Power supply cabinet device and communication bureau station power supply system

Abstract

The utility model discloses a power supply cabinet device and a communication bureau station power supply system, the power supply cabinet device comprises a cabinet, an inner cavity is used for installing power supply equipment, and the top of the cabinet is provided with an opening. The shielding plate and the object receiving plate are connected with the inner side wall of the cabinet, and the shielding plate and the object receiving plate are located above the power supply equipment. The shielding plate and the object receiving plate are arranged at intervals in the vertical direction, the shielding plate is partially located above the object receiving plate, the width of the vertical projection of the shielding plate is smaller than the width of the opening, and a first channel is formed between the inner side wall of the cabinet and the end of the shielding plate. The object receiving plate directly faces the first channel, the width of the vertical projection of the object receiving plate is larger than that of the first channel, the object receiving plate is used for receiving sundries falling through the first channel, a second channel is formed between the shielding plate and the object receiving plate, the second channel is arranged in a folded-back mode, and the opening, the first channel, the second channel and the inner cavity of the cabinet are sequentially communicated. According to the device, sundries falling from the upper part can be prevented from falling into the cabinet, and meanwhile, wiring of a power supply system is not influenced.

Description

Technical Field

[0001] The utility model specifically relates to a power cabinet device and a communication station power supply system including the device. Background Art

[0002] With the development of communication technologies, especially mobile communication technologies, a large number of mobile communication stations need to be built. Mobile communication devices, supporting transmission devices, and various other devices are installed inside the stations. To ensure that communication devices are not powered off, a reliable power supply system (power supply equipment) composed of -48V high-frequency switching power supply equipment and battery packs is generally configured.

[0003] The power supply system of a communication station is installed in a power cabinet. Usually, to facilitate wiring of the power supply system, the upper end of the power cabinet is set to be open. However, when staff members perform wiring or maintenance operations, it is inevitable that parts or other sundries will fall, especially metal objects. Once these fallen sundries fall into the power cabinet through the open mouth, it is easy to cause an electrical short circuit in the entire power supply system, resulting in the damage and failure of the power supply system. And if a top plate is directly set on the top of the power cabinet to close the open mouth, it will cause inconvenience in wiring the power supply system.

[0004] Therefore, how to prevent sundries falling from above from falling into the cabinet while not affecting the wiring of the power supply system has become a technical problem to be solved urgently. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a power cabinet device and a communication station power supply system aiming at the above deficiencies in the prior art. The power cabinet device can prevent sundries falling from above from falling into the cabinet while not affecting the wiring of the power supply system.

[0006] According to an embodiment of the first aspect of the utility model, a power cabinet device is provided, including: a cabinet, a shielding plate, and a catch plate. The inner cavity of the cabinet is used to install power equipment. An open mouth is provided at the top of the cabinet. The shielding plate and the catch plate are accommodated in the inner cavity of the cabinet and are connected to the inner side wall of the cabinet. Both the shielding plate and the catch plate are located above the power equipment to shield sundries falling into the open mouth. The shielding plate and the catch plate are arranged at intervals in the vertical direction. Part of the shielding plate is located above the catch plate. The width of the vertical projection of the shielding plate is smaller than the width of the open mouth. A first channel is provided between the inner side wall of the cabinet and the end of the shielding plate. The catch plate faces the first channel. The width of the vertical projection of the catch plate is larger than the width of the first channel and is used to catch sundries falling through the first channel. A second channel is formed between the shielding plate and the catch plate. The second channel is arranged in a folded-back manner. The open mouth, the first channel, the second channel, and the inner cavity of the cabinet are connected in sequence.

[0007] Preferably, the baffle is provided with a first wiring end portion, the inner side wall of the cabinet is provided with a first inner side surface, the plane where the first inner side surface is located is perpendicular to the first horizontal direction, and the first wiring end portion and the first inner side surface are arranged at intervals along the first horizontal direction, so that a first channel is formed between the first wiring end portion and the opposite first inner side surface.

[0008] Preferably, the baffle is further provided with a second wiring end portion, the second wiring end portion and the first wiring end portion are respectively located at both ends of the baffle and are arranged opposite to each other along the first horizontal direction, the inner side wall of the cabinet is further provided with a second inner side surface, the second inner side surface is arranged opposite to the first inner side surface, the baffle is located between the first inner side surface and the second inner side surface, and the second wiring end portion of the baffle and the second inner side surface are arranged at intervals along the first horizontal direction, so that a first channel is also formed between the second wiring end portion and the opposite second inner side surface.

[0009] Preferably, both the first wiring end portion and the second wiring end portion extend along the second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, and the cross sections of the first wiring end portion and the second wiring end portion are both circular arcs bent downward.

[0010] Preferably, the baffle includes a bent section and two guiding sections, the bent section is located between the two guiding sections, the two guiding sections are connected by the bent section, the guiding sections are inclined downward, so that the height of the baffle gradually decreases from the middle to both ends, and the outer ends of the two guiding sections are respectively connected to the first wiring end portion and the second wiring end portion.

[0011] Preferably, the number of the object receiving plates is the same as the number of the first channels, each object receiving plate corresponds to one first channel, the number of the first channels is two, the number of the object receiving plates is two, the two object receiving plates are respectively opposite to the two first channels, the two object receiving plates are arranged opposite to each other along the first horizontal direction, the object receiving plate includes a third wiring end portion and a connecting end, the connecting ends of the two object receiving plates are respectively connected to the first inner side surface and the second inner side surface, the third wiring end portions of the two object receiving plates are arranged at intervals along the first horizontal direction and are both located directly below the baffle.

[0012] Preferably, the third wiring end portion of the object receiving plate extends along the second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, and the cross section of the third wiring end portion is a circular arc bent downward.

[0013] According to an embodiment of the second aspect of the present utility model, a power supply system for a communication station is provided, including: a power supply device and the above-mentioned power cabinet device. The power supply device is installed in the inner cavity of the cabinet of the power cabinet device. The baffle plate and the object receiving plate of the power cabinet device are used to prevent sundries from falling into the inner cavity of the cabinet through the open mouth of the cabinet. The power supply device includes a mains unit, a busbar unit, a battery pack, a primary power cut-off unit, and a secondary power cut-off unit. The mains unit is electrically connected to the busbar unit and is used to convert the alternating current of the mains into direct current and supply power to the busbar unit. The battery pack, the primary power cut-off unit, and the secondary power cut-off unit are all electrically connected to the busbar unit, and the battery pack, the primary power cut-off unit, and the secondary power cut-off unit are connected in parallel. The battery pack is used to supply direct current to the busbar unit when the mains power is cut off. The primary power cut-off unit is electrically connected to a first load circuit and is used to control the on / off of the first load circuit. A first threshold is preset in the primary power cut-off unit. The primary power cut-off unit is used to control the first load circuit to disconnect when the voltage value of the busbar unit is less than the first threshold. The secondary power cut-off unit is electrically connected to a second load circuit and is used to control the on / off of the second load circuit. A second threshold is preset in the secondary power cut-off unit. The second threshold is less than the first threshold. The secondary power cut-off unit is used to control the second load circuit to disconnect when the voltage value of the busbar unit is less than the second threshold.

