JP2836286B2 - Uninterruptible power system - Google Patents
Uninterruptible power systemInfo
- Publication number
- JP2836286B2 JP2836286B2 JP3119360A JP11936091A JP2836286B2 JP 2836286 B2 JP2836286 B2 JP 2836286B2 JP 3119360 A JP3119360 A JP 3119360A JP 11936091 A JP11936091 A JP 11936091A JP 2836286 B2 JP2836286 B2 JP 2836286B2
- Authority
- JP
- Japan
- Prior art keywords
- switch
- acid battery
- sealed lead
- circuit voltage
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は無停電電源装置に関する
もので、さらに詳しく言えば、コンピュータや通信機器
等のバックアップ電源として使用される無停電電源装置
の信頼性向上と性能向上とに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an uninterruptible power supply, and more particularly, to an improvement in reliability and performance of an uninterruptible power supply used as a backup power supply for a computer, a communication device and the like. is there.
【０００２】[0002]
【従来の技術】従来の無停電電源装置は、図３のように
常時は商用電源１からの交流電力を直送ライン１０によ
ってコンピュータや通信機器等の負荷４に供給し、停電
時は蓄電池６’からの直流電力をインバータ３で交流電
力に変換して該負荷４に供給することにより、停電によ
る負荷４のトラブルを防止するものである。2. Description of the Related Art A conventional uninterruptible power supply always supplies AC power from a commercial power supply 1 to a load 4 such as a computer or a communication device through a direct transmission line 10 as shown in FIG. The inverter 3 converts the DC power into AC power and supplies the AC power to the load 4, thereby preventing troubles of the load 4 due to a power failure.
【０００３】このような無停電電源装置における蓄電池
６’は、常に商用電源１からの交流電力を整流器２で整
流した直流電力によって浮動充電されて満充電状態が維
持されるように構成され、不意の停電時のバックアップ
が確実に行われるようにしている。[0003] The storage battery 6 'in such an uninterruptible power supply device is configured to be constantly charged by the DC power obtained by rectifying the AC power from the commercial power supply 1 by the rectifier 2 so as to maintain the fully charged state. Backup at power outage is ensured.
【０００４】一方、近年は、このような無停電電源装置
に対してメンテナンスフリーの要求や小型化、低価格化
の要求が高まり、蓄電池６’の密閉化、装置の高実装密
度化が急速に進行してきている。On the other hand, in recent years, demands for maintenance-free, downsizing, and price reduction of such uninterruptible power supply devices have been increasing, and the storage battery 6 ′ has been hermetically sealed and the mounting density of the device has been rapidly increased. It is progressing.
【０００５】すなわち、蓄電池６’として密閉形鉛蓄電
池６が使用され、この密閉形鉛蓄電池６を含めた部品が
筺体内に高密度に実装されるようになってきている。[0005] That is, a sealed lead-acid battery 6 is used as the storage battery 6 ', and components including the sealed lead-acid battery 6 are increasingly mounted in a housing at high density.
【０００６】ところで、密閉形鉛蓄電池６に使用される
正極板は、鉛合金からなる格子体に活物質としての二酸
化鉛が充填されたものであり、充電によって格子体の表
面は酸化腐食されて体積が膨張し、内部応力の発生をも
たらしたり、格子体の強度を低下させる。The positive electrode plate used in the sealed lead-acid battery 6 has a grid made of a lead alloy filled with lead dioxide as an active material, and the surface of the grid is oxidized and corroded by charging. The volume expands, causing the generation of internal stress or reducing the strength of the lattice.
【０００７】従って、無停電電源装置のように浮動充電
状態のもとで使用すると、充電の継続によって格子体は
グロースして負極ストラップとのショート、電槽の破
裂、漏液が発生しやすくなる。Therefore, when the battery is used in a floating charge state as in an uninterruptible power supply, the grid body grows due to continuation of charging, and short-circuit with the negative electrode strap, rupture of the battery case, and liquid leakage easily occur. .
【０００８】一般に、グロースは充電電気量が多いほど
大きいが、このような高密度に実装された密閉形鉛蓄電
池６では電池温度が高くなるため、充電電気量が多くな
って電池温度をさらに上昇させることになる。In general, the larger the amount of electricity charged, the greater the growth. However, in such a high-density sealed lead-acid battery 6, the battery temperature rises, so that the amount of charged electricity increases and the battery temperature further rises. Will be.
