Multipath output power supply conversion box with safety protection

Abstract

The utility model relates to a multipath output power supply conversion box with safety protection, the power supply conversion box further comprises a power supply conversion unit, an air switch, a PLC module group, a relay group, a plug group and a wiring terminal unit, the wiring terminal unit comprises an input end, a protection end and an output end, and the PLC module group, the relay group and the plug group are located on a cabinet body; the relay module group is respectively connected with the plug group and the relay group, the air switch, the input end of the wiring terminal unit and the plug group are connected in sequence, or the air switch, the input end of the wiring terminal unit, the power conversion unit, the protection end of the wiring terminal unit, the relay group, the output end of the wiring terminal unit and the plug group are connected in sequence. According to the utility model, two paths of 220V input are adopted, one path is used for supplying power to the 110v power supply conversion unit, the other path is used for supplying power to the 24v power supply conversion unit, the 5v power supply conversion unit and the 220v output plug, and a load is divided into two parts.

Description

Technical Field

[0001] This utility model relates to the field of power conversion technology, and in particular to a multi-output power conversion box with safety protection. Background Technology

[0002] Urban rail transit provides citizens with a convenient mode of transportation, and subways have become one of the preferred modes of transport. The signaling system is the control system for urban rail transit train operation, aiming to ensure the safety of passengers and equipment. Urban rail transit signaling control systems possess high safety and reliability, and a complete test of the signaling system is necessary before on-site trial operation and official passenger service commencement. The test platform has both AC and DC power supplies. The AC power supply uses 220V, while the DC power supply uses various voltages such as 110V, 24V, and 5V, and multiple AC and DC power supplies are required.

[0003] Utility model disclosure CN216771941U discloses a multifunctional power supply testing device. This device includes an AC power supply testing module, which outputs three-phase AC power, three-phase adjustable AC power, single-phase AC power, and single-phase adjustable AC power; a DC power supply testing module, with the output terminal of the AC power supply testing module electrically connected to the input terminal of the DC power supply testing module, outputting multiple DC voltage power supplies; and a constant voltage power supply testing module, with the output terminal of the DC power supply testing module electrically connected to the input terminal of the constant voltage power supply testing module, outputting multiple DC constant voltage power supplies. This utility model solves the problem of existing technologies lacking multi-output functionality and only being able to output a single power supply, resulting in limited functionality and inability to perform multifunctional testing. However, it also suffers from low safety and complex structure.

[0004] Therefore, providing a multi-output power converter box that is highly safe, has stable conversion, and has a simple structure is an urgent problem to be solved. Utility Model Content

[0005] The purpose of this invention is to overcome the defects of the existing technology and provide a multi-output power converter box with safety protection.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] According to one aspect of this utility model, a multi-output power conversion box with safety protection is provided, including a cabinet and a positioning plate. The positioning plate is located inside the cabinet. The power conversion box also includes a power conversion unit, a circuit breaker, a PLC module group, a relay group, a plug group, and a terminal block unit. The dual 220V inputs are respectively connected to the circuit breaker. The terminal block unit, the power conversion unit, and the circuit breaker are fixed on the positioning plate. The terminal block unit includes an input terminal, a protection terminal, and an output terminal. The PLC module group, the relay group, and the plug group are located on the cabinet. The relay module group is respectively connected to the plug group and the relay group. The circuit breaker, the input terminal of the terminal block unit, and the plug group are connected sequentially, or the circuit breaker, the input terminal of the terminal block unit, the power conversion unit, the protection terminal of the terminal block unit, the relay group, the output terminal of the terminal block unit, and the plug group are connected sequentially.

[0008] As a preferred technical solution, the power conversion unit includes a 110V power conversion subunit, a 24V power conversion subunit, and a 5V power conversion subunit.

[0009] As a preferred technical solution, the input end of the terminal block unit includes a 220V terminal block group, the output end of the terminal block unit includes a DC terminal block group, and the protection end of the terminal block unit includes a fuse terminal block group; the 220V terminal block group and the DC terminal block group include terminals arranged in sequence, the fuse terminal block group includes fuse terminals arranged in sequence, and the fuse terminals are equipped with fuses.

