Electrical cabinet and photovoltaic power generation system

Abstract

The utility model discloses an electrical cabinet and a photovoltaic power generation system. The electrical cabinet comprises a cabinet body and a heat exchanger. Wherein the cabinet body is provided with a first switch area and a second switch area, the first switch area and the second switch area are distributed on the two adjacent sides of the cabinet body, switches distributed in the first direction are arranged in the first switch area, switches distributed in the second direction are arranged in the second switch area, and the first direction is perpendicular to the second direction; the first switch area and the second switch area are both located in the heat dissipation air channel of the cabinet body and are distributed along the airflow direction in the heat dissipation air channel; and the heat exchanger can exchange heat with the heat dissipation air duct. According to the electrical cabinet, the heat dissipation air duct is simplified, and the heat dissipation effect is improved, so that the heat dissipation capability of the electrical cabinet is improved.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic power generation, and more specifically, to an electrical cabinet and a photovoltaic power generation system. Background Art

[0002] In photovoltaic power generation systems, electrical cabinets are used as mid-terminal equipment between inverters and transformers. Electrical cabinets mainly include switches and circuit breakers, where switches are connected to the AC output terminals of inverters and then connected to circuit breakers to achieve low-voltage AC convergence.

[0003] As the demand for inverters increases, the requirements for the structural design of electrical cabinets are getting higher and higher. The heat dissipation capacity and maintainability of existing electrical cabinets are difficult to meet the requirements, and it is also difficult to meet the needs of different power levels. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide an electrical cabinet and a photovoltaic power generation system to improve the heat dissipation capacity of the electrical cabinet.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] An electrical cabinet comprises: a cabinet body and a heat exchanger;

[0007] The cabinet is provided with a first switch area and a second switch area, the first switch area and the second switch area are distributed on two adjacent sides of the cabinet, the first switch area is provided with switches distributed along a first direction, the second switch area is provided with switches distributed along a second direction, and the first direction is perpendicular to the second direction;

[0008] The first switch area and the second switch area are both located in the heat dissipation air duct of the cabinet and are distributed along the air flow direction in the heat dissipation air duct; the heat exchanger can perform heat exchange with the heat dissipation air duct.

[0009] Optionally, the switches in the first switch area and the switches in the second switch area are distributed in an L shape.

[0010] Optionally, the airflow in the heat dissipation duct flows through the first switch area along the second direction, and the airflow in the heat dissipation duct flows through the second switch area along the first direction.

[0011] Optionally, the heat exchanger comprises a first heat exchange channel and a second heat exchange channel capable of performing heat exchange, and the heat dissipation air channel and the second heat exchange channel are connected end to end to form an internal circulation air channel;

[0012] Wherein, the heat dissipation air duct includes: a first heat dissipation air duct, a second heat dissipation air duct, a third heat dissipation air duct and a fourth heat dissipation air duct;

[0013] The first heat dissipation air duct, the second heat dissipation air duct, the third heat dissipation air duct, the fourth heat dissipation air duct and the second heat exchange channel are connected end to end in sequence, or the third heat dissipation air duct, the second heat dissipation air duct, the first heat dissipation air duct, the fourth heat dissipation air duct and the second heat exchange channel are connected end to end in sequence;

[0014] The first switch area is located in the first heat dissipation duct, and the first heat dissipation duct is arranged along the second direction; the second switch area is located in the third heat dissipation duct, and the third heat dissipation duct is arranged along the first direction.

[0015] Optionally, the electrical cabinet further includes a first fan, the first fan being used to drive airflow from the first switch area to the second switch area, or from the second switch area to the first switch area;

[0016] And / or, the heat exchanger further includes a second fan, and the second fan is used to drive the airflow from the fourth heat dissipation air duct to the second heat exchange channel, or from the second heat exchange channel to the fourth heat dissipation air duct.

[0017] Optionally, the first fan is arranged in the second heat dissipation duct.

[0018] Optionally, the fourth heat dissipation air duct includes: a heat dissipation air duct section 1 and a heat dissipation air duct section 2 connected to the heat dissipation air duct section 1;

[0019] The first heat dissipation air duct and the second heat exchange channel are arranged side by side, and the second heat dissipation air duct and the second heat dissipation air duct are arranged side by side.

[0020] Optionally, the electrical cabinet further includes a third fan, and the third fan is used to drive the air flow from the first section of the heat dissipation air duct to the second section of the heat dissipation air duct, or from the second section of the heat dissipation air duct to the first section of the heat dissipation air duct.

[0021] Optionally, the switches in the first switch area and the switches in the second switch area are distributed in a T shape.

[0022] Optionally, the airflow in the heat dissipation duct flows through the first switch area and the second switch area along the second direction.

[0023] Optionally, the heat exchanger comprises a first heat exchange channel and a second heat exchange channel capable of performing heat exchange, and the heat dissipation air channel and the second heat exchange channel are connected end to end to form an internal circulation air channel;

[0024] Wherein, the heat dissipation air duct includes: a sixth heat dissipation air duct, a seventh heat dissipation air duct and an eighth heat dissipation air duct;

[0025] The sixth heat dissipation air duct, the seventh heat dissipation air duct, the eighth heat dissipation air duct and the second heat exchange channel are connected end to end in sequence;

[0026] The first switch area and the second switch area are both located in the sixth heat dissipation air duct, the sixth heat dissipation air duct and the eighth heat dissipation air duct are both arranged along the second direction and distributed side by side, and the seventh heat dissipation air duct and the second heat exchange channel are distributed side by side.

[0027] Optionally, the electrical cabinet further includes a fourth fan, and the fourth fan is used to drive the airflow from the sixth heat dissipation air duct to the seventh heat dissipation air duct, or from the seventh heat dissipation air duct to the sixth heat dissipation air duct;

[0028] And / or, the electrical cabinet further includes a fifth fan, the fifth fan being used to drive air flow from the seventh heat dissipation air duct to the eighth heat dissipation air duct, or from the eighth heat dissipation air duct to the seventh heat dissipation air duct;

[0029] And / or, the heat exchanger further includes a second fan, and the second fan is used to drive the air flow from the seventh heat dissipation air duct to the eighth heat dissipation air duct, or from the eighth heat dissipation air duct to the seventh heat dissipation air duct.

[0030] Optionally, the heat exchanger includes a first heat exchange channel and a second heat exchange channel capable of performing heat exchange, wherein the heat dissipation air duct and the second heat exchange channel are connected end to end to form an internal circulation air duct.

[0031] Optionally, the heat dissipation inlet and outlet of the heat dissipation duct, and the heat exchanger are distributed on the same side of the cabinet;

[0032] And / or, the heat dissipation inlet of the heat dissipation duct faces the first switch area or the second switch area;

[0033] And / or, a first cabinet door is provided on the side of the cabinet having the first switch area, and a second cabinet door is provided on the side of the cabinet having the second switch area; wherein the heat exchanger is provided on the first cabinet door or the second cabinet door;

[0034] And / or, the inlet and outlet of the first heat exchange channel are both connected to the external environment of the cabinet; the heat exchanger also includes a sixth fan, and the sixth fan is used to drive the air of the external environment to flow through the first heat exchange channel.

[0035] Optionally, the cabinet is further provided with a circuit breaker area and a power distribution area, the circuit breaker area and the first switch area are located on the same side of the cabinet, the power distribution area and the second switch area are located on the same side of the cabinet, and the circuit breaker area and the power distribution area are both located in the heat dissipation duct;

[0036] And / or, the cabinet is also provided with a first wiring area and a second wiring area; the first wiring area and the first switch area are located on the same side of the cabinet, and the first wiring area and the first switch area are adjacent to each other; the second wiring area and the second switch area are located on the same side of the cabinet, and the second wiring area and the second switch area are adjacent to each other.

[0037] Optionally, the first switch area, the second switch area, the power distribution area and the circuit breaker area are distributed in sequence along the airflow direction, or the circuit breaker area, the power distribution area, the second switch area and the first switch area are distributed in sequence along the airflow direction.

[0038] Optionally, when a first cabinet door is disposed on a side of the cabinet having the first switch area, and a second cabinet door is disposed on a side of the cabinet having the second switch area, a tray is disposed in the cabinet, and the tray is located on an inner side of at least one of the first cabinet door and the second cabinet door;

[0039] Wherein, the tray is used to install the first device; when the cabinet door corresponding to the tray is in an open state, the first device is exposed outside the cabinet so that the first device can be maintained;

[0040] And / or, a second device is provided in the cabinet, the second device is located on the inner side of the tray, and the tray is movably provided in the cabinet; when the cabinet door corresponding to the tray is opened and the tray is moved to a set position, the second device is exposed from the cabinet so that the second device can be maintained.

[0041] Optionally, the tray is rotatably disposed in the cabinet;

[0042] And / or, the second device includes a third fan or a fifth fan, the third fan is used to drive the air flow in the heat dissipation duct, and the fifth fan is used to drive the air flow in the heat dissipation duct.

[0043] Based on the electrical cabinet provided above, the present application also provides a photovoltaic power generation system, which includes the electrical cabinet described in any one of the above items.

