JP3120122B2 - Airtightness inspection method and device for lead storage battery - Google Patents
Airtightness inspection method and device for lead storage batteryInfo
- Publication number
- JP3120122B2 JP3120122B2 JP03174222A JP17422291A JP3120122B2 JP 3120122 B2 JP3120122 B2 JP 3120122B2 JP 03174222 A JP03174222 A JP 03174222A JP 17422291 A JP17422291 A JP 17422291A JP 3120122 B2 JP3120122 B2 JP 3120122B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- battery case
- hydrogen
- test
- airtightness
- 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
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Examining Or Testing Airtightness (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鉛蓄電池の気密検査方
法とその装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for checking the airtightness of a lead storage battery.
【０００２】[0002]
【従来の技術】負極吸収式シール形鉛蓄電池において
は、その蓄電池の気密を保つことは、蓄電池の保存特性
上重要なことである。すなわち、蓄電池電槽とくに電槽
と蓋との接合部分、電極端子を挿通する部分などの気密
が保たれないと、大気中の酸素が蓄電池内に侵入し、鉛
蓄電池の負極活物質である海綿状鉛と反応してこれを酸
化鉛とする。負極活物質が酸化されると勿論蓄電池の放
電容量が少なくなるため、通常の負極吸収式シール形鉛
蓄電池では、厳密に気密検査をして気密不良品を完成品
にしないようにする必要がある。2. Description of the Related Art In a sealed lead storage battery of the negative electrode absorption type, it is important for the storage characteristics of the storage battery to maintain the airtightness of the storage battery. That is, if airtightness is not maintained at the storage battery case, particularly at the junction between the battery case and the lid, and at the portion through which the electrode terminals are inserted, oxygen in the atmosphere enters the storage battery, and the sponge, which is the negative electrode active material of the lead storage battery, Reacts with lead in the form of lead oxide. If the negative electrode active material is oxidized, the discharge capacity of the storage battery will decrease, of course. Therefore, it is necessary to strictly check the airtightness of a normal negative electrode absorption-type sealed lead storage battery so that a defective airtight product is not completed. .
【０００３】以下に従来の鉛蓄電池の気密検査方法およ
びその装置について図を参照しながら説明する。[0003] A conventional method for checking the airtightness of a lead storage battery and its apparatus will be described below with reference to the drawings.
【０００４】図３において、電槽１は隔壁によって内部
が仕切られて極板、セパレータ、電解液などが充填され
ることになる多くの素電池１−ａを構成しており、全体
として蓋２により気密に覆蓋されている。３は蓋２の各
素電池１−ａの上部に相応する部分に設けた排気孔であ
る。そしてこの排気孔３は逆止弁付きの排気孔になって
おり気密検査が終了して電池として保存される場合に、
電槽１を排気して後、大気が逆止弁によって侵入しない
よう電槽１を減圧に維持する役目をするものである。４
はガス導入管で、バルブ５を介し、前記排気孔３を利用
して電槽１内に検査ガスを圧入するものである。この検
査ガスは水素ガスであってもよいが、多くは水素ガスと
窒素ガスとの混合ガスである。６は電槽１と蓋２との接
合部分７に沿って密着させた側壁ガス採集板で、上記接
合部分７は接着剤によって気密に接着されているもので
あるが、電槽１内に圧入された検査ガスが接合部分７よ
り電池外に漏洩するのを捕集するものである。８は電極
端子９が蓋２の上部に挿通されている部分より電池外に
漏洩する検査ガスを捕集する端子部ガス捕集箱である。
そして側壁ガス採集板６と端子部ガス捕集箱８はガスセ
ンサー１０に連通している。上記ガスセンサー１０は検
査ガス中の水素ガスによって電気抵抗が変化してガスセ
ンサー１０に接続された電気回路に電圧出力として出力
され蓄電池の気密不良を発見することができる役目をす
るものである。このガスセンサー１０は一般に熱線式半
導体ガスセンサーが使用されている。[0004] In FIG. 3, a battery case 1 constitutes a number of unit cells 1-a whose interior is partitioned by partition walls to be filled with an electrode plate, a separator, an electrolytic solution, and the like. The cover is airtight. Reference numeral 3 denotes an exhaust hole provided in a portion of the lid 2 corresponding to the upper part of each unit cell 1-a. And this exhaust hole 3 is an exhaust hole with a check valve, and when the airtight inspection is completed and stored as a battery,
After the container 1 is evacuated, it serves to maintain the container 1 at a reduced pressure so that the air does not enter through the check valve. 4
Is a gas inlet pipe for press-injecting a test gas into the battery case 1 using the exhaust hole 3 via the valve 5. The inspection gas may be a hydrogen gas, but most is a mixed gas of a hydrogen gas and a nitrogen gas. Reference numeral 6 denotes a side wall gas collecting plate closely adhered along a joint portion 7 between the battery case 1 and the lid 2. The joint portion 7 is airtightly bonded by an adhesive, but is pressed into the battery case 1. The leaked inspection gas is collected from the joint portion 7 to the outside of the battery. Reference numeral 8 denotes a terminal gas collecting box for collecting a test gas leaking out of the battery from a portion where the electrode terminal 9 is inserted into the upper part of the lid 2.
