JPS628444A - Complex sealing member for cell - Google Patents
Complex sealing member for cellInfo
- Publication number
- JPS628444A JPS628444A JP60146483A JP14648385A JPS628444A JP S628444 A JPS628444 A JP S628444A JP 60146483 A JP60146483 A JP 60146483A JP 14648385 A JP14648385 A JP 14648385A JP S628444 A JPS628444 A JP S628444A
- Authority
- JP
- Japan
- Prior art keywords
- sealing body
- battery
- sealing member
- annular
- recess
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 103
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000002131 composite material Substances 0.000 claims description 44
- 230000002093 peripheral effect Effects 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 229920003002 synthetic resin Polymers 0.000 claims description 7
- 239000000057 synthetic resin Substances 0.000 claims description 7
- 239000003792 electrolyte Substances 0.000 abstract description 14
- 229910052725 zinc Inorganic materials 0.000 abstract description 12
- 239000011701 zinc Substances 0.000 abstract description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 11
- 229920005989 resin Polymers 0.000 abstract description 11
- 239000011347 resin Substances 0.000 abstract description 11
- 239000008151 electrolyte solution Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229920005672 polyolefin resin Polymers 0.000 description 3
- 239000002987 primer (paints) Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000006182 cathode active material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/154—Lid or cover comprising an axial bore for receiving a central current collector
-
- 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)
Abstract
Description
【発明の詳細な説明】
く技術分野〉
本発明は、電池用複合封口体、更に詳しくは金属製外側
部材とこの外側部材の内面に施された合成樹脂製密封部
材とを具備する電池用複合封口体に関する。Detailed Description of the Invention [Technical Field] The present invention relates to a composite sealing body for batteries, more specifically, a composite sealing body for batteries comprising a metal outer member and a synthetic resin sealing member provided on the inner surface of the outer member. Regarding the sealing body.
〈従来技術〉
電池の外装筒体の開口端を密封すると共に電池の陽極（
又は陰極）端子として機能する電池用封口体として、特
開昭５９−８１８６４号公報に開示されている如く、金
属製外側部材とこの外側部材の内面に施された合成樹脂
製密封部材とを具備する複合封口体が提案されている。<Prior art> The open end of the outer cylindrical body of the battery is sealed, and the anode (
As disclosed in Japanese Unexamined Patent Application Publication No. 59-81864, a battery sealing body functioning as a cathode or cathode terminal is provided with a metal outer member and a synthetic resin sealing member applied to the inner surface of the outer member. A composite sealing body has been proposed.
密封部材は、外側部材の内面における中央領域を除く環
状領域に存在する環状である。The sealing member is annular in an annular region excluding the central region on the inner surface of the outer member.
而して、従来の複合封口体には、電解液の外部への漏出
を比較的長期間に渡って確実に阻止することができず、
例えばラジオ等の電気製品に比較的長期間に渡って電池
を装填し続けた場合、電池から電解液が漏出して電気製
品を汚染乃至毀損することが少なくない、という解決す
べき問題がある。Therefore, conventional composite sealing bodies cannot reliably prevent leakage of electrolyte to the outside for a relatively long period of time.
For example, when a battery is continuously loaded into an electrical appliance such as a radio for a relatively long period of time, there is a problem that electrolyte often leaks from the battery and contaminates or damages the electrical appliance.
〈発明の目的〉
本発明は上記事実に鑑みてなされたものであり、その主
目的は、電解液の外部への漏出を比較的長期間に渡って
充分確実に防止することができる、新規且つ改良された
電池用複合封口体を提供することである。<Object of the Invention> The present invention has been made in view of the above facts, and its main purpose is to provide a novel and novel method that can sufficiently reliably prevent leakage of electrolyte to the outside for a relatively long period of time. An object of the present invention is to provide an improved composite sealing body for a battery.
