JP2000243457A - Method for charging lead-acid battery - Google Patents

Method for charging lead-acid battery

Info

Publication number
JP2000243457A
JP2000243457A JP11046236A JP4623699A JP2000243457A JP 2000243457 A JP2000243457 A JP 2000243457A JP 11046236 A JP11046236 A JP 11046236A JP 4623699 A JP4623699 A JP 4623699A JP 2000243457 A JP2000243457 A JP 2000243457A
Authority
JP
Japan
Prior art keywords
charge
charging
current
amount
stage
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.)
Granted
Application number
JP11046236A
Other languages
Japanese (ja)
Other versions
JP4120084B2 (en
Inventor
Hiroyuki Imai
宏之 今井
Original Assignee
Matsushita Electric Ind Co Ltd
松下電器産業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Ind Co Ltd, 松下電器産業株式会社 filed Critical Matsushita Electric Ind Co Ltd
Priority to JP04623699A priority Critical patent/JP4120084B2/en
Publication of JP2000243457A publication Critical patent/JP2000243457A/en
Application granted granted Critical
Publication of JP4120084B2 publication Critical patent/JP4120084B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

PROBLEM TO BE SOLVED: To provide a proper charge to a lead-acid battery by allowing a charge current to have a specific relationship in a multistage constant-current charge finished in the nth process. SOLUTION: Shown in an expression is a charge current: in the expression, I1 is the charge current of a first process, n is an integral of 3 or more. Preferably, the charge in the last stage is an amount of charge electricity until the previous stage or three or more of multi-stage constant-current charge finished by the time calculated by charge time; where the number of charge stages is n, the charge current has a relationship shown in the expression. By setting the charge current low, the rise of the electric current density is low so that the reduction in the amount of charge electricity from the discharge condition to hydrogen generation due to repeated cycles can be suppressed. Accordingly, when the electric current is set low, accuracy of the amount of discharge electricity until the hydrogen generation assumed from the amount of the charge electricity becomes high. Since low charge current prolongs charge time, setting the charge current so low is not preferable.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】本発明は鉛蓄電池の充電方法
に関するものである。
The present invention relates to a method for charging a lead storage battery.
【0002】[0002]
【従来の技術】鉛蓄電池の充電方法としては、定電圧充
電,準定電圧充電,定電流充電,二段定電流充電等の種
々の充電方式がある。そして、鉛蓄電池のサイクル寿命
の能力を充分に発揮させるためには、充電不足や過充電
のない適正充電が求められている。この中で二段定電流
充電は取扱いの容易さから広く採用されている。従来採
用されてきた二段定電流充電は、1段目の充電で電池の
充電電圧を検出して、2段目の充電で低い電流に変化さ
せタイマーにて充電を終了させる方式である。
2. Description of the Related Art As a method for charging a lead storage battery, there are various charging methods such as constant voltage charging, semi-constant voltage charging, constant current charging, and two-stage constant current charging. Then, in order to fully exhibit the cycle life capability of the lead storage battery, proper charging without insufficient charging or overcharging is required. Among them, the two-stage constant current charging is widely adopted because of its easy handling. Conventional two-stage constant current charging is a method in which the charging voltage of a battery is detected in the first-stage charging, the current is changed to a low current in the second-stage charging, and the charging is terminated by a timer.
【0003】[0003]
【発明が解決しようとする課題】二段定電流充電は充電
電池電圧が検出電圧に達するまでの時間が1段目の充電
電気量を左右する。1段目の充電電気量は放電電気量に
対してほぼ一定の比率となるため放電電気量が一定であ
れば適切な充電量の充電を行うことができる。しかし、
通常のサイクル用途では放電電気量が一定しない。2段
目の充電は、予め充電時間を設定したタイマーによって
充電前の放電電気量の大小に関係なく一定の電気量を鉛
蓄電池に供給することになる。この結果、充電前の放電
が浅い場合は過充電、放電が深い場合は充電不足となる
可能性があり、放電電気量の一定しない使用条件では、
適正充電となるタイマー時間の設定が難しかった。本発
明は、従来の二段定電流充電方式の欠点の一つである充
電前の放電電気量の多少に関係なく一定の充電電気量を
鉛蓄電池に供給してしまうという課題を解決し、鉛蓄電
池に過不足の少ない適正充電を行なう充電方法を提供す
ることを目的とするものである。
In the two-stage constant current charging, the time until the voltage of the rechargeable battery reaches the detection voltage determines the amount of electricity charged in the first stage. The amount of charge in the first stage has a substantially constant ratio with respect to the amount of discharge, so that if the amount of discharge is constant, it is possible to charge an appropriate amount of charge. But,
In normal cycle applications, the amount of discharge electricity is not constant. In the second-stage charging, a constant amount of electricity is supplied to the lead storage battery by a timer in which a charging time is set in advance, regardless of the amount of discharged electricity before charging. As a result, if the discharge before charging is shallow, overcharging may occur, while if discharging is deep, insufficient charging may occur.
It was difficult to set the timer time for proper charging. The present invention solves one of the drawbacks of the conventional two-stage constant current charging system, namely, the problem of supplying a constant amount of charged electricity to a lead storage battery regardless of the amount of discharged electricity before charging. It is an object of the present invention to provide a charging method for performing proper charging of a storage battery with little excess or deficiency.
【0004】[0004]
【課題を解決するための手段】本発明は、鉛蓄電池の充
電電圧を検出して、次の充電工程へ進む工程を少なくと
も2つ以上有し、これに続く定電流充電を有する充電方
式において、充電電流を制御するものであり、第n工程
で充電が終了する多段定電流充電で、第一工程の充電電
流をI1 、第n工程の充電電流をInとした時、充電電
流を I1 >I2 > … >In-1 ≦In (但しnは3以上の
整数とする) とする充電方法とした。
According to the present invention, there is provided a charging system having at least two or more steps for detecting a charging voltage of a lead storage battery and proceeding to a next charging step, followed by a constant current charging. In the multi-stage constant current charging in which charging is completed in the n-th step, when the charging current in the first step is I 1 and the charging current in the n-th step is In, the charging current is I 1 > I 2>...> I n -1 ≦ I n ( where n is a integer of 3 or more) was charging method to.
