JP2965650B2 - Cylindrical alkaline storage battery - Google Patents
Cylindrical alkaline storage batteryInfo
- Publication number
- JP2965650B2 JP2965650B2 JP2253496A JP25349690A JP2965650B2 JP 2965650 B2 JP2965650 B2 JP 2965650B2 JP 2253496 A JP2253496 A JP 2253496A JP 25349690 A JP25349690 A JP 25349690A JP 2965650 B2 JP2965650 B2 JP 2965650B2
- Authority
- JP
- Japan
- Prior art keywords
- terminal plate
- battery
- sealing plate
- sealing
- battery container
- 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
-
- 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
- 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
-
- 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)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、筒形アルカリ蓄電池に係わり、さらに詳し
くはその封口蓋の改良に関する。Description: TECHNICAL FIELD The present invention relates to a cylindrical alkaline storage battery, and more particularly to an improvement in a sealing lid thereof.
蓄電池としては、ニッケル−カドミウム電池などのア
ルカリ蓄電池が最もよく用いられている。Alkaline storage batteries such as nickel-cadmium batteries are most often used as storage batteries.
このアルカリ蓄電池では、正極端子を兼ねる封口蓋を
封口板と端子板との間に形成された空間内に弁体と金属
ばねを収容するか、あるいは上記空間内に弁体のみを収
容することによって構成し、電池内部にガスが発生して
電池の内部圧力が異常上昇したときには、上記封口蓋を
通じて、電池内部のガスを電池外部に放出させることに
より、電池の高圧下での破裂を防止できるようにした安
全弁構造が採用されている（たとえば、実公昭47−3954
2号公報）。In this alkaline storage battery, the sealing lid also serving as the positive electrode terminal is housed in a space formed between the sealing plate and the terminal plate by housing the valve body and the metal spring, or by housing only the valve body in the space. When gas is generated inside the battery and the internal pressure of the battery rises abnormally, the gas inside the battery is released to the outside of the battery through the sealing lid, so that the battery can be prevented from bursting under high pressure. (For example, Jikken 47-3954)
No. 2).
しかし、従来使用の封口蓋は、第３図に示すように、
封口板（７）の外周部を内方に折り返し、その封口板
（７）上に弁体（９）および金属ばね（10）を配置し、
その上から端子板（８）をかぶせ、端子板（８）の鍔部
（8b）の外周端を封口板（７）の外周折り返し部（7e）
に挿入したものであり、この封口蓋（６）を環状ガスケ
ット（５）を介して電池容器（４）の開口部に配置し、
電池容器（４）の開口端部（4a）を内方に締め付けるこ
とによって電池容器（４）の開口部を封口している（た
とえば、実公昭47−39542号公報）。However, as shown in FIG.
The outer peripheral portion of the sealing plate (7) is turned inward, and a valve body (9) and a metal spring (10) are arranged on the sealing plate (7).
A terminal plate (8) is placed over the terminal plate (8), and the outer peripheral end of the flange (8b) of the terminal plate (8) is folded back around the outer periphery of the sealing plate (7).
The sealing lid (6) is arranged at the opening of the battery container (4) via the annular gasket (5),
The opening of the battery container (4) is sealed by tightening the opening end (4a) of the battery container (4) inward (for example, Japanese Utility Model Publication No. 47-39542).
この場合、環状ガスケット（５）を曲面状に形成され
た封口板（７）の外周折り返し部（7e）へ圧接するの
で、電池容器（４）の開口端部（4a）の内方への締め付
けは均一に行なわれるものの、環状ガスケット（５）を
曲面状に締め付けているため、高い締付力が得られず、
その結果、電解液の漏出が生じるという問題がある。In this case, the annular gasket (5) is pressed into contact with the outer peripheral folded portion (7e) of the sealing plate (7) formed in a curved surface, so that the opening end (4a) of the battery container (4) is tightened inward. Is performed uniformly, however, since the annular gasket (5) is fastened in a curved shape, a high fastening force cannot be obtained,
As a result, there is a problem that leakage of the electrolyte occurs.
