Electrical equipment and photovoltaic system

Abstract

The utility model discloses electrical equipment and a photovoltaic system, the electrical equipment comprises a box body, an air-cooled transformer and a power distribution device, a first accommodating space and a second accommodating space are arranged in the box body, the first accommodating space is communicated with the second accommodating space, and the power distribution device is arranged in the second accommodating space. The air-cooled transformer comprises an air-cooled assembly and a transformer body, the transformer body is arranged in the first containing space, the air-cooled assembly can conduct air-cooled heat dissipation on the transformer body, and meanwhile the air-cooled assembly can disturb air flow in the box body so that the air flow can flow between the first containing space and the second containing space; therefore, heat emitted by the transformer body and the power distribution device is taken away, and influence of the heat of the transformer body on the power distribution device is reduced. Meanwhile, a heat insulation structure is omitted, the structure is simplified, the cost is reduced, and a higher power level can be adapted under the same space size.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic power generation, and more particularly to an electrical device and a photovoltaic system. BACKGROUND

[0002] In the related art, a self-cooling transformer is usually used in an electrical device, in which case, heat insulation protection measures are usually additionally arranged to reduce the influence of heat emitted by the transformer on surrounding devices and components, and the overall design cost is high. Therefore, how to reduce the cost of the electrical device is a technical problem to be solved by those skilled in the art. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the purpose of the present application is to provide an electrical device, so that the electrical device can adapt to a higher power level under the same space size.

[0004] Another purpose of the present application is to provide a photovoltaic system comprising the above-mentioned electrical device.

[0005] To achieve the above-mentioned purposes, the present application provides the following technical solutions:

[0006] An electrical device comprises:

[0007] A box body, an inside of the box body is provided with a first accommodating space and a second accommodating space, the first accommodating space and the second accommodating space are communicated, and the second accommodating space is at least one;

[0008] A forced air cooling transformer, comprising a forced air cooling assembly and a transformer body, the transformer body is arranged in the first accommodating space;

[0009] A power distribution device is arranged in each second accommodating space.

[0010] Optionally, in the above-mentioned electrical device, the first accommodating space is arranged between two second accommodating spaces.

[0011] Optionally, in the above-mentioned electrical device, the two second accommodating spaces are respectively a first space and a second space;

[0012] The air outlet of the forced air cooling assembly is arranged towards the first space or the second space to form a heat dissipation flow channel in the direction from the first accommodating space to the first space or the second space.

[0013] Optionally, in the above-mentioned electrical device, the forced air cooling assembly comprises a plurality of fans, the air outlets of at least two of the plurality of fans are respectively arranged towards the first space and the second space, and the formed heat dissipation flow channels are arranged in a staggered manner.

[0014] Optionally, in the above-described electrical equipment, along the first direction, the first accommodating space is disposed on the same side of each of the second accommodating spaces, and each of the second accommodating spaces is arranged sequentially along the first direction; or, along the second direction, the first accommodating space is disposed on the same side of each of the second accommodating spaces, and each of the second accommodating spaces is arranged sequentially along the second direction.

[0015] The air outlet of the air-cooling component is arranged facing the first accommodating space or the second accommodating space to form a heat dissipation channel from the first accommodating space to the second accommodating space or from the second accommodating space to the first accommodating space.

[0016] Optionally, in the above-described electrical equipment, along the first direction, the first accommodating space is disposed on the same side of each of the second accommodating spaces, and each of the second accommodating spaces is arranged side by side along the second direction; or, along the second direction, the first accommodating space is disposed on the same side of each of the second accommodating spaces, and each of the second accommodating spaces is arranged side by side along the first direction.

[0017] The air-cooled component is disposed between the power distribution device and the transformer body.

[0018] Optionally, in the above-mentioned electrical equipment, along the first direction or the second direction, the first accommodating space is disposed on the same side of each of the second accommodating spaces, and each of the second accommodating spaces is stacked along the third direction;

[0019] The air-cooled component is disposed between the power distribution device and the transformer body.

[0020] Optionally, in the above-described electrical equipment, the air-cooling assembly is disposed at the bottom and / or top of the transformer body.

[0021] Optionally, in the above-described electrical equipment, the air-cooling component is disposed within the first accommodating space and / or the second accommodating space;

[0022] Alternatively, one part of the fans of the air-cooled assembly may be installed in the first accommodating space, and the other part of the fans may be installed in the second accommodating space.