【0005】[0005]
【発明の実施の形態】鉛蓄電池において通常の検出電圧
である2.40〜2.45V/セルは常温での水素が発
生し始める電圧であるが、鉛蓄電池の充放電の繰り返し
により負極の鉛粒子が凝集することになり凝集した鉛粒
子の表面積が小さくなる。そして鉛粒子の表面積が小さ
くなると、電流密度は大きくなり、充放電反応の効率が
低下してきて水素が発生し易くなるとともに充電電圧は
上昇し易くなる。したがって充放電の繰り返しにより、
放電状態から水素が発生するまでの充電電気量が少なく
なる。
DESCRIPTION OF THE PREFERRED EMBODIMENTS In a lead storage battery, the normal detection voltage of 2.40 to 2.45 V / cell is a voltage at which hydrogen starts to be generated at room temperature. The particles are aggregated, and the surface area of the aggregated lead particles is reduced. When the surface area of the lead particles decreases, the current density increases, the efficiency of the charge / discharge reaction decreases, hydrogen is easily generated, and the charging voltage is easily increased. Therefore, by repeating charge and discharge,
The amount of electricity charged from the discharged state to the generation of hydrogen is reduced.
【0006】そこで充電電流を低く設定することによ
り、電流密度の上昇を低くしてサイクルの繰り返しによ
る放電状態から水素が発生するまでの充電電気量の低下
を抑えることができる。したがって、電流を低く設定し
た時の水素発生まで充電電気量から放電電気量の推定の
精度が高くなる。しかし、充電電流を低くすると充電時
間が長くなるため、あまり充電電流を低くすることは好
ましくない。そこで充電の最も低い電流で充電電圧を検
出することにより、設定した充電条件の中で最も高い精
度で充電電気量から放電電気量を推定することができ
る。
[0006] Therefore, by setting the charging current low, it is possible to suppress the decrease in the amount of charge from the discharge state due to the repetition of the cycle to the generation of hydrogen by reducing the rise in the current density. Therefore, the accuracy of estimating the amount of discharged electricity from the amount of charged electricity increases until the generation of hydrogen when the current is set low. However, if the charging current is reduced, the charging time becomes longer, so it is not preferable to reduce the charging current too much. Therefore, by detecting the charging voltage with the lowest current for charging, the amount of discharged electricity can be estimated from the amount of charged electricity with the highest accuracy among the set charging conditions.
【0007】[0007]
【実施例】電圧12V,定格容量60Ahの密閉型鉛蓄
電池にて充電電気量の測定と充放電サイクル試験を行っ
た。
EXAMPLE A charge amount measurement and a charge / discharge cycle test were performed on a sealed lead-acid battery having a voltage of 12 V and a rated capacity of 60 Ah.
【0008】充電仕様としてはn=5の5段定電流充電
とし、1段目を0.2CA、2段目を0.1CA、3段
目を0.05CA、4段目を0.025CA、5段目を
0.025CAで1〜4段目の充電を電圧を検出して終
了する方式として、検出電圧は2.4V/セルすなわち
14.4Vで行い、5段目の充電をタイマーにて終了す
る方式とした。放電はパターン放電で12Ahと44A
hの電気量で確認した。周囲温度は25±2℃とした。
この蓄電池の充電特性を図1に示す。図2には、44A
h放電電気量での初期と200サイクルでの1〜4段目
の充電電気量の推移を示した。
The charging specifications are five-stage constant current charging with n = 5, the first stage is 0.2 CA, the second stage is 0.1 CA, the third stage is 0.05 CA, the fourth stage is 0.025 CA, As a method of detecting the voltage at the fifth stage at 0.025 CA and terminating the charging at the first to fourth stages, the detected voltage is 2.4 V / cell, that is, 14.4 V, and the charging at the fifth stage is performed by a timer. The system was terminated. Discharge is 12Ah and 44A by pattern discharge
h. The ambient temperature was 25 ± 2 ° C.
FIG. 1 shows the charging characteristics of this storage battery. FIG.
The transition of the amount of charged electricity in the first stage and the first to fourth stages in 200 cycles after the initial stage with the amount of discharged electricity is shown.
【0009】図2の結果より明らかなように0.2C
A,0.1CAの充電電気量はサイクル経過とともに明
らかに低下していることが判る。一方、0.025C
A,0.05CAの充電電気量はサイクル経過による変
化が少なく安定していることが判る。
As is clear from the results of FIG.
It can be seen that the charge amount of A, 0.1 CA clearly decreases as the cycle progresses. On the other hand, 0.025C
It can be seen that the charge amount of A, 0.05 CA is stable with little change over the course of the cycle.
【0010】次に図3には、12Ah放電後と44Ah
放電後の充電時の1〜4段目の充電電気量を示した。
Next, FIG. 3 shows that after the discharge of 12 Ah and 44 Ah
The amounts of charge in the first to fourth stages during charging after discharging are shown.
【0011】図3の結果より明らかなように12Ah放
電後と44Ah放電後の充電不足量(放電電気量と充電
電気量の差)の差が電流が低いほど少なくなっているこ
とが判る。
As is apparent from the results shown in FIG. 3, the difference between the insufficient charge (difference between the amount of discharged electricity and the amount of charged electricity) after the discharge of 12 Ah and the discharge of 44 Ah is smaller as the current is lower.
【0012】すなわち、低い充電電流で電圧を検出する
ことによりサイクル経過による充電電気量の変化、放電
電気量の違いによる充電電気量の変化が少なく充電する
ことができる。
That is, by detecting the voltage with a low charging current, the charging can be performed with little change in the amount of charged electricity due to the lapse of the cycle and in the amount of charged electricity due to the difference in the amount of discharged electricity.
【0013】しかし、前述したように、充電電流を低く
すると充電時間が長くなるので、充電中の最も低い電流
で検出電圧まで充電し、さらにその電流と同じか、それ
以上の電流で一定時間充電することにより、過不足のな
い充電が可能となる。
However, as described above, when the charging current is reduced, the charging time becomes longer. Therefore, the charging is performed with the lowest current during the charging up to the detection voltage, and further, the charging is performed for a certain time with the same or higher current. By doing so, charging without excess and deficiency becomes possible.
【0014】[0014]
【発明の効果】以上のように、サイクル用途の鉛蓄電池
に本発明の充電パターンを用いることにより鉛蓄電池の
過不足のない充電が可能となり、実用上極めて有用であ
る。
As described above, by using the charge pattern of the present invention for a lead storage battery for cycle use, it is possible to charge the lead storage battery without excess or deficiency, which is extremely useful in practice.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明による充電特性を示す図FIG. 1 is a diagram showing charging characteristics according to the present invention.
【図2】44Ah放電後の充電電気量の各充電電流での
サイクルによる推移を示す図
FIG. 2 is a diagram showing a change in the amount of charge after 44 Ah discharge with each charge current cycle.
【図3】12Ah放電後と44Ah放電後の各充電電流
での放電電気量と充電電気量の差を示す図
FIG. 3 is a diagram showing the difference between the amount of discharged electricity and the amount of charged electricity at each charge current after 12Ah discharge and after 44Ah discharge.