The side wall gas collecting plate 6 and the terminal gas collecting box 8 communicate with a gas sensor 10. The gas sensor 10 changes its electrical resistance due to the hydrogen gas in the test gas and outputs it as a voltage output to an electric circuit connected to the gas sensor 10 to serve to detect a poor airtightness of the storage battery. As the gas sensor 10, a hot wire semiconductor gas sensor is generally used.
【０００５】上記装置を使用して検査ガスを排気孔３よ
り圧入し、気密不良箇処があると、その部分より検査ガ
スが漏洩してガスセンサー１０に作用してガスセンサー
１０の電気抵抗を変化させるので、その電圧を見ること
により蓄電池の気密不良の有無を検査するのが従来の検
査方法であった。When the test gas is press-fitted through the exhaust hole 3 using the above-described apparatus and there is a poor airtightness, the test gas leaks from that portion and acts on the gas sensor 10 to reduce the electric resistance of the gas sensor 10. Since the voltage is changed, the conventional inspection method is to inspect the storage battery for airtightness failure by checking the voltage.
【０００６】しかしながら、上記の従来の気密検査方法
およびその装置では蓄電池の気密不良を充分に発見する
結果は得られ難かった。その理由の第１は検査ガス中の
水素ガスの量を大量にすることができないため、ガスセ
ンサー１０による検出感度が充分でないということであ
った。However, it has been difficult for the above-mentioned conventional airtightness inspection method and apparatus thereof to sufficiently find a poor airtightness of the storage battery. The first reason is that the detection sensitivity of the gas sensor 10 is not sufficient because the amount of hydrogen gas in the test gas cannot be increased.
【０００７】すなわち、検査ガスを各素電池１−ａを構
成する電槽１内に多量に圧入することは蓄電池の強度上
の問題から困難であり、普通には０.4kg／cm2 程度の圧
入にとどめていた。That is, it is difficult to inject a large amount of the test gas into the battery case 1 constituting each unit cell 1-a due to the problem of the strength of the storage battery, and usually about 0.4 kg / cm 2 . I was just press-in.
【０００８】また圧入する検査ガス中の水素ガスの濃度
は爆発の危険性より余り濃くすることができず、電槽１
内では検査ガスを圧入した状態で水素濃度を３％程度に
抑えねばならなかった。従って上記の理由から蓄電池内
に圧入される水素ガスの量は多くなく、しかも電槽１内
に存在していた空気によって希釈されるため、余計に水
素ガスが薄く、この水素ガスを検知するガスセンサー１
０の検知能力は低くなり、図４にも見られるようにセン
サー出力はピークで４０ミリボルトを若干下廻る程度で
あった。In addition, the concentration of hydrogen gas in the test gas to be injected cannot be made much higher than the risk of explosion.
Inside, the hydrogen concentration had to be suppressed to about 3% while the test gas was being injected. Therefore, the amount of hydrogen gas injected into the storage battery is not large for the above-mentioned reason, and is diluted by the air existing in the battery case 1, so that the hydrogen gas is excessively thin, and the gas for detecting this hydrogen gas is used. Sensor 1
The detection capability of 0 was reduced, and the sensor output peaked slightly below 40 millivolts, as seen in FIG.
