JPH01229986A - Battery checking apparatus - Google Patents
Battery checking apparatusInfo
- Publication number
- JPH01229986A JPH01229986A JP63281026A JP28102688A JPH01229986A JP H01229986 A JPH01229986 A JP H01229986A JP 63281026 A JP63281026 A JP 63281026A JP 28102688 A JP28102688 A JP 28102688A JP H01229986 A JPH01229986 A JP H01229986A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- specific gravity
- voltage
- electrolyte
- detection means
- 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
- 230000005484 gravity Effects 0.000 claims abstract description 111
- 239000003792 electrolyte Substances 0.000 claims abstract description 29
- 238000001514 detection method Methods 0.000 claims description 32
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000007858 starting material Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 11
- 238000010248 power generation Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 239000000446 fuel Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Landscapes
- Tests Of Electric Status Of Batteries (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、バッテリの状態を正確に知るためのバッテリ
状態検出装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a battery state detection device for accurately knowing the state of a battery.
（従来の技術〕
従来、バッテリの状態（残存容量等）を検出する手段と
して比重センサにより、バッテリの電解液比重を測定す
るものがあった。(Prior Art) Conventionally, as a means for detecting the state of a battery (remaining capacity, etc.), there has been a method of measuring the specific gravity of an electrolyte in a battery using a specific gravity sensor.
ところが上述した従来のものでは、バッテリ電極が劣化
した場合又は過充電等による液ヘリ時などには、その比
重とバッテリ容量の関係が変化してしまい、正確にバッ
テリ状態を測定できないといった問題点があった。However, with the above-mentioned conventional devices, when the battery electrodes deteriorate or when the liquid evaporates due to overcharging, etc., the relationship between the specific gravity and the battery capacity changes, making it impossible to accurately measure the battery condition. there were.
そこで、本発明においては、
基準となるバッテリの電解液比重に対するバッテリの放
電電流、電圧もしくは内部抵抗の１つのパラメータを記
憶する記憶手段と、
前記バッテリの比重を検出するための比重検出手段と、
バッテリからの放電電流が所定値以上の時に、上記バッ
テリの１つのパラメータおよび電解液比重を検出する第
１の検出手段と、
前記記憶手段に記憶された、前記第１の検出手段で検出
されたバッテリのパラメータに対応するバッテリの電解
液比重を求める第２の検出手段と、この第２の検出手段
で求めたバッテリの電解液比重と、前記第１の検出手段
で検出したバッテリの電解液比重とから、所定の演算で
比重補正値を得る補正値演算手段とを備え、
前記比重検出手段で検出されたバッテリの電解液比重に
、前記補正値演算手段で検出した比重補正値を補正して
、バッテリの比重を検出することを特徴とするバッテリ
状態検出装置とすることである。Therefore, in the present invention, there is provided a storage means for storing one parameter of the discharge current, voltage, or internal resistance of the battery with respect to the electrolyte specific gravity of the battery as a reference; a specific gravity detection means for detecting the specific gravity of the battery; a first detection means for detecting one parameter of the battery and the specific gravity of the electrolyte when the discharge current from the battery is equal to or higher than a predetermined value; a second detection means for determining the battery electrolyte specific gravity corresponding to the battery parameters; the battery electrolyte specific gravity determined by the second detection means; and the battery electrolyte specific gravity detected by the first detection means. and a correction value calculation means for obtaining a specific gravity correction value by a predetermined calculation, the battery electrolyte specific gravity detected by the specific gravity detection means being corrected by the specific gravity correction value detected by the correction value calculation means. , a battery condition detection device characterized by detecting the specific gravity of a battery.
〔作用］
上述の如く、バッテリ放電時のバッテリのパラメータに
よりバッテリ状態と比重値との対応を取り、基準となる
比重値と比較し、この比較した結果の比重補正値を比重
測定値に補正を加える。[Operation] As mentioned above, the battery condition and specific gravity value are correlated based on the battery parameters when the battery is discharged, and compared with the reference specific gravity value, and the specific gravity correction value resulting from this comparison is used to correct the specific gravity measured value. Add.
