JPH11162524A - Battery residual capacity detector - Google Patents
Battery residual capacity detectorInfo
- Publication number
- JPH11162524A JPH11162524A JP9343936A JP34393697A JPH11162524A JP H11162524 A JPH11162524 A JP H11162524A JP 9343936 A JP9343936 A JP 9343936A JP 34393697 A JP34393697 A JP 34393697A JP H11162524 A JPH11162524 A JP H11162524A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- voltage
- current
- remaining amount
- temperature
- 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.)
- Withdrawn
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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電池の電圧、電流に
より電池残量を判定する電池残量検出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery level detecting device for determining a battery level based on the voltage and current of a battery.
【０００２】[0002]
【従来の技術】一般に電池（バッテリ）は残量の減少に
伴って、図１０（Ａ）に示すように、その電圧を低下さ
せる。また、残量が一定であっても、図１０（Ｂ）に示
すように、電池が放出する電流の大きさにより電池電圧
は低下する。これは電池の内部抵抗によるものである。2. Description of the Related Art Generally, the voltage of a battery (battery) is reduced as shown in FIG. Further, even when the remaining amount is constant, as shown in FIG. 10B, the battery voltage decreases depending on the magnitude of the current discharged from the battery. This is due to the internal resistance of the battery.
【０００３】そこで、電池残量を判定するために、電圧
が所定値以上かどうかを判定するのではなく、図１０
（Ｃ）に示すように、電池電圧と電流の関係が所定の範
囲（この場合は残量が５０％以上）であるかどうかを判
定していた。Therefore, in order to determine the remaining battery level, it is not necessary to determine whether the voltage is equal to or higher than a predetermined value.
As shown in (C), it was determined whether the relationship between the battery voltage and the current was within a predetermined range (in this case, the remaining amount was 50% or more).
【０００４】しかし電池の温度により、電池の残量と電
圧の関係は、図８（Ａ）に示すように、同じ残量に対し
て温度が低いほど電圧は低く、温度が高くなるにつれて
電圧は高くなるように変化し、また、電池が放出する電
流の大きさによる電池電圧の低下の程度も図８（Ｂ）に
示すように変化する。これは電池の内部抵抗が、図８
（Ｃ）に示すように、電池の内部抵抗は、電池の温度が
ある程度の値までは大きく減少し、その後はなだらかに
減少するように変化するためである。[0004] However, depending on the temperature of the battery, the relationship between the remaining amount of the battery and the voltage is, as shown in FIG. 8 (A), the lower the temperature is, the lower the voltage is for the same remaining amount. 8B, and the degree of decrease in battery voltage due to the magnitude of the current emitted by the battery also changes as shown in FIG. This is because the internal resistance of the battery
As shown in (C), the internal resistance of the battery changes so that the temperature of the battery greatly decreases to a certain value, and thereafter gradually decreases.
【０００５】また、電池が新旧かにより、即ち充放電回
数により、電池の残量と電圧の関係は、図９（Ａ）に示
すように、同じ残量に対して充放電回数が多いほど電圧
は低く、充放電回数が少なくなるにつれて電圧は高くな
るように変化し、また、電池が放出する電流の大きさに
よる電池電圧の低下の程度も図９（Ｂ）に示すように、
電池の新旧、即ち充放電回数により変化する。これは電
池の内部抵抗が、図９（Ｃ）に示すように、電池の充放
電回数にほぼ比例して変化するためである。このよう
に、電池の電圧も温度、充放電回数によっても変化し、
間違った判定をしてしまう場合があった。[0005] Further, depending on whether the battery is new or old, that is, depending on the number of times of charging and discharging, the relationship between the remaining amount of the battery and the voltage is, as shown in FIG. Is low, and the voltage changes so as to increase as the number of times of charging / discharging decreases. Further, as shown in FIG.
It changes according to the old and new of the battery, that is, the number of times of charging and discharging. This is because the internal resistance of the battery changes almost in proportion to the number of times of charging and discharging of the battery as shown in FIG. Thus, the voltage of the battery also changes depending on the temperature and the number of times of charging and discharging,
In some cases, the wrong decision was made.
【０００６】[0006]
【発明が解決しようとする課題】そこで本発明は、放電
制御装置あるいは充電制御装置を介して電池を放電ある
いは充電制御するものにおいて、電池（バッテリ）の温
度又は充放電回数（新旧）あるいは内部抵抗により電池
残量の判定値（所定値）を補正して正確な電池残量を判
定することができる電池残量検出装置を得ることを目的
とする。SUMMARY OF THE INVENTION Accordingly, the present invention relates to a method for controlling the discharge or charge of a battery through a discharge control device or a charge control device. It is an object of the present invention to obtain a battery remaining amount detecting device capable of correcting a battery remaining amount determination value (predetermined value) to accurately determine a battery remaining amount.
【０００７】[0007]
【課題を解決するための手段】この発明の請求項１に係
る電池残量検出装置は、放電制御装置あるいは充電制御
装置を介して電池を放電あるいは充電制御するものであ
って、電池の電圧及び電流をそれぞれ検出する電圧セン
サ及び電流センサの出力により電池残量を判定する電池
残量判定装置を有し、電池の温度を検出する温度検出装
置の出力により前記電池残量判定装置の判定値を補正す
るように構成した。According to a first aspect of the present invention, there is provided a battery remaining amount detecting device for controlling discharge or charge of a battery through a discharge control device or a charge control device. A battery level determining device that determines the remaining battery level based on the output of the voltage sensor and the current sensor that respectively detect the current, and determines the determination value of the battery level determining apparatus based on the output of the temperature detecting device that detects the temperature of the battery. It was configured to correct.
