Intelligent integrated railway communication base station high-frequency switching power supply system

Abstract

This utility model discloses an intelligent integrated high-frequency switching power supply system for railway communication base stations, belonging to the field of railway communication base station power supply technology. It includes a housing and supporting legs. Multiple supporting legs are fixedly connected to the bottom of the housing. Multiple moving components and multiple positioning components are installed inside the housing. Each moving component includes multiple guide grooves formed inside the housing, with multiple guide blocks slidably connected inside the guide grooves. A moving frame is fixedly connected between the guide blocks. Through the cooperation of the guide grooves and guide blocks, it can quickly pull out or push in units such as DC power distribution units, rectifier units, AC power distribution units, and modular inverters mounted on the moving frame from the housing. This allows staff to inspect, repair, or replace a single unit without interfering with other components, thus eliminating the need to disassemble complex connectors one by one.

Description

Technical Field

[0001] This utility model relates to the field of railway communication base station power supply technology, and more specifically, to an intelligent integrated high-frequency switching power supply system for railway communication base stations. Background Technology

[0002] As a core node of railway information infrastructure, the stability of the power supply system of railway communication base stations directly affects the reliable operation of critical functions such as train dispatching, signal transmission, and emergency communication. With the development of railway networks towards high speed and intelligence, the requirements for power supply systems in communication base stations have evolved from simple power supply assurance to a comprehensive demand for high efficiency, reliability, and ease of maintenance. Traditional railway communication power supply systems often adopt a split structure, dispersing AC power distribution, rectification, DC power distribution, and inverter modules. This results in low system integration, a large footprint, and complex cable connections between modules, increasing the risk of electromagnetic interference and requiring individual equipment checks during maintenance, leading to low efficiency. Furthermore, the complex environment along railway lines exposes base stations to harsh conditions such as high temperature, high humidity, dust, and mechanical vibration. Traditional fixed-installation power modules are prone to poor heat dissipation and loose connections after long-term operation, further increasing the probability of system failure.

[0003] With the gradual popularization of high-frequency switching power supply technology, railway communication power supply systems have achieved efficiency improvements and size optimizations, but significant technical bottlenecks still exist. On the one hand, the modular design of existing high-frequency switching power supplies mostly remains at the power unit level, lacking a restructuring of the overall system architecture, and the collaborative control and fault isolation capabilities between functional modules are limited. For example, the hard-wired connection between the rectifier unit and the DC power distribution unit may trigger a chain reaction in the event of a fault, leading to a power outage throughout the station. On the other hand, railway base stations have extremely high requirements for the redundancy backup and rapid recovery capabilities of the power system, but the integration of battery packs and power modules in traditional solutions is insufficient, posing a risk of power interruption during switching, and battery status monitoring relies on manual inspections, making it impossible to detect potential problems such as capacity degradation in a timely manner. In addition, railway base stations are widely distributed and geographically remote, and traditional power systems lack remote monitoring and intelligent management functions, requiring maintenance personnel to conduct frequent on-site inspections, resulting in high labor costs. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, this utility model provides an intelligent integrated railway communication base station high-frequency switching power supply system. Through the cooperation of guide grooves and guide blocks, it can quickly pull out or push in units such as DC power distribution units, rectifier units, AC power distribution units, and modular inverters installed on the mobile frame from the housing, allowing staff to inspect, repair, or replace a single unit without interfering with other components.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A smart integrated railway communication base station high-frequency switching power supply system includes a housing and supporting legs. Multiple supporting legs are fixedly connected to the bottom of the housing. Multiple moving components and multiple positioning components are installed inside the housing. Each moving component includes multiple guide grooves formed inside the housing, with multiple guide blocks slidably connected inside the guide grooves. Moving frames are fixedly connected between the guide blocks. A DC power distribution unit, a rectifier unit, an AC power distribution unit, and a modular inverter are respectively mounted on the upper surfaces of the multiple moving frames from top to bottom. Each positioning component includes a fixing block fixedly mounted on the outer surface of the guide blocks. Positioning holes are formed inside both the fixing block and the guide grooves.

[0009] Furthermore, the top of the outer casing has multiple heat dissipation holes.

[0010] Furthermore, the DC power distribution unit includes a primary power-off branch, a secondary power-off branch, and a battery switch branch.

[0011] Furthermore, a positioning pin is threaded into the internal part of the positioning hole, and a positioning plate is fixedly connected to the outer surface of the positioning pin.

[0012] Furthermore, the modular inverter includes inverter DC terminals and inverter AC outputs mounted on the back of the housing.

[0013] Furthermore, the rectifier unit includes a rectifier and a controller.

[0014] 3. Beneficial effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] (1) This solution, through the cooperation of guide slots and guide blocks, can quickly pull out or push in units such as DC power distribution units, rectifier units, AC power distribution units and modular inverters installed on the mobile frame from the casing. This allows staff to inspect, repair or replace a unit individually without interfering with other components, thus eliminating the need to disassemble complex connectors one by one. The entire maintenance process is more efficient and faster, thereby reducing equipment downtime, improving system availability and reliability, and thus achieving rapid maintenance and replacement.

