JP2000306557A - Container sealing structure of sealed type battery - Google Patents
Container sealing structure of sealed type batteryInfo
- Publication number
- JP2000306557A JP2000306557A JP11112114A JP11211499A JP2000306557A JP 2000306557 A JP2000306557 A JP 2000306557A JP 11112114 A JP11112114 A JP 11112114A JP 11211499 A JP11211499 A JP 11211499A JP 2000306557 A JP2000306557 A JP 2000306557A
- Authority
- JP
- Japan
- Prior art keywords
- container
- gasket
- sealing structure
- opening edge
- compressive
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば密閉型ニッ
ケルカドミウム電池等の密閉型電池における容器封口構
造に係り、基本的に、略有底円筒状容器の開口縁部を内
方へ絞り込むことによって、ガスケットを介して封口蓋
をかしめた容器封口構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container sealing structure for a sealed battery such as a sealed nickel cadmium battery, for example, by narrowing an opening edge of a substantially bottomed cylindrical container inward. And a container sealing structure in which a sealing lid is swaged via a gasket.
【０００２】[0002]
【従来の技術】図３には、本発明が適用される一般的な
密閉型電池の例が示されている。図３において、密閉型
電池は、略有底円筒状の鋼製容器（溝付き缶）１と、こ
の容器１の上部開口１０を封口するための略円盤状の金
属製封口蓋２と、この封口蓋２の外周部分２０と容器１
との間に介設される合成樹脂製ガスケット３とを備えて
いる。2. Description of the Related Art FIG. 3 shows an example of a general sealed battery to which the present invention is applied. In FIG. 3, the sealed battery includes a substantially cylindrical steel container (grooved can) 1 with a bottom, a substantially disk-shaped metal sealing lid 2 for sealing an upper opening 10 of the container 1, Outer peripheral portion 20 of sealing lid 2 and container 1
And a synthetic resin gasket 3 interposed therebetween.
【０００３】上記容器１は、その上部開口１０側の内周
に環状突出部１４が形成されると共に、内部に正極材、
負極材、セパレータおよび電解液等の電池内容物（図示
せず）を収納するようになっている。なお、上記封口蓋
２の中央部には、正極端子２２が設けられている。The container 1 has an annular projection 14 formed on the inner periphery of the upper opening 10 side, and a positive electrode material,
A battery content (not shown) such as a negative electrode material, a separator, and an electrolyte is accommodated. A positive electrode terminal 22 is provided at the center of the sealing lid 2.
【０００４】次に図４には、上記のような密閉型電池に
おける容器封口構造の従来例が示されている。図４にお
いて、容器１の開口縁部１２を内方へ絞り込むことによ
り、封口蓋２の外周部分２０が、ガスケット３を介し
て、容器１の開口縁部１２と環状突出部１４との間で押
圧固定され（かしめられ）ている。Next, FIG. 4 shows a conventional example of a container sealing structure in the above-mentioned sealed type battery. In FIG. 4, by narrowing the opening edge 12 of the container 1 inward, the outer peripheral portion 20 of the sealing lid 2 is interposed between the opening edge 12 of the container 1 and the annular projection 14 via the gasket 3. It is pressed (fixed).
【０００５】図４に示すように、容器１の開口縁部１２
は、その先端側がほぼ水平となるように絞り込まれてい
る。この場合、容器１の開口縁部１２と環状突出部１４
との間でのガスケット３の圧縮変形量は、例えば、当該
圧縮変形による初期圧縮応力が圧縮降伏応力の３０〜４
０％の大きさとなる程度である。[0005] As shown in FIG.
Are narrowed down so that the tip side is substantially horizontal. In this case, the opening edge 12 of the container 1 and the annular projection 14
The amount of compressive deformation of the gasket 3 between, for example, the initial compressive stress due to the compressive deformation is 30 to 4 of the compressive yield stress.
It is on the order of 0%.
