JPH05346832A - Power source control system for electronic equipment - Google Patents
Power source control system for electronic equipmentInfo
- Publication number
- JPH05346832A JPH05346832A JP4155046A JP15504692A JPH05346832A JP H05346832 A JPH05346832 A JP H05346832A JP 4155046 A JP4155046 A JP 4155046A JP 15504692 A JP15504692 A JP 15504692A JP H05346832 A JPH05346832 A JP H05346832A
- Authority
- JP
- Japan
- Prior art keywords
- power source
- power supply
- drive power
- converter
- switched
- 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
- Power Sources (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複数種類の駆動電源を
有する複数電源方式の電子機器、特に電池あるいは交流
電源を駆動電源とするパーソナルコンピュータ、もしく
はパーソナルワードプロセッサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiple power source type electronic device having a plurality of types of driving power sources, and more particularly to a personal computer or a personal word processor having a battery or an AC power source as a driving power source.
【０００２】[0002]
【従来の技術】近年、パーソナルコンピュータ、もしく
はパーソナルワードプロセッサの普及はめざましく、特
に電池を駆動電源とする携帯型、ノート型、ラップトッ
プ型、パームトップ型は増加の一途を辿っている。2. Description of the Related Art In recent years, personal computers or personal word processors have been remarkably widespread, and in particular, portable types, notebook types, laptop types, and palmtop types using a battery as a driving power source have been increasing in number.
【０００３】中でも、広範なユーザのニーズに応えるた
め、交流電源と、充電可能な２次電池で駆動できる２電
源方式を採用したものが多くなってきている。In particular, in order to meet the needs of a wide range of users, many adopt an AC power source and a dual power source system which can be driven by a rechargeable secondary battery.
【０００４】パーソナルコンピュータ、もしくはパーソ
ナルワードプロセッサを電池駆動で使用する場合には、
充電一回あたりの稼動時間が短いという問題となってお
り、このため、電池駆動用として、機器の動作速度を多
少犠牲になるが、クロック周波数を遅くしたり、ディス
プレイの輝度を落とすなどする消費電力の少ない低消費
電力モードと、交流駆動用には機器の性能を重視する高
特性モードとを設け、駆動電源に応じて、高特性モード
と低消費電力モードを切り換えて使用している。When a personal computer or a personal word processor is driven by a battery,
The problem is that the operating time per charge is short, so the operating speed of the device is somewhat sacrificed for battery drive, but the consumption such as slowing down the clock frequency and reducing the brightness of the display is required. A low power consumption mode with low power consumption and a high characteristic mode that places importance on the performance of the device for AC driving are provided, and the high characteristic mode and the low power consumption mode are switched and used according to the drive power source.
【０００５】このモード切り換えを自動的に行うものと
して、例えば、図３に示す構成の特開平３−１０９６２
５が挙げられる。An example of automatic mode switching is disclosed in, for example, Japanese Unexamined Patent Publication No. 3-10962 having the configuration shown in FIG.
5 is mentioned.
【０００６】このような２電源方式では、駆動電源が交
流電源２であるかどうかの電源検知手段１８を設け、こ
の電源検知手段１８の判別結果に基づいて両モードの切
り換えを切り替え手段１５によって自動的に行ってい
る。In such a dual power source system, a power source detecting means 18 for determining whether or not the driving power source is the AC power source 2 is provided, and switching between the two modes is automatically performed by the switching means 15 based on the determination result of the power source detecting means 18. I am doing it.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上に挙
げた様な２電源方式では、第１の駆動電源２である取り
外し可能な電池または交流電源を何の予告もなく突然切
断すると、第１の電源の接続検知手段１６が切断された
事を検知し、電子機器を低消費電力モードに切り換え、
駆動電源を第２の電源装置１６に切り換え、第２の駆動
電源電圧で動作するＤＣ−ＤＣコンバータ１７を立ち上
げ、電子機器に電源供給する、など一連の動作に時間が
かかり、其の間に電子機器の供給電圧が低下し、ＣＰＵ
の動作が停止したり、メモリ内容が揮発するといった回
復不能のトラブルが発生する。However, in the dual power source system as mentioned above, if the removable battery or the AC power source, which is the first driving power source 2, is suddenly disconnected without any notice, the first Detecting that the power supply connection detecting means 16 is disconnected, switching the electronic device to the low power consumption mode,
The drive power supply is switched to the second power supply device 16, the DC-DC converter 17 that operates at the second drive power supply voltage is started up, and power is supplied to the electronic device. The supply voltage of the electronic device has dropped and the CPU
Unrecoverable troubles such as the operation of the device being stopped and the contents of the memory being volatilized.
