JPH0444955B2 - - Google Patents
Info
- Publication number
- JPH0444955B2 JPH0444955B2 JP59051681A JP5168184A JPH0444955B2 JP H0444955 B2 JPH0444955 B2 JP H0444955B2 JP 59051681 A JP59051681 A JP 59051681A JP 5168184 A JP5168184 A JP 5168184A JP H0444955 B2 JPH0444955 B2 JP H0444955B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- capacitor
- discharge
- storage battery
- discharging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- 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
- Tests Of Electric Status Of Batteries (AREA)
- Secondary Cells (AREA)
Description
【発明の詳細な説明】
本発明は蓄電池の残存容量をLED（発光ダイオ
ード）等のデジタルで表示する蓄電池監視装置
で、特に放電時、放電休止時のいずれの場合でも
蓄電池の残存容量を表示する機能を備えた蓄電池
監視装置に関するものである。[Detailed Description of the Invention] The present invention is a storage battery monitoring device that digitally displays the remaining capacity of a storage battery using LEDs (light emitting diodes), etc., and particularly displays the remaining capacity of the storage battery both during discharging and during discharging. The present invention relates to a storage battery monitoring device with functions.
蓄電池の容量を監視する場合、最も一般的なも
のは電解液比重を測定し、そして測定した電解液
比重より蓄電池容量を推定する方法で、現在でも
この方法が一番正確な方法とされている。 When monitoring the capacity of a storage battery, the most common method is to measure the specific gravity of the electrolyte and then estimate the battery capacity from the measured specific gravity of the electrolyte, and this method is still considered the most accurate method. .
従来、このため電解液比重を電気的に計測し、
電解液比重値をそのまま、あるいは電解液比重値
を容量に換算して表示する方法として、フロート
等よりなるセンサーを直接電解液に挿入し、フロ
ートの変位を電気信号に変換、増幅して電解液比
重値あるいは容量として表示する方法が考えられ
ている。しかし、この方法はフロートの変位を電
気信号に変換するのが複雑で、また気温が上昇す
ると溶存酸素が泡となつてフロートの表面に付着
し、誤差の原因となつたり、また温度換算などが
必要で、さらに振動を受ける移動用蓄電池には不
適当であるといつた問題がある。また電解液の屈
折率を応用した方法も考えられているが、この方
法でもプリズムが汚れ、光源の光量変化による誤
差が大きく、また増幅装置等が必要で、装置自体
かなり複雑となるといつた問題がある。このよう
に従来考案されているいずれの方法をとつても多
くの問題が残されている。このような理由で、上
記原理に基づく蓄電池監視装置は、現時点では極
く限られた一部にしか応用されていない。 Conventionally, for this purpose, the specific gravity of the electrolyte was measured electrically.
To display the electrolyte specific gravity value as it is or by converting the electrolyte specific gravity value into capacity, a sensor consisting of a float or the like is directly inserted into the electrolyte solution, and the displacement of the float is converted into an electrical signal and amplified. Methods of displaying it as a specific gravity value or capacity have been considered. However, with this method, converting the displacement of the float into an electrical signal is complicated, and when the temperature rises, dissolved oxygen forms bubbles and adheres to the surface of the float, causing errors and temperature conversion. The problem is that it is unsuitable for mobile storage batteries, which are necessary and subject to vibration. A method using the refractive index of the electrolyte has also been considered, but this method also has the problems of dirty prisms, large errors due to changes in the light intensity of the light source, and the need for an amplification device, making the device itself quite complex. There is. As described above, many problems remain with any of the conventionally devised methods. For these reasons, storage battery monitoring devices based on the above-mentioned principle are currently only being applied to a limited number of areas.