【０００９】更に他の理由は、検査ガスを電槽１内に単
に圧入するのみであるため、気密不良が電槽１内の減圧
のときに発生することを検査することができなかったと
いうことである。とくに電槽１と蓋２との接合部分７が
接着剤によって閉塞されているものであるため、減圧時
の気密不良が多いことが考えられる。負極吸収式シール
形鉛蓄電池は、通常電槽内部の空気の酸素を吸収するた
めに、保存中は電槽内部を減圧にしておくものであるか
ら、図４の加圧工程にみられるように従来１度だけの加
圧検査では充分な気密検査方法とはいえないものであ
る。Still another reason is that it was not possible to inspect that poor airtightness would occur when the pressure in the container 1 was reduced because the test gas was merely injected into the container 1. It is. In particular, since the joint 7 between the battery case 1 and the lid 2 is closed by the adhesive, it is conceivable that there are many poor airtightness during decompression. The negative-electrode-absorbing sealed lead-acid battery normally reduces the pressure inside the battery case during storage in order to absorb the oxygen of the air inside the battery case. Conventionally, only one pressurization inspection is not a sufficient airtightness inspection method.
【００１０】[0010]
【発明が解決しようとする課題】本発明は、前記従来技
術の問題点である蓄電池を構成する電槽内に圧入する検
査ガスが電槽内の既存空気によって希釈されること、お
よび電槽内が減圧状態になったときの気密不良を発見で
きないということを一挙に解決しようとするものであ
る。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art in that a test gas injected into a battery case forming a storage battery is diluted by the existing air in the battery case. It is an attempt to solve at once the inability to detect poor airtightness when the pressure is reduced.
【００１１】[0011]
【課題を解決するための手段】本発明は、前記する課題
を解決するために、蓄電池を構成する電槽内に検査ガス
を圧入する加圧工程と吸引による減圧工程とを繰返すこ
とにより、電槽内のガスを殆んど検査ガスのみに置換
し、しかも加圧時と減圧時の両方においてガスセンサー
により気密不良を検知する方法と装置を提供するもので
ある。According to the present invention, in order to solve the above-mentioned problems, an electric power supply is performed by repeating a pressurizing step of pressurizing a test gas into a battery container constituting a storage battery and a depressurizing step by suction. It is an object of the present invention to provide a method and an apparatus for replacing a gas in a tank almost exclusively with a test gas and detecting a poor airtightness by a gas sensor at both times of pressurization and depressurization.
【００１２】[0012]
【作用】本発明の鉛蓄電池の気密検査方法とその装置に
よれば、電槽内の既存ガスを検査ガスに置換して、漏洩
ガスをガスセンサーにより検査するので、電槽内に既存
する空気によって検査ガスが希釈されていることがな
く、しかも蓄電池内の加圧時と減圧時という実使用時を
含む状態での気密不良有無を検査するので、信頼性の高
い検査ができる。According to the method and the apparatus for checking the airtightness of a lead storage battery of the present invention, the existing gas in the battery case is replaced with a test gas, and the leak gas is tested by a gas sensor. As a result, the inspection gas is not diluted, and the presence / absence of airtightness in the storage battery in a state including a pressurized state and a depressurized state during the actual use is inspected, so that a highly reliable inspection can be performed.
【００１３】[0013]
【実施例】以下本発明の一実施例について述べる。An embodiment of the present invention will be described below.