[0010] As a preferred technical solution, the terminal blocks include 110V terminal blocks, 24V terminal blocks, 5V terminal blocks, and 220V terminal blocks; the DC terminal block group includes 110V terminal blocks, 24V terminal blocks, and 5V terminal blocks arranged in sequence, and the 220V terminal block group includes 220V terminal blocks arranged in sequence.

[0011] As a preferred technical solution, the terminal block unit further includes an end plate, and there is an end plate between the 220V terminal block group, the DC terminal block group and the fuse terminal block group; two layers of end plates are provided between the 110V terminal block and the 24V terminal block and between the 24V terminal block and the 5V terminal block.

[0012] As a preferred technical solution, an end plate is provided between the 110V terminals, an end plate is provided between every two 24V terminals, an end plate is provided between every two 5V terminals, and an end plate is provided between every two 220V terminals.

[0013] As a preferred technical solution, the terminal block unit further includes an adjacent jumper, wherein each pair of 24V terminals is provided with an adjacent jumper, each pair of 5V terminals is provided with an adjacent jumper, and each pair of 220V terminals is provided with an adjacent jumper.

[0014] As a preferred technical solution, the cabinet includes a front baffle and a rear baffle. The front baffle includes a light panel and a filler plate arranged in sequence, and the light panel is equipped with a power indicator light. The plug group is located on the rear baffle and includes a 110V output plug, a 24V output plug, a 5V output plug, a 220V output plug, a 220V input plug, and a DB9 female plug. The rear baffle is provided with a circuit breaker interface.

[0015] As a preferred technical solution, the cabinet further includes a side panel, the side panel including a relay base assembly, the PLC module assembly and the relay base assembly being fixed on the side panel, and the relay assembly being fixed on the relay base assembly; the side panel is provided with heat dissipation holes.

[0016] As a preferred technical solution, the positioning plate and the side plate are both provided with terminal blocks and guide rails, the rear baffle is provided with guide rails, the wiring terminal unit is fixed by the terminal blocks and guide rails, the PLC module group and the relay base group are fixed by the terminal blocks and guide rails, and the circuit breaker interface is fixed by the guide rails.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This utility model has two circuit breakers, with dual 220V input corresponding to the number of circuit breakers. One circuit supplies power to the 110V power conversion unit, and the other circuit supplies power to the 24V power conversion unit, the 5V power conversion unit, and the 220V output plug, thus dividing the load into two parts to ensure the safety and reliability of the output power.

[0019] 2. The PLC module group of this utility model can conveniently and quickly control the on and off of the output, improve safety, greatly reduce the failure rate caused by human operation, and save the test personnel the labor of going back and forth between the cabinet room and the test room.

[0020] 3. The fuse terminal of this utility model is equipped with a fuse, which can automatically melt and break when the load is exceeded, thus improving safety.

[0021] 4. This utility model improves safety and reliability by setting an end plate to isolate different terminals.

[0022] 5. This utility model improves safety and reliability by setting adjacent jumpers to connect adjacent terminals together.

[0023] 6. This utility model can provide different output power supplies of 220V, 110V, 24V and 5V, and can provide multiple outputs under the same voltage, saving hardware costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the positioning plate structure of this utility model;

[0025] Figure 2 This is a practical drawing of the front baffle structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the rear baffle structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the side plate structure of this utility model;

[0028] Figure 5 This is a schematic diagram showing the connection between the 220V input and the terminal block unit of this utility model;

[0029] Figure 6 This is a schematic diagram showing the connection between the power conversion unit and the terminal block unit of this utility model;

[0030] Figure 7 This is a schematic diagram showing the connection between a set of 110V power conversion subunits and a plug assembly according to this utility model.

[0031] Figure 8 This is a schematic diagram showing the connection between another 110V power conversion subunit and the plug assembly of this utility model;

[0032] Figure 9 This is a schematic diagram showing the connection between the 24V power conversion subunit and the plug assembly of this utility model;

[0033] Figure 10 This is a schematic diagram showing the connection between the 5V power conversion subunit and the plug assembly of this utility model;

[0034] Figure 11 This is a schematic diagram of the DB9 female connector of this utility model.

