Power device

Abstract

The utility model provides a power device comprising a box body which is provided with an accommodating cavity and a plurality of through holes, and the accommodating cavity is communicated with the plurality of through holes; the power assembly is arranged in the accommodating cavity, the power assembly comprises a power board and a plurality of modules, the plurality of modules are distributed on the power board and electrically connected with the power board, and the modules are arranged corresponding to the through holes; and the radiator is arranged on the outer side of the box body, is detachably connected with the box body, is located on the side where the through hole is located, and is used for radiating heat of the power assembly. According to the technical scheme provided by the utility model, the problem that the radiator of the inverter in the prior art is tedious to disassemble and assemble can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power devices, in particular to a power device. Background Art

[0002] At present, due to the demand for AC power in various scenarios, inverters with heat dissipation function are widely used in various electrical appliances such as air conditioning, lighting, and medical emergency. In actual on-site operation, in order to ensure the safe and stable operation of the equipment, it is often necessary to perform periodic maintenance and inspection on the heat sink installed inside the inverter.

[0003] When assembling an existing inverter, the heat sink needs to be fixed inside with screws first, and then the main power board assembly and other electronic components are gradually stacked and installed. This installation structure requires all components to be gradually removed before the heat sink can be maintained during each on-site maintenance inspection. The operation is very complicated and cumbersome, resulting in long disassembly and assembly time and a large amount of disassembly workload. Utility Model Content

[0004] The utility model provides a power device to solve the problem of complicated assembly and disassembly of the radiator of the inverter in the prior art.

[0005] The utility model provides a power device, which includes: a box body, having a housing cavity and a plurality of through holes, the housing cavity being connected to the plurality of through holes; a power component, which is arranged in the housing cavity, the power component including a power board and a plurality of modules, the plurality of modules being distributed on the power board and electrically connected to the power board, the modules being arranged corresponding to the through holes; a radiator, which is arranged on the outside of the box body and detachably connected to the box body, the radiator being located on the side where the through holes are located, and the radiator being used to dissipate heat for the power component. Through the above arrangement, the radiator is arranged separately on the outside of the box body, and when the radiator is installed and repaired, it is no longer necessary to disassemble the power components inside the box body one by one, which greatly reduces the disassembly time and workload of the device.

[0006] Furthermore, the power device further includes a heat-conducting layer, which is located between the module and the heat sink, with one side of the heat-conducting layer in contact with the heat sink, and the other side of the heat-conducting layer in contact with the module. Through the above arrangement, the heat generated by the module is transferred to the heat sink through the heat-conducting layer, thereby improving the efficiency of heat conduction from the module to the heat sink.

[0007] Furthermore, the radiator includes a connecting plate and a heat dissipation fin, one side of the connecting plate is detachably connected to the box, and the heat dissipation fin is fixed to the side of the connecting plate away from the module. Through the above arrangement, the heat dissipation fin and the box are easy to disassemble and assemble, and the heat can be transferred from the module to the heat dissipation fin more evenly and quickly, ensuring the heat dissipation effect.

[0008] Furthermore, the connecting plate has a plurality of protrusions on one side close to the box body, and the protrusions are arranged one by one corresponding to the through holes, and the protrusions are at least partially located in the through holes, and a heat conductive layer is arranged on each protrusion. Through the above arrangement, the gap between the power component and the heat sink can be reduced, thereby reducing the proportion of the air layer, and further improving the conduction efficiency of the heat generated by the module to the heat sink.

[0009] Furthermore, the box body includes a cover body, an outer plate and a bottom plate, the outer plate is located on one side of the bottom plate, the outer plate and the bottom plate form a receiving cavity, the through hole is arranged on the bottom plate, the side of the outer plate away from the bottom plate forms an opening, and the cover body is arranged at the opening. Through the above arrangement, when it is necessary to clean or replace the components in the receiving cavity, there is no need to disassemble the radiator, and the cover body can be opened or buckled, which is convenient to operate. And it can ensure the tightness of the assembly of the cover body and the outer plate to prevent water vapor or dust from entering the box body from the outside.

[0010] Furthermore, the power device also includes a first fastener, which is inserted through the bottom plate and the connecting plate to fix the radiator and the box. The above arrangement simplifies the installation process, making the installation and replacement of the radiator more convenient and quick, and does not require complicated disassembly and assembly tools, thereby reducing the subsequent maintenance costs.

