A type of air-cooled multi-channel solid-state circuit breaker cabinet

Abstract

This invention discloses a wind-cooled multi-channel solid-state circuit breaker cabinet, comprising a cabinet body and a wind-cooling heat dissipation system. The cabinet interior is divided layer by layer from front to back by longitudinal beams into an isolation zone, a first component mounting zone, a heat dissipation zone, and a second component mounting zone. The wind-cooling heat dissipation system includes air inlets at the bottom of the front and rear doors and air outlets at the top, as well as a heat dissipation structure located within the heat dissipation zone. The heat dissipation structure includes a radiator duct and optional fan assemblies, which can be flexibly configured according to power switching components with different thermal powers to achieve precise and efficient heat dissipation. Each electrical channel has an independent control panel corresponding to the front door, integrating a display screen, indicator lights, and buttons, supporting independent on / off control of multiple circuits. This invention, through reasonable functional zoning and air duct design, solves the problems of low heat dissipation efficiency and poor multi-circuit adaptability in existing technologies, and has the advantages of high heat dissipation efficiency, reasonable layout, convenient operation and maintenance, and good protection.

Description

Technical Field

[0001] This invention relates to the field of solid-state circuit breaker cabinet technology, specifically to an air-cooled multi-channel solid-state circuit breaker cabinet. Background Technology

[0002] Solid-state circuit breakers (SSCBs), with their core technological advantages such as microsecond-level fault breaking, arc-free discharge, long electrical life, and high level of intelligence, are better suited to the development needs of modern power systems compared to traditional mechanical circuit breakers. They have become a core and critical piece of equipment for ensuring the safe operation of new power systems, and market demand is experiencing explosive growth. The cabinet, as the core load-bearing and protective component of the SSCB, not only needs to provide a stable and reliable installation environment for internal power semiconductor devices, control modules, and other core components, but its heat dissipation performance, circuit adaptability, and structural rationality directly determine the operational stability, efficiency, and service life of the SSCB. It is a crucial support for promoting the large-scale and engineering application of SSCBs.

[0003] However, current solid-state circuit breaker (SSCB) cabinets still have many shortcomings, making it difficult to fully match the performance advantages of SSCBs and the application needs of emerging power scenarios. First, there is insufficient heat dissipation; high-power SSCBs with IGBTs and SiC devices generate a lot of heat, and traditional heat dissipation methods are inefficient, easily leading to performance degradation or safety failures. Second, there is a lack of multi-circuit adaptability; single-channel designs cannot independently switch on and off, making it difficult to meet the needs of multi-circuit scenarios such as energy storage. Third, there are adaptability defects; traditional cabinets are not reusable, and new designs have poor compatibility and maintainability.

[0004] Therefore, developing a wind-cooled multi-channel solid-state circuit breaker cabinet that can simultaneously access multiple channels, supports independent switching of a single channel, has efficient heat dissipation, and a reasonable layout is the key to breaking through the bottleneck of large-scale application of solid-state circuit breakers, and has important practical significance and industrial value. Summary of the Invention

[0005] To address the aforementioned problems, this invention aims to provide an air-cooled multi-channel solid-state circuit breaker cabinet to solve the technical problems of low heat dissipation efficiency, poor multi-circuit adaptability, and unreasonable structural layout in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A wind-cooled multi-channel solid-state circuit breaker cabinet includes a cabinet body and a wind-cooling heat dissipation system. The cabinet body is divided into multiple functional areas by an isolation structure. The multiple functional areas include at least a component mounting area for mounting components and a heat dissipation area for heat dissipation. The wind-cooling heat dissipation system includes an air inlet at the bottom of the cabinet body, an air outlet at the top of the cabinet body, and a heat dissipation structure disposed in the heat dissipation area. The top of the cabinet body is provided with a mounting plate for mounting control components, and the side of the cabinet body is provided with a control switch electrically connected to lighting components.

[0007] Furthermore, the multiple functional areas inside the cabinet are divided layer by layer from front to back by the first longitudinal beam and the second longitudinal beam into an isolation area, a first component installation area, a heat dissipation area, and a second component installation area; the isolation area is used to isolate the high-voltage live area and guide airflow, the first component installation area is used to install the circuit breaker body, the heat dissipation area is used to install the heat dissipation structure, and the second component installation area is used to install the primary circuit components.

[0008] Furthermore, the cabinet includes an openable front door and a rear door, as well as a base fixed to the bottom; the front door and the rear door are movably connected to the cabinet via hinges, and door locks are installed at the edges; universal wheels are symmetrically installed at the four corners of the bottom of the base, and hanging rings are correspondingly installed at the four corners of the top of the cabinet.