【００１４】図１は、気密不良鉛蓄電池を、熱線式半導
体ガスセンサーを用い、かつ本発明の気密検査方法によ
って、検査を行なった結果を示すものである。まず３％
の水素ガスを含む窒素ガスを検査ガスとして図３の従来
例と同様に排気孔より電槽内に圧入する。この圧入によ
る電槽内の圧力は大気圧＋０.4kg／cm2 となる。これを
加圧１次工程とし、次に吸引ポンプによって電槽内の空
気および検査ガスを吸引して電槽内を大気圧より−０.4
kg／cm2 に減圧する。これを減圧１次工程とする。その
後さらに検査ガスを圧入して加圧２次工程に移行する。
電槽内は加圧工程と減圧工程の両方の圧力がかかり電槽
等の歪みが生じ、漏れ孔がある場合は、電槽内に圧入さ
れた検査ガスが通過して電槽外に漏洩する。この加圧と
減圧の工程を繰り返すことにより、電槽内の水素ガス濃
度は高くなり図１に示すように３％である検査ガス水素
濃度に近い値を示すようになる。この電槽内の水素濃度
が高いとセンサー検出感度が向上する。またこの加圧１
次工程、減圧１次工程さらに加圧２次工程と加圧、減圧
を繰返すことにより蓋と電槽の接合部分などの気密度が
検査することができる。加圧２次工程で検査ガスを電槽
内に圧入して、検査を終了し、図３に示す装置と同様、
ガス導入管を排気孔より離すと、電槽内の検査ガスが、
逆止弁を通って電槽回りの大気中に拡散される。しかし
逆止弁によって大気が電槽内に侵入することはない。そ
こで減圧２次工程で電槽内を減圧しておけば電槽内より
検査ガスが大気中に漏洩することもなく負極吸収式シー
ル形鉛蓄電池においてはその保存特性が良いものであ
る。FIG. 1 shows the result of an inspection of a poorly sealed lead-acid battery by using a hot-wire type semiconductor gas sensor and by the airtightness inspection method of the present invention. First 3%
As a test gas, the nitrogen gas containing the hydrogen gas is press-fitted into the battery case through the exhaust hole as in the conventional example of FIG. The pressure inside the battery case due to this press-fitting becomes atmospheric pressure + 0.4 kg / cm 2 . This is a primary step of pressurization, and then the air and the test gas in the container are sucked by a suction pump, and the inside of the container is -0.4 from atmospheric pressure.
Reduce pressure to kg / cm 2 . This is referred to as a first pressure reduction step. Thereafter, the inspection gas is further injected, and the process proceeds to the secondary pressurization step.
In the battery case, both the pressurizing process and the depressurizing process are performed, and the battery case is distorted. If there is a leak hole, the test gas injected into the battery case passes through and leaks out of the battery case. . By repeating the pressurizing and depressurizing steps, the hydrogen gas concentration in the battery case increases, and as shown in FIG. 1, comes to a value close to the test gas hydrogen concentration of 3%. If the hydrogen concentration in the battery case is high, the detection sensitivity of the sensor is improved. This pressurization 1
By repeating the next step, the first depressurization step, the second pressurization step, the pressurization and the depressurization, the air tightness of the joint between the lid and the battery case can be inspected. In the secondary pressurization process, the test gas is pressed into the battery case, and the test is completed.
When the gas inlet pipe is separated from the exhaust hole, the test gas in the battery case will
It is diffused into the atmosphere around the battery case through the check valve. However, the check valve does not allow the air to enter the battery case. Therefore, if the pressure in the battery case is reduced in the secondary pressure reducing step, the test gas does not leak into the atmosphere from the battery case, and the storage characteristics of the negative electrode absorption type sealed lead storage battery are good.
【００１５】なお図１において、ガスセンサーを接続し
た電気回路の出力は加圧１次工程で２０ミリボルトと低
い電圧値を示しているが、減圧１次工程および加圧２次
工程を経過して電槽内の空気を検査ガスに置換し、水素
ガス濃度が高くなると８０ミリボルトを示しセンサー感
度が高いことを表わしている。そして減圧２次工程を経
て電槽内が排気されると電圧値は急降下していることが
判る。しかしこのガスセンサー出力を示す曲線を見れ
ば、検査に供された鉛蓄電池は気密不良の製品であるこ
とが明白に把握することができる。In FIG. 1, the output of the electric circuit to which the gas sensor is connected shows a voltage value as low as 20 millivolts in the primary pressurizing step, but after the primary pressure reducing step and the secondary pressurizing step. The air in the battery case is replaced with a test gas, and when the hydrogen gas concentration increases, the air pressure indicates 80 millivolts, indicating that the sensor sensitivity is high. Then, when the inside of the battery case is evacuated through the secondary step of pressure reduction, it is understood that the voltage value drops sharply. However, by looking at the curve showing the output of the gas sensor, it can be clearly understood that the lead storage battery subjected to the inspection is a product with poor airtightness.
