JPH08322162A - Power supply circuit - Google Patents
Power supply circuitInfo
- Publication number
- JPH08322162A JPH08322162A JP7149628A JP14962895A JPH08322162A JP H08322162 A JPH08322162 A JP H08322162A JP 7149628 A JP7149628 A JP 7149628A JP 14962895 A JP14962895 A JP 14962895A JP H08322162 A JPH08322162 A JP H08322162A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- external power
- terminal
- voltage
- storage 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.)
- Pending
Links
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Control Of Voltage And Current In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、内蔵蓄電池及び外部電
源の２系統の電源を切替えて用いる電源回路に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply circuit for switching between two systems of power supply, a built-in storage battery and an external power supply.
【０００２】[0002]
【従来の技術】従来、持ち運び可能な電子機器の電源回
路においては、機器に内蔵される蓄電池と、ＡＣアダプ
タ等の外部電源との両者を使用できるようにしたものが
ある。このような電源回路は、蓄電池を充電する充電器
を接続するための接続端子と、外部電源を接続するため
の接続端子とを有している。上記電源回路においては、
被電源供給回路に外部電源を接続しないときは、充電池
の電圧を被電源供給部に与え、被電源供給回路に外部電
源を接続するときは、外部電源の電圧を被電源供給部に
与え、また、被電源供給回路に充電器を接続するとき
は、充電器の電圧を蓄電池に与えるといった接続状態に
応じて回路動作を切り替える必要がある。2. Description of the Related Art Conventionally, some portable electronic device power supply circuits can use both a storage battery built in the device and an external power supply such as an AC adapter. Such a power supply circuit has a connection terminal for connecting a charger for charging a storage battery and a connection terminal for connecting an external power supply. In the above power supply circuit,
When the external power supply is not connected to the power supply circuit, the voltage of the rechargeable battery is applied to the power supply unit, and when the external power supply is connected to the power supply circuit, the voltage of the external power supply is applied to the power supply unit. Further, when connecting the charger to the power-supplied circuit, it is necessary to switch the circuit operation according to the connection state in which the voltage of the charger is applied to the storage battery.
【０００３】[0003]
【発明が解決しようとする課題】このため、電源回路に
対する外部電源及び充電器の接続状態に応じて回路動作
を切り替えるためのスイッチを設けるとともに、外部電
源及び充電器の接続状態を変える都度、スイッチを切り
替える操作を行わなくてはならず操作性がよいとはいえ
ない。本発明は、このような事情に基づいてなされたも
ので、その目的は、外部電源及び充電器を接続する際に
特別な操作を不要として操作性に優れた電源回路を提供
することにある。Therefore, a switch for switching the circuit operation according to the connection state of the external power supply and the charger to the power supply circuit is provided, and the switch is switched every time the connection state of the external power supply and the charger is changed. It is difficult to say that the operability is good because it is necessary to perform the operation of switching. The present invention has been made in view of the above circumstances, and an object thereof is to provide a power supply circuit having excellent operability that does not require a special operation when connecting an external power supply and a charger.
【０００４】[0004]
【課題を解決するための手段】本発明は、蓄電池と、前
記蓄電池の充電を行う充電器を接続するための充電端子
と、外部電源を接続するための外部電源端子と、前記蓄
電池の電圧及び前記外部電源の電圧のいずれか一方を被
電源供給部に供給するとともに、前記充電端子と前記蓄
電池との接続及び切断を行う切替手段とを有し、前記切
替手段は、前記充電端子及び前記外部電源端子の両方に
電圧が印加されていないときは、前記蓄電池の電圧を被
電源供給部に供給させ、前記充電端子及び前記外部電源
端子のいずれか一方に電圧が印加されているときは、前
記充電端子と前記蓄電池とを接続するとともに、前記外
部電源端子と前記被電源供給部とを接続することを特徴
としている。The present invention is directed to a storage battery, a charging terminal for connecting a charger for charging the storage battery, an external power supply terminal for connecting an external power supply, a voltage of the storage battery, and The power supply unit is supplied with either one of the voltages of the external power source, and has a switching unit that connects and disconnects the charging terminal and the storage battery, the switching unit including the charging terminal and the external unit. When the voltage is not applied to both power supply terminals, the voltage of the storage battery is supplied to the power-supplied part, and when the voltage is applied to any one of the charging terminal and the external power supply terminal, The charging terminal is connected to the storage battery, and the external power supply terminal is connected to the power-supplied part.