[0009] Furthermore, the air inlet includes a first air inlet located near the bottom of the front door and a second air inlet located near the bottom of the rear door; the air outlet is located near the top of the rear door; and dust filters are installed inside the first air inlet, the second air inlet, and the air outlet.

[0010] Furthermore, the isolation structure includes: a first partition, a disconnect switch isolation plate, and a second partition disposed between the isolation area and the first component mounting area; a third partition and a primary circuit mounting plate disposed between the heat dissipation area and the second component mounting area; wherein, the first partition and the third partition are provided with heat dissipation holes, the second partition is a closed structure without heat dissipation holes and is installed near the top of the cabinet; the disconnect switch isolation plate is installed at the corresponding position of the disconnect switch, and its plate surface is provided with silkscreen markings for identifying the position of the electrical channel and the corresponding disconnect switch function; the disconnect switches are installed in an alternating arrangement of two columns.

[0011] Furthermore, the heat dissipation structure includes a radiator air duct, a first air duct, a second air duct, and a radiator disposed within the radiator air duct; a power switching element is attached to the surface of the radiator; the heat dissipation structure also includes a fan assembly, the fan assembly including a first fan mounting plate, at least one first fan and a second fan mounted on the first fan mounting plate, a second fan mounting plate mounted at the bottom of the radiator air duct, and at least one third fan selectively mounted on the second fan mounting plate.

[0012] Furthermore, when the thermal power of the power switching element is low, the heat sink adopts a structure with a large fin spacing and does not install a second fan mounting plate or a third fan; when the thermal power of the power switching element is high, the heat sink adopts a closely spaced tooth structure and is equipped with a second fan mounting plate and a third fan.

[0013] Furthermore, each electrical passage is equipped with an independent control panel corresponding to the front door position. The control panel integrates a display screen, indicator lights, buttons, and an emergency stop switch. The mounting plate for installing control components includes a secondary circuit mounting plate, which is fixedly assembled to the upper part of the cabinet. A wire tie is welded to the cabinet, and a waist-shaped hole is opened on the first longitudinal beam. A protective coil is embedded in the waist-shaped hole. After the connecting wires of each component of the control panel are bound and tidyed by the wire tie, they are stranded and threaded through the protective coil into the first component mounting area, and finally electrically connected to the main control board on the secondary circuit mounting plate.

[0014] Furthermore, the control switch is a limit switch, and the working logic of the limit switch is as follows: when the current door is closed, the button of the limit switch is touched, controlling the light to turn off; when the current door is opened, the button of the limit switch automatically pops out, controlling the light to turn on.

[0015] Furthermore, the bottom of the cabinet is provided with several tower-shaped sealing rings, and the energized copper core passes through the side of the base, and after being sealed and protected by the tower-shaped sealing rings, it is electrically connected to the internal wiring copper busbar.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) High efficiency in heat dissipation: By reasonably setting the air inlet, air outlet and heat dissipation structure, combined with the optional fan assembly, the directional heat dissipation of the power switching components is realized, which can adapt to the component requirements of different power specifications and ensure the stable operation of the equipment under high power conditions.

[0017] (2) Multi-channel independent control: Each electrical channel is equipped with an independent control panel at the front door, which integrates display screen, indicator light, button and emergency stop switch, supports simultaneous access and independent on / off operation of multiple circuits, and improves the expansion flexibility and circuit isolation of the cabinet.

[0018] (3) Reasonable structural layout: The cabinet interior is divided into multiple functional areas by the isolation structure, realizing the upper and lower partitioning of primary and secondary circuits to avoid mutual interference; at the same time, the wiring structure such as cable tie bridge and wire guard makes the wiring layout neat and convenient for later inspection and maintenance.

[0019] (4) Convenient operation and maintenance: The openable design of the front and rear doors, the dual movement method of casters and lifting rings, and the automatic lighting controlled by limit switches all improve the convenience of cabinet installation, movement and maintenance.

[0020] (5) Good protection performance: The tower-shaped sealing ring can effectively block external dust and moisture from entering the cabinet. The dustproof net can prevent dust from adhering to the surface of electrical components and heat dissipation structure, ensuring the long-term stability of the equipment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 This is a schematic diagram of the overall structure of the air-cooled multi-channel solid-state circuit breaker cabinet described in this invention.

[0023] Figure 2 This is a schematic diagram of the internal functional areas of the air-cooled multi-channel solid-state circuit breaker cabinet (after removing the side panels) described in this invention (the red arrow lines on the left and the green arrow lines on the right both indicate the direction of airflow).

[0024] Figure 3 This is a schematic diagram of the front door in the open state (internal schematic diagram of the isolation zone) according to the present invention.

[0025] Figure 4 This is a partially enlarged schematic diagram of the isolating switch partition described in this invention.