したがって、本発明は、上記アルカリ蓄電池の問題点
を解決し、耐漏液性の優れた筒形アルカリ蓄電池を提供
することを目的とする。Therefore, an object of the present invention is to solve the above-mentioned problems of the alkaline storage battery and to provide a cylindrical alkaline storage battery having excellent liquid leakage resistance.
上記課題を解決するための本発明の構成をその実施例
に対応する第１〜２図を用いて説明すると、本発明は、
封口板（７）の外周部を折り返さず、封口板（７）の外
周端に立ち上がり部（7b）を設け、この立ち上がり部
（7b）の上端を端子板（８）の鍔部（8b）の外周端の上
面より上方に突出させ、電池容器（４）の開口端部（4
a）を曲面状に内方に折り曲げて締め付けたものであ
る。The configuration of the present invention for solving the above problems will be described with reference to FIGS. 1 and 2 corresponding to the embodiment.
A rising portion (7b) is provided at the outer peripheral end of the sealing plate (7) without folding the outer peripheral portion of the sealing plate (7), and the upper end of the rising portion (7b) is connected to the flange (8b) of the terminal plate (8). The battery case (4) is projected upward from the upper surface of the outer peripheral end, and the open end (4
a) is bent inward into a curved surface and tightened.
上記のように、封口板（７）の外周端における立ち上
がり部（7b）の上端が端子板（８）の鍔部（8b）の外周
端の上面より上方に突出しているので、封口蓋（６）を
電池容器（４）の開口部に環状ガスケット（５）を介し
て配置し、電池容器（４）の開口端部（4a）を曲面状に
内方に折り曲げて締め付けると、封口板（７）の立ち上
がり部（7b）の側面にも均等に強力な締付力が加わり、
環状ガスケット（５）が強力に封口板（７）の立ち上が
り部（7b）の上端の角部に圧接し、その部分で特に強力
に締め付けられ、高い締付力が得られる。その結果、電
解液の漏出が防止されるようになり、耐漏液性の優れた
筒形アルカリ蓄電池が得られるようになる。As described above, since the upper end of the rising portion (7b) at the outer peripheral end of the sealing plate (7) protrudes above the upper surface of the outer peripheral end of the flange (8b) of the terminal plate (8), the sealing lid (6) is formed. ) Is disposed in the opening of the battery container (4) via an annular gasket (5), and the opening end (4a) of the battery container (4) is bent inwardly into a curved shape and tightened to form a sealing plate (7). ) The equally strong clamping force is applied to the side of the rising part (7b),
The annular gasket (5) is strongly pressed against the corner at the upper end of the rising portion (7b) of the sealing plate (7), and is particularly strongly tightened at that portion, so that a high tightening force is obtained. As a result, leakage of the electrolytic solution is prevented, and a cylindrical alkaline storage battery having excellent leakage resistance is obtained.
つぎに実施例をあげて本発明をより詳細に説明する。 Next, the present invention will be described in more detail with reference to examples.
第１図は本発明の筒形アルカリ蓄電池の一実施例を示
す断面図であり、第２図は第１図に示す筒形アルカリ蓄
電池に使用された封口蓋の拡大断面図である。FIG. 1 is a sectional view showing an embodiment of the cylindrical alkaline storage battery of the present invention, and FIG. 2 is an enlarged sectional view of a sealing lid used in the cylindrical alkaline storage battery shown in FIG.
まず、電池全体を第１図に基づいて説明すると、
（１）は正極、（２）は負極、（３）はセパレータ、
（４）は電池容器、（５）は環状ガスケット、（６）は
封口蓋、（７）は封口板、（８）は端子板、（９）は弁
体、（10）は金属ばね、（11）はリード体、（12）は絶
縁体である。First, the entire battery will be described with reference to FIG.
