Heat dissipation assembly and power conversion equipment with same

Abstract

The utility model discloses a heat dissipation assembly and power conversion equipment, and the heat dissipation assembly comprises a box body and a first fan assembly, the box body is provided with a containing space, a power device is arranged in the containing space, the box body is configured to be a heat dissipation part, the first fan assembly is arranged in the containing space, and an air outlet of the first fan assembly is opposite to any plate body of the box body. Therefore, on one hand, the heat dissipation area of the heat dissipation piece is larger, the heat dissipation efficiency is higher, the first fan assembly directly blows the heat dissipation piece, the heat dissipation efficiency can be improved, the harsh heat dissipation requirement is met, the use of power conversion equipment with higher power density is met, on the other hand, the heat dissipation piece does not need to be independently arranged, the cost can be further reduced, and the cost is reduced. And the occupied space of the heat dissipation assembly is improved, so that the power conversion equipment is more compact, the occupied space is smaller, and the arrangement difficulty is lower.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchange, and in particular, to a heat dissipation assembly and a power conversion device having the same. Background Art

[0002] In the related art, power conversion devices such as inverters, rectifiers, and converters generally use air-cooled heat dissipation to dissipate heat from power devices such as capacitors, power boards, relays, inductors, and output boards provided therein.

[0003] However, with the increase in power density, more heat is generated inside the power conversion device, and the heat dissipation requirement increases. Due to the requirement of the layout space of the power conversion device, its own space layout is relatively compact. The existing air-cooled heat dissipation scheme is difficult to meet the heat dissipation requirement, resulting in serious heat accumulation in the power conversion device and potential safety hazards. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. For this purpose, an object of the present application is to provide a heat dissipation assembly, which can improve space occupation, has higher heat dissipation efficiency and better heat dissipation effect, can meet the heat dissipation requirement, and reduce potential safety hazards.

[0005] The present application further provides a power conversion device using the above heat dissipation assembly.

[0006] In a first aspect, the present application provides a heat dissipation assembly, including: a box body and a first fan assembly. The box body has an accommodation space, and power devices are arranged in the accommodation space. The box body is configured as a heat dissipation member. The first fan assembly is arranged in the accommodation space, and the air outlet of the first fan assembly faces any plate body of the box body.

[0007] According to the heat dissipation assembly of the embodiment of the present application, the box body is configured as a heat dissipation member, and the air outlet of the first fan assembly faces any plate body of the box body. On the one hand, the heat dissipation area of the heat dissipation member is larger, the heat dissipation efficiency is higher, and the first fan assembly blows directly on the heat dissipation member, which can improve the heat dissipation efficiency, meet more stringent heat dissipation requirements, and meet the use of power conversion devices with higher power density. On the other hand, there is no need to separately set a heat dissipation member, which can further reduce costs, improve the space occupation of the heat dissipation assembly, make the power conversion device more compact, occupy less space, and have lower layout difficulty.

[0008] According to some embodiments of the present application, the first fan assembly includes: a first mounting bracket and a first fan. The first mounting bracket is arranged in the accommodation space and defines a first air duct. The first fan is at least one and is arranged on the first mounting bracket.

[0009] In some embodiments, the first fan assembly is at least one.

[0010] According to some embodiments of the present application, the heat dissipation assembly further includes: a second fan assembly, the second fan assembly is disposed in the accommodation space, and the second fan of the second fan assembly is configured as a spoiler fan.

[0011] Further, the second fan assembly includes: a second mounting plate bracket and a second fan, the second mounting bracket is disposed in the accommodation space and defines a second air duct, the second fan is at least one and is disposed on the second mounting bracket.

[0012] Further, the second fan assembly is at least one.

[0013] In some embodiments, the heat dissipation assembly further includes: heat exchange fins, the heat exchange fins are disposed on one side of the box body facing the accommodation space and / or on one side away from the accommodation space.

[0014] Further, the heat exchange fins are integrally formed with the box body, or a heat conduction layer is provided between the heat exchange fins and the box body.

