JPH06140010A - Small sealed battery - Google Patents
Small sealed batteryInfo
- Publication number
- JPH06140010A JPH06140010A JP4292393A JP29239392A JPH06140010A JP H06140010 A JPH06140010 A JP H06140010A JP 4292393 A JP4292393 A JP 4292393A JP 29239392 A JP29239392 A JP 29239392A JP H06140010 A JPH06140010 A JP H06140010A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust hole
- cap
- exhaust
- battery
- section
- 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
-
- 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
-
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金属製容器内に電池要
素を収納し、容器を閉塞する蓋板に排気機構を設けた小
型密閉電池に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small sealed battery in which a battery element is housed in a metal container and a cover plate for closing the container is provided with an exhaust mechanism.
【０００２】[0002]
【従来の技術】近年、電気機器の小型化、ポータブル化
に伴い、その主電源およびバックアップ用電源として、
数多くの種類の電池が多用されており、とくに小型密閉
電池が広く使用されている。2. Description of the Related Art In recent years, with the miniaturization and portability of electrical equipment, as a main power source and backup power source,
Many types of batteries are widely used, especially small sealed batteries are widely used.
【０００３】小型密閉電池のなかではキャップ状端子内
に弾性弁体を圧入した復元式排気機構を備えたものが知
られている。以下に従来の小型密閉電池について説明す
る。Among small sealed batteries, there is known one having a restoration type exhaust mechanism in which an elastic valve body is press-fitted into a cap-shaped terminal. The conventional small sealed battery will be described below.
【０００４】図６（ａ）は、従来の角型の小型密閉電池
の外観を示すものである。図６において、１は電池要素
を収納した角型の有底金属製ケース２の開口上縁部を密
封した金属製蓋板３に設けたキャップ状端子である。そ
して金属製蓋板３の周辺部は角型の有底金属ケース２の
開口上縁部にレーザービーム等で溶接されて有底金属ケ
ース２を密封している。この蓋板３の詳細を図６（ｂ）
に示す。キャップ状端子１は図６（ｃ）に示すように、
その側部をわずかに切り欠いて排気孔１ａが設けられて
おり、下端の拡大鍔部１ｂは中空リベット４の上縁部４
ａにスポット溶接されている。上記中空リベット４はそ
の上縁部４ａとキャップ状端子１とで形成される空間に
合成ゴム製の弾性弁体５を加圧状態で収納し、かつ中央
の貫通孔４ｂの一部をなす下端部４ｃを外側に拡大して
上縁部４ａとの間でかしめ止めして、合成樹脂製ガスケ
ット６を介して金属製蓋板３とワッシャ７を挟着してい
る。そしてワッシャ７の下端は下方に折り曲げられ、そ
の先端部分に電池要素の正極リードの先端をスポット溶
接している。FIG. 6 (a) shows the appearance of a conventional rectangular small sealed battery. In FIG. 6, reference numeral 1 denotes a cap-shaped terminal provided on a metal lid plate 3 that seals the upper edge of the opening of a rectangular bottomed metal case 2 that houses a battery element. The peripheral portion of the metal lid plate 3 is welded to the upper edge of the opening of the rectangular bottomed metal case 2 with a laser beam or the like to seal the bottomed metal case 2. Details of this cover plate 3 are shown in FIG.
Shown in. The cap-shaped terminal 1 is, as shown in FIG.
An exhaust hole 1a is provided by slightly cutting out the side portion thereof, and the enlarged flange portion 1b at the lower end is an upper edge portion 4 of the hollow rivet 4.
Spot welded to a. The hollow rivet 4 accommodates an elastic valve element 5 made of synthetic rubber under pressure in a space formed by the upper edge portion 4a and the cap-shaped terminal 1 and forms a lower end which is a part of the central through hole 4b. The portion 4c is enlarged to the outside and caulked to the upper edge portion 4a, and the metal lid plate 3 and the washer 7 are sandwiched via the synthetic resin gasket 6. The lower end of the washer 7 is bent downward, and the tip of the positive electrode lead of the battery element is spot-welded to the tip portion.