[0014] Preferably, the secondary power cut-off unit includes a plurality of secondary power cut-off contactors, and the plurality of secondary power cut-off contactors are arranged in parallel. One end of the plurality of secondary power cut-off contactors is electrically connected to the busbar unit, and the other end is connected to the second load circuit.

[0015] Preferably, the power supply device further includes an inverter. One end of the inverter is electrically connected to the busbar unit, and the other end is connected to a third load circuit. The inverter is used to convert direct current into alternating current and supply alternating current to the third load circuit.

[0016] The power cabinet device of the present utility model is provided with an opening at the top of the cabinet to facilitate the threading of cables. At the same time, by arranging a baffle plate and an object receiving plate at the upper end of the inner cavity of the cabinet, it is possible to prevent sundries above the entire cabinet device from falling into the inner cavity of the cabinet, resulting in damage and power failure of the power equipment in the inner cavity of the cabinet. Specifically, the baffle plate is located above the object receiving plate, and the width of the vertical projection of the baffle plate is smaller than the width of the opening, so that a first channel is formed between the end of the baffle plate and the side wall of the opening. In addition, the object receiving plate faces the first channel, and the width of the vertical projection of the object receiving plate is greater than the width of the first channel, which is used to receive the sundries falling through the first channel. A second channel is formed in a folded-back manner between the baffle plate and the object receiving plate. Through the vertically stacked baffle plate and object receiving plate, the sundries falling into the opening can be blocked and received. Moreover, the opening, the first channel, the second channel and the inner cavity of the cabinet are sequentially connected, so that the cables can be conveniently inserted into the inner cavity of the cabinet through the first channel and the second channel, that is, the baffle plate and the object receiving plate are used to block the sundries, and it will not cause inconvenience in wiring the power supply system in the cabinet.

[0017] In summary, the power cabinet device of the present utility model can prevent sundries falling from above from entering the cabinet, and at the same time does not affect the wiring of the power supply system. Brief Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of an existing power supply system of a communication station;

[0019] Figure 2a is a front structural schematic diagram of the power cabinet device in Embodiment 1 of the present utility model;

[0020] Figure 2b is a side structural schematic diagram of the power cabinet device in Embodiment 1 of the present utility model;

[0021] Figure 3a is a first structural schematic diagram of the baffle plate and the object receiving plate in Embodiment 1 of the present utility model;

[0022] Figure 3b is a second structural schematic diagram of the baffle plate and the object receiving plate in Embodiment 1 of the present utility model;

[0023] Figure 4a is a third structural schematic diagram of the baffle plate and the object receiving plate in Embodiment 1 of the present utility model;

[0024] Figure 4b is a fourth structural schematic diagram of the baffle plate and the object receiving plate in Embodiment 1 of the present utility model;

[0025] Figure 5 is a schematic structural diagram of the power supply equipment in Embodiment 2 of the present utility model.

[0026] In the figure: 1 - cabinet, 2 - baffle, 21 - first wiring end, 22 - second wiring end, 3 - object receiving plate, 31 - third wiring end, 4 - sundries, 5 - cable, 6 - upper layer of the cabinet, 7 - middle layer of the cabinet, 8 - cable channel, 9 - lower layer of the cabinet, 91 - first unit space, 92 - second unit space. Detailed implementation mode

[0027] The following will clearly and completely describe the technical solutions in the present utility model in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the scope of the present utility model.

[0028] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0029] In the description of the present utility model, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connection", "setting", "installation", "fixing", etc. should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] Embodiment 1

[0032] Please refer to Figure 2a and Figure 2b The present utility model discloses a power cabinet device, including a cabinet 1, a baffle 2 and an object receiving plate 3.

[0033] Among them, the inner cavity of the cabinet 1 is used to install the power supply equipment, and the top of the cabinet 1 is provided with an opening. The baffle plate 2 and the receiving plate 3 are accommodated in the inner cavity of the cabinet 1 and are connected to the inner side wall of the cabinet 1. The baffle plate 2 and the receiving plate 3 are both located above the power supply equipment to block the debris 4 falling into the opening. The baffle plate 2 and the receiving plate 3 are arranged along the vertical interval, and the baffle plate 2 is partially located above the receiving plate 3. The width of the vertical projection of the baffle plate 2 is smaller than the width of the opening to leave a first channel. The receiving plate 3 is opposite to the first channel, and the width of the vertical projection of the receiving plate 3 is greater than the width of the first channel, which is used to receive the debris 4 falling through the first channel. A second channel is formed between the baffle plate 2 and the receiving plate 3, and the second channel is folded back. The opening, the first channel, the second channel and the inner cavity of the cabinet 1 are connected in sequence.

[0034] It should be noted that the opening refers to an opening formed by the upper edge of the inner wall of the cabinet 1 .

[0035] This power cabinet device is suitable for any installation scenario of power supply equipment (i.e. power supply equipment) that requires a large number of wiring, especially for the installation scenario of power supply equipment in mobile communication stations. The following will explain the scenario of mobile communication stations:

[0036] like Figure 1 As shown, Figure 1 The circuit structure of the power supply system of the existing communication station is shown in the figure. Mobile communication equipment, supporting transmission equipment, and other equipment are installed inside the station. Generally, various equipment in the station is powered by the mains electricity. When the ordinary mains electricity connected to the base station fails, the system can continue to supply power to the communication station for a period of time (the duration H is determined by the configured battery capacity) because of the power stored in the battery. The monitoring system of the station can simultaneously alarm and notify the maintenance personnel to arrive at the site for timely processing: if the mains electricity can be restored in time or the maintenance personnel arrive in time and use the generator to temporarily generate electricity for the station (power outage duration <H), the system can automatically recover and the system will charge the battery pack in time to prepare for the next power outage. If the power supply of the station cannot be restored in time (power outage duration >H), the communication equipment will not be able to use electricity and the communication network will not be able to serve users normally. The current common switching power supply system is the DC-48V system, which has been used in the mobile communication industry for more than 30 years since the 1990s and is a relatively mature system.

