JP2991442B2 - Power supply - Google Patents
Power supplyInfo
- Publication number
- JP2991442B2 JP2991442B2 JP1194892A JP19489289A JP2991442B2 JP 2991442 B2 JP2991442 B2 JP 2991442B2 JP 1194892 A JP1194892 A JP 1194892A JP 19489289 A JP19489289 A JP 19489289A JP 2991442 B2 JP2991442 B2 JP 2991442B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- charging
- power supply
- secondary battery
- circuit
- 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、二次電池からの直流電源出力を電源電力に
用いる電源装置の改良に関する。Description: TECHNICAL FIELD The present invention relates to an improvement in a power supply device that uses a DC power supply output from a secondary battery as power supply power.
（従来の技術） 従来から、電子スチルカメラには、銀塩カメラと較べ
て消費電流が大きくかつ電圧安定度が良好であることを
要求されるため、その電源装置には内部抵抗の小さいニ
ッカド電池、鉛電池等の二次電池を用い、この二次電池
に充電を行なって繰り返し用いるようにしたものがあ
る。(Prior Art) Conventionally, electronic still cameras have been required to consume a large amount of current and have good voltage stability as compared with silver halide cameras. In some cases, a secondary battery such as a lead battery is used, and the secondary battery is charged and used repeatedly.
第４図は二次電池としてのニッカド電池と一次電池と
しての乾電池との放電電圧特性の比較図であり、ニッカ
ド電池の放電電圧特性は実線で示すように放電時間に対
してきわめて平坦な特性を示しているが、乾電池の放電
電圧特性は破線で示すように放電時間に対してニッカド
電池のそれよりも減少傾向が大きい。また、ニッカド電
池は内部抵抗が小さい。このため、ニッカド電池等の二
次電池は瞬時に大電流を取り出したとしても放電電圧の
低下はわずかであるという特徴があり、間欠的にかつ瞬
時に大電流を要求される電子スチルカメラの電源に好ま
しいのである。FIG. 4 is a comparison diagram of the discharge voltage characteristics of a nickel cadmium battery as a secondary battery and a dry battery as a primary battery. The discharge voltage characteristics of the nickel cadmium battery are extremely flat with respect to the discharge time as shown by the solid line. As shown in the figure, the discharge voltage characteristic of the dry battery has a greater tendency to decrease with respect to the discharge time than that of the NiCd battery as indicated by the broken line. Nicad batteries have low internal resistance. For this reason, a secondary battery such as a nickel-cadmium battery is characterized in that even if a large current is taken out instantaneously, the discharge voltage drops only slightly. It is preferred.
（発明が解決しようとする課題） ところが、この種の二次電池は自己放電が大きい。ま
た、充電が面倒であるという問題がある。さらに、特に
小型の電子機器の電源として用いる場合、小型化のため
に、その容量は制限されてしまう。例えば電子スチルカ
メラの場合、記録媒体である磁気ディスク数枚程度（磁
気ディスク１枚あたり25〜50コマ撮影可能）であり、商
用交流電源出力を直流電源出力に変換して用いる形式の
電源装置（アダプター）を使用することができない屋外
で撮影を行なう場合、不便である。この二次電池の容量
を大きくすれば、撮像できる枚数を増やすことができる
が、そうすると、二次電池が大型となり、ひいては、電
源装置が大型となるという問題がある。また、充電それ
自体も面倒であるという問題がある。(Problems to be Solved by the Invention) However, this type of secondary battery has a large self-discharge. Another problem is that charging is troublesome. Furthermore, particularly when used as a power source for a small electronic device, its capacity is limited due to the miniaturization. For example, in the case of an electronic still camera, the number of magnetic disks serving as recording media is about several (capable of shooting 25 to 50 frames per magnetic disk), and a power supply device that converts commercial AC power output into DC power output and uses it is used. This is inconvenient when shooting outdoors where the adapter cannot be used. If the capacity of the secondary battery is increased, the number of images that can be imaged can be increased. However, in this case, there is a problem that the secondary battery becomes large and the power supply device becomes large. In addition, there is a problem that charging itself is troublesome.