【０００５】以上図６に示す小型密閉電池は、正極活物
質としてニッケル酸化物またはマンガン酸化物、負極活
物質としてカドミウムや水素、亜鉛、鉄等を用いるアル
カリ蓄電池で構成されることが多い。このようなアルカ
リ蓄電池は充電器の故障による過大充電電流の流入や、
転極を伴うような過放電、また火中などへの投入に起因
した高熱により、電池内で多量のガスが発生する。この
多量のガスを電池外へ速やかに排出する排気機構が安全
性を確保する上で重要な位置をしめるものである。The small sealed battery shown in FIG. 6 is often an alkaline storage battery using nickel oxide or manganese oxide as the positive electrode active material and cadmium, hydrogen, zinc, iron or the like as the negative electrode active material. Such an alkaline storage battery causes excessive charging current due to charger failure,
A large amount of gas is generated in the battery due to over-discharging that involves polarity reversal and high heat caused by throwing into fire or the like. An exhaust mechanism that quickly discharges this large amount of gas to the outside of the battery is an important position for ensuring safety.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら上記従来
の構成では、キャップ状端子に設けられた排気孔が小さ
いために火中などの高熱下では合成ゴム製の弾性弁体が
急激に溶融して排気孔を塞いでしまい、電池内の高圧ガ
スが十分に排気できないという問題点を有していた。However, in the above-mentioned conventional configuration, since the exhaust hole provided in the cap-shaped terminal is small, the elastic valve body made of synthetic rubber is rapidly melted under high heat such as a fire and exhausted. There is a problem that the high pressure gas in the battery cannot be exhausted sufficiently because the hole is blocked.
【０００７】本発明は上記従来の問題点を解決するもの
で、火中などの高熱下においても電池内の高圧ガスを速
やかに排気させ、安全性を確保しうる小型密閉電池を提
供することを目的とする。The present invention solves the above-mentioned conventional problems, and provides a small sealed battery capable of promptly exhausting the high pressure gas in the battery even under high heat such as fire and ensuring safety. To aim.
【０００８】[0008]
【課題を解決するための手段】この目的を達成するため
に本発明は、キャップ状端子の有頭角柱状頭部の側面部
に２箇所以上排気孔を設け、この排気孔は側面底部での
幅ａ、高さｃで切り欠き状とし、その幅ａと頭部内空間
部の底辺ｂ、高さｈで決る縦断面Ｂの底辺ｂとの比（ａ
／ｂ）が５０％以上、断面Ｂの面積ＳＢと排気孔面積Ｓ
Ａの比（ＳＡ／ＳＢ）が１５％以上としたものである。In order to achieve this object, the present invention provides two or more exhaust holes on the side surface of the head having a prismatic head with a cap-shaped terminal, and the exhaust holes have a width at the bottom of the side surface. a, a height c, and a notch shape, and a ratio of the width a to the bottom b of the space in the head and the bottom b of the vertical section B determined by the height h (a
/ B) is 50% or more, the area SB of the cross section B and the exhaust hole area S
The ratio of A (SA / SB) is set to 15% or more.
【０００９】[0009]
【作用】この構成によって、誤まった投入による火中な
どの高熱下でも、急激に溶融した弾性弁体でキャップ状
端子側面の排気孔を塞ぐことなく、電池内の高圧ガスを
速やかに排気孔から排気することにより優れた排気能力
を得ることができる。With this structure, the high pressure gas in the battery can be quickly exhausted without blocking the exhaust hole on the side surface of the cap-shaped terminal with the elastic valve element that is rapidly melted, even under high heat such as a fire caused by incorrect injection. It is possible to obtain an excellent exhaust capacity by exhausting from.