[0026] Figure 5 This is a schematic diagram of the internal structure of the first component mounting area of ​​the present invention.

[0027] Figure 6 This is a schematic diagram of the rear door opening state as described in the present invention (internal schematic diagram of the second component installation area).

[0028] Figure 7 This is a schematic diagram of the assembly of each air duct and fan in the heat dissipation structure described in the embodiment of the present invention.

[0029] Figure 8 This is an enlarged schematic diagram of the heat sink described in an embodiment of the present invention.

[0030] The diagram shows: 1-Cabinet; 2-Front door; 3-Rear door; 4-Base; 5-Isolation area; 6-First component mounting area; 7-Heat dissipation area; 8-Second component mounting area; 9-First longitudinal beam; 10-Second longitudinal beam; 11-First partition; 12-Isolating switch partition; 13-Second partition; 14-Third partition; 15-Primary circuit mounting plate; 16-Secondary circuit mounting plate; 17-Radiator air duct; 18-First air duct; 19-Second air duct; 20-Air duct mounting plate; 21-First fan mounting plate. 22-Second fan mounting plate; 23-First fan; 24-Second fan; 25-Third fan; 26-Radiator; 27-Power switch element; 28-Isolating switch; 29-Wire tie bridge; 30-Tower-shaped sealing ring; 31-Universal wheel; 32-Lifting ring; 33-Display screen; 34-Indicator light; 35-Button; 36-Emergency stop switch; 37-Door lock; 38-Coil guard; 39-First air inlet; 40-Second air inlet; 41-Air outlet; 42-Dustproof screen; 43-Limit switch. Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the conditions under which the invention can be implemented and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms used in this specification, such as "upper," "lower," "left," "right," and "middle," are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0033] In the description of this invention, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. It should be noted that the terms "comprising," "including," or any other variations are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Example 1:

[0034] like Figures 1 to 3 As shown in the figure, this embodiment provides an air-cooled multi-channel solid-state circuit breaker cabinet, including a cabinet body 1 and an air-cooling heat dissipation system. The interior of the cabinet body 1 is divided into multiple functional areas by an isolation structure. These functional areas include at least a component mounting area for mounting components and a heat dissipation area 7 for heat dissipation. The air-cooling heat dissipation system includes an air inlet located at the bottom of the cabinet body 1, an air outlet 41 located at the top of the cabinet body 1, and a heat dissipation structure located in the heat dissipation area 7. A mounting plate for mounting control components is provided on the top of the cabinet body 1, and a control switch electrically connected to lighting components is provided on the side of the cabinet body 1.

[0035] like Figure 2 As shown, in this embodiment, the multiple functional areas inside the cabinet 1 are divided layer by layer from front to back by (two pairs) of first longitudinal beams 9 and (one pair) of second longitudinal beams 10 into an isolation zone 5, a first component installation zone 6, a heat dissipation zone 7, and a second component installation zone 8. Each area has a clear division of labor and works together to ensure the stable operation of the cabinet. Among them, the area near the front door 2 is the isolation zone 5. Its core functions are, on the one hand, to isolate the high-voltage live area, forming a safety protection barrier to ensure the personal safety of operators during installation and maintenance; on the other hand, it can also act as an air duct to guide external cold air into the subsequent first component installation zone 6. The first component installation zone 6 is used to install the circuit breaker body. This area is the key part of the cabinet to realize the core electrical functions, undertaking the functions of current carrying and disconnection. The heat dissipation zone 7 is specially designed for the heat dissipation needs of high-heat power components such as power switching components. The area is mainly equipped with heat sinks 26. By reasonably planning the heat dissipation air duct, it is ensured that the heat generated by the high-heat power components can be dissipated in time to prevent the components from being damaged due to overheating. The second component mounting area 8 is mainly used to install components required for the primary circuit in the circuit. This area also serves as an airflow guide, optimizing airflow within the cabinet and improving overall heat dissipation efficiency. This four-zone structure clearly defines the functions within the cabinet and establishes a clear airflow path, laying the foundation for efficient heat dissipation and standardized wiring.

[0036] like Figure 1 and, Figure 3 as well as Figure 6 As shown, the cabinet 1 includes an openable front door 2 and a rear door 3, and a base 4 fixed to the bottom of the cabinet 1 by fastening bolts. The front door 2 and rear door 3 are movably connected to the cabinet 1 via hinges, and each of the front door 2 and rear door 3 has a corresponding door lock 37 installed at its edge. The opening and closing of the cabinet is controlled by rotating the door lock 37, allowing for quick installation, inspection, and maintenance of internal components, improving ease of operation and maintenance. Universal casters 31 are symmetrically installed at the four corners of the bottom of the base 4, and lifting rings 32 are correspondingly installed at the four corners of the top of the cabinet 1, enabling dual movement of the cabinet. The universal casters 31 are detachable; when the cabinet is moved to a designated position, the universal casters 31 can be removed, and fastening bolts can be installed through the mounting holes of the universal casters 31 to ensure that the cabinet will not shift due to environmental vibration, personnel collisions, or other factors during long-term operation, ensuring the stability of the internal electrical circuit connections. During the transfer of the cabinet, it can be hoisted and moved as a whole by using the top lifting ring 32 in conjunction with the lifting equipment, or it can be moved flexibly by pushing the cabinet manually and using the casters 31, thus realizing the dual movement of the cabinet 1.

