JP2000195478A - Cylindrical alkali battery - Google Patents
Cylindrical alkali batteryInfo
- Publication number
- JP2000195478A JP2000195478A JP10367112A JP36711298A JP2000195478A JP 2000195478 A JP2000195478 A JP 2000195478A JP 10367112 A JP10367112 A JP 10367112A JP 36711298 A JP36711298 A JP 36711298A JP 2000195478 A JP2000195478 A JP 2000195478A
- Authority
- JP
- Japan
- Prior art keywords
- resin packing
- metal plate
- burst
- battery
- packing
- 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
-
- 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)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は大電流用途に適し、
かつ安全機能に優れた円筒形アルカリ電池に関する。The present invention is suitable for high current applications,
The present invention relates to a cylindrical alkaline battery having excellent safety functions.
【０００２】[0002]
【従来の技術】従来、円筒形アルカリ電池は、主にヘッ
ドホンステレオやラジカセ等に使用されていたが、近年
の携帯用機器の増加により、ポータブルＭＤプレーヤ
ー、携帯電話、ノート型パソコン等のより重負荷用途に
使用される機会が増してきた。このような背景から、内
部抵抗を低く抑えることにより大電流用途にも対応した
高容量化および重負荷特性に優れた電池が開発されてい
る。このような電池は誤使用により充電した場合にガス
発生するが、破裂防止機能を備えているため安全弁が作
動し、破裂に至ることはない。2. Description of the Related Art Conventionally, cylindrical alkaline batteries have been mainly used for headphone stereos and boomboxes, but due to the recent increase in portable devices, more and more portable MD players, mobile phones, notebook computers and the like have been used. Opportunities for use in load applications have increased. From such a background, a battery having a high capacity and an excellent heavy load characteristic corresponding to a large current application by suppressing the internal resistance to be low has been developed. Such a battery generates gas when charged due to misuse. However, since the battery is provided with a rupture prevention function, the safety valve operates to prevent rupture.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、重負荷
特性に優れた電池は内部抵抗が低く抑えられており、大
電流が流れるため、短絡した場合には１００℃程度まで
発熱する場合がある。また、誤使用による充電でも、大
電流充電の場合には短絡時と同様に発熱する。このた
め、発熱により軟化した樹脂製パッキンがガス発生によ
る内圧上昇に伴って変形し、安全弁作動時に金属板に押
し当てられてガス抜き孔の経路が塞がれ、その結果内圧
が上昇し続け、最終的に破裂に至る可能性があることが
判明した。本発明は、上記状況に鑑みてなされたもの
で、その目的は大電流用途に適し、かつ安全性の高い円
筒形アルカリ電池を提供することにある。However, a battery excellent in heavy load characteristics has a low internal resistance and a large current flows, so that a short circuit may generate heat up to about 100 ° C. In addition, even when charging due to misuse, in the case of high-current charging, heat is generated as in the case of a short circuit. For this reason, the resin packing softened by the heat is deformed with an increase in internal pressure due to gas generation, and is pressed against a metal plate when the safety valve is activated, blocking the path of the gas vent hole, and as a result, the internal pressure continues to increase, It turned out that it could eventually burst. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a highly safe cylindrical alkaline battery suitable for a large current application.
【０００４】[0004]
【課題を解決するための手段】本発明は上記課題を解決
するために、樹脂製パッキングの金属板に面する側に凹
凸面を設けて、上記したような情況により樹脂製パッキ
ンが軟化変形して金属板のガス抜き孔に押し当てられた
場合にも、ガス抜きの経路を確保できるようにしたもの
である。すなわち本発明は、破裂防止機能としての薄膜
部を有する樹脂製パッキングとガス抜き孔を有する金属
板とを備えた封口構造の円筒形アルカリ電池において、
樹脂製パッキングの金属板に面する側に凹凸面を設けた
ことを特徴とするものである。According to the present invention, in order to solve the above-mentioned problems, an uneven surface is provided on a side of a resin packing facing a metal plate, so that the resin packing is softened and deformed in the above-described situation. Thus, even when pressed against a gas vent hole of a metal plate, a gas vent path can be secured. That is, the present invention is a cylindrical alkaline battery having a sealing structure including a resin packing having a thin film portion as a rupture prevention function and a metal plate having a gas vent hole,
An uneven surface is provided on the side of the resin packing facing the metal plate.
