JPH03274479A - Method of determining lifetime of lead storage battery - Google Patents
Method of determining lifetime of lead storage batteryInfo
- Publication number
- JPH03274479A JPH03274479A JP2077440A JP7744090A JPH03274479A JP H03274479 A JPH03274479 A JP H03274479A JP 2077440 A JP2077440 A JP 2077440A JP 7744090 A JP7744090 A JP 7744090A JP H03274479 A JPH03274479 A JP H03274479A
- Authority
- JP
- Japan
- Prior art keywords
- internal impedance
- current
- measured
- storage battery
- lead
- 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
- 238000000034 method Methods 0.000 title claims description 9
- 239000002253 acid Substances 0.000 claims description 20
- 238000005259 measurement Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 206010011906 Death Diseases 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Tests Of Electric Status Of Batteries (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は鉛蓄電池の寿命判定方法に関するもので、さら
に詳しく言えば浮動状態で使用される鉛蓄電池の寿命判
定方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for determining the lifespan of a lead-acid battery, and more particularly to a method for determining the lifespan of a lead-acid battery used in a floating state.
従来技術とその問題点
鉛蓄電池は、電動車両などに搭載され充放電を反復させ
る用途と、非常用電源装置などに搭載されて浮動充電状
態で使用される用途とがあり、それぞれに用′１１！に
応じた寿命判定方法が知られている。すなわち、前者に
ついては、充放電中の端子電圧の変化を測定したり、放
電容量を測定することによって寿命の判定を行うことが
できるが、後者については、非常用に備えられているた
め、前者の方法が使用できす、内部インピーダンスを測
定することによって寿命の判定が行われている。ところ
が、浮動充電状態で使用される場合、充電用電源には商
用電源が用いられ、整流器を介して得られる充電電流に
は商用周波数成分のりフグルミ流が含有されている。そ
のため、内部インピーダンスを測定するための測定電流
が前述したリップ／Ｌ／′ＷＬ流の側番を受けて測定値
が不安定になるという欠点があった。Conventional technology and its problems Lead-acid batteries have two uses: one is installed in electric vehicles and is repeatedly charged and discharged, and the other is installed in emergency power supplies and used in a floating charging state. ! Lifespan determination methods are known. In other words, for the former, the lifespan can be determined by measuring the change in terminal voltage during charging and discharging or by measuring the discharge capacity, but for the latter, it is prepared for emergency use, so However, the lifespan is determined by measuring the internal impedance. However, when used in a floating charging state, a commercial power source is used as the charging power source, and the charging current obtained through the rectifier contains a commercial frequency component, ie, a floating current. Therefore, there is a drawback that the measurement current for measuring the internal impedance is influenced by the above-mentioned lip/L/'WL flow, making the measured value unstable.
発明の目的
本発明は上記欠点を解消するもので、内部インピーダン
ス測定器の測定電流を充電電流に含有されるリップル電
流から減算させ、内部インピーダンス測定器の測定電圧
を前記差電流で除して鉛蓄電池の内部インピーダンスを
測定することにより、安定した測定値を得ることを目的
とする。OBJECT OF THE INVENTION The present invention solves the above-mentioned drawbacks, and the purpose of the present invention is to subtract the measured current of the internal impedance measuring device from the ripple current contained in the charging current, and divide the measured voltage of the internal impedance measuring device by the difference current. The purpose is to obtain stable measured values by measuring the internal impedance of storage batteries.
発明の構成
本発明の鉛蓄電池の寿命判定方法は、鉛蓄電池の内部イ
ンピーダンスを測定することにより寿命を判定する方法
において、整流器を介して浮動充電状態に接続された鉛
蓄電池の充電電流に含有されるリップル電流を、内部イ
ンピーダンス測定器の測定電流から減算し、前記内部イ
ンピーダンス測定器の測定電圧をこの差電流で除して内
部インピーダンスを算出し、この算出値により寿命を判
定することを特徴とするものである。Structure of the Invention The method for determining the lifespan of a lead-acid battery according to the present invention is a method for determining the lifespan by measuring the internal impedance of a lead-acid battery. The internal impedance is calculated by subtracting the ripple current measured by the internal impedance measuring device from the current measured by the internal impedance measuring device, and dividing the measured voltage of the internal impedance measuring device by this difference current, and the life is determined based on this calculated value. It is something to do.
