A switching device and switching method for assisting UPS offline

Abstract

The present invention belongs to the technical field of UPS equipment, and specifically is a switching device and a switching method for assisting UPS offline, comprising the following steps: S1: main line operation: UPS inputs AC380V alternating current power supply, and outputs AC220V alternating current through internal rectification and inversion, and sends it to power-consuming equipment through Q004 UPS output switch, Q005 feeder output main switch, and Q007 high-speed dual power conversion switch controller; S2: battery power supply: when the UPS input AC380V alternating current power supply fails, the battery provides UPS direct current through QF3, and the UPS internal inversion converts it into AC220V alternating current; by adding a bypass power distribution cabinet, the switching demand when the UPS main cabinet needs to be offline for maintenance can be effectively solved, and the load power supply is guaranteed to be uninterrupted; by using the high-speed dual power conversion switch controller, two sets of UPS can be used as backup for each other, which effectively solves the problem of uninterrupted transfer of load power supply to another UPS when any set of UPS fails, and the switching is fully automated to further increase the power supply reliability.

Description

Technical Field

[0001] The invention belongs to the technical field of UPS equipment, in particular to a switching device and a switching method for assisting UPS offline. Background Art

[0002] The UPS power supply system is mainly composed of rectifiers, batteries, inverters, and conversion switches. On the one hand, the rectifier converts AC power into DC output, and on the other hand, the rectified DC output provides charging voltage for the battery. When the mains power is cut off, the battery can still be used as an energy source for the UPS power supply system to continue to supply power. Its capacity determines the time the UPS power supply system can continue to supply power after the mains power is cut off.

[0003] The traditional UPS host cabinet itself contains main input, bypass input, main output and battery power supply switch. Only one UPS host cabinet is needed to meet the application scenario of uninterrupted AC power output. However, the disadvantage of such use is that when the UPS fails and must be disassembled for maintenance or the whole machine must be taken offline for maintenance, bypass power supply must be used to ensure uninterrupted load power supply. At this time, since the bypass is energized, it cannot be disassembled or taken offline, or there is a risk of electric shock when disassembling. Therefore, in order to solve the above problem, a switching device and a switching method for assisting UPS offline are proposed. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background art, the present invention provides a switching device and a switching method for assisting UPS offline.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a switching method for assisting UPS offline described in the present invention, a switching method for assisting UPS offline, comprises the following steps:

[0006] S1: Main circuit operation: UPS inputs AC380V AC power, and outputs AC220V AC power through internal rectification and inversion, which is sent to the power-consuming equipment through Q004 UPS output switch, Q005 feeder output main switch, and Q007 high-speed dual power conversion switch controller;

[0007] S2: Battery power supply: When the UPS input AC380V AC power fails, the battery provides UPS DC power through QF3, and the UPS internal inverter converts it into AC220V AC power, which is sent to the power-consuming equipment through Q004 UPS output switch, Q005 feeder output main switch, and Q007 high-speed dual power conversion switch controller;

[0008] S3: Static bypass power supply: When the UPS input AC380V AC power supply fails and the battery power is exhausted, the bypass power supply Q002 is used to supply power. The static switch inside the UPS is closed and the power is still supplied to the power-consuming equipment through the Q004 UPS output switch, Q005 feeder output main switch, and Q007 high-speed dual power conversion switch controller;

[0009] S4: Maintenance bypass power supply: When the UPS needs maintenance or offline maintenance, the power is sent to the power-consuming equipment through the bypass feeder cabinet Q003, Q004 UPS output switch, Q005 feeder output master switch, and Q007 high-speed dual power conversion switch controller. The switching operation ensures that the load power supply is not interrupted, and the UPS host can be safely cut out;

[0010] The outputs of 1#UPS and 2#UPS are connected to high-speed dual power supplies respectively. When the power supply of any UPS is interrupted or cannot be switched to bypass power supply, uninterrupted switching can be achieved within 5ms, thereby achieving uninterrupted power supply to the load.

[0011] A switching device for assisting UPS offline, the switching method is applicable to the above-mentioned switching method for assisting UPS offline: wherein the bypass feeder cabinet Q003 in S1 includes a feeder cabinet body; two sliding rods are installed in the feeder cabinet body; a slider is slidably connected to the sliding rods; the same mounting frame is installed on the two sliders; a plurality of mounting holes are opened on the mounting frame; an adjustment component is installed on one of the sliders; the adjustment component includes a mounting box and a first servo motor; the first servo motor is installed in the mounting box.

