JP2000184614A - Dc power supply unit with charging function - Google Patents
Dc power supply unit with charging functionInfo
- Publication number
- JP2000184614A JP2000184614A JP10352230A JP35223098A JP2000184614A JP 2000184614 A JP2000184614 A JP 2000184614A JP 10352230 A JP10352230 A JP 10352230A JP 35223098 A JP35223098 A JP 35223098A JP 2000184614 A JP2000184614 A JP 2000184614A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- storage battery
- switch
- output
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は着脱可能な蓄電池を
電源とするコードレス工具に着脱可能なアダプタを介し
て直流電圧を供給すると共に蓄電池を充電できるように
した充電機能付き直流電源装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DC power supply having a charging function for supplying a DC voltage to a cordless tool powered by a detachable storage battery as a power supply via a detachable adapter and charging the storage battery. is there.
【０００２】[0002]
【従来の技術】コードレス工具は電源ケーブルによる作
業場所の制約は無く、どのような場所においても作業で
きるというメリットを有しているが、蓄電池の容量が低
下すると蓄電池を充電するか別の充電済み蓄電池と交換
しなければならないという問題があった。そこで、作業
場所と交流電源設置場所が近く作業中の移動が少ない場
合には、交流を直流に変換する直流電源を用い、作業場
所と交流電源設置場所が遠く作業中の移動が多い場合に
は蓄電池を用い、作業状況に合わせてコードレス工具の
電源として蓄電池と直流電源を併用していた。2. Description of the Related Art A cordless tool has the advantage of being able to work in any place without restriction of a work place by a power cable, but when the capacity of the storage battery is reduced, the storage battery is charged or another charged one is used. There was a problem that the battery had to be replaced. Therefore, use a DC power supply that converts AC to DC when the work place is close to the AC power supply location and there is little movement during the work.If the work place is far from the AC power supply place and there is a lot of work during the work, A storage battery was used, and both a storage battery and a DC power supply were used as a power source for the cordless tool according to the work situation.
【０００３】しかし、作業場所に充電器と直流電源を持
ち込まなければ効率のよい作業ができないという問題が
ある。この問題を解決する案として特開平２−６５６３
０号、特開平５−５６５６６号の如く、コードレス工具
の電源スイッチがオンの時に蓄電池の充電とコードレス
工具の駆動を同時に行い、電源スイッチがオフの時に蓄
電池の充電のみを行う充電機能付き直流電源装置が提案
されている。[0003] However, there is a problem that efficient work cannot be performed unless a charger and a DC power supply are brought into a work place. To solve this problem, Japanese Patent Laid-Open Publication No.
No. 0, Japanese Patent Application Laid-Open No. 5-56566, DC power supply with charging function for simultaneously charging the storage battery and driving the cordless tool when the power switch of the cordless tool is on, and only charging the storage battery when the power switch is off. A device has been proposed.
【０００４】[0004]
【発明が解決しようとする課題】しかし、現在コードレ
ス工具に使用される蓄電池は１.２〜２.０Ahの容量があ
り、これらの蓄電池を３０分充電、１５分充電、１０分
充電と充電時間を早めようとすると、充電電流は２.４
〜４.０A、４.８〜８.０A、７.２〜１２.０Aと充電電流
が増加する。通常、コードレス工具は機種によるが１０
〜４０Aの範囲で使用されるので、コードレス工具を使
用しながら充電を行うとした場合、直流電源の容量増加
になり、結果として電源の重量及び体積増加を招くとい
う問題が生じる。これを避けるために、電源スイッチが
オンの時にコードレス工具の駆動をし、電源スイッチが
オフの時に充電をするという方式がシェーバの一部の機
種に採用されている。しかし、この方式はシェーバのよ
うに直流電源、電源スイッチ、蓄電池、モータが一つの
ケースに収まっている時は有用であるが、着脱可能な蓄
電池を電源とするコードレス工具に着脱可能なアダプタ
を介して直流電圧を供給する充電機能付き直流電源装置
の場合においては問題がある。すなわち、電源スイッチ
がコードレス工具内に配置されるので、電源スイッチの
オフ時に直流電源装置側で蓄電池の充電を行うとすれ
ば、コードレス工具と直流電源装置を接続するケーブル
の本数が増加し、ケーブルが重くなり使い勝手が悪くな
るばかりか、蓄電池充電の際もケーブルにおいて電力損
失が生じエネルギーの無駄が生じる。However, the storage batteries currently used for cordless tools have a capacity of 1.2 to 2.0 Ah, and these storage batteries are charged for 30 minutes, 15 minutes, 10 minutes and charging time. If you try to speed up, the charging current will be 2.4
