Cabinet assembly and photovoltaic power plant

Abstract

To provide a cabinet assembly capable of reducing heat dissipation cost of a conductive member and a photovoltaic power plant.SOLUTION: A cabinet assembly includes at least one cabinet (1), a conductive member (3) and a protective cover assembly (4). The conductive member (3) is electrically connectable to a cabinet output member of the cabinet (1), and the protective cover assembly (4) is provided in the conductive member (3). A first heat dissipation duct (41) is provided in the protective cover assembly (4), and a second heat dissipation duct (11) is provided in the cabinet (1). The first heat dissipation duct (41) communicates with the second heat dissipation duct (11) of the at least one cabinet (1) and dissipates heat of the conductive member (3). The heat of the conductive member (3) is dissipated by utilizing a heat dissipation air flow in the second heat dissipation duct (11) in the cabinet (1), thereby reducing a fan and an assembly and reducing heat dissipation cost of the conductive member.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to the technical field of power systems, and more particularly to cabinet assemblies and solar power plants. [Background technology]

[0002] In a power system of a power plant, cabinets such as photovoltaic grid-tied inverters are connected to other equipment (e.g., transformers) via conductive members.

[0003] During the operation of the cabinet, the conductive members will generate heat, and in order to ensure the cabinet and conductive members operate normally, natural cooling or forced air cooling can be used to dissipate the heat from the conductive members.

[0004] To improve the heat dissipation effect, forced air cooling is usually adopted to dissipate heat from conductive components, which requires a fan, and the fan itself and the structural components of the fan assembly increase costs.

[0005] As described above, how to dissipate heat from conductive members so as to reduce the cost of dissipating heat from conductive members is currently a problem that must be solved urgently by those skilled in the art. Summary of the Invention [Problem to be solved by the invention]

[0006] In view of this, the present disclosure aims to provide a cabinet assembly and a solar power plant that reduce the heat dissipation cost of conductive members. [Means for solving the problem]

[0007] To achieve the above objectives, the present disclosure provides the following technical solutions.

[0008] a cabinet assembly including at least one cabinet, a conductive member, and a protective cover assembly; the conductive member is electrically connectable to a cabinet output member of the cabinet, the conductive member being provided on the protective cover assembly; The protective cover assembly is provided with a first heat dissipation duct, and the cabinet is provided with a second heat dissipation duct, and the first heat dissipation duct communicates with the second heat dissipation duct of at least one of the cabinets to dissipate heat from the conductive member.

[0009] Preferably, the second air intake port of the second heat dissipation duct is connected to the external environment, the second air exhaust port of the second heat dissipation duct is connected to the first air intake port of the first heat dissipation duct, and the first air exhaust port of the first heat dissipation duct is connected to the external environment.

[0010] Preferably, the second heat dissipation duct and the first heat dissipation duct are connected in series.

[0011] Preferably, the protective cover assembly is located at the bottom end of the cabinet, the second air outlet is located at the bottom end of the cabinet, and the first air inlet is located at the top end of the protective cover assembly.

[0012] Preferably, the protective cover assembly is located on a side of the cabinet, the second exhaust vent is located on a side of the cabinet closer to the protective cover assembly, and the first air intake vent is located on a side of the protective cover assembly closer to the cabinet.

[0013] Preferably, the first exhaust port is located on the bottom or side of the protective cover assembly.

[0014] Preferably, the protective cover assembly is located at the bottom end of the cabinet, the second exhaust vent is located at the bottom end of the cabinet, the first air inlet is located at the top end of the protective cover assembly, and the first exhaust vent is located on the bottom or side of the protective cover assembly.

[0015] Preferably, the protective cover assembly is located on a side of the cabinet, the second exhaust vent is located on the side of the cabinet closer to the protective cover assembly, the first air intake vent is located on the side of the protective cover assembly closer to the cabinet, and the first exhaust vent is located on the bottom or side of the protective cover assembly.

[0016] Preferably, the first air inlet protrudes from the protective cover assembly, and the cabinet is provided with a first recess, the first recess accommodating the first air inlet.

[0017] Preferably, the number of first air intake ports is at least one, and the second heat dissipation duct corresponds to at least one of the first air intake ports; and / or The number of the first exhaust ports is at least one, and the second heat dissipation duct corresponds to the at least one first exhaust port.

[0018] Preferably, there are at least two cabinets, there are at least two second heat dissipation ducts, and the at least two second heat dissipation ducts correspond to the same first air outlet.

[0019] Preferably, there are at least two cabinets, and the cabinets are arranged sequentially along a first direction perpendicular to the vertical direction.

[0020] Preferably, the cabinet and the protective cover assembly are hermetically connected at a communication point between the second heat dissipation duct and the first heat dissipation duct.

[0021] Preferably, the cabinet is provided with a connection chamber, the connection chamber and the second heat dissipation duct are relatively spaced apart, and the cabinet output member is provided in the connection chamber. The cabinet assembly further includes a duct separator that separates the connection chamber and the first heat dissipation duct, and the duct separator has a mounting hole through which the conductive member or the cabinet output member passes.

[0022] Preferably, the duct separator and the protective cover assembly are hermetically connected to separate the connection chamber and the first heat dissipation duct.

[0023] Preferably, the protective cover assembly is provided with an attachment opening, through which the conductive member or the cabinet output member passes, and the duct separator closes the attachment opening; the mounting opening and the communication opening in the first heat dissipation duct that communicates with the second heat dissipation duct are sequentially arranged along a first direction perpendicular to a vertical direction; and / or The mounting opening protrudes from the protective cover assembly, and the cabinet is provided with a second recess, which receives the mounting opening.

[0024] Preferably, the first heat dissipation duct has a first exhaust port communicating with an external environment, and the cabinet assembly further includes a protective net provided at the first exhaust port.

[0025] Preferably, the protective net and the protective cover assembly are removably attached to each other.

[0026] Preferably, the protective cover assembly is provided with a guide rail, and the protective net and the guide rail are slidably fitted together; and / or The protective net is provided with an insertable / removable position limiting member, the inserting / removing direction of the inserting / removing position limiting member being perpendicular to the inserting direction of the protective net, the protective cover assembly is provided with a position limiting hole, and the inserting / removing position limiting member is engaged with the position limiting hole to limit the position of the protective net, and / or The protective net is removably connected to the protective cover assembly via fasteners.

[0027] Preferably, the cabinet assembly further includes a detector for detecting whether the protective net needs to be de-dusted.