【０００６】[0006]
【発明が解決しようとする課題】上述したような従来の
密閉型電池の容器封口構造には、以下のような問題点が
ある。すなわち、容器内が急激に高圧になったような場
合に、容器１の開口縁部１２が上方へ押し広げられ、容
器１の上部開口１０（容器１および封口蓋２とガスケッ
ト３との間）から電解液が漏れ出す恐れがある。The above-described conventional container-sealing structure for a sealed battery has the following problems. That is, when the pressure inside the container suddenly becomes high, the opening edge portion 12 of the container 1 is pushed upward, and the upper opening 10 of the container 1 (between the container 1 and the sealing lid 2 and the gasket 3). Electrolyte may leak from the battery.
【０００７】また、容器内圧が急速に高圧から低圧へ移
行する際、極低圧（例えば０〜０.５kg/cm2）におい
て、容器１および封口蓋２の微動（微小な変形や変位）
が生ずるが、そのような場合にも容器１の上部開口１０
からの電解液の漏れが発生する恐れがある。When the pressure inside the container rapidly changes from high to low, the container 1 and the sealing lid 2 are slightly moved (small deformation or displacement) at an extremely low pressure (for example, 0 to 0.5 kg / cm 2 ).
However, even in such a case, the upper opening 10
Electrolyte may leak from the battery.
【０００８】本発明は、このような点を考慮してなされ
たものであり、容器内圧の変動等による容器の上部開口
からの電解液の漏れを効果的に防止できるような密閉型
電池の容器封口構造を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has been made in consideration of the above-mentioned problems, and is intended to effectively prevent leakage of an electrolyte from an upper opening of a container due to fluctuations in the internal pressure of the container. It is intended to provide a sealing structure.
【０００９】[0009]
【課題を解決するための手段】本発明は、上部開口側の
内周に環状突出部が形成された略有底円筒状の鋼製容器
と、前記容器の上部開口を封口するための略円盤状の金
属製封口蓋と、前記封口蓋の外周部分と、前記容器との
間に介設される合成樹脂製ガスケットとを備えた密閉型
電池の容器封口構造であって、前記容器の開口縁部を内
方へ絞り込むことにより、前記封口蓋の外周部分が、前
記ガスケットを介して、前記容器の開口縁部と環状突出
部との間で押圧固定されており、前記容器の開口縁部
は、その先端側が水平に対して５〜３０°下方を向く状
態に絞り込まれていることを特徴とする密閉型電池の容
器封口構造である。SUMMARY OF THE INVENTION The present invention provides a substantially cylindrical steel container having a bottom with an annular projection formed on the inner periphery on the upper opening side, and a substantially disk for closing the upper opening of the container. And a synthetic resin gasket interposed between the metal sealing lid, an outer peripheral portion of the sealing lid, and the container, wherein the container has an opening edge of the container. By narrowing the portion inward, the outer peripheral portion of the sealing lid is pressed and fixed between the opening edge of the container and the annular protrusion through the gasket, and the opening edge of the container is And a container sealing structure for a sealed battery, characterized in that the front end is narrowed down by 5 to 30 degrees with respect to the horizontal.
【００１０】この発明によれば、容器の開口縁部はその
先端側が水平に対して５〜３０°下方を向く状態に絞り
込まれているので、当該先端側がほぼ水平となるように
絞り込まれている場合に比べ、容器の開口縁部と環状突
出部との間で、特に封口蓋の外周部分の上下面が、ガス
ケットを介してより強力に押圧固定される。According to the present invention, the opening edge of the container is narrowed down so that the front end thereof is directed downward by 5 to 30 degrees with respect to the horizontal, so that the front end is narrowed down to be substantially horizontal. As compared to the case, the upper and lower surfaces of the outer peripheral portion of the sealing lid, in particular, are more strongly pressed and fixed via the gasket between the opening edge of the container and the annular projection.
【００１１】本発明において、容器の開口縁部と環状突
出部との間でのガスケットの圧縮変形量は、当該圧縮変
形による初期圧縮応力が圧縮降伏応力の３０〜８０％の
大きさとなるように設定することが好ましい。In the present invention, the amount of compressive deformation of the gasket between the opening edge of the container and the annular protrusion is such that the initial compressive stress due to the compressive deformation is 30 to 80% of the compressive yield stress. It is preferable to set.
