JPH11133122A - Battery residual quantity measuring method and apparatus - Google Patents
Battery residual quantity measuring method and apparatusInfo
- Publication number
- JPH11133122A JPH11133122A JP9314478A JP31447897A JPH11133122A JP H11133122 A JPH11133122 A JP H11133122A JP 9314478 A JP9314478 A JP 9314478A JP 31447897 A JP31447897 A JP 31447897A JP H11133122 A JPH11133122 A JP H11133122A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- measuring
- voltage
- load
- discharge
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/374—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電池の残りの保持
時間、すなわち残量を測定する方法および装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for measuring the remaining time, that is, the remaining amount of a battery.
【０００２】[0002]
【従来の技術】例えば、生産設備の各種制御機器には、
停電によるシステムのデータ消失を防止するためのバッ
クアップ用電池が装備されている。そして、このような
制御機器には、通常、電池の電圧降下を検知して警告を
出す警告手段が備えられているが、警告が出された段階
では、放電限界電圧の近くまで電圧が降下しているた
め、例えば、工場が無人となる長期休暇中に警告が出さ
れた場合には、対策の施しようもなく、データが消失し
てしまうことになる。2. Description of the Related Art For example, various control devices for production facilities include:
A backup battery is provided to prevent system data loss due to a power failure. Such a control device is usually provided with a warning means for detecting a voltage drop of the battery and issuing a warning, but when the warning is issued, the voltage drops to near the discharge limit voltage. Therefore, for example, if a warning is issued during a long vacation when the factory is unoccupied, data will be lost without taking any measures.
【０００３】そこで、例えば、特開平６−２４２１９５
号公報には、バックアップ用電池を内蔵する無停電電源
装置（ＵＰＳ）に、電池の周囲温度を測定するセンサ部
と、電池から放電される電力（電圧×電流）を測定する
センサ部と、各センサ部で検出されたデータを入力して
ファジー推論により保持時間を予測し、残り時間を表示
部にカウントダウンさせるようにした方法および装置が
記載されている。For example, Japanese Patent Application Laid-Open No. 6-242195 describes
Japanese Patent Laid-Open Publication No. H10-175686 discloses an uninterruptible power supply (UPS) incorporating a backup battery, a sensor unit for measuring the ambient temperature of the battery, and a sensor unit for measuring the power (voltage × current) discharged from the battery. A method and an apparatus are described in which data detected by a sensor unit is input, a holding time is predicted by fuzzy inference, and a remaining time is counted down on a display unit.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記公
報に記載の方法および装置によれば、ファジー推論を行
わせるための面倒な処理を必要とするため、装置が複雑
かつ高価になり、しかも、ＵＰＳ内に組込まれて専用化
されているため、バックアップを必要とする制御機器に
高価なＵＰＳを付加設置しなければならず、多数の制御
機器を備える生産工場への適用が困難である、という問
題があった。However, according to the method and apparatus described in the above-mentioned publication, since a complicated process for performing fuzzy inference is required, the apparatus becomes complicated and expensive, and the UPS The problem is that an expensive UPS must be additionally installed in a control device that requires a backup because it is built in and dedicated for use, and it is difficult to apply it to a production factory equipped with a large number of control devices. was there.
【０００５】本発明は、上記した問題点に鑑みてなされ
たもので、その目的とするところは、電池の残量の簡単
な測定を可能にする汎用性の高い方法および装置を提供
することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a highly versatile method and apparatus capable of easily measuring the remaining amount of a battery. is there.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
の本発明の方法は、測定対象である電池に所定の負荷を
かけて初期電圧降下を経時的に測定し、前記測定で得た
電圧Ｖと放電時間ｔとの２値データから、その電池に特
有の放電曲線に近似する二次式［Ｖ＝ａｔ2 ＋ｂｔ＋ｃ
（ただし、ａ，ｂは係数、ｃは無負荷電圧）］を求め、
前記二次式に補正を加えた後、この補正後の二次式に放
電限界電圧としてのしきい値を入れて、該しきい値に達
するまでの有効放電時間を求めるようにしたことを特徴
とする。According to a method of the present invention for achieving the above object, a predetermined load is applied to a battery to be measured, an initial voltage drop is measured with time, and the voltage obtained by the measurement is measured. From the binary data of V and the discharge time t, a quadratic expression [V = at 2 + bt + c] approximating a discharge curve specific to the battery.