[0037] The power supply equipment in the existing communication station needs to be connected to many cables 5. In order to facilitate wiring, the top of the cabinet 1 is usually set to be open. With such a design, in the communication station where construction is frequent, it is very easy for metal objects to fall into the upper part during construction, causing electrical short circuit faults. In particular, the existing switching power supply system, the DC busbar inside is exposed, which is very easy to cause serious faults such as electric shock casualties caused by contact during construction, and debris 4 falling from the top, causing short circuits.

[0038] Based on the above problems, in this embodiment, a power cabinet device is proposed to accommodate and install the power supply equipment inside a communication station.

[0039] Specifically, the power cabinet device is provided with an open mouth at the top of the cabinet 1 to facilitate the threading of the cable 5. At the same time, by arranging a baffle plate 2 and an object receiving plate 3 at the upper end of the inner cavity of the cabinet 1, it is possible to prevent sundries 4 above the entire cabinet 1 device from falling into the inner cavity of the cabinet 1, resulting in damage and power failure of the power supply equipment in the inner cavity of the cabinet 1.

[0040] Furthermore, as Figure 2b shown, the baffle plate 2 is installed at the upper end of the inner cavity of the cabinet 1 and is located above the object receiving plate 3, and the width of the vertical projection of the baffle plate 2 is smaller than the width of the open mouth, so that a first channel is formed between the end of the baffle plate 2 and the inner side wall of the cabinet 1. This structure can block the sundries 4 falling into the open mouth without affecting the wiring.

[0041] In addition, since there is a first channel between the baffle plate 2 and the side wall of the open mouth, the sundries 4 may still fall into the inner cavity of the cabinet 1 from the first channel. In this power cabinet device, an object receiving plate 3 is also provided. The object receiving plate 3 faces the first channel, and the width of the vertical projection of the object receiving plate 3 is greater than the width of the first channel, which is used to receive the sundries 4 falling through the first channel. A second channel is formed in a folded-back manner between the baffle plate 2 and the object receiving plate 3. Through the stacked layout of the baffle plate 2 and the object receiving plate 3 in the upper and lower layers, the sundries 4 falling into the open mouth can be blocked and received. Moreover, the open mouth, the first channel, the second channel and the inner cavity of the cabinet 1 are sequentially connected, so that the cable 5 can be conveniently passed through the first channel and the second channel into the inner cavity of the cabinet 1, that is, the baffle plate 2 and the object receiving plate 3 are used to block the sundries 4, and it will not cause inconvenience in wiring the power supply system inside the cabinet 1.

[0042] In summary, this power cabinet device can prevent the sundries 4 falling from above from falling into the cabinet 1, and at the same time does not affect the wiring of the power supply system.

[0043] It should be noted that the number of the baffle plates 2 can be one or more. In some embodiments, the number of the baffle plates 2 is multiple. As Figure 3a and Figure 3bAs shown, by way of example, the number of baffle plates 2 is two. The two baffle plates 2 are arranged oppositely. One end of the baffle plate 2 is a wiring end portion with a circular arc-shaped cross section, and the other end is connected to the inner side wall of the cabinet 1. The first wiring end portions 21 of the two baffle plates 2 are arranged at intervals, so that a first channel is formed by enclosing between the two first wiring end portions 21 and the inner side wall of the cabinet 1. In this example, the number of the first channels is one. The central axis of the first channel is on the extension line of the vertical central axis of the cabinet 1. The number of the object receiving plate 3 is also one, and the object receiving plate 3 is located directly below the first channel for blocking sundries 4 falling in the first channel.

[0044] Please refer to Figure 2b , in this embodiment, the number of baffle plates 2 is one. The baffle plate 2 is provided with a first wiring end portion 21. The inner side wall of the cabinet 1 is provided with a first inner side surface. The plane where the first inner side surface is located is perpendicular to the first horizontal direction. The first wiring end portion 21 and the first inner side surface are arranged at intervals along the first horizontal direction, so that a first channel is formed between the first wiring end portion 21 and the opposite first inner side surface.

[0045] Specifically, when observing from top to bottom, the shape of the horizontal projection of the first channel is rectangular. Taking a cabinet with length, width and height of 600*600*1800 mm as an example, the length and width dimensions of the first channel can reach 600*50 mm. Compared with some existing cabinets 1, by setting a reserved hole on the top plate for the cable 5 to pass through, if the size of the reserved hole is too large, sundries 4 still cannot be blocked from falling into the inner cavity of the cabinet 1, and the effect of blocking sundries 4 cannot be achieved. If the size of the reserved hole is too small, cables 5 with a larger diameter (or cables 5 with a larger connector diameter) cannot pass through, resulting in an unsmooth wiring process. In this embodiment, by reserving a first channel with relatively large length and width dimensions, cables 5 with different diameters can be adapted to pass through. And by arranging the object receiving plate 3 directly below the first channel, sundries 4 can be prevented from falling into the inner cavity of the cabinet 1 through the first channel without affecting the wiring.

[0046] It should be noted that the number of wiring end portions of the baffle plate 2 can be one or two. As Figure 4a and Figure 4b , in some embodiments, the number of wiring end portions of the baffle plate 2 is one. By way of example, one end of the baffle plate 2 is set as a wiring end portion, and the end opposite to the wiring end portion is set as a connection end, and the connection end is connected to the second inner side surface of the cabinet 1. The wiring end portion of the baffle plate 2 and the first inner side surface of the cabinet 1 are arranged at intervals along the first horizontal direction, so that a first channel is formed between the first wiring end portion 21 and the opposite first inner side surface. In this example, the number of the first channels is one, and the first channel is located on the side close to the first inner side surface. The number of the object receiving plate 3 is also one, and the object receiving plate 3 is located directly below the first channel for blocking sundries 4 falling in the first channel.

[0047] As Figure 2b shown, preferably, in this embodiment, the number of wiring ends of the baffle 2 is two. Specifically, the baffle 2 is further provided with a second wiring end 22. The second wiring end 22 and the first wiring end 21 are respectively located at both ends of the baffle 2 and are oppositely arranged along the first horizontal direction. The inner side wall of the cabinet 1 is further provided with a second inner side surface, and the second inner side surface is oppositely arranged with the first inner side surface. The baffle 2 is located between the first inner side surface and the second inner side surface. The second wiring end 22 of the baffle 2 is spaced from the second inner side surface along the first horizontal direction, so that a first channel is also formed between the second wiring end 22 and the opposite second inner side surface.

[0048] It should also be noted that, as Figure 2b shown, the first inner side surface may refer to one of the front and rear sides of the cabinet 1, and the second inner side surface is the side opposite to the first inner side surface. For example: the first inner side surface may refer to the front side, and the second inner side surface is the rear side. Of course, in some other embodiments, the first inner side surface and the second inner side surface may also refer to the left and right sides of the cabinet 1. The first inner side surface and the second inner side surface only need to be oppositely arranged.