【００１２】そのように、ガスケットの圧縮変形量を、
当該圧縮変形による初期圧縮応力が圧縮降伏応力より小
さくなるように設定することで、ガスケットにおける上
記圧縮変形による初期圧縮応力と容器内圧の上昇による
圧縮応力との合応力を、圧縮降伏応力以内に抑えること
が可能となる。また、容器内圧が急速に高圧から低圧へ
移行する際、容器および封口蓋の微動（微小な変形や変
位）が生ずるが、ガスケットにそのような微動に追従し
て変形する余地が残されているので、そのような場合の
容器の上部開口からの電解液の漏れを防止することがで
きる。Thus, the amount of compressive deformation of the gasket is
By setting the initial compressive stress due to the compressive deformation to be smaller than the compressive yield stress, the combined stress of the initial compressive stress due to the compressive deformation in the gasket and the compressive stress due to an increase in the container internal pressure is suppressed to within the compressive yield stress. It becomes possible. Further, when the pressure inside the container rapidly changes from high pressure to low pressure, fine movement (small deformation or displacement) of the container and the sealing lid occurs, but there is room for the gasket to deform following such fine movement. Therefore, in such a case, leakage of the electrolyte from the upper opening of the container can be prevented.
【００１３】また、ガスケットは合成樹脂製であるた
め、その圧縮変形量を、上記のように当該圧縮変形によ
る初期圧縮応力が圧縮降伏応力の８０％以内となるよう
に設定することで、応力緩和現象による当該圧縮応力の
過剰な低下を抑制することができる。このため、容器の
上部開口からの電解液の漏れの防止を、長期間に亘って
確保することができる。Further, since the gasket is made of a synthetic resin, the amount of compressive deformation is set such that the initial compressive stress due to the compressive deformation is within 80% of the compressive yield stress, as described above, thereby reducing the stress. An excessive decrease in the compressive stress due to the phenomenon can be suppressed. For this reason, it is possible to prevent the electrolyte from leaking from the upper opening of the container for a long period of time.
【００１４】[0014]
【発明の実施の形態】次に、図面を参照して本発明の一
実施形態について説明する。図１及び図２は本発明によ
る密閉型電池の容器封口構造の実施の形態を示す図であ
る。なお、図１及び図２に示す本発明の実施の形態にお
いて、図３に示す一般的な密閉型電池および図４に示す
従来の容器封口構造と同一の構成部分には同一符号を付
すと共に、適宜図３も参照して説明する。Next, an embodiment of the present invention will be described with reference to the drawings. 1 and 2 are views showing an embodiment of a container sealing structure of a sealed battery according to the present invention. In the embodiment of the present invention shown in FIGS. 1 and 2, the same components as those of the general sealed battery shown in FIG. 3 and the conventional container sealing structure shown in FIG. This will be described with reference to FIG.
【００１５】まず、図３において、本発明が適用される
一般的な密閉型電池（例えば密閉型ニッケルカドミウム
電池）は、略有底円筒状の容器（溝付き缶）１と、この
容器１の上部開口１０を封口するための略円盤状の封口
蓋２と、この封口蓋２の外周部分２０と容器１との間に
介設されるガスケット３とを備えている。First, in FIG. 3, a general sealed battery (for example, a sealed nickel cadmium battery) to which the present invention is applied includes a substantially cylindrical container (grooved can) 1 having a bottom and a container 1 having a groove. It has a substantially disk-shaped sealing lid 2 for sealing the upper opening 10, and a gasket 3 interposed between the outer peripheral portion 20 of the sealing lid 2 and the container 1.
【００１６】ここで、上記容器１は、例えばニッケルメ
ッキ鋼材等の鋼製であり、封口蓋２は、一般に金属製で
ある。また、上記ガスケット３は、例えばポリサルフォ
ン等の合成樹脂製である。Here, the container 1 is made of steel such as a nickel-plated steel material, and the sealing lid 2 is generally made of metal. The gasket 3 is made of a synthetic resin such as polysulfone, for example.