[0015] Further, at least a part of the heat exchange fins is opposite to the first fan assembly.

[0016] In a second aspect, the present application provides a power conversion device, including: a heat dissipation assembly and a power device, the power device is disposed in the box body of the heat dissipation assembly.

[0017] The additional aspects and advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0019] Figure 1 is a schematic diagram of a heat dissipation assembly according to a first embodiment of the present application;

[0020] Figure 2 is a schematic diagram of a heat dissipation assembly according to a second embodiment of the present application;

[0021] Figure 3 is a schematic diagram of a heat dissipation assembly according to a third embodiment of the present application;

[0022] Figure 4 is a schematic diagram of a heat dissipation assembly according to a fourth embodiment of the present application;

[0023] Figure 5 is a schematic diagram of a heat dissipation assembly according to a fifth embodiment of the present application;

[0024] Figure 6 is a schematic diagram of a heat dissipation assembly according to a sixth embodiment of the present application;

[0025] Figure 7 is a schematic diagram of a heat dissipation assembly according to the seventh embodiment of the present application;

[0026] Figure 8 is a schematic diagram of a heat dissipation assembly according to the eighth embodiment of the present application;

[0027] Figure 9 is a schematic diagram of a heat dissipation assembly according to the ninth embodiment of the present application.

[0028] Reference numerals:

[0029] Power conversion device 100,

[0030] Heat dissipation assembly 10, box body 11, heat exchange fins 111, first fan assembly 12, first mounting bracket 121, first fan 122, second fan assembly 13, second mounting bracket 131, second fan 132,

[0031] Power device 20,

[0032] Accommodation space a, first air duct b, second air duct c. Detailed implementation manners

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0034] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of the present application or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0035] Referring to "embodiment" in the present application means that the specific features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The phrase appears in various positions in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0036] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "joined", and "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] The term "and / or" in the present application is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the associated objects before and after.

[0038] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width, etc. of the integrated device, are only for illustrative purposes and should not constitute any limitation to the present application.

[0039] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0040] In the description of the present application, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them.

[0041] In the description of the present application, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature.

[0042] The "plurality" mentioned in the present application refers to two or more (including two).

[0043] It should be pointed out that the power conversion equipment can be a separate power device or motor controller such as a converter, inverter (photovoltaic inverter), relay, power device, etc. The above devices or modules are integrated in the box and can be fixed in a suitable position through the box. It can also be a power conversion device (such as an electric control box) that integrates multiple electronic control units such as an AC unit, relay and power device.

[0044] In the existing technology, the heat dissipation solution inside the cavity of the power conversion equipment is an air-cooling solution. As the power density increases, the heat inside the cavity also increases significantly. At the same time, the layout density of power devices (such as capacitors, inductors, etc.) inside the existing power conversion equipment is relatively high, and the remaining space inside the cavity is relatively cramped. The layout of the air-cooling solution is also difficult, and the fan arrangement of the air-cooling solution is difficult, resulting in the heat dissipation efficiency and heat dissipation effect of the existing air-cooling solution being difficult to meet the usage requirements.

[0045] Based on this, the present application proposes a heat dissipation assembly, which can use the box as a heat sink (i.e., a heat dissipation medium) to achieve air-cooling heat dissipation of the power devices in the box through heat exchange between the airflow in the accommodating space and the box. The heat exchange area of the box is larger, which can improve the heat exchange efficiency, and there is no need to set up a heat exchange component separately. It can also save space inside the box and reduce costs, and can further realize the compact layout of the power conversion equipment and reduce the difficulty of layout.

[0046] Reference below Figures 1 - 9 A heat dissipation assembly 10 and a power conversion device 100 according to an embodiment of the present application are described.

[0047] First, as Figure 1 As shown, the present application proposes a heat dissipation assembly 10 , comprising: a box 11 and a first fan assembly 12 .

