JPH03103034A - Charge preventing apparatus for primary battery - Google Patents
Charge preventing apparatus for primary batteryInfo
- Publication number
- JPH03103034A JPH03103034A JP1237164A JP23716489A JPH03103034A JP H03103034 A JPH03103034 A JP H03103034A JP 1237164 A JP1237164 A JP 1237164A JP 23716489 A JP23716489 A JP 23716489A JP H03103034 A JPH03103034 A JP H03103034A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- primary battery
- charging
- battery
- power supply
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 230000002265 prevention Effects 0.000 claims description 16
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052744 lithium Inorganic materials 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（概要）
電源装置の停止時の補償電源として一次電池を有する装
置の充電防止装置に関し、
充電防止用のダイオードが正常に機能しない場合であっ
ても、一次電池が充電方向の電圧がかかることを防止す
ることができるようにすることを目的とし、
電源装置の停止時の補償電源として一次電池を有する装
置の充電防止装置において、上記一時電池に充電電圧が
かかった時に電圧を検出して検出信号を発生する電圧検
出手段と、検出信号により電源装置を停止する停止手段
とを備えて構或する。[Detailed Description of the Invention] (Summary) Regarding a charging prevention device for a device that has a primary battery as a compensation power source when the power supply device is stopped, the primary battery can be charged even if the charging prevention diode does not function normally. In a charging prevention device for a device that has a primary battery as a compensating power source when the power supply device is stopped, the charging prevention device is designed to prevent voltage from being applied to the temporary battery when a charging voltage is applied to the temporary battery. The power supply device includes a voltage detection means for detecting voltage and generating a detection signal, and a stop means for stopping the power supply device based on the detection signal.
（産業上の利用分野）
本発明は、一次電池の充電防止装置に係り、特に電源装
置の停止時の補償電源として一次電池を有する装置の充
電防止装置に関する。(Field of Industrial Application) The present invention relates to a charging prevention device for a primary battery, and more particularly to a charging prevention device for a device having a primary battery as a compensation power source when a power supply device is stopped.
（従来の技術）
従来、装置、例えばダイナミックＲＡＭ等の電源の停止
時に装置に電力を供給するバックアップ電源としてリチ
ウム電池等の一次電池を用いる場合がある。このような
装置１０は第４図に示すように、装置１０に電源装置１
１から電力を供給すると共に、この電源装置１１と並列
にリチウム電池１２を設けたものとしている。ここで、
１３，１４はリチウム電池１２からの電力が電源装置１
１への逆流及びリチウム電池１２への充電方向への電圧
印加を防ぐためダイオードを示している。(Prior Art) Conventionally, a primary battery such as a lithium battery is sometimes used as a backup power source for supplying power to a device, such as a dynamic RAM, when the power source is stopped. As shown in FIG. 4, such a device 10 includes a power supply device 1.
1 and a lithium battery 12 is provided in parallel with this power supply device 11. here,
13 and 14, power from the lithium battery 12 is supplied to the power supply device 1
A diode is shown to prevent reverse current to the lithium battery 1 and application of voltage in the charging direction to the lithium battery 12.
ところでこのような装置において、一次電池への充電方
向の電圧印加を防止するためのダイオードｌ４が破損し
た場合や、誤って逆方向に取り付けられた場合には、一
次電池に充電方向の電圧が加えられ、一次電池が液もれ
や破裂の恐れがある。By the way, in such a device, if diode l4, which prevents the application of voltage in the charging direction to the primary battery, is damaged or installed in the wrong direction, the voltage in the charging direction will not be applied to the primary battery. This may cause the primary battery to leak or explode.
本発明は充電防止用のダイオードが正常に機能しない場
合であっても、一次電池が充電方向の電圧がかかること
を防止することができる一次電池の充電防止装置を提供
することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a charging prevention device for a primary battery that can prevent a voltage in the direction of charging from being applied to the primary battery even when a charging prevention diode does not function normally.
本発明にあって、上記の課題を解決するための手段は、
第１図に示すように、電源装置１の停止時の補償電源と
して一次電池２を宥する装置５の充電防止装置において
、一時電池２に充電電圧がかかった時に電圧を検出して
検出信号を発生する電圧検出千段３と、検出信号により
電源装置１を停止する停止千段４とを備えたことである
。In the present invention, means for solving the above problems are as follows:
As shown in FIG. 1, in a charging prevention device of a device 5 that uses a primary battery 2 as a compensating power source when the power supply device 1 is stopped, when a charging voltage is temporarily applied to the battery 2, the voltage is detected and a detection signal is generated. It is provided with 1,000 stages 3 for detecting the generated voltage, and 1,000 stages 4 for stopping the power supply device 1 based on the detection signal.
