JP2949588B2 - Uninterruptible power system - Google Patents
Uninterruptible power systemInfo
- Publication number
- JP2949588B2 JP2949588B2 JP63143349A JP14334988A JP2949588B2 JP 2949588 B2 JP2949588 B2 JP 2949588B2 JP 63143349 A JP63143349 A JP 63143349A JP 14334988 A JP14334988 A JP 14334988A JP 2949588 B2 JP2949588 B2 JP 2949588B2
- Authority
- JP
- Japan
- Prior art keywords
- storage battery
- voltage
- uninterruptible power
- temperature
- type
- 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 - Lifetime
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Stand-By Power Supply Arrangements (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、無停電電源装置に関する。Description: TECHNICAL FIELD The present invention relates to an uninterruptible power supply.
この種の従来例として特開昭56−145735号公報が挙げ
られる。同公報には、陰極吸収式シール形据置蓄電池と
同様に均等充電の不必要なカルシウム電池を使用した無
停電電源装置が開示されている。この装置は、充電電圧
を変える必要が無いため、入力力率の向上、入力容量の
低下がはかれる。Japanese Patent Application Laid-Open No. Sho 56-145735 is a conventional example of this type. This publication discloses an uninterruptible power supply using a calcium battery that does not need to be uniformly charged, like a cathode-absorbing sealed stationary storage battery. This device does not need to change the charging voltage, so that the input power factor can be improved and the input capacity can be reduced.
従来、定電圧定周波の無停電電源装置（以下CVCFと略
す）の蓄電池は、高率放電形鉛蓄電池（HS形）あるいは
アルカリ蓄電池（AHH形）が使用されてきた。最近、メ
ンテナンスフリー及び省スペースの点で陰極吸収式シー
ル形据置蓄電池（以下MSE形蓄電池と略す）を使用する
例が増えてきた。MSE形蓄電池は、蓄電池内に電界液が
存在しないため前記鉛形、アルカリ形蓄電池に比較し、
特に温度上昇がしやすいという問題があった。そのため
従来の制御方法では、蓄電池の短寿命化をまねいたり充
電をやめるためにCVCFを停止する必要があった。Conventionally, a high-rate discharge type lead storage battery (HS type) or an alkaline storage battery (AHH type) has been used as a storage battery of a constant voltage and constant frequency uninterruptible power supply (hereinafter abbreviated as CVCF). Recently, the use of a cathode-absorbing sealed stationary storage battery (hereinafter abbreviated as MSE-type storage battery) has been increasing in terms of maintenance-free and space-saving. The MSE-type storage battery has no electrolysis solution in the storage battery, so the lead-type and alkaline-type storage batteries
In particular, there is a problem that the temperature easily rises. Therefore, in the conventional control method, it was necessary to stop the CVCF in order to shorten the life of the storage battery or stop charging.
本発明の目的は、蓄電池（特にMSE形）を備えたCVCF
を使用した場合の、該４蓄電池の温度上昇に対する保護
をCVCFを止めることなしに行うことにある。An object of the present invention is to provide a CVCF equipped with a storage battery (particularly an MSE type).
Is to protect the four storage batteries against temperature rise without stopping the CVCF.
本発明は、蓄電池を備えた無停電電源装置において、
インバータ部へ直流電圧を出力するとともに、前記直流
電圧によって蓄電池を充電するコンバータ部と、上記充
電値の温度を検出する温度検出手段と、上記温度検出手
段からの出力信号に応じて上記直流電圧を制御する制御
回路とを備え、上記温度検出手段により基準値以上の温
度が検出されると、上記制御回路により、上記直流電圧
が、浮動充電電圧から、上記蓄電池に充電電流がほとん
ど流れずかつ上記無停電電源装置を運転し続けることが
可能な電圧まで上記直流電圧が下げられることを特徴と
するものである。The present invention relates to an uninterruptible power supply having a storage battery,
While outputting a DC voltage to the inverter unit, a converter unit that charges a storage battery with the DC voltage, a temperature detection unit that detects the temperature of the charge value, and the DC voltage according to an output signal from the temperature detection unit. A control circuit for controlling, when the temperature detecting means detects a temperature equal to or higher than a reference value, the control circuit causes the DC voltage to change from a floating charge voltage to a charge current hardly flowing to the storage battery and The DC voltage is reduced to a voltage at which the uninterruptible power supply can continue to be operated.