[0044] The heat dissipation principle of the electrical cabinet provided in the present application is: since the first switch area and the second switch area are both located in the heat dissipation duct of the cabinet and are distributed along the air flow direction in the heat dissipation duct, the air flow in the heat dissipation duct will flow through the switches in the first switch area and the second switch area, thereby achieving heat dissipation of the switches; the heat exchanger can perform heat exchange with the heat dissipation duct, so that the heat exchanger cools the air flow flowing through the heat dissipation duct, thereby ensuring the heat dissipation effect of the switch.

[0045] In the electrical cabinet provided by the present application, since the first switch area and the second switch area are distributed on adjacent two sides of the cabinet body, and switches distributed along the first direction are arranged in the first switch area, and switches distributed along the second direction are arranged in the second switch area, the first direction is perpendicular to the second direction. This regularizes the distribution of switches in the first switch area and the second switch area, thereby facilitating the heat dissipation airflow to flow through the first switch area and the second switch area successively, or the heat dissipation airflow to flow through the second switch area and the first switch area successively. Compared with the prior art, the heat dissipation duct is simplified and the heat dissipation effect is improved, thereby improving the heat dissipation capacity of the electrical cabinet, which is convenient for meeting the situation with higher demand for heat dissipation capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] 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.

[0047] Figure 1 An axonometric diagram of a structure of an electrical cabinet provided in an embodiment of the present application;

[0048] Figure 2 for Figure 1 An axonometric view of the electrical cabinet shown with the first cabinet door opened;

[0049] Figure 3 for Figure 1 The schematic diagram of the internal structure of the electrical cabinet shown on the first side;

[0050] Figure 4 for Figure 1 A schematic diagram of the internal structure of the electrical cabinet shown on the second side;

[0051] Figure 5 for Figure 1 The schematic diagram of the internal structure and heat dissipation of the electrical cabinet shown;

[0052] Figure 6 for Figure 1 The heat dissipation diagram of the electrical cabinet shown;

[0053] Figure 7 for Figure 1 A schematic diagram of heat dissipation of the electrical cabinet shown on the first side;

[0054] Figure 8 for Figure 1 The heat dissipation diagram of the electrical cabinet shown on the second side;

[0055] Fig. 9 Another structural schematic diagram of an electrical cabinet provided in an embodiment of the present application;

[0056] Fig.10 for Fig. 9 A top view of the electrical cabinet shown;

[0057] Fig.11 for Figure 8 The heat dissipation diagram of the electrical cabinet shown;

[0058] Fig.12 for Figure 8 Another heat dissipation schematic diagram of the electrical cabinet shown;

[0059] Fig.13 Another structural schematic diagram of an electrical cabinet provided in an embodiment of the present application.

[0060] Description of reference numerals:

[0061] 1 is a cabinet, 11 is a first cabinet door, 12 is a second cabinet door, 13 is a first side, 14 is a second side, 15 is a circuit breaker area, 16 is a first switch area, 17 is a first wiring area, 18 is a power distribution area, 19 is a second switch area, 110 is a second wiring area, 1a is a first cooling air duct, 1b is a second cooling air duct, 1c is a third cooling air duct, 1d is a fourth cooling air duct, 11d is a first cooling air duct, 12d is a second cooling air duct, 1f is The sixth heat dissipation air duct, 1g is the seventh heat dissipation air duct, 1h is the eighth heat dissipation air duct, 2 is a heat exchanger, 21 is an external air inlet, 22 is an external air outlet, 23 is an internal air inlet, 24 is an internal air outlet, 2a is a first heat exchange channel, 2b is a second heat exchange channel, 3 is a switch, 31 is a load switch, 32 is a fuse, 4 is a first fan, 5 is a third fan, 6 is a second fan, 7 is a fourth fan, 8 is a fifth fan, 9 is a sixth fan, and 10 is a tray. DETAILED DESCRIPTION

[0062] 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.

[0063] The technical solutions in the embodiments of the present application will be described clearly and completely 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 used as limitations on the present application. As used in the specification and the appended claims of the present application, the singular expressions "one", "a kind", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication 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; "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0064] 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.

[0065] 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.

[0066] The "parallel" and "perpendicular" involved in this application are "substantially parallel" and "substantially perpendicular" in actual operation. "Substantially parallel" can be understood as parallel with a certain error, and similarly, "substantially perpendicular" can be understood as perpendicular with a certain error.

[0067] The arrows used to indicate the airflow direction in the drawings of the present application are merely schematic and only indicate the approximate flow direction, not the only airflow direction.

[0068] The electrical cabinet mentioned in this application may be an AC electrical cabinet, such as a photovoltaic grid-connected low-voltage junction cabinet, a low-voltage junction cabinet, etc. The electrical cabinet may be an important component for connecting the inverter output and the AC distribution cabinet or the step-up transformer input. It may collect the AC power output by multiple inverters and then output it, greatly simplifying the connection line between the inverter and the AC distribution cabinet or the step-up transformer. At the same time, the access of the electrical cabinet, as the output disconnection point of the inverter, may also protect the inverter from the harm from the AC power grid, improve the safety of the system, and protect the safety of the installation and maintenance personnel.

[0069] The embodiment of the present application provides an electrical cabinet, simplifies the heat dissipation duct, improves the heat dissipation effect, and thus improves the heat dissipation capacity of the electrical cabinet, which is convenient for meeting the situation with higher demand for heat dissipation capacity.

[0070] like Figure 1 and Figure 2 As shown, the electrical cabinet provided in the embodiment of the present application includes: a cabinet body 1 and a heat exchanger 2.

[0071] Combination Figure 2-Figure 4 As shown, the cabinet 1 is provided with a first switch area 16 and a second switch area 19, and the first switch area 16 and the second switch area 19 are distributed on two adjacent sides of the cabinet 1. Exemplarily, the first side 13 and the second side 14 of the cabinet 1 are adjacent. The first switch area 16 is located on the first side 13 of the cabinet 1, and the second switch area 19 is located on the second side 14 of the cabinet 1. Exemplarily, the first side 13 is the front side of the cabinet 1, and the second side 14 is the left side or the right side of the cabinet 1.

[0072] The first switch area 16 is provided with switches 3 distributed along a first direction, and the second switch area 19 is provided with switches 3 distributed along a second direction, wherein the first direction and the second direction are perpendicular. To facilitate the arrangement and operation of the switches 3, the first direction and the second direction can be selected to be perpendicular to the vertical direction.

[0073] In order to facilitate the arrangement of switches 3, in the first switch area 16, switches 3 are arranged in rows along the first direction, and switches 3 are at least in one row. When switches 3 are at least in two rows, any two rows of switches 3 are arranged in sequence along the second direction. Correspondingly, in the second switch area 19, switches 3 are arranged in rows along the second direction, and switches 3 are at least in one row. When switches 3 are at least in two rows, any two rows of switches 3 are arranged in sequence along the first direction.

[0074] It should be noted that there may be one or more switches 3 in the first switch area 16, and there may be one or more switches 3 in the second switch area 19. The number of rows of switches 3 in the first switch area 16 and the number of rows of switches 3 in the second switch area 19 may be the same or different.

[0075] In actual situations, the first direction may be selected as the length direction of the cabinet 1 , and the second direction may be selected as the width direction of the cabinet 1 ; or, the first direction may be selected as the width direction of the cabinet 1 , and the second direction may be selected as the length direction of the cabinet 1 .

[0076] like Figure 3 As shown, the switch 3 includes a load switch 31 and a fuse 32, wherein one end of the fuse 32 is used to be electrically connected to the AC output side of the inverter, and the other end of the fuse 32 is electrically connected to the load switch 31. Of course, the switch 3 can be selected to have other structures, which is not limited in this embodiment.

[0077] In the embodiment of the present application, the first switch area 16 and the second switch area 19 are both located in the heat dissipation duct of the cabinet 1 and are distributed along the air flow direction in the heat dissipation duct.

[0078] Exemplarily, the first switch area 16 and the second switch area 19 are distributed in sequence along the air flow direction in the heat dissipation air duct, that is, the cold air flow first flows through the first switch area 16 and then flows through the second switch area 19; or, the second switch area 19 and the first switch area 16 are distributed in sequence along the air flow direction in the heat dissipation air duct, that is, the cold air flow first flows through the second switch area 19 and then flows through the first switch area 16.

[0079] In the embodiment of the present application, the heat exchanger 2 can perform heat exchange with the heat dissipation duct. Exemplarily, the heat exchanger 2 is connected to the heat dissipation duct and is used to cool the airflow flowing through the heat dissipation duct. The specific type of the heat exchanger 2 is selected according to actual conditions, and this embodiment does not limit this. The specific type of the heat exchanger 2 is selected according to actual conditions, and this embodiment does not limit this.

[0080] The heat dissipation principle of the electrical cabinet provided in the above embodiment is: since the first switch area 16 and the second switch area 19 are both located in the heat dissipation duct of the cabinet body 1 and are distributed along the air flow direction in the heat dissipation duct, the air flow in the heat dissipation duct will flow through the switch 3 in the first switch area 16 and the second switch area 19, thereby achieving heat dissipation of the switch 3; the heat exchanger 2 cools the air flow flowing through the heat dissipation duct, thereby ensuring the heat dissipation effect of the switch 3.

