Safety device for medium and high voltage system power modules

Abstract

This case provides a medium- and high-voltage system power module safety device, including a cabinet, a power module and a metal cover. The cabinet includes a receiving seat to form a receiving space, and is connected to the medium-voltage live area, and the receiving seat has an opening. The power module is detachably arranged in the receiving seat through the opening to be electrically connected to the medium-voltage live area. The metal cover is pivotally connected to the upper edge of the receiving seat and is grounded. When the metal cover is in the first position, it closes the opening and simultaneously shields the medium-voltage live area. The power module can push the metal cover through the opening, so that the metal cover pivots to the second position and abuts the top surface of the power module, and forms an electrical connection with the medium-voltage live area when the power module is installed in the receiving seat. When the power module is detached from the receiving seat, the metal cover rotates to the first position, and the opening is closed to shield the medium-voltage live area.

Description

Technical Field

[0001] This case involves a safety device, specifically a safety device for power modules in medium- and high-voltage systems. This device simplifies the maintenance procedures for power modules in medium- and high-voltage systems and ensures safety, allowing users to perform power module maintenance without disconnecting the power supply to the medium- and high-voltage systems. Background Art

[0002] With economic development, electricity demand has increased dramatically, and the requirements for electricity safety and protection are becoming increasingly stringent. Common medium- and high-voltage system cabinets often contain multiple power modules for user use. However, to maintain power modules in medium- and high-voltage system cabinets, current safety regulations require that live parts and maintenance personnel in the medium- and high-voltage system have a grounded metal shield. Therefore, when performing maintenance work on power modules in medium- and high-voltage systems, the system power must be disconnected before the power module can be removed for maintenance. Consequently, current maintenance work on power modules in medium- and high-voltage systems presents numerous inconveniences. This is especially true for medium- and high-voltage systems serving multiple users in industrial areas. If maintenance work requires disconnecting the system power supply for all users, normal production will be disrupted, resulting in significant losses for power users.

[0003] On the other hand, current safety devices for power modules in medium and high voltage systems often utilize expensive power-off mechanisms. This limits power module maintenance operations to the medium and high voltage system's power-off mechanisms, preventing them from effectively improving the efficiency and quality of maintenance operations.

[0004] In view of this, it is necessary to provide a medium and high voltage system power module safety device that can simplify the maintenance procedures of the power module in the medium and high voltage system and ensure safety, allowing users to perform maintenance on the power module without powering off the medium and high voltage system, thereby solving the shortcomings of conventional technology. Summary of the Invention

[0005] The purpose of this case is to provide a safety device for power modules in medium and high voltage systems to simplify the maintenance procedures for power modules in medium and high voltage systems and ensure safety, allowing users to perform power module maintenance without disconnecting the power supply to the medium and high voltage system.

[0006] Another objective of this application is to provide a safety device for power modules in medium- and high-voltage systems. This device utilizes a grounded metal cover pivotally attached to the system cabinet, replacing the cabinet's outer casing. When the power module is inserted or removed, the grounded metal cover acts as a safety shield between maintenance personnel and medium- and high-voltage live elements, simplifying maintenance procedures for power modules in medium- and high-voltage systems. When the power module is removed from the system cabinet, the grounded metal cover automatically isolates the live medium- and high-voltage areas from maintenance personnel, ensuring safety.

[0007] Another purpose of this case is to provide a safety device for a high-voltage system power module. The metal cover that rotates between a first position and a second position is also equipped with at least two elastic clips. When the power module is detached, the metal cover is limited to the first position by the at least two elastic clips to prevent the metal cover from being opened or the opening from being accidentally touched. Furthermore, after the power module is placed in the accommodating space and installed in the accommodating seat, at least two elastic clips engage with the power module to prevent the power module from falling off and separating. On the other hand, if the power module is to be detached, at least two elastic clips must be synchronously applied to release the power module, and the power module is allowed to detach from the accommodating seat. In this way, the maintenance safety of the power module is further ensured, effectively improving the competitiveness of the product.