【０００５】[0005]
【発明の実施の形態】以下、本発明の実施例および比較
例について説明する。図１の（ａ）は本発明の実施例で
ある円筒形アルカリ電池の封口部分の縦断面図であり、
（ｂ）は図１（ａ）のＡ−Ａ線より下部をみた平面図で
その半分のみを示したものである。図中、１は金属缶、
２は負極集電棒、３は樹脂製パッキング、３ａはパッキ
ング薄膜部、３ｂはパッキング凹凸面、４は金属板、４
ａはガス抜き孔、５は金属封口板、５ａは金属封口板に
設けたガス抜き孔である。これらの図に示されるよう
に、樹脂製パッキング３はボス部の外周に薄膜部３ａを
有し、薄膜部３ａから外側に向かって金属板４に面する
位置に凹凸面３ｂが設けられている。図１（ｂ）に示さ
れるように、この例では凹凸面３ｂの凹凸は放射状に形
成され、斜線の部分が凹部それ以外が凸部である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention and comparative examples will be described. FIG. 1A is a longitudinal sectional view of a sealed portion of a cylindrical alkaline battery according to an embodiment of the present invention,
FIG. 1B is a plan view of the lower part of FIG. 1A taken along the line AA, and shows only a half thereof. In the figure, 1 is a metal can,
Reference numeral 2 denotes a negative electrode current collector rod, 3 denotes a resin packing, 3a denotes a packing thin film portion, 3b denotes an uneven packing surface, 4 denotes a metal plate,
a is a gas vent hole, 5 is a metal sealing plate, and 5a is a gas vent hole provided in the metal sealing plate. As shown in these drawings, the resin packing 3 has a thin film portion 3a on the outer periphery of the boss portion, and an uneven surface 3b is provided at a position facing the metal plate 4 outward from the thin film portion 3a. . As shown in FIG. 1B, in this example, the unevenness of the uneven surface 3b is formed radially, and the hatched portions are concave portions, and the other portions are convex portions.
【０００６】誤使用による大電流充電を行った場合に
は、発熱によるパッキング樹脂の軟化とガス発生による
内圧の上昇により、図２に示すように樹脂製パッキング
３が変形する。更に充電を続けると安全弁が作動し、図
３に示すように凹凸面３ｂが金属板に押し当てられる状
態になる。通常はこの状態になると金属板４のガス抜き
孔４ａが塞がれて前記したような危険な状態になるが、
本発明ではこのような状態になっても、樹脂製パッキン
グの金属板側の面が平滑でないためガス抜き経路が確保
され、破裂に至ることはない。なお、図１に示した構造
は一例であり、本発明を制限するものではない。When a large current is charged due to misuse, the resin packing 3 is deformed as shown in FIG. 2 due to softening of the packing resin due to heat generation and an increase in internal pressure due to gas generation. When charging is further continued, the safety valve operates, and the uneven surface 3b is pressed against the metal plate as shown in FIG. Normally, when this state is reached, the gas vent hole 4a of the metal plate 4 is closed and the above-mentioned dangerous state occurs,
In the present invention, even in such a state, since the surface of the resin packing on the metal plate side is not smooth, a gas vent path is secured, and no rupture occurs. Note that the structure shown in FIG. 1 is an example and does not limit the present invention.
【０００７】比較のため、図４に従来の樹脂製パッキン
グを使用した封口部断面図を示す。図４（ａ）は縦断面
図、図４（ｂ）は図４（ａ）のＡ−Ａ線より下部をみた
平面図でその半分のみを示したものである。この樹脂製
パッキングでは、金属板に面する側は平面となっている
ので、この部分が金属板に押し当てられると、ガス抜き
経路が塞がれることとなり、このような状態で誤使用に
よる充電でガスが発生し続ければ、破裂に至る可能性が
ある。For comparison, FIG. 4 shows a sectional view of a sealing portion using a conventional resin packing. FIG. 4A is a longitudinal sectional view, and FIG. 4B is a plan view of the lower part taken along the line AA of FIG. 4A, and shows only a half thereof. In this resin packing, the side facing the metal plate is flat, so if this part is pressed against the metal plate, the gas vent path will be blocked, and charging in this state due to misuse If gas continues to evolve, there is a possibility of rupture.
