Power module fixing structure and power equipment

Abstract

The utility model relates to the technical field of power equipment, in particular to a power module fixing structure and power device.The power module fixing structure comprises a power module, a movable support and a mounting table which are mounted in a cabinet, the mounting table is fixedly connected with the cabinet, one end of the movable support is fixedly connected with the mounting table, and the other end of the movable support is connected through a driving assembly; the movable bracket acts on the power module; in an initial state, the movable support is separated from the power module, and the driving assembly is driven to enable the movable support to press the power module. Compared with the prior art, contact and separation with the power module are achieved through movement of the movable support, the phenomenon that the connection position of the power module and the cabinet is loosened or displaced in the high-strength swing and vibration environment is prevented, and therefore the operation stability of the power equipment is improved; and the fault occurrence probability caused by the fixation problem of the power module is reduced, so that the service life of the power equipment is prolonged.

Description

Technical Field

[0001] This application relates to the field of power equipment technology, and in particular to a power module fixing structure and a power device. Background Technology

[0002] With the continuous development of technology, large equipment such as ships and tunnel boring machines are being used more and more widely in modern industry. As a core component of these machines, power equipment is also increasing in number and complexity. However, these large machines typically operate in environments with high-intensity swaying and vibration, and the power equipment will also sway or vibrate accordingly. Over time, this can lead to loosening or breakage at the connection between the power modules and the cabinet, thereby reducing the operational stability and service life of the power equipment. Utility Model Content

[0003] This application provides a power module fixing structure and power device to solve the technical problem in the prior art where the fixing structure of the power module becomes loose or breaks during long-term operation in a high-intensity swaying and vibration working environment, thereby reducing the operational stability and service life of the power device.

[0004] In a first aspect, this application proposes a power module fixing structure, including: a power module installed in a cabinet, a movable bracket and a mounting platform, wherein the mounting platform is fixedly connected to the cabinet, one end of the movable bracket is fixedly connected to the mounting platform and the other end is connected through a drive component, and the movable bracket acts on the power module; in the initial state, the movable bracket is separated from the power module, and driving the drive component can cause the movable bracket to press the power module.

[0005] Furthermore, the movable bracket includes: a mounting part, a deformable part, and a movable part. The mounting part is fixedly connected to the mounting platform. One end of the deformable part is connected to the mounting part, and the other end is connected to the movable part. The driving component drives the deformable part to elastically deform in the direction of the power module, so that the movable part presses against the power module.

[0006] Furthermore, the drive assembly includes a drive member and a locking member. The locking member is mounted on the mounting platform, the drive member is movably inserted through the locking member, and the locking member locks the drive member when the drive member stops operating. The free end of the drive member abuts against the movable part.

[0007] Furthermore, the movable part is a pressure plate, which is mounted on top of the power module, and a flexible structure is laid on the pressure plate.

[0008] Furthermore, the drive assembly also includes an elastic element, which is sleeved on the drive component. One end of the elastic element abuts against the operating end of the drive component, and the other end of the elastic element abuts against the mounting platform.

[0009] Furthermore, the power module fixing structure also includes a buffer, which is disposed between the elastic element and the operating end of the drive element.

[0010] Secondly, this application proposes a power device, including at least one power module fixing structure, cabinet and fastening components as described in the first aspect, wherein the cabinet has an accommodating space, the power module fixing structure and the fastening components are both assembled in the accommodating space, and the power module fixing structure and the fastening components act on the power module to stabilize the power module in the accommodating space.

[0011] Furthermore, the fastening assembly includes: a first mounting base and a first fastener. The first mounting base is mounted above the accommodating space. The first mounting base is provided with a first through hole. The power module is provided with a second through hole corresponding to the position of the first through hole. The first fastener passes through the first through hole and the second through hole in sequence so that the power module is securely placed in the accommodating space.

[0012] Furthermore, the fastening assembly also includes: a second mounting base and a second fastener. The second mounting base is mounted below the accommodating space. The second mounting base is provided with a third through hole. The power module is provided with a fourth through hole corresponding to the position of the third through hole. The second fastener passes through the third through hole and the fourth through hole in sequence so that the power module is securely placed in the accommodating space.

