Heat dissipation structure and power electronic equipment

Abstract

The utility model discloses a heat dissipation structure and a power electronic device, the heat dissipation structure comprises a fan support, a heat dissipation fan and a first electrical connection portion, the fan support is used for being arranged on the outer side of a device casing in a detachable mode; the cooling fan is arranged on the fan support and used for being matched with a radiator on the outer side of the equipment shell so as to achieve forced air cooling heat dissipation. The first electrical connection part is arranged on the fan bracket and is electrically connected with the cooling fan; when the fan support is installed at a preset assembly position on the outer side of the equipment shell, the first electrical connection part is just connected with a second electrical connection part on a control circuit in the equipment shell in place, and meanwhile the cooling fan is matched with the radiator in place. According to the heat dissipation structure, related electronic devices of the whole machine in the power electronic equipment do not need to be disassembled, and the electrical connection position does not need to be disassembled and assembled independently, so that the operation is very simple, and the convenience of disassembling, assembling and maintaining the heat dissipation fan on the power electronic equipment is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic device disassembly and maintenance technology, and more specifically, to a heat dissipation structure and a power electronic device. Background Technology

[0002] As the power of power electronic devices increases, forced air cooling is required for their heat dissipation areas. Taking inverters, one of the common power electronic devices, as an example, inverters often require external cooling fans to meet air cooling requirements. Since these fans are exposed to the natural environment, they are prone to failure, so they need to be inspected or replaced regularly.

[0003] However, the current process of disassembling and assembling fan modules is very inconvenient. It often requires disassembling related electronic components in the power electronics system in order to maintain the fan module. Moreover, the disassembly and maintenance work is very cumbersome, resulting in a poor user experience.

[0004] Therefore, how to solve the problem of inconvenient disassembly and maintenance of cooling fans on power electronic devices has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a heat dissipation structure and a power electronic device to solve the problem of inconvenient disassembly and maintenance of the cooling fan on the power electronic device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A heat dissipation structure, comprising:

[0008] Fan bracket, designed for detachable mounting on the outside of the equipment housing;

[0009] A cooling fan is mounted on the fan bracket and is used to cooperate with the heat sink on the outside of the device housing to achieve forced air cooling.

[0010] A first electrical connection part is disposed on the fan bracket and electrically connected to the cooling fan;

[0011] When the fan bracket is installed on the outside of the device housing to the preset assembly position, the first electrical connection part is connected to the second electrical connection part on the control circuit inside the device housing, and at the same time, the cooling fan and the heat sink are properly engaged.

[0012] Optionally, the fan bracket is detachably configured to slide on the outside of the device housing. When the fan bracket slides to the preset assembly position, the first electrical connection part is connected to the second electrical connection part on the control circuit inside the device housing, and the cooling fan and the heat sink are in place.

[0013] Optionally, the fan bracket is slidably connected to the outer side of the device housing, such that the fan bracket is slidably connected to the heat sink base plate of the radiator;

[0014] The fan bracket is provided with a sliding part, and the heat dissipation base plate is provided with a slide rail extending along the surface of the heat dissipation base plate. The sliding part and the slide rail form a sliding pair.

[0015] Optionally, the sliding part has a first end side and a second end side arranged opposite to each other in the extending direction of the slide rail, wherein the sliding part can only slide into the slide rail through one of the first end side and the second end side.

[0016] Optionally, the sliding structure formed by the sliding part and the two sides of the slide rail is arranged asymmetrically.

[0017] Optionally, the sliding part and the fan bracket are either an integral structure or a separate structure;

[0018] And / or, the slide rail and the heat dissipation substrate are an integral structure or a separate structure.

[0019] Optionally, the sliding direction of the sliding pair is the same as the axial direction of the air outlet surface of the cooling fan;

[0020] Alternatively, the sliding direction of the sliding pair is arranged at an angle to the axial direction of the air outlet surface of the cooling fan.

[0021] Optionally, the heat sink substrate is provided with a mounting opening through which the second electrical connection portion passes, and the second electrical connection portion and the mounting opening are sealed together by a second sealing ring.

[0022] Optionally, the heat dissipation substrate is provided with a first limiting part, and the fan bracket is provided with a second limiting part adapted to the first limiting part. When the fan bracket moves relative to the heat dissipation substrate to the preset assembly position, the first limiting part and the second limiting part cooperate to restrict the fan bracket from continuing to move.

