Shared air duct type heat dissipation cabinet and direct current charging pile

Abstract

According to the shared air duct type heat dissipation cabinet provided by the utility model, the inner cavity of the heat dissipation cabinet is sequentially divided into the air inlet low-temperature area, the equipment placement area, the high-temperature convergence area and the high-temperature and high-pressure area from the air inlet to the oppositely arranged air outlet through the plurality of shielding protection structures; ventilation and heat dissipation of electrical equipment in a plurality of isolation areas of the equipment placement area can be realized based on the shared air duct, the number of required fans is effectively reduced, and the heat dissipation efficiency is improved; according to the direct current charging pile provided by the utility model, the sharing air duct type heat dissipation cabinet is utilized, so that the power module, the electrical input unit and the electrical output unit share the air inlet duct and the air outlet duct, the air duct structure is simplified, the cost is saved, and the heat dissipation efficiency is improved; according to the shared air duct type heat dissipation cabinet and the direct current charging pile provided by the utility model, the problem of low heat dissipation efficiency caused by the fact that a plurality of special air duct structures need to be designed for a direct ventilation air duct structure in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to a direct-ventilation air duct structure, in particular to a shared air duct type heat dissipation cabinet and a DC charging pile. Background Art

[0002] DC charging stations are a typical example of a heat-dissipating, waterproof cabinet type, requiring high requirements for both water and dust resistance. National standards also specify specific temperature control requirements for internal electrical components. Currently available DC charging stations typically utilize a simple, direct-flow ventilation structure. However, to cool the electrical input, output, and power modules, multiple turbulence fans are often required to stir the air flow and cool key components, thereby achieving uniform internal temperature distribution. Heat is then dissipated through the cabinet housing or system fan area. This approach is simple, cost-effective, and practical. However, it also has certain drawbacks: the electrical input, output, and power modules require dedicated air ducts to reduce the temperature rise of the internal electrical components; higher-power turbulence fans are required to force the airflow, resulting in lower temperature reduction and heat dissipation efficiency; and further design and verification are required to achieve compliance with national temperature standards. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a shared air duct type heat dissipation cabinet and a DC charging pile, which are used to solve the problem in the prior art that the direct ventilation air duct structure requires the design of multiple special air duct structures, resulting in low heat dissipation efficiency.

[0004] To achieve the above-mentioned and other related purposes, the first aspect of the present invention provides a shared duct heat dissipation cabinet. The shared duct heat dissipation cabinet is used to dissipate heat for a plurality of electrical devices installed therein, and includes:

[0005] cooling fan;

[0006] A cabinet body, the cabinet body includes an inner cavity for accommodating the electrical equipment and the cooling fan, and an air inlet and an air outlet relatively opened on the cabinet body; the inner cavity is divided into a low-temperature air inlet zone, an equipment placement zone, a high-temperature convergence zone and a high-temperature and high-pressure zone in sequence from the air inlet to the air outlet, the equipment placement zone is divided into several isolation areas for accommodating the electrical equipment, several of the electrical equipment are arranged in the corresponding isolation areas, and several of the isolation areas are separately provided with an air inlet channel connected to the low-temperature air inlet zone and an air outlet channel connected to the high-temperature convergence zone, the high-temperature convergence zone and the high-temperature and high-pressure zone are connected through a cooling fan, and the cooling fan forms a negative pressure on the air inlet side and a high pressure on the air outlet side, driving the cold air into the low-temperature air inlet zone from the air inlet, and enters the equipment placement area through the air inlet channel to take away the heat from the electrical equipment and enter the high-temperature convergence zone, and then enters the high-temperature and high-pressure zone and is discharged through the air outlet.

[0007] In some embodiments of the first aspect of the present invention, one or more of the isolation areas may include a regional air-guiding fan, and the regional air-guiding fan of the isolation area is arranged at the air inlet channel position or the air outlet channel position of the isolation area, and is used to form a negative pressure in the air inlet low-temperature zone, so that cold air enters the air inlet low-temperature zone from the air inlet from the outside of the cabinet based on air pressure; and draws cold air from the air inlet low-temperature zone into the isolation area and discharges hot air to the high-temperature convergence area to enhance ventilation and heat dissipation of the electrical equipment therein.