【０００９】このため、浮動充電電圧を温度が高くなる
につれて低下させるという温度補償回路を設けているも
のもあるが、その信頼性を向上させるために実際になさ
れていることは、密閉形鉛蓄電池６を２〜３年毎に取り
替えていることである。For this reason, some devices have a temperature compensation circuit for lowering the floating charge voltage as the temperature rises. However, what has actually been done to improve the reliability of the battery is a sealed lead-acid battery. 6 is replaced every 2-3 years.
【００１０】[0010]
【発明が解決しようとする課題】上記のような従来の無
停電電源装置では、長期間にわたって高い信頼性を確保
することができないという問題があった。The conventional uninterruptible power supply as described above has a problem that high reliability cannot be ensured for a long period of time.
【００１１】[0011]
【課題を解決するための手段】上記課題を解決するた
め、請求項１記載の発明は、商用電源からの交流電力を
整流する整流器と、この整流器からの直流電力を交流電
力に変換するインバータと、前記整流器とインバータと
の接続点から第１のスイッチを介して接続された密閉形
鉛蓄電池と、商用電源から前記密閉形鉛蓄電池に第２の
スイッチを介して充電電力を供給する充電器とからな
り、常時は前記商用電源から直接または整流器とインバ
ータとを介して負荷に給電し、停電時は前記第１のスイ
ッチをオンさせて前記密閉形鉛蓄電池からの直流電力を
前記インバータで交流電力に変換して負荷への給電を継
続させ、復電後は前記第１のスイッチをオフさせて商用
電源からの給電に切り換えるとともに、第２のスイッチ
をオンさせて前記充電器を介して前記密閉形鉛蓄電池を
充電するようにした無停電電源装置において、少なくと
も前記商用電源電圧をモニターする機能と、前記第１、
第２の少なくとも一方のスイッチをオンさせた時の密閉
形鉛蓄電池の閉路電圧をモニターする機能と、前記第
１、第２のスイッチをオフさせた時の密閉形鉛蓄電池の
開路電圧をモニターする機能とを有する制御信号発生器
を設け、この制御信号発生器に、常時は前記密閉形鉛蓄
電池の開路電圧をモニターし、この開路電圧が所定値以
下に低下した時、第２のスイッチをオンさせて前記密閉
形鉛蓄電池が充電されるようにし、復電後は前記第１の
スイッチをオフ、第２のスイッチをオンさせて密閉形鉛
蓄電池の閉路電圧をモニターし、閉路電圧が所定値に達
した時、第２のスイッチをオフさせて開路電圧のモニタ
ーを開始するとともに、開路電圧の測定開始時点から開
路電圧の所定値への低下時点までの開路時間をモニター
し、この開路時間に基づいて第２のスイッチをオンさせ
る時間を計算する機能を設けたことを特徴とするもので
ある。また、請求項２記載の発明は、制御信号発生器
に、密閉形鉛蓄電池の内部抵抗をモニターする機能、密
閉形鉛蓄電池の履歴温度をモニターする機能の少なくと
も一方を設けるとともに、開路電圧のモニター値、内部
抵抗のモニター値、履歴温度のモニター値、開路時間の
モニター値のいずれかが所定値に達したとき、または各
モニター値を組み合わせて演算した結果が所定値である
ときに、前記密閉形鉛蓄電池が取り替え時期であること
を表示する表示器を設けたことを特徴とするものであ
る。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an invention according to claim 1 includes a rectifier for rectifying AC power from a commercial power supply, and an inverter for converting DC power from the rectifier into AC power. A sealed lead-acid battery connected from a connection point between the rectifier and the inverter via a first switch, and a charger for supplying charging power from a commercial power supply to the sealed lead-acid battery via a second switch. Normally, directly from the commercial power source or rectifier and inverter.
The power is supplied to the load via the
Switch to turn on the DC power from the sealed lead-acid battery.
The inverter converts the power to AC power and supplies power to the load.
After the power is restored, turn off the first switch to
Switch to the power supply from the power supply and the second switch
To turn on the sealed lead-acid battery via the charger.