[0023] Optionally, one of the first limiting part and the second limiting part is configured as a slot, and the other is configured as an elastic latch, and an audible indication is emitted the moment the slot and the elastic latch are engaged.

[0024] Optionally, it also includes a fixing component, which is used to fix the fan bracket to the outside of the device housing when the fan bracket slides relative to the device housing to a preset assembly position.

[0025] Optionally, the fixing component includes a locking screw for locking the fan bracket, which is in a preset assembly position, onto the heat sink base plate of the radiator.

[0026] Optionally, it also includes a heat dissipation cover. When the fan bracket is in the preset assembly position, the heat dissipation cover can cover the heat sink and the fan bracket. The heat dissipation cover is provided with an air inlet opening that matches the air inlet side of the fan bracket.

[0027] Optionally, it also includes a fan guard disposed on the air intake side of the cooling fan.

[0028] Optionally, the fan grille is disposed on the heat sink cover at the air inlet opening;

[0029] Alternatively, the fan guard may be disposed on the fan bracket on the air inlet side of the fan bracket.

[0030] Optionally, the connection method between the first electrical connection part and the second electrical connection part is configured as a plug-in connection, an abutment connection, or a flexible overlap connection.

[0031] Optionally, one of the first electrical connection portion and the second electrical connection portion is configured as a male plug-in terminal and the other as a female plug-in terminal, and the male plug-in terminal and the female plug-in terminal are inserted and mated to achieve electrical connection.

[0032] Optionally, a first sealing ring is provided on the male plug terminal and / or the female plug terminal to achieve joint sealing after the male plug terminal and the female plug terminal are inserted.

[0033] Compared to the background description, the aforementioned heat dissipation structure includes a fan bracket, a cooling fan, and a first electrical connection. The fan bracket is detachably mounted on the outside of the equipment housing. The cooling fan is mounted on the fan bracket and works in conjunction with a heat sink on the outside of the equipment housing to achieve forced air cooling. The first electrical connection is mounted on the fan bracket and is electrically connected to the cooling fan. When the fan bracket is installed on the outside of the equipment housing to a preset assembly position, the first electrical connection is precisely connected to the second electrical connection on the control circuit inside the equipment housing, and the cooling fan and heat sink are also properly engaged. In practical applications, when a cooling fan needs to be installed, it is mounted on a fan bracket. Alternatively, the cooling fan can be integrated with the fan bracket. Since the fan bracket is detachably mounted on the outside of the equipment housing, when it is installed in the preset mounting position, the first electrical connection of the cooling fan connects to the second electrical connection on the control circuit inside the equipment housing, and the cooling fan and heatsink cooperate. When the cooling fan needs to be removed, the fan bracket is gradually moved away from the preset mounting position. As the fan bracket moves further away, the first and second electrical connections disengage, and the cooling fan and heatsink detach from their mating positions. When the fan bracket is completely detached from the outside of the equipment housing, it is removed. If the cooling fan and fan bracket use a separate fixed connection structure, the cooling fan can be removed from the fan bracket. The above-mentioned heat dissipation structure allows for the disassembly, repair, and maintenance of the cooling fan without disassembling any related electronic components inside the power electronic equipment. The operation is also very simple. The electrical connection is completed simultaneously with the installation of the fan module consisting of the fan bracket and the cooling fan, eliminating the need for separate disassembly and assembly of the electrical connection points. This greatly improves the convenience of disassembling, assembling, and maintaining the cooling fan on the power electronic equipment.

[0034] In addition, this utility model also provides a power electronic device, including a heat dissipation structure, which includes at least one set of heat dissipation structures described in any of the above-mentioned solutions. Since the aforementioned heat dissipation structures have the above-mentioned technical effects, the power electronic device having this heat dissipation structure should also have the corresponding technical effects. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A schematic diagram of the axial structure of the fan module provided in an embodiment of this utility model;

[0037] Figure 2 An exploded view of the fan module provided in an embodiment of this utility model;

[0038] Figure 3 An exploded view of the heat dissipation structure provided in an embodiment of this utility model;

[0039] Figure 4 A schematic diagram of the axial structure of the heat dissipation structure provided in the embodiment of this utility model after the heat dissipation fan is assembled;

[0040] Figure 5 A cross-sectional view of the heat dissipation structure provided in the embodiment of this utility model after the heat dissipation fan is assembled.