また上記したような欠点を補つた簡易形の放電
計は、蓄電池の放電電圧を検出し、その電圧を平
滑し、メモリーした値を蓄電池容量に換算した監
視装置が米国で広く応用されている。しかしこの
放電計は放電末期表示が急激に低下し、電気量
（Ah）に比例しない問題が残されており、また放
電中には蓄電池電圧の回復によつて電圧が上昇す
るため、長時間記憶させることが難しく、１日で
も充電なしに放置すれば、あたかも次の日充電さ
れたような表示になる問題が残されている。 In addition, a simple discharge meter that compensates for the above-mentioned drawbacks is a monitoring device that detects the discharge voltage of a storage battery, smoothes the voltage, and converts the memorized value into the storage battery capacity, which is widely used in the United States. However, this discharge meter still has the problem that the display at the end of discharge drops rapidly and is not proportional to the amount of electricity (Ah).Also, during discharge, the voltage increases as the storage battery voltage recovers, so it can be stored for a long time. The problem remains that if the battery is left without charging for even one day, the display will appear as if it was charged the next day.
本発明は上記した如き問題点を解消した蓄電池
監視装置で、即ち、開路電圧および放電電圧に比
例した電圧を得るための電圧測定回路と、
電圧測定回路に並列に接続された電圧記憶回路
であつて、
開路時には、第１の逆流防止素子を介したコン
デンサーの充電・保持により、前記電圧測定回路
で測定された開路電圧が記憶され、
放電時には、複数が直列接続された第２の逆流
防止素子による順方向ドロツプを利用した所定電
圧差でのコンデンサーの放電により、前記電圧測
定回路で測定された放電電圧が記憶さるよう構成
されたものと、
内部インピーダンスによりコンデンサーを放電
させ、その電圧をインピーダンス変換・増幅する
ための、インピーダンス変換・増幅装置と、
前記インピーダンス変換・増幅装置の出力に接
続された複数個のLED等よりなる表示器とを備
え、
開路時、放電時にかかわらず、容量表示が可能
な蓄電池監視装置を提供するものである。 The present invention is a storage battery monitoring device that solves the above-mentioned problems, namely, a voltage measurement circuit for obtaining a voltage proportional to the open circuit voltage and the discharge voltage, and a voltage storage circuit connected in parallel to the voltage measurement circuit. When the circuit is open, the open circuit voltage measured by the voltage measurement circuit is stored by charging and holding the capacitor through the first backflow prevention element, and when the capacitor is discharged, the second backflow prevention element, in which a plurality of the capacitors are connected in series, is stored. The capacitor is configured to store the discharge voltage measured by the voltage measuring circuit by discharging the capacitor at a predetermined voltage difference using a forward drop, and the capacitor is discharged by an internal impedance, and the voltage is converted into an impedance. -Equipped with an impedance conversion/amplification device for amplification and an indicator consisting of multiple LEDs, etc. connected to the output of the impedance conversion/amplification device, and can display capacity regardless of whether it is open circuit or discharged. The present invention provides a storage battery monitoring device.