[0037] like Figure 1 and Figure 6As shown, to meet the aforementioned heat dissipation requirements, the cabinet 1 has been specifically designed in terms of ventilation structure: the air inlets include a first air inlet 39 located near the bottom of the front door 2 and a second air inlet 40 located near the bottom of the rear door 3. The air outlet 41 is located near the top of the rear door 3.

[0038] like Figure 2 , Figure 3 , Figure 5 as well as Figure 6 As shown, the isolation structure includes: a first isolation structure disposed between the isolation area 5 and the first component mounting area 6; a second isolation structure disposed between the first component mounting area 6 and the heat dissipation area 7; and a third isolation structure disposed between the heat dissipation area 7 and the second component mounting area 8.

[0039] The first isolation structure includes a first partition 11, a disconnect switch isolation plate 12, and a second partition 13. The two sides of each component in the first isolation structure are respectively mounted on a pair of first longitudinal beams 9 between the isolation area 5 and the first component mounting area 6, separating the isolation area 5 from the first component mounting area 6. Several first partitions 11 are respectively installed at the bottom and upper middle part of the cabinet 1 (the first partitions 11 are divided into upper and lower groups, each group having at least one partition, and the two groups of first partitions 11 are located on the upper and lower sides of the disconnect switch 28, respectively). Each first partition 11 is provided with heat dissipation holes, which serve to divert the cold air entering the cabinet 1 through the first air inlet 39, guiding the cold air through the heat dissipation holes on the first partition 11 into the first component mounting area 6, thereby achieving heat dissipation for the components in that area. The isolating switch isolation plate 12 is installed at the corresponding position of the isolating switch 28 (the isolating switch isolation plate 12 is located between the upper and lower sets of first partition plates 11). In addition to having the basic function of isolating and partitioning, the isolating switch isolation plate 12 can also be screen-printed on its surface to mark the position of each electrical channel and the corresponding isolating switch 28, improving the recognizability of the internal structure of the cabinet and the convenience of operation and maintenance. The isolating switches 28 adopt an installation method of staggered arrangement in two columns. This layout structure effectively reduces the space occupied by components inside the cabinet, optimizes the wiring path of the copper core, and increases the distance between the isolating switches and surrounding components, which is conducive to heat dissipation and airflow. The second partition plate 13 is installed near the top of the cabinet 1 (located on the uppermost first partition plate 11). The structural design of the second partition plate 13 differs from that of the first partition plate 11. It does not have heat dissipation holes (it is a closed structure without heat dissipation holes) to restrict cold air from passing directly through the top of the cabinet 1, so as to avoid affecting the overall heat dissipation effect.

[0040] The second isolation structure includes a mounting base plate, which is a closed plate structure. The two sides of the second isolation structure are respectively mounted on another pair of first longitudinal beams 9 between the first component mounting area 6 and the heat dissipation area 7, separating the first component mounting area 6 and the heat dissipation area 7. The power switch element 27 and the disconnect switch 28 located in the first component mounting area 6 are both mounted on the mounting base plate (facing the first component mounting area 6). The mounting base plate has a heat dissipation airflow channel connecting the top space of the first component mounting area 6 and the heat dissipation area 7 at a position near the top of the inner side of the cabinet 1.

[0041] The third isolation structure includes a third partition plate 14 and a primary circuit mounting plate 15. The two sides of the third isolation structure are respectively mounted on the second longitudinal beam 10 between the heat dissipation area 7 and the second component mounting area 8, separating the heat dissipation area 7 from the second component mounting area 8. The third partition plate 14 is located near the bottom of the cabinet 1 and has heat dissipation holes. The function of the heat dissipation holes on the third partition plate 14 is to provide a flow channel for the cold air entering the cabinet 1 through the second air inlet 40, guiding the cold air precisely into the heat dissipation area 7, thereby achieving directional heat dissipation for the heat-generating components inside the heat dissipation area 7. The primary circuit mounting plate 15 consists of several closed plates located above the third partition plate 14, positioned in the middle of the cabinet 1, serving as a dedicated support base for the primary circuit components. Simultaneously, the primary circuit mounting plate 15 also functions as an air duct isolation device, separating and regulating the airflow path inside the cabinet 1 to prevent airflow interference between different areas and ensure the operating efficiency of the air-cooled heat dissipation system. A second heat dissipation airflow channel is located near the top of the cabinet 1 on the third isolation structure, directly opposite the air outlet 41. Example 2: Optimization of Heat Dissipation Structure

