Inductor heat dissipation device and electric energy conversion device

Abstract

The utility model relates to an inductor heat dissipation device and an electric energy conversion device, and relates to the field of new energy electrical equipment. The utility model provides an inductor heat dissipation device which comprises at least one inductor, a shell and a sealing and filling material. The shell is detachably connected with an external cabinet body, a flow channel used for circulating cooling liquid is arranged in the shell, the shell is further provided with an installation cavity, a first opening and a second opening, the first opening and the second opening are communicated with the flow channel, and the installation cavity is used for containing at least one inductor; and the sealing and filling material is filled in the mounting cavity and is used for conducting heat. By arranging the shell with the flow channel and the sealing and filling material, efficient heat dissipation of the inductor is achieved, then the working environment temperature and the internal hot spot temperature of the inductor are reduced, and the long-term reliability is improved; and meanwhile, the shell is detachably connected with the cabinet body of the electric energy conversion device, and the surface of the cabinet body does not need to be perforated to reserve an air duct, so that the reliability problems of radiator blockage, fan aging and the like are avoided, and the invalidation problems of corrosion, insulation aging and the like in the cabinet body can also be avoided.

Description

Technical Field

[0001] The utility model relates to the field of new energy electrical equipment, and in particular to an inductive heat dissipation device and an electric energy conversion device. Background Art

[0002] At present, with the continuous development of the power industry, the working power of the power conversion device is getting larger and larger. In order to ensure the normal operation of the power conversion device, it is necessary to ensure that the inductor connected to the power conversion device is kept working in a low temperature environment, which places higher and higher requirements on the heat dissipation of the inductor in the power conversion device.

[0003] In the prior art, the heat dissipation solution for the inductor is mainly forced air cooling. The inductor is located at the air outlet of the electric energy conversion device. Cold air enters from the air inlet of the electric energy conversion device and dissipates the heat of the components in the electric energy conversion device before being discharged from the air outlet. The inductor located below the air outlet is also cooled by air.

[0004] The inventors have found that, first, holes need to be opened on the surface of the cabinet air duct of the external cabinet, which will cause abnormal conditions such as radiator fin blockage and fan aging in a severe dusty environment; secondly, the inductor is often located at the air outlet of the whole machine to achieve heat dissipation. The air temperature is relatively high, and the inductor will be affected by long-term high-temperature working conditions, which will affect its life and make it difficult to achieve a compact layout of the whole machine. Utility Model Content

[0005] The utility model aims to provide an inductor heat dissipation device and an electric energy conversion device, which can dissipate heat of the inductor efficiently and have a compact layout, and are easy to repair and maintain.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In the first aspect, the utility model proposes an inductor heat dissipation device, comprising at least one inductor, a shell and a sealing material; the shell is detachably connected to an external cabinet, the interior of the shell is provided with a flow channel for circulating a cooling liquid, the shell is also provided with an installation cavity and a first opening and a second opening connected to the flow channel, the installation cavity is used to accommodate the at least one inductor; the sealing material is filled in the installation cavity, and the sealing material is used for heat conduction.

[0008] Optionally, the shell includes a body and at least one end cover, and the body and the at least one end cover are detachably connected or integrally formed.

[0009] Optionally, the end cover comprises a first end cover and a second end cover respectively arranged at two ends of the body;

[0010] A first cavity is disposed inside the first end cover, a second cavity is disposed inside the second end cover, a third cavity is disposed inside the body, and the first cavity, the second cavity and the third cavity are connected to form the flow channel.

[0011] Optionally, the first opening and the second opening are both provided on the end cover; or

[0012] The first opening and the second opening are both arranged on the housing: or

[0013] The first opening is arranged on the end cover, and the second opening is arranged on the shell.

[0014] Optionally, water nozzles are also provided at the first opening and the second opening.

[0015] Optionally, a first mounting surface is provided on the housing, and a plurality of first mounting holes are provided on the first mounting surface;

[0016] The cabinet is provided with a second mounting surface, and the second mounting surface is provided with a plurality of second mounting holes;

[0017] The plurality of first mounting holes and the plurality of second mounting holes are arranged correspondingly, and the first mounting holes of the shell are detachably connected to the second mounting holes through a connecting piece.