即ち、本発明は、電気車用、電気自動車用等の
蓄電池のように間歇放電される蓄電池において
は、放電休止時の開路電圧（無負荷電圧）の安定
したピーク部の電圧は蓄電池の容量あるいは電解
液比重値と理論的に比例の関係を持ち、また平滑
化された放電電圧も容量と比例の関係を持ち、容
量の低下に従い両者の電圧は放電終期以外はほぼ
一定の電圧差を持つて平行して降下する特性を応
用したもので、放電時には平滑された放電電圧を
コンデンサに記憶させ、このコンデンサの電圧を
例えばLED点灯用リニヤICの内部インピーダン
スを通して放電させることによりインピーダンス
変換してコンデンサの記憶電圧に応じてつまり放
電電圧に応じて例えば複数個のLEDを点灯、消
灯して容量を表示するようにし、放電休止時には
開路電圧をコンデンサに記憶させ、前記と同様に
して開路電圧に応じて容量を表示するようにし、
前述した簡易形の放電計の有していた問題を無く
したものである。。従来の電圧検出式容量計は開
路電圧あるいは放電電圧のいずれかの特性を応用
して構成しているが、本発明は両者の特性を採用
することにより、いかなる状態でも表示部に呼吸
現象なしに正確に容量表示ができるようにしたも
のである。 That is, the present invention provides that in a storage battery that is discharged intermittently, such as a storage battery for an electric vehicle or an electric vehicle, the stable peak voltage of the open circuit voltage (no-load voltage) at the time of discharging pause is determined by the capacity of the storage battery or It has a theoretically proportional relationship with the electrolyte specific gravity value, and the smoothed discharge voltage also has a proportional relationship with the capacity, and as the capacity decreases, the voltage difference between the two is almost constant except at the end of discharge. This applies the characteristic of parallel drops, and when discharging, the smoothed discharge voltage is stored in the capacitor, and by discharging this capacitor voltage through the internal impedance of, for example, a linear IC for LED lighting, the impedance is converted and the capacitor's voltage is changed. Depending on the storage voltage, that is, depending on the discharge voltage, for example, multiple LEDs are turned on and off to display the capacity, and when discharging is stopped, the open circuit voltage is stored in the capacitor, and in the same way as above, the capacitance is displayed according to the open circuit voltage. Display the capacity,
This eliminates the problems of the above-mentioned simple discharge meter. . Conventional voltage detection type capacitance meters are constructed by applying the characteristics of either open circuit voltage or discharge voltage, but the present invention uses the characteristics of both, so that the display section can be displayed without any breathing phenomenon under any conditions. This allows for accurate capacity display.
以下、本発明蓄電池監視装置を図面を用いて具
体的に説明する。 Hereinafter, the storage battery monitoring device of the present invention will be specifically explained using the drawings.
電気車用蓄電池等の放電休止を伴う負荷サイク
ルにて蓄電池を放電させると、その概要は第１図
に示す通りとなる。第１図は電気車用蓄電池48V
タイプを放電させた一例であり、縦軸に蓄電池電
圧、横軸に容量（％）をとり、放電量に従い蓄電
池電圧がどのように降下するかを示したものであ
る。この図で理解できることは電気車が放電休止
した無負荷電圧、つまり開路電圧は容量に比例し
て正確に降下している。また放電電圧もモータ等
の突入電流を除去して平滑化すれば開路電圧とほ
ぼ一定の電圧差を持つて平行して降下する。この
ように開路電圧、放電電圧いずれを応用しても蓄
電池の容量計を構成できる訳であるが、開路電圧
を採用した場合、第１図に示すように開路電圧が
Ａ点からＢ点の間の様に長時間発生しない場合、
開路電圧を記憶するコンデンサの記憶電圧を長時
間補正できなくなり、誤表示することがある。ま
た放電電圧の検出のみで容量を表示しているもの
についても同様、放電休止時蓄電池電圧が回復す
るため、放電電圧を記憶しているコンデンサの記
憶電圧はたとえ超高抵抗を挿入しても長時間のう
ちには徐々に上昇する。また逆流防止素子でこの
回路を遮断すると、今度はコンデンサ自身の漏電
流でコンデンサの記憶電圧が徐々に低下し、放電
がなくても長時間後には放電表示をとるといつた
問題があつた。 When a storage battery for an electric car or the like is discharged in a load cycle that involves a discharging pause, the outline is as shown in FIG. 1. Figure 1 shows a 48V storage battery for electric cars.