[0008] In order to achieve the aforementioned objectives, the present invention provides a medium- and high-voltage system power module safety device comprising a cabinet, a power module, and a metal cover. The cabinet comprises a receiving seat, which forms a receiving space, is connected to a medium-voltage live area, and has an opening. The power module is detachably disposed in the receiving seat through the opening of the receiving seat to be electrically connected to the medium-voltage live area. The metal cover is pivotally connected to an upper edge of the receiving seat and is grounded, wherein when the metal cover is in a first position, it closes the opening and simultaneously shields the medium-voltage live area. The power module can be pivoted to a second position by pushing the metal cover against the opening, and the metal cover abuts the top surface of the power module. When the power module is placed in the receiving space and installed on the receiving seat, it forms an electrical connection with the medium-voltage live area. When the power module is detached from the receiving seat, the metal cover rotates to the first position, closing the opening to shield the medium-voltage live area.

[0009] In one embodiment, the medium and high voltage system power module safety device further includes at least two elastic clips, which are spatially opposite to the metal cover and adjacent to the opening, and are assembled to limit the metal cover to the first position.

[0010] In one embodiment, at least two elastic buckles are arranged along a side edge of the opening, spatially opposite to a side edge of the metal cover.

[0011] In one embodiment, at least two elastic buckles are disposed separately from each other.

[0012] In one embodiment, each elastic buckle includes a hook and an elastic member, the elastic member constantly presses against the hook so that the hook protrudes toward the receiving seat, wherein when the metal cover rotates to the first position, the hook restricts the metal cover from rotating to the second position.

[0013] In one embodiment, each elastic buckle further includes an operating portion connected to the hook and the elastic member, which is constantly pushed toward the opening by the elastic member, and is assembled to receive force to drive the hook to push against the elastic member, so that the hook disengages from the path of the metal cover plate and rotates from the first position to the second position.

[0014] In one embodiment, when the power module is inserted into the accommodating space through the opening and installed in the accommodating seat, the operating parts of at least two elastic clips are driven by the power module, so that the hooks of at least two elastic clips are disengaged from the path of the metal cover plate rotating from the first position to the second position, thereby facilitating the power module to push against the metal cover plate and rotate to the second position.

[0015] In one embodiment, after the power module is inserted into the accommodating space through the opening and installed in the accommodating seat, the operating portions of at least two elastic clips engage with a front end of the power module to prevent the power module from being removed from the accommodating seat.

[0016] In one embodiment, the operating portions of at least two elastic buckles are forced to separate from the opening and are no longer engaged with the front end of the power module, allowing the power module to separate from the accommodating seat through the opening.

[0017] In one embodiment, the accommodating seat includes a first connecting member, which is arranged between the accommodating seat and the medium-voltage live area, and the power module includes a second connecting member, which is arranged at a rear end of the power module. When the power module is placed in the accommodating space and installed on the accommodating seat, the first connecting member and the second connecting member are engaged, and the power module forms an electrical connection with the medium-voltage live area.

[0018] In one embodiment, the power module includes a handle disposed at a front end of the power module, and exposed from the opening when the power module is placed in the accommodating space and installed in the accommodating seat.

[0019] In one embodiment, when the handle is forced to drive the power module out of the accommodating seat, the first connecting member is separated from the second connecting member, thereby interrupting the electrical connection between the power module and the medium voltage live area.

[0020] In one embodiment, the first connector and the second connector are respectively a male connector and a female connector, wherein the first connector is disposed on a circuit board and protrudes from an outer edge of the circuit board, wherein when the rear end of the power module is close to the outer edge of the circuit board, the first connector and the second connector engage with each other to form an electrical connection.

[0021] In one embodiment, the cabinet includes at least one fixing hole adjacent to an opening of the receiving seat, wherein the power module includes at least one fixing portion spatially opposite to the at least one fixing hole. After the power module is placed into the receiving space through the opening and installed in the receiving seat, the at least one fixing portion and the at least one fixing hole engage with each other through a locking member, thereby locking the power module to the cabinet.

[0022] In one embodiment, the at least one fixing portion includes two fixing portions respectively disposed at two diagonally opposite corners of the front end of the power module, wherein the locking member is a screw.

[0023] In one embodiment, the metal cover is pivotally connected to the upper edge of the accommodating seat through a pivoting element.

[0024] In one embodiment, the pivoting element is a hinge.

[0025] In one embodiment, the power module further includes an insulating section disposed between a front end of the power module and a rear end of the power module.

