JP2002042765A - Sealed type lead-acid battery - Google Patents
Sealed type lead-acid batteryInfo
- Publication number
- JP2002042765A JP2002042765A JP2000218531A JP2000218531A JP2002042765A JP 2002042765 A JP2002042765 A JP 2002042765A JP 2000218531 A JP2000218531 A JP 2000218531A JP 2000218531 A JP2000218531 A JP 2000218531A JP 2002042765 A JP2002042765 A JP 2002042765A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- battery
- holding plate
- valve body
- top surface
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Secondary Cells (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は密閉形鉛蓄電池に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed lead-acid battery.
【0002】[0002]
【従来の技術】密閉形電池、特に密閉形鉛蓄電池の安全
弁としては種々の構成が公開されている。例えば特開平
8−321295号公報に記載されたような電槽蓋に排
気弁装着部として構成した弁筒部にキャップ状の弁体を
装着し、電槽内圧の上昇により弁体が弁筒部からはずれ
ないよう、弁体の天面上に間隔をあけて弁押え板を設け
る構造が一般的に用いられている。2. Description of the Related Art Various configurations have been disclosed as safety valves for sealed batteries, particularly sealed lead-acid batteries. For example, a cap-shaped valve body is mounted on a valve cylinder portion configured as an exhaust valve mounting portion on a battery case lid as described in Japanese Patent Application Laid-Open No. 8-32295, and the valve body is raised by increasing the internal pressure of the battery case. In general, a structure in which a valve holding plate is provided on a top surface of a valve body at intervals so as not to come off.
【0003】一方、弁体は電槽内部の気密を検査する手
段としても利用されている。これは電槽内の気密が維持
されている場合には負極活物質での酸素ガス吸収反応に
より電槽内の気圧が大気圧よりも低くなり、結果として
弁体の天面が凹状に変形する現象を積極的に利用するも
のである。この現象を利用して電槽内の気密検査を行う
ために、前記した特開平8−321295号公報には排
気弁押え蓋すなわち弁押え板を弁体の天面を透視できる
程度の透明性のある材料で構成することが記載されてい
る。On the other hand, the valve body is also used as a means for checking the airtightness inside the battery case. This is because when the airtightness in the battery case is maintained, the gas pressure in the battery case becomes lower than the atmospheric pressure due to the oxygen gas absorption reaction in the negative electrode active material, and as a result, the top surface of the valve body is deformed into a concave shape The phenomenon is actively used. In order to perform an airtight inspection in the battery case by utilizing this phenomenon, Japanese Patent Application Laid-Open No. H8-32295 described above discloses that the exhaust valve retainer lid, that is, the valve retainer plate is transparent enough to see through the top surface of the valve body. It is described to be composed of a certain material.
【0004】しかしながら透明性を有する材料は不透明
な材料に比較して一般に高価である。また比較的安価で
あって、かつ良好な透明性がある塩化ビニル樹脂の使用
は環境上好ましくない。However, transparent materials are generally more expensive than opaque materials. The use of a vinyl chloride resin which is relatively inexpensive and has good transparency is not environmentally preferable.
【0005】また、電池の充放電を繰り返すうちに弁体
と弁筒部との間に塗布したシリコン樹脂オイル、さらに
は弁筒基部に残留していた硫酸分が弁体の天面に浸透
し、これらの液体分により弁体の天面と弁押え板とが密
着し、開閉弁圧が低下するという現象がある。このよう
な現象を避けるために図4に示すように円形の弁体Xの
外径よりも小さい外形を有する円形の貫通孔Yを弁押え
板Zにおいて弁体外径内に対応する位置に設けることが
行われてきている。In addition, as the battery is repeatedly charged and discharged, silicone resin oil applied between the valve body and the valve body, and sulfuric acid remaining on the valve body base penetrate into the top surface of the valve body. There is a phenomenon that the top surface of the valve body and the valve holding plate come into close contact with each other due to these liquid components, and the opening / closing valve pressure decreases. In order to avoid such a phenomenon, as shown in FIG. 4, a circular through-hole Y having an outer shape smaller than the outer diameter of the circular valve body X is provided in the valve holding plate Z at a position corresponding to the outer diameter of the valve body. Is being done.