[0048] The box 11 has a storage space a, the power device 20 is arranged in the storage space a, and the box 11 is configured as a heat sink. The first fan assembly 12 is arranged in the storage space a, and the air outlet of the first fan assembly 12 is opposite to any plate of the box 11.

[0049] Specifically, the box body 11 can have a bottom plate, a top plate and multiple side plates arranged around the top plate and the bottom plate. The top plate, the bottom plate and the side plates are any one of the multiple plates of the box body 11. The corresponding first fan assembly 12 can be arranged in the accommodating space a, such as: fixed on the bottom plate, fixed on the top plate or fixed on the side plate, and the first fan assembly 12 has an air inlet and an air outlet. The first fan assembly 12 is suitable for disturbing the airflow in the accommodating space a, so that the airflow in the accommodating space a flows from the air inlet into the first fan assembly 12, and directly acts on the plate body opposite to the air outlet (such as: top plate, bottom plate or side plate) through the air outlet, thereby realizing the function of configuring the box body 11 as a heat dissipation component.

[0050] It should be noted that when the first fan assembly 12 disturbs the air flow in the accommodation space a, the air inlet area of the first fan assembly 12 forms a negative pressure area, and the first fan assembly 12 can lead the air flow in the negative pressure area to the box body 11, and the box body 11 is configured as a heat dissipation member to dissipate heat through the box body 11 and the external environment. The box body 11 can be an integral sheet metal part or multiple spliced sheet metal plates. It has high thermal conductivity efficiency, and the heat transfer efficiency between multiple surfaces of the box body 11 is high. It can quickly disperse the heat to the entire box body 11 for heat dissipation. Not only is the heat exchange area larger and the heat exchange efficiency higher, which can improve the heat dissipation effect on the power device 20 and meet the heat dissipation requirements, but also there is no need to separately set a heat dissipation member, which can reduce costs, further improve the compactness of the power conversion device 100, reduce space occupation, increase power density, and reduce the layout difficulty.

[0051] It can be understood that in the embodiment where the box body 11 is configured as an integral sheet metal part, the box body 11 can be an integrally stamped part. In the embodiment where the box body 11 is configured as multiple spliced sheet metal plates, after the multiple sheet metal plates are separately stamped, they can be assembled and formed through assembly processes such as welding, plugging, riveting, and screwing.

[0052] According to the heat dissipation assembly 10 of the embodiment of the present application, the box body 11 is configured as a heat dissipation member, and the air outlet of the first fan assembly 12 faces any plate body of the box body 11. On the one hand, the heat dissipation area of the heat dissipation member is larger and the heat dissipation efficiency is higher, and the first fan assembly 12 blows directly on the heat dissipation member, which can improve the heat dissipation efficiency, meet more stringent heat dissipation requirements, and meet the use of the power conversion device 100 with a larger power density. On the other hand, there is no need to separately set a heat dissipation member, which can further reduce costs and improve the space occupation of the heat dissipation assembly 10, make the power conversion device 100 more compact, occupy less space, and have lower layout difficulty.

[0053] It should be noted that the box body 11 is configured as a heat dissipation member to increase the heat dissipation area and improve the heat dissipation efficiency. At the same time, a heat dissipation structure can be integrated on the box body 11 to further improve the heat dissipation efficiency, such as setting heat exchange fins to increase the heat dissipation area, or fitting an auxiliary heat dissipation structure on the box body 11. The auxiliary heat dissipation structure is configured as a phase change cooling structure, etc., to increase the temperature difference between the accommodation space a and the box body 11, thereby improving the heat dissipation efficiency. A thermal interface material can be set between the heat exchange fins and the auxiliary heat dissipation structure and the box body 11, such as: coating silicone grease, setting a thermal pad, etc.

[0054] It can be understood that Figures 1 - 9The black arrow indicates the air flow direction. A negative pressure is formed on the air intake side (i.e., the side where the air inlet is located) of the first fan assembly 12 to disturb the air flow and make the air flow to the air outlet side (i.e., the side where the air outlet is located). The air flow flowing out of the air outlet directly acts on the box body 11, and under the shielding effect of the box body 11, it flows to the periphery of the first fan assembly 12, which can further achieve flow disturbance and improve the gas flow velocity inside the accommodation space a to improve the heat exchange efficiency.