【０００５】[0005]
【作用】切替手段は、充電端子及び外部電源端子の両方
に電圧が印加されていないときは、蓄電池の電圧を被電
源供給部に供給させて動作させる。また、充電端子及び
外部電源端子のいずれか一方に電圧が印加されていると
きは、充電端子と蓄電池とを接続するとともに、外部電
源端子と被電源供給部とを接続する。したがって、充電
器が充電端子に接続されていれば、蓄電池に充電がなさ
れ、外部電源が外部電源端子に接続されていれば、被電
源供給部には外部電源が供給される。充電器が充電端子
に接続され、かつ、外部電源が外部電源端子に接続され
ていれば、蓄電池に充電がなされるとともに、被電源供
給部に外部電源が供給される。When the voltage is not applied to both the charging terminal and the external power supply terminal, the switching means causes the voltage of the storage battery to be supplied to the power-supplied part to operate. When a voltage is applied to either the charging terminal or the external power supply terminal, the charging terminal is connected to the storage battery, and the external power supply terminal is connected to the power supply unit. Therefore, if the charger is connected to the charging terminal, the storage battery is charged, and if the external power source is connected to the external power source terminal, the external power source is supplied to the power-supplied part. When the charger is connected to the charging terminal and the external power source is connected to the external power source terminal, the storage battery is charged and the external power source is supplied to the power-supplied part.
【０００６】[0006]
【実施例】次に、本発明について図面を参照して説明す
る。図１は、本発明の電源回路の一実施例を示す概略回
路図である。電源回路１０は、被電源供給部２０に電源
電圧Ｅを供給するものである。電源回路１０には、蓄電
池１１に充電を行う充電器１２を接続する充電端子１３
と、外部電源１４を接続する外部電源端子１５とが設け
られている。充電器１２及び外部電源１４は、それぞれ
ＡＣ電源により動作する。なお、充電器１２、蓄電池１
１、及び外部電源１４のそれぞれの出力電圧は、厳密に
いえば若干異なるが、本実施例においては、同一電圧Ｅ
として示している。Next, the present invention will be described with reference to the drawings. FIG. 1 is a schematic circuit diagram showing an embodiment of a power supply circuit of the present invention. The power supply circuit 10 supplies a power supply voltage E to the power supply receiver 20. A charging terminal 13 for connecting a charger 12 for charging the storage battery 11 to the power supply circuit 10.
And an external power supply terminal 15 for connecting the external power supply 14. The charger 12 and the external power supply 14 are each operated by an AC power supply. In addition, the charger 12 and the storage battery 1
Strictly speaking, the respective output voltages of 1 and the external power supply 14 are slightly different, but in the present embodiment, the same voltage E is used.
Is shown as.
【０００７】リレーＲＬの入力端子の一方は接地されて
おり、他方は、充電端子１３のプラス側に抵抗Ｒ１及び
ダイオードＤ１を介して接続されるとともに、外部電源
端子１５のプラス側に抵抗Ｒ２及びダイオードＤ２を介
して接続されている。One of the input terminals of the relay RL is grounded, and the other is connected to the positive side of the charging terminal 13 via the resistor R1 and the diode D1, and the positive side of the external power supply terminal 15 has the resistor R2 and It is connected through the diode D2.
【０００８】したがって、充電端子１３及び外部電源端
子１５の両方に電圧が印加されていないときには、図１
に実線で示すように、リレーＲＬがブレークしているの
で、リレー接点ｒ１，ｒ２は、それぞれブレーク接点ａ
１，ａ２に接触している。Therefore, when the voltage is not applied to both the charging terminal 13 and the external power supply terminal 15, FIG.
As indicated by the solid line, the relay RL is broken, so that the relay contacts r1 and r2 are respectively broken.
1, a2 are in contact.