（発明の効果〕
以上述べた如く、本発明においては、バッテリの比重に
、第２の検出手段で検出した比重補正値を補正すること
で、比重の測定により、常に正確なバッテリ状態を検出
することができるという潰れた効果がある。(Effects of the Invention) As described above, in the present invention, by correcting the specific gravity of the battery with the specific gravity correction value detected by the second detection means, the battery condition can always be accurately detected by measuring the specific gravity. There is a crushing effect that can be done.
以下本発明を図に示す第１実施例について説明する。第
１図において、１−車載バッテリ、２−スタータ、３−
発電機、４−バッテリ１の電解液比重を検出する比重セ
ンサ、５−スタータ始動用のスタータスイッチ、６−バ
ッテリの放電電流を検出する電流検出器、７−マイクロ
コンピュータ、８−電気負荷、９−バッテリ１の寿命を
表示するための表示器、１０−バッテリの電圧検出器で
ある。A first embodiment of the present invention shown in the drawings will be described below. In FIG. 1, 1-vehicle battery, 2-starter, 3-
generator, 4-specific gravity sensor for detecting the electrolyte specific gravity of battery 1, 5-starter switch for starting the starter, 6-current detector for detecting the discharge current of the battery, 7-microcomputer, 8-electrical load, 9 - an indicator for displaying the life of the battery 1; 10 - a battery voltage detector;
そして、第２図は、バッテリが新しい時に、スタータを
始動した時のバッテリの比重に対するバッテリ電圧の曲
線Ａを示す特性図（標準特性図）である。（この特性曲
ｋｌは、スタータを始動した時に、バッチＩＪ ｌから
の放電電流が約１５０（Ａ）流した時の特性を示してい
る。）また、この特性は、コンピュータ７内に記憶され
ている。FIG. 2 is a characteristic diagram (standard characteristic diagram) showing a curve A of battery voltage versus specific gravity of the battery when the starter is started when the battery is new. (This characteristic curve kl shows the characteristic when about 150 (A) of discharge current flows from the batch IJ l when the starter is started.) Also, this characteristic is stored in the computer 7. There is.
ここで、■、はスタータ２を駆動するために必要な電圧
であり、この時のバッテリ１の比重をＳＬとする。Here, ■ is the voltage required to drive the starter 2, and the specific gravity of the battery 1 at this time is assumed to be SL.
次に、マイクロコンピュータ７内の制御について、第３
図に示すプログラムと共に、説明する。Next, regarding the control within the microcomputer 7, the third
This will be explained along with the program shown in the figure.
まず、スタータスイッチ５が閉じられ、スタータ２が始
動された場合に、電流検出器６でバッテリｌの放電電流
を測定する。そして、第１の検出手段７１により、バッ
テリ１の放電電流が、第２図の特性曲線Ａで示した１５
０（Ａ）になった際に、バッテリ電圧検出器１０により
、バッテリ１の状態を表わすパラメータの１つである電
圧を検出する。つまり、バッテリｌの放電電流が３０（
Ａ）以上でないと正確な放電電流と電圧の関係を得るこ
とができないからである。また、この電圧の測定と同時
、あるいはバッテリ１の状態が変化しない時間内（たと
えば比重変化０．０２以内）に、比重センサ４にてバッ
テリ電解液比重Ｓ、を測定する。First, when the starter switch 5 is closed and the starter 2 is started, the current detector 6 measures the discharge current of the battery l. Then, the first detection means 71 detects that the discharge current of the battery 1 is 15 as indicated by the characteristic curve A in FIG.
When the voltage reaches 0 (A), the battery voltage detector 10 detects the voltage, which is one of the parameters representing the state of the battery 1. In other words, the discharge current of battery l is 30 (
A) Otherwise, an accurate relationship between discharge current and voltage cannot be obtained. Further, at the same time as measuring this voltage, or within a time period during which the state of the battery 1 does not change (for example, within a change in specific gravity of 0.02), the specific gravity S of the battery electrolyte is measured by the specific gravity sensor 4.