An uninterruptible power supply adapted to be charged; a function of monitoring at least the commercial power supply voltage ;
A function of monitoring a closed circuit voltage of the sealed lead-acid battery when the turns on the second at least one of the switches, the first
1. The sealed lead-acid battery when the second switch is turned off
Provided a control signal generator having a function of monitoring the open circuit voltage, the control signal generator, is always the sealed lead acid
Monitor the open circuit voltage of the battery and check that this open
When lowered, turn on the second switch to close the
The lead-acid battery is charged, and after the power is restored, the first
Turn off the switch and turn on the second switch to close the lead
Monitors the closed circuit voltage of the storage battery, and the closed circuit voltage reaches a predetermined value.
The second switch is turned off and the open circuit voltage is monitored.
And start the measurement from the start of the open circuit voltage measurement.
Monitors the open circuit time until the circuit voltage drops to a specified value
Then, based on this open time, the second switch is turned on.
And a function for calculating the time required . Further, the invention according to claim 2 provides a function of monitoring the internal resistance of the sealed lead-acid battery to the control signal generator.
At least a function to monitor the history temperature of closed lead-acid batteries
When one of the monitor value of the open circuit voltage, the monitor value of the internal resistance, the monitor value of the hysteresis temperature, and the monitor value of the open circuit time reaches a predetermined value, or a combination of the monitor values is calculated . The result is the specified value
Sometimes it is time to replace the sealed lead-acid battery
Is displayed .
【００１２】[0012]
【作用】上記の如き構成とすることにより、請求項１記
載の発明では、密閉形鉛蓄電池は浮動充電状態で待機す
ることがなくなり、格子体のグロースの発生を少なくす
ることができる。また、請求項２記載の発明では、密閉
形鉛蓄電池を寿命前に取り替えることができるので、無
停電電源装置の信頼性を向上させることができる。According to the first aspect of the present invention, the sealed lead-acid battery does not need to stand by in a floating charge state, and the growth of the grid body can be reduced. According to the second aspect of the present invention, the sealed lead-acid battery can be replaced before the end of its life, so that the reliability of the uninterruptible power supply can be improved.
【００１３】[0013]
【実施例】図１は、本発明の無停電電源装置のブロック
図で、図３と同一機能を有する部分には同じ符号を付し
て以下の説明を省略する。FIG. 1 is a block diagram of an uninterruptible power supply according to the present invention. Portions having the same functions as those in FIG. 3 are denoted by the same reference numerals, and the following description is omitted.
【００１４】本発明の特徴は、整流器２とインバータ３
との接続点から第１のスイッチ５−１を介して密閉形鉛
蓄電池６を接続するとともに、商用電源１から第２のス
イッチ５−２を介して前記密閉形鉛蓄電池６を充電する
充電器９を接続したもので、商用電源１の電圧をモニタ
ーする機能と、前記第１のスイッチ５−１、第２のスイ
ッチ５−２をオフした時の密閉形鉛蓄電池６の開路電圧
をモニターする機能と、前記第１のスイッチ５−１、第
２のスイッチ５−２の少なくとも一方をオンした時の密
閉形鉛蓄電池６の閉路電圧をモニターする機能とを有す
る制御信号発生器７を設け、常時は制御信号発生器７か
ら送出される信号によって前記第１のスイッチ５−１、
第２のスイッチ５−２をオフさせておいて前記商用電源
１から直送ライン１０を介して、または整流器２とイン
バータ３とを介して負荷４に給電を行うとともに、密閉
形鉛蓄電池６はその開路電圧がモニターされている。A feature of the present invention is that the rectifier 2 and the inverter 3
A charger that connects the sealed lead-acid battery 6 from the connection point with the first lead-in battery 5-1 via the first switch 5-1 and charges the sealed lead-acid battery 6 from the commercial power supply 1 via the second switch 5-2. 9 to monitor the voltage of the commercial power supply 1 and the open circuit voltage of the sealed lead-acid battery 6 when the first switch 5-1 and the second switch 5-2 are turned off. A control signal generator 7 having a function and a function of monitoring a closed circuit voltage of the sealed lead-acid battery 6 when at least one of the first switch 5-1 and the second switch 5-2 is turned on; Normally, the first switch 5-1,
With the second switch 5-2 turned off, power is supplied to the load 4 from the commercial power supply 1 through the direct feed line 10 or through the rectifier 2 and the inverter 3, and the sealed lead-acid battery 6 Open circuit voltage is monitored.
