Heat dissipation device, box-type substation and box-type energy storage all-in-one machine

Abstract

The embodiment of the invention provides a heat dissipation device, a box-type transformer substation and a box-type energy storage all-in-one machine, relates to the technical field of heat dissipation devices, and aims to solve the technical problem that in the prior art, impurities in the external environment can enter the transformer substation through a semi-closed area on the heat dissipation device, so that the heat dissipation effect of circuits and equipment in the transformer substation is affected. The device comprises a shell, the shell comprises an inner shell and an outer shell, a top cover is arranged at the upper end of the outer shell, and a connecting plate is arranged at the end, away from the top cover, of the inner shell; a first heat dissipation flow channel is defined on the side, away from the outer shell, of the inner shell, and a second heat dissipation flow channel is defined between the inner shell and the outer shell; wherein a first fixing grating used for fixing the fan is arranged in the first heat dissipation flow channel, and a second fixing grating used for fixing the filtering assembly is arranged in the second heat dissipation flow channel. By arranging the filtering assembly, external impurities are prevented from entering the heat dissipation device and the interior of the transformer substation through the semi-closed area of the heat dissipation device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat sinks, in particular to a heat dissipation device, a box-type substation and a box-type energy storage all-in-one machine. BACKGROUND

[0002] Box-type substations are usually used to reduce high-voltage electricity to low-voltage electricity and distribute it to users, while protecting the lines and equipment. The lines and equipment generate heat during operation, and the generated heat accumulates inside the box-type transformer. Therefore, multiple heat dissipation devices need to be provided on the box-type transformer.

[0003] Most of the existing heat dissipation devices are semi-closed structures. Dust, sand particles, plant fluff, small insects and other external impurities in the external environment can directly pass through the semi-closed area of the heat dissipation device under natural action or with air flow, and eventually enter the inside of the transformer. The impurities will accumulate on the lines and equipment, thereby affecting the heat dissipation effect of the lines and equipment inside the substation. SUMMARY

[0004] The purpose of the present application includes providing a heat dissipation device, a box-type substation and a box-type energy storage all-in-one machine to improve the technical problem in the prior art that impurities in the external environment can enter the inside of the substation through the semi-closed area of the heat dissipation device, thereby affecting the heat dissipation effect of the lines and equipment inside the substation.

[0005] Embodiments of the present application can be implemented as follows: In a first aspect, the present application provides a heat dissipation device, comprising: a housing, the housing comprising an inner housing and an outer housing which are sequentially sleeved from inside to outside along a first direction, one end of the outer housing being provided with a top cover, and one end of the inner housing away from the top cover being provided with a connecting plate; a first heat dissipation flow channel being defined on one side of the inner housing away from the outer housing, and a second heat dissipation flow channel being defined between the inner housing and the outer housing; a first fixed grid being provided in the first heat dissipation flow channel, and a fan being provided on the first fixed grid; a second fixed grid being provided in the second heat dissipation flow channel, and a filter assembly being arranged on the second fixed grid; the filter assembly comprising a plurality of filter pieces which are overlapped along a second direction; the first direction and the second direction are perpendicular to each other.

[0006] In an optional embodiment, the plurality of filter pieces which are overlapped along the second direction comprise a first filter layer and a second filter layer which is overlapped on the first filter layer; the first filter layer and the second filter layer are dustproof cottons with different filtering accuracies.

[0007] In an optional embodiment, a flow guide grid is arranged on the side of the second fixed grid away from the filter assembly.

[0008] In an optional embodiment, the inner shell and the outer shell are both cylindrical structures; and the top cover is a conical structure.

[0009] In an optional embodiment, the fan comprises a fan hub and a plurality of blades connected to the fan hub. A flow guide cylinder is arranged between the plurality of blades and the inner wall of the inner shell. The length of the blades extending into the flow guide cylinder is The length of the flow guide cylinder in the second direction is Wherein, .

[0010] In an optional embodiment, a flow barrier is arranged between the outer side of the flow guide cylinder and the inner side of the inner shell.

[0011] In an optional embodiment, an inner top cover is arranged on the side of the top cover close to the inner shell, the inner top cover is a conical structure, a heat insulation chamber is formed between the inner top cover and the top cover, and the heat insulation chamber is filled with a heat insulation material.

