JPH03163766A - Battery residual capacity alarm system - Google Patents
Battery residual capacity alarm systemInfo
- Publication number
- JPH03163766A JPH03163766A JP1301724A JP30172489A JPH03163766A JP H03163766 A JPH03163766 A JP H03163766A JP 1301724 A JP1301724 A JP 1301724A JP 30172489 A JP30172489 A JP 30172489A JP H03163766 A JPH03163766 A JP H03163766A
- Authority
- JP
- Japan
- Prior art keywords
- secondary battery
- battery
- remaining amount
- amount
- residual capacity
- 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
- 239000013256 coordination polymer Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 6
- 229910005580 NiCd Inorganic materials 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Secondary Cells (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、充電可能な二次電池により動作する携帯電子
機器等に利用する電池残量報知装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a remaining battery power informing device for use in portable electronic devices and the like operated by rechargeable secondary batteries.
従来の技術
第２図は、従来の電池残量報知装置の構成を示している
。BACKGROUND OF THE INVENTION FIG. 2 shows the configuration of a conventional battery remaining amount informing device.
第２図において、■は、携帯機器本体、２は、二次電池
２ａを有する電池パックであり、電池パック２は、携帯
機器本体１に対し着脱自在である。二次電池２ａは、電
池パック２が携帯機器本体１に取り付けられているとき
に携帯機器本体１内の回路に電源電圧ＶＣＣを供給し、
携帯機器本体ｌから分離されて充電器（不図示）に接続
されているときに充電される。In FIG. 2, ■ is a main body of the portable device, and 2 is a battery pack having a secondary battery 2a, and the battery pack 2 is detachable from the main body 1 of the portable device. The secondary battery 2a supplies a power supply voltage VCC to the circuit inside the mobile device main body 1 when the battery pack 2 is attached to the mobile device main body 1,
The mobile device is charged when it is separated from the main body l and connected to a charger (not shown).
携帯機器本体ｌは、電池パック２が取り付けられている
ときに、二次電池２ａからの電流を微少抵抗を介して検
出する電流検出器１ａと、電流検出２ｆ；ｌａにより検
出される電流をディジタル値に変換するＡ／Ｄ変換器１
ｂと、．Ａ ／’ Ｄ変換器１ｂにより変換されたディ
ジタル値により二次電池２ａの消費電力を算出し、前の
残量から差し引くことにより二次電池２ａの残量を算出
する中央処理装置（ＣＰＵ）ｌｃと、ＣＰＵＩ ｃによ
り算出された二次電池２ａの残量を表示する表示器１ｄ
を備えている。When the battery pack 2 is attached to the mobile device body l, the current detector 1a detects the current from the secondary battery 2a via a minute resistance, and the current detected by the current detector 2f;la is digitally detected. A/D converter 1 that converts into a value
b and... A central processing unit (CPU) lc that calculates the power consumption of the secondary battery 2a based on the digital value converted by the A/'D converter 1b, and calculates the remaining amount of the secondary battery 2a by subtracting it from the previous remaining amount. and a display 1d that displays the remaining amount of the secondary battery 2a calculated by the CPUI c.
It is equipped with
第３図は、他の従来の電池残量報知装置の構成を示し、
３は、携帯機器本体、４は、二次電池４ａを有する電池
パックである。FIG. 3 shows the configuration of another conventional battery level notification device,
3 is a main body of the mobile device, and 4 is a battery pack having a secondary battery 4a.
第３図において、携帯機器本体３は、電池パック４が取
り付けられているときに、二次電池４ａの電圧をディジ
タル値に変換するＡ ，／ Ｄ変換器３ａと、Ａ／Ｄ変
換器３ａにより変換されたディジタル値により二次電池
４ａの残量を算出する中央処理装置（ＣＰＵ）３ｂと、
ＣＰＵ３ｂにより算出された二次電池４ａの残量を表示
する表示器３Ｃを備えている。In FIG. 3, when the battery pack 4 is attached to the mobile device body 3, the voltage of the secondary battery 4a is converted into a digital value by an A,/D converter 3a and an A/D converter 3a. a central processing unit (CPU) 3b that calculates the remaining amount of the secondary battery 4a based on the converted digital value;
A display 3C is provided to display the remaining amount of the secondary battery 4a calculated by the CPU 3b.
