Protection assembly and inverter

Abstract

The utility model discloses a protection assembly and an inverter, the inverter is provided with an output terminal and an input terminal, the protection assembly is installed on the inverter, and the protection assembly comprises a protection cover and a separator plate arranged on the protection cover. The partition plate divides the space in the protective cover into a first protective cavity used for accommodating the output terminal and a second protective cavity used for accommodating the input terminal. The protective cover provided by the utility model can protect the input terminal and the output terminal of the inverter at the same time, does not need to be provided with two split protective structures, is simple in structure, and is convenient to produce and install. In the long-term operation process of the inverter, the protective cover can effectively protect the cable at the lower port of the photovoltaic inverter, prevents the cable from being damaged by people or the outside, can effectively prevent serious accidents caused by expansion of hidden dangers, is firm and durable, and only needs to regularly inspect the integrity of the protective cover.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of inverter protection, in particular to a protection assembly and inverter. BACKGROUND

[0002] In the photovoltaic power generation process, the photovoltaic inverter is a power adjustment device composed of semiconductor devices, mainly used for converting DC power into AC power. The photovoltaic assembly is collected into the inverter through the cable, and there are many cables at the collection place, which are exposed, and there are risks and hidden dangers in safe operation.

[0003] The DC side cable and AC output of the photovoltaic inverter in the related art are exposed or run through the protection tube, which is easy to be damaged by human and animals, and the protection tube has poor weather resistance. Since the photovoltaic assembly is in the power generation state, the DC cable is live, and when the cable is severely damaged, it may cause fire or accidents and other hidden dangers. SUMMARY

[0004] The utility model discloses a kind of protection assemblies and inverters, to solve the deficiency in prior art, can the wiring place and cable in inverter play comprehensive protection function.

[0005] In order to achieve one of the above purposes, the utility model provides a protection assembly for protecting the input terminal and output terminal of the inverter, the protection assembly comprises a protective cover and a partition plate arranged on the protective cover, and the partition plate separates the space in the protective cover into a first protective cavity for accommodating the output terminal and a second protective cavity for accommodating the input terminal.

[0006] As a further improvement of an embodiment of the utility model, the protective cover comprises a first cover body and a second cover body, the partition plate is arranged at the connection position of the first cover body and the second cover body, the first cover body and the partition plate define the first protective cavity, and the second cover body and the partition plate define the second protective cavity.

[0007] As a further improvement of an embodiment of the utility model, the first cover body comprises a first part defining a wiring area and a second part defining a cable collection area, the wiring area and the cable collection area are in communication to form the first protective cavity, and in the O-X direction, the length of the first part is greater than the length of the second part.

[0008] As a further improvement of an embodiment of the utility model, the second part and the second cover body extend away from the side of the inverter along the O-Z direction, and the end face of the second part away from the inverter is flush with the end face of the second cover body away from the inverter.

[0009] As a further improvement of the embodiment of the utility model, the second part is arranged at the position of the first cover body close to the second cover body, the first part has a guide wall, the guide wall is located at the side of the first part away from the inverter, and the guide wall gradually inclines to the second part in the direction from the first cover body to the second cover body.

[0010] As a further improvement of the embodiment of the utility model, the second cover body has an extension part extending towards the inverter, and the extension part is connected with the inverter.

[0011] As a further improvement of the embodiment of the utility model, a transition wall is arranged between the extension wall and the first cover body, and the transition wall is used for matching the shape at the corner position of the inverter.

[0012] As a further improvement of the embodiment of the utility model, the first cover body and the second cover body are both provided with an inspection window, and the first cover body and the second cover body are respectively connected with a first observation window and a second observation window which can open and close the inspection window.

[0013] As a further improvement of the embodiment of the utility model, the observation window is a transparent glass plate.

[0014] In order to realize one of the above purposes, an inverter is provided in an embodiment of the utility model, which comprises the above protective assembly, the inverter comprises an input terminal and an output terminal, the output terminal is located in the first protective cavity, and the input terminal is located in the second protective cavity.