[0081] The above heat dissipation method abandons the direct ventilation heat dissipation design and adopts the heat exchange heat dissipation form, which improves the IP level of the electrical cabinet.

[0082] In the electrical cabinet provided by the above embodiment, since the first switch area 16 and the second switch area 19 are distributed on adjacent two sides of the cabinet body 1, and the first switch area 16 is provided with switches 3 distributed along the first direction, and the second switch area 19 is provided with switches 3 distributed along the second direction, the first direction is perpendicular to the second direction. In this way, the distribution of the switches 3 in the first switch area 16 and the second switch area 19 is regularized, so as to facilitate ensuring that the airflow in the heat dissipation duct flows through the first switch area 16 and the second switch area 19 successively, or the airflow in the heat dissipation duct flows through the second switch area 19 and the first switch area 16 successively. Compared with the prior art, the heat dissipation duct is simplified and the heat dissipation effect is improved, thereby improving the heat dissipation capacity of the electrical cabinet, which is convenient for meeting the situation with higher demand for heat dissipation capacity.

[0083] like Figure 1 and Figure 2 As shown, in order to facilitate maintenance of the switch 3, the first side 13 of the cabinet 1 is provided with a first cabinet door 11, and the second side of the cabinet 1 is provided with a second cabinet door 12. It can be understood that: the first cabinet door 11 is provided on the side of the cabinet 1 having the first switch area 16, and the second cabinet door 12 is provided on the side of the cabinet 1 having the second switch area 19.

[0084] The first cabinet door 11 and the second cabinet door 12 can both open and close the cabinet body 1. In this way, the switches 3 in the first switch area 16 can be maintained by opening the first cabinet door 11, and the switches 3 in the second switch area 19 can be maintained by opening the second cabinet door 12, thus increasing the maintainable operation surface of the electrical cabinet and effectively improving the maintainability of the electrical cabinet.

[0085] As mentioned above, the first switch area 16 is provided with switches 3 arranged in a row along a first direction, and the second switch area 19 is provided with switches 3 arranged in a row along a second direction, and the first direction is perpendicular to the second direction. In this way, it is convenient to increase or decrease the number of switches 3, and the number of input paths of the switches 3 can be increased or decreased by increasing or decreasing the number of switches 3, so that different whole machine powers can be achieved, which is convenient for meeting the needs of different power levels; it can also improve the power density of the whole machine and shorten the later maintenance time.

[0086] In order to facilitate opening and closing of the cabinet 1, the first cabinet door 11 and the second cabinet door 12 can be rotatably arranged on the cabinet 1. Exemplarily, the first cabinet door 11 and the second cabinet door 12 are rotatably arranged on the cabinet 1 through hinges.

[0087] In the embodiment of the present application, the cabinet body 1 may also be provided with other cabinet doors, for example, cabinet doors may be provided on sides other than the first side 13 and the second side 14. The manner of opening and closing the cabinet doors is selected according to actual conditions, and this embodiment does not limit this.

[0088] like Figure 8As shown, in some embodiments, the heat exchanger 2 includes a first heat exchange channel 2a and a second heat exchange channel 2b, the first heat exchange channel 2a is used to cool the second heat exchange channel 2b, the second heat exchange channel 2b and the heat dissipation air duct are connected end to end to form an internal circulation air duct, and the first heat exchange channel 2a is used to cool the second heat exchange channel 2b.

[0089] The first heat exchange channel 2a can flow through gas or liquid, which can be selected according to actual conditions. In order to reduce the heat dissipation cost, the first heat exchange channel 2a can be selected to be connected to the external environment of the gas cabinet, that is, the inlet and outlet of the first heat exchange channel 2a are both connected to the external environment of the cabinet 1. In this case, the heat exchanger 2 is an air-to-air heat exchanger. Figure 8 As shown, in order to improve the heat exchange efficiency, the airflow directions in the first heat exchange channel 2a and the second heat exchange channel 2b can be selected to be opposite.

[0090] Exemplary, combined Figure 1 and Figure 2 As shown, the heat exchanger 2 is provided with an external air inlet 21 , an external air outlet 22 , an internal air inlet 23 and an internal air outlet 24 . Figure 2 In FIG. 2 , the vertical straight arrow indicates the direction of the airflow through the second heat exchange channel 2 b. Figure 2 Another straight arrow in FIG. 1 represents the direction in which the airflow flows through the first switch area 16 .

[0091] The outer air inlet 21 and the outer air outlet 22 are both connected to the first heat exchange channel 2a, and the inner air inlet 23 and the inner air outlet 24 are both connected to the second heat exchange channel 2b; the air from the external environment enters the first heat exchange channel 2a through the outer air inlet 21, and is then discharged to the external environment through the outer air outlet 22; the air in the heat dissipation duct enters the second heat exchange channel 2b through the inner air inlet 23, and then enters the heat dissipation duct through the inner air outlet 24.

[0092] In some other embodiments, the heat exchanger 2 may be selected to have other structures, which is not limited in the embodiments of the present application.

[0093] like Figure 8 As shown, in order to improve the heat dissipation efficiency, the heat exchanger 2 further includes a sixth fan 9, which is used to drive the air of the external environment to flow through the first heat exchange channel 2a.

[0094] In order to facilitate the formation of the inner circulation air duct, the heat dissipation inlet and outlet of the heat dissipation air duct and the heat exchanger 2 can be selected to be distributed on the same side of the cabinet 1. In this way, the structure of the heat exchanger 2 is simplified, and the installation of the heat exchanger 2 is also simplified. In this case, the inlet and outlet of the first heat exchange channel 2a can be selected to be connected to the external environment of the cabinet 1, and the heat exchanger 2 also includes a sixth fan 9, which is used to drive the air of the external environment to flow through the first heat exchange channel 2a. In this way, it is convenient to form the inner circulation air duct while also facilitating the cooling of the airflow in the inner circulation air duct. Of course, the inlet and outlet of the first heat exchange channel 2a can be selected to be connected to others, and are not limited to the above situation.

[0095] In the electrical cabinet, the switch 3 generates a large amount of heat and is heat sensitive. In order to improve the heat dissipation effect of the switch 3, the heat dissipation inlet of the heat dissipation duct can be selected to face the first switch area 16 or the second switch area 19. In this case, the type of the heat exchanger 2 is not limited. For example, the inlet and outlet of the first heat exchange channel 2a can be selected to be connected to the external environment of the cabinet 1. The heat exchanger 2 also includes a sixth fan 9, which is used to drive the air of the external environment to flow through the first heat exchange channel 2a. In this way, while improving the heat dissipation effect of the switch 3, it is also convenient to cool the airflow in the internal circulation duct.

[0096] It should be noted that when the heat dissipation inlet is distributed on the first side 13 , the heat dissipation inlet faces the first switch area 16 ; when the heat dissipation inlet is distributed on the second side 14 , the heat dissipation inlet faces the second switch area 19 .

[0097] The fuse 32 in the switch 3 generates a large amount of heat and has a strong thermal sensitivity. To improve the heat dissipation effect, the heat dissipation inlet of the heat dissipation duct may be selected to face the fuse 32 in the first switch area 16 or the fuse 32 in the second switch area 19. In actual situations, the heat dissipation inlet of the heat dissipation duct may also be selected to face other components, which is not limited in this embodiment.

[0098] In some embodiments, the heat dissipation inlet and outlet of the heat dissipation duct and the heat exchanger 2 can be selected to be distributed on the same side of the cabinet 1, and the heat dissipation inlet of the heat dissipation duct faces the first switch area 16 or the second switch area 19. In this way, the heat dissipation effect of the switch 3 is improved while facilitating the formation of the internal circulation duct.

[0099] As mentioned above, the cabinet 1 is provided with a first cabinet door 11 and a second cabinet door 12. In order to facilitate the installation of the heat exchanger 2, the heat exchanger 2 can be selected to be set on the first cabinet door 11 or the second cabinet door 12. In this case, there is no limitation on the type of the heat exchanger 2. For example, the inlet and outlet of the first heat exchange channel 2a can be selected to be connected to the external environment of the cabinet 1, and the heat exchanger 2 also includes a sixth fan 9, which is used to drive the air of the external environment to flow through the first heat exchange channel 2a. In this way, it is convenient to install the heat exchanger 2 while also facilitating the cooling of the air flow in the internal circulation duct.

[0100] When the heat dissipation inlet and heat dissipation outlet of the heat dissipation duct and the heat exchanger 2 are distributed on the same side of the cabinet 1, the heat dissipation inlet and heat dissipation outlet of the heat dissipation duct and the heat exchanger 2 can be selected to be arranged on the first cabinet door 11, or the heat dissipation inlet and heat dissipation outlet of the heat dissipation duct and the heat exchanger 2 can be arranged on the second cabinet door 12.