【００１６】図２には、電槽内の検査ガス濃度を本実施
例により高くすることにより、センサーの検出感度は従
来法における検出感度より２.5倍にもなっていることを
示し、いかに電槽内の空気を検査ガスに置き換えること
が重要であるかを示している。FIG. 2 shows that the detection sensitivity of the sensor is 2.5 times higher than that of the conventional method by increasing the test gas concentration in the battery case according to the present embodiment. It shows whether it is important to replace the air in the battery case with the test gas.
【００１７】以上の実施例においては、検査ガスは水素
ガスを含む窒素ガスを使用し、ガスセンサーはその水素
ガスによって抵抗値変化をする熱線式半導体を使用した
もので、このセンサーは水素濃度が数ＰＰＭから数千Ｐ
ＰＭまでは感度が比例する特徴がある。しかしこのセン
サーおよび水素ガスを含む窒素ガスに本発明は限定され
るものでなく、電槽内に気密不良箇所があるかどうかを
検出するガスおよびそのガスセンサーを使用することが
できるものである。In the above embodiment, the test gas uses nitrogen gas containing hydrogen gas, and the gas sensor uses a hot-wire type semiconductor whose resistance value changes with the hydrogen gas. Several PPM to several thousand P
There is a characteristic that sensitivity is proportional to PM. However, the present invention is not limited to this sensor and the nitrogen gas containing hydrogen gas, and a gas for detecting whether or not there is a poor airtightness in the battery case and a gas sensor thereof can be used.
【００１８】そして本実施例による気密不良の発見率は
唯一回の検査ガス加圧による従来の検査方法に比較して
５０％増大し、３２,0００個の蓄電池を検査した処、４
９個におよび気密不良率０.1５％の実績を挙げた。The detection rate of poor airtightness according to the present embodiment is increased by 50% as compared with the conventional inspection method using only one test gas pressurization.
Nine pieces have achieved an airtight defect rate of 0.15%.
【００１９】[0019]
【発明の効果】以上の本発明の実施例により明らかなよ
うに、検査ガスを電槽内に圧入するのみでなく、減圧を
して電槽内の既存の空気を検査ガスにできる限り置換し
て、ガスセンサーによる検出を容易にし、かつ蓄電池の
実使用時を含めて経過する電槽の減圧時の気密不良を的
確に把握することのできる優れた気密検査方法とその装
置を実現したものである。As is apparent from the above embodiments of the present invention, not only is the test gas injected into the battery case, but also the pressure is reduced to replace the existing air in the battery case with the test gas as much as possible. It realizes an excellent airtightness inspection method and device that facilitates the detection by the gas sensor and accurately grasps the poor airtightness when the battery case is depressurized, including when the storage battery is actually used. is there.
【図１】本発明の１実施例における気密検査方法の工程
と、電槽内水素濃度およびガスセンサーを接続した回路
の出力を示した説明図FIG. 1 is an explanatory diagram showing the steps of an airtightness inspection method according to one embodiment of the present invention and the output of a circuit connected to a hydrogen concentration in a battery case and a gas sensor.
【図２】同検査ガス濃度とガスセンサーの検出感度比を
示した説明図FIG. 2 is an explanatory diagram showing the test gas concentration and the detection sensitivity ratio of a gas sensor.
【図３】従来例の気密検査装置を示す斜視略図FIG. 3 is a schematic perspective view showing a conventional airtightness inspection apparatus.
【図４】同気密検査方法の工程とガスセンサーを接続し
た回路の出力を示した説明図FIG. 4 is an explanatory diagram showing the process of the airtightness inspection method and the output of a circuit connecting the gas sensor.