[0015] Compared with the prior art, the protective cover of the utility model can simultaneously protect the input terminal and the output terminal of the inverter, does not need to be provided with two separate protective structures, has a simple structure, and is convenient for production and installation. In the process of long-term operation of the inverter, the protective cover can effectively protect the lower port cable of the photovoltaic inverter, avoids damage of the cable by people or the outside world, can effectively prevent hidden dangers from expanding to cause serious accidents, is firm and durable, and only needs to be regularly inspected to be complete. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is an axonometric view of a protective assembly and an inverter provided by the utility model;

[0017] Figure 2 is an axonometric view of a protective assembly provided by the utility model;

[0018] Figure 3 is an axonometric view of another perspective of a protective assembly provided by the utility model, wherein a perspective structure is embodied;

[0019] Figure 4is a partial structure diagram of a protection assembly connected with an inverter, wherein a front protection cover part is hidden;

[0020] Figure 5 is a connection structure of a first observation window and a protection cover;

[0021] Figure 6 is an axonometric view of the inverter.

[0022] Reference signs:

[0023] 10, protection cover; 11, first protection cavity; 12, second protection cavity; 13, first cover body; 131, first part; 132, second part; 133, guide wall; 14, second cover body; 141, extension part; 142, transition wall; 20, partition plate; 30, first observation window; 40, second observation window; 50, lock catch structure; 60, inverter; 61, output terminal; 62, input terminal. DETAILED DESCRIPTION

[0024] The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model and cannot be explained as the limitation of the utility model.

[0025] The terms for indicating spatial relative positions such as "upper", "upper side", "lower", "lower side" and the like used in the embodiments are used to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings for the purpose of convenience of explanation. The terms for indicating spatial relative positions can be intended to include different positions of the device in use or working other than the positions shown in the drawings. For example, "upper", "lower", "left", "right", "horizontal", "vertical" in the embodiments are spatial relative positions of the inverter in the normal use state.

[0026] The terms first, second and the like in the utility model are only used for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features; in addition, it is to be explained that, unless otherwise explicitly specified and limited, the term "connection" should be understood in a broad sense, for example, the connection can be direct connection or indirect connection through an intermediate medium, can be fixed connection or movable connection or detachable connection or integral connection. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] In order to more clearly explain the structure in the embodiments, the O-X direction is defined as the length direction of the inverter, the O-Y direction is defined as the width direction of the inverter, and the O-Z direction is defined as the height direction of the inverter. At the same time, in order for the person skilled in the art to better understand the technical scheme in the utility model, the following will combine the drawings in the embodiments of the utility model to make a specific description. Figures 1-6The technical scheme in the embodiment of the utility model is clearly and completely described.

[0028] An embodiment of the utility model provides a protection assembly, refer to Figures 1-4 The protection assembly is used for protecting the input terminal 62 and the output terminal 61 of the inverter 60, the protection assembly is a structure prepared separately, and can be installed on the inverter 60.The protection assembly includes a protection cover 10 and a partition plate 20 arranged on the protection cover 10, the main body part of the protection cover 10 is arranged as a long rectangular fence structure, and the fence structure defines a protection space.The partition plate 20 can be fixedly connected between the opposite two side walls of the fence structure, the partition plate 20 divides the protection space into a first protection cavity 11 and a second protection cavity 12, the first protection cavity 11 is used for accommodating the output terminal 61, and the second protection cavity 12 is used for accommodating the input terminal 62.

[0029] The protection cover 10 of the utility model can protect the input terminal 62 and the output terminal 61 of the inverter 60 simultaneously, does not need to set two split protection structures, is simple in structure, and is convenient for production and installation.

[0030] The protection cover 10 can be integrally formed or split, if the protection cover 10 is arranged as a split structure, the protection cover 10 can include a first cover body 13 and a second cover body 14, the partition plate 20 is arranged at the connecting position of the first cover body 13 and the second cover body 14, and the partition plate 20 can be fixedly connected with the first cover body 13 or the second cover body 14.The first cover body 13 and the partition plate 20 define the first protection cavity 11, and the second cover body 14 and the shelf define the second protection cavity 12.In the embodiment, the length dimension of the first protection cavity 11 is greater than that of the second protection cavity 12, and in actual production, the length dimensions of the first protection cavity 11 and the second protection cavity 12 are matched with the distribution areas of the output terminal 61 and the input terminal 62 respectively.

[0031] Further research by the skilled person finds that the cable protection cover of the lower port of the inverter 60 in the related art only protects the lower direct current cable port or alternating current cable port, and a connecting bridge and a main bridge need to be additionally connected, which is time-consuming in actual construction.