[0028] Preferably, the detector is provided in the conductive member, and the detector is used to detect whether the temperature in the conductive member exceeds a set value and thereby detect whether dust removal of the protective net is required; and / or The cabinet assembly further includes an alarm signally connected to the detector.

[0029] Based on the cabinet assembly provided above, the present disclosure further provides a solar power plant, which includes a voltage conversion device and the cabinet assembly described in any one of the above, and the conductive member is electrically connected to an input end of the voltage conversion device.

[0030] In a cabinet assembly provided by the present disclosure, the conductive member is electrically connectable to a cabinet output member of the cabinet, the conductive member is provided in a protective cover assembly, the protective cover assembly is provided with a first heat dissipation duct, and the cabinet is provided with a second heat dissipation duct, the first heat dissipation duct communicating with at least one second heat dissipation duct of the cabinet. In this way, the cabinet assembly allows the heat dissipation airflow in the second heat dissipation duct of the cabinet to flow through the conductive member in the first heat dissipation duct, thereby realizing the heat dissipation of the conductive member by using the heat dissipation airflow in the second heat dissipation duct of the cabinet, that is, realizing the combination of heat dissipation of the conductive member and heat dissipation of the cabinet, and eliminating the need for a separate fan to dissipate heat from the conductive member, thereby saving the cost of the fan itself and the cost required for assembling the fan and effectively reducing the cost of heat dissipation of the conductive member.

[0031] In addition, in the cabinet assembly provided by the present disclosure, forced air cooling of the conductive members is performed using the forced air cooling heat dissipation of the cabinet, which effectively improves the heat dissipation effect of the conductive members compared to natural cooling of the conductive members, thereby allowing the cross-sectional area of ​​the conductive members to be reduced and the cost of the conductive members to be significantly reduced.

[0032] Furthermore, in the cabinet assembly provided by the present disclosure, the heat dissipation airflow in the second heat dissipation duct in the cabinet is used to dissipate heat from the conductive members, so that if the cabinet fails, the cabinet will no longer operate and the conductive members will no longer generate heat. In this way, the conductive members do not need to dissipate heat, which avoids failures caused by the conductive members being unable to effectively dissipate heat and improves reliability.

[0033] Furthermore, in the cabinet assembly provided by the present disclosure, in a situation where the second heat dissipation ducts of at least two cabinets are both connected to the first heat dissipation duct, if some cabinets (e.g., one cabinet) fail and stop working while the other cabinets are still working, the heat dissipation airflow of the still working cabinet can flow through the first heat dissipation duct and dissipate heat from the conductive members, thereby avoiding the problem in the prior art that the conductive members are unable to dissipate heat when the fans that individually dissipate heat from the conductive members do not work, and improving the heat dissipation reliability of the conductive members.

[0034] In order to more clearly explain the technical solutions in the embodiments of the present disclosure or the prior art, the following briefly introduces drawings necessary for the description of the embodiments or the prior art. Obviously, the drawings in the following description are embodiments of the present disclosure, and those skilled in the art may obtain other drawings according to the drawings provided without exerting any effort that amounts to an inventive step. [Brief explanation of the drawings]

[0035] [Figure 1] 1 is a structural schematic diagram of a cabinet assembly provided by an embodiment of the present disclosure; [Figure 2]FIG. 10 is another structural schematic diagram of a cabinet assembly provided by an embodiment of the present disclosure. [Figure 3] FIG. 10 is another structural schematic diagram of a cabinet assembly provided by an embodiment of the present disclosure. [Figure 4] The heat dissipation state of the cabinet assembly shown in Figure 3 [Figure 5] Figure 3 shows another heat dissipation state of the cabinet assembly. [Figure 6] FIG. 10 is another structural schematic diagram of a cabinet assembly provided by an embodiment of the present disclosure. [Figure 7] Plan view of the structure shown in Figure 6 [Figure 8] FIG. 10 is another structural schematic diagram of a cabinet assembly provided by an embodiment of the present disclosure. [Figure 9] Plan view of the structure shown in Figure 8 [Figure 10] FIG. 10 is another structural schematic diagram of a cabinet assembly provided by an embodiment of the present disclosure. [Figure 11] Side view of the structure shown in Figure 10 [Figure 12] FIG. 10 is another structural schematic diagram of a cabinet assembly provided by an embodiment of the present disclosure. [Figure 13] FIG. 10 is another structural schematic diagram of a cabinet assembly provided by an embodiment of the present disclosure. [Figure 14] Plan view of the structure shown in Figure 13 [Figure 15] FIG. 10 is another structural schematic diagram of a cabinet assembly provided by an embodiment of the present disclosure. [Figure 16] FIG. 1 is a plan view of a cabinet assembly structure provided by an embodiment of the present disclosure; [Figure 17] Cross section of Figure 16 along the AA direction [Figure 18] Enlarged structural schematic diagram of part B in Figure 17 [Figure 19] Enlarged structural diagram of part C in Figure 17 [Figure 20] FIG. 1 is a perspective view of a cabinet assembly provided by an embodiment of the present disclosure. [Figure 21] Enlarged schematic diagram of the structure of part D in Figure 20 [Figure 22] FIG. 1 is a perspective view of a cabinet in a cabinet assembly provided by an embodiment of the present disclosure. [Figure 23] FIG. 1 is a front view of a cabinet in a cabinet assembly provided by an embodiment of the present disclosure. [Figure 24] Cross section of Figure 23 in the EE direction [Figure 25] Assembly diagram of a protective cover assembly and a conductive member in a cabinet assembly provided by an embodiment of the present disclosure. [Figure 26] Assembly diagram of a protective cover assembly and a protective net in a cabinet assembly provided by an embodiment of the present disclosure. [Figure 27] FIG. 1 is a perspective view of a protective net in a cabinet assembly provided by an embodiment of the present disclosure; [Figure 28] 1 is a partial structural schematic diagram of a solar power plant provided by an embodiment of the present disclosure; DETAILED DESCRIPTION OF THE INVENTION

[0036] The following clearly and completely describes the technical solutions in the embodiments of the present disclosure, in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without any creative work fall within the scope of protection of the present disclosure.

[0037] The following is a clear and complete description of the technical solutions in the embodiments of the present disclosure, combined with the drawings in the embodiments of the present disclosure. The terms used in the following embodiments are merely intended to describe specific embodiments, but are not intended to limit the present disclosure. As used in the specification and appended claims of the present disclosure, the singular terms "a," "one," "one kind," "said," "above," "the," and "this" are also intended to include other terms such as "one or more," unless the context clearly dictates otherwise. Furthermore, in the embodiments of the present disclosure, "one or more" should be understood to refer to one, two, or more than two.

