JPH037026A - Dc power supply system - Google Patents
Dc power supply systemInfo
- Publication number
- JPH037026A JPH037026A JP1140720A JP14072089A JPH037026A JP H037026 A JPH037026 A JP H037026A JP 1140720 A JP1140720 A JP 1140720A JP 14072089 A JP14072089 A JP 14072089A JP H037026 A JPH037026 A JP H037026A
- Authority
- JP
- Japan
- Prior art keywords
- storage battery
- voltage
- power supply
- power
- load
- 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.)
- Pending
Links
- 230000007423 decrease Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
この発明は商用電源停電時にも安定な直流電力を供給す
る直流電源システムに関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a DC power supply system that supplies stable DC power even during a commercial power outage.
［従来の技術Ｊ
通信装置に安定な直流電力を供給する直流電源システム
としては、一般に商用交流電力を受け、４８Ｖや２１Ｖ
等の直流電圧を出力する直流電源システムが用いられて
いる。この直流電源システムの入力である商用交流電力
が停電した場合にも通信装置に直流電力を供給するため
直流電源システムに蓄電池を備えている。この蓄電池は
一般に通信装置側で必要とする電圧とするため複数の単
電池を直列に接続して用いられる。[Prior art J] DC power supply systems that supply stable DC power to communication devices generally receive commercial AC power and are powered by 48V or 21V.
A DC power supply system that outputs a DC voltage such as the following is used. The DC power supply system is equipped with a storage battery in order to supply DC power to the communication device even in the event of a power outage of the commercial AC power input to the DC power supply system. This storage battery is generally used by connecting a plurality of single cells in series to obtain the voltage required by the communication device.
第２図に従来の直流電源システムを示す、商用交流電源
１１に充電器１２が接続され、充電器１２の一対の出力
端子間に蓄電池１３が接続され、蓄電池１３の一端は１
個または複数個電圧調整用ダイオードの直列回路（以下
ダイオード列と記す）１４を通じて負荷１５の一端に接
続され、負荷１５の他端及びＭ電池１３の他端は互いに
接続される。FIG. 2 shows a conventional DC power supply system. A charger 12 is connected to a commercial AC power supply 11, a storage battery 13 is connected between a pair of output terminals of the charger 12, and one end of the storage battery 13 is connected to a
It is connected to one end of a load 15 through a series circuit (hereinafter referred to as a diode string) 14 of one or more voltage regulating diodes, and the other end of the load 15 and the other end of the M battery 13 are connected to each other.
ダイオード列１４は蓄電池１３に対して順方向とされる
。ダイオード列１４と並列にスイッチ１６が接続される
。The diode array 14 is in the forward direction with respect to the storage battery 13. A switch 16 is connected in parallel with the diode string 14.
充電器１２は蓄電池１３を充電すると共に負荷１５に直
流電力を供給する。商用交流電源１１が停電した時には
充電器１２が停止するため蓄電池１３から負荷１５に直
流電力を供給する。蓄電池１３の電圧が負荷１５の許容
電圧範囲を越えている場合にはスイン１６をオフとして
ダイオード列１４を回路に直列に挿入し、ダイオード列
Ｉ４で電圧降下を生じさせ電圧調整を行うことにより負
荷１５の許容電圧範囲内に押さえるように動作する。蓄
電池１３が放電するにつれて電圧が低下し、負荷１５の
許容電圧範囲の上限からダイオード列１４の電圧降下分
より低くなるとダイオード列１４をスイッチ１６で短絡
し損失を小さくするように動作させていた。蓄電池１３
の電圧が負荷１５の許容電圧範囲の下限を割った場合に
は通信装置である負荷１５はシステムダウンする。Charger 12 charges storage battery 13 and supplies DC power to load 15 . When the commercial AC power supply 11 is out of power, the charger 12 stops, so DC power is supplied from the storage battery 13 to the load 15. If the voltage of the storage battery 13 exceeds the allowable voltage range of the load 15, the switch 16 is turned off, the diode string 14 is inserted in series in the circuit, and the voltage is adjusted by causing a voltage drop in the diode string I4. It operates to keep the voltage within the allowable voltage range of 15. As the storage battery 13 discharges, the voltage decreases, and when it becomes lower than the voltage drop of the diode string 14 from the upper limit of the allowable voltage range of the load 15, the diode string 14 is short-circuited with a switch 16 to reduce the loss. Storage battery 13
If the voltage falls below the lower limit of the allowable voltage range of the load 15, the system of the load 15, which is a communication device, goes down.
