A distribution box for uninterruptible power supply

Abstract

The utility model relates to a distribution box for an uninterruptible power supply, comprising a box body and an uninterruptible power supply system arranged in the box body, wherein the uninterruptible power supply system comprises: a main power supply circuit, a city power bypass, a maintenance bypass, a load circuit and a monitoring circuit, wherein the monitoring circuit comprises a city power failure sensor, a UPS output power failure sensor, a load power failure sensor, a dual power supply conversion switch, a communication cloud box and an audible and visual alarm prompting device, wherein the communication cloud box receives switching signals output by the city power failure sensor, the UPS output power failure sensor and the load power failure sensor as well as the dual power supply conversion switch, and controls the audible and visual alarm prompting device.

Description

Technical Field

[0001] The utility model relates to the technical field of uninterruptible power supply, in particular to a distribution box used for uninterruptible power supply. Background Art

[0002] Uninterruptible power supply (UPS) is a system device that connects a battery to a host and converts direct current into mains power through circuits such as the host inverter. It is mainly used to provide uninterrupted power supply to computers, computer network systems or other power electronic equipment. In the process of using uninterruptible power supply equipment, due to the lack of monitoring of the operating status of the uninterruptible power supply, when the mains input is abnormal, the uninterruptible power supply equipment also becomes abnormal at the same time, causing the power electronic equipment to fail to operate normally, resulting in serious consequences.

[0003] Therefore, when the UPS fails and cannot supply power, it is particularly important to quickly restore the mains power to the load through the bypass. Traditional manual maintenance bypass requires professional personnel to go to the site to manually operate to complete the bypass conversion. The response speed is slow and the power supply cannot be restored quickly. This may cause irreparable losses for some industries (such as medical). Utility Model Content

[0004] In view of this, it is necessary to provide a distribution box for uninterruptible power supply that can respond in time, recover quickly, and be safe and reliable.

[0005] A distribution box for an uninterruptible power supply comprises a box body, wherein the distribution box is provided with a main power supply circuit, a city power bypass, a maintenance bypass, a load circuit and a monitoring circuit, wherein an input switch, a UPS host and an output switch are sequentially connected in series on the main power supply circuit, the city power bypass is connected in parallel to the input end of the input switch and the input end of the output switch, the maintenance bypass is connected in parallel to the input end of the input switch and the output end of the output switch, a maintenance bypass switch is arranged on the maintenance bypass, the load circuit is connected to the output end of the output switch, the monitoring circuit comprises a city power failure sensor, a UPS output power failure sensor, a load power failure sensor, a dual power supply conversion switch, a communication cloud box and an audible and visual alarm prompting device, the input end of the city power failure sensor is connected to the input end of the input switch, the dual power supply conversion switch is connected to the U Between the output end of the PS host and the input end of the output switch, the respective power output ends (COM) of the AC power off sensor, UPS output power off sensor, and load power off sensor are all connected to the input end of the dual power conversion switch, and the respective switch signal output ends (NO) of the AC power off sensor, UPS output power off sensor, load power off sensor, and dual power conversion switch are respectively connected to the corresponding switch signal input ends (IN1~IN4) of the communication cloud box. The sound and light alarm prompt device is connected between the output end of the communication cloud box and the DC power supply interface, and is used to receive the switch signal output from the output end of the communication cloud box. The switch signal comes from the AC power off sensor, UPS output power off sensor, load power off sensor, and dual power conversion switch.

[0006] Furthermore, a UPS output power failure sensor is connected to a main power supply circuit between an output terminal of the UPS and an input terminal of the dual power conversion switch.

[0007] Furthermore, the maintenance bypass switch is also connected to a padlock device.

[0008] Furthermore, the power output terminals (COM) of the AC power failure sensor, the UPS output power failure sensor, and the load power failure sensor are all connected to the ground terminal (GND) of the communication cloud box.

[0009] Furthermore, the communication cloud box also includes a power output terminal and a switch output terminal, and the voltage output terminal and the switch output terminal are connected to the sound and light alarm indicating device.

[0010] Furthermore, the communication cloud box also includes an antenna for communicating with the server, a power switch and a built-in battery.

[0011] Furthermore, the UPS host is arranged in the box.

[0012] The distribution box for uninterruptible power supply of the present invention can monitor the power status of the main power supply circuit, the mains bypass and the load circuit in real time through various power-off sensors, realizes automatic conversion between the main power supply circuit and the mains bypass through the dual power supply conversion switch, and can report the power status of the main power supply circuit and the mains circuit in real time. The communication cloud box collects the switching signals of various power-off sensors and the dual power supply conversion switch and issues corresponding early warning notifications, thereby improving the degree of automation of the distribution box for uninterruptible power supply of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic structural diagram of a distribution box for an uninterruptible power supply according to an embodiment of the utility model.