[0049] In this embodiment, by arranging the baffle 2 at the middle position of the opening, first channels are respectively formed between the first wiring end 21 and the second wiring end 22 of the baffle 2 and the inner side wall of the cabinet 1. The advantage of such an arrangement is that the two first channels can facilitate the wiring of the cable 5 by the staff more conveniently.

[0050] It should be noted that the inner side wall of the cabinet 1 further includes a third inner side surface and a fourth inner side surface, and the third inner side surface and the fourth inner side surface are oppositely arranged along the second horizontal direction. In other words, the third inner side surface and the fourth inner side surface are respectively the left and right sides of the cabinet 1. The two opposite ends of the baffle 2 along the second horizontal direction are respectively connected to the third side surface and the fourth side surface.

[0051] The number of the first channels is two, and the two first channels are respectively located at the front and rear sides of the cabinet 1. The number of the receiving plates 3 is also two, and the two receiving plates 3 are respectively located directly below the two first channels and are used to block the sundries 4 falling in the first channels. It should also be noted that the two receiving plates 3 are spaced from each other along the first horizontal direction to leave a second channel for the cable 5 to pass through. It can be seen that the number of the receiving plates 3 is the same as the number of the first channels, and each receiving plate 3 corresponds to a first channel.

[0052] In other words, the number of the receiving plates 3 is the same as the number of the first channels. Each receiving plate 3 corresponds to one first channel. The number of the first channels is two, and the number of the receiving plates 3 is two. The two receiving plates 3 respectively face the two first channels, and the two receiving plates 3 are arranged opposite to each other along the first horizontal direction. The receiving plate 3 includes a third wiring end 31 and a connection end. The connection ends of the two receiving plates 3 are respectively connected to the first inner side and the second inner side. The receiving plate 3 extends inwards, and the third wiring ends 31 of the two receiving plates 3 are both directly below the shielding plate 2. Moreover, the two third wiring ends 31 are arranged at intervals along the first horizontal direction. As shown in Figure 2, the width of the vertical projection of the receiving plate 3 is greater than the width of the first channel, so that the second channel is set to be folded back. At this time, even if the sundries 4 fall from the first channel, they will be caught by the receiving plate 3 and will not fall into the cabinet 1.

[0053] Furthermore, as Figure 2b shown, both the first wiring end 21 and the second wiring end 22 extend along the second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, and the cross-sections of the first wiring end 21 and the second wiring end 22 are both circular arcs bent downwards. By setting the wiring ends as circular arcs, it is more convenient to facilitate the cable laying construction to avoid scratching the cable at a right angle.

[0054] Similar to the wiring ends of the shielding plate 2, the third wiring end 31 of the receiving plate 3 extends along the second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, and the cross-section of the third wiring end 31 is a circular arc bent downwards. In other words, wiring arcs (i.e., wiring ends) are arranged on the outer sides of the upper shielding plate 2 and the lower receiving plate 3. By setting the wiring arcs, it is more convenient to facilitate the cable laying construction to avoid scratching the cable at a right angle.

[0055] Furthermore, the shielding plate 2 includes a bent section and two guiding sections. The bent section is located between the two guiding sections, and the two guiding sections are connected by the bent section. The guiding sections are inclined downwards, so that the height of the shielding plate 2 gradually decreases from the middle to both ends. The outer ends of the two guiding sections are respectively connected to the first wiring end 21 and the second wiring end 22.

[0056] In this embodiment, the cross-section of the shielding plate 2 is in an inverted "V" shape. The advantage of such a setting is that the guiding sections can guide the sundries 4 falling on the shielding plate 2 to the first channel, and then the sundries 4 fall onto the receiving plate 3.

[0057] At the same time, the receiving plate 3 is also inclined downwards. Specifically, the height of the receiving plate 3 gradually decreases from the third wiring end 31 to the connection end, so that a stop groove is formed between the receiving plate 3 and the inner side wall of the cabinet 1. As Figure 2b shown, when the sundries 4 fall onto the receiving plate 3, the sundries 4 will roll into the stop groove along the inclined direction of the receiving plate 3 under the action of gravity.

[0058] Obviously, in this embodiment, the guide section of the baffle plate 2 cooperates with the inclined receiving plate 3, which can effectively achieve the effect of receiving the debris 4, avoid the debris 4 from splashing and injuring people or damaging other equipment, and can also avoid the debris 4 from bouncing and splashing, so as to reduce the possibility of the debris 4 accidentally falling into the cabinet 1 during the bouncing process.

[0059] Furthermore, the inclination angle of the upper baffle plate 2 (guide section) and the lower connecting plate 3 is 10-25 degrees. If the inclination angle of the guide section and the connecting plate 3 is too large, the cable 5 will bend and deform too much when passing through the first channel and the second channel, which may easily cause damage and cracking of the cable 5. Preferably, the inclination angle of the upper baffle plate 2 (guide section) and the lower connecting plate 3 are both arranged at an inclination of 15 degrees, and the outer edge of the lower connecting plate 3 (the end close to the third wiring end 31) exceeds the outer edge of the upper baffle plate 2 to achieve the shielding function, which is conducive to the rolling down of debris 4 and the collection of debris 4 in the groove between the lower connecting plate 3 and the side panel of the cabinet 1, which can be convenient for cleaning during later maintenance.

[0060] like Figure 2b The specifications and structure of the cabinet 1 are further described as follows:

[0061] Cabinet 1 uses a universal 600*600mm cabinet, which is convenient for arranging components and cables. The height of cabinet 1 is 1800mm, which fully utilizes the height space of the station to avoid waste.

[0062] Cabinet 1 Figure 2b As shown, the cabinet 1 is divided into a three-stage modular structure, including: an upper cabinet layer 6, a middle cabinet layer 7 and a lower cabinet layer 9. The upper, middle and lower layers of the cabinet 1 can be separated by partitions. By dividing the cabinet 1 into the upper, middle and lower layers, the cabinet space can be fully and reasonably utilized, which is convenient for installing small equipment commonly found in the station.

[0063] Specifically, the upper layer 6 of the cabinet is used to place the integrated power distribution unit, and the shielding plate 2 and the receiving plate 3 at the open opening can prevent falling objects.

[0064] The middle layer 7 of the cabinet is used to place rectification, inversion, and monitoring modules. The devices on the middle layer 7 of the cabinet can output alternating current or direct current. Specifically, the rectification unit is configured with slots for N rectification modules, and the required modules are configured on-site according to the required capacity. The inversion unit is configured with a 1KVA inverter (-48V / 220V) and shares the battery pack with the switching power supply. When the mains power is normal, the rectification module is responsible for charging the battery; after the mains power outage, the inverter is responsible for supplying power to important AC devices to ensure the safety of the service. A cable channel 8 (i.e., a wiring duct) is also provided on the middle layer 7 of the cabinet. It should be noted that the wiring duct runs through the upper, middle, and lower layers of the cabinet from top to bottom. The wiring duct is used to leave enough channels for laying cables.