[0012] Preferably, a worm is mounted on the output shaft of the first servo motor; one side of the worm is meshingly connected with a worm wheel; a threaded rod is mounted on the worm wheel; and the slider is threadedly connected to the threaded rod.

[0013] Preferably, a support base is connected to the bottom of the feeder cabinet body; two square support columns are installed at the bottom of the feeder cabinet; two plug-in slots are provided on the square support columns; a mounting plate is installed at the bottom of the square support columns; and a fixing component is installed in the support base.

[0014] Preferably, a second servo motor is installed in the support seat; a gear one is installed on the output shaft of the second servo motor; the fixing assembly includes a screw rod; both ends of the screw rod are rotatably connected in the support seat; a gear two is installed on the screw rod; the gear two and the gear one are meshed and connected with each other; two driving connecting rods are threadedly connected to the screw rod; one end of the driving connecting rod is connected to a clamping rod; two plug-in fixing rods are installed on the clamping plate; the plug-in fixing rods are plugged in the plug-in slots; a clamping slot is provided on the clamping plate; one end of the mounting plate is clamped in the clamping slot.

[0015] Preferably, two connection blocks are installed on the support seat; positioning grooves are provided on the connection blocks; two positioning blocks are installed on the bottom of the feeder cabinet body; and the positioning blocks are snap-fitted into the positioning grooves.

[0016] Preferably, fixing plates are installed on both sides of the support seat; and a plurality of fixing grooves are formed on the fixing plates.

[0017] Preferably, cooling fans are installed on both sides of the feeder cabinet body; a dust cover is installed on the cooling fan; and a cabinet door is installed on the feeder cabinet body.

[0018] Beneficial effects of the present invention:

[0019] The present invention provides a switching device and a switching method for assisting UPS offline, which can effectively solve the switching demand when the UPS host cabinet needs to be offline for maintenance by adding a bypass distribution cabinet, while ensuring that the load power supply is not interrupted.

[0020] The present invention provides a switching device and a switching method for assisting UPS offline. By using a high-speed dual power conversion switch controller, two UPS sets can serve as backup for each other, effectively solving the problem of uninterrupted transfer of load power supply to another UPS when any UPS set fails. At the same time, the switching is fully automated, which can further increase the power supply reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 It is the electrical principle diagram of the auxiliary switching UPS offline of the present invention;

[0023] Figure 2 It is a three-dimensional diagram of the feeder cabinet body in the present invention;

[0024] Figure 3 is a three-dimensional diagram of the cross section of the feeder cabinet body in the present invention;

[0025] Figure 4 is a three-dimensional diagram of the sliding rod in the present invention;

[0026] Figure 5 The present invention Figure 4 A is an enlarged stereogram;

[0027] Figure 6 is a three-dimensional diagram of a cross section of a support seat in the present invention;

[0028] Figure 7 is a three-dimensional diagram of the support seat in the present invention;

[0029] Figure 8 It is a three-dimensional diagram of the square support column and the plug-in fixing rod in the present invention being separated.

[0030] Legend:

[0031] 1. Feeder cabinet body; 2. Sliding rod; 3. Sliding block; 4. Mounting frame; 51. Mounting box; 52. First servo motor; 53. Worm; 54. Worm wheel; 55. Threaded rod; 6. Square support column; 71. Screw; 72. Gear 2; 73. Driving connecting rod; 74. Plug-in fixing rod; 75. Snap-in plate; 76. Slot; 8. Second servo motor; 9. Gear 1; 10. Mounting plate; 12. Plug-in slot; 13. Connecting block; 14. Positioning slot; 15. Positioning block; 16. Support seat; 17. Mounting hole; 18. Cooling fan; 19. Dust cover; 20. Fixing plate; 21. Fixing slot; 22. Box door. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Specific examples are given below.

[0034] See also Figure 1 The present invention provides a switching device and a switching method for assisting UPS offline, and a switching method for assisting UPS offline, comprising the following steps:

[0035] S1: Main circuit operation: UPS inputs AC380V AC power, and outputs AC220V AC power through internal rectification and inversion, which is sent to the power-consuming equipment through Q004 UPS output switch, Q005 feeder output main switch, and Q007 high-speed dual power conversion switch controller;

[0036] S2: Battery power supply: When the UPS input AC380V AC power fails, the battery provides UPS DC power through QF3, and the UPS internal inverter converts it into AC220V AC power, which is sent to the power-consuming equipment through Q004 UPS output switch, Q005 feeder output main switch, and Q007 high-speed dual power conversion switch controller;