〈発明の要約〉
本発明者等は鋭意研究の結果、驚くべきことに、複合封
口体の密封部材の所要部位に凹部又は開口を形成して漏
出液溜を規定すると、複合封口体の密封部材の部位まで
電解液が漏出しても、漏出電解液が漏出液溜に収容され
、これによって電解液が電池外部へ漏出することが充分
確実に防止されることを見出した。<Summary of the Invention> As a result of intensive research, the present inventors have surprisingly found that if a recess or opening is formed at a required location in the sealing member of a composite sealing body to define a leakage reservoir, the sealing member of the composite sealing body It has been found that even if the electrolytic solution leaks to the part of the battery, the leaked electrolytic solution is contained in the leaked liquid reservoir, and thereby the leakage of the electrolytic solution to the outside of the battery is sufficiently and reliably prevented.
即ち、本発明によれば、金属製外側部材と、該外側部材
の内面に施された合成□樹脂製密封部材とを具備する、
電池用複合封口体において；該密封部材の外周面には、
漏出液溜を規定する凹部が形成されている、ことを特徴
とする電池用複合封口体が提供される。That is, according to the present invention, it comprises a metal outer member and a synthetic □ resin sealing member applied to the inner surface of the outer member.
In a composite sealing body for batteries; on the outer peripheral surface of the sealing member,
A composite sealing body for a battery is provided, which is characterized in that a recess defining a leakage liquid reservoir is formed.
そしてまた、本発明によれば、金属製外側部材と、該外
側部材の内面に施された合成樹脂製密封部材とを具備す
る、電池用複合封口体において；該密封部材は、該外側
部材の外周縁を越えて該外側部材の外面上に延在する環
状付加部を有し、該環状付加部には、漏出液溜を規定す
る凹部又は開口が形成されている、ことを特徴とする電
池用複合封口体が提供される。Further, according to the present invention, there is provided a composite sealing body for a battery comprising a metal outer member and a synthetic resin sealing member provided on the inner surface of the outer member; A battery characterized in that it has an annular appendage extending beyond the outer periphery onto the outer surface of the outer member, the annular appendage being formed with a recess or opening defining a leakage reservoir. A composite closure for use in the present invention is provided.
〈発明の好適具体例〉
以下、添付図面を参照して、本発明に従って構成された
電池用複合封口体の具体例について説明する。<Preferred Specific Examples of the Invention> Hereinafter, specific examples of a composite sealing body for a battery constructed according to the present invention will be described with reference to the accompanying drawings.
本発明に従って構成された電池用複合封口体の一興体例
を図示している第１図を参照して説明すると、全体を番
号２で示す図示の封口体は、外側部材４と密封部材６と
を具備している。ブリキ板の如き適宜の金属板から形成
されている外側部材４の中央領域８は、外側（第１図に
おいて上側）に膨出せしめられている。かかる中央領域
８は、後の説明から明らかになる如く、電池の陽極端子
を構成する。外側部材４の環状頭載１０には、補強用環
状段部１２が形成されているのが好都合である。外側部
材４の内面（第１図において下面）に施されている密封
部材６は、オレフィン系樹脂（かかるオレフィン系樹脂
の詳細については上記特開昭５９−８１８６４号公報を
参照されたい）の如き熱可塑性樹脂であるのが好ましい
適宜の合成樹脂から形成することができる。かかる密封
部材６は、射出成形の如き適宜の成形法によって、外側
部材４の内面上の所要位置に形成、或いは外側部材４と
は別個に形成して外側部材４の内面上の所要位置に配置
することもできるが、例えば上記特開昭５９−８１８６
４号公報に開示されている如く、外側部材４の内面上の
所要位置に型押成形することによって形成するのが好都
合である。An explanation will be given with reference to FIG. 1 showing an example of a composite battery sealing body constructed in accordance with the present invention. Equipped with The central region 8 of the outer member 4, which is formed from a suitable metal plate such as a tin plate, is bulged outwardly (upwardly in FIG. 1). Such central region 8 constitutes the anode terminal of the battery, as will become clear from the subsequent description. Advantageously, the annular headrest 10 of the outer member 4 is formed with a reinforcing annular step 12 . The sealing member 6 applied to the inner surface (lower surface in FIG. 1) of the outer member 4 is made of an olefin resin (for details of such olefin resin, please refer to the above-mentioned Japanese Patent Application Laid-Open No. 59-81864). It can be formed from any suitable synthetic resin, preferably a thermoplastic resin. The sealing member 6 is formed at a predetermined position on the inner surface of the outer member 4 by an appropriate molding method such as injection molding, or formed separately from the outer member 4 and arranged at a predetermined position on the inner surface of the outer member 4. However, for example, the above-mentioned Japanese Patent Application Laid-Open No. 59-8186
As disclosed in Japanese Patent Application No. 4, it is convenient to form it by stamping at a predetermined position on the inner surface of the outer member 4.
