JP2940878B2 - Open-circuit voltage measurement of lead-acid batteries - Google Patents
Open-circuit voltage measurement of lead-acid batteriesInfo
- Publication number
- JP2940878B2 JP2940878B2 JP2259503A JP25950390A JP2940878B2 JP 2940878 B2 JP2940878 B2 JP 2940878B2 JP 2259503 A JP2259503 A JP 2259503A JP 25950390 A JP25950390 A JP 25950390A JP 2940878 B2 JP2940878 B2 JP 2940878B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit voltage
- open
- lead
- open circuit
- measuring
- 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
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]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
-
- 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]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
- G01R31/379—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator for lead-acid batteries
Description
【発明の詳細な説明】 〈産業上の利用分野〉 この発明は鉛蓄電池の状態を知るための開路電圧測定
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention relates to an open circuit voltage measuring method for knowing the state of a lead storage battery.
〈従来の技術〉 電池特性の１つとして回路電圧は電池状態を知る上で
役立つものである。<Conventional Technology> As one of battery characteristics, circuit voltage is useful for knowing the battery state.
しかしながら、電池に対する充電中や放電中に一時的
に開路状態にしても通常の開路電圧を示すまでに数時間
を要する。However, even when the battery is temporarily opened during charging or discharging of the battery, it takes several hours to show a normal open circuit voltage.
〈発明が解決しようとする課題〉 従って、従来は充放電中または充放電直後の電池の開
路電圧を短時間に推定することは難しいという問題があ
る。<Problems to be Solved by the Invention> Therefore, conventionally, there is a problem that it is difficult to estimate the open circuit voltage of the battery during or immediately after charging / discharging in a short time.
そこで、この発明は上記のような問題点を解決するた
め、鉛蓄電池の開路電圧に近似する値を短時間に求める
ことができる開路電圧測定法を提供することを目的とし
ている。Therefore, an object of the present invention is to provide an open circuit voltage measuring method capable of obtaining a value approximating the open circuit voltage of a lead storage battery in a short time in order to solve the above-mentioned problems.
〈課題を解決するための手段〉 上記のような課題を解決するため、この発明は一定の
放電状態にある鉛蓄電池を一定電気量放電後休止し、休
止直後ならびに所定時間経過後の開路電圧を数点測定し
て、休止開始から測定までの経過時間の対数値と開路電
圧との回帰式を求め、次に先の一定放電量と略同じ電気
量を充電した後休止し、休止直後ならびに所定時間経過
後の開路電圧を数点測定して、休止開始から測定までの
経過時間の対数値と開路電圧との回帰式を求め、このよ
うにして得られた２つの回帰式の交点から求めた電圧を
開路電圧に近似するものと見なす方法を採用したもので
ある。<Means for Solving the Problems> In order to solve the above-described problems, the present invention suspends a lead storage battery in a constant discharge state after discharging a fixed amount of electricity, and immediately after the pause and after a predetermined time has passed, the open circuit voltage is reduced. Measure several points, find the regression equation of the logarithmic value of the elapsed time from the start of the pause to the measurement and the open circuit voltage, then charge the same amount of electricity as the previous constant discharge amount, pause, immediately after the pause, and The open circuit voltage after the passage of time was measured at several points, and the regression equation between the logarithmic value of the elapsed time from the start of the pause to the measurement and the open circuit voltage was obtained. The regression equation was obtained from the intersection of the two regression equations thus obtained. This adopts a method in which the voltage is regarded as approximating the open circuit voltage.
〈作用〉 ある放電状態の鉛蓄電池を一定電気量放電後休止した
場合、休止後の経過時間の対数値とそれに対応する開路
電圧とは高い相関があり、これに引き続き一定の放電電
気量と同一または略同じ電気量を充電した後休止した場
合、休止後の経過時間の対数値とそれに対応する開路電
圧とは高い相関があり、しかも２つの相関を表す回帰式
は互に傾きが逆で必ず１つの点で交わり、そしてこの交
点に相当する電圧は通常の開路電圧と近似し、従って短
時間で開路電圧を推定することができる。<Operation> When a lead storage battery in a certain discharge state is paused after discharging a certain amount of electricity, there is a high correlation between the logarithmic value of the elapsed time after the pause and the corresponding open circuit voltage, and subsequently the same as the constant discharge electricity amount Alternatively, when the battery is stopped after charging approximately the same amount of electricity, the logarithmic value of the elapsed time after the stop and the corresponding open-circuit voltage have a high correlation, and the regression formulas representing the two correlations have opposite slopes and must be opposite to each other. The voltage that intersects at one point and corresponds to this intersection approximates the normal open circuit voltage, so that the open circuit voltage can be estimated in a short time.
