JP2677071B2 - Power supply - Google Patents
Power supplyInfo
- Publication number
- JP2677071B2 JP2677071B2 JP23911091A JP23911091A JP2677071B2 JP 2677071 B2 JP2677071 B2 JP 2677071B2 JP 23911091 A JP23911091 A JP 23911091A JP 23911091 A JP23911091 A JP 23911091A JP 2677071 B2 JP2677071 B2 JP 2677071B2
- Authority
- JP
- Japan
- Prior art keywords
- adapter
- power supply
- circuit
- voltage
- battery
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電池を内蔵し、ＡＣア
ダプタを接続してその内蔵電池の充電を行うことができ
る機能を有する電源装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device having a built-in battery and having a function of connecting an AC adapter to charge the built-in battery.
【０００２】[0002]
【従来の技術】図２は従来の電源装置の一例を示す回路
図でである。2. Description of the Related Art FIG. 2 is a circuit diagram showing an example of a conventional power supply device.
【０００３】電池を内蔵し、ＡＣアダプタを接続してそ
の内蔵電池の充電を行うことができる機能を有する従来
の電源装置は、図２に示すように、＋端子１６および−
端子１７において着脱可能なＡＣアダプタ２２と、ＡＣ
アダプタ２２を接続したとき、充電回路１５によって充
電される電池１４を有し、電池１４の電圧を電源供給部
１３を介して出力電圧端子２１から外部に供給する電源
回路２３とを備えており、ＡＣアダプタ２２を電源回路
２３に接続すると自動的に電池１４を充電するように構
成されている。A conventional power supply device having a built-in battery and having a function of connecting an AC adapter to charge the built-in battery has a positive terminal 16 and a negative terminal 16 as shown in FIG.
AC adapter 22 detachable at the terminal 17 and AC
It has a battery 14 that is charged by the charging circuit 15 when the adapter 22 is connected, and a power supply circuit 23 that supplies the voltage of the battery 14 to the outside from the output voltage terminal 21 via the power supply unit 13. When the AC adapter 22 is connected to the power supply circuit 23, the battery 14 is automatically charged.
【０００４】[0004]
【発明が解決しようとする課題】上述したように、従来
の電源装置は、ＡＣアダプタを接続すると自動的に充電
回路が動作して電池を充電するように構成されているた
め、指定されたＡＣアダプタ以外のＡＣアダプタが誤ま
って接続されたときに充電を行うのを防止できないとい
う欠点を有している。この誤まって接続されたＡＣアダ
プタの出力電圧が指定されたＡＣアダプタの出力電圧よ
りも低い場合は、電池が充分に充電された状態となら
ず、また、誤まって接続されたＡＣアダプタの出力電圧
が指定されたＡＣアダプタの出力電圧よりも高い場合
は、電池が過充電の状態となって電池の寿命を短かくす
る。As described above, in the conventional power supply device, when the AC adapter is connected, the charging circuit automatically operates to charge the battery. It has a drawback that charging cannot be prevented when an AC adapter other than the adapter is accidentally connected. If the output voltage of the AC adapter incorrectly connected is lower than the output voltage of the specified AC adapter, the battery is not fully charged, and the AC adapter incorrectly connected If the output voltage is higher than the output voltage of the designated AC adapter, the battery is overcharged, shortening the battery life.
