JPH01248935A - Battery backup device - Google Patents
Battery backup deviceInfo
- Publication number
- JPH01248935A JPH01248935A JP63071836A JP7183688A JPH01248935A JP H01248935 A JPH01248935 A JP H01248935A JP 63071836 A JP63071836 A JP 63071836A JP 7183688 A JP7183688 A JP 7183688A JP H01248935 A JPH01248935 A JP H01248935A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power supply
- battery
- load
- supply device
- 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
- 230000002159 abnormal effect Effects 0.000 claims description 10
- 230000005856 abnormality Effects 0.000 claims description 2
- 239000013589 supplement Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Stand-By Power Supply Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
この発明は、各種電子機器の電源として用いられるバッ
テリーバックアップ装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a battery backup device used as a power source for various electronic devices.
（従来の技術）
従来、主電源が異常となった場合を想定して電源部には
バックアップ用の充電可能なバッテリーが備えられるこ
とが知られている。そして、主電源が正常な場合には主
電源により負荷へ電圧を与えるとともに、この電圧によ
ってバッテリーを充電しておき、主電源の異常時には負
荷への電圧供給をバッテリーによるように切換えを行う
のである。(Prior Art) Conventionally, it is known that a power supply section is equipped with a rechargeable battery for backup in case the main power supply becomes abnormal. When the main power supply is normal, the main power supply supplies voltage to the load and charges the battery with this voltage, and when the main power supply is abnormal, the voltage supply to the load is switched to the battery. .
しかしながら、このような従来のバッテリーバックアッ
プ装置では、バッテリーの放電電圧が第２図のように充
電電圧より低下にッケル・カドミュウム電池で約０．２
Ｖ程度）することが知られている。このため、負荷が必
要とする電圧より低い電圧が供給されることになり、負
荷の要求電圧の範囲が厳しい場合にはこのバッテリーバ
ックアップ装置が使用できなかった。However, in such conventional battery backup devices, the discharge voltage of the battery is lower than the charging voltage by about 0.2 in the case of a Leckel cadmium battery, as shown in Figure 2.
(approximately V). For this reason, a voltage lower than the voltage required by the load is supplied, and this battery backup device cannot be used when the required voltage range of the load is strict.
（発明が解決しようとする課題）
上記のように従来のバッテリーバックアップ装置では、
充電可能なバッテリーの放電電圧が充電電圧より低下す
ることに対策を行っていなかったため、負荷が必要とす
る電圧以下の電圧が、バッテリーから供給されるという
問題点が生じていた。(Problem to be solved by the invention) As mentioned above, in the conventional battery backup device,
Since no measures were taken to prevent the discharge voltage of a rechargeable battery from being lower than the charging voltage, a problem occurred in that the battery supplied a voltage lower than the voltage required by the load.
本発明はこのような問題点を解決せんとしてなされたも
ので、その目的は主電源の正常時と異常時とにかかわら
ず、負荷が必要とする電圧を確実に供給することのでき
るバッテリーバックアップ装置を提供することである。The present invention was made to solve these problems, and its purpose is to provide a battery backup device that can reliably supply the voltage required by the load regardless of whether the main power supply is normal or abnormal. The goal is to provide the following.
［発明の構成］
（課題を解決するための手段）
本発明では、所定電圧を出力する電源装置と、バックア
ップ用の充電可能な第１のバッテリー及び第２のバッテ
リーと、前記電源装置の電圧に基づく第１の電圧を負荷
へ与える第１の給電路手段と、前記電源装置の電圧に基
づく第２の電圧を前記第１のバッテリーへ与える第２の
給電路手段と、前記電源装置の電圧に基づく第３の電圧
を前記第２のバッテリーへ与える第３の給電路手段と、
前記電源装置の出力電圧が正常か異常かを検出し、正常
の場合には前記第２の給電路手段と前記第３の給電路手
段とによる給電が前記第１のバッテリーと前記第２のバ
ッテリーとに対して行われるように経路の形成をする一
方、異常の場合には前記第１のバッテリーと前記第２の
バッテリーとを直列接続しその出力電圧を前記負荷へ供
給する経路を形成する経路切換手段とを具備させて、バ
ッテリーバックアップ装置を構成した。[Structure of the Invention] (Means for Solving the Problems) The present invention includes a power supply device that outputs a predetermined voltage, a rechargeable first battery and a second battery for backup, and a power supply device that outputs a predetermined voltage. a first power supply path means for supplying a first voltage based on the voltage of the power supply device to the load; a second power supply path means for supplying the first battery a second voltage based on the voltage of the power supply device; third power supply path means for supplying a third voltage based on the second battery to the second battery;
It is detected whether the output voltage of the power supply device is normal or abnormal, and if it is normal, power is supplied by the second power supply path means and the third power supply path means to the first battery and the second battery. A path is formed to connect the first battery and the second battery in series in case of an abnormality, and a path is formed to supply the output voltage to the load. A battery backup device was constructed by including a switching means.