[0041] Figure 6 This is a partial cross-sectional view of the assembly of the fan bracket and the heat sink substrate provided in an embodiment of the present invention.

[0042] in, Figures 1-6 middle:

[0043] Fan bracket 1, sliding part 11, second limiting part 12;

[0044] Radiator 2, heat dissipation base plate 21, slide rail 210, mounting opening 211, first limiting part 212, heat dissipation fins 22;

[0045] Cooling fan 3, fan guard 30;

[0046] First electrical connection part 4;

[0047] Fixed component 5;

[0048] Circuit board 6, second electrical connection part 61;

[0049] Heat sink cover 7, air inlet 71;

[0050] Second sealing ring 8;

[0051] Equipment casing 9. Detailed Implementation

[0052] The core of this utility model lies in providing a heat dissipation structure and power electronic equipment to solve the problem of inconvenient disassembly and maintenance of cooling fans on power electronic equipment.

[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0054] Reference Figures 1-6 As shown, this utility model specifically provides a heat dissipation structure, including a fan module, which specifically includes a fan bracket 1, a cooling fan 3, and a first electrical connection part 4.

[0055] The fan bracket 1 is detachably mounted on the outside of the equipment housing 9. For example, the fan bracket 1 can be detachably connected to the outer wall of the equipment housing 9, or it can be detachably and movablely connected to the heat dissipation base plate 21 of the heat sink 2 on the outside of the equipment housing 9. That is, the fan bracket 1 is movably connected to the heat dissipation base plate 21 and can be detached from the heat dissipation base plate 21. The cooling fan 3 is mounted on the fan bracket 1 and works with the heat sink 2 to achieve forced air cooling. It should be noted that the cooling fan 3 and the fan bracket 1 can be an integral structure or a separate fixed connection structure. The heat sink 2 generally includes a heat dissipation base plate 21 and heat dissipation fins 22. Specifically, the cooling fan 3 and the heat sink 2 can be arranged adjacent to or fitted to one side of the heat dissipation fins 22, so that when the cooling fan 3 rotates, the heat dissipation fins can be cooled. The airflow between the plates 22 is renewed, thereby achieving the purpose of forced air cooling of the heat sink 2; the first electrical connection part 4 is provided on the fan bracket 1 and is electrically connected to the cooling fan 3. It is mainly used to connect to the power supply electronic components, thereby energizing the cooling fan. The specific structural form of the first electrical connection part 4 on the fan bracket 1 can be, but is not limited to, one or a combination of at least two of the following fixing methods: snap-fit ​​fixing, screw fastening, ultrasonic welding, etc.; In addition, when the fan bracket 1 is installed on the outside of the equipment housing 9 to the preset assembly position, the first electrical connection part 4 and the second electrical connection part 61 connected to the control circuit (such as the circuit board 6) inside the equipment housing 9 are connected in place. The second electrical connection part 61 can be designed as an onboard structure or a non-onboard structure, and at the same time, the cooling fan 3 and the heat sink 2 are properly matched.

[0056] It should be noted that the above heat dissipation structure may have one fan module or multiple fan modules. When there are multiple fan modules, each fan module can be independently installed and removed from the outside of the device housing 9. The fan modules are structurally independent of each other and do not have connecting brackets.

[0057] In practical applications, when the cooling fan 3 needs to be installed, it is mounted on the fan bracket 1. Alternatively, the cooling fan 3 can be integrated with the fan bracket 1. Since the fan bracket 1 is detachably mounted on the outside of the equipment housing 9, when it is installed to the preset mounting position on the outside of the equipment housing 9, the first electrical connection 4 connected to the cooling fan 3 is connected to the second electrical connection 61 on the control circuit inside the equipment housing 9, and the cooling fan 3 and the heat sink 2 are also properly engaged. When the cooling fan 3 needs to be removed, the fan bracket 1 is gradually moved away from the preset mounting position. As the fan bracket 1 moves further away, the first electrical connection 4 and the second electrical connection 61 disengage, and the cooling fan 3 and the heat sink 2 also disengage from their mating positions. When the fan bracket 1 is completely detached from the outside of the equipment housing 9, it is removed from the equipment housing 9. If the cooling fan 3 and fan bracket 1 are connected in a separate fixed configuration, the cooling fan 3 can be removed from the fan bracket 1. The above-mentioned heat dissipation structure allows for the disassembly, repair, and maintenance of the cooling fan 3 without disassembling any related electronic components inside the power electronic equipment. The operation is also very simple. The electrical connection is completed simultaneously with the installation of the fan module consisting of the fan bracket 1 and the cooling fan 3, eliminating the need for separate disassembly and assembly of the electrical connection points. This greatly improves the convenience of disassembling and maintaining the cooling fan on the power electronic equipment.