[0026] In one embodiment, the cabinet is grounded, the medium-voltage live area is accommodated in the cabinet, and the medium-voltage live area is insulated from the cabinet.

[0027] In one embodiment, the medium- and high-voltage system power module safety device further includes a control module disposed in the cabinet and electrically connected to the medium-voltage live area and the power module to form a solid-state transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is an exploded view of the structure of the medium and high voltage system power module safety device according to a preferred embodiment of the present invention;

[0029] Figure 2 This is a three-dimensional structural diagram of a medium and high voltage system power module safety device according to a preferred embodiment of the present invention;

[0030] Figure 3 is a cross-sectional view of a medium- and high-voltage system power module safety device according to a preferred embodiment of the present invention;

[0031] Figure 4 Schematic diagram showing a detached state of the power module and the accommodating seat in a medium- and high-voltage system power module safety device according to a preferred embodiment of the present invention;

[0032] Figure 5 is revealed Figure 4 A front view of the receiving seat when the middle power module is detached from the receiving seat;

[0033] Figure 6 is revealed Figure 4 A schematic diagram showing the metal cover in the first position when the power module is detached from the receiving seat;

[0034] Figure 7 It is for Figure 6 Top view of

[0035] Figure 8 Schematic diagram showing a power module and a receiving seat in a moving state in a medium- and high-voltage system power module safety device according to a preferred embodiment of the present invention;

[0036] Figure 9 is revealed Figure 8 A front view of the power module combined with the accommodating seat when the power module and the accommodating seat are in a moving state;

[0037] Figure 10 is revealed Figure 8A schematic diagram of the metal cover rotating from a first position to a second position when the power module and the receiving seat are in a moving state;

[0038] Figure 11 It is for Figure 10 Top view of

[0039] Figure 12 Schematic diagram showing a state in which a power module and a receiving seat are connected in a medium- and high-voltage system power module safety device according to a preferred embodiment of the present invention;

[0040] Figure 13 is revealed Figure 12 A front view of the power module combined with the accommodating seat when the power module and the accommodating seat are in an assembled state;

[0041] Figure 14 is revealed Figure 12 A schematic diagram showing the metal cover in the second position when the middle power module and the receiving seat are in an assembled state;

[0042] Figure 15 It is for Figure 14 Top view of .

[0043]

