JPH0845541A - Sealing degree deciding method of sealed battery - Google Patents
Sealing degree deciding method of sealed batteryInfo
- Publication number
- JPH0845541A JPH0845541A JP6179124A JP17912494A JPH0845541A JP H0845541 A JPH0845541 A JP H0845541A JP 6179124 A JP6179124 A JP 6179124A JP 17912494 A JP17912494 A JP 17912494A JP H0845541 A JPH0845541 A JP H0845541A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- sealing
- sealed
- gas pressure
- degree
- 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
- Examining Or Testing Airtightness (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、密閉型電池の密閉不良
を検出する方法に関し、詳しくは電池液の液漏れを予測
する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of detecting a sealing failure of a sealed battery, and more particularly to a method of predicting liquid leakage of battery fluid.
【０００２】[0002]
【従来の技術】近年、ワープロ、パソコン、ビデオカメ
ラ、携帯電話等のポータブル電子機器の普及に伴い、こ
れら機器を動作させる電源として密閉型電池の需要が増
大している。ところで、一般に前記電子機器は精密で高
価なものが多いので、これらの電子機器には、信頼性の
高い高品質な電池の使用が望まれ、特に密閉度が悪い電
池の使用は好ましくない。何故なら、電池密閉度合いの
悪い電池を電子機器に使用した場合、電解液等の漏洩に
より機器内部が腐食又は破損し、動作不能に陥る等のト
ラブルが発生するからである。そこで、このような事故
を防ぐため、従来より電池の密閉度をより完全にすべ
く、電池封口方法の改良がなされており、最近では、ガ
スケットを挟んで封口するクリンプ封口技術やレーザ溶
接により密閉する技術などを用い電池の密閉化が図られ
ている。2. Description of the Related Art In recent years, with the spread of portable electronic devices such as word processors, personal computers, video cameras, and mobile phones, there is an increasing demand for sealed batteries as a power source for operating these devices. By the way, since most of the electronic devices are precise and expensive, it is desirable to use highly reliable and high quality batteries for these electronic devices, and it is particularly not preferable to use batteries with poor sealing. This is because when a battery with a poorly sealed battery is used in an electronic device, the inside of the device may be corroded or damaged due to leakage of an electrolytic solution or the like, causing a trouble such as inoperability. Therefore, in order to prevent such an accident, the battery sealing method has been improved in order to make the battery more completely sealed, and recently, a crimp sealing technique for sealing with a gasket or laser welding has been used. The battery is sealed by using such a technique.
【０００３】しかしながら、このような技術を適用して
製造される電池であっても、全ての電池について、密閉
の完全を期すことはできない。つまり、電池組立段階で
密閉度の不充分な電池を完全になくすことはできない。
このため、電池組立工程が完了した段階で、電池を長期
間放置し、液漏れの有無を確認するクリーピング確認試
験が行われている。しかし、従来から行われているこの
方法は、簡便な方法であるものの、長時間を必要とする
とともに、微小なピンホールなどによる密閉不良を検出
できないという問題がある。However, even in the case of batteries manufactured by applying such a technique, it is not possible to achieve perfect sealing for all batteries. That is, it is not possible to completely eliminate a battery with an insufficient degree of sealing at the battery assembly stage.
For this reason, at the stage where the battery assembly process is completed, a creeping confirmation test is performed in which the battery is left for a long period of time and the presence or absence of liquid leakage is confirmed. However, although this method that has been conventionally performed is a simple method, it has a problem that it requires a long time and a sealing failure due to a minute pinhole or the like cannot be detected.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記のような
問題点に鑑み、密閉型電池における密閉不良を迅速かつ
確実に、しかも簡便に判定できる方法を提供することを
目的としてなされたものである。SUMMARY OF THE INVENTION In view of the above problems, the present invention has been made for the purpose of providing a method capable of quickly, reliably and simply determining a sealing failure in a sealed battery. is there.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、請求項１の発明は、密閉型電池の内部ガス圧と外部
ガス圧とに圧力差を生じさせることによって液漏れ及び
／又はクリーピングを加速する液漏れ加速工程を有する
密閉型電池の密閉度合い判定方法であることを特徴とす
る。In order to achieve the above-mentioned object, the invention of claim 1 provides liquid leakage and / or clogging by causing a pressure difference between the internal gas pressure and the external gas pressure of a sealed battery. A method for determining the degree of sealing of a sealed battery, which includes a liquid leakage acceleration step of accelerating leaping.