[0011] Furthermore, the power device further comprises a second fastener, which is inserted through the power component and the bottom plate to fix the power component and the bottom plate. Through the above arrangement, a detachable connection between the power component and the bottom plate is achieved, which facilitates the disassembly and fixation of the power component.

[0012] Furthermore, the power device also includes a third fastener, which is inserted into the power board, the module and the bottom plate to fix the position of the module on the power board and the bottom plate. Through the above arrangement, the detachable connection of the power board, the module and the bottom plate is realized, the stability of the connection between the power board, the module and the bottom plate is ensured, and the disassembly is convenient. At the same time, the power component and the radiator do not have a direct fixed connection relationship, and when the power component and the radiator need to be disassembled, they can complete the disassembly steps independently without interfering with each other.

[0013] Furthermore, there are multiple heat dissipation fins, and the multiple heat dissipation fins are evenly distributed on the connecting plate. Some heat dissipation fins have avoidance parts, and the connecting plate is provided with connection holes, which are provided corresponding to the avoidance parts. The power device also includes a fourth fastener, which is passed through the connecting plate through the avoidance parts and the connection holes, and is connected to the base plate and the module. Through the above-mentioned arrangement, the base plate is fixed from one side toward the power component and the side toward the radiator, respectively, which improves the stability of the power component and the radiator for base plate assembly connection. At the same time, the flexibility of assembly between the components of the device is improved, and different connection relationships can be selected according to different demand scenarios.

[0014] Furthermore, multiple module arrays are distributed on the power board. Through the above arrangement, it is possible to ensure that there is a spacing between the modules, thereby preventing the heat concentration of the modules from causing the local temperature inside the box to be too high and causing component damage.

[0015] Furthermore, the power board has multiple rows of modules distributed along the width direction of the box, each row has multiple modules, and the modules of two adjacent rows are staggered. Through the above arrangement, the heat generated by the modules can be distributed more evenly to avoid local overheating. At the same time, the thermal interference between modules is reduced, which helps the independent heat dissipation of the modules and ensures the stability of the module operation.

[0016] By applying the technical solution of the utility model, the power component is arranged in the accommodating cavity of the box body, and the radiator is arranged on the outside of the box body and is detachably connected to the box body, so that the radiator can be inspected and maintained separately, and there is no need to remove the power component and other devices one by one, which shortens the disassembly time of the radiator and reduces the disassembly workload; and a plurality of through holes are also arranged on the box body, and the modules are arranged correspondingly to the through holes, and the radiator is also located on one side of the through holes. When the power device dissipates heat, the heat generated by the power component will be directly transferred to the radiator through the through holes on the box body, shortening the heat dissipation path, and hot air can flow in the through holes to avoid heat accumulation inside the box body. Through the above arrangement, there is no direct connection between the radiator and the power component, which simplifies the disassembly and assembly steps of the radiator. At the same time, the heat generated by the power component can be directly transferred to the radiator, which improves the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 The structure diagram of the power device provided in the first embodiment of the utility model is shown;

[0019] Figure 2 An exploded diagram of a power device provided in Embodiment 1 of the present utility model is shown;

[0020] Figure 3 A cross-sectional view of a power device provided in Embodiment 1 of the present utility model is shown;

[0021] Figure 4 A cross-sectional view of the power device provided by the first embodiment of the utility model from another perspective is shown;

[0022] Figure 5 A cross-sectional view of a power device provided by the second embodiment of the present utility model from another perspective is shown;

[0023] Figure 6 The schematic diagram of the structure of the heat sink provided in the second embodiment of the utility model is shown.

[0024] The above drawings include the following reference numerals:

[0025] 10. Box body; 101. Accommodating cavity; 11. Through hole; 12. Cover body; 13. External plate; 14. Bottom plate;

[0026] 20. Power component; 21. Power board; 22. Module;

[0027] 30. radiator; 31. connecting plate; 311. protrusion; 32. heat dissipation fin;

[0028] 40. Thermal conductive layer;

[0029] 60. A first fastener; 61. A first mounting hole;

[0030] 70. second fastener; 71. second mounting hole;

[0031] 80. a third fastener; 81. a third mounting hole;

[0032] 90. fourth fastener; 91. avoidance portion; 92. connection hole;

[0033] 100. Other electronic components. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0035] like Figure 1 and Figure 2As shown, the first embodiment of the utility model provides a power device, which includes a housing 10, a power component 20 and a heat sink 30. The housing 10 has a receiving cavity and a plurality of through holes 11, and the receiving cavity is connected to the plurality of through holes 11. The power component 20 is arranged in the receiving cavity, and the power component 20 includes a power board 21 and a plurality of modules 22. The plurality of modules 22 are distributed on the power board 21 and are electrically connected to the power board 21. The modules 22 are arranged corresponding to the through holes 11. The heat sink 30 is arranged on the outside of the housing 10, and is detachably connected to the housing 10. The heat sink 30 is located on the side where the through holes 11 are located, and the heat sink 30 is used to dissipate heat for the power component 20.