[0065] The monitoring module can simultaneously monitor the working states of the rectifier, inverter, and battery pack. The monitoring module can monitor the current, power, cumulative power consumption, power consumption during a certain period, etc. of each output loop. The monitoring module can also collect and measure devices, and the monitoring module has the necessary accuracy, specifically not less than 0.5 level. The signal output of the monitoring module: can output simultaneously through the wired RS232 / 485 interface protocol format and the wireless method of 4G / 5G Internet of Things SIM cards. The monitoring module can facilitate the realization of the monitoring function in different on-site conditions. It should be noted that the monitoring module can use commercially available devices as long as the above functions can be achieved.

[0066] The lower layer 9 of the cabinet is a general-purpose small 19” (i.e., 19 inches) standard cabinet 1, which can make full use of space. The front and back of the lower layer 9 of the cabinet are divided into two unit spaces. The first unit space 91 located in the front is a general-purpose small 19” cabinet 1, which can install small communication devices that do not require a dedicated rack. The second unit space 92 located in the back is divided into left and right parts, which are respectively used to install the AC mains connection unit and the wiring duct (i.e., the cable channel 8). The AC mains connection unit includes a molded case circuit breaker for AC input, lightning protection devices, and connected power cables, etc. The wiring duct is mainly used for laying cables 5, etc. for the small communication devices installed in the general-purpose cabinet 1 on the lower layer, including the device cables, optical fiber tails for communication, etc.

[0067] In summary, it can be seen that by reasonably partitioning and arranging the inner cavity of the cabinet 1 body, the utilization rate of the inner cavity space can be improved, and common small devices in the station can be accommodated.

[0068] As Figure 2b shown, the working principle of the power cabinet device in this embodiment will be specifically described below:

[0069] The power cabinet device includes a cabinet body, a baffle plate 2 and a receiving plate 3. The upper end of the cabinet body is provided with an opening. The baffle plate 2 and the receiving plate 3 are accommodated in the inner cavity of the cabinet body and are located above the power equipment to block sundries 4. The number of the baffle plates 2 is one, and the first wiring end 21 and the second wiring end 22 are respectively arranged at the two ends of the baffle plate 2 opposite to each other along the first horizontal direction. A first channel is formed between the first wiring end 21 and the first inner side surface of the cabinet 1, and another first channel is formed between the second wiring end 22 and the second inner side surface of the cabinet 1. The height of the baffle plate 2 gradually decreases from the middle to both ends, and the cross section of the baffle plate 2 is in an inverted "V" shape. When the sundries 4 fall on the baffle plate 2, the guiding section of the baffle plate 2 will guide the sundries 4 to the first channel.

[0070] The number of the receiving plates 3 is two, and the two receiving plates 3 are respectively located directly below the two first channels. The receiving plate 3 is arranged obliquely downward, and the height of the receiving plate 3 gradually decreases from the third wiring end 31 to the connection end, so that a stop groove is formed between the receiving plate 3 and the inner side wall of the cabinet 1. When the sundries 4 fall onto the receiving plate 3 through the first channel, the sundries 4 will roll along the inclined direction of the receiving plate 3 under the action of gravity into the stop groove, thereby being able to avoid the bouncing and splashing of the sundries 4 and reducing the possibility of the sundries 4 accidentally falling into the cabinet 1 during the bouncing process.

[0071] In summary, the power cabinet device can achieve the following beneficial effects:

[0072] 1. The overall safety of the device is significantly improved: By setting shielding measures (baffle plate 2 and receiving plate 3) on the top of the cabinet, increasing the safety distance of the equipment in the cabinet 1 and the insulating coating of the distribution copper busbar, etc., serious faults such as internal short circuits in the cabinet 1 can be effectively avoided;

[0073] 2. The baffle plate 2 and the receiving plate 3 of the device are arranged at intervals up and down, reserving the first channel and the second channel for the cable 5 to pass through. Therefore, it will not affect the wiring of the cable 5.

[0074] 3. The space utilization rate of the device is greatly improved: It can effectively utilize the floor area of the computer room, the vertical height space, the internal space of the mechanism, etc., and improve the economy of the station.

[0075] Embodiment 2

[0076] Please refer to Figure 5 , the present utility model also discloses a communication station power supply system, including: a power supply device and the power cabinet device of Embodiment 1.

[0077] Among them, the power supply device is installed in the inner cavity of the cabinet 1 of the power cabinet device, and the baffle plate 2 and the receiving plate 3 of the power cabinet device are used to prevent sundries 4 from falling into the inner cavity of the cabinet 1 from the opening of the cabinet 1.

[0078] Furthermore, the power supply device includes a mains unit, a busbar unit, a battery pack, a primary power-off unit, and a secondary power-off unit. The mains unit is electrically connected to the busbar unit and is used to convert the alternating current of the mains into direct current and supply power to the busbar unit. The battery pack, the primary power-off unit, and the secondary power-off unit are all electrically connected to the busbar unit, and the battery pack, the primary power-off unit, and the secondary power-off unit are in parallel with each other. The battery pack is used to supply direct current to the busbar unit when the mains power is cut off. The primary power-off unit is electrically connected to the first load circuit and is used to control the on / off of the first load circuit. A first threshold is preset in the primary power-off unit. The primary power-off unit is used to control the first load circuit to disconnect when the voltage value of the busbar unit is less than the first threshold. The secondary power-off unit is electrically connected to the second load circuit and is used to control the on / off of the second load circuit. A second threshold is preset in the secondary power-off unit. The second threshold is less than the first threshold. The secondary power-off unit is used to control the second load circuit to disconnect when the voltage value of the busbar unit is less than the second threshold.

[0079] Among them, the mains unit includes a rectifier. One end of the rectifier is connected to the mains power grid, and the other end is connected to the busbar unit. The rectifier is used to convert the mains (alternating current) into direct current. Any commercially available rectifier can be used for the rectifier, and there is no restriction on this.

[0080] It should be noted that when the battery pack is over-discharged, it will cause fatal damage to the battery, and this damage is irreversible, resulting in the scrapping of the entire battery pack. Therefore, in order to avoid over-discharge of the battery pack, a primary power-off unit and a secondary power-off unit are provided in the power supply device of this system. The primary power-off unit is electrically connected to non-essential equipment and is used to control the power-on or power-off of the non-essential equipment. Exemplarily, the non-essential equipment includes lighting equipment, air-conditioning equipment, etc. in a communication station. When the discharge voltage value of the battery pack (i.e., the voltage value in the busbar) is lower than the first threshold, such non-essential equipment is powered off.