[0058] It should be noted that those skilled in the art should be able to understand the basic structure and working principle of power electronic devices: refer to Figure 3 and Figure 4 The power electronic device includes a device housing 9, which houses electronic components such as circuit boards 6. The heat sink 2's heat dissipation substrate 21 is mainly used to dissipate heat from the relevant electronic components inside the device housing 9. Therefore, one side of the heat dissipation substrate 21 is located inside the device housing 9, and the other side is located outside the device housing 9. The side of the heat dissipation substrate 21 located outside the device housing 9 is cooled by air through a fan module.

[0059] In some specific implementation plans, refer to Figures 1-6As shown, the above-mentioned heat dissipation structure may also include a fixing component 5, and the detachable nature of the fan bracket 1 on the outside of the device housing 9 can be configured as a sliding connection structure. When the fan bracket 1 slides relative to the device housing 9 to the preset assembly position, the first electrical connection part 4 and the second electrical connection part 61 on the control circuit inside the device housing 9 are connected in place, and at the same time, the cooling fan 3 and the heat sink 2 are in place. At that time, the fixing component 5 can fix the fan bracket 1 to the outside of the device housing 9. By designing the heat dissipation structure in the above-mentioned structural form, the disassembly and fixing operations are more convenient. It should be noted that the above-mentioned fixing component 5 can specifically adopt a locking fastener, such as a bolt or nut that can be manually turned, or it can be designed as a buckle or other fixing method. Furthermore, the fixing position of the fan bracket 1 can be selected to be fixed on the outer wall of the device housing 9, or it can be designed on the heat sink 4, or on other components fixed relative to the outer wall of the device housing 9, such as the heat sink cover 7 mentioned below. In actual application, the arrangement can be selected according to actual needs, and no more specific limitations are made here. In addition, it should be noted that the detachable connection between the fan bracket 1 and the equipment housing 9 can be configured as a sliding connection or other movable connection structures, as long as it can be detachable, without further specific limitations.

[0060] In some other specific implementation schemes, refer to Figure 3 As shown, the sliding connection of the fan bracket 1 on the outside of the device housing 9 can be specifically configured as a sliding connection between the fan bracket 1 and the heat dissipation base plate 21 of the heat sink 2. Specifically, the fan bracket 1 can be provided with a sliding part 11, and the heat dissipation base plate 21 is provided with a slide rail 210 extending along the surface of the heat dissipation base plate 21. The sliding part 11 and the slide rail 210 form a sliding pair. By designing the fan bracket 1 and the heat dissipation base plate 21 in the above-mentioned sliding connection manner, the relative movement of the fan bracket 1 and the heat dissipation base plate 21 becomes more convenient, and it is easier to assemble and disassemble. It should be noted that the sliding part 11 and the fan bracket 1 can be designed as an integral structure or as a separate fixed connection structure. For example, the sliding part 11, which is independent of the fan bracket 1, can be fixed to the fan bracket 1 by fasteners. Similarly, the slide rail 210 and the heat dissipation base plate 21 can be designed as an integral structure or as a separate fixed connection structure. In practical applications, as long as the sliding connection between the two can be achieved, the configuration can be selected according to actual needs, and no more specific limitations are made here. In addition, it should be noted that the movable connection between the fan bracket 1 and the heat sink 21 can be configured as a sliding connection or other movable connection structures, as long as they can be relatively movable and detachable. No further specific limitations are made here.

[0061] In a further embodiment, the sliding part 11 has a first end side and a second end side arranged opposite to each other in the extending direction of the slide rail 210. In order to prevent mistaken insertion when assembling the fan bracket 1 and the heat sink 21, the sliding part 11 can be designed to slide into the slide rail 210 only through one of the first end side and the second end side. By designing it in this way, it is possible to avoid the fan bracket 1 being installed backwards, that is, to avoid the cooling fan 3 on the fan bracket 1 being installed backwards.

