JPH07230828A - Charging method for lead-acid battery - Google Patents
Charging method for lead-acid batteryInfo
- Publication number
- JPH07230828A JPH07230828A JP6021032A JP2103294A JPH07230828A JP H07230828 A JPH07230828 A JP H07230828A JP 6021032 A JP6021032 A JP 6021032A JP 2103294 A JP2103294 A JP 2103294A JP H07230828 A JPH07230828 A JP H07230828A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- charging
- voltage
- batteries
- block
- 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.)
- Pending
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
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、鉛蓄電池を無停電電源
装置(UPS)等の電源に用いる際にその充電、とくに
トリクル充電方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead-acid battery for charging a power source such as an uninterruptible power supply (UPS), and more particularly to a trickle charging method.
【0002】[0002]
【従来の技術】鉛蓄電池は、UPS等の電源に用いる際
には単セルまたはモノブロックの電池を多数個直列にて
用いることが多く、充電時の温度ばらつきやモノブロッ
ク電池間の電圧ばらつきが電池のトリクル寿命に影響を
与えていた。このため、充電電圧には周囲温度による温
度傾斜を設定したり、均等充電と呼ばれる充電方法によ
り電池の充電が均一となるような工夫がなされていた。2. Description of the Related Art Lead acid batteries are often used in series when they are used as a power source for UPS and the like, and many single cells or monoblock batteries are used in series. It affected the trickle life of the battery. For this reason, the charging voltage is set to have a temperature gradient depending on the ambient temperature, and the charging method called uniform charging has been devised so that the battery is uniformly charged.
【0003】[0003]
【発明が解決しようとする課題】しかし、従来のモノブ
ロック電池を多数個直列接続して用いる場合は、通常2
5℃では2.3V/セルの充電電圧にて、定電圧充電し
て用いられているが、多数個の電池を直列接続使用する
際には、電池間の電圧ばらつきが電池のトリクル寿命に
影響を与えていた。However, when a large number of conventional monoblock batteries are connected in series, it is usually 2
At 5 ° C, the battery is used with constant voltage charging at a charging voltage of 2.3 V / cell, but when multiple batteries are connected in series, the voltage variation between the batteries affects the trickle life of the batteries. Was being given.
【0004】定電圧充電を行う場合は、モノブロックの
電池間の充電電圧ばらつきを小さくすることにより、電
池のトリクル寿命を長くすることや、N個の電池の寿命
ばらつきを小さくすることができた。しかし、通常、N
個の電池を直列接続状態で用いていると、セル間の充電
電圧のばらつきが大きくなり、直列数が多くなればなる
ほどばらつきは拡大されるという問題点があった。その
ため、電池のトリクル寿命は電池ごとにばらつき、直列
数の単位では寿命が短くなるという問題点を有してい
た。When constant voltage charging is performed, it is possible to extend the trickle life of the batteries by reducing the variation of the charging voltage between the monoblock batteries, and to reduce the variation of the life of N batteries. . But usually N
When individual batteries are used in series connection, there is a problem that the variation in charging voltage between cells increases, and the variation increases as the number of series increases. Therefore, there is a problem that the trickle life of the battery varies from battery to battery, and the life becomes short in the unit of the number of series.
【0005】本発明は、上記従来の問題点を解決するも
ので、UPS等の多直列にて電池を電源に用いる際に、
電源電池のトリクル長寿命化を図り、同時に電池の寿命
を推定するものである。The present invention solves the above-mentioned conventional problems, and when using a battery as a power source in multiple series such as UPS,
The trickle of the power supply battery is extended, and at the same time, the life of the battery is estimated.
【0006】[0006]
【課題を解決するための手段】上記の課題を解決するた
め、本発明はN個の電池を直列接続して用いる充電方法
において、2ブロック以上、N/3ブロック以下の区分
にN個の電池を区分し、それぞれのブロック間の電池電
圧の充電時あるいは放電時あたりの電圧変動幅を測定
し、あらかじめ定めた値よりもその変動幅が大きくなっ
た時に、放電時間が長くなったことを把握してUPSな
どの機器にメンテナンス要求あるいは電池交換を表示す
るものである。In order to solve the above problems, the present invention provides a charging method in which N batteries are connected in series, and N batteries are divided into sections of 2 blocks or more and N / 3 blocks or less. By measuring the voltage fluctuation range of the battery voltage between each block at the time of charging or discharging, it is understood that the discharging time becomes longer when the fluctuation range becomes larger than the predetermined value. Then, a maintenance request or battery replacement is displayed on a device such as UPS.