そして、ステップ３にて、基準の比重の補正を行なう。Then, in step 3, the reference specific gravity is corrected.
まず、第２図に示す特性図に基づいて説明すると、ステ
ップｌにて、スタータ駆動時のバッテリ１の電圧ＶＩ、
比重Ｓ、が、１点の場合が求められたとする。この場合
では、標準特性Ａにおける比重ＳＡ （３’点）に対し
、比重Ｓ、が高くなっており、これはバッテリ１の状態
が悪化（例えば、バッテリ１の電解液の液ベリ、寿命等
）していることを示している。First, to explain based on the characteristic diagram shown in FIG. 2, in step 1, the voltage VI of the battery 1 when driving the starter,
Assume that the case where the specific gravity S is 1 point is found. In this case, the specific gravity S is higher than the specific gravity SA (point 3') in the standard characteristic A, which indicates that the condition of the battery 1 has deteriorated (e.g., the electrolyte of the battery 1 has deteriorated, the battery life has deteriorated, etc.) It shows that you are doing it.
つまり、標準特性Ａにおいては、バッテリ１の比重がＳ
Ｌ以上あれば、バッテリ１の電圧が■。In other words, in standard characteristic A, the specific gravity of battery 1 is S
If it is L or more, the voltage of battery 1 is ■.
以上となり、スタータ２を駆動することが可能となる。As described above, it becomes possible to drive the starter 2.
しかしながら、上述のように、バッテリ１の状態が悪化
すると、比重Ｓが高くなり、見掛は上、バッテリ電圧も
高くなっているように判断されるが、標準特性Ａに応じ
た比重Ｓによる制御を行なうと、比重Ｓが高いのにかか
わらず、バッテリ電圧が小さいため、結果的にスタータ
を駆動できなくなってしまう。However, as mentioned above, when the condition of the battery 1 deteriorates, the specific gravity S increases, and although it is judged that the appearance is good and the battery voltage is also high, the control based on the specific gravity S according to the standard characteristic A If this is done, the battery voltage will be low even though the specific gravity S is high, and as a result, the starter will not be able to be driven.
そこで、マイクロコンピュータ７内に記憶された標準特
性Ａにて、バッテリ電圧■ｌにおけるバッテリ標準比重
ＳＡを求め、実測比重値ＳＢと上記標準値ＳＡより、比
重補正値ΔＳ−３ＡＳ ｓを第２の検出手段および補正
値演算手段をなす７２により、ステップ３にて求める。Therefore, the battery standard specific gravity SA at the battery voltage ■l is determined using the standard characteristic A stored in the microcomputer 7, and the specific gravity correction value ΔS-3AS s is calculated from the measured specific gravity value SB and the above-mentioned standard value SA. It is determined in step 3 by means 72, which serves as a detection means and a correction value calculation means.
ステップ４では、所定時間後（例えば、車両が走行状態
の場合等）に、比重センサ４により、バッテリ１の比重
Ｓ、を検出する。In step 4, the specific gravity sensor 4 detects the specific gravity S of the battery 1 after a predetermined period of time (for example, when the vehicle is in a running state).
ステップ５では、ステップ４で得た比重Ｓｒに、ステッ
プ３で得た比重補正値ΔＳを加え、真の比重Ｓｒ ′を
得る。すなわち、悪化状態にあるバッテリ１は、第２図
に示す如く、比重が上昇してしまうため、比重を補正す
ることで、常にある電圧における正確な比重を正確に得
ることができる。In step 5, the specific gravity correction value ΔS obtained in step 3 is added to the specific gravity Sr obtained in step 4 to obtain the true specific gravity Sr'. That is, since the specific gravity of the battery 1 in a deteriorated state increases as shown in FIG. 2, by correcting the specific gravity, it is possible to always accurately obtain the correct specific gravity at a certain voltage.
