Electrical cabinet

Abstract

The invention provides an electrical cabinet, and belongs to the technical field of electrical equipment, and the electrical cabinet comprises a first power cabinet and a second power cabinet which are arranged in a combined manner. The first power cabinet is provided with at least one first power chamber and a first wiring chamber; the first power chamber is used for placing a first power module; the second power cabinet is provided with at least one second power chamber and a second wiring chamber; the second power chamber is used for placing a second power module; the second power module and the first power module are connected through the conductive module; the at least one first power chamber and the at least one second power chamber are staggered up and down, the first wiring chamber and the second wiring chamber are communicated with each other and are located at the same horizontal height, and the conductive module is located in the first wiring chamber and the second wiring chamber. According to the invention, centralized and standardized layout of conductive connection among different numbers of power modules is realized, the installation and maintenance process of the conductive module is simplified, and rapid integration of a newly-added power cabinet is facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of power equipment, and more specifically, relates to an electrical cabinet. Background Art

[0002] The power cabinet is a core device in the power electronics system, mainly used to complete the conversion, control, and distribution of electric energy to ensure the safe and stable transmission of high-power electric energy to the load.

[0003] Currently, in scenarios such as large UPS power systems and data center computer rooms, multiple power cabinets need to be set up in parallel. Due to the different internal layouts of each power cabinet, the conductive connection forms between different power modules are complex and the distribution is chaotic. Summary of the Invention

[0004] An object of the present invention is to provide an electrical cabinet, aiming to solve the technical problems of complex conductive connection forms and chaotic distribution among multiple existing power cabinets.

[0005] To achieve the above object, the technical solution adopted by the present invention is: providing an electrical cabinet, including a first power cabinet and a second power cabinet arranged in parallel; The first power cabinet has at least one first power chamber and a first wiring chamber; the first power chamber is used to place the first power module; The second power cabinet has at least one second power chamber and a second wiring chamber; the second power chamber is used to place the second power module; the number of the second power modules is different from that of the first power modules, and the second power modules and the first power modules are connected through a conductive module; Wherein, at least one of the first power chambers is vertically offset from at least one of the second power chambers, the first wiring chamber and the second wiring chamber are in communication with each other and at the same horizontal height, and the conductive module is located in the first wiring chamber and the second wiring chamber.

[0006] In a possible implementation, at least one of the first power chambers is above the first wiring chamber, and at least one of the second power chambers is below the second wiring chamber; and / or At least one of the first power chambers is below the first wiring chamber, and at least one of the second power chambers is above the second wiring chamber.

[0007] In some embodiments, there are two first power chambers, which are divided into a first upper power chamber and a first lower power chamber; the first wiring chamber is located between the first upper power chamber and the first lower power chamber; There are two second power chambers, which are divided into an upper second power chamber and a lower second power chamber; the second wiring chamber is located between the upper second power chamber and the lower second power chamber; Among them, the lower first power chamber and the lower second power chamber have the same structure and are at the same horizontal height; the upper first power chamber and the upper second power chamber have the same structure and are at the same horizontal height.

[0008] In some embodiments, the first power module fills the lower first power chamber; The second power module fills the lower second power chamber and the upper second power chamber; or, the second power module fills the lower second power chamber and occupies part of the space of the upper second power chamber; the number of the second power modules in the lower second power chamber is greater than the number of the second power modules in the upper second power chamber.

[0009] In some embodiments, the conductive module includes a plurality of copper busbar modules; one set of copper busbar modules is provided in each of the first power cabinet and the second power cabinet; The copper busbar module includes a main path and a lower branch. The main path is horizontally arranged in the first wiring chamber / the second wiring chamber; the lower branch is vertically arranged in the first wiring chamber / the second wiring chamber, and the lower branch is connected to the first power module / the second power module in the lower second power chamber.

[0010] In some embodiments, the copper busbar module in the second power cabinet further includes an upper branch. The upper branch is vertically arranged in the second wiring chamber and is connected to the second power module in the upper second power chamber; Among them, the upper branch and the lower branch occupy all the vertical space of the second wiring chamber.