[0101] When the heat dissipation inlet of the heat dissipation duct faces the first switch area 16 or the second switch area 19, the heat exchanger 2 can be selected to be set on the first cabinet door 11, so that the heat dissipation inlet of the heat dissipation duct faces the first switch area 16, thereby improving the heat dissipation effect of the switch 3; the heat exchanger 2 can also be selected to be set on the second cabinet door 12, so that the heat dissipation inlet of the heat dissipation duct faces the second switch area 19, thereby improving the heat dissipation effect of the switch 3.

[0102] In the case where the heat inlet and outlet of the heat dissipation duct and the heat exchanger 2 are distributed on the same side of the cabinet 1, and the heat inlet of the heat dissipation duct faces the first switch area 16 or the second switch area 19: the heat inlet and outlet of the heat dissipation duct and the heat exchanger 2 can be selected to be arranged on the first cabinet door 11, and the heat inlet of the heat dissipation duct faces the first switch area 16; the heat inlet and outlet of the heat dissipation duct and the heat exchanger 2 can also be selected to be arranged on the second cabinet door 12, and the heat inlet of the heat dissipation duct faces the second switch area 19. In this way, while facilitating the installation of the heat exchanger 2, it is also convenient to improve the heat dissipation effect of the switch 3.

[0103] like Figure 3-Figure 5 As shown, in some embodiments, the switches 3 in the first switch area 16 and the switches 3 in the second switch area 19 can be selected to be distributed in an L shape. Based on this, it can be selected that in the cross section of the cabinet 1, the first switch area 16 and the second switch area 19 are distributed in an L shape, and the cross section is perpendicular to the vertical direction.

[0104] In the above embodiment, the airflow in the heat dissipation duct flows through the first switch area 16 along the second direction, and the airflow in the heat dissipation duct flows through the second switch area 19 along the first direction. In this way, it is convenient for the airflow to flow evenly through each switch 3 in the first switch area 16, and it is also convenient for the airflow to flow evenly through each switch 3 in the second switch area 19, thereby improving the heat dissipation uniformity of the first switch area 16 and the heat dissipation uniformity of the second switch area 19.

[0105] In actual situations, the airflow in the heat dissipation duct may also be selected to flow through the first switch area 16 and the second switch area 19 in other directions, which is not limited in this embodiment.

[0106] As mentioned above, the second heat exchange channel 2b and the heat dissipation air duct are connected end to end to form an internal circulation air duct. Figure 5 and Figure 6 As shown, in order to facilitate the formation of an internal circulation air duct, the heat dissipation air duct includes: a first heat dissipation air duct 1a, a second heat dissipation air duct 1b, a third heat dissipation air duct 1c and a fourth heat dissipation air duct 1d.

[0107] It should be noted that in order to display the air duct, Figure 6 The first cabinet door 11, the second cabinet door 12 and other electrical components are hidden therein.

[0108] The first heat dissipation duct 1a, the second heat dissipation duct 1b, the third heat dissipation duct 1c, the fourth heat dissipation duct 1d and the second heat exchange channel 2b are connected end to end in sequence. In this case, the second heat exchange channel 2b is connected to the first heat dissipation duct 1a and the fourth heat dissipation duct 1d, and the heat exchanger 2 can be set on the first cabinet door 11; or the third heat dissipation duct 1c, the second heat dissipation duct 1b, the first heat dissipation duct 1a, the fourth heat dissipation duct 1d and the second heat exchange channel 2b are connected end to end in sequence. In this case, the second heat exchange channel 2b is connected to the fourth heat dissipation duct 1d and the third heat dissipation duct 1c, and the heat exchanger 2 can be set on the second cabinet door 12.

[0109] The first switch area 16 is located in the first heat dissipation duct 1a, and the first heat dissipation duct 1a is arranged along the second direction to ensure that the airflow in the heat dissipation duct flows through the first switch area 16 along the second direction; the second switch area 19 is located in the third heat dissipation duct 1c, and the third heat dissipation duct 1c is arranged along the first direction to ensure that the airflow in the heat dissipation duct flows through the second switch area 19 along the first direction.

[0110] The heat dissipation duct has a simple structure, which is beneficial to further improving the heat dissipation effect.

[0111] When the second heat exchange channel 2b is connected to the first heat dissipation duct 1a and the fourth heat dissipation duct 1d, the inlet of the first heat dissipation duct 1a or the fourth heat dissipation duct 1d is the heat dissipation inlet of the heat dissipation duct, and the outlet of the other is the heat dissipation outlet of the heat dissipation duct. When the inlet of the first heat dissipation duct 1a is the heat dissipation inlet of the heat dissipation duct, the airflow in the heat dissipation duct first flows through the switch 3 in the first switch area 16 and the switch 3 in the second switch area 19, thereby improving the heat dissipation effect on the switch 3.

[0112] When the second heat exchange channel 2b is connected to the fourth heat dissipation duct 1d and the third heat dissipation duct 1c, the inlet of the third heat dissipation duct 1c or the fourth heat dissipation duct 1d is the heat dissipation inlet of the heat dissipation duct, and the outlet of the other is the heat dissipation outlet of the heat dissipation duct. When the inlet of the third heat dissipation duct 1c is the heat dissipation inlet of the heat dissipation duct, the airflow in the heat dissipation duct first flows through the switch 3 in the first switch area 16 and the switch 3 in the second switch area 19, thereby improving the heat dissipation effect on the switch 3.

[0113] In the above-mentioned internal circulation air duct, when there is a turn, in order to facilitate the circulation of airflow, the above-mentioned electrical cabinet further includes the first fan 4, and / or the heat exchanger 2 further includes the second fan 6. For example, it can be selected that the electrical cabinet further includes the first fan 4, it can also be selected that the heat exchanger 2 further includes the second fan 6, or it can also be selected that the electrical cabinet further includes the first fan 4 and the heat exchanger 2 further includes the second fan 6.

[0114] The first fan 4 is used to drive the airflow from the first switch area 16 to the second switch area 19, or from the second switch area 19 to the first switch area 16. In this way, it is convenient for the airflow to flow through the first switch area 16 and the second switch area 19, thereby facilitating the airflow to circulate in the inner circulation air duct.

[0115] In order to facilitate driving the airflow, the first fan 4 can be set at the connection point of the second heat dissipation duct 1b and the third heat dissipation duct 1c. In order to avoid the first fan 4 interfering with the arrangement of the switch 3, the first fan 4 can be set in the second heat dissipation duct 1b. Of course, the first fan 4 can be set in the first heat dissipation duct 1a, the second heat dissipation duct 1b or the third heat dissipation duct 1c, and is not limited to the above method.

[0116] The first fan 4 may be a turbulent fan to improve the turbulent effect. The first fan 4 may also be a centrifugal fan or an axial flow fan, which is selected according to actual conditions, and this embodiment does not limit this.

[0117] The second fan 6 is used to drive the airflow from the fourth heat dissipation air channel 1d to the second heat exchange channel 2b, or from the second heat exchange channel 2b to the fourth heat dissipation air channel 1d. In this way, the airflow can flow through the first switch area 16 and the second switch area 19, thereby facilitating the airflow to circulate in the inner circulation air channel.

[0118] In order to facilitate driving the airflow, the second fan 6 is arranged at the connection between the fourth heat dissipation air channel 1d and the second heat exchange channel 2b. Further, the second fan 6 is arranged in the second heat exchange channel 2b.

[0119] The second fan 6 may be a turbulent fan to improve the turbulent effect. The second fan 6 may also be a centrifugal fan or an axial flow fan, which is selected according to actual conditions, and this embodiment does not limit this.

[0120] It should be noted that, when the second heat exchange channel 2b is connected to the first heat dissipation air channel 1a and the fourth heat dissipation air channel 1d, and the inlet of the first heat dissipation air channel 1a is the heat dissipation inlet of the heat dissipation air channel, the first fan 4 is used to drive the airflow from the first switch area 16 to the second switch area 19, and the second fan 6 is used to drive the airflow from the fourth heat dissipation air channel 1d to the second heat exchange channel 2b. When the second heat exchange channel 2b is connected to the third heat dissipation air channel 1c and the fourth heat dissipation air channel 1d, and the inlet of the third heat dissipation air channel 1c is the heat dissipation inlet of the heat dissipation air channel, the first fan 4 is used to drive the airflow from the second switch area 19 to the first switch area 16, and the second fan 6 is used to drive the airflow from the second heat exchange channel 2b to the fourth heat dissipation air channel 1d.

[0121] In actual application, a fan may be provided at the connection point between the third heat dissipation duct 1c and the fourth heat dissipation duct 1d, or a fan may be provided at other places, and it is not limited to the first fan 4 and the second fan 6 mentioned above.

[0122] As mentioned above, the cabinet body 1 is provided with a first cabinet door 11 and a second cabinet door 12. In order to facilitate the installation of the second fan 6, the second fan 6 can be provided on the second cabinet door 12 or the first cabinet door 11.

[0123] It should be noted that the second fan 6 is a part of the heat exchanger 2; when the heat exchanger 2 is arranged on the first cabinet door 11, the second fan 6 is arranged on the first cabinet door 11; when the heat exchanger 2 is arranged on the second cabinet door 12, the second fan 6 is arranged on the second cabinet door 12.