寮施例
寮施例の説明に先立ち、新品と寿命品の鉛蓄電池を各５
個ずつ準備し、第２図のような開路状態にした場合と、
第５図のように商用電源１、整流器２、負荷４を接続し
て浮動充電状態にした場合とについて、それぞれの鉛蓄
電池３に交流定電圧源６−１と交流電流計６−２とから
なる内部インピーダンス測定器６を接続し、周波１１に
６０Ｈｚ、交流定電圧１ｍＶの測定電圧を印加して前記
交流電流計６−２で測定電流を読み取って内部インピー
ダンスを測定したところ、第１表のような結果が得られ
た。なお、浮動充電状態における測定は、測定電圧を印
加する前に充電電流に含有されるリップル電流を交流電
流計５で測定し・その後測定電流を流して交流電流計６
−２で測定電流を読み取り、さらに測定電流とりフグル
ミ流との差電流を計算して内部インピーダンスを測定し
たものを示した。ここで、鉛蓄電池の寿命品は新品のも
のを０．０２５ＯＡの過充電寿命試験に供したあとのも
のとした。Dormitory Example Prior to the explanation of the dormitory example, we will introduce 5 each of new and end-of-life lead-acid batteries.
When each is prepared one by one and put into an open state as shown in Figure 2,
As shown in Fig. 5, when a commercial power source 1, a rectifier 2, and a load 4 are connected to create a floating charging state, each lead-acid battery 3 is connected to an AC constant voltage source 6-1 and an AC ammeter 6-2. When the internal impedance was measured by connecting the internal impedance measuring device 6, applying a measuring voltage of 60 Hz and AC constant voltage of 1 mV to the frequency 11, and reading the measured current with the AC ammeter 6-2, the internal impedance was measured as shown in Table 1. The following results were obtained. Note that for measurement in the floating charging state, before applying the measurement voltage, measure the ripple current contained in the charging current with the AC ammeter 5, then apply the measurement current and measure the ripple current contained in the AC ammeter 6.
-2, the measured current was read, and the difference current between the measured current and the Fuglumi current was calculated, and the internal impedance was measured. Here, the end-of-life lead-acid battery was defined as a new battery that had been subjected to an overcharge life test at 0.025 OA.
以 下 余 白
第 １ 表
第１表から、開路状態における測定電流は、浮動充電状
態における測定電流とリップル電流との差電流にほぼ一
致していることがわかる。Table 1 From Table 1, it can be seen that the measured current in the open circuit state approximately corresponds to the difference current between the measured current in the floating charge state and the ripple current.
従って、測定電圧を差電流で除すと内部インピーダンス
を算出することができる。そして、開路状態であっても
、浮動充電状態であっても、新品のものは、算出された
内部インピーダンスが０．４３ｊＦｌΩ〜０．４６１Ｆ
ｌΩ、寿命品のものは、前記内部インピーダンスが１．
２８１１Ω〜１．３５＋１１Ωであることがわかる。こ
のことから、開路状態であっても、浮動充電状態であっ
ても、内部インピーダンスが１．２８１１Ω以上であれ
ば寿命と判定できることがわかる。Therefore, the internal impedance can be calculated by dividing the measured voltage by the difference current. And whether it is in an open circuit state or in a floating charging state, the calculated internal impedance of a new product is 0.43jFlΩ to 0.461F.
1Ω, and for long-life products, the internal impedance is 1.
It can be seen that it is 2811Ω to 1.35+11Ω. From this, it can be seen that whether the battery is in an open circuit state or in a floating charging state, if the internal impedance is 1.2811Ω or more, it can be determined that the battery life has expired.