[0081] The secondary power-off unit is electrically connected to essential equipment and is used to control the power-on or power-off of the essential equipment. For example, transmission equipment, OLT equipment, etc. in a communication station. When the discharge voltage value of the battery pack (i.e., the voltage value in the busbar) is lower than the first threshold, the secondary power-off unit continues to supply power to the essential equipment to try to ensure the normal power supply of such essential equipment until the discharge voltage value of the battery pack is lower than the second threshold, and then the secondary power-off unit disconnects and powers off the essential equipment.

[0082] It should also be noted that the power supply system of this communication station also includes a monitoring module. The monitoring module can monitor the mains voltage to determine whether the mains unit can supply power normally. At the same time, the monitoring module can also monitor the working states of the rectifier, inverter, and battery pack. The monitoring module can monitor the current, power, cumulative power consumption, power consumption during a certain period, etc. of each output loop. When any of the above loops has a break or failure, the monitoring system issues an alarm to notify the staff to quickly repair the power supply system of this communication station. The monitoring module can also collect and measure devices, and the monitoring module has the necessary accuracy, specifically not less than 0.5 level. The signal output of the monitoring module: It can output simultaneously through the wired RS232 / 485 interface protocol format and the wireless method of 4G / 5G Internet of Things SIM cards. The monitoring module can facilitate the realization of the monitoring function in different on-site conditions and there is always a way.

[0083] It should be noted that the monitoring module can use commercially available equipment as long as it can achieve the above functions. For example: The monitoring unit with the model number CSU501 B can be used.

[0084] The existing important equipment is powered by a single circuit and the reliability is not high. Specifically, as Figure 1 shown, the "secondary power-off" busbar is led out by a secondary power-off contactor and is an overall single-section busbar. The communication station configures "secondary power-off" in the switching power supply system to improve the power supply reliability of important equipment, that is, after the mains power outage for a period of time, in order to ensure that important equipment can continue to operate normally, the practice of sacrificing some unimportant equipment. Important equipment is powered by dual power supplies. However, in the currently used switching power supply system, because the "secondary power-off" is only a single-ended busbar configuration, when the secondary power-off contactor of the connected power supply fails or the busbar has a short circuit, it may cause the important equipment to lose power immediately and the communication cannot provide services. The dual power supply system designed to improve importance actually does not play any role. Therefore, the current configuration has a low power supply reliability for important equipment.

[0085] To address the problem of low power supply reliability of the above-mentioned important equipment, the secondary power-off unit in the power supply system of this communication station includes multiple secondary power-off contactors, which are connected in parallel. One end of the multiple secondary power-off contactors is electrically connected to the busbar unit, and the other end is connected to the second load circuit. The secondary power-off contactors in this embodiment can use commercially available contactor equipment.

[0086] Exemplarily, the number of secondary power-down contactors is two, and the two secondary power-down contactors are arranged in parallel. When one of the secondary power-down contactors fails, the other secondary power-down contactor can still work normally. In other words, the power supply system of this communication station adopts dual power supply for important equipment, that is, the secondary power-down is divided into two sections, A and B, which are respectively led out from contactors A and B, ensuring the power supply safety of important equipment throughout the process from the switch to the busbar.

[0087] As Figure 5 shown, the primary power-down unit includes a primary power-down contactor. Among them, both the primary power-down contactor and the secondary power-down contactor can adopt commercially available contactor equipment.

[0088] In addition, the existing power supply equipment in communication stations has no reliable AC output and cannot meet the needs of some users. Most of the equipment installed and used in communication stations is powered by -48V power supply according to the habits of the communication industry. However, there are always a small number of communication services and equipment, such as common protocol converters, switches, etc., that require AC 220V power supply. The common methods used on-site in the early stage are either to reduce the power supply level for users and directly supply power with commercial power, but the service will be interrupted when the commercial power fails; or to externally connect a set of small UPS and its supporting batteries to specifically supply power to these important AC equipment, resulting in a significant increase in construction investment.

[0089] In response to this, the power supply equipment of this communication station power system also includes an inverter. One end of the inverter is electrically connected to the busbar unit, and the other end is connected to the third load circuit. The inverter is used to convert direct current into alternating current and supply AC power to the third load circuit. By setting the inverter, this system can achieve all types of power supply, that is, it has two reliable power supply modes with battery backup, namely AC 220V and DC -48V, comprehensively meeting the various power consumption needs of general communication stations and improving the overall service reliability.

[0090] The power supply system of this communication station can meet the on-site requirements of general communication stations: such as dual power supply for important loads, energy consumption monitoring, reliable simultaneous AC and DC power supply, multi-mode output of monitoring signals, etc. Further, the overall safety of this communication station power system is significantly improved: measures such as cabinet top shielding, safety distance, and insulation coating of distribution copper bars can effectively avoid serious faults of internal short circuits in cabinet 1. Furthermore, the system space utilization rate of this communication station power system is greatly improved: it can effectively utilize the floor area of the computer room, vertical height space, internal space of the mechanism, etc., improving the economy of the station. In addition, this communication station power system eliminates sunk costs by deleting idle device configurations: for the redundant configuration devices in existing products, such as dual-circuit commercial power introduction switches, AC commercial power distribution units in cabinet 1, etc., no configuration is made to avoid capital sinking.

[0091] Furthermore, the busbar in the system is insulated with an insulating sheath and the connecting bolts are removed in the cabinet, thereby avoiding the presence of visible live conductors.

[0092] After the AC mains is rectified, it becomes 48V DC, which directly powers the communication equipment. The 48V battery pack is directly connected to the busbar of the cabinet. When the mains power is cut off, the battery powers the load. After the mains power is restored, the rectifier charges the battery. The system converts the 48V DC into 220V AC through the inverter to power the AC communication equipment. The advantage of this setting is that when the mains power is cut off, the battery can still power the load, and the communication equipment will not be shut down.

[0093] like Figure 1 As shown, it should be noted that the existing communication station power supply equipment still has the following problems:

[0094] 1. In the existing switching power supply system, the internal DC busbar is exposed, which is very easy to cause serious faults such as electric shock casualties caused by contact during construction, and debris falling from the top 4, which may cause short circuits. In addition, in order to save space, the existing switching power supply system arranges multiple output switches in parallel, which is a dense arrangement. For example, 8 air switches are placed close to each other without retaining a certain safety distance. It is easy for one switch to burn out, the arc temperature is high, and the adjacent switches are easily burned, the scope of the accident is expanded, and the consequences are very serious. At the same time, because the switches are arranged too densely, it is very difficult to lay out the lines on site for installation and construction, and there are many hidden dangers in the later maintenance. Electrical short circuits may occur at any time due to insufficient safety distance.

