JP2999405B2 - Battery deterioration judgment method - Google Patents
Battery deterioration judgment methodInfo
- Publication number
- JP2999405B2 JP2999405B2 JP7314775A JP31477595A JP2999405B2 JP 2999405 B2 JP2999405 B2 JP 2999405B2 JP 7314775 A JP7314775 A JP 7314775A JP 31477595 A JP31477595 A JP 31477595A JP 2999405 B2 JP2999405 B2 JP 2999405B2
- Authority
- JP
- Japan
- Prior art keywords
- storage battery
- internal impedance
- maximum value
- deterioration
- test
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Secondary Cells (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は密閉形蓄電池の劣化
判定方法に関する。The present invention relates to a method for judging deterioration of a sealed storage battery.
【０００２】[0002]
【従来の技術】近年、密閉形蓄電池が広範囲に使用され
るようになってきているが、その劣化状態を判定する場
合、電解液の比重の測定ができないため、一般的に特定
の周波数の交流電流を開回路の蓄電池に印加して、その
内部インピーダンスの変化から蓄電池の劣化状態を判定
していた。2. Description of the Related Art In recent years, sealed storage batteries have been widely used. However, when determining the deterioration state, the specific gravity of an electrolyte cannot be measured. A current is applied to the open-circuit storage battery, and the deterioration state of the storage battery is determined from the change in the internal impedance.
【０００３】[0003]
【発明が解決しようとする課題】上述した従来の蓄電池
の劣化判定方法によれば、適切な周波数領域の交流を用
いても開回路での蓄電池の内部インピーダンスは非常に
小さく、蓄電池の劣化による内部インピーダンスの変化
による差が出にくいため、正確に蓄電池の劣化状態を把
握することが困難であった。本発明は、従来方法の課題
を解決する蓄電池の劣化判定方法を提供することをその
目的とするものである。According to the above-described conventional method for determining the deterioration of a storage battery, the internal impedance of the storage battery in an open circuit is very small even when an alternating current in an appropriate frequency range is used. Since it is difficult to make a difference due to a change in impedance, it is difficult to accurately grasp the state of deterioration of the storage battery. An object of the present invention is to provide a method for determining deterioration of a storage battery that solves the problems of the conventional method.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記の目的を
達成するために、請求項１及び２に記載のように、放電
中の供試蓄電池の内部インピーダンスを測定し、放電終
止電圧直前の急激な立ち上がりを示す該内部インピーダ
ンスの最大値が、良品蓄電池の放電終止電圧直前の急激
な立ち上がりを示す内部インピーダンスの最大値より大
きいことから又、放電終止電圧直前の急激な立ち上がり
を示す該内部インピーダンスの最大値に達する時間が、
良品蓄電池の放電終止電圧直前の急激な立ち上がりを示
す内部インピーダンスの最大値に達する時間より短いこ
とから供試蓄電池の劣化を判定することを特徴とする。
又、請求項３及び４に記載のように、充電中の供試蓄電
池の内部インピーダンスを測定し、該内部インピーダン
スの最大値が良品蓄電池の内部インピーダンスの最大値
より大きいことから又、該内部インピーダンスの最大値
に達する時間が良品蓄電池の内部インピーダンスの極大
値に達する時間より短いことから供試蓄電池の劣化を判
定することを特徴とする。In order to achieve the above object, the present invention measures the internal impedance of a test storage battery during discharging and measures the impedance immediately before the discharge end voltage. sharp maximum value of the internal impedance indicating the rise, suddenly a discharge end voltage immediately before the defective storage battery
Also, since the internal impedance indicating a rapid rise is greater than the maximum value of the internal impedance indicating a rapid rise immediately before the discharge end voltage ,
A sharp rise immediately before the discharge end voltage of a good storage battery
And judging the deterioration of the test試蓄batteries shorter than the time to reach the maximum value of to internal impedance.
In addition, the internal impedance of the test storage battery during charging is measured, and the maximum value of the internal impedance is larger than the maximum value of the internal impedance of the non-defective storage battery. Since the time to reach the maximum value is shorter than the time to reach the maximum value of the internal impedance of the non-defective storage battery, the deterioration of the test storage battery is determined.