[0018] Optionally, a positioning column is further provided on the first mounting surface, and a positioning hole corresponding to the positioning column is provided on the second mounting surface.

[0019] Optionally, a seal is further provided between the shell and the cabinet.

[0020] In a second aspect, the utility model provides an electric energy conversion device, comprising the inductive heat dissipation device described in any one of the above items and a cabinet, wherein the shell is detachably connected to the cabinet.

[0021] Optionally, the electric energy conversion device further comprises a plurality of connectors, and the at least one inductor is electrically connected to electronic components in the electric energy conversion device via the plurality of connectors.

[0022] The beneficial effects of the embodiments of the utility model are:

[0023] The inductor heat dissipation device is provided with a shell with a flow channel and a sealing material, so that the heat loss generated by the normal operation of the inductor is conducted to the various cooling surfaces of the inner wall of the shell through the sealing material, and then is taken away by the coolant flowing in the flow channel inside the shell, thereby realizing efficient heat dissipation of the inductor, thereby reducing the working environment temperature and internal hot spot temperature of the inductor, and improving long-term reliability; at the same time, the shell and the cabinet of the electric energy conversion device are detachably connected, and there is no need to open holes on the surface of the cabinet to reserve air ducts, thereby avoiding reliability problems such as radiator blockage and fan aging in harsh environments, and also avoiding failure problems such as corrosion and insulation aging in the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the structure of an inductor heat dissipation device without a sealing material according to an embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the housing of an embodiment of the utility model;

[0027] Figure 3 It is a schematic diagram of the structure of the main body of the embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the second end cover of an embodiment of the utility model;

[0029] Figure 5 It is a schematic structural diagram of an inductor heat dissipation device according to an embodiment of the utility model.

[0030] Icons: 100-inductor heat sink; 110-inductor; 111-connector; 120-sealing material; 130-housing; 131-first end cover; 132-second end cover; 1321-second connection port; 133-main body; 1331-third cavity; 1332-opening groove; 134-installation cavity; 135-first opening; 136-second opening; 137-first installation surface; 1371-first installation hole; 1372-positioning column; 1373-annular groove; 140-faucet; 150-seal. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the prior art, the heat dissipation solution for the inductor 110 is mainly forced air cooling. The inductor 110 is located at the air outlet of the electric energy conversion device. Cold air enters from the air inlet of the electric energy conversion device and dissipates the heat of the components in the electric energy conversion device before being discharged from the air outlet. The inductor 110 located below the air outlet is also cooled by air.

[0038] First, such a design requires opening holes on the surface of the cabinet air duct of the external cabinet, which may cause abnormal conditions such as radiator fin blockage and fan aging in a severe dusty environment; secondly, the inductor 110 is often located at the air outlet of the whole machine to achieve heat dissipation. The air temperature is relatively high, and the long-term high-temperature working conditions of the inductor 110 will affect the life of the inductor 110; forced air cooling has low heat dissipation efficiency, which reduces the power density of the inductor 110. As the power increases, the size also becomes larger, the sheet metal cost increases, and it is difficult to achieve a compact layout of the whole machine.

[0039] Therefore, the utility model proposes an electric energy conversion device, including an inductive heat sink 100 and a cabinet (not shown in the figure), and a housing 130 is detachably connected to the cabinet.

[0040] It is understandable that the electric energy conversion device does not need to open holes on the surface of the cabinet to reserve air ducts, so in harsh environments, reliability problems such as radiator blockage and fan aging will not occur, and failure problems such as corrosion and insulation aging in the cabinet can also be avoided.

[0041] In this embodiment, the electric energy conversion device includes a cabinet; the cabinet contains electronic components for electric energy conversion (not shown in the figure).

[0042] Optionally, a second mounting surface (not shown) is provided on the cabinet, and the second mounting surface is used for detachably installing the inductor cooling device 100; a plurality of second mounting holes are provided on the second mounting surface, and the plurality of second mounting holes are arranged corresponding to the plurality of first mounting holes 1371; the second mounting surface is also provided with connecting holes and positioning holes arranged corresponding to the positioning columns 1372.

