JP2890702B2 - Method for determining memory effect of storage battery and memory effect warning device - Google Patents
Method for determining memory effect of storage battery and memory effect warning deviceInfo
- Publication number
- JP2890702B2 JP2890702B2 JP2164899A JP16489990A JP2890702B2 JP 2890702 B2 JP2890702 B2 JP 2890702B2 JP 2164899 A JP2164899 A JP 2164899A JP 16489990 A JP16489990 A JP 16489990A JP 2890702 B2 JP2890702 B2 JP 2890702B2
- Authority
- JP
- Japan
- Prior art keywords
- memory effect
- charging
- storage battery
- voltage
- time
- 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
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- Tests Of Electric Status Of Batteries (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は、蓄電池の、見掛け上の容量低下を引き起
こすメモリ効果の発生を検出するメモリ効果判別方法並
びにメモリ効果の発生を警告するメモリ効果警告装置に
関するものである。The present invention relates to a memory effect discriminating method for detecting the occurrence of a memory effect causing an apparent reduction in capacity of a storage battery, and a memory effect warning for warning the occurrence of a memory effect. It concerns the device.
［従来の技術］ ニツケルカドミウム蓄電池は、浅い放電と充電とを繰
返した後に、放電深度が大きい放電を行うと、所謂メモ
リ効果と呼ばれる現象が発生する。メモリ効果とは、第
３図に於て鎖線で示すように放電電圧の低下が二段階と
なる現象をいい、放電終止電圧を高く設定した機器に使
用する場合は、電圧低下に伴って見掛け上の容量が低下
することになる。[Prior Art] When a nickel cadmium storage battery performs discharge with a large depth of discharge after repeating shallow discharge and charge, a phenomenon called a so-called memory effect occurs. The memory effect refers to a phenomenon in which the discharge voltage drops in two steps as shown by the dashed line in FIG. 3. When used in equipment with a high discharge end voltage, it appears as the voltage drops. Will be reduced.
このメモリ効果は、前記蓄電池を１〜２回完全放電さ
せることによつて解消することができ、第３図中実線で
示すように正常な放電特性に復帰する。This memory effect can be eliminated by completely discharging the storage battery once or twice, and returns to normal discharge characteristics as shown by the solid line in FIG.
［発明が解決しようとする課題］ 従来、メモリ効果の発生を判別する方法は無く、メモ
リ効果による見掛け上の容量低下を蓄電池の寿命による
ものと誤認することがあつた。[Problems to be Solved by the Invention] Conventionally, there is no method for determining the occurrence of the memory effect, and an apparent decrease in capacity due to the memory effect is sometimes mistakenly attributed to the life of the storage battery.
そこで、ニツケルカドミウム蓄電池にメモリ効果が発
生した場合は、充電時にメモリ効果を検出し、使用者に
警告を与えて完全放電によるメモリ効果の消去を促し、
蓄電池の機能低下を解消するために解決すべき技術的課
題が生じてくるのであり、本発明は該課題を解決するこ
とを目的とする。Therefore, when a memory effect occurs in the nickel cadmium storage battery, the memory effect is detected at the time of charging, and a warning is issued to the user to urge the erasure of the memory effect by complete discharge,
A technical problem to be solved arises in order to solve the deterioration of the function of the storage battery, and an object of the present invention is to solve the problem.