【０００８】こうして、電池の温度の影響による間違っ
た判定がなされるので、電池の近傍に温度検出装置を配
置し、電池の温度を検出して電池残量判定装置に供給す
ることにより電池残量の判定値を適正に補正する。In this way, an erroneous determination is made due to the influence of the battery temperature. Therefore, a temperature detecting device is disposed near the battery, and the battery temperature is detected and supplied to the battery remaining amount determining device. Is appropriately corrected.
【０００９】この発明の請求項２に係る電池残量検出装
置は、放電制御装置あるいは充電制御装置を介して電池
を放電あるいは充電制御するものであって、電池の電圧
及び電流をそれぞれ検出する電圧センサ及び電流センサ
の出力により電池残量を判定する電池残量判定装置を有
し、電池の充放電回数により前記電池残量判定装置の判
定値を補正するように構成した。According to a second aspect of the present invention, there is provided a battery remaining amount detecting device for controlling the discharging or charging of a battery via a discharging control device or a charging controlling device. A battery remaining amount determining device for determining the remaining battery amount based on the outputs of the sensor and the current sensor is provided, and the determination value of the battery remaining amount determining device is corrected based on the number of times of charging and discharging of the battery.
【００１０】こうして、電池の充放電回数による影響を
補正するために、電池残量判定装置に外部より充放電回
数設定値を与えて充放電回数の少ない時（新）と、多い
時（旧）との内部抵抗の変化による影響を補正して適正
な電池残量の判定を行うことができる。In this way, in order to correct the influence of the number of times of charging and discharging of the battery, a set value of the number of times of charging and discharging is given to the battery remaining amount judging device from the outside, and the number of times of charging and discharging is small (new) and large (old). Thus, the influence of the change in the internal resistance can be corrected, and the appropriate remaining battery level can be determined.
【００１１】この発明の請求項３に係る電池残量検出装
置は、放電制御装置あるいは充電制御装置を介して電池
を放電あるいは充電制御するものであって、電池の電圧
及び電流をそれぞれ検出する電圧センサ及び電流センサ
の出力により電池残量を判定する電池残量判定装置にお
いて、電池の温度を検出する温度検出装置の出力と電池
の充放電回数により電池残量判定装置の判定値を補正す
るように構成した。According to a third aspect of the present invention, there is provided a battery remaining amount detecting device for controlling discharging or charging of a battery via a discharging control device or a charging controlling device. In a battery remaining amount determination device that determines a battery remaining amount based on outputs of a sensor and a current sensor, a determination value of the battery remaining amount determination device is corrected based on an output of a temperature detection device that detects a battery temperature and the number of times of charging and discharging of the battery. Configured.
【００１２】こうして、電池の温度と電池の放電回数の
影響による間違った判定がなされるので、電池の近傍に
温度検出装置を配置し、電池の温度を検出して電池残量
判定装置に供給し、また電池残量判定装置に外部より充
放電回数設定値を与えて充放電回数の少ない時（新）
と、多い時（旧）との内部抵抗の変化による影響を補正
することにより電池残量の判定値を適正に補正すること
ができる。In this way, an erroneous determination is made due to the influence of the battery temperature and the number of times the battery has been discharged. Therefore, a temperature detecting device is arranged near the battery to detect the temperature of the battery and supply it to the battery remaining amount determining device. In addition, when the number of charge / discharge times is given to the battery remaining amount judgment device from outside, and the number of charge / discharge times is small (new)
By correcting the influence of the change in the internal resistance when the battery is large (old), the determination value of the remaining battery level can be properly corrected.
【００１３】この発明の請求項４に係る電池残量検出装
置は、放電制御装置あるいは充電制御装置を介して電池
を放電あるいは充電制御するものであって、電池の電圧
及び電流をそれぞれ検出する電圧センサ及び電流センサ
の出力により電池残量を判定する電池残量判定装置を有
し、電圧センサ及び電流センサの出力に基づいて電池の
内部抵抗を演算する内部抵抗演算装置の出力により電池
残量判定装置の判定値を補正するように構成した。According to a fourth aspect of the present invention, there is provided a battery remaining amount detecting device for controlling the discharging or charging of a battery via a discharging control device or a charging controlling device, wherein the voltage detecting device detects the voltage and the current of the battery, respectively. It has a battery level determining device that determines the battery level based on the outputs of the sensor and the current sensor, and determines the battery level based on the output of an internal resistance calculating device that calculates the internal resistance of the battery based on the outputs of the voltage sensor and the current sensor. The apparatus is configured to correct the determination value of the device.
【００１４】こうして、温度や充放電回数（新旧）で電
池残量の判定値を補正するのは内部抵抗が異なることに
基因するので、電池の電圧、電流より内部抵抗を検出
し、電池残量の判定値を補正することにより、バッテリ
の周囲温度、充放電回数（新旧）が違う場合でも適正に
判定することができる。[0014] Since the determination value of the remaining battery level is corrected based on the temperature and the number of times of charge / discharge (new or old) because the internal resistance is different, the internal resistance is detected from the voltage and current of the battery, and the remaining battery level is detected. Can be properly determined even when the ambient temperature of the battery and the number of times of charging and discharging (new and old) are different.
【００１５】[0015]
【発明の実施の形態】次に、本発明の電池残量判定装置
について図面を参照して以下に説明する。図１は電池か
ら負荷に電力を放電供給する実施形態を示すブロック図
であり、図２は電池に電源より充電する実施形態を示す
ブロック図である。この実施形態は電池の温度又は充放
電回数あるいは電池の温度及び充放電回数により判定値
を補正する場合について示している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a battery remaining amount judging device according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment in which power is discharged from a battery to a load, and FIG. 2 is a block diagram showing an embodiment in which a battery is charged from a power supply. This embodiment shows a case where the determination value is corrected based on the battery temperature or the number of times of charge / discharge or the temperature of the battery and the number of times of charge / discharge.