密封部材６は、外側部材４の内面における中央領域８に
は存在せず、環状領域ｌＯに存在する環形状である。図
示の具体例における密封部材６は、その内周縁部から下
方に突出する筒状突部１４を有する。また、密封部材６
の外周縁部１６は、外側部材４の外周縁を越えて張出し
、そして滑らかな曲線を形成して下方へ垂下している。The sealing member 6 has an annular shape and does not exist in the central region 8 on the inner surface of the outer member 4, but exists in the annular region IO. The sealing member 6 in the illustrated example has a cylindrical protrusion 14 projecting downward from its inner peripheral edge. In addition, the sealing member 6
The outer peripheral edge 16 of the outer member 4 extends beyond the outer peripheral edge of the outer member 4, forms a smooth curve, and hangs downward.
更に、図示の具体例においては、外側部材４の内面にお
ける環状領域１０には、酸変性オレフィン樹脂又は酸化
ポリエチレン樹脂を含有する熱接着性プライマー塗膜（
かかる塗膜１８の詳細については上記特開昭５９−８１
８６４号公報を参照されたい）であるのが好都合である
接着性プライマー塗膜１日が塗布されており、外側部材
４の内面に密封部材６を型押成形すると、上記接着性プ
ライマー塗膜１８によって外側部材４の内面に充分強固
に密封部材６が接合されている。Furthermore, in the illustrated example, the annular region 10 on the inner surface of the outer member 4 is coated with a heat-adhesive primer coating containing an acid-modified olefin resin or an oxidized polyethylene resin.
For details of the coating film 18, see the above-mentioned Japanese Patent Application Laid-Open No. 59-81.
864) is applied, and upon stamping the sealing member 6 on the inner surface of the outer member 4, said adhesive primer coating 18 is applied. The sealing member 6 is joined to the inner surface of the outer member 4 with sufficient strength.
図示の封口体２の上述した構成は既に公知のものである
が、本発明によって構成された封口体２においては、密
封部材６の外周面、更に詳しくは密封部材６における上
記外周縁部１６の外周面に凹部が形成されていることが
重要である。図示の具体例においては、上記外周縁部１
６の外周面に周方向に間隔を置いて複数個の凹部２０が
形成されている。かかる凹部２０は、後の説明から明ら
かになる如く、漏出液溜を規定する。Although the above-described structure of the illustrated sealing body 2 is already known, in the sealing body 2 constructed according to the present invention, the outer circumferential surface of the sealing member 6, more specifically, the outer circumferential edge portion 16 of the sealing member 6. It is important that a recess is formed on the outer peripheral surface. In the illustrated example, the outer peripheral edge 1
A plurality of recesses 20 are formed on the outer circumferential surface of 6 at intervals in the circumferential direction. Such a recess 20 defines a leakage reservoir, as will become clear from the following description.
第２図は、第１図に図示する複合封口体２を陽極側封口
体として使用した電池の一例を図示している。全体を番
号２２で示す電池は、陰極活物質として機能すると共に
有底筒状容器としても機能する亜鉛罐２４を含んでいる
。この亜鉛罐２４内には、その中央部に位置する炭素集
電体２６、この炭素集電体２６を囲繞する陽極合剤２８
、及び陽極合剤２８と亜鉛罐２４との間に介在せしめら
れている電解質糊層３０が収容されている。上記亜鉛罐
２４の外側には、電気絶縁性樹脂チューブ３２が配設さ
れており、そして更にその外側には、金属板製外装筒体
３４が配設されている。FIG. 2 shows an example of a battery using the composite sealing body 2 shown in FIG. 1 as the anode side sealing body. The battery, designated as a whole by the numeral 22, includes a zinc can 24 which functions as a cathode active material and also functions as a bottomed cylindrical container. Inside this zinc can 24, there is a carbon current collector 26 located in the center thereof, and an anode mixture 28 surrounding this carbon current collector 26.
