JP2001266956A - Delivery test method of battery - Google Patents
Delivery test method of batteryInfo
- Publication number
- JP2001266956A JP2001266956A JP2000076067A JP2000076067A JP2001266956A JP 2001266956 A JP2001266956 A JP 2001266956A JP 2000076067 A JP2000076067 A JP 2000076067A JP 2000076067 A JP2000076067 A JP 2000076067A JP 2001266956 A JP2001266956 A JP 2001266956A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- value
- characteristic value
- information
- electrical characteristic
- 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.)
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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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電池の検査と選別に
関し、特に各電池の電気特性値の検査により迅速で正確
に分ける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 battery inspection and sorting, and more particularly to a method for quickly and accurately separating batteries by inspecting electrical characteristic values of the batteries.
【０００２】[0002]
【従来の技術】電池の生産後における検査方法は、一般
的に所定のエージング期間（保存期間）を経た後、電気
特性値を測定して検査される。この場合の電気特性は、
開回路電圧や閉回路電圧または内部抵抗などを示してい
る。このため、従来の検査方法は、前記電気特性をエー
ジング期間後に各電池すべてを測定し、その値分布から
平均値や統計的手法を用いたバラツキ（シグマ値）を計
算し、前記の電気特性値分布から外れている電池を選別
する方法をとっている。2. Description of the Related Art In general, an inspection method after production of a battery is performed by measuring an electrical characteristic value after a predetermined aging period (storage period). The electrical characteristics in this case are
It indicates an open circuit voltage, a closed circuit voltage, an internal resistance, or the like. For this reason, the conventional inspection method measures the electric characteristics of all the batteries after the aging period, calculates an average value or a variation (sigma value) using a statistical method from the value distribution, and calculates the electric characteristic value. It uses a method of selecting batteries that are out of distribution.
【０００３】一般的に、この電気特性値分布を決定する
ためには統計的な抜き取り手法を用いて、一定の母数か
ら抜き取る電池数量を決定し、さらに統計的手法を用い
その電気的特性値の分布バラツキを計算している。した
がって出荷する電池の中に不具合品の混在を避けるため
には、良品の電気特性値分布から不具合電池の電気特性
値分布がはずれる必要がある。すなわちエージング期間
は良品分布と不良品分布の差を大きくするために、長く
期間を置く必要がある。Generally, in order to determine the electric characteristic value distribution, a statistical sampling method is used to determine the number of batteries to be extracted from a certain parameter, and the electric characteristic value is determined using a statistical method. Is calculated. Therefore, in order to avoid the mixture of defective products in the batteries to be shipped, it is necessary that the electrical characteristic value distribution of the defective battery deviates from the electrical characteristic value distribution of good products. In other words, it is necessary to set a long aging period in order to increase the difference between the non-defective product distribution and the defective product distribution.
【０００４】また、統計的に計算されたシグマ値より計
算された上下限値設定の絶対値を小さくすることで出荷
する電池の中に不具合品の混在率が減少する事になる。In addition, by reducing the absolute value of the upper and lower limit values calculated from the statistically calculated sigma value, the mixed rate of defective batteries in the batteries to be shipped is reduced.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記従
来の方法では、統計的に合理性を十分持っているが、生
産ロットの大きさやロット間バラツキ等から検査を行う
と、不具合品を出荷しないためには、選別検査基準を厳
しくするため、選別して廃棄される電池中に多くの良品
電池が混在することになる。However, the above-mentioned conventional method has sufficient statistical rationality. However, if inspection is performed based on the size of production lots or variations between lots, defective products will not be shipped. In order to make the sorting inspection criteria stricter, many non-defective batteries are mixed in batteries that are sorted and discarded.