[0055] As Figures 1 - 6 shown, according to some embodiments of the present application, the first fan assembly 12 includes: a first mounting bracket 121 and a first fan 122. The first mounting bracket 121 is disposed in the accommodation space a and defines a first air duct b. The first fan 122 is at least one and is disposed on the first mounting bracket 121.

[0056] Specifically, the first mounting bracket 121 defines the first air duct b. One end of the first air duct b is formed with an air inlet, and one end is formed with an air outlet. The first fan 122 is disposed on the first mounting bracket 121, such as: detachably disposed on the first mounting bracket 121 by means of snap connection, screw connection or plug connection.

[0057] In this way, the first mounting bracket 121 provides an installation position for the first fan 122 and defines the first air duct b. At the same time, the first mounting bracket 121 is installed and fixed in the accommodation space a, such as fixed on the side plate, top plate or bottom plate of the box body 11, which can improve the layout stability and reliability of the first fan assembly 12 in the accommodation space a.

[0058] It should be noted that the first mounting bracket 121 can be a sheet metal bracket or a plastic bracket.

[0059] Among them, in some embodiments, the number of first fans 122 on one first mounting bracket 121 is one, and the corresponding first air duct b is also one. In other embodiments, the number of first fans 122 on the first mounting bracket 121 is multiple, and the first air duct b can also be one. Multiple first fans 122 share one first air duct b, or the first air duct b is also multiple, and the first air duct b corresponds to the first fan 122 one by one.

[0060] In some embodiments, the first fan assembly 12 is at least one.

[0061] See Figure 1 、 Figure 2 and Figure 3 shown, in the first embodiment, the second embodiment and the third embodiment, the number of the first fan assemblies 12 is one. See Figure 4 、 Figure 5 and Figure 6As shown, in the fourth, fifth, and sixth embodiments, the number of the first fan assemblies 12 is two.

[0062] That is to say, on the premise that the first fan assembly 12 can effectively improve the heat exchange efficiency and heat exchange effect of the heat dissipation assembly 10, two or more first fan assemblies 12 can be provided based on the heat exchange requirements and the size of the internal accommodation space a of the box body 11. According to the layout of the power devices 20, the first fan assembly 12 is provided at a suitable position, which can further improve the heat exchange efficiency of the heat dissipation assembly 10.

[0063] It can be understood that the heat generation amounts of multiple power devices 20 in the box body 11 can be arranged in order of magnitude, and the layout positions of the power devices 20 with larger heat generation amounts and the power devices 20 with smaller heat generation amounts are reasonably arranged so that the temperature inside the accommodation space a is relatively uniform. Furthermore, the first fan assembly 12 is arranged near the power device 20 with a larger heat generation amount, which can also further improve the heat dissipation efficiency and achieve targeted heat dissipation, thereby improving the heat dissipation effect.

[0064] As Figure 7 , Figure 8 and Figure 9 shown, according to some embodiments of the present application, the heat dissipation assembly 10 further includes: a second fan assembly 13, the second fan assembly 13 is arranged in the accommodation space a, and the second fan 132 of the second fan assembly 13 is configured as a turbulent flow fan.

[0065] That is to say, in the seventh, eighth, and ninth embodiments, a first fan assembly 12 and a second fan assembly 13 are arranged in the accommodation space a. The first fan assembly 12 is used to directly blow the box body 11 to achieve forced convection heat dissipation between the first fan assembly 12 and the box body 11, while the second fan 132 of the second fan assembly 13 is formed as a turbulent flow fan, which is used to perform turbulent flow in the accommodation space a to strengthen the self-heat exchange of the gas medium in the accommodation space a.

[0066] In this way, by setting the second fan 132, the gas flow in the accommodation space a is strengthened, the gas temperature uniformity in the accommodation space a is better, while local overheating is improved, and the gas fluidity is better, which can also further improve the heat exchange efficiency and heat exchange effect.