なお、上記実験を他機種の密閉形鉛蓄電池や開放形鉛蓄
電池について行ったが、同様の結果が得られた。また、
上記実験における測定電圧や周波数は特に限定するもの
ではない。The above experiment was conducted on other types of sealed lead-acid batteries and open-type lead-acid batteries, and similar results were obtained. Also,
The measurement voltage and frequency in the above experiment are not particularly limited.
上記実験結果から、本発明は第１図のような回路によっ
て東男することができる。すなわち、第１図において、
商用電源１から整流器２を介して鉛蓄電池３を浮動充電
するシステムにおいて〜鉛蓄電池３の充電路に交流電流
計５を挿入し、この交流電流計５の測定値と内部インピ
ーダンス測定器６の交流電流計６−２の測定値とを減算
器７に入力して差電流を算出し、前記内部インピーダン
ス測定器６の測定電圧をこの差電流で除した値を内部イ
ンピーダンスとして表示するように構成すれば、浮動充
電状態における内部インピーダンスを正確に測定するこ
とができる。From the above experimental results, the present invention can be implemented using a circuit as shown in FIG. That is, in Figure 1,
In a system that float-charges a lead-acid battery 3 from a commercial power source 1 via a rectifier 2, an AC ammeter 5 is inserted into the charging path of the lead-acid battery 3, and the measured value of this AC ammeter 5 and the AC of an internal impedance measuring device 6 are A difference current is calculated by inputting the measured value of the ammeter 6-2 into a subtracter 7, and a value obtained by dividing the voltage measured by the internal impedance measuring device 6 by this difference current is displayed as the internal impedance. For example, internal impedance in a floating charging state can be accurately measured.
発明の効果
上記したとおりであるから、本発明は浮動充電状態で使
用される鉛蓄電池の寿命を的確に判断することができる
。Effects of the Invention As described above, the present invention can accurately determine the life span of a lead-acid battery used in a floating charging state.
第１図は本発明の鉛蓄電池の寿命判定方法を実現するた
めの回路図、第２図は鉛蓄電池の開路状態の接続図、第
３図は鉛蓄電池の浮動充電状態の接続図である。
１・・・商用電源 ２・・・整流器６・・・鉛蓄
電池 ４・・・負荷５・９．交流電流計 ６
・・・内部インピーダンス測定器７・・・減算器FIG. 1 is a circuit diagram for implementing the lead-acid battery life determination method of the present invention, FIG. 2 is a connection diagram of a lead-acid battery in an open circuit state, and FIG. 3 is a connection diagram of a lead-acid battery in a floating charging state. 1... Commercial power supply 2... Rectifier 6... Lead-acid battery 4... Load 5, 9. AC ammeter 6
...Internal impedance measuring device 7...Subtractor
Claims (1)
命を判定する方法において、整流器を介して浮動充電状
態に接続された鉛蓄電池の充電電流に含有されるリップ
ル電流を、内部インピーダンス測定器の測定電流から減
算し、前記内部インピーダンス測定器の測定電圧をこの
差電流で除して内部インピーダンスを算出し、この算出
値により寿命を判定することを特徴とする鉛蓄電池の寿
命判定方法。In a method for determining the life of a lead-acid battery by measuring its internal impedance, the ripple current contained in the charging current of a lead-acid battery connected to a floating state of charge via a rectifier is subtracted from the measured current of an internal impedance measuring device. A method for determining the lifespan of a lead-acid battery, characterized in that the internal impedance is calculated by dividing the voltage measured by the internal impedance measuring device by this difference current, and the lifespan is determined based on this calculated value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2077440A JPH03274479A (en) | 1990-03-26 | 1990-03-26 | Method of determining lifetime of lead storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2077440A JPH03274479A (en) | 1990-03-26 | 1990-03-26 | Method of determining lifetime of lead storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03274479A true JPH03274479A (en) | 1991-12-05 |
Family