(1) is a positive electrode, (2) is a negative electrode, (3) is a separator,
(4) is a battery container, (5) is an annular gasket, (6) is a sealing lid, (7) is a sealing plate, (8) is a terminal plate, (9) is a valve body, (10) is a metal spring, 11) is a lead body, and (12) is an insulator.
正極（１）はオキシ水酸化ニッケルを活物質として含
むシート状の焼結式ニッケル電極からなり、負極（２）
はカドミウムを活物質として含むシート状の焼結式カド
ミウム電極からなる。The positive electrode (1) is a sheet-shaped sintered nickel electrode containing nickel oxyhydroxide as an active material, and the negative electrode (2)
Is composed of a sheet-shaped sintered cadmium electrode containing cadmium as an active material.
セパレータ（３）はナイロン不織布からなり、上記の
正極（１）と負極（２）は、このセパレータ（３）を介
して重ね合わせ、渦巻状に巻回して渦巻状電極体にさ
れ、その渦巻状電極体の状態で電池容器（４）内に挿入
されて電池容器（４）内に収容されている。The separator (3) is made of a nylon nonwoven fabric, and the positive electrode (1) and the negative electrode (2) are overlapped with each other via the separator (3) and spirally wound into a spiral electrode body. It is inserted into the battery container (4) in the state of the electrode body and is housed in the battery container (4).
電解液には、30重量％水酸化カリウム水溶液からなる
アルカリ電解液が用いられ、この電解液は電池容器
（４）の開口部から電池容器（４）内に注入されて電池
容器（４）内に収容されている。As the electrolytic solution, an alkaline electrolytic solution composed of a 30% by weight aqueous solution of potassium hydroxide is used, and this electrolytic solution is injected into the battery container (4) from the opening of the battery container (4), and Is housed in
封口蓋（６）は、第２図に拡大して示すように、封口
板（７）と、端子板（８）と、弁体（９）と、金属ばね
（10）を有している。The sealing lid (6) has a sealing plate (7), a terminal plate (8), a valve element (9), and a metal spring (10) as shown in an enlarged manner in FIG.
封口板（７）は、鉄にニッケルメッキをしたものから
なり、その平面形状は円形状であって、その中心部にガ
ス検知孔（7a）を有し、外周端に立ち上がり部（7b）を
有している。ただし、この実施例に示すものでは、中央
部は弁体（９）などを収容する空間を確保しやすくする
ために、凹部（7c）とし、その周囲を鍔状に形成して鍔
部（7d）としている。したがって、上記のガス検出孔
（7a）は上記凹部（7c）の中心部に設けられ、上記立ち
上がり部（7b）は上記鍔部（7d）の外周端に位置するこ
とになるが、封口板（７）の中央部を凹部にすることは
必ずしも必要でなく、立ち上がり部（7b）以外は平面状
のものであってもよい。上記の立ち上がり部（7b）の上
面は平面状で、特にその外周側の角部は角ばっていて、
丸みが付いてないものがよい。The sealing plate (7) is made of nickel-plated iron, has a circular planar shape, has a gas detection hole (7a) at the center thereof, and has a rising portion (7b) at the outer peripheral end. Have. However, in the case of this embodiment, the central portion is formed as a concave portion (7c) in order to easily secure a space for accommodating the valve element (9) and the like, and the periphery thereof is formed in a flange shape to form a flange portion (7d). ). Therefore, the gas detection hole (7a) is provided at the center of the recess (7c), and the rising portion (7b) is located at the outer peripheral end of the flange (7d). It is not always necessary to make the central portion of 7) a concave portion, and the portion other than the rising portion (7b) may be planar. The top surface of the rising portion (7b) is flat, and particularly the corners on the outer peripheral side are square,
Those without roundness are good.