[0035] 1. Terminal block; 2. End plate; 3. Wiring terminal; 4. Adjacent jumper; 5. Fuse terminal; 6. Circuit breaker; 7. 110V power conversion sub-unit; 8. 24V power conversion sub-module; 9. 5V power conversion sub-module; 10. Guide rail; 11. Positioning plate; 12. Light board; 13. Spare plate; 14. Power indicator light; 15. 110V output plug; 16. 24V output plug; 17. 5V output plug; 18. DB9 female connector; 19. 220V input plug; 20. 220V output plug; 21. Circuit breaker interface; 22. PLC module group; 23. Relay base group; 24. Heat dissipation holes. Detailed Implementation

[0036] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0037] Urban rail transit provides citizens with a convenient mode of transportation, and subways have become one of the preferred modes of transport. The signaling system is the control system for urban rail transit train operation, aiming to ensure the safety of passengers and equipment. Urban rail transit signaling control systems possess high safety and reliability, and a complete test of the signaling system is necessary before on-site trial operation and official passenger service. The test platform has both AC and DC power supplies. The AC power supply uses 220V, while the DC power supply uses various voltages such as 110V, 24V, and 5V, requiring multiple AC and DC power supplies; however, current systems suffer from issues of insufficient safety and complex structure.

[0038] This invention provides a multi-output power conversion box with safety protection. It has two circuit breakers, corresponding to a dual 220V input. One circuit breaker powers a 110V power conversion unit, while the other powers a 24V power conversion unit, a 5V power conversion unit, and a 220V output plug, dividing the load into two parts to ensure the safety and reliability of the output power. The PLC module group allows for convenient and quick control of the output switching, improving safety, significantly reducing the failure rate caused by human operation, and saving test personnel the labor of traveling back and forth between the cabinet room and the test room. The fuse terminal is equipped with a fuse that automatically blows when the load is exceeded, improving safety. The use of end plates to isolate different terminals further enhances safety and reliability. Adjacent terminals are connected together using jumpers, further improving safety and reliability. This invention can provide different output power supplies of 220V, 110V, 24V, and 5V, and can provide multiple outputs under the same voltage, saving hardware costs.

[0039] Example 1

[0040] A multi-output power conversion box with safety protection includes a cabinet and a positioning plate 11. The positioning plate 11 is located inside the cabinet. The power conversion box also includes a power conversion unit, a circuit breaker 6, a PLC module group 22, a relay group, a plug group, and a terminal block unit. The terminal block unit, the power conversion unit, and the circuit breaker 6 are fixed on the positioning plate 11. The terminal block unit includes an input terminal, a protection terminal, and an output terminal. The PLC module group 22, the relay group, and the plug group are located on the cabinet. The relay module group 22 is connected to the plug group and the relay group respectively. The circuit breaker 6, the input terminal of the terminal block unit, and the plug group are connected in sequence, or the circuit breaker 6, the input terminal of the terminal block unit, the power conversion unit, the protection terminal of the terminal block unit, the relay group, the output terminal of the terminal block unit, and the plug group are connected in sequence.

[0041] The power conversion unit includes a 110V power conversion subunit 7, a 24V power conversion subunit 8, and a 5V power conversion subunit 9.

[0042] The input terminal of the terminal block unit includes a 220V terminal block group, the output terminal of the terminal block unit includes a DC terminal block group, and the protection terminal of the terminal block unit includes a fuse terminal block group; the 220V terminal block group and the DC terminal block group include terminal blocks 3 arranged in sequence, and the fuse terminal block group includes fuse terminals 5 arranged in sequence, and the fuse terminal blocks 5 are provided with fuses.

[0043] The terminal block 3 includes a 110V terminal block, a 24V terminal block, a 5V terminal block, and a 220V terminal block; the DC terminal block group includes a 110V terminal block, a 24V terminal block, and a 5V terminal block arranged in sequence, and the 220V terminal block group includes a 220V terminal block arranged in sequence.