, and an electrolyte glue layer 30 interposed between the anode mixture 28 and the zinc can 24. An electrically insulating resin tube 32 is disposed on the outside of the zinc can 24, and an exterior cylindrical body 34 made of a metal plate is further disposed on the outside thereof.
上記複合封口体２は、亜鉛罐２４、樹脂チューブ３２及
び外装・筒体３４の上端部に組合されて、電池２２の上
面開口端を密封する。亜鉛罐２４の中央部に位置する上
記炭素集電体２６は、複合封口体２における密封部材６
を貫通して延びて、外側部材４の膨出中央領域８の内面
に接触せしめられており、かくして外側部材４の膨出中
央領域８は電池の陽極端子として機能する。第２図と共
に第１図を参照して説明すると、亜鉛罐２４の上端部は
、密封部材６の外周縁部１６の内面乃至下面に密封係合
せしめられている。樹脂チューブ３２は、密封部材６の
外周縁部１６の外周面に密に接触して上方へ延び、そし
て更に、外側部材４の外面周縁部まで延びてそこに密に
接触せしめられている。樹脂チューブ３２の上端部、即
ち外側部材４の外周周縁部上に位置する部分の上面上に
は、適宜の合成樹脂から形成されているのが好ましい環
状クッション部材３６が配設されている。そして、金属
板製外装筒体３４の上端部は、内側にカールせしめられ
ており、その先端は上記環状クッション部材３６及び樹
脂チューブ３２を介して複合封口体２の外側部材４の外
面に充分強固に押付けられている。The composite sealing body 2 is combined with the upper end portions of the zinc can 24, the resin tube 32, and the exterior/cylindrical body 34 to seal the upper open end of the battery 22. The carbon current collector 26 located in the center of the zinc can 24 is the sealing member 6 in the composite sealing body 2.
and is brought into contact with the inner surface of the bulged central region 8 of the outer member 4, so that the bulged central region 8 of the outer member 4 functions as the positive terminal of the cell. Referring to FIG. 1 together with FIG. 2, the upper end of the zinc can 24 is hermetically engaged with the inner or lower surface of the outer peripheral edge 16 of the sealing member 6. The resin tube 32 extends upwardly in close contact with the outer circumferential surface of the outer circumferential edge 16 of the sealing member 6, and further extends to and tightly contacts the outer circumferential edge of the outer member 4. On the upper end of the resin tube 32, that is, on the upper surface of the portion located on the outer peripheral edge of the outer member 4, an annular cushion member 36 is disposed, which is preferably made of a suitable synthetic resin. The upper end of the metal plate exterior cylinder 34 is curled inward, and its tip is sufficiently firmly attached to the outer surface of the outer member 4 of the composite sealing body 2 via the annular cushion member 36 and the resin tube 32. is being pressed against.
第２図と共に第１図を参照して説明を続けると、上述し
た通りの構成の電池２２においては、亜鉛罐２４、樹脂
チューブ３２、環状バッキング部材３６及び外装筒体３
４と複合封口体２との協働により、電池２２の上端部が
数乗に密封され、従って、通常の状態においては電解液
が外部に漏出することはない。しかしながら、電解の進
行による水素発生に起因する内圧の過剰増大等が発生す
ると、電解液が密封部材６と亜鉛罐２４との間、密封部
材６と樹脂チューブ３２との間を通って流動してしまう
ことが経験的に判明している。Continuing the explanation with reference to FIG. 1 together with FIG. 2, the battery 22 configured as described above includes a zinc can 24, a resin tube 32, an annular backing member 36, and an exterior cylindrical body 3.
4 and the composite sealing body 2, the upper end of the battery 22 is sealed to a certain power, so that the electrolyte will not leak outside under normal conditions. However, when an excessive increase in internal pressure occurs due to hydrogen generation as electrolysis progresses, the electrolyte flows between the sealing member 6 and the zinc can 24 and between the sealing member 6 and the resin tube 32. Experience has shown that it does.