[0013] Furthermore, the diameter of the first through hole is the same as the diameter of the second through hole, and the diameter of the third through hole is the same as the diameter of the fourth through hole.

[0014] The technical solutions provided in this application have the following advantages compared with the prior art:

[0015] Compared with the prior art, the power module fixing structure proposed in this application achieves contact and separation with the power module through the movement of the movable bracket, preventing the power module from becoming loose or displaced at the connection with the cabinet under high-intensity swaying and vibration environments. This improves the operational stability of the power equipment, reduces the probability of failure caused by power module fixing problems, and extends the service life of the power equipment. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0019] Figure 1 This is a schematic diagram of a power module fixing structure and a power module in a compressed state, provided in an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of a power module fixing structure and a power module in a separated state, provided in an embodiment of this application.

[0021] Figure 3 This is a schematic diagram of the overall structure of a power device provided in an embodiment of this application;

[0022] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 for Figure 3 Enlarged structural diagram at point B.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Power module fixing structure; 11. Movable bracket; 111. Mounting part; 112. Deformation part; 113. Movable part; 114. Flexible structure; 12. Mounting platform; 13. Drive assembly; 131. Drive component; 132. Locking component; 133. Elastic component; 134. Buffer component;

[0026] 20. Power module; 21. Second through hole; 22. Fourth through hole;

[0027] 30. Server rack; 31. Storage space;

[0028] 40. Fastening assembly; 41. First mounting base; 411. First through hole; 42. First fastener; 43. Second mounting base; 431. Third through hole; 44. Second fastener. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0031] For ease of description, spatial relative terms may be used in the text to describe the relative positional relationship or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or movement change, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0032] To address the technical problems of low operational stability and short service life of power devices in the prior art, this application provides a power module fixing structure and its power device to ensure that the power module is stably mounted in the cabinet under high-intensity swaying and vibration environments.

[0033] Firstly, please refer to Figures 1 to 2This application proposes a power module fixing structure, including: a power module 20 installed in a cabinet 30, a movable bracket 11 and a mounting platform 12. The mounting platform 12 is fixedly connected to the cabinet 30. One end of the movable bracket 11 is fixedly connected to the mounting platform 12, and the other end is connected through a drive assembly 13. The movable bracket 11 acts on the power module 20. In the initial state, the movable bracket 11 is separated from the power module 20. Driving the drive assembly 13 can cause the movable bracket 11 to press the power module 20.

[0034] Specifically, in the power module fixing structure 10, the mounting platform 12 is rigidly connected to the base plate or side wall of the cabinet 30 by bolts (or welding, snap-fit, or other connection methods). The movable bracket 11 is a metal elastic element 133, one end of which is installed on the upper surface or side of the mounting platform 12 by rivets (or welding, screwing), and the other end extends to the top or side of the power module 20. The driving end of the drive assembly 13 is drivenly connected to the movable bracket 11. In the initial state, the drive assembly 13 is not running, and at this time, the movable bracket 11 has no contact with the surface of the power module 20; when the drive assembly 13 is running, the drive assembly 13 drives the movable end of the movable bracket 11 to move downward and abut against the power module 20, and provides a continuous clamping force through the drive assembly 13. In this method, the initial separation state of the movable bracket 11 allows the power module 20 to be placed directly inside the cabinet 30 without pre-aligning the fixing points, simplifying the installation steps and increasing the installation error between the power module 20 and the cabinet 30, making it easier to push the power module 20 into the cabinet 30; secondly, the mechanical clamping force generated by the drive component 13 can suppress the vibration or displacement of the power module 20 during operation, avoiding reduced equipment stability and poor electrical contact due to loosening.

[0035] Please refer to it again. Figures 1 to 2 The movable bracket 11 includes a mounting part 111, a deformable part 112, and a movable part 113. The mounting part 111 is fixedly connected to the mounting platform 12. One end of the deformable part 112 is connected to the mounting part 111, and the other end is connected to the movable part 113. The drive assembly 13 drives the deformable part 112 to undergo elastic deformation in the direction of the power module 20, so that the movable part 113 presses against the power module 20.