[0042] This embodiment further optimizes the heat dissipation structure based on Embodiment 1. For example... Figure 2 , Figure 5 , Figure 7 as well as Figure 8 As shown, the heat dissipation structure includes a radiator duct 17, a first duct 18, a second duct 19, and a radiator 26 disposed within the radiator duct 17. A power switching element 27 is fitted onto the surface of the radiator 26 to ensure rapid heat transfer to the radiator. The radiator duct 17, the first duct 18, and the second duct 19 are all hollow pipes.

[0043] The radiator air duct 17 is disposed within the heat dissipation area 7 and is mounted on the side of the mounting base facing the heat dissipation area 7 via air duct mounting plates 20 disposed on both sides of it. The first air duct 18 is also located within the heat dissipation area 7, with its lower end fixed to the top of the radiator air duct 17 and connected to the radiator air duct 17; one end of the second air duct 19 is fixedly connected to and connected to the first air duct 18, and the other end passes through the second heat dissipation airflow channel (passing through the lower side of the second heat dissipation airflow channel) and extends to the air outlet 41. The radiator 26 is installed within the radiator air duct 17 (made of materials such as aluminum profile, steel, aluminum alloy, copper-aluminum composite material, stainless steel, low-carbon steel, and cast iron), with a portion of the radiator 26 extending out of the radiator air duct 17 and penetrating the mounting base of the second isolation structure to be in contact with the power switching element 27.

[0044] To achieve adaptive heat dissipation for components with different power specifications, the heat dissipation structure also includes a fan assembly. The fan assembly includes a first fan mounting plate 21, a plurality of first fans 23 (preferably 6 in this embodiment) and second fans 24 (preferably 3 in this embodiment) mounted on the first fan mounting plate 21, a second fan mounting plate 22 mounted at the bottom of the radiator air duct 17, and a plurality of third fans 25 that can be selectively mounted on the second fan mounting plate 22.

[0045] The first fan mounting plate 21 is fixedly connected to the opening end (air outlet) of the second air duct 19 and located within the second component mounting area 8, with the first fan mounting plate 21 directly facing the air outlet 41. One side of each first fan 23 mounted on the first fan mounting plate 21 is positioned in the opening direction of the second air duct 19 (directly facing the opening end of the second air duct 19), while the other side faces the air outlet 41. Its function is to remove heat conducted from the power switching element 27 to the heat sink 26, achieving directional heat dissipation for the power switching element 27. One side of the second fan 24 faces the upper side of the second heat dissipation airflow channel, and the other side faces the air outlet 41. It is used to discharge the airflow from the second heat dissipation airflow channel and the airflow from the top of the second component mounting area 8, providing heat dissipation airflow for the entire internal space of the cabinet 1 and ensuring the overall heat dissipation effect of the cabinet. The second fan mounting plate 22 is located within the heat dissipation area 7, and air duct holes are opened on the side of the second fan mounting plate 22 to ensure airflow.

[0046] For power switching elements 27 with different thermal power specifications, this embodiment provides two specific heat dissipation configurations: Configuration A (Low Thermal Power Application): When the thermal power of the power switching element 27 is low, the heat sink 26 adopts a structure with a larger fin spacing. In this case, the airflow resistance within the heat sink airflow duct 17 is low, and the air pressure generated by the first fan 23 is sufficient to meet the cooling requirements. Therefore, there is no need to install the second fan mounting plate 22 and the third fan 25. This configuration reduces manufacturing costs and energy consumption while ensuring effective cooling.

[0047] Configuration B (High Thermal Power Application): When the thermal power of the power switching element 27 is high, the heat sink 26 adopts a closely spaced toothed structure to improve the heat transfer efficiency from the power switching element 27 to the fins of the heat sink 26. However, the closely spaced toothed heat sink will significantly increase the airflow resistance in the airflow channel, and the first fan 23 alone cannot provide sufficient airflow. In this case, a second fan mounting plate 22 and a third fan 25 need to be added to the bottom of the heat sink 26. The third fan 25 enhances the airflow in the airflow channel to ensure that the heat dissipation requirements are met.

[0048] The selective assembly design of the aforementioned fan can reasonably reduce the manufacturing and usage costs of the equipment while ensuring that the heat dissipation performance of the equipment meets the usage requirements. At the same time, it makes the cabinet structure more versatile for power switching elements 27 with different rated current specifications. Example 3: Control and Wiring Optimization

[0049] This embodiment further optimizes the control and wiring structure based on embodiment 1 or 2.