[0067] Wherein, when the box body 11 is configured as a sealed box body 11, the gas medium in the box body 11 can be an inert gas; when the box body 11 is a non-sealed box body 11, the gas medium can be air.

[0068] Combined with Figure 7 , Figure 8 and Figure 9As shown, further, the second fan assembly 13 includes: a second mounting plate bracket and a second fan 132. The second mounting bracket 131 is disposed in the accommodation space a and defines a second air duct c. The second fan 132 is at least one and is disposed on the second mounting bracket 131.

[0069] Specifically, the second mounting bracket 131 defines the second air duct c. One end of the second air duct c is formed with an air inlet, and one end is formed with an air outlet. The second fan 132 is disposed on the second mounting bracket 131, for example, detachably disposed on the second mounting bracket 131 in forms such as snap connection, screw connection, or plug connection.

[0070] In this way, the second mounting bracket 131 provides a mounting position for the second fan 132 and defines the second air duct c. At the same time, the second mounting bracket 131 is fixedly installed in the accommodation space a, such as fixed on the side plate, top plate, or bottom plate of the box body 11, which can improve the layout stability and reliability of the second fan assembly 13 in the accommodation space a.

[0071] It should be noted that the second mounting bracket 131 can be a sheet metal bracket or a plastic bracket.

[0072] Among them, in some embodiments, the number of second fans 132 on one second mounting bracket 131 is one, and the corresponding second air duct c is also one. In other embodiments, the number of second fans 132 on the second mounting bracket 131 is multiple, and the second air duct c can also be one. Multiple second fans 132 share one second air duct c, or the second air duct c is also multiple, and the second air duct c corresponds to the second fan 132 one by one.

[0073] Further, the second fan assembly 13 is at least one.

[0074] That is to say, the number of the second fan assemblies 13 can be one or more, and the number of the second fans 132 in the accommodation space a can also be one or more, so that the gas temperature in the accommodation space a is more uniform, the uniformity is better, the gas flow is more sufficient, and the heat exchange efficiency is higher.

[0075] Combined Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 On Figure 8 and Figure 9 As shown, in some embodiments, the heat dissipation assembly 10 further includes: heat exchange fins 111, and the heat exchange fins 111 are disposed on one side of the box body 11 facing the accommodation space a and / or on one side away from the accommodation space a.

[0076] Specifically, such as Figure 2 、 Figure 5 and Figure 8As shown, in the second embodiment, the fifth embodiment, and the eighth embodiment, the heat exchange fins 111 are provided on one side of the box body 11 facing the accommodation space a, such as Figure 3 , Figure 6 and Figure 9 shown, in the third embodiment, the sixth embodiment, and the ninth embodiment, the heat exchange fins 111 are provided on one side of the box body 11 away from the accommodation space a.

[0077] That is to say, heat exchange fins 111 can be provided on the box body 11 to increase the heat exchange area of the box body 11 and improve the heat exchange efficiency. In some embodiments, the heat exchange fins 111 are formed on one side of the box body 11 facing the accommodation space a, and in some other embodiments, the heat exchange fins 111 are formed on one side of the box body 11 away from the accommodation space a.

[0078] It should be noted that the box body 11 defines the accommodation space a, and the box body 11 has a side surface facing the accommodation space a, which can be defined as the inner surface, and the box body 11 also has a side surface away from the accommodation space a, which can be defined as the outer surface. In some embodiments, the heat exchange fins 111 can be provided on the inner surface, and in some other embodiments, the heat exchange fins 111 can be provided on the outer surface. Of course, the heat exchange fins 111 can also be provided on both the inner surface and the outer surface at the same time.

[0079] It can be understood that in the embodiments where the heat exchange fins 111 are provided on the inner surface, the heat absorption area of the box body 11 can be increased to quickly absorb the heat inside the accommodation space a into the box body 11, while in the embodiments where the heat exchange fins 111 are provided on the outer surface, the heat exchange area of the box body 11 can be increased to improve the heat exchange efficiency between the box body 11 and the external environment.