[0023] Optionally, in the above-mentioned electrical equipment, the power distribution device includes at least one of an inverter, a ring main unit, and a switch cabinet.

[0024] A photovoltaic system includes the aforementioned electrical equipment.

[0025] The electrical equipment provided in this application includes a enclosure, an air-cooled transformer, and a power distribution device. The enclosure has a first accommodating space and a second accommodating space, which are connected. There is at least one second accommodating space. The power distribution device is located within the second accommodating space. The air-cooled transformer includes an air-cooling component and a transformer body. The transformer body is located within the first accommodating space. The air-cooling component can dissipate heat from the transformer body using air cooling. Simultaneously, the air-cooling component can agitate the airflow inside the enclosure, causing it to flow between the first and second accommodating spaces, thereby simultaneously removing heat dissipated by the transformer body and the power distribution device. The transformer body and power distribution device of the electrical equipment provided in this application are housed in the same enclosure, and the first and second accommodating spaces are connected. This allows the cooling airflow generated by the air-cooling components to simultaneously cool the transformer body and the power distribution device, thereby reducing the impact of the transformer body's heat on the power distribution device. Furthermore, since the first and second accommodating spaces are connected, there is no need to install partitions or other heat insulation structures for thermal protection between them. This simplifies the structure, reduces costs, and makes the electrical equipment smaller for the same power rating while ensuring normal operation. Additionally, the connection between the first and second accommodating spaces facilitates wiring between the transformer body and the power distribution device.

[0026] Compared to existing technologies, the electrical equipment provided in this application uses air-cooling components to cool the transformer body, thus eliminating the need for excessive transformer oil to absorb and dissipate heat, allowing for a smaller oil storage volume and reduced manufacturing costs. The air-cooled transformer itself is smaller in size, enabling it to accommodate higher power-level electrical equipment within the same space. The air-cooling components can simultaneously cool both the transformer body and the power distribution equipment, reducing overheating issues in the power distribution equipment and eliminating the need for insulation devices, thereby lowering cooling costs and reducing size. The air-cooling components result in a lower overall temperature in the external environment of the enclosure, reducing thermal limitations on external components and allowing for more flexible placement.

[0027] The photovoltaic system provided in this application includes the aforementioned electrical equipment, and therefore also possesses the aforementioned structure and beneficial effects, which will not be repeated here. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The dashed arrows in the figures indicate the airflow direction inside the box.

[0029] Figure 1This is a schematic diagram of a first structure of the electrical equipment disclosed in the embodiments of this application;

[0030] Figure 2 This is a schematic diagram of a second structure of the electrical equipment disclosed in the embodiments of this application;

[0031] Figure 3 This is a schematic diagram of a third structure of the electrical equipment disclosed in the embodiments of this application;

[0032] Figure 4 This is a schematic diagram of the first type of support frame for the box disclosed in the embodiments of this application;

[0033] Figure 5 This is a schematic diagram of a fourth structure of the electrical equipment disclosed in the embodiments of this application;

[0034] Figure 6 This is a schematic diagram of the second type of support frame for the box disclosed in the embodiments of this application;

[0035] Figure 7 This is a schematic diagram of the fifth structure of the electrical equipment disclosed in the embodiments of this application;

[0036] Figure 8 This is a schematic diagram of the sixth structure of the electrical equipment disclosed in the embodiments of this application;

[0037] Figure 9 This is a schematic diagram of the seventh structure of the electrical equipment disclosed in the embodiments of this application;

[0038] Figure 10 This is a schematic diagram of the eighth structure of the electrical equipment disclosed in the embodiments of this application;

[0039] Figure 11 This is a schematic diagram of the ninth structure of the electrical equipment disclosed in the embodiments of this application.

[0040] Among them, 100 is the enclosure, 101 is the first accommodating space, 102 is the second accommodating space, 1021 is the first space, 1022 is the second space, 1023 is the low-voltage room, 1024 is the high-voltage room, 110 is the supporting frame, 200 is the air-cooled transformer, 210 is the transformer body, 220 is the air-cooling component, 300 is the power distribution device, 310 is the switch cabinet, 320 is the ring main unit, and 330 is the inverter. Detailed Implementation

[0041] The core of this application is to disclose an electrical device that can accommodate higher power levels within the same spatial dimensions.

[0042] Another key aspect of this application is the disclosure of a photovoltaic system that includes the aforementioned electrical equipment.