【０００６】また、エージング期間を短期間にすると電
気特性値が値分布の所定外に出ないためエージング期間
を長期間必要とする。したがって現在行っている方法
は、電池の廃棄品の中の良品を減らす点またエージング
期間を短縮する点からみても改良の余地がある。Further, if the aging period is short, the aging period is required for a long time because the electric characteristic value does not fall outside the predetermined value distribution. Therefore, there is still room for improvement in the current method in terms of reducing non-defective products in battery waste and shortening the aging period.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
に本発明は、各電池のロット検査方法において、各電池
が組み立てられ完成された後にまず電気特性の初期値が
測定され、電池には機械的または電気的に読み取り可能
なロット表示が連番にて電池上に表示される。According to the present invention, there is provided a method for inspecting the lot of each battery, wherein an initial value of an electrical characteristic is measured after each battery is assembled and completed. Lot indications that can be read mechanically or electrically are displayed on the battery in serial numbers.
【０００８】したがって各電池は、生産日のロット情報
を持つ事になる。このステップ後にすぐに第１回目の選
別が行われる。この選別は製造時の電気特性値が所定の
許容範囲外の電池を廃棄するために行われる。Therefore, each battery has lot information on the production date. Immediately after this step, the first sorting is performed. This sorting is performed in order to discard batteries whose electric characteristic values during manufacture are out of a predetermined allowable range.
【０００９】この第１回目の選別が行われた各電池は、
所定のエージング期間に置かれた後、第２回目の電気特
性値の測定を行なう。この第２回目の検査値とすでに測
定されている第１回目の検査値を比較し、第２回目の電
気特性値の絶対値や第１回目から第２回目の電池特性値
差やその減衰率や増加率を計算される。その後各電池は
第１回目や第２回目の絶対値や第１回目から第２回目の
電池特性値差やその減衰率や増加率を基本値として所定
の選別を行うものである。[0009] Each battery subjected to the first sorting is
After a predetermined aging period, a second measurement of the electrical characteristic value is performed. The second inspection value is compared with the already measured first inspection value, and the absolute value of the second electrical characteristic value, the difference between the first and second battery characteristic values and the decay rate thereof are obtained. And the rate of increase is calculated. Thereafter, each battery performs a predetermined selection based on the first and second absolute values, the first to second battery characteristic value differences, and the decay rate and increase rate thereof as basic values.
【００１０】[0010]
【発明の実施の形態】本発明の請求項１に記載の発明
は、電池を出荷する前に記憶部と演算部を備えたコンピ
ュータを利用して選別する方法であって、（ａ）前記電
池の情報を電池ケース上に表示する工程と、（ｂ）前記
電池の情報を読取装置によって読み取る工程と、（ｃ）
前記電池の電気特性値を測定装置によって測定し、第１
の電気特性値を求める工程と、（ｄ）前記電池の情報と
前記第１の電気特性値とを前記測定時刻とともに前記コ
ンピュータの記憶装置に記憶させる工程と、（ｅ）前記
（ａ），（ｂ），（ｃ），（ｄ）の工程が完了後、前記
電池を所定時間放置するエージング工程と、（ｆ）前記
（ｅ）の工程の完了後、前記電池の情報を読取装置によ
って読み取る工程と、（ｇ）前記電池の電気特性値を測
定装置によって測定し、第２の電気特性値を求める工程
と、（ｈ）前記電池の情報と前記第２の電気特性値とを
前記測定時刻とともに前記コンピュータの記憶装置に記
憶させる工程と、（ｉ）前記コンピュータの演算部で、
前記所定時間に応じて前記第１の電気特性値と第２の電
気特性値との差または測定時間の差の関数として、前記
電池の電気特性値の減衰率または増加率を計算する工程
と、（ｊ）前記（ｉ）の工程で計算された減衰率や増加
率に基づき、前記電池を選別検査する工程と、を有する
電池出荷検査方法としたものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a method for selecting a battery using a computer having a storage unit and an operation unit before shipping the battery, wherein (a) the battery Displaying the information of the battery on a battery case; (b) reading the information of the battery by a reading device; and (c).