従って、比重センサ４で得た比重を補正することで、常
に、正確なバッテリｌの状態を検出することができる。Therefore, by correcting the specific gravity obtained by the specific gravity sensor 4, it is possible to always accurately detect the state of the battery l.
また、バッテリ特性（バッテリの寿命、電解液量等で決
定される電解液比重と放電時電圧との関係）は、徐々に
変化する特性であるため比重補正値ΔＳは最低１走行に
１回、スタータ始動時に測定すれば十分である。In addition, since the battery characteristics (the relationship between the specific gravity of the electrolyte and the discharge voltage determined by the life of the battery, the amount of electrolyte, etc.) gradually change, the specific gravity correction value ΔS is adjusted at least once per run. It is sufficient to measure when starting the starter.
そして、補正された比重Ｓ ％に基づいて、発電制御を
すれば、常に比重と電圧との関係が正確であるため、ス
テップ６にて示す如く、補正された比重Ｓ ％を常にＳ
ｒ °≧ＳＬとなるように、（Ｓ、′≦ＳＬの場合には
、ステップ７にて調整電圧を上昇させるようにする。）
発電制御をすれば、スタータ始動時におけるバッテリ電
圧は、常に■１以上となり、確実にスタータを駆動する
ことが可能となる。If power generation is controlled based on the corrected specific gravity S %, the relationship between specific gravity and voltage will always be accurate, so as shown in step 6, the corrected specific gravity S % will always be
The adjustment voltage is increased in step 7 so that r°≧SL (if S,′≦SL, the adjustment voltage is increased in step 7).
If power generation is controlled, the battery voltage at the time of starting the starter will always be 1 or more, making it possible to drive the starter reliably.
また、ステップ８においては、ステップ６にて、Ｓｌ
“≧ＳＬの時に、比重値３ ％とＳＮとを比較するもの
である。ここで、Ｓ）Ｉは省燃費効果等から決まり、Ｓ
Ｌに対して、所定の幅を有するものである。つまり、ス
テップ８、ステップ９において、ｓ、’＜ｓ、となるよ
うに発電制御すれば、必要以上の充電（調整電圧をむや
みに上昇させる）をバッテリに行なう必要がなく、調整
電圧を下げることができるため、発電機３がエンジンに
対して少ない負荷ですむため、省燃費となる。また、バ
ッテリ１への充電量も減り、電解液の液べり抑制の効果
も得られる。In addition, in step 8, in step 6, Sl
“When SL is greater than or equal to SL, the specific gravity value of 3% is compared with SN. Here, S)I is determined from the fuel saving effect, etc.
It has a predetermined width with respect to L. In other words, if power generation is controlled so that s,'<s in steps 8 and 9, there is no need to charge the battery more than necessary (increase the regulated voltage unnecessarily), and the regulated voltage can be lowered. As a result, the generator 3 requires less load on the engine, resulting in fuel savings. Further, the amount of charge to the battery 1 is also reduced, and the effect of suppressing the electrolyte from sagging can also be obtained.
つまり、ステップ６ないしステップ９において、比重値
３７ ′をＳＬ≦３．＋≦ＳＩＩの範囲に入るように、
発電制御を行なう事により、バッテリ状態は過不足ない
状態に保たれ、車両のエンジン始動を確実とする（バッ
テリ上り防止）と共に、省燃費と液ベリ抑制効果が得ら
れる。That is, in steps 6 to 9, the specific gravity value 37' is set to SL≦3. To be within the range of +≦SII,
By performing power generation control, the battery condition is maintained in a proper state, ensuring the start of the vehicle's engine (preventing the battery from running out), and achieving fuel efficiency and liquid burr suppression effects.
なお、発電機の発電能力の関係で調整電圧の変更のみで
は、目的の充電が行われない場合は、エンジンのアイド
ルＵＰ、電気負荷の遮断などにより充電能力を高めたり
、放電防止をしてやる事で上記の効果を、よ／）確実な
ものとする事ができる。If the desired charging cannot be achieved by simply changing the adjustment voltage due to the generating capacity of the generator, it is possible to increase the charging capacity by increasing the engine idle or cutting off the electrical load, or to prevent discharge. The above effects can be ensured.