本発明に係わる電源装置は上記の事情に鑑みて為され
たもので、その目的とするところは、充電が容易でかつ
電源装置の小型化を図ることのできる電源装置を提供す
ることにある。A power supply device according to the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a power supply device that can be easily charged and can be downsized.
（課題を解決するための手段） 本願請求項１の発明に係わる電源装置は、上記の目的
を達成するため、直流電源出力を各電子回路部品に供給
する内蔵型の二次電池のみに充電回路を通して充電電流
を供給する交換可能な一次電池を、前記一次電池と前記
二次電池との間に設けられたオン・オフスイッチを介し
て該二次電池に接続する一方、前記直流電源出力の電圧
を検出する電圧検出回路を前記二次電池の出力側に接続
し、前記充電回路は前記二次電池に短時間で急速に充電
を行う急速充電回路と前記二次電池に前記急速充電回路
による充電時間よりも長い時間をかけて充電を行う通常
充電回路とから構成され、前記電圧検出回路は充電を要
求する電圧に関係して設定された充電要求基準電圧より
も低い急速充電要求電圧と前記直流電源出力の電圧とを
比較して、前記直流電源出力の電圧が前記急速充電要求
基準電圧よりも低いときに前記急速充電回路を通して前
記二次電池が充電されるように前記オン・オフスイッチ
を制御し、かつ、前記直流電源出力の電圧が前記急速充
電要求基準電圧よりも高くて前記充電要求基準電圧より
も低いときに前記通常充電回路を通して前記二次電池が
充電されるように前記オン・オフスイッチを制御し、し
かも、前記直流電源出力の電圧が前記充電要求基準電圧
よりも高いときには前記オン・オフスイッチがオフする
ように前記オン・オフスイッチを制御することを特徴と
する。(Means for Solving the Problems) In order to achieve the above object, a power supply device according to the invention of claim 1 of the present application provides a charging circuit for only a built-in secondary battery that supplies a DC power output to each electronic circuit component. A replaceable primary battery that supplies a charging current through the secondary battery is connected to the secondary battery via an on / off switch provided between the primary battery and the secondary battery, while the voltage of the DC power output is Is connected to the output side of the secondary battery, and the charging circuit charges the secondary battery rapidly in a short time and charges the secondary battery by the quick charging circuit. And a normal charging circuit that performs charging over a longer time than the time, wherein the voltage detection circuit is connected to the quick charging request voltage lower than a charging request reference voltage set in relation to the voltage required for charging and the DC voltage. Power output Controlling the on / off switch so that the secondary battery is charged through the quick charge circuit when the voltage of the DC power supply output is lower than the quick charge request reference voltage, And, when the voltage of the DC power supply output is higher than the quick charge request reference voltage and lower than the charge request reference voltage, the on / off switch is turned on and off so that the secondary battery is charged through the normal charging circuit. And controlling the on / off switch so that the on / off switch is turned off when the voltage of the DC power supply output is higher than the charge request reference voltage.
