JPH097572A - Cylindrical alkaline battery - Google Patents
Cylindrical alkaline batteryInfo
- Publication number
- JPH097572A JPH097572A JP15590895A JP15590895A JPH097572A JP H097572 A JPH097572 A JP H097572A JP 15590895 A JP15590895 A JP 15590895A JP 15590895 A JP15590895 A JP 15590895A JP H097572 A JPH097572 A JP H097572A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- gasket
- thin portion
- annular thin
- cylindrical 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.)
- Pending
Links
Classifications
-
- Y02E60/12—
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Primary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、筒型アルカリ電池の封
口構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing structure for a cylindrical alkaline battery.
【０００２】[0002]
【従来の技術】筒型アルカリ電池の一つであるアルカリ
乾電池は、電池を１個又は複数個直列に接続した状態で
回路を短絡させたり、あるいは極性を誤って機器に使用
した場合に、電池内部で強いガス発生反応が生じて電池
が破裂するという問題点があった。2. Description of the Related Art Alkaline dry batteries, which are one of the tubular alkaline batteries, are batteries that are short-circuited in the state where one or more batteries are connected in series, or when they are used in equipment with the wrong polarity. There has been a problem that a strong gas generating reaction occurs inside and the battery bursts.
【０００３】従来から、この問題点を解決するために、
防爆機構を備えた種々の封口構造が検討されてきた。そ
の代表的な封口構造を図面を用いて具体的に説明する。Conventionally, in order to solve this problem,
Various sealing structures having an explosion-proof mechanism have been studied. The typical sealing structure will be specifically described with reference to the drawings.
【０００４】図１は、従来のアルカリ乾電池の半載断面
図である。電池ケース１内に、二酸化マンガンと黒鉛か
らなる正極合剤２を円筒状に成型して挿入し、その内側
に、苛性カリ、粘性物質及び亜鉛からなる負極ゲル状物
質３をセパレーター４を介して注入し、環状連結部５と
環状薄肉部６を有する樹脂製ガスケット７、負極集電体
８、ガス逸散孔９を有する負極端子底板１０とを一体化
した部品を、電池ケース１の開口部１１に挿入し、上記
開口部１１を内側へ折り曲げ加工することにより密閉封
口されている。正極端子１２は電池ケース１の底部に溶
接により固定され、電池外周側面部分は外装ラベル１３
で被覆されている。FIG. 1 is a half-mounting sectional view of a conventional alkaline dry battery. A positive electrode mixture 2 made of manganese dioxide and graphite is molded into a cylindrical shape and inserted into a battery case 1, and a negative electrode gel-like substance 3 made of caustic potash, a viscous substance and zinc is injected through a separator 4 into the inside thereof. Then, the resin gasket 7 having the annular connecting portion 5 and the annular thin portion 6, the negative electrode current collector 8, and the negative electrode terminal bottom plate 10 having the gas escape hole 9 are integrated into the opening 11 of the battery case 1. , And the opening 11 is bent inward to be hermetically sealed. The positive electrode terminal 12 is fixed to the bottom of the battery case 1 by welding, and the outer peripheral side surface of the battery has an outer label 13.
It is covered with.