(However, a and b are coefficients, and c is a no-load voltage)].
After correcting the quadratic equation, a threshold as a discharge limit voltage is inserted into the corrected quadratic equation, and an effective discharge time until the threshold is reached is determined. And
【０００７】本発明の方法においては、測定対象である
電池にその使用状態に応じた負荷をかけて、電圧Ｖと放
電時間ｔとの２値データを得るだけで、その電池に特有
の放電曲線に近似する二次式が求まり、したがって、こ
の二次式に温度補正等の補正を加えて放電限界電圧とし
てのしきい値を入れれば、残りの有効放電時間（残量）
が求まる。しかして、この近似式の算出には、負荷をか
けた後の初期電圧降下から得た２値データを使用するの
で、比較的短時間で電池の残量を把握することができ
る。In the method of the present invention, a discharge curve peculiar to the battery is obtained only by applying a load corresponding to the use state to the battery to be measured and obtaining binary data of the voltage V and the discharge time t. Is obtained. Therefore, if a threshold such as a temperature limit is added to the quadratic equation by adding a correction such as a temperature correction, the remaining effective discharge time (remaining amount) is obtained.
Is found. Since the approximate expression is calculated using binary data obtained from the initial voltage drop after the application of a load, the remaining amount of the battery can be grasped in a relatively short time.
【０００８】また、上記目的を達成するための本発明の
装置は、測定対象である電池にかける負荷を任意に設定
する負荷設定手段と、電池の電圧降下を測定する測定手
段と、該測定手段からのデータおよび予め設定した補正
係数に基づいてその電池に特有の放電曲線に近似する二
次式を算出し、かつこの二次式に放電限界電圧としての
しきい値を入れて、該しきい値に達するまでの有効放電
時間を算出する処理手段と、該処理手段での算出結果を
表示する表示手段とからなる構成としたことを特徴とす
る。この場合、上記負荷設定手段、測定手段、処理手段
および表示手段を一体的に装置本体に組込んでユニット
化するのが望ましい。According to another aspect of the present invention, there is provided a load setting unit for arbitrarily setting a load applied to a battery to be measured, a measuring unit for measuring a voltage drop of the battery, and the measuring unit. From the data and a correction coefficient set in advance, a secondary equation approximating a discharge curve specific to the battery is calculated, and a threshold value as a discharge limit voltage is added to the secondary equation, and the threshold is calculated. It is characterized by comprising processing means for calculating an effective discharge time until reaching a value, and display means for displaying the calculation result of the processing means. In this case, it is desirable that the load setting means, the measuring means, the processing means, and the display means are integrated into the apparatus body to form a unit.
【０００９】このように構成した電池の残量測定装置に
おいては、負荷設定手段により任意に負荷を設定し、測
定対象の電池にその使用状況に応じた負荷をかけること
で、測定手段で測定された電圧と放電時間との２値デー
タが処理部へ送られ、処理手段は、その電池に特有の放
電曲線に近似する二次の近似式を算出して、しきい値に
達するまでの時間を算出し、その結果を表示手段に表示
させる。また、各手段を装置本体に組込んでユニット化
した場合は、携帯型としての使用が可能になる。In the battery remaining amount measuring device thus configured, the load is set arbitrarily by the load setting means, and a load corresponding to the use condition is applied to the battery to be measured, so that the battery is measured by the measuring means. The binary data of the voltage and the discharge time is sent to the processing unit, and the processing means calculates a quadratic approximation that approximates a discharge curve specific to the battery, and calculates the time until the threshold is reached. The calculation is performed, and the result is displayed on the display unit. Further, when each unit is incorporated into the apparatus main body to form a unit, it can be used as a portable type.
【００１０】[0010]
【発明が実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１は、本発明の方法による電池残量の測
定原理を示したものである。電池の放電曲線は、一般に
図示のように放物線状となり、したがって電池の放電曲
線は、下記式（二次式）に置き換えることができる。 Ｖ＝ａｔ2 ＋ｂｔ＋ｃ ……FIG. 1 shows the principle of measuring the remaining battery power according to the method of the present invention. The discharge curve of a battery is generally parabolic as shown, and therefore, the discharge curve of the battery can be replaced by the following equation (secondary equation). V = at 2 + bt + c ...