【００１７】上記容器１は、その上部開口１０側におい
て外周に環状溝部１６が形成され、これに対応して内周
に環状突出部１４が形成されている。また、容器１は、
内部に正極材、負極材、セパレータおよび電解液等の電
池内容物（図示せず）を収納するようになっている。な
お、上記封口蓋２の中央部には、正極端子２２が設けら
れている。In the container 1, an annular groove 16 is formed on the outer periphery on the upper opening 10 side, and an annular protrusion 14 is formed on the inner periphery correspondingly. Also, the container 1
Inside, battery contents (not shown) such as a positive electrode material, a negative electrode material, a separator, and an electrolytic solution are accommodated. A positive electrode terminal 22 is provided at the center of the sealing lid 2.
【００１８】次に図１には、上記のような密閉型電池に
適用される、本実施形態の容器封口構造が示されてい
る。図１において、容器１の開口縁部１２を内方へ絞り
込むことにより、封口蓋２の外周部分２０が、ガスケッ
ト３を介して、容器１の開口縁部１２と環状突出部１４
との間で押圧固定され（かしめられ）ている。Next, FIG. 1 shows a container sealing structure of the present embodiment applied to the above-mentioned sealed battery. In FIG. 1, by narrowing the opening edge 12 of the container 1 inward, the outer peripheral portion 20 of the sealing lid 2 is connected to the opening edge 12 of the container 1 and the annular protrusion 14 via the gasket 3.
Is pressed and fixed (caulked).
【００１９】図１に示すように、本実施形態の密閉型電
池の容器封口構造においては、容器１の開口縁部１２
は、その先端側が水平に対して５〜３０°下方を向く状
態まで絞り込まれている。なお、この状態においてガス
ケット３は、封口蓋２の上面側および下面側にそれぞれ
対応した上面部３０および下面部３２と、封口蓋２の外
周端面に対応した外周部３４とを有している。As shown in FIG. 1, in the container sealing structure of the sealed battery according to the present embodiment, the opening edge 12
Are narrowed down to a state where the tip side faces downward by 5 to 30 degrees with respect to the horizontal. In this state, the gasket 3 has an upper surface portion 30 and a lower surface portion 32 respectively corresponding to the upper surface side and the lower surface side of the sealing lid 2, and an outer peripheral portion 34 corresponding to the outer peripheral end surface of the sealing lid 2.
【００２０】ここで、上記のような容器封口構造の製造
工程が、図２（ａ）、（ｂ）および図１に順次示されて
いる。まず、図２（ａ）に示す最初の段階では、容器１
の開口縁部１２が未だ絞り込まれておらず、真っ直ぐ上
方へ延びている。そして、容器１の環状突出部１４上
に、ガスケット３が載置されている。この段階では、ガ
スケット３の上面部３０も上方を向いている。そして、
このガスケット３の下面部３２上に封口蓋２が載置され
ている。Here, the manufacturing process of the container sealing structure as described above is shown in FIGS. 2 (a) and 2 (b) and FIG. First, in the first stage shown in FIG.
Has not yet been narrowed down and extends straight upward. The gasket 3 is placed on the annular projection 14 of the container 1. At this stage, the upper surface 30 of the gasket 3 also faces upward. And
The sealing lid 2 is placed on the lower surface 32 of the gasket 3.
【００２１】次に、図２（ｂ）に示す中間段階では、図
示しない第１のプレス型によって、容器１の開口縁部１
２が、水平に対して例えば４５°程度上方を向く状態ま
で絞り込まれる。そして、図２（ｂ）に示す段階から、
図示しない第２のプレス型によって、容器１の開口縁部
１２が、水平に対して５〜３０°下方を向く状態まで絞
り込まれ、図１に示したような容器封口構造が完成す
る。Next, in the intermediate stage shown in FIG. 2B, the opening edge 1 of the container 1 is
2 is narrowed down to a state where it faces upward, for example, by about 45 ° with respect to the horizontal. Then, from the stage shown in FIG.
A second press die (not shown) narrows the opening edge 12 of the container 1 to a state in which the opening edge 12 faces downward by 5 to 30 ° with respect to the horizontal, and the container sealing structure as shown in FIG. 1 is completed.