〈実施例〉 以下、この発明の実施例を添付図面に基づいて説明す
る。<Example> Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.
この発明は、鉛蓄電池の開路電圧測定法において、一
定の放電状態にある鉛蓄電池を一定電気量放電後休止
し、休止直後ならびに所定時間、例えば数秒〜数十秒経
過後の開路電圧を数点測定し、休止開始から測定までの
経過秒数の対数値と開路電圧との回帰式を求める。The present invention relates to a method for measuring the open-circuit voltage of a lead-acid battery. Measurement is performed, and a regression equation of the logarithmic value of the number of seconds elapsed from the start of the pause to the measurement and the open circuit voltage is obtained.
この経過時間の対数値とそれに対応する開路電圧とは
高い相関がある。There is a high correlation between the logarithmic value of the elapsed time and the corresponding open circuit voltage.
次に、先の一定放電量と略同じ電気量を充電した後休
止し、休止直後ならびに数秒〜数十秒経過後の開路電圧
を数点測定し、休止開始から測定までの経過秒数の対数
値と開路電圧との回帰式を求める。Next, after charging the same amount of electricity as the above-mentioned constant discharge amount, the battery is paused, the open circuit voltage is measured at several points immediately after the pause and after several seconds to several tens of seconds, and the number of seconds elapsed from the start of the pause to the measurement is measured. Find the regression equation between the numerical value and the open circuit voltage.
この場合も、経過時間の対数値とそれに対応する開路
電圧は高い相関がある。Also in this case, there is a high correlation between the logarithmic value of the elapsed time and the corresponding open circuit voltage.
このようにして得られた２つの回帰式は互いに傾きが
逆で必ず１つの点で交わり、しかもこの交点に相当する
電圧は通常の開路電圧と略近似するため、上記交点から
求めた電圧を鉛蓄電池の開路電圧と見なすものである。The two regression equations obtained in this way have opposite slopes and always intersect at one point, and the voltage corresponding to this intersection is approximately similar to a normal open circuit voltage. This is regarded as the open circuit voltage of the storage battery.
上記の開路電圧測定法において、一定電気量放電と一
定電気量充電の順序を逆にしてもよいと共に、一定電気
量の充放電電流を同一または略同一にするとよい。In the above-described open circuit voltage measurement method, the order of the constant electric quantity discharge and the constant electric quantity charge may be reversed, and the charge / discharge current of the constant electric quantity may be the same or substantially the same.
また、一定電気量放電または充電を行なう前の鉛蓄電
池状態が放電中であれば充電から、充電中であれば放電
から行なえばよく、一定電気量放電または充電を行なう
前に数十秒ないし数分の休止を入れるようにしてもよ
い。In addition, if the state of the lead storage battery before performing the constant electric quantity discharge or charging is from discharging, it is only necessary to start from charging, and if the state is charging, it is only necessary to start from discharging. A minute pause may be provided.
更に、一定電気量放電または充電を行なう電流値は電
池定格容量Ｃの0.1CA〜3CAの範囲で行なうのがよい。Further, it is preferable that the current value for discharging or charging the constant amount of electricity is in the range of 0.1 CA to 3 CA of the battery rated capacity C.
ところで、上記の開路電圧測定法において、求まる２
つの回帰式の交点に対応する経過時間は、ほぼ千秒前後
であることがわかっており、２つの回帰式を求めて、そ
の交点より電圧を求めるのに代えて、２つの回帰式のど
ちらか１つを求め、時間の項に千秒前後の値を代入して
求めた電圧を開路電圧と近似するものと見なしてもよ
い。By the way, in the above-described open circuit voltage measuring method, 2
It is known that the elapsed time corresponding to the intersection of the two regression equations is approximately 1000 seconds. Instead of obtaining the two regression equations and obtaining the voltage from the intersection, one of the two regression equations is used. One voltage may be obtained, and the voltage obtained by substituting a value of about 1000 seconds into the time term may be regarded as approximating the open circuit voltage.
次に、この発明の具体例を示す。 Next, specific examples of the present invention will be described.
定格容量35AHの2V鉛蓄電池６個を予め放電し、放電深
度50％の状態にした後、これを10.8Aで５分間放電した
後休止し、休止開始の１秒後、３秒後、15秒後、60秒後
の開路電圧Ｙを休止期間（秒）の対数値Ｘに対しプロッ
トしてその相関を求めた。Six 2V lead-acid batteries with a rated capacity of 35AH are pre-discharged, set to a discharge depth of 50%, discharged at 10.8A for 5 minutes, paused, 1 second after the start of the pause, 3 seconds, 15 seconds Thereafter, the open circuit voltage Y after 60 seconds was plotted against the logarithmic value X of the pause period (second) to obtain the correlation.
