JP3464115B2 - Battery charge capacity measurement device - Google Patents
Battery charge capacity measurement deviceInfo
- Publication number
- JP3464115B2 JP3464115B2 JP10331397A JP10331397A JP3464115B2 JP 3464115 B2 JP3464115 B2 JP 3464115B2 JP 10331397 A JP10331397 A JP 10331397A JP 10331397 A JP10331397 A JP 10331397A JP 3464115 B2 JP3464115 B2 JP 3464115B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- voltage
- charge capacity
- current
- regulator
- 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 - Fee Related
Links
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
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、バッテリの充電容
量測定装置に関し、特に車載用の鉛バッテリの充電容量
測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery charge capacity measuring apparatus, and more particularly to a vehicle-mounted lead battery charge capacity measuring apparatus.
【０００２】[0002]
【従来の技術】一般的に車載用鉛バッテリの充電容量を
検出するための有効な方法として、充電容量の測定対象
となる鉛バッテリに対して、放電電流を用いて電圧─電
流特性を測定し、予め測定しておいた様々な充電状態に
おけるバッテリの電圧─電流特性と比較することによ
り、現在の充電容量を推定する方法が知られている。2. Description of the Related Art Generally, as an effective method for detecting the charge capacity of an in-vehicle lead battery, the voltage-current characteristic is measured using the discharge current for the lead battery whose charge capacity is to be measured. There is known a method of estimating the current charge capacity by comparing with the voltage-current characteristics of a battery in various charge states measured in advance.
【０００３】しかし、放電電流を用いて測定した電圧─
電流特性は、電圧─電流特性の測定直前まで行った充放
電の影響（即ち、履歴の影響）を受け易く、安定した特
性の測定が困難である、という問題がある。そこで、充
電電流を用いたバッテリの電圧─電流特性を用いる方法
が、例えば、特公平５３─１６０９８号公報で提案され
ている。この文献は、バッテリの放電量又は残存容量と
充電所要時間を判定する方法を開示するものである。However, the voltage measured using the discharge current
The current characteristics are easily affected by the charging / discharging (that is, the influence of history) performed immediately before the measurement of the voltage-current characteristics, and there is a problem that it is difficult to measure the stable characteristics. Therefore, a method of using the voltage-current characteristics of a battery using a charging current has been proposed, for example, in Japanese Patent Publication No. 53-16098. This document discloses a method for determining the discharge amount or remaining capacity of a battery and the required charging time.
【０００４】しかし、この従来の方法では、鉛バッテリ
の電圧─電流特性（後述の図５参照）からも分かるよう
に、充電電流が大きくなると、バッテリの端子電圧も高
くなり、過充電によりバッテリ寿命の低下を招きやす
い。この問題を解消するために、車両ではレギュレータ
を用いてバッテリ端子電圧の上限値が１４．２〜１４．
５（Ｖ）程度になるように制御している。However, in this conventional method, as can be seen from the voltage-current characteristics of the lead battery (see FIG. 5 to be described later), when the charging current becomes large, the terminal voltage of the battery also becomes high, and the battery life increases due to overcharging. Is likely to decrease. In order to solve this problem, an upper limit value of the battery terminal voltage of 14.2 to 14.
It is controlled so as to be about 5 (V).
【０００５】図５は充電後に充電電流を用いて測定した
バッテリの電圧─電流特性の一例のグラフであり、縦軸
はバッテリ端子電圧（Ｖ）であり、横軸は充電電流
（Ａ）である。また、図６は従来の車両における充電系
の基本構成であり、従来のバッテリ充電容量測定装置の
基本構成ブロック図である。図６に示す従来のバッテリ
充電容量測定装置において、充電制御ユニット２は電流
センサ及び電圧センサ１（以下、電流／電圧センサ）と
接続されており、電流／電圧センサ１からの信号を用い
てバッテリの電圧─電流特性を測定する。そして、予め
測定しておいた電圧─電流特性を参照して現在のバッテ
リ充電容量を推定する。FIG. 5 is a graph showing an example of the voltage-current characteristics of the battery measured by using the charging current after charging, where the vertical axis is the battery terminal voltage (V) and the horizontal axis is the charging current (A). . Further, FIG. 6 is a basic configuration block diagram of a conventional battery charging capacity measuring device, which is a basic configuration of a charging system in a conventional vehicle. In the conventional battery charge capacity measuring device shown in FIG. 6, the charge control unit 2 is connected to the current sensor and the voltage sensor 1 (hereinafter, current / voltage sensor), and the battery from the signal from the current / voltage sensor 1 is used. Measure the voltage-current characteristics of. Then, the current battery charge capacity is estimated with reference to the voltage-current characteristics measured in advance.