[0095] 2. Electrical safety cannot be guaranteed: The top of cabinet 1 is open, and electrical short circuit faults may easily occur due to falling objects during construction.

[0096] 3. Serious waste of space: The specifications and dimensions of the cabinet 1 are not standardized, and the internal layout is not scientific. The station switch power supply system in use is generally a dedicated switch power supply cabinet 1, with various sizes such as 600*300mm, 600*450mm, 600*600mm, etc., and the height is not uniform, including 1400mm, 1600mm, 1800mm, etc. In order to reduce the cost of internal connecting cables and copper bars, the switch power supply in use is very compactly arranged in the power distribution part, but in terms of the use of cabinet 1 space, it is seriously wasted. For example, some existing switch power supply systems have very loose space in the middle and lower parts. For the cabinet 1 as a whole, nearly 40% of the space is vacant. This is a serious waste of precious station space.

[0097] 4. The monitoring system of the existing communication station power supply system is technologically backward and lacks measures such as power monitoring. For the in-use switch power supply system, the monitoring module has simple functions and can only detect basic parameters such as voltage and current. At present, due to the requirements of energy conservation, emission reduction, and dual-carbon management, it is necessary to monitor the power consumption of each output and each device at the switch power supply, including the power consumption within a certain period of time, cumulative value, etc. Therefore, this function needs to be improved in the new generation of products.

[0098] 5. The monitoring information upload channels are simple and single, unable to meet the requirements. For the in-use switch power supply, the main channels through which the monitoring module can upload the collected signals are in the RS232 / 485 format and IP format, which can meet the needs of most sites. However, in some sites such as "optical repeater stations", due to the lack of local services and the inability to provide a monitoring information upload channel for the dynamic environment, it is impossible to conduct dynamic environment monitoring for this station. In addition, due to the requirements of various management information of the station, the dynamic environment monitoring information of some stations may need to be output in multiple directions. Currently, only one output port is configured in the monitoring module of the switch power supply system, which obviously cannot meet the requirements and urgently needs to be expanded.

[0099] 6. Device waste: The dual-way AC input and AC distribution unit together waste about 15% of the cost. Communication machine rooms are classified hierarchically. In important hub machine rooms, the power consumption is large, and the switch power supplies are all discrete with a capacity of 2000A and above, and are all connected in a dual-way manner. They are not the combined switch power supplies referred to in this embodiment. For general ordinary communication stations, it is almost impossible to have dual-way mains power input; during generator power generation, according to the specifications of the large machine room, the wiring should be done at the separately configured "generator, mains switch cabinet". Therefore, the dual-way power input configuration inside the switch power supply system is a typical idle device. Through comprehensive calculation, the additional configuration of a set of molded case switches, dual-power switching facilities, and copper busbars with a rating of more than 100A that have no chance of being used basically accounts for more than 10% of the overall system cost, which is purely a waste.

[0100] At the same time, the electricity consumption in the communication station is divided into two parts: communication electricity consumption (communication equipment) and non-communication electricity consumption (air conditioning, lighting, etc.). According to the specifications, the non-communication electricity consumption has a dedicated AC distribution box. For the safety of the communication network, it is strictly prohibited to privately connect non-communication electricity loads inside the switch power supply. Therefore, the AC distribution unit configured inside the previously used switch power supply has no meaning at all and instead increases the procurement cost by at least 5% or more. Moreover, it creates an additional safety hazard, that is, the idle distribution unit is likely to increase the possibility of wiring errors.

[0101] 7. The configuration of the power supply equipment in existing communication stations is backward: the number and capacity of the secondary power-off ports cannot meet the on-site requirements. With the development of communication technologies and services, network construction methods and concepts such as minimalist networks and BBU pools have led to a large number and large capacity of communication loads in end-user computer rooms. Therefore, it is required that the switching power supplies in ordinary stations must have a large output capacity and a large number of output ports. In existing systems, on-site power consumption is often very difficult due to insufficient ports.

[0102] For the above technical problem 1, the power supply system of this communication station adopts the power cabinet device in Embodiment 1. The power cabinet device in Embodiment 1 has an optimized layout, which can achieve better space utilization rate, so that multiple output switches can be arranged at a specified safe distance. At the same time, a necessary safe distance is maintained between each electrical component (switch, fuse) and the cable 5, which can ensure safety and is conducive to heat dissipation. By clearly requiring a safe distance between each electrical component, electrical short-circuit faults caused by insufficient safe distance can be avoided. At the same time, an insulating sheath is provided on the outside of the busbar in the system, and the connecting bolts are removed in the cabinet, so as to avoid visible live conductors.

[0103] For the above problems 2 and 3, the power supply system of this communication station adopts the power cabinet device in Embodiment 1, which can block materials through the baffle 2 and the object receiving plate 3 on the top of the cabinet 1 without affecting the wiring of the power supply equipment. Moreover, the power cabinet device in Embodiment 1 has an optimized layout, which can achieve better space utilization rate.

[0104] For the above problems 4 and 5, the power supply system of this communication station selects a monitoring device that can simultaneously monitor the working states of rectifiers, inverters, and battery packs. This monitoring module can monitor the current, power, cumulative power consumption, power consumption during a certain period, etc. of each output loop. The monitoring module can also collect and measure devices, and the monitoring module has the necessary accuracy, specifically not less than 0.5 level. Moreover, the signal output requirement of this monitoring module can be output simultaneously through the wired RS232 / 485 interface protocol format and the wireless method of 4G / 5G Internet of Things SIM cards. The monitoring module can facilitate the realization of the monitoring function in different on-site conditions. It should be noted that the monitoring module can use commercially available equipment as long as the above functions can be achieved.

[0105] For the above technical problem 6, as Figure 5 shown, the power supply system of this communication station saves the overall cost of the system by adopting single-circuit mains introduction.

[0106] For the above technical problem 7, in this embodiment, by adopting the power cabinet device in Embodiment 1, while improving the space utilization rate, the number of secondary power-off ports can be increased to reduce the difficulty of on-site power consumption.