[0037] S3: Static bypass power supply: When the UPS input AC380V AC power supply fails and the battery power is exhausted, the bypass power supply Q002 is used to supply power. The static switch inside the UPS is closed and the power is still supplied to the power-consuming equipment through the Q004 UPS output switch, Q005 feeder output main switch, and Q007 high-speed dual power conversion switch controller;

[0038] S4: Maintenance bypass power supply: When the UPS needs maintenance or offline maintenance, the power is sent to the power-consuming equipment through the bypass feeder cabinet Q003, Q004 UPS output switch, Q005 feeder output master switch, and Q007 high-speed dual power conversion switch controller. The switching operation ensures that the load power supply is not interrupted, and the UPS host can be safely cut out;

[0039] 1#UPS and 2#UPS outputs are connected to high-speed dual power supplies respectively. When any UPS power supply is interrupted or cannot be switched to bypass power supply, uninterrupted switching can be achieved within 5ms, so as to achieve uninterrupted power supply to the load;

[0040] When working, the power supply must be transferred to the maintenance bypass power supply. During normal operation, the Q002 bypass output to the UPS bypass switch and the Q004 UPS output switch are in the closed state. First, operate the UPS host cabinet to transfer the load power supply to the UPS static bypass power supply. At this time, close the Q003 maintenance bypass switch, and then disconnect the Q004 UPS output switch, disconnect the Q002 bypass output to the UPS bypass switch, and the main input and battery switch of the UPS host cabinet. At this time, the UPS host is cut out to achieve the purpose of offline maintenance; high-speed dual power conversion switch controller: the two sets of UPS outputs are respectively connected to the two incoming line access ports of the high-speed dual power conversion switch controller, and the high-speed dual power conversion switch controller output is directly sent to the power load. When any of the UPS power supply is interrupted or cannot be switched to the bypass power supply, uninterrupted switching can be achieved within 5ms, so as to achieve uninterrupted load power supply.

[0041] like Figure 1-8As shown, a switching device for assisting UPS offline is applicable to the switching method for assisting UPS offline proposed above, wherein the bypass feeder cabinet Q003 in S1 includes a feeder cabinet body 1; two sliding rods 2 are installed in the feeder cabinet body 1; a slider 3 is slidably connected to the sliding rod 2; the same mounting frame 4 is installed on the two sliders 3; a plurality of mounting holes 17 are opened on the mounting frame 4; an adjustment component is installed on one of the sliders 3; the adjustment component includes an installation box 51 and a first servo motor 52; the first servo motor 52 is installed in the installation box 51; a worm 53 is installed on the output shaft of the first servo motor 52; a worm wheel 54 is meshedly connected to one side of the worm 53; a threaded rod 55 is installed on the worm wheel 54; the slider 3 is threadedly connected to the threaded rod 55;

[0042] During operation, the first servo motor 52 drives the worm 53 to rotate, and the worm 53 rotates on the installation box 51, and then the worm 53 drives the worm wheel 54 to rotate, and the worm wheel 54 drives the threaded rod 55 connected thereto to rotate, and then the threaded rod 55 drives the slider 3 threadedly connected thereto to move on the sliding rod 2, and then drives the mounting frame 4 to move, and the two sliders 3 rotate on the sliding rod 2, and drive the mounting frame 4 to horizontally adjust the installation position in the feeder cabinet body 1, making the installation more convenient, and the mounting hole 17 is convenient for installing an external relay or a mounting rod; the first servo motor 52 drives the worm 53 to rotate, and then drives the worm wheel 54 and the threaded rod 55 to rotate, so as to realize the precise movement of the slider 3 on the sliding rod 2, and allow the mounting frame 4 to be horizontally adjusted in the feeder cabinet body 1, without manual movement or reinstallation, which greatly improves the flexibility and convenience of installation; since the position of the mounting frame 4 can be easily adjusted, the staff can quickly find the most suitable installation point, thereby saving a lot of time and energy.

[0043] like Figure 2 , 6 As shown in Figure 8, a support base 16 is connected to the bottom of the feeder cabinet body 1; two square support columns 6 are installed at the bottom of the feeder cabinet; two plug-in slots 12 are provided on the square support columns 6; a mounting plate 10 is installed at the bottom of the square support columns 6; a fixing component is installed in the support base 16; during operation, when the feeder cabinet body 1 is pre-installed, the feeder cabinet body is placed in a predetermined position, and the square support columns 6 and the mounting plate 10 at the bottom will firmly support the feeder cabinet body 1.

