JPS596451Y2 - Battery capacity detection device - Google Patents
Battery capacity detection deviceInfo
- Publication number
- JPS596451Y2 JPS596451Y2 JP17343076U JP17343076U JPS596451Y2 JP S596451 Y2 JPS596451 Y2 JP S596451Y2 JP 17343076 U JP17343076 U JP 17343076U JP 17343076 U JP17343076 U JP 17343076U JP S596451 Y2 JPS596451 Y2 JP S596451Y2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- voltage
- energized
- detection device
- circuit
- 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
Links
Classifications
-
- Y02E60/12—
Landscapes
- Secondary Cells (AREA)
Description
【考案の詳細な説明】 本考案は電池の容量検出装置に関する。[Detailed explanation of the idea] The present invention relates to a battery capacity detection device.
乾電池は残存電気量即ち容量に応じてその端子電圧が異
なるので直接端子電圧を検出することにより容量を検出
することができる。Since the terminal voltage of a dry battery varies depending on the amount of remaining electricity, that is, the capacity, the capacity can be detected by directly detecting the terminal voltage.
ところがニッケルカドミウム電池の如き2次電池は通電
しないときには容量の多少にかかわらずほぼ同じ端子電
圧を有するので直接端子電圧を検出するのみでは正確な
容量を検出できない。However, when a secondary battery such as a nickel-cadmium battery is not energized, it has approximately the same terminal voltage regardless of its capacity, so it is not possible to accurately detect the capacity by directly detecting the terminal voltage.
本考案はかかる点に鑑み考案されたものにして2次電池
に通電して該電池を活性状態になし、またその通電を交
流電源の正半波とし、負半波時即ち非通電時の電池電圧
を検出することにより電池とその接続端子の間の接触抵
抗による検出電圧の誤差をなくそうとするものである。The present invention has been devised in view of the above points, and the secondary battery is energized to activate the battery, and the energization is the positive half wave of the AC power supply, and the battery is activated during the negative half wave, that is, when the battery is not energized. By detecting the voltage, it is intended to eliminate errors in the detected voltage due to contact resistance between the battery and its connection terminals.
以下本考案の一実施例を図面に基いて説明する。An embodiment of the present invention will be described below with reference to the drawings.
第1図において、1は電源トランスにしてその1次コイ
ル2はスイッチ3を介して商用電源に接続され、その2
次コイル4は両端端子5,6と中間端子7を有し、端子
5,7間には、限流抵抗8及びダイオード9,10を介
して2組の被検電池11.12の接続端子13,13,
14.14が接続され、13.13間には抵抗15.1
6よりなる分圧回路17が、14.14間にはさらに抵
抗18を含めた分圧回路が接続される。In Figure 1, 1 is a power transformer whose primary coil 2 is connected to a commercial power source via a switch 3;
The secondary coil 4 has terminals 5 and 6 at both ends and an intermediate terminal 7, and between the terminals 5 and 7, a connection terminal 13 of two sets of test batteries 11 and 12 is connected via a current limiting resistor 8 and diodes 9 and 10. ,13,
14.14 is connected, and a resistor 15.1 is connected between 13.13.
A voltage dividing circuit 17 including a resistor 18 is connected between 14 and 14.
端子13.13にはたとえば単II電池11が、又端子
14.14には単III電池12が選択的に挿入接続さ
れ、2種の電池に同じ通電電流を流すため、単III電
池11の方が検出電圧が高くなり、抵抗18にて補正す
る。For example, a AAA battery 11 is selectively inserted into the terminal 13.13, and a AAA battery 12 is selectively inserted into the terminal 14.14, so that the same current flows through the two types of batteries. However, the detected voltage becomes high and is corrected by the resistor 18.
また2次コイル4の端子5,7間には、さらにダイオー
ド19及びコンデンサ20の直列回路が接続され、該コ
ンデンサの両端にはシリコン制御整流器(以下SCRと
云う)21を介して表示灯22が接続される。Further, a series circuit of a diode 19 and a capacitor 20 is connected between the terminals 5 and 7 of the secondary coil 4, and an indicator light 22 is connected to both ends of the capacitor via a silicon controlled rectifier (hereinafter referred to as SCR) 21. Connected.
次に23は検出回路にして2次コイル4の端子6,7間
にダイオード24を介して接続され、該検出回路は抵抗
15.16の中間分圧点25にベースを接続した第1ト
ランジスタ26と、該トランジスタと反転作動する第2
トランジスタ27とより構戊され、第2トランジスタの
コレクタはSCR 21のゲートに接続される。Next, 23 is a detection circuit connected between terminals 6 and 7 of the secondary coil 4 via a diode 24, and the detection circuit consists of a first transistor 26 whose base is connected to an intermediate voltage dividing point 25 of a resistor 15.16. and a second transistor which operates inversely to the transistor.
The collector of the second transistor is connected to the gate of the SCR 21.
以上の構成において、接続端子13.13に被検電池1
1を挿入接続しスイッチ3をたとえば数秒閉或すると、
該電池には交流電源の正半波の大きな通電電流たとえば
1Aが流れ、電池11が活性化され、電池電圧が分圧回
路17にて検出される。In the above configuration, the test battery 1 is connected to the connection terminal 13.13.
1 is inserted and connected, and switch 3 is closed for a few seconds, for example,
A large current of 1 A, for example, a positive half wave of the AC power supply, flows through the battery, activating the battery 11, and detecting the battery voltage in the voltage dividing circuit 17.
第2図は通電電流の通電時間に対する容量の異なる電池
の電圧特性図で容量は%で表示している。FIG. 2 is a voltage characteristic diagram of batteries with different capacities as a function of the current flow time, and the capacity is expressed in %.