[0124] In order to facilitate the arrangement of the fourth heat dissipation air duct 1d, the fourth heat dissipation air duct 1d may include: a heat dissipation air duct section 11d and a heat dissipation air duct section 12d connected to the heat dissipation air duct section 11d; wherein the heat dissipation air duct section 11d and the second heat exchange channel 2b are arranged side by side, and the second heat dissipation air duct 1b and the heat dissipation air duct section 12d are arranged side by side. Furthermore, the second heat dissipation air duct 1b and the heat dissipation air duct section 12d may be arranged in sequence along the vertical direction.

[0125] It should be noted that, when the first heat dissipation duct 1a, the second heat dissipation duct 1b, the third heat dissipation duct 1c, the fourth heat dissipation duct 1d and the second heat exchange channel 2b are connected end to end in sequence, the first heat dissipation duct 1a, the second heat dissipation duct 1b, the third heat dissipation duct 1c, the first heat dissipation duct section 11d, the second heat dissipation duct section 12d and the second heat exchange channel 2b are connected end to end in sequence. When the third heat dissipation duct 1c, the second heat dissipation duct 1b, the first heat dissipation duct 1a, the fourth heat dissipation duct 1d and the second heat exchange channel 2b are connected end to end in sequence, the third heat dissipation duct 1c, the second heat dissipation duct 1b, the first heat dissipation duct 1a, the second heat dissipation duct section 12d, the first heat dissipation duct section 11d and the second heat exchange channel 2b are connected end to end in sequence.

[0126] In order to facilitate airflow, the electrical cabinet further includes a third fan 5, which is used to drive airflow from the first cooling air duct section 11d to the second cooling air duct section 12d, or from the second cooling air duct section 12d to the first cooling air duct section 11d.

[0127] It should be noted that, when the first heat dissipation duct 1a, the second heat dissipation duct 1b, the third heat dissipation duct 1c, the fourth heat dissipation duct 1d and the second heat exchange channel 2b are connected end to end in sequence, the third fan 5 is used to drive the airflow from the first heat dissipation duct 11d to the second heat dissipation duct 12d. When the third heat dissipation duct 1c, the second heat dissipation duct 1b, the first heat dissipation duct 1a, the fourth heat dissipation duct 1d and the second heat exchange channel 2b are connected end to end in sequence, the third fan 5 is used to drive the airflow from the second heat dissipation duct 12d to the first heat dissipation duct 11d.

[0128] In order to facilitate driving the airflow, the third fan 5 is arranged at the connection between the first section 11d of the heat dissipation air duct and the second section 12d of the heat dissipation air duct. In order to facilitate the airflow in the third heat dissipation air duct 1c to flow to the fourth heat dissipation air duct 1d, or to facilitate the airflow in the fourth heat dissipation air duct 1d to flow to the third heat dissipation air duct 1c, the third fan 5 can be selected to be arranged in the first section 11d of the heat dissipation air duct. In this way, there is no need to arrange a fan at the connection between the third heat dissipation air duct 1c and the fourth heat dissipation air duct 1d, which can reduce the number of fans, reduce the fan cost, and simplify the structure of the electrical cabinet.

[0129] The third fan 5 may be a turbulent fan to improve the turbulent effect. The third fan 5 may also be a centrifugal fan or an axial flow fan, which is selected according to the actual situation, and this embodiment does not limit this. Fig. 9 and Fig.10 As shown, in some other embodiments, the switches 3 in the first switch area 16 and the switches 3 in the second switch area 19 may be selected to be distributed in a T-shape. Based on this, the first switch area 16 and the second switch area 19 may be selected to be distributed in a T-shape.

[0130] It should be noted that Fig.10for Fig. 9 The top view of the electrical cabinet shown, Fig.10 The circuit breaker area 15, the power distribution area 18, the first wiring area 17 and the second wiring area 110 mentioned later are not shown.

[0131] In the above embodiment, the airflow in the heat dissipation duct flows through the first switch area 16 and the second switch area 19 along the second direction, so that the airflow can flow evenly through each switch 3 in the first switch area 16 and the airflow can flow evenly through each switch 3 in the second switch area 19, thereby improving the heat dissipation uniformity of the first switch area 16 and the heat dissipation uniformity of the second switch area 19.

[0132] In actual situations, the airflow in the heat dissipation duct may also be selected to flow through the first switch area 16 and the second switch area 19 in other directions, which is not limited in this embodiment.

[0133] As mentioned above, the second heat exchange channel 2b and the heat dissipation air duct are connected end to end to form an internal circulation air duct. Figure 9-12 As shown, in order to facilitate the formation of an internal circulation air duct, the heat dissipation air duct includes: a sixth heat dissipation air duct 1f, a seventh heat dissipation air duct 1g and an eighth heat dissipation air duct 1h.

[0134] It should be noted that in order to show the airflow direction, Fig.11 and Fig.12 The first cabinet door 11 and the second cabinet door 12 as well as other electrical components are hidden therein.

[0135] The sixth heat dissipation air duct 1f, the seventh heat dissipation air duct 1g, the eighth heat dissipation air duct 1h and the second heat exchange channel 2b are connected end to end in sequence.

[0136] The first switch area 16 and the second switch area 19 are both located in the sixth heat dissipation duct 1f. The sixth heat dissipation duct 1f is arranged along the second direction to ensure that the airflow in the heat dissipation duct flows through the first switch area 16 and the second switch area 19 along the second direction.

[0137] The sixth heat dissipation duct 1f and the eighth heat dissipation duct 1h are arranged side by side, that is, the eighth heat dissipation duct 1h is also arranged along the second direction, and the seventh heat dissipation duct 1g and the second heat exchange channel 2b are arranged side by side.

[0138] In the sixth heat dissipation duct 1f and the eighth heat dissipation duct 1h, the inlet of one is the heat dissipation inlet of the heat dissipation duct, and the outlet of the other is the heat dissipation outlet of the heat dissipation duct. Figure 9-11 As shown, the inlet of the sixth heat dissipation air duct 1f is the heat dissipation inlet of the heat dissipation air duct, and the outlet of the eighth heat dissipation air duct 1h is the heat dissipation outlet of the heat dissipation air duct; Fig.12 As shown, the inlet of the eighth heat dissipation air duct 1h is the heat dissipation inlet of the heat dissipation air duct, and the outlet of the sixth heat dissipation air duct 1f is the heat dissipation outlet of the heat dissipation air duct.

[0139] In the case where the inlet of the sixth heat dissipation air duct 1f is the heat dissipation inlet of the heat dissipation air duct, as shown in FIG. Figure 9-11 As shown, the airflow in the heat dissipation duct first flows through the switches 3 in the first switch area 16 and the switches 3 in the second switch area 19 , thereby improving the heat dissipation effect on the switches 3 .

[0140] When the inlet of the sixth heat dissipating air duct 1f is the heat dissipating inlet of the heat dissipating air duct, if the heat exchanger 2 is arranged on the first cabinet door 11, the first switch area 16 is close to the inlet of the sixth heat dissipating air duct 1f; if the heat exchanger 2 is arranged on the second cabinet door 12, the second switch area 19 is close to the inlet of the sixth heat dissipating air duct 1f.

[0141] The heat dissipation duct has a simple structure, which is beneficial to further improving the heat dissipation effect.

[0142] In order to facilitate the setting of the sixth heat dissipation duct 1f and the eighth heat dissipation duct 1h, the sixth heat dissipation duct 1f and the eighth heat dissipation duct 1h can be selected to be distributed in sequence along the vertical direction. Exemplarily, the sixth heat dissipation duct 1f is lower than the eighth heat dissipation duct 1h, the sixth heat dissipation duct 1f is arranged in the horizontal direction, and the eighth heat dissipation duct 1h is arranged in the horizontal direction; or, the sixth heat dissipation duct 1f is higher than the eighth heat dissipation duct 1h, the sixth heat dissipation duct 1f is arranged in the horizontal direction, and the eighth heat dissipation duct 1h is arranged in the horizontal direction. Of course, the sixth heat dissipation duct 1f and the eighth heat dissipation duct 1h can also be selected to be distributed in other directions, and this embodiment does not limit this.

[0143] In the above-mentioned internal circulation air duct, when there is a turn, in order to facilitate the circulation of airflow, the above-mentioned electrical cabinet further includes a fourth fan 7, and / or the electrical cabinet further includes a fifth fan 8, and / or the heat exchanger 2 further includes a second fan 6. Exemplarily, it can be selected that the electrical cabinet further includes a fourth fan 7, the electrical cabinet further includes a fifth fan 8, or the heat exchanger 2 further includes a second fan 6; it can also be selected that the electrical cabinet further includes a fourth fan 7 and the electrical cabinet further includes a fifth fan; it can also be selected that the electrical cabinet further includes a fifth fan 8 and the heat exchanger 2 further includes a second fan 6; it can also be selected that the electrical cabinet further includes a fourth fan 7 and the heat exchanger 2 further includes a second fan 6; it can also be selected that the electrical cabinet further includes a fourth fan 7 and the heat exchanger 2 further includes a second fan 6; it can also be selected that the electrical cabinet further includes a fourth fan 7, the electrical cabinet further includes a fifth fan 8, and the heat exchanger 2 further includes a second fan 6.

