Shielded flywheel converter cabinet

Abstract

The utility model discloses a shielding anti -interference's flywheel converter cabinet body, through the division structure divides the cabinet body for power area and control area, realizes two area physical isolation, blocks the cross -region electromagnetic coupling while promoting space utilization. The division structure adopts the metal partition made of aluminium -zinc coated sheet or galvanized steel sheet, forms one -level area shielding, effectively absorbs the low -frequency magnetic field interference of strong electric component of power area, is equipped with at least one pull -out box in control area, and the box body shell adopts aviation aluminium alloy material and is equipped with the conductive coating in the joint, forms two -level box shielding, forms strong reflection to high -frequency electromagnetic radiation, realizes full -band electromagnetic protection. Power area and control area pass through the layout optimization component installation of division, and the pull -out box body design is convenient for maintaining, and shielding layer does not need to dismantle, and the cabinet frame, the plate assembly etc. adopt aluminium -zinc coated sheet or aviation aluminium alloy and are connected through riveting process, and cooperate directional threading hole structure, and further strengthen the anti -interference effect.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology for flywheel energy storage systems, and in particular to a shielded and interference-proof flywheel converter cabinet. Background Technology

[0002] In existing technologies, the traditional shielding design of flywheel converter cabinets, such as metal mesh, can obstruct airflow and reduce heat dissipation efficiency. Furthermore, if the control cabinet and power cabinet are integrated together to save space, electromagnetic interference issues may arise due to the compact installation.

[0003] Chinese Patent Publication No. CN214045459U discloses an anti-interference inverter housing, which includes a housing, an operation panel, a circuit board, and a shielding plate. The housing includes a body, wiring holes, mounting slots, a locking slot, and a shielding layer. The shielding layer is electroplated on the inner surface of the body and is an anti-electromagnetic interference metallic coating, thus giving the housing anti-interference properties. The circuit board substrate includes a locking slot and wiring grooves. Two wiring grooves are respectively located at both ends of the substrate, thereby separating the wiring of the inverter's output and input terminals, resulting in good anti-interference performance. The shielding plate is disposed on the substrate and located on the opposite side of the wiring grooves. The shielding plate has anti-interference properties; after the circuit board is locked inside the housing, the circuit board is located between the shielding layer of the housing and the shielding plate, thereby shielding interference signals from all directions and preventing the circuit board from being interfered with. However, the shielding structure in the prior art is a metal mesh shielding plate + conductive coating; it is only a single housing structure design, with limited shielding effect. For highly integrated flywheel converter cabinets, electromagnetic interference may occur between various electrical components, affecting the operation of the flywheel converter cabinet.

[0004] Therefore, it is necessary to design a shielded and interference-proof flywheel converter cabinet to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a shielded and interference-resistant flywheel converter cabinet, which solves problems such as electromagnetic interference and inconvenient maintenance in integrated cabinets, and achieves the effects of highly centralized functions, strong anti-interference ability, and high maintainability.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A shielded and interference-resistant flywheel converter cabinet includes a cabinet 100, which is divided into a power area 1 and a control area 2 by a partition structure. The power area 1 is used to install power components that provide operating power to the flywheel converter, and the control area 2 is used to install control components that control the operation of the flywheel converter. The control area 2 is provided with at least one pull-out box for installing the control components and for easy pull-out maintenance. The partition structure includes a partition frame and a metal partition 104 covering the partition frame. The outer shell of each pull-out box is made of aluminum alloy and the seams are provided with a conductive coating 31.

[0008] Preferably, the metal partition 104 is an aluminum-zinc coated sheet or a galvanized steel sheet; the aluminum alloy shell is made of aerospace aluminum alloy material.

[0009] Preferably, the cabinet 100 includes: a cabinet frame 101, a sealing plate assembly installed on the outside of the cabinet frame 101 by detachable bolts, and a cabinet door 103 hinged to the cabinet frame 101; the partition frame is formed by the main vertical beam 1011 and the main longitudinal beam 1013 of the cabinet 100, and the metal partition 104 is installed on the partition frame by detachable bolts; the cabinet frame 101, the sealing plate assembly, and the cabinet door 103 of the cabinet 100 are all made of aluminum-zinc coated steel sheet and / or aviation aluminum alloy, and are connected by riveting process.

[0010] Preferably, the power zone 1 is vertically divided into an upper zone, a middle zone and a lower zone, and a first safety protection isolation plate 16 is installed on the front side of each zone;

[0011] The upper region is horizontally equipped with a pre-charging unit assembly 11, and the middle region is vertically equipped with an inverter and rectifier assembly 12 integrating an inverter unit and a rectifier unit via a first isolation bracket 109; a filter 13 is installed on the front side of the lower region, and an input-side circuit breaker 14 and a surge protector 15 are installed on the rear side of the lower region; the first safety protection isolation plate 16 is provided with a hollow hole 161 corresponding to the on / off handle position of the input-side circuit breaker 14, and each of the first safety protection isolation plates 16 is provided with a handle 162.