[0044] The terminal block unit also includes an end plate 2, and there is an end plate 2 between the 220V terminal block group, the DC terminal block group and the fuse terminal block group; two layers of end plates 2 are provided between the 110V terminal block and the 24V terminal block and between the 24V terminal block and the 5V terminal block.

[0045] End plate 2 is provided between the 110V terminals, between every two 24V terminals, between every two 5V terminals, and between every two 220V terminals.

[0046] The terminal block unit also includes an adjacent jumper 4, wherein each pair of 24V terminals is provided with an adjacent jumper 4, each pair of 5V terminals is provided with an adjacent jumper 4, and each pair of 220V terminals is provided with an adjacent jumper 4.

[0047] In this embodiment, as Figure 1 As shown, it includes 36 end plates 2, 44 terminals, 10 adjacent jumpers 4, 10 fuse terminals 5, 10 fuses, 4 110V power conversion sub-units 7, 1 24V power conversion sub-unit 8, and 1 5V power conversion sub-unit 9. The fuses at the fuse terminals 5 automatically blow when the load is exceeded, improving safety. The end plates 2 isolate different terminals, preventing interference between them and improving safety and reliability. The adjacent jumpers 4 connect adjacent terminals together, further enhancing safety and reliability.

[0048] like Figure 2 , Figure 3 As shown, the cabinet includes a front panel and a rear panel. The front panel includes a light panel 12 and a filler plate 13 arranged in sequence. The light panel 12 is equipped with a power indicator light 14. The plug assembly is located on the rear panel. The plug assembly includes a 110V output plug 15, a 24V output plug 16, a 5V output plug 17, a 220V output plug 20, a 220V input plug 19, and a DB9 female plug 18. The rear panel is provided with a circuit breaker interface 21.

[0049] In this embodiment, the lamp board 12 is a 2U lamp board, the filler plate 13 is a 4U filler plate, there are two 220V green power indicator lights 14, and screw holes that fix the lamp board 12 and the filler plate 13. The rear baffle is a 6U baffle, there are two circuit breakers 6, the 110V output plug 15 includes 20 two-pin aviation plugs for 110V output, the 24V output plug 16 includes 4 two-pin aviation plugs for 24V output, the 5V output plug 17 includes 4 two-pin aviation plugs for 5V output, the 220V input plug 19 includes 2 220V power input connectors, the 220V output plug 20 includes 2 220V power output connectors, and the DB9 female connector 18 includes 1 DB9 female connector. By setting output connectors with different voltages and different numbers of output connectors for the same voltage, multiple outputs are achieved. Circuit breaker interface 21 and circuit breaker 6 are set accordingly. The power conversion box is hollowed out on both the top and bottom. The PLC module group 22 is connected to the DB9 female connector 18.

[0050] like Figure 4 As shown, the cabinet also includes a side panel, which includes a relay base assembly 23. The PLC module assembly 22 and the relay base assembly 23 are fixed on the side panel, and the relay assembly is fixed on the relay base assembly 23. The side panel is provided with heat dissipation holes 24.

[0051] The positioning plate 11 and the side plate are both provided with terminal blocks 1 and guide rails 10. The rear baffle is provided with guide rails 10. The terminal block unit is fixed by the terminal blocks 1 and guide rails 10. The PLC module group 22 and the relay base group 23 are fixed by the terminal blocks 1 and guide rails 10. The circuit breaker interface 21 is fixed by the guide rails 10.

[0052] In this embodiment, the terminal block unit, PLC module group 22 and relay base group 23 are fixed by several terminal blocks 1 and guide rails, including 8 relays, 8 relay bases and 1 PLC module. Multiple heat dissipation holes 24 are provided on the side plate for heat dissipation.