本願請求項２の発明に係わる電源装置は、上記の目的
を達成するため、直流電源出力を各電子回路部品に供給
する二次電池のみに充電回路を通して充電電流を供給す
る一次電池を、前記一次電池と前記二次電池との間に設
けられたオン・オフスイッチを介して該二次電池に接続
する一方、前記直流電源出力の電圧を検出する電圧検出
回路を前記二次電池の出力側に接続し、 前記充電回路は前記二次電池に短時間で急速に充電を
行う急速充電回路と前記二次電池に前記急速充電回路に
よる充電時間よりも長い時間をかけて充電を行う通常充
電回路とから構成され、 前記電圧検出回路は充電を要求する電圧に関係して設
定された充電要求基準電圧よりも低い急速充電要求電圧
と前記直流電源出力の電圧とを比較して、前記直流電源
出力の電圧が前記急速充電要求基準電圧よりも低いとき
に前記急速充電回路を通して前記二次電池が充電される
ように前記オン・オフスイッチを制御し、かつ、前記直
流電源出力の電圧が前記急速充電要求基準電圧よりも高
くて前記充電要求基準電圧よりも低いときに前記通常充
電回路を通して前記二次電池が充電されるように前記オ
ン・オフスイッチを制御し、しかも、前記電圧検出回路
は、前記直流電源出力の電圧が前記充電要求基準電圧よ
りも高いときには前記オン・オフスイッチがオフするよ
うに前記オン・オフスイッチを制御し、また、前記電圧
検出回路は、前記各電子回路部品が動作不能となる前記
直流電源出力の電圧に関係して設定された動作不能対応
基準電圧と前記直流電源出力の電圧とを比較して該直流
電源出力の電圧が前記直流電源出力よりも低いときに
は、前記二次電池と該動作不能対応基準電圧との間に設
けられた直流電源出力供給停止スイッチが前記直流電源
出力の供給をオフにするように制御することを特徴とす
る。In order to achieve the above object, a power supply device according to a second aspect of the present invention includes a primary battery that supplies a charging current through a charging circuit to only a secondary battery that supplies a DC power output to each electronic circuit component. While connected to the secondary battery via an on / off switch provided between the battery and the secondary battery, a voltage detection circuit for detecting the voltage of the DC power output is provided on the output side of the secondary battery. Connected, the charging circuit is a quick charging circuit for rapidly charging the secondary battery in a short time and a normal charging circuit for charging the secondary battery over a longer time than the charging time by the quick charging circuit. The voltage detection circuit is configured to compare a quick charge request voltage lower than a charge request reference voltage set in relation to a voltage requesting charging with a voltage of the DC power supply output, and output the DC power supply output. Voltage The on / off switch is controlled so that the secondary battery is charged through the quick charging circuit when the voltage is lower than the quick charging request reference voltage, and the voltage of the DC power supply output is the quick charging request reference voltage. The on / off switch is controlled so that the secondary battery is charged through the normal charging circuit when the voltage is higher than the charging request reference voltage and the voltage detection circuit is configured to output the DC power supply output. When the voltage is higher than the charge request reference voltage, the on / off switch is controlled so that the on / off switch is turned off, and the voltage detection circuit is configured to disable the electronic circuit components. The inoperable reference voltage set in relation to the voltage of the DC power supply output is compared with the DC power supply output voltage, and the DC power supply output voltage is compared with the DC power supply output voltage. When the power is lower than the power, a DC power supply output stop switch provided between the secondary battery and the inoperable reference voltage controls the supply of the DC power output to be turned off. .
（実施例） 以下に、本発明に係わる電源装置を図面を参照しつつ
説明する。Hereinafter, a power supply device according to the present invention will be described with reference to the drawings.
第１図は本発明に係わる電源装置を電子スチルカメラ
に適用した第１実施例を示すもので、この第１図におい
て、１は電子スチルカメラの電源装置、２は商用交流出
力を直流電源出力に変換する外部電源装置である。外部
電源装置２はラインフィルター３を有する。このライン
フィルター３により、商用交流入力からの侵入ノイズお
よび電源内部で発生する帰還ノイズを除去し、一次整流
平滑部４に導いてダイオード，コンデンサで入力を直に
整流平滑した脈流出力とし、インバータ部５でスイッチ
ング素子により高周波のパルス状交流電力に変換され
る。二次整流平滑部６の出力側には商用交流出力に基づ
く直流電源出力が安定に供給されるように、フィードバ
ック回路７が設けられている。このフィードバック回路
７は抵抗器８と抵抗器９とからなる分圧回路10を有す
る。この分圧回路10の分圧電圧は制御電圧Ｅとしてフィ
ードバック回路７の一部を構成する比較回路11に入力さ
れている。FIG. 1 shows a first embodiment in which a power supply device according to the present invention is applied to an electronic still camera. In FIG. 1, reference numeral 1 denotes a power supply device for an electronic still camera, and 2 denotes a commercial AC output to a DC power output. Is an external power supply that converts the The external power supply 2 has a line filter 3. The line filter 3 removes intrusion noise from the commercial AC input and feedback noise generated inside the power supply, guides it to the primary rectifying / smoothing section 4 to directly rectify and smooth the input with a diode and a capacitor to form a pulsating output. In the section 5, the high frequency pulsed AC power is converted by the switching element. A feedback circuit 7 is provided on the output side of the secondary rectifying / smoothing unit 6 so as to stably supply a DC power output based on a commercial AC output. The feedback circuit 7 has a voltage dividing circuit 10 including a resistor 8 and a resistor 9. The divided voltage of the voltage dividing circuit 10 is input as a control voltage E to a comparing circuit 11 which forms a part of the feedback circuit 7.