【０００９】また、充電端子１３及び外部電源端子１５
の少なくとも一方に電圧が印加されると、入力端子に電
圧が印加されるので、リレーＲＬは、図１に破線で示す
ように、メイクしてリレー接点ｒ１，ｒ２がそれぞれブ
レーク接点ｂ１，ｂ２に接触する。Further, the charging terminal 13 and the external power supply terminal 15
When a voltage is applied to at least one of the two, a voltage is applied to the input terminal. Therefore, the relay RL is made to make the relay contacts r1 and r2 into break contacts b1 and b2, respectively, as shown by the broken line in FIG. Contact.
【００１０】リレーＲＬのリレー接点ｒ１は、蓄電池１
１の端子に接続されており、リレー接点ｒ２は、逆流防
止用のダイオードＤｒを介して外部電源端子１５に接続
されている。リレーＲＬのブレーク接点ａ１は、被電源
供給部に接続されており、メイク接点ｂ１は、逆流防止
用のダイオードＤｒを介して充電端子１３に接続されて
いる。 また、リレーＲＬのブレーク接点ａ２は無接続
であり、メイク接点ｂ２は、被電源供給部２０に電圧を
供給するために接続されている。The relay contact r1 of the relay RL is the storage battery 1
The relay contact r2 is connected to the external power supply terminal 15 via the backflow prevention diode Dr. The break contact a1 of the relay RL is connected to the power-supplied part, and the make contact b1 is connected to the charging terminal 13 via the backflow prevention diode Dr. The break contact a2 of the relay RL is not connected, and the make contact b2 is connected to supply a voltage to the power-supplied part 20.
【００１１】次に、上述の構成による電源回路１０の動
作について説明する。第１に、充電器１２及び外部電源
１４の両者が電源回路１０に接続されていない場合につ
いて説明する。この場合には、電圧が印加されていない
ので、リレーＲＬがブレークしており、リレー接点ｒ
１，ｒ２は、図１に実線で示すように、それぞれブレー
ク接点ａ１，ａ２に接続されている。その結果、蓄電池
１１の電圧がブレーク接点ａ１を介して被電源供給部２
０に供給される。ここで、リレー接点ｒ２は、無接続の
ブレーク接点ａ２に接続されているため、特に動作には
関与していない。Next, the operation of the power supply circuit 10 having the above configuration will be described. First, a case where neither the charger 12 nor the external power supply 14 is connected to the power supply circuit 10 will be described. In this case, since the voltage is not applied, the relay RL is broken and the relay contact r
1, r2 are connected to break contacts a1 and a2, respectively, as shown by the solid line in FIG. As a result, the voltage of the storage battery 11 passes through the break contact a1 and the power-supplied part 2
0 is supplied. Here, since the relay contact r2 is connected to the break contact a2 which is not connected, it does not particularly participate in the operation.
【００１２】第２に、充電器１２のみが電源回路１０の
充電端子１３に接続されている場合について説明する。
この場合には、充電器１２の電圧が印加されるので、リ
レーＲＬがメイクして、リレー接点ｒ１，ｒ２は、図２
に破線で示すように、それぞれメイク接点ｂ１，ｂ２に
接続されている。その結果、充電器１２の電圧は、メイ
ク接点ｂ１を介して蓄電池１１に印加されて充電動作が
なされる。なお、この際、リレー接点ｒ２は、メイク接
点ｂ２に接続されるものの、充電器１２の電圧が被電源
供給部２０へ回り込むことは、ダイオードＤ２によって
阻止されている。Second, the case where only the charger 12 is connected to the charging terminal 13 of the power supply circuit 10 will be described.
In this case, since the voltage of the charger 12 is applied, the relay RL is made and the relay contacts r1 and r2 are
As shown by the broken line in FIG. 1, they are respectively connected to make contacts b1 and b2. As a result, the voltage of the charger 12 is applied to the storage battery 11 via the make contact b1 to perform the charging operation. At this time, the relay contact r2 is connected to the make contact b2, but the diode D2 prevents the voltage of the charger 12 from flowing into the power-supplied part 20.