【０００６】請求項２の発明は、密閉型電池を密閉容器
内に入れ、前記容器内を減圧にし、密閉型電池の内部ガ
ス圧と外部ガス圧に差をつけた状態で所定時間経過する
まで電池を放置することによって、液漏れ及び／又はク
リーピングを加速する液漏れ加速工程を有する密閉型電
池の密閉度合い判定方法であることを特徴とする。請求
項３の発明は、密閉型電池を所定電流で所定時間充電
し、電池内部ガス圧を上昇させることによって、液漏れ
及び／又はクリーピングを加速させる液漏れ加速工程を
有する密閉型電池の密閉度合い判定方法であることを特
徴とする。According to a second aspect of the present invention, the sealed battery is placed in a sealed container, the inside of the container is depressurized, and a predetermined time elapses with a difference in internal gas pressure and external gas pressure of the sealed battery. A method for determining the degree of sealing of a sealed battery, which includes a liquid leakage acceleration step of accelerating liquid leakage and / or creeping by leaving the battery unattended. According to the invention of claim 3, the sealed battery is sealed, which has a liquid leakage accelerating step of accelerating liquid leakage and / or creeping by charging the sealed battery with a predetermined current for a predetermined time and increasing the gas pressure inside the battery. The method is a degree determination method.
【０００７】請求項４の発明は、密閉型電池を密閉容器
内に入れ、前記容器内を所定圧に加圧して電池内部ガス
圧と外部ガス圧に差をつけ、この状態で所定時間経過さ
せた後に、前記密閉容器内の圧力減少程度を測定するこ
とにより、密閉型電池の密閉度合いを判定する電池密閉
度合い判定方法であることを特徴とする。According to a fourth aspect of the present invention, the hermetically sealed battery is placed in a hermetically sealed container, and the inside of the container is pressurized to a predetermined pressure to make a difference between the internal gas pressure of the battery and the external gas pressure. After that, it is a battery sealing degree determining method for determining the sealing degree of the sealed battery by measuring the degree of pressure decrease in the sealed container.
【０００８】[0008]
【作用】本発明では、密閉型電池の内部ガス圧と外部ガ
ス圧に圧力差を生じさせるように構成したが、密閉の不
完全な電池に内外圧力差を生じさせると、電池外部のガ
ス圧力が高い場合には電池内部に電池外部のガスが浸入
する。したがって、電池内部に浸入するガス量を測定す
ることにより、電池の密閉度合いを知ることができる。
具体的には、密閉容器に電池を入れ、所定量の圧縮ガス
体（空気、窒素ガス等）で電池に圧力をかけるように構
成すれば、電池内部にガスが浸入した場合には、前記密
閉容器内のガス圧力が減少する。よって、この減少量を
測定することにより容易に電池内部にガスが浸入したこ
と又は浸入ガス量を知ることができる。そして、この
際、電池密閉度合いが悪いほど、単位時間当たりのガス
浸入量が大きく、また電池外部圧力を高めなくとも電池
内部にガスが浸入するので、電池外部圧力の設定条件と
電池内部へのガス浸入の有無または浸入量との関係か
ら、電池密閉度合いを判定することが可能となる。In the present invention, the pressure difference between the internal gas pressure and the external gas pressure of the sealed battery is generated. However, if the internal and external pressure difference is generated in a battery that is not completely sealed, the gas pressure outside the battery is increased. When the value is high, gas outside the battery penetrates into the battery. Therefore, the degree of sealing of the battery can be known by measuring the amount of gas that enters the battery.
Specifically, if the battery is placed in a closed container and pressure is applied to the battery with a predetermined amount of compressed gas (air, nitrogen gas, etc.), if the gas enters the battery, the sealed The gas pressure in the container is reduced. Therefore, by measuring the amount of decrease, it is possible to easily know that gas has invaded the inside of the battery or the amount of invaded gas. At this time, the poorer the battery sealing degree, the larger the amount of gas infiltration per unit time, and the gas intrudes into the battery without increasing the battery external pressure. The degree of battery sealing can be determined from the relationship with the presence or absence of gas infiltration or the amount of gas infiltration.