【０００８】[0008]
【課題を解決するための手段】本発明は、このような課
題を解決するためになされたもので、取り外し可能な電
池あるいは交流電源を第１の駆動電源とする電子機器に
おいて、電池を駆動電源とする第２の電源装置と、第３
の補助電源装置と、第１の電源の接続状態を検知する検
知手段とを備え、第１の電源が非接続であることを検知
すると、駆動電源を一旦第３の補助電源装置に切り替え
ておき、其の間に第２の電源電圧で動作するＤＣ−ＤＣ
コンバータを立ち上げ、第３の電源から第２の電源に切
り換える様にしたものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and in an electronic device using a removable battery or an AC power supply as a first driving power supply, the battery is a driving power supply. A second power supply device, and a third
Of the auxiliary power supply device and a detection means for detecting the connection state of the first power supply, and when it detects that the first power supply is not connected, the drive power supply is once switched to the third auxiliary power supply device. , Meanwhile DC-DC operating at the second power supply voltage
The converter is started up and switched from the third power supply to the second power supply.
【０００９】[0009]
【実施例】本発明の実施例を図１（請求項１の実施例）
および図２（請求項２の実施例）に示す。FIG. 1 shows an embodiment of the present invention (embodiment of claim 1).
2 and FIG. 2 (embodiment of claim 2).
【００１０】図１において、１は電子機器本体で、２は
第１の駆動電源で、取り外し可能な電池あるいは交流電
源であり、電子機器本体１は、第１切替手段１１、第１
ＤＣ／ＤＣコンバータ１２、第２切替手段１３、負荷で
ある電子装置１４、電子装置１４の消費電力切替手段１
５、第２の駆動電源１６、第２のＤＣ／ＤＣコンバータ
１７、電源検知手段１８、第３の駆動電源１９などで構
成されている。In FIG. 1, reference numeral 1 is an electronic equipment main body, 2 is a first drive power source, which is a removable battery or AC power source, and the electronic equipment main body 1 is a first switching means 11 and a first switching means.
DC / DC converter 12, second switching means 13, electronic device 14 as a load, and power consumption switching means 1 of electronic device 14.
5, the second drive power supply 16, the second DC / DC converter 17, the power supply detection means 18, the third drive power supply 19, and the like.
【００１１】電源検知手段１８は、第１の駆動電源２の
接続状態を検知して各切替手段などを制御するもので、
コネクタの接続状態を機械的に検出するか、または電圧
検出などの方法で、第１の駆動電源２の接続状態を検知
する。The power source detecting means 18 detects the connection state of the first drive power source 2 and controls each switching means and the like.
The connection state of the first drive power supply 2 is detected by mechanically detecting the connection state of the connector or by a method such as voltage detection.
【００１２】第１の駆動電源２が非接続であることを検
知すると、第１ＤＣ／ＤＣコンバータ１２への電力供給
元を第３の駆動電源１９に瞬時に切り替える様、第１切
替手段１１を制御し、同時に、第２のＤＣ／ＤＣコンバ
ータ１７を動作状態にする様制御し、その後第２切替手
段１３を制御して、負荷である電子装置１４への電力供
給元を第１ＤＣ／ＤＣコンバータ１２から第２のＤＣ／
ＤＣコンバータ１７へと切り替え、消費電力切替手段１
５により電子装置１４を低消費電力モードへ切り替え
る。次に第１ＤＣ／ＤＣコンバータ１２を非動作に切り
替え、第３の駆動電源１９を無負荷にする。When it is detected that the first drive power source 2 is not connected, the first switching means 11 is controlled so that the power supply source to the first DC / DC converter 12 is instantly switched to the third drive power source 19. At the same time, the second DC / DC converter 17 is controlled so as to be in an operating state, and then the second switching means 13 is controlled so that the electric power supply source to the electronic device 14 as the load is the first DC / DC converter 12 To the second DC /
Switching to the DC converter 17, power consumption switching means 1
5, the electronic device 14 is switched to the low power consumption mode. Next, the first DC / DC converter 12 is switched to non-operation, and the third drive power supply 19 is made unloaded.
【００１３】第３の駆動電源１９の負荷時間は、短時間
であり、ほとんど消耗する事はなく、図２に示す第２の
実施例のごとく、第２の駆動電源と共用しても良い。The load time of the third drive power source 19 is short, it is hardly consumed, and it may be shared with the second drive power source as in the second embodiment shown in FIG.