【００１２】そこで、本発明では、先ず測定対象である
電池にその使用状態に応じた負荷をかけ、初期電圧降下
を監視して、負荷をかけてからの電圧Ｖと時間ｔとの相
関を求める。例えば、予め２つの電圧Ｖ1 ，Ｖ2 を設定
して、これら電圧Ｖ1 ，Ｖ2に達するまでに測定開始
（時間０）から要した時間ｔ1 ，ｔ2 を求め、これを２
値データＰ1 （Ｖ1 ，ｔ1 ）、Ｐ2 （Ｖ2 ，ｔ2 ）とし
て、それぞれを上記式式に入れる。この式中、ｃは
無負荷電圧Ｖ0 であり、この計算から係数ａ，ｂが確定
する。このように各係数が確定した二次式は、当該電池
の放電曲線に近似するものとなり、次に、この二次式
に、当該電池の放電限界電圧（例えば、制御機器のバッ
クアップデータを補償できる最低電圧）であるしきい値
ＶL を入れる。この結果、前記しきい値ＶL に達するま
での有効放電時間ｔL が求まり、この有効放電時間ｔL
から測定に要した時間を差し引けば、電池の残りの保持
時間すなわち残量を把握できることになる。Therefore, in the present invention, first, a load is applied to the battery to be measured according to its use state, the initial voltage drop is monitored, and the correlation between the voltage V after the load is applied and the time t is obtained. . For example, two voltages V 1 and V 2 are set in advance, and times t 1 and t 2 required from the start of measurement (time 0) until the voltages V 1 and V 2 are reached are calculated.
The value data P 1 (V 1 , t 1 ) and P 2 (V 2 , t 2 ) are entered in the above equation. In this equation, c is the no-load voltage V 0 , and the coefficients a and b are determined from this calculation. The quadratic equation in which each coefficient is determined in this way approximates the discharge curve of the battery. Next, the secondary equation includes the discharge limit voltage of the battery (for example, backup data of a control device can be compensated for). put the threshold V L is the lowest voltage). As a result, the threshold value V L Motomari is effective discharge time t L to reach, the effective discharge time t L
By subtracting the time required for the measurement from, the remaining time, that is, the remaining amount of the battery can be grasped.
【００１３】ところで、電池の放電曲線は温度により変
化し、例えば、アルカリ電池の場合は、図２に示すよう
に、その持続時間（保持時間）指数が20℃を基準（100
）にすると、40℃では 120程度、０℃では70程度にな
る。そこで、本実施の形態では、予めメーカーカタログ
を参考にして、または実験により各電池種類ごとの温度
補正係数αを決め、これを、図３に示すように温度補正
係数テーブルに記録しておく。そして、電池の残量測定
に際しては、この温度補正係数テーブルから、電池種類
Ａ、Ｂ…および使用環境の温度に応じた温度補正係数α
を選択し、この温度補正係数αを上記(1) 式の２次項に
乗じて下記式を得る。 Ｖ′＝ａｔ2 ×α＋ｂｔ＋ｃ ……By the way, the discharge curve of a battery changes with temperature. For example, in the case of an alkaline battery, as shown in FIG.
), About 120 at 40 ° C and about 70 at 0 ° C. Therefore, in the present embodiment, the temperature correction coefficient α for each battery type is determined in advance by referring to a manufacturer catalog or by experiment, and this is recorded in the temperature correction coefficient table as shown in FIG. When measuring the remaining amount of the battery, the temperature correction coefficient α according to the battery types A, B...
And the following equation is obtained by multiplying the temperature correction coefficient α by the quadratic term of the above equation (1). V ′ = at 2 × α + bt + c ......