【０００９】他方、電池内部のガス圧力の方が高い場合
には、電池内部からガス又はガスと共に電解液が電池外
部に漏れ出る。したがって、このガス又は電解液を直接
検出することにより電池外部へのガス漏れ等を知ること
ができる他、電池内部からガス等が電池外部に漏れ出る
現象にともなって発生するクリーピングや液漏れを肉眼
的に観察することによっても知ることができる。ここ
で、電池内部のガス圧力を電池外部のガス圧より高める
方法としては、例えば、電池を密閉容器に入れ、容器内
を減圧し、更に必要ならば電池を加温する方法があり、
また電池を急速充電することによっても電池内部ガス圧
力を高めることができる。また、電池内からのガス漏れ
を直接検出する方法としては、例えば酸素又は水素を検
知可能なガスセンサーを用いる方法が挙げられ、電解液
漏れを直接検出する方法としては、例えばｐＨセンサー
を用いる方法が挙げられる。このようにして電池内部の
ガス圧力を電池外部より高め、液漏れ等を検出する方法
の場合においても、電池外部の減圧程度や充電条件と電
解液漏れとの関係から、電池密閉度合いを判定できる。On the other hand, when the gas pressure inside the battery is higher, the gas or the electrolyte together with the gas leaks out of the battery from the inside of the battery. Therefore, it is possible to know the gas leakage to the outside of the battery by directly detecting this gas or the electrolytic solution, and also to prevent the creeping and the liquid leakage which are caused by the phenomenon that the gas or the like leaks to the outside of the battery from the inside of the battery. It can also be known by observing with the naked eye. Here, as a method of increasing the gas pressure inside the battery above the gas pressure outside the battery, for example, there is a method of putting the battery in a closed container, reducing the pressure in the container, and further heating the battery if necessary,
The gas pressure inside the battery can also be increased by rapidly charging the battery. Further, as a method of directly detecting gas leakage from the inside of the battery, for example, a method of using a gas sensor capable of detecting oxygen or hydrogen can be cited, and as a method of directly detecting electrolyte leakage, for example, a method of using a pH sensor. Is mentioned. In this way, even in the case of the method of increasing the gas pressure inside the battery more than the outside of the battery to detect liquid leakage, the degree of battery sealing can be determined from the degree of depressurization outside the battery and the relationship between charging conditions and electrolyte leakage. .
【００１０】以上のように、本発明方法によれば、迅速
かつ確実に電池密閉度合いを判定できるが、この本発明
にかかる電池密閉度合いの結果を実際の使用条件におけ
る電池液漏れと関連付けておくことにより、実際の使用
状態における電解液漏れの予測が可能になる。As described above, according to the method of the present invention, the degree of battery sealing can be determined quickly and surely. The result of the degree of battery sealing according to the present invention is associated with the leakage of the battery under the actual use condition. This makes it possible to predict the electrolyte leakage in the actual use state.
【００１１】[0011]
【実施例】本発明を、実施例に基づいて具体的に説明す
る。 〔実施例１〕実施例１では、電池外部加圧方式によって
電池密閉度合いを判定した。以下、その方法を詳細に説
明する。EXAMPLES The present invention will be specifically described based on examples. [Example 1] In Example 1, the degree of battery sealing was determined by a battery external pressurization method. The method will be described in detail below.
【００１２】初めに、実施例１で使用した密閉容器を図
１に基づいて説明する。この密閉容器本体１は、内部容
積が６．２０ｃｍ3 で、外寸が５０．０ｍｍ×２０．０
ｍｍ×６、２ｍｍの大きさの直方体であり、容器側壁に
は圧力ゲージ４、及び容器内に定量的にガスを導入でき
るシリンダー３が付設されている次に、密閉度合いを調
べた角形ニッケル−カドミウム電池について、図２に基
づいて説明する。この電池は、図２に示したように、ガ
スケット１０を挟むクリンプ封口部分ａと、外装缶と封
口体とをレーザー溶接した封口部分ｂの２箇所に封口部
を有し、電池の外表面の体積は４．２０ｃｍ3 、また正
極、負極、セパレータ、電解液等の電池構成要素を除い
た電池内部の空間容積は、０．５０ｃｍ3である。な
お、この電池は４００ｍＡｈの容量で設計されたもので
ある。First, the closed container used in Example 1 will be described with reference to FIG. The closed container body 1 has an inner volume of 6.20 cm 3 and an outer dimension of 50.0 mm × 20.0.