ID=13634088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2077440A Pending JPH03274479A (en) | 1990-03-26 | 1990-03-26 | Method of determining lifetime of lead storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03274479A (en) |
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|---|---|---|---|---|
| WO1999023738A1 (en) * | 1997-11-03 | 1999-05-14 | Midtronics, Inc. | Method and apparatus for charging a battery |
| GB2352820A (en) * | 1999-08-03 | 2001-02-07 | Elliott Ind Ltd | Assessing the efficacy of battery cells in an uninterupptable power supply |
| JP2011117796A (en) * | 2009-12-02 | 2011-06-16 | Toyota Motor Corp | Abnormality detecting system for battery assembly |
| US8513949B2 (en) | 2000-03-27 | 2013-08-20 | Midtronics, Inc. | Electronic battery tester or charger with databus connection |
| US8872517B2 (en) | 1996-07-29 | 2014-10-28 | Midtronics, Inc. | Electronic battery tester with battery age input |
| US8872516B2 (en) | 2000-03-27 | 2014-10-28 | Midtronics, Inc. | Electronic battery tester mounted in a vehicle |
| US8958998B2 (en) | 1997-11-03 | 2015-02-17 | Midtronics, Inc. | Electronic battery tester with network communication |
| US8963550B2 (en) | 2004-08-20 | 2015-02-24 | Midtronics, Inc. | System for automatically gathering battery information |
| US9018958B2 (en) | 2003-09-05 | 2015-04-28 | Midtronics, Inc. | Method and apparatus for measuring a parameter of a vehicle electrical system |
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| US9496720B2 (en) | 2004-08-20 | 2016-11-15 | Midtronics, Inc. | System for automatically gathering battery information |
| US9588185B2 (en) | 2010-02-25 | 2017-03-07 | Keith S. Champlin | Method and apparatus for detecting cell deterioration in an electrochemical cell or battery |
| US9851411B2 (en) | 2012-06-28 | 2017-12-26 | Keith S. Champlin | Suppressing HF cable oscillations during dynamic measurements of cells and batteries |
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| WO2022270104A1 (en) * | 2021-06-25 | 2022-12-29 | 日置電機株式会社 | Impedance measurement device and impedance measurement method |
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-
1990
- 1990-03-26 JP JP2077440A patent/JPH03274479A/en active Pending
Cited By (47)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8872517B2 (en) | 1996-07-29 | 2014-10-28 | Midtronics, Inc. | Electronic battery tester with battery age input |
| WO1999023738A1 (en) * | 1997-11-03 | 1999-05-14 | Midtronics, Inc. | Method and apparatus for charging a battery |
| US8958998B2 (en) | 1997-11-03 | 2015-02-17 | Midtronics, Inc. | Electronic battery tester with network communication |
| GB2352820A (en) * | 1999-08-03 | 2001-02-07 | Elliott Ind Ltd | Assessing the efficacy of battery cells in an uninterupptable power supply |
| US6765388B1 (en) | 1999-08-03 | 2004-07-20 | Elliott Industries Limited | Assessing a parameter of cells in the batteries of uninterruptable power supplies |
| GB2352820B (en) * | 1999-08-03 | 2003-09-17 | Elliott Ind Ltd | Assessing a parameter of cells in the batteries of uninterruptable power supplies |
| US9052366B2 (en) | 2000-03-27 | 2015-06-09 | Midtronics, Inc. | Battery testers with secondary functionality |
| US8513949B2 (en) | 2000-03-27 | 2013-08-20 | Midtronics, Inc. | Electronic battery tester or charger with databus connection |
| US8872516B2 (en) | 2000-03-27 | 2014-10-28 | Midtronics, Inc. | Electronic battery tester mounted in a vehicle |
| US9018958B2 (en) | 2003-09-05 | 2015-04-28 | Midtronics, Inc. | Method and apparatus for measuring a parameter of a vehicle electrical system |