第４図は、他の従来の電池残量報知装置の構成を示し、
５は、携帯機器本体、６は、二次電池６ａを有する電池
ハ゜ブクである。FIG. 4 shows the configuration of another conventional battery remaining amount notification device,
5 is a main body of the portable device, and 6 is a battery hub having a secondary battery 6a.
第４図において、電池パック６は、二次電池６ａからの
電流を微少抵抗を介して検出する電流検出器６ｂと、電
流検出器６ｂにより検出される電流をディジタル値に変
換するＡ／Ｄ変換器６ｃと、Ａ／Ｄ変換器６ｃにより変
換されたディジタル値により二次電池６ａの消費電力を
算出し、前の残量から差し引くことにより二次電池６ａ
の残量を算出する中央処理装置（ＣＰＵ）６ｄと、ＣＰ
Ｕ５ｄにより算出された二次電池６ａの残量を表示する
表示器６ｅを備えている。In FIG. 4, the battery pack 6 includes a current detector 6b that detects the current from the secondary battery 6a via a minute resistance, and an A/D converter that converts the current detected by the current detector 6b into a digital value. The power consumption of the secondary battery 6a is calculated from the digital value converted by the A/D converter 6c and the A/D converter 6c, and the power consumption of the secondary battery 6a is subtracted from the previous remaining power.
A central processing unit (CPU) 6d that calculates the remaining amount of
A display 6e is provided to display the remaining amount of the secondary battery 6a calculated by U5d.
また、第３図に示すような電圧検出型の電池残量報知装
置を電池パック６に設けることも考えられる。It is also conceivable to provide the battery pack 6 with a voltage detection type battery remaining amount informing device as shown in FIG.
発明が解決しようとする課題
しかしながら、上記第２図に示す従来の電池残量報知装
置では、携帯機器１のＣＰＵ１が電流を検出して前の残
量から差し引くことにより二次電池２ａの残量を算出す
るので、電池パプク２が分離されて充電されたり、新し
い電池パックに交換されると、正しい残量を報知するこ
とができないという問題点がある。Problems to be Solved by the Invention However, in the conventional battery remaining amount informing device shown in FIG. Therefore, if the battery pack 2 is separated and charged or replaced with a new battery pack, there is a problem in that it is not possible to notify the correct remaining capacity.
また、第３図に示す従来の電池残量報知装置では、二次
電池４ａの現在の電圧を検出するので、上記問題点を解
決することができるが、検出電圧の精度が極端に悪く、
また、二次電池４ａとしてＮｉＣｄやＮＩＨを用いた場
合、第５図に示すように、その放電特性が平坦であって
残量が１０％以下になると急速に低下するので、放電特
性が平坦なときには正確な残量を検出することができな
いという問題点がある。Furthermore, in the conventional battery remaining power informing device shown in FIG. 3, the current voltage of the secondary battery 4a is detected, so the above problem can be solved, but the accuracy of the detected voltage is extremely poor.
In addition, when NiCd or NIH is used as the secondary battery 4a, as shown in Figure 5, its discharge characteristics are flat and rapidly decrease when the remaining capacity becomes less than 10%. There is a problem that sometimes it is not possible to accurately detect the remaining amount.
最後に、第４図に示す従来の電池残量報知装置では、上
記いずれの問題点を解決することができるが、残量を算
出するＣＰＵを電池パック内に備えるので、高価となる
問題点がある。Finally, the conventional battery remaining power informing device shown in FIG. 4 can solve any of the above problems, but since a CPU for calculating the remaining power is provided inside the battery pack, it has the problem of being expensive. be.
本発明は上記従来の問題点を解決するものであり、二次
電池の残量を正確に報知することができる安価な電池残
量報知装置を提供することを目的とする。The present invention solves the above-mentioned conventional problems, and aims to provide an inexpensive remaining battery power notification device that can accurately notify the remaining power of a secondary battery.