[0032] To solve the above problems, in the present embodiment, the first cover body 13 comprises a first part 131 extending along the O-X direction and a second part 132 extending along the O-Z direction, the length dimension of the first part 131 is adapted to the distribution area of the output terminal 61 in the inverter 60. When the protective cover 10 is installed on the inverter 60, the second part 132 extends towards the side away from the inverter 60, i.e. the second part 132 extends downwards, and the lower end edge of the second part 132 is provided in an open manner, and the cable connected with the output terminal 61 can be led out to the outside of the protective cover 10 through the opening at the lower end of the second part 132. The second cover body 14 also extends downwards along the O-Z direction, the lower end edge of the second cover body 14 is flush with the lower end edge of the second part 132, and the lower end edge of the second cover body 14 is provided in an open manner, and the cable connected with the input terminal 62 can be led out to the outside of the protective cover 10 through the opening at the lower end of the second cover body 14.

[0033] In the actual wiring and assembly process, the photovoltaic assembly is connected with the inverter 60 through a large number of cables, and the first cover body 13 and the second cover body 14 extending downwards along the O-Z direction can better protect the cables, and the lower end edge of the protective cover 10 can be directly connected with the cable bridge, and the installation of the protective assembly is also more convenient.

[0034] Along the O-X direction, the length L1 of the first part 131 is greater than the length L2 of the second part 132, so that along the O-X direction, the area of the protective chamber defined by the first part 131 is greater than the area of the protective chamber defined by the second part 132. Since the first part 131 is close to the wiring terminal position of the inverter 60, the purpose of such arrangement is to form a wiring area in the first part 131 and a collection area in the second part 132, and the wiring area and the collection area are in communication.

[0035] The greater length dimension of the wiring area can ensure sufficient space for the cable to be connected with the wiring terminal, and the smaller length dimension of the collection area can have the effect of converging the cables, so that a large number of cables are relatively concentrated together and then led out from the second part 132, which is convenient for cable wiring and wiring.

[0036] The first part 131 has a guide wall 133 located at the bottom of the first cover 13. The guide wall 133 is an inclined wall panel, which gradually inclines towards the second part 132 from the direction of the first cover 13 to the second cover 14, that is, the closer to the second part 132, the more downwardly inclined the guide wall 133. In this way, the cable in the protective cover 10 can be guided. The cable outside the range of the collection area can be gently collected into the collection area under the action of the guide wall 133, so as to avoid the phenomenon of cable fracture caused by too large bending angle. Of course, in alternative embodiments, the guide wall 133 can also be provided in other shapes, such as an arc-shaped panel, a curved panel, etc., as long as it can guide and support the cable. This embodiment is not limited in particular.

[0037] The second part 132 is arranged at the position of the first cover 13 close to the second cover 14, so that the cable connected with the output terminal 61 and the access terminal can be adjacent, so that the lead of the cable is more concentrated, beautiful and convenient.

[0038] The second cover 14 has an extension part 141 extending towards the inverter 60, that is, the upper end edge of the second cover 14 is higher than that of the first cover 13. The extension part 141 can match the height of the input terminal 62 of the inverter 60, and the extension part 141 is fixedly connected with the bottom of the inverter 60. In this way, the gap between the protective cover 10 and the inverter 60 can be avoided, so that the protective cover 10 can better protect the inverter 60.

[0039] The transition wall 142 is arranged between the extension part 141 and the first cover 13. As an example, the transition wall 142 is provided as an inclined surface, and the shape of the transition wall 142 matches the shape of the corner position with height difference on the inverter 60. The transition wall 142 is fixedly connected with the side wall of the inverter 60, so as to avoid the gap at the connection position of the protective cover 10 and the inverter 60. Of course, the transition wall 142 can also be provided as a round corner, and the shape of the transition wall 142 is correspondingly arranged according to the shape of the corner position of the inverter 60. This embodiment is not limited in particular.

[0040] The protective cover 10 and the partition plate 20 described above are made of corrosion-resistant, high-temperature-resistant and high-strength plate material, so as to better protect the inverter 60.

[0041] Referring to Figure 3 and Figure 5The first cover body 13 is provided with a first inspection window in communication with the first protection cavity 11, and the first cover body 13 is connected with a first observation window 30 capable of opening and closing the first inspection window, and the first observation window 30 is provided as a transparent plate.

[0042] The second cover body 14 is provided with a second inspection window in communication with the second protection cavity 12, and the second cover body 14 is connected with a second observation window 40 capable of opening and closing the second inspection window, and the second observation window 40 is provided as a transparent plate.