本発明に係る無停電電源装置は、充電手段からの充電
電圧によって蓄電池の充電が行なわれるが、その充電継
続によって該蓄電池の温度が上昇し、基準値以上の温度
となったとき、それを検出手段で検出して、充電電圧を
浮動充電電圧よりも定い値に下げ、その温度上昇を抑制
する。これにより、CVCFを停止することなしに、蓄電池
の保護を図れる。In the uninterruptible power supply according to the present invention, the storage battery is charged by the charging voltage from the charging means. When the temperature of the storage battery rises due to the continuation of the charging and reaches a temperature equal to or higher than the reference value, the detection is performed. The charging voltage is detected by a means, and the charging voltage is reduced to a fixed value from the floating charging voltage, thereby suppressing the temperature rise. As a result, the storage battery can be protected without stopping the CVCF.
MSE形蓄電池の場合、特に温度上昇しやすいため有効
である。In the case of an MSE type storage battery, it is particularly effective because the temperature easily rises.
以下、本発明の一実施例を第１図により説明する。同
図において、コンバータ３は制御手段であるコンバータ
制御回路５により、直流電圧を制御し、MSE形蓄電池２
に対し均等充電を行なう。また直流電圧は、インバータ
４により定電圧定周波の無停電交流電圧に変換し、負荷
（図示せず）に対し給電を行う。この浮動充電式CVCF1
に使用するMSE形蓄電池２に温度が基準値以上に達した
ときそれを検出する温度上昇警報接点（図示せず）を設
け、この接点からの警報信号をコンバータ制御回路５に
取り込む。コンバータ制御回路５は、この警報信号をも
とに直流電圧を浮動充電電圧である例えば2.25V/セルか
ら、充電電流のほとんど流れない例えば2.13V/セルに電
圧を下げる（第２図）。これにより蓄電池２の温度上昇
が防止でき、また浮動充電式CVCF1を蓄電池２保護のた
めに停止する必要もない。Hereinafter, an embodiment of the present invention will be described with reference to FIG. In the figure, a converter 3 controls a DC voltage by a converter control circuit 5 as a control means, and
Is charged equally. The DC voltage is converted into an uninterruptible AC voltage having a constant voltage and a constant frequency by the inverter 4 to supply power to a load (not shown). This floating rechargeable CVCF1
A temperature rise alarm contact (not shown) for detecting when the temperature reaches a reference value or more is provided in the MSE type storage battery 2 used for the MSE type storage battery 2, and an alarm signal from this contact is taken into the converter control circuit 5. The converter control circuit 5 lowers the DC voltage from the floating charging voltage of, for example, 2.25 V / cell to, for example, 2.13 V / cell where little charging current flows based on the alarm signal (FIG. 2). Thereby, the temperature rise of the storage battery 2 can be prevented, and it is not necessary to stop the floating charge type CVCF 1 for protection of the storage battery 2.