The charging current increases to 4.0 A, 4.8 to 8.0 A, 7.2 to 12.0 A. Normally, cordless tools depend on the model, but 10
Since it is used in the range of 40 A, if charging is performed while using a cordless tool, the capacity of the DC power supply increases, resulting in a problem that the weight and volume of the power supply increase. In order to avoid this, a method of driving the cordless tool when the power switch is on and charging when the power switch is off has been adopted in some models of the shaver. However, this method is useful when a DC power supply, a power switch, a storage battery, and a motor are housed in one case, such as a shaver. However, there is a problem in the case of a DC power supply device having a charging function for supplying a DC voltage. That is, since the power switch is disposed in the cordless tool, if the storage battery is charged on the DC power supply side when the power switch is turned off, the number of cables connecting the cordless tool and the DC power supply increases, and the number of cables increases. In addition to the heavy weight, the usability is deteriorated, and power loss occurs in the cable when charging the storage battery, resulting in waste of energy.
【０００５】本発明の目的は、上記した従来技術の欠点
をなくし、直流電源の重量及び体積を増やすことなく、
かつコードレス工具に着脱可能なアダプタを備えたケー
ブルの本数を増やすことなく、コードレス工具の駆動及
びび蓄電池の充電を行えるようにすることである。It is an object of the present invention to eliminate the above-mentioned disadvantages of the prior art and to increase the weight and volume of a DC power supply.
Another object of the present invention is to enable driving of a cordless tool and charging of a storage battery without increasing the number of cables provided with adapters that can be attached to and detached from the cordless tool.
【０００６】[0006]
【課題を解決するための手段】上記目的は、直流電源側
でコードレス工具の駆動を検出し、コードレス工具の駆
動時は充電をせず、コードレス工具が停止している時に
蓄電池への充電を行うことにより達成される。SUMMARY OF THE INVENTION It is an object of the present invention to detect the operation of a cordless tool on the side of a DC power source, charge the battery when the cordless tool is driven, and charge the storage battery when the cordless tool is stopped. This is achieved by:
【０００７】[0007]
【発明の実施の形態】以下一実施形態を示す図面を参照
して本発明を説明する。本発明充電機能付き直流電源装
置は、図３に示す如く、コード組１、本体２及びケーブ
ル組３から構成される。コード組１は、一端に商用交流
電源に接続されるプラグ１１を設けた入力ケーブル１２
からなる。本体２は、図１に示す如く、商用交流電源を
整流平滑する整流平滑手段２１、DC−DCコンバータ（以
下単にコンバータという）２２、コードレス工具４のモ
ータ４１あるいは蓄電池５に流れる電流を検出する負荷
電流検出手段２３、電源スイッチ４２のオンオフ状態を
検出するスイッチ動作検出手段２４、電源スイッチ４２
のオンオフを判別することによりコードレス工具４の駆
動を検出し、電源スイッチ４２のオフ時には蓄電池５へ
の充電を行い、電源スイッチ４２のオン時には蓄電池５
への充電を停止してコードレス工具４へのみ電源供給を
行うようにするスイッチ切換手段２５、電源スイッチ４
２のオフ時に、負荷電流検出手段２３からの信号に基づ
きコンバータ２２のスイッチングデューティを制御し、
蓄電池５への充電電流を一定値に制御する充電電流制御
手段２６、コンバータ２２の出力電圧を検出する供給電
圧検出手段２７、負荷電流検出手段２３からの信号に基
づきケーブル組３における電圧降下分を補正する信号を
発生する電圧降下補正手段２８、電源スイッチ４２のオ
ン時に供給電圧検出手段２７及び電圧降下補正手段２８
によりコンバータ２２のスイッチングデューティを制御
し、モータ４１への供給電圧を一定値に制御する駆動電
圧制御手段２９、蓄電池５の電池電圧を検出する電池電
圧検出手段２Ａ、コンバータ２２のオンオフ動作を制御
するコンバータ動作制御手段２Ｂ、負荷電流検出手段２
３とスイッチ動作検出手段２４の信号に基づきスイッチ
切換手段２５とコンバータ動作制御手段２Ｂを制御する
と共に電池電圧検出手段２Ａの信号に基づいて蓄電池５
の満充電を検出判別してコンバータ動作制御手段２Ｂを
制御するシングルチップマイコン（以下マイコンとい
う）２Ｃから構成される。本体２には蓄電池５が挿入さ
れる挿入口２Ｅが設けられている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing one embodiment. As shown in FIG. 3, the DC power supply device with a charging function according to the present invention includes a cord set 1, a main body 2, and a cable set 3. The cord set 1 includes an input cable 12 having a plug 11 connected at one end to a commercial AC power supply.