【０００５】[0005]
【作用】請求項１及び２に記載の発明について。放電中
の蓄電池の内部インピーダンスは、その原因は明確でな
いが、図１に示すように、放電終止電圧直前において急
激に上昇する。この上昇時の内部インピーダンスの最大
値は、劣化蓄電池においては、図２に示すように、図１
に示された良品蓄電池よりも大きいことに着目し、これ
により供試蓄電池の劣化を判定する。又、この最大値に
達する時間が、劣化蓄電池においては、良品蓄電池より
も短いことに着目してこれにより供試蓄電池の劣化を判
定する。請求項３及び４に記載の発明について。充電中
の蓄電池の内部インピーダンスは、定電流充電を行な
い、水の電解によりガスが発生し始め、図３に示すよう
に、電池電圧（破線）が急激に上昇するところで蓄電池
の内部インピーダンス（実線）が急激な立ち上がりを示
した。この内部インピーダンスの急激な立ち上がりの極
大値は、図４に示すように、劣化蓄電池においては、図
３に示された良品蓄電池よりも大きいことに着目して、
これにより供試蓄電池の劣化を判定する。又、この極大
値に達する時間が、劣化蓄電池においては、良品蓄電池
よりも短いことに着目し、これにより供試蓄電池の劣化
を判定する。The invention according to claims 1 and 2 is described. Although the cause of the internal impedance of the storage battery during discharging is not clear, as shown in FIG. 1, the internal impedance sharply rises immediately before the discharge end voltage. As shown in FIG. 2, the maximum value of the internal impedance at the time of the rise is as shown in FIG.
It is noted that the storage battery is larger than the non-defective storage battery shown in FIG. Also, paying attention to the fact that the time to reach the maximum value is shorter in the deteriorated storage battery than in the non-defective storage battery, thereby determining the deterioration of the test storage battery. The invention according to claims 3 and 4. The internal impedance of the storage battery during charging is constant current charging, gas is generated by electrolysis of water, and as shown in FIG. 3, the internal impedance of the storage battery (solid line) where the battery voltage (dashed line) rises sharply. Showed a sharp rise. Focusing on the fact that the maximum value of the sudden rise of the internal impedance is larger in the deteriorated storage battery than in the non-defective storage battery shown in FIG. 3, as shown in FIG.
Thus, the deterioration of the test storage battery is determined. In addition, attention is paid to the fact that the time required to reach the maximum value is shorter in a deteriorated storage battery than in a non-defective storage battery, and thereby the deterioration of the test storage battery is determined.
【０００６】[0006]
【発明の実施の形態】以下に本発明の実施例を図面を参
照して説明する。 （請求項１及び２記載の発明の実施例） 定格容量８０Ａｈ，１２Ｖの密閉形鉛蓄電池の良品蓄電
池１を、図５に示すように、負荷２に接続して０．３３
ＣＡで９．９Ｖまで放電し、該良品蓄電池１の端子に接
続したインピーダンス測定器（八千代電子株式会社製）
３により放電中の良品蓄電池１に１７．５Ｈｚ，０．１
Ａの交流電流を流し、交流電流による良品蓄電池におけ
る電圧降下と交流電流とから放電終止電圧直前に急激な
立ち上がりを示す内部インピーダンスの最大値を測定し
た。尚、同図において、４はインピーダンス測定器３の
出力端子に接続された記録計、５は直流電圧計、６は交
流電流を阻止するチョーク・コイルである。又、同種の
蓄電池で劣化状態の異なる２個の劣化蓄電池１′につい
て良品蓄電池と同一条件で図５に示す回路で試験を行な
った。Embodiments of the present invention will be described below with reference to the drawings. (Embodiments of Claims 1 and 2) As shown in FIG. 5, a non-defective storage battery 1 of a sealed type lead-acid battery having a rated capacity of 80 Ah and 12 V is connected to a load 2 as shown in FIG.
Discharged to 9.9 V by CA and connected to the terminal of the non-defective storage battery 1 (impedance meter (Yachiyo Electronics Co., Ltd.))
3 to 17.5 Hz, 0.1
The AC current of A was passed, and the maximum value of the internal impedance showing a sharp rise immediately before the discharge end voltage was measured from the voltage drop and the AC current in the non-defective storage battery due to the AC current. In the figure, 4 is a recorder connected to the output terminal of the impedance measuring device 3, 5 is a DC voltmeter, and 6 is a choke coil for blocking AC current. In addition, two deteriorated storage batteries 1 'of the same type but having different deterioration states were tested with the circuit shown in FIG. 5 under the same conditions as the non-defective storage battery.