[0017] (2) This solution ensures that the guide block is firmly fixed in the guide groove by the cooperation of the positioning pin, positioning hole and positioning plate, preventing the vibration generated by the outer shell during transportation or operation from causing the mobile frame to move, thereby improving the stability of the device and improving work efficiency, and also providing more stable and reliable power support for railway communication base stations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a partial structural cross-sectional view of the present invention.

[0021] Figure 4 This is a front sectional view of the outer shell structure of this utility model.

[0022] Figure 5 This is a cross-sectional view of the rear structure of the outer shell of this utility model.

[0023] Figure 6 This is a diagram of the integrated system of the power lighting dual-switching box and the power surge protection box of this utility model;

[0024] Figure 7 This is a schematic diagram of the overall cable structure of this utility model.

[0025] Explanation of the labels in the diagram:

[0026] 1. Housing; 101. Support leg; 102. Heat dissipation hole; 2. Moving component; 201. Guide groove; 202. Guide block; 203. Moving frame; 204. AC power distribution unit; 205. DC power distribution unit; 2051. Primary power-off branch; 2052. Secondary power-off branch; 2053. Battery switch branch; 206. Rectifier unit; 2061. Rectifier; 2062. Controller; 3. Positioning component; 301. Positioning hole; 302. Positioning pin; 303. Positioning plate; 4. Modular inverter. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Example 1

[0031] Reference Figures 1-7 This is the first embodiment of the present invention. This embodiment provides an intelligent integrated railway communication base station high-frequency switching power supply system, including a housing 1 and support legs 101. Multiple support legs 101 are fixedly connected to the bottom of the housing 1, and multiple moving components 2 are installed inside the housing 1.

[0032] Specifically, the mobile component 2 includes multiple guide slots 201 formed inside the housing 1. Multiple guide blocks 202 are slidably connected inside the guide slots 201. A mobile frame 203 is fixedly connected between the guide blocks 202. A DC power distribution unit 205, a rectifier unit 206, an AC power distribution unit 204, and a modular inverter 4 are respectively installed on the upper surface of the multiple mobile frames 203 from top to bottom. Multiple heat dissipation holes 102 are formed on the top of the housing 1. The DC power distribution unit 205 includes a primary power-off branch 2051, a secondary power-off branch 2052, and a battery switch branch 2053. The modular inverter 4 includes an inverter DC terminal block and an inverter AC output mounted on the back of the housing 1. The rectifier unit 206 includes a rectifier 2061 and a controller 2062.

[0033] Furthermore, the movable frame 203 is pulled out through the guide groove 201 and guide block 202, which facilitates the inspection or replacement of the DC power distribution unit 205, rectifier unit 206, AC power distribution unit 204, and modular inverter 4.

[0034] It should be noted that the AC power distribution unit 204 is configured as follows:

[0035] Manual switching (QF51, QF52): 6A / 1P. Note that if the AC input power supply is in automatic switching mode, the manual switch must not be closed. When the switching control board in the system malfunctions, but the automatic switching contactor is working normally, closing the manual switch can manually engage the corresponding contactor coil to achieve manual switching to AC power.

[0036] Auxiliary power switches (QF53, QF54): 6A / 1P. During field operation, if the system is not connected to the battery pack and only has two AC power lines connected, the automatic transfer contactor will only engage after the auxiliary power switches are closed. When QF53 is closed, the first AC power line supplies power to the switching control board; when QF54 is closed, the second AC power line supplies power to the switching control board. QF53 and QF54 provide one power supply to the switching control board within the system; the system's positive and negative busbars and the battery pack provide the other power supply to the switching control board. The normal operation of the switching control board is guaranteed as long as any one of the power supplies is functioning correctly.

[0037] Module switch (QF55~QF60): 20A / 1P, AC input switch for rectifier module.

[0038] Air conditioner (QF61): 40A / 3P, AC IoT circuit breaker, connected to the monitoring platform via 485 communication line, which can remotely control the opening and closing of the air conditioner switch.

[0039] Guaranteed lighting (QF62): 25A / 1P, AC IoT circuit breaker, connected to the monitoring platform via 485 communication line, allowing remote closing and opening of the guaranteed lighting switch.

[0040] Disaster Prevention (QF63): 32A / 1P, AC output circuit breaker for disaster prevention.

[0041] Inverter output branch (QF64~QF68): 32A / 1P, the AC output branch of the inverter after the power supply is connected in parallel with the inverter.

[0042] Rectifier Unit 206 Configuration:

[0043] Rectifier 2061: 30A and 50A modules can be installed. The size and interface are compatible. The standard configuration is a 30A module.

[0044] Controller 2062: DKD51.

[0045] Battery temperature interface: Two sets of lead-acid battery temperature detection interfaces are reserved.

[0046] Dry contacts and DI interfaces: Configure 4 sets of normally open dry contact interfaces; 4 sets of DI interfaces. The normally open and normally closed types of the DI interfaces can be set in the controller, with normally open as the default.