【００２２】次に、このような構成よりなる本実施形態
の作用効果について説明する。本実施形態によれば、容
器１の開口縁部１２はその先端側が水平に対して５〜３
０°下方を向く状態に絞り込まれているため、当該先端
側がほぼ水平となるように絞り込まれている場合に比
べ、容器１の開口縁部１２と環状突出部１４との間で、
特に封口蓋１の外周部分２０の上下面が、ガスケット３
を介してより強力に押圧固定される。このため、容器内
圧の変動等による容器１の上部開口１０（容器１および
封口蓋２とガスケット３との間）からの電解液の漏れを
効果的に防止することができる。Next, the operation and effect of this embodiment having the above configuration will be described. According to the present embodiment, the opening edge 12 of the container 1 is 5 to 3
Since it is narrowed down to 0 ° downward, compared with the case where the front end side is narrowed down to be substantially horizontal, between the opening edge 12 of the container 1 and the annular protrusion 14,
In particular, the upper and lower surfaces of the outer peripheral portion 20 of the sealing lid 1
押 圧 押 圧 よ り 強力. Therefore, it is possible to effectively prevent the electrolyte from leaking from the upper opening 10 (between the container 1 and the sealing lid 2 and the gasket 3) of the container 1 due to the fluctuation of the container internal pressure or the like.
【００２３】また、特に容器内圧の上昇による容器１の
開口縁部１２の浮き上がりを抑制する効果が高くなるた
め、容器内圧が急激に高圧（例えば最大５０kg/cm2）に
なったような場合の電解液の漏れの可能性を極めて少な
くすることができる。In addition, since the effect of suppressing the lifting of the opening edge portion 12 of the container 1 due to the increase in the internal pressure of the container 1 is particularly enhanced, the case where the internal pressure of the container suddenly becomes high (for example, 50 kg / cm 2 at maximum). The possibility of electrolyte leakage can be extremely reduced.
【００２４】なお、本実施形態の容器封口構造におい
て、上記のような容器１の絞り込みによる、開口縁部１
２と環状突出部１４との間でのガスケット３の圧縮変形
量は、当該圧縮変形による初期圧縮応力が圧縮降伏応力
の３０〜８０％の大きさとなるように設定することが好
ましい。In the container sealing structure of the present embodiment, the opening edge 1 is formed by narrowing the container 1 as described above.
It is preferable that the amount of compressive deformation of the gasket 3 between the annular protrusion 2 and the annular protrusion 14 is set such that the initial compressive stress due to the compressive deformation is 30 to 80% of the compressive yield stress.
【００２５】ここで、図２（ａ）に示すガスケット３の
上面部３０と下面部３２の初期厚さ寸法Ｈ1，Ｈ2と、図
１に示すガスケット３の上面部３０と下面部３２の加工
後の最小厚さ寸法Ｈ1’，Ｈ2’との差ΔＨ1（＝Ｈ1―Ｈ
1’），ΔＨ2（＝Ｈ2―Ｈ2’）が、それぞれガスケット
３の上面部３０と下面部３２の圧縮変形量である。Here, the initial thicknesses H1 and H2 of the upper surface 30 and the lower surface 32 of the gasket 3 shown in FIG. 2A, and the upper and lower portions 30 and 32 of the gasket 3 shown in FIG. ΔH1 (= H1−H) from the minimum thickness H1 ′, H2 ′ of
1 ′) and ΔH2 (= H2−H2 ′) are the amounts of compressive deformation of the upper surface portion 30 and the lower surface portion 32 of the gasket 3, respectively.
【００２６】そして、ガスケット３の圧縮変形量ΔＨ
1，ΔＨ2を、上記のように、当該圧縮変形による初期圧
縮応力が圧縮降伏応力より小さくなるように設定するこ
とで、ガスケット３における上記圧縮変形による初期圧
縮応力と容器内圧の上昇による圧縮応力との合応力を、
圧縮降伏応力以内に抑えることが可能となる。The amount of compressive deformation ΔH of the gasket 3
By setting 1, ΔH2 such that the initial compressive stress due to the compressive deformation is smaller than the compressive yield stress as described above, the initial compressive stress due to the compressive deformation in the gasket 3 and the compressive stress due to an increase in the container internal pressure are reduced. The resultant stress
It is possible to suppress it within the compressive yield stress.