Explanation of symbols

[0044] 1: Safety device

[0045] 10: Cabinet

[0046] 11: Control module

[0047] 20: Medium voltage live area

[0048] 30: Storage seat

[0049] 300: Accommodation space

[0050] 31: Opening

[0051] 311: Side edge

[0052] 32: Upper edge

[0053] 33: Pivot element

[0054] 34a, 34b: elastic buckle

[0055] 341: Hook

[0056] 342: Elastic parts

[0057] 343: Operation Department

[0058] 35: First connecting piece

[0059] 36: Circuit Board

[0060] 37: Fixing hole

[0061] 40: Power module

[0062] 401: Frontend

[0063] 402: Backend

[0064] 41: Second connecting piece

[0065] 42: handle

[0066] 43: Top surface

[0067] 44: Sidewall

[0068] 45: Fixed part

[0069] 451: Locking hardware

[0070] 46: Insulation section

[0071] 50: Metal cover

[0072] 51: Side

[0073] X, Y, Z: Axis DETAILED DESCRIPTION

[0074] Some exemplary embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention is capable of various variations in various aspects without departing from the scope of the present invention, and that the description and drawings herein are intended to be illustrative, not limiting, of the present invention. For example, if the following description of a first feature being positioned on or above a second feature includes embodiments in which the first and second features are in direct contact, it also includes embodiments in which an additional feature may be positioned between the first and second features, such that the first and second features are not in direct contact. Furthermore, reference symbols and / or designations may be repeated across different embodiments in the present disclosure. This repetition is for simplicity and clarity and is not intended to limit the relationships between the various embodiments and / or the described structures. Furthermore, to facilitate descriptions of the relationships between one component or feature and another component or features in the drawings, spatially relative terms such as "under," "below," "lower," "above," "upper," and similar terms may be used. Spatially relative terms are used to encompass different orientations of the device in use or operation, in addition to the orientations depicted in the figures. The device may also be oriented differently (e.g., rotated 90 degrees or in other orientations), and the description of the spatially relative terms used should be interpreted accordingly. Furthermore, when a component is referred to as being "connected to" or "coupled to" another component, it may be directly connected to or coupled to the other component, or intervening components may be present. Although the numerical ranges and parameters of the broad scope of this disclosure are approximate, the numerical values are stated as precisely as possible in the specific examples. Furthermore, it should be understood that while the terms "first," "second," and "third," etc. may be used in the claims to describe different components, these components are not limited by these terms, and in the embodiments described accordingly, these components are represented by different reference numerals. These terms are used to distinguish different components. For example, a first component could be referred to as a second component, and similarly, a second component could be referred to as a first component without departing from the scope of the embodiments. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Except in the operating / working examples, or unless explicitly stated, all numerical ranges, amounts, values and percentages disclosed herein (such as those percentages of angles, time durations, temperatures, operating conditions, amount ratios and the like) should be understood as being modified by the term "about" or "substantially" in all embodiments. Accordingly, unless otherwise indicated, the numerical parameters stated in this disclosure and the accompanying claims are approximate values that may vary as needed. For example, each numerical parameter should be interpreted at least in terms of the number of significant figures described and by applying ordinary rounding principles. Ranges can be expressed herein as from one endpoint to the other or between two endpoints. All ranges disclosed herein include endpoints unless otherwise specified.

[0075] Figure 1 It is a structural exploded view of the medium and high voltage system power module safety device of the preferred embodiment of this case. Figure 2 It is a three-dimensional structural diagram of a medium and high voltage system power module safety device according to a preferred embodiment of the present invention. Figure 3 2 is a cross-sectional view of a medium- and high-voltage system power module safety device according to a preferred embodiment of the present invention. In this embodiment, the medium- and high-voltage system power module safety device (hereinafter referred to as the safety device) 1 is applied, for example, to the field of solid-state transformers (SSTs), simplifying maintenance procedures while ensuring safety, allowing users to perform maintenance procedures without powering off the medium- and high-voltage systems. Of course, the application of the present invention is not limited to this. In this embodiment, the safety device 1 includes a cabinet 10, a power module 40, and a metal cover 50. The cabinet 10 includes at least one receiving seat 30, each receiving seat 30 forming a receiving space 300 and connected to a medium-voltage live area 20 within the cabinet 10. In this embodiment, the cabinet 10 includes four receiving seats 30, but the number of receiving seats 30 is for illustrative purposes only and is not intended to be limiting. In this embodiment, each receiving seat 30 has an opening 31. The power module 40 is spatially relative to the receiving seat 30, and is detachably disposed in the receiving seat 30 through the opening 31 of the receiving seat 30, so that the power module 40 can form an electrical connection with the medium-voltage live area 20. It should be noted that the power module 40 can be selectively paired to one of the four receiving seats 30. For ease of explanation, in the following embodiments, only a single power module 40 is paired to a corresponding receiving seat 30 as an example, and the present case is not limited to this. In this embodiment, the metal cover 50 is pivotally connected to an upper edge 32 of the receiving seat 30 through a pivot element 33 and is grounded. The pivot element 33 is, for example, a hinge. In this embodiment, when the metal cover 50 is located in a first position, the metal cover 50 will align with the opening 31 to close the opening 31 and shield the medium-voltage live area 20. The power module 40 can push against the metal cover 50 through the opening 31 of the accommodating seat 30, causing the metal cover 50 to pivot to a second position and abut against the top surface 43 of the power module 40. When the power module 40 is placed in the accommodating space 300 and installed in the accommodating seat 30, it forms an electrical connection with the medium-voltage live area 20. Furthermore, when the power module 40 is removed from the accommodating seat 30, the metal cover 50 is no longer pushed by the power module 40 and rotates to the first position. The metal cover 50 seals the opening 31, shielding the medium-voltage live area 20 from exposure through the opening 31.