【００１０】[0010]
【実施例】以下本発明の実施例について、図面を参照し
ながら説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１（ａ）は本発明の実施例における角型
の小型密閉電池の外観を示し、同（ｂ）はキャップ状端
子１の拡大上面部、同（ｃ）はキャップ状端子１の拡大
側面図を示す。図１（ｃ）において、１ａはキャップ状
端子１に設けた排気孔である。なおこの排気孔１ａは図
２に示すように拡大鍔部１ｂ側の側面部に設けてもよ
い。この排気孔１ａは、キャップ状端子１の有頭角柱状
頭部側面の底辺での切り幅ａを底辺とする高さｃの二等
辺三角形状であり前記キャップ状端子側面部に対面状態
で２箇所設けられている。FIG. 1 (a) shows the external appearance of a small rectangular sealed battery according to an embodiment of the present invention, FIG. 1 (b) is an enlarged upper surface portion of the cap-shaped terminal 1, and FIG. 1 (c) is the cap-shaped terminal 1. An enlarged side view is shown. In FIG. 1C, 1a is an exhaust hole provided in the cap-shaped terminal 1. The exhaust hole 1a may be provided in the side surface portion on the side of the enlarged flange portion 1b as shown in FIG. The exhaust holes 1a are in an isosceles triangle shape having a height c with the cutting width a at the bottom of the side surface of the cap-shaped terminal 1 having a prismatic head, and are located at two positions facing the side surface of the cap-shaped terminal. It is provided.
【００１２】図３において（ａ）は排気孔面積Ａを、
（ｂ）はキャップ状端子の頭部内空間部の縦断面Ｂをそ
れぞれ示す。またａは排気孔の切り幅、ｃはその高さ、
ｂは底辺、ｈは内高さである。ここで排気孔１ａは、排
気孔の切り幅ａと頭部内空間部の縦断面Ｂの底辺ｂとの
比（ａ／ｂ）が５０％以上、断面Ｂの面積ＳＢと排気孔
の面積ＳＡとの比（ＳＡ／ＳＢ）が１５％以上の大きさ
を有している。In FIG. 3, (a) shows the exhaust hole area A,
(B) shows the vertical cross section B of the space in the head of the cap-shaped terminal, respectively. Also, a is the width of the exhaust hole, c is its height,
b is the base and h is the inner height. Here, the exhaust hole 1a has a ratio (a / b) of the cut width a of the exhaust hole to the bottom side b of the vertical cross section B of the space in the head portion of 50% or more, the area SB of the cross section B and the area SA of the exhaust hole SA. The ratio (SA / SB) is 15% or more.
【００１３】図４（ａ）はこのキャップ状端子を備えた
蓋板３の要部断面図、（ｂ）は（ａ）の線Ａ−Ａに沿っ
た断面図である。図４に示した弾性弁体５は通常クロロ
プレンゴム、エチレン−プロピレン共重合ゴム等の汎用
性ゴムで形成されていて、その上面形状は四角形であ
り、その対向する一対の側縁にフランジ５ａが設けられ
ている。弾性弁体５はフランジ５ａがキャップ状端子１
の排気孔１ａが設けられた側面の前記排気孔１ａよりも
上部に接するようにキャップ状端子１の頭部内に圧縮状
体で収納されている。またキャップ状端子１の前記有頭
角柱状頭部および弾性弁体５の中心は中空リベット４の
貫通孔４ｂの中心の鉛直線上に位置するように構成され
ている。FIG. 4A is a sectional view of a main part of the cover plate 3 provided with the cap-shaped terminal, and FIG. 4B is a sectional view taken along the line AA of FIG. The elastic valve body 5 shown in FIG. 4 is generally made of general-purpose rubber such as chloroprene rubber and ethylene-propylene copolymer rubber, and its upper surface has a quadrangular shape, and the flanges 5a are formed on the pair of side edges facing each other. It is provided. The flange 5a of the elastic valve body 5 is the cap-shaped terminal 1
The cap-shaped terminal 1 is housed as a compressed body so as to come into contact with the upper side of the side surface provided with the exhaust hole 1a above the exhaust hole 1a. The center of the headed prismatic head of the cap-shaped terminal 1 and the center of the elastic valve body 5 are arranged on the vertical line of the center of the through hole 4b of the hollow rivet 4.