[0008] In some embodiments of the first aspect of the present invention, the air volume of the cooling fan is greater than the total air volume of the regional air guide fan, and the negative pressure of the high-temperature convergence zone is greater than the negative pressure of the air inlet low-temperature zone, so that cold air continuously flows from the air inlet low-temperature zone into each of the isolation areas based on air pressure and hot air converges in the high-temperature convergence zone.

[0009] In some embodiments of the first aspect of the present invention, the cabinet further includes a waterproof and dustproof structure for filtering dust and water droplets in the air to prevent them from entering the inner cavity.

[0010] In some embodiments of the first aspect of the present invention, the waterproof and dustproof structure includes an air inlet protection structure arranged on the outside of the air inlet, and the air inlet protection structure includes waterproof louvers and filter cotton.

[0011] In some embodiments of the first aspect of the present invention, the waterproof and dustproof structure includes an air outlet protection structure arranged on the outside of the air outlet, and the air outlet protection structure includes waterproof louvers and filter cotton.

[0012] In some embodiments of the first aspect of the present invention, the equipment placement area is separated from the low-temperature air inlet zone and the high-temperature convergence zone by several shielding and protective structures. The shielding and protective structures are used to protect the electrical equipment in the equipment placement area and prevent the hot air in the high-temperature convergence zone from reversely entering the low-temperature air inlet zone and forming an internal circulation of the air.

[0013] In some embodiments of the first aspect of the present invention, each of the isolation areas of the equipment placement area is separated by a plurality of shielding and protective structures, and the shielding and protective structures are used to protect the electrical equipment in each of the isolation areas and isolate high-temperature air from flowing freely.

[0014] To achieve the above-mentioned and other related objectives, a second aspect of the present invention provides a DC charging pile, wherein the DC charging pile includes any of the above-mentioned shared air duct type heat dissipation cabinets.

[0015] In some embodiments of the second aspect of the present invention, the DC charging pile includes a power module, an electrical input unit, and an electrical output unit; wherein, the power module, the electrical input unit, and the electrical output unit are arranged in several of the isolated areas of the shared duct type heat dissipation cabinet, and ventilation and heat dissipation are achieved through the shared duct type heat dissipation cabinet.

[0016] As described above, the utility model provides a shared air duct type heat dissipation cabinet, which divides the inner cavity of the heat dissipation cabinet from the air inlet to the relatively arranged air outlet into a low-temperature air inlet zone, an equipment placement zone, a high-temperature convergence zone and a high-temperature and high-pressure zone in sequence through several shielding protection structures, and by arranging heat dissipation fans, the electrical equipment inside the several isolated areas of the equipment placement area can achieve ventilation and heat dissipation based on the shared air duct, effectively reducing the number of required fans and improving the heat dissipation efficiency; the utility model provides a DC charging pile, which utilizes the above-mentioned shared air duct type heat dissipation cabinet to realize the sharing of the air inlet duct and the air outlet duct by the power module, the electrical input unit and the electrical output unit, simplifying the air duct structure, saving costs, and improving the heat dissipation efficiency; the utility model provides a shared air duct type heat dissipation cabinet and a DC charging pile, which solves the problem in the prior art that the direct ventilation duct structure requires the design of multiple special air duct structures, resulting in low heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a structural schematic diagram of a shared air duct heat dissipation cabinet in one embodiment of the present invention.

[0018] Figure 2 Shown is a structural schematic diagram of a DC charging pile in one embodiment of the present utility model.

[0019] Figure 3Shown is a structural schematic diagram of a DC charging pile in one embodiment of the present utility model.