端子板（８）は、鉄にニッケルメッキをしたものから
なり、中央部における凸出部（8a）と、その周囲に形成
された鍔部（8b）を有し、鍔部（8b）の内周端にガス排
出孔（8c）が設けられている。ただし、このガス排出孔
（8c）は凸出部（8a）に設けてもよい。The terminal plate (8) is made of iron plated with nickel, and has a protruding portion (8a) at the center and a flange (8b) formed around the protruding portion (8a). A gas discharge hole (8c) is provided at the peripheral end. However, this gas discharge hole (8c) may be provided in the protruding portion (8a).
端子板（８）の外径は上記封口板（７）の立ち上がり
部（7b）の内径より小さく、この端子板（８）を前記封
口板（７）上に配置した時に、端子板（８）の外周端は
封口板（７）の立ち上がり部（7b）の内周面に接する
か、またはその内周側に位置し、封口板（７）の立ち上
がり部（7b）の上端は端子板（８）の鍔部（8b）の外周
端の上面より上方に突出している。The outer diameter of the terminal plate (8) is smaller than the inner diameter of the rising portion (7b) of the sealing plate (7), and when the terminal plate (8) is placed on the sealing plate (7), the terminal plate (8) The outer peripheral edge of the sealing plate (7) is in contact with or located on the inner peripheral surface of the rising portion (7b) of the sealing plate (7), and the upper end of the rising portion (7b) of the sealing plate (7) has a terminal plate (8). ) Protrudes upward from the upper surface of the outer peripheral end of the flange portion (8b).
弁体（９）は、鉄にニッケルメッキをした座板とエチ
レン・プロピレン・ジエンゴムからなる弾性弁体とを一
体化させたものからなり、金属ばね（10）は、ステンレ
ス鋼製のコイルスプリングからなり、これら弁体（９）
と金属ばね（10）は、端子板（８）を封口板（７）上に
配置した時に端子板（８）の凸出部（8a）と封口板
（７）との間に形成される空間内に収容されている。そ
して、その収容の態様としては、弁体（９）が封口板
（７）上に配置して、弁体（９）の弾性弁体側が封口板
（７）のガス検知孔（7a）を覆い、金属ばね（10）が上
記弁体（９）と端子板（８）との間に配置して弁体
（９）を封口板（７）に押圧している。The valve body (9) is formed by integrating a nickel-plated iron seat plate and an elastic valve body made of ethylene-propylene-diene rubber. The metal spring (10) is made of a stainless steel coil spring. And these valve elements (9)
And the metal spring (10) form a space formed between the projection (8a) of the terminal plate (8) and the sealing plate (7) when the terminal plate (8) is arranged on the sealing plate (7). Housed within. As a mode of the accommodation, the valve element (9) is disposed on the sealing plate (7), and the elastic valve element side of the valve element (9) covers the gas detection hole (7a) of the sealing plate (7). A metal spring (10) is disposed between the valve (9) and the terminal plate (8) to press the valve (9) against the sealing plate (7).
この封口蓋（６）の組立ては、たとえば、弁体（９）
を封口板（７）の凹部（7b）上に配置し、その上に金属
ばね（10）を配置し、その上から端子板（８）をかぶせ
るようにして封口板（７）上に配置し、端子板（８）の
鍔部（8b）を封口板（７）の鍔部（7d）に溶接すること
によって行なわれる。The assembly of the sealing lid (6) is performed, for example, by using the valve body (9).
Is disposed on the concave portion (7b) of the sealing plate (7), a metal spring (10) is disposed thereon, and the terminal plate (8) is placed on the metal spring (10) so as to cover the sealing plate (7). The welding is performed by welding the flange (8b) of the terminal plate (8) to the flange (7d) of the sealing plate (7).
環状ガスケット（５）は、ナイロン製で、前記封口蓋
（６）はこの環状ガスケット（５）を介して電池容器
（４）の開口部に配置され、電池容器（４）の開口端部
（4a）を曲面状に内方に折り曲げて締め付けることによ
り、電池容器（４）の開口部は封口蓋（６）と環状ガス
ケット（５）とで封口されている。The annular gasket (5) is made of nylon, and the sealing lid (6) is disposed at the opening of the battery container (4) via the annular gasket (5), and the open end (4a) of the battery container (4) is provided. ) Is bent inward into a curved surface and tightened, whereby the opening of the battery container (4) is sealed with a sealing lid (6) and an annular gasket (5).