［課題を解決するための手段］ この発明は、上記目的を達成するために提案せられた
ものであり、蓄電池を放電回路に接続して一定時間放電
し、前記蓄電池の電圧を計測して記憶し、次に充電開始
から充電完了までの充電時間の計測を行い、該充電時間
が規定時間以内であり、更に記憶した計測電圧が所定電
圧以下のときは、メモリ効果によるものと判定する蓄電
池のメモリ効果判別方法及び充電完了を検出して充電を
停止する満充電検出回路を設けた充電器に於て、上記メ
モリ効果判別方法のプログラムを入力した制御部と、充
電開始から充電完了までの時間を計測するタイマー手段
と、警報装置とを設け、規定時間以下で充電を完了した
ときは、前記警報装置を作動させて前記蓄電池のメモリ
効果発生を警告するように制御部を構成したことを特徴
とするメモリ効果警告装置を提供せんとするものであ
る。Means for Solving the Problems The present invention has been proposed to achieve the above object, and connects a storage battery to a discharge circuit and discharges the battery for a certain period of time, and measures and stores the voltage of the storage battery. Then, the charging time from the start of charging to the completion of charging is measured, and when the charging time is within the specified time and the stored measured voltage is equal to or lower than the predetermined voltage, the storage battery is determined to be due to the memory effect. In a battery charger provided with a memory effect determination method and a full charge detection circuit for detecting completion of charging and stopping charging, a control unit to which a program of the memory effect determination method is input, and a time period from the start of charging to the completion of charging. A timer means for measuring the time and a warning device, and when charging is completed within a specified time or less, the control unit is configured to activate the warning device to warn of the occurrence of a memory effect of the storage battery. A memory effect warning device characterized by the above feature is provided.
［作用］ 請求項（１）記載の発明は、蓄電池を放電させて放電
電圧を計測する。次に充電時間の計測を行いこの充電時
間によつて前記蓄電池の残存容量の有無が判定される
が、この充電時間が規定時間より長い場合は、蓄電池の
残存容量はほぼ空であつたと判定できる。一方、充電時
間が規定時間より短く、前記計測した放電電圧が所定電
圧以下のときは、当該蓄電池にメモリ効果が発生してい
ると判断できる。[Operation] The invention described in claim (1) measures the discharge voltage by discharging the storage battery. Next, the charging time is measured, and the presence or absence of the remaining capacity of the storage battery is determined based on the charging time. If the charging time is longer than the specified time, it can be determined that the remaining capacity of the storage battery is almost empty. . On the other hand, when the charging time is shorter than the specified time and the measured discharge voltage is equal to or lower than the predetermined voltage, it can be determined that the storage battery has a memory effect.
請求項（２）記載の充電器は、上記手順によりメモリ
効果を検出し、メモリ効果が検出された場合は、警報装
置を作動させて蓄電池のメモリ効果発生を警告すること
ができる。The battery charger according to claim 2 detects the memory effect by the above procedure, and when the memory effect is detected, can activate an alarm device to warn of the occurrence of the memory effect of the storage battery.
［実施例］ 以下、この発明の一実施例を別紙添付図面に従って詳
述する。第１図は公称電圧1.2Vのニツケルカドミウム蓄
電池用充電器（１）の回路ブロツク図である。前記充電
器（１）は、交流電源（２）をラインフイルタ（３）通
過後に、整流回路（４）で直流に整流し、スイツチング
素子（５）にてパルス電流とする。このパルス電流はト
ランス（６）によつて所定の変圧比で変圧され、整流回
路（７）を経て出力端子（８）（９）へ接続した蓄電池
（図示せず。）を充電する。（10）は満充電検出回路で
あるとともに、メモリ効果を警告するメモリ効果警告装
置である。前記メモリ効果警告装置（10）は、整流回路
（７）の後段に設けた放電回路（11）と、前記蓄電池の
電圧をA/D変換するA/Dコンバータ（12）と制御部（13）
と警報装置（14）から構成している。前記制御部（13）
は、スイツチング素子（５）を制御して出力端子（８）
（９）に接続した蓄電池（図示せず。）へ充電するとと
もに、A/Dコンバータ（12）を介して前記蓄電池の電圧
を監視する。そして、電池電圧がピーク値に達した後の
降下電圧（−ΔＶ）を検出した時点で満充電と判断し、
充電電流を微小電流へ低減させてトリクル充電に移行
し、過充電を防止するように構成している。Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a circuit block diagram of a nickel cadmium battery charger (1) having a nominal voltage of 1.2 V. After passing through the line filter (3), the charger (1) rectifies the DC power by the rectifier circuit (4) after passing through the line filter (3), and makes the switching element (5) a pulse current. This pulse current is transformed by a transformer (6) at a predetermined transformation ratio, and charges a storage battery (not shown) connected to output terminals (8) and (9) via a rectifier circuit (7). (10) is a full charge detection circuit and a memory effect warning device for warning a memory effect. The memory effect warning device (10) includes a discharge circuit (11) provided after the rectifier circuit (7), an A / D converter (12) for A / D converting the voltage of the storage battery, and a control unit (13).