【００１４】一方、上記したように初期電圧降下から得
た２値データに基いて二次式を求めた場合、電池種類
（放電特性）によっては、前出図１に二点鎖線で示すよ
うに、電圧降下の程度が長時間側で小さくなる虞があ
る。そこで、本実施の形態では、予めメーカーカタログ
を参考にして、または実験により各電池種類ごとの補正
係数（以下、これを電圧降下補正係数という）βを決
め、これを、図４に示すように電圧降下補正係数テーブ
ルに記録しておく。そして、電池の残量測定に際して
は、この電圧降下補正係数テーブルから、電池種類Ａ、
Ｂ…に応じた電圧降下補正係数βを選択し、この電圧降
下補正係数βを上記式の１次項に乗じて下記式を
得、これを近似式として用いるようにする。 Ｖ″＝ａｔ2 ×α＋ｂｔ×β＋ｃ ……On the other hand, when a quadratic expression is obtained based on the binary data obtained from the initial voltage drop as described above, depending on the type of battery (discharge characteristics), as shown by the two-dot chain line in FIG. In addition, the degree of the voltage drop may be reduced on the long-time side. Therefore, in the present embodiment, a correction coefficient (hereinafter, referred to as a voltage drop correction coefficient) β for each battery type is determined in advance by referring to a manufacturer catalog or by experiment, and is determined as shown in FIG. It is recorded in the voltage drop correction coefficient table. Then, when measuring the remaining amount of the battery, the battery type A,
The voltage drop correction coefficient β corresponding to B ... is selected, and the voltage drop correction coefficient β is multiplied by the first order term of the above equation to obtain the following equation, which is used as an approximate equation. V ″ = at 2 × α + bt × β + c ...
【００１５】このように、初期電圧降下から得た２値デ
ータＰ1 （Ｖ1 ，ｔ1 ）、Ｐ2 （Ｖ2 ，ｔ2 ）に基いて
求めた二次式に温度補正係数α、電圧降下補正係数βを
加えることにより、当該電池の種類および使用環境にお
ける残量を正確に求めることができるようになる。な
お、本発明は、電圧降下補正係数βによる補正を省略す
ることも可能であるが、この場合は、温度補正係数αを
一次項（ｂ）にも共通に乗じるようにするのが望まし
い。As described above, the quadratic equation obtained based on the binary data P 1 (V 1 , t 1 ) and P 2 (V 2 , t 2 ) obtained from the initial voltage drop has the temperature correction coefficient α and the voltage By adding the drop correction coefficient β, the type of the battery and the remaining amount in the usage environment can be accurately obtained. In the present invention, the correction by the voltage drop correction coefficient β can be omitted, but in this case, it is desirable that the temperature correction coefficient α is also multiplied by the primary term (b) in common.
【００１６】図５および図６は、上記した電池の残量測
定方法を実行するための装置の一つの実施の形態を示し
たものである。これらの図において、１は装置本体、２
は、商用電源３からの交流を直流に変換して装置本体１
へ送るＡ／Ｄ変換器である。装置本体１内には、測定対
象である電池４にかける負荷を任意に設定する負荷設定
部（負荷設定手段）５と、この負荷設定部５で設定した
負荷を電池４に流してその電圧降下を経時的に測定する
測定部（測定手段）６と、測定部６からのデータを処理
して、その電池４の放電限界電圧に達するまでの時間
（保持時間）を算出する処理部（処理手段）７と、処理
部７で算出した保持時間を表示する表示部（表示手段）
８とから概略構成されている。また、前記処理部７は、
前出図３および４に示した温度補正係数テーブルと電圧
降下補正係数テーブルとを用意するパラメータ部１１
と、上記近似式(3) を演算する演算処理部１２と、演算
処理部１２の演算結果に基いて電池の残量を決定する判
定部１３とからなっている。FIGS. 5 and 6 show one embodiment of an apparatus for executing the above-described method for measuring the remaining amount of the battery. In these figures, 1 is an apparatus main body, 2
Converts the alternating current from the commercial power source 3 into direct current and converts the
A / D converter to send to A / D converter. A load setting unit (load setting means) 5 for arbitrarily setting a load applied to the battery 4 to be measured, and a load set by the load setting unit 5 are supplied to the battery 4 to reduce a voltage drop of the load. (Measuring means) 6 for measuring the time-dependent measurement of the battery 4, and a processing section (processing means) for processing data from the measuring section 6 and calculating a time (holding time) until the battery 4 reaches the discharge limit voltage. 7) and a display unit (display means) for displaying the holding time calculated by the processing unit 7
8. Further, the processing unit 7 includes:
Parameter section 11 for preparing the temperature correction coefficient table and the voltage drop correction coefficient table shown in FIGS.