The electric characteristic value of the battery is measured by a measuring device, and the first
(D) storing information of the battery and the first electrical characteristic value together with the measurement time in a storage device of the computer; and (e) storing (a) and (b). b) an aging step in which the battery is left for a predetermined time after completion of the steps (c) and (d); and (f) a step of reading information on the battery by a reading device after the completion of the step (e). (G) measuring an electric characteristic value of the battery with a measuring device to obtain a second electric characteristic value; and (h) calculating information of the battery and the second electric characteristic value together with the measurement time. A step of storing the information in a storage device of the computer; and (i) an operation unit of the computer,
Calculating a decay rate or an increase rate of the electrical property value of the battery as a function of a difference between the first electrical property value and the second electrical property value or a difference in measurement time according to the predetermined time; (J) a method for inspecting the battery shipment based on the attenuation rate and the increase rate calculated in the step (i).
【００１１】例えば、この第１回目の選別が行われた各
電池は、所定のエージング期間に置かれた後、第２回目
の電気特性値の測定を行なう。この第２回目の検査値と
すでに測定されている第１回目の検査値を比較し、第２
回目の電気特性値の絶対値や第１回目から第２回目の電
池特性値差やその減衰率や増加率を計算される。その
後、各電池は第１回目や第２回目の絶対値や第１回目か
ら第２回目の電池特性値差やその減衰率や増加率を基本
値として所定の選別を行う。For example, each battery subjected to the first sorting is subjected to a predetermined aging period and then subjected to a second measurement of the electric characteristic value. The second inspection value is compared with the already measured first inspection value, and the second inspection value is compared with the second inspection value.
The absolute value of the electric characteristic value of the second time, the difference of the battery characteristic value from the first time to the second time, and the decay rate and increase rate thereof are calculated. After that, each battery performs a predetermined selection based on the first and second absolute values, the first and second battery characteristic value differences, and the decay rate and increase rate thereof as basic values.
【００１２】このように、本発明の電池出荷検査法を利
用することによって、第１回目の検査で、必要以上に電
池の検査基準を厳しくして選別する必要がない。また、
第２回目の検査では、電池特性を利用した電池の減水率
や増加率を求めているので、良品と不良品の選別を精度
良く行うことができる。As described above, by using the battery shipping inspection method of the present invention, it is not necessary to make the inspection criteria of the battery more strict than necessary in the first inspection. Also,
In the second inspection, since the water reduction rate and the increase rate of the battery using the battery characteristics are obtained, the non-defective product and the defective product can be accurately selected.
【００１３】さらに、コンピューターを利用しているの
で、電池情報、例えば電池の生産ロットや品種、また第
１回と第２回の検査値などをコンピュータの記憶部に記
憶しているので、電池の品質管理や品質保証情報として
も利用できる。Further, since a computer is used, battery information, for example, the production lot and type of the battery, and the first and second inspection values are stored in the storage unit of the computer. It can also be used as quality control and quality assurance information.
【００１４】[0014]
【実施例】以下、本発明の実施例について、詳細に説明
する。Embodiments of the present invention will be described below in detail.
【００１５】実施例は、充放電可能なニッケル−水素蓄
電池を例として、電池情報として生産ロットを用いた電
池出荷検査法について説明する。In the embodiment, a battery shipping inspection method using a production lot as battery information will be described by taking a chargeable / dischargeable nickel-hydrogen storage battery as an example.
【００１６】なお、本発明は、この実施例に限定される
ものではない。The present invention is not limited to this embodiment.
【００１７】（実施例）この電池の例は、図１に示して
いる。この電池は、円筒形のニッケル−水素蓄電池であ
り、金属ケース上に電池情報として電池の生産ロット番
号がバーコードとなって表示されている。EXAMPLE An example of this battery is shown in FIG. This battery is a cylindrical nickel-hydrogen storage battery, and a production lot number of the battery is displayed as a bar code on a metal case as battery information.
【００１８】図２に本発明と比較例の電池の出荷前の検
査方法を示す。FIG. 2 shows a method of inspecting the batteries of the present invention and the comparative example before shipping.