And an alarm device (14). The control unit (13)
Controls the switching element (5) to control the output terminal (8)
While charging a storage battery (not shown) connected to (9), the voltage of the storage battery is monitored via an A / D converter (12). Then, when the voltage drop (−ΔV) after the battery voltage reaches the peak value is detected, it is determined that the battery is fully charged,
The charging current is reduced to a very small current, and a transition is made to trickle charging to prevent overcharging.
又、前記制御部（13）は蓄電池の電圧記憶手段並びに
タイマー手段を設けてあり、後述する手順によつてメモ
リ効果を検出した場合は、ランプ或いはブザー等の警報
装置（14）を作動させる。Further, the control section (13) is provided with a voltage storage means and a timer means for the storage battery, and activates an alarm device (14) such as a lamp or a buzzer when a memory effect is detected by a procedure described later.
前記放電回路（11）は、出力端子（８）（９）間に抵
抗器（15）とトランジスタ（16）とを接続し、前記制御
部（13）によつてトランジスタ（16）をオンとし、蓄電
池の電流をグラウンド（17）ヘ放電させる。尚、本実施
例に於ては前記抵抗器（15）の抵抗値を2.7Ωに設定し
ている。The discharge circuit (11) connects a resistor (15) and a transistor (16) between output terminals (8) and (9), and turns on the transistor (16) by the control unit (13); Discharge the battery current to ground (17). In this embodiment, the resistance of the resistor (15) is set to 2.7Ω.
続いて、メモリ効果警告装置（10）の動作を第２図の
フローチヤートを参照して説明する。先ず、出力端子
（８）（９）にニツケルカドミウム蓄電池を接続する
と、前記制御部（13）が接続を検出し、（ステツプ10
1）放電回路（11）のトランジスタ（16）をオンする
（ステツプ102）。すると、蓄電池の電流は抵抗器（1
4）を通じてグラウンド（17）へ放電される。そして、1
0秒経過後（ステツプ103）に制御部（13）は、A/Dコン
バータ（12）によつてデジタル変換された蓄電池の電圧
の測定を行い、この電圧を記憶し（ステツプ104）、放
電回路（11）をオフとする（ステツプ105）。続いて、
制御部（13）がスイツチング素子（５）を作動させて、
出力端子（８）に１時間充電の設定電流を通じ、充電を
開始するとともに、タイマー手段によつて充電時間のカ
ウントを開始する（ステツプ106）。続いて、制御部（1
3）がA/Dコンバータ（12）を介して出力端子（８）
（９）間の電圧を逐次監視する（ステツプ107）。そし
て、ピーク電圧に達した後の降下電圧（−ΔＶ）を検出
した時点で満充電と判断し、充電並びに時間計測を停止
する（ステツプ108）。この計測された充電時間が50分
以上の場合は、ステツプ109に於いて正常に充電された
ものと判断され、処理を終了する（ステツプ112）。Next, the operation of the memory effect warning device (10) will be described with reference to the flowchart of FIG. First, when a nickel cadmium storage battery is connected to the output terminals (8) and (9), the control unit (13) detects the connection and (step 10).
1) Turn on the transistor (16) of the discharge circuit (11) (Step 102). Then, the current of the storage battery is
Discharged to ground (17) through 4). And one
After a lapse of 0 seconds (step 103), the control unit (13) measures the voltage of the storage battery that has been digitally converted by the A / D converter (12), stores this voltage (step 104), and discharges the battery. (11) is turned off (step 105). continue,
The control unit (13) operates the switching element (5),
The charging is started by passing the set current for charging for one hour through the output terminal (8), and the counting of the charging time is started by the timer means (step 106). Then, the control unit (1
3) Output terminal (8) via A / D converter (12)
The voltage during (9) is monitored sequentially (step 107). When the voltage drop (-.DELTA.V) after reaching the peak voltage is detected, it is determined that the battery is fully charged, and the charging and time measurement are stopped (step 108). If the measured charging time is 50 minutes or more, it is determined in step 109 that the battery has been charged normally, and the process ends (step 112).