この場合の回帰式はＹ＝2.030＋0.013X 相関係数＋0.948で表わせる。（第１図） 次に、10.8Aで５分間充電した後休止し、休止開始の
１秒後、３秒後、15秒後、60秒後の開路電圧Ｙを充電時
間（秒）の対数値Ｘに対しプロットしてその相関を求め
た。The regression equation in this case can be represented by Y = 2.030 + 0.013X correlation coefficient + 0.948. (Fig. 1) Next, after charging at 10.8 A for 5 minutes, the battery was paused, and the open circuit voltage Y at 1 second, 3 seconds, 15 seconds, and 60 seconds after the start of the pause was calculated as the logarithmic value of the charging time (second). The correlation was determined by plotting against X.
この場合の回帰式はＹ＝2.158−0.028X 相関係数−0.974で表わせる。（第２図） この２つの回帰式を連立させてＹを求めると、Ｙ＝2.
071（Ｖ）となり、この放電深度における開路電圧の近
似値として用いることができる。The regression equation in this case can be represented by Y = 2.158-0.028X correlation coefficient-0.974. (FIG. 2) When these two regression equations are simultaneously calculated to obtain Y, Y = 2.
071 (V), which can be used as an approximate value of the open circuit voltage at this depth of discharge.
なお、上記具体例において放電および充電する電流値
は、先にも述べたように0.1CA〜3CAの範囲で行なうのが
よく、例えば0.01CAとか10CAで行なうと回帰式の相関係
数が悪くなるし、開路電圧にあまり近似しなくなる。In the above specific example, the current value for discharging and charging is preferably performed in the range of 0.1 CA to 3 CA as described above. For example, when the current value is 0.01 CA or 10 CA, the correlation coefficient of the regression equation becomes poor. Then, it does not approximate very much to the open circuit voltage.
〈効果〉 以上のように、この発明によると、鉛蓄電池の充放電
中または充放電直後の開路電圧を短時間に推定すること
ができるようになり、電池状態を知る上で極めて有用で
ある。<Effects> As described above, according to the present invention, the open circuit voltage during or immediately after charge / discharge of a lead storage battery can be estimated in a short time, which is extremely useful in knowing the battery state.
第１図は放電休止後の経過時間と開路電圧との関係を示
す相関図、第２図は充電休止後の経過時間と開路電圧と
の関係を示す相関図である。FIG. 1 is a correlation diagram showing the relationship between the elapsed time after the discharge pause and the open circuit voltage, and FIG. 2 is a correlation diagram showing the relationship between the elapsed time after the charge suspension and the open circuit voltage.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉田 征治 大阪府高槻市城西町６番６号 湯浅電池 株式会社内 (72)発明者 樋笠 博正 香川県高松市屋島西町2109番地８ 株式 会社四国総合研究所内 (72)発明者 石川 文彦 香川県高松市屋島西町2109番地８ 株式 会社四国総合研究所内 (72)発明者 松村 茂憲 香川県高松市屋島西町2109番地８ 株式 会社四国総合研究所内 (56)参考文献 特開 昭52−101440（ＪＰ，Ａ) 特開 平３−158781（ＪＰ，Ａ) 特開 昭50−8036（ＪＰ，Ａ) 特開 昭59−147279（ＪＰ，Ａ) 特開 昭55−75665（ＪＰ，Ａ) 特開 平４−134280（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) G01R 31/36 H02J 7/00 H01M 10/42 - 10/48 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Seiji Yoshida 6-6 Josai-cho, Takatsuki-shi, Osaka Yuasa Battery Co., Ltd. (72) Inventor Hiromasa Hikasa 2109-8 Yashima-nishi-cho, Takamatsu-shi, Kagawa Shikoku Integrated Research Co., Ltd. (72) Inventor Fumihiko Ishikawa 2109-8 Yashima Nishimachi, Takamatsu City, Kagawa Prefecture Inside Shikoku Research Institute, Inc. (72) Inventor Shigenori Matsumura 2109-8 Yashima Nishimachi, Takamatsu City, Kagawa Prefecture Inside Shikoku Research Institute, Inc. (56) References JP-A-52-101440 (JP, A) JP-A-3-158781 (JP, A) JP-A-50-8036 (JP, A) JP-A-59-147279 (JP, A) JP-A-55-75665 (JP, A) JP-A-4-134280 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) G01R 31/36 H02J 7/00 H01M 10/42-10/48
Claims (7)
量放電した後休止し、休止直後ならびに所定時間経過後
の開路電圧を数点測定して、休止開始から測定までの経
過時間の対数値と開路電圧との回帰式を求め、次に先の
一定放電量と略同じ電気量を充電した後休止し、休止直
後ならびに所定時間経過後の開路電圧を数点測定して、
休止開始から測定までの経過時間の対数値と開路電圧と
の回帰式を求め、このようにして得られた２つの回帰式
の交点から求めた電圧を開路電圧に近似するものと見な
すことを特徴とする鉛蓄電池の開路電圧測定法。1. A lead storage battery in a constant discharge state is halted after discharging a certain amount of electricity, and the open-circuit voltage is measured at several points immediately after the cessation and after a predetermined time has elapsed. Obtain a regression equation between the numerical value and the open circuit voltage, then pause after charging the same amount of electricity as the previous constant discharge amount, measure the open circuit voltage immediately after the pause and after a predetermined time, measure several points,
A regression equation of the logarithmic value of the elapsed time from the start of the pause to the measurement and the open circuit voltage is obtained, and the voltage obtained from the intersection of the two regression equations obtained in this way is regarded as approximating the open circuit voltage. Open-circuit voltage measurement method for lead-acid batteries.