【0006】ところがこのような円形の貫通孔Yを弁押
え板Zに設けた場合には弁体Xの天面の状態は非常に視
認しづらく、気密検査を容易にするという効果が損なわ
れてしまう。また、円形の貫通孔Yを設けても弁体Xの
天面の円周外縁が依然として全周にわたって弁押え板Z
と付着して容易にはずれず、弁体Xと弁筒部との接触長
さが短くなり、結果として開閉弁圧が規定よりも低くな
るという課題を有していた。However, when such a circular through hole Y is provided in the valve holding plate Z, the state of the top surface of the valve body X is very difficult to visually recognize, and the effect of facilitating an airtight inspection is impaired. I will. Further, even if the circular through-hole Y is provided, the outer peripheral edge of the top surface of the valve body X still has the valve holding plate Z over the entire circumference.
Therefore, there is a problem that the contact length between the valve body X and the valve cylinder becomes short, and as a result, the opening / closing valve pressure becomes lower than a specified value.
【0007】通常、密閉形鉛蓄電池では未化成極板で電
池を組み立てた後に注液して化成するいわゆる電槽化成
が広く用いられている。このような化成工程においては
比較的大電流で強制的に充電を行うのが通常であり、結
果として化成の初期と末期において極板群から酸素ガス
・水素ガスが発生する。In general, in a sealed lead-acid battery, a so-called battery case formation, in which a battery is assembled with an unformed electrode plate and then injected to form a battery, is widely used. In such a formation process, it is usual to forcibly charge the battery with a relatively large current. As a result, oxygen gas and hydrogen gas are generated from the electrode plate group at the beginning and the end of the formation.
【0008】このようなガスは通常、安全弁部を通して
排気されるが、極板群内には比較的潤沢な電解液が存在
しているため、ガスの排気に伴い、電解液もミストもし
くは液滴として排出される。このような電解液は弁筒部
で凝縮して電解液の液溜を形成する。このような液溜が
電池外に排出されることを防ぐために例えば特開平5−
217597号公報には中蓋と上蓋との間に吸液用シー
トを設けた構成が記載されている。弁筒部より排出され
た電解液はこのような吸液シートにより吸収されて電池
外への漏出を抑制することができるものの、部品点数、
組立工数の増加という面では好ましい構造ではなかっ
た。また、このような電解液の溢液は開閉弁圧を低くす
れば避けられるものの、市場等で長期間使用された場合
に気密性が損なわれる場合がある。[0008] Such a gas is usually exhausted through a safety valve. However, since a relatively abundant electrolyte solution is present in the electrode assembly, the electrolyte solution is also mist or droplets with the gas exhaustion. Is discharged as Such an electrolytic solution condenses in the valve barrel to form a liquid reservoir for the electrolytic solution. In order to prevent such a liquid reservoir from being discharged out of the battery, see, for example,
Japanese Patent Publication No. 217597 describes a configuration in which a liquid absorbing sheet is provided between an inner lid and an upper lid. Although the electrolyte discharged from the valve cylinder portion is absorbed by such a liquid absorbing sheet and can suppress leakage outside the battery, the number of parts,
The structure was not preferable in terms of increasing the number of assembling steps. Although such an overflow of the electrolytic solution can be avoided by lowering the on-off valve pressure, the airtightness may be impaired when used for a long time in a market or the like.
【0009】[0009]
【発明が解決しようとする課題】本発明は前記したよう
な密閉形鉛蓄電池の安全弁部で発生していた弁体と弁押
え板との付着と、これによる開閉弁圧の低下という課題
を解決するとともに、電槽化成中の溢液も少なく、か
つ、弁体天面の視認性を向上させて気密検査の精度を向
上できる密閉形鉛蓄電池を生産性を損なうことなく安価
に提供することを目的とするものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problem that the valve element and the valve holding plate adhere to each other at the safety valve portion of the sealed lead-acid battery and that the on-off valve pressure is reduced. And to provide a low-cost sealed lead-acid battery that reduces the amount of overflow during battery formation, improves the visibility of the top surface of the valve body, and improves the accuracy of hermetic inspection without compromising productivity. It is the purpose.
【0010】[0010]
【課題を解決するための手段】前記した課題を解決する
ために本発明の請求項1に記載の発明は極板群を収納す
る電槽開口部を覆う電槽蓋に構成された弁筒部に弁体を
装着し、この弁体の天面に対応するように弁押え板を電
槽蓋に装着もしくは接合した密閉形鉛蓄電池において、
弁体の外径寸法以上の長さ寸法と外形寸法に満たない幅
寸法を有する貫通孔を弁体の天面に対応して前記弁押え
板に設けることとしたものである。According to a first aspect of the present invention, there is provided a valve cylinder formed on a battery case cover for covering a battery case opening for accommodating an electrode plate group. In a sealed lead-acid battery in which a valve body is attached to and a valve holding plate is attached to or joined to the battery case lid so as to correspond to the top surface of this valve body,
A through hole having a length dimension equal to or larger than the outer diameter dimension of the valve body and a width dimension less than the outer dimension is provided in the valve holding plate corresponding to the top surface of the valve body.