[0107] In summary, the communication station power supply system has the following beneficial technical effects:

[0108] 1. It can realize dual-circuit (double secondary power-off contactor) power supply for important equipment: the secondary power-off is divided into two sections, A and B, which are respectively led out from the two contactors A and B, ensuring the power supply safety of important equipment from the switch to the busbar;

[0109] 2. Add shielding measures on the top of the cabinet: The shielding plate 2 and the receiving plate 3 in Example 1 can prevent construction debris 4 from falling and causing electrical short circuit accidents, thereby greatly improving overall safety;

[0110] 3. Require safe distance: clearly require that each electrical component maintain a safe distance:

[0111] 4. Ability to realize all types of power supply: It has two reliable power supply modes with battery backup: AC 220V and DC -48V, which can fully meet various power requirements of general communication stations and improve overall business reliability;

[0112] 5. Good space utilization: make full use of the cabinet space and install small equipment commonly found in the station;

[0113] 6. Equipped with 5 shielded cable channels: The entire cabinet is equipped with 5 dedicated vertical cable channels from top to bottom to achieve electromagnetic shielding and avoid electromagnetic interference.

[0114] 7. Expand the output format of monitoring information: wired, wireless, and multiple formats of output and reporting.

[0115] 8. Ability to realize energy consumption monitoring: The overall input of the system and each output can be measured with sufficient accuracy.

[0116] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A power cabinet device, characterized in that: include: Cabinet (1), shielding plate (2) and receiving plate (3), The inner cavity of the cabinet (1) is used to install power supply equipment, and the top of the cabinet (1) is provided with an opening. The shielding plate (2) and the receiving plate (3) are accommodated in the inner cavity of the cabinet (1) and are connected to the inner wall of the cabinet (1). The shielding plate (2) and the receiving plate (3) are both located above the power supply device to shield debris that falls into the opening. The shielding plate (2) and the receiving plate (3) are arranged at intervals in the vertical direction, the shielding plate (2) is partially located above the receiving plate (3), the width of the vertical projection of the shielding plate (2) is smaller than the width of the opening, and a first channel is provided between the inner side wall of the cabinet (1) and the end of the shielding plate (2). The receiving plate (3) faces the first channel, and the width of the vertical projection of the receiving plate (3) is greater than the width of the first channel, and is used to receive debris dropped through the first channel. A second channel is formed between the shielding plate (2) and the receiving plate (3), and the second channel is folded back, and the opening, the first channel, the second channel and the inner cavity of the cabinet (1) are connected in sequence.

2. The power cabinet device according to claim 1, characterized in that: The shielding plate (2) is provided with a first wiring end portion (21), the inner side wall of the cabinet (1) is provided with a first inner side surface, and the plane on which the first inner side surface is located is perpendicular to a first horizontal direction, The first wiring end portion (21) and the first inner side surface are arranged at intervals along a first horizontal direction, so that a first channel is formed between the first wiring end portion (21) and the opposite first inner side surface.

3. The power cabinet device according to claim 2, characterized in that: The shielding plate (2) is further provided with a second wiring end portion (22), wherein the second wiring end portion (22) and the first wiring end portion (21) are respectively located at two ends of the shielding plate (2) and are arranged opposite to each other along a first horizontal direction. The inner side wall of the cabinet (1) is further provided with a second inner side surface, the second inner side surface is arranged opposite to the first inner side surface, and the shielding plate (2) is located between the first inner side surface and the second inner side surface. The second wiring end (22) of the shielding plate (2) is spaced from the second inner side surface along a first horizontal direction, so that a first channel is also formed between the second wiring end (22) and the opposite second inner side surface.

4. The power cabinet device according to claim 3, characterized in that: The first wiring end portion (21) and the second wiring end portion (22) both extend along a second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, and the cross-sections of the first wiring end portion (21) and the second wiring end portion (22) are both in the shape of a circular arc that bends downward.

5. The power cabinet device according to claim 3 or 4, characterized in that: The shielding plate (2) comprises a bending section and two guiding sections, the bending section is located between the two guiding sections, and the two guiding sections are connected via the bending section. The guide section is inclined downward so that the height of the shielding plate (2) gradually decreases from the middle to both ends, and the outer ends of the two guide sections are respectively connected to the first wiring end (21) and the second wiring end (22).

6. The power cabinet device according to claim 3, characterized in that: The number of the connecting plates (3) is the same as the number of the first channels, and each connecting plate (3) corresponds to a first channel. The number of the first channels is two, the number of the receiving plates (3) is two, and the two receiving plates (3) are respectively opposite to the two first channels. The two receiving plates (3) are arranged opposite to each other along a first horizontal direction, and the two ends of the receiving plates (3) are respectively provided with a third wiring end (31) and a connection end, and the connection ends of the two receiving plates (3) are respectively connected to the first inner side surface and the second inner side surface, and the third wiring end portions (31) of the two receiving plates (3) are both located directly below the shielding plate (2).

7. The power cabinet device according to claim 6, characterized in that: The third wiring end portion (31) of the connecting plate (3) extends along a second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, and the cross section of the third wiring end portion (31) is in the shape of a circular arc that bends downward.

8. A communication station system, characterized in that: It comprises a power supply device and a power cabinet device according to any one of claims 1 to 7, The power supply device is installed in the inner cavity of the cabinet (1) of the power cabinet device, and the shielding plate (2) and the receiving plate (3) of the power cabinet device are used to prevent debris from falling into the inner cavity of the cabinet (1) through the opening of the cabinet (1). The power supply equipment includes a mains unit, a busbar unit, a battery pack, a primary power-off unit and a secondary power-off unit. The mains unit is electrically connected to the busbar unit and is used to convert the alternating current of the mains into direct current and supply power to the busbar unit. The battery pack, the primary power-off unit and the secondary power-off unit are all electrically connected to the busbar unit, and the battery pack, the primary power-off unit and the secondary power-off unit are connected in parallel. The battery pack is used to provide direct current power to the busbar unit when the city power is cut off. The primary power-off unit is electrically connected to the first load circuit and is used to control the first load circuit to be turned on / off. A first threshold is preset in the primary power-off unit. The primary power-off unit is used to control the first load circuit to be turned off when the voltage value of the busbar unit is less than the first threshold. The secondary power-off unit is electrically connected to the second load circuit and is used to control the second load circuit to be turned on / off. A second threshold is preset in the secondary power-off unit, and the second threshold is smaller than the first threshold. The secondary power-off unit is used to control the second load circuit to be disconnected when the voltage value of the busbar unit is smaller than the second threshold.

9. The communication station system according to claim 8, characterized in that: The secondary power-off unit includes a plurality of secondary power-off contactors, which are arranged in parallel, one end of which is electrically connected to the busbar unit, and the other end of which is connected to the second load circuit.

10. The communication station system according to claim 9, characterized in that: The power supply device further includes an inverter. One end of the inverter is electrically connected to the busbar unit, and the other end is connected to the third load circuit. The inverter is used to convert direct current into alternating current and provide alternating current power to the third load circuit.

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