[0012] In an optional embodiment, a solar film is attached to the surface of the side of the top cover away from the inner shell. An additional heating plate is attached to the surface of the side of the inner top cover away from the top cover, and the additional heating plate is electrically connected to the solar film.

[0013] In a second aspect, the present application provides a box-type substation, comprising a box shell, a box top surface, and at least one heat dissipation device according to any one of the preceding embodiments. The box top surface is arranged on the top of the box shell, and the box shell and the box top surface jointly define a substation chamber. The heat dissipation device is arranged on the box top surface through the connecting plate and is in communication with the substation chamber. An installation slot is formed in the box top surface, and the end of the inner shell close to the connecting plate extends outward and is inserted into the installation slot. A sealing gasket is arranged between the connecting plate and the box top surface.

[0014] In a third aspect, the present application provides a box-type energy storage all-in-one machine, comprising the heat dissipation device according to any one of the preceding embodiments and / or the box-type substation according to the preceding embodiments.

[0015] The heat dissipation device and the box-type substation provided by the embodiments of the present application have the following beneficial effects: This invention provides a heat dissipation device, a box-type substation with the heat dissipation device, and a box-type energy storage unit. The heat dissipation device includes a shell, which includes an inner shell and an outer shell. A top cover is provided at the upper end of the outer shell, and a connecting plate is provided at the end of the inner shell away from the top cover. A first heat dissipation channel is defined on the side of the inner shell away from the outer shell, and a second heat dissipation channel is defined between the inner shell and the outer shell. A first fixed grid for fixing a fan is provided in the first heat dissipation channel, and a second fixed grid for fixing a filter assembly is provided in the second heat dissipation channel. The heat dissipation device is connected to the external environment through the second fixed grid and is in a semi-enclosed form. By providing a filter assembly on the second fixed grid, external impurities are prevented from entering the heat dissipation device and the interior of the substation through the semi-enclosed area of ​​the second fixed grid. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the integrated structure of the heat dissipation device provided in Embodiment 1. Figure 2 This is a cross-sectional structural diagram of the heat dissipation device provided in Embodiment 1. Figure 3 This is a front sectional view of the heat dissipation device provided in Embodiment 1; Figure 4 for Figure 3 A magnified view of a portion of the P section; Figure 5 for Figure 3 Enlarged view of a section of the M-shaped part; Figure 6 This is a schematic diagram of the overall structure of the prefabricated substation provided in Embodiment 2; Figure 7 This is a schematic diagram showing the connection relationship between the heat dissipation device and the prefabricated substation provided in Embodiment 2. Figure 8 This is a cross-sectional structural diagram of the heat dissipation device provided in Embodiment 3.

[0018] Icons: 100 - Shell; 110 - Inner shell; 111 - Connecting plate; 112 - First fixed grid; 120 - Outer shell; 121 - Top cover; 1211 - Solar film; 122 - Second fixed grid; 123 - Flow guide grid; 124 - Inner top cover; 1241 - Heating plate; 125 - Insulation chamber; 200 - fan; 210 - fan hub; 220 - blade; 300 - filter assembly; 310 - first filter layer; 320 - second filter layer; 400 - draft tube; 410 - baffle; 500 - tank housing; 510 - tank top surface; 511 - mounting slot; 512 - gasket; A1 - first heat dissipation channel; A2 - second heat dissipation channel. DETAILED DESCRIPTION

[0019] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work fall within the scope of protection of the present application.

[0021] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish description, and cannot be understood as indicating or implying relative importance.

[0024] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0025] The application provides a heat dissipation device and a box-type transformer substation with the heat dissipation device; similar to the prior art, the box-type transformer substation is used for reducing high-voltage electricity to low-voltage electricity and distributing the low-voltage electricity to users, the box-type transformer substation is loaded with lines and equipment, the lines and the equipment generate heat during operation and accumulate heat inside the box-type transformer, in order to avoid heat accumulation and affect the normal work of the lines and the equipment, a plurality of heat dissipation devices need to be arranged on the box-type transformer.