【００１９】この各電池が組み立てられた後に、活性化
を行うために充放電を２回行いその日に生産された電池
数量約１００万セルを１ロットとし、その日のロット番
号を連番で電池側面に印刷する。After each battery is assembled, charging and discharging are performed twice to activate the battery, and the number of batteries produced on that day is set as about 1 million cells as one lot. Print on
【００２０】この時の印刷は、インクジェット式プリン
ターを用いてバーコード形式により行う。次にロット番
号を側面に持った各電池は、側面のロット番号を読み取
るための読取装置（以下バーコードリーダーという）と
各電池の電圧を測定する測定装置が接続されているコン
ピューター管理装置に送られる。The printing at this time is performed in a barcode format using an ink jet printer. Next, each battery having the lot number on the side is sent to a computer management device connected to a reading device (hereinafter referred to as a barcode reader) for reading the lot number on the side and a measuring device for measuring the voltage of each battery. Can be
【００２１】この検査工程ではロット番号をバーコード
リーダーで読み取りと同時に各電池の電圧（以下、ＯＣ
Ｖという）値と内部抵抗（以下、ＩＲという）値を測定
し、測定時刻とともに第１回目の値としてロット番号を
基準としてコンピューターに記憶される。In this inspection step, the lot number is read by a bar code reader and the voltage of each battery (hereinafter referred to as OC) is read at the same time.
V) and an internal resistance (hereinafter, referred to as IR) value are measured and stored in a computer together with the measurement time as a first value based on the lot number.
【００２２】この時、第１回目の電圧値が１．２０ボル
ト未満または内部抵抗３５ミリオーム以上のものは廃棄
される。At this time, those whose first voltage value is less than 1.20 volts or whose internal resistance is 35 milliohms or more are discarded.
【００２３】電池を４５℃で１週間放置（所定期間Ｂ）
したエージング工程を経た後、各電池を再度検査工程へ
送り検査を行い同一のロット番号とともに第２回目の値
としてコンピューターに記憶する。The battery is left at 45 ° C. for one week (predetermined period B)
After passing through the aging process, each battery is sent again to the inspection process, inspected, and stored in the computer as the second value together with the same lot number.
【００２４】各電池の検査工程での判定条件は、ロット
番号を基準として各電池の第１回目の値と第２回目の値
から電圧差と内部抵抗差および測定時間差を計算し電圧
降下率と内部抵抗上昇率を算出する。The determination conditions in the inspection process of each battery are as follows: the voltage difference, the internal resistance difference, and the measurement time difference are calculated from the first value and the second value of each battery based on the lot number, and the voltage drop rate and Calculate the internal resistance rise rate.
【００２５】その電圧降下率と内部抵抗上昇率のバラツ
キから統計的手法を用いてシグマ値を計算し、その電圧
降下率との平均値から３倍のシグマ値を引いた値を下限
値の電圧降下率と内部抵抗上昇率の平均値から３倍のシ
グマ値を加えた値を上限値として選別を行う。A sigma value is calculated from the variation of the voltage drop rate and the internal resistance rise rate using a statistical method, and a value obtained by subtracting a sigma value three times from the average value of the voltage drop rate and the lower limit voltage is calculated. Sorting is performed with the upper limit set to a value obtained by adding three times the sigma value from the average value of the drop rate and the internal resistance rise rate.
【００２６】この検査工程で下限値の電圧降下率を下回
った電池およびは内部抵抗の上限値を上回った電池は廃
棄処分にされ、また各電池の電圧値が１．２０ボルト未
満のもの、または内部抵抗３５ミリオーム以上のものも
廃棄される。In this inspection step, batteries having a voltage drop below a lower limit value and batteries having an internal resistance exceeding an upper limit value are discarded, and batteries having a voltage value of less than 1.20 volts, or Those with an internal resistance of 35 mOhm or more are also discarded.
【００２７】（比較例１）従来方法の検査工程は図２に
示してあるように、４５℃２０日間放置（所定期間Ａ）
したエージング工程を経た後、電池電圧値と内部抵抗値
を検査しており、つまり１回の検査のみ行っている。(Comparative Example 1) As shown in FIG. 2, the inspection step of the conventional method was left at 45 ° C. for 20 days (predetermined period A).
After the aging process, the battery voltage value and the internal resistance value are inspected, that is, only one inspection is performed.