[0044] like Figure 6-8As shown, a second servo motor 8 is installed in the support seat 16; a gear 9 is installed on the output shaft of the second servo motor 8; the fixing assembly includes a screw rod 71; both ends of the screw rod 71 are rotatably connected in the support seat 16; a gear 2 72 is installed on the screw rod 71; the gear 2 72 is meshed with the gear 1 9; two drive connecting rods 73 are threadedly connected to the screw rod 71; one end of the drive connecting rod 73 is connected to a clamping rod; two plug-in fixing rods 74 are installed on the clamping plate 75; the plug-in fixing rod 74 is plugged into the plug-in slot 12; a clamping slot 76 is provided on the clamping plate 75; one end of the mounting plate 10 is clamped in the clamping slot 76, and the plug-in slot 12 and the plug-in fixing rod 74 are arranged in an I-shape. The I-shaped plug-in slot 12 and the plug-in fixing rod 74 increase the stability and firmness of the connection. When working, the bottom of the feeder cabinet body 1 The square support column 6 and the mounting plate 10 are placed in the support seat 16, and then the second servo motor 8 drives the gear 1 9 to rotate, and the gear 1 9 drives the gear 2 72 to rotate, so that the gear 2 72 drives the screw rod 71 connected thereto to rotate, and the screw rod 71 drives the driving connecting rod 73 threadedly connected thereto to move, and then drives the connecting rod 73 to drive the connected clamping plate 75 and the plug-in fixing rod 74 to move toward one side of the square support column 6, so that the two plug-in fixing rods 74 are inserted into the plug-in slots 12 on the square support column 6, and the clamping slots 76 on the clamping plate 75 are clamped with one side of the mounting plate 10, thereby completing the installation of the feeder cabinet body 1. When disassembling, as described above, it is convenient for users to disassemble and assemble the feeder cabinet body 1; through the drive of the second servo motor 8, the user only needs to control the start and stop of the motor to realize the rapid installation and disassembly of the feeder cabinet body 1, which greatly simplifies the operation process and reduces the manpower demand.

[0045] like Figure 3 , 7 As shown, two connecting blocks 13 are installed on the support seat 16; a positioning groove 14 is opened on the connecting block 13; two positioning blocks 15 are installed at the bottom of the feeder cabinet body 1; the positioning block 15 is snapped into the positioning groove 14; when working, the feeder cabinet body 1 is placed on the support seat 16, and when placing, the positioning block 15 at the bottom of the feeder cabinet is inserted into the positioning groove 14 on the connecting block 13 in the support seat 16, so as to facilitate the fixing assembly to fix the feeder cabinet body 1; through the positioning block 15 and the positioning groove 14, the feeder cabinet body 1 can be quickly and accurately placed on the support seat 16, thereby simplifying the installation process and improving work efficiency.

[0046] like Figure 2As shown, fixing plates 20 are installed on both sides of the support seat 16; a plurality of fixing grooves 21 are opened on the fixing plate 20; cooling fans 18 are installed on both sides of the feeder cabinet body 1; a dust cover 19 is installed on the cooling fan 18; a box door 22 is installed on the feeder cabinet body 1; when working, the support seat 16 can be fixed by installing the external fixing bolts in the installation grooves on the fixing plate 20, and the box door 22 facilitates the installation of electrical equipment in the feeder cabinet body 1, and the cooling fans 18 installed on both sides of the feeder cabinet body 1 help to reduce the temperature in the cabinet and reduce damage to electrical equipment due to overheating. The dust cover 19 installed on the cooling fan 18 can effectively reduce the dust and debris from entering the feeder cabinet.