[0026] At present, the heat dissipation device is usually in a semi-closed form, impurities in the external environment can directly pass through the semi-closed area of the heat dissipation device under the action of nature or airflow and finally enter the inside of the transformer, the impurities will accumulate on the lines and the equipment, thereby affecting the heat dissipation effect of the lines and the equipment. Therefore, in order to ensure the working effect of the lines and the equipment, the heat dissipation device needs to avoid the impurities in the external environment from entering the inside of the box-type transformer substation while ensuring the heat dissipation effect.

[0027] The overall structure, working principle and technical effects of the heat dissipation device, the box-type transformer substation and the box-type energy storage integrated machine provided by the application are described in detail below through embodiments and in combination with the drawings.

[0028] Embodiment one: Please refer to Figure 1 The heat dissipation device provided in this embodiment comprises a shell 100, the shell 100 comprises an inner shell 110 and an outer shell 120 which are sequentially sleeved from inside to outside along a first direction, a first heat dissipation flow channel A1 is defined on a side of the inner shell 110 away from the outer shell 120, and a second heat dissipation flow channel A2 is defined between the inner shell 110 and the outer shell 120; a first fixed grid 112 is arranged in the first heat dissipation flow channel A1, and a fan 200 is arranged on the first fixed grid 112.

[0029] In this embodiment, the working state of the fan 200 is configured as follows: when the fan 200 is in the working state, the fan 200 can drive the heat inside the box-type transformer substation to sequentially pass through the first heat dissipation flow channel A1 and the second heat dissipation flow channel A2 and finally be discharged to the external environment.

[0030] In some embodiments, the working state of the fan 200 can also be configured as follows: when the fan 200 is in the working state, the fan 200 can drive the airflow outside the box-type transformer substation to sequentially pass through the second heat dissipation flow channel A2 and the first heat dissipation flow channel A1 and finally enter the inside of the box-type transformer substation, so as to achieve cooling of the inside of the transformer substation.

[0031] Please refer to Figure 2The second fixed grid 122 is arranged in the second heat dissipation flow channel A2, and the arrangement of the second fixed grid 122 makes the heat dissipation device present a semi-closed structure. In order to avoid impurities in the external environment from entering the heat dissipation device and the power station inside through the second fixed grid 122, a filter assembly 300 is arranged on the second fixed grid 122 in the embodiment.

[0032] It should be noted that the first direction specifically refers to the radial direction of the shell 100, and the second direction specifically refers to the height direction of the shell 100.

[0033] It can be understood that the filter piece can filter out impurities in the airflow passing through, so as to isolate the internal and external environment of the power station, and avoid impurities in the external environment from entering the heat dissipation device and the power station inside through the second fixed grid 122.

[0034] The heat dissipation device provided in the embodiment is in communication with the external environment through the second fixed grid 122 and presents a semi-closed form. By arranging the filter assembly 300 on the second fixed grid 122, it is avoided that impurities in the external environment enter the heat dissipation device and the power station inside through the semi-closed area of the second fixed grid 122, and thus it is avoided that the external impurities are accumulated on the lines and equipment, affecting the heat dissipation effect of the lines and equipment.

[0035] Please continue to refer to Figure 1 In the embodiment, the inner shell 110 and the outer shell 120 are both cylindrical structures. Compared with other structures (such as square ventilation structures), the cylindrical structure has higher ventilation efficiency. In addition, in the processing technology, the cylindrical structure can adopt a rounding process, which is convenient for processing and has better airtightness, that is, higher dustproof and waterproof grades.

[0036] In the embodiment, one end of the outer shell 120 is provided with a top cover 121, and the other end of the inner shell 110 away from the top cover 121 is provided with a connecting plate 111.

[0037] The top cover 121 is used to close the top of the heat dissipation device. On the one hand, the top cover 121 can avoid that impurities (such as rainwater and dust) in the external environment directly fall into the heat dissipation device. On the other hand, the top cover 121 plays a baffle role, so that the airflow can be deflected from the first heat dissipation flow channel A1 to the second heat dissipation flow channel A2 / deflected from the second heat dissipation flow channel A2 to the first heat dissipation flow channel A1 under the action of the fan 200.

[0038] Further, since the top cover 121 directly contacts the external environment, in order to avoid that impurities (such as rainwater / dust) in the external environment are accumulated on the top cover 121, the top cover 121 presents a conical structure in the embodiment, which can be a conical top cover.