比較回路11は基準電圧12とその制御電圧Ｅとを比較
し、その差分を増幅回路13に向かって出力する。この増
幅回路13の出力はオン・オフ制御回路14に入力される。
オン・オフ制御回路14はその増幅回路13の出力に基いて
その直流電源出力の電圧が所定の値よりも大きいときに
は小さくなるようにかつその直流電源出力の電圧が所定
の値よりも小さいときには大きくなるようにオン・オフ
時間を設定してインバータ部５を制御する。The comparison circuit 11 compares the reference voltage 12 with the control voltage E, and outputs the difference to the amplifier circuit 13. The output of the amplifier 13 is input to the on / off control circuit 14.
The on / off control circuit 14 is configured to decrease the voltage of the DC power supply output based on the output of the amplifier circuit 13 when the voltage of the DC power supply output is larger than a predetermined value, and increase the voltage when the voltage of the DC power supply output is smaller than the predetermined value. The on / off time is set so that the inverter unit 5 is controlled.
この外部電源装置２は電源コード15により電子スチル
カメラの電源装置１に接続される。電源装置１には切換
スイッチ16とヒューズ７′とが設けられている。切換ス
イッチ16は後述する電池電源回路による直流電源出力の
供給と外部電源装置２による直流電源出力の供給との間
で切り換える機能を有する。その直流電源出力は電子回
路構成部品としての定電圧電源回路17、スピンドルモー
ター18、トラッキングモーター19、ストロボ回路20に供
給されている。定電圧電源回路17はシステムコントロー
ル回路21、撮像回路22、映像信号処理回路23に定電圧を
供給する。なお、そのシステムコントロール回路21はス
ピンドルモーター18、トラッキングモーター19、ストロ
ボ回路20、撮像回路22、映像信号処理回路23等の他各種
の制御対象を制御する機能を有する。The external power supply 2 is connected to the power supply 1 of the electronic still camera by a power cord 15. The power supply device 1 is provided with a changeover switch 16 and a fuse 7 '. The changeover switch 16 has a function of switching between supply of a DC power supply output from a battery power supply circuit described later and supply of a DC power supply output from the external power supply device 2. The DC power supply output is supplied to a constant voltage power supply circuit 17, a spindle motor 18, a tracking motor 19, and a strobe circuit 20 as electronic circuit components. The constant voltage power supply circuit 17 supplies a constant voltage to the system control circuit 21, the imaging circuit 22, and the video signal processing circuit 23. Note that the system control circuit 21 has a function of controlling various other control targets such as the spindle motor 18, the tracking motor 19, the strobe circuit 20, the imaging circuit 22, and the video signal processing circuit 23.
切り換えスイッチ16はここでは機械的スイッチから構
成され、電源コード15により外部電源装置２と電子スチ
ルカメラの電源回路１とを接続すると、電池電源回路に
よる直流電源出力供給状態から外部電源装置２による直
流電源出力供給状態に切り替わるものであり、電源コー
ド15による外部電源装置２と電子スチルカメラの電源装
置１との接続を解除すると、外部電源装置２による直流
電源出力供給状態から電池電源回路による直流電源出力
供給状態に切り替わるものである。The changeover switch 16 is constituted by a mechanical switch here. When the external power supply 2 and the power supply circuit 1 of the electronic still camera are connected by the power supply cord 15, the DC power supply from the battery power supply circuit is changed to the DC power supply by the external power supply 2. When the connection between the external power supply 2 and the power supply 1 of the electronic still camera is released by the power cord 15, the DC power supply from the external power supply 2 is switched to the DC power supply by the battery power supply circuit. This switches to the output supply state.
