JP3008698B2 - Small sealed battery - Google Patents
Small sealed batteryInfo
- Publication number
- JP3008698B2 JP3008698B2 JP4292393A JP29239392A JP3008698B2 JP 3008698 B2 JP3008698 B2 JP 3008698B2 JP 4292393 A JP4292393 A JP 4292393A JP 29239392 A JP29239392 A JP 29239392A JP 3008698 B2 JP3008698 B2 JP 3008698B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust hole
- battery
- cap
- head
- area
- 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.)
- Expired - Lifetime
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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
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 an exhaust mechanism is provided on a cover plate for closing the container.
【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, as electric equipment has become smaller and more portable, its main power supply and backup power supply have been
Many types of batteries are frequently used, and small sealed batteries are particularly 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。[0003] Among the small sealed batteries, there is known a one provided with a restorable exhaust mechanism in which an elastic valve body is press-fitted in a cap-shaped terminal. Hereinafter, a conventional small sealed battery will be described.
【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. 6A shows the appearance of a conventional small rectangular sealed battery. In FIG. 6, reference numeral 1 denotes a cap-shaped terminal provided on a metal lid plate 3 which seals an upper edge of an opening of a square bottomed metal case 2 containing a battery element. The peripheral portion of the metal cover plate 3 is welded to the upper edge of the opening of the square bottomed metal case 2 with a laser beam or the like to seal the bottomed metal case 2. The details of the lid plate 3 are shown in FIG.
Shown in As shown in FIG. 6C, the cap-shaped terminal 1
An exhaust hole 1a is provided by slightly notching the side portion, and the enlarged flange portion 1b at the lower end is provided with an upper edge portion 4 of the hollow rivet 4.
a is spot welded. The hollow rivet 4 houses a synthetic rubber elastic valve element 5 in a pressurized state in a space defined by an upper edge portion 4a and a cap-shaped terminal 1, and a lower end forming a part of a central through hole 4b. The portion 4c is expanded outward to be caulked with the upper edge portion 4a, and the metal cover 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 front end of the positive electrode lead of the battery element is spot-welded to the front end.
【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 constituted by an alkaline storage battery using nickel oxide or manganese oxide as a positive electrode active material and cadmium, hydrogen, zinc, iron or the like as a negative electrode active material. Such an alkaline storage battery has an inflow of excessive charging current due to a failure of a charger,
A large amount of gas is generated in the battery due to overdischarge accompanied by pole reversal and high heat caused by being thrown into a fire or the like. The exhaust mechanism for quickly discharging a large amount of gas out 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 structure, the synthetic rubber elastic valve element rapidly melts and exhausts under high heat such as fire because the exhaust hole provided in the cap-shaped terminal is small. There is a problem that the holes are closed, and the high-pressure gas in the battery cannot be sufficiently exhausted.
【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。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a small sealed battery capable of ensuring high safety by quickly discharging high-pressure gas in the battery even under high heat such as fire. 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 at the side of the headed prismatic head of the cap-like terminal, and the exhaust holes have a width at the bottom of the side. a, notch at height c, and the ratio (a) of the width a to the bottom b of the longitudinal section B determined by the height h and the bottom b of the space in the head.
/ B) is 50% or more, and the area SB of the cross section B and the area S of the exhaust hole are
The ratio of A (SA / SB) is 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, even under a high temperature such as a fire due to an erroneous injection, the high-pressure gas in the battery is quickly exhausted without closing the exhaust hole on the side surface of the cap-like terminal with the rapidly melted elastic valve body. By exhausting air from above, an excellent exhaust capability can be obtained.
