Protection device of photovoltaic inverter and photovoltaic inverter

Abstract

The utility model relates to the field of photovoltaic inverters, and discloses a photovoltaic inverter protection device and a photovoltaic inverter.The photovoltaic inverter protection device comprises a thermal protection box, a plurality of installation arms oppositely installed on the thermal protection box and a driving structure in transmission connection with the installation arms, and the installation arms comprise limiting parts with opposite openings; the limiting part is matched with the photovoltaic inverter in size, and the driving structure is arranged to be capable of driving the mounting arm to move, so that the limiting part is attached to the photovoltaic inverter, and the photovoltaic inverter is connected with the thermal protection box. When the thermal protection box needs to be connected with the photovoltaic inverter, the mounting arms can be driven by the driving structure to move, so that the limiting parts synchronously move towards the photovoltaic inverter, the limiting parts are attached to the photovoltaic inverter, the photovoltaic inverter is fixed, and assembly is completed; when the photovoltaic inverter and the limiting part need to be disassembled, the driving structure is used for controlling the mounting arm to move reversely, so that the limiting part is separated from the photovoltaic inverter, no extra special tool is needed for mounting or disassembling, the operation is simple, and the working efficiency is high.

Description

Technical Field

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

[0002] Photovoltaic inverters are inverters that can convert the variable DC voltage generated by photovoltaic solar panels into AC power at the mains frequency. They are usually installed on solar panel brackets and are one of the important system balances in photovoltaic array systems. Photovoltaic inverters generate a lot of heat when working, so they need to be protected from heat dissipation.

[0003] At present, most common heat sinks connect the inverter to the heat sink through bolts, nuts and other connecting components. Among them, the utility model patent CN217936223U discloses a photovoltaic inverter protection device, which connects the inverter body to the bellows by setting a first connecting seat and a first connecting rod, and matching the first bolt, connecting the first connecting rod to the mounting block through the first bolt, and then inserting the first connecting rod into the first connecting seat. However, the use of bolts, screws and other components to connect the heat sink to the inverter requires not only the insertion of the connecting rod, but also the tightening of the bolts. The entire connection process is complicated and the installation efficiency is low.

[0004] Therefore, it is urgent to propose a corresponding solution to the problem that the heat sink is connected to the inverter using components such as bolts and screws, and the entire connection process is complicated and the installation efficiency is low. Utility Model Content

[0005] The utility model aims to overcome the problems in the prior art of using components such as bolts and screws to connect the heat sink to the inverter, which results in a complex connection process and low installation efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a protection device for a photovoltaic inverter on the one hand, including a thermal protection box, a plurality of mounting arms installed on the thermal protection box opposite to each other, and a driving structure transmission-connected to the mounting arms, the mounting arms including limit portions with openings opposite to each other, the limit portions matching the size of the photovoltaic inverter, and the driving structure being configured to drive the mounting arms to move so that the limit portions are attached to the photovoltaic inverter and connect the photovoltaic inverter to the thermal protection box.

[0007] In some embodiments, the limiting portion is connected to the driving structure via a connecting plate, and the connecting plate is configured to leave a gap between the limiting portion and the front side of the thermal protection box.

[0008] In some embodiments, the limiting portion is a "U"-shaped frame connected to the connecting plate.

[0009] In some embodiments, a mounting groove for accommodating the driving structure is formed in the thermal protection box, the driving structure includes a guide portion for guiding the movement of the mounting arm and a transmission portion transmission-connected to the guide portion, the guide portion includes a bidirectional screw extending along an extension direction of the mounting groove and a connecting block threadedly connected to the bidirectional screw, and an end of the connecting block away from the transmission portion is connected to the mounting arm.

[0010] In some embodiments, a guide groove is provided on the front side of the thermal protection box, and a guide block penetrating the guide groove is connected to one side of the connection block, and the guide block and the guide groove cooperate to limit the movement of the connection block.

[0011] In some embodiments, the transmission part includes a worm rotatably mounted on the back side of the thermal protection box and extending into the interior of the thermal protection box, and a worm wheel coaxially connected to the middle portion of the bidirectional screw. The worm is meshed with the worm wheel to drive the worm wheel to rotate when the worm rotates, thereby driving the bidirectional screw to rotate.

[0012] In some embodiments, at least two groups of through holes evenly arranged in the vertical direction are provided in the thermal protection box, a cooling fan for dissipating heat from the photovoltaic inverter is installed in the through holes, and filters are installed at both ends of the through holes.

[0013] In some embodiments, two partition frames are further included and arranged crosswise with each other on the back side of the thermal protection box, and a gap is left between the connecting ends of the partition frames and the thermal protection box.

[0014] In some embodiments, the partition frame includes a bonding plate bonded to the back of the thermal protection box and a vertical plate connected to both ends of the bonding plate and extending in a direction perpendicular to the bonding plate, and the ends of the vertical plate are connected to the connecting end.