It is a rectangular parallelepiped having a size of mm × 6, 2 mm, and a pressure gauge 4 and a cylinder 3 capable of quantitatively introducing gas into the container are attached to the side wall of the container. The cadmium battery will be described with reference to FIG. As shown in FIG. 2, this battery has a sealing portion at two positions, that is, a crimp sealing portion a for sandwiching the gasket 10 and a sealing portion b where the outer can and the sealing body are laser-welded. The volume is 4.20 cm 3 , and the space volume inside the battery excluding the battery constituent elements such as the positive electrode, the negative electrode, the separator, and the electrolytic solution is 0.50 cm 3 . The battery was designed with a capacity of 400 mAh.
【００１３】（密閉度合いの判定方法）密閉型電池２を
前記密閉容器本体１に入れ、容器を密閉状態とした。開
閉弁５ｂを開放し、５ａを閉じててシンリダー内に１０
ｃｍ3 の空気を導入したのち、開閉弁５ｂを閉じる。そ
の後、開放弁５ａを開き、シリンダー３内のガスを容器
本体１に注入し同時に開閉弁５ａを閉じて、圧力ゲージ
４で容器内圧力を読み取る。この状態で３秒間放置し、
３秒後に再び圧力ゲージ４で容器内圧力を読み取った。
この時の環境温度及び導入空気の温度は２５±５℃とし
た。なお、空気導入当初のゲージ圧は５０６５ｈＰａ
（ヘクトパスカル）であった。(Method of Determining Sealing Degree) The sealed battery 2 was put in the sealed container body 1 and the container was sealed. Open the on-off valve 5b and close 5a to allow 10
After introducing cm 3 of air, the on-off valve 5b is closed. After that, the open valve 5a is opened, the gas in the cylinder 3 is injected into the container body 1, the on-off valve 5a is closed at the same time, and the pressure inside the container is read by the pressure gauge 4. Leave for 3 seconds in this state,
After 3 seconds, the pressure inside the container was read again with the pressure gauge 4.
At this time, the environmental temperature and the temperature of the introduced air were set to 25 ± 5 ° C. The gauge pressure at the beginning of air introduction is 5065 hPa.
(Hectopascal).
【００１４】上記のようなような密閉度試験を、百万個
の前記電池について行ったところ、ゲージ圧５０００〜
４５００ｈＰａの電池が２０個、ゲージ圧４５００ｈＰ
ａ未満の電池が２個あることが確認された。これらの電
池について、クリンプ封口部分とレーザー封口部分の顕
微鏡観察を行った。その結果、ゲージ圧５０００〜４５
００ｈＰａの電池では、何れの電池も封口部分に密閉不
良となるような異常が認められなった。他方、ゲージ圧
４５００ｈＰａ未満の電池では、全てレーザー溶接部分
に溶接不良が認められた。The sealing test as described above was carried out on one million cells, and a gauge pressure of 5,000 to 5,000 was obtained.
20 batteries of 4500hPa, gauge pressure 4500hP
It was confirmed that there were two batteries less than a. With respect to these batteries, the crimp sealing portion and the laser sealing portion were observed under a microscope. As a result, gauge pressure 5000-45
In the case of the batteries of 00 hPa, no abnormality was found in the sealing portion of the batteries, resulting in poor sealing. On the other hand, in the batteries having a gauge pressure of less than 4500 hPa, welding defects were observed in all the laser welded portions.