【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. 1A shows the appearance of a small rectangular sealed battery according to an embodiment of the present invention. FIG. 1B is an enlarged top view of the cap-like terminal 1, and FIG. Figure 4 shows an enlarged side view. In FIG. 1C, reference numeral 1a denotes an exhaust hole provided in the cap-shaped terminal 1. The exhaust hole 1a may be provided on the side surface on the side of the enlarged flange 1b as shown in FIG. The exhaust hole 1a is an isosceles triangle having a height c with a cut width a at the bottom of the side surface of the head of the cap-shaped terminal 1 at the base of the head, and two places facing the side surface of the cap-shaped terminal. 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 longitudinal section B of the space inside the head of the cap-shaped terminal. A is the cut width of the exhaust hole, c is its height,
b is the base and h is the inside height. Here, the ratio (a / b) of the cut width a of the exhaust hole to the bottom b of the longitudinal section B of the space in the head is 50% or more, and the area SB of the cross section B and the area SA of the exhaust hole (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-like terminal, and FIG. 4B is a sectional view taken along line AA of FIG. The elastic valve element 5 shown in FIG. 4 is usually formed of general-purpose rubber such as chloroprene rubber, ethylene-propylene copolymer rubber, and the like, and its upper surface is rectangular, and a pair of opposed side edges is provided with a flange 5a. Is provided. The elastic valve element 5 has a flange 5a whose cap-shaped terminal 1
The cap-shaped terminal 1 is housed in a compressed state so as to be in contact with the side of the side where the exhaust hole 1a is provided 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 element 5 are located 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 construction of other components is the same as that of the conventional example shown in FIG. In the rectangular small sealed battery having the above configuration, when the internal pressure of the battery rises due to the inflow of excessive charging current due to a failure of the charger or the overdischarge accompanied by the reversal of the polarity, the high-pressure gas is supplied to the elastic valve. The body is pushed up from below, and is discharged to the outside through the exhaust hole 1a of the cap-shaped terminal. In addition, even when the elastic valve body rapidly melts under high heat such as in a fire and flows out of the exhaust hole together with the internal gas, the exhaust hole may not be blocked by the melted elastic valve body. Gas can be exhausted 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。The same effect can be obtained if the shape of the exhaust hole 1a is not only triangular but also semi-circular, (b) trapezoidal, and (c) rectangular 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。Table 1 shows that the width is 17 mm, the height is 48 mm,
6mm thick, 3.5cm 3 internal volume, 500mA capacity
h shows a cap-shaped terminal (bottom side b is 3 mm, inner height h is 1.5 mm) and a cut width a, a height c and an area SA of an exhaust hole in the square nickel-metal hydride storage battery of h. W, X, Y, and Z are square nickel-metal hydride storage batteries having 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 a conventional cap-shaped battery shown in FIG. This is a prismatic nickel-metal hydride storage battery provided 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 the conventional 30 ° C.
FIG. 7 shows the relationship between the displacement and the displacement at 300 ° C. In this experiment, the total amount of exhaust to the outside when the pressure of 2 MPa was artificially applied to the inside of the battery at each temperature for 10 seconds was measured.
【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。FIG. 7 shows that at 300.degree.
For X, the exhaust is lower than 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, the displacement of Y and Z does not decrease even at 300 ° C. This is because the elastic valve element has a size of the exhaust hole that can sufficiently exhaust the internal gas even if the elastic valve element melts and flows 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１ｃｍ2以上、電池容量１００ｍＡｈ当たり０．１４
ｍｍ2以上となる。In general, the battery capacity increases as the battery internal volume increases, and the amount of gas generated with respect to the battery internal pressure increases as the battery capacity increases. Therefore, it is necessary to increase the size of the exhaust hole in accordance with the size of the battery and the capacity of the battery. As shown in FIG. 7, the exhaust hole area was 0.14 cm 2 or more in the battery capacity and 0.14 per 100 mAh of the battery capacity.
mm 2 or more.
【００２１】[0021]
【発明の効果】以上のように本発明の小型密閉型電池
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、かつ前記排気孔面積
ＳＡが電池内容積１ｃｍ 3 当たり０．２ｍｍ 2 以上であ
り、前記排気孔面積ＳＡが電池容量１００ｍＡｈ当たり
０．１４ｍｍ 2 となるような排気孔を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。The present invention has been described above.Small sealed battery
On both sides of the headed prismatic head that houses the elastic valve
The headed prismatic head of the cap-shaped terminal having an enlarged collar portion
An exhaust hole is provided on the side of the part, and the cut width a at the bottom and the head
The ratio (a / b) of the vertical section B of the internal space to the base b of the vertical section B is 50.