【００１６】図１において、１は電池（バッテリ）、１
１は電池温度を検出する温度検出装置、２は制御回路で
あり放電制御装置２１、電池残量判定装置２２、電池の
電圧及び電流をそれぞれ検出する電圧センサ２３、電流
センサ２４から構成される。３は負荷、電池残量判定装
置２２には外部より充放電回数設定値が設定可能にされ
ている。In FIG. 1, 1 is a battery (battery), 1
Reference numeral 1 denotes a temperature detecting device for detecting a battery temperature, and 2 denotes a control circuit, which includes a discharge control device 21, a battery remaining amount determining device 22, a voltage sensor 23 for detecting a voltage and a current of the battery, and a current sensor 24, respectively. Reference numeral 3 denotes a load, and the number-of-charges / discharges setting value can be set in the battery remaining amount determination device 22 from outside.
【００１７】このように構成された電池（バッテリ）の
放電時の動作について説明する。電池１は制御回路２の
放電制御装置２１により電圧、電流が調整されて負荷３
に所定の電力を供給する。この時、電池１の電圧、電流
を電圧センサ２３、電流センサ２４により検出し、電池
残量判定装置２２に供給する。The operation at the time of discharging the battery (battery) thus configured will be described. The voltage and current of the battery 1 are adjusted by the discharge control device 21 of the control circuit 2 so that the load 3
Is supplied with a predetermined power. At this time, the voltage and current of the battery 1 are detected by the voltage sensor 23 and the current sensor 24, and are supplied to the battery remaining amount determining device 22.
【００１８】電池残量判定装置２２には図１０（Ｃ）に
示す電圧、電流の関係により決定される判定値がテーブ
ルデータとして記憶されており、電圧センサ２３、電流
センサ２４の出力により電池残量を求め、電池残量が所
定値基準値（この実施例では残量５０％とした）以上で
あるかどうかを判定する。A determination value determined based on the relationship between the voltage and the current shown in FIG. 10C is stored in the battery remaining amount determination device 22 as table data. The amount is obtained, and it is determined whether the remaining battery level is equal to or greater than a predetermined reference value (in this embodiment, the remaining battery level is 50%).
【００１９】これでは上記した電池の温度の影響による
間違った判定がなされるので、本発明ではこれを補正す
るために、温度については電池１の近傍に温度検出装置
１１を配置し、電池の温度を検出して電池残量判定装置
２２に供給することにより電池残量を補正する。In this case, an erroneous determination is made due to the influence of the battery temperature described above. In the present invention, in order to correct this, a temperature detecting device 11 is disposed near the battery 1 and the battery temperature is corrected. Is detected and supplied to the remaining battery level determination device 22 to correct the remaining battery level.
【００２０】また、電池の放電回数による影響を補正す
るためには、電池残量判定装置２２に外部より放電回数
設定値を与えて放電回数の少ない時（新）と、多い時
（旧）との内部抵抗の変化による影響を補正して適正な
電池残量の判定を行う。Further, in order to correct the influence of the number of discharges of the battery, the set value of the number of discharges is given from the outside to the battery remaining amount judging device 22 so that the number of discharges is small (new) and large (old). And correct the remaining battery charge by correcting the effect of the change in the internal resistance of the battery.
【００２１】図２は電池に電源より充電する実施形態を
示すものであり、図１と異なるのは負荷３に代えて電源
４を設け、制御回路２の放電制御装置２１に代わり充電
制御装置２５を用いることであり、他は図１におけるも
のと同一の回路要素には同一の符号を付している。FIG. 2 shows an embodiment in which a battery is charged from a power supply. The difference from FIG. 1 is that a power supply 4 is provided in place of the load 3, and a charge control device 25 is provided in place of the discharge control device 21 of the control circuit 2. The same circuit elements as those in FIG. 1 are denoted by the same reference numerals.
【００２２】このように構成された電池（バッテリ）の
充電時の動作について説明する。電源４は制御回路２の
充電制御装置２５により電圧、電流が調整されて電池１
に所定の充電電力を供給する。この時、電池１の電圧、
電流を電圧センサ２３、電流センサ２４により検出し、
電池残量判定装置２２に供給する。The operation at the time of charging the battery (battery) configured as described above will be described. The voltage and current of the power supply 4 are adjusted by the charge control device 25 of the control circuit 2 so that the battery 1
Is supplied with predetermined charging power. At this time, the voltage of the battery 1,
The current is detected by the voltage sensor 23 and the current sensor 24,
It is supplied to the battery remaining amount determining device 22.
【００２３】放電時と同様に、電池残量判定装置２２に
は図１０（Ｃ）に示す電圧、電流の関係により決定され
る判定値がテーブルデータとして記憶されており、電圧
センサ２３、電流センサ２４の出力により電池残量を求
め、電池残量が所定値基準値（この実施例では残量５０
％とした）以上であるかどうかを判定する。As in the case of discharging, the battery level determining device 22 stores determination values determined by the relationship between voltage and current shown in FIG. 10C as table data. 24, the remaining amount of the battery is obtained, and the remaining amount of the battery is set to a predetermined value reference value (in this embodiment, the remaining amount of the battery is 50%).
%) Is determined.
【００２４】これでは上記した電池の温度又は充放電回
数の影響による間違った判定がなされるので、本発明で
はこれを補正するために、温度については電池１の近傍
に温度検出装置１１を配置し、電池の温度を検出して電
池残量判定装置２２に供給することにより電池残量を補
正する。In this case, an erroneous determination is made due to the influence of the temperature of the battery or the number of times of charge / discharge. Therefore, in order to correct this, in the present invention, the temperature detector 11 is disposed near the battery 1 for the temperature. The battery remaining amount is corrected by detecting the temperature of the battery and supplying it to the battery remaining amount determining device 22.