【０００５】[0005]
【課題を解決するための手段】本発明の電源装置は、着
脱可能なＡＣアダプタと、内蔵している電池を充電する
ための充電回路を有する電源回路とを備える電源装置に
おいて、前記ＡＣアダプタに電圧検出端子を設け、前記
電源回路に前記電圧検出端子から取出した前記ＡＣアダ
プタの電圧を計測する電圧検出回路を設け、前記電圧検
出回路で計測した前記ＡＣアダプタの電圧値が指定され
た電圧値と異るときは前記充電回路による前記電池の充
電動作を停止させ、前記電圧検出回路で計測した前記Ａ
Ｃアダプタの電圧値が指定された電圧値と一致するとき
は前記充電回路による前記電池の充電動作を行なわせる
ようにしたものである。A power supply device of the present invention is a power supply device comprising a removable AC adapter and a power supply circuit having a charging circuit for charging a built-in battery. A voltage detection terminal is provided, a voltage detection circuit for measuring the voltage of the AC adapter extracted from the voltage detection terminal is provided in the power supply circuit, and the voltage value of the AC adapter measured by the voltage detection circuit is a designated voltage value. If it is different from the above, the charging operation of the battery by the charging circuit is stopped, and the A
When the voltage value of the C adapter matches the designated voltage value, the charging operation of the battery by the charging circuit is performed.
【０００６】[0006]
【実施例】次に、本発明の実施例について図面を参照し
て説明する。Next, embodiments of the present invention will be described with reference to the drawings.
【０００７】図１は本発明の一実施例を示す回路図であ
る。FIG. 1 is a circuit diagram showing an embodiment of the present invention.
【０００８】図１において、ＡＣアダプタ２は、電源回
路１に着脱され、＋端子６および−端子７によって接続
する。ＡＣアダプタ２はまた、電圧検出端子８において
も電源回路１に接続され、ＡＣアダプタ２の電圧は、抵
抗９ａおよび９ｂによって分圧されて電源回路１内に設
けてある電圧検出回路１０に入力される。電圧検出回路
１０は、この電圧の値を計測し、その電圧値が指定の値
と異る場合は、充電回路５に対して信号を送り、充電回
路５が電池４の充電を行わないように指令を与える。計
測した電圧値が指定の値と一致した場合は、充電回路５
に対して電池４の充電を行うように指令を与える。In FIG. 1, the AC adapter 2 is attached to and detached from the power supply circuit 1 and is connected by the + terminal 6 and the-terminal 7. The AC adapter 2 is also connected to the power supply circuit 1 at the voltage detection terminal 8, and the voltage of the AC adapter 2 is divided by the resistors 9a and 9b and input to the voltage detection circuit 10 provided in the power supply circuit 1. It The voltage detection circuit 10 measures the value of this voltage, and when the voltage value is different from the specified value, sends a signal to the charging circuit 5 so that the charging circuit 5 does not charge the battery 4. Give orders. If the measured voltage value matches the specified value, the charging circuit 5
A command is given to charge the battery 4.
【０００９】電池４の電圧は、電源供給部３を介して出
力電圧端子１１から外部に供給する。The voltage of the battery 4 is supplied to the outside from the output voltage terminal 11 via the power supply unit 3.
【００１０】[0010]
【発明の効果】以上説明したように、本発明の電源装置
は、ＡＣアダプタの電圧を取出すための電圧検出端子
と、この電圧検出端子によって取出したＡＣアダプタの
電圧を計測してそれが所定の値の異なるときに充電回路
の充電動作を停止させる電圧検出回路とを設けることに
より、指定されたＡＣアダプタ以外のＡＣアダプタが誤
まって接続されたときに、電池に対して充電を行うのを
防止することができ、従って電池の寿命が短くなるのを
防止することができるという効果がある。As described above, in the power supply device of the present invention, the voltage detection terminal for taking out the voltage of the AC adapter and the voltage of the AC adapter taken out by this voltage detection terminal are measured and the predetermined value is obtained. By providing a voltage detection circuit that stops the charging operation of the charging circuit when the values differ, it is possible to charge the battery when an AC adapter other than the designated AC adapter is accidentally connected. Therefore, there is an effect that it is possible to prevent the battery life from being shortened.
【図１】本発明の一実施例を示す回路図である。FIG. 1 is a circuit diagram showing one embodiment of the present invention.
【図２】従来の電源回路の一例を示す回路図である。FIG. 2 is a circuit diagram showing an example of a conventional power supply circuit.