[0012] Preferably, the control area 2 is provided with a first installation sub-area 25, a second installation sub-area 26 and a third installation sub-area 27 in a top-to-bottom direction. The at least one pull-out box includes a first pull-out box 21 and a second pull-out box 22 installed side by side in the first installation sub-area 25. The first pull-out box 21 integrates a flywheel management system module, and the second pull-out box 22 is equipped with a DC power supply module. A second safety protection isolation plate 202 is installed on the front side of the first installation sub-area 25.

[0013] Preferably, the control area 2 has a first sealing plate 30 installed horizontally alongside the pull-out box between the side of the cabinet 100 and the outermost pull-out box.

[0014] Preferably, the control area 2 is equipped with a UPS emergency power module 23 in the second installation sub-area 26, and a safety protection isolation component 24 is provided on the front side of the corresponding second installation sub-area 26. The safety protection isolation component 24 includes a sealed first protective plate 241 and a second protective plate 242 located on the left and right sides, and a third protective plate 243 with a grille located in the middle for the cooling fan inside the UPS emergency power module 23 to blow out heat.

[0015] Preferably, the third installation sub-area 27 is equipped with a fourth protective plate 244 near its front side, so that the third installation sub-area 27 is divided into front and rear areas; an electrical control component 28 is installed on the fourth protective plate 244; the electrical control component 28 is installed facing forward, the first pull-out cabinet 21 and the second pull-out cabinet 22 are installed facing backward with the second safety protection isolation plate 202 as the starting point, and the UPS emergency power module 23 is installed facing backward with the third protective plate 243 as the starting point.

[0016] Preferably, the bottom of the cabinet 100 is provided with a base mounting seat 1025, which is used to store the cabinet's wiring. The top surface of the base mounting seat 1025 has a first wire hole cover 291 for limiting the wiring to pass through in the power area 1 and the control area 2, respectively. The metal partition 104 is provided with a second wire hole cover 292.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. This utility model addresses the limitations of existing technologies such as the limited effectiveness of single shielding layers, the inability of single-material shielding to cover both high and low frequencies, the obstruction of airflow by traditional metal mesh shielding, and the maintenance difficulties caused by the shielding structure of high-speed flywheel converter cabinets. It employs a two-stage protection system of area isolation and enclosure shielding. The first stage of area shielding is formed by physically separating the power zone 1 and the control zone 2 using a metal partition 104. The high magnetic permeability of the metal material effectively absorbs low-frequency magnetic fields below 1kHz generated by the high-power components in the power zone, blocking cross-area electromagnetic coupling. The second stage of enclosure shielding is formed by a retractable enclosure in the control zone using an aluminum alloy shell with a conductive coating 31 at the seams. The high conductivity of the aluminum alloy provides strong reflection of high-frequency electromagnetic radiation above 1MHz, and the conductive coating eliminates electromagnetic gaps at the shell seams, ensuring shielding integrity and improving shielding effectiveness against high-frequency interference. The combined effect of these two stages of shielding significantly reduces electromagnetic interference between the high-power components in the power zone and the low-power components in the control zone, preventing malfunctions of the control components. Meanwhile, the combination of metal partitions and an aluminum alloy shell achieves full-band protection. The metal partitions shield against low-frequency magnetic fields, compensating for the weak shielding ability of aluminum alloy against low-frequency magnetic fields. The aluminum alloy shell and conductive coating provide effective shielding against high-frequency electromagnetic radiation. The combination of these two materials covers all frequency band interference, solving the frequency blind spot problem of traditional single metal shielding. In addition, the pull-out enclosure design enhances shielding and simplifies maintenance, allowing control components to be directly pulled out for inspection without disassembling the shielding layer, thus shortening maintenance time.

[0019] 2. This utility model further divides the power zone into three areas: upper, middle, and lower. Components or devices related to providing the main power are installed in these areas, corresponding to core functional modules such as pre-charging, inverter rectification, and filtering protection. Each component has a fixed installation position and is connected by detachable bolts. This structured layout allows maintenance personnel to quickly locate faulty components without touching unrelated components during disassembly and assembly. Furthermore, the first safety protection isolation plate physically separates the internal components from the external operating environment, forming a hard protective barrier. This further enhances the anti-interference effect by providing zoned shielding within the power zone. Each area also features an openable isolation plate, allowing for individual opening of the corresponding isolation plate during maintenance based on the fault location, without requiring the complete removal of the protective structure.

[0020] 3. The control area 2 of this utility model is divided into a first mounting sub-area 25, a second mounting sub-area 26, and a third mounting sub-area 27 from top to bottom, forming a layered layout that helps to physically isolate modules with different functions. In electromagnetic interference scenarios, the electromagnetic radiation frequencies and intensities generated by electrical modules with different functions vary. The layered design can prevent electromagnetic interference from high-power, high-radiation modules from directly propagating to low-power, interference-sensitive module areas, and initially reduces electromagnetic coupling interference between modules from a spatial layout perspective, providing a good foundation for subsequent shielding measures.