[0036] By applying the technical solution of the utility model, the power component 20 is arranged in the accommodating cavity of the box, and the radiator 30 is arranged on the outside of the box and is detachably connected to the box, so that the radiator 30 can be inspected and maintained separately, and there is no need to remove the power component 20 and other devices one by one, which shortens the disassembly time of the radiator 30 and reduces the disassembly workload; and a plurality of through holes 11 are also arranged on the box, and the modules are arranged correspondingly to the through holes 11, and the radiator 30 is also located on one side of the through holes 11. When the power device is dissipating heat, the heat generated by the power component 20 will be directly transferred to the radiator 30 through the through holes 11 on the box, shortening the heat dissipation path, and hot air can flow in the through holes 11 to avoid heat accumulation inside the box. Through the above arrangement, there is no direct connection between the radiator 30 and the power component 20, which simplifies the disassembly and assembly steps of the radiator 30, and at the same time, the heat generated by the power component 20 can be directly transferred to the radiator 30, which improves the heat dissipation efficiency.

[0037] like Figure 3 and Figure 4 As shown, the power device also includes a heat-conducting layer 40, which is located between the module 22 and the heat sink 30, one side of the heat-conducting layer 40 is in contact with the heat sink 30, and the other side of the heat-conducting layer 40 is in contact with the module 22. Through the above arrangement, the heat generated by the module 22 will be transferred to the heat sink 30 through the heat-conducting layer 40, thereby improving the efficiency of heat conduction from the module 22 to the heat sink 30. At the same time, the heat-conducting layer 40 can make the heat more evenly distributed on the contact surface between the module 22 and the heat sink 30, which helps to avoid local overheating of the module 22 and reduce the risk of performance degradation or damage to the module 22 due to uneven temperature. In the present application, the heat-conducting layer 40 can be set as a thermally conductive coating or a semi-solid thermally conductive material, such as thermally conductive silicone grease, a thermally conductive gasket, etc.

[0038] Furthermore, the radiator 30 includes a connecting plate 31 and a heat dissipation fin 32, one side of the connecting plate 31 is detachably connected to the housing 10, and the heat dissipation fin 32 is fixed to the side of the connecting plate 31 away from the module 22. In this way, the heat dissipation fin 32 and the housing 10 can be connected through the connecting plate 31, which is convenient for disassembly and assembly. The heat dissipation fin 32 is integrated on the connecting plate 31, so that heat can be transferred from the module 22 to the heat dissipation fin 32 more evenly and quickly, ensuring the heat dissipation effect. Among them, the connecting plate 31 and the heat dissipation fin 32 can be processed into an integral molding through a milling process, which can improve the structural strength while also improving the heat conduction efficiency.

[0039] Specifically, the side of the connecting plate 31 close to the box body 10 has a plurality of protrusions 311, and the protrusions 311 are arranged one by one corresponding to the through holes 11, and the protrusions 311 are at least partially located in the through holes 11, and a heat-conducting layer 40 is arranged on each protrusion 311. Through the cooperation between the protrusions 311 and the heat-conducting layer 40, the gap between the power component 20 and the heat sink 30 can be reduced, thereby reducing the proportion of the air layer, and further improving the efficiency of heat conduction from the module 22 to the heat sink. When the heat-conducting layer 40 is selected as a thermal conductive coating, the heat-conducting layer 40 can be directly applied to the surface of the protrusion 311, and the thickness of the protrusion 311 is processed thicker to match it to ensure a good thermal conductivity effect; when the heat-conducting layer 40 is set as a semi-solid thermal conductive material, it is connected to the surface of the protrusion 311 by bonding, and the thickness of the protrusion 311 can be set relatively thin. In the present application, the thickness of the protrusion 311 is not limited. The thickness of the protrusion 311 and the connection method with the heat-conducting layer 40 can be adjusted accordingly according to the type of material and thermal conductivity of the heat-conducting layer 40.