【０００５】以上の様に構成されたアルカリ乾電池で
は、電池内部でガスが発生し電池ケース１内の圧力があ
る一定圧力以上に高まると、樹脂製ガスケット７の環状
薄肉部６が破断し、その部分からガスが逸散する。逸散
したガスは、負極端子底板１０のガス逸散孔９から電池
外部へ放出され、電池ケース１の内圧が低下し電池の破
裂が回避される。In the alkaline dry battery constructed as described above, when gas is generated inside the battery and the pressure in the battery case 1 rises above a certain pressure, the annular thin portion 6 of the resin gasket 7 is broken, Gas escapes from the part. The escaped gas is discharged from the gas escape hole 9 of the negative electrode terminal bottom plate 10 to the outside of the battery, and the internal pressure of the battery case 1 is reduced to prevent the battery from bursting.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記の
構成では、例えば電池を１個又は複数個直列に接続した
状態で回路を短絡させた場合には、短絡回路を流れる電
流により電池自体の内部温度が急激に上昇し、樹脂製ガ
スケットが高温のために軟化し、かつ電池内部で発生し
たガス圧力により変形する。このときガスケットの環状
連結部５が負極端子底板１０の下面に沿うように湾曲し
ながら伸びきってしまうため、環状薄肉部６が破断しな
い事態が発生する。このような場合には、樹脂製ガスケ
ット７の環状薄肉部６の防爆機構が機能せず、電池が破
裂するという問題点を有していた。However, in the above configuration, when the circuit is short-circuited in the state where one or more batteries are connected in series, the internal temperature of the battery itself is increased by the current flowing through the short-circuit. Rapidly rises, the resin gasket softens due to the high temperature, and is deformed by the gas pressure generated inside the battery. At this time, the annular connecting portion 5 of the gasket extends while curving along the lower surface of the negative electrode terminal bottom plate 10, so that the annular thin portion 6 is not broken. In such a case, the explosion-proof mechanism of the annular thin portion 6 of the resin gasket 7 does not function, and the battery has a problem of bursting.
【０００７】図２は、従来のアルカリ乾電池の封口部分
の拡大断面図であって、電池内部が高温になり樹脂製ガ
スケット７が軟化し環状連結部５が湾曲し伸張するた
め、電池内部圧力が高まっても環状薄肉部６が破断しな
い状態を示している。FIG. 2 is an enlarged cross-sectional view of the sealing portion of a conventional alkaline dry battery, in which the temperature inside the battery becomes high, the resin gasket 7 is softened, and the annular connecting portion 5 is curved and stretched. It shows a state in which the annular thin portion 6 does not break even if it increases.
【０００８】本発明は、上記問題点を解決するもので、
安定して機能する防爆機構を持つ信頼性の高い筒型アル
カリ電池を提供することを目的とする。The present invention solves the above problems,
An object of the present invention is to provide a highly reliable cylindrical alkaline battery having a stable explosion-proof mechanism.
【０００９】[0009]
【課題を解決するための手段】この目的を達成するため
に、本発明の筒型アルカリ電池は、発電要素を収容した
電池ケースと、この電池ケースの開口部を閉塞し、ガス
圧力により膨脹する環状薄肉部を有する樹脂製ガスケッ
トと、ガスケット中央部を貫通する集電体を有し、前記
集電体の周縁に前記ガスケットの環状薄肉部に対向する
刃突起を設けたことを特徴とする。In order to achieve this object, a cylindrical alkaline battery of the present invention closes a battery case accommodating a power generating element and an opening of the battery case, and expands by gas pressure. A resin gasket having an annular thin portion and a current collector penetrating a central portion of the gasket are provided, and a blade protrusion facing the annular thin portion of the gasket is provided on a peripheral edge of the current collector.
【００１０】[0010]
【作用】この構成によって、電池内部温度の急激な上昇
に伴ってガス発生により電池内圧が高まった場合、ガス
ケットの環状薄肉部を集電体の刃突起が確実に破断する
ことにより防爆機構が正常に機能し、電池の破裂を防止
することができる。With this structure, when the internal pressure of the battery increases due to the gas generation due to the rapid increase of the internal temperature of the battery, the blade projection of the current collector surely breaks the annular thin part of the gasket to ensure the normal explosion-proof mechanism. To prevent the battery from bursting.
【００１１】[0011]
【実施例】以下、本発明の一実施例について説明する。EXAMPLES An example of the present invention will be described below.