[0021] In the first installation sub-area 25, multiple first support beams 201, spaced apart between the first auxiliary installation longitudinal beam 105 and the third auxiliary installation longitudinal beam 107 on the right side of the cabinet frame, securely support the first and second pull-out enclosures with detachable bolts. This ensures close contact between the enclosures and the surrounding structure, maintains shielding continuity, prevents electromagnetic wave leakage and external interference intrusion, and the spaced beams facilitate heat dissipation, preventing additional electromagnetic interference caused by performance degradation due to temperature increases, thus achieving a balance between heat dissipation and shielding. The first pull-out enclosure 21 independently integrates a flywheel management system module (FMS), preventing the propagation of its generated electromagnetic interference and interference from other modules, improving the anti-interference capability of the control area. The second pull-out enclosure 22 independently installs a 110V DC power supply module, reducing electromagnetic interference between the power supply module and other control components, ensuring a stable power supply, and improving electromagnetic compatibility and shielding effectiveness. Furthermore, the second safety protection isolation plate 202 not only blocks the external transmission of electromagnetic radiation from the internal modules and the entry of external interference but also facilitates operation during maintenance, ensuring continuous shielding effectiveness. Moreover, the multiple first support beams 201 are arranged at intervals, which not only provides sufficient support for the pull-out cabinet, but also provides a good heat dissipation channel for the cabinet. Attached Figure Description

[0022] Figure 1 This is the front view of the present invention;

[0023] Figure 2 This is one of the three-dimensional structural diagrams of the cabinet door of this utility model in the open state;

[0024] Figure 3 This is the second three-dimensional structural diagram of the cabinet door of this utility model in the open state;

[0025] Figure 4 This is one of the structural schematic diagrams of this utility model, which conceals some components;

[0026] Figure 5 This is the second structural schematic diagram of the present invention, which conceals some components;

[0027] Figure 6 This is the third structural schematic diagram of the present invention, which conceals some components;

[0028] Figure 7 This is a structural diagram of the first and second pull-out boxes;

[0029] Figure 8 for Figure 1 A structural diagram showing the first and second safety protection isolation plates removed from the original structure;

[0030] Figure 9The fourth structural diagram of this utility model conceals some components. Detailed Implementation

[0031] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 9 As shown, the present invention discloses a shielded and interference-resistant flywheel converter cabinet, comprising a cabinet 100. The cabinet 100 includes a cabinet frame 101, a sealing plate assembly mounted on the outside of the cabinet frame 101 by detachable bolts, and a cabinet door 103 hinged to the cabinet frame 101. The cabinet frame 101 is composed of six main vertical beams 1011, four main horizontal beams 1012, and six main longitudinal beams 1013. The sealing plate assembly includes a left sealing plate 1021, a right sealing plate 1022, a top sealing plate 1023, a rear sealing plate 1024, and a base mounting seat 1025, all mounted on the cabinet frame 101 by detachable bolts. The cabinet 100 is divided into a power area 1 on the left and a control area 2 on the right by a metal partition 104. Figure 1 The area is enclosed in red. Power zone 1 is used to install the power components that provide operating power to the flywheel converter, and control zone 2 is used to control the operation of the flywheel converter. The two main vertical beams 1011 and the two main longitudinal beams 1013 in the middle form a partition frame. The metal partition 104 is installed on the partition frame by detachable bolts. The partition frame and the metal partition 104 form a partition structure.

[0033] The metal partition 104 acts as a separator, physically separating the power zone 1 from the control zone 2, forming an electromagnetic blocking wall. This serves as the first-level physical barrier, effectively blocking cross-regional electromagnetic coupling. Specifically, the metal partition 104 is made of aluminum-zinc coated steel or galvanized steel, such as corrosion-resistant aluminum-zinc coated steel. The control zone 2 contains at least one pull-out enclosure for installing the control components and facilitating easy maintenance. Each pull-out enclosure has an aluminum alloy shell with a conductive coating 31 at the seams, forming a enclosure-level Faraday cage structure. This serves as the second-level physical barrier, significantly reducing external electromagnetic radiation compared to traditional single-layer shielding solutions. The conductive coating at the seams enhances the continuity of electromagnetic shielding, ensuring the aluminum alloy shell forms a complete Faraday cage.