[0039] It can be understood that when the external impurities contact the conical top cover 121, the external impurities can naturally slide from the conical surface of the top cover 121 under the action of gravity, thereby avoiding the accumulation of external impurities on the top cover 121 and affecting the heat dissipation effect.

[0040] In actual work, the top cover 121 is exposed to the external environment, and the temperature outside the top cover 121 is usually higher than the inside. In the empty state of the box-type substation, due to the temperature difference between the inside and outside of the top cover 121, condensation will appear on the inside of the top cover 121.

[0041] Please refer to Figure 3 and Figure 5 In order to avoid the appearance of condensation on the inside of the top cover 121, in the embodiment, the side of the top cover 121 close to the inner shell 110 is provided with an inner top cover 124, which is conical similar to the top cover 121. A heat insulation chamber 125 is formed between the inner top cover 124 and the top cover 121, and the heat insulation chamber 125 is filled with heat insulation material.

[0042] In some embodiments, the heat insulation material can be glass silk. By providing the heat insulation chamber 125, the heat preservation effect of the top cover 121 is increased, and the appearance of condensation is reduced.

[0043] Further, the surface of the side of the top cover 121 away from the inner shell 110 is attached with a solar film 1211, and the surface of the side of the inner top cover 124 away from the top cover 121 is attached with a heating plate 1241. The heating plate 1241 is electrically connected with the solar film 1211.

[0044] It can be understood that the solar film 1211 can convert solar energy into electric energy and drive the heating plate 1241. The solar film 1211 can provide electric energy to the heating plate 1241, so that the heating plate 1241 can heat the inner top cover 124 and the top cover 121 in the empty state of the box-type substation, thereby increasing the heat preservation effect of the top cover 121 and reducing the appearance of condensation.

[0045] In the embodiment, the heat dissipation device can be connected with the box-type substation through the connecting plate 111; for example, the connecting plate 111 is connected with the box-type substation through the energy storage nail process.

[0046] Please refer to Figure 3 and Figure 4 In the embodiment, the plurality of filter elements arranged in the second direction include a first filter layer 310 and a second filter layer 320 arranged on the first filter layer 310; the first filter layer 310 and the second filter layer 320 are dustproof cotton with different filtering accuracies.

[0047] In a specific embodiment, the first filter layer 310 is a coarse filter cotton, and specifically can be H-level G3 cotton; the second filter layer 320 is a medium / high-efficiency filter cotton, and specifically can be F-level dustproof filter cotton.

[0048] It should be noted that the arrangement position of the first filter layer 310 and the second filter layer 320 in the second direction can be adjusted according to actual work needs; for example, in some cases, the second filter layer 320 is arranged above the first filter layer 310; in some other cases, the first filter layer 310 is arranged above the second filter layer 320. Generally, the gas flow is selected to pass through the coarse filter cotton first, and then pass through the medium / high-efficiency filter cotton.

[0049] Referring to Figure 2 In the embodiment, the second fixed grid 122 is provided with a flow guide grid 123 away from the side of the filter assembly 300; the flow guide grid 123 can guide the gas flow passing through the second heat dissipation flow channel A2 on the one hand, increase the gas flow rate, and thus improve the heat dissipation efficiency; on the other hand, it can also block part of the external impurities from entering the heat dissipation device through the second fixed grid 122.

[0050] Referring to Figure 2 and Figure 3 In order to improve the heat dissipation effect of the heat dissipation device, in the embodiment, the fan 200 includes a fan hub 210 and a plurality of blades 220 connected with the fan hub 210; the plurality of blades 220 and the inner wall of the inner shell 110 are provided with a flow guide cylinder 400.

[0051] Specifically, the gas flow path is: in the case of passing through the first heat dissipation flow channel A1 to the second heat dissipation flow channel A2, when passing through the flow guide cylinder 400, the flow guide cylinder 400 can guide the gas flow; on the one hand, it can make the originally relatively disordered gas flow driven by the fan 200 become uniform and orderly, reduce the mutual interference and energy loss of the gas flow; on the other hand, it can help the gas flow to be discharged more smoothly, reduce the resistance, and thus increase the air volume to a certain extent, and improve the conveying efficiency of the gas flow.