【０００７】[0007]
【表１】 [Table 1]
【０００８】表１及び図６から明らかなように、蓄電池
の劣化の度合いに伴って放電終止電圧の直前に急激な立
ち上がりを示す内部インピーダンスの最大値は変化し、
この値は、放電容量と相関関係が見られるため、蓄電池
の内部インピーダンスの最大値を標準蓄電池又は良品蓄
電池の内部インピーダンスの最大値と比較することによ
り蓄電池の劣化度合いを検出することができる。次い
で、前記試験条件で、放電開始から内部インピーダンス
が最大値に達するまでの時間を前記良品蓄電池及び劣化
蓄電池について測定した。As is apparent from Table 1 and FIG. 6, the maximum value of the internal impedance showing a sharp rise immediately before the discharge end voltage changes with the degree of deterioration of the storage battery.
Since this value has a correlation with the discharge capacity, the degree of deterioration of the storage battery can be detected by comparing the maximum value of the internal impedance of the storage battery with the maximum value of the internal impedance of the standard storage battery or the non-defective storage battery. Next, under the test conditions, the time from the start of discharge to the time when the internal impedance reached the maximum value was measured for the non-defective storage battery and the deteriorated storage battery.
【０００９】[0009]
【表２】 [Table 2]
【００１０】表２及び図７に示すように、良品蓄電池と
劣化蓄電池とでは時間に差が出ており、劣化蓄電池は良
品蓄電池より短い。したがって、供試蓄電池の時間を良
品蓄電池と比較することにより、供試蓄電池の劣化状態
を検出することができる。 （請求項３及び４記載の発明の実施例） 定格容量８０Ａｈ，１２Ｖの密閉形鉛蓄電池の蓄電池１
を、図５に示すように、負荷２に接続して０．３３ＣＡ
で９．９Ｖまで放電し、２時間静置した後、図８に示す
ように、直流電源７により放電容量の１２０％を１５Ａ
の定電流で充電を行ない、蓄電池電圧の立上がり付近に
見られる内部インピーダンスの極大値を、インピーダン
ス測定器３により充電中の良品蓄電池１に１７．５Ｈ
ｚ，０．１Ａの交流電流を流して測定した。又、同種の
蓄電池で劣化状態の異なる２個の蓄電池１′、１′につ
いて蓄電池１と同一条件で図５及び図８に示す回路で試
験を行った。As shown in Table 2 and FIG. 7, there is a time difference between the good storage battery and the deteriorated storage battery, and the deteriorated storage battery is shorter than the good storage battery. Therefore, the deterioration state of the test storage battery can be detected by comparing the time of the test storage battery with that of the non-defective storage battery. (Embodiments of the invention according to claims 3 and 4) A storage battery 1 of a sealed lead storage battery having a rated capacity of 80 Ah and 12 V
Is connected to the load 2 as shown in FIG.
, And allowed to stand for 2 hours. Then, as shown in FIG.
The maximum value of the internal impedance seen near the rise of the storage battery voltage is determined by the impedance measuring device 3 to be 17.5H for the non-defective storage battery 1 being charged.
The measurement was carried out by passing an alternating current of z, 0.1 A. In addition, two storage batteries 1 ', 1' of the same type but having different states of deterioration were tested with the circuits shown in FIGS.
【００１１】[0011]
【表３】 [Table 3]
【００１２】表３及び図９から明らかなように、蓄電池
の劣化の度合いに伴って電池電圧の立上がり付近に見ら
れる内部インピーダンスの極大値が変化し、この値は放
電容量の減少と共に増加し、放電容量と相関関係が見ら
れるため、供試蓄電池の内部インピーダンスの極大値を
標準蓄電池又は良品蓄電池の極大値と比較することによ
り蓄電池の劣化の度合いを判定することができる。この
実施例の場合、蓄電池の寿命を定格容量の８０％の６４
Ａｈとすれば、図９から内部インピーダンスの極大値１
６．５ｍΩ以上の蓄電池は実質定格容量８０％以下であ
り、寿命蓄電池と判定することができる。この実施例で
は、定電流充電により充電したが、内部インピーダンス
の極大値は充電容量が放電容量の９０％前後で現れるた
め、定電圧充電を行なう場合でも、充電容量が９０％付
近で定電流充電に変わるようにすれば、内部インピーダ
ンスの極大値の検出が可能である。次いで、前記試験条
件で、充電開始から内部インピーダンスが極大値に達す
るまでの時間を前記供試電池について測定した。[0012] As is clear from Table 3 and Figure 9, the pole large value of the internal impedance changes observed around the rise of battery voltage with the degree of deterioration of the storage battery, this value increases with the decrease in the discharge capacity since the correlation between the discharge capacity is observed, it is possible to determine the degree of battery deterioration by comparing the pole large value the maximum value of the standard battery or defective storage battery internal impedance of the test試蓄battery. In this embodiment, the life of the storage battery is reduced to 64% of 80% of the rated capacity.