測定法において、一定電気量放電と一定電気量充電の順
序を逆にすることを特徴とする鉛蓄電池の開路電圧測定
法2. The method for measuring the open circuit voltage of a lead storage battery according to claim 1, wherein the order of the constant electric quantity discharge and the constant electric quantity charge is reversed.
測定法において、一定電気量の充放電電流を同一または
略同一にすることを特徴とする鉛蓄電池の開路電圧測定
法。3. The open-circuit voltage measurement method for a lead-acid battery according to claim 1, wherein the charge / discharge current of a fixed quantity of electricity is made equal or substantially the same.
鉛蓄電池の開路電圧測定法において、一定電気量放電ま
たは充電を行なう前の電池状態が放電中であれば充電か
ら、充電中であれば放電から行なうことを特徴とする鉛
蓄電池の開路電圧測定法。4. The method for measuring the open-circuit voltage of a lead-acid battery according to claim 1, wherein the charging is performed if the state of the battery before discharging or charging is constant is discharging. A method for measuring the open-circuit voltage of a lead-acid battery, which is performed from discharging if charging.
測定法において、一定電気量放電または充電を行なう前
に数十秒ないし数分の休止を入れることを特徴とする鉛
蓄電池の開路電圧測定法。5. The lead-acid battery open-circuit voltage measuring method according to claim 4, wherein a pause of several tens seconds to several minutes is provided before discharging or charging a constant amount of electricity. Open circuit voltage measurement.
鉛蓄電池の開路電圧測定法において、一定電気量放電ま
たは充電を行なう電流値を電池定格容量Ｃの0.1CA〜3CA
の範囲で行なうことを特徴とする鉛蓄電池の開路電圧測
定法。6. A method for measuring the open-circuit voltage of a lead-acid battery according to claim 1, wherein a current value for discharging or charging a constant amount of electricity is 0.1 CA to 3 CA of a battery rated capacity C.
A method for measuring the open circuit voltage of a lead storage battery, characterized in that the method is performed in the range of:
測定法において、２つの回帰式の交点から電圧を求める
のに代えて、２つの回帰式のどちらか１つを求め時間の
項に千秒前後の値を代入して電圧を求め、この電圧を開
路電圧とすることを特徴とする鉛蓄電池の開路電圧測定
法。7. The method for measuring the open-circuit voltage of a lead-acid battery according to claim 1, wherein instead of calculating the voltage from the intersection of the two regression equations, one of the two regression equations is determined. A method for measuring the open circuit voltage of a lead storage battery, wherein a voltage is obtained by substituting a value of about 1000 seconds into a term, and the voltage is obtained as an open circuit voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2259503A JP2940878B2 (en) | 1990-09-27 | 1990-09-27 | Open-circuit voltage measurement of lead-acid batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2259503A JP2940878B2 (en) | 1990-09-27 | 1990-09-27 | Open-circuit voltage measurement of lead-acid batteries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04134279A JPH04134279A (en) | 1992-05-08 |
| JP2940878B2 true JP2940878B2 (en) | 1999-08-25 |
Family
ID=17335006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2259503A Expired - Lifetime JP2940878B2 (en) | 1990-09-27 | 1990-09-27 | Open-circuit voltage measurement of lead-acid batteries |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2940878B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2328288B (en) * | 1997-06-19 | 2002-03-06 | Sun Electric Uk Ltd | Battery testing and classification |
| JP6066163B2 (en) | 2012-05-17 | 2017-01-25 | 株式会社Ｇｓユアサ | Open circuit voltage estimation device, state estimation device, and open circuit voltage estimation method |
-
1990
- 1990-09-27 JP JP2259503A patent/JP2940878B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04134279A (en) | 1992-05-08 |
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