[0038] References to "one embodiment" or "some embodiments" or the like herein mean that one or more embodiments of the present disclosure include the particular feature, structure, or characteristic described in connection with that embodiment. Thus, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in other embodiments," etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless specifically emphasized otherwise. The terms "comprise," "contain," "have," and variations thereof all mean "including but not limited to," unless specifically emphasized otherwise.

[0039] In the embodiments of the present disclosure, "plurality" refers to two or more. In describing the embodiments of the present disclosure, terms such as "first" and "second" are used merely to distinguish between the described purposes, and cannot be understood as indicating or implying relative importance, or as indicating or implying order.

[0040] Embodiments of the present disclosure provide a cabinet assembly and a solar power plant that reduce the heat dissipation cost of conductive members.

[0041] The operation of devices inside electrical cabinets (cabinets), such as inverters, converters, low-voltage cabinets, and distribution boxes, generates heat, which needs to be dissipated. The cabinets employ forced air cooling, i.e., the cabinet draws in outside air, and the airflow cools the internal devices before being discharged from the cabinet. Based on this, the present disclosure utilizes the heat dissipation airflow discharged from the cabinet to dissipate heat from conductive components, thereby reducing the heat dissipation cost of the conductive components.

[0042] As shown in FIGS. 1 to 3, the cabinet assembly provided by the embodiment of the present disclosure includes at least one cabinet 1, a conductive member 3, and a protective cover assembly 4.

[0043] As shown in Fig. 1, there is one cabinet 1, as shown in Fig. 2, there are two cabinets 1, and as shown in Fig. 3, there are three cabinets 1. In actual situations, there may be four, five, six or more cabinets 1, and the number of cabinets 1 is not limited in this embodiment.

[0044] Each cabinet 1 is provided with a second heat dissipation duct 11. The cabinet 1 may also include a fan (not shown) for driving air through the second heat dissipation duct 11, i.e., the second heat dissipation duct 11 is adapted for forced air cooling. The fan may be provided outside or inside the second heat dissipation duct 11, and may be located near the air inlet or the air outlet of the second heat dissipation duct 11. The air inlet of the second heat dissipation duct 11 may be referred to as a second air inlet 14, and the air outlet of the second heat dissipation duct 11 may be referred to as a second air outlet 15. At least one of the second air inlet 14 and the second air outlet 15 is connected to the external environment, which refers to the external environment of the cabinet 1 and the protective cover assembly 4.

[0045] The arrangement, number and type of the fans can be selected according to the actual situation, and this embodiment does not limit the same.

[0046] The second heat dissipation duct 11 is located inside the cabinet 1, and the specific structure and shape of the second heat dissipation duct 11 can be selected according to the actual situation, and is not limited thereto in this embodiment.

[0047] Each cabinet 1 is further provided with a cabinet output member 13 , and the conductive member 3 can be electrically connected to the cabinet output member 13 .

[0048] In addition, in a situation where operation of the cabinet 1 is required, the conductive member 3 is electrically connected to the cabinet output member 13, and in a situation where operation of the cabinet 1 is not required, the conductive member 3 may further be electrically connected to an output member of another device, or the conductive member 3 may not be electrically connected to the output member of any device.

[0049] The cabinet output member 13 may be a copper bar, an aluminum bar, a copper-aluminum composite bar, etc. The conductive member 3 may be a bus bar, for example, a copper bar, an aluminum bar, a copper-aluminum composite bar, etc. This embodiment does not limit the specific structures of the cabinet output member 13 and the conductive member 3.

[0050] The electrical connection method between the cabinet output member 13 and the conductive member 3 can be selected according to the actual situation, and is not limited in this embodiment.

[0051] In a situation where there are at least two cabinets 1, the cabinet output members 13 of at least two cabinets 1 may be selected to be electrically connected to the conductive member 3, and in this situation, the conductive member 3 realizes the merging of at least two cabinets 1.

[0052] 25, in a situation where the conductive member 3 has a junction function, the conductive member 3 includes a connection segment 31 and a junction segment 32, one end of the connection segment 31 can be electrically connected to the cabinet output member 13, and the other end of the connection segment 31 is electrically connected to the junction segment 32. The junction segment 32 may be a single member, or may be formed by a plurality of segments that are electrically connected in sequence by the junctions thereof.

[0053] In a situation where there are at least two cabinets 1, as shown in Figures 2 and 3, the at least two cabinets 1 may be selected to be arranged sequentially along a first direction, which is the left-right direction in Figures 2 and 3 and is perpendicular to the vertical direction, and which may be the joining direction of the conductive members 3, which may be understood as the longitudinal direction of the joining segment 32. In this way, joining and installation are made convenient.

[0054] The conductive member 3 is provided in a protective cover assembly 4, and a first heat dissipation duct 41 is provided in the protective cover assembly 4. At least a portion of the conductive member 3 is located inside the first heat dissipation duct 41.

[0055] The first heat dissipation duct 41 communicates with the second heat dissipation duct 11 of at least one cabinet 1 to dissipate heat from the conductive member 3. In this embodiment, when the second heat dissipation duct 11 is adapted for forced air cooling, the first heat dissipation duct 41 is also adapted for forced air cooling, that is, the fan of the cabinet 1 is used to drive air to flow through the second heat dissipation duct 11 and the first heat dissipation duct 41.

[0056] For example, there may be three cabinets 1, and the first heat dissipation duct 41 may be selected to be connected to the second heat dissipation duct 11 of one cabinet 1, the first heat dissipation duct 41 may be selected to be connected to the second heat dissipation duct 11 of two cabinets 1, or the first heat dissipation duct 41 may be selected to be connected to the second heat dissipation duct 11 of three cabinets 1.