【００２５】また、電池の充電回数による影響を補正す
るためには、電池残量判定装置２２に外部より充電回数
設定値を与えて充電回数の少ない時（新）と、多い時
（旧）との内部抵抗の変化による影響を補正して適正な
電池残量の判定を行う。In order to correct the influence of the number of times of charging of the battery, a setting value of the number of times of charging is given from the outside to the battery remaining amount judging device 22 to determine whether the number of times of charging is small (new) or large (old). And correct the remaining battery charge by correcting the effect of the change in the internal resistance of the battery.
【００２６】次に、電池の温度又は充放電回数の判定値
に与える影響を補正する電池残量判定装置の制御フロー
について説明する。Next, a description will be given of a control flow of the battery remaining amount judging device for correcting the influence on the judgment value of the battery temperature or the number of times of charge / discharge.
【００２７】〈温度によって判定値を補正する場合〉図
３は温度によって判定値を補正する場合の制御フローを
示す。図において、補正動作がステップＳ１でスタート
すると、ステップＳ２で電圧センサ２３により検出され
た電池電圧Ｖが入力される。次に、ステップＳ３おいて
電流センサ２４により検出した電池電流Ｉが入力され
る。<Case of Correcting Judgment Value by Temperature> FIG. 3 shows a control flow in the case of correcting a judgment value by temperature. In the figure, when the correction operation starts in step S1, the battery voltage V detected by the voltage sensor 23 in step S2 is input. Next, the battery current I detected by the current sensor 24 in step S3 is input.
【００２８】続いて、ステップＳ４において電池残量判
定装置２２には図１０（Ｃ）に示す電圧、電流の関係に
より決定される判定値がテーブルデータとして設定され
ており、入力された電圧Ｖ、電流Ｉにより電池残量判定
値ＶZ を求める。このままでは上記した電池の温度の影
響による間違った判定がなされるので、判定値を補正す
るために、次のステップＳ５において、温度検出装置１
１が検出する電池温度Ｔを入力する。Subsequently, in step S4, a determination value determined based on the relationship between the voltage and current shown in FIG. 10C is set as table data in the battery remaining amount determination device 22, and the input voltage V, determining battery power determination value V Z by the current I. In this state, an erroneous determination is made due to the influence of the battery temperature described above. Therefore, in order to correct the determination value, in the next step S5, the temperature detector 1
1 inputs the battery temperature T detected.
【００２９】ステップＳ６で、電池残量判定装置２２
は、図８（Ａ）の特性に基づいて、現在の温度による電
圧を電池温度が２５℃の時の電圧に換算して、図８
（Ｂ）の電圧、電流特性により決まるデータテーブルに
基づいて電池残量の補正量ｂを決定する。ここで、電池
温度が２５℃の時に、残量判定基準はｂ＝０となるよう
に設定されている。In step S6, the remaining battery charge determining device 22
Is based on the characteristics of FIG. 8A, converting the voltage based on the current temperature into the voltage when the battery temperature is 25 ° C.
The correction amount b of the remaining battery level is determined based on the data table determined by the voltage and current characteristics in (B). Here, when the battery temperature is 25 ° C., the remaining amount determination criterion is set so that b = 0.
【００３０】そして、ステップＳ７おいて、ステップＳ
４で設定された判定値ＶZ にステップＳ６で求めた補正
量ｂを加算して新判定値ＶK ＝ＶZ ＋ｂが求められる。
以上のステップＳ２〜Ｓ７の処理が繰り返し遂行され
る。新判定値ＶK はステップＳ８で表示又は報知手段
（図示せず）に出力される。この結果、電池の使用者は
補正された適正な電池残量値を確認することができる。Then, in step S7, step S
The set determination value V Z at 4 by adding the correction amount b determined in step S6 new determination value V K = V Z + b is obtained.
The processing of steps S2 to S7 is repeatedly performed. The new determination value VK is output to a display or notification means (not shown) in step S8. As a result, the user of the battery can check the corrected appropriate remaining battery value.
【００３１】〈充放電回数によって判定値を補正する場
合〉図４は温度によって判定値を補正する場合の制御フ
ローを示す。図において、補正動作がステップＳ１１で
スタートすると、ステップＳ１２で電圧センサ２３によ
り検出された電池電圧Ｖが入力される。次に、ステップ
Ｓ１３おいて電流センサ２４により検出した電池電流Ｉ
が入力される。<Case of Correcting Judgment Value Based on Number of Charges and Discharges> FIG. 4 shows a control flow in a case where the judgment value is corrected by temperature. In the figure, when the correction operation starts in step S11, the battery voltage V detected by the voltage sensor 23 in step S12 is input. Next, the battery current I detected by the current sensor 24 in step S13
Is entered.
【００３２】続いて、ステップＳ１４において電池残量
判定装置２２には図１０（Ｃ）に示す電圧、電流の関係
により決定される判定値がテーブルデータとして設定さ
れており、入力された電圧Ｖ、電流Ｉにより電池残量判
定値ＶZ を求める。このままでは上記した電池の充放電
回数の影響による間違った判定がなされるので、判定値
を補正するために、次のステップＳ１５において、電池
残量判定装置２２には充放電回数Ｎを、例えば５０回単
位で設定して設定値として入力する。Subsequently, in step S14, a determination value determined based on the relationship between the voltage and the current shown in FIG. determining battery power determination value V Z by the current I. In this state, an erroneous determination is made due to the influence of the number of times of charge / discharge of the battery described above. Therefore, in order to correct the determination value, in the next step S15, the number of times N of charge / discharge is supplied to the battery remaining amount determination device 22. Set the number of times and enter it as a set value.