[0043] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the utility model as described in the claims. Additionally, the complete contents of the structures represented in the embodiments below are not limited to those necessary for the solution of the utility model as described in the claims. It should be noted that, for ease of description, only the parts relevant to the utility model are shown in the drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0044] Combination Figures 1-11 The electrical equipment disclosed in this application includes a housing 100, an air-cooled transformer 200, and a power distribution device 300. The housing 100 has a first accommodating space 101 and a second accommodating space 102, which are connected. There is at least one second accommodating space 102. The power distribution device 300 is disposed within the second accommodating space 102. The air-cooled transformer 200 includes an air-cooling component 220 and a transformer body 210. The transformer body 210 is disposed within the first accommodating space 101. The air-cooling component 220 can dissipate heat from the transformer body 210 through air cooling. Simultaneously, the air-cooling component 220 can agitate the airflow inside the housing 100, causing it to flow between the first accommodating space 101 and the second accommodating space 102, thereby simultaneously removing heat dissipated by both the transformer body 210 and the power distribution device 300.

[0045] The types of power distribution devices 300 include, but are not limited to, inverters 330, ring main units 320, and switchgear 310. Inverters 330 convert direct current to alternating current. Ring main units 320 are high-voltage power distribution equipment used to distribute electrical energy to different loads and provide power protection, control, and monitoring functions. Switchgear 310 is a low-voltage power distribution equipment used to distribute and control electrical energy and provide power protection, control, and monitoring functions. Different power distribution devices 300 can be installed in the same second accommodating space 102 or in different second accommodating spaces 102. Installing them in the same second accommodating space 102 reduces the size of the electrical equipment, while installing them in different second accommodating spaces 102 reduces the mutual heat influence between different power distribution devices 300.

[0046] The transformer body 210 and the power distribution device 300 of the electrical equipment disclosed in this application are arranged in the same enclosure 100, and the first accommodating space 101 and the second accommodating space 102 are connected. This allows the heat dissipation airflow generated by the air-cooling component 220 to simultaneously dissipate heat from both the transformer body 210 and the power distribution device 300, thereby reducing the impact of the heat from the transformer body 210 on the power distribution device 300. At the same time, since the first accommodating space 101 and the second accommodating space 102 are connected, there is no need to install a partition or other heat insulation structure between them for thermal protection. This simplifies the structure and reduces costs while ensuring the normal operation of the electrical equipment, resulting in a smaller size of the electrical equipment at the same power level. In addition, the connection between the first accommodating space 101 and the second accommodating space 102 facilitates the wiring between the transformer body 210 and the power distribution device 300.

[0047] Compared to existing technologies, the electrical equipment disclosed in this application uses an air-cooling component 220 to cool the transformer body 210, thus eliminating the need for excessive transformer oil to absorb and dissipate heat, allowing for a smaller oil storage volume and reduced manufacturing costs. The air-cooled transformer 200 itself is smaller in size, allowing it to accommodate higher power-level electrical equipment within the same space. The air-cooling component 220 can simultaneously cool both the transformer body 210 and the power distribution device 300, thereby reducing the problem of overheating in the power distribution device 300 and eliminating the need for insulation devices, reducing heat dissipation costs and minimizing size. The air-cooling component 220 also results in a lower overall temperature in the external environment of the enclosure 100, reducing the thermal constraints on external components and allowing for more flexible placement.

[0048] The power distribution device 300 and the transformer body 210 have various relative positional arrangements. The positional arrangement of the first accommodating space 101 and the second accommodating space 102 can be adjusted according to the actual positions of the transformer body 210 and the power distribution device 300.

[0049] In a specific embodiment disclosed in this application, combined with Figure 1 The first accommodating space 101 is disposed between the two second accommodating spaces 102 so that the heat dissipation airflow driven by the air-cooling component 220 during operation can be easily transferred to the two second accommodating spaces 102 and dissipate heat on the power distribution device 300 in the two second accommodating spaces 102, so as to ensure a uniform heat dissipation effect on different power distribution devices 300.

[0050] In one embodiment, combined with Figure 2 and Figure 3There are two second accommodating spaces 102, defined as the first space 1021 and the second space 1022. The air outlet of the air-cooling component 220 can be arranged towards either the first space 1021 or the second space 1022 to form a heat dissipation channel from the first accommodating space 101 to either the first space 1021 or the second space 1022. The cooling airflow can flow directionally along the heat dissipation channel, simultaneously cooling the power distribution devices 300 within the first and second spaces 1021 and 1022. Specifically, power distribution devices 300 with higher cooling requirements can be arranged upstream of the heat dissipation channel, while those with lower cooling requirements can be arranged downstream, satisfying the cooling needs of different power distribution devices 300.