[0057] In the cabinet assembly provided by the above embodiment, the conductive member 3 can be electrically connected to the cabinet output member 13 of the cabinet 1, the conductive member 3 is provided in the protective cover assembly 4, the protective cover assembly 4 is provided with a first heat dissipation duct 41, and the cabinet 1 is provided with a second heat dissipation duct 11, the first heat dissipation duct 41 communicating with at least one second heat dissipation duct 11 of the cabinet 1 to dissipate heat from the conductive member 3. In this way, the cabinet assembly can utilize the heat dissipation airflow in the second heat dissipation duct 11 in the cabinet 1 to flow through the conductive member 3 in the first heat dissipation duct 41, and realize the heat dissipation of the conductive member 3 by utilizing the heat dissipation airflow in the second heat dissipation duct 11 in the cabinet 1, that is, realize the combination of heat dissipation of the conductive member 3 and heat dissipation of the cabinet 1, and eliminate the need to provide a separate fan to dissipate heat from the conductive member 3, thereby saving the cost of the fan itself and the cost required for assembling the fan and effectively reducing the heat dissipation cost of the conductive member 3.

[0058] In the cabinet assembly provided by the above embodiment, forced air cooling of the conductive member 3 is performed using forced air cooling heat dissipation of the cabinet 1, which effectively improves the heat dissipation effect of the conductive member 3 compared to natural cooling of the conductive member 3.

[0059] The maximum current that can be passed through the conductive member 3 is related to the temperature of the conductive member 3. When the temperature of the conductive member 3 is high, the maximum current that can be passed through the conductive member 3 is small, and when the temperature of the conductive member 3 is low, the maximum current that can be passed through the conductive member 3 is large. The maximum current that can be passed through the conductive member 3 is also related to the cross-sectional area of ​​the conductive member 3. The larger the cross-sectional area of ​​the conductive member 3, the larger the maximum current that can be passed through the conductive member 3. And the smaller the cross-sectional area of ​​the conductive member 3, the smaller the maximum current that can be passed through the conductive member 3. As described above, the above cabinet assembly improves the heat dissipation effect of the conductive member 3 and reduces the temperature of the conductive member 3, thereby increasing the maximum current that can be passed through the conductive member 3 and reducing the cross-sectional area of ​​the conductive member 3, thereby reducing the cost of the conductive member 3.

[0060] At the same time, in the cabinet assembly provided by the present disclosure, the heat dissipation airflow in the second heat dissipation duct 11 in the cabinet 1 is used to dissipate heat from the conductive member 3. If the cabinet 1 fails, the cabinet 1 will no longer operate and the conductive member 3 will no longer generate heat. Thus, the conductive member 3 does not need to dissipate heat, which avoids failures caused by the conductive member 3 being unable to effectively dissipate heat and improves reliability.

[0061] In the prior art forced air cooling method, the conductive members are installed in one chamber and a fan dissipates heat from the conductive members. If the fan malfunctions and stops working, the conductive members continue to generate heat, which prevents the conductive members from effectively dissipating heat and leads to failure and low reliability. Based on this, in the cabinet assembly provided by the embodiment of the present disclosure, the second heat dissipation ducts 11 of at least two cabinets 1 are both connected to the first heat dissipation duct 41. In this way, when one cabinet 1 (e.g., one cabinet 1) malfunctions and stops working while the other cabinet 1 is still working, the heat dissipation airflow from the still-working cabinet 1 can flow through the first heat dissipation duct 41 and dissipate heat from the conductive members 3.

[0062] 4, there are three cabinets 1, which are arranged sequentially along the first direction, i.e., along the left-right direction. If the middle cabinet 1 malfunctions and does not operate, the fan of that cabinet 1 will not operate, and there will be no heat dissipation airflow in the second heat dissipation duct 11. However, the left cabinet 1 and the right cabinet 1 operate normally, and the fans of these two cabinets 1 also operate normally, and there will be heat dissipation airflow in the second heat dissipation ducts 11 of these two cabinets 1. The heat dissipation airflow enters the first heat dissipation duct 41 and dissipates heat from the conductive member 3. As shown in FIG. 5, there are three cabinets 1, which are arranged sequentially along the first direction, i.e., along the left-right direction. If the cabinet 1 located on the left side, in the middle, malfunctions and does not operate, the fan of that cabinet 1 will not operate and there will be no heat dissipation airflow in the second heat dissipation duct 11; the cabinet 1 on the right side operates normally, the fan of that cabinet 1 also operates normally, and there will be heat dissipation airflow in the second heat dissipation duct 11 of the right cabinet 1, and the heat dissipation airflow will enter the first heat dissipation duct 41 and dissipate heat from the conductive member 3.

[0063] Therefore, the cabinet assembly provided by the above embodiment can avoid the problem in the prior art that the conductive member 3 cannot dissipate heat when the fan that dissipates heat individually from the conductive member 3 does not operate, thereby improving the heat dissipation reliability of the conductive member 3.

[0064] In the embodiment of the present disclosure, the second heat dissipation duct 11 has a second air inlet 14 and a second air outlet 15, both of which communicate with the external environment. The specific locations of the second air inlet 14 and the second air outlet 15 on the cabinet 1 can be determined according to the actual situation. For example, the second air inlet 14 can be located on the top or side of the cabinet 1, and the second air outlet 15 can be located on the bottom or side of the cabinet 1, but this embodiment is not limited thereto.

[0065] In some embodiments, the second air intake port 14 and the second exhaust port 15 of the second heat dissipation duct 11 are both connected to the external environment, and the first air intake port 42 and the first exhaust port of the first heat dissipation duct 41 are both connected to the second heat dissipation duct 11.

[0066] In other embodiments, the second air inlet 14 of the second heat dissipation duct 11 is connected to the outside environment, the second air outlet 15 of the second heat dissipation duct 11 is connected to the first air inlet 42 of the first heat dissipation duct 41, and the first air outlet 43 of the first heat dissipation duct 41 is connected to the outside environment. In such a situation, the second air outlet 15 is connected to the outside environment via the first heat dissipation duct 41.

[0067] In the above embodiment, air from the external environment enters the second heat dissipation duct 11 through the second air intake 14, then enters the first heat dissipation duct 41 through the second exhaust vent 15 and the first air intake vent 42, and finally is exhausted through the first exhaust vent 43.

[0068] In the above embodiment, the second heat dissipation duct 11 and the first heat dissipation duct 41 are connected in series. In the airflow direction, the second heat dissipation duct 11 is located upstream of the first heat dissipation duct 41. Of course, it is also possible to select such that a portion of the second heat dissipation duct 11 and the first heat dissipation duct 41 are connected in series, and another portion of the second heat dissipation duct 11 and the first heat dissipation duct 41 form two branches.