本発明によれば、一次電池２に充電方向の電圧が加わっ
た時には、電圧検出装置３がこの電圧を検出して、検出
信号を発生する。そして停止千段４はこの検出信号によ
り電源装置１を停止するから一次電池２に充電方向の電
圧が加わることはない。According to the present invention, when a voltage in the charging direction is applied to the primary battery 2, the voltage detection device 3 detects this voltage and generates a detection signal. Since the stop stage 4 stops the power supply device 1 in response to this detection signal, no voltage in the charging direction is applied to the primary battery 2.
（実施例）
以下本発明に係る一次電池の充電防止装置の実施例を図
面に基づいて説明する。(Example) Hereinafter, an example of the charging prevention device for a primary battery according to the present invention will be described based on the drawings.
第１図乃至第３図は本発明に係る一次電池の充電防止装
置の実施例を示すものである。本実施例において、リチ
ウム電池ｌマイナス端子側に電圧検出用の抵抗器６を設
けこの抵抗器６の電位差を電圧検出手段３で検出するも
のとしているそして本実施例においては、電圧検出千段
３は第２図に示すようにサイリスタ７を用いるものとし
、リチウム電池２に充電方向の電圧が加わった時にはオ
ン状態となり電源装置ｌの停止手段４に停止信号を出力
する。1 to 3 show an embodiment of a charging prevention device for a primary battery according to the present invention. In this embodiment, a resistor 6 for voltage detection is provided on the negative terminal side of the lithium battery l, and the potential difference of this resistor 6 is detected by the voltage detection means 3. As shown in FIG. 2, a thyristor 7 is used, and when a voltage in the direction of charging is applied to the lithium battery 2, it is turned on and outputs a stop signal to the stop means 4 of the power supply device 1.
一方、一般に電源装置１には出力電圧異常を検出した時
に電源装置の作動を停止させる停止装置を設けているか
ら、この停止装置に異常電流を検出したときの他上記の
電圧検出手段リチウム電池に充電電圧が加わった時に電
源装置を停止させるようにするものとしている。この停
止装置４は、具体的には第３図に示すように電源装置の
降圧トランス２１の一次側コイル２２に流れる電流を制
御するトランジスタ２３をスイッチングする。On the other hand, the power supply device 1 is generally provided with a stop device that stops the operation of the power supply device when an abnormal output voltage is detected. The power supply device is designed to stop when charging voltage is applied. Specifically, this stop device 4 switches a transistor 23 that controls the current flowing through the primary coil 22 of the step-down transformer 21 of the power supply device, as shown in FIG.
尚、第３図において符号２４、２５は整流用のダイオー
ド、２６．２７は電流平滑用のコンデンサを示している
。In FIG. 3, numerals 24 and 25 indicate rectifying diodes, and 26 and 27 indicate current smoothing capacitors.
従って本実施例によれば、充電防止用のダイオードが破
壊されたり、誤って極性が逆に取り付けられた場合には
電圧検出手段であるサイリスタがオン状態となり停止手
段を構戒するトランジスタがオフ状態となり、降圧トラ
ンスの一次側のコイルへの電流は供給されなくなり、結
果的にリチウム電池への充電方向の電圧はオフ状態とな
る。Therefore, according to this embodiment, if the charging prevention diode is destroyed or the polarity is mistakenly installed, the thyristor serving as the voltage detection means will be turned on, and the transistor that monitors the stopping means will be turned off. Therefore, current is no longer supplied to the primary coil of the step-down transformer, and as a result, the voltage in the direction of charging the lithium battery is turned off.
従って本実施例によれば、一次電池であるリチウム電池
２に充電方向の電圧が加わった時には、電圧検出手段３
がこの電圧を検出して電源装置１の停止手段４を作動さ
せて電流の供給を停止するから、一次電池２に充電電圧
を加えたことにより発生する電池の液もれ、破裂等の事
故を防止することができる。Therefore, according to this embodiment, when a voltage in the charging direction is applied to the lithium battery 2, which is a primary battery, the voltage detection means 3
detects this voltage and activates the stop means 4 of the power supply 1 to stop the supply of current, thereby preventing accidents such as battery leakage and explosion caused by applying charging voltage to the primary battery 2. It can be prevented.
尚、上記実施例においては一次電池としてリチウム電池
を例として説明したが、この電池は一次電池であればど
のような電池であっても適用できる。また、電圧検出手
段としてサイリスタを、また、電源装置の停止手段とし
てスイッチング用のトランジスタを使用したものを例と
して説明したが、他の素子を使用したものであってもよ
いのは勿論である。In the above embodiments, a lithium battery was used as an example of the primary battery, but any type of primary battery can be used. Furthermore, although a thyristor is used as the voltage detecting means and a switching transistor is used as the stopping means of the power supply device, it is of course possible to use other elements.