第３図は本発明の他の実施例を示し、直流サイリスタ
スイッチ式CVCFの単線結線図である。コンバータ３は、
ダイオードにより交流を直流に交換する。インバータ４
は、直流電圧を定電圧定周波の無停電交流電圧に変換
し、負荷（図示せず）に対し給電を行なう。受電停電時
には、直流サイリスタスイッチ７をオンさせ蓄電池２か
ら電力を供給するようになっている。充電手段である充
電器８は、蓄電池２に対する専用の充電手段で、該蓄電
池２に対して制御回路５を介して浮動充電を行なう。こ
の実施例は、CVCF1と蓄電池２が、直流サイリスタスイ
ッチ７により切り離されているため、蓄電池２の温度上
昇時は、充電器８を止めることにより対応可能である
が、前述の浮動充電電圧である2.25/セルから2.15V/セ
ルに落とす制御回路５を併設することにより、充電器８
の連続運転が可能となり、充電器８の「入」，「切」操
作を人間が行なう必要が無いため、誤操作をふせぐこと
ができる。FIG. 3 shows another embodiment of the present invention and is a single-line diagram of a DC thyristor switch type CVCF. Converter 3
The diode exchanges AC to DC. Inverter 4
Converts a DC voltage into a constant-voltage / constant-frequency uninterruptible AC voltage and supplies power to a load (not shown). At the time of a power failure, the DC thyristor switch 7 is turned on to supply power from the storage battery 2. A charger 8 serving as a charging unit is a dedicated charging unit for the storage battery 2 and performs floating charging on the storage battery 2 via the control circuit 5. In this embodiment, since the CVCF 1 and the storage battery 2 are separated by the DC thyristor switch 7, when the temperature of the storage battery 2 rises, it can be dealt with by stopping the charger 8. By installing a control circuit 5 that drops 2.25 V / cell to 2.15 V / cell, the charger 8
Can be continuously operated, and there is no need for a human to perform the "on" and "off" operations of the charger 8, so that erroneous operations can be prevented.
MSE形蓄電池２は、蓄電池内に電解液が存在しないた
め、一般的に使用される鉛形蓄電池（HS形）あるいはア
ルカリ形蓄電池（AHH形）に比較し、温度上昇しやすい
ため、本方式の制御が必須のものとなるが、鉛形蓄電池
あるいはアルカリ形蓄電池に対しても本発明は有効であ
り、より長寿命化が望める。Since the MSE-type storage battery 2 has no electrolyte in the storage battery, the temperature of the MSE-type storage battery 2 tends to rise as compared with the commonly used lead-type storage battery (HS type) or alkaline storage battery (AHH type). Although control is essential, the present invention is also effective for a lead-type storage battery or an alkaline storage battery, and a longer life can be expected.
また、何らかの原因により直流電圧が上り、充電電流
が流れすぎによる蓄電池２の温度上昇を発生させても、
制御回路５は直流電圧を下げる方向に働くためにより安
全になる。Also, even if the DC voltage rises for some reason and the temperature of the storage battery 2 rises due to excessive charging current,
The control circuit 5 works in the direction of lowering the DC voltage, so that it is safer.
本発明に係る無停電電源装置によれば、コンバータ部
が蓄電池の充電器を兼ね、更に蓄電池保護時におけるコ
ンバータ出力電圧の下がり方に上記特徴があることによ
って、容易に蓄電池の温度上昇を基準値以下に押えるこ
とができるため、CVCFを停止することなく、蓄電池の保
護を図ることができる。According to the uninterruptible power supply according to the present invention, the converter also serves as a charger for the storage battery, and further has the above-described characteristics in the manner in which the converter output voltage drops when the storage battery is protected. Since the following can be suppressed, the storage battery can be protected without stopping the CVCF.
特にMSE形蓄電池は、その構造上電解液を有していな
いことによって温度上昇しやすいため、本発明は有効で
ある。In particular, the present invention is effective because the temperature of an MSE-type storage battery is easily increased due to the absence of an electrolytic solution due to its structure.
蓄電池に対する充電手段をCVCFと切り離して専用化し
たものにおいても同様の効果が得られる。The same effect can be obtained even when the charging means for the storage battery is separated from the CVCF and dedicated.
第１図は、本発明の一実施例を示すブロック図、第２図
は蓄電池温度上昇と蓄電池充電電圧の関係を示す図、第
３図は直流サイリスタスイッチ方式のCVCFのブロック図
である。 １……浮動充電方式CVCF、２……蓄電池、 ３……コンバータ、４……インバータ、 ５……コンバータ制御回路（制御手段）、 ６……直流サイリスタスイッチ方式CVCF、 ７……直流サイリスタスイッチ、 ８……充電器（充電手段）。FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing a relationship between a battery temperature rise and a battery charging voltage, and FIG. 3 is a block diagram of a DC thyristor switch type CVCF. DESCRIPTION OF SYMBOLS 1 ... Floating charge type CVCF, 2 ... Storage battery, 3 ... Converter, 4 ... Inverter, 5 ... Converter control circuit (control means), 6 ... DC thyristor switch type CVCF, 7 ... DC thyristor switch, 8. Charger (charging means).