ここで、前述した比重の補正方法として、ステップ５に
て、比重検出値Ｓ、にｓ、’＝ｓ、＋ΔＳなる補正を加
えるのではなく、発電制御のための比重判定値Ｓｏ、Ｓ
ｔに補正を加え、それぞれ新たな判定値を３□ ９＝Ｓ
Ｈ−Δｓ、ｓＬ ’＝ｓＬ−ΔＳとし、ステップ４で得
た比重Ｓ、が、ＳＬ ＋＜Ｓ、 ＜ＳＫＩ “となる
ように、発電制御しても同様である。Here, as the specific gravity correction method described above, in step 5, instead of adding a correction of s,'=s,+ΔS to the specific gravity detection value S, the specific gravity judgment value So,S for power generation control is
Add correction to t and set new judgment value for each 3□ 9=S
The same effect can be obtained by controlling the power generation so that H-Δs, sL'=sL-ΔS, and the specific gravity S obtained in step 4 becomes SL+<S, <SKI.
さらに、前述のような発電制御をしているのにもかかわ
らず、ステップ２にて、ステップ１で得たバッテリ電圧
■６が■、以下となる場合は、ステップ１３にて、バッ
テリの交換時期を指示するための警報を出す事も可能で
ある。Furthermore, even though the power generation is controlled as described above, if in step 2 the battery voltage 6 obtained in step 1 is less than or equal to It is also possible to issue an alarm to instruct.
また、本実施例では発電制御するための判定値ＶＬ （
ＳＬ）と寿命警報をするための■、とは同一の値を使用
しているが、通常は一定のマージンを見込み、発電制御
のための判定値■、をＶｔＺ（ＶＬ□〉■Ｌ）とする。In addition, in this embodiment, the judgment value VL (
The same value is used for SL) and ■ for life warning, but normally, assuming a certain margin, the judgment value ■ for power generation control is set to VtZ (VL□〉■L). do.
また、比重補正値ΔＳは、過去数回の測定計算の平均値
を用いる事により、さらに補正精度を高める事ができる
。Moreover, the correction accuracy can be further improved by using the average value of several past measurement calculations for the specific gravity correction value ΔS.
上記実施例では、スタータ始動時のバッテリ特性測定方
法として所定電流（１５０Ａ）が放電された時のバッテ
リ電圧■８を求め、電解液比重ＳＢと比較しているが、
バッテリ性能を表す放電電流と電圧の関係Ｅ−Ｖ＝ＩＲ
（ここで、Ｒはバッテリの内部抵抗で充電状態などで異
なる。Ｅはバッテリの起電圧）を考えるとき、スタータ
始動時のバッテリ特性としてバッテリが所定電圧（例え
ば９．５（Ｖ））となった時の放電電流、又は内部抵抗
を検出してこれら放電電流もしくは内部抵抗によるバッ
テリ状態を検出してもよい。In the above example, as a method of measuring battery characteristics at the time of starting the starter, the battery voltage (■8) when a predetermined current (150 A) is discharged is determined and compared with the electrolyte specific gravity SB.
Relationship between discharge current and voltage that indicates battery performance E-V=IR
(Here, R is the internal resistance of the battery, which differs depending on the state of charge. E is the electromotive force of the battery.) When considering the battery characteristics when starting the starter, the battery reaches a predetermined voltage (for example, 9.5 (V)). The battery condition may be detected by detecting the discharge current or internal resistance when the battery is discharged.
そして、第４図は比重に対するバッテリ電流の特性図を
、第５図は比重に対する内部抵抗の特性図をそれぞれ示
しである。FIG. 4 shows a characteristic diagram of battery current with respect to specific gravity, and FIG. 5 shows a characteristic diagram of internal resistance with respect to specific gravity.