【０００６】ここで、図５に示した鉛バッテリの電圧─
電流特性からも分かるように、充電容量が異なると、即
ち、充電容量が大の場合と小の場合とでは、同じ充電電
流値でも異なったバッテリ端子電圧となる。従来のバッ
テリ充電容量測定方法では、図６の装置により図５の電
圧─電流特性を参照して次の手順で現在のバッテリ充電
容量を測定する。即ち、電流／電圧センサ１は常にバッ
テリ６の端子電圧（Ｖ）及びバッテリ充電電流（Ｉ）を
検出しており、充電制御ユニット２は、電流／電圧セン
サ１からの電流及び電圧値を受けてその内部で充電容量
の測定を行う。例えば、ある時点で測定したバッテリの
電圧─電流特性において、バッテリ端子電圧が１５Ｖで
充電電流が８Ａであったとする。この測定結果を図５の
電圧─電流特性を用いて、バッテリの充電容量は６０％
であることが分かる。Here, the voltage of the lead battery shown in FIG.
As can be seen from the current characteristics, when the charge capacities are different, that is, when the charge capacities are large and small, the battery terminal voltages are different even with the same charge current value. In the conventional battery charge capacity measuring method, the current battery charge capacity is measured by the following procedure with reference to the voltage-current characteristics of FIG. That is, the current / voltage sensor 1 always detects the terminal voltage (V) and the battery charging current (I) of the battery 6, and the charging control unit 2 receives the current and voltage values from the current / voltage sensor 1. The charge capacity is measured inside. For example, in the voltage-current characteristics of the battery measured at a certain time, it is assumed that the battery terminal voltage is 15V and the charging current is 8A. Using the voltage-current characteristics of Fig. 5, the charging capacity of the battery is 60%.
It turns out that
【０００７】[0007]
【発明が解決しようとする課題】ところで、バッテリの
電圧─電流特性を充電電流を用いて測定する場合、図５
に示すように、充電電流の増加と共にバッテリ端子電圧
は高くなる。しかし、現在使用している車両の充電系で
はバッテリ端子電圧が高くなると過充電や水の電気分解
などが発生し易くなりバッテリの寿命低下を招くため、
バッテリ端子電圧が一定値以上にならないようにレギュ
レータ４を用いて制御している。By the way, when the voltage-current characteristic of the battery is measured by using the charging current, FIG.
As shown in, the battery terminal voltage increases as the charging current increases. However, in the charging system of the vehicle currently used, when the battery terminal voltage becomes high, overcharging and electrolysis of water are likely to occur, leading to a decrease in battery life,
The regulator 4 is used to control so that the battery terminal voltage does not exceed a certain value.
【０００８】そのため、バッテリ６に流れる充電電流は
比較的小さな値に制限されてしまい、充電容量の推定に
必要な比較的大きな充電電流による電圧─電流特性の測
定が実現できない、という問題がある。本発明の目的
は、上述の問題を解消することにあり、電圧─電流特性
を測定する一定の測定期間（５〜１０秒）のみレギュレ
ータにより調整しているバッテリ端子電圧（調整電圧）
の値を通常より高く設定することにより、従来よりも大
きい充電電流を用いてバッテリの電圧─電流特性を測定
できるようにする。Therefore, the charging current flowing through the battery 6 is limited to a comparatively small value, and there is a problem that the voltage-current characteristic cannot be measured by the comparatively large charging current necessary for estimating the charging capacity. An object of the present invention is to solve the above-mentioned problems, and a battery terminal voltage (adjusted voltage) adjusted by a regulator only during a fixed measurement period (5 to 10 seconds) for measuring voltage-current characteristics.
By setting a higher value than usual, it becomes possible to measure the voltage-current characteristics of the battery using a charging current that is higher than in the past.