課題を解決するための手段
本発明は上記目的を達成するために、二次電池とこの二
次電池の残量を記憶する手段とを電池装置に備え、充電
器から二次電池の充電量をこの記憶手段に書き込むとと
もに、携帯機器本体から二次電池の放電量をこの記憶手
段に書き込むようにしたものである。Means for Solving the Problems In order to achieve the above object, the present invention includes a battery device including a secondary battery and a means for storing the remaining amount of the secondary battery, and a charger stores the amount of charge of the secondary battery. In addition to writing into this storage means, the discharge amount of the secondary battery is also written from the main body of the portable device into this storage means.
作用
本発明は上記構成により、二次電池の残量を記憶する手
段のみが二次電池側に設けられ、また、二次電池の電圧
を検出しないので、二次電池側が携帯機器から分離され
たり、新しい二次電池に交換されても、安価な構成で二
次電池の残量を正確に報知することができる。Effects of the present invention With the above configuration, only the means for storing the remaining amount of the secondary battery is provided on the secondary battery side, and since the voltage of the secondary battery is not detected, the secondary battery side is not separated from the mobile device. Even if the secondary battery is replaced with a new one, the remaining capacity of the secondary battery can be accurately notified with an inexpensive configuration.
実施例
以下、図面を参照して本発明の実施例を説明する。第１
図は、本発明に係る電池残量報知装置の一実施例を示す
ブロック図である。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1st
FIG. 1 is a block diagram showing an embodiment of a remaining battery power informing device according to the present invention.
第１図において、１０は、携帯機器本体２０及び充電器
３０に対し着脱自在な電池バックであり、電池パック１
０は、携帯機器本体２０内の回路（図示省略）に電源電
圧Ｖｃｃを供給するために、ＮｉＣｄやＮｒＨのように
充電可能な二次電池１１と、二次電池１１の残量を記憶
するためのアップダウン式のカウンタ１２を有する。カ
ウンタ１２には、後述するように、アップダウン信号Ｕ
Ｐ／ＤＮがハイレベルのときに、二次電池ｌ１の残量が
加算されて記憶され、アップダウン信号ＵＰ／ＤＮがロ
ウレベルのときに、二次電池１ｌの残量が減算されて記
憶される。In FIG. 1, reference numeral 10 denotes a battery bag that is detachable from the main body 20 of the mobile device and the charger 30, and the battery pack 1
0 is for storing a rechargeable secondary battery 11 such as NiCd or NrH and the remaining amount of the secondary battery 11 in order to supply the power supply voltage Vcc to a circuit (not shown) in the main body 20 of the mobile device. It has an up-down counter 12. The counter 12 receives an up/down signal U, as will be described later.
When P/DN is at a high level, the remaining amount of the secondary battery l1 is added and stored, and when the up/down signal UP/DN is at a low level, the remaining amount of the secondary battery 1l is subtracted and stored. .
携帯機器本体２０は、電池パック１０が取り付けられて
いるときに、二次電池１１の放電による電気量（ＡＨ）
を算出し、アップダウン信号ＵＰ／ＤＮとクロックパル
スＣＰにより、カウンタ１２に記憶された二次電池１１
の残量を減算するＣＰＵ２１と、ＬＣＤやＬＥＤにより
構成され、二次電池１１の残量を例えば４〜８段階で表
示する表示器２２と、充電と放電の切り替えスイッチ（
Ｓ Ｗ ’） ２ ３等を有する。When the battery pack 10 is attached to the mobile device main body 20, the amount of electricity (AH) due to the discharge of the secondary battery 11 is
is calculated and stored in the counter 12 according to the up/down signal UP/DN and the clock pulse CP.
A CPU 21 that subtracts the remaining amount of the secondary battery 11, a display 22 that is composed of an LCD or LED and that displays the remaining amount of the secondary battery 11 in, for example, 4 to 8 levels, and a charging/discharging switch (
S W ') 2 3 etc.
充電器３０は、電池パック１０が取り付けられていると
きに、二次電池１１の充電による電気量（ＡＨ）を算出
し、アップダウン信号Ｕ Ｐ ／ Ｄ Ｎとクロックパ
ルスＣＰにより、カウンタ１２に記憶された二次電池１
１の残量を加算するＣＰＵ３１と、充電回路（図示省略
）等を有する。When the battery pack 10 is attached, the charger 30 calculates the amount of electricity (AH) caused by charging the secondary battery 11, and stores it in the counter 12 using the up/down signal UP/D N and the clock pulse CP. secondary battery 1
It has a CPU 31 that adds up the remaining amount of 1, a charging circuit (not shown), and the like.