[0069] In some embodiments, the protective cover assembly 4 may be located at the bottom end of the cabinet 1, the second exhaust port 15 may be located at the bottom end of the cabinet 1, and the first intake port 42 may be located at the top end of the protective cover assembly 4. This facilitates communication between the second heat dissipation duct 11 and the first heat dissipation duct 41, and also facilitates electrical connection between the cabinet output member 13 and the conductive member 3.

[0070] In other embodiments, the protective cover assembly 4 may be located on a side of the cabinet 1, the second exhaust port 15 may be located on the side of the cabinet 1 closer to the protective cover assembly 4, and the first air intake port 42 may be located on the side of the protective cover assembly 4 closer to the cabinet 1. In this way, the height of the entire assembly can be reduced, and communication between the second heat dissipation duct 11 and the first heat dissipation duct 41 can be facilitated.

[0071] The side of the cabinet 1 refers to a side other than the top and bottom ends of the cabinet 1. One side of the protective cover assembly 4 refers to a side of the protective cover assembly 4 other than the top and bottom ends.

[0072] In some embodiments, the first exhaust vent 43 is located on the bottom or side of the protective cover assembly 4, thereby allowing convenient airflow exhaust.

[0073] In actual situations, the relative positions of the protective cover assembly 4 and the cabinet 1, and the position of the first air outlet 43 on the protective cover assembly 4 can be arbitrarily combined as long as heat dissipation and electrical connection are ensured.

[0074] As shown in Figures 1 to 5, the protective cover assembly 4 is located at the bottom end of the cabinet 1, the second exhaust port 15 is located at the bottom end of the cabinet 1, the first air intake port 42 is located at the top end of the protective cover assembly 4, and the first exhaust port 43 is located on the bottom surface of the protective cover assembly 4.

[0075] As shown in Figures 6 to 9, the protective cover assembly 4 is located at the bottom end of the cabinet 1, the second exhaust port 15 is located at the bottom end of the cabinet 1, the first air intake port 42 is located at the top end of the protective cover assembly 4, and the first exhaust port 43 is located on the side of the protective cover assembly 4.

[0076] 6 and 7 show a situation where there is one cabinet 1, and Fig. 8 and 9 show a situation where there are two cabinets 1. The "x" in Fig. 7 and 9 indicates that the airflow direction is perpendicular to the paper surface and faces backward.

[0077] As shown in Figures 10 to 12, the protective cover assembly 4 is located on the side of the cabinet 1, the second exhaust port 15 is located on the side of the cabinet 1 closer to the protective cover assembly 4, the first air intake port 42 is located on the side of the protective cover assembly 4 closer to the cabinet 1, and the first exhaust port 43 is located on the bottom surface of the protective cover assembly 4.

[0078] 10 and 11 show a situation where there is one cabinet 1, and Fig. 12 shows a situation where there are two cabinets 1, and the side view of the structure shown in Fig. 12 is the same as the structure shown in Fig. 11. The "·" in Fig. 10 and 12 indicates that the airflow direction is perpendicular to the paper surface and faces outward.

[0079] 13 to 15, protective cover assembly 4 is located on a side of cabinet 1, second exhaust port 15 is located on the side of cabinet 1 closer to protective cover assembly 4, first air intake port 42 is located on the side of protective cover assembly 4 closer to cabinet 1, and first exhaust port 43 is located on a side of protective cover assembly 4. Note that first exhaust port 43 is located on the side of protective cover assembly 4 farther from cabinet 1.

[0080] 13 and 14 show a situation where there is one cabinet 1, while Fig. 15 shows a situation where there are two cabinets 1. The "x" in Fig. 14 indicates that the airflow direction is perpendicular to the paper surface and faces backward. The "·" in Fig. 15 indicates that the airflow direction is perpendicular to the paper surface and faces outward.

[0081] In the embodiment of the present disclosure, the first air intake port 42 of the first heat dissipation duct 41 and the second exhaust port 15 of the second heat dissipation duct 11 are butted together and communicate with each other. In Figures 1 to 15, the position indicated by the dotted line indicated by the symbol "42 (15)" is the first air intake port 42 and also the second exhaust port 15.

[0082] In the embodiment of the present disclosure, the specific location of the second air inlet 14 of the second heat dissipation duct 11 can be selected according to the actual situation, and the embodiment is not limited thereto.

[0083] To facilitate communication between the first air inlet 42 and the second exhaust outlet 15, the first air inlet 42 protrudes from the protective cover assembly 4, and the cabinet 1 is provided with a first recess, which may be selected to accommodate the first air inlet 42. In this way, the first recess and the protruding first air inlet 42 realize mutual positional restrictions, which simplifies the installation of the protective cover assembly 4 and the cabinet 1 and also facilitates communication between the first air inlet 42 and the second exhaust outlet 15.

[0084] In practical situations, the cabinet assembly may be selected to have no such positional restrictions, and is not limited to the above embodiment.

[0085] In the embodiment of the present disclosure, the cabinet 1 has at least one second heat dissipation duct 11. The first heat dissipation duct 41 has at least one first air inlet 42, and the second heat dissipation duct 11 corresponds to at least one first air inlet 42. To simplify the structure, the second heat dissipation duct 11 may be selected to have a one-to-one correspondence with the first air inlet 42. In this situation, the cabinet 1 may have one second heat dissipation duct 11, and any two first air inlets 42 may be selected to be arranged sequentially along the arrangement direction of any two cabinets 1. Of course, the first heat dissipation duct 41 may have only one first air inlet 42, and all the second heat dissipation ducts 11 may be selected to communicate with the same first air inlet 42.

[0086] In the embodiment of the present disclosure, the first heat dissipation duct 41 has at least one first exhaust port 43. To improve the efficiency of discharging airflow to the external environment so as to improve the heat dissipation effect, the second heat dissipation duct 11 may be selected to correspond to at least one first exhaust port 43. To simplify the structure, the second heat dissipation duct 11 may be selected to correspond one-to-one to the first exhaust port 43. In this situation, the cabinet 1 may have one second heat dissipation duct 11, and any two first exhaust ports 43 may be selected to be arranged sequentially along the arrangement direction of any two cabinets 1.

[0087] In a situation where there are at least two cabinets 1, there are at least two second heat dissipation ducts 11, and the at least two second heat dissipation ducts 11 may be selected to correspond to the same first exhaust port 43. On this basis, the first heat dissipation duct 41 may be selected to have only one first exhaust port 43, so that all airflows are discharged to the external environment through only one first exhaust port 43.