[0043] Please refer to Figure 1 and Figure 5 In this embodiment, the electric energy conversion device includes a plurality of connectors 111 , and at least one inductor 110 is electrically connected to electronic components in the electric energy conversion device through the plurality of connectors 111 .

[0044] One end of the connector 111 is connected to the inductor 110 , and the other end thereof passes through the connection hole on the second mounting surface and is electrically connected to the electronic components in the cabinet.

[0045] In this embodiment, the electric energy conversion device includes an inductive heat dissipation device 100 .

[0046] Please refer to Figure 1 and Figure 5The utility model proposes an inductor heat dissipation device 100, comprising at least one inductor 110, a shell 130 and a sealing material 120; the shell 130 is detachably connected to an external cabinet, a flow channel for circulating a coolant is provided inside the shell 130, the shell 130 is further provided with an installation cavity 134 and a first opening 135 and a second opening 136 communicated with the flow channel, the installation cavity 134 is used to accommodate at least one inductor 110; the sealing material 120 is filled in the installation cavity 134, and the sealing material 120 is used for heat conduction.

[0047] It is understandable that after at least one inductor 110 is arranged in the mounting cavity 134 of the housing 130, the empty space in the mounting cavity 134 is filled with the potting material 120, so that the heat loss generated by the normal operation of the inductor 110 is conducted to the various cooling surfaces of the inner wall of the housing 130 through the potting material 120, and then taken away by the coolant flowing in the internal flow channel of the housing 130, thereby achieving efficient heat dissipation of the inductor 110, thereby reducing the working environment temperature and internal hot spot temperature of the inductor 110, and improving long-term reliability. In addition, the inductor heat dissipation device 100 improves the heat dissipation efficiency and power density of the inductor 110 by achieving efficient heat dissipation of the inductor 110, so it is more suitable for high-power electric energy conversion devices; at the same time, it can greatly reduce the overall volume of the inductor 110, which is more conducive to achieving a compact layout and is convenient for inspection and maintenance.

[0048] Please refer to Figure 1 In this embodiment, the inductor heat dissipation device 100 includes at least one inductor 110 , and the at least one inductor 110 is accommodated in the mounting cavity 134 .

[0049] Among them, since the inductor heat dissipation device 100 improves the heat dissipation efficiency and power density of the inductor 110, an inductor 110 with a smaller size and volume can be used, so that the overall volume of at least one inductor 110 is greatly reduced, which is more conducive to achieving a compact layout and facilitates inspection and maintenance.

[0050] In this embodiment, three inductors 110 are provided for illustration only, and the number of the inductors 110 may be one, two or more according to actual installation conditions.

[0051] Please refer to Figure 5 In this embodiment, the inductor heat dissipation device 100 includes a potting material 120 ; the potting material 120 is filled in the mounting cavity 134 , and the potting material 120 is used for heat conduction.

[0052] After the inductor 110 is installed in the installation cavity 134 of the housing 130 , the empty space of the installation cavity 134 is filled with a potting material 120 .

[0053] In this embodiment, the sealing material 120 is made of a material with thermal conductivity, such as a thermally conductive sealing glue.

[0054] Please refer to Figure 2-Figure 4 In this embodiment, the inductor heat dissipation device 100 includes a housing 130 .

[0055] Please refer to Figure 2 In this embodiment, the housing 130 includes a body 133 and a first end cover 131 and a second end cover 132 respectively disposed at both ends of the body 133. A first cavity (not shown) is disposed inside the first end cover 131, a first opening 135 is disposed on the first end cover 131, and a second opening 136 is disposed on the second end cover 132; a second cavity (not shown) is disposed inside the second end cover 132, the first opening 135 is communicated with the first cavity, and the second opening 136 is communicated with the second cavity.

[0056] Please refer to Figure 3 An open groove 1332 is provided on the main body 133, and a first end cover 131 and a second end cover 132 are sealed on both sides of the main body 133, so that the open groove 1332 forms a mounting cavity 134 with an opening on one side; at the same time, a third cavity 1331 is provided inside the main body 133, and the first cavity, the second cavity and the third cavity 1331 are connected to form a flow channel.