[0020] Component number description

[0021] 1 Shared duct cooling cabinet

[0022] 11 Cooling fan

[0023] 12 air inlet

[0024] 13 Inlet low temperature zone

[0025] 14 Equipment placement area

[0026] 141 Isolation Area

[0027] 142 air inlet channel

[0028] 143 air outlet channel

[0029] 144 area air guide fan

[0030] 15 High temperature convergence area

[0031] 16 High temperature and high pressure area

[0032] 17 air outlet

[0033] 18 Waterproof and dustproof structure

[0034] 181 waterproof shutters

[0035] 182 filter cotton

[0036] 19 Shielding protection structure

[0037] 2 Power Module

[0038] 3 Electrical input unit

[0039] 4 electrical output units DETAILED DESCRIPTION

[0040] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0041] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model. Therefore, they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed by the utility model without affecting the efficacy and purpose that can be achieved by the utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terms used here are only for describing specific embodiments and are not intended to limit this application. Spatial-related terms, such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., may be used in the text to facilitate the description of the relationship between one element or feature shown in the figure and another element or feature.

[0042] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," "holding," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0043] Furthermore, as used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Thus, "A, B, or C" or "A, B, and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B, and C". Exceptions to this definition occur only when the combination of elements, functions, or operations is inherently mutually exclusive in some way.

[0044] In order to solve the problems in the above-mentioned background technology, the present invention provides a shared air duct heat dissipation cabinet and a DC charging pile, which aims to solve the problem of low heat dissipation efficiency caused by the need to design multiple specialized air duct structures for the direct air duct structure in the prior art. At the same time, in order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention are further described in detail through the following embodiments and in combination with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the invention.

[0045] like Figure 1 As shown, an embodiment of the present invention provides a shared duct heat dissipation cabinet 1. In this embodiment, the shared duct heat dissipation cabinet 1 is used to dissipate heat for a number of electrical devices arranged therein, including:

[0046] cooling fan 11;

[0047] The cabinet includes an inner cavity for accommodating the electrical equipment and the cooling fan 11, and an air inlet 12 and an air outlet 17 opposite to each other on the cabinet; the inner cavity is divided into an air inlet low-temperature zone 13, an equipment placement zone 14, a high-temperature convergence zone 15 and a high-temperature and high-pressure zone 16 from the air inlet 12 to the air outlet 17, and the equipment placement zone 14 is divided into a plurality of isolation areas 141 for accommodating the electrical equipment. A plurality of the electrical equipment is arranged in the corresponding isolation areas 141, and the plurality of isolation areas 141 are individually provided. An air inlet channel 142 connected to the low-temperature air inlet zone 13 and an air outlet channel 143 connected to the high-temperature convergence zone 15 are provided. The high-temperature convergence zone 15 and the high-temperature and high-pressure zone 16 are connected through a cooling fan 11. The cooling fan 11 forms a negative pressure on the air inlet side and a high pressure on the air outlet side, driving the cold air into the low-temperature air inlet zone 13 from the air inlet 12, and enters the equipment placement area 14 through the air inlet channel 142 to take away the heat from the electrical equipment and enter the high-temperature convergence zone 15, and then enters the high-temperature and high-pressure zone 16 and is discharged through the air outlet 17.

[0048] The purpose of the design of the utility model in this embodiment is that the heat dissipation fan 11 draws the hot air from the high-temperature convergence area 15 to the high-temperature and high-pressure area 16 by exhausting air, so that the air in the high-temperature convergence area 15 becomes less and forms a negative pressure, so that the cold air flows from the isolation areas 141 of the equipment placement area 14 to the high-temperature convergence area 15 based on the air pressure and takes away the heat from the electrical equipment; at the same time, the flow of air also makes the cold air outside the cabinet continuously enter the air inlet low-temperature area 13 through the air inlet 12 and enter the equipment placement area 14 through the air inlet channel 142 separately provided in each isolation area 141; secondly, the heat dissipation fan 11 draws the hot air from the high-temperature convergence area 15 to the high-temperature and high-pressure area 16 by exhausting air, so that the air in the high-temperature and high-pressure area 16 becomes more and forms a high pressure, so that the hot air is discharged from the cabinet from the air outlet 17 based on the air pressure. Therefore, the cooling fan 11 is used to make the cold air flow directionally in the cabinet based on the air pressure. On the basis of meeting the ventilation and heat dissipation requirements, since multiple isolation areas 141 share the air inlet 12, the low-temperature air inlet zone 13, the high-temperature convergence zone 15, the high-temperature and high-pressure zone 16 and the air outlet 17, not only the air duct structure is simplified, and there is no need to design a ventilation duct for each isolation area separately; the number of fans is reduced, saving costs; at the same time, based on the shared air duct, the utilization rate of the internal space of the cabinet is also effectively improved, and the pressure loss of the air duct is smaller; in addition, the hot air is discharged from the cabinet from the air outlet 17 based on the air pressure, and the direct heat dissipation of the hot air through the cabinet can also be reduced, effectively reducing the temperature rise of the cabinet and the high and low temperature impacts on the cabinet, thereby protecting the cabinet and extending the life of the cabinet protective layer.