If Ah, pole of the internal impedance from 9 Daine 1
A storage battery of 6.5 mΩ or more has a practically rated capacity of 80% or less, and can be determined as a life storage battery. In this embodiment, charging was performed by constant current charging. However, since the maximum value of the internal impedance appears around 90% of the discharging capacity, even when constant voltage charging is performed, constant current charging occurs when the charging capacity is around 90%. , It is possible to detect the local maximum value of the internal impedance. Next, under the test conditions, the time from the start of charging to the time when the internal impedance reached the maximum value was measured for the test battery.
【００１３】[0013]
【表４】 [Table 4]
【００１４】表４及び図１０から明らかなように、蓄電
池の劣化状態により内部インピーダンスが極大値に達す
るまでの時間に差が出ており、劣化蓄電池は良品蓄電池
より短い。したがって、供試蓄電池の時間を良品蓄電池
と比較することにより、供試蓄電池の劣化状態を検出す
ることができる。As is apparent from Table 4 and FIG. 10, there is a difference in the time until the internal impedance reaches the maximum value depending on the state of deterioration of the storage battery, and the deteriorated storage battery is shorter than the non-defective storage battery. Therefore, the deterioration state of the test storage battery can be detected by comparing the time of the test storage battery with that of the non-defective storage battery.
【００１５】[0015]
【発明の効果】本発明は、上述の構成によるときは、正
確に蓄電池の劣化状態を把握することができるという効
果を有する。According to the present invention, the above configuration has an effect that the state of deterioration of the storage battery can be accurately grasped.
【図１】蓄電池（良品）の放電時間−電池電圧及び内部
インピーダンス特性図。FIG. 1 is a graph showing discharge time versus battery voltage and internal impedance characteristics of a storage battery (good product).
【図２】劣化蓄電池の放電時間−電池電圧及び内部イン
ピーダンス特性図。FIG. 2 is a graph showing discharge time-battery voltage and internal impedance characteristics of a deteriorated storage battery.
【図３】蓄電池（良品）の充電時間−電池電圧及び内部
インピーダンス特性図。FIG. 3 is a graph showing charging time-battery voltage and internal impedance characteristics of a storage battery (good product).
【図４】劣化蓄電池の充電時間−電池電圧及び内部イン
ピーダンス特性図。FIG. 4 is a graph showing a relationship between a charging time of a deteriorated storage battery, a battery voltage, and an internal impedance.
【図５】請求項１及び２記載の発明を実施するためのブ
ロック図。FIG. 5 is a block diagram for implementing the invention according to claims 1 and 2;
【図６】放電容量と蓄電池の内部インピーダンスとの関
係を示す特性図。FIG. 6 is a characteristic diagram showing a relationship between a discharge capacity and an internal impedance of a storage battery.
【図７】放電容量と内部インピーダンスの最大値が現れ
るまでの時間との関係を示す特性図。[7] characteristic diagram showing the relationship between time to maximum value appears in the discharge capacity and internal impedance.
【図８】請求項３及び４記載の発明を実施するためのブ
ロック図。FIG. 8 is a block diagram for implementing the invention according to claims 3 and 4;
【図９】放電容量と蓄電池の内部インピーダンスとの関
係を示す特性図。FIG. 9 is a characteristic diagram showing a relationship between a discharge capacity and an internal impedance of a storage battery.
【図１０】放電容量と内部インピーダンスの極大値が現
れるまでの時間との関係を示す特性図。FIG. 10 is a characteristic diagram showing a relationship between a discharge capacity and a time until a maximum value of an internal impedance appears.
１ 良品蓄電池 １′ 供試蓄電
池 ２ 負荷 ３ インピーダ
ンス測定器 ４ 記録計 ５ 直流電圧計 ７ 直流電源DESCRIPTION OF SYMBOLS 1 Non-defective storage battery 1 'Test storage battery 2 Load 3 Impedance measuring instrument 4 Recorder 5 DC voltmeter 7 DC power supply
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭59−48661（ＪＰ，Ａ) 特開 昭63−157080（ＪＰ，Ａ) 特開 平２−250275（ＪＰ，Ａ) 特開 平４−104481（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 10/42 - 10/48 G01R 31/36 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-59-48661 (JP, A) JP-A-63-157080 (JP, A) JP-A-2-250275 (JP, A) JP-A-4- 104481 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) H01M 10/42-10/48 G01R 31/36
Claims (4)
スを測定し、放電終止電圧直前の該内部インピーダンス
の急激な立ち上がりにおける最大値が、良品蓄電池の放
電終止電圧直前の内部インピーダンスの急激な立ち上が
りにおける最大値より大きいことから供試蓄電池の劣化
を判定することを特徴とする蓄電池の劣化判定方法。1. A measuring the internal impedance of the test試蓄battery during discharge, the maximum value in the rapid rise of the internal impedance of the discharge end voltage immediately before, release of the non-defective battery
The sudden rise of the internal impedance just before the
Deterioration determination method of the storage battery, characterized by determining the degradation of the test試蓄batteries greater than the maximum value definitive in Ri.