[0057] In this embodiment, please refer to Figure 3 , a plurality of third cavities 1331 are arranged along the interior of the body 133, and the plurality of third cavities 1331 are through cavities that cross both ends of the body 133. Figure 4 The first end cover 131 and the second end cover 132 have the same structure. The first end cover 131 is provided with a plurality of first connection ports (not shown) connected to the first cavity, and the second end cover 132 is provided with a plurality of second connection ports 1321 connected to the second cavity; one end of the plurality of third cavities 1331 is connected to the first cavity through the first connection port, and the other end is connected to the second cavity through the second connection port 1321, thereby forming a flow channel for the flow of coolant.

[0058] Of course, in other embodiments, the third cavity 1331 may also be a straight-line cavity or an S-shaped cavity. Therefore, the arrangement of the first cavity, the second cavity and the third cavity 1331 may be processed according to actual needs.

[0059] It is worth mentioning that the first opening 135 and the second opening 136 can be arranged in the same direction or in opposite directions. Figure 2 The first opening 135 and the second opening 136 are arranged in the same direction.

[0060] In this embodiment, please refer to Figure 2 A first mounting surface 137 is provided on the shell 130, and a plurality of first mounting holes 1371 are provided on the first mounting surface 137; wherein the first mounting surface 137 is provided on the shell 130 facing the open end, and the plurality of first mounting holes 1371 are provided correspondingly to the plurality of second mounting holes.

[0061] Please refer to Figure 2 A protruding positioning column 1372 is also provided on the first mounting surface 137 , that is, the first end cover 131 and the second end cover 132 forming the first mounting surface 137 are both provided with a positioning column 1372 .

[0062] Please refer to Figure 2 An annular groove 1373 for mounting the sealing member 150 is also provided on the first mounting surface 137 .

[0063] During installation, after the two positioning columns 1372 are simultaneously passed through the positioning holes on the second mounting surface, the multiple connecting parts are aligned and passed through the multiple second mounting holes and the multiple first mounting holes 1371 in sequence, and the multiple connecting parts are tightened at the same time to ensure that the shell 130 and the second mounting surface of the cabinet are firmly fixed.

[0064] The connecting piece may be a connecting piece with a threaded section such as a screw, a bolt, a stud and a set screw.

[0065] In this embodiment, please refer to Figure 1 A seal 150 is also provided between the first mounting surface 137 of the housing 130 and the second mounting surface of the cabinet. The seal 150 can ensure that the first mounting surface 137 of the housing 130 and the second mounting surface of the cabinet are in sealed contact to prevent air leakage.

[0066] In some optional embodiments, the housing 130 may further include a body and an end cover, wherein the body is provided with an open groove, and the body and the end cover are sealed and installed so that the open groove forms a mounting cavity with one side being open; wherein the body and the end cover are both provided with cavities, and the two cavities are connected to form a flow channel. The first opening 135 and the second opening 136 may be provided on the end cover or the body.

[0067] In some optional embodiments, the shell 130 may also include a body and an end cover. After the body with an open groove and the end cover are installed in the shell 130, the end cover is installed at the open end of the open groove, that is, the formed installation cavity is set inside the shell 130.

[0068] In this embodiment, please refer to Figure 1 A water nozzle 140 is also provided at the first opening 135 and the second opening 136 .

[0069] It is worth mentioning that the housing 130 and the end cover may be detachably connected or may be an integrally formed structure.

[0070] It is worth mentioning that the first opening 135 and the second opening 136 can be set according to actual conditions. In some optional embodiments, the first opening 135 and the second opening 136 can be both set on the end cover. In some optional embodiments, the first opening 135 and the second opening 136 can also be both set on the housing 130. In some optional embodiments, the first opening 135 is set on the end cover, and the second opening 136 is set on the housing 130.

[0071] The installation process of the inductor heat dissipation device 100 of this embodiment is as follows: first, the first end cap 131 and the second end cap 132 are respectively sealed on both sides of the body 133 to form the housing 130, and after the inductor 110 is installed in the installation cavity 134, the empty space of the installation cavity 134 is filled with the potting material 120. Secondly, the water nozzle 140 is fixed at the first opening 135 and the second opening 136, and the seal 150 is installed in the annular groove 1373. Finally, after the two positioning columns 1372 are simultaneously passed through the positioning holes on the second installation surface, the multiple connectors are aligned and sequentially passed through the multiple second installation holes and the multiple first installation holes 1371, and the multiple connectors are tightened at the same time to ensure that the housing 130 and the second installation surface of the cabinet are firmly fixed.

