JPH0556575A - Charge system for secondary battery - Google Patents

Charge system for secondary battery

Info

Publication number
JPH0556575A
JPH0556575A JP20906591A JP20906591A JPH0556575A JP H0556575 A JPH0556575 A JP H0556575A JP 20906591 A JP20906591 A JP 20906591A JP 20906591 A JP20906591 A JP 20906591A JP H0556575 A JPH0556575 A JP H0556575A
Authority
JP
Japan
Prior art keywords
secondary battery
section
remaining amount
unit
power supply
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
Application number
JP20906591A
Other languages
Japanese (ja)
Inventor
Hideo Yokoi
秀雄 横井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP20906591A priority Critical patent/JPH0556575A/en
Publication of JPH0556575A publication Critical patent/JPH0556575A/en
Pending legal-status Critical Current

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

PURPOSE:To make an automatic charge of a secondary battery possible by monitoring at all times a voltage of the secondary battery at a residual voltage detecting section and by turning a relay switch ON when a residual voltage comes to a specified value or below. CONSTITUTION:This system is provided with a secondary battery 2 for data backup for a memory section 1, a charge section 3 for charging the secondary battery 2, and a power supply section 5 for converting power to the power necessary for the system. A residual detecting section 7 monitors a voltage from the secondary battery 2 to be supplied to the memory section 1. When the residual voltage detecting section 7 determines that a residual voltage is low, a relay switch 8 of a power supply switch controlling section 6 constituted of a relay is turned into condition and a function of the power supply section 4 is turned on. By this method, an automatic charge is available and thereby the user of the system is free from monitoring a charge and a discharge time.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は二次電池の充電方式、特
に、情報処理装置のバックアップ用の二次電池の充電方
式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a secondary battery charging method, and more particularly to a secondary battery charging method for backup of an information processing apparatus.

【０００２】[0002]

【従来の技術】従来の二次電池の充電方式は、図２に示
すようにデータを記憶するメモリ部と、メモリ部１のバ
ックアップを行う二次電池２と、二次電池２の充電を行
う充電部３と、装置の電気を供給するための電源部４
と、電源部４を制御するための電源スイッチ５を有して
いる。装置の電源ＯＮ状態のときのみ二次電池２への充
電を行い、装置の電源ＯＦＦ状態のとき二次電池によっ
てメモリ１のバックアップを行っていた。2. Description of the Related Art A conventional rechargeable battery charging method is, as shown in FIG. 2, a memory unit for storing data, a rechargeable battery 2 for backing up the memory unit 1, and a rechargeable battery 2. Charging unit 3 and power supply unit 4 for supplying electricity to the device
And a power switch 5 for controlling the power supply unit 4. The secondary battery 2 is charged only when the power supply of the device is ON, and the memory 1 is backed up by the secondary battery when the power supply of the device is OFF.

【０００３】[0003]

【発明が解決しようとする課題】この従来の二次電池の
充電方式では、装置の電源ＯＮ時のみ二次電池への充電
を行っているため、二次電池の容量に応じて決められた
時間以上装置を使用せずに電源ＯＦＦの状態を継続して
いると、メモリの内容が破壊されるため、一定間隔に一
定時間装置の電源をＯＮ行い、充電を行うという装置運
用上の制限が必要になる問題点があった。In this conventional charging method for the secondary battery, the secondary battery is charged only when the power of the apparatus is turned on, and therefore the time determined according to the capacity of the secondary battery is set. If the power is turned off without using the device as described above, the contents of the memory will be destroyed. Therefore, it is necessary to turn on the device at a fixed interval for a fixed time and charge the device. There was a problem that became.

【０００４】[0004]

【課題を解決するための手段】本発明の二次電池の充電
方式は、データを記憶するメモリ部と、そのメモリ部の
バックアップを行うための二次電池と装置外部の電源か
ら装置内部に必要な電圧および電流に変換する電源部
と、装置に電気を供給するかいなかを制御する電源スイ
ッチを備え、装置に電気を供給している時に、二次電池
の充電を行い装置に電気を供給していないときには、二
次電池によりメモリをバックアップするために放電を行
う装置において、放電時の二次電池の残量を検出し、一
定量以下になったことを検出するための残量検出部を備
え、残量検出部の制御により、前記電源スイッチをＯＮ
状態にする電源スイッチ制御部を備え、二次電池の残量
低下時に自動的に充電動作を行う機能を備えている。SUMMARY OF THE INVENTION A secondary battery charging method of the present invention requires a memory unit for storing data, a secondary battery for backing up the memory unit, and a power source external to the device from inside the device. Equipped with a power supply unit that converts the voltage and current into various voltages and a power switch that controls whether or not to supply electricity to the device.When supplying electricity to the device, the secondary battery is charged to supply electricity to the device. If not, in a device that discharges to back up the memory with a secondary battery, a remaining amount detection unit for detecting the remaining amount of the secondary battery at the time of discharging and detecting that it has become a certain amount or less The power switch is turned on by the control of the remaining amount detection unit.
It is equipped with a power switch control unit that puts it into a state and has a function of automatically performing a charging operation when the remaining amount of the secondary battery decreases.

