Cabinet assembly and photovoltaic power station

Abstract

The utility model discloses a cabinet assembly and a photovoltaic power station. The cabinet assembly comprises at least one cabinet, a conductive member and a protective cover assembly. The conductive part can be electrically connected with a cabinet output part of the cabinet, and the conductive part is arranged in the protective cover assembly; the protection cover assembly is provided with a first heat dissipation air channel, the cabinets are provided with second heat dissipation air channels, and the first heat dissipation air channel communicates with the second heat dissipation air channels of at least one cabinet so as to dissipate heat of the conductive parts. The cabinet assembly can utilize the heat dissipation airflow in the second heat dissipation air channel in the cabinet to flow through the conductive part in the first heat dissipation air channel, so that the heat dissipation airflow in the second heat dissipation air channel in the cabinet is utilized to dissipate heat of the conductive part, namely, the heat dissipation of the conductive part and the heat dissipation of the cabinet are coupled; and a fan does not need to be independently arranged to cool the conductive part, so that the cost of the fan and the cost required for assembling the fan are saved, and the cooling cost of the conductive part is effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and more specifically, to a cabinet assembly and a photovoltaic power station. Background Art

[0002] In the power system of a power station, cabinets such as photovoltaic grid-connected inverters are connected to other equipment (such as transformers) through conductive parts.

[0003] During the operation of the cabinet, the conductive parts will generate heat. In order to ensure the normal operation of the cabinet and the conductive parts, natural cooling or forced air cooling can be used to dissipate the heat of the conductive parts.

[0004] In order to improve the heat dissipation effect, forced air cooling is usually used to dissipate the heat of the conductive parts. The forced air cooling method requires a fan, and the fan itself and the structural parts for assembling the fan will increase the cost.

[0005] In summary, how to dissipate heat from a conductive component to reduce the heat dissipation cost of the conductive component is a problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0006] In view of this, an object of the present application is to provide a cabinet assembly and a photovoltaic power station to reduce the heat dissipation cost of conductive parts.

[0007] In order to achieve the above objectives, this application provides the following technical solutions:

[0008] A cabinet assembly, comprising: at least one cabinet, a conductive member, and a protective cover assembly;

[0009] Wherein, the conductive member can be electrically connected to the cabinet output member of the cabinet, and the conductive member is arranged in the protective cover assembly;

[0010] The protective cover assembly is provided with a first heat dissipation air duct, and the cabinet is provided with a second heat dissipation air duct. The first heat dissipation air duct is connected to the second heat dissipation air duct of at least one of the cabinets to dissipate heat for the conductive member.

[0011] Optionally, the second air inlet of the second heat dissipation duct is connected to the external environment, the second air outlet of the second heat dissipation duct is connected to the first air inlet of the first heat dissipation duct, and the first air outlet of the first heat dissipation duct is connected to the external environment.

[0012] Optionally, the second heat dissipation duct and the first heat dissipation duct are connected in series.

[0013] Optionally, 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.

[0014] Optionally, the protection cover assembly is located on a side of the cabinet, the second air outlet is located on a side of the cabinet close to the protection cover assembly, and the first air inlet is located on a side of the protection cover assembly close to the cabinet.

[0015] Optionally, the first air outlet is located on the bottom surface or side surface of the protective cover assembly.

[0016] Optionally, the protective cover assembly is located at the bottom of the cabinet, the second air outlet is located at the bottom of the cabinet, the first air inlet is located at the top of the protective cover assembly, and the first air outlet is located at the bottom or side of the protective cover assembly.

[0017] Optionally, the protective cover assembly is located on the side of the cabinet, the second air outlet is located on the side of the cabinet close to the protective cover assembly, the first air inlet is located on the side of the protective cover assembly close to the cabinet, and the first air outlet is located on the bottom or side of the protective cover assembly.

[0018] Optionally, the first air inlet protrudes from the protective cover assembly, and the cabinet is provided with a first recessed portion, which accommodates the first air inlet.

[0019] Optionally, there is at least one first air inlet, and the second heat dissipation duct corresponds to at least one of the first air inlet;

[0020] And / or, there is at least one first air outlet, and the second heat dissipation duct corresponds to at least one of the first air outlets.

[0021] Optionally, there are at least two cabinets, and there are at least two second heat dissipation air ducts, and at least two of the second heat dissipation air ducts correspond to the same first air outlet.

[0022] Optionally, there are at least two cabinets, and they are distributed in sequence along a first direction, and the first direction is perpendicular to the vertical direction.

[0023] Optionally, the cabinet and the protective cover assembly are sealed and connected at the connection point between the second heat dissipation air duct and the first heat dissipation air duct.

[0024] Optionally, the cabinet is provided with a connecting cavity, the connecting cavity and the second heat dissipation air duct are relatively isolated, and the cabinet output component is arranged in the connecting cavity;

[0025] The cabinet assembly further includes an air duct partition plate, which isolates the connection cavity and the first heat dissipation air duct, and the air duct partition plate has a mounting hole for the conductive member or the cabinet output member to pass through.

[0026] Optionally, the air duct partition and the protective cover assembly are sealed and connected to isolate the connecting cavity and the first heat dissipation air duct.

[0027] Optionally, the protective cover assembly is provided with an installation opening, the installation opening is for the conductive member or the cabinet output member to pass through, and the air duct partition closes the installation opening;

[0028] Wherein, the installation opening and the connecting opening in the first heat dissipation air duct connected with the second heat dissipation air duct are sequentially distributed along a first direction, and the first direction is perpendicular to the vertical direction;

[0029] And / or, the installation opening protrudes from the protection cover assembly, and the cabinet is provided with a second recessed portion, and the second recessed portion accommodates the installation opening.

[0030] Optionally, the first heat dissipation duct has a first air outlet connected to the external environment, and the cabinet assembly also includes a protective net arranged at the first air outlet.

[0031] Optionally, the protective net and the protective cover assembly are detachably connected.