Consists of As shown in FIG. 1, the main body 2 includes a rectifying / smoothing means 21 for rectifying and smoothing a commercial AC power supply, a DC-DC converter (hereinafter simply referred to as a converter) 22, a motor 41 of the cordless tool 4, or a load for detecting a current flowing through the storage battery 5. Current detection means 23, switch operation detection means 24 for detecting the on / off state of power switch 42, power switch 42
The operation of the cordless tool 4 is detected by discriminating the on / off state of the battery. When the power switch 42 is turned off, the storage battery 5 is charged. When the power switch 42 is turned on, the storage battery 5 is charged.
Switching means 25 for stopping charging of the battery and supplying power only to cordless tool 4, power switch 4
2, when the switching duty of the converter 22 is controlled based on the signal from the load current detecting means 23,
Based on signals from the charging current control means 26 for controlling the charging current to the storage battery 5 to a constant value, the supply voltage detecting means 27 for detecting the output voltage of the converter 22 and the load current detecting means 23, the voltage drop in the cable set 3 is determined. Voltage drop correcting means 28 for generating a signal to be corrected, supply voltage detecting means 27 when power switch 42 is turned on, and voltage drop correcting means 28
The switching duty of the converter 22 is controlled by the driving voltage control means 29 for controlling the supply voltage to the motor 41 to a constant value, the battery voltage detecting means 2A for detecting the battery voltage of the storage battery 5, and the on / off operation of the converter 22. Converter operation control means 2B, load current detection means 2
3 and the switch operation detecting means 24 to control the switch switching means 25 and the converter operation control means 2B, and to control the storage battery 5 based on the signal from the battery voltage detecting means 2A.
And a single-chip microcomputer (hereinafter referred to as a microcomputer) 2C for detecting and judging the full charge of the battery and controlling the converter operation control means 2B. The main body 2 is provided with an insertion port 2E into which the storage battery 5 is inserted.
【０００８】スイッチ動作検出手段２４は、図２に示す
如く、ダイオード２４１〜２４３、抵抗２４４、２４
５、コンパレータ２４６からなり、スイッチ切換手段２
５のスイッチ２５２によりコンバータ２２の出力端が蓄
電池５側に接続されている時、電源スイッチ４２がオン
するのを検出するものである。具体的には、電源スイッ
チ４２がオフの時は電圧Vref1がダイオード２４１、抵
抗２４４、２４５を介してコンパレータ２４６に入力す
るので、コンパレータ２４６の出力は論理値１となる。
ここで、Vref1＞Vref2である。電源スイッチ４２がオン
の時は電圧Vref1をダイオード２４１、抵抗２４４、電
源スイッチ４２、モータ４１の直流抵抗で分圧した電圧
がコンパレータ２４６に入力する。モータ４１の直流抵
抗は抵抗２４４に比べ非常に小さい（数オーム程度）の
で、コンパレータ２４６の入力電圧はほぼ０Ｖで、コン
パレータ２４６の出力は論理値０となり、これにより電
源スイッチ４２がオンされたと判別する。電源スイッチ
４２のオン検出により、スイッチ２５２はコンバータ２
２の出力をコードレス工具４側に接続する。この状態
で、電源スイッチ４２のオフの検出は負荷電流検出手段
２３により行う。すなわち、電流が零の時電源スイッチ
４２がオフしたと判別する。As shown in FIG. 2, the switch operation detecting means 24 comprises diodes 241 to 243, resistors 244 and 24.