[0040] In another embodiment of the present application, the protrusion 311 can also protrude through the through hole 11 and contact the module 22. With this arrangement, the module 22 has no direct contact with the base plate 14, which can reduce the heat of the base plate 14 and prevent the base plate 14 from being too hot. At the same time, the protrusion 311 protrudes through the through hole 11, which facilitates the positioning and connection between the protrusion 311 and the through hole 11. At the same time, the position of the connecting plate 31 can also be limited by the protrusion 311 to prevent the connecting plate 31 and the base plate 14 from being displaced during the installation process, thereby improving the convenience and accuracy of the installation of the two.

[0041] In other embodiments, the connecting plate 31 may also be set as a plane structure, without the protrusion 311, and the heat-conducting layer 40 is set at a position on the connecting plate 31 corresponding to the module 22. Through the above-mentioned setting, the heat generated by the module 22 can be quickly and directly transferred to the entire connecting plate 31 through the heat-conducting layer 40. The plane structure is more conducive to the dispersion and transfer of heat on the connecting plate 31, and can also make the whole connecting plate 31 more evenly heated, avoiding local overheating at the position in contact with the module 22. At the same time, the connecting plate 31 is set as a plane structure, the processing technology is simpler, and the production cost can be reduced.

[0042] like Figure 2 As shown, the box body 10 includes a cover body 12, an outer plate 13 and a bottom plate 14. The outer plate 13 is located on one side of the bottom plate 14. The outer plate 13 and the bottom plate 14 form a receiving chamber 101. The through hole 11 is arranged on the bottom plate 14. The side of the outer plate 13 away from the bottom plate 14 forms an opening, and the cover body 12 is arranged at the opening. Through the above arrangement, when it is necessary to clean or replace the components in the receiving chamber 101, there is no need to disassemble the radiator 30. The cover body 12 can be opened or buckled, which is convenient to operate. Specifically, the cover body 12 and the outer plate 13 are connected by fasteners, so that the tightness of the assembly of the cover body 12 and the outer plate 13 can be ensured, and water vapor or dust can be prevented from entering the box body 10 from the outside and damaging the internal components. Specifically, there are other electronic components 100 in the receiving chamber 101, such as capacitors, protective components, etc.

[0043] like Figure 3 and Figure 4 As shown, the power device further includes a first fastener 60, which is inserted through the bottom plate 14 and the connecting plate 31 to fix the radiator 30 and the box body 10. The bottom plate 14 and the connecting plate 31 are provided with a first mounting hole 61 adapted to the first fastener 60 to facilitate the fixed connection between the bottom plate 14 and the connecting plate 31. Through the above arrangement, the installation process is simplified, making the installation and replacement of the radiator 30 more convenient and quick, and no complicated disassembly and assembly tools are required, thereby reducing the subsequent maintenance cost.

[0044] The power device further includes a second fastener 70, which is passed through the power component 20 and the bottom plate 14 to fix the power component 20 and the bottom plate 14. The bottom plate 14 and the power component 20 are provided with a second mounting hole 71 adapted to the second fastener 70 to facilitate the fixed connection between the bottom plate 14 and the power component 20. Specifically, the second fastener 70 is passed through the main power board 21 and the bottom plate 14 to fix the power component 20 inside the accommodating cavity 101, thereby realizing a detachable connection between the power component 20 and the bottom plate 14, and facilitating the installation and removal of the main power board 21 and the bottom plate 14.

[0045] Furthermore, the power device also includes a third fastener 80, which is inserted into the power board 21, the module 22 and the base plate 14 to fix the position of the module 22 on the power board 21 and the base plate 14. Specifically, the power board 21, the module 22 and the base plate 14 are provided with a third mounting hole 81 adapted to the third fastener 80, so as to facilitate the fixed connection of the power board 21, the module 22 and the base plate 14. Through the above arrangement, the detachable connection of the power board 21, the module 22 and the base plate 14 is realized, and the stability of the connection between the power board 21, the module 22 and the base plate 14 is further improved, and the disassembly is convenient. In addition, the power component 20 and the radiator 30 do not have a direct fixed connection relationship, and when the power component 20 and the radiator 30 need to be disassembled, they can not interfere with each other and independently complete the disassembly steps.