[0144] The fourth fan 7 is used to drive the airflow from the sixth heat dissipation air duct 1f to the seventh heat dissipation air duct 1g, or from the seventh heat dissipation air duct 1g to the sixth heat dissipation air duct 1f. In this way, the airflow can flow through the sixth heat dissipation air duct 1f and the seventh heat dissipation air duct 1g, thereby facilitating the airflow to circulate in the inner air duct.

[0145] To facilitate driving the airflow, the fourth fan 7 may be arranged at the connection between the sixth cooling air duct 1f and the seventh cooling air duct 1g. To prevent the fourth fan 7 from interfering with the arrangement of the switch 3, the fourth fan 7 may be arranged in the seventh cooling air duct 1g.

[0146] The fifth fan 8 is used to drive the airflow from the seventh heat dissipation air duct 1g to the eighth heat dissipation air duct 1h, or from the eighth heat dissipation air duct 1h to the seventh heat dissipation air duct 1g. In this way, the airflow can flow through the eighth heat dissipation air duct 1h and the seventh heat dissipation air duct 1g, thereby facilitating the airflow to circulate in the inner air duct.

[0147] To facilitate driving the airflow, the fifth fan 8 may be arranged at the connection between the eighth cooling air duct 1h and the seventh cooling air duct 1g. To prevent the fifth fan 8 from interfering with the installation of other components, the fifth fan 8 may be arranged in the seventh cooling air duct 1g.

[0148] The second fan 6 is used to drive the airflow from the eighth heat dissipation air channel 1h to the second heat exchange channel 2b, or from the second heat exchange channel 2b to the eighth heat dissipation air channel 1h. In this way, it is convenient for the airflow to flow through the eighth heat dissipation air channel 1h and the second heat exchange channel 2b, thereby facilitating the airflow to flow in the inner circulation air channel.

[0149] In order to facilitate driving the airflow, the second fan 6 is arranged at the connection between the eighth heat dissipation air channel 1h and the second heat exchange channel 2b. Further, the second fan 6 is arranged in the second heat exchange channel 2b.

[0150] The second fan 6 may be a turbulent fan to improve the turbulent effect. The second fan 6 may also be a centrifugal fan or an axial flow fan, which is selected according to actual conditions, and this embodiment does not limit this.

[0151] It should be noted that, when the fourth fan 7 is used to drive the airflow from the sixth heat dissipation air duct 1f to the seventh heat dissipation air duct 1g, Figure 9-11 As shown, the fifth fan 8 is used to drive the airflow from the seventh heat dissipation air duct 1g to the eighth heat dissipation air duct 1h, and the second fan 6 is used to drive the airflow from the eighth heat dissipation air duct 1h to the second heat exchange channel 2b. In this case, under the action of the fourth fan 7, the airflow in the second heat exchange channel 2b enters the sixth heat dissipation air duct 1f, and the airflow in the sixth heat dissipation air duct 1f enters the seventh heat dissipation air duct 1g; under the action of the fifth fan 8, the airflow in the seventh heat dissipation air duct 1g enters the eighth heat dissipation air duct 1h; under the action of the second fan 6, the airflow in the eighth heat dissipation air duct 1h enters the second heat exchange channel 2b.

[0152] When the fourth fan 7 is used to drive the airflow from the seventh heat dissipation duct 1g to the sixth heat dissipation duct 1f, as shown in FIG. Fig.12As shown, the second fan 6 is used to drive the airflow from the second heat exchange channel 2b to the eighth heat dissipation channel 1h, and the fifth fan 8 is used to drive the airflow from the eighth heat dissipation channel 1h to the seventh heat dissipation channel 1g. In this case, under the action of the second fan 6, the airflow in the second heat exchange channel 2b enters the eighth heat dissipation channel 1h; under the action of the fifth fan 8, the airflow in the eighth heat dissipation channel 1h enters the seventh heat dissipation channel 1g; under the action of the fourth fan 7, the airflow in the seventh heat dissipation channel 1g enters the sixth heat dissipation channel 1f and the second heat exchange channel 2b.

[0153] As mentioned above, the cabinet body 1 is provided with a first cabinet door 11 and a second cabinet door 12. For the convenience of installation and maintenance, the heat exchanger 2 is provided on the first cabinet door 11, and the fourth fan 7 and the fifth fan 8 are both provided on the cabinet door opposite to the first cabinet door 11; or, the heat exchanger 2 is provided on the second cabinet door 12, and the fourth fan 7 and the fifth fan 8 are both provided on the cabinet door opposite to the second cabinet door 12. It should be noted that the fourth fan 7 and the heat exchanger 2 are respectively provided on two opposite cabinet doors, and the fifth fan 8 and the heat exchanger 2 are respectively provided on two opposite cabinet doors.

[0154] The types of the fourth fan 7 and the fifth fan 8 are selected according to actual conditions, and this embodiment does not limit this. For the description of the second fan 6, please refer to the above text, and will not be repeated here.

[0155] In actual application, other fans may also be arranged at other positions of the internal circulation air duct, and are not limited to the fourth fan 7, the fifth fan 8 and the second fan 6 mentioned above.

[0156] In the embodiment of the present application, the electrical cabinet further includes a circuit breaker and a power distribution module. Figure 3 , Figure 4 , Figure 7 , Figure 8 and Fig. 9 As shown, in some embodiments, the cabinet 1 is further provided with a circuit breaker area 15 and a power distribution area 18. The circuit breaker area 15 is used to set the circuit breaker, and the power distribution area 18 is used to set the power distribution module. The circuit breaker area 15 and the first switch area 16 are located on the same side of the cabinet 1, and the power distribution area 18 and the second switch area 19 are located on the same side of the cabinet 1.

[0157] As mentioned above, the first switch area 16 and the second switch area 19 are distributed in an L-shape in the cross section of the cabinet 1 . Based on this, the circuit breaker area 15 and the power distribution area 18 can be selected to be distributed in an L-shape in the cross section of the cabinet 1 .

[0158] As mentioned above, the first switch area 16 and the second switch area 19 are distributed in a T-shape in the cross section of the cabinet 1 . Based on this, the circuit breaker area 15 and the power distribution area 18 can be selected to be distributed in a T-shape in the cross section of the cabinet 1 .

[0159] It should be noted that the circuit breaker area 15 does not include the devices arranged in the circuit breaker area 15. The power distribution area 18 does not include the devices arranged in the power distribution area 18.

[0160] In order to facilitate wiring, the circuit breaker area 15 and the first switch area 16 may be distributed in sequence along the vertical direction, and the power distribution area 18 and the second switch area 19 may be distributed in sequence along the vertical direction.

[0161] Exemplarily, the circuit breaker area 15 is located on the top side of the first switch area 16 , and the distribution area 18 is located on the top side of the second switch area 19 ; or, the circuit breaker area 15 is located on the bottom side of the first switch area 16 , and the distribution area 18 is located on the bottom side of the second switch area 19 .

[0162] The circuit breaker area 15 and the distribution area 18 are both located in the heat dissipation duct. In this way, the first switch area 16, the second switch area 19, the circuit breaker area 15 and the distribution area 18 can be distributed along the air flow direction in the heat dissipation duct according to a set order, thereby achieving heat dissipation for the circuit breaker and the distribution module.

[0163] In the case where the heat dissipation duct includes the first heat dissipation duct 1a, the second heat dissipation duct 1b, the third heat dissipation duct 1c and the fourth heat dissipation duct 1d, and the fourth heat dissipation duct 1d includes the first heat dissipation duct section 11d and the second heat dissipation duct section 12d, the power distribution area 18 is located in the first heat dissipation duct section 11d, and the circuit breaker area 15 is located in the second heat dissipation duct section 12d. In this case, the circuit breaker area 15 is located on the top side of the first switch area 16, the power distribution area 18 is located on the top side of the second switch area 19, and the second heat dissipation duct section 12d is located on the top of the second heat dissipation duct 1b.

[0164] In the case where the heat dissipating air duct includes the sixth heat dissipating air duct 1f, the seventh heat dissipating air duct 1g and the eighth heat dissipating air duct 1h, the power distribution area 18 and the circuit breaker area 15 are both located in the eighth heat dissipating air duct 1h.

[0165] like Figure 5-Figure 8 As shown, in some embodiments, the first switch area 16, the second switch area 19, the power distribution area 18 and the circuit breaker area 15 can be selected to be distributed in sequence along the airflow direction. Since the switch 3 generates a large amount of heat and is sensitive to heat, the switch 3 can be cooled first, and then the power distribution module and the circuit breaker can be cooled, thereby improving the heat dissipation effect.

[0166] In other embodiments, the circuit breaker area 15, the power distribution area 18, the second switch area 19 and the first switch area 16 may be selected to be distributed in sequence along the airflow direction.

