JP2890634B2 - Sealed lead-acid battery - Google Patents
Sealed lead-acid batteryInfo
- Publication number
- JP2890634B2 JP2890634B2 JP2076008A JP7600890A JP2890634B2 JP 2890634 B2 JP2890634 B2 JP 2890634B2 JP 2076008 A JP2076008 A JP 2076008A JP 7600890 A JP7600890 A JP 7600890A JP 2890634 B2 JP2890634 B2 JP 2890634B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- rubber
- acid battery
- sealed lead
- battery case
- 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
- 239000002253 acid Substances 0.000 title claims description 13
- 229920001971 elastomer Polymers 0.000 claims description 29
- 239000004014 plasticizer Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920001973 fluoroelastomer Polymers 0.000 description 5
- 229920002545 silicone oil Polymers 0.000 description 4
- 229920002943 EPDM rubber Polymers 0.000 description 2
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
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
【発明の詳細な説明】 産業上の利用分野 本発明は、密閉形鉛蓄電池の安全弁に関するものであ
る。Description: TECHNICAL FIELD The present invention relates to a safety valve for a sealed lead-acid battery.
従来の技術 この種の密閉形鉛蓄電池は、代表的な例として、第１
図に示す通り、鉛蓄電池内で発生するガスを排出する一
方、外部の空気を鉛蓄電池内に入れないための安全弁と
して、キャップ形のゴム弁が使用されていた。2. Description of the Related Art This type of sealed lead-acid battery is a typical example of the first type.
As shown in the figure, a cap-type rubber valve has been used as a safety valve for discharging gas generated in the lead-acid battery while preventing external air from entering the lead-acid battery.
図に示す構成において、１が電槽、２が電槽１の上部
開口部を覆う中ぶた、３はこの中ぶた２の上面部に設け
た凹部で、この凹部３の中央には排気口４をパイプ状に
形成し、その先端はキャップ形ゴム弁５で気密的に閉栓
されていた。In the configuration shown in the figure, 1 is a battery case, 2 is a middle cover covering the upper opening of the battery case 1, 3 is a concave portion provided on the upper surface of the middle cover 2, and an exhaust port 4 is provided at the center of the concave portion 3. Was formed in a pipe shape, and the tip was hermetically closed with a cap-type rubber valve 5.
ガス発生により電池内圧が上昇した場合は、キャップ
形ゴム弁５の内壁からの圧力でゴム弁５が膨脹し、気密
性が開放されてガスが中ぶた２と上ぶた７との間から外
部に排出される。When the internal pressure of the battery rises due to gas generation, the rubber valve 5 expands due to the pressure from the inner wall of the cap-type rubber valve 5, the airtightness is released, and the gas flows from between the middle lid 2 and the upper lid 7 to the outside. Is discharged.
排出圧力としては、電槽が合成樹脂製であるため、強
度上問題のない圧力として、内圧が外圧に対して、100
〜200mmHg上昇すれば開放されるようにしている。この
ようにガスが排出される場合は、鉛蓄電池の充電時であ
るが、放電時等には逆に電槽内の圧力は減少し、キャッ
プ形ゴム形５は、排気口４のパイプに密着し外気を遮断
する。さらに気密性をよくするためゴム弁の内側にシー
ルオイルとして一般的に耐酸性のあるシリコーンオイル
を使用している。As the discharge pressure, since the battery case is made of synthetic resin, the internal pressure is 100
It is designed to be released when it rises by ~ 200mmHg. When the gas is discharged in this way, it is at the time of charging the lead storage battery, but at the time of discharging or the like, the pressure in the battery case decreases. And shut off the outside air. In order to further improve airtightness, an acid-resistant silicone oil is generally used as a seal oil inside the rubber valve.
このような条件で使用されるゴム弁としては、耐酸性
をもつクロロプレンやEPDMを材料とし、使用して100〜2
00mmHgの内圧上昇で開弁するように比較的やわらかく、
のびやすいシュアー硬度（HS）40〜50°のゴムを使用し
ていた。The rubber valve used under such conditions is made of acid-resistant chloroprene or EPDM,
Relatively soft to open with a rise in internal pressure of 00mmHg,
It used rubber with a Sure hardness (HS) of 40-50 °, which easily spreads.
発明が解決しようとする課題 ゴム材料としてクロロプレンやEPDMの硬度を40〜50°
に保つためには、多くの場合、可塑剤又は軟化剤を使用
してゴムの硬度を下げていた。Problems to be Solved by the Invention The hardness of chloroprene or EPDM as a rubber material is 40 to 50 °
In many cases, a plasticizer or softener was used to reduce the hardness of the rubber.