【００１２】図３は本発明の一実施例におけるアルカリ
乾電池の半載断面図である。図中、負極集電体８の周縁
にガスケット７の環状薄肉部６に対向させて刃突起８′
を設けたこと以外は、図１に示した従来のアルカリ乾電
池と同様の構成であるので、その詳細な説明は省略す
る。尚、本実施例では、前記刃突起８′は負極集電体の
周縁をガスケットの環状薄肉部６に向かって屈曲させる
ことにより形成した。FIG. 3 is a half sectional view of an alkaline dry battery according to an embodiment of the present invention. In the figure, a blade projection 8'is provided on the periphery of the negative electrode collector 8 so as to face the annular thin portion 6 of the gasket 7.
Since the configuration is the same as that of the conventional alkaline dry battery shown in FIG. 1 except that the above is provided, detailed description thereof will be omitted. In this embodiment, the blade projection 8'is formed by bending the peripheral edge of the negative electrode current collector toward the annular thin portion 6 of the gasket.
【００１３】以上のように構成されたアルカリ乾電池
は、例えば電池を１個又は複数個直列に接続した状態で
外部短絡させた場合などのように、電池内部温度の急激
な上昇にともなってガス発生が起こり電池内圧が高まっ
た場合には、図４に示すように、負極集電体８の刃突起
８′がガスケット７の環状薄肉部６を確実に破断し、ガ
スが電池外部へ逸散するので電池の破裂は起こらない。The alkaline dry battery constructed as described above generates gas when the internal temperature of the battery rapidly rises, for example, when one or more batteries are connected in series and externally short-circuited. When the internal pressure of the battery rises and the internal pressure of the battery increases, the blade projection 8'of the negative electrode current collector 8 reliably breaks the annular thin portion 6 of the gasket 7 as shown in FIG. 4, and the gas escapes to the outside of the battery. Therefore, the battery does not explode.
【００１４】次に、本発明の実施例のＬＲ２０型電池と
従来のＬＲ２０型電池を、それぞれ４個直列に接続した
状態で回路を短絡させ、電池の防爆機構の作動の有無を
１００組の電池で実験した。その結果を表１に示す。Next, the LR20 type battery according to the embodiment of the present invention and the conventional LR20 type battery are connected in series, four circuits each being short-circuited to determine whether or not the battery explosion-proof mechanism is activated in 100 sets of batteries. I experimented with. Table 1 shows the results.
【００１５】[0015]
【表１】 [Table 1]
【００１６】表１から明らかなように、本発明では防爆
機構の安定性に著しい効果がある。As is clear from Table 1, the present invention has a remarkable effect on the stability of the explosion-proof mechanism.
【００１７】[0017]
【発明の効果】以上のように本発明によれば、集電体の
周縁にガスケットの環状薄肉部に対向する刃突起を設け
たことにより、電池が高温度になった場合でも安定して
機能する信頼性の高い防爆機構を有する筒型アルカリ電
池を実現できるものである。As described above, according to the present invention, the blade projections are provided on the periphery of the current collector so as to face the annular thin portion of the gasket, so that the battery functions stably even when the temperature of the battery becomes high. A cylindrical alkaline battery having a highly reliable explosion-proof mechanism can be realized.
【図１】従来のアルカリ乾電池の半裁断面図FIG. 1 is a half-cut sectional view of a conventional alkaline battery.
【図２】従来のアルカリ乾電池の封口部分の拡大断面図FIG. 2 is an enlarged sectional view of a sealing portion of a conventional alkaline dry battery.
【図３】本発明の一実施例におけるアルカリ乾電池の半
裁断面図FIG. 3 is a half sectional view of an alkaline dry battery according to an embodiment of the present invention
【図４】本発明の一実施例におけるアルカリ乾電池の封
口部分の拡大断面図FIG. 4 is an enlarged sectional view of a sealing portion of an alkaline dry battery according to an embodiment of the present invention.