また、第６図および第７図には、本発明装置の第２実施
例が示されている。この実施例では、バッテリ１の内部
抵抗Ｒ６を検出するもので、電流検出器６にて所定の放
電電流を検出し、またバッテリ電圧検出器１０にて所定
の放電電流の時のバッテリ電圧を検出する。つまり、内
部抵抗Ｒをそして、マイクロコンピュータ７内に記憶さ
れた特性Ｂ（第５図図示）にて、内部抵抗Ｒ６における
バッテリ標準比重を求める。6 and 7 show a second embodiment of the device of the present invention. In this embodiment, the internal resistance R6 of the battery 1 is detected, a current detector 6 detects a predetermined discharge current, and a battery voltage detector 10 detects the battery voltage at a predetermined discharge current. do. That is, the standard specific gravity of the battery at the internal resistance R6 is determined using the internal resistance R and the characteristic B (shown in FIG. 5) stored in the microcomputer 7.
また、バッテリ標準比重を求めた後は、上述した実施例
に述べたように制御が行なわれる。Further, after determining the battery standard specific gravity, control is performed as described in the above embodiment.
また、発電制御しているにもかかわらず、内部抵抗Ｒ，
がＲＬ以上となる場合には、ステップ１３にてバッテリ
の劣化の警報を行なう。Also, despite the power generation control, the internal resistance R,
If the value exceeds RL, a warning of battery deterioration is issued in step 13.
さらに、前記の所定電流（電圧）とは、実測値でも良い
し、前記の所定電流（電圧）の近傍の測定値よりバッテ
リのＶ−１特性を利用し演算で求めでも良い。Further, the predetermined current (voltage) may be an actual measured value, or may be calculated by using the V-1 characteristic of the battery from a measured value near the predetermined current (voltage).
次に、第８図には本発明装置における第３実施例のフロ
ーチャートが示されている。このフローチャートでは、
第３図に示すフローチャートと比較して、ステップＳ１
４とステップＳ１５にて、バッテリの温度に応じて補正
をしている。Next, FIG. 8 shows a flowchart of a third embodiment of the apparatus of the present invention. In this flowchart,
In comparison with the flowchart shown in FIG.
4 and step S15, correction is made according to the temperature of the battery.
八
つまり、バッテリ特性（ステップＳ１における放電時の
電圧）および電解液比重は、温度特性を有しているから
である。In other words, the battery characteristics (the voltage during discharge in step S1) and the specific gravity of the electrolyte have temperature characteristics.
そこで、ステップＳ１４にてバッテリ電圧■８および比
重Ｓ、をバッテリーに取り付けた温度センサで得た温度
に応じて補正して、第°１実施例で上述したようにマイ
クロコンピュータ７内に記憶された標準特性Ａと比較す
るようにしている。Therefore, in step S14, the battery voltage (8) and specific gravity (S) are corrected according to the temperature obtained by the temperature sensor attached to the battery, and are stored in the microcomputer 7 as described above in the first embodiment. I try to compare it with standard characteristic A.
また、ステップＳ１５では、同様にステップＳ４で得た
比重に対して、温度補正を行なうようにしている。Furthermore, in step S15, temperature correction is similarly performed on the specific gravity obtained in step S4.
従って、この第３実施例ではバッテリ１の温度に応じて
電圧と比重の補正を行なうことにより、バッテリ状態検
出の精度を向上することができる。Therefore, in this third embodiment, by correcting the voltage and specific gravity according to the temperature of the battery 1, the accuracy of battery state detection can be improved.