This is an example of discharging a type of battery, with the vertical axis representing the storage battery voltage and the horizontal axis representing the capacity (%), showing how the storage battery voltage drops according to the amount of discharge. What can be understood from this diagram is that the no-load voltage when the electric car stops discharging, that is, the open circuit voltage, drops accurately in proportion to the capacity. Furthermore, if the discharge voltage is smoothed by removing the inrush current of the motor, etc., it will drop in parallel with the open circuit voltage with a substantially constant voltage difference. In this way, a storage battery capacity meter can be configured by applying either open circuit voltage or discharge voltage, but if open circuit voltage is used, the open circuit voltage will be between points A and B as shown in Figure 1. If it does not occur for a long time like
The stored voltage of the capacitor that stores the open circuit voltage may not be able to be corrected for a long time, resulting in incorrect display. Similarly, for devices that display capacity only by detecting the discharge voltage, the storage battery voltage recovers when the discharge is suspended, so the memory voltage of the capacitor that stores the discharge voltage will last for a long time even if an ultra-high resistor is inserted. It gradually rises over time. Furthermore, when this circuit is interrupted by a backflow prevention element, the storage voltage of the capacitor gradually decreases due to the leakage current of the capacitor itself, and even if there is no discharge, the capacitor will display a discharge indication after a long period of time.
第２図は本発明蓄電電池監視装置の一実施例を
示すもので、１は被監視蓄電池（以下、単に蓄電
池という）、２は負荷、３は負荷投入スイツチで
ある。４，５は抵抗、６は定電圧ダイオードで、
図中のａ−ｃ間の電圧を拡大し、後述するLED
点灯用リニヤICの入力勾配と同一勾配を持つよ
うに設定されている。また抵抗４，５、定電圧ダ
イオード６で、開路電圧および放電電圧に比例し
た電圧を得る回路が構成されている。７は図中の
ａ−ｃ間に並列に接続されたコンデンサで、該コ
ンデンサはａ−ｃ間で得られる電圧で充電され
る。８，９はシリコンダイオード等の逆流防止素
子で、逆流防止素子９は複数個の逆流防止素子を
順方向に接続したものよりなる。また逆流防止素
子８と９は逆並列接続された状態になつており、
この逆並列接続された逆流防止素子を介してコン
デンサ７は前記のように接続されている。１０は
蓄電池１の端子に負荷２における回生制動あるい
はチヨツパ制御等で、無負荷電圧より高いパルス
電圧が発生した場合のそのパルス電圧を吸収する
コンデンサである。１１はコンデンサ７の電圧を
インピーダンス変換および増幅するためのLED
点灯用リニヤIC（以下、単にICという）で、この
ICの入力ピンはコンデンサ７に並列に接続され
ている。１２〜１６はIC１１の出力に接続され
た複数個のLEDで、該複数個のLEDで表示器を
構成している。前記IC８の入力インピーダンス
は非常に高く、前記コンデンサ７に充電された電
荷をほとんど放電さすことなく、その電圧に比例
した電圧でLED１２〜１６を点灯、消灯させる。
このLEDの点灯個数によつて蓄電池１の放電状
態を表示する。また１７〜２３は抵抗、２４は
IC１１の電源確立用の定電圧ダイオードである。 FIG. 2 shows an embodiment of the storage battery monitoring device of the present invention, in which 1 is a storage battery to be monitored (hereinafter simply referred to as a storage battery), 2 is a load, and 3 is a load input switch. 4 and 5 are resistors, 6 is a constant voltage diode,
The voltage between a and c in the figure is enlarged, and the LED
It is set to have the same slope as the input slope of the lighting linear IC. Further, the resistors 4 and 5 and the constant voltage diode 6 constitute a circuit that obtains a voltage proportional to the open circuit voltage and the discharge voltage. 7 is a capacitor connected in parallel between a and c in the figure, and the capacitor is charged with the voltage obtained between a and c. 8 and 9 are backflow prevention elements such as silicon diodes, and backflow prevention element 9 is made up of a plurality of backflow prevention elements connected in the forward direction. Further, the backflow prevention elements 8 and 9 are connected in antiparallel,
The capacitor 7 is connected as described above via this backflow prevention element connected in antiparallel. 10 is a capacitor that absorbs a pulse voltage higher than the no-load voltage when a pulse voltage higher than the no-load voltage is generated at the terminal of the storage battery 1 due to regenerative braking or chopper control in the load 2. 11 is an LED for impedance conversion and amplification of the voltage of capacitor 7
This is a linear IC for lighting (hereinafter simply referred to as IC).