【００１４】なおその他の部品の構成は、図６に示した
従来例と同様である。以上のような構成の角型の小型密
閉電池においては、充電器の故障による過大充電電流の
流入や、転極を伴うような過放電などにより、電池内圧
が上昇した場合、高圧ガスが弾性弁体を下側から押し上
げ、キャップ状端子の排気孔１ａから外部へ排出され
る。また火中などの高熱下で弾性弁体が急激に溶融し
て、これが内部のガスとともに排気孔より流出するよう
な場合においても、排気孔が溶けた弾性弁体によって塞
がれるようなことはなく、ガスを十分に外部へ排出する
ことができる。The structure of the other parts is the same as that of the conventional example shown in FIG. In the rectangular small sealed battery configured as described above, when the internal pressure of the battery rises due to the inflow of an excessive charging current due to the failure of the charger or the over-discharging associated with the reversing of the charge, the high pressure gas causes the elastic valve to The body is pushed up from the lower side and is discharged to the outside from the exhaust hole 1a of the cap-shaped terminal. In addition, even if the elastic valve body melts rapidly under high heat such as in a fire and flows out through the exhaust hole together with the gas inside, the exhaust hole will not be blocked by the melted elastic valve body. Gas can be sufficiently discharged to the outside.
【００１５】なお、排気孔１ａの形状は三角形の他、図
５に示すような（ａ）半円形、（ｂ）台形、（ｃ）矩形
の形状でも同様の効果が得られる。In addition to the triangular shape of the exhaust hole 1a, the same effect can be obtained by (a) semicircular shape, (b) trapezoidal shape, and (c) rectangular shape as shown in FIG.
【００１６】（表１）に、幅が１７mm、高さが４８mm、
厚みが６mmで、内容積が３．５cm3、容量が５００ｍＡ
ｈの角型ニッケル水素蓄電池におけるキャップ状端子
（底辺ｂが３mm、内高さｈが１．５mm）と排気孔の切り
幅ａ、高さｃおよび面積ＳＡを示す。Ｗ，Ｘ，Ｙ，Ｚは
図１に示す実施例の排気孔１ａの幅ａと高さｃの異なる
キャップ状端子を備えた角型ニッケル水素蓄電池、従来
品は図６に示す従来のキャップ状端子を備えた角型ニッ
ケル水素蓄電池である。In Table 1, the width is 17 mm and the height is 48 mm.
The thickness is 6 mm, the internal volume is 3.5 cm 3 , and the capacity is 500 mA.
The cap-shaped terminal (bottom b is 3 mm, inner height h is 1.5 mm) and the cutout width a, height c, and area SA of the exhaust hole in the rectangular nickel-metal hydride storage battery of h are shown. W, X, Y, and Z are rectangular nickel-metal hydride storage batteries provided with cap-shaped terminals having different widths a and heights c of the exhaust holes 1a of the embodiment shown in FIG. 1, and the conventional product is the conventional cap-shaped battery shown in FIG. It is a square nickel-metal hydride storage battery equipped with terminals.
【００１７】[0017]
【表１】 [Table 1]
【００１８】上記Ｗ，Ｘ，Ｙ，Ｚおよび従来品の３０℃
と３００℃での排気量の関係を図７に示す。本実験では
各温度下で電池内部に人為的に２ＭPaの圧力を１０秒間
かけたときの外部への総排気量を測定した。The above W, X, Y, Z and conventional products at 30 ° C.
FIG. 7 shows the relationship between the exhaust gas amount and the exhaust amount at 300 ° C. In this experiment, the total amount of exhausted gas to the outside was measured when artificially applying a pressure of 2 MPa to the inside of the battery at each temperature for 10 seconds.