5, a switch 246 comprising a comparator 246
When the output terminal of the converter 22 is connected to the storage battery 5 by the switch 252 of No. 5, the power supply switch 42 is detected to be turned on. Specifically, when the power switch 42 is off, the voltage Vref1 is input to the comparator 246 via the diode 241 and the resistors 244 and 245, so that the output of the comparator 246 has the logical value 1.
Here, Vref1> Vref2. When the power switch 42 is on, a voltage obtained by dividing the voltage Vref 1 by the diode 241, the resistor 244, the power switch 42, and the DC resistance of the motor 41 is input to the comparator 246. Since the DC resistance of the motor 41 is very small (about several ohms) compared to the resistance 244, the input voltage of the comparator 246 is almost 0 V, and the output of the comparator 246 has a logical value of 0, thereby determining that the power switch 42 is turned on. I do. By detecting the ON of the power switch 42, the switch 252 switches the converter 2
2 is connected to the cordless tool 4 side. In this state, the off detection of the power switch 42 is performed by the load current detecting means 23. That is, it is determined that the power switch 42 has been turned off when the current is zero.
【０００９】スイッチ切換手段２５は、例えば電磁リレ
ーコイルからなる切換信号発生手段２５１及びスイッチ
２５２、２５３からなる。マイコン２Ｃは、周知の如
く、演算部のＭＣＵ、メモリ部のＲＯＭとＲＡＭ、タイ
マ部、入出力部のＡ／Ｄコンバータ、入力ポートと出力
ポート等からなる。The switch switching means 25 comprises switching signal generating means 251 comprising, for example, an electromagnetic relay coil, and switches 252 and 253. As is well known, the microcomputer 2C includes an MCU of an arithmetic unit, a ROM and a RAM of a memory unit, a timer unit, an A / D converter of an input / output unit, an input port and an output port, and the like.
【００１０】ケーブル組３は、一端にコードレス工具４
に接続するアダプタプラグ３１を、他端に本体２に接続
するコネクタ３２を設けた出力ケーブル３３からなる。
アダプタプラグ３１は、上部が蓄電池５の嵌合部と同じ
形状をしており、コードレス工具４に着脱可能となって
いる。The cable set 3 has a cordless tool 4 at one end.
And an output cable 33 having a connector 32 connected to the main body 2 at the other end.
The upper part of the adapter plug 31 has the same shape as the fitting part of the storage battery 5, and is detachable from the cordless tool 4.
【００１１】次に本発明装置の動作を説明する。コード
組１のプラグ１１を商用交流電源に接続すると、コンバ
ータ動作制御手段２Ｂのオフ信号によりコンバータ２２
をオフし（ステップ１０１）、スイッチ切換手段２５
は、スイッチ２５２を蓄電池５側に、スイッチ２５３を
充電電流制御手段２６側に切換え（ステップ１０２）、
マイコン２ＣのＲＡＭエリアの充電完了フラグをリセッ
ト（ステップ１０３）するイニシャルセットを行う。続
いて電源スイッチ４２がオン状態かオフ状態かをスイッ
チ動作検出手段２４からの信号により判別する（ステッ
プ１０４）。電源スイッチ４２がオフしている時は、蓄
電池５が本体２の蓄電池挿入口２Ｅに挿入されているか
を判別する（ステップ１０５）。蓄電池５が挿入されて
いない時は再びステップ１０４に戻る。Next, the operation of the apparatus of the present invention will be described. When the plug 11 of the cord set 1 is connected to the commercial AC power supply, the converter 22
Is turned off (step 101), and the switch switching means 25 is turned off.
Switches the switch 252 to the storage battery 5 side and the switch 253 to the charging current control means 26 side (step 102).
An initial setting for resetting the charge completion flag in the RAM area of the microcomputer 2C (step 103) is performed. Subsequently, whether the power switch 42 is on or off is determined based on a signal from the switch operation detecting means 24 (step 104). When the power switch 42 is off, it is determined whether the storage battery 5 is inserted into the storage battery insertion slot 2E of the main body 2 (step 105). When the storage battery 5 is not inserted, the process returns to step 104 again.