And an arithmetic processing unit 12 for calculating the approximate expression (3), and a determining unit 13 for determining the remaining amount of the battery based on the calculation result of the arithmetic processing unit 12.
【００１７】以下、上記装置による電池の寿命測定の手
順を、図７の処理フローも参照して説明する。測定者
は、測定対象の電池４の種類、環境温度Ｔおよび放電限
界電圧としてのしきい値ＶL をパラメータ部１１に入力
すると共に（Ｓ１）、制御機器の規格からその電池４に
かかる負荷を読出し、その負荷を負荷設定部５に入力す
る（Ｓ２）。次に、その電池４を制御機器から取出して
測定部６にセットし、測定をスタートさせる。すると、
電池４の電圧降下が測定部６により連続に測定され、そ
の信号が処理部７へ送出される。処理部７では、その電
圧降下を監視しながら、電圧が、予め設定したＶ1 また
はＶ2 になったか否かを判断し（Ｓ４）、電圧がＶ1 ま
たはＶ2 になったら、それまでの放電時間ｔ1 、ｔ2 を
測定し、２値データＰ1 （Ｖ1 ，ｔ1 ）、Ｐ2 （Ｖ2 ，
ｔ2 ）を確定する（Ｓ５）。そして、この２値データと
パラメータ部１１から取込んだ温度補正係数α、電圧降
下補正係数βとに基づいて近似式［Ｖ″＝ａｔ2 ×α
＋ｂｔ×β＋ｃ］を演算し（Ｓ６）、さらに、この近似
式にしきい値ＶL を入れて有効放電時間ｔL を演算する
（Ｓ７）。すると、判定部１３は、前記処理部７の演算
結果としての有効放電時間ｔLから前記測定に要した時
間を差し引いて残りの保持時間を割出し、その保持時間
に対応する信号を表示部８に送り、表示部８には残りの
保持時間が、例えばデジタル表示される。Hereinafter, the procedure of measuring the life of the battery by the above-described apparatus will be described with reference to the processing flow of FIG. The measurer inputs the type of the battery 4 to be measured, the environmental temperature T, and the threshold VL as the discharge limit voltage to the parameter unit 11 (S1), and determines the load applied to the battery 4 from the standard of the control device. The load is read and the load is input to the load setting unit 5 (S2). Next, the battery 4 is taken out from the control device, set in the measuring section 6, and the measurement is started. Then
The voltage drop of the battery 4 is continuously measured by the measuring unit 6, and the signal is sent to the processing unit 7. In the processing unit 7, while monitoring the voltage drop, voltage, and determines if the V 1 or V 2 preset (S4), When the voltage becomes V 1 or V 2, a far The discharge times t 1 and t 2 were measured, and the binary data P 1 (V 1 , t 1 ), P 2 (V 2 ,
t 2 ) is determined (S5). Then, based on the binary data, the temperature correction coefficient α and the voltage drop correction coefficient β taken from the parameter section 11, an approximate expression [V ″ = at 2 × α
+ Bt × β + c] (S6), and the effective discharge time t L is calculated by inserting the threshold value V L into this approximate expression (S7). Then, the determination unit 13 determines the remaining holding time by subtracting the time required for the measurement from the effective discharge time t L as the calculation result of the processing unit 7, and displays a signal corresponding to the holding time on the display unit 8. The remaining holding time is digitally displayed on the display unit 8, for example.