[0076] In this embodiment, the safety device 1 further includes at least two elastic clips 34a, 34b, which are spatially opposed to the metal cover 50 and adjacent to the opening 31, and are assembled to constrain the metal cover 50 to the first position. In this embodiment, the at least two elastic clips 34a, 34b are separated from each other to prevent accidental opening of the metal cover 50 or the opening 30 by human touch. In this embodiment, when the power module 40 is placed in the accommodating space 300 and installed in the accommodating seat 30, the at least two elastic clips 34a, 34b engage with the power module 40 to prevent the power module 40 from falling off and separating. On the other hand, if the power module 40 is to be detached, the operator must simultaneously apply force to the at least two elastic clips 34a, 34b to release the power module 40, allowing the power module 40 to be separated from the accommodating seat 30. In this way, the safety device 1 can further ensure the maintenance safety of the power module 40, effectively enhancing the competitiveness of the product.

[0077] In this embodiment, the accommodating seat 30 includes a first connecting member 35, which is disposed between the accommodating seat 30 and the medium-voltage live area 20. The power module 40 includes a second connecting member 41, which is disposed at a rear end 402 of the power module 40. When the power module 40 is placed in the accommodating space 300 and installed in the accommodating seat 30, the first connecting member 35 engages with the second connecting member 41, and the power module 40 forms an electrical connection with the medium-voltage live area 20. In addition, in this embodiment, the power module 40 includes a handle 42, which is disposed at a front end 401 of the power module 40. When the power module 40 is placed in the accommodating space 300 and installed in the accommodating seat 30, the handle 42 is exposed to the opening 31. In addition, when the handle 42 is subjected to force to drive the power module 40 to detach from the accommodating seat 30, the first connecting member 35 detaches from the second connecting member 41, thereby interrupting the electrical connection between the power module 40 and the medium-voltage live area 20. In this embodiment, the first connecting member 35 and the second connecting member 41 are a male connecting member and a female connecting member, respectively. The first connecting member 35 is disposed on a circuit board 36 and protrudes from the outer edge of the circuit board 36. When the rear end 402 of the power module 40 is close to the outer edge of the circuit board 36, the first connecting member 35 of the accommodating seat 30 and the second connecting member 41 of the power module 40 engage with each other to form an electrical connection.

[0078] In this embodiment, the power module 40 further includes an insulating section 46 disposed between a front end 401 and a rear end 402 of the power module 40. Furthermore, the cabinet 10 is also grounded, and the medium-voltage live area 20 is housed within the cabinet 10 and insulated from the cabinet 10. In this embodiment, the safety device 1 further includes a control module 11 disposed within the cabinet 10 and electrically connected to the medium-voltage live area 20 and the power module 40, forming a solid-state transformer (SST). Of course, the present invention is not limited to this embodiment.

[0079] In this embodiment, the cabinet 10 includes at least one fixing hole 37 disposed adjacent to the opening 31 of the accommodating seat 30. Furthermore, the power module 40 includes at least one fixing portion 45 spatially opposed to the at least one fixing hole 37. In this embodiment, when the power module 40 is placed into the accommodating space 300 through the opening 31 and mounted on the accommodating seat 30, the at least one fixing portion 45 and the at least one fixing hole 37 engage with each other via a locking member 451, thereby securing the power module 40 to the cabinet 10. In this embodiment, the at least one fixing portion 45 includes two fixing portions 45 disposed at two diagonally opposite corners of the front end 401 of the power module 40. The locking member 451 may be, for example, a screw. Of course, the method of securing the power module 40 to the cabinet 10 may be adjusted according to actual application requirements, and the present invention is not limited thereto. The operating procedures of the security device 1 will be further described later.