【００３３】ステップＳ１６で、電池残量判定装置２２
は、図９（Ａ）の特性に基づいて、現在の充放電回数に
よる電圧を充放電回数Ｎが、例えば５０回の時の電圧に
換算して、図９（Ｂ）の電圧、電流特性により決まるデ
ータテーブルに基づいて電池残量の補正量ｂを決定す
る。ここで、充放電回数Ｎが５０回の時に、残量判定基
準はｂ＝０となるように設定されている。In step S16, the remaining battery charge determining device 22
Is obtained by converting the voltage based on the current number of times of charge / discharge into a voltage when the number of times of charge / discharge N is, for example, 50 based on the characteristics of FIG. The correction amount b of the remaining battery level is determined based on the determined data table. Here, when the number N of times of charging / discharging is 50, the remaining amount determination criterion is set so that b = 0.
【００３４】そして、ステップＳ１７おいて、ステップ
Ｓ１４で設定された判定値ＶZ にステップＳ１６で求め
た補正量ｂを加算して新判定値ＶK ＝ＶZ ＋ｂが求めら
れる。新判定値ＶK はステップＳ１８で表示又は報知手
段（図示せず）に出力される。この結果、電池の使用者
は補正された適正な電池残量値を確認することができ
る。Then, in step S17, a new judgment value V K = V Z + b is obtained by adding the correction amount b obtained in step S16 to the judgment value V Z set in step S14. New decision value V K is output to the display or notification means at step S18 (not shown). As a result, the user of the battery can check the corrected appropriate remaining battery value.
【００３５】以上は、電池の温度又は充放電回数の個別
の要素が判定値に与える影響を補正する電池残量判定装
置の制御フローについて説明したが、制御フローは省略
したが、電池の温度及び充放電回数の両方の要素を加味
して電池残量の判定値を補正することも可能である。In the above, the control flow of the battery remaining amount judging device for correcting the influence of the individual element of the battery temperature or the number of times of charge and discharge on the judgment value has been described. It is also possible to correct the determination value of the remaining battery level in consideration of both factors of the number of times of charging and discharging.
【００３６】〈内部抵抗によって判定値を補正する場
合〉本来、温度や充放電回数（新旧）で電池残量の判定
値を補正するのは内部抵抗が異なるためである。そこ
で、電池の電圧、電流より内部抵抗を検出し、電池残量
の判定値を補正することにより、バッテリの周囲温度、
充放電回数（新旧）が違う場合でも適正に判定する装置
について次に図を参照して説明する。<Case of Correcting Judgment Value Based on Internal Resistance> Originally, the judgment value of the remaining battery level is corrected depending on the temperature and the number of times of charging / discharging (new or old) because the internal resistance is different. Therefore, by detecting the internal resistance from the voltage and current of the battery and correcting the determination value of the remaining battery level, the ambient temperature of the battery,
Next, an apparatus for appropriately determining whether the number of times of charging and discharging (new and old) is different will be described with reference to the drawings.
【００３７】図５は電池から負荷に電力を放電供給する
実施形態を示すブロック図であり、図６は電池に電源よ
り充電する実施形態を示すブロック図である。この実施
形態は電池の内部抵抗により判定値を補正する場合につ
いて示している。FIG. 5 is a block diagram showing an embodiment in which power is discharged from a battery to a load, and FIG. 6 is a block diagram showing an embodiment in which a battery is charged from a power supply. This embodiment shows a case where the determination value is corrected based on the internal resistance of the battery.
【００３８】図５、図６において、図１、図２における
ものと同一の回路要素には同一の符号を付しているので
説明は省略する。制御回路２には電圧センサ２３、電流
センサ２４の出力に基づき電池の内部抵抗を演算する内
部抵抗演算装置２６を設ける。In FIGS. 5 and 6, the same circuit elements as those in FIGS. 1 and 2 are denoted by the same reference numerals, and their description is omitted. The control circuit 2 is provided with an internal resistance calculator 26 for calculating the internal resistance of the battery based on the outputs of the voltage sensor 23 and the current sensor 24.
【００３９】このように構成された電池（バッテリ）の
放電時の動作について説明する。電池１は制御回路２の
放電制御装置２１により電圧、電流が調整されて負荷３
に所定の電力を供給する。この時、電池１の電圧、電流
を電圧センサ２３、電流センサ２４により検出し、電池
残量判定装置２２に供給する。The operation at the time of discharging a battery (battery) configured as described above will be described. The voltage and current of the battery 1 are adjusted by the discharge control device 21 of the control circuit 2 so that the load 3
Is supplied with a predetermined power. At this time, the voltage and current of the battery 1 are detected by the voltage sensor 23 and the current sensor 24, and are supplied to the battery remaining amount determining device 22.
【００４０】電池残量判定装置２２には図１０（Ｃ）に
示す電圧、電流の関係により決定される判定値がテーブ
ルデータとして記憶されており、電圧センサ２３、電流
センサ２４の出力により電池残量を求め、電池残量が所
定値基準値（この実施例では残量５０％とした）以上で
あるかどうかを判定する。A determination value determined based on the relationship between the voltage and the current shown in FIG. 10C is stored in the battery remaining amount determination device 22 as table data, and the battery remaining amount is determined based on the outputs of the voltage sensor 23 and the current sensor 24. The amount is obtained, and it is determined whether the remaining battery level is equal to or greater than a predetermined reference value (in this embodiment, the remaining battery level is 50%).
【００４１】これでは電池の温度又は充放電回数の影響
による間違った判定がなされるので、本発明ではこれを
補正するために、電池の電圧、電流より内部抵抗演算装
置２６が内部抵抗ｒを演算し、この内部抵抗値により電
池残量の判定値を補正する。In this case, an erroneous determination is made due to the influence of the temperature of the battery or the number of times of charge and discharge. In the present invention, in order to correct this, the internal resistance calculator 26 calculates the internal resistance r from the battery voltage and current. Then, the determination value of the remaining battery level is corrected based on the internal resistance value.