Claims (2)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 鉛蓄電池の充電電圧を検出した後、次段
    の充電へ進み、最終段の充電は任意に設定した時間で終
    了する3段以上の多段定電流充電方式において、充電段
    数をn段とした時、充電電流Iが I1 >I2 > … >In-1 ≦In (但しnは3以上の
    整数とする) とすることを特徴とする鉛蓄電池の充電方法。
    After detecting the charge voltage of a lead storage battery, the process proceeds to the next stage charging, and the last stage charging is completed in an arbitrarily set time. when the stage, the charging current I is I 1> I 2> ...> a method of charging a lead-acid battery, characterized in that the I n-1 ≦ I n (where n is a integer of 3 or more).
  2. 【請求項2】 鉛蓄電池の充電電圧を検出した後、次段
    の充電へ進み、最終段の充電は前の段までの充電電気量
    または充電時間より算出した時間で終了する3段以上の
    多段定電流充電方式において、充電段数をn段とした
    時、充電電流Iが I1 >I2 > … >In-1 ≦In (但しnは3以上の
    整数とする) とすることを特徴とする鉛蓄電池の充電方法。
    2. After detecting the charging voltage of the lead storage battery, the process proceeds to the next stage charging, and the final stage charging is completed in three or more stages, which is completed in the time calculated from the amount of charge electricity or the charging time up to the previous stage. in the constant current charging method, when the charging stages is n stages, characterized in that the charging current I and I 1> I 2>...> I n-1 ≦ I n ( where n is a integer of 3 or more) Method for charging lead storage batteries.
JP04623699A 1999-02-24 1999-02-24 Lead-acid battery charging method Expired - Lifetime JP4120084B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04623699A JP4120084B2 (en) 1999-02-24 1999-02-24 Lead-acid battery charging method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04623699A JP4120084B2 (en) 1999-02-24 1999-02-24 Lead-acid battery charging method