[0167] Combine the following Figure 5-Figure 8, which illustrates a heat dissipation method of the electrical cabinet. The airflow after cooling by the heat exchanger 2 enters the first heat dissipation duct 1a, flows through the first switch area 16 in the first heat dissipation duct 1a, enters the second heat dissipation duct 1b, and then is led to the third heat dissipation duct 1c through the first fan 4. After the airflow flows through the second switch area 19 in the third heat dissipation duct 1c, it flows to the first heat dissipation duct section 11d of the fourth heat dissipation duct 1d under the action of the third fan 5. After the airflow flows through the power distribution area 18 in the first heat dissipation duct section 11d, it continues to flow under the action of the third fan 5 and enters the second heat dissipation duct section 12d. The airflow flows through the circuit breaker area 15 in the second heat dissipation duct section 12d. Under the action of the second fan 6, the airflow enters the second heat exchange channel 2b from the second heat exchange channel 12d. The airflow flowing through the second heat exchange channel 2b is cooled by the airflow flowing through the first heat exchange channel 2a, and then enters the first heat dissipation duct 1a, and circulates in sequence.

[0168] It should be noted that Figure 5 In the figure, “×” indicates perpendicular to the paper surface and inward, and “·” indicates perpendicular to the paper surface and outward.

[0169] Combine the following Figure 9-11 , which illustrates another heat dissipation method of the electrical cabinet. The airflow after cooling by the heat exchanger 2 enters the sixth heat dissipation duct 1f, flows through the first switch area 16 and the second switch area 19 in the sixth heat dissipation duct 1f, and then enters the seventh heat dissipation duct 1g under the action of the fourth fan 7. Under the action of the fifth fan 8, the airflow enters the eighth heat dissipation duct 1h from the seventh heat dissipation duct 1g, flows through the power distribution area 18 and the circuit breaker area 15 in the eighth heat dissipation duct 1h, and then enters the second heat exchange channel 2b. The airflow flowing through the second heat exchange channel 2b is cooled by the airflow flowing through the first heat exchange channel 2a, and then enters the first heat dissipation duct 1a, and circulates in sequence.

[0170] Combine the following Fig.12 , which illustrates another heat dissipation method of the electrical cabinet. The airflow after cooling by the heat exchanger 2 enters the eighth heat dissipation duct 1h, flows through the circuit breaker area 15 and the power distribution area 18 in the eighth heat dissipation duct 1h, and then enters the seventh heat dissipation duct 1g under the action of the fifth fan 8. Under the action of the fourth fan 7, the airflow enters the sixth heat dissipation duct 1f from the seventh heat dissipation duct 1g, flows through the second switch area 19 and the first switch area 16 in the sixth heat dissipation duct 1f, and then enters the second heat exchange channel 2b. The airflow flowing through the second heat exchange channel 2b is cooled by the airflow flowing through the first heat exchange channel 2a, and then enters the eighth heat dissipation duct 1h, and circulates in sequence.

[0171] like Figure 3 , Figure 4 , Figure 7 , Figure 8 and Fig. 9As shown, in order to facilitate wiring, the above-mentioned cabinet 1 is also provided with a first wiring area 17 and a second wiring area 110; the first wiring area 17 and the first switch area 16 are located on the same side of the cabinet, and the first wiring area 17 and the first switch area 16 are adjacent to each other; the second wiring area 110 and the second switch area 19 are located on the same side of the cabinet 1, and the second wiring area 110 and the second switch area 19 are adjacent to each other.

[0172] In actual situations, the cabinet 1 may be provided with a circuit breaker area 15 and a distribution area 18, but without the first wiring area 17 and the second wiring area 110; the cabinet 1 may be provided with the first wiring area 17 and the second wiring area 110, but without the circuit breaker area 15 and the distribution area 18; the cabinet 1 may be provided with the circuit breaker area 15, the distribution area 18, the first wiring area 17 and the second wiring area 110.

[0173] It should be noted that when the cabinet 1 is provided with the circuit breaker area 15, the power distribution area 18, the first wiring area 17 and the second wiring area 110, the entire cabinet 1 is divided into zones, making the internal structure of the cabinet 1 simpler and facilitating the installation of components inside the cabinet 1.

[0174] In some embodiments, the cabinet 1 is provided with a circuit breaker area 15, a distribution area 18, a first wiring area 17 and a second wiring area 110. The circuit breaker area 15 can be selected to be located on the top side of the first switch area 16, and the distribution area 18 can be selected to be located on the top side of the second switch area 19. The first wiring area 17 is located on the bottom side of the first switch area 16, and the second wiring area 110 is located on the bottom side of the second switch area 19.

[0175] If the first switch area 16 and the second switch area are distributed in an L shape in the cross section of the cabinet 1, the first wiring area 17 and the second wiring area 110 are distributed in an L shape in the cross section of the cabinet 1. If the first switch area 16 and the second switch area are distributed in a T shape in the cross section of the cabinet 1, the first wiring area 17 and the second wiring area 110 are distributed in a T shape in the cross section of the cabinet 1.

[0176] like Fig.13 As shown, in some embodiments, a tray 10 is disposed in the cabinet body 1 , and the tray 10 is located on the inner side of the second cabinet door 12 . Fig.13 The second cabinet door 12 is not shown. Fig.13 The second cabinet door 12 is hidden in the middle. Of course, the tray 10 can also be selected to be located on the inner side of the first cabinet door 11, or the tray 10 can be located on the inner sides of the first cabinet door 11 and the second cabinet door 12.

[0177] It should be noted that the inner side of the first cabinet door 11 and the second cabinet door 12 refers to the side of the first cabinet door 11 and the second cabinet door 12 that is closer to the interior of the cabinet body 1. If the tray 10 is located on the inner side of the first cabinet door 11 and the second cabinet door 12, there are at least two trays 10, at least one tray 10 is located on the inner side of the first cabinet door 11, and at least one tray 10 is located on the inner side of the second cabinet door 12.

[0178] The tray 10 can be used to install the first device; when the cabinet door corresponding to the tray 10 is open, the first device is exposed to the cabinet body 1 so that the first device can be maintained. In this way, the maintenance of the first device is convenient without disassembling any structural parts and wiring harnesses, etc., thereby improving the maintainability of the electrical cabinet.

[0179] It should be noted that, when the first device does not need maintenance, the cabinet doors (the first cabinet door 11 and / or the second cabinet door 12) corresponding to the tray 10 can be closed.

[0180] The first device on the tray 10 may include: a counter device and / or a power distribution circuit device. The power distribution circuit device may include a power distribution control template and a temperature control device, etc., which are not limited in this embodiment. Of course, the first device on the tray 10 may also include other devices, which are not limited in this embodiment.

[0181] In order to improve the maintainability of the electrical cabinet, a second device may be optionally provided in the cabinet 1, and the second device is located on the inner side of the tray 10. The outer side of the tray 10 faces the cabinet door corresponding to the tray 10, and the inner side of the tray 10 faces away from the cabinet door corresponding to the tray 10. The tray 10 is movably provided in the cabinet 1; when the cabinet door corresponding to the tray 10 is open and the tray 10 is moved to a set position, the second device is exposed to the cabinet 1 so that the second device can be maintained. In this way, the second device can be maintained by opening the corresponding cabinet door and removing the tray 10, without disassembling any structural parts and wiring harnesses, etc., thereby improving the maintainability of the electrical cabinet.

[0182] In order to facilitate maintenance of the second device, the tray 10 may be rotatably disposed in the cabinet 1. Exemplarily, the tray 10 is rotatably disposed in the cabinet 1 via a hinge.

[0183] Of course, the tray 10 may be movably arranged in a straight line in the cabinet 1 or the tray 10 may be moved in other ways, which is not limited to the above embodiments.

[0184] The second device includes a fan, which is used to drive the air flow in the heat dissipation duct.

[0185] It should be noted that, when the electrical cabinet includes the third fan 5, the second device may include the third fan 5. As described above, the third fan 5 may be understood as being used to drive the airflow in the heat dissipation duct. When the electrical cabinet includes the fourth fan 7 and the fifth fan 8, the second device may include the fifth fan 8. As described above, the fifth fan 8 may be understood as being used to drive the airflow in the heat dissipation duct.

[0186] Of course, the second device may be selected to be other types. For example, the second device may also include a voltage transformer and / or a lightning arrester, which is not limited in the embodiments of the present application.

[0187] In the above electrical cabinet, the movement mode of the tray 10 and the components included in the second device can be arbitrarily combined. For example, the tray 10 is rotatably arranged in the cabinet body 1, and the second device includes the third fan 5 or the fifth fan 8, which facilitates the movement of the tray 10 and the maintenance of the third fan 5 or the fifth fan 8.

[0188] It should be noted that the tray 10 is used to install the first device, and the second device is provided in the cabinet 1, which can be implemented at the same time, so that the maintainability of the electrical cabinet can be further improved. Of course, the tray 10 can also be used to install the first device, and the second device can be provided in the cabinet 1 and implemented separately, which is not limited in this embodiment.