[0015] A second aspect of the utility model provides a photovoltaic inverter, wherein the photovoltaic inverter comprises the above-mentioned photovoltaic inverter protection device.

[0016] In the above technical solution, by arranging a mounting arm with a limiting portion on the thermal protection box, when the thermal protection box needs to be connected to the photovoltaic inverter, the driving structure can drive the mounting arm to move, so that the limiting portion moves toward the photovoltaic inverter synchronously, thereby fitting therewith, limiting and fixing the photovoltaic inverter, and completing the assembly; when the two need to be disassembled, it is only necessary to use the driving structure to control the reverse movement of the mounting arm to separate the limiting portion from the photovoltaic inverter and complete the dismantling. There is no need to use additional professional tools for installation or dismantling, and the operation is simple and the work efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a protection device for a photovoltaic inverter disclosed in the utility model;

[0018] Figure 2 yes Figure 1 A split diagram of the protection device of the photovoltaic inverter disclosed in;

[0019] Figure 3 Observed from above Figure 1 A cross-sectional view of a protection device for a photovoltaic inverter disclosed in FIG.

[0020] Description of Reference Numerals

[0021] 1 Thermal protection box 2 Mounting arm

[0022] 21 Limiting part 22 Connecting plate

[0023] 3 Guide part 31 Bidirectional screw

[0024] 32 Connecting block 33 Guide block

[0025] 34 Mounting block 4 Transmission part

[0026] 41 Worm 42 Worm wheel

[0027] 43 Handle 5 Guide groove

[0028] 6 Through hole 61 Cooling fan

[0029] 62 Filter 7 Divider

[0030] 71 Lamination board 72 Vertical board

[0031] 73 Connection terminal 8 Photovoltaic inverter DETAILED DESCRIPTION

[0032] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0033] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0034] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply 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 of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0035] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0036] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0037] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0038] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0039] In order to overcome the problem that the existing technology uses bolts, screws and other components to connect the heat sink to the inverter, the entire connection process is complicated and the installation efficiency is low, Figures 1 to 3As shown, on the one hand, the utility model provides a protection device for a photovoltaic inverter, including a thermal protection box 1, a plurality of mounting arms 2 mounted on the thermal protection box 1 opposite to each other, and a driving structure transmission-connected to the mounting arms 2, the mounting arms 2 including limit portions 21 with openings opposite to each other, the limit portions 21 matching the size of the photovoltaic inverter 8, and the driving structure being configured to drive the mounting arms 2 to move so that the limit portions 21 are in contact with the photovoltaic inverter 8 and connect the photovoltaic inverter 8 to the thermal protection box 1.

[0040] Specifically, by arranging a mounting arm 2 with a limit portion 21 on the thermal protection box 1, when the thermal protection box 1 needs to be connected to the photovoltaic inverter 8, the driving structure can drive the mounting arm 2 to move, so that the limit portion 21 moves synchronously toward the photovoltaic inverter 8, thereby fitting therewith and fixing the photovoltaic inverter 8 to complete the assembly; when the two need to be disassembled, it is only necessary to use the driving structure to control the reverse movement of the mounting arm 2 to separate the limit portion 21 from the photovoltaic inverter 8 and complete the disassembly. There is no need to use additional professional tools for installation or disassembly, and the operation is simple and the work efficiency is high.

[0041] Wherein, in some embodiments, reference Figures 1 to 3 As shown, the limiting portion 21 is connected to the driving structure via a connecting plate 22, and the connecting plate 22 is arranged so that a gap is left between the limiting portion 21 and the front face of the thermal protection box 1, so that the limiting portion 21 moves toward the photovoltaic inverter 8 and clamps the photovoltaic inverter 8 to connect it to the thermal protection box 1.

[0042] The front side of the thermal protection box 1 refers to the side connected to the photovoltaic inverter 8, and the back side of the thermal protection box 1 is opposite to the front side and is provided with a handle 43 (to be introduced below), which can be rotated to drive the mounting arm 2 to move.

[0043] Among them, combined Figure 2 As shown, the limiting portion 21 may be a "U"-shaped frame connected to the connecting plate 22 so as to clamp the photovoltaic inverter 8 through the side walls at the upper and lower ends to prevent the photovoltaic inverter 8 from shifting.

[0044] Wherein, in some embodiments, reference Figure 3 As shown, a mounting groove for accommodating a driving structure is formed in the thermal protection box 1, and the driving structure includes a guide portion 3 for guiding the movement of the mounting arm 2 and a transmission portion 4 connected to the guide portion 3, the guide portion 3 includes a bidirectional screw 31 extending along the extension direction of the mounting groove and a connecting block 32 threadedly connected to the bidirectional screw 31, and the end of the connecting block 32 away from the transmission portion 4 is connected to the mounting arm 2.