[0032] Optionally, the protective cover assembly is provided with a guide rail, and the protective net and the guide rail are slidably matched;

[0033] And / or, the protective net is provided with a plug-in / pull-out limiting member, the plug-in / pull-out direction of the plug-in / pull-out limiting member is perpendicular to the plug-in direction of the protective net, the protective cover assembly is provided with a limiting hole, and the plug-in / pull-out limiting member is used to cooperate with the limiting hole to limit the protective net;

[0034] And / or, the protective net is detachably connected to the protective cover assembly via fasteners.

[0035] Optionally, the cabinet assembly further includes a detector, which is used to detect whether the protective net needs dust removal.

[0036] Optionally, the detector is disposed in the conductive member, and the detector is used to detect whether the temperature in the conductive member exceeds a set value to detect whether the protective net needs dust removal;

[0037] And / or, the cabinet assembly further comprises an alarm connected to the detector signal.

[0038] Based on the cabinet assembly provided above, the present application also provides a photovoltaic power station, which includes: a voltage conversion device, and the cabinet assembly described in any one of the above items; wherein the conductive member is electrically connected to the input end of the voltage conversion device.

[0039] In the cabinet assembly provided by the present application, the conductive part can be electrically connected to the cabinet output part of the cabinet, the conductive part is arranged in the protective cover assembly, the protective cover assembly is provided with a first heat dissipation duct, the cabinet is provided with a second heat dissipation duct, the first heat dissipation duct is connected to the second heat dissipation duct of at least one cabinet, in this way, the heat dissipation airflow in the second heat dissipation duct in the cabinet can be utilized to flow through the conductive part in the first heat dissipation duct, thereby realizing the use of the heat dissipation airflow in the second heat dissipation duct in the cabinet to dissipate heat for the conductive part, that is, the heat dissipation of the conductive part and the heat dissipation of the cabinet are coupled, and there is no need to separately set up a fan to dissipate heat for the conductive part, thereby saving the cost of the fan itself and the cost required to assemble the fan, and effectively reducing the heat dissipation cost of the conductive part.

[0040] At the same time, in the cabinet assembly provided by the present application, the conductive parts are forced to be cooled by forced air cooling of the cabinet, which effectively improves the heat dissipation effect of the conductive parts compared with the natural cooling of the conductive parts, thereby reducing the cross-sectional area of ​​the conductive parts and significantly reducing the cost of the conductive parts.

[0041] At the same time, in the cabinet assembly provided by the present application, the heat dissipation airflow in the second heat dissipation duct in the cabinet is used to dissipate heat for the conductive parts. When a failure occurs in the cabinet, the cabinet no longer works and the conductive parts no longer generate heat. In this way, the conductive parts do not need to dissipate heat, thereby avoiding failure of the conductive parts due to inability to effectively dissipate heat, thereby improving reliability.

[0042] Moreover, in the cabinet assembly provided by the present application, when the second heat dissipation ducts of at least two cabinets are connected to the first heat dissipation duct, when a part of the cabinets (for example, one cabinet) fails to work and the other cabinets are still working, the heat dissipation airflow of the cabinet that is still working can flow through the first heat dissipation duct, thereby dissipating the heat of the conductive parts. This can avoid the problem in the prior art that the conductive parts cannot be dissipated when the fan that dissipates heat for the conductive parts alone does not work, thereby improving the heat dissipation reliability of the conductive parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0044] Figure 1 A schematic diagram of the structure of a cabinet assembly provided in an embodiment of the present application;

[0045] Figure 2 Another structural schematic diagram of a cabinet assembly provided in an embodiment of the present application;

[0046] Figure 3 Another structural schematic diagram of a cabinet assembly provided in an embodiment of the present application;

[0047] Figure 4 for Figure 3 A heat dissipation state of the cabinet components shown;

[0048] Figure 5 for Figure 3 Another heat dissipation state of the cabinet components is shown;

[0049] Figure 6 Another structural schematic diagram of a cabinet assembly provided in an embodiment of the present application;

[0050] Figure 7 for Figure 6 a top view of the structure shown;

[0051] Figure 8 Another structural schematic diagram of a cabinet assembly provided in an embodiment of the present application;

[0052] Fig. 9 for Figure 8 a top view of the structure shown;

[0053] Fig.10 Another structural schematic diagram of a cabinet assembly provided in an embodiment of the present application;

[0054] Fig.11 for Fig.10 a side view of the structure shown;

[0055] Fig.12 Another structural schematic diagram of a cabinet assembly provided in an embodiment of the present application;

[0056] Fig.13 Another structural schematic diagram of a cabinet assembly provided in an embodiment of the present application;

[0057] Fig.14 for Fig.13 a top view of the structure shown;

[0058] Fig.15 Another structural schematic diagram of a cabinet assembly provided in an embodiment of the present application;

[0059] Fig.16 A top view of a structure of a cabinet assembly provided in an embodiment of the present application;

[0060] Fig.17 for Fig.16 AA section view;

[0061] Fig.18 for Fig.17 A schematic diagram of the enlarged structure of part B;

[0062] Fig.19 for Fig.17 A schematic diagram of the enlarged structure of the middle C part;

[0063] Fig. 20 An axonometric view of a cabinet assembly provided in an embodiment of the present application;

[0064] Fig.21 for Fig. 20 A schematic diagram of the enlarged structure of the D part;

[0065] Fig. 22 An axonometric view of a cabinet in a cabinet assembly provided in an embodiment of the present application;

[0066] Fig.23 A front view of a cabinet in a cabinet assembly provided in an embodiment of the present application;

[0067] Fig.24 for Fig.23 EE section view;

[0068] Fig.25 An assembly diagram of a protective cover assembly and a conductive member in a cabinet assembly provided in an embodiment of the present application;

[0069] Fig.26 An assembly diagram of a protective cover assembly and a protective net in a cabinet assembly provided in an embodiment of the present application;

[0070] Fig. 27 An axonometric view of a protective net in a cabinet assembly provided in an embodiment of the present application;

[0071] Fig.28 A partial structural schematic diagram of a photovoltaic power station provided in an embodiment of the present application.