しかし、蓄電池１３の電圧が負荷１５の最低許容准圧に
なった場合にも蓄電池１３にはエネルギーが残っており
、この残エネルギーを有効に活用できないという問題が
あった。However, even when the voltage of the storage battery 13 reaches the minimum allowable standard pressure of the load 15, energy remains in the storage battery 13, and there is a problem that this remaining energy cannot be used effectively.
この発明の目的は交流電力停電時に蓄電池のエネルギー
を最大限に活用できる直流電源システムを供給すること
にある。An object of the present invention is to provide a DC power supply system that can make maximum use of the energy of a storage battery during an AC power outage.
「課題を解決するための手段」
この発明によれば商用交流電源に充電器が接続され、そ
の充電器の一対の出力端子間に蓄電池が接続され、その
蓄電池の一端と負荷の一端との間に電圧調整用ダイオー
ド（ダイオード列）が接続され、蓄電池の他端と負荷の
他端とが互いに接続され、蓄電池の両端に直流電力を人
力し、直流電力を出力する直流電源の一対の入力端子が
接続され、その直流電源の一方の出力端子は蓄電池及び
ダイオードの接続点に接続されて、直流電源の出力電圧
が１７４池の出力電圧と加算されるようにされ、その直
２ｉｔ電源の他方の出力端子とダイオード及び負荷の接
続点との間にスイッチが接続され、直′ｌＸ電源の一対
の出力端子間にこれと逆極性で第２ダイオードが接続さ
れる。つまり蓄電池と直流電源の出力側との直列接続が
スイッチを介して負荷の両端に接続される。"Means for Solving the Problem" According to the present invention, a charger is connected to a commercial AC power source, a storage battery is connected between a pair of output terminals of the charger, and one end of the storage battery and one end of a load are connected. A voltage regulating diode (diode string) is connected to the terminal, the other end of the storage battery and the other end of the load are connected to each other, and a pair of input terminals of a DC power supply that inputs DC power to both ends of the storage battery and outputs DC power. is connected, one output terminal of the DC power supply is connected to the connection point of the storage battery and the diode, so that the output voltage of the DC power supply is added to the output voltage of the 174 battery, and the other output terminal of the DC 2IT power supply is A switch is connected between the output terminal and the connection point of the diode and the load, and a second diode with the opposite polarity is connected between the pair of output terminals of the direct current power source. That is, the series connection between the storage battery and the output side of the DC power supply is connected to both ends of the load via the switch.
「作 用Ｊ
商用交流電源が停電した時は蓄電池から負荷へ直流電力
を供給するが、蓄電池の電圧が負荷側の許容電圧範囲よ
り高い場合は電圧調整用ダイオードで電圧降下させて負
荷側の許容電圧範囲内に抑え、蓄電池の電圧が低下して
負荷の許容電圧を下回ってくるとスイッチをオンとして
蓄電池の電圧に直流電源の電圧を加えて負荷へ直流電力
を供給し、負荷の許容電圧範囲内に入るようにする。``Function J'' When the commercial AC power supply fails, DC power is supplied from the storage battery to the load, but if the voltage of the storage battery is higher than the allowable voltage range on the load side, the voltage is lowered with a voltage adjustment diode to meet the load's allowable voltage range. When the voltage of the storage battery decreases and falls below the allowable voltage of the load, the switch is turned on and the voltage of the DC power supply is added to the voltage of the storage battery to supply DC power to the load, reducing the allowable voltage range of the load. Let it go inside.