【0011】このような請求項1記載の構成によれば、
弁体と弁押え板との付着を防止できるとともに弁体の天
面を容易に視認できるので気密検査の精度を向上するこ
とができる。According to the above configuration,
The adhesion between the valve body and the valve holding plate can be prevented, and the top surface of the valve body can be easily visually recognized, so that the accuracy of the airtightness inspection can be improved.
【0012】さらに本発明の請求項2に記載の発明は請
求項1に記載の構成を有する密閉形鉛蓄電池において、
弁押え板を覆うように電槽蓋に接合した上蓋を設け、こ
の上蓋の弁押え板に対向する面に貫通孔の長軸方向に交
差するとともに、弁押え板の上方向への変形を制限する
突起を設けた構成としたものである。この突起により弁
押え板の変位量が制限でき、開閉弁圧を高くすることが
できる。逆にいえば弁押え板を装着した状態での開閉弁
圧を低くすることができるので、化成をこの状態で行う
ことにより化成中の溢液を抑制することができる。そし
て化成終了後は上蓋を装着することにより容易に開閉弁
圧を高めることができ、市場で長期間使用された場合で
の安全弁の機密性を保持し、電池の信頼性を向上するこ
とができる。According to a second aspect of the present invention, there is provided a sealed lead-acid battery having the configuration according to the first aspect,
An upper lid joined to the battery case lid is provided so as to cover the valve retainer plate, and the upper lid intersects the surface facing the valve retainer plate in the longitudinal direction of the through-hole and limits upward deformation of the valve retainer plate. This is a configuration in which projections are provided. The amount of displacement of the valve holding plate can be limited by this projection, and the opening / closing valve pressure can be increased. Conversely, since the opening / closing valve pressure in a state where the valve holding plate is mounted can be lowered, overflowing during the formation can be suppressed by performing the formation in this state. After the formation is completed, the opening / closing valve pressure can be easily increased by attaching the top lid, and the confidentiality of the safety valve when used for a long time in the market can be maintained, and the reliability of the battery can be improved. .
【0013】本発明の請求項3に記載の発明は請求項1
もしくは請求項2に記載の構成を有する密閉形鉛蓄電池
において、弁押え板は不透明で前記弁体を透視できない
色調を有することとしたものである。請求項1もしくは
請求項2に記載の構成によれば弁押え板を透視して弁体
の状態を視認する必要がなくなることから、価格面もし
くは環境面で好ましくない透明樹脂材料を使う必要な
く、従来からの安価で環境上悪影響のない好ましい不透
明樹脂材料を用いることができる。The invention described in claim 3 of the present invention is claim 1
Alternatively, in the sealed lead-acid battery having the configuration described in claim 2, the valve holding plate is opaque and has a color that cannot be seen through the valve element. According to the configuration of claim 1 or claim 2, since it is not necessary to see through the valve holding plate and visually check the state of the valve element, there is no need to use a transparent resin material that is not preferable in terms of cost or environment, It is possible to use a conventional opaque resin material which is inexpensive and has no adverse effect on the environment.
【0014】[0014]
【発明の実施の形態】本発明の実施の形態について図面
を用いて説明する。Embodiments of the present invention will be described with reference to the drawings.
【0015】(第1の実施の形態)図1は本発明の第1
の実施の形態による密閉形鉛蓄電池の要部を示す図であ
る。FIG. 1 shows a first embodiment of the present invention.
It is a figure which shows the principal part of the sealed lead storage battery by embodiment.
【0016】1は極板群(図示せず)を収納するセル室
1aを備えた電槽であり、電槽蓋2が接合された構成で
ある。電槽蓋2にはそれぞれのセル室1aに対応して弁
筒部3を設ける。弁筒部3は電槽蓋2に設けた凹部4の
底面を基底面としている。Reference numeral 1 denotes a battery case provided with a cell chamber 1a for accommodating a group of electrode plates (not shown), and has a structure in which a battery case cover 2 is joined. The battery case lid 2 is provided with valve cylinder portions 3 corresponding to the respective cell chambers 1a. The valve cylinder part 3 has the bottom surface of the concave portion 4 provided in the battery case cover 2 as a base surface.