【００１５】更に、レーザー封口部分に異常が確認され
なかったゲージ圧５０００〜４５００ｈＰａの電池につ
いて、１か月間室温で放置した後、顕微鏡観察した。そ
の結果、２０個中１８個の電池にレーザー封口部分のク
リーピングが確認され、残りの２個については、クリン
プ封口部分のクリーピングが確認された。他方、ゲージ
圧が５０００ｈＰａ以上であった９９万９千９７８個の
電池を３か月間室温に放置し、肉眼でクリーピングを観
察したところ、いずれの電池にもクリーピングが確認さ
れなかった。Further, a battery having a gauge pressure of 5000 to 4500 hPa in which no abnormality was confirmed in the laser sealing portion was left at room temperature for one month and then observed under a microscope. As a result, creeping of the laser sealing portion was confirmed in 18 of the 20 batteries, and creeping of the crimp sealing portion was confirmed in the remaining 2 batteries. On the other hand, when 99,978 cells with a gauge pressure of 5000 hPa or more were left at room temperature for 3 months and observed for creeping with the naked eye, no creeping was confirmed in any of the cells.
【００１６】このことから、この条件下では、前記容器
本体１の内圧の減少が６５ｈＰａ未満であれば電池密閉
度合いが完全であり、６５〜５６５ｈＰａである場合に
はやや密閉不良であり、５６５ｈＰａを超えて減少した
場合には密閉不良の電池であると判定できる。即ち、電
池を空気等のガス体で加圧し、加圧圧力の減少程度を測
定することにより、簡便迅速に電池の密閉度合いを判定
できることが明らかになった。 〔実施例２〕実施例２では、電池外部減圧方式によって
電池密閉度合いを判定した。Therefore, under this condition, if the decrease in the internal pressure of the container body 1 is less than 65 hPa, the degree of battery sealing is perfect, and if it is 65 to 565 hPa, the sealing is a little poor and 565 hPa is required. If the amount of decrease exceeds the limit, it can be determined that the battery has a poor sealing. That is, it has been clarified that the degree of sealing of the battery can be determined simply and quickly by pressurizing the battery with a gas such as air and measuring the degree of decrease in the pressurizing pressure. [Example 2] In Example 2, the degree of battery sealing was determined by a battery external depressurization method.
【００１７】密閉度合いの判定対象の電池として、前記
と同様の角形ニッケル−カドミウム電池を１００万個用
い、密閉容器として実施例１と同様の容器を用いた。 （密閉度合い測定方法）図１において、開閉弁５ａ及び
５ｂの開閉を調整しつつシリンダー３を動作させて、容
器１を１００ｈＰａまで減圧し、この状態で２４時間放
置し、２４時間後に電池からの液漏れを肉眼観察した。
その結果、２５個の電池についてクリーピングが確認さ
れ、残りの９９万９千９７５個の電池には異常が確認さ
れなかった。1 million prismatic nickel-cadmium batteries similar to the above were used as the batteries whose degree of sealing was to be determined, and the same container as in Example 1 was used as the sealed container. (Method of measuring degree of sealing) In FIG. 1, the cylinder 3 is operated while adjusting the opening and closing of the on-off valves 5a and 5b to depressurize the container 1 to 100 hPa, leave it in this state for 24 hours, and after 24 hours, remove from the battery. The liquid leakage was visually observed.
As a result, creeping was confirmed in 25 batteries, and no abnormality was confirmed in the remaining 99,975 batteries.
【００１８】異常の確認されなかった電池については、
更に３か月間室温に電池を放置し、クリーピングの有無
を観察した。その結果、何れの電池にもクリーピングが
確認されなかった。これらの結果から、電池外部を減圧
状態にすると、密閉度合いの悪い電池では、電池内部の
電解液やガスが電池外部に吸い出されるために、クリー
ピング現象が加速されるものと考えられる。このことか
ら、電池外部を減圧することにより、短時間に密閉度合
いを測定できることが明らかになった。Regarding the batteries for which no abnormality is confirmed,
Further, the battery was left at room temperature for 3 months and observed for creeping. As a result, creeping was not confirmed in any of the batteries. From these results, it is considered that when the outside of the battery is depressurized, the creeping phenomenon is accelerated in the battery having a poor degree of sealing because the electrolyte and gas inside the battery are sucked out to the outside of the battery. From this, it was clarified that the degree of sealing can be measured in a short time by reducing the pressure outside the battery.