[0014] Figure 2 yes Figure 1 A circuit connection diagram of the power failure sensors, communication cloud box and sound and light alarm circuits of the uninterruptible power supply system.

[0015] Figure 3 It is a structural schematic diagram of a distribution box for an uninterruptible power supply according to another embodiment of the utility model. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1 , which is a distribution box 100 for uninterruptible power supply in one embodiment of the utility model, including a box body 10 and an uninterruptible power supply system 20 arranged in the box body 10. The uninterruptible power supply system 20 includes: a main power supply circuit 22, a city power bypass 24, a maintenance bypass 26, a load circuit 28 and a monitoring circuit 30.

[0018] The main power supply circuit 22 is connected in series with an input switch 220, a UPS host 222, and an output switch 224 in sequence. The AC bypass 24 is connected in parallel to the input end of the input switch 220 of the main power supply circuit 22 and the input end of the output switch 224. The maintenance bypass 26 is connected in parallel to the input end of the input switch 220 of the main power supply circuit 22 and the output end of the output switch 224. The maintenance bypass 26 is provided with a maintenance bypass switch 260 and a padlock device 262 connected to the maintenance bypass switch 260. The load circuit 28 is connected to the output end of the output switch 224 of the main power supply circuit 22. It can be understood that the UPS host of the embodiment of the utility model can be connected to the outside of the box 10 of the distribution box 100 (such as a power distribution box 100) through a cable. Figure 1 As shown), it can also be arranged in the box body 10 of the distribution box 100 (as shown Figure 3 as shown).

[0019] The monitoring circuit 30 includes an electrically connected mains power failure sensor 302 , a UPS output power failure sensor 304 , a load power failure sensor 306 , a dual power supply conversion switch 308 , a communication cloud box 310 , and an audible and visual alarm prompt device 312 .

[0020] The input end (A, B, C, N) of the mains power failure sensor 302 is connected to the input end of the input switch 220, the output end (COM, NO) of the mains power failure sensor 302 is respectively connected to the input end (F21) of the dual power conversion switch 308 and the input end (IN1) of the communication cloud box 310, the output end (COM, NO) of the UPS output power failure sensor 304 is respectively connected to the input end (F21) of the dual power conversion switch 308 and the input end (IN2) of the communication cloud box 310, the output end (COM, NO) of the load power failure sensor 306 is respectively connected to the input end (F21) of the dual power conversion switch 308 and the input end (IN3) of the communication cloud box 310, the output end (F24) of the dual power conversion switch 308 is connected to the input end (IN4) of the communication cloud box 310, the sound and light alarm prompt device is connected between the output end (OUT COM, OUTNO) of the communication cloud box 310 and the DC power interface (DC5~23V), and receives the output end (OUT The communication cloud box 310 is provided with a switch quantity signal output by the mains power failure sensor 302, the UPS output power failure sensor 304, the load power failure sensor 306 and the switch quantity signal output by the dual power conversion switch 308. The communication cloud box 310 is also provided with an antenna (NET) and a built-in battery (BAT). Under normal circumstances, the communication cloud box 310 and the sound and light alarm device 312 can be powered by a DC5~23V DC power supply. If a power failure occurs, the communication cloud box 310 switches to the built-in battery for power supply, and continues to power the sound and light alarm device 312 through the output port OUT1COM.

[0021] In this embodiment, the mains power failure sensor 302, the UPS output power failure sensor 304, and the load power failure sensor 306 can collect the on / off status of a single / three-phase power supply, that is, the power supply status of the corresponding circuit is collected at the aforementioned connection position. When the power supply status is abnormal, the corresponding power failure sensor will output the corresponding switch signal. After collecting these switch signals, the communication cloud box 310 sends a switch signal to the sound and light alarm indicator device 312 to control the light to be always on and the buzzer to sound. If the data returns to normal, the sound and light alarm will be automatically turned off. The communication cloud box 310 can also upload the data to the server for analysis through the network. When the server finds data abnormalities during the data analysis process, it will immediately send a notification (message, email, phone call, etc.) and issue a corresponding early warning notification to achieve more accurate and intelligent control.

[0022] The dual power conversion switch 308 can select one power output from the main power supply circuit 22 and the mains bypass 24. When the dual power conversion switch 308 is working, it will monitor the power status of the main power supply circuit 22 and the mains bypass 24 in real time. When the dual power conversion switch 308 performs the power conversion operation, it will output a switch signal to the communication cloud box 310, and the communication cloud box 310 obtains the status of the dual power conversion switch 308 by collecting these switch signals.