[0043] The opening directions of the first observation window 30 and the second observation window 40 are different, the first observation window 30 can be arranged along the O-X direction, and the second observation window 40 can be arranged along the O-Y direction, so that the first observation window 30 and the second observation window 40 can be prevented from interfering when being opened, and the maintenance work of the staff can be facilitated.

[0044] The first observation window 30 and the second observation window 40 can be provided as transparent plates such as acrylic plates or glass plates, so that the wiring condition of the inverter 60 can be observed when the first observation window 30 and the second observation window 40 are closed.

[0045] The first observation window 30 and the second observation window 40 can be pivotally connected with the protection cover 10 through hinges, and the protection cover 10 and the first observation window 30 and the second observation window 40 are respectively provided with a lock catch structure 50, so that the first observation window 30 and the second observation window 40 can be limited, and other limiting structures such as a bolt structure or a buckle structure can also be used to limit the first observation window 30 and the second observation window 40, and the embodiment is not limited in particular.

[0046] An embodiment of the utility model provides a kind of inverter, referring to Figure 6 The inverter 60 includes output terminal 61 and input terminal 62, and the protection assembly is connected to the above-mentioned inverter 60, and the protection cover 10 is connected below the inverter 60, and the protection cover 10 and the inverter 60 can be connected by bolt connection, welding or adhesive connection. It should be noted that the protection cover 10 and the inverter 60 are connected as sealed as possible, to reduce the connection gap between the protection cover 10 and the inverter 60, so that the protection cover 10 can better protect the output terminal 61 and the input terminal 62 in the inverter 60.

[0047] The above detailed the structure, features and effect of the present application according to the embodiments shown in the drawings, the above is only a preferred embodiment of the present application, but the present application is not limited by the drawings shown in the implementation range, any change or modification according to the concept of the present application, or the equivalent embodiment of equivalent change, still not beyond the spirit of the specification and drawings, should be within the scope of the present application.

Claims

1. A protection assembly for protecting input terminals (62) and output terminals (61) of an inverter (60), characterized in that: The protection assembly comprises a protection cover (10) and a partition plate (20) arranged on the protection cover (10), the partition plate (20) separates the space in the protection cover (10) into a first protection cavity (11) for accommodating the output terminal (61) and a second protection cavity (12) for accommodating the input terminal (62).

2. The guard assembly of claim 1, wherein: The protection cover (10) comprises a first cover body (13) and a second cover body (14), the partition plate (20) is arranged at the connecting position of the first cover body (13) and the second cover body (14), the first cover body (13) and the partition plate (20) define the first protection cavity (11), and the second cover body (14) and the partition plate (20) define the second protection cavity (12).

3. The guard assembly of claim 2, wherein: The first cover body (13) comprises a first part (131) defining a wiring area and a second part (132) defining a collecting area, the wiring area and the collecting area are connected to form the first protection cavity (11), and the length of the first part (131) is greater than the length of the second part (132) in the O-X direction.

4. The guard assembly of claim 3, wherein: The second part (132) and the second cover body (14) extend away from the inverter (60) in the O-Z direction, and the end face of the second part (132) away from the inverter (60) is flush with the end face of the second cover body (14) away from the inverter (60).

5. The guard assembly of claim 4, wherein: The second part (132) is arranged at the position of the first cover body (13) close to the second cover body (14), the first part (131) has a guide wall (133) located on the side of the first part (131) away from the inverter (60), and the guide wall (133) gradually inclines to the second part (132) in the direction from the first cover body (13) to the second cover body (14).

6. The guard assembly of claim 2, wherein: The second cover body (14) has an extension part (141) extending towards the inverter (60), and the extension part (141) is connected to the inverter (60).

7. The guard assembly of claim 6, wherein: A transition wall (142) is arranged between the extension part (141) and the first cover body (13), and the transition wall (142) is used to match the shape at the corner position of the inverter (60).

8. The guard assembly of claim 2, wherein: The first cover body (13) and the second cover body (14) are both provided with an inspection window, and the first cover body (13) and the second cover body (14) are respectively connected with a first observation window (30) and a second observation window (40) which can open and close the inspection window.

9. The guard assembly of claim 8, wherein: The observation window is a transparent plate.

10. An inverter, characterized by: The protection assembly according to any one of claims 1-9 is arranged on the inverter (60) comprising an input terminal (62) and an output terminal (61), the output terminal (61) is located in the first protection cavity (11), and the input terminal (62) is located in the second protection cavity (12).

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