【0017】弁筒部3にはキャップ状の弁体5を装着す
る。この弁体5としてはクロロプレンゴム、EPDM等
の合成ゴム材が一般に用いられている。また、弁筒部3
と弁体5との間にはシリコン樹脂オイルもしくはフッ素
系樹脂グリス等のシーリング剤を塗着して弁筒部3と弁
体5間の微小な隙間に上記シーリング剤が浸透して両者
の気密性を維持している。A cap-shaped valve element 5 is mounted on the valve cylinder 3. As the valve 5, a synthetic rubber material such as chloroprene rubber or EPDM is generally used. In addition, the valve cylinder 3
A sealing agent such as silicone resin oil or fluorine-based resin grease is applied between the valve body 5 and the valve body 5, and the sealing agent permeates into minute gaps between the valve cylinder portion 3 and the valve body 5, so that both are airtight. Maintain their sexuality.
【0018】電槽蓋2には弁押え板6を装着する。図1
の例では弁押え板6に設けた穴7に電槽蓋2から突出す
る嵌合突出部8が嵌合することにより電槽蓋2に弁押え
板6が固定されている。なお、弁押え板6は一列状態に
配列された複数の弁体5を一括して覆う構造である。A valve holding plate 6 is mounted on the battery case cover 2. Figure 1
In the example, the valve holding plate 6 is fixed to the battery case cover 2 by fitting a fitting projection 8 projecting from the battery case cover 2 into a hole 7 provided in the valve holding plate 6. The valve holding plate 6 has a structure that collectively covers the plurality of valve elements 5 arranged in a line.
【0019】弁押え板6には弁体5に対応して貫通孔9
が設けられている。貫通孔9は細長い形状をしており、
長軸方向の長さLは弁体5の外形dよりも長くかつ、短
軸方向の幅wは弁体5の外径dよりも短くなるように構
成する。この構成により貫通孔9から弁体5の天面5a
を直径方向に渡って視認することができ、天面5aが凹
状態となっているのか、あるいはそうでない状態になっ
ているのかを精度良く確実に確認することができる。The valve holding plate 6 has a through hole 9 corresponding to the valve body 5.
Is provided. The through hole 9 has an elongated shape,
The length L in the long axis direction is longer than the outer shape d of the valve element 5, and the width w in the short axis direction is shorter than the outer diameter d of the valve element 5. With this configuration, the top surface 5 a of the valve body 5 is
Can be visually recognized in the diameter direction, and whether the top surface 5a is in a concave state or not can be accurately and reliably confirmed.
【0020】また、このような貫通孔9の形状により天
面5aの外縁5bが全周にわたって弁押え板6と付着す
ることを防止できる。Further, the shape of the through hole 9 prevents the outer edge 5b of the top surface 5a from adhering to the valve holding plate 6 over the entire circumference.
【0021】ここで貫通孔9の形成方向としては図1に
示したように弁押え板6の電槽蓋2との固定部つまり穴
7およびこれに嵌合している嵌合突出部8の部分の間を
結んだ線上に概平行に設けることが好ましい。充電によ
りセル室1aの内圧が上昇した場合、弁体5は弁押え板
6の方向へ移動する。この時に弁押え板6の貫通孔9の
両側に対応する部分が線条部6aを形成してこの線条部
6aが前記した固定部を支点として弧状にゆるやかに弾
性変形して弁体5の移動を制限することができるからで
ある。一方、図2に示したように貫通孔9’の長軸方向
を固定部間の線上に対して交差するように、特に直角に
交差するように形成する場合には弁押え板6’の幅寸法
Tをより幅広に形成する必要があるばかりか、弁押え板
6’の貫通孔9’の長軸方向の先端部に対応する応力集
中部分6bに集中的に曲げ応力がかかる。このような曲
げ応力により応力集中部分6bが破断に至るため図2に
示したような構成は好ましくない。Here, as shown in FIG. 1, the direction in which the through hole 9 is formed is the fixing portion of the valve holding plate 6 with the battery case lid 2, that is, the hole 7 and the fitting projecting portion 8 fitted in this hole. It is preferable to provide them substantially in parallel on a line connecting the portions. When the internal pressure of the cell chamber 1a increases due to charging, the valve element 5 moves toward the valve holding plate 6. At this time, portions corresponding to both sides of the through hole 9 of the valve holding plate 6 form a striated portion 6a, and the striated portion 6a is gently elastically deformed in an arc shape with the fixed portion as a fulcrum, and the valve body 5 This is because movement can be restricted. On the other hand, as shown in FIG. 2, when the through-hole 9 'is formed so as to intersect the major axis direction with the line between the fixed portions, particularly at a right angle, the width of the valve holding plate 6' is increased. In addition to the need to make the dimension T wider, bending stress is concentrated on the stress concentration portion 6b corresponding to the longitudinal end of the through hole 9 'of the valve holding plate 6'. Since the stress concentration portion 6b is broken by such bending stress, the configuration as shown in FIG. 2 is not preferable.