[0045] The installation groove can extend horizontally along the thermal protection box 1, or vertically along the thermal protection box 1, and is not limited to Figure 3The transmission part 4 can drive the guide part 3 to move, thereby driving the installation arm 2 to move, so that the limit part 21 of the installation arm 2 is attached to or separated from the photovoltaic inverter 8, thereby realizing the installation or removal of the photovoltaic inverter 8. Figure 3 As shown, the threads of the bidirectional screw 31 are opposite from the middle part to the two ends. Under the drive of the transmission part 4, the connecting blocks 32 connected to the two ends of the bidirectional screw 31 can move away from or approach each other along the bidirectional screw 31, so that the mounting arms 2 connected to the connecting blocks 32 move away from or approach each other. Preferably, a plurality of mounting blocks 34 can be sleeved on the bidirectional screw 31, and the plurality of mounting blocks 34 are fixedly connected to the mounting grooves, and the mounting blocks 34 are located between the connecting blocks 32 and the middle part of the bidirectional screw 31. Such a configuration can further strengthen the bidirectional screw 31 and avoid the instability of the bidirectional screw 31, thereby ensuring that the mounting arm 2 can clamp the photovoltaic inverter 8 and ensure that the photovoltaic inverter 8 is connected to the thermal protection box 1.

[0046] Furthermore, combined with Figure 2 and Figure 3 As shown, a guide groove 5 is provided on the front of the thermal protection box 1 , and a guide block 33 penetrating the guide groove 5 is connected to one side of the connecting block 32 . The guide block 33 cooperates with the guide groove 5 to limit the movement of the connecting block 32 .

[0047] Specifically, Figure 2 As shown, a guide block 33 can be installed on the side of the connecting block 32 facing the front side of the thermal protection box 1. The guide block 33 matches the guide groove 5 opened on the front side of the thermal protection box 1. The guide block 33 can slide along the length direction of the guide groove 5, thereby further limiting the moving direction of the connecting block 32 and preventing the connecting block 32 from shaking and shifting.

[0048] And, refer to Figure 3 As shown, the transmission part 4 includes a worm 41 rotatably mounted on the back side of the thermal protection box 1 and extending to the inside of the thermal protection box 1, and a worm wheel 42 coaxially connected to the middle part of the bidirectional screw 31. The worm 41 is meshed with the worm wheel 42 to drive the worm wheel 42 to rotate when the worm 41 rotates, thereby driving the bidirectional screw 31 to rotate.

[0049] Specifically, combined Figure 3 As shown, one end of the worm 41 extending into the thermal protection box 1 is provided with a thread, which is meshed with a worm wheel 42. Rotating the worm 41 can drive the worm wheel 42 to rotate, and the worm wheel 42 is coaxially connected to the middle part of the bidirectional screw 31, thereby driving the bidirectional screw 31 to rotate, so that the connecting block 32 threadedly connected to the bidirectional screw 31 moves, and then drives the mounting arm 2 to move, so that the limiting part 21 of the mounting arm 2 is fitted or separated from the photovoltaic inverter 8, thereby realizing the installation or disassembly of the photovoltaic inverter 8.

[0050] Preferably, one end of the worm 41 located outside the thermal protection box 1 may be connected to a handle 43 to facilitate manual operation to rotate the worm 41 .

[0051] Wherein, in some embodiments, reference Figure 2 As shown, at least two groups of through holes 6 evenly arranged in the vertical direction are provided in the thermal protection box 1 , a cooling fan 61 for dissipating heat from the photovoltaic inverter 8 is installed in the through hole 6 , and filters 62 are installed at both ends of the through hole 6 .

[0052] Specifically, Figure 2 As shown, after the photovoltaic inverter 8 is connected to the thermal protection box 1 through the mounting arm 2, the cooling fan 61 in the thermal protection box 1 can be started to dissipate heat and cool the photovoltaic inverter 8, and filters 62 can be installed at both ends of the through hole 6 accommodating the cooling fan 61 to prevent dust and powder from entering the thermal protection box 1.

[0053] Wherein, in some embodiments, combined Figure 1 As shown, two partition frames 7 are arranged crosswise on the back of the thermal protection box 1 , and a gap is left between the connecting end 73 of the partition frame 7 and the thermal protection box 1 .

[0054] Specifically, combined Figure 1 As shown, two partition frames 7 are arranged on the back of the thermal protection box 1. The two partition frames 7 are cross-shaped and are located in the gap between the through holes 6, and the connecting end 73 of the partition frame 7 can be connected to other components to be installed. When other components to be installed are connected to the connecting end 73, since the connecting end 73 of the partition frame 7 can leave a gap with the thermal protection box 1, it can ensure that other components to be installed are not in a fitted state with the thermal protection box 1, effectively avoiding affecting the use effect of the heat dissipation fan 61, and also providing space for accommodating the handle 43. At the same time, the handle 43 is arranged at the gap formed between other components to be installed and the thermal protection box 1, and people other than the staff will not notice that the disassembly handle 43 is here, which has a certain anti-theft property.