しかし従来のこのようなゴムでは、長期間使用時にゴ
ム中の可塑剤が排気口のパイプ状樹脂部分へ移行し、パ
イプとゴム弁とがくっついてしまう。さらにシールオイ
ル中への可塑剤の移行が加わり、ゴムの硬度が上昇する
と共に寸法も縮んでしまう。そのため、電池内圧が上昇
しても所定圧力ではガスが排出されにくくなり、内圧が
高まって電槽がふくれたり、割れたりするという問題が
あった。However, in such a conventional rubber, the plasticizer in the rubber migrates to the pipe-shaped resin portion of the exhaust port during long-term use, and the pipe and the rubber valve stick together. Further, the transfer of the plasticizer into the seal oil is added, so that the hardness of the rubber is increased and the size is reduced. For this reason, even if the internal pressure of the battery increases, it is difficult to discharge gas at a predetermined pressure, and there is a problem that the internal pressure increases and the battery case is swollen or broken.
さらにゴム中の可塑剤は、電槽等の樹脂に対して、害
のあるものが多く、シールオイルを媒体として、樹脂材
料中に侵入していき、長期の間に電槽が割れてしまうと
いう問題があった。Furthermore, many plasticizers in rubber are harmful to the resin in the battery case, etc., and penetrate into the resin material using the seal oil as a medium, and the battery case breaks for a long time. There was a problem.
課題を解決するための手段 本発明は、このような、可塑剤をつかうゴム材質にか
えて、可塑剤を必要とせず、それ自体でシュアー硬度
（HS）40〜50°を有したフッ素ゴムをゴム弁材料として
使用するものである。Means for Solving the Problems The present invention provides a fluororubber having a Sure hardness (HS) of 40 to 50 ° by itself without using a plasticizer instead of a rubber material using a plasticizer. It is used as a rubber valve material.
作用 フッ素ゴムは可塑剤等を使用しておらずゴム自体も耐
酸性・耐油性を有している。したがって、その寸法と硬
度の経時変化はおきにくく、弁の動作圧力は長期間安定
しており、電槽形成樹脂に対しても安全なゴム弁となり
うる。Function Fluororubber does not use a plasticizer or the like, and the rubber itself has acid resistance and oil resistance. Therefore, the size and hardness of the valve hardly change with time, the operating pressure of the valve is stable for a long time, and the rubber valve can be a safe rubber valve even for the resin for forming the battery case.
実施例 以下本発明の実施例の密閉形鉛蓄電池用安全弁につい
て説明する。その構造は第１図に示した代表例と同じで
あり、ゴム弁５をフッ素ゴムとし、そのシュアー硬度
（HS）を40〜50°としている。ゴム弁の硬度（HS）が40
°以下であると、開弁圧力が50mmHgと低く、電池の密閉
性に問題がある。又逆に50°以上であると開弁圧が250m
mHg以上となり、電槽に対してストレスがかかりすぎて
好ましくない。Example Hereinafter, a safety valve for a sealed lead-acid battery according to an example of the present invention will be described. Its structure is the same as that of the representative example shown in FIG. 1. The rubber valve 5 is made of fluoro rubber, and its Sure hardness (HS) is set to 40 to 50 °. Rubber valve hardness (HS) is 40
If it is less than °, the valve opening pressure is as low as 50 mmHg, and there is a problem in the tightness of the battery. Conversely, if it is more than 50 °, the valve opening pressure will be 250m
mHg or more, which is not preferable because stress is excessively applied to the battery case.
ここでのゴム弁の寸法は直径7.0mm,高さ5.5mm肉厚0.8
mmを使用しているが、これより小さい弁でも大きい弁で
も、弁座やパイプ状排気口の寸法に合わせれば使用する
ことができる。シールオイルにはシリコーンオイルを使
用したが、シリコーンオイルは長期間使用すると分解が
起こり、弁座の樹脂とゴム弁との相互の吸着力が上昇す
るので多少弁動作圧力が上がる。しかしシリコーンオイ
ルにかわり、さらに安定性のあるフッ素オイルを使用す
ると、弁動作圧力は上がることはない。第２図は、従来
の技術による弁と、本発明による弁の動作圧力の経時変
化を60℃で加速して調査した結果である。この結果から
従来の弁によるものは60℃１か月を過ぎたところから開
弁圧が上昇し、２か月では、500mmHgをこえている。と
ころがフッ素ゴムは３か月以上たっても安定しており、
さらにフッ素オイルを使用すると、５か月を過ぎても安
定している。２か月時点の従来のゴム弁の寸法を調べる
と直径が約５％縮んでおり、その硬度も60°をこえてい
た。ところが、フッ素ゴム弁は５か月時点でも寸法の変
化は全くみられなく、すぐれた弁であることがわかる。The dimensions of the rubber valve here are 7.0 mm in diameter, 5.5 mm in height and 0.8 in wall thickness.