【００１２】蓄電池５が挿入されている時（充電モ−ド
の時）は、マイコン２ＣのＲＡＭエリアの充電完了フラ
グがリセットされているかを判別する（ステップ１１
１）。充電完了フラグがリセットされていない時は蓄電
池５が満充電の状態にあると判断し、蓄電池５を充電せ
ずステップ１１６に進む。充電完了フラグがリセットさ
れている時は、コンバータ動作制御手段２Ｂのオン信号
によりコンバータ２２をオンし、蓄電池５の充電を開始
する（ステップ１１２）。充電は周知の定電流制御によ
る一定充電電流により行われる。すなわち、負荷電流検
出手段２３からの信号を充電電流制御手段２６にフィー
ドバックし、充電電流制御手段２６内部で設定される充
電電流値と比較増幅し、その出力をコンバータ手段２２
に入力することにより、充電電流を一定に保つ。具体的
には、蓄電池５に流れる充電電流が設定充電電流値より
小さい時はコンバータ手段２２で行っているPWM制御の
デューティ比を大きくし、蓄電池５に流れる充電電流が
設定充電電流値より大きい時はPWM制御のデューティ比
を小さくすることにより、充電電流を一定に保つ。When the storage battery 5 is inserted (in the charging mode), it is determined whether the charging completion flag in the RAM area of the microcomputer 2C has been reset (step 11).
1). When the charge completion flag is not reset, it is determined that the storage battery 5 is fully charged, and the process proceeds to step 116 without charging the storage battery 5. When the charging completion flag is reset, the converter 22 is turned on by the on signal of the converter operation control means 2B, and charging of the storage battery 5 is started (step 112). Charging is performed by a constant charging current by well-known constant current control. That is, a signal from the load current detecting means 23 is fed back to the charging current control means 26, and is compared and amplified with a charging current value set in the charging current control means 26.
, The charging current is kept constant. Specifically, when the charging current flowing through the storage battery 5 is smaller than the set charging current value, the duty ratio of the PWM control performed by the converter 22 is increased, and when the charging current flowing through the storage battery 5 is larger than the set charging current value. Keeps the charging current constant by reducing the duty ratio of the PWM control.
【００１３】続いて、電池電圧検出手段２Ａから電池電
圧を検出することにより蓄電池５の満充電の判別を行う
（ステップ１１３）。蓄電池５の満充電の判別は電池電
圧を電池電圧検出手段２Ａを介してマイコン２Ｃに入力
することにより行う。満充電の検出としてはピーク値検
出、−ΔV検出等がある。なお満充電判別の方法は、周
知の如く、電池電圧検出の他、電池温度の検出あるいは
電池電圧、電池温度の両方を検出して判別する等種々あ
り、任意に選択することができる。Subsequently, the battery voltage is detected by the battery voltage detecting means 2A to determine whether the storage battery 5 is fully charged (step 113). The determination of the full charge of the storage battery 5 is performed by inputting the battery voltage to the microcomputer 2C via the battery voltage detecting means 2A. Full charge detection includes peak value detection, -ΔV detection, and the like. As is well known, there are various methods for determining the full charge, such as battery voltage detection, battery temperature detection, or both battery voltage and battery temperature detection and determination, and can be arbitrarily selected.
【００１４】満充電を検出したらコンバータ動作制御手
段２Ｂのオフ信号によりコンバータ２２をオフして蓄電
池５の充電を停止し（ステップ１１４）、マイコン２Ｃ
のＲＡＭエリアに蓄電池５が満充電であることを記憶す
るために充電完了フラグをセットし（ステップ１１
５）、本体２から蓄電池５が取り出されたかを判別する
（ステップ１１６）。蓄電池５が取り出されたのを判別
したら、充電完了フラグをリセットし（ステップ１１
７）、ステップ１０４に戻る。蓄電池５が本体に挿入さ
れている時は、電源スイッチ４２がオン状態かオフ状態
かを判別し（ステップ１１８）、電源スイッチ４２がオ
フしている時はステップ１１６に戻り、電源スイッチ４
２がオンしている時はステップ１３１に進む。When the full charge is detected, the converter 22 is turned off by the off signal of the converter operation control means 2B to stop charging the storage battery 5 (step 114), and the microcomputer 2C
A charge completion flag is set in the RAM area of the storage device to store that the storage battery 5 is fully charged (step 11).