電池電源回路は乾電池等の一次電池24とニッカド電池
等の二次電池25とを有する。その一次電池24はオン・オ
フスイッチ26と充電回路27とを介して二次電池25に接続
されている。二次電池25の出力側には直流電源出力供給
停止スイッチ28と二次電池25の直流電源出力の電圧Ｋ′
を検出する電圧検出回路29とが設けられている。電圧検
出回路29は電子スチルカメラが動作不能となる直流電源
出力の電圧Ｋ（第２図参照）に対応して定められた動作
不能対応基準電圧K1よりも二次電池25から出力される直
流電源出力の電圧Ｋ′が低くなったときは直流電源出力
供給停止スイッチ28をオフする機能を有すると共に、充
電を要求する電圧に関係して定められた充電要求基準電
圧K2よりも二次電池25から出力される直流電源出力Ｋ′
が低くなったときは、一次電池24から二次電池25に充電
電流の供給がされるように、オン・オフスイッチ26をオ
ンする制御を行い、その充電要求基準電圧K2よりも二次
電池25から出力される直流電源出力Ｋ′が高いときに
は、一次電池24から二次電池25への充電電流の供給が停
止されるようにオン・オフスイッチ26をオフする制御を
行なう。The battery power supply circuit has a primary battery 24 such as a dry battery and a secondary battery 25 such as a nickel-cadmium battery. The primary battery 24 is connected to a secondary battery 25 via an on / off switch 26 and a charging circuit 27. On the output side of the secondary battery 25, a DC power supply stop switch 28 and a DC power output voltage K 'of the secondary battery 25 are provided.
And a voltage detection circuit 29 for detecting the voltage. Voltage detecting circuit 29 is a DC output from the secondary battery 25 than the inoperative corresponding reference voltage K 1 determined corresponding to the voltage K of the DC power supply output by the electronic still camera inoperable (see FIG. 2) together when the voltage K of the power supply output 'is lower has a function of turning off the DC power output supply stop switch 28, a secondary battery than the charging request reference voltage K 2 defined in relation to the voltage required to charge DC power output K 'output from 25
When becomes lower, as is the supply of charging current from a battery 24 to the rechargeable battery 25, performs control to turn on the on-off switch 26, the secondary battery than the charging request reference voltage K 2 When the DC power output K ′ output from the power supply 25 is high, control is performed to turn off the on / off switch 26 so that the supply of the charging current from the primary battery 24 to the secondary battery 25 is stopped.
この実施例によれば、入手が容易でかつ自己放電の小
さい一次電池24を用いて二次電池25への充電を行なうこ
とができるので、二次電池25の容量を従来に較べて小さ
なものにしたとしても、従来と同等以上の直流電源出力
性能を確保できることになり、電子スチルカメラの電源
装置１の小型化を図ることができるほか、屋外でも一次
電池24の交換により電子スチルカメラを長時間使用する
ことができるという効果を奏することになる。さらに、
第４図に示すように、二次電池25に較べて一次電池24は
その放電電圧の変化が顕著であるので、残存容量の検出
が容易であり、従って、一次電池24の交換時期を容易に
検出し、一次電池24の消耗具合いを容易に表示できるこ
とになる。According to this embodiment, the secondary battery 25 can be charged using the primary battery 24 that is easily available and has a small self-discharge, so that the capacity of the secondary battery 25 can be reduced compared to the conventional one. Even if this is done, it is possible to secure a DC power output performance equal to or higher than that of the conventional one, and it is possible to reduce the size of the power supply device 1 of the electronic still camera. This has the effect of being usable. further,
As shown in FIG. 4, since the change in the discharge voltage of the primary battery 24 is more remarkable than that of the secondary battery 25, the remaining capacity can be easily detected, and therefore, the replacement time of the primary battery 24 can be easily determined. It is possible to detect and easily display the degree of consumption of the primary battery 24.