[0023] When the UPS host 222 outputs no power and the mains power is normal, the input switch 220 is in a closed state, the output switch 224 is in a closed state, the maintenance bypass switch 260 is in an open state, and the dual power conversion switch 308 detects that the main power supply circuit 22 is powered off and automatically switches to the mains bypass 24 for power supply, that is, the mains power is directly supplied to the load via the mains bypass 24, and at the same time, the communication cloud box 310 sends a notification (such as: APP push message, SMS, email, phone call, etc.) of the abnormal signal (switch quantity signal) of the conversion of the dual power conversion switch 308 and the abnormal signal (switch quantity signal) of the power failure of the UPS host 222. When the output power of the UPS host 222 returns to normal, the input switch 220 is in a closed state, the output switch 224 is in a closed state, the maintenance bypass switch 260 is in an open state, and the dual power conversion switch 308 automatically switches to the main power supply circuit 22, and the main power supply circuit 22 supplies power to the load.

[0024] The maintenance bypass 26 can deal with possible failures, for example: when the UPS host 222 or the dual power conversion switch 308 needs maintenance, the input switch 220 is disconnected, the output switch 224 is disconnected, and the maintenance bypass switch 260 is closed, and the AC power supply directly supplies power to the load through the maintenance bypass 26.

[0025] The distribution box for uninterruptible power supply of the utility model has automation and intelligent functions. Through various power-off sensors, the power status of the main power supply circuit, the AC bypass and the load circuit can be monitored in real time. The automatic conversion between the main power supply circuit and the AC bypass is realized through the dual power supply conversion switch, and the power status of the main power supply circuit and the AC circuit can be reported in real time. The communication cloud box collects the switching signals of various power-off sensors and the dual power supply conversion switch and issues corresponding early warning notifications, so that the automation level of the distribution box for uninterruptible power supply of the utility model is improved.

[0026] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. A distribution box for an uninterruptible power supply, comprising a box body, characterized in that: The distribution box is provided with a main power supply circuit, a city power bypass, a maintenance bypass, a load circuit and a monitoring circuit. The main power supply circuit is connected in series with an input switch, a UPS host and an output switch in sequence. The city power bypass is connected in parallel to the input end of the input switch and the input end of the output switch. The maintenance bypass is connected in parallel to the input end of the input switch and the output end of the output switch. A maintenance bypass switch is provided on the maintenance bypass. The load circuit is connected to the output end of the output switch. The monitoring circuit includes a city power failure sensor, a UPS output power failure sensor, a load power failure sensor, a dual power conversion switch, a communication cloud box and an audible and visual alarm prompting device. The input end of the city power failure sensor is connected to the input end of the input switch. The dual power conversion switch is connected to the UPS output power failure sensor. Between the output end of the host and the input end of the output switch, the respective power output ends of the AC power off sensor, the UPS output power off sensor, and the load power off sensor are all connected to the input end of the dual power conversion switch, and the respective switch signal output ends of the AC power off sensor, the UPS output power off sensor, the load power off sensor, and the dual power conversion switch are respectively connected to the corresponding switch signal input ends of the communication cloud box, and the sound and light alarm prompt device is connected between the output end of the communication cloud box and the DC power supply interface, and is used to receive the switch signal output from the output end of the communication cloud box, and the switch signal comes from the AC power off sensor, the UPS output power off sensor, the load power off sensor, and the dual power conversion switch.

2. The distribution box for uninterruptible power supply according to claim 1, characterized in that: The UPS output power failure sensor is connected to the main power supply circuit between the UPS output terminal and the input terminal of the dual power conversion switch.

3. The distribution box for uninterruptible power supply according to claim 1, characterized in that: The maintenance bypass switch is also connected to a padlock device.

4. The distribution box for uninterruptible power supply according to claim 3, characterized in that: The power output ends of the mains power failure sensor, the UPS output power failure sensor, and the load power failure sensor are all connected to the grounding end of the communication cloud box.

5. The distribution box for uninterruptible power supply according to claim 4, characterized in that: The communication cloud box also includes a power output terminal and a switch output terminal, and the power output terminal and the switch output terminal are connected to an audible and visual alarm indicating device.

6. The distribution box for uninterruptible power supply according to claim 5, characterized in that: The communication cloud box also includes an antenna, a power switch and a built-in battery.

7. The distribution box for uninterruptible power supply according to claim 1, characterized in that: The UPS host is arranged in the box.

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