[0049] In one embodiment, if Figure 1 As shown, one or more of the isolation areas 141 may include a regional air-guiding fan 144, and the regional air-guiding fan 144 of the isolation area 141 is arranged at the air inlet channel 142 position or the air outlet channel 143 position of the isolation area 141, and is used to form a negative pressure in the air inlet low-temperature zone 13, so that cold air enters the air inlet low-temperature zone 13 from the air inlet 12 from the outside of the cabinet based on air pressure; and sucks cold air from the air inlet low-temperature zone 13 into the isolation area 141 and discharges hot air to the high-temperature convergence area 15 to enhance ventilation and heat dissipation of the electrical equipment therein.

[0050] If the power of the electrical equipment in a certain isolation area 141 is relatively large and the ventilation and heat dissipation requirements are relatively high, a regional air guide fan 144 can be added at the air inlet duct 142 or the air outlet duct 143 of the isolation area 141. The purpose of the design of the utility model in this embodiment is that the regional air guide fan 144 draws cold air into the isolation area 141 and eventually discharges it to the high-temperature convergence area 15, thereby forcing the air to flow away the heat generated by the electrical equipment therein, thereby achieving the purpose of heat dissipation and cooling; and promotes the formation of negative pressure in the air inlet low-temperature zone 13. At this time, the cold air outside the cabinet continuously flows into the air inlet low-temperature zone 13 based on the air pressure, thereby enhancing the air flow in the cabinet and also enhancing the ventilation and heat dissipation effects in other isolation areas 141.

[0051] In one embodiment, the air volume of the cooling fan 11 is greater than the total air volume of the regional air guide fan 144, and the negative pressure of the high-temperature convergence area 15 is greater than the negative pressure of the air inlet low-temperature area 13, so that cold air continuously flows from the air inlet low-temperature area 13 into each of the isolation areas 141 based on air pressure, and hot air converges in the high-temperature convergence area 15.

[0052] The purpose of the design of the present invention in this embodiment is to achieve directional flow of air in the cabinet, improve the heat dissipation efficiency of the shared air duct type heat dissipation cabinet 1, reduce the demand for fans, save costs and improve energy utilization.

[0053] In one embodiment, if Figure 1 As shown, the cabinet further includes a waterproof and dustproof structure 18 for filtering dust and water droplets in the air to prevent them from entering the inner cavity.

[0054] The purpose of the design of the utility model in this embodiment is to prevent dust and water droplets in the air from entering the inner cavity through the waterproof and dustproof structure 18, protect the electrical equipment arranged in the inner cavity from being covered by dust so as not to affect the operation of the equipment and increase the cleaning cost, and prevent it from being corroded by rainwater to avoid danger.

[0055] In one embodiment, if Figure 1 As shown, the waterproof and dustproof structure 18 includes an air inlet protection structure arranged on the outside of the air inlet 12, and the air inlet protection structure includes a waterproof louver 181 and filter cotton 182.

[0056] When the shared duct cooling cabinet 1 is in operation, cold air continuously flows into the inner cavity. Especially in inclement weather such as wind and rain, adding a waterproof and dustproof structure 18 outside the air inlet 12 can effectively filter out dust and water droplets in the air and protect the electrical equipment therein. In a preferred embodiment, the filter cotton 182 can be appropriately added to enhance the filtering effect.