[0050] like Figure 1 , Figure 3 and Figure 4 As shown, each electrical passage is equipped with an independent control panel corresponding to the front door 2. This control panel integrates a display screen 33, indicator lights 34, buttons 35, and an emergency stop switch 36 to enable human-machine interaction. The display screen 33 displays electrical parameters and operating status, the indicator lights 34 indicate status, the buttons 35 are for manual operation, and the emergency stop switch 36 is for quick disconnection in emergencies.

[0051] The mounting plate for installing control components includes a secondary circuit mounting plate 16, which is a closed plate fixedly mounted on the upper part of the cabinet 1. Its two sides are respectively mounted on another pair of first longitudinal beams 9 between the first component mounting area 6 and the heat dissipation area 7. The secondary circuit mounting plate 16 is located on the upper side of the second isolation structure and below the heat dissipation airflow channel, and is used to install core secondary circuit components such as the main control board. This upper and lower partitioned arrangement design effectively isolates the secondary circuit from the primary circuit, avoiding mutual interference between different circuit components and lines.

[0052] To achieve neat wiring, a cable tie 29 is welded and fixed to the cabinet 1. A waist-shaped hole is provided on the first longitudinal beam 9, and a protective coil 38 is embedded within the waist-shaped hole. The connecting wires of the various components of the control panel (display screen 33, indicator lights 34, buttons 35, and emergency stop switch 36) are bound and tidied by the cable tie 29, then threaded through the protective coil 38 into the first component mounting area 6, and finally electrically connected to the main control board on the secondary circuit mounting plate 16. The binding and tidiing function of the cable tie 29 prevents the wires from becoming loose and messy, while the protective coil 38 protects the wires from wear at the edges of the waist-shaped hole. It also physically separates the primary and secondary circuit wiring, resulting in a neat and orderly internal wiring arrangement, facilitating later inspection, maintenance, and wiring troubleshooting. Example 4: Optimization of Cabinet Protection and Security

[0053] like Figure 3 As shown, in order to ensure the protective performance and safety of the cabinet 1, this embodiment adds the following settings based on any one of embodiments 1-3: the first air inlet 39, the second air inlet 40 and the air outlet 41 are all equipped with dustproof nets 42 to block external dust from entering the cabinet 1 and prevent dust from adhering to the electrical components and the surface of the heat dissipation structure, thus affecting the stability of equipment operation and heat dissipation efficiency. Example 5: Intelligentization and Protection Optimization

[0054] This embodiment further optimizes the intelligent control and protection structure based on any one of embodiments 1 to 4.

[0055] like Figure 3 and Figure 4 As shown, the control switch is a limit switch 43, which is electrically connected to the lighting inside the cabinet 1 to achieve automatic on / off control of the lighting. The working logic of the limit switch 43 is as follows: when the front door 2 is closed, the button of the limit switch 43 is triggered, controlling the lighting to turn off; when the front door 2 is open, the button of the limit switch 43 automatically pops out, controlling the lighting to turn on. This automatic control design provides sufficient lighting for maintenance and repair work inside the cabinet, avoiding the inconvenience of manually operating the lighting switch and improving the convenience of maintenance.

[0056] like Figure 3 , Figure 5 and Figure 6As shown, the bottom of the cabinet 1 is equipped with several tower-shaped sealing rings 30. The energized copper core passes through the side of the base 4 of the cabinet 1, and after being sealed and protected by the tower-shaped sealing rings 30, it is electrically connected to the wiring copper busbar inside the cabinet 1. The tower-shaped sealing rings 30 are made of elastic material, and their unique tower-shaped structure allows for a tight fit after the copper core is inserted, effectively preventing external dust and moisture from entering the cabinet and ensuring the operational stability of the internal electrical components. This is particularly important for solid-state circuit breaker cabinets installed in humid or dusty environments, significantly extending the equipment's service life. Example 6: Multi-channel independent control application

[0057] This embodiment demonstrates the specific implementation of the present invention in a typical application scenario.

[0058] Taking a data center power distribution system as an example, the air-cooled multi-channel solid-state circuit breaker cabinet of the present invention can be configured with 8 independent electrical channels, each channel corresponding to the power supply circuit of a server rack. Each channel is equipped with an independent control panel at the front door 2. Maintenance personnel can monitor parameters such as current, voltage, and power in real time through the display screen 33 of each channel, judge the circuit status through the indicator light 34, and perform remote or local on / off control through the button 35.

[0059] When a server rack requires maintenance, the circuit can be disconnected individually via button 35 on the corresponding channel without affecting the normal power supply to other racks, achieving refined power management. If an overload or short-circuit fault occurs in a circuit, the solid-state circuit breaker can disconnect the faulty circuit within microseconds, while other circuits continue to operate normally, maximizing the protection of the data center's core load.