然るに、本発明に従って構成された複合封口体２を使用
した電池２２においては、過剰内圧等に起因して密封部
材６の内面乃至下面と亜鉛罐２４の上端部との間を通っ
て流動し、そして更に密封部材６の外周面と樹脂チュー
ブ３２の内面との間を通って流動する漏出電解液は、密
封部材６の外周面に形成されている凹部２０によって規
定されている空所即ち漏出液溜に積極的に導かれて、そ
こに滞溜せしめられる。かくして、漏出電解液が更に上
方へ流動して外部へ漏出することが充分確実に防止され
る。However, in the battery 22 using the composite sealing body 2 constructed according to the present invention, due to excessive internal pressure or the like, the fluid flows between the inner surface or lower surface of the sealing member 6 and the upper end of the zinc can 24. Further, the leaked electrolyte flowing between the outer circumferential surface of the sealing member 6 and the inner surface of the resin tube 32 is absorbed into the cavity defined by the recess 20 formed on the outer circumferential surface of the sealing member 6. They are actively guided by the reservoir and forced to accumulate there. In this way, the leaked electrolyte is sufficiently prevented from flowing further upward and leaking to the outside.
第３図は、複合封口体２における密封部材６の外周縁部
１６の外周面に形成されている凹部の変形例を図示して
いる。第４図に図示する変形例においては、密封部材６
の外周縁部１６の外周面に、周方向に連続して延びる環
状上側凹部２０ａ及び環状下側凹部２０ｂが形成されて
いる。かかる凹部２０ａ及び２０ｂも、第１図乃至第３
図に図示する複合封口体２における凹部２０と同様に、
漏出液溜を規定し、漏出電解液が電池外部へ漏出するこ
とを充分確実に防止する。。FIG. 3 illustrates a modification of the recess formed on the outer circumferential surface of the outer circumferential edge 16 of the sealing member 6 in the composite sealing body 2. As shown in FIG. In the modification shown in FIG. 4, the sealing member 6
An annular upper recess 20a and an annular lower recess 20b that extend continuously in the circumferential direction are formed on the outer peripheral surface of the outer peripheral edge portion 16 of. Such recesses 20a and 20b are also shown in FIGS. 1 to 3.
Similar to the recess 20 in the composite sealing body 2 illustrated in the figure,
To define a leakage liquid reservoir and sufficiently reliably prevent leakage electrolyte from leaking to the outside of the battery. .
密封部材６の外周縁部１６の外周面に形成すべき凹部は
、漏出液溜を規定することができるものである限り任意
の形態でよく、所望ならば、外周縁部１６の外周面を所
謂粗面にせしめることによって多数の小さい凹部を分散
配設することもできる。The recess to be formed on the outer circumferential surface of the outer circumferential edge 16 of the sealing member 6 may have any form as long as it can define a leakage liquid reservoir, and if desired, the outer circumferential surface of the outer circumferential edge 16 may be By making the surface rough, a large number of small recesses can be arranged in a distributed manner.
第４図及び第５図は、本発明に従って構成された電池用
複合封口体の他の具体例を図示している。FIGS. 4 and 5 illustrate other specific examples of composite sealing bodies for batteries constructed according to the present invention.
第４図及び第５図に図示する具体例においては、密封部
材６の外周縁部１６は、外側部材４の外周縁を越えて上
方へ延び、次いで半径方向内方へ外側部材４の外面上に
延在する環状付加部３８を有する。かような環状付加部
３８を有する密封部材６も、第１図に図示する複合封口
体２における密封部材６と同様に、適宜の方式によって
形成することができるが、外側部材４の所要位置に型押
成形することによって好都合に形成することができる。In the embodiment illustrated in FIGS. 4 and 5, the outer circumferential edge 16 of the sealing member 6 extends upwardly beyond the outer circumferential edge of the outer member 4 and then radially inwardly onto the outer surface of the outer member 4. It has an annular appendage 38 extending to. The sealing member 6 having such an annular additional portion 38 can be formed by an appropriate method similarly to the sealing member 6 in the composite sealing body 2 shown in FIG. It can be conveniently formed by stamping.