[0080] Of course, the installation position of the heat exchange fins 111 in the embodiments of the present application is not limited to this, and heat exchange fins 111 can also be provided on both the side of the box body 11 facing the accommodation space a and the side of the box body 11 away from the accommodation space a to increase the heat exchange area of the box body 11 through the heat exchange fins 111, thereby improving the heat exchange efficiency and heat exchange effect.

[0081] Furthermore, the heat exchange fins 111 are integrally formed with the box body 11, or a heat conduction layer is provided between the heat exchange fins 111 and the box body 11.

[0082] That is to say, in some embodiments, the heat exchange fins 111 are integrally formed with the box body 11 to improve the heat transfer effect between the heat exchange fins 111 and the box body 11 and improve the heat exchange efficiency. In some other embodiments, for the convenience of processing, the heat exchange fins 111 are detachably provided on the box body 11, and a heat conduction layer is provided between the box body 11 and the heat exchange fins 111. The heat conduction layer is the above-mentioned heat conduction interface material, such as: coating silicone grease, setting a heat conduction pad, etc.

[0083] In this way, the heat transfer effect between the heat exchange fins 111 and the box body 11 is better, so as to further improve the heat exchange efficiency.

[0084] In some embodiments, at least part of the heat exchange fins 111 faces the first fan assembly 12.

[0085] Exemplarily, at least part or all of the heat exchange fins 111 are located within the projection range of the first fan assembly 12 on the box body 11. This projection refers to: in the axial direction of the fan, the projection of the air outlet of the first fan assembly 12 on the nearest wall surface of the box body 11.

[0086] That is to say, heat exchange fins 111 can be provided on the top plate, side plates and bottom plate of the box body 11, or heat exchange fins 111 can be provided specifically on the plate body opposite to the first fan 122, and the heat exchange fins 111 are located in the area where the body is opposite to the first fan 122. By specifically arranging the heat exchange fins 111, while improving the heat exchange efficiency and heat exchange effect to meet the heat dissipation requirements, the cost of the heat dissipation assembly 10 can also be reduced.

[0087] As Figure 1 shown, in the first embodiment, a first fan assembly 12 is provided inside the box body 11, and cooling is achieved through the first fan assembly 12.

[0088] As Figure 2 shown, in the second embodiment, a first fan assembly 12 is provided inside the box body 11, and heat exchange fins 111 are also provided in the area inside the box body 11 opposite to the first fan assembly 12, so as to achieve combined cooling through the first fan assembly 12 and the heat exchange fins 111.

[0089] As Figure 3 shown, in the third embodiment, a first fan assembly 12 is provided inside the box body 11, and heat exchange fins 111 are also provided in the area outside the box body 11 opposite to the first fan assembly 12, so as to achieve combined cooling through the first fan assembly 12 and the heat exchange fins 111.

[0090] As Figure 4 shown, in the fourth embodiment, two first fan assemblies 12 are provided inside the box body 11, and cooling is achieved through the first fan assemblies 12.

[0091] As Figure 5 shown, in the fifth embodiment, two first fan assemblies 12 are provided inside the box body 11, and heat exchange fins 111 are also provided in the area inside the box body 11 opposite to the first fan assemblies 12, so as to achieve combined cooling through the first fan assemblies 12 and the heat exchange fins 111.

[0092] AsFigure 6 As shown, in the sixth embodiment, two first fan assemblies 12 are provided inside the box body 11, and heat exchange fins 111 are further provided in the area outside the box body 11 opposite to the first fan assemblies 12, so as to realize cooperative cooling through the first fan assemblies 12 and the heat exchange fins 111.

[0093] As Figure 7 shown, in the seventh embodiment, one first fan assembly 12 and one second fan assembly 13 are provided inside the box body 11, and cooling is realized through the first fan assembly 12 and the second fan assembly 13.

