JP3158433B2 - Sealed lead-acid battery - Google Patents
Sealed lead-acid batteryInfo
- Publication number
- JP3158433B2 JP3158433B2 JP33807690A JP33807690A JP3158433B2 JP 3158433 B2 JP3158433 B2 JP 3158433B2 JP 33807690 A JP33807690 A JP 33807690A JP 33807690 A JP33807690 A JP 33807690A JP 3158433 B2 JP3158433 B2 JP 3158433B2
- Authority
- JP
- Japan
- Prior art keywords
- antimony
- lead
- acid battery
- bushing
- pole
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/561—Hollow metallic terminals, e.g. terminal bushings
-
- 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)
- Connection Of Batteries Or Terminals (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に関し、特に端子部構造を改
良した密閉形鉛蓄電池に関する。Description: TECHNICAL FIELD The present invention relates to a sealed lead-acid battery, and more particularly to a sealed lead-acid battery having an improved terminal structure.
従来の技術 密閉形鉛蓄電池は近年コンピュータなどをバックアッ
プする無停電電源用として需要が急増している。この密
閉形鉛蓄電池の使用状態としては、通常定電圧充電で数
年間使用される。定電圧充電状態では蓄電池の自己放電
で消費される電気量より過剰の充電電気量が供給され
る。この過剰の電気量で正極より発生する酸素ガスを負
極の金属鉛と反応させて水に戻すサイクルを作ることに
よって蓄電池の密閉化を達成しており、酸素ガスの発生
に大きく影響くる格子合金の組成を従来の鉛−アンチモ
ン合金から鉛−カルシウム合金に変えて酸素ガスの発生
を少なくする工夫をしている。その結果電解液中の水分
が減少することがなくなる。2. Description of the Related Art In recent years, demand for sealed lead-acid batteries for uninterruptible power supplies for backing up computers and the like has been rapidly increasing. The sealed lead-acid battery is usually used for several years with constant voltage charging. In the constant voltage charging state, an excessive amount of charged electricity is supplied compared to the amount of electricity consumed by the self-discharge of the storage battery. By creating a cycle in which oxygen gas generated from the positive electrode with this excess amount of electricity is reacted with metallic lead on the negative electrode and returned to water, the battery is sealed, and a lattice alloy that greatly affects the generation of oxygen gas is achieved. The composition is changed from a conventional lead-antimony alloy to a lead-calcium alloy to reduce the generation of oxygen gas. As a result, the water in the electrolyte does not decrease.
また蓄電池の使用、取扱上電池外部に露出している端
子はこの部分で負荷などに連結されるため機械的な強度
を必要とし、どうしてもある程度のアンチモンを添加し
て強度を保つ必要がある。In addition, the terminals exposed to the outside of the battery during use and handling of the storage battery are required to have mechanical strength because they are connected to a load or the like at this portion, and it is necessary to add some antimony to maintain the strength.
よって従来の技術による密閉形鉛蓄電池では蓄電池の
外部ではアンチモンを含んだ鉛を、また蓄電池の内部で
はアンチモンを含まない鉛を使用し、この２つの部品を
繋ぎ合わせていた。Therefore, in the sealed lead-acid battery according to the prior art, lead containing antimony is used outside the storage battery, and lead not containing antimony is used inside the storage battery, and these two parts are connected.
発明が解決しようとする課題 密閉形鉛蓄電池の欠点として電解液を含んだセパレー
タに接している負極の部分では、上述したように正極よ
り発生した酸素ガスと負極金属鉛が反応して硫酸鉛が生
成し、過剰な充電電気量で充電され、もとの金属鉛とな
るサイクルを繰り返す。しかしながらセパレータに接し
ておらず蓄電池内部で酸素ガスに曝されている負極極板
群の棚部，極柱および極柱とブッシングの接合部の表面
部分は酸化腐食を受けるものの、電解液である硫酸の供
給が少ないため腐食生成物となって付着し、徐々にその
量が増加する。Problems to be Solved by the Invention As a disadvantage of the sealed lead-acid battery, in the part of the negative electrode in contact with the separator containing the electrolytic solution, as described above, oxygen gas generated from the positive electrode reacts with the negative electrode metal lead to form lead sulfate. The cycle of generating, charging with an excess amount of charged electricity, and returning to the original metallic lead is repeated. However, although the surface of the shelf, the pole, and the joint between the pole and the bushing of the negative electrode plate group that is not in contact with the separator and exposed to oxygen gas inside the storage battery is subject to oxidative corrosion, the sulfuric acid as the electrolyte is Is supplied as a corrosion product due to a small supply of, and the amount gradually increases.