リード体（11）は、ニッケル製で、このリード体（1
1）の一端は、正極（１）に接触しており、リード体（1
1）の他端は、封口蓋（６）の電池容器（４）の開口部
への配置に先立って、封口板（７）の底面に溶接され
る。このようにして、封口蓋（６）は正極端子としての
機能を兼ねるようになるが、負極側では、渦巻状電極体
の最外周部が負極（２）で構成されていて、この負極
（２）が電池容器（４）の内周面と接触し、その結果、
電池容器（４）が負極端子を兼ねるようになる。The lead body (11) is made of nickel.
One end of 1) is in contact with the positive electrode (1) and the lead body (1)
The other end of 1) is welded to the bottom surface of the sealing plate (7) prior to disposing the sealing lid (6) in the opening of the battery container (4). In this manner, the sealing lid (6) also functions as a positive electrode terminal. On the negative electrode side, the outermost peripheral portion of the spiral electrode body is constituted by the negative electrode (2). ) Comes into contact with the inner peripheral surface of the battery container (4),
The battery container (4) also serves as the negative electrode terminal.
絶縁体（12）は、ポリプロピレン製で、この絶縁体
（12）は、正極（１）、負極（２）およびセパレータ
（３）からなる渦巻状電極体の電池容器（４）内への収
容に先立って、電池容器（４）内に挿入され、電池容器
（４）の底部上に配置される。The insulator (12) is made of polypropylene. The insulator (12) is used for accommodating the spiral electrode body including the positive electrode (1), the negative electrode (2), and the separator (3) in the battery container (4). Previously, it is inserted into the battery case (4) and placed on the bottom of the battery case (4).
電池容器（４）は、鉄にニッケルメッキをしたものか
らなり、有底円筒状に作製されているが、上記絶縁体
（12）および渦巻状電極体の挿入後、あるいはそれに引
き続いて電解液を注入した後、その開口端近くに環状の
溝（4b）を形成し、その溝（4b）の底部で環状ガスケッ
ト（５）を支え、環状ガスケット（５）や封口蓋（６）
が電池容器（４）の開口部から内部に落ち込まないよう
にしている。The battery case (4) is made of iron plated with nickel and is formed in a cylindrical shape with a bottom. After the insulator (12) and the spiral electrode body are inserted, or after that, the electrolytic solution is poured. After the injection, an annular groove (4b) is formed near the opening end, and the annular gasket (5) is supported at the bottom of the groove (4b), and the annular gasket (5) and the sealing lid (6) are formed.
Are prevented from falling into the inside from the opening of the battery container (4).
この電池では、電池内部にガスが発生して、電池の内
部圧力が異常上昇したときは、電池内部のガスがガス検
知孔（7a）を覆っている弁体（９）を上方に押圧するの
で、金属ばね（10）が収縮し、それに伴って弁体（９）
が上昇して封口板（７）との間に隙間をつくり、ガス検
知孔（7a）を通過したガスは該隙間を通り、さらに端子
板（８）に設けたガス排出孔（8c）を通って電池外部へ
放出される。したがって、この電池では高圧下での破裂
が防止される。In this battery, when gas is generated inside the battery and the internal pressure of the battery rises abnormally, the gas inside the battery presses the valve element (9) covering the gas detection hole (7a) upward. , The metal spring (10) contracts, and accordingly the valve body (9)
Rises to form a gap with the sealing plate (7), and the gas passing through the gas detection hole (7a) passes through the gap and further passes through the gas discharge hole (8c) provided in the terminal plate (8). Released to the outside of the battery. Therefore, in this battery, rupture under high pressure is prevented.
