Uninterruptible power supply apparatus

A power supply device and circuit technology, applied in circuit devices, battery circuit devices, emergency protection circuit devices, etc., can solve problems such as time-consuming, switch function stop, damage, etc., to avoid power supply stop, ensure reliability, and high reliability. sexual effect

Inactive Publication Date: 2007-10-03
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in such a conventional uninterruptible power supply unit, when the diesel generator is prepared for a prolonged power outage, the AC plug of the uninterruptible power supply unit is inserted into the connector of the diesel generator, and the diesel generator is started, there is a problem that even from Diesel generators supply AC power but continue to run on batteries and suddenly stop functioning of the switch due to battery depletion
There is a problem with the battery 212 being drained in this state stopping the switch, causing considerable damage with the stop of the switch
In particular, since the backup power switch stops even by running a diesel generator as a switch, it takes work time to determine the cause, and there is a risk of further damage due to the stop of the switch

Method used

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Embodiment Construction

[0042] FIG. 2 is an explanatory diagram of an equipment environment using an uninterruptible power supply device according to an embodiment of the present invention. In FIG. 2, the uninterruptible power supply device 10 of this embodiment is built in a small private switch 12, and is supplied with AC power by inserting an AC plug 14 leading to the outside into a socket 16-1 connected to an AC line 20, wherein the small The private exchange 12 is installed on the ground of a building or the like, and the AC line 20 is drawn out from the AC power supply device 18 . The small private exchange 12 having the uninterruptible power supply unit 10 of the present embodiment must always operate even if the AC power supply device 18 is stopped as a power source; The battery runs a small private branch exchange 12 . In a usage environment similar to that shown in FIG. 2 , for example, during annual periodic inspections, sometimes the AC power supply 18 is in a power-off state for a long ...

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Abstract

An uninterruptible power supply device connects a battery for power-outage backup to the output side of an AC / DC converter. An input monitoring circuit monitors alternating current input of the AC / DC converter and outputs an alternating current input monitor signal E 1 . An output monitoring circuit monitors the direct current output of the AC / DC converter and outputs a direct current output monitor signal E 2 . A reactivation circuit outputs a reset signal to and reactivates protection circuits of the AC / DC converter when the state that alternating current input is provided and direct current output is not provided is determined based on the alternating current input monitor signal E 1 and the direct current output monitor signal E 2 upon turn-on of alternating current power.

Description

technical field [0001] The present invention relates to an uninterruptible power supply unit having an AC / DC converter which converts input AC power into DC power and supplies it to a load in combination with a backup battery. In particular, the present invention relates to an uninterruptible power supply device capable of automatically restarting even when an AC / DC converter is stopped due to a protective operation against a surge or the like when an AC power supply is turned on. Background technique [0002] Typically, a device such as that of Figure 1 is a known uninterruptible power supply device built in a small private switch. [0003] In FIG. 1 , an uninterruptible power supply device 200 has an AC / DC converter 202 in which a power factor improving circuit (PFC: Power Factor Controller) 204 and a DC / DC converter 206 are provided. When the AC plug 208 is inserted into the outlet of the AC line, the AC / DC converter 202 is supplied with a voltage of AC 100 volts or AC 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/02H02H7/122H02J9/00H02J9/06H02J9/08H02M3/28H02M7/12
CPCH02M1/4225Y02B70/126H02J9/061Y10T307/625Y02B70/10
Inventor 平原实
Owner FUJITSU LTD
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