第１図は本発明バッテリ状態検出装置の第１実施例を適
用した発電制御装置を示す電気回路図、第２図は比重に
対するバッテリ電圧の関係を示す特性図、第３図は上記
実施例におけるマイクロコンピュータ内の制御を示すフ
ローチャート、第４図は比重に対するバッテリの放電電
流の関係を示す特性図、第５図は比重に対するバッテリ
の内部抵抗の関係を示す特性図、第６図は本発明装置の
第２実施例を適用した発電制御装置を示す電気回路図、
第７図は上記第２実施例におけるマイクロコンピュータ
内の制御を示すフローチャート、第８図は本発明装置の
第３実施例におけるマイクロコンピュータ内の制御を示
すフローチャー１・である。
１・・・バッテリ、２・・・スタータ、３・・・発電機
、４・・・比重センサ、５・・・スタークスインヂ、６
・・・電流検出３．７・・・マイクロコンピュータ。FIG. 1 is an electric circuit diagram showing a power generation control device to which the first embodiment of the battery condition detection device of the present invention is applied, FIG. 2 is a characteristic diagram showing the relationship between battery voltage and specific gravity, and FIG. A flowchart showing the control within the microcomputer, FIG. 4 is a characteristic diagram showing the relationship between battery discharge current and specific gravity, FIG. 5 is a characteristic diagram showing the relationship between internal resistance of the battery and specific gravity, and FIG. 6 is a characteristic diagram showing the relationship between battery internal resistance and specific gravity. An electric circuit diagram showing a power generation control device to which the second embodiment of is applied;
FIG. 7 is a flowchart showing the control within the microcomputer in the second embodiment, and FIG. 8 is a flowchart 1 showing the control within the microcomputer in the third embodiment of the apparatus of the present invention. 1... Battery, 2... Starter, 3... Generator, 4... Specific gravity sensor, 5... Stark Swing, 6
...Current detection 3.7...Microcomputer.
Claims (2)
リの放電電流、電圧もしくは内部抵抗の１つのパラメー
タを記憶する記憶手段と、 前記バッテリの比重を検出するための比重検出手段と、 バッテリからの放電電流が所定値以上の時に、上記バッ
テリの１つのパラメータおよび電解液比重を検出する第
１の検出手段と、 前記記憶手段に記憶された、前記第１の検出手段で検出
されたバッテリのパラメータに対応するバッテリの電解
液比重を求める第２の検出手段と、この第２の検出手段
で求めたバッテリの電解液比重と、前記第１の検出手段
で検出したバッテリの電解液比重とから、所定の演算で
比重補正値を得る補正値演算手段とを備え、 前記比重検出手段で検出されたバッテリの電解液比重に
、前記補正値演算手段で検出した比重補正値を補正して
、バッテリの比重を検出することを特徴とするバッテリ
状態検出装置。(1) Storage means for storing one parameter of discharge current, voltage, or internal resistance of the battery with respect to the reference battery electrolyte specific gravity; Specific gravity detection means for detecting the specific gravity of the battery; and Discharge from the battery. a first detection means for detecting one parameter of the battery and the electrolyte specific gravity when the current is above a predetermined value; and a first detection means for detecting one parameter of the battery and the specific gravity of the electrolyte; A second detection means for determining the specific gravity of the electrolyte of the corresponding battery, the specific gravity of the battery electrolyte determined by the second detection means, and the specific gravity of the electrolyte of the battery detected by the first detection means. and a correction value calculating means for obtaining a specific gravity correction value by calculating the specific gravity of the battery, which corrects the specific gravity correction value detected by the correction value calculating means to the battery electrolyte specific gravity detected by the specific gravity detecting means to determine the specific gravity of the battery. A battery state detection device characterized by detecting.