次の第１表は、第１図に示す本発明の実施例の電池と
第３図に示す従来電池との耐漏液性を調べた結果を示す
ものである。The following Table 1 shows the results of examining the leakage resistance of the battery of the example of the present invention shown in FIG. 1 and the conventional battery shown in FIG.
本発明の実施例の電池に使用された封口蓋（６）は第
２図に示す通りであり、封口板（７）の立ち上がり部
（7b）の高さ（下面からの高さ）を1.2mmにし、該立ち
上がり部（7b）の上端が端子板（８）の鍔部（8b）の外
周端の上面より0.3mm上方に突出するようにしている。The sealing lid (6) used in the battery of the embodiment of the present invention is as shown in FIG. 2, and the height (height from the lower surface) of the rising portion (7b) of the sealing plate (7) is 1.2 mm. The upper end of the rising portion (7b) projects 0.3 mm above the upper surface of the outer peripheral end of the flange (8b) of the terminal plate (8).
これに対し、第３図に示す従来電池では、封口板
（７）の外周部は折り返され、端子板（８）の鍔部（8
b）の外周端を上記封口板（７）の外周折り返し部（7
e）に挿入している。On the other hand, in the conventional battery shown in FIG. 3, the outer peripheral portion of the sealing plate (7) is folded back, and the flange portion (8) of the terminal plate (8) is folded.
b) the outer peripheral edge of the sealing plate (7)
e) is inserted.
耐漏液性試験は、本発明の実施例の電池、従来電池と
も20個ずつを用い、各電池に対して、60℃１時間、−10
℃１時間を１サイクルとする加熱、冷却を繰り返し、30
0サイクル後の電池の漏液の有無を調べることによって
行った。その結果を第１表に漏液発生率で示すが、この
第１表では、試験に供した電池個数と漏液が発生した電
池個数とが理解しやすいように、試験に供した電池個数
を分母に示し、漏液の発生した電池個数を分子に示す態
様で漏液発生率を表している。The leakage resistance test was conducted using the battery of the example of the present invention and the conventional battery at a rate of 20 ° C. for each battery at 60 ° C. for 1 hour and −10 ° C.
Heating and cooling with 1 cycle of 1 hour
The test was performed by checking the battery for leakage after 0 cycles. The results are shown in Table 1 in terms of the rate of occurrence of liquid leakage. In Table 1, the number of cells subjected to the test was set so that the number of cells subjected to the test and the number of cells causing the leakage were easy to understand. The rate of liquid leakage is shown in the form shown in the denominator and the number of batteries in which the liquid has leaked is shown in the numerator.
第１表に示すように、本発明の実施例の電池では、60
℃１時間、−10℃１時間の加熱、冷却を300サイクル繰
り返した後でも、漏液がまったく発生しなかったが、従
来電池では試験に供した20個の電池のうち３個の電池に
漏液が発生した。なお、電池の耐漏液性を調べるにあた
って、電池に対して60℃１時間、−10℃１時間の加熱、
冷却を繰り返したのは、そのような加熱、冷却に伴っ
て、環状ガスケット（５）、封口板（７）、電池容器
（４）が伸縮を繰り返し、それらの熱膨張係数の相違に
よって、封口板（７）と環状ガスケット（５）との間や
環状ガスケット（５）と電池容器（４）との間に隙間を
生じて、締付力の差による耐漏液性の差が顕著に現れる
からである。 As shown in Table 1, in the battery of the example of the present invention, 60
Even after 300 cycles of heating and cooling at -10 ° C for 1 hour and at -10 ° C for 1 hour, no liquid leakage occurred, but in the conventional battery, three out of the 20 batteries used in the test leaked. Liquid was generated. In addition, when examining the leakage resistance of the battery, heating the battery at 60 ° C for 1 hour, -10 ° C for 1 hour,
The reason for repeating the cooling is that the annular gasket (5), the sealing plate (7), and the battery container (4) repeatedly expand and contract with such heating and cooling. A gap is formed between (7) and the annular gasket (5) or between the annular gasket (5) and the battery container (4), and a difference in leakage resistance due to a difference in tightening force appears remarkably. is there.