[0047] Working principle: When working, the power supply must be transferred to the maintenance bypass power supply. During normal operation, the Q002 bypass output to the UPS bypass switch and the Q004 UPS output switch are in the closed state. First, operate the UPS host cabinet to transfer the load power supply to the UPS static bypass power supply. At this time, close the Q003 maintenance bypass switch, and then disconnect the Q004 UPS output switch, disconnect the Q002 bypass output to the UPS bypass switch, and the main input and battery switch of the UPS host cabinet. At this time, the UPS host is cut out to achieve the purpose of offline maintenance; high-speed dual power conversion switch controller: the two sets of UPS outputs are respectively connected to the two incoming line access ports of the high-speed dual power conversion switch controller, and the output line of the high-speed dual power conversion switch controller is directly sent to the power load. When any set of UPS power supply is interrupted or cannot be switched to bypass power supply, uninterrupted switching can be achieved within 5ms, so as to achieve uninterrupted load power supply.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A method for assisting UPS offline switching, characterized in that: A method for assisting UPS offline switching comprises the following steps: S1: Main circuit operation: UPS inputs AC380V AC power, and outputs AC220V AC power through internal rectification and inversion, which is sent to the power-consuming equipment through Q004 UPS output switch, Q005 feeder output main switch, and Q007 high-speed dual power conversion switch controller; S2: Battery power supply: When the UPS input AC380V AC power fails, the battery provides UPS DC power through QF3, and the UPS internal inverter converts it into AC220V AC power, which is sent to the power-consuming equipment through Q004 UPS output switch, Q005 feeder output main switch, and Q007 high-speed dual power conversion switch controller; S3: Static bypass power supply: When the UPS input AC380V AC power supply fails and the battery power is exhausted, the bypass power supply Q002 is used to supply power. The static switch inside the UPS is closed and the power is still supplied to the power-consuming equipment through the Q004 UPS output switch, Q005 feeder output main switch, and Q007 high-speed dual power conversion switch controller; S4: Maintenance bypass power supply: When the UPS needs maintenance or offline maintenance, the power is sent to the power-consuming equipment through the bypass feeder cabinet Q003, Q004 UPS output switch, Q005 feeder output master switch, and Q007 high-speed dual power conversion switch controller. The switching operation ensures that the load power supply is not interrupted, and the UPS host can be safely cut out; The outputs of 1#UPS and 2#UPS are connected to high-speed dual power supplies respectively. When the power supply of any UPS is interrupted or cannot be switched to bypass power supply, uninterrupted switching can be achieved within 5ms, thereby achieving uninterrupted power supply to the load.

2. A switching device for assisting UPS offline, characterized in that: The switching device is applicable to a switching method for assisting UPS offline as described in claim 1, wherein the bypass feeder cabinet Q003 in S1 comprises a feeder cabinet body (1); two sliding rods (2) are installed in the feeder cabinet body (1); a slider (3) is slidably connected to the sliding rod (2); the same mounting frame (4) is installed on the two sliders (3); a plurality of mounting holes (17) are opened on the mounting frame (4); an adjustment component is installed on one of the sliders (3); the adjustment component comprises a mounting box (51) and a first servo motor (52); the first servo motor (52) is installed in the mounting box (51).

3. The switching device for assisting UPS offline according to claim 2, characterized in that: A worm (53) is mounted on the output shaft of the first servo motor (52); one side of the worm (53) is meshingly connected with a worm wheel (54); a threaded rod (55) is mounted on the worm wheel (54); and the slider (3) is threadedly connected to the threaded rod (55).

4. The switching device for assisting UPS offline according to claim 2, characterized in that: The bottom of the feeder cabinet body (1) is connected to a support base (16); two square support columns (6) are installed at the bottom of the feeder cabinet; two plug-in slots (12) are provided on the square support columns (6); a mounting plate (10) is installed at the bottom of the square support columns (6); and a fixing component is installed in the support base (16).

5. The switching device for assisting UPS offline according to claim 4, characterized in that: A second servo motor (8) is installed in the support seat (16); a gear one (9) is installed on the output shaft of the second servo motor (8); the fixing assembly comprises a screw rod (71); both ends of the screw rod (71) are rotatably connected in the support seat (16); a gear two (72) is installed on the screw rod (71); the gear two (72) and the gear one (9) are meshed and connected with each other; two driving connecting rods (73) are threadedly connected to the screw rod (71); one end of the driving connecting rod (73) is connected to a clamping rod; two plug-in fixing rods (74) are installed on the clamping plate (75); the plug-in fixing rods (74) are plugged into the plug-in slot (12); a clamping slot (76) is provided on the clamping plate (75); one end of the mounting plate (10) is clamped into the clamping slot (76).

6. The switching device for assisting UPS offline according to claim 4, characterized in that: Two connection blocks (13) are installed on the support seat (16); a positioning groove (14) is provided on the connection block (13); two positioning blocks (15) are installed on the bottom of the feeder cabinet body (1); the positioning blocks (15) are snap-fitted into the positioning groove (14).

7. The switching device for assisting UPS offline according to claim 4, characterized in that: Fixing plates (20) are installed on both sides of the support seat (16); and a plurality of fixing grooves (21) are provided on the fixing plate (20).

8. The switching device for assisting UPS offline according to claim 2, characterized in that: Cooling fans (18) are installed on both sides of the feeder cabinet body (1); a dust cover (19) is installed on the cooling fan (18); and a cabinet door (22) is installed on the feeder cabinet body (1).

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