[0088] In the embodiment of the present disclosure, in order to improve the heat dissipation effect of the conductive member 3, the cabinet 1 and the protective cover assembly 4 may be selected to be hermetically connected at the communication point between the second heat dissipation duct 11 and the first heat dissipation duct 41. In this way, wind can be prevented from entering, thereby improving the heat dissipation effect of the conductive member 3. The sealing structure between the cabinet 1 and the protective cover assembly 4 can be selected according to the actual situation, and can be achieved by sealing members such as sealant, weather strip, sealing ring, etc., but this embodiment is not limited thereto.

[0089] 16 to 18, a first sealing member 7 is provided at the first air intake port 42 of the protective cover assembly 4, and the protective cover assembly 4 and the cabinet 1 are hermetically connected via the first sealing member 7, i.e., the protective cover assembly 4 and the cabinet 1 are hermetically connected via the first sealing member 7 at the communication point between the second heat dissipation duct 11 and the first heat dissipation duct 41. Illustratively, the first sealing member 7 is a weather strip, and the protective cover assembly 4 and the cabinet 1 are compression-sealed by the weather strip.

[0090] In the embodiment of the present disclosure, the cabinet output member 13 may be located inside or outside the second heat dissipation duct 11. Accordingly, the electrical connection point between the cabinet output member 13 and the conductive member 3 may be located inside or outside the heat dissipation duct (the first heat dissipation duct 41 or the second heat dissipation duct 11).

[0091] In the embodiment of the present disclosure, as shown in Figures 16 and 17, in order to improve the degree of integration, the cabinet 1 and the protective cover assembly 4 may be selected to be integrated into an integrated platform 6. Of course, the cabinet 1 and the protective cover assembly 4 may be selected to be mounted on different platforms, and are not limited to the above structure.

[0092] To improve the reliability and guarding performance of the electrical connection and to prevent the heat dissipation airflow from affecting the electrical connection, the cabinet output member 13 may be selected to be outside the second heat dissipation duct 11. As shown in FIGS. 16 to 24, in some embodiments, the cabinet 1 is provided with a connection chamber 12, the connection chamber 12 and the second heat dissipation duct 11 are relatively spaced apart, and the cabinet output member 13 is provided in the connection chamber 12.

[0093] 19 and 21, the cabinet assembly further includes a duct separator 2, which separates the connecting chamber 12 from the first heat-dissipating duct 41. In this way, the heat-dissipating airflow is prevented from entering the connecting chamber 12.

[0094] The duct separator 2 may be understood as part of the cabinet 1, and in this situation, the duct separator 2 and the protective cover assembly 4 are hermetically connected to ensure that the duct separator 2 separates the connection chamber 12 and the first heat dissipation duct 41. In some embodiments, the protective cover assembly 4 is provided with a second sealing member 8, and the duct separator 2 and the protective cover assembly 4 are hermetically connected via the second sealing member 8. Illustratively, the second sealing member 8 is a weather strip, and the protective cover assembly 4 and the duct separator 2 are compression sealed by the weather strip.

[0095] In some other embodiments, the duct separator 2 and the protective cover assembly 4 may be selected to be sealed in other ways, and are not limited to the above embodiment.

[0096] The duct separator 2 may also be understood as a part of the protective cover assembly 4, and in this situation, the duct separator 2 is hermetically connected to the cabinet 1 so as to ensure that the duct separator 2 separates the connection chamber 12 from the first heat dissipation duct 41. The sealing structure between the duct separator 2 and the cabinet can be selected according to the actual situation, and is not limited thereto in this embodiment.

[0097] The duct separator 2 has a mounting hole through which the conductive member 3 passes, i.e., the connection chamber 12 has a connection port 16 through which the conductive member 3 passes. In this way, the cabinet output member 13 and the conductive member 3 are electrically connected within the connection chamber 12. Of course, the duct separator 2 may be selected to have a mounting hole through which the cabinet output member 13 passes, i.e., the connection chamber 12 has a connection port 16 through which the cabinet output member 13 passes. In this way, the cabinet output member 13 and the conductive member 3 are electrically connected within the first heat dissipation duct 41.

[0098] In the embodiment of the present disclosure, the protective cover assembly 4 is provided with a mounting opening 44. In a situation where the duct separator 2 has a mounting hole through which the conductive member 3 passes, the mounting opening 44 is the one through which the conductive member 3 passes, and in a situation where the duct separator 2 has a mounting hole through which the cabinet output member 13 passes, the mounting opening 44 is the one through which the cabinet output member 13 passes. The duct separator 2 closes the mounting opening 44.

[0099] 25, the mounting opening 44 and the communication opening (first air intake opening 42) of the first heat dissipation duct 41 that communicates with the second heat dissipation duct 11 are sequentially arranged along a first direction perpendicular to the vertical direction. In a situation where there are at least two cabinets 1, the first direction is the direction in which any two cabinets 1 are sequentially arranged.

[0100] The mounting opening 44 protrudes from the protective cover assembly 4, and the cabinet 1 is provided with a second recess that accommodates the mounting opening 44. In this way, the second recess and the mounting opening 44 are positioned relative to each other, which makes it easy to mount the cabinet 1 and the protective cover assembly 4.

[0101] In a situation where the cabinet 1 is provided with a first recess, the first recess and the second recess may be selected to be the same recess 17, as shown in Fig. 23. Of course, the first recess and the second recess may be selected to be different recesses.

[0102] In the embodiment of the present disclosure, when the first heat dissipation duct 41 has a first exhaust port 43 communicating with the external environment, as shown in Figures 17 and 26, the cabinet assembly further includes a protective net 5 provided at the first exhaust port 43, thus preventing foreign matter from entering the first heat dissipation duct 41 through the first exhaust port 43 and improving the guarding performance of the entire cabinet assembly.

[0103] After the protective net 5 has been used for a certain period of time, dust and other foreign matter will accumulate on the protective net 5, and therefore the protective net 5 needs to be cleaned regularly. To facilitate cleaning and replacement of the protective net 5, the protective net 5 and the protective cover assembly 4 are detachably connected. The specific manner of the detachable and fixed connection can be selected according to the actual situation, and for example, the detachable and fixed connection can be achieved by means of fastening members, an engaging connection structure, etc., and this embodiment is not limited thereto.

[0104] In order to facilitate the maintenance of the protective net 5, the protective net 5 and the protective cover assembly 4 may be selected to be detachably inserted.