上記実施例では、正極（１）にオキシ水酸化ニッケル
を活物質として含む焼結式ニッケル電極を用い、負極
（２）にカドミウムを活物質として含む焼結式カドミウ
ム電極を用いた場合について説明したが、本発明はその
場合のみに限られるものではなく、正極（１）は金属酸
化物または金属水酸化物を含むものであればよいし、負
極（２）はカドミウム、亜鉛、鉄、それらの酸化物また
はそれらの水酸化物を含むものであればよい。In the above embodiment, a case was described in which a sintered nickel electrode containing nickel oxyhydroxide as an active material was used for the positive electrode (1), and a sintered cadmium electrode containing cadmium as the active material was used for the negative electrode (2). However, the present invention is not limited to this case, and the positive electrode (1) may be any one containing a metal oxide or a metal hydroxide, and the negative electrode (2) may be cadmium, zinc, iron, or the like. What is necessary is just to contain an oxide or a hydroxide thereof.
なお、本発明は、封口蓋（６）として、封口板（７）
と端子板（８）の凸出部（8a）との間に形成される空間
内に弁体（９）と金属ばね（10）を収容したものを用い
るが、本発明は上記空間内に弁体（９）のみを収容した
封口蓋（６）を用いる場合にも適用することが可能であ
る。In the present invention, the sealing plate (7) is used as the sealing lid (6).
A valve body (9) and a metal spring (10) are accommodated in a space formed between the terminal plate (8) and the protruding portion (8a) of the terminal plate (8). The present invention can also be applied to a case where a sealing lid (6) containing only the body (9) is used.
以上説明したように、本発明によれば、耐漏液性の優
れた筒形アルカリ蓄電池が提供される。As described above, according to the present invention, a cylindrical alkaline storage battery having excellent liquid leakage resistance is provided.
第１図は本発明の筒形アルカリ蓄電池の一実施例を示す
断面図であり、第２図は第１図に示す筒形アルカリ蓄電
池に使用された封口蓋の拡大断面図である。第３図は従
来の筒形アルカリ蓄電池の一例を示す断面図である。 （１）……正極、（２）……負極、（３）……セパレー
タ、 （４）……電池容器、（4a）……開口端部、 （５）……環状ガスケット、（６）……封口蓋、 （７）……封口板、（7a）……ガス検知孔、 （7b）……立ち上がり部、（８）……端子板、 （8a）……凸出部、（8b）……鍔部、 （8c）……ガス排出孔、（９）……弁体、 （10）……金属ばねFIG. 1 is a sectional view showing an embodiment of the cylindrical alkaline storage battery of the present invention, and FIG. 2 is an enlarged sectional view of a sealing lid used in the cylindrical alkaline storage battery shown in FIG. FIG. 3 is a sectional view showing an example of a conventional cylindrical alkaline storage battery. (1) Positive electrode, (2) negative electrode, (3) separator, (4) battery container, (4a) open end, (5) annular gasket, (6) ... sealing lid, (7) ... sealing plate, (7a) ... gas detection hole, (7b) ... rising part, (8) ... terminal plate, (8a) ... protruding part, (8b) ... ... Flange, (8c) ... Gas exhaust hole, (9) ... Valve, (10) ... Metal spring
Claims (1)
（３）と、アルカリ電解液と、電池容器（４）と、環状
ガスケット（５）と、封口蓋（６）を有し、 上記封口蓋（６）は、封口板（７）と、端子板（８）
と、弁体（９）と、金属ばね（10）を有し、 上記封口板（７）は、中心部にガス検知孔（7a）と、外
周端に立ち上がり部（7b）を有し、 上記端子板（８）は、凸出部（8a）と、該凸出部（8a）
の周囲に形成された鍔部（8b）を有し、この端子板
（８）の凸出部（8a）または鍔部（8b）にはガス排出孔
（8c）が設けられ、 上記端子板（８）は、封口板（７）上に配置され、端子
板（８）の鍔部（8b）の外周端は、封口板（７）の外周
端における立ち上がり部（7b）の内周面に接するか、ま
たはその内周側に位置し、 上記封口板（７）の立ち上がり部（7b）の上端は、端子
板（８）の鍔部（8b）の外周端の上面より上方に突出
し、 上記弁体（９）および金属ばね（10）は、封口板（７）
と端子板（８）の凸出部（8a）との間に形成される空間
内に収容され、 上記弁体（９）は、封口板（７）の上部に配置されてガ
ス検知孔（7a）を覆っており、 上記金属ばね（10）は、弁体（９）と端子板（８）との
間に配置し、弁体（９）を封口板（７）に押圧してい
て、 上記正極（１）、負極（２）、セパレータ（３）および
アルカリ電解液は、電池容器（４）内に収容され、 上記環状ガスケット（５）および封口蓋（６）は、電池
容器（４）の開口部に配置され、環状ガスケット（５）