[0060] The air-cooled heat dissipation system automatically adjusts according to the actual load: during low-load periods, the heat sink 26 uses a large-pitch fin structure, relying solely on the first fan 23 to reduce energy consumption; during high-load periods, the third fan 25 is automatically activated to ensure heat dissipation. The tower-shaped sealing ring 30 effectively prevents dust from entering the cabinet from the computer room, and the limit switch 43 controls the lighting to automatically turn on when the door is opened, facilitating maintenance personnel to inspect and repair the equipment. Work process description

[0061] In conjunction with the above embodiments, the working process of the air-cooled multi-channel solid-state circuit breaker cabinet of the present invention is as follows: Air cooling process: A cold front from outside ( Figure 2(As shown by the red arrow on the left) After entering the isolation zone 5 of the cabinet 1 through the first air inlet 39 of the front door 2, the air mainly flows through the current-carrying components such as the disconnect switch, copper busbar, and copper core. The heat generated by the above components during operation is dissipated through convection heat exchange. Then, it enters the first component mounting zone 6 through the heat dissipation holes of the two sets of first partitions 11. After passing through the power switch element 27, disconnect switch 28, heat sink 26, main control board and other secondary circuit core components on the secondary circuit mounting plate 16 in the first component mounting zone 6, it enters the upper space of the heat dissipation zone 7 through the first heat dissipation airflow channel above the second isolation structure. Then, it enters the upper space of the second component mounting zone 8 through the second heat dissipation airflow channel.

[0062] Another cold air mass from outside ( Figure 2 (As indicated by the green arrow on the right) After entering the cabinet through the second air inlet 40 of the rear door 3, most of the cold air enters the heat dissipation area 7 through the heat dissipation holes on the third partition 14. From the bottom of the heat dissipation area 7, it flows upward to the heat dissipation structure installed in the heat dissipation area 7. Driven by the fan assembly, it passes through the radiator air duct 17, the first air duct 18, the second air duct 19, and the first fan 23 in sequence. Then, it is discharged from the air outlet 41 under the suction of the first fan 23. During the flow through the radiator air duct 17, it undergoes forced convection heat exchange with the radiator 26 installed in close contact with the power switching element 27, achieving precise (directional) heat dissipation of the power switching element 27. At the same time, a small amount of cold air from the outside flows upward through the second element installation area 8, and finally enters the upper space of the second element installation area 8 under the suction of the second fan 24, playing an auxiliary role in heat dissipation and cooling of the primary circuit elements in this area.

[0063] Except for the hot air exhausted from the outlet 41 by the first fan 23, the other hot air that has undergone heat exchange and gathered in the upper space of the second component installation area 8 is finally exhausted from the cabinet 1 through the outlet 41 at the top of the rear door 3 by the second fan 24, forming an efficient and orderly air-cooling circulation system. In addition, different heat dissipation configurations can be selected according to the heat power of the power switching element 27 to achieve a balance between heat dissipation effect and energy consumption.

[0064] Electrical control process: Each electrical channel has an independent control panel for controlling the on / off state and monitoring the status of the corresponding circuit. Operators can manually operate the circuit via button 35, view the operating status on display screen 33, use indicator lights 34 for status indication, and use emergency stop switch 36 for rapid disconnection in emergencies. All control signals are transmitted via wiring harness to the main control board on the secondary circuit mounting plate 16, which then controls the power switching element 27.

[0065] Maintenance and repair process: Operators can open the front door 2 or the rear door 3 through door lock 37. At this time, the limit switch 43 automatically illuminates the internal lighting to facilitate maintenance work. The cabinet's internal functional areas are clearly defined, with primary and secondary circuits separated vertically, and the wiring is neatly arranged, facilitating fault diagnosis and component replacement. The tower-shaped sealing ring 30 effectively prevents external contaminants from entering the cabinet during maintenance.

[0066] Other aspects of this invention that are not detailed herein are all conventional techniques known to those skilled in the art.

[0067] It should be noted that the terms “comprising,” “including,” or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0068] The scope of protection of this invention is not limited to the technical solutions disclosed in the specific embodiments. Any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of this invention shall fall within the scope of protection of this invention.

Claims

1. A wind-cooled multi-channel solid-state circuit breaker cabinet, characterized in that... The system includes a cabinet (1) and a cooling system. The cabinet (1) is divided into multiple functional areas by an isolation structure. The multiple functional areas include at least a component mounting area for mounting components and a heat dissipation area (7) for heat dissipation. The cooling system includes an air inlet at the bottom of the cabinet (1), an air outlet (41) at the top of the cabinet (1), and a heat dissipation structure in the heat dissipation area (7). The top of the cabinet (1) is provided with a mounting plate for mounting control components, and the side of the cabinet (1) is provided with a control switch that is electrically connected to the lighting components.