（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停止時
の補償電源として一次電池を膚する装置の充電防止装置
において、上記一時電池に充電電圧がかかった時に電圧
を検出して検出信号を発生する電圧検出手段と、検出信
号により電源装置を停止する停止手段とを備えるものと
したから、一次電池に充電方向の電圧が加わった時には
、電圧検出装置がこの電圧を検出して、検出信号を発生
する。そして停止手段はこの検出信号により電源装置を
停止するから一次電池に充電方向の電圧が加わることは
なくなり、一次電池に充電電圧を加えたことにより発生
する電池の液もれ破裂等の事故を防止することができる
という効果を奏する。(Effects of the Invention) As explained above, according to the present invention, in a charging prevention device for a device that uses a primary battery as a compensation power source when a power supply device is stopped, voltage is detected when a charging voltage is applied to the temporary battery. Since the device is equipped with a voltage detection means that generates a detection signal and a stop means that stops the power supply device based on the detection signal, when a voltage in the direction of charging is applied to the primary battery, the voltage detection device detects this voltage. and generate a detection signal. The stopping means then stops the power supply device based on this detection signal, so voltage in the direction of charging is no longer applied to the primary battery, thereby preventing accidents such as battery leakage and bursting caused by applying charging voltage to the primary battery. It has the effect of being able to
第１図は本発明の原理及び実施例を示すブロック図、第
２図は第１図に示した一次電池の充電防止装置の電圧検
出手段を示す回路図、第３図は第１図に示した一次電池
の充電防止装置の停止手段を示すブロック図、第４図は
従来の装置を示すブロック図である。
１・・・電源装置
２・・・一次電池
３・・・電圧検出手段
４・・・停止手段Fig. 1 is a block diagram showing the principle and embodiments of the present invention, Fig. 2 is a circuit diagram showing the voltage detection means of the primary battery charging prevention device shown in Fig. 1, and Fig. 3 is the circuit diagram shown in Fig. 1. FIG. 4 is a block diagram showing a conventional device. 1... Power supply device 2... Primary battery 3... Voltage detection means 4... Stopping means
Claims (1)
）を有する装置（５）の充電防止装置において、 上記一次電池（２）に充電電圧がかかった時に電圧を検
出して検出信号を発生する電圧検出手段（３）と、 検出信号により電源装置（１）を停止する停止手段（４
）とを備えたことを特徴とする一次電池の充電防止装置
。[Claims] A primary battery (2
), the charging prevention device (5) comprises a voltage detection means (3) that detects the voltage and generates a detection signal when a charging voltage is applied to the primary battery (2), and a power supply device ( 1) stopping means (4) for stopping the
) A charging prevention device for a primary battery, characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1237164A JPH03103034A (en) | 1989-09-14 | 1989-09-14 | Charge preventing apparatus for primary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1237164A JPH03103034A (en) | 1989-09-14 | 1989-09-14 | Charge preventing apparatus for primary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03103034A true JPH03103034A (en) | 1991-04-30 |
Family
ID=17011331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1237164A Pending JPH03103034A (en) | 1989-09-14 | 1989-09-14 | Charge preventing apparatus for primary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03103034A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0637119A2 (en) * | 1993-07-29 | 1995-02-01 | Eastman Kodak Company | Battery charging system with battery type and polarity discrimination |
| JPH09163629A (en) * | 1995-12-05 | 1997-06-20 | Nec Corp | Charge preventing circuit of battery for memory backup |
| US8803472B2 (en) | 2007-07-28 | 2014-08-12 | Hewlett-Packard Development Company, L.P. | Safety circuit for charging devices |
-
1989
- 1989-09-14 JP JP1237164A patent/JPH03103034A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0637119A2 (en) * | 1993-07-29 | 1995-02-01 | Eastman Kodak Company | Battery charging system with battery type and polarity discrimination |
| EP0637119A3 (en) * | 1993-07-29 | 1995-05-17 | Eastman Kodak Co | Battery charging system with battery type and polarity discrimination. |
| US6043625A (en) * | 1993-07-29 | 2000-03-28 | Eastman Kodak Company | Battery charging system with battery type and polarity discrimination |
| JPH09163629A (en) * | 1995-12-05 | 1997-06-20 | Nec Corp | Charge preventing circuit of battery for memory backup |
| US8803472B2 (en) | 2007-07-28 | 2014-08-12 | Hewlett-Packard Development Company, L.P. | Safety circuit for charging devices |
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