[0051] Combination Figure 7 When the air-cooled assembly 220 includes multiple fans, the air outlets of at least two of the fans can be arranged facing the first space 1021 and the second space 1022 respectively, forming corresponding heat dissipation channels. The heat dissipation channels formed by these two fans are staggered to simultaneously meet the heat dissipation needs of the power distribution devices 300 within the first space 1021 and the second space 1022. In a further optimized design, the heat dissipation channels formed by these two fans are connected end-to-end to create a heat dissipation circulation within the housing 100, balancing the temperature within the entire housing 100 and ensuring the normal operation of each power distribution device 300 and the transformer body 210. In addition to the fans, the air-cooled assembly 220 also includes structures such as fixing components for securing the fans.

[0052] Those skilled in the art will understand that the number and arrangement of fans in the air-cooled assembly 220 can be adapted to factors such as the capacity and heat generation of the electrical equipment and the characteristics of other surrounding components. The layout of the power distribution device 300 and the surrounding components of the electrical equipment can be adjusted according to their heat sensitivity. The installation angle of the air-cooled assembly 220 relative to the transformer body 210 can be freely adjusted according to actual conditions. The airflow and direction control of the air-cooled assembly 220 can achieve more precise control over the heat dissipation of the transformer body 210 and effectively reduce the mutual influence of heat radiation between the transformer body 210 and the power distribution device 300.

[0053] It should be noted that in the accompanying drawings of the embodiments of this application, the arrow marked X represents the first direction X, the arrow marked Y represents the second direction Y, and the arrow marked Z represents the third direction Z. The first direction X, the second direction Y, and the third direction Z are introduced to more clearly illustrate the structure and relative positional relationship of each component in the electrical equipment. In practical applications, the first direction X, the second direction Y, and the third direction Z can be changed according to the different placement methods of the electrical equipment.

[0054] In some embodiments, along the first direction X, the first accommodating space 101 is disposed on the same side of each of the second accommodating spaces 102, and the second accommodating spaces 102 are arranged sequentially along the first direction X; or, along the second direction Y, the first accommodating space 101 is disposed on the same side of each of the second accommodating spaces 102, and the second accommodating spaces 102 are arranged sequentially along the second direction Y. The air outlet of the air-cooling component 220 is arranged facing the first accommodating space 101 or the second accommodating space 102 to form a heat dissipation channel from the first accommodating space 101 to the second accommodating space 102 or from the second accommodating space 102 to the first accommodating space 101. The heat dissipation airflow driven by the air-cooling component 220 during operation can easily flow within the first accommodating space 101 and each of the second accommodating spaces 102, and dissipate heat from the transformer body 210 and the power distribution device 300 to meet the heat dissipation requirements. For example, in combination with Figure 10 and Figure 11 , Figure 10 The diagram shows a second accommodating space 102 consisting of two spaces along a first direction X. A first accommodating space 101 is disposed on the same side of the two second accommodating spaces 102. The two second accommodating spaces 102 are arranged sequentially along the first direction X, and an air-cooling component 220 is disposed within the second accommodating space 102 with its air outlet facing the first accommodating space 101, thereby forming a heat dissipation channel from the second accommodating space 102 to the first accommodating space 101. Figure 11 The diagram shows a technical solution in which two second accommodating spaces 102 are arranged along the second direction Y. A first accommodating space 101 is disposed on the same side of the two second accommodating spaces 102. The two second accommodating spaces 102 are arranged sequentially along the second direction Y. The air-cooling component 220 is disposed in the first accommodating space 101, and the air outlet is arranged facing the second accommodating space 102 to form a heat dissipation channel from the first accommodating space 101 to the second accommodating space 102. The structure is simple and the layout is convenient.