[0080] Figure 4 It is a schematic diagram showing a state in which the power module and the receiving seat of the medium and high voltage system power module safety device are detached according to a preferred embodiment of the present invention. Figure 5 is revealed Figure 4 Front view of the accommodating seat with the middle power module detached from the accommodating seat. Figure 6 is revealed Figure 4 Schematic diagram of the metal cover in the first position when the power module is detached from the receiving seat. Figure 7 It is for Figure 6 . In this embodiment, at least two elastic clips 34a, 34b are also arranged along a side edge 311 of the opening 31, spatially relative to a side edge 51 of the metal cover 50. It is worth noting that at least two elastic clips 34a, 34b are separated from each other. Each elastic clip 34a, 34b includes a hook 341 and an elastic member 342. The elastic member 342 is, for example, a compression spring, which constantly presses against the hook 341, causing the hook 341 to protrude toward the accommodating seat 30. When the power module 40 and the accommodating seat 30 in the safety device 1 are in a detached state, the metal cover 50 is maintained in the first position, as shown in FIG. Figure 6 and Figure 7 As shown, the hook 341 restricts the metal cover 50 from rotating to the second position. In addition, in this embodiment, each elastic hook 34a, 34b further includes an operating portion 343 connected to the hook 341 and the elastic member 342, and is constantly pressed toward the opening 31 by the elastic member 342. When the power module 40 and the accommodating seat 30 in the safety device 1 are in a detached state, the hook 341 restricts the metal cover 50 from rotating to the second position. To release the restriction of the hook 341 on the metal cover 50, the operating portions 343 of the two elastic hooks 34a, 34b need to be simultaneously driven by force to drive the hook 341 to push against the elastic member 342, so that the hook 341 is out of the path of the metal cover 50 rotating from the first position to the second position.

[0081] Figure 8It is a schematic diagram showing the power module and the accommodating seat in the moving state in the medium and high voltage system power module safety device of the preferred embodiment of the present case. Figure 9 is revealed Figure 8 Front view of the power module combined with the accommodating seat when the power module and the accommodating seat are in a moving state. Figure 10 is revealed Figure 8 Schematic diagram of the metal cover rotating from the first position to the second position when the power module and the accommodating seat are in a moving state. Figure 11 It is for Figure 10 In this embodiment, when the rear end 402 of the power module 40 is in a moving state through the opening 31, the operating portions 343 of at least two elastic clips 34a and 34b are simultaneously pushed by the side wall 44 of the power module 40, driving the hook 341 to move, so that the hooks 341 of at least two elastic clips 34a and 34b are both separated from the path of the metal cover 50 from the first position to the second position, as shown in FIG. Figure 10 and Figure 11 As shown, the power module 40 is kept pressed against the metal cover 50 and rotated to the second position. As the rear end 402 of the power module 40 pushes against the metal cover 50 through the opening 31, until the second connecting member 41 of the rear end 402 of the power module 40 engages with the first connecting member 35 of the accommodating seat 30 to form an electrical connection, the metal cover 50 will be rotated from the first position (refer to Figure 6 and Figure 7 ) to the second position (reference Figure 14 and Figure 15 ).

[0082] Figure 12 It is a schematic diagram showing the assembled state of the power module and the accommodating seat in the medium and high voltage system power module safety device of the preferred embodiment of the present case. Figure 13 is revealed Figure 12 Front view of the power module combined with the accommodating seat when the power module and the accommodating seat are in assembled state. Figure 14 is revealed Figure 12 Schematic diagram of the metal cover in the second position when the power module and the accommodating seat are assembled. Figure 15 It is for Figure 14 In this embodiment, when the second connecting member 41 of the rear end 402 of the power module 40 engages with the first connecting member 35 of the accommodating seat 30, the power module 40 is electrically connected to the medium voltage live area 20, and the metal cover 50 rotates to the second position, as shown in FIG. Figure 14 and Figure 15As shown. After the power module 40 is placed into the accommodating space 300 through the opening 31 and installed in the accommodating seat 30, the operating portions 343 of at least two elastic clips 34a and 34b engage with the front end 401 of the power module 40, preventing the power module 40 from being removed from the accommodating seat 30. Furthermore, in this embodiment, after the power module 40 is placed into the accommodating space 300 through the opening 31 and installed in the accommodating seat 30, the fixing portion 45 of the power module 40 and the fixing hole 37 of the cabinet 10 can be engaged with each other via the locking member 451, thereby securing the power module 40 to the cabinet 10. Of course, the method of securing the power module 40 to the cabinet 10 can be adjusted according to actual application requirements, and the present invention is not limited thereto. On the other hand, when the operator wishes to remove the power module 40 from the accommodating seat 30, they must simultaneously apply force to at least two elastic latches 34a and 34b, forcing the operating portions 343 of both elastic latches 34a and 34b out of the opening 31 and out of engagement with the front end 401 of the power module 40. This allows the power module 40 to be removed from the accommodating seat 30 through the opening 31. Only then can the operator use the handle 42 to pull the power module 40 out of the accommodating seat 30.