[0055] Further, refer to Figure 1 As shown, the partition frame 7 includes a bonding plate 71 bonded to the back of the thermal protection box 1 and a vertical plate 72 connected to both ends of the bonding plate 71 and extending in a direction perpendicular to the bonding plate 71, and the end of the vertical plate 72 is connected to the connecting end 73.

[0056] Specifically, combined Figure 1As shown, by vertically connecting the vertical plate 72 with the bonding plate 71 bonded to the back of the thermal protection box 1, a gap is formed between the connection end 73 connected to the end of the vertical plate 72 and the thermal protection box 1, which facilitates ventilation and heat dissipation by the heat dissipation fan 61. Of course, in other embodiments, the vertical plate 72 and the bonding plate 71 can also be connected at an angle, as long as there is space between the connection end 73 and the thermal protection box 1 to accommodate the operator rotating the handle 43, and ventilation and heat dissipation are possible.

[0057] A second aspect of the utility model provides a photovoltaic inverter, which includes the above-mentioned photovoltaic inverter protection device.

[0058] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0059] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A protection device for a photovoltaic inverter, characterized in that: The invention comprises a thermal protection box (1), a plurality of mounting arms (2) mounted on the thermal protection box (1) opposite to each other, and a driving structure connected to the mounting arms (2) in a transmission manner, wherein the mounting arms (2) comprise limiting portions (21) with openings opposite to each other, the limiting portions (21) matching the size of a photovoltaic inverter (8), and the driving structure being configured to be able to drive the mounting arms (2) to move so that the limiting portions (21) are attached to the photovoltaic inverter (8) and the photovoltaic inverter (8) is connected to the thermal protection box (1).

2. The photovoltaic inverter protection device according to claim 1, characterized in that: The limiting portion (21) is connected to the driving structure via a connecting plate (22), and the connecting plate (22) is arranged so that a gap is left between the limiting portion (21) and the front face of the thermal protection box (1).

3. The photovoltaic inverter protection device according to claim 2, characterized in that: The limiting portion (21) is a U-shaped frame connected to the connecting plate (22).

4. The photovoltaic inverter protection device according to claim 1, characterized in that: The thermal protection box (1) is provided with a mounting groove for accommodating the driving structure, the driving structure comprising a guide portion (3) for guiding the movement of the mounting arm (2) and a transmission portion (4) connected to the guide portion (3) in a transmission manner, the guide portion (3) comprising a bidirectional screw (31) extending along an extension direction of the mounting groove and a connecting block (32) threadedly connected to the bidirectional screw (31), and an end of the connecting block (32) away from the transmission portion (4) is connected to the mounting arm (2).

5. The photovoltaic inverter protection device according to claim 4, characterized in that: A guide groove (5) is provided on the front side of the thermal protection box (1); one side of the connecting block (32) is connected to a guide block (33) that passes through the guide groove (5); the guide block (33) and the guide groove (5) cooperate to limit the movement of the connecting block (32).

6. The photovoltaic inverter protection device according to claim 4, characterized in that: The transmission part (4) comprises a worm (41) rotatably mounted on the back side of the thermal protection box (1) and extending into the interior of the thermal protection box (1), and a worm wheel (42) coaxially connected to the middle portion of the bidirectional screw (31); the worm (41) is meshed with the worm wheel (42) so that when the worm (41) rotates, the worm wheel (42) is driven to rotate, thereby driving the bidirectional screw (31) to rotate.

7. The photovoltaic inverter protection device according to claim 1, characterized in that: At least two groups of through holes (6) evenly arranged in a vertical direction are provided in the thermal protection box (1), a cooling fan (61) for dissipating heat from the photovoltaic inverter (8) is installed in the through hole (6), and filter screens (62) are installed at both ends of the through hole (6).

8. The photovoltaic inverter protection device according to claim 1, characterized in that: It also comprises two partition frames (7) which are arranged crosswise on the back of the thermal protection box (1), and a space is left between the connecting end (73) of the partition frame (7) and the thermal protection box (1).

9. The photovoltaic inverter protection device according to claim 8, characterized in that: The partition frame (7) comprises a bonding plate (71) bonded to the back side of the thermal protection box (1) and a vertical plate (72) connected to both ends of the bonding plate (71) and extending in a direction perpendicular to the bonding plate (71), and the end of the vertical plate (72) is connected to the connection end (73).

10. A photovoltaic inverter, characterized in that: The photovoltaic inverter comprises a protection device for the photovoltaic inverter according to any one of claims 1-9.

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