第４図及び第５図に図示する複合封口体２においては、
密封部材６が上記環状付加部３８を有する故に、第４図
を参照することによって容易に理解される如く、密封部
材６が外側部材４を抱込んだ構造であり、かかる抱込み
構造によって外側部材４と密封部材６とが機械的に一体
に保持される。In the composite sealing body 2 illustrated in FIGS. 4 and 5,
Since the sealing member 6 has the annular additional portion 38, as can be easily understood by referring to FIG. 4 and the sealing member 6 are mechanically held together.
従って、外側部材４の内面に接着性プライマー塗膜（第
１図に番号１８で示す塗膜）を施して密封部材６を外側
部材４に接着せずとも、外側部材４と密封部材６との一
体化が達成される。Therefore, the sealing member 6 does not need to be bonded to the outer member 4 by applying an adhesive primer coating (coating indicated by number 18 in FIG. 1) to the inner surface of the outer member 4. Integration is achieved.
密封部材６が上記環状付加部３８を有する形態である場
合においても、第１図に図示する複合封口体２の場合と
同様に、密封部材６の外周縁部１６の外周面に、漏出液
溜を規定する適宜の凹部を形成し、かくして電解液の外
部への漏出を充分確実に防止することができる。しかし
ながら、密封部材６が上記環状付加部３８を有する形態
である場合には、密封部材６の外周縁部１６の外周面に
適宜の凹部を形成することに代えて或いはこれに加えて
、上記環状付加部３８に漏出液溜を規定する凹部或いは
開口を形成することもできる。第４図及び第５図に図示
する具体例においては、環状材−加部３８の外周縁部に
、周方向に間隔を置いて複数個の開口４０が形成されて
いる。開口４０（又は凹部）は、環状付加部３８の内周
縁部に形成することもできるが、後に第６図を参照して
説明する如く、外装筒体３４の先端が押圧せしめられる
部位よりも半径方向外方に位置する外周縁部に形成する
のが好ましい。勿論、開口４０に代えて凹部を形成する
こともでき、凹部を形成する場合は、周方向に連続して
延びる環状凹部でもよい。また、環状付加部３８の上面
外周縁部を所謂粗面にせしめることによって多数の小さ
い凹部を分散配設することもできる。Even when the sealing member 6 has the annular additional portion 38, a leakage liquid reservoir is formed on the outer circumferential surface of the outer peripheral edge portion 16 of the sealing member 6, as in the case of the composite sealing body 2 illustrated in FIG. By forming an appropriate recess that defines the electrolytic solution, leakage of the electrolytic solution to the outside can be sufficiently and reliably prevented. However, when the sealing member 6 has the annular additional portion 38, instead of or in addition to forming an appropriate recess on the outer circumferential surface of the outer peripheral edge 16 of the sealing member 6, the annular additional portion 38 is formed. It is also possible to form a recess or opening in the appendage 38 to define a leakage reservoir. In the specific example shown in FIGS. 4 and 5, a plurality of openings 40 are formed in the outer peripheral edge of the annular member-adding portion 38 at intervals in the circumferential direction. The opening 40 (or recess) may be formed at the inner peripheral edge of the annular additional portion 38, but as will be explained later with reference to FIG. It is preferable to form it on the outer peripheral edge located outward in the direction. Of course, a recess may be formed in place of the opening 40, and if the recess is formed, it may be an annular recess extending continuously in the circumferential direction. Further, by making the outer peripheral edge of the upper surface of the annular additional portion 38 a so-called rough surface, a large number of small recesses can be arranged in a distributed manner.
第４図及び第５図に図示する複合封口体２における上述
した構成以外は、第１図に図示する複合封口体２と実質
上同一であるので説明を省略する。Except for the above-mentioned configuration, the composite sealing body 2 shown in FIGS. 4 and 5 is substantially the same as the composite sealing body 2 shown in FIG. 1, so the explanation will be omitted.