【０００９】また、上述したように、レギュレータの調
整電圧を高くすることによるバッテリ寿命の低下への影
響に対しては、これは水の電気分解によるバッテリ液
（水）の減少が原因となっていることが明らかになって
おり、バッテリ液の減少は水の電気分解が行われる時間
に比例している。従って、調整電圧を高く設定する期間
は出来るだけ短い方がよい。Further, as described above, with respect to the effect of decreasing the battery life by increasing the regulated voltage of the regulator, this is due to the decrease of the battery liquid (water) due to the electrolysis of water. It has been shown that battery fluid depletion is proportional to the time that water electrolysis takes place. Therefore, it is preferable that the period for setting the adjustment voltage high is as short as possible.
【００１０】本発明では、調整電圧を高くする期間をバ
ッテリの電圧─電流特性の測定期間のみに限定してお
り、この測定期間は必要かつ充分に短い時間であり、水
の電気分解による減少が充分無視できる時間である。従
って、本発明によるバッテリの電圧─電流特性の測定方
法によりバッテリ寿命の低下へ影響することはない。In the present invention, the period during which the regulated voltage is increased is limited to only the voltage-current characteristic measurement period of the battery, and this measurement period is a necessary and sufficiently short time, and the reduction due to the electrolysis of water occurs. This is a time that can be ignored. Therefore, the battery voltage-current characteristic measuring method according to the present invention does not affect the shortening of the battery life.
【００１１】[0011]
【課題を解決するための手段】請求項１の本発明によれ
ば、バッテリ端子電圧の上限値が従来はレギュレータに
より制限されている点に着目し、バッテリの電圧─電流
特性の測定期間（５〜１０秒間）のみレギュレータの調
整電圧を通常よりも高めに設定し、この調整電圧により
バッテリの端子電圧を制御することにより、大きな充電
電流によってバッテリの端子電圧が通常よりも高くなる
ようにする。According to the present invention of claim 1, focusing on the fact that the upper limit value of the battery terminal voltage is conventionally limited by the regulator, the measurement period (5 The regulated voltage of the regulator is set higher than usual only for 10 seconds), and the terminal voltage of the battery is controlled by this regulated voltage so that the terminal voltage of the battery becomes higher than usual due to a large charging current.
【００１２】その結果、大きな充電電流を用いた電圧─
電流特性の測定が可能となり、バッテリの充電容量測定
の精度向上に効果がある。As a result, a voltage using a large charging current--
The current characteristics can be measured, which is effective in improving the accuracy of battery charge capacity measurement.
【００１３】[0013]
【発明の実施の形態】図１は本発明によるバッテリ充電
容量測定装置の基本構成のブロック図である。本発明に
よれば電圧設定回路３が新しく配置されており、充電制
御ユニット２及びレギュレータ４に接続されている。ま
ず、電流／電圧センサ１によりバッテリの端子電圧
（Ｖ）及び充電電流（Ｉ）が検出され、充電制御ユニッ
ト２に送られる。1 is a block diagram of the basic configuration of a battery charge capacity measuring device according to the present invention. According to the present invention, the voltage setting circuit 3 is newly arranged and is connected to the charging control unit 2 and the regulator 4. First, the terminal voltage (V) and charging current (I) of the battery are detected by the current / voltage sensor 1 and sent to the charging control unit 2.
【００１４】充電制御ユニット２はバッテリの電圧─電
流特性を測定するための制御信号Ｓを電圧設定回路３に
出力する（図３の“ＯＮ”）。電圧設定回路３はこの制
御信号Ｓを受けると、レギュレータ４が測定期間だけ制
御目標とすべきバッテリ端子電圧を出力する（これを出
力電圧Ｏとする）。出力電圧の値は通常は現行の車両に
おける充電系と同様である。The charging control unit 2 outputs a control signal S for measuring the voltage-current characteristic of the battery to the voltage setting circuit 3 ("ON" in FIG. 3). When the voltage setting circuit 3 receives the control signal S, the regulator 4 outputs the battery terminal voltage to be the control target for the measurement period (this is referred to as the output voltage O). The value of the output voltage is usually the same as the charging system in the current vehicle.