【００１４】[0014]
【発明の効果】本発明は、以上説明したように、構成し
たので、第１の駆動電源２である取り外し可能な電池ま
たは交流電源を何の予告もなく突然切断しても、第１の
電源の接続検知手段１６が切断された事を検知し、瞬時
に第３の駆動電源に切り替えるため、従来の様に、駆動
電源を第２の電源装置１６に切り換えて第２の駆動電源
電圧で動作するＤＣ−ＤＣコンバータ１７を立ち上げ電
子機器に電源供給するなど一連の動作に時間がかかり、
其の間に電子機器の供給電圧が低下し、ＣＰＵの動作が
停止したり、メモリ内容が揮発するといった回復不能の
トラブルを発生することがないという優れた効果を発揮
する。Since the present invention is configured as described above, even if the removable battery or the AC power source, which is the first driving power source 2, is suddenly disconnected without any notice, the first power source can be used. Since the connection detecting means 16 detects the disconnection and instantly switches to the third drive power supply, the drive power supply is switched to the second power supply device 16 to operate at the second drive power supply voltage as in the conventional case. A series of operations such as starting up the DC-DC converter 17 to supply power to electronic equipment takes time,
In the meantime, the excellent effect that the unrecoverable trouble such as the supply voltage of the electronic device is lowered, the operation of the CPU is stopped, and the memory contents are volatilized is exerted.
【図１】第１の実施例の回路ブロック図FIG. 1 is a circuit block diagram of a first embodiment.
【図２】第２の実施例の回路ブロック図FIG. 2 is a circuit block diagram of a second embodiment.
【図３】従来例の回路ブロック図FIG. 3 is a circuit block diagram of a conventional example.
１ 電子機器本体 １１ 第１切替手段 １２ 第１ＤＣ／ＤＣコンバータ １３ 第２切替手段 １４ 負荷である電子装置 １５ 電子装置の消費電力切替手段 １６ 第２の駆動電源 １７ 第２のＤＣ／ＤＣコンバータ １８ 電源検知手段 １９ 第３の駆動電源 ２ 第１の駆動電源 DESCRIPTION OF SYMBOLS 1 Electronic device main body 11 1st switching means 12 1st DC / DC converter 13 2nd switching means 14 Electronic device which is a load 15 Electric power consumption switching means 16 2nd drive power supply 17 2nd DC / DC converter 18 Power supply Detection means 19 Third drive power supply 2 First drive power supply
Claims (2)
第１の駆動電源、充電型電池を第２の駆動電源とし、前
記第１および第２の駆動電源それぞれを入力電源とする
第１のＤＣ／ＤＣコンバータと第２のＤＣ／ＤＣコンバ
ータとを備えた電子機器において、 第３の駆動電源装置と、前記第１の駆動電源の接続検知
手段とを設け、 前記第１の駆動電源の非接続を検知すると、前記第１の
駆動電源を前記第３の駆動電源に切り替えた後、前記第
２の駆動電源に切り替えることを特徴とする電子機器の
電源制御方式。1. A first DC / DC which uses a removable battery or an AC power supply as a first drive power supply, a rechargeable battery as a second drive power supply, and each of the first and second drive power supplies as an input power supply. In an electronic device including a DC converter and a second DC / DC converter, a third drive power supply device and a connection detection unit for the first drive power supply are provided to disconnect the first drive power supply. Upon detection, the first drive power source is switched to the third drive power source, and then switched to the second drive power source.
に使用する充電型電池であることを特徴とする請求項１
記載の電子機器の電源制御方式。2. The third drive power source is a rechargeable battery used for the second drive power source.
Power supply control method for the electronic device described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4155046A JPH05346832A (en) | 1992-06-15 | 1992-06-15 | Power source control system for electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4155046A JPH05346832A (en) | 1992-06-15 | 1992-06-15 | Power source control system for electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05346832A true JPH05346832A (en) | 1993-12-27 |
Family
ID=15597494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4155046A Pending JPH05346832A (en) | 1992-06-15 | 1992-06-15 | Power source control system for electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05346832A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10187294A (en) * | 1996-12-27 | 1998-07-14 | Pentel Kk | Handy terminal |
| US7321973B2 (en) | 2003-06-23 | 2008-01-22 | Samsung Electronics Co., Ltd. | System for controlling power to a system part using a control unit and wherein the power to the control unit is controlled using a power controller |
| JP2012100375A (en) * | 2010-10-29 | 2012-05-24 | Hitachi Ltd | Parallel power supply system |
| CN103904723A (en) * | 2012-12-26 | 2014-07-02 | 京瓷办公信息***株式会社 | Power supply apparatus and image forming apparatus including the same |
-
1992
- 1992-06-15 JP JP4155046A patent/JPH05346832A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10187294A (en) * | 1996-12-27 | 1998-07-14 | Pentel Kk | Handy terminal |
| US7321973B2 (en) | 2003-06-23 | 2008-01-22 | Samsung Electronics Co., Ltd. | System for controlling power to a system part using a control unit and wherein the power to the control unit is controlled using a power controller |
| JP2012100375A (en) * | 2010-10-29 | 2012-05-24 | Hitachi Ltd | Parallel power supply system |
| CN103904723A (en) * | 2012-12-26 | 2014-07-02 | 京瓷办公信息***株式会社 | Power supply apparatus and image forming apparatus including the same |
| JP2014126651A (en) * | 2012-12-26 | 2014-07-07 | Kyocera Document Solutions Inc | Power source device and image forming apparatus including the same |
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