１ 電源回路 ２ ＡＣアダプタ ３ 電圧供給部 ４ 電池 ５ 充電回路 ６ ＋端子 ７ −端子 ８ 電圧検出端子 ９ａ 抵抗 ９ｂ 抵抗 １０ 電圧検出回路 １１ 出力電圧端子 １３ 電圧供給部 １４ 電池 １５ 充電回路 １６ ＋端子 １７ −端子 ２１ 出力電圧端子 ２２ ＡＣアダプタ ２３ 電源回路 1 Power Supply Circuit 2 AC Adapter 3 Voltage Supply Section 4 Battery 5 Charging Circuit 6 + Terminal 7-Terminal 8 Voltage Detection Terminal 9a Resistance 9b Resistance 10 Voltage Detection Circuit 11 Output Voltage Terminal 13 Voltage Supply Section 14 Battery 15 Charging Circuit 16 + Terminal 17 -Terminal 21 Output voltage terminal 22 AC adapter 23 Power supply circuit
Claims (2)
る電池を充電するための充電回路を有する電源回路とを
備える電源装置において、前記ＡＣアダプタに電圧検出
端子を設け、前記電圧検出端子から取出した前記ＡＣア
ダプタの電圧を計測してそれが指定された電圧値と異る
ときに前記電池の充電動作を停止させる信号を前記充電
回路に対して送出する電圧検出回路を前記電源回路内に
設けたことを特徴とする電源装置。1. A power supply device comprising a detachable AC adapter and a power supply circuit having a charging circuit for charging a built-in battery, wherein the AC adapter is provided with a voltage detection terminal, and the voltage detection terminal is provided. In the power supply circuit, a voltage detection circuit that measures the voltage of the extracted AC adapter and sends a signal to the charging circuit to stop the charging operation of the battery when the measured voltage is different from the specified voltage value. A power supply device characterized by being provided.
る電池を充電するための充電回路を有する電源回路とを
備える電源装置において、前記ＡＣアダプタに電圧検出
端子を設け、前記電源回路に前記電圧検出端子から取出
した前記ＡＣアダプタの電圧を計測する電圧検出回路を
設け、前記電圧検出回路で計測した前記ＡＣアダプタの
電圧値が指定された電圧値と異るときは前記充電回路に
よる前記電池の充電動作を停止させ、前記電圧検出回路
で計測した前記ＡＣアダプタの電圧値が指定された電圧
値と一致するときは前記充電回路による前記電池の充電
動作を行なわせるようにしたことを特徴とする電源装
置。2. A power supply device comprising a removable AC adapter and a power supply circuit having a charging circuit for charging a built-in battery, wherein the AC adapter is provided with a voltage detection terminal, and the power supply circuit is provided with the voltage detection terminal. A voltage detection circuit for measuring the voltage of the AC adapter taken out from the voltage detection terminal is provided, and when the voltage value of the AC adapter measured by the voltage detection circuit is different from the designated voltage value, the battery by the charging circuit is used. Charging operation of the battery is stopped, and when the voltage value of the AC adapter measured by the voltage detection circuit matches a specified voltage value, the charging operation of the battery by the charging circuit is performed. Power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23911091A JP2677071B2 (en) | 1991-09-19 | 1991-09-19 | Power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23911091A JP2677071B2 (en) | 1991-09-19 | 1991-09-19 | Power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0583864A JPH0583864A (en) | 1993-04-02 |
| JP2677071B2 true JP2677071B2 (en) | 1997-11-17 |
Family
ID=17039951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23911091A Expired - Lifetime JP2677071B2 (en) | 1991-09-19 | 1991-09-19 | Power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2677071B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8354761B2 (en) | 2009-12-25 | 2013-01-15 | Panasonic Corporation | Transforming device, electronic apparatus, and power supply system including the same |
-
1991
- 1991-09-19 JP JP23911091A patent/JP2677071B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0583864A (en) | 1993-04-02 |
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