次に、上記実施例の動作を説明する。Next, the operation of the above embodiment will be explained.
第１図において、電池パック１０が充電器３０に取り付
けられ、二次電池１１が充電器３０により充電されてい
るときは、充電器３０のＣＰＵ３１は、アップダウン信
号ＵＰ／ＤＮをハイレベルにするとともに、充電量に応
じたクロックパルスＣＰを電池パックＩＯのカウンタ１
２に印加し、したがって、カウンタ１２に記録された二
次電池１１の残量がアップカウントされる。In FIG. 1, when the battery pack 10 is attached to the charger 30 and the secondary battery 11 is being charged by the charger 30, the CPU 31 of the charger 30 sets the up/down signal UP/DN to a high level. At the same time, the clock pulse CP corresponding to the amount of charge is sent to the counter 1 of the battery pack IO.
Therefore, the remaining capacity of the secondary battery 11 recorded in the counter 12 is counted up.
ここで、二次電池１ｌが充放電を繰り返したり、自然放
電したときは、カウンタ１２に記録される二次電池１１
の残量の積算ミスが発生するが、充電器３０のＣＰＵ３
１は、これを防止するために、二次電池ｌ１の過放電電
圧を検出したり、いわゆるーΔＶで充電量を検出等して
カウンタ１２をリセプトし、正しい充Ｍ ｊｌをカウン
タｌ２に記憶させる。Here, when the secondary battery 1l is repeatedly charged and discharged or self-discharged, the secondary battery 1l is recorded in the counter 12.
An error in accumulating the remaining amount occurs, but the CPU 3 of the charger 30
In order to prevent this, the counter 12 is reset by detecting the over-discharge voltage of the secondary battery l1 or the amount of charge at so-called -ΔV, and storing the correct charge Mjl in the counter l2. .
他方、電池バック１０が携帯機器本体２０に取り付けら
れ、二次電池１１が携帯機器本体２０内の回路に電源電
圧Ｖｃｃを供給するときは、携帯機器本体２００ＣＰＵ
２１は、アップダウン信号ＵＰ／ＤＮをＯウレベルにす
るとともに、放電量に応じたクロックパルスＣＰを電池
パック１０のカウンタ１２に印加し、したがって、カウ
ンタｌ２に記録された二次電池１１の残量がダウンカウ
ントされる。On the other hand, when the battery bag 10 is attached to the mobile device main body 20 and the secondary battery 11 supplies the power supply voltage Vcc to the circuit within the mobile device main body 20, the mobile device main body 200 CPU
21 sets the up/down signal UP/DN to O level and applies a clock pulse CP corresponding to the amount of discharge to the counter 12 of the battery pack 10, so that the remaining amount of the secondary battery 11 recorded in the counter 12 is counted down.
この場合、電池パック１０に設けられたカウンタ１２に
二次電池ｌ１の残量が記憶されているので、電池パック
１０が分離されて充電されたり、新しい電池バックに交
換されても、正しい残量を報知することができる。In this case, since the remaining amount of the secondary battery l1 is stored in the counter 12 provided in the battery pack 10, even if the battery pack 10 is separated and charged or replaced with a new battery bag, the remaining amount remains correct. can be notified.
また、上記実施例では、二次電池１ｌの電圧を検出しな
いので、その放電特性が平坦なＮｉＣｄやＮＩＨを二次
電池４ａとして用いても、正確な残量を検出することが
でき、更に、カウンタ１２のみを電池パック１０に付加
するので、高価となることもない。Further, in the above embodiment, since the voltage of the secondary battery 1l is not detected, even if NiCd or NIH, which has flat discharge characteristics, is used as the secondary battery 4a, the remaining battery level can be accurately detected. Since only the counter 12 is added to the battery pack 10, it is not expensive.