【００１９】なお、クリーピングが観察された電池を透
明容器に入れ、５０ｈＰａに減圧したところ、クリーピ
ング箇所から肉眼で容易に確認できる程度に液漏れが発
生した。よって電池外部減圧方式においては、映像処理
を用いて液漏れを自動検出することが可能である。 〔実施例３〕実施例３では、電池外部を常圧とし、電池
内部を加圧する方式によって電池密閉度合いを測定し
た。When a battery in which creeping was observed was placed in a transparent container and depressurized to 50 hPa, liquid leakage occurred from the creeping portion to the extent that it could be easily confirmed with the naked eye. Therefore, in the battery external pressure reducing method, it is possible to automatically detect the liquid leakage by using image processing. [Example 3] In Example 3, the degree of battery sealing was measured by a method in which the outside of the battery was at normal pressure and the inside of the battery was pressurized.
【００２０】実施例１と同様の角形ニッケル−カドミウ
ム電池を１００万個用い、これら電池を０．８Ａで３分
間充電したのち、２４時間放置し、クリーピングの発生
の有無を調べた。その結果、１９個の電池にクリーピン
グが確認された。残りの９９万９千９８１個の電池につ
いては、更に３か月室温で放置しクリーピングの有無を
調べた。その結果、何れの電池にもクリーピングが認め
られなかった。1 million prismatic nickel-cadmium batteries similar to those used in Example 1 were used. These batteries were charged at 0.8 A for 3 minutes and then allowed to stand for 24 hours to examine whether creeping occurred. As a result, creeping was confirmed in 19 batteries. The remaining 999,981 batteries were left for 3 months at room temperature and examined for creeping. As a result, no creeping was observed in any of the batteries.
【００２１】これらの結果から、高率充電による電池内
圧を高める方式によって、電池密閉度合いが測定できる
ことが明らかになった。なお、電池に対し高率充電によ
り密閉度合いの判定が可能となるのは、高率充電を行う
と電極反応により電池温度が上昇するとともに、電池内
部でガスが発生するために電池内部圧力が高まり、これ
により電池密閉度合いが悪い場合に発生する電解液漏れ
やクリーピング現象を加速させることができるからであ
る。From these results, it became clear that the degree of battery sealing can be measured by the method of increasing the battery internal pressure by high rate charging. It is possible to determine the degree of sealing of the battery by high-rate charging because high-rate charging raises the battery temperature due to the electrode reaction and gas generation inside the battery, which increases the battery internal pressure. This is because it is possible to accelerate the electrolyte leakage or creeping phenomenon that occurs when the degree of battery sealing is poor.
【００２２】〔その他の事項〕 上記実施例１〜３では、電池内部又は外部を加圧又は
減圧する操作を１回だけ行ったが、密閉容器内の電池に
加圧と減圧を交互に繰り返す方法とすることもできる。
このような方法とすると、クリーピング現象や液漏れ現
象を更に強力に促進することができるので、一層迅速か
つ確実に電池密閉度合いの判定が可能となる。[Other Matters] In Examples 1 to 3 above, the operation of pressurizing or depressurizing the inside or outside of the battery was performed only once. However, the method of alternately pressurizing and depressurizing the battery in the sealed container was repeated. Can also be
With such a method, the creeping phenomenon and the liquid leakage phenomenon can be further strongly promoted, so that the degree of battery sealing can be determined more quickly and reliably.
【００２３】上記実施例２（電池外部減圧方式）、及
び実施例３（電池内部加圧方式）では、目視により液漏
れやクリーピングを観察する方法としたが、電池から漏
れ出た電解液や電池内部ガスを自動検出する装置を組み
合わせることによって、電池密閉度合いの判定を完全自
動化することもできる。電解液の自動検出は、例えば電
池の近傍にＰＨセンサーを配置することにより可能とな
り、漏れ出た電池内部ガスの自動検出は、例えば密閉容
器に水素センサーまたは酸素センサーを付設することに
よって実現できる。In the above-described Example 2 (external battery pressure reduction method) and Example 3 (internal battery pressure method), the method of visually observing liquid leakage and creeping was used. By combining a device that automatically detects the gas inside the battery, it is possible to completely automate the determination of the degree of battery sealing. The electrolytic solution can be automatically detected by, for example, disposing a PH sensor in the vicinity of the battery, and the leaked battery internal gas can be automatically detected by, for example, attaching a hydrogen sensor or an oxygen sensor to a closed container.