【００１９】図７より３００℃においては従来品とＷ，
Ｘは３０℃のときよりも排気が低下する。これは弾性弁
体が溶融しキャップ状端子の排気孔を塞いでしまうから
である。これに対しＹ，Ｚは３００℃でも排気量の低下
はない。これは弾性弁体が溶融して排気孔側へ流出して
も内部ガスを十分排気できる排気孔の大きさを有してい
るからである。From FIG. 7, at 300 ° C., W,
Exhaust of X is lower than that at 30 ° C. This is because the elastic valve body melts and blocks the exhaust hole of the cap-shaped terminal. On the other hand, in Y and Z, the exhaust amount does not decrease even at 300 ° C. This is because the elastic valve body has a size of the exhaust hole that can sufficiently exhaust the internal gas even if the elastic valve body melts and flows out to the exhaust hole side.
【００２０】また、一般に電池内容積が大きくなるほど
電池容量は大きくなり、また電池容量が大きいほど電池
内圧に対する発生ガス量は多くなる。したがって、排気
孔の大きさも電池内容積や電池容量の大きさにつれて大
きくする必要がある。図７より、排気孔面積は電池内容
積１cm3当たり０．２mm2以上、電池容量１００ｍＡｈ当
たり０．１５mm2以上となる。In general, the larger the battery internal volume, the larger the battery capacity, and the larger the battery capacity, the larger the amount of gas generated with respect to the battery internal pressure. Therefore, it is necessary to increase the size of the exhaust hole as the battery internal volume and battery capacity increase. From FIG. 7, the area of the exhaust hole is 0.2 mm 2 or more per 1 cm 3 of battery internal volume and 0.15 mm 2 or more per 100 mAh of battery capacity.
【００２１】[0021]
【発明の効果】以上のように本発明は、弾性弁体を内部
に収納する有頭角柱状頭部の両側に拡大鍔部を形成した
キャップ状端子の前記有頭角柱状頭部の側面部に排気孔
を設け、その底部での切り幅ａと頭部内空間部の縦断面
Ｂの底辺ｂとの比（ａ／ｂ）が５０％以上、縦断面Ｂの
面積ＳＢと排気孔面積ＳＡとの比（ＳＡ／ＳＢ）が１５
％以上とし、このような排気孔を２箇所以上設けること
により、火中などの高熱下であっても電池内の高圧ガス
を十分に排気しうる安全性に優れた小型密閉電池を実現
できるものである。As described above, according to the present invention, the cap-shaped terminal in which the enlarged brim portions are formed on both sides of the headed prismatic head for accommodating the elastic valve body is exhausted to the side surface of the headed prismatic head. A hole is provided, and the ratio (a / b) of the cut width a at the bottom to the bottom b of the vertical cross section B of the space in the head is 50% or more, and the area SB of the vertical cross section B and the exhaust hole area SA are Ratio (SA / SB) is 15
%, And by providing two or more such exhaust holes, it is possible to realize a small sealed battery with excellent safety that can sufficiently discharge the high pressure gas in the battery even under high heat such as fire. Is.
【図１】（ａ）本発明の実施例における角型の小型密閉
電池の外観斜視図 （ｂ）同キャップ状端子の上面図 （ｃ）同キャップ状端子の側面図FIG. 1A is an external perspective view of a prismatic small sealed battery according to an embodiment of the present invention. FIG. 1B is a top view of the cap-shaped terminal. FIG. 1C is a side view of the cap-shaped terminal.
【図２】（ａ）本発明の他の実施例におけるキャップ状
端子の上面図 （ｂ）同キャップ状端子の側面図FIG. 2A is a top view of a cap-shaped terminal according to another embodiment of the present invention, and FIG. 2B is a side view of the cap-shaped terminal.
【図３】（ａ）本発明の実施例におけるキャップ状端子
の排気孔面積を示す図 （ｂ）同キャップ状端子の頭部内空間部の縦断面面積を
示す図FIG. 3 (a) is a diagram showing an exhaust hole area of a cap-shaped terminal in an embodiment of the present invention.