【0022】次に弁押え板6を覆うように上蓋(図示せ
ず)を電槽蓋2に装着して本発明の密閉形鉛蓄電池を得
ることができる。Next, an upper lid (not shown) is attached to the battery case lid 2 so as to cover the valve holding plate 6, whereby a sealed lead-acid battery of the present invention can be obtained.
【0023】(第2の実施の形態)図1に示した第1の
実施の形態による密閉形鉛蓄電池に上蓋10を装着した
形態が図3に示した本発明の第2の実施の形態である。
上蓋10の弁押え板6側には弁押え板6の上方への変位
を制限する突起11が設けられている。この突起11は
その長軸方向が貫通孔9と交差するように設けられてい
る。そして突起11の長軸方向の長さfは貫通孔9の短
軸方向の長さwよりも長く形成する必要がある。このよ
うな突起11は弁押え板6の上方への変位を制限するの
で、このような上蓋10を装着することにより、開閉弁
圧を高く保持することができる。(Second Embodiment) The sealed lead-acid battery according to the first embodiment shown in FIG. 1 is provided with an upper lid 10 in the second embodiment of the present invention shown in FIG. is there.
A projection 11 for limiting upward displacement of the valve holding plate 6 is provided on the valve holding plate 6 side of the upper lid 10. The projection 11 is provided so that its major axis direction intersects the through hole 9. The length f of the protrusion 11 in the long axis direction must be longer than the length w of the through hole 9 in the short axis direction. Since such a protrusion 11 restricts the upward displacement of the valve holding plate 6, by mounting such an upper lid 10, the opening / closing valve pressure can be kept high.
【0024】すなわち、上蓋10を装着する以前の段階
に比較して上蓋10を装着した以後の状態では開閉弁圧
は増加する。よって上蓋10を装着する以前の段階で電
槽化成を行えば開閉弁圧は比較的低いために化成充電時
の溢液を抑制することができる。そして化成終了後に上
蓋10を電槽蓋2に接合すれば開閉弁圧値は高くなり、
電池が長期間にわたって使用された場合での弁体の機密
性を維持することができる。That is, in the state after the upper lid 10 is mounted, the opening / closing valve pressure increases compared to the stage before the upper lid 10 is mounted. Therefore, if the battery case formation is performed before the upper lid 10 is mounted, the opening / closing valve pressure is relatively low, so that the overflow during the formation charging can be suppressed. Then, if the upper lid 10 is joined to the battery case lid 2 after the formation, the on-off valve pressure value becomes higher,
The confidentiality of the valve body when the battery is used for a long period of time can be maintained.
【0025】ここで弁押え板6の上方への変位を抑制す
る手段として突起11を形成した理由について詳述す
る。上蓋10を装着した段階での弁押え板6の上面と上
蓋10の下面との間のクリアランスすなわち図3(b)
中に示すKの寸法は電池完成状態での開閉弁圧を決定す
る重要なファクターの一つである。このクリアランス量
により弁押え板6のとりうる変形量が決定されるからで
ある。Here, the reason why the protrusion 11 is formed as a means for suppressing the upward displacement of the valve holding plate 6 will be described in detail. The clearance between the upper surface of the valve holding plate 6 and the lower surface of the upper cover 10 when the upper cover 10 is mounted, that is, FIG.
The dimension of K shown therein is one of the important factors that determine the on-off valve pressure in the completed battery state. This is because the possible amount of deformation of the valve holding plate 6 is determined by this clearance amount.