「実施例」
第１図にこの発明の実施例を示し、第２図と対応する部
分に同一符号を付けである。この発明においては蓄電池
１３の両端に直流電力を入力し、直流電力を出力する直
流型ｌ１ｌ１７の一対の入力端子が接続され、直流電源
１７の一方の出力端子は蓄電池１３及びダイオード列（
電圧調整用ダイオード）１４の接続点に接続され、スイ
ッチ１６の蓄電池１３側は切り離されて直流１１ｉ１１
１７の他方の出力端子に接続される。この時、Ｍ’Ｎ池
１３と直流電源１７の出力側との直列回路の両端電圧は
蓄電池１３の電圧と直流電源１７の出力電圧との和にな
るようにされである。直流電源１７の一対の出力端子間
に第２ダイオード１８が逆極性で接続される。つまり直
流電源１７の正の出力端子側が第２ダイオード１８の陰
極側とする。Embodiment FIG. 1 shows an embodiment of the present invention, and parts corresponding to those in FIG. 2 are given the same reference numerals. In this invention, a pair of input terminals of a DC type l1l17 that inputs DC power and outputs DC power are connected to both ends of the storage battery 13, and one output terminal of the DC power supply 17 connects the storage battery 13 and the diode array (
The voltage regulating diode) 14 is connected to the connection point of the switch 16, and the storage battery 13 side of the switch 16 is disconnected to provide direct current 11i11.
It is connected to the other output terminal of 17. At this time, the voltage across the series circuit between the M'N battery 13 and the output side of the DC power source 17 is made to be the sum of the voltage of the storage battery 13 and the output voltage of the DC power source 17. A second diode 18 is connected between a pair of output terminals of the DC power supply 17 with opposite polarity. In other words, the positive output terminal side of the DC power supply 17 is the cathode side of the second diode 18.
動作について説明すると、商用交流電源ｌｌが正常な場
合には充電器１２は蓄電池１３を充電すると共に負荷１
５へ安定な直流電力を供給する。To explain the operation, when the commercial AC power supply 11 is normal, the charger 12 charges the storage battery 13 and also charges the load 1.
Supply stable DC power to 5.
蓄電池１３が２４個組の場合、充電器１２の出力電圧は
充電電圧５４．５ Ｖ （２，２７Ｖ／ｃｅｌ Ｉ Ｘ
２４ｃｅｌ １＝５４．５Ｖ）となり負荷Ｉ５の許容電
圧（４３■〜５３■）範囲外であるのでスイッチ１６を
開放してダイオード列１４で電圧降下させるように動作
し、負荷１５に直流電力を供給する。In the case of a set of 24 storage batteries 13, the output voltage of the charger 12 is a charging voltage of 54.5 V (2.27 V/cel I
24cell 1 = 54.5V), which is outside the allowable voltage range (43■ to 53■) of the load I5, so the switch 16 is opened and the diode string 14 operates to drop the voltage, supplying DC power to the load 15. do.
商用文流電ｔＡｌｌが停電した場合には充電器１２は停
止するため負荷１５へは蓄電池１３から電力供給を行う
。蓄電池１３の電圧が低下してきて蓄電池電圧が負荷側
の許容電圧の上限からダイオード列１４の電圧降下分を
差し引いた電圧以下になるとスイッチ１６を短絡させて
ダイオード列１４での電圧降下をなくし、直流型１ｆＸ
１７と逆並列に接続されている第２ダイオード１８とを
介して蓄電池１３の直流電力を負荷１５へ供給する。そ
の後、直流電源１７は蓄電池１３の電圧を人力とし、蓄
電池１３の電圧と直流型ａ１７の出力電圧とを加えた電
圧が一定となるように制御される。従って、蓄電池１３
の電圧が負荷１５の最低許容電圧４３Ｖ以下になっても
直流型ａ１７の電圧により負荷１５の電圧は４３Ｖより
高い電圧に維持される。In the event of a power outage in the commercial power supply tAll, the charger 12 will stop, so power is supplied to the load 15 from the storage battery 13. When the voltage of the storage battery 13 decreases and the storage battery voltage becomes less than the voltage obtained by subtracting the voltage drop of the diode string 14 from the upper limit of the allowable voltage on the load side, the switch 16 is short-circuited to eliminate the voltage drop in the diode string 14, and the DC Type 1fX
The DC power of the storage battery 13 is supplied to the load 15 via the second diode 18 connected in antiparallel to the second diode 17 . Thereafter, the DC power supply 17 is controlled so that the voltage of the storage battery 13 is manually controlled so that the voltage obtained by adding the voltage of the storage battery 13 and the output voltage of the DC type a17 is constant. Therefore, storage battery 13
Even if the voltage of the load 15 falls below the minimum allowable voltage of the load 15 of 43V, the voltage of the load 15 is maintained at a voltage higher than 43V by the voltage of the DC type a17.