【図４】（ａ）本発明の実施例における蓋板の要部断面
図 （ｂ）（ａ）の線Ａ−Ａに沿った断面図FIG. 4A is a sectional view of a main part of a lid plate according to an embodiment of the present invention. FIG. 4B is a sectional view taken along the line AA in FIG. 4A.
【図５】（ａ）本発明のキャップ状端子の排気孔形状の
変形例１を示す図 （ｂ）同排気孔形状の変形例２を示す図 （ｃ）同排気孔形状の変形例３を示す図5A is a diagram showing a modification 1 of the exhaust hole shape of the cap-like terminal of the present invention, FIG. 5B is a diagram showing a modification example 2 of the same exhaust hole shape, and FIG. 5C is a modification example 3 of the same exhaust hole shape. Figure
【図６】（ａ）従来の角型の小型密閉電池の外観斜視図 （ｂ）同蓋板要部の拡大断面図 （ｃ）同キャップ状端子の拡大側面図FIG. 6A is an external perspective view of a conventional small rectangular sealed battery, and FIG. 6B is an enlarged cross-sectional view of a main part of the lid plate, and FIG.
【図７】本発明品と従来品の各温度下における排気量の
変化を示す図FIG. 7 is a diagram showing changes in the exhaust amount under each temperature of the product of the present invention and the conventional product.
１ キャップ状端子 １ａ 排気孔 １ｂ 拡大鍔部 ２ ケース ３ 蓋板 ４ 中空リベット ４ａ 上縁部 ４ｂ 中央貫通孔 ４ｃ 下端部 ５ 弾性弁体 ５ａ フランジ ６ ガスケット ７ ワッシャ ａ 排気孔の切り幅 ｂ 底辺 ｃ 排気孔高さ ｈ 内高 1 Cap Terminal 1a Exhaust Hole 1b Enlarged Collar 2 Case 3 Cover Plate 4 Hollow Rivet 4a Upper Edge 4b Central Through Hole 4c Lower End 5 Elastic Valve 5a Flange 6 Gasket 7 Washer a Exhaust Cut Width b Bottom c Exhaust Hole height h Inner height
───────────────────────────────────────────────────── フロントページの続き (72)発明者 竹内 康弘 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yasuhiro Takeuchi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (3)
頭角柱状頭部と、前記頭部の両側に設けられ蓋板にかし
め止めした中空リベットの上縁部と溶接される拡大鍔部
とからなるキャップ状端子を備え、前記有頭角柱状頭部
および弾性弁体の中心が中空リベットの貫通孔中心の鉛
直線上に位置する構成において、前記有頭角柱状頭部の
側面の２箇所以上には排気孔を設け、この排気孔は前記
側面の底辺から幅ａ、高さｃで切り欠き状に設けられ、
その切り幅ａと頭部内空間部の底辺ｂと高さｈで決る縦
断面Ｂの底辺ｂとの比（ａ／ｂ）が５０％以上、断面Ｂ
の面積ＳＢと排気孔の面積ＳＡとの比（ＳＡ／ＳＢ）が
１５％以上である小型密閉電池。1. An enlarged brim that is welded to a headed prismatic head for accommodating an elastic valve body under pressure and an upper edge of a hollow rivet provided on both sides of the head and caulked to a cover plate. Two or more positions on the side surface of the headed prismatic head in a configuration in which the center of the headed prismatic head and the center of the elastic valve body are located on the vertical line of the center of the through hole of the hollow rivet. An exhaust hole is provided in the exhaust hole, and the exhaust hole is formed in a notch shape with a width a and a height c from the bottom side of the side surface,
The ratio (a / b) of the cutting width a, the bottom side b of the space in the head and the bottom side b of the vertical section B determined by the height h is 50% or more, and the section B
The small sealed battery in which the ratio (SA / SB) of the area SB of the above to the area SA of the exhaust hole is 15% or more.
り０．２mm2以上である請求項１記載の小型密閉電池。2. The small sealed battery according to claim 1, wherein the exhaust hole area SA is 0.2 mm 2 or more per 1 cm 3 of battery internal volume.