【００２７】また、容器内圧が急速に高圧から低圧へ移
行する際、極低圧（例えば０〜０.５kg/cm2）におい
て、容器１および封口蓋２の微動（微小な変形や変位）
が生ずるが、ガスケット３にそのような微動に追従して
変形する余地が残されているので、そのような場合の容
器１の上部開口１０からの電解液の漏れを防止すること
ができる。When the internal pressure of the container rapidly changes from a high pressure to a low pressure, at extremely low pressure (for example, 0 to 0.5 kg / cm 2 ), the container 1 and the lid 2 are slightly moved (small deformation or displacement).
However, since the gasket 3 has room for deformation following such fine movement, leakage of the electrolyte from the upper opening 10 of the container 1 in such a case can be prevented.
【００２８】ここで、ガスケット３は合成樹脂製である
ため、上記圧縮変形による応力は、応力緩和現象によっ
て初期圧縮応力から徐々に低下して行く。この場合、初
期圧縮応力が大きいほど応力緩和の度合いも大きくな
る。Here, since the gasket 3 is made of synthetic resin, the stress due to the compressive deformation gradually decreases from the initial compressive stress due to the stress relaxation phenomenon. In this case, the greater the initial compressive stress, the greater the degree of stress relaxation.
【００２９】そこで、ガスケット３の圧縮変形量ΔＨ
1，ΔＨ2を、上記のように、当該圧縮変形による初期圧
縮応力が圧縮降伏応力の８０％以内となるように設定す
ることで、応力緩和現象による当該圧縮応力の過剰な低
下を抑制することができる。このため、容器１の上部開
口１０からの電解液の漏れの防止を、長期間に亘って確
保することができる。Therefore, the compression deformation ΔH of the gasket 3
By setting ΔH2 such that the initial compressive stress due to the compressive deformation is within 80% of the compressive yield stress as described above, it is possible to suppress the excessive decrease in the compressive stress due to the stress relaxation phenomenon. it can. Therefore, it is possible to prevent the electrolyte from leaking from the upper opening 10 of the container 1 for a long period of time.
【００３０】以上のような構成の密閉型電池の容器封口
構造によって、例えば環境温度―２０℃〜６０℃、使用
期間１０年の電解液漏れ保証を達成することができる。With the container sealing structure of the sealed battery having the above-described structure, for example, it is possible to achieve an electrolyte leakage guarantee of an ambient temperature of −20 ° C. to 60 ° C. and a use period of 10 years.
【００３１】[0031]
【発明の効果】本発明によれば、従来の密閉型電池の容
器封口構造に比べ、容器の開口縁部と環状突出部との間
で、特に封口蓋の外周部分の上下面が、ガスケットを介
してより強力に押圧固定される。このため、容器内圧の
変動等による容器の上部開口からの電解液の漏れを効果
的に防止することができる。また、特に容器内圧の上昇
による容器の開口縁部の浮き上がりを抑制する効果が高
くなるため、容器内圧の急上昇時の電解液の漏れの可能
性を極めて少なくすることができる。According to the present invention, the gasket is formed between the opening edge of the container and the annular projection, particularly the upper and lower surfaces of the outer peripheral portion of the sealing lid, as compared with the conventional container sealing structure of the sealed battery. Pressed and fixed more strongly via For this reason, it is possible to effectively prevent the electrolyte solution from leaking from the upper opening of the container due to a change in the container internal pressure or the like. In addition, since the effect of suppressing the lifting of the opening edge of the container due to the increase in the internal pressure of the container increases, the possibility of leakage of the electrolytic solution when the internal pressure of the container sharply increases can be extremely reduced.
【図１】本発明による密閉型電池の容器封口構造の一実
施形態を示す部分縦断面図。FIG. 1 is a partial longitudinal sectional view showing one embodiment of a container sealing structure of a sealed battery according to the present invention.