【０００５】[0005]

【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、本発明の一実施例のブロック図である。メ
モリ部１のデータバックアップを行う二次電池２と、二
次電池２の充電を行う充電部３と装置に必要な電源に変
換するための電源部５を備えている。残量検出部７は、
メモリ部１へ供給する二次電池２からの電圧を常時監視
している。残量検出部７は、常時電圧を監視するために
装置の電源ＯＦＦでも二次電池２からの電気によって動
作するものとする。したがって、二次電池２の残量検出
に当っては、残量検出部７が正常に動作できる電圧以上
で残量不足と判断し二次電池２への充電が行えるものと
する。The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention. The memory unit 1 is provided with a secondary battery 2 for backing up data, a charging unit 3 for charging the secondary battery 2, and a power supply unit 5 for converting into a power supply necessary for the apparatus. The remaining amount detector 7
The voltage from the secondary battery 2 supplied to the memory unit 1 is constantly monitored. In order to constantly monitor the voltage, the remaining amount detecting unit 7 is operated by electricity from the secondary battery 2 even when the power of the device is off. Therefore, in detecting the remaining amount of the secondary battery 2, it is determined that the remaining amount is insufficient and the secondary battery 2 can be charged at a voltage higher than the voltage at which the remaining amount detector 7 can operate normally.

【０００６】次に、残量検出部７が残量不足と判断した
ときは、リレーにて構成されている電源スイッチ制御部
６のリレースイッチ８を導通状態とし、電源部４の機能
をＯＮにする。電源部４の機能をＯＮにすることによ
り、充電部３により二次電池２に充電を行う。Next, when the remaining amount detecting unit 7 determines that the remaining amount is insufficient, the relay switch 8 of the power switch control unit 6 composed of a relay is turned on and the function of the power source unit 4 is turned on. To do. By turning on the function of the power supply unit 4, the charging unit 3 charges the secondary battery 2.

【０００７】また、残量検出部７にはタイマー回路９を
有しており、二次電池２の容量および種類に応じ、充電
に必要な時間をあらかじめ設定しておくことにより、一
定時間を経過した後に電源スイッチ制御部６のリレース
イッチ８をＯＦＦの状態にし充電動作を終了する。Further, the remaining amount detecting section 7 has a timer circuit 9, and a predetermined time elapses by presetting the time required for charging according to the capacity and type of the secondary battery 2. After that, the relay switch 8 of the power switch controller 6 is turned off, and the charging operation is completed.

【０００８】[0008]

【発明の効果】以上説明したように本発明は、二次電池
の残量を放電時、監視を行い、自動的に充電動作を行う
ことにしたので、装置使用者に対して充電、放電時間の
監視を行わせずにすむという効果を有する。As described above, according to the present invention, when the remaining amount of the secondary battery is discharged, the charging is automatically monitored and the charging operation is automatically performed. This has the effect of eliminating the need for monitoring.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例のブロック図である。FIG. 1 is a block diagram of an embodiment of the present invention.

【図２】従来の一例を示すブロック図である。FIG. 2 is a block diagram showing a conventional example.

【符号の説明】[Explanation of symbols]

１ メモリ部 ２ 二次電池 ３ 充電部 ４ 電源部 ５ 電源スイッチ ６ 電源スイッチ制御部 ７ 残量検出部 ８ リレースイッチ ９ タイマー回路 1 Memory Section 2 Secondary Battery 3 Charging Section 4 Power Section 5 Power Switch 6 Power Switch Control Section 7 Remaining Amount Detection Section 8 Relay Switch 9 Timer Circuit

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 データを記憶するメモリ部と、そのメモ
リ部のバックアップを行うための二次電池と、装置外部
の電源から、装置内部に必要な電圧および電流に変換す
る電源部と、装置に電気を供給するかいなかを制御する
電源スイッチを備え、装置に電気を供給している時に、
二次電池の充電を行い装置に電気を供給していないとき
には、二次電池によりメモリを、バックアップするとた
に放電を行う二次電池の充電方式において、放電時の二
次電池の残量を検出し、一定量以下になったことを検出
するための、残量検出部を備え、残量検出部の制御によ
り前記電源スイッチをＯＮ状態にする電源スイッチ制御
部を備え二次電池の残量低下時に自動的に充電動作を行
うことを特徴とする二次電池の充電方式。1. A memory unit for storing data, a secondary battery for backing up the memory unit, a power source unit for converting a power source external to the device into a voltage and current required inside the device, and a device. It is equipped with a power switch to control the supply of electricity, and while supplying electricity to the device,
When the secondary battery is charged and the device is not supplying electricity, the secondary battery charging method detects the remaining amount of the secondary battery at the time of discharging in the secondary battery charging method that backs up the memory with the secondary battery However, the remaining amount of the secondary battery is reduced by the remaining amount detecting unit for detecting that the amount is less than a certain amount, and the power switch control unit for turning on the power switch by the control of the remaining amount detecting unit. A rechargeable battery charging method that is automatically charged at times.
JP20906591A 1991-08-21 1991-08-21 Charge system for secondary battery Pending JPH0556575A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20906591A JPH0556575A (en) 1991-08-21 1991-08-21 Charge system for secondary battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20906591A JPH0556575A (en) 1991-08-21 1991-08-21 Charge system for secondary battery

Publications (1)

Publication Number Publication Date
JPH0556575A true JPH0556575A (en) 1993-03-05

Family

ID=16566674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20906591A Pending JPH0556575A (en) 1991-08-21 1991-08-21 Charge system for secondary battery

Country Status (1)

Country Link
JP (1) JPH0556575A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009519697A (en) * 2005-12-15 2009-05-14 エヌエックスピー ビー ヴィ Battery recharge prevention method for short-term battery voltage drop

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009519697A (en) * 2005-12-15 2009-05-14 エヌエックスピー ビー ヴィ Battery recharge prevention method for short-term battery voltage drop

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