JPH05190164A - Sealed type alkaline storage battery - Google Patents
Sealed type alkaline storage batteryInfo
- Publication number
- JPH05190164A JPH05190164A JP4024526A JP2452692A JPH05190164A JP H05190164 A JPH05190164 A JP H05190164A JP 4024526 A JP4024526 A JP 4024526A JP 2452692 A JP2452692 A JP 2452692A JP H05190164 A JPH05190164 A JP H05190164A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- rubber
- deformability
- alkaline storage
- valve body
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
- H01M6/10—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with wound or folded electrodes
-
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、密閉形アルカリ蓄電池
に係わり、さらに詳しくはその防爆安全機構の改良に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed alkaline storage battery, and more particularly to improvement of its explosion-proof safety mechanism.
【０００２】[0002]
【従来の技術】一般に、密閉形アルカリ蓄電池では、電
池反応に伴う発生ガスによって電池の内圧が異常に上昇
した場合、電池ケースの破裂や封口蓋の飛び出しなどに
よる電池破壊が生じる危険性があることから、ある程度
の内圧に達した際に発生ガスを電池外部へ逃がして上記
破壊を未然に防止する、いわゆる防爆安全機構が必要と
される。2. Description of the Related Art Generally, in a sealed alkaline storage battery, if the internal pressure of the battery rises abnormally due to the gas generated by the battery reaction, there is a risk that the battery may break due to rupture of the battery case or popping of the sealing lid. Therefore, there is a need for a so-called explosion-proof safety mechanism that allows the generated gas to escape to the outside of the battery when the internal pressure reaches a certain level to prevent the above destruction.
【０００３】そして、そのような防爆安全機構として
は、たとえば、実開昭６４−３５６６５号公報に示され
ているように、封口蓋の弁室に単一組成のゴムで一体成
形した弾性弁体を圧縮装填し、この弾性弁体で封口板に
設けた弁孔を閉塞して密閉し、電池内部にガスが発生し
て電池の内圧が上昇した場合には、上記弾性弁体が変形
し、弁孔および排気孔との間に隙間をつくって、電池内
部のガスを電池外部に放出させて電池破壊を防止する構
成がとられている。As such an explosion-proof safety mechanism, for example, as shown in Japanese Utility Model Laid-Open No. 64-35665, an elastic valve body integrally formed with a rubber of a single composition in a valve chamber of a sealing lid. Is compressed and loaded, the valve hole provided in the sealing plate is closed and sealed with this elastic valve body, and when gas is generated inside the battery and the internal pressure of the battery rises, the elastic valve body is deformed, A structure is provided in which a gap is formed between the valve hole and the exhaust hole to release gas inside the battery to the outside of the battery and prevent the battery from being destroyed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
ような弾性弁体を用いた防爆安全機構では、弾性弁体の
厚みのバラツキや、弁室を形成する封口板や端子板の寸
法バラツキなどによって、作動圧力にある程度バラツキ
が発生するのを避けることができず、充分な安全性が確
保されていないのが現状である。However, in the explosion-proof safety mechanism using the elastic valve element as described above, due to variations in the thickness of the elastic valve element, variations in the size of the sealing plate and the terminal plate forming the valve chamber, etc. However, it is unavoidable that the operating pressure fluctuates to some extent and sufficient safety is not ensured.
【０００５】したがって、本発明は、従来の密閉形アル
カリ蓄電池が持っていた防爆安全機構の作動圧力がバラ
ツクという問題点を解決し、作動圧力のバラツキが少な
い安全性の優れた密閉形アルカリ蓄電池を提供すること
を目的とする。Therefore, the present invention solves the problem that the operating pressure of the explosion-proof safety mechanism of the conventional sealed alkaline storage battery varies, and provides a sealed alkaline storage battery of excellent safety with little variation in operating pressure. The purpose is to provide.
【０００６】[0006]
【課題を解決するための手段】本発明は、変形能の異な
る２種類のゴムを積層一体化することによって弾性弁体
を構成し、その弾性弁体の変形能の大きい側のゴムで弁
孔を閉塞することによって、上記目的を達成したもので
ある。SUMMARY OF THE INVENTION According to the present invention, an elastic valve body is constructed by laminating and integrating two kinds of rubbers having different deformability, and the rubber on the side of the elastic valve body having a large deformability has a valve hole. The above object is achieved by closing the.
【０００７】すなわち、弾性弁体を変形能の異なる２種
類のゴムを積層一体化して構成することにより、たと
え、部分的に押圧力の強いところがあったとしても、そ
の押圧力が変形能の大きいゴム中に均一に分散されて、
一点に集中しないので、弁室を形成する封口板と端子板
との平行度のバラツキや、弾性弁体の厚みのバラツキな
どがあったとしても、作動圧力のバラツキが少なくな
り、安定した作動圧力で防爆安全機構が作動するように
なり、高い安全性が確保されるようになる。That is, by constructing the elastic valve body by laminating and integrating two kinds of rubbers having different deformability, even if there is a portion where the pressing force is strong, the pressing force has a large deformability. Evenly dispersed in the rubber,
Because it does not concentrate on one point, even if there are variations in the parallelism between the sealing plate that forms the valve chamber and the terminal plate, and variations in the thickness of the elastic valve element, variations in the operating pressure are reduced, and a stable operating pressure is obtained. With this, the explosion-proof safety mechanism is activated and high safety is ensured.
【０００８】本発明において、弾性弁体を構成する変形
能の異なる２種類のゴムのうち、変形能の大きいゴムと
してはヤング率１×１０6 〜４×１０6 Ｎ／ｍ2 のもの
が好ましい。この変形能の大きいゴムのヤング率が４×
１０6 Ｎ／ｍ2 より大きくなると金属製の封口板に密着
しにくくなり、ヤング率が１×１０6 Ｎ／ｍ2 より小さ
くなると封口板に密着しすぎるため、防爆安全機構の作
動圧力が狂うおそれがある。In the present invention, among the two types of rubber having different deformability which constitute the elastic valve body, the rubber having a large deformability is preferably one having a Young's modulus of 1 × 10 6 to 4 × 10 6 N / m 2. .. The Young's modulus of this highly deformable rubber is 4 ×
If it exceeds 10 6 N / m 2 , it will be difficult to adhere to the metal sealing plate, and if Young's modulus is less than 1 × 10 6 N / m 2, it will adhere too much to the sealing plate, and the operating pressure of the explosion-proof safety mechanism will change. There is a risk.
【０００９】また、弾性弁体を構成する変形能の異なる
２種類のゴムのうち、変形能の小さいゴムとしてはヤン
グ率５×１０6 〜１０×１０6 Ｎ／ｍ2 のものが好まし
い。この変形能の小さいゴムのヤング率が１０×１０6
Ｎ／ｍ2 より大きくなると防爆安全機構の作動圧力が高
くなりすぎて安全性に問題が生じるようになり、ヤング
率が５×１０6 Ｎ／ｍ2 より小さくなると防爆安全機構
の作動圧力が低下しすぎてサイクル特性に問題が生じる
ようになる。Of the two types of rubber having different deformability which compose the elastic valve body, the rubber having a small deformability preferably has a Young's modulus of 5 × 10 6 to 10 × 10 6 N / m 2 . The Young's modulus of this rubber having a small deformability is 10 × 10 6
If it exceeds N / m 2, the operating pressure of the explosion-proof safety mechanism becomes too high, causing a safety problem, and if Young's modulus is less than 5 × 10 6 N / m 2 , the operating pressure of the explosion-proof safety mechanism decreases. If it is done too much, problems will occur in the cycle characteristics.
【００１０】[0010]
【実施例】つぎに、本発明を図示の実施例に基づいて具
体的に説明する。EXAMPLES Next, the present invention will be specifically described based on the illustrated examples.
【００１１】実施例１ 図１は本実施例１の密閉形アルカリ蓄電池を示す要部破
断正面図であり、この図１において、１は有底円筒状で
金属製の電池ケースであり、２は封口蓋で、３は環状ガ
スケットである。Embodiment 1 FIG. 1 is a fragmentary front view showing a sealed alkaline storage battery according to Embodiment 1 of the present invention. In FIG. 1, 1 is a cylindrical battery case with a bottom, and 2 is a metal battery case. A sealing lid 3 is an annular gasket.
【００１２】４は正極で、５は負極であり、６はセパレ
ータであって、正極４、負極５ともシート状をしてお
り、これらの正極４と負極５とはそれらの間にセパレー
タ６を介在させて渦巻状に巻回して渦巻状電極体にし
て、上記電池ケース１内に収容されている。Reference numeral 4 is a positive electrode, 5 is a negative electrode, 6 is a separator, and both the positive electrode 4 and the negative electrode 5 are sheet-shaped. The positive electrode 4 and the negative electrode 5 have a separator 6 therebetween. It is housed in the battery case 1 by being interposed and spirally wound to form a spiral electrode body.
【００１３】上記正極４には正極活物質として水酸化ニ
ッケルが用いられ、負極５には負極活物質として水素を
可逆的に吸蔵・放出できる水素吸蔵合金が用いられてい
る。そして、上記電池ケース１内には、水酸化カリウム
水溶液からなるアルカリ電解液が注入され、その開口部
に環状ガスケット３を介して封口蓋２が配置され、電池
ケース１の開口縁部をかしめることによって、電池ケー
ス１の開口部は封口蓋２と環状ガスケット３とで封口さ
れている。Nickel hydroxide is used as the positive electrode active material in the positive electrode 4 and a hydrogen storage alloy capable of reversibly storing and releasing hydrogen is used as the negative electrode active material in the negative electrode 5. Then, an alkaline electrolyte made of an aqueous solution of potassium hydroxide is injected into the battery case 1, and a sealing lid 2 is arranged in the opening of the battery case 1 via an annular gasket 3 to crimp the opening edge of the battery case 1. As a result, the opening of the battery case 1 is sealed by the sealing lid 2 and the annular gasket 3.
【００１４】封口蓋２は、封口板７と端子板８とでその
骨格部分が構成され、封口板７はその中央部が凹部にな
っていて、端子板８は中央部が凸部になっており、上記
封口板７と端子板８とは、それらの周縁部で溶接一体化
され、それらの中央部間には弁室９が形成されている。The sealing lid 2 has a skeleton portion composed of a sealing plate 7 and a terminal plate 8. The central portion of the sealing plate 7 is a concave portion and the central portion of the terminal plate 8 is a convex portion. The sealing plate 7 and the terminal plate 8 are welded and integrated at their peripheral portions, and a valve chamber 9 is formed between their central portions.
【００１５】上記封口板７には、その凹部のほぼ中心部
に電池内部と上記弁室９とに連通する弁孔１０が設けら
れ、上記端子板８には、その凸部の側面に電池外部と上
記弁室９とに連通する排気孔１１が設けられている。The sealing plate 7 is provided with a valve hole 10 which communicates with the inside of the battery and the valve chamber 9 at approximately the center of the recess, and the terminal plate 8 is provided with the outside of the battery on the side surface of the projection. And an exhaust hole 11 communicating with the valve chamber 9 is provided.
【００１６】そして、上記弁室９の内部には、弾性弁体
１２が圧縮装填されている。この弾性弁体１２は変形能
の大きいゴム１３と変形能の小さいゴム１４とを積層一
体化したものであり、変形能の小さいゴム１４が端子板
８側に配置し、変形能の大きいゴム１３が封口板７側に
配置して、この変形能の大きいゴム１３が前記弁孔１０
を閉塞して電池内部を密閉状態にしている。An elastic valve body 12 is compression-loaded inside the valve chamber 9. The elastic valve body 12 is formed by laminating a rubber 13 having a large deformability and a rubber 14 having a small deformability in a laminated manner. The rubber 14 having a small deformability is arranged on the terminal plate 8 side, and the rubber 13 having a large deformability is formed. Is disposed on the sealing plate 7 side, and the rubber 13 having a large deformability is used for the valve hole 10
Is closed to keep the inside of the battery airtight.
【００１７】上記変形能の大きいゴム１３としては、エ
チレン・プロピレン・ジエンモノマーゴム（ＥＰＤＭゴ
ム）製でヤング率２×１０6 Ｎ／ｍ2 のものが用いら
れ、変形能の小さいゴム１４としては、エチレン・プロ
ピレン・ジエンモノマーゴム（ＥＰＤＭゴム）製でヤン
グ率８×１０6 Ｎ／ｍ2 のものが用いられている。As the rubber 13 having a large deformability, an ethylene / propylene / diene monomer rubber (EPDM rubber) having a Young's modulus of 2 × 10 6 N / m 2 is used, and a rubber 14 having a small deformability is used. , Ethylene / propylene / diene monomer rubber (EPDM rubber) having a Young's modulus of 8 × 10 6 N / m 2 is used.
【００１８】上記弾性弁体１２は、弁室９に圧縮装填さ
れ、その変形能の大きいゴム１３が弁孔１０を閉塞して
電池内部を密閉状態に保っているが、より強い力がかか
った場合には変形可能であり、電池内部にガスが発生し
て電池の内圧が上昇した場合には、変形し、それによっ
て、弁孔１０および排気孔１１との間に隙間をつくり、
電池内部のガスを電池外部に放出して、高圧下での電池
破壊を未然に防止し得るように設計されている。The elastic valve body 12 is compressed and loaded in the valve chamber 9, and the rubber 13 having a large deformability closes the valve hole 10 to keep the inside of the battery in a sealed state, but a stronger force is applied. In this case, it is deformable, and when gas is generated inside the battery and the internal pressure of the battery rises, it deforms, thereby creating a gap between the valve hole 10 and the exhaust hole 11,
It is designed so that gas inside the battery can be released to the outside of the battery to prevent damage to the battery under high pressure.
【００１９】そして、ガス放出により電池の内圧が低下
した場合には、弾性弁体１２が元の状態に復帰して変形
能の大きいゴム１３が弁孔１０を閉塞して再び電池内部
を密閉状態に保つので、通常の状況下では、電池はガス
漏れや液漏れを生じることなく、本来の充放電機能を発
揮することができる。When the internal pressure of the battery is lowered due to the gas release, the elastic valve body 12 returns to its original state and the rubber 13 having a large deformability closes the valve hole 10 to seal the inside of the battery again. Therefore, under normal conditions, the battery can exert its original charge / discharge function without causing gas leakage or liquid leakage.
【００２０】正極４と封口蓋２の封口板７とは、リード
体１５で接続され、これによって封口蓋２の端子板８は
正極端子として作用する。そして、渦巻状電極体上には
絶縁材１６が配設され、この絶縁材１６によって封口蓋
２の封口板７と負極５との接触による内部短絡の発生が
防止されるように構成されている。The positive electrode 4 and the sealing plate 7 of the sealing lid 2 are connected by a lead body 15, whereby the terminal plate 8 of the sealing lid 2 acts as a positive electrode terminal. An insulating material 16 is disposed on the spiral electrode body, and the insulating material 16 is configured to prevent an internal short circuit due to contact between the sealing plate 7 of the sealing lid 2 and the negative electrode 5. ..
【００２１】この図１では図示していないが、負極５と
電池ケース１とは、電池ケース１の底部において、リー
ド体で接続され、それによって電池ケース１は負極端子
としての作用を兼ねるようになる。また、図示していな
いが、渦巻状電極体の下部にも絶縁材が配設され、電池
ケース１と正極４との接触による内部短絡の発生が防止
されるように構成されている。なお、本発明において、
電池ケース１内に収容される電池要素とは、前記の正極
４、負極５、セパレータ６、電解液などをはじめ、リー
ド体、絶縁材などを含んだものをいう。Although not shown in FIG. 1, the negative electrode 5 and the battery case 1 are connected by a lead body at the bottom of the battery case 1, so that the battery case 1 also functions as a negative electrode terminal. Become. Although not shown, an insulating material is also provided below the spiral electrode body so that an internal short circuit due to contact between the battery case 1 and the positive electrode 4 is prevented. In the present invention,
The battery element accommodated in the battery case 1 includes the positive electrode 4, the negative electrode 5, the separator 6, the electrolytic solution and the like, as well as the lead body and the insulating material.
【００２２】上記構成の密閉形アルカリ蓄電池において
は、電池内圧が低い状態では、弁室９に圧縮装填された
弾性弁体１２の変形能の大きいゴム１３が弁孔１０を閉
塞しているので、電池内部が密閉状態に保たれる。In the sealed alkaline storage battery having the above construction, the rubber 13 having a large deformability of the elastic valve body 12 compressed and loaded in the valve chamber 9 closes the valve hole 10 when the battery internal pressure is low. The inside of the battery is kept sealed.
【００２３】しかし、電池内部にガスが発生して電池内
圧が設定圧力（本実施例１では１５ｋｇ／ｃｍ2 に設定
されているが、一般には電池の種類に応じて１５〜２０
ｋｇ／ｃｍ2 程度に設定される）に達した場合には、弾
性弁体１２が変形して、弁孔１０と弾性弁体１２との間
に隙間が生じ、電池内部のガスは弁孔１０および排気孔
１１を通って電池外部に放出され、電池ケース１が破裂
したり、封口蓋２が飛び出すなどの電池破壊が未然に防
止される。However, gas is generated inside the battery and the internal pressure of the battery is set to a set pressure (15 kg / cm 2 in the first embodiment, but generally 15 to 20 depending on the type of battery).
(set to about kg / cm 2 ), the elastic valve body 12 is deformed and a gap is created between the valve hole 10 and the elastic valve body 12, and the gas inside the battery is blocked by the valve hole 10 Also, it is released to the outside of the battery through the exhaust hole 11, and the battery case 1 is prevented from being broken or the sealing lid 2 is popped out.
【００２４】そして、電池内部のガスを電池外部に放出
して内圧が低下すると、弾性弁体１２が元の状態に復帰
して変形能の大きいゴム１３が弁孔１０を閉塞するの
で、電池はガス漏れや液漏れを生じることなく、本来の
充放電機能を発揮することができる。When the gas inside the battery is discharged to the outside of the battery and the internal pressure decreases, the elastic valve body 12 returns to its original state and the rubber 13 having a large deformability closes the valve hole 10, so that the battery is The original charge / discharge function can be exhibited without causing gas leakage or liquid leakage.
【００２５】上記実施例１の電池と、変形能の大きいゴ
ム（つまり、エチレン・プロピレン・ジエンモノマーゴ
ム製でヤング率２×１０6 Ｎ／ｍ2 のゴム）だけで形成
した弁体を用いた電池（比較例１）および変形能の小さ
いゴム（つまり、エチレン・プロピレン・ジエンモノマ
ーゴム製でヤング率８×１０6 Ｎ／ｍ2 のゴム）だけで
形成した弁体を用いた電池（比較例２）を各１００個ず
つ作製して、防爆安全機構を作動させたときの防爆安全
機構の作動状況を調べて結果を表１に示す。A valve body formed only from the battery of Example 1 and a rubber having a large deformability (that is, a rubber made of ethylene / propylene / diene monomer rubber and having a Young's modulus of 2 × 10 6 N / m 2 ) was used. A battery (Comparative Example 1) and a battery using a valve body formed only from a rubber having a small deformability (that is, a rubber made of ethylene / propylene / diene monomer rubber and having a Young's modulus of 8 × 10 6 N / m 2 ) (Comparative Example). Table 2 shows the results of examining the operation status of the explosion-proof safety mechanism when 100 pieces of 2) were produced and the explosion-proof safety mechanism was operated.
【００２６】ただし、電池要素を収容した電池では、防
爆安全機構を作動させたときに、電池によっては電解液
や渦巻状電極体などの電池要素が飛び出す可能性がある
ので、電池要素を電池ケース内に収容せず、かつ電池ケ
ースの底部に圧縮空気送り込み用の栓を設けておき、電
池ケース内に圧縮空気を送り込んで防爆安全機構の作動
圧力を測定した。表１中の作動圧力の実測定値は１００
個の電池についての平均値である。However, in the battery containing the battery element, when the explosion-proof safety mechanism is activated, the battery element such as the electrolytic solution or the spiral electrode body may pop out depending on the battery. It was not housed inside, but a plug for sending compressed air was provided at the bottom of the battery case, and compressed air was sent into the battery case to measure the working pressure of the explosion-proof safety mechanism. The actual measured value of the working pressure in Table 1 is 100.
This is the average value for individual batteries.
【００２７】[0027]
【表１】 [Table 1]
【００２８】表１に示すように、実施例１は、比較例１
〜２に比べて、作動圧力のバラツキが少なかった。As shown in Table 1, Example 1 is Comparative Example 1
There was less variation in the operating pressure than in the cases of ~ 2.
【００２９】実施例１が変形能の大きいゴムのみで構成
される弁体を用いた比較例１より作動圧力のバラツキが
少なかったのは、封口板に適度に密着したゴム面を全面
的に一定圧力で押圧していることによるものである。Compared to Comparative Example 1 in which Example 1 used a valve body composed only of rubber having a large deformability, the variation in operating pressure was smaller because the rubber surface that was properly adhered to the sealing plate was uniform over the entire surface. This is because the pressure is applied.
【００３０】また、変形能の小さいゴムのみで構成され
る弁体を用いた比較例２の作動圧力のバラツキが大きか
ったのは、封口板と弁体との密着性に適正さを欠いてい
ることによるものである。Further, the large variation in the working pressure in Comparative Example 2 using the valve body composed only of rubber having a small deformability is due to the lack of proper adhesion between the sealing plate and the valve body. This is due to the fact.
【００３１】なお、上記実施例では、水酸化ニッケル−
水素吸蔵合金系の密閉形アルカリ蓄電池の場合について
説明したが、本発明はそれのみに限られるものではな
く、たとえば、ニッケル−カドミウム系の電池や、二酸
化マンガン−水素吸蔵合金系の電池など、電池内部にガ
スが発生する可能性のある密閉形アルカリ蓄電池のいず
れに対しても適用することができる。In the above embodiment, nickel hydroxide-
Although the case of a hydrogen storage alloy-based sealed alkaline storage battery has been described, the present invention is not limited thereto. For example, a nickel-cadmium-based battery or a manganese dioxide-hydrogen storage alloy-based battery such as a battery. It can be applied to any sealed alkaline storage battery in which gas may be generated inside.
【００３２】[0032]
【発明の効果】以上説明したように、本発明では、電池
内圧の異常上昇時に電池内部の発生ガスを電池外部に放
出させて電池破壊を防止する防爆安全機構として、変形
能の異なる２種類のゴムを積層一体化して構成した弾性
弁体を使用し、そのうちの変形能の大きいゴムで弁孔を
閉塞して密閉する構成を採用したので、防爆安全機構が
安定して作動し、高い安全性が確保できるようになっ
た。As described above, according to the present invention, two types of explosion-proof safety mechanisms having different deformability are provided as the explosion-proof safety mechanism for preventing the battery from being destroyed by releasing the gas generated inside the battery to the outside of the battery when the internal pressure of the battery rises abnormally. An elastic valve body made by laminating and integrating rubber is used, and the rubber with a large deformability is used to close the valve hole and seal it, so the explosion-proof safety mechanism operates stably and is highly safe. Can be secured.
【００３３】また、本発明によれば、電池内部のガスを
電池外部に放出して内圧が低下したときは、弾性弁体が
元の状態に復帰して、電池は再び密閉状態が維持される
ので、ガス漏れや液漏れを生じることなく、本来の充放
電機能を支障なく発揮することができる。Further, according to the present invention, when the gas inside the battery is discharged to the outside of the battery and the internal pressure drops, the elastic valve body returns to its original state and the battery is maintained in the sealed state again. Therefore, the original charge / discharge function can be exerted without any trouble without causing gas leakage or liquid leakage.
【図１】本発明の密閉形アルカリ蓄電池の一実施例を示
す要部破断正面図である。FIG. 1 is a fragmentary front view showing an embodiment of a sealed alkaline storage battery of the present invention.
１ 電池ケース ２ 封口蓋 ３ 環状ガスケット ４ 正極 ５ 負極 ６ セパレータ ７ 封口板 ８ 端子板 ９ 弁室 １０ 弁孔 １１ 排気孔 １２ 弾性弁体 １３ 変形能の大きいゴム １４ 変形能の小さいゴム 1 Battery Case 2 Sealing Lid 3 Annular Gasket 4 Positive Electrode 5 Negative Electrode 6 Separator 7 Sealing Plate 8 Terminal Plate 9 Valve Chamber 10 Valve Hole 11 Exhaust Hole 12 Elastic Valve Body 13 Rubber with High Deformability 14 Rubber with Low Deformability
Claims (2)
部を封口蓋２と環状ガスケット３とで封口してなる密閉
形アルカリ蓄電池において、上記封口蓋２は、封口板７
と端子板８を有し、封口板７の中央部と端子板８の中央
部との間には弁室９が設けられ、上記封口板７には電池
内部と上記弁室９とに連通する弁孔１０が設けられ、上
記端子板８には電池外部と上記弁室９とに連通する排気
孔１１が設けられ、上記弁室９には弾性弁体１２が圧縮
装填され、該弾性弁体１２は変形能の大きいゴム１３と
変形能の小さいゴム１４とを積層一体化してなり、変形
能の大きいゴム１３が上記弁孔１０を閉塞していること
を特徴とする密閉形アルカリ蓄電池。1. A sealed alkaline storage battery in which an opening of a battery case 1 accommodating a battery element is sealed by a sealing lid 2 and an annular gasket 3, wherein the sealing lid 2 is a sealing plate 7.
And a terminal plate 8, and a valve chamber 9 is provided between the central portion of the sealing plate 7 and the central portion of the terminal plate 8. The sealing plate 7 communicates with the inside of the battery and the valve chamber 9. A valve hole 10 is provided, an exhaust hole 11 communicating with the outside of the battery and the valve chamber 9 is provided in the terminal plate 8, and an elastic valve body 12 is compression-loaded in the valve chamber 9 and the elastic valve body is provided. A sealed alkaline storage battery 12 comprises a rubber 13 having a large deformability and a rubber 14 having a small deformability, which are laminated and integrated, and the rubber 13 having a large deformability closes the valve hole 10.
ゴム１３のヤング率が１×１０6 〜４×１０6 Ｎ／ｍ2
であり、変形能の小さいゴム１４のヤング率が５×１０
6 〜１０×１０6 Ｎ／ｍ2 であることを特徴とする請求
項１記載の密閉形アルカリ蓄電池。2. The Young's modulus of the rubber 13 having a large deformability that constitutes the elastic valve body 12 has a Young's modulus of 1 × 10 6 to 4 × 10 6 N / m 2.
And the Young's modulus of the rubber 14 having a small deformability is 5 × 10.
The sealed alkaline storage battery according to claim 1, wherein the sealed alkaline storage battery has a density of 6 to 10 × 10 6 N / m 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4024526A JPH05190164A (en) | 1992-01-14 | 1992-01-14 | Sealed type alkaline storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4024526A JPH05190164A (en) | 1992-01-14 | 1992-01-14 | Sealed type alkaline storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05190164A true JPH05190164A (en) | 1993-07-30 |
Family
ID=12140602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4024526A Pending JPH05190164A (en) | 1992-01-14 | 1992-01-14 | Sealed type alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05190164A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2819036A1 (en) * | 2001-01-04 | 2002-07-05 | Cit Alcatel | VALVE AND ELECTROCHEMICAL GENERATOR COMPRISING SUCH A VALVE |
| JP2006019171A (en) * | 2004-07-02 | 2006-01-19 | Toyota Motor Corp | Nickel-hydrogen storage battery |
| WO2006126446A1 (en) * | 2005-05-23 | 2006-11-30 | Matsushita Electric Industrial Co., Ltd. | Safety mechanism for laminate battery |
| CN112787004A (en) * | 2021-03-12 | 2021-05-11 | 惠州市超聚电池有限公司 | Steel shell button cell packaging structure and steel shell button cell |
-
1992
- 1992-01-14 JP JP4024526A patent/JPH05190164A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2819036A1 (en) * | 2001-01-04 | 2002-07-05 | Cit Alcatel | VALVE AND ELECTROCHEMICAL GENERATOR COMPRISING SUCH A VALVE |
| EP1221728A1 (en) * | 2001-01-04 | 2002-07-10 | Alcatel | A resealable valve and electrochemical generator comprising said valve |
| US6713208B2 (en) | 2001-01-04 | 2004-03-30 | Alcatel | Vent valve and a storage cell including it |
| JP2006019171A (en) * | 2004-07-02 | 2006-01-19 | Toyota Motor Corp | Nickel-hydrogen storage battery |
| WO2006126446A1 (en) * | 2005-05-23 | 2006-11-30 | Matsushita Electric Industrial Co., Ltd. | Safety mechanism for laminate battery |
| JP2007157678A (en) * | 2005-05-23 | 2007-06-21 | Matsushita Electric Ind Co Ltd | Safety mechanism for laminate battery |
| US8057933B2 (en) | 2005-05-23 | 2011-11-15 | Panasonic Corporation | Safety mechanism for laminate battery |
| CN112787004A (en) * | 2021-03-12 | 2021-05-11 | 惠州市超聚电池有限公司 | Steel shell button cell packaging structure and steel shell button cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS62147652A (en) | Sealed lead-acid battery | |
| US4822377A (en) | Method for sealing an electrochemical cell employing an improved reinforced cover assembly | |
| JP3619634B2 (en) | Sealed storage battery with safety valve | |
| US4298662A (en) | Resealable vent valve for containers such as batteries | |
| JPH06290767A (en) | Chemical battery with safety mechanism | |
| JP4080131B2 (en) | Manganese battery | |
| JPH05190164A (en) | Sealed type alkaline storage battery | |
| JPH1140468A (en) | Flectrochemical element | |
| JP3209438B2 (en) | Sealed alkaline storage battery | |
| JP5114004B2 (en) | Cylindrical battery | |
| JPH05205716A (en) | Sealed alkaline storage battery | |
| JP2746653B2 (en) | Sealed alkaline storage battery | |
| JPH11111244A (en) | Sealed storage battery | |
| JP2000067841A (en) | Sealed battery case | |
| JPH05325929A (en) | Alkaline storage battery | |
| JP2001076701A (en) | Tubular alkaline battery | |
| JP2004063254A (en) | Sealed type battery | |
| JPH08153508A (en) | Explosionproof battery | |
| JPH02199768A (en) | Sealed alkaline storage battery | |
| JP3235797B2 (en) | Cylindrical alkaline secondary battery | |
| JP3596918B2 (en) | Explosion-proof battery | |
| CA1164045A (en) | Resealable vent valve for containers such as batteries | |
| JPH0927310A (en) | Sealed storage battery | |
| JP2005026160A (en) | Sealed type battery | |
| JP2004071446A (en) | Alkaline battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20010221 |