The input pin of the IC is connected in parallel to capacitor 7. 12 to 16 are a plurality of LEDs connected to the output of the IC 11, and the plurality of LEDs constitute a display device. The input impedance of the IC 8 is very high, and the LEDs 12 to 16 are turned on and off with a voltage proportional to the voltage without discharging the charge stored in the capacitor 7.
The discharge state of the storage battery 1 is indicated by the number of lit LEDs. Also, 17-23 are resistors, 24 is
This is a constant voltage diode for establishing the power supply of IC11.
今仮りに蓄電池１を０〜100％まで放電させた
時、48V系電気車用蓄電池では開路電圧が51V→
46V、放電電圧が47V→42Vとなり、IC１１の入
力勾配が1.0V→0Vと変化するとすれば、抵抗４
の抵抗値をr1、抵抗５の抵抗値r2、定電圧ダイオ
ード６の両端電圧をV1、逆流防止素子８の両端
電圧をV2、逆流防止素子９の両端電圧をV3とす
ると、ａ−ｃ間の電圧（ICの入力電圧）は、０
％放電時については51×r2／r1＋r2−（V1＋V2）＝１
…(1)、100％放電時については46×r2／r1＋r2−（V1
＋V2）＝０…(2)となる。この２式よりr1、r2を求
めると、r1：r2＝４：１となる比の抵抗値をとれ
ば、ａ−ｃ間の電圧はIC１１の入力勾配と一致
する。つまり開路電圧が51Vの時はａ−ｃ間のIC
１１入力電圧は1Vで、46Vの時は0Vとなる。こ
の時のコンデンサ７に流れる電流は逆流防止素子
８を通つて流れ、この電流でコンデンサ７は充電
され、コンデンサ７は開路電圧を記憶する。コン
デンサ７が完全に充電された状態ではａ点とIC
１１の入力ｄ点は等電位になる。したがつて放電
休止時には開路電圧がコンデンサ７に記憶され、
開路電圧に応じてLED１２〜１６が点灯、消灯
して容量を表示する。 Now, when storage battery 1 is discharged from 0 to 100%, the open circuit voltage of the 48V electric car storage battery is 51V→
46V, the discharge voltage changes from 47V to 42V, and the input slope of IC11 changes from 1.0V to 0V, then resistor 4
Assuming that the resistance value of is r 1 , the resistance value of resistor 5 is r 2 , the voltage across voltage regulator diode 6 is V 1 , the voltage across backflow prevention element 8 is V 2 , and the voltage across backflow prevention element 9 is V 3 , The voltage between a and c (IC input voltage) is 0
For % discharge, 51 x r 2 / r 1 + r 2 - (V 1 + V 2 ) = 1...(1), for 100 % discharge, 46 x r 2 / r 1 + r 2 - (V 1 + V 2 ) =0...(2). When r 1 and r 2 are determined from these two equations, if a resistance value with a ratio of r 1 :r 2 =4:1 is taken, the voltage between a and c matches the input slope of the IC 11. In other words, when the open circuit voltage is 51V, the IC between a and c
11 The input voltage is 1V, and when it is 46V, it becomes 0V. The current flowing through the capacitor 7 at this time flows through the reverse current prevention element 8, the capacitor 7 is charged with this current, and the capacitor 7 stores the open circuit voltage. When capacitor 7 is fully charged, point a and IC
The input point d of No. 11 becomes equal potential. Therefore, when the discharge is stopped, the open circuit voltage is stored in the capacitor 7,
The LEDs 12 to 16 turn on and off depending on the open circuit voltage to display the capacity.