| US9255955B2 (en) | 2003-09-05 | 2016-02-09 | Midtronics, Inc. | Method and apparatus for measuring a parameter of a vehicle electrical system |
| US8963550B2 (en) | 2004-08-20 | 2015-02-24 | Midtronics, Inc. | System for automatically gathering battery information |
| US9496720B2 (en) | 2004-08-20 | 2016-11-15 | Midtronics, Inc. | System for automatically gathering battery information |
| US9274157B2 (en) | 2007-07-17 | 2016-03-01 | Midtronics, Inc. | Battery tester for electric vehicle |
| US9335362B2 (en) | 2007-07-17 | 2016-05-10 | Midtronics, Inc. | Battery tester for electric vehicle |
| JP2011117796A (en) * | 2009-12-02 | 2011-06-16 | Toyota Motor Corp | Abnormality detecting system for battery assembly |
| US9588185B2 (en) | 2010-02-25 | 2017-03-07 | Keith S. Champlin | Method and apparatus for detecting cell deterioration in an electrochemical cell or battery |
| US9425487B2 (en) | 2010-03-03 | 2016-08-23 | Midtronics, Inc. | Monitor for front terminal batteries |
| US9229062B2 (en) | 2010-05-27 | 2016-01-05 | Midtronics, Inc. | Electronic storage battery diagnostic system |
| US11650259B2 (en) | 2010-06-03 | 2023-05-16 | Midtronics, Inc. | Battery pack maintenance for electric vehicle |
| US11740294B2 (en) | 2010-06-03 | 2023-08-29 | Midtronics, Inc. | High use battery pack maintenance |
| US9419311B2 (en) | 2010-06-18 | 2016-08-16 | Midtronics, Inc. | Battery maintenance device with thermal buffer |
| US9201120B2 (en) | 2010-08-12 | 2015-12-01 | Midtronics, Inc. | Electronic battery tester for testing storage battery |
| US10429449B2 (en) | 2011-11-10 | 2019-10-01 | Midtronics, Inc. | Battery pack tester |
| US9851411B2 (en) | 2012-06-28 | 2017-12-26 | Keith S. Champlin | Suppressing HF cable oscillations during dynamic measurements of cells and batteries |
| US10046649B2 (en) | 2012-06-28 | 2018-08-14 | Midtronics, Inc. | Hybrid and electric vehicle battery pack maintenance device |
| US11325479B2 (en) | 2012-06-28 | 2022-05-10 | Midtronics, Inc. | Hybrid and electric vehicle battery maintenance device |
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| US10473555B2 (en) | 2014-07-14 | 2019-11-12 | Midtronics, Inc. | Automotive maintenance system |
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| US11054480B2 (en) | 2016-10-25 | 2021-07-06 | Midtronics, Inc. | Electrical load for electronic battery tester and electronic battery tester including such electrical load |
| US11513160B2 (en) | 2018-11-29 | 2022-11-29 | Midtronics, Inc. | Vehicle battery maintenance device |
| US11566972B2 (en) | 2019-07-31 | 2023-01-31 | Midtronics, Inc. | Tire tread gauge using visual indicator |
| US11545839B2 (en) | 2019-11-05 | 2023-01-03 | Midtronics, Inc. | System for charging a series of connected batteries |
| US11668779B2 (en) | 2019-11-11 | 2023-06-06 | Midtronics, Inc. | Hybrid and electric vehicle battery pack maintenance device |
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| US11973202B2 (en) | 2019-12-31 | 2024-04-30 | Midtronics, Inc. | Intelligent module interface for battery maintenance device |
| US11486930B2 (en) | 2020-01-23 | 2022-11-01 | Midtronics, Inc. | Electronic battery tester with battery clamp storage holsters |
| WO2022270104A1 (en) * | 2021-06-25 | 2022-12-29 | 日置電機株式会社 | Impedance measurement device and impedance measurement method |
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