【００１３】第３に、外部電源１４のみが電源回路１０
の外部電源端子１５に接続されている場合について説明
する。この場合にも、先に述べた第２の場合と同様に、
外部電源１４の電圧が印加されるので、リレーＲＬがメ
イクして、リレー接点ｒ１，ｒ２は、図２に破線で示す
ように、それぞれメイク接点ｂ１，ｂ２に接続されてい
る。その結果、外部電源１４の電圧は、メイク接点ｂ２
を介して被電源供給部２０に印加される。なお、この
際、リレー接点ｒ１はメイク接点ｂ１側に接続されてい
るので、外部電源１４の電圧が蓄電池１１に印加される
ことはない。Third, only the external power supply 14 is the power supply circuit 10.
The case of being connected to the external power supply terminal 15 will be described. Also in this case, as in the second case described above,
Since the voltage of the external power supply 14 is applied, the relay RL is made and the relay contacts r1 and r2 are connected to the make contacts b1 and b2, respectively, as shown by the broken line in FIG. As a result, the voltage of the external power supply 14 becomes
Is applied to the power-supplied part 20 via. At this time, since the relay contact r1 is connected to the make contact b1 side, the voltage of the external power supply 14 is not applied to the storage battery 11.
【００１４】第４に、充電池１２及び外部電源１４の両
者が電源回路１０に接続されている場合について説明す
る。この場合にも、先に述べた第２及び第３の場合と同
様に、外部電源１４の電圧が印加されるので、リレーＲ
Ｌがメイクして、リレー接点ｒ１，ｒ２は、図２に破線
で示すように、それぞれメイク接点ｂ１，ｂ２に接続さ
れている。その結果、充電器１２の電圧は、メイク接点
ｂ１を介して蓄電池１１に印加されるとともに、外部電
源１４の電圧は、メイク接点ｂ２を介して被電源供給部
２０に印加される。Fourth, the case where both the rechargeable battery 12 and the external power supply 14 are connected to the power supply circuit 10 will be described. Also in this case, as in the second and third cases described above, the voltage of the external power supply 14 is applied, so that the relay R
As L makes, the relay contacts r1 and r2 are connected to the make contacts b1 and b2, respectively, as shown by the broken line in FIG. As a result, the voltage of the charger 12 is applied to the storage battery 11 via the make contact b1, and the voltage of the external power source 14 is applied to the power-supplied part 20 via the make contact b2.
【００１５】本実施例のリレーＲＬ、抵抗Ｒ１，Ｒ２、
及びダイオードＤ１，Ｄ２，Ｄｒによって切替手段１０
０が構成されている。The relay RL of this embodiment, the resistors R1 and R2,
And switching means 10 by the diodes D1, D2 and Dr.
0 is configured.
【００１６】以上詳述したように、本実施例の電源回路
によれば、切替手段１００は、充電端子１３及び外部電
源端子１５の両方に電圧が印加されていないときは、蓄
電池１１の電圧を被電源供給部２０に供給している。ま
た、上記切替手段１００は、充電端子１３及び外部電源
端子１５のいずれか一方に電圧が印加されているとき
は、充電端子１３と蓄電池１１とを接続するとともに、
外部電源端子１５と被電源供給部２０とを接続する。こ
のため、充電器１２が充電端子１３に接続されていれ
ば、蓄電池１１に充電がなされ、外部電源１４が外部電
源端子１５に接続されていれば、被電源供給部２０には
外部電源が供給される。充電器１２が充電端子１３に接
続され、かつ、外部電源１４が外部電源端子１５に接続
されていれば、蓄電池１１に充電がなされるとともに、
被電源供給部２０に外部電源１４が供給される。したが
って、外部電源１４及び充電器１２を電源回路１０に接
続する際に特別な操作が不要であり、操作性に優れてい
る。As described in detail above, according to the power supply circuit of this embodiment, the switching means 100 changes the voltage of the storage battery 11 when the voltage is not applied to both the charging terminal 13 and the external power supply terminal 15. The power is supplied to the power receiver 20. Further, the switching means 100 connects the charging terminal 13 and the storage battery 11 when a voltage is applied to one of the charging terminal 13 and the external power supply terminal 15, and
The external power supply terminal 15 and the power supply receiver 20 are connected. Therefore, when the charger 12 is connected to the charging terminal 13, the storage battery 11 is charged, and when the external power source 14 is connected to the external power source terminal 15, the external power source is supplied to the power-supplied part 20. To be done. If the charger 12 is connected to the charging terminal 13 and the external power supply 14 is connected to the external power supply terminal 15, the storage battery 11 is charged, and
The external power supply 14 is supplied to the power receiver 20. Therefore, no special operation is required when connecting the external power supply 14 and the charger 12 to the power supply circuit 10, and the operability is excellent.