[0062] In a further embodiment, the specific structural form of the sliding engagement between the sliding part 11 and the slide rail 210 to achieve foolproofing can be that the sliding structures formed on both sides of the sliding part 11 and the slide rail 210 are designed in an asymmetrical arrangement. For example, the sliding engagement structure on the first side of the sliding part 11 and the sliding engagement structure on the second side of the sliding part 11 and the slide rail 210 are designed with different heights.

[0063] It should be noted that the sliding direction of the sliding pair formed by the sliding part 11 and the slide rail 210 can be designed to be the same as the axial direction of the air outlet surface of the cooling fan 3. By designing them to be the same direction, the axial direction of the air outlet surface of the cooling fan 3 becomes clearer, making it easier to arrange their relative positions with the corresponding structure of the heat sink 2. Of course, it is understood that the sliding direction of the sliding pair can also be designed to be at an angle to the axial direction of the air outlet surface of the cooling fan 3. In practical applications, the configuration can be selected according to specific needs, and no further specific limitations are made here.

[0064] In some specific implementation plans, refer to Figure 3 , Figure 5 and Figure 6 As shown, the aforementioned heat dissipation substrate 21 should also be provided with a mounting opening 211 through which the second electrical connection portion 61 passes. The second electrical connection portion 61 and the mounting opening 211 can be sealed together by a second sealing ring 8. By designing this second sealing ring 8, the inner side of the device housing 9 where the circuit board 6 is located can be sealed and isolated from the outer side of the device housing 9, effectively preventing the influence of harsh external environments on the internal electronic components of the device housing 9.

[0065] In some other specific implementation schemes, refer to Figure 5 and Figure 6 As shown, a first limiting part 212 is provided on the heat dissipation substrate 21, and a second limiting part 12 adapted to the first limiting part 212 is provided on the fan bracket 1. When the fan bracket 1 moves relative to the heat dissipation substrate 21 to a preset assembly position, the first limiting part 212 and the second limiting part 12 cooperate to restrict the fan bracket 1 from continuing to move. By designing the above-mentioned first limiting part 212 and second limiting part 12, it is possible to prevent the fan bracket 1 from moving too much relative to the heat dissipation substrate 21 and damaging the heat sink 2 or the cooling fan 3.

[0066] In a further embodiment, one of the first limiting part 212 and the second limiting part 12 can be configured as a slot, and the other can be configured as a flexible latch. An audible indication is emitted the instant the slot and the flexible latch engage. By designing the engagement method of the flexible latch and the slot, an audible indication is emitted when the first limiting part 212 and the second limiting part 12 are properly engaged. This audible indication is mainly the sound generated by the collision of the flexible latch and the slot. Through this audible indication, the user can promptly know that the relative movement position of the fan bracket 1 and the heat sink 21 has reached the preset assembly position.

[0067] In some other specific implementation schemes, refer to Figures 1-6 As shown, the aforementioned fixing component 5 may specifically include a locking screw, which is used to lock the fan bracket 1, which is in a preset assembly position, onto the heat sink 21. The fixing method using the locking screw makes the fixing operation very convenient. Specifically, the locking screw can be designed as a manually rotatable screw structure. It is understood that the above-described locking screw structure is merely an example of this embodiment of the invention. In actual applications, other fixing methods can be designed, such as pins, lugs, etc., without further specific limitations.

[0068] In some other specific implementation schemes, refer to Figure 3 and Figure 4 The aforementioned heat dissipation structure may further include a heat dissipation shell 7. When the fan bracket 1 is in the preset assembly position, the heat dissipation shell 7 can cover the heat sink 2 and the fan bracket 1. The heat dissipation shell 7 is provided with an air inlet opening 71 that matches the air inlet side of the fan bracket 1. Of course, it is understood that the heat dissipation shell 7 should also be provided with an air outlet opening. By designing this heat dissipation shell 7, on the one hand, it can provide a certain degree of protection for the heat sink 2 and the fan module; on the other hand, the heat dissipation shell 7 can guide the airflow, which is more conducive to the orderly circulation of airflow and helps to improve the uniformity of air cooling of the heat sink 2 by the cooling fan 3.

[0069] In some specific implementations, the above-mentioned heat dissipation structure may also include a fan grille 30 disposed on the air inlet side of the cooling fan 3. By designing the fan grille 30, it can remove dust and prevent debris from entering the heat dissipation air duct inside the cooling fan 3, thereby reducing the risk of blockage of the heat dissipation air duct.