【0007】トリクル充電に用いられる電池の劣化モー
ドの最大の要因は、電解液の減少により電池の内部抵抗
が増大することであり、電池の内部抵抗を上記の電圧変
動幅として検知することで電池の寿命劣化の状態を推定
することができる。The greatest cause of the deterioration mode of the battery used for trickle charging is that the internal resistance of the battery increases due to the decrease in the electrolytic solution. By detecting the internal resistance of the battery as the above-mentioned voltage fluctuation range, the battery It is possible to estimate the life deterioration state of the.
【0008】これらの機能を電池もしくはUPSなどの
機器に付加することにより、停電等の非常時に用いるU
PS等のシステムが、電源電池に起因する原因でダウン
してコンピューターのバックアップができなくなるとい
ったことを防止するものである。By adding these functions to a device such as a battery or UPS, a U used in an emergency such as a power outage
This is to prevent a system such as a PS from going down due to a power supply battery and being unable to back up a computer.
【0009】[0009]
【作用】上記の機能を電源電池に付加することにより、
コンピュータのバックアップ等に用いられるUPSの電
池寿命末期における信頼性を高め、コンピュータシステ
ムのシステムダウンを防止するものである。[Operation] By adding the above function to the power battery,
The reliability of UPS used for backup of computers and the like at the end of battery life is improved and system down of the computer system is prevented.
【0010】[0010]
【実施例】以下に本発明の実施例を、公称12V、1.
3AHのモノブロック電池を24個直列接続し、充電は
最大電流0.26A、充電電圧217.6Vの定電圧充
電を行うUPSの場合を例に説明する。EXAMPLES Examples of the present invention will be described below with nominal 12V, 1.V.
An example of UPS in which 24 3 AH monoblock batteries are connected in series and constant voltage charging with a maximum current of 0.26 A and a charging voltage of 217.6 V is performed will be described as an example.
【0011】この24個の電池を8個づつ3ブロックに
分け、それぞれのブロックごとに電池電圧を測定できる
ようにした。The 24 batteries were divided into 3 blocks of 8 cells so that the battery voltage could be measured for each block.
【0012】充電時の単位時間当たりの電圧変動は、 dVC/dt=d(IC×n×RO)/dt で表される。ここで、ICは放電電流、nは係数、ROは
初期の電池の内部抵抗を意味する。一方、放電時の単位
時間当たりの電圧変動は、 dVD/dt=d(ID×n×RO)/dt で表される。これらの変動幅を、各ブロックごとに測定
し、電池品種、直列数などにより、あらかじめ定めた変
動幅を越えたときに、電池の寿命表示をするものであ
る。The voltage fluctuation per unit time during charging is represented by dV C / dt = d (I C × n × R O ) / dt. Here, I C is the discharge current, n is the coefficient, and R O is the initial internal resistance of the battery. On the other hand, the voltage fluctuation per unit time at the time of discharging is represented by dV D / dt = d (I D × n × R O ) / dt. These fluctuation widths are measured for each block, and when the fluctuation width exceeds a predetermined fluctuation width according to the battery type, the number of series, etc., the battery life is displayed.
【0013】実施例の場合は、dt=3秒とすると、充
電時の電圧変動は図1に示すように電池のトリクル使用
期間が長くなるにつれて大きくなり、電池のばらつきが
拡大されていくことが明らかである。In the case of the embodiment, when dt = 3 seconds, the voltage fluctuation during charging becomes larger as the trickle usage period of the battery becomes longer as shown in FIG. 1, and the dispersion of the battery becomes larger. it is obvious.
【0014】放電時には、放電負荷を一定とした時の電
圧変動も図1と同様に得られる。これは周囲温度が30
℃での結果であるが、周囲温度が変化したときは、電圧
変動幅に温度傾斜を加えれば良く、本実施例は同様に機
能することは明らかである。また、放電および充電開始
時の電圧変化の例を図2に示す。At the time of discharge, the voltage fluctuation when the discharge load is constant can be obtained as in FIG. This has an ambient temperature of 30
Although the results are in ° C., when the ambient temperature changes, it is clear that the present embodiment functions in the same manner by adding a temperature gradient to the voltage fluctuation range. Further, FIG. 2 shows an example of voltage change at the time of starting discharging and charging.
【0015】電池の直列接続数が多い場合は、dV/d
tのばらつきが大きくなるが、直列数を2ブロック以
上、N/3ブロック以下に分割することにより、dV/
dtのばらつきを小さくし、電池寿命予測の信頼度を高
めることができる。When the number of batteries connected in series is large, dV / d
Although the variation of t becomes large, by dividing the number of series into two blocks or more and N / 3 blocks or less, dV /
It is possible to reduce the variation of dt and improve the reliability of battery life prediction.