[0034] As described above, this case addresses the limitations of existing technologies such as the limited effectiveness of single shielding layers, the inability of single-material shielding to cover both high and low frequencies, the obstruction of airflow by traditional metal mesh shielding, and the maintenance difficulties caused by the shielding structure of high-speed flywheel converter cabinets. It employs a two-stage protection approach: area isolation and enclosure shielding. The first stage of area shielding is formed by physically separating the power zone 1 and control zone 2 using a metal partition 104. The high magnetic permeability of the metal material effectively absorbs low-frequency magnetic fields below 1kHz generated by the high-power components in the power zone, blocking cross-area electromagnetic coupling. The second stage of enclosure shielding is formed by a retractable enclosure in the control zone using an aluminum alloy shell with a conductive coating 31 at the seams. The high conductivity of aluminum alloy provides strong reflection of high-frequency electromagnetic radiation above 1MHz, and the conductive coating eliminates electromagnetic gaps at the shell seams, ensuring shielding integrity and improving shielding effectiveness against high-frequency interference. The combined effect of these two stages of shielding significantly reduces electromagnetic interference between the high-power components in the power zone and the low-power components in the control zone, preventing malfunctions of the control components. Meanwhile, the combination of metal partitions and an aluminum alloy shell achieves full-band protection. The metal partitions shield against low-frequency magnetic fields, compensating for the weak shielding ability of aluminum alloy against low-frequency magnetic fields. The aluminum alloy shell and conductive coating provide effective shielding against high-frequency electromagnetic radiation. The combination of these two materials covers all frequency band interference, solving the frequency blind spot problem of traditional single metal shielding. In addition, the pull-out enclosure design enhances shielding and simplifies maintenance, allowing control components to be directly pulled out for inspection without disassembling the shielding layer, thus shortening maintenance time.

[0035] In a preferred embodiment, the metal partition 104 is made of aluminum-zinc coated steel sheet or galvanized steel sheet; the aluminum alloy outer shell is made of aerospace-grade aluminum alloy. Thus, the metal partition is made of aluminum-zinc coated steel sheet or galvanized steel sheet, both of which have good conductivity, corrosion resistance, and mechanical strength. This effectively achieves electromagnetic shielding and ensures that the cabinet is not easily damaged during long-term use, extending its service life. The aluminum alloy outer shell of the pull-out cabinet is made of aerospace-grade aluminum alloy, which has advantages such as low density, high strength, and corrosion resistance. While ensuring sufficient strength to protect the internal control components, it also reduces the weight of the cabinet, facilitating installation and pull-out operation.

[0036] In a preferred embodiment, the cabinet frame 101, sealing plate assembly, and cabinet door 103 of the cabinet 100 are all made of aluminum-zinc coated steel sheet and / or aerospace-grade aluminum alloy, and are connected by riveting. In this way, the aluminum-zinc coated steel sheet has good conductivity, enabling rapid and uniform distribution of induced current. Its surface protective film prevents oxidation and corrosion, ensuring stable conductivity and thus providing reliable shielding over a long period. Aerospace-grade aluminum alloy has high conductivity, enabling rapid formation of a reverse magnetic field to cancel interference, and its high strength reduces cabinet deformation, maintaining conductive continuity. Its low density also reduces cabinet weight. The combination of these two materials complements each other, expands the shielding frequency band, and achieves an optimized balance between shielding effect and cost. Furthermore, the riveting process ensures that all cabinet components form a continuous conductive shield, and the tight contact between the rivets and components reduces contact resistance, allowing the induced current to flow smoothly and ensuring stable and effective shielding. It also enhances the structural stability of the cabinet, prevents deformation of the shielding layer, maintains the integrity and continuity of the shielding layer, and can adapt to harsh environments, ensuring stable electromagnetic shielding protection throughout the entire service life of the cabinet.

[0037] like Figure 4 and Figure 5 As shown, furthermore, one or more first auxiliary mounting longitudinal beams 105 are connected in the middle of the partition frame to enhance strength or facilitate component connection and installation. Multiple second auxiliary mounting longitudinal beams 106, also for enhancing strength or facilitating component connection and installation, are connected between the front and rear main vertical beams 1011 on the left side of the cabinet frame 101. Multiple third auxiliary mounting longitudinal beams 107, also for enhancing strength or facilitating component connection and installation, are connected between the front and rear main vertical beams 1011 on the right side of the cabinet frame 101. One or more first auxiliary mounting crossbeams 1081, also for enhancing strength or facilitating component connection and installation, are connected between the left and middle main vertical beams 1011 on the rear side of the cabinet frame 101. One or more second auxiliary mounting crossbeams 1082 are connected between the right and middle main vertical beams 1011 on the rear side of the cabinet frame 101. In this way, the strength of the cabinet frame is enhanced while facilitating the installation of various components using bolts.

[0038] As a specific implementation method, such as Figure 1 , 2 As shown in Figures 4-6, the power zone 1 is vertically divided into an upper region, a middle region, and a lower region, and each region has a first safety protection isolation plate 16 on its front side that can be opened for easy inspection and maintenance as well as for protection and isolation.

[0039] The power zone 1 has a pre-charging unit assembly 11 horizontally mounted in its upper region via a second auxiliary mounting beam 106 and a first auxiliary mounting beam 105, which are symmetrically arranged on the left and right sides.