[0072] Description of reference numerals:

[0073] 1 is a cabinet, 11 is a second heat dissipation duct, 12 is a connecting cavity, 13 is a cabinet output part, 14 is a second air inlet, 15 is a second air outlet, 16 is a connecting port, 17 is a recessed portion, 2 is an air duct partition, 3 is a conductive part, 31 is a connecting section, 32 is a converging section, 4 is a protective cover assembly, 41 is a first heat dissipation duct, 42 is a first air inlet, 43 is a first air outlet, 44 is a mounting port, 45 is a guide rail, 5 is a protective net, 51 is a protective net body, 52 is a protective net frame, 53 is a connecting plate, 54 is a connecting hole, 55 is a plug-in limiter, 6 is an integrated platform, 7 is a first sealing member, 8 is a second sealing member, and 9 is a voltage conversion device. DETAILED DESCRIPTION

[0074] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0075] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limitations on the present application. As used in the specification and the appended claims of the present application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear indication to the contrary in the context. It should also be understood that in the embodiments of the present application, "one or more" refers to one, two or more than two.

[0076] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0077] The multiple involved in the embodiments of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the words "first", "second", etc. are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order.

[0078] The embodiments of the present application provide a cabinet assembly and a photovoltaic power station to reduce the heat dissipation cost of conductive parts.

[0079] The components inside electrical cabinets (cabinets) such as inverters, converters, low-voltage cabinets, and distribution cabinets generate heat during operation, and the heat inside the cabinet needs to be discharged. The cabinet uses forced air cooling to dissipate heat, that is, the cabinet inhales external air, and the airflow cools the internal components before dissipating it out of the cabinet. Based on this, the present application uses the heat dissipation airflow discharged from the cabinet to dissipate heat from the conductive parts to reduce the heat dissipation cost of the conductive parts.

[0080] like Figure 1-Figure 3As shown, the cabinet assembly provided in the embodiment of the present application includes: at least one cabinet 1, a conductive member 3, and a protective cover assembly 4.

[0081] like Figure 1 As shown, the cabinet 1 is one; Figure 2 As shown, there are two cabinets 1; Figure 3 As shown, there are three cabinets 1. In actual situations, there may be four, five or more than six cabinets 1, and the present embodiment does not limit the number of cabinets 1.

[0082] Each cabinet 1 is provided with a second heat dissipation duct 11. It should be noted that the cabinet 1 may include a fan (not shown in the figure), which is used to drive air to flow through the second heat dissipation duct 11, that is, the second heat dissipation duct 11 is used for forced air cooling. The fan can be arranged outside the second heat dissipation duct 11 or inside the second heat dissipation duct 11, and the fan can be close to the air inlet or air outlet of the second heat dissipation duct 11. The air inlet of the second heat dissipation duct 11 can be called the second air inlet 14, and the air outlet of the second heat dissipation duct 11 can be called the 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. The external environment refers to the external environment of the cabinet 1 and the protective cover assembly 4.

[0083] The distribution, number and type of fans are selected according to actual conditions and are not limited in this embodiment.

[0084] The second heat dissipation duct 11 is located inside the cabinet 1 . The specific structure and shape of the second heat dissipation duct 11 are selected according to actual conditions, and this embodiment does not limit this.

[0085] Each cabinet 1 is also provided with a cabinet output component 13 , and the conductive component 3 can be electrically connected to the cabinet output component 13 .

[0086] It should be noted that when the cabinet 1 needs to work, the conductive member 3 is electrically connected to the cabinet output member 13. When the cabinet 1 does not need to work, the conductive member 3 can also be electrically connected to the output member of other equipment, or the conductive member 3 is not electrically connected to the output member of any equipment.

[0087] The cabinet output member 13 may be a copper bar, an aluminum bar, or a copper-aluminum composite bar, etc. The conductive member 3 may be a busbar, such as a copper bar, an aluminum bar, or a copper-aluminum composite bar, etc. The present embodiment does not limit the specific structures of the cabinet output member 13 and the conductive member 3.

[0088] The electrical connection method between the cabinet output component 13 and the conductive component 3 is selected according to actual conditions, and this embodiment does not limit this.

[0089] When there are at least two cabinets 1 , the cabinet output components 13 and the conductive components 3 of at least two cabinets 1 may be selected to be electrically connected. In this case, the conductive components 3 realize the current convergence of at least two cabinets 1 .

[0090] When the conductive member 3 has a current collecting function, such as Fig.25 As shown, the conductive member 3 includes a connecting section 31 and a bus section 32. One end of the connecting section 31 can be electrically connected to the cabinet output member 13, and the other end of the connecting section 31 is electrically connected to the bus section 32. The bus section 32 can be a single component, or it can be composed of multiple bus sections electrically connected in sequence.

[0091] In the case where there are at least two cabinets 1, Figure 2 and Figure 3 As shown, at least two cabinets 1 may be selected to be distributed in sequence along a first direction, where the first direction is Figure 2 and Figure 3 In the left and right directions, the first direction is perpendicular to the vertical direction, the first direction can be the converging direction of the conductive member 3, and the converging direction can be understood as the length direction of the converging section 32. In this way, converging and installation are facilitated.

[0092] The conductive member 3 is disposed in the protective cover assembly 4 , and the protective cover assembly 4 is provided with a first heat dissipation duct 41 . It should be noted that at least a portion of the conductive member 3 is located in the first heat dissipation duct 41 .

[0093] The first heat dissipation duct 41 is connected to 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 used for forced air cooling, the first heat dissipation duct 41 is also used 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.

[0094] Exemplarily, there are three cabinets 1, and the first heat dissipation duct 41 can be connected to the second heat dissipation duct 11 of one cabinet 1, the first heat dissipation duct 41 can be connected to the second heat dissipation duct 11 of two cabinets 1, or the first heat dissipation duct 41 can be connected to the second heat dissipation duct 11 of three cabinets 1.

[0095] In the cabinet assembly provided in 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 arranged in the protective cover assembly 4, the protective cover assembly 4 is provided with a first heat dissipation duct 41, the cabinet 1 is provided with a second heat dissipation duct 11, the first heat dissipation duct 41 is connected to the second heat dissipation duct 11 of at least one cabinet 1 to dissipate heat for the conductive member 3, in this way, the heat dissipation airflow in the second heat dissipation duct 11 in the cabinet 1 can be utilized to flow through the conductive member 3 in the first heat dissipation duct 41, and the heat dissipation airflow in the second heat dissipation duct 11 in the cabinet 1 is utilized to dissipate heat for the conductive member 3, that is, the heat dissipation of the conductive member 3 and the heat dissipation of the cabinet 1 are coupled, and there is no need to separately set up a fan to dissipate heat for 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.