[0036] Specifically, the mounting portion 111 of the movable bracket 11 is a rectangular metal plate, rigidly fixed to the mounting platform 12 by bolt welding. The deformable portion 112 is made of an elastic metal plate with a Z-shaped bending structure. One end of the deformable portion 112 is welded or screwed to the edge of the mounting portion 111, and the other end is connected to the movable portion 113 (rectangular pressure plate). The drive assembly 13 is a manual knob-type threaded push rod, vertically installed through the top of the mounting platform 12. The end of the push rod presses against the outer side of the Z-shaped bend of the deformable portion 112. In the initial state, the deformable portion 112 is in a natural bending state, and the movable portion 113 has no contact with the power module 20. When the knob is rotated, the push rod applies a pushing force to the deformable portion 112, forcing the Z-shaped structure to elastically deform inward, driving the movable portion 113 to move towards the power module 20 and press against its surface. The elastic deformation of the deformation part 112 allows the movable part 113 to automatically adjust the clamping angle and force after contacting the power module 20, adapting to slight unevenness or assembly tolerances on the module surface. At the same time, the Z-shaped deformation part 112 absorbs mechanical impact and vibration energy during the clamping process, avoiding damage to the housing of the power module 20 caused by rigid contact.

[0037] It is understood that the movable support 11 in the embodiments of this application can be a Z-shaped structure, or it can be an arc or an S-shaped structure. No specific limitation is made here, and the specific choice can be made according to the actual situation.

[0038] Please see Figure 2 The drive assembly 13 includes a drive member 131 and a locking member 132. The locking member 132 is mounted on the mounting platform 12. The drive member 131 is movably inserted through the locking member 132. The locking member 132 locks the drive member 131 when the drive member 131 stops operating. The free end of the drive member 131 abuts against the movable part 113.

[0039] Specifically, in this embodiment, the driving component 131 is a metal screw with external threads, and the locking component 132 is a hexagonal nut-shaped fixing sleeve embedded in the mounting platform 12, with an internal thread on its inner wall that matches the external thread of the driving component 131. The driving component 131 is horizontally inserted into the locking component 132. When the driving component 131 is rotated, the thread engagement causes it to move axially, and the free end of the driving component 131 abuts against the movable part 113. When rotation stops, the self-locking effect of the thread prevents the driving component 131 from retracting. The outer ring of the locking component 132 is provided with an anti-rotation boss, which is fixed to the mounting platform 12 by bolts to ensure that the threaded pair is always in a stationary state. In this embodiment, the rotational motion is converted into the linear displacement of the driving component 131 through thread transmission, realizing the progressive clamping control of the movable part 113 on the power module 20, avoiding over-pressure or under-pressure. When the driving component 131 stops operating, the self-locking characteristic of the threaded pair automatically prevents reverse displacement, eliminating the need for additional locking operations and ensuring a stable and long-lasting clamping force.

[0040] It is understood that the drive component 13 in this embodiment may also adopt pneumatic drive, hydraulic drive and electromagnetic drive and other drive structures. The helical push rod drive is only a preferred method in this embodiment and is not limited here.

[0041] Please refer to it again. Figure 2 The active part 113 is a pressure plate, which is mounted on top of the power module 20. A flexible structure 114 is laid on the pressure plate.

[0042] Specifically, in this embodiment, the pressure plate is a rectangular aluminum alloy plate, which is detachably assembled to the end of the deformation section 112, covering the top surface of the power module 20. The flexible structure 114 laid on the top surface of the pressure plate is a molded silicone layer with uniform thickness and edges extending to the four sides of the pressure plate to form a covering structure. The elastic deformation of the silicone layer can absorb the high-frequency vibration energy of the power module 20 during operation, reduce the mechanical impact of the screw on the pressure plate, and improve structural stability.

[0043] Please refer to it again. Figure 2 The drive assembly 13 also includes an elastic element 133, which is sleeved on the drive assembly 131. One end of the elastic element 133 abuts against the operating end of the drive assembly 131, and the other end of the elastic element 133 abuts against the mounting platform 12.