【００１５】そして、制御信号発生器７によって商用電
源１の停電が検出されると、制御信号発生器７から前記
第１のスイッチ５−１をオンさせる信号が送出され、前
記密閉形鉛蓄電池６からの直流電力が第１のスイッチ５
−１を介して前記インバータ３に供給され、インバータ
３で交流電力に変換されて負荷への給電を継続させる。When a power failure of the commercial power supply 1 is detected by the control signal generator 7, a signal for turning on the first switch 5-1 is sent from the control signal generator 7, and the sealed lead-acid battery 6 is turned on. DC power from the first switch 5
-1 is supplied to the inverter 3 and is converted into AC power by the inverter 3 to continue power supply to the load.
【００１６】また、前記密閉形鉛蓄電池６の開路電圧が
１０２Ｖ（単電池当り12.75 Ｖ）以下に低下したことが
検出されると、制御信号発生器７から前記第２のスイッ
チ５−２をオンさせる信号が送出され、前記充電器９に
よって前記密閉形鉛蓄電池６を充電するように構成され
ている。この時、密閉形鉛蓄電池６はその閉路電圧がモ
ニターされている。When it is detected that the open circuit voltage of the sealed lead-acid battery 6 has dropped below 102 V (12.75 V per cell), the control signal generator 7 turns on the second switch 5-2. A signal to cause the sealed lead-acid battery 6 is charged by the charger 9. At this time, the closed circuit voltage of the sealed lead-acid battery 6 is monitored.
【００１７】次に、前記制御信号発生器７によって商用
電源１の復電が検出されると、前記第１のスイッチ５−
１をオフ、第２のスイッチ５−２をオンさせる信号が送
出され、商用電源１から負荷４への給電が開始されると
ともに、充電器９によって密閉形鉛蓄電池６の充電が開
始され、その閉路電圧が所定値に達したことが検出され
ると、制御信号発生器７から前記第２のスイッチ５−２
をオフさせる信号が送出され、密閉形鉛蓄電池６の開路
電圧のモニターが再開される。この時点から前記制御信
号発生器７は次に開路電圧が１０２Ｖ（単電池当り12.7
5 Ｖ）以下に低下するまでの時間（開路時間）をモニタ
ーし、この開路時間に基づいて第２のスイッチ５−２を
オンする時間を計算し、開路電圧の低下時にその時間だ
け密閉形鉛蓄電池６を充電した後第２のスイッチ５−２
をオフさせる機能も備えている。このことにより、密閉
形鉛蓄電池６の充電が必要以上に継続することが防止で
きる。Next, when the control signal generator 7 detects the restoration of the commercial power supply 1, the first switch 5-
1 is turned off, and a signal to turn on the second switch 5-2 is sent, the power supply from the commercial power supply 1 to the load 4 is started, and the charging of the sealed lead-acid battery 6 is started by the charger 9. When it is detected that the closing voltage has reached a predetermined value, the control signal generator 7 outputs the second switch 5-2.
Is turned off, and the monitoring of the open circuit voltage of the sealed lead-acid battery 6 is restarted. From this point on, the control signal generator 7 then switches to an open circuit voltage of 102V (12.7 / cell).
5 V) The time until the voltage drops below 5 V (open circuit time) is monitored, and based on this open time, the time for turning on the second switch 5-2 is calculated. After charging the storage battery 6, the second switch 5-2
There is also a function to turn off. This can prevent the charging of the sealed lead-acid battery 6 from continuing more than necessary.
【００１８】今、上記の如き本発明の無停電電源装置Ａ
と図３のような従来の無停電電源装置Ｂとを４０℃の恒
温室に設定し、６箇月毎に密閉形鉛蓄電池６の１０分間
率容量を調査する寿命性能試験を実施したところ、表１
のような結果が得られた。Now, the uninterruptible power supply A of the present invention as described above
3 and a conventional uninterruptible power supply B as shown in FIG. 3 were set in a constant temperature room at 40 ° C., and a life performance test was conducted every six months to investigate the capacity of the sealed lead-acid battery 6 for 10 minutes. 1
The following results were obtained.
【００１９】[0019]
【表 １】 [Table 1]
【００２０】表１から、本発明の無停電電源装置Ａの密
閉形鉛蓄電池６は６６箇月の試験期間に、約２箇月に１
回の割合で、１回当たり約１２Ａｈ充電され、合計約４
００Ａｈ充電されたのに対し、従来の無停電電源装置Ｂ
の密閉形鉛蓄電池６には常時平均約３０ｍＡの電流が流
れ、合計約６５０Ａｈ充電されて３０箇月経過後に寿命
となったことがわかり、本発明の無停電電源装置Ａは長
時間にわたって高い信頼性が得られることがわかった。From Table 1, it can be seen that the sealed lead-acid battery 6 of the uninterruptible power supply A according to the present invention has a test period of 66 months and about 1 in 2 months.