１ 電池ケース ２ 正極合剤 ３ 負極ゲル状物質 ４ セパレーター ５ 環状連結部 ６ 環状薄肉部 ７ 樹脂製ガスケット ８ 負極集電体 ８′ 負極集電体鍔部刃突起 ９ ガス逸散孔 １０ 負極端子底板 １１ ガス逸散孔 １２ 開口部 １３ 正極端子 １４ 外装ラベル DESCRIPTION OF SYMBOLS 1 Battery case 2 Positive electrode mixture 3 Negative gel-like substance 4 Separator 5 Annular connection part 6 Annular thin part 7 Resin gasket 8 Negative electrode current collector 8'Negative electrode current collector collar blade protrusion 9 Gas escape hole 10 Negative electrode terminal bottom plate 11 Gas Dissipation Hole 12 Opening 13 Positive Electrode Terminal 14 Exterior Label
Claims (1)
電池ケースの開口部を閉塞し、ガス圧力により膨脹する
環状薄肉部を有する樹脂製ガスケットと、ガスケット中
央部を貫通する集電体を有し、前記集電体の周縁に前記
ガスケットの環状薄肉部に対向する刃突起を設けたこと
を特徴とする筒型アルカリ電池。1. A battery case containing a power generating element, a resin gasket having an annular thin portion that closes an opening of the battery case and expands due to gas pressure, and a current collector that penetrates the gasket central portion. The cylindrical alkaline battery is characterized in that a blade protrusion facing the annular thin portion of the gasket is provided on the periphery of the current collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15590895A JPH097572A (en) | 1995-06-22 | 1995-06-22 | Cylindrical alkaline battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15590895A JPH097572A (en) | 1995-06-22 | 1995-06-22 | Cylindrical alkaline battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH097572A true JPH097572A (en) | 1997-01-10 |
Family
ID=15616149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15590895A Pending JPH097572A (en) | 1995-06-22 | 1995-06-22 | Cylindrical alkaline battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH097572A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0966052A1 (en) * | 1998-06-15 | 1999-12-22 | Sony Corporation | Gasket, method of molding same, and cylindrical alkaline manganese dioxide cell using same |
| US6294283B1 (en) | 1998-08-21 | 2001-09-25 | Eveready Battery Company, Inc. | Electrochemical cell having low profile seal assembly |
| US6300004B1 (en) | 1998-08-21 | 2001-10-09 | Eveready Battery Company, Inc. | Battery constructions having reduced collector assembly volume |
| JP2008226565A (en) * | 2007-03-10 | 2008-09-25 | Fdk Energy Co Ltd | Negative electrode collector for alkaline battery and alkaline battery |
| CN102489175A (en) * | 2011-12-20 | 2012-06-13 | 天津工业大学 | Preparation method of ceramic/molten salt double-phase composite gas separating film |
| US8247111B2 (en) | 2008-04-15 | 2012-08-21 | Panasonic Corporation | Alkaline battery and sealing unit for alkaline battery |
-
1995
- 1995-06-22 JP JP15590895A patent/JPH097572A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0966052A1 (en) * | 1998-06-15 | 1999-12-22 | Sony Corporation | Gasket, method of molding same, and cylindrical alkaline manganese dioxide cell using same |
| US6634649B1 (en) | 1998-06-15 | 2003-10-21 | Sony Corporation | Gasket, method of molding same, and cylindrical alkaline-manganese dioxide cell using same |
| US6294283B1 (en) | 1998-08-21 | 2001-09-25 | Eveready Battery Company, Inc. | Electrochemical cell having low profile seal assembly |
| US6300004B1 (en) | 1998-08-21 | 2001-10-09 | Eveready Battery Company, Inc. | Battery constructions having reduced collector assembly volume |
| JP2008226565A (en) * | 2007-03-10 | 2008-09-25 | Fdk Energy Co Ltd | Negative electrode collector for alkaline battery and alkaline battery |
| US8247111B2 (en) | 2008-04-15 | 2012-08-21 | Panasonic Corporation | Alkaline battery and sealing unit for alkaline battery |
| CN102489175A (en) * | 2011-12-20 | 2012-06-13 | 天津工业大学 | Preparation method of ceramic/molten salt double-phase composite gas separating film |
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