【００４２】図６は電池に電源より充電する実施形態を
示すものであり、図５と異なるのは負荷３に代えて電源
４を設け、制御回路２の放電制御装置２１に代わり充電
制御装置２５を用いることであり、他は図５におけるも
のと同一の回路要素には同一の符号を付している。FIG. 6 shows an embodiment in which a battery is charged from a power supply. The difference from FIG. 5 is that a power supply 4 is provided in place of the load 3, and a charge control device 25 is provided in place of the discharge control device 21 of the control circuit 2. The same circuit elements as those in FIG. 5 are denoted by the same reference numerals.
【００４３】このように構成された電池（バッテリ）の
充電時の動作について説明する。電源４は制御回路２の
充電制御装置２５により電圧、電流が調整されて電池１
に所定の充電電力を供給する。この時、電池１の電圧、
電流を電圧センサ２３、電流センサ２４により検出し、
電池残量判定装置２２に供給する。The operation at the time of charging the battery (battery) thus configured will be described. The voltage and current of the power supply 4 are adjusted by the charge control device 25 of the control circuit 2 so that the battery 1
Is supplied with predetermined charging power. At this time, the voltage of the battery 1,
The current is detected by the voltage sensor 23 and the current sensor 24,
It is supplied to the battery remaining amount determining device 22.
【００４４】放電時と同様に、電池残量判定装置２２に
は図１０（Ｃ）に示す電圧、電流の関係により決定され
る判定値がテーブルデータとして記憶されており、電圧
センサ２３、電流センサ２４の出力により電池残量を求
め、電池残量が所定値基準値（この実施例では残量５０
％とした）以上であるかどうかを判定する。このままで
は放電時と同様に電池の温度又は充放電回数の影響によ
る間違った判定がなされるので、本発明ではこれを電池
の電圧、電流より内部抵抗演算装置２６が内部抵抗ｒを
演算し、この内部抵抗値に基づいて電池残量の判定値を
補正する。As in the case of discharging, the battery level determining device 22 stores determination values determined by the relationship between voltage and current shown in FIG. 10C as table data. 24, the remaining amount of the battery is obtained, and the remaining amount of the battery is set to a predetermined value reference value (in this embodiment, the remaining amount of the battery is 50%).
%) Is determined. In this state, as in the case of discharging, an erroneous determination is made due to the influence of the battery temperature or the number of times of charging and discharging. In the present invention, the internal resistance calculating device 26 calculates the internal resistance r from the battery voltage and current. The determination value of the remaining battery level is corrected based on the internal resistance value.
【００４５】次に、内部抵抗の判定値に与える影響を補
正する電池残量判定装置の制御フローについて説明す
る。図７において、ステップＳ２１で補正動作がスター
トすると、ステップＳ２２で電圧センサ２３により検出
された電池電圧Ｖが入力される。次に、ステップＳ２３
おいて電流センサ２４により検出した電池電流Ｉが入力
される。Next, a description will be given of a control flow of the battery remaining amount judging device for correcting the influence on the judgment value of the internal resistance. In FIG. 7, when the correction operation starts in step S21, the battery voltage V detected by the voltage sensor 23 is input in step S22. Next, step S23
In this case, the battery current I detected by the current sensor 24 is input.
【００４６】続いて、ステップＳ２４において電池残量
判定装置２２には図１０（Ｃ）に示す電圧、電流の関係
により決定される判定値がテーブルデータとして設定さ
れており、入力された電圧Ｖ、電流Ｉにより電池残量判
定値ＶZ を求める。これでは電池の内部抵抗の影響によ
る間違った判定がなされるので、判定値を補正するため
に、次のステップＳ２５において、内部抵抗演算装置２
６が電圧Ｖ、電流Ｉにより電池の内部抵抗ｒを算出す
る。Subsequently, in step S24, the determination value determined based on the relationship between the voltage and the current shown in FIG. determining battery power determination value V Z by the current I. In this case, an erroneous determination is made due to the effect of the internal resistance of the battery. Therefore, in order to correct the determination value, in the next step S25, the internal resistance calculating device 2
6 calculates the internal resistance r of the battery from the voltage V and the current I.
【００４７】ステップＳ２６で、電池残量判定装置２２
は、図８（Ｃ）及び図９（Ｃ）の特性を参照して、図８
（Ｂ）、図９（Ｂ）の電圧、電流特性により決まるデー
タテーブルに基づいて電池残量の補正量ｂを決定する。
ここで、電池残量５０％の時に、残量判定基準はｂ＝０
となるように設定されている。In step S26, the remaining battery charge determining device 22
8C with reference to the characteristics of FIGS. 8C and 9C.
(B), the correction amount b of the battery remaining amount is determined based on the data table determined by the voltage and current characteristics in FIG. 9B.
Here, when the remaining battery level is 50%, the remaining capacity determination criterion is b = 0.
It is set to be.
【００４８】そして、ステップＳ２７おいて、ステップ
Ｓ２４で設定された判定値ＶZ にステップＳ２６で求め
た補正量ｂを加算して新判定値ＶK ＝ＶZ ＋ｂが求めら
れる。以上のステップＳ２２〜Ｓ２７の処理が繰り返し
遂行される。新判定値ＶK はステップＳ２８で表示又は
報知手段（図示せず）に出力される。この結果、電池の
使用者は補正された適正な電池残量値を確認することが
できる。Then, in step S27, a new determination value V K = V Z + b is obtained by adding the correction amount b obtained in step S26 to the determination value V Z set in step S24. The processes of steps S22 to S27 are repeatedly performed. New decision value V K is output to the display or notification means at step S28 (not shown). As a result, the user of the battery can check the corrected appropriate remaining battery value.