次に放電により蓄電池電圧が47Vになつた時、
第１図に示す通りこの放電電圧は０％の放電状態
であるため、この電圧降下によつて表示部の
LEDの点灯数が減少し、容量減を表示してはな
らない。このため放電によつてａ点の電圧が降下
しても一定の電圧降下までならコンデンサ７が放
電しないように逆流防止素子９でV3（一定）の電
圧降下が生じるようにしている。これによりコン
デンサ７が放電する時は開路電圧より一定電圧、
この場合では4V以上開路電圧より放電電圧が降
下しないと、コンデンサ７は放電しない。開路時
と放電時とにこの4Vのヒステリシスを持つた回
路構成をすることにより、第１図に示す開路電圧
Ｘと平滑放電電圧Ｙの間を上下しながら蓄電池電
圧が降下しても表示部に現われるLEDの点灯数
は増減することない。さらに放電が進んで蓄電池
電圧がコンデンサ７に記憶された電圧（開路電
圧）より一定電圧以上降下すると、コンデンサ７
は放電電圧に応じて放電、コンデンサ７には放電
電圧が記憶された状態となり、このコンデンサ７
の電圧に応じてLED１２〜１６が点灯、消灯し
て容量を表示する。 Next, when the storage battery voltage reaches 47V due to discharge,
As shown in Figure 1, this discharge voltage is in a 0% discharge state, so this voltage drop causes the display section to
The number of LEDs lit should not decrease to indicate capacity reduction. For this reason, even if the voltage at point a drops due to discharge, a voltage drop of V 3 (constant) is generated in the backflow prevention element 9 so that the capacitor 7 will not discharge until the voltage drop reaches a certain level. As a result, when the capacitor 7 discharges, a constant voltage is maintained below the open circuit voltage.
In this case, the capacitor 7 will not discharge unless the discharge voltage drops below the open circuit voltage by 4V or more. By configuring the circuit to have this 4V hysteresis during open circuit and discharge, even if the battery voltage drops while fluctuating between the open circuit voltage The number of lit LEDs that appear will not increase or decrease. When the discharge further progresses and the storage battery voltage drops by more than a certain voltage (open circuit voltage) stored in the capacitor 7, the capacitor 7
is discharged according to the discharge voltage, the discharge voltage is stored in the capacitor 7, and this capacitor 7
The LEDs 12 to 16 turn on and off depending on the voltage to display the capacity.
このようにLED１２〜１６の点灯個数は放電
時については平滑された放電電圧によつて制限さ
れ、放電休止時は開路電圧によつて制限されるた
め、長時間無休止放電でも、長期間放置が発生し
ても常に正確な容量表示を行なうことができる。 In this way, the number of LEDs 12 to 16 lit is limited by the smoothed discharge voltage when discharging, and by the open circuit voltage when discharging is paused. Even if this occurs, accurate capacity display can be performed at all times.
なお、前記本発明実施例においては、コンデン
サに記憶された電圧をインピーダンス変換および
増幅する装置としてLED点灯用リニヤICを用い
たものについて示したが、LED点灯用リニヤIC
の代りにオペアンプ等を用いても本発明は構成で
きるものであり、また前記本発明実施例における
複数個のLEDによる表示も他の表示手段に置換
えることができ、要するに本発明はその要旨を逸
脱しない範囲で種々の構成で実施できるものであ
る。 In addition, in the above embodiment of the present invention, a linear IC for LED lighting is used as a device for impedance conversion and amplification of the voltage stored in a capacitor, but a linear IC for LED lighting is used.
The present invention can be constructed even if an operational amplifier or the like is used instead of the above, and the display using a plurality of LEDs in the embodiment of the present invention can also be replaced with other display means. It can be implemented in various configurations without departing from the scope.
以上述べた如く本発明蓄電池監視装置は、放電
時には平滑された放電電圧により、放電休止時に
は開路電圧により容量を表示するようにしている
ため、長時間無休止放電でも、長期間放置が発生
しても常に蓄電池容量を正確に監視することがで
きるといつたすぐれた利点を有するものである。 As described above, the storage battery monitoring device of the present invention displays the capacity using the smoothed discharge voltage during discharging and using the open circuit voltage during discharging, so even if the battery is discharged for a long period of time without pauses, it will not be left unused for a long period of time. It also has the excellent advantage of being able to accurately monitor the storage battery capacity at all times.