[0096] In the cabinet assembly provided in the above embodiment, the forced air cooling of the cabinet 1 is used to cool the conductive member 3 , which effectively improves the heat dissipation effect of the conductive member 3 compared with the natural cooling of the conductive member 3 .

[0097] The maximum current that can flow through the conductive part 3 is related to the temperature of the conductive part 3. If the temperature of the conductive part 3 is high, the maximum current that can flow through the conductive part 3 is small; if the temperature of the conductive part 3 is low, the maximum current that can flow through the conductive part 3 is large. The maximum current that can flow through the conductive part 3 is also related to the cross-sectional area of ​​the conductive part 3. The larger the cross-sectional area of ​​the conductive part 3, the larger the maximum current that can flow through the conductive part 3; the smaller the cross-sectional area of ​​the conductive part 3, the smaller the maximum current that can flow through the conductive part 3. As mentioned above, the above-mentioned cabinet assembly improves the heat dissipation effect of the conductive part 3, thereby reducing the temperature of the conductive part 3, thereby increasing the maximum current that can flow through the conductive part 3, reducing the cross-sectional area of ​​the conductive part 3, and thus reducing the cost of the conductive part 3.

[0098] At the same time, in the cabinet assembly provided by the present application, the heat dissipation airflow in the second heat dissipation duct 11 in the cabinet 1 is used to dissipate heat for the conductive part 3. When a failure occurs in the cabinet 1, the cabinet 1 no longer works and the conductive part 3 no longer generates heat. In this way, the conductive part 3 does not need to dissipate heat, thereby avoiding failure of the conductive part 3 due to ineffective heat dissipation and improving reliability.

[0099] In the prior art forced air cooling method, the conductive part is arranged in a cavity, and the fan dissipates heat for the conductive part. When the fan does not work due to a malfunction, the conductive part continues to generate heat, resulting in the conductive part being unable to effectively dissipate heat and malfunctioning, and the reliability is low. Based on this, in the cabinet assembly provided in the embodiment of the present application, the second heat dissipation ducts 11 of at least two cabinets 1 are connected to the first heat dissipation duct 41. In this way, when a part of the cabinets 1 (for example, one cabinet 1) fails to work and the other cabinets 1 are still working, the heat dissipation airflow of the cabinet 1 that is still working can flow through the first heat dissipation duct 41, and the conductive part 3 can be dissipated.

[0100] For example, Figure 4 As shown, there are three cabinets 1, which are sequentially distributed along the first direction, that is, sequentially distributed along the left and right directions. The cabinet 1 in the middle fails and does not work, the fan of the cabinet 1 does not work, and there is no cooling airflow in the second cooling air duct 11; the cabinet 1 on the left and the cabinet 1 on the right work normally, the fans of these two cabinets 1 also work normally, and there is cooling airflow in the second cooling air duct 11 of these two cabinets 1, and the cooling airflow will enter the first cooling air duct 41 to dissipate heat for the conductive member 3. Figure 5 As shown, there are three cabinets 1, which are sequentially distributed along the first direction, that is, sequentially distributed along the left and right directions. The cabinets 1 on the left and in the middle fail to work, the fans of the cabinets 1 do not work, and there is no cooling airflow in the second cooling air duct 11; the cabinets 1 on the right work normally, the fans of the cabinets 1 also work normally, and there is cooling airflow in the second cooling air duct 11 of the cabinets 1 on the right, and the cooling airflow will enter the first cooling air duct 41 to dissipate heat for the conductive member 3.

[0101] Therefore, the cabinet assembly provided in 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 for the conductive member 3 alone does not work, thereby improving the heat dissipation reliability of the conductive member 3.

[0102] In the embodiment of the present application, the second heat dissipation duct 11 has a second air inlet 14 and a second air outlet 15, and the second air inlet 14 and the second air outlet 15 are both connected to the external environment. The specific positions of the second air inlet 14 and the second air outlet 15 on the cabinet 1 can be set according to actual conditions, for example, the second air inlet 14 is located on the top surface or side surface of the cabinet 1, and the second air outlet 15 is located on the bottom surface or side surface of the cabinet 1, etc., which is not limited in this embodiment.

[0103] In some embodiments, the second air inlet 14 and the second air outlet 15 of the second heat dissipating air duct 11 are both connected to the external environment, and the first air inlet 42 and the first air outlet of the first heat dissipating air duct 41 are both connected to the second heat dissipating air duct 11 .

[0104] In some other embodiments, the second air inlet 14 of the second heat dissipation duct 11 is connected to the external 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 external environment. In this case, the second air outlet 15 is connected to the external environment through the first heat dissipation duct 41.

[0105] In the above embodiment, air from the external environment enters the second heat dissipation duct 11 from the second air inlet 14 , then enters the first heat dissipation duct 41 from the second air outlet 15 and the first air inlet 42 , and finally is discharged from the first air outlet 43 .

[0106] In the above embodiment, the second heat dissipation duct 11 is connected in series with the first heat dissipation duct 41. It should be noted that 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 a part of the second heat dissipation duct 11 and the first heat dissipation duct 41 to be connected in series, and another part of the second heat dissipation duct 11 and the first heat dissipation duct 41 to form two branches.

[0107] In some embodiments, the protective cover assembly 4 can be located at the bottom of the cabinet 1, the second air outlet 15 can be located at the bottom of the cabinet 1, and the first air inlet 42 can be located at the top of the protective cover assembly 4. In this way, the second heat dissipation duct 11 is conveniently connected to the first heat dissipation duct 41, and the cabinet output member 13 and the conductive member 3 are conveniently electrically connected.

[0108] In other embodiments, the protective cover assembly 4 can be located on the side of the cabinet 1, the second air outlet 15 can be located on the side of the cabinet 1 close to the protective cover assembly 4, and the first air inlet 42 can be located on the side of the protective cover assembly 4 close to the cabinet 1. In this way, the height of the entire assembly is reduced, and the second heat dissipation duct 11 and the first heat dissipation duct 41 are connected conveniently.