[0094] As Figure 8 shown, in the eighth embodiment, one first fan assembly 12 and one second fan assembly 13 are provided inside the box body 11, and heat exchange fins 111 are further provided in the area inside the box body 11 opposite to the first fan assembly 12, so as to realize cooperative cooling through the first fan assembly 12, the second fan assembly 13 and the heat exchange fins 111.

[0095] As Figure 9 shown, in the ninth embodiment, one first fan assembly 12 and one second fan assembly 13 are provided inside the box body 11, and heat exchange fins 111 are further provided in the area outside the box body 11 opposite to the first fan assembly 12, so as to realize cooperative cooling through the first fan assembly 12, the second fan assembly 13 and the heat exchange fins 111.

[0096] In a second aspect, the present application provides a power conversion device 100, including: a heat dissipation assembly 10 and a power device 20, and the power device 20 is disposed inside the box body 11 of the heat dissipation assembly 10.

[0097] According to the power conversion device 100 of the embodiment of the present application, by adopting the above heat dissipation assembly 10, direct cooling heat exchange between the box body 11 and the gas medium in the accommodation space a is realized to reduce the temperature of the gas medium in the accommodation space a, and the power device 20 exchanges heat with the gas medium to realize the cooling of the power device 20, thereby overall controlling the working environment temperature of the power device 20, enabling the power device 20 to work in a suitable working environment temperature, improving the working stability and reliability of the power conversion device 100, and reducing the cost of the power conversion device 100, making the space occupied by the power conversion device 100 lower and reducing the layout difficulty of the power conversion device 100.

[0098] Other configurations and operations of the power conversion device 100 according to the embodiments of the present application are known to those of ordinary skill in the art and will not be elaborated here.

[0099] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0100] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A heat dissipation assembly, characterized in that, Comprising: A box body (11), the box body (11) having an accommodation space (a), a power device (20) being disposed in the accommodation space (a), and the box body (11) being configured as a heat dissipation member; A first fan assembly (12), the first fan assembly (12) being disposed in the accommodation space (a), and an air outlet of the first fan assembly (12) being opposite to any plate body of the box body (11).

2. The heat dissipation assembly according to claim 1, characterized in that, The first fan assembly (12) includes: a first mounting bracket (121) and a first fan (122), the first mounting bracket (121) being disposed in the accommodation space (a) and defining a first air duct (b), the first fan (122) being at least one and being disposed on the first mounting bracket (121).

3. The heat dissipation assembly according to claim 1 or 2, characterized in that, The first fan assembly (12) is at least one.

4. The heat dissipation assembly according to claim 1, characterized in that, The heat dissipation assembly further includes: a second fan assembly (13), the second fan assembly (13) being disposed in the accommodation space (a), and a second fan (132) of the second fan assembly (13) being configured as a turbulent flow fan.

5. The heat dissipation assembly according to claim 4, wherein, The second fan assembly (13) includes: a second mounting bracket and a second fan (132), the second mounting bracket (131) being disposed in the accommodation space (a) and defining a second air duct (c), the second fan (132) being at least one and being disposed on the second mounting bracket (131).

6. The heat dissipation assembly according to claim 4 or 5, characterized in that, The second fan assembly (13) is at least one.

7. The heat dissipation assembly according to claim 1, wherein The heat dissipation assembly further includes: heat exchange fins (111), the heat exchange fins (111) being disposed on one side of the box body (11) facing the accommodation space (a) and / or on one side away from the accommodation space (a).

8. The heat dissipation assembly according to claim 7, characterized in that, The heat exchange fins (111) are integrally formed with the box body (11), or a heat conduction layer is provided between the heat exchange fins (111) and the box body (11).

9. The heat dissipation assembly according to claim 7, wherein At least a part of the heat exchange fins (111) is opposite to the first fan assembly (12).

10. A power conversion device, characterized in that, Comprising: The heat dissipation assembly according to any one of claims 1-9; A power device (20), the power device (20) being disposed in the box body (11) of the heat dissipation assembly.

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