【００４９】[0049]
【発明の効果】以上のように本発明の電池残量検出装置
は、電池の温度と電池の放電回数の影響による間違った
判定がなされるので、電池の近傍に温度検出装置を配置
し、電池の温度を検出して電池残量判定装置に供給し、
また電池残量判定装置に外部より充放電回数設定値を与
えて充放電回数の少ない時（新）と、多い時（旧）との
内部抵抗の変化による影響を補正することにより電池残
量の判定値を適正に補正することができる。As described above, in the battery residual quantity detecting device of the present invention, an erroneous determination is made due to the influence of the battery temperature and the number of times of discharging of the battery. And supplies it to the battery level determination device,
In addition, the set value of the number of times of charge / discharge is given from the outside to the battery remaining amount judging device, and the influence of the change in the internal resistance between when the number of times of charge / discharge is small (new) and when it is large (old) is corrected. The determination value can be appropriately corrected.
【００５０】また、温度や充放電回数（新旧）で電池残
量の判定値を補正するのは内部抵抗が異なることに基因
するので、電池の電圧、電流より内部抵抗を検出し、電
池残量の判定値を補正することにより、バッテリの周囲
温度、充放電回数（新旧）が違う場合でも適正に判定す
ることができる。Further, the reason why the judgment value of the remaining battery level is corrected based on the temperature and the number of times of charging / discharging (new or old) is that the internal resistance is different, so that the internal resistance is detected from the voltage and current of the battery and the remaining battery level is detected. Can be properly determined even when the ambient temperature of the battery and the number of times of charging and discharging (new and old) are different.
【図１】本発明の放電時の温度、放電回数による補正の
ブロック図。FIG. 1 is a block diagram of correction according to the temperature and the number of times of discharge according to the present invention.
【図２】本発明の充電時の温度、充電回数による補正の
ブロック図。FIG. 2 is a block diagram of a correction according to the temperature and the number of times of charging according to the present invention.
【図３】温度によって電池残量判定値を補正する制御フ
ロー。FIG. 3 is a control flow for correcting a battery remaining amount determination value based on temperature.
【図４】充放電回数によって電池残量判定値を補正する
制御フロー。FIG. 4 is a control flow for correcting a battery remaining amount determination value according to the number of times of charge and discharge.
【図５】本発明の放電時の内部抵抗による補正のブロッ
ク図。FIG. 5 is a block diagram of correction by an internal resistance at the time of discharge according to the present invention.
【図６】本発明の充電時の内部抵抗による補正のブロッ
ク図。FIG. 6 is a block diagram of correction by an internal resistance during charging according to the present invention.
【図７】内部抵抗によって電池残量判定値を補正する制
御フロー。FIG. 7 is a control flow for correcting a battery remaining amount determination value by an internal resistance.
【図８】電池温度と電池残量判定値の関係図。FIG. 8 is a diagram illustrating a relationship between a battery temperature and a battery remaining amount determination value.
【図９】充放電回数と電池残量判定値の関係図。FIG. 9 is a diagram illustrating a relationship between the number of times of charging and discharging and a remaining battery level determination value.
【図１０】従来の電池残量判定値の関係図。FIG. 10 is a relationship diagram of a conventional battery remaining amount determination value.
１ 電池（バッテリ） ２ 制御回路 ３ 負荷 ４ 電源 １１ 温度検出装置 ２１ 放電制御装置 ２２ 電池残量判定装置 ２３ 電圧センサ ２４ 電流センサ ２５ 充電制御装置 ２６ 内部抵抗演算装置 DESCRIPTION OF SYMBOLS 1 Battery (battery) 2 Control circuit 3 Load 4 Power supply 11 Temperature detection device 21 Discharge control device 22 Battery remaining amount determination device 23 Voltage sensor 24 Current sensor 25 Charge control device 26 Internal resistance calculation device
Claims (4)
して電池を放電あるいは充電制御するものであって、電
池の電圧及び電流をそれぞれ検出する電圧センサ及び電
流センサの出力により電池残量を判定する電池残量判定
装置を有し、電池の温度を検出する温度検出装置の出力
により前記電池残量判定装置の判定値を補正することを
特徴とする電池残量検出装置。1. A battery control device for discharging or charging a battery through a discharge control device or a charge control device, wherein a remaining battery level is determined based on outputs of a voltage sensor and a current sensor for detecting a voltage and a current of the battery, respectively. A battery remaining amount detecting device comprising a battery remaining amount determining device, wherein the determination value of the battery remaining amount determining device is corrected based on an output of a temperature detecting device detecting a battery temperature.
して電池を放電あるいは充電制御するものであって、電
池の電圧及び電流をそれぞれ検出する電圧センサ及び電
流センサの出力により電池残量を判定する電池残量判定
装置を有し、電池の充放電回数により前記電池残量判定
装置の判定値を補正することを特徴とする電池残量検出
装置。2. A battery control device for discharging or charging a battery via a discharge control device or a charge control device, wherein a remaining battery level is determined based on outputs of a voltage sensor and a current sensor for detecting a voltage and a current of the battery, respectively. A battery remaining amount detecting device, comprising a battery remaining amount determining device, wherein the determination value of the battery remaining amount determining device is corrected based on the number of times of charging and discharging of the battery.
して電池を放電あるいは充電制御するものであって、電
池の電圧及び電流をそれぞれ検出する電圧センサ及び電
流センサの出力により電池残量を判定する電池残量判定
装置において、電池の温度を検出する温度検出装置の出
力と電池の充放電回数により電池残量判定装置の判定値
を補正することを特徴とする電池残量検出装置。3. A battery control device for discharging or charging a battery via a discharge control device or a charge control device, wherein a remaining battery level is determined based on outputs of a voltage sensor and a current sensor for detecting a voltage and a current of the battery, respectively. A battery remaining amount detecting device for correcting a determination value of a battery remaining amount determining device based on an output of a temperature detecting device for detecting a temperature of a battery and the number of times of charging and discharging of the battery.