[0040] The power zone 1 has an inverter-rectifier assembly 12, integrating an inverter unit and a rectifier unit, mounted in its central region via a second auxiliary mounting beam 106. The side of the inverter-rectifier assembly 12 is detachably connected to the second auxiliary mounting beam 106 and the first auxiliary mounting beam 1081 via bolts to complete the installation. Furthermore, considering the large size of the inverter-rectifier assembly 12, a vertical first reinforcing plate 1091 is connected between a pair of adjacent second auxiliary mounting beams 106 in the cabinet frame 101. A first reinforcing support beam 1092 connects the symmetrical first auxiliary mounting longitudinal beams 105. The bottom front side of the inverter rectifier assembly 12 is detachably connected to the first reinforcing support beam 1092 by bolts. Two first reinforcing support longitudinal beams 1093 are also connected between the first reinforcing support beam 1092 and the first auxiliary mounting beam 1081 located symmetrically on the rear side. This facilitates the fixation of each part of the inverter rectifier assembly 12 by the frame, ensuring its installation stability. All beams are installed using detachable bolts, making disassembly and maintenance convenient. Furthermore, the two first reinforcing support longitudinal beams 1093 connect to the left and right sides of the bottom of the inverter rectifier assembly 12. The bottom of the inverter rectifier assembly 12 has a hollow structure, which serves both as support and facilitates heat dissipation. The first reinforcing support beam 1092 and the two first reinforcing support longitudinal beams 1093 form a hollow first isolation bracket 109, supporting and isolating the inverter rectifier assembly 12.

[0041] The power zone 1 has a filter 13, an input-side circuit breaker 14, and a surge protector 15 installed in its lower region. The filter 13 is mounted on the top of the base mounting seat 1025 with detachable bolts. A transverse mounting plate 110 connects the first auxiliary mounting beam 105 and the second auxiliary mounting beam 106, and the input-side circuit breaker 14 and the surge protector 15 are both mounted on the transverse mounting plate 110 with bolts. In addition, in a specific implementation, the power supply lines for high-voltage components such as the pre-charging unit assembly 11, the inverter rectifier assembly 12, and the filter 13 in the power zone, such as high-voltage cables and AC busbars, are routed through the gap between the second auxiliary mounting beam 106 and the first auxiliary mounting beam 1081 inside the power zone. The hollow structure of the first reinforcing support beam 1093 and the first isolation bracket 109 not only supports the components but also provides space for the high-voltage cables to pass through.

[0042] As described above, this solution further divides the power zone into three areas: upper, middle, and lower. Components or devices related to providing the main power are installed in these zones, corresponding to core functional modules such as pre-charging, inverter rectification, and filtering protection. Each component has a fixed installation position and is connected by detachable bolts. This structured layout allows maintenance personnel to quickly locate faulty components without touching unrelated components during disassembly or assembly. Furthermore, the first safety protection isolation plate physically separates the internal components from the external operating environment, forming a hard protective barrier. This further enhances the anti-interference effect by providing zoned shielding within the power zone. Each area features an openable isolation plate, allowing for individual opening of the corresponding isolation plate based on the fault location during maintenance, without requiring the complete removal of the protective structure. For example, when maintaining the upper pre-charging unit components, only the top first safety isolation plate needs to be opened, without affecting the protection of the middle inverter rectification components. Combined with the detachable bolt-connected component installation method, this further shortens maintenance preparation time and improves maintenance efficiency. The cabinet frame forms a rigid structure through main longitudinal beams, main transverse beams, multiple sets of auxiliary mounting beams, and reinforcing plates. Combined with the hollow design of the first isolation bracket, this ensures the stable installation of heavy components such as the inverter rectifier assembly, reducing connection loosening caused by vibration. Furthermore, the hollow structure at the bottom and the partitioned layout create natural airflow channels, accelerating heat dissipation from power devices like the inverter rectifier assembly. Compared to existing technologies where components are directly attached to the cabinet, this improves heat dissipation efficiency, effectively addresses the overheating risks of high-power equipment during long-term operation, and extends the lifespan of core components. This strengthens structural stability and heat dissipation performance, ensuring equipment lifespan. The unified cabinet frame and modular installation method, with all components connected by bolts, allows for pre-assembly and rapid splicing of components during production, reducing assembly errors.

[0043] like Figure 1 and Figure 2 As shown, in a preferred embodiment, the first safety protection isolation plate 16 has a perforated hole 161 at the position of the on / off handle of the input side circuit breaker 14, allowing the on / off handle to extend outside the plate for quick and safe on / off operation. Furthermore, each first safety protection isolation plate 16 is equipped with a handle 162 for easy opening by personnel. Thus, by pre-reserving the perforated hole 161 only at the on / off handle of the input side circuit breaker, it ensures quick on / off operation in emergencies (without disassembling the isolation plate) while preventing direct contact with other components, reducing the risk of accidental activation.

