, the first rubber pad and the base in sequence, so that the cable is fixed in the groove.

[0015] In some embodiments, the groove is arranged in a semi-arc shape, and the inner wall of the groove is in a rough strip shape.

[0016] The beneficial effects of the utility model are:

[0017] 1. The photovoltaic inverter is fixedly installed in the protective box by the cooperation of the first fixing member and the second fixing member. The protective box is used to provide protection for the photovoltaic inverter, which can minimize the impact of the photovoltaic inverter on the external environment. In particular, the protective box can effectively block sunlight, reducing the risk of accelerated equipment aging due to direct sunlight, thereby effectively improving the service life of the photovoltaic inverter.

[0018] 2. The cable at the terminal of the photovoltaic inverter is fixed by the second fixing component, so as to reduce the relative displacement between the cable and the terminal of the photovoltaic inverter, improve the stability of the connection between the cable and the photovoltaic inverter, and reduce the risk of loose connection between the cable and the terminal of the photovoltaic inverter due to repeated movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the protection box in this application.

[0020] Figure 2 It is a schematic diagram of the assembly structure of the photovoltaic inverter and the protection box in this application.

[0021] Figure 3 It is a structural schematic diagram of the first fixing component in this application.

[0022] Figure 4 It is a structural schematic diagram of the second fixing component in this application.

[0023] Description of reference numerals:

[0024] 1. Protective box; 2. Photovoltaic inverter; 3. Mounting plate; 4. Latch; 5. Lower plate; 6. First spring; 7. First washer; 8. Second washer; 9. Second spring; 10. Upper plate; 11. Base; 12. First rubber pad; 13. Second rubber pad; 14. Reinforcement plate; 15. Bolt; 101. Cable port; 201. Wiring terminal; 301. Mounting hole; 1201. Groove.

[0025] This specification includes references to "one embodiment" or "an embodiment." The appearance of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. The particular features, structures or characteristics may be combined in any suitable manner consistent with the present disclosure.

[0026] The term "comprising" is open ended. As used in the appended claims, the term does not exclude additional structures or steps.

[0027] "First," "second," etc. As used herein, these terms act as labels for the nouns that precede them and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.). DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model is further described below in conjunction with specific embodiments.

[0029] Combination Figures 1 to 4As shown, this embodiment is a protective device for a photovoltaic inverter, including a protective box 1, a first fixing component and a second fixing component, the first fixing component includes a first fixing member and a second fixing member, a chamber for placing a photovoltaic inverter 2 is provided inside the protective box 1, the first fixing member is provided in the chamber, and the second fixing member is provided on the outer wall of the protective box 1, and the first fixing member and the second fixing member can cooperate with each other so that the photovoltaic inverter 2 is installed and fixed in the chamber of the protective box 1. A second fixing component is also installed in the chamber, and the position of the second fixing component corresponds to the wiring terminal 201 of the photovoltaic inverter 2. The wiring terminal 201 of the photovoltaic inverter 2 is used to electrically connect with an external cable to achieve the transformation of the current property, so that the cable connected to the wiring terminal 201 of the photovoltaic inverter 2 can be fixed by using the second fixing component.

[0030] In some embodiments, such as Figure 3 As shown, the first fixing member includes a mounting plate 3, and the second fixing member includes a latch 4, an upper plate 10 and a lower plate 5. The mounting plate 3 is connected to the outer walls on both sides of the photovoltaic inverter 2. A plurality of mounting holes 301 are provided on the mounting plate 3 at intervals along the axial direction, and the mounting holes 301 are slidably matched with the latch 4. The bottoms of the plurality of latches 4 are all connected to the lower plate 5, and the latch 4 is installed on the inner bottom of the protective box 1 through the lower plate 5. The positions of the latch 4 correspond to the positions of the mounting holes 301 one by one, and the top of the latch 4 passes through the corresponding mounting holes 301 and is connected to the upper plate 10.

[0031] Furthermore, the latch 4 is provided with a first spring 6 between the lower plate 5 and the mounting plate 3, a first washer 7 is provided between the first spring 6 and the mounting plate 3, the latch 4 is provided with a second spring 9 between the upper plate 10 and the mounting plate 3, a second washer 8 is provided between the second spring 9 and the mounting plate 3.