（作用）
かかる構成によると、電源装置の出力電圧が正常の場合
には第１、第２のバッテリーに対する給電がなされてこ
れらバッテリーが充電されるとともに負荷への給電が上
記電源装置によってなされる一方、この電源装置の出力
電圧が異常となると第１、第２のバッテリーが直列接続
され、放電時の電圧降下が補われた状態で負荷への給電
がなされることになる。(Function) According to this configuration, when the output voltage of the power supply device is normal, power is supplied to the first and second batteries to charge these batteries, and at the same time, power is supplied to the load by the power supply device. When the output voltage of this power supply device becomes abnormal, the first and second batteries are connected in series, and power is supplied to the load while the voltage drop during discharge is compensated for.
（実施例）
以下、図面を参照して本発明の一実施例を説明する。第
１図は本発明の一実施例に係るバッテリーバックアップ
装置の構成図である。同図において、１は電源装置、１
０は負荷を示す。この負荷１０には電源装置１から出力
される電圧Ｖ１が、逆流防止用のダイオード１１を介し
て第１の電圧Ｖ［として供給される。２．３は夫々、充
電可能なバックアップ用の第１、第２のバッテリーを示
す。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a battery backup device according to an embodiment of the present invention. In the same figure, 1 is a power supply device;
0 indicates load. A voltage V1 outputted from the power supply device 1 is supplied to this load 10 as a first voltage V[ through a diode 11 for preventing backflow. Reference numerals 2 and 3 indicate first and second rechargeable backup batteries, respectively.
この第１のバッテリー２には、電源装置１から出力され
る電圧■１が、逆流防止用のダイオード８、電流制限用
の抵抗６を介して第２の電圧ｖ２として与えられる。こ
のとき、電源装＠１から出力される電圧■１は正常値で
あり、電圧検出部４は電圧■１の正常を検出してスイッ
チ５を接点５ａ側へ倒している。同じく、この状態では
電源装置１より出力された電圧ｖ１が、逆流防止用のダ
イオード９、電流制限用の抵抗７を介して第３の電圧■
３として、第２のバッテリー３に与えられる。Voltage (1) output from the power supply device 1 is applied to the first battery 2 as a second voltage (v2) via a diode 8 for preventing backflow and a resistor 6 for limiting current. At this time, the voltage ■1 outputted from the power supply device @1 is a normal value, and the voltage detection section 4 detects that the voltage ■1 is normal and turns the switch 5 toward the contact 5a side. Similarly, in this state, the voltage v1 output from the power supply device 1 is converted to the third voltage v1 through the diode 9 for backflow prevention and the resistor 7 for current limiting.
3 to the second battery 3.
ここで、第２の電圧ｖ２と第３の電圧ｖ３とは、第１及
び第２のバッテリー２．３が放電状態となったとき夫々
から出力される電圧ｖ２′、■３′の和が負荷１０が必
要とする第１の電圧Ｖ、と等しくなるようにマージンが
とられている。電圧検出部４は電源装置１から出力され
る電圧ｖ１を監禮しており、この電圧ｖ１が所定値以下
になると、スイッチ５を図の一点鎖線の状態から図の実
線の状態（接点５ｂ側）へ切換えるもので、逆に、上記
電圧ｖ１が所定値より大であればスイッチ５は一点鎖線
の状態（接点５ａ側）に保持される。Here, the second voltage v2 and the third voltage v3 are the sum of the voltages v2' and ■3' output from the first and second batteries 2.3 when they are in a discharge state, respectively. A margin is taken so that V10 is equal to the required first voltage V. The voltage detection unit 4 monitors the voltage v1 output from the power supply device 1, and when this voltage v1 becomes less than a predetermined value, the switch 5 changes from the state indicated by the dashed line in the figure to the state indicated by the solid line in the figure (on the contact 5b side). ), and conversely, if the voltage v1 is greater than a predetermined value, the switch 5 is held in the state shown by the dashed line (on the contact 5a side).