[0053] Example 2

[0054] In this embodiment, the working principle of this utility model includes: to obtain a 220V output, the external 220V input is sequentially connected to the circuit breaker 6, the input terminal of the terminal block unit, and the plug assembly; to obtain a 110V, 24V, or 5V output, the external 220V input is sequentially connected to the circuit breaker 6, the input terminal of the terminal block unit, the power conversion unit, the protection terminal of the terminal block unit, the relay assembly, the output terminal of the terminal block unit, and the plug assembly. The voltage conversion unit is responsible for converting 220V to 110V, 24V, or 5V, and connects to the plug assembly through the terminal block unit. After the plug assembly is connected to an external load, the corresponding voltage output can be achieved.

[0055] The connection method for two external 220V inputs is as follows: Figure 5 As shown, 220V power input port 1 is connected to 220V terminal block via circuit breaker A, and 220V power input port 2 is connected to 220V terminal block via circuit breaker B.

[0056] Power indicator light A, 110V power conversion subunit End1, 110V power conversion subunit End2, 110V power conversion subunit End3, and 110V power conversion subunit End4 connect to the relevant ports of the 220V terminal block. Power indicator light B, 24V power conversion subunit End1, 5V power conversion subunit End1, 220V output port 1, 220V output port 2, and PLC module group connect to the relevant ports of the 220V terminal block. Figure 6 As shown.

[0057] The 110V power conversion subunit End1 is connected to the relay group via fuse terminal 5. The relay group is directly connected to the DC terminal block. Simultaneously, ports V3 to V6 of the 110V power conversion subunit End1 are directly connected to the relevant interfaces of the DC terminal block. The 110V power conversion subunit End2 is also connected to the relay group via fuse terminal 5. The relay group is directly connected to the DC terminal block. Ports V3 to V6 of the 110V power conversion subunit End2 are directly connected to the relevant interfaces of the DC terminal block. The DC terminal block is directly connected to 110V output ports 1, 2, 3, 4, 5, 6, 7, 8, and 18. Figure 7 As shown.

[0058] The 110V power conversion subunit End3 is connected to the relay group via fuse terminal 5. The relay group is directly connected to the DC terminal block. Simultaneously, ports V3 to V6 of the 110V power conversion subunit End3 are directly connected to the relevant interfaces of the DC terminal block. The 110V power supply End4 is also connected to the relay group via fuse terminal 5. The relay group is directly connected to the DC terminal block. Ports V3 to V6 of the 110V power conversion subunit End4 are directly connected to the relevant interfaces of the DC terminal block. The DC terminal block is directly connected to 110V output ports 9, 10, 11, 12, 19, 13, 14, 15, 16, and 20. Figure 8 As shown.

[0059] The V1 port of the 24V power conversion subunit End1 is connected to ports Y0 to Y7 of the PLC module group via the relevant ports of the relay group. The V2 and V4 ports of the 24V power conversion subunit End1 are directly connected to the relevant ports of the PLC module group. The V3 port of the 24V power conversion subunit End1 is directly connected to port 25-A of the DC terminal block via the relevant port of fuse terminal 5. The V5 port of the 24V power conversion subunit is directly connected to port 27-A of the DC terminal block. The relevant ports of the DC terminal block are directly connected to 24V output ports 1, 24V output ports 2, 24V output ports 3, and 24V output ports 4. Figure 9 As shown.

[0060] The V1 port of the 5V power conversion subunit End1 is directly connected to port 29-A of the DC terminal block via the relevant port of fuse terminal 5. The V3 port of the 5V power supply End1 is directly connected to port 31-A of the DC terminal block. The relevant ports of the DC terminal block are directly connected to 5V output ports 1, 2, 3, and 4. Figure 10 As shown.

[0061] Connect port 2 of the DB9 female connector of the PLC module group to port 3 of the PLC serial output port DB9 female connector 18 in the power supply box; connect port 3 of the DB9 female connector of the PLC module group to port 2 of the PLC serial output port DB9 female connector 18 in the power supply box; and connect port 5 of the DB9 female connector of the PLC module group to port 5 of the PLC serial output port DB9 female connector 18 in the power supply box. Figure 11 As shown.

[0062] All cables marked with an '&' symbol have a wire diameter of 1.0mm. 2 Low-smoke halogen-free flame-retardant power cords, with "+" marked in red and "-" marked in black.