【００２４】上記実施例１〜２では、密閉容器内の加
圧又は減圧にシリンダーを用いる方法としたが、これに
限られるものではなく、どのような加圧又は減圧手段で
あってもよい。Although the cylinders are used for pressurization or depressurization in the closed container in the above-mentioned Examples 1 and 2, the present invention is not limited to this, and any pressurization or depressurization means may be used.
【００２５】[0025]
【発明の効果】以上のように本発明方法によれば、電池
の液漏れを加速でき、電池の密閉度合いを迅速かつ確実
にしかも簡便に判定できる。したがって、本発明方法に
より密閉度合いが良であると判定された電池は、電子機
器等の内部にあって液漏れ等のトラブルを発生させない
ので、密閉形電池の信頼性を高めることができる。即
ち、本発明方法の実用的価値は極めて高い。As described above, according to the method of the present invention, the liquid leakage of the battery can be accelerated and the degree of sealing of the battery can be determined quickly, reliably and simply. Therefore, the battery determined to have a good degree of sealing by the method of the present invention does not cause trouble such as liquid leakage inside the electronic device or the like, and thus the reliability of the sealed battery can be improved. That is, the practical value of the method of the present invention is extremely high.
【図１】本発明方法を実施するための装置の一例を示す
概念模式図である。FIG. 1 is a conceptual schematic diagram showing an example of an apparatus for carrying out the method of the present invention.
【図２】電池密閉度合いの判定対象とした密閉型ニッケ
ル−カドミウム電池の概要を示す斜視図である。FIG. 2 is a perspective view showing an outline of a sealed nickel-cadmium battery which is an object of determination of a battery sealing degree.
１ 密閉容器本体 ２ 密閉型電池 ３ シリンダー ４ 圧力ゲージ ５ 開閉弁 1 Closed container body 2 Closed battery 3 Cylinder 4 Pressure gauge 5 Open / close valve
Claims (4)
に圧力差を生じさせることによって液漏れ及び／又はク
リーピングを加速する液漏れ加速工程を有することを特
徴とする密閉型電池の密閉度合い判定方法。1. A sealed battery comprising a liquid leakage accelerating step of accelerating liquid leakage and / or creeping by causing a pressure difference between an internal gas pressure and an external gas pressure of the sealed battery. How to determine the degree of sealing.
器内を減圧にし、密閉型電池の内部ガス圧と外部ガス圧
に差をつけた状態で所定時間経過するまで電池を放置す
ることによって、液漏れ及び／又はクリーピングを加速
する液漏れ加速工程を有することを特徴とする密閉型電
池の密閉度合い判定方法。2. A hermetically sealed battery is placed in a hermetically sealed container, the inside of the container is depressurized, and the battery is allowed to stand for a predetermined time with a difference in internal gas pressure and external gas pressure of the hermetically sealed battery. The method for determining the degree of sealing of a sealed battery, comprising: a liquid leakage acceleration step of accelerating liquid leakage and / or creeping.
し、電池内部ガス圧を上昇させることによって、液漏れ
及び／又はクリーピングを加速させる液漏れ加速工程を
有することを特徴とする密閉型電池の密閉度合い判定方
法。3. A sealed type having a liquid leakage accelerating step of accelerating liquid leakage and / or creeping by charging the sealed type battery with a prescribed current for a prescribed time and increasing the gas pressure inside the battery. Battery sealing degree determination method.