[0057] In one embodiment, if Figure 1 As shown, the waterproof and dustproof structure 18 includes an air outlet protection structure arranged outside the air outlet 17, and the air outlet protection structure includes a waterproof louver 181 and filter cotton 182.

[0058] When the shared duct cooling cabinet 1 is operating, the air outlet 17 primarily serves to exhaust hot air from the cabinet. At this time, the probability of air from outside the cabinet entering the inner cavity through the air outlet 17 is low. However, when the shared duct cooling cabinet 1 is not operating, especially in inclement weather such as wind and rain, it is necessary to add a waterproof and dustproof structure 18 to the outside of the air outlet 17. In a preferred embodiment, to minimize the impact on the ventilation and heat dissipation efficiency of the air outlet 17, the number of filter cotton 182 can be appropriately reduced.

[0059] In one embodiment, if Figure 1 As shown, the equipment placement area 14 is separated from the air inlet low-temperature area 13 and the high-temperature convergence area 15 by several shielding protection structures 19. The shielding protection structure 19 is used to protect the electrical equipment in the equipment placement area and prevent the hot air in the high-temperature convergence area 15 from reversely entering the air inlet low-temperature area 13 and forming an internal circulation of high-temperature air.

[0060] Among them, the shielding protection structure 19 has low thermal conductivity, so the high-temperature convergence area 15 is separated from other positions of the cabinet by the shielding protection structure 19, which can effectively prevent the high-temperature air in the high-temperature convergence area 15 from reversely entering the air inlet low-temperature area 13 to form an internal circulation, forcing the air in the air duct to flow in a set direction, thereby improving the heat dissipation efficiency of the shared air duct type heat dissipation cabinet 1.

[0061] In one embodiment, if Figure 1 As shown, each of the isolation areas 141 of the equipment placement area 14 is separated by a plurality of shielding protection structures 19. The shielding protection structures 19 are used to protect the electrical equipment in each of the isolation areas and isolate high-temperature air from flowing freely.

[0062] The purpose of the design of the present invention in this embodiment is to divide the equipment placement area 14 into several isolation areas 141 through a plurality of shielding protection structures 19, which can not only protect the electrical equipment inside the isolation area 141, but also isolate the high-temperature air from flowing arbitrarily in the set direction, prevent the hot air generated in this isolation area from interfering with other isolation areas, and prevent the hot air in other isolation areas from interfering with this isolation area.

[0063] like Figure 2 as well as Figure 3As shown, an embodiment of the present invention provides a DC charging pile. In this embodiment, the DC charging pile includes a shared air duct type heat dissipation cabinet 1, wherein the shared air duct type heat dissipation cabinet 1 can be any one of the shared air duct type heat dissipation cabinets 1 described above.

[0064] In one embodiment, if Figure 2 as well as Figure 3 As shown, the DC charging pile includes a power module 2, an electrical input unit 3 and an electrical output unit 4; wherein, the power module 2, the electrical input unit 3 and the electrical output unit 4 are arranged in several of the isolation areas 141 of the shared air duct type heat dissipation cabinet 1, and ventilation and heat dissipation are achieved through the shared air duct type heat dissipation cabinet 1.