[0032] By cooperating with the first fixing member and the second fixing member, the photovoltaic inverter 2 is installed inside the protective box 1, which can prevent the photovoltaic inverter 2 from being exposed to sunlight for a long time, causing accelerated aging of the equipment. The first spring 6 and the second spring 9 located on both sides of the mounting hole 301 of the plug 4 can reduce the impact of the photovoltaic inverter 2 on the outside to a certain extent, and reduce the risk of looseness between the photovoltaic inverter 2 terminal 201 and the cable through shock absorption, which can play a role in protecting the cable. The upper plate 10 and the lower plate 5 both play the role of limiting the position and fixing the compression spring.

[0033] In some embodiments, such as Figure 4As shown, the second fixing component includes a base 11, a first rubber pad 12, a second rubber pad 13, a reinforcement plate 14 and a bolt 15. The base 11 is installed on the inner bottom of the protective box 1. Threaded holes are provided at both ends of the base 11, the first rubber pad 12, the second rubber pad 13 and the reinforcement plate 14. The threaded holes are threadedly matched with the bolts 15. The facing sides of the first rubber pad 12 and the second rubber pad 13 are provided with grooves 1201 for placing cables. The groove 1201 and the terminal 201 of the photovoltaic inverter 2 are at the same horizontal height. The bolts 15 are passed through the threaded holes at both ends of the reinforcement plate 14, the second rubber pad 13, the first rubber pad 12 and the base 11 in sequence, so that the cable connected to the terminal 201 of the photovoltaic inverter 2 can be fixed in the groove 1201. A cable opening 101 corresponding to the groove 1201 is opened on the side wall of the protective box 1.

[0034] Furthermore, the groove 1201 is arranged in a semi-arc shape, and the inner wall of the groove 1201 is rough and strip-shaped. This structure can increase the friction on the cable, making it difficult for the cable to change its state of motion, thereby preventing the cable from loosening, and the base 11 and the reinforcement plate 14 are used to apply pressure on the outer walls of the first rubber pad 12 and the second rubber pad 13 for reinforcement.

[0035] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A protective device for a photovoltaic inverter, characterized in that: include: A protective box (1) having a chamber inside for accommodating a photovoltaic inverter (2); A first fixing assembly, comprising a first fixing member and a second fixing member, wherein the first fixing member is arranged in the protection box (1), and the second fixing member is arranged on the outer wall of the protection box (1), and the first fixing member and the second fixing member can cooperate with each other to realize the installation and fixing of the photovoltaic inverter (2) in the chamber of the protection box (1); A second fixing component is arranged in the chamber, the position of the second fixing component corresponds to the connection terminal (201) of the photovoltaic inverter (2), and the second fixing component is used to fix the cable connected to the connection terminal (201).

2. The protective device for a photovoltaic inverter according to claim 1, characterized in that: The first fixing member comprises a mounting plate (3), and the second fixing member comprises a latch (4), an upper plate (10) and a lower plate (5); the mounting plate (3) is arranged on the outer wall of the photovoltaic inverter (2); a plurality of mounting holes (301) which are slidably matched with the latch (4) are arranged on the mounting plate (3) at intervals; the plurality of latches (4) are mounted on the inner bottom of the protective box (1) via the lower plate (5) connected at the bottom; the tops of the plurality of latches (4) pass through the corresponding mounting holes (301) and are connected to the lower plate (5).

3. The protective device for a photovoltaic inverter according to claim 2, characterized in that: The latch (4) is sleeved with a first spring (6) and a first washer (7) between the lower plate (5) and the mounting plate (3), and the latch (4) is sleeved with a second spring (9) and a second washer (8) between the upper plate (10) and the mounting plate (3).

4. The protective device for a photovoltaic inverter according to claim 1, characterized in that: The second fixing assembly includes a base (11), a first rubber pad (12), a second rubber pad (13), a reinforcing plate (14) and a bolt (15). The base (11) is arranged at the inner bottom of the protective box (1). Both ends of the base (11), the first rubber pad (12), the second rubber pad (13) and the reinforcing plate (14) are provided with threaded holes, and the threaded holes are threadedly matched with the bolt (15). The first rubber pad (12) and the second rubber pad (13) are provided with grooves (1201) for placing the cables on the opposite sides. The side wall of the protective box (1) is provided with a cable port (101) corresponding to the groove (1201). The bolt (15) passes through the threaded holes of the reinforcing plate (14), the second rubber pad (13), the first rubber pad (12) and the base (11) in sequence, so that the cable is fixed in the groove (1201).

5. The protection device for a photovoltaic inverter according to claim 4, characterized in that: The groove (1201) is arranged in a semi-arc shape, and the inner wall of the groove (1201) is in a rough strip shape.

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