[0055] In other embodiments, along the first direction X, the first accommodating space 101 is disposed on the same side of each of the second accommodating spaces 102, and the second accommodating spaces 102 are arranged side by side along the second direction Y; or, along the second direction Y, the first accommodating space 101 is disposed on the same side of each of the second accommodating spaces 102, and the second accommodating spaces 102 are arranged side by side along the first direction X. For example, Figure 8The diagram illustrates a technical solution where there are two second accommodating spaces 102 along the second direction Y, and a first accommodating space 101 is disposed on the same side of the two second accommodating spaces 102, and the two second accommodating spaces 102 are arranged side by side along the first direction X. In this solution, an air-cooling component 220 is disposed between the power distribution device 300 and the transformer body 210 to ensure the maximum disturbance effect of the air-cooling component 220 on the airflow in the first accommodating space 101 and the second accommodating space 102, thereby ensuring the heat dissipation effect of the air-cooling component 220 on the power distribution device 300 and the transformer body 210.

[0056] In some other embodiments, along a first direction X or a second direction Y, the first accommodating space 101 is disposed on the same side of each of the second accommodating spaces 102, and the second accommodating spaces 102 are stacked along a third direction Z. For example, in combination with Figure 9 , Figure 9 The diagram illustrates a technical solution where there are two second accommodating spaces 102 along a first direction X. A first accommodating space 101 is disposed on the same side of the two second accommodating spaces 102, and the two second accommodating spaces 102 are stacked along a third direction Z. The air-cooling component 220 is disposed between the power distribution device 300 and the transformer body 210 to ensure the maximum disturbance effect on the airflow in the first accommodating space 101 and the second accommodating space 102, while also taking into account the heat dissipation performance of the power distribution device 300 and the transformer body 210.

[0057] The air-cooling assembly 220 can be specifically disposed at the bottom and / or top of the transformer body 210, that is, the air-cooling assembly 220 can be disposed at the bottom of the transformer body 210, or at the top of the transformer body 210, or simultaneously at both the bottom and top of the transformer body 210. For example, Figure 1 The present invention discloses a technical solution for an air-cooled assembly 220 comprising multiple fans arranged side-by-side at the bottom of a transformer body 210. The air-cooled assembly 220 can generate a cooling airflow towards the transformer body 210. Since hot air tends to rise, the air outlet direction of the air-cooled assembly 220 is aligned with the direction of the hot air's automatic flow, reducing the power and energy consumption required for heat dissipation and thus lowering production costs. Because the top of the transformer body 210 is where heat is most concentrated, placing the air-cooled assembly 220 at the top directly cools the heat source, improving cooling efficiency. Furthermore, since hot air rises, dust and contaminants tend to accumulate at the top of the transformer body 210; placing the air-cooled assembly 220 at the top helps disperse these contaminants, reducing dust accumulation and extending equipment lifespan. The technical solution of simultaneously placing the air-cooled assembly 220 at both the bottom and top of the transformer body 210 combines the advantages of both, and will not be elaborated further here.

[0058] The position of the air-cooling component 220 can be flexibly adjusted, specifically in three arrangements: First, the air-cooling component 220 is placed within either the first accommodating space 101 or the second accommodating space 102; second, the air-cooling component 220 is placed simultaneously within both the first and second accommodating spaces 101 and 102, i.e., at the boundary between the two spaces; third, part of the fan of the air-cooling component 220 is placed within the first accommodating space 101, and the other part is placed within the second accommodating space 102. The second and third arrangements can simultaneously and directly disturb the airflow within both the first and second accommodating spaces 101 and 102, thus ensuring the heat dissipation of both the power distribution device 300 and the transformer body 210.

[0059] Specifically, the multiple second accommodating spaces 102 can be used as a low-voltage chamber 1023 and a high-voltage chamber 1024, respectively. The low-voltage chamber 1023 houses low-voltage power distribution equipment for controlling and protecting low-voltage electrical equipment, while the high-voltage chamber 1024 houses high-voltage power distribution equipment for controlling and protecting high-voltage electrical equipment. The specific arrangement of the fans can be adjusted according to the actual heat dissipation requirements of the low-voltage and high-voltage power distribution equipment. Combined with... Figure 6 , Figure 6 The present invention discloses a technical solution in which two low-pressure chambers 1023 are respectively disposed on both sides of a first accommodating space 101, and one high-pressure chamber 1024 is disposed on one side of a low-pressure chamber 1023. The specific number and position of the low-pressure chambers 1023 and the high-pressure chambers 1024 can be adjusted according to actual conditions and are not limited to those disclosed in this application. Figure 6 The layout plan shown in the image.