一方、充電時間が50分未満のときは、ステツプ110に
至る。ここで、ステツプ104に於ける記憶電圧が1.1V以
上の場合は、蓄電池に容量が残存していたことであり、
残存容量の影響で満充電に達する時間が50分未満に短縮
されたと判断して処理を終了（ステツプ112）する。On the other hand, if the charging time is less than 50 minutes, the process proceeds to step 110. Here, if the storage voltage in step 104 is 1.1 V or more, it means that the storage battery has capacity remaining,
It is determined that the time to reach full charge has been reduced to less than 50 minutes due to the effect of the remaining capacity, and the process ends (step 112).
又、満充電に要する時間が50分未満であつて、充電開
始前の電圧が1.1V未満の場合は、充電電流の設定から当
該蓄電池の放電特性が、第３図に示したメモリ効果の状
態にあると判断される。すると、制御部（13）はLED等
の警報装置（14）を作動させて（ステツプ111）使用者
にメモリ効果の発生を警告する。When the time required for full charge is less than 50 minutes and the voltage before the start of charge is less than 1.1 V, the discharge characteristic of the storage battery is changed from the state of the memory effect shown in FIG. It is determined that there is. Then, the control unit (13) activates an alarm device (14) such as an LED (step 111) to warn the user of the occurrence of the memory effect.
尚、この発明は上記一実施例に限定されるべきではな
く、充電完了の方法として−ΔＶ検出によるものに代え
て、Ｖテーパ制御等の他の電圧検出制御方式や温度検出
制御方式を用いてもよい。It should be noted that the present invention is not limited to the above-described embodiment, and may use another voltage detection control method such as V taper control or a temperature detection control method instead of the method using −ΔV detection as a method of completing charging. Is also good.
又、より簡素な構成のものとして放電回路（11）を設
けず、第２図に示したステツプ101から直接ステツプ106
へ至り、ステツプ110を省略するものも考えられる。こ
の場合は、充電時間が50分未満の場合に警報がオンとな
る。このメモリ効果の警報が表示されたときの蓄電池
は、容量が残存していたものか、或いはメモリ効果が発
生したものであり。充電以前に残存容量０と判断した蓄
電池、即ち使用機器が作動を停止するまで使用した蓄電
池の場合は、メモリ効果が発生したと判断することがで
きる。Further, the discharge circuit (11) is not provided as a simpler structure, and the step 106 is directly performed from the step 101 shown in FIG.
And the step 110 may be omitted. In this case, the alarm is turned on when the charging time is less than 50 minutes. When the memory effect warning is displayed, the storage battery has the remaining capacity or has the memory effect. In the case of a storage battery that has been determined to have a remaining capacity of 0 before charging, that is, a storage battery that has been used until the used device stops operating, it can be determined that a memory effect has occurred.
［発明の効果］ 請求項（１）記載の発明は、蓄電池を放電させること
によつて残存容量による電圧差を拡大し、残存容量の判
定を確実にしている。そして、充電時間と、放電させた
ときの測定電圧とによつてメモリ効果の有無が判定され
る。即ち、充電時間が規定時間より短く、測定電圧が所
定電圧以下のときはメモリ効果が発生していると判定す
ることができる。[Effect of the Invention] According to the invention described in claim (1), the voltage difference due to the remaining capacity is expanded by discharging the storage battery, and the determination of the remaining capacity is ensured. Then, the presence or absence of the memory effect is determined based on the charging time and the measured voltage at the time of discharging. That is, when the charging time is shorter than the specified time and the measured voltage is equal to or lower than the predetermined voltage, it can be determined that the memory effect has occurred.