【００２８】この電池の電圧値と内部抵抗値のバラツキ
から統計的手法を用いてシグマ値を計算し、その電圧平
均値から３倍のシグマ値を引いた値を下限値の電圧と内
部抵抗の平均値から３倍のシグマ値を加えた値を上限値
として選別を行う。A sigma value is calculated from the variation of the voltage value and the internal resistance value of the battery by using a statistical method, and a value obtained by subtracting a sigma value three times from the voltage average value is used as the lower limit voltage and the internal resistance value. Sorting is performed with the value obtained by adding three times the sigma value from the average value as the upper limit value.
【００２９】この検査工程で下限値の電圧を下回った電
池、および内部抵抗の上限値を上回った電池は廃棄処分
にされ、また各電池の電圧値が１．２０ボルト未満のも
の、または内部抵抗３５ミリオーム以上のものも廃棄さ
れる。In this inspection step, batteries having a voltage lower than the lower limit value and batteries having a voltage exceeding the upper limit value of the internal resistance are discarded. Anything over 35 milliohms is also discarded.
【００３０】[0030]
【発明の効果】以上、説明してきたように、検査工程を
２回行う本発明では、電圧降下率や内部抵抗上昇率を各
電池毎に計算されるので、従来の電池特性値バラツキ分
布の中に入ってしまっている不良品をも短時間でかつ正
確に選別できる。As described above, according to the present invention in which the inspection process is performed twice, the voltage drop rate and the internal resistance rise rate are calculated for each battery. Defective products that have already entered can be quickly and accurately selected.
【００３１】したがって従来は、エージング期間を約２
０日間必要としていたところ、７日間に短縮することが
可能となり、しかも検査精度も同時に向上している。Therefore, conventionally, the aging period is set to about 2
The time required for 0 days can be reduced to 7 days, and the inspection accuracy is also improved at the same time.
【図１】本発明の実施例における電池情報を電池ケース
上に表示した状態を示す図FIG. 1 is a diagram showing a state in which battery information is displayed on a battery case according to an embodiment of the present invention.
【図２】本発明の実施例と比較例における電池出荷検査
法の流れを示す図FIG. 2 is a diagram showing a flow of a battery shipping inspection method in an example of the present invention and a comparative example.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 奈良 学 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 Ｆターム(参考） 2G016 CA07 CB06 CB12 CC27 CE31 5H030 AS20 FF42 FF43 FF44 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Manabu Nara 1006 Kazuma Kadoma, Osaka Pref. Matsushita Electric Industrial Co., Ltd. F-term (reference) 2G016 CA07 CB06 CB12 CC27 CE31 5H030 AS20 FF42 FF43 FF44
Claims (3)
たコンピュータを利用して選別する方法であって、 （ａ）前記電池の情報を電池ケース上に表示する工程
と、 （ｂ）前記電池の情報を読取装置によって読み取る工程
と、 （ｃ）前記電池の電気特性値を測定装置によって測定
し、第１の電気特性値を求める工程と、 （ｄ）前記電池の情報と前記第１の電気特性値とを前記
測定時刻とともに前記コンピュータの記憶装置に記憶さ
せる工程と、 （ｅ）前記（ａ），（ｂ），（ｃ），（ｄ）の工程が完
了後、前記電池を所定時間放置するエージング工程と、 （ｆ）前記（ｅ）の工程の完了後、前記電池の情報を読
取装置によって読み取る工程と、 （ｇ）前記電池の電気特性値を測定装置によって測定
し、第２の電気特性値を求める工程と、 （ｈ）前記電池の情報と前記第２の電気特性値とを前記
測定時刻とともに前記コンピュータの記憶装置に記憶さ
せる工程と、 （ｉ）前記コンピュータの演算部で、前記所定時間に応
じて前記第１の電気特性値と第２の電気特性値との差、
または測定時間の差の関数として、前記電池の電気特性
値の減衰率または増加率を計算する工程と、 （ｊ）前記（ｉ）の工程で計算された減衰率や増加率に
基づき、前記電池を選別検査する工程と、を有する電池
出荷検査方法。1. A method for selecting a battery using a computer having a storage unit and an operation unit before shipping the battery, comprising: (a) displaying information of the battery on a battery case; A) reading the battery information with a reading device; (c) measuring the electrical characteristic value of the battery with a measuring device to obtain a first electrical characteristic value; (E) storing the electrical characteristic value in the storage device of the computer together with the measurement time; and (e) removing the battery after the steps (a), (b), (c), and (d) are completed. An aging step of allowing the battery to stand for a predetermined time; (f) a step of reading information of the battery by a reading device after the completion of the step (e); and (g) measuring an electrical characteristic value of the battery by a measuring device. Obtaining an electrical characteristic value of 2; (H) storing the information of the battery and the second electric characteristic value together with the measurement time in a storage device of the computer; and (i) an arithmetic unit of the computer according to the predetermined time. A difference between the first electrical property value and the second electrical property value,
Or calculating a decay rate or an increase rate of an electrical characteristic value of the battery as a function of a difference in measurement time; and (j) calculating the battery based on the decay rate or the increase rate calculated in the step (i). And inspecting the battery.