【０００８】[0008]
【発明の効果】以上説明したように、本発明の円筒形ア
ルカリ電池では、樹脂製パッキングに改良を加えたこと
により、誤使用による大電流充電の場合にも破裂するこ
とがない。したがって本発明によれば、大電流に適し、
かつ安全性の高い円筒形アルカリ電池を提供することが
できる。As described above, the cylindrical alkaline battery of the present invention does not burst even in the case of large current charging due to misuse, due to the improvement in the resin packing. Therefore, according to the present invention, suitable for large current,
A highly safe cylindrical alkaline battery can be provided.
【図１】本発明の一実施例である円筒形アルカリ電池の
封口部を示す図で、（ａ）は縦断面図、（ｂ）は平面
図。FIGS. 1A and 1B are views showing a sealing portion of a cylindrical alkaline battery according to an embodiment of the present invention, wherein FIG. 1A is a longitudinal sectional view and FIG.
【図２】図１の電池の樹脂製パッキング３が誤使用によ
る大電流充電により変形した状態を示す図。FIG. 2 is a diagram showing a state in which the resin packing 3 of the battery of FIG. 1 has been deformed by large current charging due to misuse.
【図３】図２の状態がさらに進行して樹脂製パッキング
の凹凸面３ｂが金属板に押し当てられた状態を示す図。FIG. 3 is a diagram showing a state in which the state of FIG. 2 further advances and the uneven surface 3b of the resin packing is pressed against a metal plate.
【図４】従来の円筒形アルカリ電池の封口部を示す図
で、（ａ）は縦断面図、（ｂ）は平面図。4A and 4B are views showing a sealing portion of a conventional cylindrical alkaline battery, wherein FIG. 4A is a longitudinal sectional view and FIG. 4B is a plan view.
１…金属缶、２…負極集電棒、３…樹脂製パッキング、
３ａ…樹脂製パッキングの薄膜部、３ｂ…樹脂製パッキ
ングの凹凸面、４…金属板、４ａ…ガス抜き孔、５…金
属封口板、５ａ…金属封口板のガス抜き孔。1. Metal can, 2. Negative electrode current collector, 3. Resin packing,
3a: thin film portion of resin packing; 3b: uneven surface of resin packing; 4: metal plate; 4a: gas vent hole; 5: metal sealing plate; 5a: gas vent hole of metal sealing plate.
Claims (1)
脂製パッキングとガス抜き孔を有する金属板とを備えた
封口構造の円筒形アルカリ電池において、樹脂製パッキ
ングの金属板に面する側に凹凸面を設けたことを特徴と
する円筒形アルカリ電池。1. A cylindrical alkaline battery having a sealing structure including a resin packing having a thin film portion as a rupture prevention function and a metal plate having a gas vent hole, the resin packing has an uneven surface on the side facing the metal plate. A cylindrical alkaline battery having a surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10367112A JP2000195478A (en) | 1998-12-24 | 1998-12-24 | Cylindrical alkali battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10367112A JP2000195478A (en) | 1998-12-24 | 1998-12-24 | Cylindrical alkali battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000195478A true JP2000195478A (en) | 2000-07-14 |
Family
ID=18488490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10367112A Pending JP2000195478A (en) | 1998-12-24 | 1998-12-24 | Cylindrical alkali battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000195478A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002075315A (en) * | 2000-09-04 | 2002-03-15 | Hitachi Maxell Ltd | Alkaline dry battery |
| JP2005518651A (en) * | 2002-02-20 | 2005-06-23 | エヴァレディー バッテリー カンパニー インコーポレイテッド | Seal for electrochemical battery |
-
1998
- 1998-12-24 JP JP10367112A patent/JP2000195478A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002075315A (en) * | 2000-09-04 | 2002-03-15 | Hitachi Maxell Ltd | Alkaline dry battery |
| JP2005518651A (en) * | 2002-02-20 | 2005-06-23 | エヴァレディー バッテリー カンパニー インコーポレイテッド | Seal for electrochemical battery |
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