[0046] There are multiple heat dissipation fins 32, and the multiple heat dissipation fins 32 are evenly distributed on the connecting plate 31. Figure 5 and Figure 6 As shown, the second embodiment of the utility model provides a power device, which is different from the first embodiment in that part of the heat dissipation fins 32 have an avoidance portion 91, and a connecting hole 92 is provided on the connecting plate 31, and the connecting hole 92 is arranged corresponding to the avoidance portion 91. The power device also includes a fourth fastener 90, and the fourth fastener 90 is passed through the avoidance portion 91 and the connecting hole 92 on the connecting plate 31, and is connected to the base plate 14 and the module 22.

[0047] Partial tooth removal is performed at the connection hole 92 of the heat dissipation fin 32 to form an avoidance portion 91, which is convenient for the fourth fastener 90 to be inserted. Through the above arrangement, the bottom plate 14 is fixed from the side facing the power component 20 and the side facing the radiator 30, respectively, which improves the stability of the power component 20 and the radiator 30 for assembly and connection with the bottom plate 14. At the same time, the flexibility of assembly between the components of the device is improved, and different connection relationships can be selected according to different demand scenarios.

[0048] In this way, the staff can perform maintenance from one side of the radiator 30, which is flexible and convenient. Specifically, when the equipment is installed, the power board 21 is first connected to the bottom plate 14 inside the box 10 through the second fastener 70, and then the connecting plate 31 of the radiator 30 is fixed to the bottom plate 14 of the box 10 through the first fastener 60 outside the box 10. Finally, the fourth fastener 90 is extended into the inside of the radiator 32 through the avoidance portion 91 after the teeth of the radiator 32 are removed, and enters the connecting hole 92 to fix the connecting plate 31, the bottom plate 14 and the module 22. Such a setting can improve the stability of the assembly of the radiator 30 and the box 10 to ensure the tightness of the contact between the connecting plate 31 and the module 22, thereby further improving the heat dissipation effect of the radiator 30.

[0049] In the present application, the first fastener 60, the second fastener 70, the third fastener 80 and the fourth fastener 90 are all configured as screws, which are threadedly matched with the first mounting hole 61, the second mounting hole 71, the third mounting hole 81 and the connecting hole 92 to fix the position between the power component 20, the base plate 14 and the heat sink 30. The above-mentioned setting structure is simple, which improves the convenience of assembly and disassembly of each component. In other embodiments of the present application, the first fastener 60, the second fastener 70, the third fastener 80 and the fourth fastener 90 can also be configured as bolts, nuts or other fastening structures to cooperate with each other.

[0050] Through the above arrangement, the power component 20 and the radiator 30 do not have a direct fixed connection relationship. When the power component 20 and the radiator 30 need to be disassembled, they can complete the disassembly and assembly steps independently without interfering with each other. Among them, the size of the through hole 11 is slightly smaller than the size of the module 22. If the size of the through hole 11 is too large, external water vapor or impurities can easily enter the box through the through hole 11 to damage the module 22, and affect the fixing effect of the module 22 and the bottom plate 14; if the size of the through hole 11 is too small, it will lead to poor heat dissipation effect. In the present application, multiple first fasteners 60, second fasteners 70 and third fasteners 80 are provided.

[0051] like Figure 2 As shown, multiple modules 22 are distributed in an array on the power board 21. In this way, it is possible to ensure that there is a spacing between the modules 22, so as to avoid the heat concentration of the modules 22 causing the local temperature inside the box 10 to be too high and cause component damage. In addition, multiple modules 22 are distributed in an array, and the space in the accommodating cavity 101 in the box 10 is reasonably utilized, which facilitates the installation and maintenance of the modules 22. In other embodiments of the present application, multiple modules 22 can also be arranged in a polygonal, circular or random and disorderly manner on the power board 21, and the distribution of the modules 22 can be adjusted according to different application scenarios and different types of power components.

[0052] Furthermore, the power board 21 has multiple rows of modules 22 distributed along the width direction of the box body 10, each row has multiple modules 22, and the modules 22 in two adjacent rows are staggered. Through the above arrangement, the space utilization of the power board 21 is further improved, and more modules 22 can be placed. The heat generated by the modules 22 can also be distributed more evenly to avoid local overheating. At the same time, the thermal interference between the modules 22 is reduced, which helps the independent heat dissipation of the modules 22 and ensures the stability of the operation of the modules 22. The number of modules 22 and how they are arranged and distributed on the power board 21 are not limited in this application. Specifically, in this embodiment, seven modules 22 are arranged on the power board 21, which are divided into two upper rows and arranged in the middle of the power board 21, the first row is provided with three modules 22, and the second row is provided with four modules 22, and the upper and lower rows are staggered.