Although mm is used, smaller or larger valves can be used if they are matched to the dimensions of the valve seat and the pipe-shaped exhaust port. Silicone oil was used as the seal oil. However, if silicone oil is used for a long period of time, decomposition will occur, and the mutual attraction between the resin of the valve seat and the rubber valve will increase. However, when a more stable fluorine oil is used instead of the silicone oil, the valve operating pressure does not increase. FIG. 2 shows the results of an investigation of the change over time in the operating pressure of the valve according to the prior art and the valve according to the invention, accelerated at 60 ° C. From this result, the valve opening pressure of the valve using the conventional valve was increased after one month at 60 ° C., and exceeded 500 mmHg in two months. However, fluororubber is stable for more than three months,
Furthermore, when fluorine oil is used, it is stable even after 5 months. Examining the dimensions of the conventional rubber valve at two months, the diameter was reduced by about 5%, and the hardness was also over 60 °. However, the fluoro rubber valve shows no change in dimensions even after 5 months, indicating that it is an excellent valve.
発明の効果 以上のように本発明によれば次のような効果が得られ
る。Effects of the Invention As described above, according to the present invention, the following effects can be obtained.
（１）長期間の使用に際しても、弁の開弁作動圧力を初
期状態のまま一定に保つことができるため、内圧増加に
よる電槽のふくれや割れ等はなくなる。(1) Even when used for a long period of time, the valve opening operation pressure of the valve can be kept constant in the initial state, so that there is no blistering or cracking of the battery case due to an increase in the internal pressure.
（２）電槽材料の樹脂に対しても、可塑剤等の有害物質
を含んでいないため、可塑剤が電槽に作用して電槽の割
れをおこすことがなく、安全な密閉形鉛蓄電池とするこ
とができた。(2) A safe sealed lead-acid battery that does not contain harmful substances such as plasticizers even for the resin of the battery case material, so that the plasticizer does not act on the battery case and cause the battery case to crack. And could be.
第１図は代表的な密閉形鉛蓄電池の安全弁部分を示す断
面図、第２図は本発明による弁と従来の弁の動作圧力の
経時変化を示した図である。 １……電槽、２……中ぶた、４……排気口、５……ゴム
弁、７……上ぶた。FIG. 1 is a sectional view showing a safety valve portion of a typical sealed lead-acid battery, and FIG. 2 is a view showing a change over time of operating pressure of a valve according to the present invention and a conventional valve. 1 ... battery case, 2 ... middle lid, 4 ... exhaust port, 5 ... rubber valve, 7 ... top lid.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−133667（ＪＰ，Ａ) 実開 昭60−26172（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) H01M 2/12 102 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-62-133667 (JP, A) JP-A-60-26172 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) H01M 2/12 102
Claims (2)
プ形ゴム弁で封口した構造であって、前記ゴム弁の材質
がシュアー硬度（HS）40〜50°で可塑剤を含まないフッ
素ゴムであることを特徴とする密閉形鉛蓄電池。1. A structure in which a pipe-shaped exhaust port provided at an upper part of a battery case is sealed with a cap-shaped rubber valve, wherein the rubber valve is made of a material having a Sure hardness (HS) of 40 to 50 ° and containing no plasticizer. A sealed lead-acid battery characterized by being rubber.
フッ素オイルを塗布したことを特徴とする特許請求の範
囲第１項記載の密閉形鉛蓄電池。2. The sealed lead-acid battery according to claim 1, wherein fluorine oil is applied inside the rubber valve or outside the pipe-shaped exhaust port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2076008A JP2890634B2 (en) | 1990-03-26 | 1990-03-26 | Sealed lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2076008A JP2890634B2 (en) | 1990-03-26 | 1990-03-26 | Sealed lead-acid battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03274660A JPH03274660A (en) | 1991-12-05 |
| JP2890634B2 true JP2890634B2 (en) | 1999-05-17 |
Family
ID=13592786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2076008A Expired - Lifetime JP2890634B2 (en) | 1990-03-26 | 1990-03-26 | Sealed lead-acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2890634B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4876302B2 (en) * | 2000-08-28 | 2012-02-15 | 株式会社Ｇｓユアサ | Sealed lead acid battery |
| JP5581934B2 (en) * | 2010-09-22 | 2014-09-03 | 日本ケミコン株式会社 | Electrolytic capacitor |
-
1990
- 1990-03-26 JP JP2076008A patent/JP2890634B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03274660A (en) | 1991-12-05 |
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