【0026】本発明においては突起11の突出長さがこ
のクリアランスKとなる。通常上蓋10と電槽蓋2とは
圧力をかけながら超音波溶着されるが、この溶着過程に
おいて、突起11が弁押え板6と接触した時点で位置決
めされて溶着が行われるのでこのクリアランスKを一定
に保持することができる。これと同時に突起11は前記
した弁押え板6と電槽蓋2との固定部とともに弁押え板
6の線条部6aの支点となる。電池内圧の上昇により弁
体が上昇した場合には弁押え板は固定部−突起11間が
弧状に変形することになる。In the present invention, the length of the protrusion 11 is the clearance K. Normally, the upper lid 10 and the battery case lid 2 are ultrasonically welded while applying pressure. In this welding process, the projection 11 is positioned when the projection 11 comes into contact with the valve holding plate 6 and welding is performed. It can be kept constant. At the same time, the projection 11 serves as a fulcrum of the linear portion 6a of the valve holding plate 6 together with the fixing portion between the valve holding plate 6 and the battery case cover 2 described above. When the valve body rises due to an increase in battery internal pressure, the valve presser plate is deformed in an arc shape between the fixed portion and the projection 11.
【0027】よってこの弧状の変形量と必要とする開閉
弁圧値に応じて突起11の突出量を決定すればよい。ま
たこの突起部は線条部6aの支点としてのみ作用させる
ために突起11と線条部6aとの接触部の線条部6a方
向の長さをなるべく短く構成することが好ましい。よっ
て突起11は線条部6aに直交するように、すなわち貫
通孔9の長軸方向に直交するように設けることが好まし
い。Therefore, the protrusion amount of the protrusion 11 may be determined according to the arc-shaped deformation amount and the required on-off valve pressure value. In addition, it is preferable that the length of the contact portion between the protrusion 11 and the striated portion 6a in the direction of the striated portion 6a be as short as possible so that the protrusion acts only as a fulcrum of the striated portion 6a. Therefore, it is preferable that the protrusion 11 be provided so as to be orthogonal to the linear portion 6a, that is, to be orthogonal to the long axis direction of the through hole 9.
【0028】突起11の長軸方向が線条部6aと平行に
なるように接触した場合には線条部6aの大部分が突起
11によりその上方向への変位が阻害されて開閉弁圧値
が極端に高いものが発生するために好ましくない。When the major axis of the projection 11 contacts the filament 6a so as to be parallel to the filament 6a, most of the filament 6a is prevented from being displaced upward by the projection 11, and the opening / closing valve pressure value is reduced. Is unfavorably generated because of extremely high values.
【0029】さらに第1および第2の実施形態におい
て、弁押え板として不透明な材質を使用することが好ま
しい。不透明な材質は安価であり、本発明の構成によれ
ばこのような不透明な材料を使用しても弁体5の天面5
aの凹状態を検査することになんの不都合も生じない。
また、従来価格上の制限から使用せざるを得なかった透
明な塩化ビニル樹脂を使用する必要もなくなり、環境上
も好ましい。Further, in the first and second embodiments, it is preferable to use an opaque material for the valve holding plate. The opaque material is inexpensive, and according to the configuration of the present invention, even if such an opaque material is used, the top surface 5
Inspection of the concave state of a does not cause any inconvenience.
In addition, there is no need to use a transparent vinyl chloride resin which had to be used due to a limitation in price in the past, which is environmentally preferable.
【0030】(効果確認の実施例)本発明の効果を確認
する実験をおこなった。その実験結果を以下の効果確認
の実施例1と2により説明する。(Example of effect confirmation) An experiment for confirming the effect of the present invention was conducted. The experimental results will be described with reference to Examples 1 and 2 for confirming the following effects.
【0031】効果確認の実施例1 第2の実施の形態による密閉形鉛蓄電池を電池Aとし、
図4に示した従来例の密閉形鉛蓄電池を電池Bとしその
両電池について60℃雰囲気中で4週間1セルあたり
2.3Vの定電圧充電を行った時の安全弁の状態を確認
した。従来例の電池Bは図4に示したように弁押え板Z
に弁体Xの外径よりも小さい内径を有する円形の貫通孔
Yを設けたものである。Example 1 of Effect Confirmation The sealed lead-acid battery according to the second embodiment is referred to as a battery A,
The sealed lead storage battery of the conventional example shown in FIG. 4 was referred to as a battery B, and the state of the safety valve was confirmed when both batteries were charged at a constant voltage of 2.3 V per cell for 4 weeks in a 60 ° C. atmosphere. As shown in FIG. 4, the battery B of the conventional example has a valve holding plate Z.
Is provided with a circular through-hole Y having an inner diameter smaller than the outer diameter of the valve body X.