して電池を放電あるいは充電制御するものであって、電
池の電圧及び電流をそれぞれ検出する電圧センサ及び電
流センサの出力により電池残量を判定する電池残量判定
装置を有し、電圧センサ及び電流センサの出力に基づい
て電池の内部抵抗を演算する内部抵抗演算装置の出力に
より電池残量判定装置の判定値を補正することを特徴と
する電池残量検出装置。4. A battery discharge or charge control via a discharge control device or a charge control device, wherein a remaining battery level is determined based on outputs of a voltage sensor and a current sensor for detecting a voltage and a current of the battery, respectively. A battery having a battery remaining amount determining device, wherein the determination value of the battery remaining amount determining device is corrected by an output of an internal resistance calculating device that calculates an internal resistance of the battery based on outputs of the voltage sensor and the current sensor. Remaining amount detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9343936A JPH11162524A (en) | 1997-11-29 | 1997-11-29 | Battery residual capacity detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9343936A JPH11162524A (en) | 1997-11-29 | 1997-11-29 | Battery residual capacity detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11162524A true JPH11162524A (en) | 1999-06-18 |
Family
ID=18365395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9343936A Withdrawn JPH11162524A (en) | 1997-11-29 | 1997-11-29 | Battery residual capacity detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11162524A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001015179A (en) * | 1999-06-30 | 2001-01-19 | Matsushita Electric Ind Co Ltd | Secondary battery residual quantity display method and portable electronic device with secondary battery residual quantity display method |
| JP2001103671A (en) * | 1999-09-30 | 2001-04-13 | Sanyo Electric Co Ltd | Battery remainder-displaying device for telephone machine |
| JP2001126773A (en) * | 1999-10-28 | 2001-05-11 | Sanyo Electric Co Ltd | Method of charging secondary battery |
| KR20020090755A (en) * | 2001-05-29 | 2002-12-05 | 주식회사 이랜텍 | Method for calibration remain capacity of smart battery |
| US6920404B2 (en) | 2000-09-28 | 2005-07-19 | Japan Storage Battery Co., Ltd. | Method of detecting residual capacity of secondary battery |
| EP1689017A1 (en) * | 2004-12-13 | 2006-08-09 | Matsushita Electric Industrial Co., Ltd. | Battery pack |
| WO2006096002A1 (en) * | 2005-03-09 | 2006-09-14 | Lg Chem, Ltd. | Method of setting initial value of soc of battery using ocv temperature hysteresis |
| KR100784086B1 (en) * | 2005-05-27 | 2007-12-10 | 주식회사 엘지화학 | Method and apparatus for estimating maximum power of battery by using internal resistance of the battery |
| US7348761B2 (en) | 2004-03-30 | 2008-03-25 | Seiko Epson Corporation | Information terminal and battery remaining capacity calculating method |
| JP2008154302A (en) * | 2006-12-14 | 2008-07-03 | Toyota Motor Corp | Power supply system, vehicle equipped with the same, and control method thereof |
| US7624292B2 (en) | 2004-11-17 | 2009-11-24 | Ricoh Company, Ltd. | Battery power detection device |
| JP2019024815A (en) * | 2017-07-28 | 2019-02-21 | 株式会社日立製作所 | Mobile x-ray apparatus |
-
1997
- 1997-11-29 JP JP9343936A patent/JPH11162524A/en not_active Withdrawn
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001015179A (en) * | 1999-06-30 | 2001-01-19 | Matsushita Electric Ind Co Ltd | Secondary battery residual quantity display method and portable electronic device with secondary battery residual quantity display method |
| JP2001103671A (en) * | 1999-09-30 | 2001-04-13 | Sanyo Electric Co Ltd | Battery remainder-displaying device for telephone machine |
| JP2001126773A (en) * | 1999-10-28 | 2001-05-11 | Sanyo Electric Co Ltd | Method of charging secondary battery |
| US6920404B2 (en) | 2000-09-28 | 2005-07-19 | Japan Storage Battery Co., Ltd. | Method of detecting residual capacity of secondary battery |
| KR20020090755A (en) * | 2001-05-29 | 2002-12-05 | 주식회사 이랜텍 | Method for calibration remain capacity of smart battery |
| US7348761B2 (en) | 2004-03-30 | 2008-03-25 | Seiko Epson Corporation | Information terminal and battery remaining capacity calculating method |
| US7498773B2 (en) | 2004-03-30 | 2009-03-03 | Seiko Epson Corporation | Information terminal and battery remaining capacity calculating method |
| US7624292B2 (en) | 2004-11-17 | 2009-11-24 | Ricoh Company, Ltd. | Battery power detection device |
| EP1689017A1 (en) * | 2004-12-13 | 2006-08-09 | Matsushita Electric Industrial Co., Ltd. | Battery pack |
| US8274260B2 (en) | 2004-12-13 | 2012-09-25 | Panasonic Corporation | Battery pack |
| WO2006096002A1 (en) * | 2005-03-09 | 2006-09-14 | Lg Chem, Ltd. | Method of setting initial value of soc of battery using ocv temperature hysteresis |
| KR100784086B1 (en) * | 2005-05-27 | 2007-12-10 | 주식회사 엘지화학 | Method and apparatus for estimating maximum power of battery by using internal resistance of the battery |
| JP2008154302A (en) * | 2006-12-14 | 2008-07-03 | Toyota Motor Corp | Power supply system, vehicle equipped with the same, and control method thereof |
| JP4600390B2 (en) * | 2006-12-14 | 2010-12-15 | トヨタ自動車株式会社 | Power supply system, vehicle including the same, and control method thereof |
| US8344699B2 (en) | 2006-12-14 | 2013-01-01 | Toyota Jidosha Kabushiki Kaisa | Power supply, system having a plurality of power storage units, vehicle using the same, and its control method |
| JP2019024815A (en) * | 2017-07-28 | 2019-02-21 | 株式会社日立製作所 | Mobile x-ray apparatus |
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