【0016】これらの変動幅は、電池の種類、充電電
流、放電負荷によりあらかじめ求めておき、内部メモリ
ーとしてUPSなどに記憶させておき、必要に応じて照
合すると電池の寿命を予測することができる。このフロ
ーを図3に示す。These fluctuation ranges can be obtained in advance from the type of battery, charging current and discharging load, stored in UPS or the like as an internal memory, and collated as necessary to predict the battery life. . This flow is shown in FIG.
【0017】[0017]
【発明の効果】上記のように、本発明によればUPS等
の非常用電源に用いられる電池の寿命を事前に検知する
ことが可能となり、システムの信頼性を確保する上でそ
の効果は極めて大きい。As described above, according to the present invention, it is possible to detect the life of a battery used for an emergency power source such as UPS in advance, and it is extremely effective in securing the reliability of the system. large.
【図1】本発明による充電時のdVC/dtとトリクル
使用期間との関係図FIG. 1 is a relationship diagram between dV C / dt during charging and trickle usage period according to the present invention.
【図2】放電および充電開始時の時間と電圧変化との関
係を示す図FIG. 2 is a diagram showing a relationship between time at the time of starting discharging and charging and voltage change
【図3】電池寿命予測のフローを示す図FIG. 3 is a diagram showing a flow of battery life prediction.
Z 図1で定義する幅 B 各ブロック間の最大偏差の設定値 Z Width defined in Fig. 1 B Set value of maximum deviation between blocks
Claims (4)
個(N≧4)直列接続して用いる充電方法において、N
個の電池を2ブロック以上、N/3ブロック以下に区分
し、各ブロックごとに電圧変動を測定して電池の放電時
間を推定する鉛蓄電池の充電方法。1. A single cell or monoblock lead-acid battery
In a charging method of connecting (N ≧ 4) pieces in series,
A method of charging a lead storage battery in which each battery is divided into two blocks or more and N / 3 blocks or less, and a voltage fluctuation is measured for each block to estimate the discharge time of the battery.
の電圧変動幅として測定する請求項1記載の鉛蓄電池の
充電方法。2. The charging method for a lead storage battery according to claim 1, wherein the voltage fluctuation is measured as a voltage fluctuation width per unit time at the start of charging.
の電圧変動幅として測定する請求項1記載の鉛蓄電池の
充電方法。3. The method of charging a lead storage battery according to claim 1, wherein the voltage fluctuation is measured as a voltage fluctuation width per unit time at the start of discharge.
始時または放電開始時の単位時間あたりの電圧変動幅に
温度傾斜を加えて電池の放電時間を推定する請求項1記
載の鉛蓄電池の充電方法。4. The lead-acid battery according to claim 1, wherein the battery voltage for each block is measured, and the discharge time of the battery is estimated by adding a temperature gradient to the voltage fluctuation width per unit time at the start of charging or at the start of discharging. How to charge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6021032A JPH07230828A (en) | 1994-02-18 | 1994-02-18 | Charging method for lead-acid battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6021032A JPH07230828A (en) | 1994-02-18 | 1994-02-18 | Charging method for lead-acid battery |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07230828A true JPH07230828A (en) | 1995-08-29 |
Family
ID=12043642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6021032A Pending JPH07230828A (en) | 1994-02-18 | 1994-02-18 | Charging method for lead-acid battery |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07230828A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1302576C (en) * | 2002-02-28 | 2007-02-28 | 布莱克和戴克公司 | Battery charger and charging method |
JP2007228726A (en) * | 2006-02-23 | 2007-09-06 | Sanyo Electric Co Ltd | Power supply device for vehicle |
JP2010519692A (en) * | 2007-04-20 | 2010-06-03 | 杭州高特電子設備有限公司 | Control valve type lead-acid battery performance analysis method |
-
1994
- 1994-02-18 JP JP6021032A patent/JPH07230828A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1302576C (en) * | 2002-02-28 | 2007-02-28 | 布莱克和戴克公司 | Battery charger and charging method |
JP2007228726A (en) * | 2006-02-23 | 2007-09-06 | Sanyo Electric Co Ltd | Power supply device for vehicle |
JP4553853B2 (en) * | 2006-02-23 | 2010-09-29 | 三洋電機株式会社 | Power supply for vehicle |
JP2010519692A (en) * | 2007-04-20 | 2010-06-03 | 杭州高特電子設備有限公司 | Control valve type lead-acid battery performance analysis method |
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