直流電源１７の出力電圧を負荷１５の最低許容電圧と蓄
電池１３の最低使用電圧との差に選ぶことにより、蓄電
池１３の蓄積エネルギーを最大限に活用することが可能
となる。By selecting the output voltage of the DC power supply 17 to be the difference between the minimum allowable voltage of the load 15 and the minimum working voltage of the storage battery 13, it becomes possible to make maximum use of the energy stored in the storage battery 13.
商用文流電ａｌｌが回復した場合には充電器１２が動作
して蓄電池１３を充電することにより、蓄電池１３にエ
ネルギーが蓄えられ、蓄電池１３の電圧は徐々に高くな
ってくる。充電電圧は５４，５■となり負荷側の許容電
圧の上限値５３Ｖを越えてしまう、そこで、負荷側の電
圧が５３Ｖになるとスイッチ１６を開放してダイオード
列１４を回路に直列に挿入することによりダイオードの
順方向電圧降下を利用して１．５■以上ドロップを生じ
させ、負荷側の許容電圧範囲内に入れるようにスイッチ
１６を制２′Ｂする。When all commercial power is restored, the charger 12 operates to charge the storage battery 13, so that energy is stored in the storage battery 13, and the voltage of the storage battery 13 gradually increases. The charging voltage becomes 54.5■, which exceeds the upper limit of 53V for the allowable voltage on the load side.Therefore, when the voltage on the load side reaches 53V, the switch 16 is opened and the diode string 14 is inserted in series in the circuit. The forward voltage drop of the diode is used to generate a drop of 1.5 or more, and the switch 16 is controlled 2'B so that the voltage falls within the allowable voltage range on the load side.
なお、スイッチ１６をオンにしても、直流電源１７は直
ちには理想的な動作状態にならず、定常状態になるには
少し時間かががる。この間第２ダイオード１８を通じて
蓄電池１３の直流電力が負荷１５へ供給される。この時
、第２ダイオード１８は直流電源１７の出力側を短絡さ
せる作用をするものであって、電圧降下がなるべく小さ
い、例えばショトツキ−ダイオードが使用される。これ
に対してダイオード列１４のダイオードは電圧降下させ
るために用いられるものであって降下電圧が大きい、例
えばＰＮ接合ダイオードが用いられる。Note that even when the switch 16 is turned on, the DC power supply 17 does not immediately reach an ideal operating state, and it takes some time for the DC power supply 17 to reach a steady state. During this time, DC power from the storage battery 13 is supplied to the load 15 through the second diode 18 . At this time, the second diode 18 acts to short-circuit the output side of the DC power supply 17, and is a Schottsky diode, for example, which has a voltage drop as small as possible. On the other hand, the diodes in the diode array 14 are used to drop the voltage, and have a large voltage drop, for example, PN junction diodes.
［発明の効果」
以上、説明したように、この発明によれば蓄電池の蓄積
エネルギーを最大限に活用でき、蓄電池の小形・計量化
が達成できる。例えば、負荷電流が１００ＯＡで蓄電池
２４個組、蓄電池の保持時間が１０分、配線の電圧降下
２■の場合について、従°来の直流電源システムと比較
する。[Effects of the Invention] As explained above, according to the present invention, the energy stored in the storage battery can be utilized to the maximum, and the storage battery can be made smaller and lighter in weight. For example, a comparison will be made with a conventional DC power supply system in the case where the load current is 100 OA, a set of 24 storage batteries is used, the holding time of the storage batteries is 10 minutes, and the wiring voltage drop is 2cm.