【0032】前記した充電が終了した後に25℃雰囲気
下で24時間放置して常温にもどしてからこれらの電池
について安全弁の状態を確認した。After the completion of the charging, the battery was left in an atmosphere of 25 ° C. for 24 hours to return to room temperature, and the state of the safety valve was checked for these batteries.
【0033】その結果本発明の電池Aについては弁体5
の天面が凹状態であり、電池内部が正常に減圧している
ことが確認できた。また、弁体5と弁押え板6との付着
も発生していなかった。As a result, for the battery A of the present invention, the valve 5
It was confirmed that the top surface of the battery was in a concave state, and the inside of the battery was normally depressurized. Further, no adhesion between the valve body 5 and the valve holding plate 6 occurred.
【0034】一方、従来例の電池Bに関しては弁体Xの
天面と弁押え板Zとが付着しており、天面の状態を確認
できる状態ではなかった。On the other hand, in the conventional battery B, the top surface of the valve body X and the valve holding plate Z adhered, and the state of the top surface could not be confirmed.
【0035】次にこれらの電池について開閉弁圧を測定
した。その結果を表1に示す。Next, the opening / closing valve pressure of these batteries was measured. Table 1 shows the results.
【0036】[0036]
【表1】 [Table 1]
【0037】表1に示した結果から従来例の電池Bに関
しては60℃充電の前後で開閉弁圧が著しく低下してお
り、特に開閉弁圧値の最低も非常に低く、弁機能の低下
が著しいことが確認できた。一方、本発明例の電池Aで
は従来例の電池Bで認められたような著しい低下現象は
発生せず、開閉弁圧値は安定していた。From the results shown in Table 1, with respect to the battery B of the conventional example, the opening / closing valve pressure was significantly reduced before and after charging at 60 ° C. In particular, the minimum value of the opening / closing valve pressure was very low, and the valve function deteriorated. It was confirmed that it was remarkable. On the other hand, in the battery A of the present invention, the remarkable decrease phenomenon as observed in the battery B of the conventional example did not occur, and the on-off valve pressure value was stable.
【0038】効果確認の実施例2 本発明の第2の実施の形態の電池において弁押え板6に
突起11を設けたものと突起11を設けないものとの開
閉弁圧がどのように変化するかを確認した。具体的には
第2の実施の形態のように突起11を設けたものと突起
が無いものとによる開閉弁圧のばらつきを測定したとこ
ろ表2に示したような結果が得られた。Example 2 of Confirming the Effect In the battery according to the second embodiment of the present invention, how the opening / closing valve pressure of the battery provided with the projection 11 on the valve holding plate 6 and the battery provided without the projection 11 changes. I checked. Specifically, when the variation of the on-off valve pressure was measured between the case where the protrusion 11 was provided and the case where the protrusion was not provided as in the second embodiment, the results shown in Table 2 were obtained.
【0039】[0039]
【表2】 [Table 2]
【0040】表2に示した結果から突起11を設けるこ
とにより比較的高い開閉弁圧を安定して得られることが
確認できた。From the results shown in Table 2, it was confirmed that a relatively high on-off valve pressure can be stably obtained by providing the projections 11.
【0041】[0041]
【発明の効果】本発明の構成によれば、従来の密閉形鉛
蓄電池の安全弁部で発生していた弁体と弁押え板との付
着とこれによる開閉弁圧の低下という課題を解決すると
ともに、電槽化成中の溢液も少なく、かつ、弁体天面の
視認性を向上させて気密検査の精度を向上できる密閉形
鉛蓄電池を生産性を損なうことなく安価に提供すること
ができるものであり、従って本発明は工業上、極めて有
用である。According to the structure of the present invention, it is possible to solve the problem of the adhesion between the valve element and the valve holding plate, which has occurred in the safety valve portion of the conventional sealed lead-acid battery, and the reduction of the on-off valve pressure due to this. , Which can provide an inexpensive sealed lead-acid battery that can reduce the overflow during battery formation and improve the visibility of the top surface of the valve body to improve the accuracy of the airtight inspection without impairing the productivity Therefore, the present invention is extremely useful industrially.
【図1】(a)本発明の第1の実施の形態による密閉形
鉛蓄電池の要部を示す上面図 (b)同要部の断面図FIG. 1A is a top view showing a main part of a sealed lead-acid battery according to a first embodiment of the present invention. FIG. 1B is a sectional view of the main part.