Publications (2)

Publication Number Publication Date
JP2000243457A true JP2000243457A (en) 2000-09-08
JP4120084B2 JP4120084B2 (en) 2008-07-16

Family

ID=12741500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04623699A Expired - Lifetime JP4120084B2 (en) 1999-02-24 1999-02-24 Lead-acid battery charging method

Country Status (1)

Country Link
JP (1) JP4120084B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007214052A (en) * 2006-02-10 2007-08-23 Gs Yuasa Corporation:Kk Method of charging lead-acid battery
WO2012070190A1 (en) * 2010-11-25 2012-05-31 パナソニック株式会社 Charging control circuit, battery driven apparatus, charging apparatus, and charging method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007214052A (en) * 2006-02-10 2007-08-23 Gs Yuasa Corporation:Kk Method of charging lead-acid battery
WO2012070190A1 (en) * 2010-11-25 2012-05-31 パナソニック株式会社 Charging control circuit, battery driven apparatus, charging apparatus, and charging method
JP4988974B2 (en) * 2010-11-25 2012-08-01 パナソニック株式会社 Charging control circuit, battery-driven device, charging device, and charging method
US20120293114A1 (en) * 2010-11-25 2012-11-22 Harumi Murochi Charge control circuit, battery-operated device, charging apparatus and charging method
US8421406B2 (en) 2010-11-25 2013-04-16 Panasonic Corporation Charge control circuit, battery-operated device, charging apparatus and charging method
RU2494514C1 (en) * 2010-11-25 2013-09-27 Панасоник Корпорэйшн Charge control circuit, device operating from battery, charging device and method of charging

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