第３図は本発明に係わる電源装置を電子スチルカメラ
に適用した第２実施例を示し、充電回路27を二次電池25
に短時間で急速に充電を行なう急速充電回路30と二次電
池25に急速充電回路30による充電時間よりも長い時間を
かけて充電を行なう通常充電回路31とから構成する一
方、電圧検出回路29は充電要求基準電圧K2よりも低い急
速充電要求基準電圧K3と直流電源出力の電圧Ｋ′（第２
図参照）とを比較して、直流電源出力の電圧Ｋ′が急速
充電要求基準電圧K3よりも低いときに急速充電回路30を
通して二次電池25が充電されるようにオン・オフスイッ
チ26を制御し、直流電源出力の電圧Ｋ′が急速充電要求
基準電圧K3よりも高く充電要求基準電圧K2よりも低いと
きに通常充電回路31を通して二次電池25が充電されるよ
うにオン・オフスイッチ26を制御する構成としたもので
ある。FIG. 3 shows a second embodiment in which the power supply device according to the present invention is applied to an electronic still camera.
A fast charging circuit 30 for rapidly charging the secondary battery 25 in a short time and a normal charging circuit 31 for charging the rechargeable battery 25 over a longer time than the charging time by the quick charging circuit 30. charging request reference voltage lower quick charge request than K 2 is the reference voltage K 3 and the DC power supply output voltage K '(second
Compared to FIG references) and, an on-off switch 26 as fast charging circuit 30 through the secondary battery 25 is charged when voltage K of the DC power supply output 'is lower than the quick charge request reference voltage K 3 controlling, on and off as the secondary battery 25 through a conventional charging circuit 31 is charged when voltage K of the DC power supply output 'rapid charge request reference voltage lower than the high charging request reference voltage K 2 than K 3 In this configuration, the switch 26 is controlled.
このように構成すれば、電子スチルカメラが瞬間的に
大電流を必要とする場合でも、誤動作を起こすことなく
二次電池25の直流電源出力を確保できる。With this configuration, even when the electronic still camera needs a large current momentarily, the DC power output of the secondary battery 25 can be secured without causing a malfunction.
（発明の効果） 本発明に係わる電源装置は以上説明したように構成し
たので以下の効果を奏する。(Effects of the Invention) The power supply device according to the present invention has the following effects because it is configured as described above.
入手、交換が容易で、かつ、二次電池に較べて自己放
電が小さい一次電池を用いて二次電池の充電を行なうも
のであるので、充電が容易である効果を奏する。Since the secondary battery is charged using a primary battery which is easy to obtain and replace and has a smaller self-discharge than the secondary battery, the effect of easy charging is achieved.
一次電池は単位体積、単位面積当りの体積エネルギー
（たとえば、単三形のアルカリ電池の場合、2000mAh以
上）が二次電池よりも数倍大きい（たとえば、ニッカド
電池の場合、700mAh最大）ので、電源装置を従来に較べ
て小型にしたとしても従来と同等の電源供給性能を確保
することができる。Because the primary battery has a volume energy per unit area and unit area (for example, 2000 mAh or more for AA alkaline batteries) several times larger than the secondary battery (for example, 700 mAh maximum for NiCd batteries) Even if the device is made smaller than before, it is possible to secure the same power supply performance as before.
商用交流電源出力を用いることのできない屋外でも一
次電池を交換するのみで撮像枚数の向上を期待できる。Even when the commercial AC power supply output cannot be used, an improvement in the number of captured images can be expected only by replacing the primary battery even outdoors.
一次電池は効率のよい小電流領域で充電に用いるの
で、経済的である。The primary battery is economical because it is used for charging in an efficient small current region.
一次電池を用いて二次電池のみに給電を行い、二次
電池を用いて各電子回路部品への電源出力を供給する構
成であるので、一次電池を交換する際に取り外したとし
ても、各電子回路部品を動作させるのに充分な直流電源
出力が二次電池から供給され、各電子回路部品は一次電
池を取り外したとしても作動するという効果を奏する。The primary battery is used to supply power only to the secondary battery, and the secondary battery is used to supply power output to each electronic circuit component.Even if the primary battery is removed when replacing it, A DC power output sufficient to operate the circuit components is supplied from the secondary battery, and each electronic circuit component operates even when the primary battery is removed.