Approximately 12 Ah per charge at a rate of
00Ah, whereas the conventional uninterruptible power supply B
It can be seen that a current of about 30 mA always flows on average in the sealed lead-acid battery 6, and the battery has reached a life of 30 months after being charged for a total of about 650 Ah. Was obtained.
【００２１】次に、本発明の他の実施例を図２により説
明する。図２の実施例は制御信号発生器７に表示器８を
付加し、開路電圧測定開始時点から該開路電圧の所定値
への低下時点までの開路時間が所定時間より短かくなっ
た時に密閉形鉛蓄電池６を取り替えるように表示するよ
うにしたもので、密閉形鉛蓄電池６の取り替え時期を余
裕をもって表示することができる。Next, another embodiment of the present invention will be described with reference to FIG. In the embodiment of FIG. 2, a display 8 is added to the control signal generator 7, and when the open circuit time from the start of the open circuit voltage measurement to the time when the open circuit voltage falls to a predetermined value becomes shorter than a predetermined time, the closed type is closed. Since the lead storage battery 6 is displayed so as to be replaced, the replacement time of the sealed lead storage battery 6 can be displayed with a margin.
【００２２】すなわち、寿命末期になると密閉形鉛蓄電
池６は自己放電量が増加して開路時間が短くなるため
で、無停電電源装置の信頼性向上に寄与するところが大
である。That is, since the self-discharge amount of the sealed lead-acid battery 6 is increased at the end of the life and the open circuit time is shortened, this greatly contributes to the improvement of the reliability of the uninterruptible power supply.
【００２３】また、この実施例では、制御信号発生器７
に密閉形鉛蓄電池６の内部抵抗をモニターする機能を設
け、この内部抵抗が所定値以上になった時に密閉形鉛蓄
電池６を取り替えるように表示器８に表示させることも
できる。In this embodiment, the control signal generator 7
A function of monitoring the internal resistance of the sealed lead-acid battery 6 may be provided, and the indicator 8 may be displayed so that the sealed lead-acid battery 6 is replaced when the internal resistance becomes a predetermined value or more.
【００２４】さらに、制御信号発生器７に密閉形鉛蓄電
池６の履歴温度をモニターする機能を設け、所定値以上
の温度の期間が所定時間以上継続した時に密閉形鉛蓄電
池６を取り替えるように表示器８に表示させることもで
きる。Further, the control signal generator 7 is provided with a function of monitoring the hysteresis temperature of the sealed lead-acid battery 6, and is displayed so that the sealed lead-acid battery 6 can be replaced when the temperature of a predetermined value or more continues for a predetermined time or more. Can be displayed on the display 8.
【００２５】なお、密閉形鉛蓄電池６の取り替え時期の
表示は、履歴温度のモニター値、開路時間のモニター
値、内部抵抗のモニター値、開路電圧のモニター値を適
宜組み合わせて演算し、その演算結果によって行うこと
も可能である。The replacement time of the sealed lead-acid battery 6 is displayed by appropriately combining the monitor value of the history temperature, the monitor value of the open circuit time, the monitor value of the internal resistance, and the monitor value of the open circuit voltage. It is also possible to do this.
【００２６】上記した実施例は直送ライン１０を用いた
常時商用給電方式のもので説明したが、直送ライン１０
をインバータ３の故障時のバックアップ用として用いる
常時インバータ給電方式のものでも適用できることは言
うまでもない。Although the above embodiment has been described with reference to the continuous commercial power supply system using the direct transmission line 10, the direct
Needless to say, the present invention can also be applied to a constant inverter power supply system which is used as a backup when the inverter 3 fails.
【００２７】[0027]
【発明の効果】実施例において詳述した如く、本発明の
無停電電源装置は、密閉形鉛蓄電池を常時開放状態で待
機させるとともに、その開路電圧をモニターし、開路電
圧が所定値以下に低下した時、開路時間に基づいて計算
された時間だけスイッチをオンさせて密閉形鉛蓄電池を
充電するようにしているから、充電が継続することによ
る密閉形鉛蓄電池６の早期の劣化を防止することができ
る。As has been described in detail in the embodiments, the uninterruptible power supply of the present invention keeps the sealed lead-acid battery in the always-open state and monitors the open-circuit voltage thereof, and the open-circuit voltage drops below a predetermined value. In this case, the sealed lead-acid battery is charged by turning on the switch only for a time calculated based on the opening time, so that the early deterioration of the sealed lead-acid battery 6 due to continuous charging can be prevented. Can be.