[0044] Specifically, in this embodiment, the elastic element 133 is a helical compression spring, sleeved on the outside of the rod of the driving element 131 (metal screw). The operating end of the driving element 131 is a knob-shaped structure, with one end pressing against the operating end (i.e., the nut) of the driving element 131 and the other end pressing against the top surface of the mounting platform 12. When the driving element 131 is inserted into the locking element 132 (a fixed sleeve with internal threads), the spring is in a naturally extended state; as the knob is rotated to move the driving element 131 towards the movable part 113, the spring is compressed, generating a reverse elastic force. When the driving element 131 stops rotating, the compression force of the spring and the self-locking of the thread together maintain the position of the driving element 131. The compression force of the spring continues to act between the driving element 131 and the mounting platform 12, offsetting the assembly gap of the threaded pair and avoiding slight displacement caused by vibration under the compressed state. When rotating the drive component 131, the spring absorbs the fluctuations in the force applied by the hand, making the advancement process of the drive component 131 smooth and reducing the risk of sudden changes in clamping force caused by uneven operating speed.

[0045] Please refer to it again. Figure 2 The power module fixing structure 10 also includes a buffer 134, which is located between the elastic member 133 and the operating end of the drive member 131.

[0046] Specifically, in this embodiment, the buffer 134 is an annular rubber pad, the inner hole of which is fitted onto the rod of the drive member 131 (metal screw), and its outer diameter is larger than the outer diameter of the elastic member 133 (helical compression spring). One side of the buffer 134 is in contact with the end face of the elastic member 133 near the operating end (knob) of the drive member 131, and the other side is in close contact with the limiting boss on the inner wall of the operating end. When the drive member 131 rotates and advances, the elastic member 133 and the buffer 134 are simultaneously compressed, and the rubber pad undergoes radial expansion and axial compression deformation; when the drive member 131 stops rotating, the elastic restoring force of the rubber pad helps maintain the relative position of the elastic member 133 and the drive member 131.

[0047] It is understood that the buffer 134 in this embodiment can be any other pad structure that plays a buffering role, in addition to an annular rubber pad. The specific structure is not limited here.

[0048] Secondly, please refer to Figures 3 to 5 This application proposes a power device, including: at least one power module fixing structure 10 as in the first aspect, a cabinet 30, a power module 20, and a fastening component 40. The cabinet 30 is provided with a receiving space 31. The power module 20, the power module fixing structure 10, and the fastening component 40 are all assembled in the receiving space 31. The power module 20, the power module fixing structure 10, and the fastening component 40 act on the power module 20 so that the power module 20 is securely fixed in the receiving space 31.

[0049] In practical applications, the power module fixing structure 10 is mounted on one side of the cabinet 30, and the fastening assembly 40 is mounted on the other side of the cabinet 30. Operating the control end of the movable bracket 11 causes its drive end to move downwards and abut against the power module 20, providing support to one side of the power module 20 and securing it firmly within the receiving space 31. The fastening assembly 40 then fastens the power module 20 from the other side. The fastening assembly 40 and the power module fixing structure 10 work together to apply fastening force to the power module 20 from both sides, forming a comprehensive, three-dimensional stable structure that firmly locks the power module 20 within the receiving space 31 of the cabinet 30. This ensures stable operation under high-intensity swaying and vibration conditions, while also preventing damage to the electronic components within the power module 20 and extending the service life of the power equipment.

[0050] Please see Figure 4 The fastening assembly 40 includes a first mounting base 41 and a first fastener 42. The first mounting base 41 is mounted above the accommodating space 31. The first mounting base 41 is provided with a first through hole 411. The power module 20 is provided with a second through hole 21 corresponding to the position of the first through hole 411. The first fastener 42 passes through the first through hole 411 and the second through hole 21 in sequence, so that the power module 20 is securely placed in the accommodating space 31.

[0051] Specifically, the first mounting base 41 is assembled above the accommodating space 31, serving a positioning function. The second through hole 21 on the power module 20 corresponds to the first through hole 411 of the first mounting base 41. When the first fastener 42 passes through these two through holes in sequence, it forms a "bolt" that fixes the power module 20 on the first mounting base 41, thereby securing it within the accommodating space 31 of the cabinet 30. This prevents the power module 20 from shifting or loosening, improves the stability of the power module 20 within the accommodating space 31 during operation, and reduces the probability of power equipment failure due to fixing issues with the power module 20.