が所定の電気特性値の範囲内の電池とその範囲外の電池
を選別する請求項１記載の電池出荷検査方法。2. The battery shipping inspection method according to claim 1, wherein in the step (c), a battery whose first electric characteristic value is within a predetermined electric characteristic value range and a battery outside the predetermined electric characteristic value range are selected.
ーザー方式や熱刻印方式、または超音波方式により電池
上に形成される請求項１記載の電池出荷検査方法。3. The battery shipping inspection method according to claim 1, wherein the information on the battery is formed on the battery by an ink jet system, a laser system, a thermal engraving system, or an ultrasonic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000076067A JP2001266956A (en) | 2000-03-17 | 2000-03-17 | Delivery test method of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000076067A JP2001266956A (en) | 2000-03-17 | 2000-03-17 | Delivery test method of battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001266956A true JP2001266956A (en) | 2001-09-28 |
Family
ID=18593861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000076067A Pending JP2001266956A (en) | 2000-03-17 | 2000-03-17 | Delivery test method of battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001266956A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004132776A (en) * | 2002-10-09 | 2004-04-30 | Matsushita Electric Ind Co Ltd | Inspection method of battery |
| JP2014143164A (en) * | 2012-12-27 | 2014-08-07 | Automotive Energy Supply Corp | Method and device for checking secondary battery |
| KR20150033267A (en) * | 2013-09-24 | 2015-04-01 | 주식회사 엘지화학 | Method for Estimating Quality Specification of Battery Cell and Quality Control System Using the Same |
| CN113484786A (en) * | 2021-07-23 | 2021-10-08 | 广州鹏辉能源科技股份有限公司 | Lithium battery grouping method and device, computer equipment and readable storage medium |
| CN114308716A (en) * | 2021-12-31 | 2022-04-12 | 珠海冠宇电池股份有限公司 | Battery leakage detection method and device, computer equipment, system and storage medium |
-
2000
- 2000-03-17 JP JP2000076067A patent/JP2001266956A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004132776A (en) * | 2002-10-09 | 2004-04-30 | Matsushita Electric Ind Co Ltd | Inspection method of battery |
| JP2014143164A (en) * | 2012-12-27 | 2014-08-07 | Automotive Energy Supply Corp | Method and device for checking secondary battery |
| KR20150033267A (en) * | 2013-09-24 | 2015-04-01 | 주식회사 엘지화학 | Method for Estimating Quality Specification of Battery Cell and Quality Control System Using the Same |
| KR101650041B1 (en) | 2013-09-24 | 2016-08-22 | 주식회사 엘지화학 | Method for Estimating Quality Specification of Battery Cell and Quality Control System Using the Same |
| CN113484786A (en) * | 2021-07-23 | 2021-10-08 | 广州鹏辉能源科技股份有限公司 | Lithium battery grouping method and device, computer equipment and readable storage medium |
| CN114308716A (en) * | 2021-12-31 | 2022-04-12 | 珠海冠宇电池股份有限公司 | Battery leakage detection method and device, computer equipment, system and storage medium |
| CN114308716B (en) * | 2021-12-31 | 2024-04-19 | 珠海冠宇电池股份有限公司 | Battery leakage detection method, device, computer equipment, system and storage medium |
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