[0189] As mentioned above, the heat exchanger 2 can be arranged on the first cabinet door 11 or the second cabinet door 12. For ease of installation, one of the tray 10 and the heat exchanger 2 can be arranged on the first cabinet door 11 and the other on the second cabinet door 12.

[0190] Based on the electrical cabinet provided in the above embodiment, an embodiment of the present application further provides a photovoltaic power generation system, which includes the electrical cabinet described in the above embodiment.

[0191] The electrical cabinet is connected to the inverter and the transformer, wherein the inverter is converged through the electrical cabinet and transmitted to the transformer.

[0192] The electrical cabinet may be a junction cabinet or other types, which is not limited in the embodiments of the present application.

[0193] Since the electrical cabinet provided in the above embodiment has the above technical effects, and the above photovoltaic power generation system includes the electrical cabinet described in the above embodiment, the above photovoltaic power generation system also has corresponding technical effects, which will not be described in detail herein.

[0194] The technical features mentioned above and the technical features shown separately in the drawings can be combined with each other arbitrarily, as long as the combined technical features are not contradictory. All feasible feature combinations are technical contents clearly recorded in this article. Any one of the multiple sub-features contained in the same sentence can be applied independently, and does not have to be applied together with other sub-features.

[0195] 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. An electrical cabinet, characterized in that: include: Cabinets and heat exchangers; The cabinet is provided with a first switch area and a second switch area, the first switch area and the second switch area are distributed on two adjacent sides of the cabinet, the first switch area is provided with switches distributed along a first direction, the second switch area is provided with switches distributed along a second direction, and the first direction is perpendicular to the second direction; The first switch area and the second switch area are both located in the heat dissipation air duct of the cabinet and are distributed along the air flow direction in the heat dissipation air duct; the heat exchanger can perform heat exchange with the heat dissipation air duct.

2. The electrical cabinet according to claim 1, characterized in that: The switches in the first switch area and the switches in the second switch area are distributed in an L shape.

3. The electrical cabinet according to claim 2, characterized in that: The airflow in the heat dissipation duct flows through the first switch area along the second direction, and the airflow in the heat dissipation duct flows through the second switch area along the first direction.

4. The electrical cabinet according to claim 3, characterized in that: The heat exchanger comprises a first heat exchange channel and a second heat exchange channel capable of performing heat exchange, and the heat dissipation air channel and the second heat exchange channel are connected end to end to form an internal circulation air channel; Wherein, the heat dissipation air duct includes: a first heat dissipation air duct, a second heat dissipation air duct, a third heat dissipation air duct and a fourth heat dissipation air duct; The first heat dissipation air duct, the second heat dissipation air duct, the third heat dissipation air duct, the fourth heat dissipation air duct and the second heat exchange channel are connected end to end in sequence, or the third heat dissipation air duct, the second heat dissipation air duct, the first heat dissipation air duct, the fourth heat dissipation air duct and the second heat exchange channel are connected end to end in sequence; The first switch area is located in the first heat dissipation duct, and the first heat dissipation duct is arranged along the second direction; the second switch area is located in the third heat dissipation duct, and the third heat dissipation duct is arranged along the first direction.

5. The electrical cabinet according to claim 4, characterized in that: The electrical cabinet further comprises a first fan, the first fan being used to drive airflow from the first switch area to the second switch area, or from the second switch area to the first switch area; And / or, the heat exchanger further includes a second fan, and the second fan is used to drive the airflow from the fourth heat dissipation air duct to the second heat exchange channel, or from the second heat exchange channel to the fourth heat dissipation air duct.

6. The electrical cabinet according to claim 5, characterized in that: The first fan is arranged in the second heat dissipation duct.

7. The electrical cabinet according to claim 4, characterized in that: The fourth heat dissipation air duct comprises: a first heat dissipation air duct section, and a second heat dissipation air duct section connected to the first heat dissipation air duct section; The first heat dissipation air duct and the second heat exchange channel are arranged side by side, and the second heat dissipation air duct and the second heat dissipation air duct are arranged side by side.

8. The electrical cabinet according to claim 7, characterized in that: It also includes a third fan, which is used to drive the air flow from the first section of the heat dissipation air duct to the second section of the heat dissipation air duct, or from the second section of the heat dissipation air duct to the first section of the heat dissipation air duct.

9. The electrical cabinet according to claim 1, characterized in that: The switches in the first switch area and the switches in the second switch area are distributed in a T shape.

10. The electrical cabinet according to claim 9, characterized in that: The airflow in the heat dissipation duct flows through the first switch area and the second switch area along the second direction.

11. The electrical cabinet according to claim 10, characterized in that: The heat exchanger comprises a first heat exchange channel and a second heat exchange channel capable of performing heat exchange, and the heat dissipation air channel and the second heat exchange channel are connected end to end to form an internal circulation air channel; Wherein, the heat dissipation air duct includes: a sixth heat dissipation air duct, a seventh heat dissipation air duct and an eighth heat dissipation air duct; The sixth heat dissipation air duct, the seventh heat dissipation air duct, the eighth heat dissipation air duct and the second heat exchange channel are connected end to end in sequence; The first switch area and the second switch area are both located in the sixth heat dissipation air duct, the sixth heat dissipation air duct and the eighth heat dissipation air duct are both arranged along the second direction and distributed side by side, and the seventh heat dissipation air duct and the second heat exchange channel are distributed side by side.

12. The electrical cabinet according to claim 11, characterized in that: The electrical cabinet further includes a fourth fan, the fourth fan being used to drive airflow from the sixth heat dissipation air duct to the seventh heat dissipation air duct, or from the seventh heat dissipation air duct to the sixth heat dissipation air duct; And / or, the electrical cabinet further includes a fifth fan, the fifth fan being used to drive air flow from the seventh heat dissipation air duct to the eighth heat dissipation air duct, or from the eighth heat dissipation air duct to the seventh heat dissipation air duct; And / or, the heat exchanger further includes a second fan, and the second fan is used to drive the airflow from the eighth heat dissipation air duct to the second heat exchange channel, or from the second heat exchange channel to the eighth heat dissipation air duct.

13. The electrical cabinet according to claim 1, characterized in that: The heat exchanger comprises a first heat exchange channel and a second heat exchange channel capable of performing heat exchange, wherein the heat dissipation air channel and the second heat exchange channel are connected end to end to form an internal circulation air channel.

14. The electrical cabinet according to claim 13, characterized in that: The heat dissipation inlet and outlet of the heat dissipation air duct and the heat exchanger are distributed on the same side of the cabinet; And / or, the heat dissipation inlet of the heat dissipation duct faces the first switch area or the second switch area; And / or, a first cabinet door is provided on the side of the cabinet having the first switch area, and a second cabinet door is provided on the side of the cabinet having the second switch area; wherein the heat exchanger is provided on the first cabinet door or the second cabinet door; And / or, the inlet and outlet of the first heat exchange channel are both connected to the external environment of the cabinet; the heat exchanger also includes a sixth fan, and the sixth fan is used to drive the air of the external environment to flow through the first heat exchange channel.

15. The electrical cabinet according to any one of claims 1 to 14, characterized in that: The cabinet is further provided with a circuit breaker area and a power distribution area, the circuit breaker area and the first switch area are located on the same side of the cabinet, the power distribution area and the second switch area are located on the same side of the cabinet, and the circuit breaker area and the power distribution area are both located in the heat dissipation duct; And / or, the cabinet is also provided with a first wiring area and a second wiring area; the first wiring area and the first switch area are located on the same side of the cabinet, and the first wiring area and the first switch area are adjacent to each other; the second wiring area and the second switch area are located on the same side of the cabinet, and the second wiring area and the second switch area are adjacent to each other.

16. The electrical cabinet according to claim 15, characterized in that: The first switch area, the second switch area, the power distribution area and the circuit breaker area are distributed in sequence along the airflow direction, or the circuit breaker area, the power distribution area, the second switch area and the first switch area are distributed in sequence along the airflow direction.

17. The electrical cabinet according to any one of claims 1 to 14, characterized in that: In a case where a first cabinet door is disposed on the side of the cabinet having the first switch area, and a second cabinet door is disposed on the side of the cabinet having the second switch area, a tray is disposed in the cabinet, and the tray is located on the inner side of at least one of the first cabinet door and the second cabinet door; Wherein, the tray is used to install the first device; when the cabinet door corresponding to the tray is open, the first device is exposed from the cabinet body so that the first device can be maintained; And / or, a second device is provided in the cabinet, the second device is located on the inner side of the tray, and the tray is movably provided in the cabinet; when the cabinet door corresponding to the tray is opened and the tray is moved to a set position, the second device is exposed from the cabinet so that the second device can be maintained.

18. The electrical cabinet according to claim 17, characterized in that: The tray is rotatably disposed in the cabinet; And / or, the second device includes a third fan or a fifth fan, the third fan is used to drive the air flow in the heat dissipation duct, and the fifth fan is used to drive the air flow in the heat dissipation duct.

19. A photovoltaic power generation system, characterized in that: Comprising the electrical cabinet according to any one of claims 1-18.

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