【００２８】また、制御信号発生器に設けた密閉形鉛蓄
電池の開路電圧のモニター機能、内部抵抗のモニター機
能、履歴温度のモニター機能、閉路電圧のモニター機能
を、単独もしくは組み合わせて表示器に密閉形鉛蓄電池
の取り替え時期を表示することにより、無停電電源装置
の信頼性向上を図ることができる。The function of monitoring the open circuit voltage, the function of monitoring the internal resistance, the function of monitoring the hysteresis temperature, and the function of monitoring the closed circuit voltage of the sealed lead-acid battery provided in the control signal generator are enclosed in a display unit alone or in combination. The reliability of the uninterruptible power supply can be improved by displaying the replacement time of the lead storage battery.
【図１】本発明の無停電電源装置のブロック図である。FIG. 1 is a block diagram of an uninterruptible power supply according to the present invention.
【図２】本発明の無停電電源装置のブロック図である。FIG. 2 is a block diagram of the uninterruptible power supply of the present invention.
【図３】従来の無停電電源装置のブロック図である。FIG. 3 is a block diagram of a conventional uninterruptible power supply.
１ 商用電源 ２ 整流器 ３ インバータ ４ 負荷 ５−１ 第１のスイッチ ５−２ 第２のスイッチ ６ 密閉形鉛蓄電池 ７ 制御信号発生器 ８ 表示器 ９ 充電器 DESCRIPTION OF SYMBOLS 1 Commercial power supply 2 Rectifier 3 Inverter 4 Load 5-1 First switch 5-2 Second switch 6 Sealed lead-acid battery 7 Control signal generator 8 Display 9 Charger
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平４−178126（ＪＰ，Ａ) 特開 平２−13234（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) H02J 7/34 H02J 9/00 - 9/06────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-178126 (JP, A) JP-A-2-13234 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) H02J 7/34 H02J 9/00-9/06
Claims (2)
器と、この整流器からの直流電力を交流電力に変換する
インバータと、前記整流器とインバータとの接続点から
第１のスイッチを介して接続された密閉形鉛蓄電池と、
商用電源から前記密閉形鉛蓄電池に第２のスイッチを介
して充電電力を供給する充電器とからなり、常時は前記
商用電源から直接または整流器とインバータとを介して
負荷に給電し、停電時は前記第１のスイッチをオンさせ
て前記密閉形鉛蓄電池からの直流電力を前記インバータ
で交流電力に変換して負荷への給電を継続させ、復電後
は前記第１のスイッチをオフさせて商用電源からの給電
に切り換えるとともに、第２のスイッチをオンさせて前
記充電器を介して前記密閉形鉛蓄電池を充電するように
した無停電電源装置において、少なくとも前記商用電源
電圧をモニターする機能と、前記第１、第２の少なくと
も一方のスイッチをオンさせた時の密閉形鉛蓄電池の閉
路電圧をモニターする機能と、前記第１、第２のスイッ
チをオフさせた時の密閉形鉛蓄電池の開路電圧をモニタ
ーする機能とを有する制御信号発生器を設け、この制御
信号発生器に、常時は前記密閉形鉛蓄電池の開路電圧を
モニターし、この開路電圧が所定値以下に低下した時、
第２のスイッチをオンさせて前記密閉形鉛蓄電池が充電
されるようにし、復電後は前記第１のスイッチをオフ、
第２のスイッチをオンさせて密閉形鉛蓄電池の閉路電圧
をモニターし、閉路電圧が所定値に達した時、第２のス
イッチをオフさせて開路電圧のモニターを開始するとと
もに、開路電圧の測定開始時点から開路電圧の所定値へ
の低下時点までの開路時間をモニターし、この開路時間
に基づいて第２のスイッチをオンさせる時間を計算する
機能を設けたことを特徴とする無停電電源装置。1. A rectifier for rectifying AC power from a commercial power supply, an inverter for converting DC power from the rectifier to AC power, and a connection point between the rectifier and the inverter connected via a first switch. Sealed lead-acid battery
From the commercial power source via a second switch to the sealed lead-acid battery consists of a battery charger for supplying charging power, normally the
Directly from commercial power or via rectifier and inverter
Power is supplied to the load, and at the time of a power failure, the first switch is turned on.