[0109] It should be noted that the side of the cabinet 1 refers to the side other than the top and bottom of the cabinet 1. The side of the protective cover assembly 4 refers to the side other than the top and bottom of the protective cover assembly 4.

[0110] In some embodiments, the first air outlet 43 is located on the bottom or side of the protective cover assembly 4 to facilitate the discharge of air flow.

[0111] In actual situations, the relative positions of the protection cover assembly 4 and the cabinet 1, as well as the position of the first air outlet 43 on the protection cover assembly 4 can be arbitrarily combined as long as heat dissipation and electrical connection are ensured.

[0112] like Figure 1-Figure 5As shown, the protective cover assembly 4 is located at the bottom end of the cabinet 1 , the second air outlet 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 air outlet 43 is located at the bottom surface of the protective cover assembly 4 .

[0113] like Figure 6-Figure 9 As shown, the protection cover assembly 4 is located at the bottom end of the cabinet 1 , the second air outlet 15 is located at the bottom end of the cabinet 1 , the first air inlet 42 is located at the top end of the protection cover assembly 4 , and the first air outlet 43 is located at the side of the protection cover assembly 4 .

[0114] It should be noted that Figure 6 and Figure 7 The case where the cabinet 1 is one is shown. Figure 8 and Fig. 9 The case where there are two cabinets 1 is shown. Figure 7 and Fig. 9 The “×” in the figure indicates that the airflow direction is perpendicular to the paper surface and inward.

[0115] like Figure 10-12 As shown, the protective cover assembly 4 is located on the side of the cabinet 1, the second air outlet 15 is located on the side of the cabinet 1 close to the protective cover assembly 4, the first air inlet 42 is located on the side of the protective cover assembly 4 close to the cabinet 1, and the first air outlet 43 is located on the bottom surface of the protective cover assembly 4.

[0116] It should be noted that Fig.10 and Fig.11 The case where the cabinet 1 is one is shown. Fig.12 The figure shows the case where there are two cabinets 1. Fig.12 The side view of the structure shown is Fig.11 The structures shown are the same. Fig.10 and Fig.12 The “·” in the figure indicates that the airflow direction is perpendicular to the paper surface and outward.

[0117] like Figure 13-Figure 15 As shown, the protective cover assembly 4 is located on the side of the cabinet 1, the second air outlet 15 is located on the side of the cabinet 1 close to the protective cover assembly 4, the first air inlet 42 is located on the side of the protective cover assembly 4 close to the cabinet 1, and the first air outlet 43 is located on the side of the protective cover assembly 4. It should be noted that the first air outlet 43 is located on the side of the protective cover assembly 4 away from the cabinet 1.

[0118] It should be noted that Fig.13 and Fig.14 The case where the cabinet 1 is one is shown. Fig.15 The case where there are two cabinets 1 is shown. Fig.14 The “×” in the figure indicates that the airflow direction is perpendicular to the paper surface and inward. Fig.15 The “·” in the figure indicates that the airflow direction is perpendicular to the paper surface and outward.

[0119] In the embodiment of the present application, the first air inlet 42 of the first heat dissipation duct 41 and the second air outlet 15 of the second heat dissipation duct 11 are connected and communicated. Figure 1-Figure 15 In the figure, the position indicated by the lead line labeled “42 (15)” is both the first air inlet 42 and the second air outlet 15 .

[0120] In the embodiment of the present application, the specific position of the second air inlet 14 of the second heat dissipation duct 11 is selected according to actual conditions, and this embodiment does not limit this.

[0121] In order to facilitate the communication between the first air inlet 42 and the second air outlet 15, the first air inlet 42 can be selected to protrude from the protective cover assembly 4, and the cabinet 1 is provided with a first recessed portion, which accommodates the first air inlet 42. In this way, the first recessed portion and the protruding first air inlet 42 are mutually limited, thereby simplifying the installation of the protective cover assembly 4 and the cabinet 1, and facilitating the communication between the first air inlet 42 and the second air outlet 15.

[0122] In actual situations, the cabinet assembly may also be selected without the above-mentioned limit, and is not limited to the above-mentioned embodiments.

[0123] In the embodiment of the present application, the cabinet 1 has at least one second heat dissipation duct 11. There is at least one first air inlet 42 of the first heat dissipation duct 41, and the second heat dissipation duct 11 corresponds to at least one first air inlet 42. In order to simplify the structure, the second heat dissipation duct 11 and the first air inlet 42 can be selected to correspond one to one. In this case, the cabinet 1 can be selected to have one second heat dissipation duct 11, and any two first air inlets 42 are distributed in sequence along the distribution direction of any two cabinets 1. Of course, it can be selected that the first air inlet 42 of the first heat dissipation duct 41 is only one, and all the second heat dissipation ducts 11 are connected to the same first air inlet 42.

[0124] In the embodiment of the present application, there is at least one first air outlet 43 of the first heat dissipation duct 41. In order to improve the efficiency of exhausting the airflow to the external environment and improve the heat dissipation effect, the second heat dissipation duct 11 can be selected to correspond to at least one first air outlet 43. In order to simplify the structure, the second heat dissipation duct 11 and the first air outlet 43 can be selected to correspond one to one. In this case, the cabinet 1 can be selected to have one second heat dissipation duct 11, and any two first air outlets 43 are distributed in sequence along the distribution direction of any two cabinets 1.

[0125] When there are at least two cabinets 1, there are at least two second heat dissipation ducts 11, and at least two second heat dissipation ducts 11 can be selected to correspond to the same first air outlet 43. Based on this, only one first air outlet 43 of the first heat dissipation duct 41 can be selected, so that all airflow is discharged to the external environment through only one first air outlet 43.

[0126] In the embodiment of the present application, in order to improve the heat dissipation effect of the conductive member 3, the cabinet 1 and the protective cover assembly 4 can be sealed and connected at the connection point between the second heat dissipation duct 11 and the first heat dissipation duct 41. In this way, air leakage is avoided, thereby improving the heat dissipation effect of the conductive member 3. The sealing structure of the cabinet 1 and the protective cover assembly 4 is selected according to actual conditions, for example, sealing is achieved by sealing members such as sealant, sealing strips, and sealing rings, which is not limited in this embodiment.