[0063] The above description is merely a specific practical embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A multi-output power conversion box with safety protection, comprising a cabinet, a positioning plate (11), and dual 220V inputs, wherein the positioning plate (11) is located inside the cabinet, characterized in that, The power conversion box also includes a power conversion unit, a circuit breaker (6), a PLC module group (22), a relay group, a plug group, and a terminal block unit. The dual 220V inputs are respectively connected to the circuit breaker (6). The terminal block unit, the power conversion unit, and the circuit breaker (6) are fixed on the positioning plate (11). The terminal block unit includes an input terminal, a protection terminal, and an output terminal. The PLC module group (22), the relay group, and the plug group are located on the cabinet. The PLC module group (22) is respectively connected to the plug group and the relay group. The circuit breaker (6), the input terminal of the terminal block unit, and the plug group are connected in sequence, or the circuit breaker (6), the input terminal of the terminal block unit, the power conversion unit, the protection terminal of the terminal block unit, the relay group, the output terminal of the terminal block unit, and the plug group are connected in sequence. The power conversion unit includes a 110V power conversion subunit (7), a 24V power conversion subunit (8), and a 5V power conversion subunit (9). The input terminal of the terminal block unit includes a 220V terminal block group, the output terminal of the terminal block unit includes a DC terminal block group, and the protection terminal of the terminal block unit includes a fuse terminal block group; both the 220V terminal block group and the DC terminal block group include multiple terminals (3) arranged in sequence, and the fuse terminal block group includes multiple fuse terminals (5) arranged in sequence, and the fuse terminal (5) is provided with a fuse; The terminal block (3) includes a 110V terminal block, a 24V terminal block, a 5V terminal block, and a 220V terminal block; the DC terminal block group includes a 110V terminal block, a 24V terminal block, and a 5V terminal block arranged in sequence, and the 220V terminal block group includes a 220V terminal block arranged in sequence.

2. The multi-output power converter box with safety protection according to claim 1, characterized in that, The terminal block unit also includes an end plate (2), and there is an end plate (2) between the 220V terminal block group, the DC terminal block group and the fuse terminal block group; there are two layers of end plates (2) between the 110V terminal block and the 24V terminal block, and there are two layers of end plates (2) between the 24V terminal block and the 5V terminal block.

3. A multi-output power converter box with safety protection according to claim 2, characterized in that, An end plate (2) is provided between the 110V terminals, an end plate (2) is provided between every two 24V terminals, an end plate (2) is provided between every two 5V terminals, and an end plate (2) is provided between every two 220V terminals.

4. A multi-output power converter box with safety protection according to claim 3, characterized in that, The terminal block unit also includes adjacent jumpers (4), with adjacent jumpers (4) provided for every two 24V terminals, adjacent jumpers (4) provided for every two 5V terminals, and adjacent jumpers (4) provided for every two 220V terminals.

5. A multi-output power converter box with safety protection according to claim 1, characterized in that, The cabinet includes a front panel and a rear panel. The front panel includes a light panel (12) and a filler plate (13) arranged in sequence. The light panel (12) is equipped with a power indicator light (14). The plug group is located on the rear panel. The plug group includes a 110V output plug (15), a 24V output plug (16), a 5V output plug (17), a 220V output plug (20), a 220V input plug (19), and a DB9 female plug (18). The rear panel is equipped with a circuit breaker interface (21).

6. A multi-output power converter box with safety protection according to claim 5, characterized in that, The cabinet also includes a side panel, which includes a relay base assembly (23). The PLC module assembly (22) and the relay base assembly (23) are fixed on the side panel, and the relay assembly is fixed on the relay base assembly (23). The side panel is provided with heat dissipation holes (24).

7. A multi-output power converter box with safety protection according to claim 6, characterized in that, The positioning plate (11) and the side plate are provided with terminal blocks (1) and guide rails (10). The rear baffle is provided with guide rails (10). The terminal block unit is fixed by the terminal blocks (1) and guide rails (10). The PLC module group (22) and the relay base group (23) are fixed by the terminal blocks (1) and guide rails (10). The circuit breaker interface (21) is fixed by the guide rails (10).

Images