【００１８】[0018]
【実施例】ニッケル−カドニウム電池を対象に、周辺温
度40℃の条件で、この電池に2.8Aの負荷をかけ、電圧が
Ｖ1 ＝3.80V ，Ｖ2 ＝3.75V になるまでの時間ｔ1 ，ｔ
2をそれぞれ求めた。なお、無負荷電圧Ｖ0 は 3.85Vで
あった。この結果、ｔ1 ＝20min ，ｔ2 ＝27min とな
り、これらの２値データＰ1 （Ｖ1 ，ｔ1 ）、Ｐ2 （Ｖ
2 ，ｔ2 ）から得られる二次式は、Ｖ＝-2×10-4ｔ2 ＋
9×10-4ｔ＋3.85（式）となる。一方、予め求めたこ
の電池の温度補正係数αは 0.5（40℃）、電池補正係数
βは 5.0であり、前記式にこれら補正を加えると、該
電池の近似式は、Ｖ″＝-1×10-4ｔ2 ＋ 4.5×10-3ｔ＋
3.85（式）となる。当該電池のしきい値ＶL は3.0Vと
なっており、このしきい値を前記式に入れると、有効
放電時間ｔL は94min となる。この有効放電時間94min
は、上記条件で放電限界電圧まで放電させた時の放電時
間とほぼ一致し、本発明の方法の有効性が確認できた。EXAMPLE A nickel-cadmium battery was subjected to a load of 2.8 A under conditions of an ambient temperature of 40 ° C., and a time t 1 until the voltage became V 1 = 3.80 V and V 2 = 3.75 V. , T
2 was determined respectively. The no-load voltage V 0 was 3.85V. As a result, t 1 = 20 min, t 2 = 27 min, and these binary data P 1 (V 1 , t 1 ), P 2 (V
2 , t 2 ) is V = −2 × 10 −4 t 2 +
9 × 10 -4 t + 3.85 (formula). On the other hand, the temperature correction coefficient α of the battery obtained in advance is 0.5 (40 ° C.) and the battery correction coefficient β is 5.0. When these corrections are added to the above equation, the approximate equation of the battery becomes V ″ = − 1 × 10 -4 t 2 + 4.5 × 10 -3 t +
It becomes 3.85 (formula). The threshold value V L of the battery is 3.0 V. When this threshold value is included in the above equation, the effective discharge time t L is 94 min. This effective discharge time 94min
Was almost equal to the discharge time when the battery was discharged to the discharge limit voltage under the above conditions, confirming the effectiveness of the method of the present invention.
【００１９】[0019]
【発明の効果】以上、説明したように、本発明にかゝる
電池の残量測定方法および装置によれば、電池に負荷を
かけて初期電圧降下を測定し、その電池に特有の近似式
を求めるようにしたので、制御機器から電池を取外して
その有効放電時間を簡単に求めることができ、バックア
ップ用電池はもとより作動用電池の残量測定に汎用的に
利用できる。さらに、装置をユニット化した場合には、
携帯可能となって利用価値は著しく高いものとなる。As described above, according to the method and the apparatus for measuring the remaining amount of a battery according to the present invention, the initial voltage drop is measured by applying a load to the battery, and the approximate expression unique to the battery is measured. Is obtained, the battery can be removed from the control device, and its effective discharge time can be easily obtained, and the battery can be generally used for measuring the remaining amount of the operation battery as well as the backup battery. Furthermore, when the device is unitized,
The value of use becomes extremely high when it becomes portable.
【図１】本発明の方法による電池残量の測定原理を示す
グラフである。FIG. 1 is a graph showing the principle of measuring the remaining battery level according to the method of the present invention.
【図２】電池の放電特性に及ぼす温度の影響を示すグラ
フである。FIG. 2 is a graph showing the effect of temperature on the discharge characteristics of a battery.
【図３】本発明で用いる温度補正係数のテーブルの一例
を示す図表である。FIG. 3 is a table showing an example of a table of a temperature correction coefficient used in the present invention.
【図４】本発明で用いる電圧降下補正係数のテーブルの
一例を示す図表である。FIG. 4 is a table showing an example of a table of a voltage drop correction coefficient used in the present invention.
【図５】本発明にかゝる電池の残量測定装置を示すブロ
ック図である。FIG. 5 is a block diagram showing a battery remaining amount measuring device according to the present invention.
【図６】本装置の一部である処理部の構造を示すブロッ
ク図である。FIG. 6 is a block diagram showing a structure of a processing unit which is a part of the apparatus.
【図７】本装置による電池の残量測定の手順を示すフロ
ーチャートである。FIG. 7 is a flowchart showing a procedure for measuring a remaining battery level by the present apparatus.