[0070] It should be noted that the aforementioned fan grille 30 can be specifically installed on the heat sink 7 at the corresponding air inlet opening 71. Its specific installation method can be either an integral part of the heat sink 7 or a separate, fixed connection to the heat sink 7, for example, by fastening it to the heat sink 7. Alternatively, the fan grille 30 can also be installed on the fan bracket 1 at the corresponding air inlet side of the fan bracket 1. Again, its specific installation method can be either an integral part of the fan bracket 1 or a separate, fixed connection to the fan bracket 1, for example, by fastening it to the fan bracket 1. Preferably, the present invention designs the fan grille 30 as a separate connection to the heat sink 7 or the fan bracket 1, which facilitates disassembly and cleaning.

[0071] In some specific implementation schemes, the connection method of the first electrical connection part 4 and the second electrical connection part 61 can be configured as a plug-in connection, an abutment connection, or a flexible overlap (such as a spring clip overlap), or other methods. As long as the electrical connection between the two can be achieved, it is acceptable. In actual applications, the configuration can be selected according to actual needs, and no more specific limitations are made here.

[0072] In a further implementation, when the connection between the first electrical connection part 4 and the second electrical connection part 61 is configured as a plug-in connection, the specific structure can be that one of the first electrical connection part 4 and the second electrical connection part 61 is configured as a male plug-in terminal, and the other as a female plug-in terminal, with the male plug-in terminal and the female plug-in terminal plugging in to achieve electrical connection. By designing the above-mentioned plug-in connection, the electrical connection between the first electrical connection part 4 and the second electrical connection part 61 becomes more stable and reliable. It should be noted that the plug-in terminal corresponding to the second electrical connection part 61 can be designed as an on-board structure, that is, set on the circuit board 6; of course, it can also be designed as a separate plug-in terminal, but when designed as a separate plug-in terminal, the fixing of the plug-in terminal, the sealing between it and the heat sink 3, and the electrical connection between the tail of the plug-in terminal and the circuit board 6 need to be considered, and the structural design difficulty will be relatively greater.

[0073] In a further embodiment, to prevent the electrical performance of the male and female plug terminals from being affected by the external environment after they are inserted and mated, a first sealing ring can be provided on the end face of the male and / or female plug terminals where they are inserted and mated. The first sealing ring can seal the joint after the male and female plug terminals are inserted, thereby better ensuring the electrical connection performance.

[0074] In addition, this utility model also provides a power electronic device, including a heat dissipation structure, which includes at least one set of heat dissipation structures described in any of the above-mentioned solutions. Since the aforementioned heat dissipation structures have the above-mentioned technical effects, the power electronic device having this heat dissipation structure should also have the corresponding technical effects.

[0075] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0076] It should be understood that the use of "system," "device," and / or "unit" in this application is merely one method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0077] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0078] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0079] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0080] If a flowchart is used in this application, it is used to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed in exact order. Instead, the steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0081] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A heat dissipating structure, characterized by comprising: The application relates to a fan support (1) for detachably arranging on the outside of a device casing (9), a heat dissipation fan (3) arranged on the fan support (1) and used for cooperating with a radiator (2) on the outside of the device casing (9) to realize forced air cooling heat dissipation, a first electrical connection part (4) arranged on the fan support (1) and electrically connected with the heat dissipation fan (3), and a second electrical connection part (61) on a control circuit in the device casing (9). When the fan support (1) is mounted to a preset assembly position on the outside of the device casing (9), the first electrical connection part (4) is just connected with the second electrical connection part (61) on the control circuit in the device casing (9), and meanwhile the heat dissipation fan (3) is just cooperated with the radiator (2). The detachable arrangement of the fan support (1) on the outside of the device casing (9) is sliding connection, when the fan support (1) slides to the preset assembly position, the first electrical connection part (4) is just connected with the second electrical connection part (61) on the control circuit in the device casing (9), and meanwhile the heat dissipation fan (3) is just cooperated with the radiator (2). The sliding connection arrangement of the fan support (1) on the outside of the device casing (9) is that the fan support (1) is slidingly connected with a heat dissipation base plate (21) of the radiator (2). The fan support (1) is provided with a sliding part (11), the heat dissipation base plate (21) is provided with a sliding rail (210) arranged along the plate surface of the heat dissipation base plate (21), and the sliding part (11) and the sliding rail (210) form a pair of sliding pairs.