[0060] Combination Figure 5 The enclosure 100 includes a support frame 110, which encloses the internal space of the enclosure 100. The first accommodating space 101 and the second accommodating space 102 can be separated by at least one support beam of the support frame 110. Specifically, the support beams of the support frame 110 can be fixed together by bolts or other methods, resulting in a simple structure and convenient disassembly and maintenance. The transformer body 210 and the power distribution device 300 can both be fixed to the support frame 110 by bolts or other methods. The air-cooling assembly 220 can be fixed to the support frame 110 or the transformer body 210 by bolts or other methods, resulting in a simple structure and convenient disassembly and maintenance.

[0061] The photovoltaic system disclosed in this application includes the aforementioned electrical equipment, and therefore also possesses the aforementioned structure and beneficial effects, which will not be repeated here.

[0062] In the description of this application, it should be understood that the terms "bottom," "top," and "above" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, "a plurality of" means two or more, and "at least one" can mean one, two, or more.

[0063] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily 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 this application. Specific technical means in some embodiments may be incorporated, in whole or in part, into another embodiment unless explicitly excluded by another embodiment. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electrical device, characterized in that, include: The box (100) has a first accommodating space (101) and a second accommodating space (102) inside, the first accommodating space (101) and the second accommodating space (102) are connected, and there is at least one second accommodating space (102); An air-cooled transformer (200) includes an air-cooling assembly (220) and a transformer body (210), wherein the transformer body (210) is disposed within the first accommodating space (101); The power distribution device (300) is installed in each of the second accommodating spaces (102).

2. The electrical equipment as described in claim 1, characterized in that, The first accommodating space (101) is disposed between the two second accommodating spaces (102).

3. The electrical equipment as described in claim 2, characterized in that, The two second accommodating spaces (102) are the first space (1021) and the second space (1022), respectively. The air outlet of the air-cooled component (220) is arranged toward the first space (1021) or the second space (1022) to form a heat dissipation channel from the first accommodating space (101) toward the first space (1021) or the second space (1022).

4. The electrical equipment as described in claim 3, characterized in that, The air-cooled assembly (220) includes a plurality of fans, at least two of which have their air outlets facing the first space (1021) and the second space (1022) respectively, and the heat dissipation channels formed are staggered.

5. The electrical equipment as described in claim 1, characterized in that, Along the first direction, the first accommodating space (101) is disposed on the same side of each of the second accommodating spaces (102), and each of the second accommodating spaces (102) is arranged sequentially along the first direction; or, along the second direction, the first accommodating space (101) is disposed on the same side of each of the second accommodating spaces (102), and each of the second accommodating spaces (102) is arranged sequentially along the second direction; The air outlet of the air-cooled component (220) is arranged toward the first accommodating space (101) or the second accommodating space (102) to form a heat dissipation channel from the first accommodating space (101) to the second accommodating space (102) or from the second accommodating space (102) to the first accommodating space (101).

6. The electrical equipment as claimed in claim 1, characterized in that, Along the first direction, the first accommodating space (101) is disposed on the same side of each of the second accommodating spaces (102), and each of the second accommodating spaces (102) is arranged side by side along the second direction; or, along the second direction, the first accommodating space (101) is disposed on the same side of each of the second accommodating spaces (102), and each of the second accommodating spaces (102) is arranged side by side along the first direction; The air-cooled component (220) is disposed between the power distribution device (300) and the transformer body (210).

7. The electrical equipment as claimed in claim 1, characterized in that, Along the first direction or the second direction, the first accommodating space (101) is disposed on the same side of each of the second accommodating spaces (102), and each of the second accommodating spaces (102) is stacked along the third direction; The air-cooled component (220) is disposed between the power distribution device (300) and the transformer body (210).

8. The electrical equipment as claimed in claim 1, characterized in that, The air-cooled assembly (220) is disposed at the bottom and / or top of the transformer body (210).

9. The electrical equipment as claimed in claim 1, characterized in that, The air-cooled component (220) is disposed within the first accommodating space (101) and / or the second accommodating space (102); Alternatively, a portion of the fan of the air-cooled assembly (220) may be disposed in the first accommodating space (101), and another portion of the fan may be disposed in the second accommodating space (102).

10. The electrical equipment as claimed in claim 1, characterized in that, The power distribution device (300) includes at least one of an inverter (330), a ring main unit (320), and a switch cabinet (310).

11. A photovoltaic system, characterized in that, Includes the electrical equipment as described in any one of claims 1-10.

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