[0052] Please see Figure 5 The fastening assembly 40 also includes a second mounting base 43 and a second fastener 44. The second mounting base 43 is mounted below the accommodating space 31. The second mounting base 43 is provided with a third through hole 431. The power module 20 is provided with a fourth through hole 22 corresponding to the position of the third through hole 431. The second fastener 44 passes through the third through hole 431 and the fourth through hole 22 in sequence so that the power module 20 is securely placed in the accommodating space 31.

[0053] Specifically, the second mounting base 43 is mounted below the accommodating space 31, serving to support the power module 20. The fourth through hole 22 on the power module 20 precisely corresponds to the third through hole 431 of the second mounting base 43. When the second fastener 44 passes through these two through holes in sequence, a stable "anchor point" is built below the accommodating space, fixing the power module 20 to the second mounting base 43, and thus securing it within the accommodating space 31 of the cabinet 30.

[0054] In this embodiment, the diameter of the first through hole 411 is the same as the diameter of the second through hole 21, and the diameter of the third through hole 431 is the same as the diameter of the fourth through hole 22. During the fixing process using fasteners (such as bolts), the fasteners can pass through these through holes smoothly and tightly, thereby improving the assembly efficiency of the power module 20 in the power device.

[0055] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0056] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0057] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0058] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0059] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0061] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0062] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A power module fixing structure, characterized in that, include: The power module, movable bracket, and mounting platform are installed in the cabinet. The mounting platform is fixedly connected to the cabinet. One end of the movable bracket is fixedly connected to the mounting platform, and the other end is connected through a drive assembly. The movable bracket acts on the power module. In the initial state, the movable bracket is separated from the power module, and driving the drive component can cause the movable bracket to press against the power module.

2. The power module fixing structure according to claim 1, characterized in that, The movable bracket includes a mounting part, a deformation part, and a movable part. The mounting part is fixedly connected to the mounting platform. One end of the deformation part is connected to the mounting part, and the other end is connected to the movable part. The driving component drives the deformation part to elastically deform in the direction of the power module, so that the movable part presses against the power module.

3. The power module fixing structure according to claim 2, characterized in that, The drive assembly includes a drive member and a locking member. The locking member is mounted on the mounting platform. The drive member is movably inserted through the locking member. The locking member locks the drive member when the drive member stops operating. The free end of the drive member abuts against the movable part.

4. The power module fixing structure according to claim 3, characterized in that, The movable part is a pressure plate, which is mounted on top of the power module, and a flexible structure is laid on the pressure plate.

5. The power module fixing structure according to claim 3, characterized in that, The drive assembly also includes an elastic element, which is sleeved on the drive assembly. One end of the elastic element abuts against the operating end of the drive assembly, and the other end of the elastic element abuts against the mounting platform.

6. The power module fixing structure according to claim 5, characterized in that, It also includes a buffer element, which is disposed between the elastic element and the operating end of the drive element.

7. A power device, characterized in that, include: At least one power module fixing structure, cabinet, and fastening assembly as described in any one of claims 1 to 6, wherein the cabinet has an accommodating space, the power module fixing structure and the fastening assembly are both assembled in the accommodating space, and the power module fixing structure and the fastening assembly act on the power module to secure the power module in the accommodating space.

8. The power device according to claim 7, characterized in that, The fastening assembly includes a first mounting base and a first fastener. The first mounting base is mounted above the accommodating space. The first mounting base has a first through hole. The power module has a second through hole corresponding to the position of the first through hole. The first fastener passes through the first through hole and the second through hole in sequence so that the power module is securely placed in the accommodating space.

9. The power device according to claim 8, characterized in that, The fastening assembly further includes: a second mounting base and a second fastener. The second mounting base is assembled below the accommodating space. The second mounting base is provided with a third through hole. The power module is provided with a fourth through hole corresponding to the position of the third through hole. The second fastener passes through the third through hole and the fourth through hole in sequence so that the power module is securely placed in the accommodating space.

10. The power device according to claim 9, characterized in that, The diameter of the first through hole is the same as the diameter of the second through hole, and the diameter of the third through hole is the same as the diameter of the fourth through hole.

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