発明の効果
以上説明したように、本発明は、二次電池とこの二次電
池の残量を記憶する手段とを電池装置に備え、充電器か
ら二次電池の充電量をこの記憶手段に書き込むとともに
、携帯機器本体から二次電池の放電量をこの記憶手段に
書き込むようにしたので、安価な構成で二次電池の残量
を正確に報知することができる。Effects of the Invention As explained above, the present invention provides a battery device with a secondary battery and means for storing the remaining amount of the secondary battery, and writes the amount of charge of the secondary battery from the charger to the storage means. In addition, since the discharge amount of the secondary battery is written in the storage means from the main body of the portable device, it is possible to accurately notify the remaining amount of the secondary battery with an inexpensive configuration.
第１図は、本発明に係る電池残量報知装置の一実施例を
示すブロック図、第２図は、従来の電池残量報知装置を
示すブロプク図、第３図は、他の従来の電池残量報知装
置を示すブロック図、第４図は、他の従来の電池残量報
知装置を示すブロック図、第５図は、二次電池の放電特
性を示すグラフである。
１０・・・電池パック、１１・・・二次電池、１２・・
・カウンタ、２０・・・携帯機器本体、２１．３１・・
・中央処理装ｆｉｌ’（ＣＰＵ）、２２・・・表示器、
２３・・・切り替えスイッチ（ＳＷ）、３０・・・充電
器。
弟
１
図
第
２
図
ｌｄ−FIG. 1 is a block diagram showing an embodiment of the battery remaining amount notification device according to the present invention, FIG. 2 is a block diagram showing a conventional battery remaining amount notification device, and FIG. 3 is a block diagram showing an example of the battery remaining amount notification device according to the present invention. FIG. 4 is a block diagram showing a remaining battery power informing device, FIG. 4 is a block diagram showing another conventional battery remaining power informing device, and FIG. 5 is a graph showing discharge characteristics of a secondary battery. 10...Battery pack, 11...Secondary battery, 12...
・Counter, 20...Mobile device body, 21.31...
・Central processing unit fil' (CPU), 22...display unit,
23... Selector switch (SW), 30... Charger. Younger brother 1 Figure 2 Figure ld-
Claims (2)
を備えた電池装置と、 前記二次電池を充電するときに、その充電量を前記記憶
手段に書き込む手段を備えた充電器と、前記電池装置が
取り付けられ、前記二次電池から電源を供給されている
ときに、その放電量を前記記憶手段に書き込む手段と、
前記記憶手段に記録された二次電池の残量を報知する手
段とを備えた携帯機器本体とを有する電池残量報知装置
。(1) A battery device comprising a secondary battery and a means for storing the remaining amount of the secondary battery, and a charging device comprising a means for writing the amount of charge in the storage means when charging the secondary battery. means for writing the amount of discharge into the storage means when the battery device is attached and power is supplied from the secondary battery;
A battery remaining amount informing device comprising: a portable device main body having means for notifying the remaining amount of the secondary battery recorded in the storage means;
前記充電器は、このアップダウンカウンタが充電量をア
ップカウントするように制御し、携帯機器は、このアッ
プダウンカウンタが放電量をダウンカウントするように
制御することを特徴とする請求項（１）記載の電池残量
報知装置。(2) the storage means is an up/down counter;
Claim (1): The charger controls the up/down counter to count up the amount of charge, and the portable device controls the up/down counter to count down the amount of discharge. The battery remaining amount notification device described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1301724A JPH03163766A (en) | 1989-11-20 | 1989-11-20 | Battery residual capacity alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1301724A JPH03163766A (en) | 1989-11-20 | 1989-11-20 | Battery residual capacity alarm system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03163766A true JPH03163766A (en) | 1991-07-15 |
Family
ID=17900401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1301724A Pending JPH03163766A (en) | 1989-11-20 | 1989-11-20 | Battery residual capacity alarm system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03163766A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06188031A (en) * | 1992-12-16 | 1994-07-08 | Atom Kk | Protective circuit of battery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63121434A (en) * | 1986-11-10 | 1988-05-25 | ソニー株式会社 | Electric source |
-
1989
- 1989-11-20 JP JP1301724A patent/JPH03163766A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63121434A (en) * | 1986-11-10 | 1988-05-25 | ソニー株式会社 | Electric source |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06188031A (en) * | 1992-12-16 | 1994-07-08 | Atom Kk | Protective circuit of battery |
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