[0052] Further, the length of the blade 220 extending into the flow guide cylinder 400 is The length of the flow guide cylinder 400 in the second direction is , wherein, .

[0053] The heat dissipation device provided in the embodiment has at least the following technical effects: (1) By arranging the filter assembly 300 on the second fixed grid 122, it is avoided that the external impurities enter the heat dissipation device and the substation inside through the semi-closed area of the second fixed grid 122; (2) The flow guide cylinder 400 is arranged to rectify the airflow driven by the fan 200, so as to improve the heat dissipation effect of the heat dissipation device; (3) The inner shell 110 and the outer shell 120 are both cylindrical structures, which are simple in processing technology, high in ventilation efficiency, and good in sealing performance compared with other structures (such as square ventilation structure); (4) The top cover 121 is a conical structure, which can avoid the accumulation of external impurities (such as rainwater / dust) on the top cover 121, and avoid the influence of the heat dissipation effect caused by the accumulation of external impurities on the top cover 121.

[0054] (5) The inner top cover 124 is arranged on the inner side of the top cover 121, and the heat insulation chamber 125 is formed between the inner top cover 124 and the top cover 121. The heat insulation chamber 125 can increase the heat preservation effect of the top cover 121 and reduce the occurrence of condensation. At the same time, the solar film 1211 is attached to the surface of the side of the top cover 121 away from the inner shell 110, and the heating plate 1241 is attached to the surface of the side of the inner top cover 124 away from the top cover 121. The solar film 1211 can provide electric energy to the heating plate 1241, so that the heating plate 1241 can heat the inner top cover 124 and the top cover 121, thereby increasing the heat preservation effect of the top cover 121 and reducing the occurrence of condensation.

[0055] Embodiment two: Please refer to Figure 6 and Figure 7 , the embodiment provides a box-type substation, which is provided with a plurality of heat dissipation devices in the embodiment one, for heat dissipation of the box-type substation.

[0056] In the embodiment, the box-type substation comprises a box shell 500 and a box top surface 510 arranged on the box shell 500. The box shell 500 and the box top surface 510 jointly define a substation chamber for loading lines and equipment. The heat dissipation device is arranged on the box top surface 510 through the connecting plate 111 and is in communication with the substation chamber.

[0057] Please refer to Figure 7 , in order to avoid the entry of external impurities into the substation chamber from the connection between the heat dissipation device and the box top surface 510, in the embodiment, a flange is arranged on the box top surface 510, and the flange and the box top surface 510 form a mounting groove 511. One end of the inner shell 110 close to the connecting plate 111 extends outward and is inserted into the mounting groove 511. A sealing gasket 512 is arranged between the connecting plate 111 and the box top surface 510.

[0058] In a specific embodiment, the above-mentioned turn-up height is 8mm, and the gasket 512 is a butyl gasket with a compression amount of 30%; by providing the above-mentioned turn-up and the gasket 512, water stains or other impurities can be effectively prevented from entering the transformer chamber through the connection between the heat dissipation device and the top surface 510 of the cabinet.

[0059] In some embodiments, the connection between the heat dissipation device and the top surface 510 of the cabinet is also filled with waterproof sealant, and the waterproof sealant is wrapped with a butyl tape for edge treatment, so as to further improve the waterproof effect.

[0060] Further, the connecting plate 111 and the cabinet transformer station are connected through an energy storage nail process, so as to improve the structural strength and further improve the waterproof effect of the connection between the heat dissipation device and the top surface 510 of the cabinet.

[0061] The embodiment also provides a cabinet energy storage all-in-one machine, which comprises the cabinet transformer station and / or the heat dissipation device provided in the first embodiment.

[0062] The cabinet transformer station and the cabinet energy storage all-in-one machine provided in the embodiment have good sealing performance while having good heat dissipation capacity, so that external impurities can be prevented from entering the transformer chamber through the connection between the heat dissipation device and the top surface 510 of the cabinet.

[0063] Embodiment three: Please refer to Figure 8 The embodiment also provides a heat dissipation device, which has basically the same overall structure, working principle and technical effects as those of the first embodiment, and the difference is that, in the embodiment, a flow baffle 410 is arranged between the outer side of the flow guide cylinder 400 and the inner side of the inner shell 110.