[0065] In a specific embodiment, if Figure 2 As shown, the electrical equipment within the power module 2 has high power and requires high ventilation and heat dissipation. Therefore, a regional air guide fan 144 can be added to the air inlet or outlet of the power module 2. The total air volume of the regional air guide fan 144 is less than the air volume of the heat dissipation fan 11. The regional air guide fan 144 draws cold air into the power module 2, creating a negative pressure in the low-temperature air inlet zone 13. This forces cold air from outside the cabinet to continuously flow into the low-temperature air inlet zone 13 based on air pressure. This forced air flow removes heat generated by the electrical equipment and ultimately discharges it to the high-temperature convergence zone 15. The cooling fan 11 draws hot air from the high-temperature convergence zone 15 to the high-temperature, high-pressure zone 16 through exhaust, creating a negative pressure in the high-temperature convergence zone 15. Furthermore, because the total air volume of the regional air guide fans 144 is less than the air volume of the cooling fan 11, the negative pressure in the high-temperature convergence zone 15 is higher than the negative pressure in the low-temperature inlet zone 13. That is, the air pressure in the low-temperature inlet zone 13 is greater than the air pressure in the high-temperature convergence zone 15. Therefore, cold air also flows from the low-temperature inlet zone 13 into the power module 2 and then into the high-temperature convergence zone 15 based on air pressure. Furthermore, the cooling fan 11 draws air to create a high pressure in the high-temperature, high-pressure zone 16, causing the hot air to be discharged from the cabinet through the air outlet 17 based on air pressure.

[0066] Similarly, if Figure 2 as well as Figure 3 As shown, if the electrical equipment in the electrical input unit 3 and the electrical output unit 4 has a large power, a regional air guide fan 144 may be added. Otherwise, no additional fans are needed and air flow in the air duct can be achieved based on air pressure to support ventilation and heat dissipation.

[0067] The purpose of the design of the present invention in this embodiment is that the power module 2, the electrical input unit 3 and the electrical output unit 4 are based on the common air inlet 12, the low-temperature air inlet zone 13, the high-temperature convergence zone 15, the high-temperature and high-pressure zone 16 and the air outlet 17, which not only realizes ventilation and heat dissipation of each module or unit; but also simplifies the air duct structure, and there is no need to design a ventilation duct for each module or unit separately; at the same time, the number of fans is reduced, the cost is saved, and the utilization rate of the internal space of the cabinet is effectively improved, and the pressure loss of the air duct is smaller; in addition, the hot air is discharged from the cabinet of the DC charging pile from the air outlet 17 based on the air pressure, which can also reduce the direct heat dissipation of the hot air through the cabinet, effectively reduce the temperature rise of the cabinet, protect the cabinet, and extend the service life of the cabinet.

[0068] The DC charging pile provided in the above embodiment and the shared air duct type heat dissipation cabinet embodiment belong to the same concept. The specific implementation process is detailed in the shared air duct type heat dissipation cabinet embodiment and will not be repeated here.

[0069] In summary, the utility model provides a shared air duct heat dissipation cabinet, which uses a number of shielding and protective structures to divide the inner cavity of the heat dissipation cabinet from the air inlet to the relatively arranged air outlet into a low-temperature air inlet area, an equipment placement area, a high-temperature convergence area, and a high-temperature and high-pressure area. By setting a heat dissipation fan, the electrical equipment inside the several isolated areas of the equipment placement area can achieve ventilation and heat dissipation based on the shared air duct, effectively reducing the number of required fans and improving the heat dissipation efficiency. The utility model provides a DC charging pile, which utilizes the above-mentioned shared air duct heat dissipation cabinet to realize the power module, electrical input unit, and electrical output unit sharing the air inlet and outlet ducts, simplifying the air duct structure, saving costs, and improving the heat dissipation efficiency. The utility model provides a shared air duct heat dissipation cabinet and a DC charging pile, which solves the problem of low heat dissipation efficiency caused by the need to design multiple special air duct structures for the direct ventilation duct structure in the prior art. Therefore, the utility model effectively overcomes the various shortcomings of the prior art and has high industrial utilization value.