[0127] For example, Figure 16-18 As shown, a first sealing member 7 is provided at the first air inlet 42 of the protective cover assembly 4, and the protective cover assembly 4 and the cabinet 1 are sealed and connected through the first sealing member 7, that is, the protective cover assembly 4 and the cabinet 1 are sealed and connected through the first sealing member 7 at the connection point between the second heat dissipation air duct 11 and the first heat dissipation air duct 41. Exemplarily, the first sealing member 7 is a sealing strip, and the protective cover assembly 4 and the cabinet 1 are compressed and sealed by the sealing strip.

[0128] In the embodiment of the present application, the cabinet output member 13 may be inside the second heat dissipation duct 11 or outside the second heat dissipation duct 11. Accordingly, the electrical connection between the cabinet output member 13 and the conductive member 3 may be inside the heat dissipation duct (the first heat dissipation duct 41 or the second heat dissipation duct 11) or outside the heat dissipation duct.

[0129] In the present application embodiment, Fig.16 and Fig.17 As shown, in order to improve the integration, the cabinet 1 and the protective cover assembly 4 can be selected to be integrated on the integrated platform 6. Of course, the cabinet 1 and the protective cover assembly 4 can also be selected to be arranged on different platforms respectively, and are not limited to the above structure.

[0130] In order to prevent the heat dissipation airflow from affecting the electrical connection and to improve the reliability and protection performance of the electrical connection, the cabinet output component 13 may be selected to be outside the second heat dissipation air duct 11. Figure 16-Figure 24 As shown, in some embodiments, the cabinet 1 is provided with a connecting cavity 12 , the connecting cavity 12 and the second heat dissipation duct 11 are relatively isolated, and the cabinet output component 13 is provided in the connecting cavity 12 .

[0131] like Fig.19 and Fig.21 As shown, the cabinet assembly further includes an air duct partition plate 2, which separates the connecting cavity 12 from the first heat dissipation air duct 41. In this way, the heat dissipation airflow is prevented from entering the connecting cavity 12.

[0132] The air duct baffle 2 can be understood as a part of the cabinet 1. In this case, the air duct baffle 2 and the protective cover assembly 4 are sealed and connected to ensure that the air duct baffle 2 isolates the connection cavity 12 and the first heat dissipation air duct 41. In some embodiments, the protective cover assembly 4 is provided with a second sealing member 8, and the air duct baffle 2 and the protective cover assembly 4 are sealed and connected through the second sealing member 8. Exemplarily, the second sealing member 8 is a sealing strip, and the protective cover assembly 4 and the air duct baffle 2 are compressed and sealed by the sealing strip.

[0133] In some other embodiments, the air duct partition plate 2 and the protective cover assembly 4 may also be sealed and connected in other ways, which are not limited to the above embodiments.

[0134] The air duct baffle 2 can also be understood as a part of the protective cover assembly 4. In this case, the air duct baffle 2 and the cabinet 1 are sealed to ensure that the air duct baffle 2 isolates the connecting cavity 12 and the first heat dissipation air duct 41. The sealing structure of the air duct baffle 2 and the cabinet can be selected according to actual conditions, and this embodiment does not limit this.

[0135] The air duct partition plate 2 has a mounting hole for the conductive member 3 to pass through, that is, the connecting cavity 12 has a connecting port 16 for the conductive member 3 to pass through. In this way, the cabinet output member 13 and the conductive member 3 are electrically connected in the connecting cavity 12. Of course, it is also possible to select that the air duct partition plate 2 has a mounting hole for the cabinet output member 13 to pass through, that is, the connecting cavity 12 has a connecting port 16 for the cabinet output member 13 to pass through. In this way, the cabinet output member 13 and the conductive member 3 are electrically connected in the first heat dissipation air duct 41.

[0136] In the embodiment of the present application, the protective cover assembly 4 is provided with an installation opening 44. When the air duct partition plate 2 has an installation hole for the conductive member 3 to pass through, the installation opening 44 is for the conductive member 3 to pass through; when the air duct partition plate 2 has an installation hole for the cabinet output member 13 to pass through, the installation opening 44 is for the cabinet output member 13 to pass through. The air duct partition plate 2 closes the installation opening 44.

[0137] like Fig.25 As shown, the installation opening 44 and the connecting opening (first air inlet 42) in the first heat dissipation duct 41 that is connected to the second heat dissipation duct 11 are sequentially distributed along a first direction, and the first direction is perpendicular to the vertical direction. When there are at least two cabinets 1, the first direction is the direction in which any two cabinets 1 are sequentially distributed.

[0138] The installation opening 44 protrudes from the protective cover assembly 4, and the cabinet 1 is provided with a second recessed portion, which accommodates the installation opening 44. In this way, the second recessed portion and the installation opening 44 are mutually limited, which facilitates the installation of the cabinet 1 and the protective cover assembly 4.

[0139] In the case where the cabinet 1 is provided with a first recessed portion, the first recessed portion and the second recessed portion may be selected to be the same recessed portion 17, such as Fig.23Of course, the first recessed portion and the second recessed portion may also be selected to be different recessed portions.

[0140] In the embodiment of the present application, when the first heat dissipation air duct 41 has a first air outlet 43 connected to the external environment, as shown in FIG. Fig.17 and Fig.26 As shown, the cabinet assembly further includes a protective net 5 disposed at the first air outlet 43, thereby preventing foreign matter from entering the first heat dissipation duct 41 from the first air outlet 43, thereby improving the protective performance of the entire cabinet assembly.

[0141] After the protective net 5 is used for a period of time, there are many foreign objects such as dust on the protective net 5, so the protective net 5 needs to be cleaned regularly. In order to facilitate the cleaning and replacement of the protective net 5, the protective net 5 and the protective cover assembly 4 are detachably connected. The specific method of detachably fixing the connection is selected according to the actual situation, for example, the detachably fixing connection is achieved by fasteners, a clamping structure, etc., and this embodiment does not limit this.

[0142] In order to facilitate maintenance of the protection net 5, the protection net 5 and the protection cover assembly 4 can be selected to be detachably plugged in.

