JPH0138857Y2 - - Google Patents
Info
- Publication number
- JPH0138857Y2 JPH0138857Y2 JP1981107903U JP10790381U JPH0138857Y2 JP H0138857 Y2 JPH0138857 Y2 JP H0138857Y2 JP 1981107903 U JP1981107903 U JP 1981107903U JP 10790381 U JP10790381 U JP 10790381U JP H0138857 Y2 JPH0138857 Y2 JP H0138857Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- plate
- valve hole
- tab
- cut
- 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
Links
- 238000003466 welding Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Classifications
-
- Y02E60/12—
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Description
【考案の詳細な説明】
本考案は密閉型蓄電池、特にその安全弁の構造
に関するものである。[Detailed Description of the Invention] The present invention relates to a sealed storage battery, and particularly to the structure of its safety valve.
密閉型ニツケル−カドミウム電池の如き密閉型
蓄電池においては、過充放電時に酸素ガスあるい
は水素ガスが発生して電池内部に充満し、時とし
て、その内部ガス圧が異常に高くなる場合があ
る。その際、電池ケースが破裂したり陽極端子部
が飛散する等の事故を招く危険性があるため、適
度の圧力で作動し、過剰のガスを放出する安全弁
が一般に取付けられている。 In a sealed storage battery such as a sealed nickel-cadmium battery, oxygen gas or hydrogen gas is generated and filled inside the battery during overcharging and discharging, and the internal gas pressure may sometimes become abnormally high. At that time, there is a risk of accidents such as the battery case bursting or the anode terminal being scattered, so a safety valve that operates at a moderate pressure and releases excess gas is generally installed.
従来のこの種安全弁としては、種々提案されて
いるが、その一例を、第１図ないし第３図を参照
して説明すると、安全弁は凹所２に弁孔３を設け
た蓋板１と、この蓋板１の立上り折曲縁１１をか
しめて一体に装着された皿状端子板４とよりな
り、内部に弁室５が形成されている。６は皿状端
子板４の側面に設けたガス抜小孔、７は弁室５に
設けたスプリング、８は合成ゴム等よりなる弁体
で、前記スプリング７により押圧板９を介して圧
接され、常時前記弁孔３を閉塞している。 Various conventional safety valves of this type have been proposed, and one example will be described with reference to FIGS. 1 to 3. The safety valve includes a cover plate 1 having a valve hole 3 in a recess 2; It consists of a dish-shaped terminal plate 4 which is integrally attached by caulking the rising bent edge 11 of this cover plate 1, and a valve chamber 5 is formed inside. 6 is a small gas vent hole provided on the side of the dish-shaped terminal plate 4; 7 is a spring provided in the valve chamber 5; and 8 is a valve body made of synthetic rubber or the like, which is pressed by the spring 7 through a pressing plate 9. , the valve hole 3 is always closed.
しかしながら、上述したような安全弁にあつて
は、極板から導出せる導電性タブ１０を蓋板１に
接続するに際して、種々の問題があつた。すなわ
ち、タブ１０と蓋板１とは、通常スポツト溶接を
行なつて接続するのであるが、スポツト溶接をす
る際に発生する熱により、弁体８が焼ける危険性
があつた。弁体８が焼けると、弁体８表面の平滑
性がそこなわれ、弁孔３の閉塞性が低下するた
め、弁作動圧のばらつきや漏液現象を引き起こす
原因となる。 However, in the safety valve as described above, there were various problems when connecting the conductive tab 10 that can be led out from the electrode plate to the cover plate 1. That is, although the tab 10 and the cover plate 1 are normally connected by spot welding, there is a risk that the valve body 8 may be burnt due to the heat generated during spot welding. If the valve body 8 is burnt, the smoothness of the surface of the valve body 8 will be impaired, and the sealing performance of the valve hole 3 will be reduced, which will cause variations in valve operating pressure and liquid leakage.
また、従来の安全弁では、蓋板１に固着された
タブ１０を折曲した際に、タブ１０の一部が蓋板
１に穿設された弁孔３をふさぐ懸念があつた。蓋
板１に設けてある弁孔３の大きさは、内部ガス圧
の上昇に対して一定以上の圧力になると安全弁が
作動する様、漏液防止なども考慮して所定の大き
さに決められている。したがつて、タブ１０の一
部が、弁孔３の一部をふさいでしまうと、安全弁
の機能が著しく低下して、電池ケースの破裂ある
いは陽極端子部が飛散するおそれがあつた。 Further, in the conventional safety valve, when the tab 10 fixed to the cover plate 1 is bent, there is a concern that a portion of the tab 10 may block the valve hole 3 formed in the cover plate 1. The size of the valve hole 3 provided in the cover plate 1 is determined to be a predetermined size in consideration of leakage prevention, etc. so that the safety valve is activated when the internal gas pressure rises and the pressure exceeds a certain level. ing. Therefore, if a portion of the tab 10 blocks a portion of the valve hole 3, the function of the safety valve will be significantly reduced, and there is a risk that the battery case will explode or the anode terminal portion will scatter.