器内を所定圧に加圧して電池内部ガス圧と外部ガス圧に
差をつけ、この状態で所定時間経過させた後に、前記密
閉容器内の圧力減少程度を測定することにより、密閉型
電池の密閉度合いを判定する電池密閉度合い判定方法。4. The hermetically sealed battery is placed in a hermetically sealed container, the container is pressurized to a predetermined pressure to make a difference between the internal gas pressure of the battery and the external gas pressure, and after a predetermined time has passed in this state, the hermetically sealed container is sealed. A battery sealing degree determination method for determining the sealing degree of a sealed battery by measuring the degree of pressure decrease in a container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6179124A JPH0845541A (en) | 1994-07-29 | 1994-07-29 | Sealing degree deciding method of sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6179124A JPH0845541A (en) | 1994-07-29 | 1994-07-29 | Sealing degree deciding method of sealed battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0845541A true JPH0845541A (en) | 1996-02-16 |
Family
ID=16060420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6179124A Pending JPH0845541A (en) | 1994-07-29 | 1994-07-29 | Sealing degree deciding method of sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0845541A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001236986A (en) * | 2000-02-22 | 2001-08-31 | Matsushita Electric Ind Co Ltd | Method of inspecting gastightness of battery |
| EP1675210A1 (en) * | 2004-12-22 | 2006-06-28 | Toyota Jidosha Kabushiki Kaisha | Battery, manufacturing method of battery and check method of electrolyte leakage |
| WO2007093091A1 (en) * | 2006-02-14 | 2007-08-23 | Shenzhen Bak Battery Co., Ltd. | An apparatus for detecting sealability of a lithium ion cell |
| KR101025516B1 (en) * | 2006-09-11 | 2011-04-04 | 주식회사 엘지화학 | Device for Measuring Volume Variation of Battery Cell |
| JP2012518160A (en) * | 2009-02-18 | 2012-08-09 | インフィコン ゲゼルシャフト ミット ベシュレンクテル ハフツング | How to functionally test a leak detector |
| WO2012117887A1 (en) * | 2011-03-01 | 2012-09-07 | 株式会社ｏｎｅＡ | Airtightness inspection apparatus |
| US9470602B2 (en) | 2010-06-17 | 2016-10-18 | Nissan Motor Co., Ltd. | Airtightness inspection method and airtightness inspection apparatus for sealed battery |
| JP6027707B1 (en) * | 2015-09-04 | 2016-11-16 | トヨタすまいるライフ株式会社 | Sealability inspection device |
-
1994
- 1994-07-29 JP JP6179124A patent/JPH0845541A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001236986A (en) * | 2000-02-22 | 2001-08-31 | Matsushita Electric Ind Co Ltd | Method of inspecting gastightness of battery |
| JP4671462B2 (en) * | 2000-02-22 | 2011-04-20 | パナソニック株式会社 | Airtight inspection method for nickel metal hydride secondary battery |
| EP1675210A1 (en) * | 2004-12-22 | 2006-06-28 | Toyota Jidosha Kabushiki Kaisha | Battery, manufacturing method of battery and check method of electrolyte leakage |
| CN100466368C (en) * | 2004-12-22 | 2009-03-04 | 丰田自动车株式会社 | Battery, manufacturing method of battery, and check method of electrolyte leakage |
| US8603194B2 (en) | 2004-12-22 | 2013-12-10 | Toyota Jidosha Kabushiki Kaisha | Battery, manufacturing method of battery, and check method of electrolyte leakage |
| WO2007093091A1 (en) * | 2006-02-14 | 2007-08-23 | Shenzhen Bak Battery Co., Ltd. | An apparatus for detecting sealability of a lithium ion cell |
| KR101025516B1 (en) * | 2006-09-11 | 2011-04-04 | 주식회사 엘지화학 | Device for Measuring Volume Variation of Battery Cell |
| JP2012518160A (en) * | 2009-02-18 | 2012-08-09 | インフィコン ゲゼルシャフト ミット ベシュレンクテル ハフツング | How to functionally test a leak detector |
| US9470602B2 (en) | 2010-06-17 | 2016-10-18 | Nissan Motor Co., Ltd. | Airtightness inspection method and airtightness inspection apparatus for sealed battery |
| WO2012117887A1 (en) * | 2011-03-01 | 2012-09-07 | 株式会社ｏｎｅＡ | Airtightness inspection apparatus |
| JP5050139B1 (en) * | 2011-03-01 | 2012-10-17 | 株式会社ｏｎｅＡ | Airtightness inspection device |
| JP6027707B1 (en) * | 2015-09-04 | 2016-11-16 | トヨタすまいるライフ株式会社 | Sealability inspection device |
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