【図２】図１に示す容器封口構造の製造工程を示した、
図１と同様の図であって、（ａ）は最初の段階を示す
図、（ｂ）は中間段階を示す図。FIG. 2 shows a manufacturing process of the container sealing structure shown in FIG.
FIGS. 2A and 2B are diagrams similar to FIG. 1, wherein FIG. 2A shows an initial stage and FIG. 2B shows an intermediate stage.
【図３】本発明が適用される一般的な密閉型電池を示す
縦断面図。FIG. 3 is a longitudinal sectional view showing a general sealed battery to which the present invention is applied.
【図４】従来の密閉型電池の容器封口構造を示す部分縦
断面図。FIG. 4 is a partial vertical sectional view showing a conventional container-sealing structure of a sealed battery.
１ 容器（溝付き缶） １０ 上部開口 １２ 開口縁部 １４ 環状突出部 ２ 封口蓋 ２０ 外周部 ３ ガスケット ３０ 上面部 ３２ 下面部 ３４ 外周部 ３６ 下方突出部 Ｈ1 上面部の初期厚さ寸法 Ｈ2 下面部の初期厚さ寸法 Ｈ1’ 上面部の加工後の厚さ寸法 Ｈ2’ 下面部の加工後の厚さ寸法 DESCRIPTION OF SYMBOLS 1 Container (can with a groove) 10 Upper opening 12 Opening edge 14 Annular protrusion 2 Sealing lid 20 Outer periphery 3 Gasket 30 Upper surface 32 Lower surface 34 Outer periphery 36 Lower protrusion H1 Initial thickness dimension of upper surface H2 Lower surface Initial thickness of H1 'Thickness of upper surface after processing H2' Thickness of lower surface after processing
Claims (2)
た略有底円筒状の鋼製容器と、 前記容器の上部開口を封口するための略円盤状の金属製
封口蓋と、 前記封口蓋の外周部分と、前記容器との間に介設される
合成樹脂製ガスケットとを備えた密閉型電池の容器封口
構造であって、 前記容器の開口縁部を内方へ絞り込むことにより、前記
封口蓋の外周部分が、前記ガスケットを介して、前記容
器の開口縁部と環状突出部との間で押圧固定されてお
り、 前記容器の開口縁部は、その先端側が水平に対して５〜
３０°下方を向く状態に絞り込まれていることを特徴と
する密閉型電池の容器封口構造。1. A substantially bottomed cylindrical steel container having an annular protrusion formed on the inner periphery on the upper opening side, a substantially disk-shaped metal sealing lid for closing the upper opening of the container, A container sealing structure for a sealed battery including an outer peripheral portion of the sealing lid and a gasket made of synthetic resin interposed between the container and the container, wherein an opening edge of the container is narrowed inward. An outer peripheral portion of the sealing lid is pressed and fixed between an opening edge of the container and an annular protrusion through the gasket, and a front end side of the opening edge of the container is horizontal. 5-
A container sealing structure for a sealed battery, wherein the container is narrowed down to 30 °.
の前記ガスケットの圧縮変形量を、当該圧縮変形による
初期圧縮応力が圧縮降伏応力の３０〜８０％の大きさと
なるように設定したことを特徴とする請求項１記載の密
閉型電池の容器封口構造。2. The amount of compressive deformation of the gasket between the opening edge of the container and the annular protrusion is such that the initial compressive stress due to the compressive deformation is 30 to 80% of the compressive yield stress. The container sealing structure for a sealed battery according to claim 1, wherein the container sealing structure is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11211499A JP4223134B2 (en) | 1999-04-20 | 1999-04-20 | Sealed battery container sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11211499A JP4223134B2 (en) | 1999-04-20 | 1999-04-20 | Sealed battery container sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000306557A true JP2000306557A (en) | 2000-11-02 |
| JP4223134B2 JP4223134B2 (en) | 2009-02-12 |
Family
ID=14578530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11211499A Expired - Fee Related JP4223134B2 (en) | 1999-04-20 | 1999-04-20 | Sealed battery container sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4223134B2 (en) |
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