[0072] The working principle of the inductor heat dissipation device 100 of this embodiment is: when the inductor 110 is working, the heat loss generated by the normal operation of the inductor 110 is conducted to the various cooling surfaces of the inner wall of the shell 130 through the sealing material 120, and then is carried away by the coolant flowing in the internal flow channel of the shell 130, thereby achieving efficient heat dissipation of the inductor 110.

[0073] In summary, the inductor heat dissipation device 100 proposed in the utility model, by providing a shell 130 with a flow channel and a sealing material 120, allows the heat loss generated by the normal operation of the inductor 110 to be conducted to the various cooling surfaces of the inner wall of the shell 130 through the sealing material 120, and then be taken away by the coolant flowing in the internal flow channel of the shell 130, thereby achieving efficient heat dissipation of the inductor 110, thereby reducing the working environment temperature and internal hot spot temperature of the inductor 110, and improving long-term reliability; at the same time, the shell 130 is detachably connected to the cabinet of the electric energy conversion device, and there is no need to open holes on the surface of the cabinet to reserve air ducts, thereby avoiding reliability problems such as radiator blockage and fan aging in harsh environments, and also avoiding failure problems such as corrosion and insulation aging in the cabinet.

[0074] Furthermore, the inductor heat dissipation device 100 improves the heat dissipation efficiency and power density of the inductor 110 by achieving efficient heat dissipation of the inductor 110, and is therefore more suitable for high-power electric energy conversion devices; at the same time, it can greatly reduce the overall volume of the inductor 110, which is more conducive to achieving a compact layout and facilitates inspection and maintenance.

[0075] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An inductor heat dissipation device, characterized in that: include: at least one inductor; A housing, the housing being detachably connected to an external cabinet, the interior of the housing being provided with a flow channel for circulating a cooling liquid, the housing further being provided with an installation cavity and a first opening and a second opening communicating with the flow channel, the installation cavity being used to accommodate the at least one inductor; A sealing material is filled in the installation cavity, and the sealing material is used for heat conduction.

2. The inductor heat dissipation device according to claim 1, characterized in that: The shell comprises a body and at least one end cover, and the body and the at least one end cover are detachably connected or integrally formed.

3. The inductor heat dissipation device according to claim 2, characterized in that: The end cover comprises a first end cover and a second end cover respectively arranged at two ends of the body; A first cavity is disposed inside the first end cover, a second cavity is disposed inside the second end cover, a third cavity is disposed inside the body, and the first cavity, the second cavity and the third cavity are connected to form the flow channel.

4. The inductor heat dissipation device according to claim 2, characterized in that: The first opening and the second opening are both provided on the end cover; or The first opening and the second opening are both arranged on the housing: or The first opening is arranged on the end cover, and the second opening is arranged on the shell.

5. The inductor heat dissipation device according to claim 1, characterized in that: The first opening and the second opening are also provided with water nozzles.

6. The inductor heat dissipation device according to claim 1, characterized in that: The shell is provided with a first mounting surface, and the first mounting surface is provided with a plurality of first mounting holes; The cabinet is provided with a second mounting surface, and the second mounting surface is provided with a plurality of second mounting holes; The plurality of first mounting holes and the plurality of second mounting holes are arranged correspondingly, and the first mounting holes of the shell are detachably connected to the second mounting holes through a connecting piece.

7. The inductor heat dissipation device according to claim 6, characterized in that: The first mounting surface is also provided with a positioning post, and the second mounting surface is provided with a positioning hole corresponding to the positioning post.

8. The inductor heat dissipation device according to claim 1, characterized in that: A sealing member is also provided between the shell and the cabinet.

9. An electric energy conversion device, characterized in that: It comprises the inductor heat dissipation device and a cabinet as described in any one of claims 1 to 8, wherein the shell is detachably connected to the cabinet.

10. The electric energy conversion device according to claim 9, characterized in that: The electric energy conversion device further comprises a plurality of connectors, and the at least one inductor is electrically connected to the electronic components in the electric energy conversion device via the plurality of connectors.

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