【００１７】[0017]
【発明の効果】以上詳述したように、本発明の電源回路
によれば、電源回路の充電端子及び外部電源端子に充電
器及び外部電源の少なくとも一方を接続し、又はいずれ
も接続しないことに対応して、充電器による蓄電池への
充電動作、外部電源による被電源供給部への電源供給動
作、あるいは蓄電池による被電源供給部への電源供給動
作が適切になされるように切替手段が回路動作を切り替
える。したがって、外部電源及び充電器を接続する際に
特別な操作が不要であり、操作性に優れている。As described in detail above, according to the power supply circuit of the present invention, at least one of the charger and the external power supply is connected to the charging terminal and the external power supply terminal of the power supply circuit, or neither of them is connected. Correspondingly, the switching means operates the circuit so that the charging operation to the storage battery by the charger, the power supply operation to the power source supply section by the external power supply, or the power supply operation to the power source supply section by the storage battery is properly performed. Switch. Therefore, no special operation is required when connecting the external power source and the charger, and the operability is excellent.
【図１】本発明の電源回路の一実施例を示す回路図であ
る。FIG. 1 is a circuit diagram showing an embodiment of a power supply circuit of the present invention.
１０ 電源回路 １１ 蓄電池 １２ 充電器 １３ 充電端子 １４ 外部電源 １５ 外部電源端子 １００ 切替手段 ＲＬ リレー ｒ１，ｒ２ リレー接点 ａ１，ａ２ ブレーク接点 ｂ１，ｂ２ メイク接点 Ｒ１，Ｒ２ 抵抗 Ｄ１，Ｄ２，Ｄｒ ダイオード 10 power supply circuit 11 storage battery 12 charger 13 charging terminal 14 external power supply 15 external power supply terminal 100 switching means RL relay r1, r2 relay contact a1, a2 break contact b1, b2 make contact R1, R2 resistance D1, D2, Dr diode
Claims (1)
子と、 外部電源を接続するための外部電源端子と、 前記蓄電池の電圧及び前記外部電源の電圧のいずれか一
方を被電源供給部に供給するとともに、前記充電端子と
前記蓄電池との接続及び切断を行う切替手段とを有し、 前記切替手段は、前記充電端子及び前記外部電源端子の
両方に電圧が印加されていないときは、前記蓄電池の電
圧を被電源供給部に供給させ、 前記充電端子及び前記外部電源端子のいずれか一方に電
圧が印加されているときは、前記充電端子と前記蓄電池
とを接続するとともに、前記外部電源端子と前記被電源
供給部とを接続すること、 を特徴とする電源回路。1. A storage battery, a charging terminal for connecting a charger for charging the storage battery, an external power supply terminal for connecting an external power supply, and one of the voltage of the storage battery and the voltage of the external power supply. While supplying one to the power-supplied part, it has a switching means for connecting and disconnecting the charging terminal and the storage battery, the switching means, the voltage is applied to both the charging terminal and the external power supply terminal. When not charged, the voltage of the storage battery is supplied to the power-supplied part, and when the voltage is applied to one of the charging terminal and the external power supply terminal, the charging terminal and the storage battery are connected. In addition, the external power supply terminal and the power-supplied part are connected to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7149628A JPH08322162A (en) | 1995-05-24 | 1995-05-24 | Power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7149628A JPH08322162A (en) | 1995-05-24 | 1995-05-24 | Power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08322162A true JPH08322162A (en) | 1996-12-03 |
Family
ID=15479387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7149628A Pending JPH08322162A (en) | 1995-05-24 | 1995-05-24 | Power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08322162A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017135776A (en) * | 2016-01-25 | 2017-08-03 | 大和ハウス工業株式会社 | Power supply device |
-
1995
- 1995-05-24 JP JP7149628A patent/JPH08322162A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017135776A (en) * | 2016-01-25 | 2017-08-03 | 大和ハウス工業株式会社 | Power supply device |
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