【００１５】即ち、電圧設定回路３は、充電制御ユニッ
ト２から出力されたバッテリ電圧─電流特性の測定のた
めの制御信号Ｓを受けると、制御信号Ｓを受けている期
間内、又は内部タイマ（図示せず）により設定された期
間内は、バッテリ端子電圧が通常よりも高くなるように
調整電圧をレギュレータ４に出力する。レギュレータ４
はその期間だけバッテリ端子電圧を通常の電圧よりも高
く制御する。制御信号Ｓが停止されると（図３の“ＯＦ
Ｆ”）とレギュレータ４は通常の調整電圧に戻る。That is, when the voltage setting circuit 3 receives the control signal S for measuring the battery voltage-current characteristic output from the charging control unit 2, the voltage setting circuit 3 receives the control signal S within a period during which the control signal S is received or an internal timer ( During the period set by (not shown), the regulated voltage is output to the regulator 4 so that the battery terminal voltage becomes higher than usual. Regulator 4
Controls the battery terminal voltage higher than the normal voltage only for that period. When the control signal S is stopped (“OF
F ″) and the regulator 4 return to the normal regulated voltage.
【００１６】図２は本発明の制御フローチャートであ
り、図３は本発明の制御信号と出力信号の関係を示すタ
イミングチャートである。図３に示すように、充電制御
ユニット２からの制御信号Ｓが出力されてる期間内のみ
電圧設定回路３からの出力電圧Ｏを高く設定する。本発
明におけるバッテリ充電容量測定方法では、図１の測定
装置及び図５の電圧─電流特性を参照しつつ、図２に示
す手順で現在のバッテリ充電容量を測定する。FIG. 2 is a control flowchart of the present invention, and FIG. 3 is a timing chart showing the relationship between the control signal and the output signal of the present invention. As shown in FIG. 3, the output voltage O from the voltage setting circuit 3 is set high only during the period when the control signal S from the charging control unit 2 is output. In the battery charge capacity measuring method according to the present invention, the current battery charge capacity is measured by the procedure shown in FIG. 2 while referring to the measuring device of FIG. 1 and the voltage-current characteristic of FIG.
【００１７】まず、電流／電圧センサ１は常にバッテリ
６のバッテリ端子電圧（Ｖ）及びバッテリ充電電流
（Ｉ）を検出しており、検出結果は、充電制御ユニット
２の内部に保持される。そして充電制御ユニット２にて
充電容量検出の必要条件が成立したか否か判定される
（ステップＳ１）。次に、ステップＳ１で充電容量検出
の必要条件が成立したと判定されると（ＹＥＳ）、充電
制御ユニット２から電圧設定回路３へ電圧─電流特性の
測定のための制御信号Ｓが、測定に必要な最小限の測定
期間Ｔのみ（図３参照）、例えば５秒から１０秒程度出
力される（ステップＳ２）。なお、ステップＳ１で充電
容量検出の必要条件が成立しないと判定されると（Ｎ
Ｏ）、ステップＳ１の判定を繰り返す。First, the current / voltage sensor 1 always detects the battery terminal voltage (V) and the battery charging current (I) of the battery 6, and the detection result is held inside the charging control unit 2. Then, the charge control unit 2 determines whether or not the necessary condition for detecting the charge capacity is satisfied (step S1). Next, when it is determined in step S1 that the necessary condition for detecting the charging capacity is satisfied (YES), the control signal S for measuring the voltage-current characteristic is sent from the charging control unit 2 to the voltage setting circuit 3 for measurement. Only the minimum required measurement period T (see FIG. 3), for example, about 5 to 10 seconds is output (step S2). If it is determined in step S1 that the necessary condition for detecting the charge capacity is not satisfied (N
O), the determination in step S1 is repeated.