2. The heat dissipating structure according to claim 1, wherein The sliding part (11) has a first end side and a second end side in opposite arrangement in the extending direction of the sliding rail (210), wherein the sliding part (11) can only slide into the sliding rail (210) through one of the first end side and the second end side.

3. The heat dissipating structure according to claim 2, wherein The sliding part (11) and the sliding rail (210) are asymmetrically arranged in the sliding structure formed on the two sides of the sliding rail (210). The sliding part (11) and the fan support (1) are in an integrated structure or a split structure.

4. The heat dissipating structure according to claim 3, wherein The sliding rail (210) and the heat dissipation base plate (21) are in an integrated structure or a split structure.

5. The heat dissipating structure according to claim 4, wherein The sliding direction of the sliding pair is the same as the axis direction of the air outlet surface of the heat dissipation fan (3).

6. The heat dissipating structure according to claim 3, wherein Or, the sliding direction of the sliding pair is arranged at an angle with the axis direction of the air outlet surface of the heat dissipation fan (3). The heat dissipation base plate (21) is provided with a mounting opening (211) for the second electrical connection part (61) to pass through, and the second electrical connection part (61) is sealingly matched with the mounting opening (211) through a second sealing ring (8).

7. The heat dissipating structure according to claim 3, wherein ​ ​ 8. The heat dissipating structure according to claim 3, wherein ​ 9. The heat dissipating structure of claim 1, wherein The heat dissipation base plate (21) of the heat sink (2) is provided with a first limiting part (212), and the fan support (1) is provided with a second limiting part (12) matched with the first limiting part (212), when the fan support (1) is moved to the preset assembly position relative to the heat dissipation base plate (21), the first limiting part (212) cooperates with the second limiting part (12) to limit the continuous movement of the fan support (1).

10. The heat dissipating structure according to claim 9, wherein One of the first limiting part (212) and the second limiting part (12) is configured as a clamping groove, and the other is configured as an elastic clamping tongue, and the clamping groove and the elastic clamping tongue are clamped to complete the instant sound indication.

11. The heat dissipating structure of claim 2, wherein Further comprising a fixing assembly (5), when the fan support (1) is slid to the preset assembly position relative to the equipment shell (9), the fixing assembly (5) is used for fixing the fan support (1) on the outside of the equipment shell (9).

12. The heat dissipating structure according to claim 11, wherein The fixing assembly (5) comprises a locking screw, which is used for locking the fan support (1) in the preset assembly position on the heat dissipation base plate (21) of the heat sink (2).

13. The heat dissipating structure of claim 1, wherein Further comprising a heat dissipation cover (7), when the fan support (1) is in the preset assembly position, the heat dissipation cover (7) can cover the heat sink (2) and the fan support (1), and the heat dissipation cover (7) is provided with an air inlet opening (71) matched with the air inlet side of the fan support (1).

14. The heat dissipating structure according to claim 13, wherein Further comprising a fan mesh cover (30) arranged on the air inlet side of the heat dissipation fan (3).

15. The heat dissipating structure of claim 14, wherein, The fan mesh cover (30) is arranged on the heat dissipation cover (7) corresponding to the air inlet opening (71); Or, the fan mesh cover (30) is arranged on the fan support (1) corresponding to the air inlet side of the fan support (1).

16. The heat dissipating structure of claim 1, wherein The connection mode of the first electrical connection part (4) and the second electrical connection part (61) is configured as plug-in connection, abutting connection or elastic lapping.

17. The heat dissipating structure of claim 16, wherein One of the first electrical connection part (4) and the second electrical connection part (61) is configured as a male plug-in terminal, and the other is a female plug-in terminal, and the male plug-in terminal and the female plug-in terminal are plug-in matched to realize electrical connection.

18. The heat dissipating structure of claim 17, wherein, The male plug-in terminal and / or the female plug-in terminal is provided with a first sealing ring, so that the plug-in of the male plug-in terminal and the female plug-in terminal is completed to realize joint sealing.

19. A power electronic device comprising a heat spreading structure, characterized in that The heat dissipation structure comprises at least one set of heat dissipation structure according to any one of claims 1-18.

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