% Or more, the ratio between the area SB of the longitudinal section B and the area SA of the exhaust hole.
(SA / SB) is 15% or more,And the exhaust hole area
SA is 1cm inside battery volume Three 0.2mm per Two Is over
And the exhaust hole area SA is equal to the battery capacity per 100 mAh.
0.14mm Two BecomesProvide two or more such exhaust holes
This allows the battery to operate at high pressure even under high heat, such as in fire.
A small sealed battery with excellent safety that can exhaust gas sufficiently
It can be realized.
【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 small rectangular 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. 3A is a diagram showing the area of an exhaust hole of a cap-shaped terminal in an embodiment of the present invention. FIG. 3B is a diagram showing the vertical cross-sectional area of a space in the head of the cap-shaped terminal.
【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 cover plate according to an embodiment of the present invention. FIG. 4B is a sectional view taken along line AA in FIG.
【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 first modification of the shape of the exhaust hole of the cap-shaped terminal of the present invention. FIG. 5B is a diagram showing a second modification of the shape of the exhaust hole. Diagram shown
【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 rectangular sealed battery. FIG. 6B is an enlarged cross-sectional view of a main part of the lid plate.
【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 displacement of the present invention product and the conventional product at different temperatures.
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 DESCRIPTION OF SYMBOLS 1 Cap-shaped terminal 1a Exhaust hole 1b Enlarged flange 2 Case 3 Cover plate 4 Hollow rivet 4a Upper edge 4b Center through hole 4c Lower end 5 Elastic valve element 5a Flange 6 Gasket 7 Washer a Exhaust hole 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 (56)参考文献 特開 昭64−38965（ＪＰ，Ａ) 特開 昭59−127366（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 2/12,2/30 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yasuhiro Takeuchi 1006 Kazuma Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-64-38965 (JP, A) JP-A-59- 127366 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) H01M 2 / 12,2 / 30
Claims (1)
頭角柱状頭部と、前記頭部の両側に設けられた蓋板にか
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％以上であり、かつ前記排気孔面積ＳＡが電池内容
積１ｃｍ 3 当たり０．２ｍｍ 2 以上であり、前記排気孔
面積ＳＡが電池容量１００ｍＡｈ当たり０．１４ｍｍ 2
以上である小型密閉電池。And 1. A chromatic prominence columnar head for accommodating the elastic valve body inside under pressure, expansion is welded to the upper edge of the caulking the hollow rivet in the lid plate provided on both sides of the head A cap-shaped terminal comprising a flange portion, wherein the center of the headed prismatic head and the elastic valve element are located on a vertical line of the center of the through hole of the hollow rivet; more discharge pores provided, the exhaust hole width a from the bottom of the side, provided in a notched shape in the height c,
The ratio (a / b) of the base b of the longitudinal section B determined by the cutting width a, the base b of the space in the head and the height h is 50% or more, and the cross section B
The ratio of the area SB and the area SA of the exhaust hole (SA / SB) is Ri der 15% or more, and the exhaust hole area SA battery contents
0.2 mm 2 or more per 1 cm 3 of product
Area SA is 0.14 mm 2 per 100 mAh of battery capacity
The above is a small sealed battery.
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 JPH06140010A (en) | 1994-05-20 |
| JP3008698B2 true 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) |
Families Citing this family (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 |
| KR0176430B1 (en) * | 1996-05-31 | 1999-05-15 | 손욱 | Cap assembly of battery cell |
| CN202042536U (en) * | 2010-04-23 | 2011-11-16 | 比亚迪股份有限公司 | Explosion-proof battery structure and power battery adopting 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
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06140010A (en) | 1994-05-20 |
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