[0044] like Figures 4 to 7As shown, the control area 2 is provided with a first installation sub-area 25, a second installation sub-area 26, and a third installation sub-area 27 sequentially from top to bottom. The at least one pull-out box includes a first pull-out box 21 and a second pull-out box 22 installed side-by-side in the first installation sub-area 25. In this case, the control area 2 has multiple first support beams 201 installed between the first auxiliary installation longitudinal beam 105 of its first installation sub-area 25 and the third auxiliary installation longitudinal beam 107 located on the right side of the cabinet frame. The first pull-out box 21 and the second auxiliary installation longitudinal beam 26 are also provided with support beams 201. Two pull-out boxes 22 are mounted on the first support beam 201 by detachable bolts; multiple first support beams 201 are arranged at intervals; in addition, a second safety protection isolation plate 202 that can be opened for easy inspection and maintenance and to achieve protective isolation is installed in front of the first installation sub-area 25; wherein, the first pull-out box 21 integrates a flywheel management system module (FMS module), and the second pull-out box 22 is equipped with a 110V DC power supply module that provides a stable low-voltage DC power supply for all electrical control components in the control area 2.

[0045] As described above, control area 2 is divided into a first installation sub-area 25, a second installation sub-area 26, and a third installation sub-area 27 from top to bottom, forming a layered layout that facilitates physical isolation of modules with different functions. In electromagnetic interference scenarios, the electromagnetic radiation frequencies and intensities generated by electrical modules with different functions vary. The layered design can prevent electromagnetic interference from high-power, high-radiation modules from directly propagating to low-power, interference-sensitive module areas, thus initially reducing electromagnetic coupling interference between modules from a spatial layout perspective and providing a good foundation for subsequent shielding measures.

[0046] In the first installation sub-area 25, multiple first support beams 201, spaced apart between the first auxiliary installation longitudinal beam 105 and the third auxiliary installation longitudinal beam 107 on the right side of the cabinet frame, securely support the first and second pull-out enclosures with detachable bolts. This ensures close contact between the enclosures and the surrounding structure, maintains shielding continuity, prevents electromagnetic wave leakage and external interference intrusion, and the spaced beams facilitate heat dissipation, preventing additional electromagnetic interference caused by performance degradation due to temperature increases, thus achieving a balance between heat dissipation and shielding. The first pull-out enclosure 21 independently integrates a flywheel management system module (FMS), preventing the propagation of its generated electromagnetic interference and interference from other modules, improving the anti-interference capability of the control area. The second pull-out enclosure 22 independently installs a 110V DC power supply module, reducing electromagnetic interference between the power supply module and other control components, ensuring a stable power supply, and improving electromagnetic compatibility and shielding effectiveness. Furthermore, the second safety protection isolation plate 202 not only blocks the external transmission of electromagnetic radiation from the internal modules and the entry of external interference but also facilitates operation during maintenance, ensuring continuous shielding effectiveness. Moreover, the multiple first support beams 201 are arranged at intervals, which not only provides sufficient support for the pull-out cabinet, but also provides a good heat dissipation channel for the cabinet.

[0047] like Figure 1 and Figure 2 As shown, in a preferred embodiment, a first sealing plate 30, installed horizontally alongside the pull-out box, is provided between the side of the cabinet 100 and the outermost pull-out box in the control area 2. This ensures that the gap between the second pull-out box 22 and the right side of the cabinet 100 is also sealed. Thus, the installation of the first sealing plate, horizontally alongside the pull-out box, between the side of the cabinet and the outermost pull-out box in the control area ensures that the gap between the second pull-out box and the right side of the cabinet is sealed, preventing dust and debris from entering the control area. It also provides some electromagnetic shielding, reducing the impact of external interference on the components within the control area.

[0048] Furthermore, such as Figure 6 and Figure 8 as well as Figure 9As shown, in the second installation sub-area 26, the control area 2 is bolted to a UPS emergency power module 23 via a first supporting isolation plate 203. A safety protection isolation component 24 is installed in front of the second installation sub-area 26. The safety protection isolation component 24 includes a sealed first protective plate 241 and a second protective plate 242 on the left and right sides, and a grilled third protective plate 243 in the middle for the cooling fan inside the UPS emergency power module 23 to dissipate heat. Thus, the first protective plate 241, second protective plate 242, and third protective plate 243 of the safety protection isolation component 24 form a comprehensive shielding protection for the second installation sub-area 26. The sealed protective plates on the left and right sides effectively block electromagnetic interference from the sides, preventing external electromagnetic radiation from entering the area and affecting the normal operation of the UPS emergency power module. They also prevent electromagnetic radiation generated by the UPS emergency power module from leaking to the sides, reducing interference to the surrounding environment and other equipment. The grilled third protective plate 243 in the middle ensures both heat dissipation and shielding effectiveness. UPS emergency power modules generate a significant amount of heat during operation, requiring effective heat dissipation measures to ensure stable performance. The grille design allows for airflow, enabling the hot air blown out by the internal cooling fan of the UPS emergency power module to escape smoothly, achieving good heat dissipation.

[0049] like Figure 2 and Figure 8 as well as Figure 9 As shown, the third installation sub-area 27 has a fourth protective plate 244 installed near its front side, dividing the third installation sub-area 27 into front and rear areas. An electrical control component 28 is installed on the fourth protective plate 244. The electrical control component 28 faces forward, while the first pull-out cabinet 21 and the second pull-out cabinet 22 are installed rearward, starting from the second safety protection isolation plate 202. The UPS emergency power module 23 is installed rearward, starting from the third protective plate 243. Thus, in an electromagnetic environment, if the electromagnetic radiation generated by each module directly propagates to each other, it will form complex electromagnetic coupling, increasing the intensity and complexity of interference. The isolation provided by the fourth protective plate reduces this direct electromagnetic coupling, lowers the probability of interference propagation between modules, and provides a good foundation for subsequent shielding measures. Furthermore, different installation orientations change the electromagnetic field distribution around the modules. Front-rear orientation installation allows the electromagnetic fields generated by each module to be spatially staggered, reducing the overlapping area of ​​the electromagnetic fields. By optimizing the electromagnetic field distribution, the electromagnetic coupling between modules is reduced, improving the anti-interference capability of the entire control area. For example, when the electrical control component 28 is working in the forward direction, the electromagnetic field it generates mainly propagates forward, while the first pull-out cabinet 21, the second pull-out cabinet 22, and the UPS emergency power module 23, which are installed in the rear, are less directly affected, thus ensuring the normal operation of each module.

[0050] like Figure 2 and Figure 6 As shown, in one specific implementation, the base mounting base 1025 is used to store the wiring used in the flywheel converter cabinet, and has one or more first wiring hole covers 291 on its top surface in both the power area and the control area for limiting the wiring to pass through. The metal partition 104 has a second wiring hole cover 292. Thus, the base mounting base 1025 can serve as a wiring storage compartment, centrally storing the strong and weak current cables inside the cabinet, such as the strong current cables in the power area and the signal lines in the control area, avoiding tangling and wear caused by the wiring being randomly stacked at the bottom of the cabinet. The separate first wiring hole covers 291 in the power area and the control area allow for directional separation of strong current lines passing through holes in the power area and weak current lines passing through holes in the control area, avoiding cross-interference between strong and weak current lines, especially reducing interference between weak current signals in the control area and strong current signals in the power area. At the same time, the covers provide limiting protection for the wiring, reducing loosening of wiring interfaces due to cabinet vibration and extending the service life of the wiring. The base mounting base achieves wiring standardization and anti-interference through wiring storage and directional wiring. The second wiring hole cover 292 is provided so that the lines / wiring harnesses of the electrical control components 28 in the control area can be limited to pass through into the power area. This retains the isolation function of the partition (to prevent the lines from being unable to connect across areas when there is no hole) and enables the necessary line interaction between the two areas through directional wiring.

[0051] As described above, the base mounting bracket 1025 serves as a cable storage compartment, centrally storing both high-voltage and low-voltage cables inside the cabinet. This prevents cables from being randomly stacked at the bottom of the cabinet. Centralized storage fixes the relative positions of the cables, reducing disordered electromagnetic coupling and lowering the probability of interference propagation at a physical level. By opening first cable hole covers 291 in the power area and control area respectively, high-voltage cables exit through the power area holes, and low-voltage cables exit through the control area holes, avoiding crossing of high-voltage and low-voltage cables and preventing cross-interference and electromagnetic induction interference. The first cable hole covers 291 provide limiting protection for the cables, reducing the loosening of cable interfaces caused by cabinet vibration. The locally stable cable connection ensures accurate signal transmission, reduces interference caused by poor contact, and further improves the system's anti-interference capability. The second wiring hole cover 292 facilitates the routing of electrical control components 28 in the control area to the power area, thus preserving the isolation function of the metal partition 104 while enabling necessary line interaction between the two areas. Furthermore, the second wiring hole cover allows the lines to be connected along a predetermined path through directional wiring, preventing the shielding effect from being reduced due to lines randomly passing through the partition.