5) It is determined whether the storage battery 5 has been removed from the main body 2 (step 116). When it is determined that the storage battery 5 has been removed, the charging completion flag is reset (step 11).
7) Return to step 104. When the storage battery 5 is inserted into the main body, it is determined whether the power switch 42 is on or off (step 118). When the power switch 42 is off, the process returns to step 116, and the power switch 4
When 2 is on, the routine proceeds to step 131.
【００１５】ステップ１１３で満充電でない時は、蓄電
池５が本体２に挿入されているかを判別（ステップ１１
９）し、蓄電池５が取り出されたのを判別したらコンバ
ータ動作制御手段２Ｂのオフ信号によりコンバータ２２
をオフし（ステップ１２０）てステップ１０４に戻り、
蓄電池５が本体２に挿入されている時は、電源スイッチ
４２がオン状態かオフ状態かを判別し（ステップ１２
１）、電源スイッチ４２がオフしている時は再度ステッ
プ１１３に戻り、電源スイッチ４２がオンしている時は
ステップ１３１に進む。If the battery is not fully charged in step 113, it is determined whether the storage battery 5 is inserted into the main body 2 (step 11).
9) Then, when it is determined that the storage battery 5 is removed, the converter 22 is turned off by the off signal of the converter operation control means 2B.
Is turned off (step 120), and the process returns to step 104.
When the storage battery 5 is inserted into the main body 2, it is determined whether the power switch 42 is on or off (step 12).
1) When the power switch 42 is off, the process returns to step 113 again; when the power switch 42 is on, the process proceeds to step 131.
【００１６】ステップ１０４で電源スイッチ４２がオン
している時（コ−ドレス工具駆動モードの時）は、コン
バータ動作制御手段２Ｂのオフ信号によりコンバータ２
２をオフし（ステップ１３１）、スイッチ２５２をコー
ドレス工具４側に、スイッチ２５３を駆動電圧制御手段
２９側にし（ステップ１３２）、コンバータ動作制御手
段２Ｂのオン信号によりコンバータ２２をオンする（ス
テップ１３３）。続いて、電源スイッチ４２がオフされ
たかを判別するために負荷電流が零かどうかを判別する
（ステップ１３４）。負荷電流が零ならばコンバータ動
作制御手段２Ｂのオフ信号によりコンバータ２２をオフ
し（ステップ１３５）、スイッチ２５２を蓄電池５側
に、スイッチ２５３を充電電流制御手段２６側にして
（ステップ１３６）ステップ１０４に戻る。負荷電流が
零でないなら本体２から蓄電池５が取り出されるか判別
する（ステップ１３７）。蓄電池５が取り出されたのを
判別したら、充電完了フラグをリセットし（ステップ１
３８）てステップ１３４に戻り、蓄電池５が本体に挿入
されている時はステップ１３４に戻る。When the power switch 42 is turned on in step 104 (during the cordless tool driving mode), the converter 2 is controlled by the off signal of the converter operation control means 2B.
2 is turned off (step 131), the switch 252 is set to the cordless tool 4 side, the switch 253 is set to the drive voltage control means 29 side (step 132), and the converter 22 is turned on by the on signal of the converter operation control means 2B (step 133). ). Subsequently, it is determined whether the load current is zero to determine whether the power switch 42 has been turned off (step 134). If the load current is zero, the converter 22 is turned off by the off signal of the converter operation control means 2B (step 135), and the switch 252 is set to the storage battery 5 side, and the switch 253 is set to the charging current control means 26 side (step 136). Return to If the load current is not zero, it is determined whether the storage battery 5 is taken out of the main body 2 (step 137). When it is determined that the storage battery 5 has been removed, the charging completion flag is reset (step 1).
38) Then, the process returns to step 134. When the storage battery 5 is inserted into the main body, the process returns to step 134.
【００１７】前記ステップ１３７、１３８をないと、充
電モードで満充電となった蓄電池５が本体２に挿入され
た状態で工具駆動モードに移り、この工具駆動モード中
に蓄電池５が外された後に充電モードに移った場合、次
の蓄電池５が挿入されたとしても、充電完了フラグがセ
ットされたままであるので充電が開始されないという問
題がある。ステップ１３７、１３８はこれらの問題が生
じないようにするために設けられた。If steps 137 and 138 are not performed, the storage battery 5 that is fully charged in the charging mode is shifted to the tool driving mode with the storage battery 5 being inserted into the main body 2, and after the storage battery 5 is removed during the tool driving mode. When the mode is shifted to the charging mode, there is a problem that even if the next storage battery 5 is inserted, the charging is not started because the charging completion flag is still set. Steps 137 and 138 are provided to prevent these problems from occurring.