[0047] DC power distribution unit 205 configuration:

[0048] When powered down, the 2051 circuits are distributed as follows: QF1 to QF4 are 10A / P, QF5 to QF8 are 16A / P, QF9 to QF13 are 32A / P, and QF14 to QF18 are 63A / P.

[0049] Secondary power-down branch circuit 2052: QF19~QF22 are 10A / 1P, QF23~QF26 are 16A / 1P, QF27~QF31 are 32A / 1P, and QF32~QF36 are 63A / 1P.

[0050] Battery switch branch 2053: QF41~QF43 are 125A / 1P

[0051] Example 2

[0052] Reference Figures 1-7 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, and multiple positioning components 3 are installed inside the outer shell 1.

[0053] Specifically, the positioning component 3 includes a fixing block that fixes the outer surface of the guide block 202. The fixing block and the guide groove 201 are both provided with positioning holes 301. The positioning holes 301 are threaded with positioning pins 302. The outer surface of the positioning pins 302 is fixedly connected with positioning plates 303.

[0054] Furthermore, first rotate the positioning plate 303 to remove the positioning pin 302 from the positioning hole 301, and then repeat the process to remove the other positioning pin 302, thereby releasing the fixed limit of the moving frame 203, making it easier for the staff to remove the moving frame 203 through the cooperation of the guide block 202 and the guide groove 201.

[0055] Working principle: In use, first rotate the positioning plate 303 to remove the positioning pin 302 from the positioning hole 301, and then remove the other positioning pin 302 in the same way to release the fixed limit of the moving frame 203. Repeat this step to release the fixed limit of all moving frames 203. Repeat the above steps to install the DC power distribution unit 205, rectifier unit 206, AC power distribution unit 204 and modular inverter 4 onto the corresponding moving frame 203 in sequence. After installation, rotate the positioning plate 303 to reconnect the positioning pin 302 to the positioning hole 301 by thread, so as to ensure that the moving frame 203 is firmly fixed inside the outer shell 1.

[0056] When the AC mains input is normal, the rectifier unit 206 converts the AC power distribution unit 204 into 48V DC power. The 48V DC output of the rectifier unit 206 supplies power to the DC load and charges the battery pack. When the AC mains input is abnormal, the power supply switches from the AC mains input to the backup AC power supply if there is a backup AC power supply available. During the switching period, the battery pack provides 48VDC power to the load. When the AC mains input is abnormal and there is no backup AC power supply or the backup AC power supply is also abnormal, the battery pack continuously provides 48VDC power to the DC load. After the AC mains input or backup AC power supply returns to normal, the rectifier unit 206 supplies power to the DC load while simultaneously charging the battery pack.

[0057] When maintenance is required on the internal components of the housing 1, first disconnect the relevant power supply to ensure the safety of the personnel. Then, remove the positioning pin 302 from the positioning hole 301 by rotating the positioning plate 303. Then, pull out the moving frame 203 through the guide groove 201 and the guide block 202 to facilitate the inspection or replacement of the primary power-off branch 2051, secondary power-off branch 2052, monitoring unit 207, AC power distribution unit 204, DC power distribution unit 205 and rectifier unit 206. After maintenance is completed, push the moving frame 203 back into the housing 1 and fix it with the positioning pin 302.

[0058] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A smart integrated railway communication base station high-frequency switching power supply system, comprising a housing (1) and support legs (101), wherein a plurality of support legs (101) are fixedly connected to the bottom of the housing (1), characterized in that: The housing (1) is equipped with a plurality of moving components (2) and a plurality of positioning components (3). The mobile component (2) includes multiple guide slots (201) formed inside the housing (1). Multiple guide blocks (202) are slidably connected inside the guide slots (201). Mobile frames (203) are fixedly connected between the guide blocks (202). The upper surfaces of the multiple mobile frames (203) are respectively equipped with a DC power distribution unit (205), a rectifier unit (206), an AC power distribution unit (204), and a modular inverter (4) from top to bottom. The positioning component (3) includes a fixing block that fixes the outer surface of the guide block (202), and positioning holes (301) are provided inside both the fixing block and the guide groove (201).

2. The intelligent integrated railway communication base station high-frequency switching power supply system according to claim 1, characterized in that: The top of the outer casing (1) has multiple heat dissipation holes (102).

3. The intelligent integrated railway communication base station high-frequency switching power supply system according to claim 1, characterized in that: The DC power distribution unit (205) includes a primary power-down branch (2051), a secondary power-down branch (2052), and a battery switch branch (2053).

4. The intelligent integrated railway communication base station high-frequency switching power supply system according to claim 1, characterized in that: The positioning hole (301) is internally threaded with a positioning pin (302), and a positioning plate (303) is fixedly connected to the outer surface of the positioning pin (302).

5. The intelligent integrated railway communication base station high-frequency switching power supply system according to claim 1, characterized in that: The modular inverter (4) includes inverter DC terminals and inverter AC output mounted on the back of the housing (1).

6. The intelligent integrated railway communication base station high-frequency switching power supply system according to claim 1, characterized in that: The rectifier unit (206) includes a rectifier (2061) and a controller (2062).

Images