このように構成されたバッテリーバックアップ装置は以
下のように動作する。The battery backup device configured in this manner operates as follows.
電源装置１の出力電圧Ｖ１が所定値より大であれば（正
常であれば）、電圧検出部４がスイッチ５を接点５ａ側
に倒すから、負荷１０へは電源装置１による給電がなさ
れ、かつ、第１、第２のバツテリー２．３は、夫々、第
２、第３の電圧ｖ２゜ｖ３によって充電される。If the output voltage V1 of the power supply device 1 is higher than a predetermined value (if it is normal), the voltage detection unit 4 turns the switch 5 to the contact 5a side, so that the load 10 is supplied with power by the power supply device 1, and , the first and second batteries 2.3 are charged by the second and third voltages v2 and v3, respectively.
一方、電源装置１の出力電圧Ｖ１が所定値以下となると
（異常となると）、電圧検出部４がスイッチ５を切換え
て接点５ｂ側を選択する。すると、第１、第２のバッテ
リー２，３が直列接続されダイオード１２を介して負荷
１０に対する給電がなされる。この場合、第１、第２の
バッテリー２，３は第２、第３の電圧Ｖ２．Ｖ３より、
夫々低い電圧Ｖ２′、■３′を出力するが、
Ｖ２ ’ ＋Ｖ３’ ＝Ｖ１ （負荷１０が必要とす
る電圧）であり、第２図を用いて説明した電圧降下を補
って、的確なバックアップを行い得る。On the other hand, when the output voltage V1 of the power supply device 1 becomes less than a predetermined value (when it becomes abnormal), the voltage detection section 4 switches the switch 5 to select the contact 5b side. Then, the first and second batteries 2 and 3 are connected in series, and power is supplied to the load 10 via the diode 12. In this case, the first and second batteries 2 and 3 are connected to the second and third voltages V2. From V3,
They output low voltages V2' and ■3', respectively, but V2' + V3' = V1 (voltage required by load 10), which compensates for the voltage drop explained using Fig. 2 and provides accurate backup. It can be done.
尚、負荷１Ｇに並列に接続されたコンデンサ１３は、ス
イッチ５の切換え時の負荷１０への印加電圧が変動する
ことを防止するためのものである。そしてコンデンサ１
３はスイッチ５の切換えが終了する前に、電圧ＶＬに相
当する電荷を電源装置１より与えられて保持している。Note that the capacitor 13 connected in parallel to the load 1G is for preventing the voltage applied to the load 10 from changing when the switch 5 is switched. and capacitor 1
3 is supplied with a charge corresponding to the voltage VL by the power supply device 1 and held therein before the switching of the switch 5 is completed.
これがスイッチ５の切換え時に消費され、電圧変動が防
止され得る。This is consumed when switching the switch 5, and voltage fluctuations can be prevented.
［発明の効果〕
以上説明したように本発明によれば、電源装置の出力電
圧が異常となると、第１、第２のバッテリーが直列接続
され、放電時の電圧降下が補われた状態で負荷への給電
がなされ得る。従って、第１、第２のバッテリーの直列
接続時の放電電圧を考慮して充電することで、負荷が必
要とする電圧を確実に供給することができる。また、電
源装置の出力電圧が正常な場合には、この電源装置の出
力電圧による負荷への給電がなされる。このため、電源
装置の出力電圧の正常、異常に係わりなく負荷に対して
必要な電圧を給電可能となる。[Effects of the Invention] As explained above, according to the present invention, when the output voltage of the power supply device becomes abnormal, the first and second batteries are connected in series, and the voltage drop during discharge is compensated for. Power can be supplied to the Therefore, by charging in consideration of the discharge voltage when the first and second batteries are connected in series, it is possible to reliably supply the voltage required by the load. Further, when the output voltage of the power supply device is normal, power is supplied to the load using the output voltage of the power supply device. Therefore, the necessary voltage can be supplied to the load regardless of whether the output voltage of the power supply device is normal or abnormal.