【図2】図1の貫通孔と方向が異る他の弁押え板を示す
要部の上面図FIG. 2 is a top view of a main part showing another valve holding plate having a direction different from that of the through hole of FIG. 1;
【図3】(a)本発明の第2の実施の形態による密閉形
鉛蓄電池の要部を示す上面図 (b)同要部の断面図FIG. 3A is a top view showing a main part of a sealed lead-acid battery according to a second embodiment of the present invention. FIG. 3B is a cross-sectional view of the main part.
【図4】従来例の密閉形鉛蓄電池の要部を示す上面図FIG. 4 is a top view showing a main part of a conventional sealed lead-acid battery.
1 電槽 1a セル室 2 電槽室 3 弁筒部 4 凹部 5 弁体 5a 天面 5b 外縁 6,6’ 弁押え板 6a 線条部 6b 応力集中部分 7 穴 8 嵌合突出部 9,9’ 貫通孔 10 上蓋 11 突起 DESCRIPTION OF SYMBOLS 1 Battery case 1a Cell chamber 2 Battery case room 3 Valve cylinder part 4 Concave part 5 Valve body 5a Top surface 5b Outer edge 6,6 'Valve holding plate 6a Wire part 6b Stress concentration part 7 Hole 8 Fitting protrusion 9,9' Through hole 10 Top cover 11 Projection
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉村 恒典 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 Fターム(参考) 5H011 AA09 AA12 AA13 AA17 FF02 KK01 5H012 AA07 BB02 CC01 DD03 GG01 5H028 AA01 AA07 BB01 CC04 CC08 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tsuneori Yoshimura 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. BB01 CC04 CC08
Claims (3)
槽蓋に構成した弁筒部に弁体を装着し、前記弁体の天面
に対応するように弁押え板を前記電槽蓋に装着もしくは
接合した密閉形鉛蓄電池において、前記弁体の外形寸法
以上の長さ寸法と前記外形寸法に満たない幅寸法を有す
る貫通孔を前記弁体の天面に対応して前記弁押え板に設
けたことを特徴とする密閉形鉛蓄電池。1. A valve body is mounted on a valve cylinder formed on a battery case cover for covering an opening of a battery case for accommodating an electrode plate group, and the valve holding plate is fitted to a top surface of the valve body. In a sealed lead-acid battery mounted or joined to a battery case lid, a through-hole having a length dimension equal to or larger than the outer dimension of the valve body and a width dimension less than the outer dimension is formed in correspondence with a top surface of the valve body. A sealed lead-acid battery provided on a valve holding plate.
接合した上蓋を設け、前記上蓋の前記弁押え板に対向す
る面に前記貫通孔の長軸方向に交差するとともに、前記
弁押え板の上方向への変形を制限する突起を設けたこと
を特徴とする請求項1に記載の密閉形鉛蓄電池。2. An upper lid joined to the battery case cover so as to cover the valve retainer plate, wherein the upper cover intersects a surface of the upper lid facing the valve retainer plate in a longitudinal direction of the through-hole, and the valve covers the valve. 2. The sealed lead-acid battery according to claim 1, further comprising a projection for limiting upward deformation of the holding plate.
できない色調を有することを特徴とする請求項1もしく
は2に記載の密閉形鉛蓄電池。3. The sealed lead-acid battery according to claim 1, wherein the valve holding plate is opaque and has a color that cannot see through the valve body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000218531A JP2002042765A (en) | 2000-07-19 | 2000-07-19 | Sealed type lead-acid battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000218531A JP2002042765A (en) | 2000-07-19 | 2000-07-19 | Sealed type lead-acid battery |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2002042765A true JP2002042765A (en) | 2002-02-08 |
Family
ID=18713459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000218531A Pending JP2002042765A (en) | 2000-07-19 | 2000-07-19 | Sealed type lead-acid battery |
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Country | Link |
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JP (1) | JP2002042765A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005190839A (en) * | 2003-12-25 | 2005-07-14 | Yuasa Corp | Control valve type lead-acid battery |
JP2012069644A (en) * | 2010-09-22 | 2012-04-05 | Nippon Chemicon Corp | Electrolytic capacitor |
-
2000
- 2000-07-19 JP JP2000218531A patent/JP2002042765A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005190839A (en) * | 2003-12-25 | 2005-07-14 | Yuasa Corp | Control valve type lead-acid battery |
JP4715092B2 (en) * | 2003-12-25 | 2011-07-06 | 株式会社Gsユアサ | Control valve type lead acid battery |
JP2012069644A (en) * | 2010-09-22 | 2012-04-05 | Nippon Chemicon Corp | Electrolytic capacitor |
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