１ 装置本体 ４ 測定用電池 ５ 負荷設定部（負荷設定手段） ６ 測定部（測定手段） ７ 処理部（処理手段） ８ 表示部（表示手段） DESCRIPTION OF SYMBOLS 1 Device main body 4 Measurement battery 5 Load setting part (load setting means) 6 Measurement part (measuring means) 7 Processing part (processing means) 8 Display part (display means)
Claims (3)
て初期電圧降下を経時的に測定し、前記測定で得た電圧
Ｖと放電時間ｔとの２値データから、その電池に特有の
放電曲線に近似する二次式［Ｖ＝ａｔ2 ＋ｂｔ＋ｃ（た
だし、ａ，ｂは係数、ｃは無負荷電圧）］を求め、前記
二次式に補正を加えた後、この補正後の二次式に放電限
界電圧としてのしきい値を入れて、該しきい値に達する
までの有効放電時間を求めることを特徴とする電池の残
量測定方法。1. An initial voltage drop is measured over time by applying a predetermined load to a battery to be measured, and based on binary data of a voltage V and a discharge time t obtained in the measurement, a specific data of the battery is obtained. A quadratic equation [V = at 2 + bt + c (where a and b are coefficients, c is a no-load voltage)] that approximates the discharge curve is obtained, and after correcting the quadratic equation, the corrected quadratic equation is obtained. A method for measuring the remaining amount of a battery, comprising: inserting a threshold value as a discharge limit voltage into an equation; and calculating an effective discharge time until the threshold value is reached.
に設定する負荷設定手段と、電池の電圧降下を測定する
測定手段と、該測定手段からのデータおよび予め設定し
た補正係数に基づいてその電池に特有の放電曲線に近似
する二次式を算出し、かつこの二次式に放電限界電圧と
してのしきい値を入れて、該しきい値に達するまでの有
効放電時間を算出する処理手段と、該処理手段での算出
結果を表示する表示手段とからなることを特徴とする電
池の残量測定装置。2. A load setting means for arbitrarily setting a load applied to a battery to be measured, a measuring means for measuring a voltage drop of the battery, and a measuring means for measuring a voltage drop of the battery based on data from the measuring means and a preset correction coefficient. Processing means for calculating a quadratic equation approximating a discharge curve specific to a battery, inserting a threshold value as a discharge limit voltage into the quadratic equation, and calculating an effective discharge time until reaching the threshold value And a display means for displaying a calculation result by the processing means.
び表示手段を一体的に装置本体に組込んでユニット化し
たことを特徴とする請求項２に記載の電池の残量測定装
置。3. The battery residual quantity measuring device according to claim 2, wherein the load setting means, the measuring means, the processing means and the display means are integrated into the apparatus body to form a unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9314478A JPH11133122A (en) | 1997-10-30 | 1997-10-30 | Battery residual quantity measuring method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9314478A JPH11133122A (en) | 1997-10-30 | 1997-10-30 | Battery residual quantity measuring method and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11133122A true JPH11133122A (en) | 1999-05-21 |
Family
ID=18053807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9314478A Pending JPH11133122A (en) | 1997-10-30 | 1997-10-30 | Battery residual quantity measuring method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11133122A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1686389A1 (en) * | 2005-01-25 | 2006-08-02 | Samsung SDI Co., Ltd. | Apparatus and method for monitoring charging/discharging capacity of battery packs |
| US7429849B2 (en) | 2003-11-26 | 2008-09-30 | Toyo System Co., Ltd. | Method and apparatus for confirming the charge amount and degradation state of a battery, a storage medium, an information processing apparatus, and an electronic apparatus |
| US7570025B2 (en) | 2004-11-29 | 2009-08-04 | Samsung Sdi Co., Ltd. | Apparatus and method for monitoring battery pack |
| CN103278779A (en) * | 2013-06-14 | 2013-09-04 | 天津新日机电有限公司 | Storage battery capacity monitoring system |
| CN108474822A (en) * | 2017-08-25 | 2018-08-31 | 深圳市云中飞网络科技有限公司 | Terminal device and its cell safety monitoring method and monitoring system |
| CN114236405A (en) * | 2020-09-07 | 2022-03-25 | 海能达通信股份有限公司 | Battery electric quantity detection method and device and portable electronic equipment |
-
1997