[0070] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A shared air duct type heat dissipation cabinet, used to dissipate heat for a number of electrical devices installed therein, characterized in that: include: Cooling fan (11); A cabinet, the cabinet comprising an inner cavity for accommodating the electrical equipment and the cooling fan (11), an air inlet (12) and an air outlet (17) opposite to each other opened on the cabinet; the inner cavity is divided into an air inlet low temperature zone (13), an equipment placement zone (14), a high temperature convergence zone (15) and a high temperature and high pressure zone (16) in sequence from the air inlet (12) to the air outlet (17); the equipment placement zone (14) is divided into a plurality of isolation zones (141) for accommodating the electrical equipment; a plurality of the electrical equipment is arranged in the corresponding isolation zones (141); and a plurality of the isolation zones (141) are each individually provided with An air inlet channel (142) connected to the air inlet low-temperature zone (13) and an air outlet channel (143) connected to the high-temperature convergence zone (15); the high-temperature convergence zone (15) and the high-temperature and high-pressure zone (16) are connected via a heat dissipation fan (11); the heat dissipation fan (11) forms a negative pressure on the air inlet side and a high pressure on the air outlet side, driving cold air to enter the air inlet low-temperature zone (13) from the air inlet (12), and enter the equipment placement area (14) through the air inlet channel (142) to take away the heat on the electrical equipment and enter the high-temperature convergence zone (15), and then enter the high-temperature and high-pressure zone (16) to be discharged through the air outlet (17).

2. The shared air duct type heat dissipation cabinet according to claim 1, characterized in that: One or more of the isolation areas (141) may include a regional air guide fan (144), and the regional air guide fan (144) of the isolation area (141) is arranged at the air inlet channel (142) or the air outlet channel (143) of the isolation area (141), and is used to form a negative pressure in the air inlet low-temperature zone (13), so that cold air enters the air inlet low-temperature zone (13) from the air inlet (12) outside the cabinet based on air pressure; and sucks cold air from the air inlet low-temperature zone (13) into the isolation area (141) and discharges hot air to the high-temperature convergence area (15) to enhance ventilation and heat dissipation of the electrical equipment therein.

3. The shared air duct type heat dissipation cabinet according to claim 2, characterized in that: The air volume of the heat dissipation fan (11) is greater than the total air volume of the regional air guide fan (144), and the negative pressure of the high-temperature convergence zone (15) is greater than the negative pressure of the air inlet low-temperature zone (13), so that cold air continuously flows from the air inlet low-temperature zone (13) into each of the isolation areas (141) based on air pressure, and hot air converges in the high-temperature convergence zone (15).

4. The shared air duct type heat dissipation cabinet according to claim 1, characterized in that: The cabinet also includes a waterproof and dustproof structure (18) for filtering dust and water droplets in the air to prevent them from entering the inner cavity.

5. The shared air duct type heat dissipation cabinet according to claim 4, characterized in that: The waterproof and dustproof structure (18) comprises an air inlet protection structure arranged outside the air inlet (12), and the air inlet protection structure comprises a waterproof louver (181) and filter cotton (182).

6. The shared air duct type heat dissipation cabinet according to claim 4, characterized in that: The waterproof and dustproof structure (18) comprises an air outlet protection structure arranged outside the air outlet (17), and the air outlet protection structure comprises a waterproof louver (181) and filter cotton (182).

7. The shared air duct type heat dissipation cabinet according to claim 1, characterized in that: The equipment placement area (14) is separated from the air inlet low-temperature area (13) and the high-temperature convergence area (15) by a plurality of shielding protection structures (19). The shielding protection structures (19) are used to protect the electrical equipment in the equipment placement area and prevent the hot air in the high-temperature convergence area (15) from reversely entering the air inlet low-temperature area (13) to form an internal circulation.

8. The shared air duct type heat dissipation cabinet according to claim 1, characterized in that: Each of the isolation areas (141) of the equipment placement area (14) is separated by a plurality of shielding protection structures (19), and the shielding protection structures (19) are used to protect the electrical equipment in each of the isolation areas and isolate the high-temperature air from flowing freely.

9. A DC charging pile, characterized in that: It comprises a shared air duct type heat dissipation cabinet (1) as claimed in any one of claims 1 to 8.

10. The DC charging pile according to claim 9, characterized in that: It comprises a power module (2), an electrical input unit (3) and an electrical output unit (4); The power module (2), the electrical input unit (3) and the electrical output unit (4) are arranged in a plurality of the isolation areas (141) of the shared air duct type heat dissipation cabinet (1), and ventilation and heat dissipation are achieved through the shared air duct type heat dissipation cabinet (1).

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