第１図は本発明に係わる電源装置の第１実施例を示すブ
ロック図、 第２図は第１図の電圧検出回路の作用を説明するための
説明図、 第３図は本発明に係わる電源装置の第２実施例を示すブ
ロック図、 第４図は一次電池と二次電池との放電特性を説明するた
めの説明図、 である。 １……電子スチルカメラの電源装置 17……定電圧電源回路 24……一次電池 25……二次電池 26……オン・オフスイッチ 27……充電回路 29……電圧検出回路 30……急速充電回路 31……通常充電回路FIG. 1 is a block diagram showing a first embodiment of a power supply device according to the present invention, FIG. 2 is an explanatory diagram for explaining the operation of the voltage detection circuit of FIG. 1, and FIG. 3 is a power supply according to the present invention. FIG. 4 is a block diagram showing a second embodiment of the device. FIG. 4 is an explanatory diagram for explaining discharge characteristics of a primary battery and a secondary battery. 1 Power supply device for electronic still camera 17 Constant voltage power supply circuit 24 Primary battery 25 Secondary battery 26 On / off switch 27 Charge circuit 29 Voltage detection circuit 30 Quick charge Circuit 31 Normal charging circuit
Claims (2)
内蔵型の二次電池のみに充電回路を通して充電電流を供
給する交換可能な一次電池を、前記一次電池と前記二次
電池との間に設けられたオン・オフスイッチを介して該
二次電池に接続する一方、前記直流電源出力の電圧を検
出する電圧検出回路を前記二次電池の出力側に接続し、
前記充電回路は前記二次電池に短時間で急速に充電を行
う急速充電回路と前記二次電池に前記急速充電回路によ
る充電時間よりも長い時間をかけて充電を行う通常充電
回路とから構成され、前記電圧検出回路は充電を要求す
る電圧に関係して設定された充電要求基準電圧よりも低
い急速充電要求電圧と前記直流電源出力の電圧とを比較
して、前記直流電源出力の電圧が前記急速充電要求基準
電圧よりも低いときに前記急速充電回路を通して前記二
次電池が充電されるように前記オン・オフスイッチを制
御し、かつ、前記直流電源出力の電圧が前記急速充電要
求基準電圧よりも高くて前記充電要求基準電圧よりも低
いときに前記通常充電回路を通して前記二次電池が充電
されるように前記オン・オフスイッチを制御し、しか
も、前記直流電源出力の電圧が前記充電要求基準電圧よ
りも高いときには前記オン・オフスイッチがオフするよ
うに前記オン・オフスイッチを制御することを特徴とす
る電源装置。1. An exchangeable primary battery that supplies a charging current to only a built-in secondary battery that supplies a DC power output to each electronic circuit component through a charging circuit, between the primary battery and the secondary battery. Connected to the secondary battery via an on / off switch provided on the other hand, a voltage detection circuit for detecting the voltage of the DC power supply output is connected to the output side of the secondary battery,
The charging circuit includes a quick charging circuit for rapidly charging the secondary battery in a short time and a normal charging circuit for charging the secondary battery over a longer time than the charging time by the quick charging circuit. The voltage detection circuit compares a voltage of the DC power supply output with a quick charge request voltage lower than a charge request reference voltage set in relation to a voltage required for charging, and the voltage of the DC power supply output is The on / off switch is controlled so that the secondary battery is charged through the quick charge circuit when the voltage is lower than the quick charge request reference voltage, and the voltage of the DC power supply output is higher than the quick charge request reference voltage. The on / off switch is controlled so that the secondary battery is charged through the normal charging circuit when the DC power is higher than the charging required reference voltage. Power supply when the voltage of higher than the charging request reference voltage, wherein the on-off switch to control the on-off switch to off.