当たり０．１５mm2以上である請求項１記載の小型密閉
電池。3. The exhaust hole area SA has a battery capacity of 100 mAh.
The small sealed battery according to claim 1, wherein the size is 0.15 mm 2 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4292393A JP3008698B2 (en) | 1992-10-30 | 1992-10-30 | Small sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4292393A JP3008698B2 (en) | 1992-10-30 | 1992-10-30 | Small sealed battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06140010A true JPH06140010A (en) | 1994-05-20 |
| JP3008698B2 JP3008698B2 (en) | 2000-02-14 |
Family
ID=17781214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4292393A Expired - Lifetime JP3008698B2 (en) | 1992-10-30 | 1992-10-30 | Small sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3008698B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07183019A (en) * | 1993-12-22 | 1995-07-21 | Furukawa Battery Co Ltd:The | Square sealed battery |
| FR2749437A1 (en) * | 1996-05-31 | 1997-12-05 | Samsung Display Devices Co Ltd | BATTERY CAP |
| WO2011131140A1 (en) * | 2010-04-23 | 2011-10-27 | Byd Company Limited | Explosion-proof device and power battery and battery module comprising the same |
| WO2012111742A1 (en) * | 2011-02-16 | 2012-08-23 | 新神戸電機株式会社 | Secondary battery |
-
1992
- 1992-10-30 JP JP4292393A patent/JP3008698B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07183019A (en) * | 1993-12-22 | 1995-07-21 | Furukawa Battery Co Ltd:The | Square sealed battery |
| FR2749437A1 (en) * | 1996-05-31 | 1997-12-05 | Samsung Display Devices Co Ltd | BATTERY CAP |
| WO2011131140A1 (en) * | 2010-04-23 | 2011-10-27 | Byd Company Limited | Explosion-proof device and power battery and battery module comprising the same |
| WO2012111742A1 (en) * | 2011-02-16 | 2012-08-23 | 新神戸電機株式会社 | Secondary battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3008698B2 (en) | 2000-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100317439B1 (en) | Sealed rechargeable battery | |
| US7491464B2 (en) | Alkaline cell with flat housing | |
| US7094494B2 (en) | Alkaline cell with flat housing | |
| US7704632B2 (en) | Electrochemical cell having a vent assembly with a rupturable seal member | |
| JP2006269423A (en) | Lithium secondary battery | |
| JP4339951B2 (en) | Secondary battery cap assembly | |
| WO2006035980A1 (en) | Enclosed battery, enclosed battery-use lead, and assembled battery formed by a plurality of enclosed batteries | |
| US4822377A (en) | Method for sealing an electrochemical cell employing an improved reinforced cover assembly | |
| US7294429B2 (en) | Alkaline cell with flat housing | |
| JPH10134790A (en) | Cylindrical alkaline battery | |
| JPH06140010A (en) | Small sealed battery | |
| KR100865405B1 (en) | Secondary battery | |
| US3332802A (en) | Electric current producing cell | |
| US6248473B1 (en) | Composite cover for a battery | |
| US7351495B2 (en) | Method of adding electrolyte to a gap between the cathode and separator of an alkaline cell | |
| KR20060085444A (en) | Cylindrical battery | |
| JP2595201Y2 (en) | Spiral battery | |
| JPS59127366A (en) | Safety valve for battery | |
| JPH11111244A (en) | Sealed storage battery | |
| JP3209440B2 (en) | Alkaline storage battery | |
| JPH0322346A (en) | Organic electrolyte battery | |
| JP2000138046A (en) | Sealed battery | |
| JPH10289702A (en) | Square sealed battery | |
| JPH07183012A (en) | Square sealed battery | |
| JPH04322053A (en) | Small enclosed cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071203 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081203 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091203 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091203 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101203 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101203 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111203 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111203 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121203 Year of fee payment: 13 |
|
| EXPY | Cancellation because of completion of term |