The DC power from the sealed lead-acid battery to the inverter
To convert it to AC power and continue to supply power to the load.
Turns off the first switch and supplies power from commercial power
And switch on the second switch to
To charge the sealed lead-acid battery via the charger.
And a function of monitoring at least the commercial power supply voltage, and the first and second at least
A function for monitoring the closed-circuit voltage of the sealed lead-acid battery when one of the switches is turned on, and a function for monitoring the first and second switches.
Monitors the open circuit voltage of a sealed lead-acid battery when the switch is turned off.
The provided control signal generator and a function of over, the control
The signal generator always supplies the open circuit voltage of the sealed lead-acid battery.
Monitoring, and when this open circuit voltage falls below a predetermined value,
Turn on the second switch to charge the sealed lead-acid battery
After the power is restored, the first switch is turned off,
Turn on the second switch to turn on the closed circuit voltage of the sealed lead-acid battery
And when the closed circuit voltage reaches a predetermined value, the second switch
Switch off and start monitoring the open circuit voltage.
From the start of measurement of the open-circuit voltage to the predetermined value of the open-circuit voltage
Monitoring the open time up to the point where the
The time to turn on the second switch based on
An uninterruptible power supply device provided with a function .
部抵抗をモニターする機能、密閉形鉛蓄電池の履歴温度
をモニターする機能の少なくとも一方を設けるととも
に、開路電圧のモニター値、内部抵抗のモニター値、履
歴温度のモニター値、開路時間のモニター値のいずれか
が所定値に達したとき、または各モニター値を組み合わ
せて演算した結果が所定値であるときに、前記密閉形鉛
蓄電池が取り替え時期であることを表示する表示器を設
けたことを特徴とする請求項第１項記載の無停電電源装
置。2. The control signal generator includes a sealed lead-acid battery.
Function to monitor external resistance, hysteresis temperature of sealed lead-acid battery
At least one of the functions to monitor
When any of the open circuit voltage monitor value, the internal resistance monitor value, the historical temperature monitor value, and the open circuit time monitor value reaches a predetermined value, or the result obtained by combining the monitor values is the predetermined value. The closed lead
Set an indicator to indicate that it is time to replace the storage battery.
2. The uninterruptible power supply according to claim 1, wherein the power supply is turned off.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3119360A JP2836286B2 (en) | 1991-04-22 | 1991-04-22 | Uninterruptible power system |
| US07/788,512 US5229650A (en) | 1990-11-07 | 1991-11-06 | Uniterruptible power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3119360A JP2836286B2 (en) | 1991-04-22 | 1991-04-22 | Uninterruptible power system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04322135A JPH04322135A (en) | 1992-11-12 |
| JP2836286B2 true JP2836286B2 (en) | 1998-12-14 |
Family
ID=14759570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3119360A Expired - Fee Related JP2836286B2 (en) | 1990-11-07 | 1991-04-22 | Uninterruptible power system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2836286B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021095999A1 (en) * | 2019-11-13 | 2021-05-20 | 엘에스일렉트릭㈜ | Ups module and ups module control method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4606393B2 (en) * | 2006-08-28 | 2011-01-05 | 京都電機器株式会社 | Instantaneous voltage drop compensation device |
| JP5857200B2 (en) * | 2011-09-26 | 2016-02-10 | パナソニックＩｐマネジメント株式会社 | Independent power supply for containers |
| US10797490B2 (en) * | 2014-03-26 | 2020-10-06 | Intersil Americas LLC | Battery charge system with transition control that protects adapter components when transitioning from battery mode to adapter mode |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0213234A (en) * | 1988-06-28 | 1990-01-17 | Sansha Electric Mfg Co Ltd | Uninterruptible power source equipment |
| JP2844906B2 (en) * | 1990-11-07 | 1999-01-13 | 株式会社ユアサコーポレーション | Uninterruptible power system |
-
1991
- 1991-04-22 JP JP3119360A patent/JP2836286B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021095999A1 (en) * | 2019-11-13 | 2021-05-20 | 엘에스일렉트릭㈜ | Ups module and ups module control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04322135A (en) | 1992-11-12 |
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