と、 前記バッテリの比重を検出する比重検出手段と、前記バ
ッテリの放電電流を検出する電流検出器と、 基準となるバッテリの所定の放電電流に対するバッテリ
の電解液比重およびバッテリ電圧の関数としての第１の
値を記憶する記憶手段と、 前記電流検出器により検出した放電電流がほぼ所定の放
電電流の時に、前記電圧検出手段および比重検出手段に
より、バッテリ電圧の関数としての第２の値および電解
液比重を検出する第１の検出手段と、 前記記憶手段に記憶された、前記第１の検出手段で検出
された前記第１の値に対応するバッテリの電解液比重を
求める第２の検出手段と、 この第２の検出手段で求めたバッテリの電解液比重と、
前記第１の検出手段で検出したバッテリの電解液比重と
から、所定の演算で比重補正値を得る補正値演算手段と
を備え、 前記比重検出手段で検出されたバッテリの電解液比重に
、前記補正値演算手段で検出した比重補正値を補正して
、バッテリの比重を検出することを特徴とするバッテリ
状態検出装置。(2) a battery voltage detection means for detecting the voltage of the battery; a specific gravity detection means for detecting the specific gravity of the battery; and a current detector for detecting the discharge current of the battery; storage means for storing a first value as a function of battery electrolyte specific gravity and battery voltage; and when the discharge current detected by the current detector is approximately a predetermined discharge current, the voltage detection means and the specific gravity detection means , a first detection means for detecting a second value as a function of battery voltage and electrolyte specific gravity; and a second value stored in the storage means, corresponding to the first value detected by the first detection means. a second detection means for determining the specific gravity of the electrolyte of the battery; and the specific gravity of the electrolyte of the battery determined by the second detection means;
correction value calculation means for calculating a specific gravity correction value by a predetermined calculation from the battery electrolyte specific gravity detected by the first detection means; A battery state detection device characterized in that the specific gravity of the battery is detected by correcting the specific gravity correction value detected by the correction value calculation means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63281026A JPH01229986A (en) | 1987-11-13 | 1988-11-07 | Battery checking apparatus |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28806687 | 1987-11-13 | ||
| JP62-288066 | 1987-11-13 | ||
| JP63281026A JPH01229986A (en) | 1987-11-13 | 1988-11-07 | Battery checking apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01229986A true JPH01229986A (en) | 1989-09-13 |
Family
ID=26554027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63281026A Pending JPH01229986A (en) | 1987-11-13 | 1988-11-07 | Battery checking apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01229986A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0363582A (en) * | 1989-08-01 | 1991-03-19 | Nippondenso Co Ltd | Detector of battery condition |
| US5539318A (en) * | 1992-07-16 | 1996-07-23 | Toyota Jidosha Kabushiki Kaisha | Residual capacity meter for electric car battery |
| CN105699774A (en) * | 2016-01-30 | 2016-06-22 | 埃斯倍风电科技(青岛)有限公司 | Method for calibrating internal resistance initial value for pitch system battery pack |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5316835A (en) * | 1976-07-30 | 1978-02-16 | Aichi Electric Mfg | Detecting device for residual capacity of storage battery |
| JPS55157901A (en) * | 1979-05-24 | 1980-12-09 | Enshu Ltd | Self-charging electric motor automobile |
| JPS61213780A (en) * | 1985-03-20 | 1986-09-22 | Automob Antipollut & Saf Res Center | Apparatus for diagnosis of battery |
-
1988
- 1988-11-07 JP JP63281026A patent/JPH01229986A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5316835A (en) * | 1976-07-30 | 1978-02-16 | Aichi Electric Mfg | Detecting device for residual capacity of storage battery |
| JPS55157901A (en) * | 1979-05-24 | 1980-12-09 | Enshu Ltd | Self-charging electric motor automobile |
| JPS61213780A (en) * | 1985-03-20 | 1986-09-22 | Automob Antipollut & Saf Res Center | Apparatus for diagnosis of battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0363582A (en) * | 1989-08-01 | 1991-03-19 | Nippondenso Co Ltd | Detector of battery condition |
| US5539318A (en) * | 1992-07-16 | 1996-07-23 | Toyota Jidosha Kabushiki Kaisha | Residual capacity meter for electric car battery |
| CN105699774A (en) * | 2016-01-30 | 2016-06-22 | 埃斯倍风电科技(青岛)有限公司 | Method for calibrating internal resistance initial value for pitch system battery pack |
| CN105699774B (en) * | 2016-01-30 | 2020-12-08 | 埃斯倍风电科技(青岛)有限公司 | Method for calibrating internal resistance initial value of battery pack of variable pitch system |
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