第６図は、第４図及び第５図に図示する複合封口体２を
陽極側封口体として使用した電池の一例を図示している
。第６図に図示する電池２２においては、密封部材６に
おける上記環状付加部３日の内周縁部自体をクッション
部材として有効に使用し得る故に、別個の環状クッショ
ン部材（第２図に番号３６で示す環状クッション部材）
の使用を省略することができる。即ち、第６図に図示す
る電池２２においては、金属板製外装筒体３４の内側に
カールせしめられた上端部の先端は、樹脂チューブ３２
と共にその下側に位置する上記環状付加部３８の内周縁
部を介して、複合封口体２の外側部材４の外面に充分強
固に押付けられている。FIG. 6 shows an example of a battery using the composite sealing body 2 shown in FIGS. 4 and 5 as the anode side sealing body. In the battery 22 shown in FIG. 6, since the inner peripheral edge of the annular additional portion of the sealing member 6 can be effectively used as a cushion member, a separate annular cushion member (indicated by number 36 in FIG. annular cushion member shown)
can be omitted. That is, in the battery 22 shown in FIG.
At the same time, the annular additional portion 38 is pressed sufficiently firmly against the outer surface of the outer member 4 of the composite sealing body 2 via the inner circumferential edge portion of the annular additional portion 38 located below the annular additional portion 38 .
第６図に図示する電池２２の上述した構成以外は、第２
図に図示する電池２２と実質上同一であるので説明を省
略する。Except for the above-described configuration of the battery 22 shown in FIG.
Since it is substantially the same as the battery 22 shown in the figure, the explanation will be omitted.
第６図に図示する電池２２においては、過剰内圧等に起
因して密封部材６の内面乃至下面と亜鉛罐２４の上端部
との間を通って流動し、そして更に密封部材６の外周面
乃至その環状付加部３８の上面と樹脂チューブ３２の内
面との間を通って流動する漏出電解液は、密封部材６の
環状付加部３８に形成されている開口４０によって規定
されている空所即ち漏出液溜に積極的に導かれて、そこ
に滞溜せしめられる。かくして、漏出電解液が外部へ漏
出することが充分確実に防止される。In the battery 22 shown in FIG. 6, due to excessive internal pressure or the like, the flow passes between the inner surface or lower surface of the sealing member 6 and the upper end of the zinc can 24, and further flows through the outer peripheral surface or the lower surface of the sealing member 6. The leaking electrolyte flowing between the upper surface of the annular appendage 38 and the inner surface of the resin tube 32 is directed to the cavity defined by the opening 40 formed in the annular appendage 38 of the sealing member 6. It is actively led to the liquid reservoir and is forced to accumulate there. In this way, leakage of the leaked electrolyte to the outside can be sufficiently prevented.
第１図は、本発明に従って構成された電池用複合封口体
の一興体例を、一部を断面で示す側面図。
第２図は、第１図の複合封口体を陽極側封口体として使
用した電池の一例を、一部を断面で示す側面図。
第３図は、密封部材の外周面に形成された凹部の変形例
を例示するための、第１図と同様に一部を断面で示す側
面図。
第４図は、本発明に従って構成された電池用複合封口体
の他の具体例を、第１図と同様に一部を断面で−示す側
面図。
第５図は、第４図に図示する電池用複合封口体の斜面図
。
第６図は、第４図及び第５図の複合封口体を陽極側封口
体として使用した電池の一例を、第２図と同様に一部を
断面で示す側面図。
２・・・電池用複合封口体
４・・・外側部材
６・・・密封部材
２０．２０ａ及び２０ ｂ ・・・凹 部２２・・・電
池
３８・・・密封部材の環状付加部
４０・・・開 口
特許出願人 日本クラウンコルク株式会社代理人 弁
理士 小 野 尚 純第１図
第３図
第５図FIG. 1 is a side view, partially in cross section, of an example of a composite sealing body for a battery constructed according to the present invention. FIG. 2 is a side view, partially in cross section, of an example of a battery using the composite sealing body of FIG. 1 as an anode side sealing body. FIG. 3 is a side view, partially in cross section, similar to FIG. 1, for illustrating a modification of the recess formed on the outer peripheral surface of the sealing member. FIG. 4 is a side view, partially in cross-section, similar to FIG. 1, of another specific example of the composite sealing body for batteries constructed according to the present invention. FIG. 5 is a perspective view of the composite sealing body for a battery shown in FIG. 4. FIG. 6 is a side view, partially in cross section, similar to FIG. 2, of an example of a battery using the composite sealing body of FIGS. 4 and 5 as an anode side sealing body. 2...Battery composite sealing body 4...Outer member 6...Sealing members 20, 20a and 20b...Concave portion 22...Battery 38...Annular additional portion 40 of the sealing member ...Aperture patent applicant: Japan Crown Cork Co., Ltd. Agent Patent attorney: Hisashi Ono Figure 1 Figure 3 Figure 5