[0053] The technical solution provided by this application has the following advantages:

[0054] 1. The power components and the radiator are fixed in the accommodating cavity of the box and outside the box respectively. There is no direct fixed structure connection between the two, so the radiator can be installed and disassembled independently;

[0055] 2. Each component is fixedly connected by fasteners, which is easy to disassemble, and various types of power components and heat dissipation devices can be replaced, which improves the applicability of the equipment;

[0056] 3. On the premise of ensuring the normal assembly of each component, the convenience of power component and radiator maintenance is improved, which greatly shortens the maintenance time and workload.

[0057] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0059] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0060] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0061] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0062] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A power device, characterized in that: The power device comprises: A box body (10) having a containing cavity (101) and a plurality of through holes (11), wherein the containing cavity (101) is in communication with the plurality of through holes (11); A power component (20) is arranged in the accommodating cavity (101), the power component (20) comprising a power board (21) and a plurality of modules (22), the plurality of modules (22) are distributed on the power board (21) and are electrically connected to the power board (21), and the modules (22) are arranged corresponding to the through holes (11); A radiator (30) is arranged on the outside of the box (10) and is detachably connected to the box (10); the radiator (30) is located on the side where the through hole (11) is located; and the radiator (30) is used to dissipate heat from the power component (20).

2. The power device according to claim 1, characterized in that: The power device further comprises a heat conducting layer (40), wherein the heat conducting layer (40) is located between the module (22) and the heat sink (30), one side of the heat conducting layer (40) is in contact with the heat sink (30), and the other side of the heat conducting layer (40) is in contact with the module (22).

3. The power device according to claim 2, characterized in that: The heat sink (30) comprises a connecting plate (31) and heat dissipation fins (32); one side of the connecting plate (31) is detachably connected to the box body (10); and the heat dissipation fins (32) are fixed to a side of the connecting plate (31) away from the module (22).

4. The power device according to claim 3, characterized in that: The connecting plate (31) has a plurality of protrusions (311) on one side close to the box body (10); the protrusions (311) are arranged in one-to-one correspondence with the through holes (11); at least a portion of the protrusions (311) are located in the through holes (11); and the heat conducting layer (40) is arranged on each of the protrusions (311).

5. The power device according to claim 3, characterized in that: The box body (10) comprises a cover body (12), an outer plate (13) and a bottom plate (14); the outer plate (13) is located on one side of the bottom plate (14); the outer plate (13) and the bottom plate (14) form the accommodating cavity (101); the through hole (11) is arranged on the bottom plate (14); an opening is formed on a side of the outer plate (13) away from the bottom plate (14); and the cover body (12) is arranged to cover the opening.

6. The power device according to claim 5, characterized in that: The power device further comprises a first fastener (60), wherein the first fastener (60) is passed through the bottom plate (14) and the connecting plate (31) to fix the heat sink (30) and the box body (10).

7. The power device according to claim 5, characterized in that: The power device further comprises a second fastener (70), wherein the second fastener (70) is passed through the power component (20) and the base plate (14) to fix the power component (20) and the base plate (14).

8. The power device according to claim 5, characterized in that: The power device further comprises a third fastener (80), wherein the third fastener (80) is passed through the power board (21), the module (22) and the base plate (14) to fix the position of the module (22) on the power board (21) and the base plate (14).

9. The power device according to claim 5, characterized in that: The heat dissipation fins (32) are provided in plurality, and the plurality of heat dissipation fins (32) are evenly distributed on the connection plate (31); some of the heat dissipation fins (32) have avoidance portions (91); the connection plate (31) is provided with connection holes (92); the connection holes (92) are arranged corresponding to the avoidance portions (91); the power device further comprises a fourth fastener (90); the fourth fastener (90) is passed through the avoidance portions (91) and the connection holes (92) and is arranged on the connection plate (31), and is connected to the base plate (14) and the module (22).

10. The power device according to claim 1, characterized in that: A plurality of modules (22) are distributed in an array on the power board (21).

11. The power device according to claim 9, characterized in that: The power panel (21) has multiple rows of modules (22) distributed along the width direction of the box body (10), each row has multiple modules (22), and the modules (22) in two adjacent rows are staggered.

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