[0105] The protective cover assembly 4 is provided with a guide rail 45, and the protective net 5 is slidably fitted into the guide rail 45. This facilitates the installation of the protective net 5. The sliding fit direction between the guide rail 45 and the protective net 5 is the same as the insertion direction of the protective net 5.

[0106] To improve the stability of the protective net 5, the protective net 5 is provided with a removable insertion / removal position limiting member 55, the insertion / removal direction of which is perpendicular to the insertion direction of the protective net 5, and the protective cover assembly 4 is provided with a position limiting hole, which is used to engage with the position limiting hole to limit the position of the protective net 5. In this way, a position limiting engagement between the protective net 5 and the protective cover assembly 4 is achieved, and this position limiting engagement is detachable.

[0107] The insertion / removal position limiting member 55 may be disposed around the periphery of the protective net 5 or at the outer end of the protective net 5 in the insertion direction.

[0108] The insertion / removal position limiting member 55 may be a spring pin or other structure, and this embodiment is not limited thereto.

[0109] The protective net 5 does not require screw installation, which contributes to easy maintenance, improves maintenance efficiency, and reduces the need for tools.

[0110] In practical situations, the protective net 5 may be selected to be detachably connected to the protective cover assembly 4 via a fastening member, and the insertion / removal position limiting member 55 and the fastening member may be used in combination.

[0111] 27, in some embodiments, the protective net 5 includes a protective net main body 51 and a protective net frame 52 provided around the periphery of the protective net main body 51. The protective net frame 52 and the protective cover assembly 4 are detachably connected to each other.

[0112] In order to facilitate the fixed connection between the protective net frame 52 and the protective cover assembly 4, the protective net frame 52 is provided with a connecting plate 53, and the connecting plate 53 and the protective cover assembly 4 are detachably connected.

[0113] The connecting plate 53 may be perpendicular to the protective net frame 52, parallel to the protective net frame 52, or inclined relative to the protective net frame 52. To fix the protective net 5, the connecting plate 53 may be selected to be perpendicular to the protective net frame 52 and to be detachably connected to the protective cover assembly 4 via fastening members.

[0114] The connection plate 53 is provided with connection holes 54 through which fastening members pass, and the protective cover assembly 4 is provided with fixing holes for fixing the fastening members.

[0115] In a situation where the protective net 5 and the protective cover assembly 4 are engaged to limit the position, the insertion / removal position limiting member 55 may be provided on the protective net frame 52.

[0116] For example, the first exhaust port 43 is located on the bottom surface of the protective cover assembly 4, the insertion direction of the protective net 5 is horizontal, the sliding engagement direction between the guide rail 45 and the protective net 5 is perpendicular to the vertical direction, and the protective net frame 52 and the protective cover assembly 4 engage to limit their position in the vertical direction; or the first exhaust port 43 is located on the side of the protective cover assembly 4, the insertion direction of the protective net 5 is vertical, the guide rail 45 and the protective net 5 slide and engage in the vertical direction, and the position limiting engagement direction between the protective net frame 52 and the protective cover assembly 4 is perpendicular to the vertical direction.

[0117] In some embodiments, the cabinet assembly further includes a detector for detecting whether the protective net 5 needs to be de-dusted.

[0118] The detector may be a temperature detector, which is used to detect whether the temperature of the conductive member 3 exceeds a set value (first set value) and thereby detect whether dust removal from the protective net 5 is necessary. In this situation, the detector is provided in the conductive member 3. In a situation where the conductive member 3 includes a connection segment 31 and a merging segment 32, the detector is provided in the merging segment 32. Of course, the detector may be selected to be provided in a portion of the connection segment 31 located inside the first heat dissipation duct 41.

[0119] Furthermore, if it is detected that the temperature of the conductive member 3 exceeds the first set value, it is detected that dust removal from the protective net 5 is necessary, and if it is detected that the temperature of the conductive member 3 does not exceed the first set value, it is detected that dust removal from the protective net 5 is not necessary.

[0120] The detector may also be a flow rate detector, which is used to detect whether the flow rate at the first exhaust port 43 is smaller than a second set value to determine whether dust removal is required for the protective net 5. The detector is located inside or outside the first heat dissipation duct 41.

[0121] Furthermore, if the flow rate at the first exhaust port 43 is detected to be smaller than the second set value, it is detected that dust removal from the protective net 5 is necessary, and if the flow rate at the first exhaust port 43 is detected to be greater than or equal to the second set value, it is detected that dust removal from the protective net 5 is not necessary.

[0122] The detector may be a pressure detector, which is used to detect whether the pressure at the first exhaust port 43 exceeds a third set value to determine whether dust removal from the protective net 5 is necessary. The detector is located inside or outside the first heat dissipation duct 41. If the detector detects that the pressure at the first exhaust port 43 exceeds the third set value, it determines that dust removal from the protective net 5 is necessary, and if the detector detects that the pressure at the first exhaust port 43 does not exceed the third set value, it determines that dust removal from the protective net 5 is not necessary.

[0123] In order to conveniently remind the user to clean the protective net 5, the cabinet assembly further includes an alarm signal-connected to the detector. When the detector detects that the protective net 5 needs to be cleaned, the alarm will sound an alarm. The alarm may be an audio alarm, a light alarm, or other types of alarms.

[0124] Based on the cabinet assembly provided by the above embodiments, an embodiment of the present disclosure further provides a solar power plant, which, as shown in FIG. 28 , includes a voltage conversion device 9 and a cabinet assembly as described in the above embodiments, and the conductive member 3 is electrically connected to the input end of the voltage conversion device 9.

[0125] The cabinet may be an inverter, and the voltage conversion device 9 may be a medium voltage conversion device, for example a transformer.

[0126] The cabinet assembly provided by the above embodiment has the above technical effects, and since the above solar power station includes the above cabinet assembly, the above solar power station also has corresponding technical effects, which will not be detailed in this specification.