[0083] In this embodiment, when the operator pulls the power module 40 out of the accommodating seat 30 by the handle 42, the metal cover 50 will be moved from the second position (eg Figure 14 and Figure 15 As shown) gradually rotates to the first position (as shown Figure 6 and Figure 7 (as shown). When the power module 40 is completely removed from the opening 31, the metal cover 50 rotates to the first position, and the operating portions 343 of the at least two elastic latches 34a and 34b are no longer pushed against by the power module 40. The hooks 341 of the at least two elastic latches 34a and 34b resume their protrusion toward the opening 31. The metal cover 50 is restrained in the first position by the at least two elastic latches 34a and 34b, preventing accidental opening of the metal cover 50 or the opening 31. In other words, the safety device 1 is grounded via the metal cover 50 pivotally connected to the cabinet 10. When the power module 40 is inserted or removed from the accommodating seat 30, the grounded metal cover 50 also corresponds to the switch opening 31, serving as a safety barrier between maintenance personnel and the medium-voltage live area 20. This simplifies the maintenance process for the power module 40 in the safety device 1. When the power module 40 is removed from the cabinet 10, the grounded metal cover 50 automatically isolates the medium-voltage live area 20 from maintenance personnel, ensuring the safety of maintenance personnel and effectively enhancing the product's competitiveness.

[0084] In summary, this invention provides a safety device for power modules in medium- and high-voltage systems to simplify maintenance procedures for power modules in medium- and high-voltage systems and ensure safety. This device allows users to perform maintenance on the power modules without disconnecting the system from the mains. By grounding a metal cover pivotally connected to the system cabinet, replacing the system cabinet's outer casing, the grounded metal cover acts as a safety shield between maintenance personnel and the medium- and high-voltage live elements when the power module is plugged in or removed. This simplifies the maintenance procedures for power modules in the medium- and high-voltage systems. When the power module is removed from the medium- and high-voltage system cabinet, the grounded metal cover automatically isolates the live medium- and high-voltage areas from the maintenance personnel, ensuring safety. Furthermore, the metal cover, which rotates between a first position and a second position, is coupled with at least two elastic latches. When the power module is detached, the metal cover is restrained in the first position by the at least two elastic latches, preventing accidental opening of the metal cover or the opening. Furthermore, when the power module is placed into the accommodating space and mounted on the accommodating seat, the at least two elastic latches engage with the power module, preventing it from falling off or separating. On the other hand, if the power module is to be removed, at least two elastic clips must be simultaneously released to release the power module, allowing the power module to be removed from the receiving seat. In this way, the safety device can further ensure the maintenance safety of the power module and effectively enhance the competitiveness of the product.

[0085] This case can be modified in various ways by those skilled in the art, but all of them are within the scope of protection of the appended claims.

Claims

1. A safety device for a medium and high voltage system power module, characterized in that: include: A cabinet includes a receiving seat, the receiving seat forming a receiving space, the receiving seat being connected to a medium voltage live area, and the receiving seat having an opening; a power module, detachably disposed in the accommodating seat through the opening of the accommodating seat, so as to be electrically connected to the medium-voltage live area; and A metal cover is pivotally connected to an upper edge of the accommodating seat and is grounded, wherein when the metal cover is in a first position, it closes the opening and simultaneously shields the medium-voltage live area. The power module can push the metal cover through the opening, so that the metal cover pivots to a second position and abuts the top surface of the power module. When the power module is placed in the accommodating space and installed on the accommodating seat, it forms an electrical connection with the medium-voltage live area. When the power module is detached from the accommodating seat, the metal cover rotates to the first position, closing the opening to shield the medium-voltage live area.

2. The medium and high voltage system power module safety device according to claim 1, characterized in that: The device also includes at least two elastic buckles which are spaced opposite to the metal cover plate and adjacent to the opening and are assembled to limit the metal cover plate to the first position.

3. The medium and high voltage system power module safety device according to claim 2, characterized in that: The at least two elastic buckles are arranged along a side edge of the opening and spatially opposite to a side edge of the metal cover.

4. The medium and high voltage system power module safety device according to claim 3, characterized in that: The at least two elastic buckles are separated from each other.