【００１８】次に、電圧設定回路３が制御信号Ｓを受け
ると、レギュレータ４に対して出力電圧Ｏを出力し、こ
の出力電圧Ｏに基づいてレギュレータ４の調整電圧（即
ち、バッテリの端子電圧の制限値）を変更する（ステッ
プＳ３）。この場合、本発明では調整電圧は通常の調整
電圧よりも高く設定される。次に、ステップＳ３で調整
されたレギュレータ４の調整電圧が高い状態におけるバ
ッテリの電圧─電流特性が、電流／電圧センサ１により
検出され測定される（ステップＳ４）。この測定結果に
よりバッテリの充電容量が図５のグラフを参照して求め
られる。Next, when the voltage setting circuit 3 receives the control signal S, it outputs the output voltage O to the regulator 4, and based on this output voltage O, the regulated voltage of the regulator 4 (that is, the terminal voltage of the battery). The limit value is changed (step S3). In this case, the adjustment voltage is set higher than the normal adjustment voltage in the present invention. Next, the voltage-current characteristic of the battery in the state where the regulated voltage of the regulator 4 adjusted in step S3 is high is detected and measured by the current / voltage sensor 1 (step S4). From this measurement result, the charge capacity of the battery can be obtained with reference to the graph of FIG.
【００１９】次に、電圧─電流特性の測定に必要な時間
Ｔが経過すると（図３参照）、充電制御ユニット２は電
圧設定回路３への制御信号Ｓの出力を停止する（ステッ
プＳ５）。そして、電圧設定回路３はこの制御信号Ｓが
停止されると、レギュレータ４の調整電圧を通常の値に
戻す（ステップＳ６）。ステップＳ２からＳ６はバッテ
リ充電容量の測定の度に繰り返される。Next, when the time T required for measuring the voltage-current characteristic elapses (see FIG. 3), the charging control unit 2 stops outputting the control signal S to the voltage setting circuit 3 (step S5). Then, when the control signal S is stopped, the voltage setting circuit 3 returns the adjusted voltage of the regulator 4 to the normal value (step S6). Steps S2 to S6 are repeated each time the battery charge capacity is measured.
【００２０】ところで、電圧─電流特性は常に測定が行
われるため、上述のステップにて充電制御ユニット２か
ら制御信号Ｓが出力されている期間内に測定した電圧─
電流特性は通常よりも大きな値をとる。例えば、測定結
果がバッテリ端子電圧１７Ｖで、充電電流が２１Ａとす
る。この測定結果は図５の電圧─電流特性を用いると、
バッテリの充電容量は約８０％である。By the way, since the voltage-current characteristic is constantly measured, the voltage measured within the period in which the control signal S is output from the charging control unit 2 in the above-mentioned steps.
The current characteristic has a larger value than usual. For example, assume that the measurement result is a battery terminal voltage of 17V and the charging current is 21A. This measurement result is obtained by using the voltage-current characteristic of FIG.
The charge capacity of the battery is about 80%.
【００２１】また、ステップＳ１における充電容量検出
のための必要条件として、時間経過、即ち、充放電開始
後の一定の時間が経過した場合を成立条件としてもよい
し、あるいは充電制御ユニット内で測定・演算を行って
求めた電流積算量が予め規定しておいた値を超えた場合
を成立条件としてもよい。本発明が従来の方法と異なる
のはレギュレータの調整電圧を制御することにより広範
囲での精度の高い電圧─電流特性が測定できるようにし
ている点であり、測定した電圧─電流特性から充電容量
を求める方法は従来と同様である。Further, as a necessary condition for detecting the charge capacity in step S1, it may be a condition that the time has elapsed, that is, the case where a certain time has elapsed after the start of charging / discharging, or the condition is measured in the charge control unit. The condition for establishment may be a case where the integrated current amount obtained by calculation exceeds a value specified in advance. The present invention is different from the conventional method in that the regulated voltage of the regulator is controlled so that a highly accurate voltage-current characteristic can be measured in a wide range, and the charging capacity is calculated from the measured voltage-current characteristic. The method of obtaining is the same as the conventional method.