１ 電槽 １−ａ 素電池 ２ 蓋 ３ 排気孔 ４ ガス導入管 ６ 側壁ガス採集板 ８ 端子部ガス捕集箱 １０ ガスセンサー DESCRIPTION OF SYMBOLS 1 Battery case 1-a unit cell 2 Lid 3 Exhaust hole 4 Gas introduction pipe 6 Side wall gas collecting plate 8 Terminal gas collecting box 10 Gas sensor
───────────────────────────────────────────────────── フロントページの続き (72)発明者 坂田 安平 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 昭56−157832（ＪＰ，Ａ) 特開 昭58−135570（ＪＰ，Ａ) 実開 昭48−113982（ＪＰ，Ｕ) 特許3021545（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 10/00 - 10/34 H01M 2/00 - 2/08 G01M 3/00 - 3/40 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Anpei Sakata 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-56-1557832 (JP, A) JP-A-58- 135570 (JP, A) JP-A 48-113,982 (JP, U) Patent 3021545 (JP, B2) (58) Fields investigated (Int. Cl. 7 , DB name) H01M 10/00-10/34 H01M 2 / 00-2/08 G01M 3/00-3/40
Claims (4)
と、電槽内のガスを吸引する減圧工程と、電槽外に気密
不良箇処より漏洩する検査ガスを検知するガスセンサー
とを有する鉛蓄電池の気密検査方法。1. A pressurizing step of injecting a test gas into a battery case, a depressurizing step of sucking a gas in the battery case, and a gas sensor for detecting a test gas leaking from a poorly-sealed portion outside the battery case. A method for inspecting the airtightness of a lead storage battery having:
ガスを送入するガス導入管と、電槽内のガスを吸引する
吸引ポンプと、電槽と蓋との接合部分に密着する側壁ガ
ス採集板と、電極端子を挿通する端子部分に密着した端
子部ガス捕集箱と、上記側壁ガス採集板および端子部ガ
ス捕集箱に連通するガスセンサーとを具備する鉛蓄電池
の気密検査装置。2. A gas introduction pipe for feeding a test gas through an exhaust hole provided in a lid in the battery case, a suction pump for sucking gas in the battery case, and a contact portion between the battery case and the lid. An airtightness inspection of a lead-acid battery including a side wall gas collecting plate, a terminal portion gas collecting box in close contact with a terminal portion through which the electrode terminal is inserted, and a gas sensor communicating with the side wall gas collecting plate and the terminal portion gas collecting box. apparatus.
素ガスとの混合ガスとし、ガスセンサーを水素ガスの作
用により抵抗値を変化する水素検知用半導体とした請求
項１記載の鉛蓄電池の気密検査方法。3. The hermetic seal of a lead-acid battery according to claim 1, wherein the test gas is hydrogen gas or a mixed gas of hydrogen gas and nitrogen gas, and the gas sensor is a hydrogen detecting semiconductor whose resistance value changes by the action of hydrogen gas. Inspection methods.
素ガスとの混合ガスとし、ガスセンサーを水素ガスの作
用により抵抗値を変化する水素検知用半導体とした請求
項２記載の鉛蓄電池の気密検査装置。4. The hermetic seal of a lead-acid battery according to claim 2, wherein the test gas is hydrogen gas or a mixed gas of hydrogen gas and nitrogen gas, and the gas sensor is a hydrogen detecting semiconductor whose resistance value changes by the action of hydrogen gas. Inspection equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03174222A JP3120122B2 (en) | 1991-07-16 | 1991-07-16 | Airtightness inspection method and device for lead storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03174222A JP3120122B2 (en) | 1991-07-16 | 1991-07-16 | Airtightness inspection method and device for lead storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0521089A JPH0521089A (en) | 1993-01-29 |
| JP3120122B2 true JP3120122B2 (en) | 2000-12-25 |
Family
ID=15974862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03174222A Expired - Fee Related JP3120122B2 (en) | 1991-07-16 | 1991-07-16 | Airtightness inspection method and device for lead storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3120122B2 (en) |
Cited By (1)
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|---|---|---|---|---|
| JPH05327392A (en) * | 1992-05-20 | 1993-12-10 | Murata Mfg Co Ltd | Piezoelectric tuning fork type resonating parts |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05327392A (en) * | 1992-05-20 | 1993-12-10 | Murata Mfg Co Ltd | Piezoelectric tuning fork type resonating parts |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0521089A (en) | 1993-01-29 |
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