【００１８】[0018]
【発明の効果】本発明によれば、コードレス工具の駆動
時には必ず充電を停止するようにしたので、直流電源の
最大能力を全てコードレス工具に供給でき、コードレス
工具の駆動が停止している時は蓄電池を短時間で充電で
きる。また、コードレス工具の駆動及び蓄電池の充電を
別々に行うようにしたので、コードレス工具の駆動電圧
と異なる電圧の蓄電池にストレスをかけることなく充電
できる。According to the present invention, charging is always stopped when the cordless tool is driven, so that the maximum capacity of the DC power supply can be supplied to the cordless tool, and when the driving of the cordless tool is stopped. The storage battery can be charged in a short time. Further, since the driving of the cordless tool and the charging of the storage battery are performed separately, the storage battery having a voltage different from the driving voltage of the cordless tool can be charged without applying stress.
【図１】 本発明充電機能付き直流電源装置の一実施形
態を示すブロック図。FIG. 1 is a block diagram showing one embodiment of a DC power supply device with a charging function of the present invention.
【図２】 本発明を構成するスイッチ動作検出手段の一
実施形態を示す回路図。FIG. 2 is a circuit diagram showing one embodiment of a switch operation detecting means constituting the present invention.
【図３】 本発明装置の一実施形態例を示す斜視図であ
る。FIG. 3 is a perspective view showing an embodiment of the device of the present invention.
【図４】 本発明装置の一実施形態を示すフローチャー
トである。FIG. 4 is a flowchart showing an embodiment of the device of the present invention.
２１は整流平滑手段、２２はＤＣ−ＤＣコンバータ、２
３は負荷電流検出手段、２４はスイッチ動作検出手段、
２５はスイッチ切換手段、２Cはマイコン、４はコード
レス工具、４１はモータ、４２は電源スイッチ、５は蓄
電池である。21 is a rectifying / smoothing means, 22 is a DC-DC converter, 2
3 is a load current detecting means, 24 is a switch operation detecting means,
25 is a switch switching means, 2C is a microcomputer, 4 is a cordless tool, 41 is a motor, 42 is a power switch, and 5 is a storage battery.
Claims (2)
により駆動されるコードレス工具と、入力された交流を
直流に変換して出力し、充電される蓄電池が挿入される
蓄電池挿入口を有する直流電源装置本体と、蓄電池の工
具挿入部と同一形状の挿入部を有し、直流電源装置本体
の出力によりコードレス工具を駆動するアダプタとを備
え、コードレス工具を蓄電池またはアダプタを介して直
流電源装置本体により選択的に駆動するようにした充電
機能付き直流電源装置であって、 電源スイッチのオンオフ状態を検出するスイッチ動作検
出手段及び直流電源装置本体の出力をアダプタまたは蓄
電池挿入口に選択的に供給するためのスイッチ切換手段
とを直流電源装置本体に設け、電源スイッチのオフ時に
直流電源装置本体の出力を蓄電池挿入口に供給して蓄電
池を充電し、電源スイッチのオン時に直流電源装置本体
の出力をアダプタに供給してコードレス工具を駆動する
ようにしたことを特徴とする充電機能付き直流電源装
置。1. A cordless tool having a power switch and driven by a detachable storage battery, and a direct current having a storage battery insertion opening into which a charged storage battery is inserted by converting an input alternating current into a direct current and outputting the converted direct current. A power supply device main body and an adapter having an insertion portion having the same shape as the storage battery tool insertion portion, and an adapter for driving a cordless tool by an output of the DC power supply device main body. DC power supply device having a charging function selectively driven by a switch, wherein switch operation detection means for detecting an on / off state of a power switch and an output of the DC power supply main body are selectively supplied to an adapter or a storage battery insertion port. Switching means for providing the output of the DC power supply main body when the power switch is turned off. Supply to charge the battery, charging function DC power supply device being characterized in that so as to drive the cordless tool by supplying the output of the DC power supply device main body to the adapter during on of the power switch.