第１図は本発明の一実施例のブロック図、第２図は充電
可能なバッテリーの充放電特性を示す図である。
１・・・電源装置
２・・・第１のバッテリー
３・・・第２のバッテリー
４・・・電圧検出部
５・・・スイッチ
１０・・・負荷
代理人 弁理士 則 近 憲 缶
周 山王 −
第１図
第２図FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a diagram showing the charging and discharging characteristics of a rechargeable battery. 1...Power supply device 2...First battery 3...Second battery 4...Voltage detection section 5...Switch 10...Load agent Patent attorney Nori Chika Ken Ken Shu Sanno - Figure 1 Figure 2
Claims (1)
可能な第１のバッテリー及び第２のバッテリーと、前記
電源装置の電圧に基づく第１の電圧を負荷へ与える第１
の給電路手段と、前記電源装置の電圧に基づく第２の電
圧を前記第１のバッテリーへ与える第２の給電路手段と
、前記電源装置の電圧に基づく第３の電圧を前記第２の
バッテリーへ与える第３の給電路手段と、前記電源装置
の出力電圧が正常か異常かを検出し、正常の場合には前
記第２の給電路手段と前記第３の給電路手段とによる給
電が前記第１のバッテリーと前記第２のバッテリーとに
対して行われるように経路の形成をする一方、異常の場
合には前記第１のバッテリーと前記第２のバッテリーと
を直列接続しその出力電圧を前記負荷へ供給する経路を
形成する経路切換手段とを具備したことを特徴とするバ
ッテリーバックアップ装置。a power supply device that outputs a predetermined voltage; a rechargeable first battery and a second battery for backup; and a first battery that supplies a first voltage based on the voltage of the power supply device to a load.
a second power supply path means for applying a second voltage based on the voltage of the power supply device to the first battery; and a second power supply path means for applying a third voltage based on the voltage of the power supply device to the second battery. It is detected whether the output voltage of the third power supply path means and the power supply device is normal or abnormal, and if the output voltage is normal or abnormal, the power supply by the second power supply path means and the third power supply path means is performed. While forming a path between the first battery and the second battery, in case of an abnormality, the first battery and the second battery are connected in series and the output voltage is changed. A battery backup device comprising a path switching means for forming a path for supplying the load to the load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63071836A JPH01248935A (en) | 1988-03-28 | 1988-03-28 | Battery backup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63071836A JPH01248935A (en) | 1988-03-28 | 1988-03-28 | Battery backup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01248935A true JPH01248935A (en) | 1989-10-04 |
Family
ID=13472026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63071836A Pending JPH01248935A (en) | 1988-03-28 | 1988-03-28 | Battery backup device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01248935A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05111192A (en) * | 1991-10-09 | 1993-04-30 | Nec Corp | Uninterruptible power supply |
| JP2012005160A (en) * | 2010-06-14 | 2012-01-05 | Hitachi Ltd | Charge/discharge circuit and built-in controller |
| JP2013198297A (en) * | 2012-03-19 | 2013-09-30 | Fujitsu Ltd | Power supply circuit |
| WO2018123391A1 (en) * | 2016-12-28 | 2018-07-05 | 本田技研工業株式会社 | Electric circuit and diagnosis method |
| WO2022044780A1 (en) * | 2020-08-25 | 2022-03-03 | 株式会社デンソー | Power supply system |
-
1988
- 1988-03-28 JP JP63071836A patent/JPH01248935A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05111192A (en) * | 1991-10-09 | 1993-04-30 | Nec Corp | Uninterruptible power supply |
| JP2012005160A (en) * | 2010-06-14 | 2012-01-05 | Hitachi Ltd | Charge/discharge circuit and built-in controller |
| JP2013198297A (en) * | 2012-03-19 | 2013-09-30 | Fujitsu Ltd | Power supply circuit |
| WO2018123391A1 (en) * | 2016-12-28 | 2018-07-05 | 本田技研工業株式会社 | Electric circuit and diagnosis method |
| JPWO2018123391A1 (en) * | 2016-12-28 | 2019-07-11 | 本田技研工業株式会社 | Electric circuit and diagnostic method |
| CN110168840A (en) * | 2016-12-28 | 2019-08-23 | 本田技研工业株式会社 | Circuit and diagnostic method |
| EP3550695A4 (en) * | 2016-12-28 | 2019-12-04 | Honda Motor Co., Ltd. | Electric circuit and diagnosis method |
| US11065961B2 (en) | 2016-12-28 | 2021-07-20 | Honda Motor Co., Ltd. | Electric circuit and diagnosis method |
| CN110168840B (en) * | 2016-12-28 | 2023-04-04 | 本田技研工业株式会社 | Circuit and diagnostic method |
| WO2022044780A1 (en) * | 2020-08-25 | 2022-03-03 | 株式会社デンソー | Power supply system |
| JP2022037563A (en) * | 2020-08-25 | 2022-03-09 | 株式会社デンソー | Power system |
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