Claims (1)
成樹脂製密封部材とを具備する、電池用複合封口体にお
いて； 該密封部材の外周面には、漏出液溜を規定する凹部が形
成されている、ことを特徴とする電池用複合封口体。 ２、該密封部材の外周面には、該凹部が周方向に間隔を
置いて複数個形成されている、特許請求の範囲第１項記
載の電池用複合封口体。 ３、該凹部は該密封部材の外周面を周方向に連続して延
びる環状である、特許請求の範囲第１項記載の電池用複
合封口体。 ４、金属製外側部材と、該外側部材の内面に施された合
成樹脂製密封部材とを具備する、電池用複合封口体にお
いて； 該密封部材は、該外側部材の外周縁を越えて該外側部材
の外面上に延在する環状付加部を有し、該環状付加部に
は、漏出液溜を規定する凹部又は開口が形成されている
、ことを特徴とする電池用複合封口体。 ５、該凹部又は開口は、該環状付加部の外周縁部に形成
されている、特許請求の範囲第４項記載の電池用複合封
口体。 ６、該環状付加部の外周縁部には、該凹部又は開口が周
方向に間隔を置いて複数個形成されている、特許請求の
範囲第５項記載の電池用複合封口体。 ７、該環状付加部の外周縁部には、周方向に連続して延
びる該凹部が形成されている、特許請求の範囲第５項記
載の電池用複合封口体。[Claims] 1. A composite sealing body for a battery comprising a metal outer member and a synthetic resin sealing member provided on the inner surface of the outer member; A composite sealing body for a battery, characterized in that a concave portion defining a liquid reservoir is formed. 2. The composite sealing body for a battery according to claim 1, wherein a plurality of the recesses are formed at intervals in the circumferential direction on the outer peripheral surface of the sealing member. 3. The composite sealing body for a battery according to claim 1, wherein the recess is annular and extends continuously in the circumferential direction on the outer peripheral surface of the sealing member. 4. In a composite sealing body for a battery, comprising a metal outer member and a synthetic resin sealing member applied to the inner surface of the outer member; 1. A composite sealing body for a battery, characterized in that the annular appendage extends on the outer surface of the member, and the annular appendage is formed with a recess or opening defining a leakage reservoir. 5. The composite sealing body for a battery according to claim 4, wherein the recess or opening is formed at the outer peripheral edge of the annular additional portion. 6. The composite sealing body for a battery according to claim 5, wherein a plurality of the recesses or openings are formed at intervals in the circumferential direction on the outer peripheral edge of the annular additional portion. 7. The composite sealing body for a battery according to claim 5, wherein the concave portion extending continuously in the circumferential direction is formed on the outer peripheral edge of the annular additional portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60146483A JPS628444A (en) | 1985-07-05 | 1985-07-05 | Complex sealing member for cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60146483A JPS628444A (en) | 1985-07-05 | 1985-07-05 | Complex sealing member for cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS628444A true JPS628444A (en) | 1987-01-16 |
Family
ID=15408656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60146483A Pending JPS628444A (en) | 1985-07-05 | 1985-07-05 | Complex sealing member for cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS628444A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5005094A (en) * | 1988-12-12 | 1991-04-02 | Alps Electric Co., Ltd. | Mode changeover mechanism with flat cam surface for a tape player |
| US5430101A (en) * | 1987-10-14 | 1995-07-04 | Sumitomo Dow Limited | Delustered rubber modified styrenic blends |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5433049U (en) * | 1977-08-10 | 1979-03-03 |
-
1985
- 1985-07-05 JP JP60146483A patent/JPS628444A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5433049U (en) * | 1977-08-10 | 1979-03-03 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5430101A (en) * | 1987-10-14 | 1995-07-04 | Sumitomo Dow Limited | Delustered rubber modified styrenic blends |
| US5005094A (en) * | 1988-12-12 | 1991-04-02 | Alps Electric Co., Ltd. | Mode changeover mechanism with flat cam surface for a tape player |
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