請求項（２）記載の発明の充電器は、上記判定方法に
基き充電すべき蓄電池のメモリ効果を判定する共に、使
用者に警告を与えるので、使用者はメモリ効果が発生し
た蓄電池を完全放電させることによりメモリ効果を消滅
させて、見掛け上の容量低下を解消することができる。The battery charger according to the present invention determines the memory effect of the storage battery to be charged based on the determination method and gives a warning to the user, so that the user completely discharges the storage battery in which the memory effect has occurred. By doing so, the memory effect is extinguished and an apparent decrease in capacity can be resolved.
従って、ニツケルカドミウム蓄電池の機能低下の防止
に著しい効果を発揮する実用的価値ある発明である。Therefore, the present invention is a practically valuable invention exhibiting a remarkable effect in preventing the function of a nickel cadmium storage battery from being deteriorated.
第１図及び第２図は本発明の一実施例を示し、第１図は
充電器の回路ブロツク図、第２図はメモリ効果警告装置
の制御手順を表すフローチヤートであり、第３図はメモ
リ効果を表すニツケルカドミウム蓄電池の放電特性のグ
ラフである。 （１）……充電器 （10）……メモリ効果警告装置 （11）……放電回路、（12）……A/Dコンバータ （13）……制御部、（14）……警報装置1 and 2 show one embodiment of the present invention, FIG. 1 is a circuit block diagram of a charger, FIG. 2 is a flowchart showing a control procedure of a memory effect warning device, and FIG. 3 is a flowchart. 5 is a graph of a discharge characteristic of a nickel cadmium storage battery showing a memory effect. (1) Charger (10) Memory effect warning device (11) Discharge circuit (12) A / D converter (13) Control unit (14) Alarm device
Claims (2)
し、前記蓄電池の電圧を計測して記憶し、次に充電開始
から充電完了までの充電時間の計測を行い、該充電時間
が規定時間以内であり、更に記憶した計測電圧が所定電
圧以下のときは、メモリ効果によるものと判定する蓄電
池のメモリ効果判別方法。1. A storage battery is connected to a discharge circuit and discharged for a predetermined time, a voltage of the storage battery is measured and stored, and a charging time from the start of charging to the completion of charging is measured. A memory effect determination method for a storage battery which determines that the measured voltage is due to a memory effect when the measured voltage is within a predetermined time and the stored measured voltage is equal to or lower than a predetermined voltage.
検出回路を設けた充電器に於て、請求項（１）記載のメ
モリ効果判別方法のプログラムを入力した制御部と、充
電開始から充電完了までの時間を計測するタイマー手段
と、警報装置とを設け、規定時間以下で充電を完了した
ときは、前記警報装置を作動させて前記蓄電池のメモリ
効果発生を警告するように制御部を構成したことを特徴
とするメモリ効果警告装置。2. A charging device comprising a full-charge detecting circuit for detecting completion of charging and stopping charging, a control unit to which a program for the memory effect discriminating method according to claim 1 is input, and charging starting. A timer means for measuring the time from the completion of the charging to the completion of charging, and an alarm device, and when the charging is completed within a specified time or less, the control unit controls the alarm device to activate and warn of the occurrence of the memory effect of the storage battery. A memory effect warning device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2164899A JP2890702B2 (en) | 1990-06-23 | 1990-06-23 | Method for determining memory effect of storage battery and memory effect warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2164899A JP2890702B2 (en) | 1990-06-23 | 1990-06-23 | Method for determining memory effect of storage battery and memory effect warning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0454833A JPH0454833A (en) | 1992-02-21 |
| JP2890702B2 true JP2890702B2 (en) | 1999-05-17 |
Family
ID=15801983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2164899A Expired - Fee Related JP2890702B2 (en) | 1990-06-23 | 1990-06-23 | Method for determining memory effect of storage battery and memory effect warning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2890702B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3628123B2 (en) * | 1996-08-21 | 2005-03-09 | シチズン時計株式会社 | Rechargeable electronic watch |
| JP4870268B2 (en) * | 2001-01-18 | 2012-02-08 | 本田技研工業株式会社 | Secondary battery life judgment method |
-
1990
- 1990-06-23 JP JP2164899A patent/JP2890702B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0454833A (en) | 1992-02-21 |
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