[0143] The protective cover assembly 4 is provided with a guide rail 45, and the protective net 5 is slidably matched with the guide rail 45. In this way, it is convenient to install the protective net 5. It should be noted that the sliding matching direction of the guide rail 45 and the protective net 5 is the plugging direction of the protective net 5.

[0144] In order to improve the stability of the protective net 5, the protective net 5 is provided with a plug-in and pull-out stopper 55, the plug-in and pull-out direction of the plug-in and pull-out stopper 55 is perpendicular to the plug-in direction of the protective net 5, and the protective cover assembly 4 is provided with a limit hole, and the plug-in and pull-out stopper 55 is used to cooperate with the limit hole to limit the protective net 5. In this way, the protective net 5 and the protective cover assembly 4 are limited and matched, and the limit match is detachable.

[0145] The plug-in and pull-out limiting members 55 may be distributed around the protective net 5 , or may be distributed at the outer end of the protective net 5 in the plug-in direction.

[0146] The plug-in limiter 55 may be a spring pin or other structures, which is not limited in this embodiment.

[0147] The protective net 5 does not need to be installed with screws, which is convenient for maintenance, improves maintenance efficiency, and reduces the use of tools.

[0148] In actual situations, the protective net 5 can also be detachably connected to the protective cover assembly 4 through a fastener. Moreover, the above-mentioned plug-in limiter 55 and the fastener can be used together.

[0149] like Fig. 27As shown, in some embodiments, the protection net 5 includes: a protection net body 51, and a protection net frame 52 disposed on the periphery of the protection net body 51. The protection net frame 52 and the protective cover assembly 4 are detachably connected.

[0150] In order to facilitate the fixed connection between the protection net frame 52 and the protection cover assembly 4, the protection net frame 52 is provided with a connecting plate 53, and the connecting plate 53 and the protection cover assembly 4 are detachably connected.

[0151] The connecting plate 53 can be perpendicular to the protective net frame 52, parallel to the protective net frame 52, or inclined relative to the protective net frame 52. In order to fix the protective net 5, the connecting plate 53 can be selected to be perpendicular to the protective net frame 52, and the connecting plate 53 is detachably connected to the protective cover assembly 4 through fasteners.

[0152] It should be noted that the connecting plate 53 is provided with a connecting hole 54 for the fastener to pass through, and the protective cover assembly 4 is provided with a fixing hole for fixing the fastener.

[0153] When the protection net 5 and the protection cover assembly 4 are in limited cooperation, the plug-in limiting member 55 can be set on the protection net frame 52 .

[0154] Exemplarily, the first air outlet 43 is located on the bottom surface of the protective cover assembly 4, the plug-in direction of the protective net 5 is horizontal, the sliding fit direction of 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 are limited in the vertical direction; or, the first air outlet 43 is located on the side of the protective cover assembly 4, the plug-in direction of the protective net 5 is vertical, the guide rail 45 and the protective net 5 are slidingly fit in the vertical direction, and the limiting fit direction of the protective net frame 52 and the protective cover assembly 4 is perpendicular to the vertical direction.

[0155] In some embodiments, the cabinet assembly further includes a detector for detecting whether the protective net 5 needs dust removal.

[0156] 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) to detect whether the protective net 5 needs dust removal. In this case, the detector is arranged on the conductive member 3. In the case where the conductive member 3 includes a connecting section 31 and a converging section 32, the detector is arranged on the converging section 32. Of course, the detector may also be arranged on a portion of the connecting section 31 located in the first heat dissipation duct 41.

[0157] It should be noted that if it is detected that the temperature of the conductive member 3 exceeds the first set value, it is detected that the protective net 5 needs to be dusted; if it is detected that the temperature of the conductive member 3 does not exceed the first set value, it is detected that the protective net 5 does not need to be dusted.

[0158] The detector may also be a flow sensor, which is used to detect whether the flow at the first air outlet 43 is less than a second set value to detect whether the protective net 5 needs dust removal. The detector is inside the first heat dissipation duct 41 or outside the first heat dissipation duct 41.

[0159] It should be noted that if the flow rate at the first air outlet 43 is detected to be less than the second set value, it is detected that the protective net 5 needs dust removal; if the flow rate at the first air outlet 43 is detected to be not less than the second set value, it is detected that the protective net 5 does not need dust removal.

[0160] The detector may be a pressure detector, and the pressure sensor is used to detect whether the pressure at the first air outlet 43 exceeds the third set value to detect whether the protective net 5 needs to be dusted. The detector is inside the first heat dissipation duct 41 or outside the first heat dissipation duct 41. It should be noted that if it is detected that the pressure at the first air outlet 43 exceeds the third set value, it is detected that the protective net 5 needs to be dusted; if it is detected that the pressure at the first air outlet 43 does not exceed the third set value, it is detected that the protective net 5 does not need to be dusted.

[0161] In order to remind the user to clean the protective net 5, the cabinet assembly also includes an alarm connected to the detector signal. When the detector detects that the protective net 5 needs to be dusted, the alarm sounds an alarm. The alarm can be a sound alarm, a light alarm, or other types of alarms.

[0162] Based on the cabinet assembly provided in the above embodiment, the embodiment of the present application also provides a photovoltaic power station, such as Fig.28 As shown, the photovoltaic power station includes: a voltage conversion device 9, and a cabinet assembly as described in the above embodiment; wherein the conductive member 3 is electrically connected to the input end of the voltage conversion device 9.

[0163] The cabinet may be an inverter, and the voltage conversion device 9 may be a medium voltage conversion device, such as a transformer.

[0164] Since the cabinet assembly provided in the above embodiment has the above technical effects, and the above photovoltaic power station includes the above cabinet assembly, the above photovoltaic power station also has corresponding technical effects, which will not be described in detail herein.

[0165] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. 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 application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cabinet assembly, characterized in that: include: At least one cabinet (1), a conductive member (3), and a protective cover assembly (4); The conductive member (3) is electrically connected to a cabinet output member (13) of the cabinet (1), and the conductive member (3) is arranged in the protective cover assembly (4); The protective cover assembly (4) is provided with a first heat dissipation duct (41), the cabinet (1) is provided with a second heat dissipation duct (11), and the first heat dissipation duct (41) is connected to the second heat dissipation duct (11) of at least one of the cabinets (1) to dissipate heat for the conductive member (3).

2. The cabinet assembly according to claim 1, characterized in that: The second air inlet (14) of the second heat dissipation air duct (11) is connected to the external environment, the second air outlet (15) of the second heat dissipation air duct (11) is connected to the first air inlet (42) of the first heat dissipation air duct (41), and the first air outlet (43) of the first heat dissipation air duct (41) is connected to the external environment.

3. The cabinet assembly according to claim 2, characterized in that: The second heat dissipation duct (11) and the first heat dissipation duct (41) are connected in series.

4. The cabinet assembly according to claim 2, characterized in that: The protective cover assembly (4) is located at the bottom end of the cabinet (1), the second air outlet (15) is located at the bottom end of the cabinet (1), and the first air inlet (42) is located at the top end of the protective cover assembly (4).

5. The cabinet assembly according to claim 2, characterized in that: The protective cover assembly (4) is located on a side of the cabinet (1), the second air outlet (15) is located on a side of the cabinet (1) close to the protective cover assembly (4), and the first air inlet (42) is located on a side of the protective cover assembly (4) close to the cabinet (1).

6. The cabinet assembly according to claim 2, characterized in that: The first air outlet (43) is located on the bottom surface or side surface of the protective cover assembly (4).

7. The cabinet assembly according to claim 2, characterized in that: The protective cover assembly (4) is located at the bottom end of the cabinet (1), the second air outlet (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 air outlet (43) is located at the bottom surface or side surface of the protective cover assembly (4).

8. The cabinet assembly according to claim 2, characterized in that: The protective cover assembly (4) is located on a side of the cabinet (1), the second air outlet (15) is located on a side of the cabinet (1) close to the protective cover assembly (4), the first air inlet (42) is located on a side of the protective cover assembly (4) close to the cabinet (1), and the first air outlet (43) is located on the bottom surface or side surface of the protective cover assembly (4).

9. The cabinet assembly according to claim 2, characterized in that: The first air inlet (42) protrudes from the protective cover assembly (4), and the cabinet (1) is provided with a first recessed portion, which accommodates the first air inlet (42).

10. The cabinet assembly according to claim 2, characterized in that: There is at least one first air inlet (42), and the second heat dissipation duct (11) corresponds to at least one of the first air inlet (42); And / or, there is at least one first air outlet (43), and the second heat dissipation duct (11) corresponds to at least one of the first air outlets (43).

11. The cabinet assembly according to claim 2, characterized in that: There are at least two cabinets (1), there are at least two second heat dissipation air ducts (11), and at least two of the second heat dissipation air ducts (11) correspond to the same first air outlet (43).

12. The cabinet assembly according to claim 1, characterized in that: There are at least two cabinets (1), which are distributed in sequence along a first direction, and the first direction is perpendicular to the vertical direction.

13. The cabinet assembly according to claim 1, characterized in that: The cabinet (1) and the protective cover assembly (4) are sealed and connected at the connection point between the second heat dissipation air duct (11) and the first heat dissipation air duct (41).

14. The cabinet assembly according to claim 1, characterized in that: The cabinet (1) is provided with a connecting cavity (12), the connecting cavity (12) and the second heat dissipation air duct (11) are relatively isolated, and the cabinet output component (13) is arranged in the connecting cavity (12); The cabinet assembly further comprises an air duct partition plate (2), the air duct partition plate (2) isolating the connection cavity (12) and the first heat dissipation air duct (41), and the air duct partition plate (2) has a mounting hole for the conductive member (3) or the cabinet output member (13) to pass through.

15. The cabinet assembly according to claim 14, characterized in that: The air duct partition plate (2) and the protective cover assembly (4) are sealed and connected to isolate the connecting cavity (12) and the first heat dissipation air duct (41).

16. The cabinet assembly according to claim 14, characterized in that: The protective cover assembly (4) is provided with an installation opening (44), the installation opening (44) is for the conductive member (3) or the cabinet output member (13) to pass through, and the air duct partition plate (2) closes the installation opening (44); Wherein, the installation opening (44) and the communication opening in the first heat dissipation air duct (41) that is connected to the second heat dissipation air duct (11) are distributed in sequence along a first direction, and the first direction is perpendicular to the vertical direction; And / or, the installation opening (44) protrudes from the protection cover assembly (4), and the cabinet (1) is provided with a second recessed portion, and the second recessed portion accommodates the installation opening (44).

17. The cabinet assembly according to any one of claims 1 to 16, characterized in that: The first heat dissipation air duct (41) has a first air outlet (43) communicating with the external environment, and the cabinet assembly further comprises a protective net (5) arranged at the first air outlet (43).

18. The cabinet assembly according to claim 17, characterized in that: The protective net (5) and the protective cover assembly (4) are detachably plugged in.

19. The cabinet assembly according to claim 18, characterized in that: The protective cover assembly (4) is provided with a guide rail (45), and the protective net (5) and the guide rail (45) are slidably matched; And / or, the protective net (5) is provided with a pluggable and unpluggable plugging and unplugging limiting member (55), the plugging and unplugging direction of the plugging and unplugging limiting member (55) is perpendicular to the plugging and plugging direction of the protective net (5), the protective cover assembly (4) is provided with a limiting hole, and the plugging and unplugging limiting member (55) is used to cooperate with the limiting hole to limit the protective net (5); And / or, the protective net (5) is detachably connected to the protective cover assembly (4) via a fastener.

20. The cabinet assembly according to claim 17, characterized in that: It also comprises a detector, which is used to detect whether the protective net (5) needs dust removal.

21. The cabinet assembly according to claim 20, characterized in that: The detector is arranged on the conductive member (3), and is used to detect whether the temperature inside the conductive member (3) exceeds a set value so as to detect whether the protective net (5) needs dust removal; And / or, the cabinet assembly further comprises an alarm connected to the detector signal.

22. A photovoltaic power station, characterized in that: include: A voltage conversion device (9), and a cabinet assembly according to any one of claims 1 to 21; wherein the conductive member (3) is electrically connected to an input terminal of the voltage conversion device (9).

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