が封口蓋（６）と電池容器（４）との間に介在し、電池
容器（４）の開口端部（4a）を曲面状に内方に折り曲げ
て締め付けることにより、電池容器（４）の開口部が封
口されていることを特徴とする、 筒形アルカリ蓄電池。The present invention has a positive electrode (1), a negative electrode (2), a separator (3), an alkaline electrolyte, a battery container (4), an annular gasket (5), and a sealing lid (6). The sealing lid (6) includes a sealing plate (7) and a terminal plate (8).
And a valve element (9) and a metal spring (10). The sealing plate (7) has a gas detection hole (7a) at a central portion and a rising portion (7b) at an outer peripheral end. The terminal plate (8) includes a projection (8a) and the projection (8a).
The terminal plate (8) is provided with a gas discharge hole (8c) at a protruding portion (8a) or a flange portion (8b) of the terminal plate (8). 8) is disposed on the sealing plate (7), and the outer peripheral end of the flange (8b) of the terminal plate (8) contacts the inner peripheral surface of the rising portion (7b) at the outer peripheral end of the sealing plate (7). Or an upper end of a rising portion (7b) of the sealing plate (7) protrudes upward from an upper surface of an outer peripheral end of a flange portion (8b) of the terminal plate (8); The body (9) and the metal spring (10)
And the valve body (9) is housed in a space formed between the protruding part (8a) of the terminal plate (8) and the gas detection hole (7a) disposed above the sealing plate (7). The metal spring (10) is arranged between the valve body (9) and the terminal plate (8), and presses the valve body (9) against the sealing plate (7). The positive electrode (1), the negative electrode (2), the separator (3) and the alkaline electrolyte are accommodated in a battery container (4), and the annular gasket (5) and the sealing lid (6) are connected to the battery container (4). Annular gasket (5) located in the opening
Is interposed between the sealing lid (6) and the battery container (4), and the open end (4a) of the battery container (4) is bent inwardly into a curved shape and tightened, thereby forming the battery container (4). A cylindrical alkaline storage battery, wherein an opening is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2253496A JP2965650B2 (en) | 1990-09-20 | 1990-09-20 | Cylindrical alkaline storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2253496A JP2965650B2 (en) | 1990-09-20 | 1990-09-20 | Cylindrical alkaline storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04132157A JPH04132157A (en) | 1992-05-06 |
| JP2965650B2 true JP2965650B2 (en) | 1999-10-18 |
Family
ID=17252188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2253496A Expired - Fee Related JP2965650B2 (en) | 1990-09-20 | 1990-09-20 | Cylindrical alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2965650B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4958162B2 (en) * | 2000-09-01 | 2012-06-20 | 日立マクセルエナジー株式会社 | Alkaline battery |
-
1990
- 1990-09-20 JP JP2253496A patent/JP2965650B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04132157A (en) | 1992-05-06 |
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