を検出する負荷電流検出手段を設け、電源スイッチがオ
ンで前記出力電流がない時、前記スイッチ切換手段を介
して直流電源装置本体の出力を蓄電池挿入口に供給する
ようにしたことを特徴とする請求項１記載の充電機能付
き直流電源装置。And a load current detecting means for detecting the presence or absence of an output current of the DC power supply main body. When a power switch is turned on and there is no output current, an output of the DC power supply main body is output via the switch switching means. 2. The DC power supply device with a charging function according to claim 1, wherein the power supply is supplied to the storage battery insertion opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35223098A JP3674349B2 (en) | 1998-12-11 | 1998-12-11 | DC power supply with charging function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35223098A JP3674349B2 (en) | 1998-12-11 | 1998-12-11 | DC power supply with charging function |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004217664A Division JP2004350498A (en) | 2004-07-26 | 2004-07-26 | Direct-current power supply with charging function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000184614A true JP2000184614A (en) | 2000-06-30 |
| JP3674349B2 JP3674349B2 (en) | 2005-07-20 |
Family
ID=18422656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35223098A Expired - Fee Related JP3674349B2 (en) | 1998-12-11 | 1998-12-11 | DC power supply with charging function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3674349B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002315217A (en) * | 2001-04-10 | 2002-10-25 | Hitachi Koki Co Ltd | Dc power source apparatus with charging function |
| US6566843B2 (en) | 2001-04-10 | 2003-05-20 | Hitachi Koki Co., Ltd. | DC power source unit with battery charging function |
| US6683439B2 (en) | 2001-05-25 | 2004-01-27 | Hitachi Koki Co., Ltd. | DC power source unit with battery charging function |
| JP2004229450A (en) * | 2003-01-24 | 2004-08-12 | Canon Inc | Charging equipment |
| JP2004282895A (en) * | 2003-03-14 | 2004-10-07 | Hitachi Koki Co Ltd | Direct-current power supply unit provided with charging function |
| US7145314B2 (en) | 2003-05-23 | 2006-12-05 | Hitachi Koki Co., Ltd. | DC power source unit with battery charging function |
| JP3860035B2 (en) * | 2000-04-13 | 2006-12-20 | 株式会社マキタ | Adapter for charging device |
| US7196911B2 (en) | 2003-07-18 | 2007-03-27 | Hitachi Koki Co., Ltd. | DC power source unit with battery charging function |
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| WO2009100673A1 (en) * | 2008-02-03 | 2009-08-20 | Weiliang Jiang | A portable electric tool, cordless tool, gardening tool, carpenter's tool |
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1998
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| JP3860035B2 (en) * | 2000-04-13 | 2006-12-20 | 株式会社マキタ | Adapter for charging device |
| US6566843B2 (en) | 2001-04-10 | 2003-05-20 | Hitachi Koki Co., Ltd. | DC power source unit with battery charging function |
| JP2002315217A (en) * | 2001-04-10 | 2002-10-25 | Hitachi Koki Co Ltd | Dc power source apparatus with charging function |
| CN1326307C (en) * | 2001-04-10 | 2007-07-11 | 日立工机株式会社 | DC power supply unit with cell-charging function |
| CN100367629C (en) * | 2001-05-25 | 2008-02-06 | 日立工机株式会社 | DC power source unit with battery charging function |
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| US7554293B2 (en) | 2003-01-24 | 2009-06-30 | Canon Kabushiki Kaisha | Electric charging apparatus, electronic apparatus, residual battery capacity detection method and battery residual capacity display control method |
| US7449861B2 (en) | 2003-01-24 | 2008-11-11 | Canon Kabushiki Kaisha | Electric charging apparatus, electronic apparatus and electric charging control method |
| JP2004282895A (en) * | 2003-03-14 | 2004-10-07 | Hitachi Koki Co Ltd | Direct-current power supply unit provided with charging function |
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| JP2014045538A (en) * | 2012-08-24 | 2014-03-13 | Makita Corp | Charging type fan device |
| CN102904325A (en) * | 2012-10-31 | 2013-01-30 | 北京小米科技有限责任公司 | Integrated charger of mobile terminal and method for charging mobile terminal |
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