本考案は上述した欠点を解消すべくなされたも
ので、以下本考案の一実施例を図面を参照しつつ
説明する。なお、従来例と同一部分には同一図番
を付し、説明を省略する。 The present invention has been made to eliminate the above-mentioned drawbacks, and one embodiment of the present invention will be described below with reference to the drawings. Note that the same parts as those in the conventional example are given the same drawing numbers, and explanations thereof will be omitted.
第４図ないし第６図に示すように、弁孔３が穿
設された蓋板１と、端子板４とからなる安全弁の
前記蓋板１の底面には、極板から導出せるタブ１
０を接続するための突起が弁孔３の端部から突出
した略Ｌ字状の切起し片１２ａで形成されてい
る。すなわち、蓋板１に弁孔３を穿設する際に、
弁孔３の外周形状の全てを切り抜くのではなく、
一部を切り残して、その切り残した一端部を中心
として、切り抜き部を折曲して、略Ｌ字状の切起
し片１２ａを形成したものである。そして、前記
切起し片１２ａにタブ１０をスポツト溶接して接
続する。 As shown in FIGS. 4 to 6, the bottom surface of the lid plate 1 of the safety valve consists of a lid plate 1 with a valve hole 3 formed therein and a terminal plate 4, and a tab 1 that can be drawn out from the electrode plate.
The protrusion for connecting the valve hole 3 is formed by a substantially L-shaped cut and raised piece 12a protruding from the end of the valve hole 3. That is, when drilling the valve hole 3 in the lid plate 1,
Rather than cutting out the entire outer circumference of the valve hole 3,
A substantially L-shaped cut and raised piece 12a is formed by leaving a portion uncut and bending the cutout portion around one end that was left uncut. Then, the tab 10 is connected to the cut and raised piece 12a by spot welding.
以上説明したように、本考案によれば、蓋板の
底面に極板から導出せるタブを接続するための切
起し片を形成したので、スポツト溶接する際スポ
ツト点を弁体から離すことができ、スポツト溶接
時の熱により弁体が焼けることもなくなり、弁体
の焼けによる不都合を解消することができるとと
もに、蓋板とタブとを接続した後タブを折曲した
際にも、タブが弁孔の一部分をふさぎ安全弁の機
能を低下させるというおそれもなく、常に良好な
密閉型蓄電池を提供することができ実用的効果は
大きい。 As explained above, according to the present invention, a cut and raised piece is formed on the bottom surface of the lid plate for connecting the tab that can be drawn out from the electrode plate, so it is possible to separate the spot point from the valve body when spot welding. This eliminates the risk of burning the valve body due to the heat during spot welding, eliminating the inconvenience caused by burning the valve body, and also preventing the tab from being bent when the tab is bent after connecting the cover plate and tab. There is no fear that the function of the safety valve will be degraded by blocking a portion of the valve hole, and a good sealed storage battery can always be provided, which has a great practical effect.
第１図ないし第３図は従来例を、第４図ないし
第６図は本考案の一実施例を示すもので、第１図
および第４図は縦断面図、第２図および第５図は
底面面、第３図および第６図は各々の斜視図であ
る。
１……蓋板、３……弁孔、４……端子板、８…
…弁体、１２ａ……切起し片。
Figures 1 to 3 show a conventional example, and Figures 4 to 6 show an embodiment of the present invention. Figures 1 and 4 are longitudinal sectional views, and Figures 2 and 5. is a bottom view, and FIGS. 3 and 6 are respective perspective views. 1... Lid plate, 3... Valve hole, 4... Terminal board, 8...
...Valve body, 12a... cut and raised piece.
Claims (1)
と、 該弁室内に介在され前記弁孔を常時閉塞する弁
体とからなる安全弁を備えた密閉型蓄電池であつ
て、 前記蓋板の底面に前記弁孔の端部から電池内方
向へ突出する切起し片を設け、該切起し片に極板
から導出せる導電性タブを接続したことを特徴と
する密閉型蓄電池。[Claims for Utility Model Registration] A lid plate with a valve hole bored in its bottom surface, a terminal plate, a valve chamber formed by the lid plate and the terminal plate, and a valve chamber interposed within the valve chamber and having the valve hole formed therein. A sealed storage battery equipped with a safety valve consisting of a valve body that is always closed, wherein a cut-and-raised piece is provided on the bottom surface of the lid plate and projects from an end of the valve hole toward the inside of the battery, and the cut-and-raised piece A sealed storage battery characterized by connecting a conductive tab that can be drawn out from the electrode plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981107903U JPS5813665U (en) | 1981-07-20 | 1981-07-20 | sealed storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981107903U JPS5813665U (en) | 1981-07-20 | 1981-07-20 | sealed storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5813665U JPS5813665U (en) | 1983-01-28 |
| JPH0138857Y2 true JPH0138857Y2 (en) | 1989-11-20 |
Family
ID=29902328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981107903U Granted JPS5813665U (en) | 1981-07-20 | 1981-07-20 | sealed storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5813665U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2597296Y2 (en) * | 1991-12-24 | 1999-07-05 | 新神戸電機株式会社 | Sealed alkaline storage battery |
-
1981
- 1981-07-20 JP JP1981107903U patent/JPS5813665U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5813665U (en) | 1983-01-28 |
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