第１図は電気車用蓄電池等の放電休止を伴う負
荷サイクルで蓄電池を放電させたときの蓄電池電
圧と容量の関係の一例を示す図、第２図は本発明
蓄電池監視装置の一実施例を示す回路図である。
１……被監視蓄電池、２……負荷、４，５……
抵抗、６……定電圧ダイオード、７……コンデン
サ、８，９……逆流防止素子、１１……LED点
灯用リニヤIC、１２〜１６……LED。
Fig. 1 is a diagram showing an example of the relationship between the storage battery voltage and capacity when the storage battery is discharged during a load cycle with a discharging pause, such as for an electric vehicle storage battery, and Fig. 2 shows an example of the storage battery monitoring device of the present invention. FIG. 1... Monitored storage battery, 2... Load, 4, 5...
Resistor, 6... Constant voltage diode, 7... Capacitor, 8, 9... Backflow prevention element, 11... Linear IC for LED lighting, 12-16... LED.
Claims (1)
るための電圧測定回路４，５，６，１０と、 電圧測定回路に並列に接続された電圧記憶回路
７，８，９，１７であつて、 開路時には、第１の逆流防止素子８を介したコ
ンデンサー７の充電・保持により、前記電圧測定
回路で測定された開路電圧が記憶され、 放電時には、複数が直列接続された第２の逆流
防止素子９による順方向ドロツプを利用した所定
電圧差でのコンデンサー７の放電により、前記電
圧測定回路で測定された放電電圧が記憶されるよ
うに構成されたものと、 内部インピーダンスによりコンデンサー７を放
電させ、その電圧をインピーダンス変換・増幅す
るための、インピーダンス変換・増幅装置１１
と、 前記インピーダンス変換・増幅装置の出力に接
続された複数個のLED等よりなる表示器１２〜
１６とを備え、 開路時、放電時にかかわらず、容量表示が可能
な蓄電池監視装置。[Claims] 1. Voltage measuring circuits 4, 5, 6, 10 for obtaining voltages proportional to the open circuit voltage and the discharge voltage, and voltage storage circuits 7, 8, 9, connected in parallel to the voltage measuring circuit. 17, when the circuit is open, the open circuit voltage measured by the voltage measuring circuit is stored by charging and holding the capacitor 7 via the first backflow prevention element 8, and when discharging, the capacitor 7 is connected in series. The capacitor 7 is configured so that the discharge voltage measured by the voltage measuring circuit is stored by discharging the capacitor 7 at a predetermined voltage difference using the forward drop caused by the reverse current prevention element 9 of No. 2; Impedance conversion/amplification device 11 for discharging 7 and impedance conversion/amplifying the voltage.
and an indicator 12 consisting of a plurality of LEDs etc. connected to the output of the impedance conversion/amplification device.
16, and is capable of displaying the capacity regardless of whether the circuit is open or discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59051681A JPS60195468A (en) | 1984-03-16 | 1984-03-16 | Battery monitor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59051681A JPS60195468A (en) | 1984-03-16 | 1984-03-16 | Battery monitor device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60195468A JPS60195468A (en) | 1985-10-03 |
| JPH0444955B2 true JPH0444955B2 (en) | 1992-07-23 |
Family
ID=12893623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59051681A Granted JPS60195468A (en) | 1984-03-16 | 1984-03-16 | Battery monitor device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60195468A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH065312A (en) * | 1992-06-23 | 1994-01-14 | Japan Storage Battery Co Ltd | Battery monitoring device |
| CN105785276B (en) * | 2016-03-10 | 2018-11-02 | 杭州电子科技大学 | A kind of power supply supervisory circuit of low-power consumption |
-
1984
- 1984-03-16 JP JP59051681A patent/JPS60195468A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60195468A (en) | 1985-10-03 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |