JP2746653B2 - Sealed alkaline storage battery - Google Patents
Sealed alkaline storage batteryInfo
- Publication number
- JP2746653B2 JP2746653B2 JP1125997A JP12599789A JP2746653B2 JP 2746653 B2 JP2746653 B2 JP 2746653B2 JP 1125997 A JP1125997 A JP 1125997A JP 12599789 A JP12599789 A JP 12599789A JP 2746653 B2 JP2746653 B2 JP 2746653B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- storage battery
- alkaline storage
- sealing lid
- sealed alkaline
- 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 - Lifetime
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
-
- 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
- H01M50/333—Spring-loaded vent valves
-
- 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
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は防爆安全機構を備えた密閉型アルカリ蓄電
池に関する。The present invention relates to a sealed alkaline storage battery provided with an explosion-proof safety mechanism.
一般的に、密閉型アルカリ蓄電池にあつては、電池反
応に伴う発生ガスによつて内圧が異常に上昇した場合、
金属外装筒の破裂や封口蓋の飛び出しなどの電池破壊を
生じる危険性があることから、ある程度の内圧に達した
際に発生ガスを外部へ逃して上記破壊を未然に防止する
防爆安全機構が必要とされている。Generally, for sealed alkaline storage batteries, when the internal pressure rises abnormally due to the gas generated by the battery reaction,
An explosion-proof safety mechanism is required to prevent the above-mentioned destruction by escaping the generated gas to the outside when the internal pressure reaches a certain level, since there is a risk of battery destruction such as rupture of the metal outer cylinder or popping out of the sealing lid. It has been.
そこで、従来にあつては、端子板を兼ねる封口蓋に内
圧が一定値以上に達した際に排気孔を開放する安全弁を
設け、この封口蓋を金属外装筒の開口部に環状ガスケツ
トを介して嵌着した構造が採用されている。Therefore, conventionally, a safety valve for opening the exhaust hole when the internal pressure reaches a certain value or more is provided in the sealing lid also serving as a terminal plate, and the sealing lid is connected to the opening of the metal outer cylinder via an annular gasket. A fitted structure is employed.
しかしながら、上記の従来構造では、封口蓋の嵌着部
分から漏液を生じやすいという難点がある上、安全弁が
事故や誤使用その他の要因による急激な内圧上昇には相
応できないことから、電池破壊の危険性は安全には解消
されないという問題があつた。However, in the above-mentioned conventional structure, there is a drawback that liquid leaks easily from the fitting portion of the sealing lid, and the safety valve cannot respond to a sudden increase in internal pressure due to accidents, misuse, and other factors. There was a problem that the danger could not be solved safely.
この発明は、上述の事情に鑑み、常時は可逆的に機能
してかつ急激な内圧上昇にも対処できる防爆安全機構を
備えるとともに、漏液を生じない密閉型アルカリ蓄電池
を提供することを目的としている。The present invention has been made in view of the above circumstances, and has an object to provide a sealed alkaline storage battery that is provided with an explosion-proof safety mechanism that always functions reversibly and can cope with a sudden increase in internal pressure and that does not cause liquid leakage. I have.
この発明は、上記目的を達成する手段として、発電要
素を収納した金属外装筒の開口部が端子板を兼ねる封口
蓋にて密閉された密閉型アルカリ蓄電池において、上記
封口蓋は可逆性安全弁を備えた端子部材の周縁部と環状
保持板の開口周縁部とが熱溶融性樹脂にて接着一体化さ
れてなり、この封口蓋が環状保持板の外周縁部で上記金
属外装筒の開口部に溶接固定されてなることを特徴とす
る構成を採用したものである。The present invention provides, as a means for achieving the above object, a sealed alkaline storage battery in which an opening of a metal outer casing containing a power generation element is sealed with a sealing lid also serving as a terminal plate, wherein the sealing lid includes a reversible safety valve. The peripheral edge of the terminal member and the peripheral edge of the opening of the annular holding plate are bonded and integrated with a hot-melt resin, and this sealing lid is welded to the opening of the metal outer cylinder at the outer peripheral edge of the annular holding plate. This adopts a configuration characterized by being fixed.
また、この発明においては、上記の端子部材に電池内
部へ透通する弁孔と外部へ透通する排気孔を有する弁室
が形成され、この弁室内にスプリングとその付勢を受け
て上記弁孔を常時閉鎖する弁体とが装填されてなる構成
を好適態様としている。Further, in the present invention, a valve chamber having a valve hole penetrating into the battery and an exhaust hole penetrating to the outside is formed in the terminal member, and a spring and the urging thereof are received in the valve chamber to receive the valve. A preferred embodiment has a configuration in which a valve body that always closes the hole is loaded.
封口蓋が従来のような環状ガスケツトを介した嵌着で
はなく溶接によつて金属外装筒の開口部に固着されてい
ることから、この部分から漏液する恐れは全くなく、封
口蓋を構成する端子部材と環状保持板とは熱溶融性樹脂
にて接着されているため、常時においては上記接着部分
からのガス漏れや液漏れもない。しかるに、電池の内圧
が徐々に上昇して一定値に達すると、封口蓋の端子部材
に設けてある可逆性安全弁が開放し、内部のガスが外部
へ放出され、この放出によつて内圧が一定値以下になれ
ば上記安全弁が閉止して電池は密閉状態に戻る。Since the sealing lid is fixed to the opening of the metal outer cylinder by welding instead of fitting through a conventional annular gasket, there is no danger of liquid leakage from this part, and the sealing lid is constituted. Since the terminal member and the ring-shaped holding plate are bonded with a heat-meltable resin, there is no gas or liquid leakage from the bonded portion at all times. However, when the internal pressure of the battery gradually rises and reaches a certain value, the reversible safety valve provided on the terminal member of the sealing lid is opened, and the internal gas is released to the outside. When the value falls below the value, the safety valve closes and the battery returns to the sealed state.
一方、事故や誤使用その他の要因で突発的な異常反応
を生じて急激に内圧が上昇した際には、上記異常反応に
伴う発熱によつて封口蓋の端子部材と環状保持板とを接
着している熱溶融性樹脂が軟化ないし溶融し、これによ
つて緩んだ接着部の間隙から内部のガスが一挙に外部へ
放出される。したがつて、金属外装筒の破壊や封口蓋の
飛び出しなどの危険な電池破壊が未然に防止される。な
お、この作動圧力は使用する熱溶融性樹脂の種類と接着
面積によつて任意に設定できる。On the other hand, when the internal pressure suddenly rises due to a sudden abnormal reaction caused by an accident, misuse, or other factors, the terminal member of the sealing lid and the annular holding plate are adhered to each other by the heat generated by the abnormal reaction. The hot-melt resin softens or melts, whereby the gas inside is released from the gap between the loosened joints to the outside at once. Therefore, dangerous battery destruction such as destruction of the metal outer cylinder and protrusion of the sealing lid is prevented. The operating pressure can be arbitrarily set depending on the type of the hot-melt resin used and the bonding area.
上記の熱溶融性樹脂としては融点80〜120℃程度のも
のが好適であり、この融点があまりに低すぎては接着部
の密封信頼性が低下し、逆に高すぎては急激な内圧上昇
に迅速に対応できない恐れがある。なお、この融点およ
び接着性の点から、とくに好ましい熱溶融性樹脂として
ポリアミド系樹脂が挙げられる。As the above-mentioned heat-fusible resin, those having a melting point of about 80 to 120 ° C. are suitable, and if this melting point is too low, the sealing reliability of the bonded portion is reduced. It may not be possible to respond quickly. From the viewpoint of the melting point and the adhesiveness, a polyamide resin is particularly preferred as the heat-fusible resin.
可逆性安全弁としては、所定の電池内圧を境としてガ
ス放出流露を低圧側で閉止するとともに高圧側で開放す
るように可逆的作動するものであればよく、種々の構造
を採用できる。とくに、端子部材に電池内部へ透通する
弁孔と外部へ透通する排気孔を有する弁室を設け、この
弁室内にスプリングとその付勢を受けて上記弁孔を常時
閉鎖する弁体を装填した構成によれば、電池の内圧が緩
やかに上昇して一定値に達すると、その圧力で弁体がス
プリングの付勢に抗して僅かに持ち上がつて間隙を生
じ、この間隙を通つて内部のガスが排気孔から外部へ放
出され、この放出によつて内圧がスプリングの押圧力以
下になれば再び弁孔が封止されることになり、可逆的作
動の信頼性が高く、かつ作動圧力をスプリングの強さに
よつて一定値に設定できるという利点がある。The reversible safety valve may be any valve that operates reversibly so as to close the gas release flow on the low pressure side and open it on the high pressure side at a predetermined internal pressure of the battery. In particular, a terminal member is provided with a valve chamber having a valve hole that penetrates into the battery and an exhaust hole that penetrates to the outside, and a spring and a valve body that receives the bias of the spring and constantly closes the valve hole are provided in the valve chamber. According to the loaded configuration, when the internal pressure of the battery gradually rises and reaches a certain value, the valve body lifts slightly against the bias of the spring at that pressure to form a gap. Then, the gas inside is released from the exhaust hole to the outside, and if the internal pressure becomes lower than the pressing force of the spring due to this release, the valve hole is sealed again, and the reliability of the reversible operation is high, and There is the advantage that the operating pressure can be set to a constant value depending on the strength of the spring.
以下、この発明を図示実施例に基づいて具体的に説明
する。第１図は第１実施例の密閉型アルカリ蓄電池Ａの
要部破断正面図である。図において、１は負極缶をなす
有底円筒状の金属外装筒、２は端子部材３と環状保持板
４とで構成された正極端子板をなす封口蓋であり、金属
外装筒１の内部にはともに帯状である正極５と負極６と
を多孔性材料からなるセパレータ７を介して渦巻状に捲
回して水酸化カリウム水溶液などのアルカリ電解液を含
浸保持させた発電要素が収容されている。８は端子部材
３と正極５とを接続するリード片、９は発電要素上に配
置された絶縁板である。Hereinafter, the present invention will be specifically described based on illustrated embodiments. FIG. 1 is a fragmentary front view of a principal part of a sealed alkaline storage battery A of a first embodiment. In the drawing, reference numeral 1 denotes a bottomed cylindrical metal outer cylinder forming a negative electrode can, and 2 denotes a sealing lid forming a positive electrode terminal plate constituted by a terminal member 3 and an annular holding plate 4. A power generating element in which a positive electrode 5 and a negative electrode 6, both of which are band-shaped, are spirally wound through a separator 7 made of a porous material and impregnated with an alkaline electrolyte such as an aqueous potassium hydroxide solution is accommodated therein. 8 is a lead piece for connecting the terminal member 3 and the positive electrode 5, and 9 is an insulating plate arranged on the power generating element.
端子部材３は、ともに皿状である金属製の内板10aと
外板10bとを凹側が対向する形で重ね合わせて周縁部で
溶接一体化したもので、両板10a,10bの中央部間に弁室1
1が構成されている。この弁室11は、内板10a側に電池内
部へ透通する円形の弁孔12を有するとともに外板10b側
に外部へ透通する排気孔13を有し、その内部には、金属
製支持板14aの内側にゴムなどからなる弾性板14bを接着
一体化した弁体14とこれを弁孔12側へ押圧するコイルス
プリング15とが装填されている。The terminal member 3 is formed by laminating an inner plate 10a and an outer plate 10b made of a metal, both of which are dish-shaped, with the concave side facing each other and welding and integrating them at the peripheral edges. Valve room 1
1 is configured. The valve chamber 11 has a circular valve hole 12 penetrating the inside of the battery on the side of the inner plate 10a, and an exhaust hole 13 penetrating the outside on the side of the outer plate 10b. A valve body 14 in which an elastic plate 14b made of rubber or the like is bonded and integrated inside a plate 14a, and a coil spring 15 for pressing the valve body 14 toward the valve hole 12 are loaded.
また、端子部材３と環状保持板４とは、前者３の鍔状
の周縁部3aが後者４の開口4a周縁上面側に配置するよう
に、前者３の下方凸部を上方から該開口4aに嵌入し、両
者3,4の対向面間をポリアミド系熱溶融性樹脂16にて接
着することにより、一体の封口蓋２を構成している。こ
の封口蓋２は環状保持板４の立ち上げ状の外周縁部4bに
おいて金属外装筒１の開口部に全周にわたり溶接固定さ
れている。この溶接には、溶接部以外への熱的悪影響を
避けるために、レーザ溶接または電子ビーム溶接が採用
されている。Further, the terminal member 3 and the annular holding plate 4 are arranged such that the lower protruding portion of the former 3 is inserted into the opening 4a from above so that the flange-shaped peripheral portion 3a of the former 3 is disposed on the upper peripheral side of the opening 4a of the latter 4. The integrated sealing lid 2 is formed by fitting and bonding the opposing surfaces of the both 3 and 4 with a polyamide-based hot-melt resin 16. This sealing lid 2 is welded and fixed to the opening of the metal outer casing 1 at the rising outer peripheral edge 4b of the annular holding plate 4 over the entire circumference. For this welding, laser welding or electron beam welding is employed in order to avoid adverse thermal effects on portions other than the welded portion.
第２図は第２実施例の密閉型アルカリ蓄電池Ｂの上部
の要部破断正面図である。この電池Ｂでは、封口蓋２
は、端子部材３の上方凸部を環状保持板４の閉口4aに下
方から嵌入し、その周縁部3a上面と該保持板４の下面と
の間より開口4aの間隙にわたつてポリアミド系熱溶融性
樹脂16にて接着することによつて形成されているが、他
の構成は第１実施例の電池Ａと同様構成である。FIG. 2 is a fragmentary front view of the upper part of the sealed alkaline storage battery B of the second embodiment. In this battery B, the sealing lid 2
Is formed by fitting the upper convex portion of the terminal member 3 into the opening 4a of the annular holding plate 4 from below, and extending between the upper surface of the peripheral portion 3a and the lower surface of the holding plate 4 to the gap of the opening 4a. It is formed by bonding with a conductive resin 16, but other configurations are the same as those of the battery A of the first embodiment.
上記第１および第２実施例の電池A,Bでは、端子部材
３の内外板10a,10bの周縁部を溶接しているが、両板10
a,10bの一方の周縁部で他方の周縁部を挟むようにかし
めて一体化することも可能である。In the batteries A and B of the first and second embodiments, the peripheral portions of the inner and outer plates 10a and 10b of the terminal member 3 are welded.
It is also possible to integrate by caulking one peripheral edge of a and 10b so as to sandwich the other peripheral edge.
第３図は第３実施例の密閉型アルカリ蓄電池Ｃの上部
の要部破断正面図である。この電池Ｃでは、端子部材３
がその内外板10a,10bの周縁部で環状保持板４の開口4a
周縁部を両側から挟むように配置し、この鋏み付け部分
全体がポリアミド系熱溶融性樹脂16にて接着されている
が、他の構成は第１および第２実施例の電池A,Bと同様
構成である。FIG. 3 is a fragmentary front view of the upper part of the sealed alkaline storage battery C of the third embodiment. In this battery C, the terminal member 3
Are the openings 4a of the annular holding plate 4 at the peripheral edges of the inner and outer plates 10a and 10b.
The peripheral portion is disposed so as to be sandwiched from both sides, and the entire scissors-clamped portion is adhered with a polyamide-based hot-melt resin 16, but other configurations are the same as those of the batteries A and B of the first and second embodiments. Configuration.
なお、正極５および負極６にはアルカリ蓄電池の種類
に応じた種々の電極材料およびその組み合わせが選択さ
れる。その一例を挙げれば、正極５に水酸化ニツケルを
用いて、負極６に水素を可逆的に吸蔵・放出しうる水素
吸蔵合金を用いた組み合わせがある。Various electrode materials and combinations thereof are selected for the positive electrode 5 and the negative electrode 6 according to the type of the alkaline storage battery. As an example, there is a combination using a nickel hydroxide for the positive electrode 5 and a hydrogen storage alloy capable of reversibly storing and releasing hydrogen for the negative electrode 6.
上記構成の密閉型アルカリ蓄電池Ａ〜Ｃにあつては、
充放電中ならびに不使用下において、内圧の低い常態で
は弁孔12が弁体14で封鎖されてガス漏れおよび液漏れの
ない密閉状態に保持されるが、電池反応に伴う発生ガス
によつて内圧が徐々に上昇してコイルスプリング15の弾
圧力に抜き勝つた時点で、弁体14が僅かに持ち上がり、
内部のガスが該弁体14と弁孔12の間隙より弁体14の周面
と弁室11の内面との間を通つて排気孔13から外部へ放出
される。このガス放出によつて内圧が低下すると、直ち
に弁体14が弁孔12を寒ぎ、内部は再び密閉状態に復帰す
る。この弁体14の開閉作動は、内圧上昇が急激でない限
り、内圧が一定値に達する都度に繰り返される。したが
つて、内圧の一定値以上の上昇は確実に阻止される。With respect to the sealed alkaline storage batteries A to C having the above configuration,
During charging and discharging and during non-use, the valve hole 12 is closed by the valve element 14 in a normal state where the internal pressure is low, and the valve hole 12 is kept in a sealed state without gas leakage and liquid leakage. Gradually rises and overcomes the elastic pressure of the coil spring 15, when the valve body 14 is slightly lifted,
The gas inside is discharged from the exhaust hole 13 to the outside through the gap between the valve body 14 and the valve hole 12, passing between the peripheral surface of the valve body 14 and the inner surface of the valve chamber 11. As soon as the internal pressure decreases due to this gas release, the valve element 14 cools the valve hole 12 and the inside returns to the sealed state again. This opening and closing operation of the valve element 14 is repeated every time the internal pressure reaches a constant value, unless the internal pressure rises sharply. Therefore, an increase in the internal pressure above a certain value is reliably prevented.
一方、事故や誤使用その他の要因で突発的に電池反応
が急激に進行し、これに伴う大量の発生ガスにて内圧が
一気に上昇した場合は、上記の急激な電池反応に伴う発
熱によつて封口蓋２の端子部材３と環状保持板４とを接
着しているポリアミド系熱溶融性樹脂16が軟化ないし溶
融し、これによつて接着部が緩んで間隙を生じ、この間
隙より発生ガスが瞬時に排気孔13から外部へ放散され
る。したがって、このような突発事態においても、金属
外装筒１が破裂したり、封口蓋２が吹き飛ぶといつた危
険は未然に防止される。On the other hand, if the battery reaction suddenly progresses suddenly due to an accident, misuse, or other factors, and the internal pressure rises at once with a large amount of generated gas, the above-mentioned heat generated by the rapid battery reaction will cause The polyamide-based hot-melt resin 16 that bonds the terminal member 3 of the sealing lid 2 and the annular holding plate 4 is softened or melted, whereby the bonded portion is loosened to form a gap, from which gas is generated. It is instantaneously radiated from the exhaust hole 13 to the outside. Therefore, even in such a sudden situation, the danger that the metal outer casing 1 ruptures or the sealing lid 2 blows out is prevented beforehand.
なお、前記実施例では封口蓋２の内外板10a,10bをと
もに皿状としているが、一方のみ、とくに外板10bのみ
を皿状として弁室11を構成することもできる。In the above embodiment, both the inner and outer plates 10a and 10b of the sealing lid 2 are dish-shaped. However, the valve chamber 11 may be formed by making only one of the plates, especially the outer plate 10b, dish-shaped.
さらに、この発明は、例示したような渦巻型の発電要
素を有するものに限らず、電池要素の各々の形態および
収納形態が種々異なる密閉型アルカリ蓄電池にも同様に
適用可能である。Furthermore, the present invention is not limited to the one having the spiral-type power generating element as exemplified above, but is similarly applicable to a sealed alkaline storage battery in which each form and storage form of the battery element are variously different.
この発明の密閉型アルカリ蓄電池は、内圧の異常上昇
時に発生ガスを外部へ逃がして電池破壊を防ぐ防爆安全
機構として、通常の急激でない内圧上昇に対応する可逆
的機構と、突発的事態による急激な内圧上昇に相応する
不可逆的機構とを兼備していることから、安全性に極め
てすぐれるとともに、前者の可逆的機構の作動後には元
の密閉状態に復帰す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できる。The sealed alkaline storage battery of the present invention has an explosion-proof safety mechanism that prevents generated gas from escaping to the outside when the internal pressure is abnormally increased and prevents the battery from being destroyed. Since it has an irreversible mechanism corresponding to the rise of internal pressure, it is extremely excellent in safety, and it returns to the original sealed state after the operation of the former reversible mechanism, causing gas leakage and liquid leakage The original charge / discharge function can be exhibited without any trouble.
しかも、この発明の蓄電池では、上記の不可逆的な防
爆安全機構が封口蓋の端子部材と環状保持板との熱溶融
性樹脂による接着部にて構成され、急激な電池反応に伴
う発熱にて上記樹脂が軟化ないし溶融して該接着部に内
部のガスを放出させる間隙を生じるものであるため、高
い作動信頼性が得られるとともに、封口蓋自体は環状保
持板の外周縁部で金属外装筒の開口部に溶接にて固着さ
れていることから、従来の環状ガスケツトを介した封口
蓋の嵌着構造のように漏液を生じる恐れは皆無であると
いうすぐれた特徴がある。Moreover, in the storage battery of the present invention, the above-mentioned irreversible explosion-proof safety mechanism is constituted by a bonding portion made of a hot-melt resin between the terminal member of the sealing lid and the annular holding plate. Since the resin is softened or melted to form a gap for releasing the internal gas to the bonding portion, high operation reliability is obtained, and the sealing lid itself is formed of the metal outer cylinder at the outer peripheral edge of the annular holding plate. Since it is fixed to the opening by welding, there is an excellent feature that there is no danger of liquid leakage unlike a conventional fitting structure of a sealing lid via an annular gasket.
また、この発明において、端子部材に電池内部へ透通
する弁孔と外部へ透通する排気孔を有する弁室が形成さ
れ、この弁室内にスプリングとその付勢を受けて上記弁
孔を常時閉鎖する弁体とが装填されてなる構成を採用す
れば、可逆的安全機構が極めて簡素な構造となり、かつ
その作動圧力が安定して経時的な密封性低下も生じにく
く耐久性にすぐれたものとなる。Further, in the present invention, a valve chamber having a valve hole penetrating the inside of the battery and an exhaust hole penetrating the outside is formed in the terminal member, and the valve hole is constantly opened by receiving a spring and its bias in the valve chamber. The reversible safety mechanism has a very simple structure if it is equipped with a valve body that closes, and its operating pressure is stable, and the sealing performance does not easily decrease over time. Becomes
第１図はこの発明に係る第１実施例の密閉型アルカリ蓄
電池全体の要部破断正面図、第２図は同第２実施例の同
電池上部の要部破断正面図、第３図は同第３実施例の同
電池上部の要部破断正面図である。 A,B,C……密閉型アルカリ蓄電池、１……金属外装筒、
２……封口蓋、３……端子部材、3a……周縁部、４……
環状保持板、4a……開口、4b……外周縁部、５……正極
（発電要素）、６……負極（発電要素）、11……弁室、
12……弁孔、13……排気孔、14……弁体、15……コイル
スプリング、16……ポリアミド系溶融性樹脂FIG. 1 is a fragmentary front view of an essential part of the whole sealed alkaline storage battery of the first embodiment according to the present invention, FIG. 2 is a fragmentary front view of an upper part of the battery of the second embodiment, and FIG. It is principal part fracture front view of the battery upper part of 3rd Example. A, B, C ... sealed alkaline storage battery, 1 ... metal outer cylinder
2. Sealing lid, 3 ... Terminal member, 3a ... Peripheral part, 4 ...
Annular holding plate, 4a opening, 4b outer peripheral edge, 5 positive electrode (power generation element), 6 negative electrode (power generation element), 11 valve chamber,
12 ... Valve hole, 13 ... Exhaust hole, 14 ... Valve, 15 ... Coil spring, 16 ... Polyamide-based meltable resin
Claims (2)
端子板を兼ねる封口蓋にて密閉された密閉型アルカリ蓄
電池において、上記封口蓋は可逆性安全弁を備えた端子
部材の周縁部と環状保持板の開口周縁部とが熱溶融性樹
脂にて接着一体化されてなり、この封口蓋が環状保持板
の外周縁部で上記金属外装筒の開口部に溶接固定されて
なることを特徴とする密閉型アルカリ蓄電池。1. A sealed alkaline storage battery in which an opening of a metal outer casing accommodating a power generating element is sealed by a sealing lid also serving as a terminal plate, wherein the sealing lid is provided on the periphery of a terminal member provided with a reversible safety valve. The peripheral edge of the opening of the annular holding plate is bonded and integrated with a heat-fusible resin, and the sealing lid is welded and fixed to the opening of the metal outer cylinder at the outer peripheral edge of the annular holding plate. Sealed alkaline storage battery.
へ透通する排気孔を有する弁室が形成され、この弁室内
にスプリングとその付勢を受けて上記弁孔を常時閉鎖す
る弁体とが装填されてなる請求項（１）に記載の密閉型
アルカリ蓄電池。2. A valve chamber having a valve hole penetrating into the battery and an exhaust hole penetrating to the outside is formed in the terminal member, and the valve hole is normally closed by receiving a spring and bias in the valve chamber. The sealed alkaline storage battery according to claim 1, wherein the sealed alkaline storage battery is provided with a valve element to be mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1125997A JP2746653B2 (en) | 1989-05-18 | 1989-05-18 | Sealed alkaline storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1125997A JP2746653B2 (en) | 1989-05-18 | 1989-05-18 | Sealed alkaline storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02304861A JPH02304861A (en) | 1990-12-18 |
| JP2746653B2 true JP2746653B2 (en) | 1998-05-06 |
Family
ID=14924167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1125997A Expired - Lifetime JP2746653B2 (en) | 1989-05-18 | 1989-05-18 | Sealed alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2746653B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970004137A (en) * | 1995-06-29 | 1997-01-29 | 김광호 | Nickel Zinc Secondary Battery and Manufacturing Method Thereof |
| KR20060037607A (en) * | 2004-10-28 | 2006-05-03 | 삼성에스디아이 주식회사 | Secondary battery and safety device using the same |
| CN106601960B (en) * | 2016-12-30 | 2023-10-13 | 重庆市紫建电子有限公司 | Button cell and manufacturing method thereof |
| WO2022255376A1 (en) * | 2021-06-03 | 2022-12-08 | 株式会社パイオラックス | Pressure relief valve for power storage device |
-
1989
- 1989-05-18 JP JP1125997A patent/JP2746653B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02304861A (en) | 1990-12-18 |
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