二次電池のみに充電回路を通して充電電流を供給する一
次電池を、前記一次電池と前記二次電池との間に設けら
れたオン・オフスイッチを介して該二次電池に接続する
一方、前記直流電源出力の電圧を検出する電圧検出回路
を前記二次電池の出力側に接続し、 前記充電回路は前記二次電池に短時間で急速に充電を行
う急速充電回路と前記二次電池に前記急速充電回路によ
る充電時間よりも長い時間をかけて充電を行う通常充電
回路とから構成され、 前記電圧検出回路は充電を要求する電圧に関係して設定
された充電要求基準電圧よりも低い急速充電要求電圧と
前記直流電源出力の電圧とを比較して、前記直流電源出
力の電圧が前記急速充電要求基準電圧よりも低いときに
前記急速充電回路を通して前記二次電池が充電されるよ
うに前記オン・オフスイッチを制御し、かつ、前記直流
電源出力の電圧が前記急速充電要求基準電圧よりも高く
て前記充電要求基準電圧よりも低いときに前記通常充電
回路を通して前記二次電池が充電されるように前記オン
・オフスイッチを制御し、しかも、前記電圧検出回路
は、前記直流電源出力の電圧が前記充電要求基準電圧よ
りも高いときには前記オン・オフスイッチがオフするよ
うに前記オン・オフスイッチを制御し、また、前記電圧
検出回路は、前記各電子回路部品が動作不能となる前記
直流電源出力の電圧に関係して設定された動作不能対応
基準電圧と前記直流電源出力の電圧とを比較して該直流
電源出力の電圧が前記直流電源出力よりも低いときに
は、前記二次電池と該動作不能対応基準電圧との間に設
けられた直流電源出力供給停止スイッチが前記直流電源
出力の供給をオフにするように制御することを特徴とす
る電源装置。2. A primary battery, which supplies a charging current to only a secondary battery that supplies a DC power output to each electronic circuit component through a charging circuit, is connected to an ON / OFF battery provided between the primary battery and the secondary battery. While connected to the secondary battery via an off switch, a voltage detection circuit for detecting the voltage of the DC power output is connected to the output side of the secondary battery, and the charging circuit is connected to the secondary battery in a short time. A fast charging circuit for rapidly charging and a normal charging circuit for charging the secondary battery over a longer period of time than the charging time by the quick charging circuit, wherein the voltage detection circuit is configured to supply a voltage required for charging. A quick charging request voltage lower than the charging request reference voltage set in relation to the DC power supply output voltage is compared, and when the DC power supply output voltage is lower than the quick charging request reference voltage, the quick charging request voltage is lower. charging Controlling the on / off switch so that the secondary battery is charged through a path, and when the voltage of the DC power supply output is higher than the quick charge request reference voltage and lower than the charge request reference voltage. The on / off switch is controlled so that the secondary battery is charged through the normal charging circuit, and the voltage detection circuit is configured to switch the on / off switch when the voltage of the DC power supply output is higher than the charging request reference voltage. Controlling the on / off switch so that the off switch is turned off, and the voltage detection circuit is configured to be disabled in relation to the voltage of the DC power supply output at which the electronic circuit components are disabled. Comparing the corresponding reference voltage with the voltage of the DC power supply output, and when the voltage of the DC power supply output is lower than the DC power supply output, the secondary battery and the inoperable corresponding base are compared. A power supply device, wherein a DC power supply stop switch provided between the reference voltage and the reference voltage controls the supply of the DC power output to be turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1194892A JP2991442B2 (en) | 1989-07-27 | 1989-07-27 | Power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1194892A JP2991442B2 (en) | 1989-07-27 | 1989-07-27 | Power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0360337A JPH0360337A (en) | 1991-03-15 |
| JP2991442B2 true JP2991442B2 (en) | 1999-12-20 |
Family
ID=16332067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1194892A Expired - Lifetime JP2991442B2 (en) | 1989-07-27 | 1989-07-27 | Power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2991442B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0678465A (en) * | 1991-04-24 | 1994-03-18 | Fujitsu Ltd | Combination battery |
| JPH07154924A (en) * | 1993-11-26 | 1995-06-16 | Nec Corp | Battery usage system for portable electronic device |
| CN1314725A (en) * | 2000-11-16 | 2001-09-26 | 陈远鸿 | Chargerfree mobile phone cell |
| US7038333B2 (en) | 2002-02-15 | 2006-05-02 | The Gillette Company | Hybrid power supply |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53845A (en) * | 1976-06-25 | 1978-01-07 | Matsushita Electric Ind Co Ltd | Power source |
-
1989
- 1989-07-27 JP JP1194892A patent/JP2991442B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0360337A (en) | 1991-03-15 |
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