[0127] The above description of the disclosed embodiments will enable those skilled in the art to make or use the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Thus, the present disclosure is not limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. [Explanation of symbols]

[0128] 1 Cabinet 11 Second heat dissipation duct 12 Connecting Room 13 Cabinet output member 14...Second air supply port 15 Second exhaust port 16 Connection port 17 Recess 2. Duct separator 3 Conductive material 31 Connection Segments 32 Merging Segments 4 Protective cover assembly 41 First heat dissipation duct 42...1st air supply port 43 First exhaust port 44 Mounting port 45 Guide rail 5 Protective net 51 Protective net body 52 Protective net frame 53 Connection plate 54 Connection hole 55 Insertion / removal position limiting member 6. Integrated Platform 7 First sealing member 8 Second sealing member 9. Voltage conversion equipment

Claims

1. The device includes at least one cabinet (1), a conductive member (3), and a protective cover assembly (4), The conductive member (3) can be electrically connected to a cabinet output member (13) of the cabinet (1), and the conductive member (3) is provided on the protective cover assembly (4), The protective cover assembly (4) is provided with a first heat dissipation duct (41), and the cabinet (1) is provided with a second heat dissipation duct (11), and the first heat dissipation duct (41) communicates with the second heat dissipation duct (11) of at least one of the cabinets (1) to dissipate heat from the conductive member (3).

1. A cabinet assembly comprising:

2. A second air intake port (14) of the second heat dissipation duct (11) communicates with the outside environment, a second air exhaust port (15) of the second heat dissipation duct (11) communicates with a first air intake port (42) of the first heat dissipation duct (41), and a first air exhaust port (43) of the first heat dissipation duct (41) communicates with the outside environment.

2. The cabinet assembly of claim 1.

3. The second heat dissipation duct (11) and the first heat dissipation duct (41) are connected in series.

3. The cabinet assembly of claim 2.

4. The protective cover assembly (4) is located at the bottom end of the cabinet (1), the second exhaust port (15) is located at the bottom end of the cabinet (1), and the first air intake port (42) is located at the top end of the protective cover assembly (4).

3. The cabinet assembly of claim 2.

5. The protective cover assembly (4) is located on a side of the cabinet (1), the second exhaust port (15) is located on a side of the cabinet (1) closer to the protective cover assembly (4), and the first air intake port (42) is located on a side of the protective cover assembly (4) closer to the cabinet (1).

3. The cabinet assembly of claim 2.

6. The first exhaust port (43) is located on the bottom or side of the protective cover assembly (4).

3. The cabinet assembly of claim 2.

7. The protective cover assembly (4) is located at the bottom end of the cabinet (1), the second exhaust port (15) is located at the bottom end of the cabinet (1), the first air inlet (42) is located at the top end of the protective cover assembly (4), and the first exhaust port (43) is located at the bottom or side of the protective cover assembly (4).

3. The cabinet assembly of claim 2.

8. The protective cover assembly (4) is located on a side of the cabinet (1), the second exhaust port (15) is located on a side of the cabinet (1) closer to the protective cover assembly (4), the first air intake port (42) is located on a side of the protective cover assembly (4) closer to the cabinet (1), and the first exhaust port (43) is located on a bottom or side of the protective cover assembly (4).

3. The cabinet assembly of claim 2.

9. The first air intake (42) protrudes from the protective cover assembly (4), and the cabinet (1) is provided with a first recess, which accommodates the first air intake (42).

3. The cabinet assembly of claim 2.

10. The first air intake (42) is at least one, and the second heat dissipation duct (11) corresponds to at least one of the first air intake (42); and / or The first exhaust port (43) is at least one, and the second heat dissipation duct (11) corresponds to at least one of the first exhaust ports (43).

3. The cabinet assembly of claim 2.

11. There are at least two cabinets (1), there are at least two second heat dissipation ducts (11), and the at least two second heat dissipation ducts (11) correspond to the same first exhaust port (43).

3. The cabinet assembly of claim 2.

12. The cabinets (1) are at least two in number and are arranged sequentially along a first direction perpendicular to the vertical direction.

2. The cabinet assembly of claim 1.

13. The cabinet (1) and the protective cover assembly (4) are hermetically connected at a communication point between the second heat dissipation duct (11) and the first heat dissipation duct (41).

2. The cabinet assembly of claim 1.

14. The cabinet (1) is provided with a connection chamber (12), the connection chamber (12) and the second heat dissipation duct (11) are relatively spaced apart, and the cabinet output member (13) is provided in the connection chamber (12), The cabinet assembly further includes a duct separator (2), which separates the connection chamber (12) from the first heat dissipation duct (41), and which has a mounting hole through which the conductive member (3) or the cabinet output member (13) passes.

2. The cabinet assembly of claim 1.

15. The duct separator (2) and the protective cover assembly (4) are hermetically connected to separate the connection chamber (12) from the first heat dissipation duct (41).

15. The cabinet assembly of claim 14.

16. The protective cover assembly (4) is provided with a mounting opening (44), through which the conductive member (3) or the cabinet output member (13) passes, and the duct separator (2) closes the mounting opening (44); The mounting opening (44) and the communication opening in the first heat dissipation duct (41) that communicates with the second heat dissipation duct (11) are arranged sequentially along a first direction perpendicular to a vertical direction, and / or The mounting hole (44) protrudes from the protective cover assembly (4), and the cabinet (1) is provided with a second recess, which accommodates the mounting hole (44).

15. The cabinet assembly of claim 14.

17. The first heat dissipation duct (41) has a first exhaust port (43) communicating with the outside environment, and the cabinet assembly further includes a protective net (5) provided at the first exhaust port (43). A cabinet assembly according to any one of claims 1 to 16.

18. The protective net (5) and the protective cover assembly (4) are detachably attached to each other.

18. The cabinet assembly of claim 17.

19. The protective cover assembly (4) is provided with a guide rail (45), and the protective net (5) and the guide rail (45) are slidably fitted together; and / or The protective net (5) is provided with an insertable / removable position limiting member (55), the inserting / removing direction of the inserting / removing position limiting member (55) is perpendicular to the inserting direction of the protective net (5), the protective cover assembly (4) is provided with a position limiting hole, and the inserting / removing position limiting member (55) is engaged with the position limiting hole to limit the position of the protective net (5), thereby limiting the position of the protective net (5); and / or The protective net (5) is detachably connected to the protective cover assembly (4) via fastening members.

20. The cabinet assembly of claim 18.

20. Further comprising a detector for detecting whether the protective net (5) needs to be cleaned of dust.

18. The cabinet assembly of claim 17.

21. The detector is provided in the conductive member (3), and the detector is used to detect whether the temperature inside the conductive member (3) exceeds a set value and thereby detect whether dust removal from the protective net (5) is necessary; and / or the cabinet assembly further includes an alarm signally connected to the detector; 21. The cabinet assembly of claim 20.

22. a voltage conversion device (9) and the cabinet assembly according to any one of claims 1 to 16, wherein the conductive member (3) is electrically connected to an input end of the voltage conversion device (9); A solar power plant characterized by:

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