[0064] In a specific embodiment, the flow baffle 410 is in a ring structure, is fixedly arranged between the outer side of the flow guide cylinder 400 and the inner side of the inner shell 110, and is flush with the upper end surfaces of the flow guide cylinder 400 and the inner shell 110, so as to block part of the airflow from entering between the outer side of the flow guide cylinder 400 and the inner side of the inner shell 110, reduce the airflow loss, and further improve the heat dissipation and air outlet effect of the heat dissipation device.

[0065] The above merely provides a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements within the technical scope disclosed in the present application can be easily thought of by those skilled in the art, and should be covered in the protection scope of the present application.

Claims

1. A heat dissipation device, characterized in that, include: The housing (100) includes an inner housing (110) and an outer housing (120) sequentially fitted from the inside to the outside along a first direction. A top cover (121) is provided at one end of the outer housing (120), and a connecting plate (111) is provided at the end of the inner housing (110) away from the top cover (121). A first heat dissipation channel (A1) is defined on the side of the inner housing (110) away from the outer housing (120), and a second heat dissipation channel (A2) is defined between the inner housing (110) and the outer housing (120). The first heat dissipation channel (A1) is provided with a first fixed grille (112), and a fan (200) is provided on the first fixed grille (112); the second heat dissipation channel (A2) is provided with a second fixed grille (122), and a filter assembly (300) is provided on the second fixed grille (122). The filter assembly (300) includes a plurality of filter elements that are overlapped along the second direction; The first direction and the second direction are set perpendicular to each other.

2. The heat dissipation device according to claim 1, characterized in that, The plurality of filter elements overlapping along the second direction include a first filter layer (310) and a second filter layer (320) overlapping the first filter layer (310). The first filter layer (310) and the second filter layer (320) are dustproof cotton with different filtration precision.

3. The heat dissipation device according to claim 1, characterized in that, The second fixed grille (122) has a flow guide grille (123) on the side away from the filter assembly (300).

4. The heat dissipation device according to claim 1, characterized in that, The inner shell (110) and the outer shell (120) are both cylindrical structures; the top cover (121) is conical.

5. The heat dissipation device according to claim 1, characterized in that, The fan (200) includes a fan hub (210) and a plurality of blades (220) connected to the fan hub (210). A guide tube (400) is provided between the plurality of blades (220) and the inner wall of the inner shell (110). The length by which the blade (220) extends into the guide tube (400) is The length of the guide tube (400) in the second direction is ,in, .

6. The heat dissipation device according to claim 5, characterized in that, A baffle plate (410) is provided between the outer side of the guide tube (400) and the inner side of the inner shell (110).

7. The heat dissipation device according to claim 1, characterized in that, The top cover (121) is provided with an inner top cover (124) on the side near the inner shell (110). The inner top cover (124) has a conical structure. A heat insulation chamber (125) is formed between the inner top cover (124) and the top cover (121). The heat insulation chamber (125) is filled with heat insulation material.

8. The heat dissipation device according to claim 7, characterized in that, A solar film (1211) is attached to the surface of the top cover (121) away from the inner shell (110). An additional heating plate (1241) is attached to the surface of the inner top cover (124) away from the top cover (121), and the heating plate (1241) is electrically connected to the solar thin film (1211).

9. A prefabricated substation, characterized in that, It includes a housing shell (500), a housing top surface (510), and at least one heat dissipation device as described in any one of claims 1-8; The top surface (510) of the enclosure is located on the top of the outer shell (500), and the outer shell (500) and the top surface (510) together define the substation chamber. The heat dissipation device is installed on the top surface (510) of the box body through the connecting plate (111) and is connected to the substation chamber; An installation groove (511) is provided on the top surface (510) of the housing, and the inner shell (110) extends outward from the end near the connecting plate (111) and is inserted into the installation groove (511); A sealing gasket (512) is provided between the connecting plate (111) and the top surface (510) of the box.

10. A box-type integrated energy storage unit, characterized in that, It includes the heat dissipation device as described in any one of claims 1-8 or the box-type substation as described in claim 9.

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