- 1997-10-30 JP JP9314478A patent/JPH11133122A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7429849B2 (en) | 2003-11-26 | 2008-09-30 | Toyo System Co., Ltd. | Method and apparatus for confirming the charge amount and degradation state of a battery, a storage medium, an information processing apparatus, and an electronic apparatus |
| US7974797B2 (en) | 2003-11-26 | 2011-07-05 | Toyo System Co., Ltd. | Method and apparatus for confirming the charge amount and degradation state of a battery, a storage medium, an information processing apparatus, and an electronic apparatus |
| US7570025B2 (en) | 2004-11-29 | 2009-08-04 | Samsung Sdi Co., Ltd. | Apparatus and method for monitoring battery pack |
| EP1686389A1 (en) * | 2005-01-25 | 2006-08-02 | Samsung SDI Co., Ltd. | Apparatus and method for monitoring charging/discharging capacity of battery packs |
| US7528580B2 (en) | 2005-01-25 | 2009-05-05 | Samsung Sdi Co., Ltd. | Apparatus and method for monitoring charging/discharging capacity of battery packs as a function of time and temperature |
| CN103278779A (en) * | 2013-06-14 | 2013-09-04 | 天津新日机电有限公司 | Storage battery capacity monitoring system |
| CN108474822A (en) * | 2017-08-25 | 2018-08-31 | 深圳市云中飞网络科技有限公司 | Terminal device and its cell safety monitoring method and monitoring system |
| US11163008B2 (en) | 2017-08-25 | 2021-11-02 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Terminal device and method and system for monitoring battery safety of terminal device |
| CN114236405A (en) * | 2020-09-07 | 2022-03-25 | 海能达通信股份有限公司 | Battery electric quantity detection method and device and portable electronic equipment |
| CN114236405B (en) * | 2020-09-07 | 2024-01-12 | 海能达通信股份有限公司 | Battery electric quantity detection method and device and portable electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2023154A2 (en) | Battery status detecting method, battery status detecting apparatus, and expression deriving method | |
| US7573237B2 (en) | System and method for monitoring battery state | |
| US7880438B1 (en) | UPS battery replacement | |
| US20110098966A1 (en) | Electronic clinical thermometer and operation control method | |
| JP4956476B2 (en) | Battery discharge duration prediction method, battery state detection method, battery state detection device, and battery power supply system | |
| JPS63500055A (en) | How to monitor the state of charge of storage batteries | |
| JPH11346444A (en) | Estimating method of battery charged condition | |
| US20090248334A1 (en) | Method for estimating the charge of a motor vehicle battery | |
| JP5823292B2 (en) | Method and apparatus for detecting state of power storage device | |
| JP3195130B2 (en) | Battery cell power failure detection device | |
| JP2019203719A (en) | Capacity detection method and capacity monitoring device for storage battery | |
| JP5089510B2 (en) | Secondary battery state detection method, state detection device, and secondary battery power supply system | |
| JP4044429B2 (en) | Secondary battery remaining life estimating apparatus and remaining life estimating method | |
| JPH11133122A (en) | Battery residual quantity measuring method and apparatus | |
| JP3432463B2 (en) | Battery capacity measurement device | |
| JP2007333474A (en) | Open voltage detection device, and open voltage detection method | |
| JP2002343444A (en) | Status-monitoring system for lead-acid battery | |
| JP4011303B2 (en) | Lead storage battery condition monitoring method | |
| JP4430321B2 (en) | Storage battery state determination device and storage battery state determination method | |
| JP2000243459A (en) | Service life determining method and service life determining device using the method | |
| JP2001021630A (en) | Battery charging device and detecting method full charge | |
| JPH0792213A (en) | Diagnosing device for lifetime of dc electrolytic capacitor | |
| JP2936441B2 (en) | Calculation method of capacity deterioration rate of storage battery and deterioration diagnosis device | |
| JP2009137308A (en) | Open voltage value estimation method and open voltage value estimation device | |
| US20220291290A1 (en) | Measurement appratus of power storage device and measurement method |