───────────────────────────────────────────────────── フロントページの続き (72)発明者 川口 敏雄 茨城県日立市幸町３丁目１番１号 株式 会社日立製作所日立工場内 (56)参考文献 特開 昭61−66377（ＪＰ，Ａ) 特開 昭50−94459（ＪＰ，Ａ) 実開 昭53−50438（ＪＰ，Ｕ) 実公 昭60−5707（ＪＰ，Ｙ１) ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Toshio Kawaguchi 3-1-1 Sachimachi, Hitachi-shi, Ibaraki Hitachi, Ltd. Hitachi Plant (56) References JP-A-61-66377 (JP, A) Sho 50-5094459 (JP, A) Shokai 53-50438 (JP, U) Shoko 60-5707 (JP, Y1)
Claims (1)
電電源装置において、 インバータ部へ直流電圧を出力するとともに、前記直流
電圧によって蓄電池を充電するコンバータ部と、 上記蓄電池の温度を検出する温度検出手段と、 上記温度検出手段からの出力信号に応じて上記直流電圧
を制御する制御回路とを備え、 上記温度検出手段により基準値以上の温度が検出される
と、上記制御回路により、上記直流電圧が、浮動充電電
圧から、上記蓄電池に充電電流がほとんど流れず且つ上
記無停電電源装置を運転し続けることが可能な電圧まで
下げられることを特徴とする無停電電源装置。An uninterruptible power supply device having a sealed storage battery of a cathode absorption type, comprising: a converter for outputting a DC voltage to an inverter, charging the storage battery with the DC voltage, and detecting a temperature of the storage battery. A temperature detection unit, and a control circuit that controls the DC voltage in accordance with an output signal from the temperature detection unit. When the temperature detection unit detects a temperature equal to or higher than a reference value, the control circuit An uninterruptible power supply device wherein the DC voltage is reduced from the floating charge voltage to a voltage at which little charge current flows to the storage battery and the uninterruptible power supply device can be continuously operated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63143349A JP2949588B2 (en) | 1988-06-10 | 1988-06-10 | Uninterruptible power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63143349A JP2949588B2 (en) | 1988-06-10 | 1988-06-10 | Uninterruptible power system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01311832A JPH01311832A (en) | 1989-12-15 |
| JP2949588B2 true JP2949588B2 (en) | 1999-09-13 |
Family
ID=15336723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63143349A Expired - Lifetime JP2949588B2 (en) | 1988-06-10 | 1988-06-10 | Uninterruptible power system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2949588B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001240323A (en) * | 2000-02-28 | 2001-09-04 | Mitsubishi Electric Corp | Control device of elevator |
| JP4221333B2 (en) * | 2004-05-27 | 2009-02-12 | Ｎｅｃフィールディング株式会社 | Uninterruptible power system |
| JP4221381B2 (en) * | 2005-01-19 | 2009-02-12 | Ｎｅｃフィールディング株式会社 | Uninterruptible power system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5544547B2 (en) * | 1973-12-24 | 1980-11-12 | ||
| JPS6166377A (en) * | 1984-09-07 | 1986-04-05 | Nec Corp | System for automatically charging storage battery |
| JPS6173524A (en) * | 1984-09-14 | 1986-04-15 | 株式会社東芝 | No-break power source |
| JPS62293943A (en) * | 1986-06-12 | 1987-12-21 | 富士電機株式会社 | Non-interrupted electric source |
-
1988
- 1988-06-10 JP JP63143349A patent/JP2949588B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01311832A (en) | 1989-12-15 |
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