5. The medium and high voltage system power module safety device according to claim 2, characterized in that: Each of the elastic buckles includes a hook and an elastic member, wherein the elastic member constantly presses against the hook so that the hook protrudes toward the receiving seat, and when the metal cover rotates to the first position, the hook restricts the metal cover from rotating to the second position.

6. The medium and high voltage system power module safety device according to claim 5, characterized in that: Each of the elastic buckles further includes an operating portion connected to the hook and the elastic member, which is constantly pushed toward the opening by the elastic member, and is assembled to drive the hook to push against the elastic member, so that the hook is separated from the path of the metal cover plate rotating from the first position to the second position.

7. The medium and high voltage system power module safety device according to claim 6, characterized in that: When the power module is placed into the accommodating space through the opening and installed in the accommodating seat, the operating parts of the at least two elastic clips are driven by the power module, so that the hooks of the at least two elastic clips are disengaged from the path of the metal cover plate rotating from the first position to the second position, thereby facilitating the power module to push against the metal cover plate and rotate to the second position.

8. The medium and high voltage system power module safety device according to claim 6, characterized in that: After the power module is placed into the accommodating space through the opening and installed on the accommodating seat, the operating portion of the at least two elastic clips engages with a front end of the power module and prevents the power module from being separated from the accommodating seat.

9. The medium and high voltage system power module safety device according to claim 6, characterized in that: The operating portions of the at least two elastic buckles are both forced to separate from the opening and are no longer engaged with the front end of the power module, so that the power module is allowed to separate from the accommodating seat through the opening.

10. The medium and high voltage system power module safety device according to claim 1, characterized in that: The accommodating seat includes a first connecting member, which is arranged between the accommodating seat and the medium-voltage live area. The power module includes a second connecting member, which is arranged at a rear end of the power module. When the power module is placed in the accommodating space and installed on the accommodating seat, the first connecting member engages with the second connecting member, and the power module forms an electrical connection with the medium-voltage live area.

11. The medium and high voltage system power module safety device according to claim 10, characterized in that: The power module includes a handle, which is arranged at a front end of the power module and is exposed from the opening when the power module is placed in the accommodating space and installed on the accommodating seat.

12. The medium and high voltage system power module safety device according to claim 11, characterized in that: When the handle is forced to drive the power module to separate from the accommodating seat, the first connecting member is separated from the second connecting member, thereby interrupting the electrical connection between the power module and the medium-voltage live area.

13. The medium and high voltage system power module safety device according to claim 10, characterized in that: The first connector and the second connector are respectively a male connector and a female connector, wherein the first connector is arranged on a circuit board and protrudes from the outer edge of the circuit board. When the rear end of the power module is close to the outer edge of the circuit board, the first connector and the second connector engage with each other to form an electrical connection.

14. The medium and high voltage system power module safety device according to claim 1, characterized in that: The cabinet includes at least one fixing hole adjacent to the opening of the receiving seat, and the power module includes at least one fixing portion spatially opposite to the at least one fixing hole. After the power module is placed into the receiving space through the opening and installed in the receiving seat, the at least one fixing portion and the at least one fixing hole are engaged with each other through a locking member, thereby locking the power module to the cabinet.

15. The medium and high voltage system power module safety device according to claim 14, characterized in that: The at least one fixing portion includes two fixing portions respectively disposed at two diagonally opposite corners of the front end of the power module, and the locking element is a screw.

16. The medium and high voltage system power module safety device according to claim 1, characterized in that: The metal cover is pivotally connected to the upper edge of the accommodating seat through a pivoting element.

17. The medium and high voltage system power module safety device according to claim 16, characterized in that: The pivoting element is a hinge.

18. The medium and high voltage system power module safety device according to claim 1, characterized in that: The power module further includes an insulating section disposed between a front end of the power module and a rear end of the power module.

19. The medium and high voltage system power module safety device according to claim 1, characterized in that: The cabinet is grounded, the medium-voltage live area is accommodated in the cabinet, and the medium-voltage live area is insulated from the cabinet.

20. The medium and high voltage system power module safety device according to claim 1, characterized in that: The device also includes a control module, which is arranged in the cabinet and electrically connected to the medium voltage live area and the power module to form a solid-state transformer.

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