スを測定し、放電終止電圧直前の該内部インピーダンス
の急激な立ち上がりにおける最大値に達する時間が、良
品蓄電池の放電終止電圧直前の内部インピーダンスの急
激な立ち上がりにおける最大値に達する時間より短いこ
とから供試蓄電池の劣化を判定することを特徴とする蓄
電池の劣化判定方法。2. A measuring the internal impedance of the test試蓄battery during discharge, time to reach maximum value in the rapid rise of the internal impedance of the discharge end voltage immediately before, rapid internal impedance of the discharge end voltage immediately before the defective battery
A method for judging the deterioration of a storage battery, wherein the deterioration of the test storage battery is judged from a time shorter than a time when the maximum value is reached at a sharp rise .
スを測定し、該内部インピーダンスの極大値が良品蓄電
池の内部インピーダンスの極大値より大きいことから供
試蓄電池の劣化を判定することを特徴とする蓄電池の劣
化判定方法。3. The method according to claim 1, further comprising measuring an internal impedance of the test storage battery during charging, and judging deterioration of the test storage battery from the fact that the maximum value of the internal impedance is larger than the maximum value of the internal impedance of the good storage battery. A method for determining deterioration of a storage battery.
スを測定し、該内部インピーダンスの極大値に達する時
間が良品蓄電池の内部インピーダンスの極大値に達する
時間より短いことから供試蓄電池の劣化を判定すること
を特徴とする蓄電池の劣化判定方法。4. A method of measuring the internal impedance of the storage battery during charging, and determining the deterioration of the storage battery because the time to reach the maximum value of the internal impedance is shorter than the time to reach the maximum value of the internal impedance of the good storage battery. A method for determining the deterioration of a storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7314775A JP2999405B2 (en) | 1995-11-08 | 1995-11-08 | Battery deterioration judgment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7314775A JP2999405B2 (en) | 1995-11-08 | 1995-11-08 | Battery deterioration judgment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09134742A JPH09134742A (en) | 1997-05-20 |
| JP2999405B2 true JP2999405B2 (en) | 2000-01-17 |
Family
ID=18057448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7314775A Expired - Fee Related JP2999405B2 (en) | 1995-11-08 | 1995-11-08 | Battery deterioration judgment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2999405B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3669673B2 (en) * | 1999-06-18 | 2005-07-13 | 松下電器産業株式会社 | Electrochemical element degradation detection method, remaining capacity detection method, and charger and discharge control device using the same |
| TW535308B (en) | 2000-05-23 | 2003-06-01 | Canon Kk | Detecting method for detecting internal state of a rechargeable battery, detecting device for practicing said detecting method, and instrument provided with said |
| DE60238371D1 (en) | 2001-05-29 | 2011-01-05 | Canon Kk | Method, device and program for acquiring internal information of a rechargeable battery and device containing this detection device |
| US7190171B2 (en) | 2002-10-11 | 2007-03-13 | Canon Kabushiki Kaisha | Detecting method and detecting apparatus for detecting internal of rechargeable battery, rechargeable battery pack having said detecting apparatus therein, apparatus having said detecting apparatus therein, program in which said detecting method is incorporated, and medium in which said program is stored |
| JP4954791B2 (en) * | 2007-05-24 | 2012-06-20 | 株式会社Ｋｒｉ | Voltage prediction method for power storage devices |
| JP6186227B2 (en) * | 2013-09-26 | 2017-08-23 | 古河電池株式会社 | Battery monitoring device |
| CN105652215A (en) * | 2016-04-07 | 2016-06-08 | 苏州协鑫集成科技工业应用研究院有限公司 | Method and device for detecting SOH (state of health) of battery |
-
1995
- 1995-11-08 JP JP7314775A patent/JP2999405B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09134742A (en) | 1997-05-20 |
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