而して検出回路23は、交流電圧の負半波時即ち電池1
1の非通電時に作動するので、分圧回路17には前記通
電電流による接続端子13と電池11との間の接触電位
差とは無関係に電池電圧が表われ、たとえば電池11が
70%の容量があれば、その対応電圧Vが分圧点25に
表われて第1トランジスタ26が導通する。Therefore, the detection circuit 23 detects the negative half wave of the AC voltage, that is, when the battery 1
Since the voltage dividing circuit 17 operates when the battery 11 is not energized, the battery voltage appears in the voltage dividing circuit 17 regardless of the contact potential difference between the connecting terminal 13 and the battery 11 due to the energizing current. If so, the corresponding voltage V appears at the voltage dividing point 25 and the first transistor 26 becomes conductive.
従って第2トランジスタ27は遮断し、そのコレクタ電
圧が上昇するため、SCR 21が点弧し、コンデンサ
20の平滑電圧にて該SCRが導通して表示灯22が点
灯する。Therefore, the second transistor 27 is cut off and its collector voltage rises, so that the SCR 21 is turned on, and the smoothed voltage of the capacitor 20 makes the SCR conductive, causing the indicator lamp 22 to light up.
一方被検電池11の容量が少ないときには分圧回路17
の分圧点25の電圧が低く第1トランジスタ26が遮断
、第2トランジスタ27が導通し、SCR 21のゲー
ト信号が小さく点弧導通しない。On the other hand, when the capacity of the test battery 11 is small, the voltage dividing circuit 17
Since the voltage at the voltage dividing point 25 is low, the first transistor 26 is cut off, the second transistor 27 is turned on, and the gate signal of the SCR 21 is small and does not turn on.
以上の如く本考案によれば、被検電池に交流電圧の正半
波電流を通電して該電池を活性化して容量に応じた電池
電圧を表出せしめ、且交流電圧の負半波時即ち被検電池
の非通電時に電池電圧を検出して被検電池が所定容量以
上であるとき、コンデンサの平滑電圧にて表示灯を点灯
するようにしたから、被検電池の接続端子の前記通電電
流による接触電位差の影響を受けることなく容量を検出
することができ、又表示灯は被検電池の電圧ではなくコ
ンテ゛ンサの平滑電圧にて点灯するので電池の無用な放
電を少なくすることができる等実用的効果大なるもので
ある。As described above, according to the present invention, a positive half-wave current of an AC voltage is applied to the battery to be tested to activate the battery and express a battery voltage according to the capacity, and at the negative half-wave of the AC voltage, i.e. When the battery voltage is detected when the battery under test is not energized and the battery under test has a predetermined capacity or more, the indicator light is turned on by the smoothed voltage of the capacitor, so that the energizing current at the connection terminal of the battery under test is The capacitance can be detected without being affected by the contact potential difference caused by the voltage, and since the indicator light is lit based on the smoothed voltage of the capacitor rather than the voltage of the battery being tested, unnecessary discharge of the battery can be reduced. This has a great effect.
第1図は本考案の一実施例を示す電気回路図、第2図は
容量の異なる電池の通電電流の通電時間による電圧特性
図である。
1・・・・・・電源トランス、11,12・・・・・・
被検電池、13,13,14.14・・・・・・接続端
子、19・・・・・・ダイオード、20・・・・・・コ
ンデンサ、21・・・・・・SCR、22・・・・・・
表示灯、23・・・・・・検出回路。FIG. 1 is an electric circuit diagram showing an embodiment of the present invention, and FIG. 2 is a voltage characteristic diagram of the current flowing through batteries of different capacities depending on the current flowing time. 1...Power transformer, 11, 12...
Test battery, 13, 13, 14.14... Connection terminal, 19... Diode, 20... Capacitor, 21... SCR, 22...・・・・・・
Indicator light, 23...Detection circuit.
Claims (1)
接続端子とダイオード及びコンデンサの直列回路とを並
列に接続し、前記コンデンサの両端間にシリコン制御整
流器を介して表示灯を設けると共に前記接続端子間に、
前記トランスの2次側負半波で付勢されて被検電池の検
出回路を一方のベースに他方のコレクタを接続された一
対のトランジスタで構威して設け、該回路の出力により
前記整流器を点弧して表示灯を点灯せしめてなる電池の
容量検出装置。Connect the connecting terminal of the battery under test, which is energized in a positive half wave, to the secondary side of the power transformer in parallel with a series circuit of a diode and a capacitor, and provide an indicator light between both ends of the capacitor via a silicon-controlled rectifier. and between the connection terminals,
A detection circuit for the battery under test is energized by the negative half-wave of the secondary side of the transformer and is composed of a pair of transistors, one of which is connected to the base and the other collector, and the output of the circuit is used to control the rectifier. A battery capacity detection device that ignites and lights up an indicator light.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17343076U JPS596451Y2 (en) | 1976-12-20 | 1976-12-20 | Battery capacity detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17343076U JPS596451Y2 (en) | 1976-12-20 | 1976-12-20 | Battery capacity detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5387831U JPS5387831U (en) | 1978-07-19 |
JPS596451Y2 true JPS596451Y2 (en) | 1984-02-28 |
Family
ID=28780924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17343076U Expired JPS596451Y2 (en) | 1976-12-20 | 1976-12-20 | Battery capacity detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS596451Y2 (en) |
-
1976
- 1976-12-20 JP JP17343076U patent/JPS596451Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5387831U (en) | 1978-07-19 |
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