[0011] In some embodiments, the second power module occupies the bottom space of the upper second power chamber; the main path further has a connection position, and the connection position is connected to the second power module in the upper second power chamber; The lower branch occupies all the vertical space of the second wiring chamber / the first wiring chamber.

[0012] In some embodiments, the electrical cabinet further includes a switch module. The switch module is located in the upper first power chamber and is electrically connected to the first power module.

[0013] In a possible implementation manner, the first power cabinet further has a bottom power chamber, and a third power module is provided in the bottom power chamber.

[0014] In a possible implementation, the electrical cabinet further includes an output cabinet, and the output cabinet is arranged in parallel with the first power cabinet and the second power cabinet; the output cabinet has a third wiring chamber, and the third wiring chamber communicates with the first wiring chamber and the second wiring chamber and is at the same horizontal height.

[0015] The beneficial effects of the electrical cabinet provided by the present invention are as follows: Compared with the prior art, in the electrical cabinet of the present invention, by connecting the first wiring chamber and the second wiring chamber to each other and keeping the horizontal heights the same, the centralized and standardized layout of the conductive connections between different numbers of power modules (the first power module, the second power module) is realized. The conductive modules are located in the first wiring chamber and the second wiring chamber, and there is no need to cross multiple cabinets for complex wiring, reducing the installation difficulty and effectively solving the wiring chaos problem caused by structural differences in the traditional parallel cabinet system; In addition, the first wiring chamber and the second wiring chamber have the same height, simplifying the installation and maintenance process of the conductive modules, facilitating the operator to quickly locate and maintain, and reducing wiring errors or maintenance difficulties caused by spatial misalignment.

[0016] Furthermore, the connected first wiring chamber and second wiring chamber can be used as a general connection platform, facilitating the quick integration when adding a new power cabinet and supporting the flexible combination of different power modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of the electrical cabinet provided by the embodiment of the present invention; Figure 2 It is a schematic structural diagram of the first power cabinet of the electrical cabinet provided by the embodiment of the present invention; Figure 3 It is a schematic structural diagram of the second power cabinet of the electrical cabinet provided by the embodiment of the present invention.

[0019] In the figure: 1. First power cabinet; 11. First power chamber; 111. First upper power chamber; 112. First lower power chamber; 12. First wiring chamber; 13. Bottom power chamber; 2. Second power cabinet; 21. Second power chamber; 211. Second upper power chamber; 212. Second lower power chamber; 22. Second wiring chamber; 3. First power module; 4. Second power module; 5. Conductive module; 51. Main path; 511. Input main path; 512. Output main path; 52. Lower branch; 521. Input lower branch; 522. Output lower branch; 53. Upper branch; 6. Switch module; 7. Third power module; 8. Output cabinet; 81. Third wiring chamber. Detailed implementation manners

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The power cabinet is used to place power modules. The power modules are generally cuboid structures and are arranged in a matrix inside the power cabinet. Currently, in scenarios such as large UPS power systems and data center computer rooms, multiple power cabinets with different functions need to be set up in parallel. Since the specific functions of the multiple power cabinets are different, the number and models of the power modules inside each power cabinet are also different.

[0022] In the prior art, each power cabinet is generally independently designed, and after being set up in parallel, copper bars or busbars are used to conductively connect the power modules of different power cabinets. Due to the different internal layouts of each power cabinet, the conductive connection forms between different power modules are complex, the distribution is chaotic, the safety regulations protection requirement level is high, and the maintenance and repair operations are difficult.

[0023] To solve the above problems, please refer to Figures 1 to 3 together, and now the electrical cabinet provided by the present invention will be described. The electrical cabinet includes a first power cabinet 1 and a second power cabinet 2 which are set up in parallel; the first power cabinet 1 has at least one first power chamber 11 and a first wiring chamber 12; the first power chamber 11 is used to place the first power module 3; the second power cabinet 2 has at least one second power chamber 21 and a second wiring chamber 22; the second power chamber 21 is used to place the second power module 4; the number of the second power modules 4 is different from that of the first power modules 3, and the second power modules 4 and the first power modules 3 are connected through a conductive module 5.

[0024] Among them, at least one first power chamber 11 and at least one second power chamber 21 are vertically offset, the first wiring chamber 12 and the second wiring chamber 22 are in communication with each other and are at the same horizontal height, and the conductive module 5 is located in the first wiring chamber 12 and the second wiring chamber 22.

[0025] Specifically, both the first power module 3 and the second power module 4 are cuboid structures and are distributed in a rectangular array. The first power module 3 and the second power module 4 play different roles. The first power cabinet 1 places multiple first power modules 3 according to design requirements, and the second power cabinet 2 places multiple second power modules 4 according to design requirements.

[0026] Through the independent power chamber design for each power cabinet, it can flexibly adapt to power modules with different functions, models or capacities, meeting the diverse requirements of scenarios such as UPS and data centers.

[0027] Since the numbers of the first power module 3 and the second power module 4 are different, there will inevitably be a problem that the height positions of the first power chamber 11 and the second power chamber 21 are different, that is to say, at least one first power chamber 11 and at least one second power chamber 21 are vertically misaligned. Therefore, the placement heights of multiple first power modules 3 and multiple second power modules 4 are different.

[0028] To facilitate the conductive connection of power modules with different heights in multiple power cabinets, in this embodiment, a wiring chamber is partitioned in the inner cavity of each power cabinet. That is, the first power cabinet 1 has a first wiring chamber 12, and the second power cabinet 2 has a second wiring chamber 22. The first wiring chamber 12 and the second wiring chamber 22 are designed to be of the same height and are interconnected to form a unified wiring channel in the horizontal direction. The conductive module 5 (such as a copper bar or a bus bar) can be arranged in a straight line or a regular path, reducing cross-wiring.

[0029] It should be noted that the above-defined "same height design" or "at the same height" means that the top surfaces of each wiring chamber are approximately aligned in the height direction, rather than limiting that the top surfaces of each wiring chamber must be in the same horizontal plane.

[0030] Compared with the prior art, the electrical cabinet provided by the present invention realizes the centralized and standardized layout of the conductive connection between power modules with different numbers (the first power module 3 and the second power module 4) by interconnecting the first wiring chamber 12 and the second wiring chamber 22 and keeping them at the same horizontal height. The conductive module 5 is located in the first wiring chamber 12 and the second wiring chamber 22, without the need to cross-wire across multiple cabinets, reducing the installation difficulty and problems such as uneven impedance or poor heat dissipation caused by misaligned connection, effectively solving the wiring chaos caused by structural differences in the traditional parallel cabinet system and facilitating standardized installation.

[0031] In addition, the first wiring chamber 12 and the second wiring chamber 22 are of the same height, simplifying the installation and maintenance process of the conductive module 5. During maintenance, only the wiring chamber needs to be opened for operation, facilitating the operator to quickly locate and maintain, and reducing wiring errors or maintenance difficulties caused by spatial misalignment.

[0032] Furthermore, the connected first wiring chamber 12 and second wiring chamber 22 can serve as a general connection platform. When adding power cabinets with different functions in the future, only the design logic of the misaligned power chambers and the horizontal wiring chambers needs to be continued, enabling quick integration, reducing the difficulty of system expansion, and supporting flexible combinations of different power modules.

[0033] In some embodiments, between the first power chamber 11 and the first wiring chamber 12, and between the second power chamber 21 and the second wiring chamber 22, structures such as Figure 1 , Figure 2 and Figure 3 may be adopted. Refer to Figure 1 , Figure 2 and Figure 3 . At least one first power chamber 11 is located above the first wiring chamber 12, and at least one second power chamber 21 is located below the second wiring chamber 22; and / or, at least one first power chamber 11 is located below the first wiring chamber 12, and at least one second power chamber 21 is located above the second wiring chamber 22.

[0034] In the height direction of the electrical cabinet, at least one first power chamber 11 and at least one second power chamber 21 are staggered up and down, and there is an interval space. The first wiring chamber 12 and the second wiring chamber 22 are located within the interval space. That is to say, the first wiring chamber 12 and the second wiring chamber 22 are centrally arranged. When the heights of the power modules are inconsistent, through the up-and-down misaligned layout, the central location of each wiring chamber can flexibly allocate space, avoiding local waste caused by the aligned arrangement of the power modules.

[0035] As a centralized area for electrical connection, the wiring chamber can be separately strengthened for insulation protection and physically isolated from the heat sources and high-voltage electrical components of the power chamber, reducing the short-circuit risk. In addition, each wiring chamber can be designed as a general interface area to support the quick plugging and unplugging of the conductive module 5, facilitating the expansion or replacement of the power cabinet.

[0036] The conductive module 5 horizontally penetrates through each centralized wiring chamber. Whether it is the power module above or below, it can be connected with the shortest path layout of vertical + horizontal, reducing impedance and loss. Moreover, with each wiring chamber in the center, maintenance personnel can operate all cross-cabinet connections uniformly in the middle of the cabinet body, without having to climb high or bend down simultaneously to handle high and low cables.

[0037] In this embodiment, each power chamber is stratified by function, and each wiring chamber centrally acts as a "bridge", forming a three-dimensional stratified + horizontally penetrating topological structure, enabling the electrical connection of the electrical cabinet to have the optimal path, low loss, and high safety regulations.

[0038] Preferably, please refer to Figure 2 and Figure 3, on the basis of the above embodiments, there are two first power chambers 11, which are divided into a first upper power chamber 111 and a first lower power chamber 112; the first wiring chamber 12 is located between the first upper power chamber 111 and the first lower power chamber 112; there are two second power chambers 21, which are divided into a second upper power chamber 211 and a second lower power chamber 212; the second wiring chamber 22 is located between the second upper power chamber 211 and the second lower power chamber 212; wherein, the first lower power chamber 112 and the second lower power chamber 212 have the same structure and are at the same horizontal height; the first upper power chamber 111 and the second upper power chamber 211 have the same structure and are at the same horizontal height.

[0039] The first lower power chamber 112 and the second lower power chamber 212 have the same structure and are at the same horizontal height, the first upper power chamber 111 and the second upper power chamber 211 have the same structure and are at the same horizontal height, and in addition, the first wiring chamber 12 and the second wiring chamber 22 also have the same structure and are at the same horizontal height. That is to say, the inner cavity structure of the first power cabinet 1 is the same as that of the second power cabinet 2. It can be understood that the shell frame structure of the first power cabinet 1 is the same as that of the second power cabinet 2. Therefore, the shell frame structures of multiple parallel-connected power cabinets are the same. Only the corresponding power modules need to be installed according to the functions to be realized by the power cabinet.

[0040] The first power cabinet 1 and the second power cabinet 2 adopt exactly the same shell frame and inner cavity structure. In production, with unified molds and production lines, the shell frames, chamber partitions, installation holes, etc. of the power cabinets can be produced using the same set of molds, reducing customized processing and manufacturing costs. In application, the generalization of parts is realized. Accessories such as door locks, cooling fans, and guide rails can be completely interchanged, reducing the types of spare parts and simplifying supply chain management. During installation, only need to follow the same set of assembly processes to complete the assembly of the two power cabinets, improving production efficiency.

[0041] If the electrical cabinet needs to expand the third and fourth power cabinets, directly use cabinets with the same inner cavity structure, without the need to re-design the layout or adjust the existing wiring. If a certain power cabinet is damaged, it can be directly replaced with a cabinet of the same structure without modifying the conductive connection or support frame, shortening the downtime.

[0042] The shell frame structures of multiple parallel-connected power cabinets are the same, and the same heat dissipation method can also be adopted. For example, when adopting the heat dissipation scheme of "top air outlet + bottom air inlet", the heat dissipation paths of the two cabinets are exactly the same, avoiding local overheating caused by different structures.

[0043] If a large UPS power system or a data center computer room needs to assemble multiple electrical cabinets as described above, since the housing frame structures of multiple parallel-connected power cabinets are the same, during layout, only multiple housing frames need to be arranged side by side first, and then the corresponding power modules and conductive modules 5 can be assembled according to the functions to be achieved, which simplifies the layout and improves the on-site installation efficiency. Two adjacent rows of electrical cabinets can be arranged in a mirror image, that is, the two groups of electrical cabinets are arranged face to face, and an isolation space is left in the middle for easy operation and observation and maintenance.

[0044] In some embodiments, the above-mentioned first power module 3 and second power module 4 can adopt the arrangement method as Figure 1 shown, see Figure 1 , the first power module 3 fills the first lower power chamber 112; the second power module 4 fills the second lower power chamber 212 and the second upper power chamber 211; or, the second power module 4 fills the second lower power chamber 212 and occupies a part of the space of the second upper power chamber 211; the number of the second power modules 4 in the second lower power chamber 212 is greater than the number of the second power modules 4 in the second upper power chamber 211.

[0045] The first power module 3 fills the first lower power chamber 112, which can be understood as that the inner cavity structure of the first lower power chamber 112 is just suitable for placing multiple first power modules 3 distributed in a rectangular shape. The first power module 3 can be arranged only in the first lower power chamber 112, and the first upper power chamber 111 is empty or auxiliary equipment is placed. Therefore, the inner cavity structure of each power cabinet is determined based on the number and occupied volume of the first power module 3 to avoid space waste due to the large volume of the first lower power chamber 112.

[0046] The number of the second power modules 4 is more than that of the first power modules 3. According to the volume of the second lower power chamber 212, the corresponding number of the second power modules 4 is placed first, and then the remaining second power modules 4 are placed in the second upper power chamber 211. If the second power cabinet 2 requires a higher capacity, the double-layer arrangement can be flexibly expanded without increasing the cabinet size.

[0047] The first power module 3 is concentrated in the first lower power chamber 112, and most of the second power modules 4 are concentrated in the second lower power chamber 212. From the perspective of heat dissipation, the heat is concentrated in each lower power chamber, giving priority to ensuring the heat dissipation of the lower power chamber. There are fewer modules in the upper chamber and the heat is lower, so natural convection can occur.

[0048] From the perspective of the layout of the conductive module 5, the first power module 3 is concentratedly arranged in the first lower power chamber 112, which is convenient for large-current busbar connection, and the first wiring chamber 12 only needs to be connected downward, reducing the complexity of vertical wiring. The second wiring chamber 22 can be busbar-connected in layers (such as the main copper bar downward and the branch copper bar upward).

[0049] In some embodiments, the above-mentioned conductive module 5 may adopt a structure as shown in Figure 2 and Figure 3 . Refer to Figure 2 and Figure 3 . The conductive module 5 includes a plurality of copper bar modules; a set of copper bar modules are provided in each of the first power cabinet 1 and the second power cabinet 2; the copper bar module includes a main path 51 and a lower branch 52. The main path 51 is horizontally arranged in the first wiring chamber 12 / second wiring chamber 22; the lower branch 52 is vertically arranged in the first wiring chamber 12 / second wiring chamber 22, and the lower branch 52 is connected to the second power module 4 of the first power module 3 / second lower power chamber 212.

[0050] In terms of electrical connection performance, the copper bar module has a large cross-sectional area and a small resistance. The main path 51 is horizontally arranged to reduce the cross-cabinet transmission loss, and the lower branch 52 is vertically short-circuited to reduce the access impedance of the power module. The main path 51 serves as a common bus to ensure the balanced distribution of the current of the parallel power modules and avoid local overload.

[0051] In terms of structural strength, the copper bar module is fixed by bolts or welding, which is more vibration-resistant and resistant to short-circuit electrodynamic force than wire harnesses and is suitable for high-current scenarios.

[0052] In terms of heat dissipation method, the copper bar module is exposed in each wiring chamber and dissipates heat through air convection. The main path 51 can form a continuous heat dissipation surface due to its horizontal arrangement. The lower branch 52 can also conduct the heat of the power module to the main path 51, and the heat is concentratedly dissipated through the side wall of the cabinet or the radiator.

[0053] In terms of layout method, the wiring chambers of the two cabinets are directly connected by the horizontal main path 51, without additional transfer copper bars or cables, reducing the contact points. The lower branch 52 is vertically connected from the main path 51 to the power module, and the path is the shortest (especially suitable for the single-layer arrangement of the first power cabinet 1).

[0054] Specifically, the main path 51 includes an input main path 511 and an output main path 512, and the lower branch 52 includes an input lower branch 521 and an output lower branch 522. The input lower branch 521 is connected to the input main path 511, and the output lower branch 522 is connected to the output main path 512. For one power cabinet, the input main path 511, input lower branch 521, output lower branch 522, and output main path 512 are sequentially connected in series to form a loop. The connection of the input main path 511 and output main path 512 between the power cabinets is determined according to the series-parallel connection method of multiple power cabinets.

[0055] If there is a second power module 4 in the second upper power chamber 211, in some embodiments, the above-mentioned copper bar module may also adopt a structure as shown in Figure 3 . Refer to Figure 3, the copper bar module in the second power cabinet 2 further includes an upper branch 53, which is vertically arranged in the second wiring chamber 22 and is connected to the second power module 4 in the second upper power chamber 211; wherein, the upper branch 53 and the lower branch 52 occupy all the vertical space of the second wiring chamber 22, and the lower branch 52 is physically isolated from the upper branch 53 to avoid mutual interference.

[0056] The upper branch 53 is used to connect the second power module 4 in the second upper power chamber 211. The upper branch 53 is also divided into an input upper branch 53 and an output upper branch 53. The vertical height of the upper branch 53 is determined according to the number of the second power modules 4 in the second upper power chamber 211. Preferably, the second power modules 4 completely fill the second upper power chamber 211 and the second lower power chamber 212. That is to say, the inner cavity structure of the second upper power chamber 211 is determined based on the number and occupied volume of the remaining second power modules 4 (that is, the other second power modules 4 except the second power modules 4 in the second lower power chamber 212).

[0057] The second power module 4 connected by the upper branch 53 can be used as a thermal backup for the second power module 4 of the lower branch 52. When a certain lower-layer second power module 4 fails, the upper-layer second power module 4 automatically takes over the load to improve the system reliability. When the second power modules 4 of the same model are operated in parallel, the copper bar impedances of the upper and lower branches 52 are the same to ensure uniform current distribution and avoid overloading of a single module. In addition, if the system needs to be expanded, a new second power module 4 can be directly connected to the upper branch 53 without modifying the structure of the lower branch 52.

[0058] The upper branch 53 and the lower branch 52 can be distributed at intervals up and down with impedance matching to reduce the circulating current between the parallel second power modules 4. The main path 51 serves as a "common busbar" to ensure the voltage consistency between the upper second power modules 4 and the lower second power modules 4.

[0059] In another embodiment, the second power module 4 occupies the bottom space of the second upper power chamber 211; the main path 51 also has a connection position, and the connection position is connected to the second power module 4 in the second upper power chamber 211; the lower branch 52 occupies all the vertical space of the second wiring chamber 22 / the first wiring chamber 12.

[0060] When the number of the second power modules 4 in the second upper power chamber 211 is small and only occupies the bottom space, the second power module 4 is directly connected through the connection position of the main path 51 without an additional upper branch 53, reducing bends and contact points, reducing impedance. Since the lower branch 52 occupies the vertical space exclusively, the cross-sectional area can be maximized, which is suitable for large-current transmission.

[0061] When the number of the second power modules 4 in the second upper power chamber 211 is small, the conventional design may leave vacant vertical channels. In this embodiment, through the full-height filling of the connection bit + the lower branch 52, efficient and compact electrical connection and space utilization can be achieved, avoiding waste. The connection bit only protrudes locally and does not affect the overall penetration of the main path 51. In the vertical direction, the lower branch 52 occupies all the vertical space of the wiring chamber without redundant space.

[0062] In some embodiments, the above electrical cabinet may also adopt structures such as Figure 1 and Figure 2 as shown, see Figure 1 and Figure 2 The electrical cabinet further includes a switch module 6, which is located in the first upper power chamber 111 and is electrically connected to the first power module 3.

[0063] The switch module 6 is used to control the input / output on / off of the first power module 3 and the second power module 4, realizing the start / stop and mode switching of the system. Since the heat generation of the switch module 6 is small and it is placed in the first upper power chamber 111, away from the first power module 3 and the second power module 4, the influence of high temperature on its service life can be avoided.

[0064] As a vulnerable part, the switch module 6 is placed in the first upper power chamber 111 for easy maintenance or replacement. The switch module 6 is also close to the first wiring chamber 12, and the control cable can be horizontally routed to the first wiring chamber 12 and arranged in layers with the lower branch 52 to reduce interference.

[0065] Specifically, in this embodiment, two groups of switch modules 6 can be set, and at least two first power cabinets 1 are combined in parallel. The two groups of switch modules 6 are respectively located in two first upper power chambers 111. The two switch modules 6 are respectively electrically connected to the first power modules 3 of each first power cabinet 1 and the second power modules 4 of the second power cabinet 2. Through the parallel logic design, the two groups of switch modules 6 can be used as backups for each other. When any one of the switch modules 6 fails, the other group of switch modules 6 can immediately take over the load to ensure the continuous operation of the electrical cabinet.

[0066] In some embodiments, the above first power cabinet 1 may also adopt structures such as Figure 1 and Figure 2 as shown, see Figure 1 and Figure 2 The first power cabinet 1 further has a bottom power chamber 13, and a third power module 7 is provided in the bottom power chamber 13.

[0067] At the bottom of the first power cabinet 1, a bottom power chamber 13 is formed. The first upper power chamber 111, the first lower power chamber 112, and the bottom power chamber 13 form a three-layer vertical partition. Different chambers are used to place different modules, realizing a modular layout of functions and avoiding signal interference. In addition, the third power module 7 is placed at the bottom, reducing the center of gravity of the cabinet body and improving the seismic stability.

[0068] For the electrical connection method, the position of the main circuit 51 remains unchanged and still runs horizontally through the first wiring chamber 12. The lower branch 52 extends vertically downward from the main circuit 51 to the third power module 7, and the cross-sectional area is increased to carry high current.

[0069] It should be noted that the bottom of the second power cabinet 2 also has a bottom power chamber 13, which can be understood as the inner cavity structure of the second power chamber 21 being exactly the same as that of the first power chamber 11.

[0070] In some embodiments, the above electrical cabinet can also adopt the structure as Figure 1 shown, see Figure 1 , the electrical cabinet further includes an output cabinet 8, and the output cabinet 8 is arranged side by side with the first power cabinet 1 and the second power cabinet 2; the output cabinet 8 has a third wiring chamber 81, and the third wiring chamber 81 is communicated with the first wiring chamber 12 and the second wiring chamber 22 and is at the same horizontal height.

[0071] The output cabinet 8 serves as a terminal power distribution node, aggregates the electric energy processed by the first power cabinet 1 and the second power cabinet 2, and distributes it to the load through a unified interface. The output cabinet 8 is internally provided with output-side protection devices (such as fuses and surge suppressors) to isolate the impact of backend faults on the front-stage power modules. New branches can be added through the output cabinet 8 without changing the internal structure of the power cabinet; moreover, the output cabinet 8 provides a unified electrical / mechanical interface and is compatible with different load types.

[0072] The third wiring chamber 81 is communicated with the first wiring chamber 12 and the second wiring chamber 22. The main circuit 51 of the conductive module 5 horizontally penetrates through the first wiring chamber 12 → the second wiring chamber 22 → the third wiring chamber 81, forming a low-impedance path and reducing the bending loss of traditional diagonal wiring.

[0073] The third wiring chamber 81 is at the same height as the first wiring chamber 12 and the second wiring chamber 22. All cross-cabinet connection points are concentrated at the same horizontal height. During maintenance, only one horizontal panel needs to be opened without climbing up and down.

[0074] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrical cabinet, characterized in that, It includes a first power cabinet (1) and a second power cabinet (2) arranged in a juxtaposed cabinet configuration; The first power cabinet (1) has at least one first power chamber (11) and a first wiring chamber (12); the first power chamber (11) is used for placing a first power module (3); The second power cabinet (2) has at least one second power chamber (21) and a second wiring chamber (22); the second power chamber (21) is used for placing a second power module (4); the number of the second power modules (4) is different from that of the first power modules (3), and the second power modules (4) and the first power modules (3) are connected by a conductive module (5); Wherein, at least one of the first power chambers (11) is vertically offset from at least one of the second power chambers (21), the first wiring chamber (12) and the second wiring chamber (22) are in communication with each other and at the same horizontal height, and the conductive module (5) is located in the first wiring chamber (12) and the second wiring chamber (22).

2. The electrical cabinet according to claim 1, characterized in that, At least one of the first power chambers (11) is above the first wiring chamber (12), and at least one of the second power chambers (21) is below the second wiring chamber (22); and / or At least one of the first power chambers (11) is below the first wiring chamber (12), and at least one of the second power chambers (21) is above the second wiring chamber (22).

3. The electrical cabinet according to claim 2, characterized in that, There are two first power chambers (11), which are divided into a first upper power chamber (111) and a first lower power chamber (112); the first wiring chamber (12) is located between the first upper power chamber (111) and the first lower power chamber (112); There are two second power chambers (21), which are divided into a second upper power chamber (211) and a second lower power chamber (212); the second wiring chamber (22) is located between the second upper power chamber (211) and the second lower power chamber (212); Wherein, the first lower power chamber (112) and the second lower power chamber (212) have the same structure and are at the same horizontal height; the first upper power chamber (111) and the second upper power chamber (211) have the same structure and are at the same horizontal height.

4. The electric cabinet according to claim 3, characterized in that The first power module (3) fills the first lower power chamber (112); The second power module (4) fills the second lower power chamber (212) and the second upper power chamber (211); or, the second power module (4) fills the second lower power chamber (212) and occupies a part of the space of the second upper power chamber (211); the number of the second power modules (4) in the second lower power chamber (212) is greater than the number of the second power modules (4) in the second upper power chamber (211).

5. The electrical cabinet according to claim 4, characterized in that, The conductive module (5) includes a plurality of copper bar modules; a set of the copper bar modules is provided in each of the first power cabinet (1) and the second power cabinet (2); The copper bar module includes a main path (51) and a lower branch path (52). The main path (51) is horizontally arranged in the first wiring chamber (12) / the second wiring chamber (22); the lower branch path (52) is vertically arranged in the first wiring chamber (12) / the second wiring chamber (22), and the lower branch path (52) is connected to the second power module (4) of the first power module (3) / the second lower power chamber (212).

6. The electrical cabinet according to claim 5, characterized in that, The copper bar module in the second power cabinet (2) further includes an upper branch path (53). The upper branch path (53) is vertically arranged in the second wiring chamber (22) and is connected to the second power module (4) of the second upper power chamber (211). Wherein, the upper branch path (53) and the lower branch path (52) occupy all the vertical space of the second wiring chamber (22).

7. The electrical cabinet according to claim 5, characterized in that, The second power module (4) occupies the bottom space of the second upper power chamber (211); the main path (51) further has a connection position, and the connection position is connected to the second power module (4) in the second upper power chamber (211). The lower branch path (52) occupies all the vertical space of the second wiring chamber (22) / the first wiring chamber (12).

8. The electrical cabinet according to claim 4, characterized in that, The electrical cabinet further includes a switch module (6). The switch module (6) is located in the first upper power chamber (111) and is electrically connected to the first power module (3).

9. The electrical cabinet according to claim 1, characterized in that, The first power cabinet (1) further has a bottom power chamber (13), and a third power module (7) is arranged in the bottom power chamber (13).

10. The electrical cabinet according to claim 1, characterized in that, The electrical cabinet further includes an output cabinet (8). The output cabinet (8) is arranged in parallel with the first power cabinet (1) and the second power cabinet (2); the output cabinet (8) has a third wiring chamber (81). The third wiring chamber (81) is communicated with the first wiring chamber (12) and the second wiring chamber (22) and is at the same horizontal height.

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