[0052] In summary, this utility model discloses a shielded and interference-resistant flywheel converter cabinet. The cabinet is divided into a power zone and a control zone through a partition structure, achieving physical isolation between the two zones. This improves space utilization while blocking cross-zone electromagnetic coupling. The partition structure uses metal partitions made of aluminum-zinc coated steel or galvanized steel to form primary area shielding, effectively absorbing low-frequency magnetic field interference generated by the high-power components in the power zone. The control zone has at least one pull-out enclosure with an aerospace-grade aluminum alloy shell and conductive coating at the seams, forming secondary enclosure shielding. This provides strong reflection of high-frequency electromagnetic radiation, achieving full-band electromagnetic protection. The power zone and control zone optimize component installation through partitioned layout. The pull-out enclosure design facilitates maintenance without disassembling the shielding layer. The cabinet frame and sealing plate components are made of aluminum-zinc coated steel and / or aerospace-grade aluminum alloy and connected by riveting, combined with a directional wiring hole structure, further enhancing the anti-interference effect. This utility model solves the problems of electromagnetic interference and inconvenient maintenance in integrated cabinets, achieving centralized functions, strong anti-interference capability, and efficient maintenance.

[0053] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A shielded and interference-resistant flywheel converter cabinet, comprising a cabinet (100), characterized in that, The cabinet (100) is divided into a power area (1) and a control area (2) by a partition structure; the power area (1) is used to install the power components that provide operating power for the flywheel converter, and the control area (2) is used to install the control components that control the operation of the flywheel converter. The control area (2) is provided with at least one pull-out box for installing the control components and for easy pull-out maintenance; the partition structure includes a partition frame and a metal partition (104) covering the partition frame. The outer shell of each pull-out box is made of aluminum alloy and the seams are provided with a conductive coating (31).

2. The flywheel converter cabinet according to claim 1, characterized in that, The metal partition (104) is made of aluminum-zinc coated steel or galvanized steel; the aluminum alloy shell is made of aerospace aluminum alloy.

3. The flywheel converter cabinet according to claim 1, characterized in that, The cabinet (100) includes: a cabinet frame (101), a sealing plate assembly installed outside the cabinet frame (101) by detachable bolts, and a cabinet door (103) hinged to the cabinet frame (101); the partition frame is formed by the main vertical beam (1011) and the main longitudinal beam (1013) of the cabinet (100), and the metal partition (104) is installed on the partition frame by detachable bolts; the cabinet frame (101), sealing plate assembly, and cabinet door (103) of the cabinet (100) are all made of aluminum-zinc coated sheet and / or aviation aluminum alloy, and are connected by riveting process.

4. The flywheel converter cabinet according to claim 1, characterized in that, The power zone (1) is vertically divided into an upper region, a middle region and a lower region, and a first safety protection isolation plate (16) is installed on the front side of each region; a pre-charging unit assembly (11) is installed horizontally in the upper region, and an inverter rectifier assembly (12) integrating an inverter unit and a rectifier unit is installed vertically in the middle region through a first isolation bracket (109); a filter (13) is installed on the front side of the lower region, and an input side circuit breaker (14) and a surge protector (15) are installed on the rear side of the lower region; the first safety protection isolation plate (16) has a hollow hole (161) corresponding to the on / off handle position of the input side circuit breaker (14), and each of the first safety protection isolation plates (16) has a handle (162).

5. The flywheel converter cabinet according to claim 1, characterized in that, The control area (2) is provided with a first installation sub-area (25), a second installation sub-area (26) and a third installation sub-area (27) in a top-to-bottom direction. The at least one pull-out box includes a first pull-out box (21) and a second pull-out box (22) installed side by side in the first installation sub-area (25). The first pull-out box (21) integrates a flywheel management system module, and the second pull-out box (22) is equipped with a DC power supply module. A second safety protection isolation plate (202) is installed on the front side of the first installation sub-area (25).

6. The flywheel converter cabinet according to claim 5, characterized in that, The control area (2) has a first sealing plate (30) installed horizontally alongside the pull-out box between the side of the cabinet (100) and the outermost pull-out box.

7. The flywheel converter cabinet according to claim 5 or 6, characterized in that, The control area (2) has a UPS emergency power module (23) installed in the second installation sub-area (26), and a safety protection isolation component (24) is provided on the front side of the corresponding second installation sub-area (26). The safety protection isolation component (24) includes a sealed first protective plate (241) and a second protective plate (242) located on the left and right sides, and a third protective plate (243) with a grille located in the middle for the cooling fan inside the UPS emergency power module (23) to blow out heat.

8. The flywheel converter cabinet according to claim 7, characterized in that, The third installation sub-area (27) has a fourth protective plate (244) installed near its front side to divide the third installation sub-area (27) into front and rear areas; an electrical control component (28) is installed on the fourth protective plate (244); the electrical control component (28) is installed facing forward, the first pull-out box (21) and the second pull-out box (22) are installed facing backward with the second safety protection isolation plate (202) as the starting point, and the UPS emergency power module (23) is installed facing backward with the third protective plate (243) as the starting point.

9. The flywheel converter cabinet according to claim 1, characterized in that, The cabinet (100) has a base mounting seat (1025) at the bottom. The base mounting seat (1025) is used to store the cabinet's wiring. Its top surface has a first wire hole cover (291) for the wiring to pass through in the power area (1) and control area (2), respectively. The metal partition (104) has a second wire hole cover (292).

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