【００２２】図４は本発明の一実施形態としてのバッテ
リ充電容量測定装置のブロック図である。前述のよう
に、本発明では、充電制御ユニット２からの制御信号Ｓ
を受けて、レギュレータ４に対して、所定の短い測定期
間だけ調整電圧を設定するための出力電圧Ｏを与える電
圧設定回路３が配置されている。なお、交流を発電しバ
ッテリ用の充電電圧を得るオルタネータ（ＡＬＴ）５、
トランジスタ（ＴＲ）と集積回路（ＩＣ）によるバッテ
リ端子電圧調整用のレギュレータ４、鉛バッテリ６等
は、周知のものなので説明を省略する。また、７は車両
内の電装品等の電気的負荷である。FIG. 4 is a block diagram of a battery charge capacity measuring apparatus as one embodiment of the present invention. As described above, in the present invention, the control signal S from the charging control unit 2 is
In response to this, a voltage setting circuit 3 for providing the output voltage O for setting the adjustment voltage to the regulator 4 for a predetermined short measurement period is arranged. An alternator (ALT) 5, which generates alternating current to obtain a charging voltage for a battery,
Since the regulator 4 for adjusting the battery terminal voltage by the transistor (TR) and the integrated circuit (IC), the lead battery 6 and the like are well known, the description thereof will be omitted. Further, 7 is an electric load such as electric components in the vehicle.
【００２３】[0023]
【発明の効果】以上説明したように、本発明によれば、
電圧─電流特性を測定する一定の短い測定期間（例えば
５〜１０秒）のみレギュレータによりバッテリ端子電圧
（調整電圧）の値を通常より高く設定することによっ
て、従来よりも大なる充電電流を用いてバッテリの電圧
─電流特性を測定でき、その結果精度の高いバッテリの
充電容量の測定が可能となる効果がある。この場合、レ
ギュレータの調整電圧を高くすることによるバッテリ寿
命の低下への影響に対しては、調整電圧を高くした測定
期間を、本発明によるバッテリの電圧─電流特性の測定
期間のみに限定しており、その時間は必要かつ充分に短
い時間であり水の電気分解による減少が充分無視できる
程度の時間に設定しているので、本発明による測定方法
によりバッテリ寿命の低下へ影響を与えることはない。As described above, according to the present invention,
By setting the value of the battery terminal voltage (regulated voltage) higher than usual by the regulator only for a certain short measurement period (for example, 5 to 10 seconds) for measuring the voltage-current characteristic, a larger charging current than before can be used. The voltage-current characteristics of the battery can be measured, and as a result, the charging capacity of the battery can be measured with high accuracy. In this case, with respect to the influence of decreasing the battery life by increasing the adjustment voltage of the regulator, the measurement period in which the adjustment voltage is increased is limited to only the measurement period of the voltage-current characteristics of the battery according to the present invention. However, since the time is set to a necessary and sufficiently short time and the reduction due to the electrolysis of water is set to a level that can be sufficiently ignored, the measuring method according to the present invention does not affect the reduction of the battery life. .
【図１】本発明によるバッテリ充電容量測定装置の基本
構成のブロック図である。FIG. 1 is a block diagram of a basic configuration of a battery charge capacity measuring device according to the present invention.
【図２】本発明の制御フローチャートである。FIG. 2 is a control flowchart of the present invention.
【図３】本発明の制御信号と出力信号の関係を示すタイ
ミングチャートである。FIG. 3 is a timing chart showing the relationship between control signals and output signals of the present invention.
【図４】本発明の一実施形態によるバッテリ充電容量測
定装置のブロック図である。FIG. 4 is a block diagram of a battery charge capacity measuring device according to an embodiment of the present invention.
【図５】充電後に充電電流を用いて測定した鉛バッテリ
の電圧─電流特性の一例グラフである。FIG. 5 is a graph showing an example of voltage-current characteristics of a lead battery measured by using a charging current after charging.
【図６】従来のバッテリ充電容量測定装置の基本構成ブ
ロック図である。FIG. 6 is a basic configuration block diagram of a conventional battery charge capacity measuring device.