2. The air-cooled multi-channel solid-state circuit breaker cabinet according to claim 1, characterized in that: The cabinet (1) contains multiple functional areas that are divided from front to back by the first longitudinal beam (9) and the second longitudinal beam (10): isolation area (5), first component installation area (6), heat dissipation area (7), and second component installation area (8).

3. The air-cooled multi-channel solid-state circuit breaker cabinet according to claim 2, characterized in that: The cabinet (1) includes an openable front door (2) and a rear door (3), as well as a base (4) fixed to the bottom; the base (4) has casters (31) symmetrically installed at the four corners of the bottom, and hanging rings (32) are installed at the four corners of the top of the cabinet (1).

4. The air-cooled multi-channel solid-state circuit breaker cabinet according to claim 3, characterized in that: The air inlet includes a first air inlet (39) located near the bottom of the front door (2) and a second air inlet (40) located near the bottom of the rear door (3); the air outlet (41) is located near the top of the rear door (3); the first air inlet (39), the second air inlet (40) and the air outlet (41) are all equipped with dustproof nets (42).

5. The air-cooled multi-channel solid-state circuit breaker cabinet according to claim 2, characterized in that, The isolation structure includes: The first partition (11), the disconnect switch partition (12), and the second partition (13) are disposed between the isolation area (5) and the first component mounting area (6); A third partition (14) and a primary circuit mounting plate (15) are disposed between the heat dissipation area (7) and the second component mounting area (8); Among them, the first partition (11) and the third partition (14) are provided with heat dissipation holes, the second partition (13) is a closed structure without heat dissipation holes and is installed near the top of the cabinet (1); the isolation switch isolation plate (12) is installed at the corresponding position of the isolation switch (28), and its plate surface is provided with silk screen markings for marking the position of the electrical channel and the corresponding isolation switch function; the isolation switch (28) adopts an installation method of staggered arrangement of two columns.

6. The air-cooled multi-channel solid-state circuit breaker cabinet according to claim 1, characterized in that: The heat dissipation structure includes a radiator air duct (17), a first air duct (18), a second air duct (19), and a radiator (26) disposed in the radiator air duct (17); the power switching element (27) is attached to the surface of the radiator (26); the heat dissipation structure also includes a fan assembly, the fan assembly including a first fan mounting plate (21), at least one first fan (23) and a second fan (24) mounted on the first fan mounting plate (21), a second fan mounting plate (22) mounted at the bottom of the radiator air duct (17), and at least one third fan (25) selectively mounted on the second fan mounting plate (22); air duct holes are provided on the side of the second fan mounting plate (22).

7. The air-cooled multi-channel solid-state circuit breaker cabinet according to claim 6, characterized in that, When the power switching element (27) has a low thermal power, the heat sink (26) adopts a structure with a large fin spacing and does not install the second fan mounting plate (22) and the third fan (25); when the power switching element (27) has a high thermal power, the heat sink (26) adopts a close-tooth structure and is equipped with the second fan mounting plate (22) and the third fan (25).

8. The air-cooled multi-channel solid-state circuit breaker cabinet according to claim 3, characterized in that: Each electrical passage is equipped with an independent control panel at the position of the front door (2). The control panel is equipped with a display screen (33), indicator lights (34), buttons (35) and an emergency stop switch (36). The mounting plate for installing control components includes a secondary circuit mounting plate (16), which is fixedly mounted on the upper part of the cabinet (1). A wire tie bridge (29) is welded and fixed on the cabinet (1), and a waist-shaped hole is opened on the first longitudinal beam (9), and a protective wire coil (38) is embedded in the waist-shaped hole; After the connecting wire harnesses of each component of the control panel are bound and tidy by the wire ties (29), they are threaded through the protective coils (38) and enter the first component mounting area (6), and finally electrically connected to the main control board on the secondary circuit mounting plate (16).

9. The air-cooled multi-channel solid-state circuit breaker cabinet according to claim 1, characterized in that: The control switch is a limit switch (43). The working logic of the limit switch (43) is as follows: when the current door (2) is closed, the button of the limit switch (43) is touched to control the lighting to turn off; when the current door (2) is opened, the button of the limit switch (43) automatically pops out to control the lighting to turn on.

10. The air-cooled multi-channel solid-state circuit breaker cabinet according to claim 1, characterized in that: The bottom of the cabinet (1) is provided with several tower-shaped sealing rings (30). The energized copper core is inserted from the side of the base (4) and is electrically connected to the internal wiring copper busbar after being sealed and protected by the tower-shaped sealing rings (30).

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