従来システムでは負荷側の最低許容電圧になった時の単
電池の電圧は１．８８ Ｖ （４５Ｖ／ ２４ｃｅ１１
＝１．８８Ｖ）となり、この場合必要とされる蓄電池容
量は６８０ＡＨとなる。一方、この発明のシステムでは
蓄電池放電終止電圧は１．６Ｖであるので、直流電源１
７の最大出力電圧を４．６ｖ（４３Ｖ−１，６Ｖ／ｃｅ
ｌ Ｉ Ｘ ２４ｃｅ１１＝４．６ Ｖ）とすると蓄電
池の放電終止電圧まで使用することができる。この場合
の蓄電池容量は４７０ＡＨとなるので蓄電池の設備とし
ては従来の設備に比べ約３割の小形化、経済化が可能と
なる。In the conventional system, the voltage of the single cell when the load side reaches the minimum allowable voltage is 1.88 V (45V/24ce11
= 1.88V), and the required storage battery capacity in this case is 680AH. On the other hand, in the system of this invention, the storage battery discharge final voltage is 1.6V, so the DC power source 1
7 maximum output voltage to 4.6V (43V-1,6V/ce
l I Since the storage battery capacity in this case is 470AH, the storage battery equipment can be made approximately 30% smaller and more economical than conventional equipment.
第１図はこの発明の直流電源システムの構成例を示す接
続図、第２図は従来の直流電源システムの構成を示す接
続図である。FIG. 1 is a connection diagram showing a configuration example of a DC power supply system of the present invention, and FIG. 2 is a connection diagram showing a configuration of a conventional DC power supply system.
Claims (1)
共に一端が負荷の一端に接続された蓄電池と、 その蓄電池の他端と上記負荷の他端との間に順方向に接
続された電圧調整用ダイオードと、上記蓄電池の両端に
一対の入力端子が接続され、直流電力を入力し、直流電
力を出力し、その出力直流電力を上記蓄電池の出力に加
算するように一方の出力端子が上記蓄電池及びダイオー
ドの接続点に接続された直流電源と、 その直流電源の他方の出力端子と上記ダイオード及び負
荷の接続点との間に接続されたスイッチと、 上記直流電源の一対の出力端子間に逆極性で接続された
第２ダイオードとを具備する直流電源システム。(1) A charger to which AC power from a commercial AC power supply is supplied; a storage battery connected to a pair of output terminals of the charger to be charged; and one end connected to one end of a load; and the other end of the storage battery. and the other end of the load, and a pair of input terminals are connected to both ends of the storage battery, inputting DC power, outputting DC power, and outputting DC power. A DC power supply whose one output terminal is connected to the connection point of the storage battery and the diode so as to add electric power to the output of the storage battery, and between the other output terminal of the DC power supply and the connection point of the diode and the load. A DC power supply system comprising: a switch connected to the DC power supply; and a second diode connected with opposite polarity between a pair of output terminals of the DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1140720A JPH037026A (en) | 1989-06-02 | 1989-06-02 | Dc power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1140720A JPH037026A (en) | 1989-06-02 | 1989-06-02 | Dc power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH037026A true JPH037026A (en) | 1991-01-14 |
Family
ID=15275139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1140720A Pending JPH037026A (en) | 1989-06-02 | 1989-06-02 | Dc power supply system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH037026A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016178849A (en) * | 2015-03-23 | 2016-10-06 | アクソンデータマシン株式会社 | Power supply unit |
| JP2020018107A (en) * | 2018-07-25 | 2020-01-30 | 株式会社オートネットワーク技術研究所 | Circuit device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS442809Y1 (en) * | 1965-02-28 | 1969-02-03 |
-
1989
- 1989-06-02 JP JP1140720A patent/JPH037026A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS442809Y1 (en) * | 1965-02-28 | 1969-02-03 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016178849A (en) * | 2015-03-23 | 2016-10-06 | アクソンデータマシン株式会社 | Power supply unit |
| JP2020018107A (en) * | 2018-07-25 | 2020-01-30 | 株式会社オートネットワーク技術研究所 | Circuit device |
| WO2020022037A1 (en) * | 2018-07-25 | 2020-01-30 | 株式会社オートネットワーク技術研究所 | Circuit device |
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