１…センサ ２…充電制御ユニット ３…電圧設定回路 ４…レギュレータ ５…オルタネータ ６…バッテリ ７…電気負荷（Ｚ） 1 ... Sensor 2 ... Charge control unit 3 ... Voltage setting circuit 4 ... Regulator 5 ... Alternator 6 ... Battery 7 ... Electric load (Z)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 渡辺 洋平 愛知県豊田市トヨタ町１番地 トヨタ自 動車株式会社内 (72)発明者 岡崎 吉則 愛知県豊田市トヨタ町１番地 トヨタ自 動車株式会社内 (56)参考文献 特開 平８−17477（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 10/42 - 10/48 G01R 31/36 H02J 7/00 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yohei Watanabe 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Corporation (72) Inventor Yoshinori Okazaki 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Corporation (( 56) References JP-A-8-17477 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) H01M 10/42-10/48 G01R 31/36 H02J 7/00
Claims (7)
するセンサと、前記センサの検出結果に基づきバッテリ
の充電状態を制御する充電制御ユニットと、バッテリの
端子電圧を制御するレギュレータとを少なくとも有する
バッテリ充電容量測定装置において、 前記充電制御ユニットと前記レギュレータの間に、前記
レギュレータの電圧を調整するための電圧設定手段を配
置し、 前記充電制御ユニットは、バッテリの端子電圧─電流特
性を測定するときのみ測定期間を設定するための制御信
号を前記電圧設定手段に出力し、 前記電圧設定手段は、前記制御信号を受けている間、予
め設定された調整電圧と一致するように前記レギュレー
タの電圧を制御し、 前記制御信号を受けている期間のみバッテリの端子電圧
─電流特性を測定し、測定結果に基づきバッテリ充電容
量を求める、 ことを特徴とするバッテリ充電容量測定装置。1. A battery having at least a sensor for detecting a terminal voltage and a charging current of the battery, a charge control unit for controlling a charging state of the battery based on a detection result of the sensor, and a regulator for controlling the terminal voltage of the battery. In the charge capacity measuring device, a voltage setting unit for adjusting the voltage of the regulator is arranged between the charge control unit and the regulator, and the charge control unit measures the terminal voltage-current characteristics of the battery. Only outputs a control signal for setting the measurement period to the voltage setting means, the voltage setting means, while receiving the control signal, the voltage of the regulator so as to match the preset adjustment voltage. The terminal voltage-current characteristics of the battery are measured and measured only during the period when the control signal is received. Battery charge capacity measuring device for determining the battery charge capacity, and wherein the basis of the.
したときのみ設定される請求項１に記載のバッテリ充電
容量測定装置。2. The battery charge capacity measuring device according to claim 1, wherein the measurement period is set only when a predetermined necessary condition is satisfied.
後に一定時間が経過したときとする請求項２に記載のバ
ッテリ充電容量測定装置。3. The battery charge capacity measuring device according to claim 2, wherein the required condition is that a predetermined time has elapsed after the charge / discharge of the battery was started.
内で測定・演算を行って求めた電流積算量が予め規定し
ておいた値を超えたときとする請求項２に記載のバッテ
リ充電容量測定装置。4. The battery charge capacity according to claim 2, wherein the necessary condition is that a current integrated amount obtained by performing measurement / calculation in the charge control unit exceeds a value specified in advance. measuring device.
電流特性を測定するために必要かつ充分に短い時間とす
る請求項１に記載のバッテリ充電容量測定装置。5. The battery terminal voltage during the measurement period
The battery charge capacity measuring device according to claim 1, wherein the time required for measuring the current characteristics is sufficiently short.
了すると調整電圧を通常の値に戻す請求項１に記載のバ
ッテリ充電容量測定装置。6. The battery charge capacity measuring device according to claim 1, wherein the regulator returns the adjusted voltage to a normal value when the measurement period ends.
調整電圧は、前記レギュレータによる通常の調整電圧よ
りも高く設定される請求項１に記載のバッテリ充電容量
測定装置。7. The battery charge capacity measuring device according to claim 1, wherein the adjustment voltage set by the voltage setting means is set higher than a normal adjustment voltage by the regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10331397A JP3464115B2 (en) | 1997-04-21 | 1997-04-21 | Battery charge capacity measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10331397A JP3464115B2 (en) | 1997-04-21 | 1997-04-21 | Battery charge capacity measurement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10294134A JPH10294134A (en) | 1998-11-04 |
| JP3464115B2 true JP3464115B2 (en) | 2003-11-05 |
Family
ID=14350722
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10331397A Expired - Fee Related JP3464115B2 (en) | 1997-04-21 | 1997-04-21 | Battery charge capacity measurement device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3464115B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116256648A (en) * | 2023-05-16 | 2023-06-13 | 合肥力高动力科技有限公司 | Lithium battery SOH estimation method based on charging data |
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1997
- 1997-04-21 JP JP10331397A patent/JP3464115B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10294134A (en) | 1998-11-04 |
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