さらに従来の密閉形鉛蓄電池ではアンチモンを含むブ
ッシング部とアンチモンを含まない極柱を溶融接合する
必要があり、これら２つの部品の溶融比率によって、極
柱の溶融接合部のアンチモン含有量が低下、変動するこ
とになる。アンチモン含有量が約２％以下になってくる
と急激に凝固後の結晶粒が粗大化し、極端なものは溶融
接合部の下部から表面にまで達するようになる。また極
柱の組成を変えてアンチモンを添加したものを使用した
場合には蓄電池内部にアンチモン含有部とアンチモンを
含まない部分が共存することになり、それらの接点で局
部電池ができる。Furthermore, in the conventional sealed lead-acid battery, it is necessary to melt-bond the bushing portion containing antimony and the pole that does not contain antimony, and the melting ratio of these two parts lowers the antimony content of the fusion-bonded portion of the pole, Will fluctuate. When the antimony content is reduced to about 2% or less, the crystal grains after solidification rapidly become coarse, and extreme ones reach from the lower part of the fusion joint to the surface. When the composition of the poles is changed and antimony is used, an antimony-containing portion and a portion not containing antimony coexist in the storage battery, and a local battery can be formed at those contacts.
以上のような状態で従来の密閉形鉛蓄電池では酸化雰
囲気中に、結晶粒が粗大化したり局部電池を形成するよ
うな構造部分が存在するため、鉛の粒界腐食が起こり易
く、この腐食はひとたび発生すれば溶融接合部の表面に
まで至り漏液、端子部の変色、気密不良などの重大な事
故を引き起こすことが多かった。In the above-described state, in the conventional sealed lead-acid battery, there is a structural part in the oxidizing atmosphere where crystal grains are coarsened or a local battery is formed, so that intergranular corrosion of lead easily occurs. Once generated, they often reached the surface of the fusion joint, causing serious accidents such as liquid leakage, discoloration of the terminal portion, and poor airtightness.
本発明はこのような課題を解決するもので、信頼性を
大幅に向上した密閉形鉛蓄電池を提供することを目的と
する。The present invention solves such a problem, and an object of the present invention is to provide a sealed lead-acid battery with significantly improved reliability.
課題を解決するための手段 この課題を解決するため本発明の密閉形鉛蓄電池は、
アンチモンを含有する鉛製のブッシング上部と、アンチ
モンフリーの鉛製の極柱上部を溶融接合する端子接続方
式において、端子の溶融接合部のアンチモン含有量を２
〜20％に規制するものである。Means for Solving the Problems To solve this problem, the sealed lead-acid battery of the present invention is:
In a terminal connection method in which the upper portion of a lead bushing made of antimony and the upper portion of an antimony-free lead pole are melted and joined, the antimony content of the fused joint portion of the terminal is 2
It is regulated to ~ 20%.
作用 この構成により本発明の密閉形鉛蓄電池は、硫酸が存
在せず、アンチモンを含まない極柱上端部においてアン
チモンを含有するブッシング上部を溶融接合することに
なり、局部電池構成による腐食を起こすこともなく、か
つ端子の溶融接合部のアンチモン含有量を２〜20％に規
制し、結晶粒の大きさを微細化することにより耐食性を
向上させることとなる。Action With this configuration, the sealed lead-acid battery of the present invention does not contain sulfuric acid and melt-bonds the upper part of the antimony-containing bushing at the upper end of the pole that does not contain antimony, causing corrosion due to the local battery configuration. In addition, the corrosion resistance is improved by regulating the antimony content of the fused joint portion of the terminal to 2 to 20% and reducing the size of crystal grains.
実施例 以下本発明の一実施例の密閉形鉛蓄電池について図面
を基にして説明する。Embodiment Hereinafter, a sealed lead-acid battery according to one embodiment of the present invention will be described with reference to the drawings.
第１図は実施例の密閉形鉛蓄電池端子近傍の要部の構
造を示す断面図である。この密閉形鉛蓄電池はポリプロ
ピレン樹脂成型電槽１に負極板、ガラス繊維マット、正
極板よりなる極板群３が挿入されている。極板群３はそ
の上部の棚部５でアンチモンを含まない極柱４と溶融接
合されている。極板群３を電槽１に挿入した後、その上
部にポリプロピレン樹脂製の蓋２を載せる。この蓋２に
はアンチモン３％を含む鉛合金よりなるブッシング６が
インサート成型により一体化されている。蓋２と電槽１
とは熱溶着によってシールされこのとき極柱４の先端は
ブッシング６の開口部に位置するようになる。FIG. 1 is a cross-sectional view showing the structure of a main part near a sealed lead-acid battery terminal of an embodiment. In this sealed lead-acid battery, an electrode group 3 composed of a negative electrode plate, a glass fiber mat, and a positive electrode plate is inserted into a polypropylene resin molded battery case 1. The electrode group 3 is fusion-bonded to the pole 4 not containing antimony at the upper shelf 5. After inserting the electrode plate group 3 into the battery case 1, the lid 2 made of polypropylene resin is placed on the upper part thereof. A bushing 6 made of a lead alloy containing 3% of antimony is integrated with the lid 2 by insert molding. Lid 2 and battery case 1
Is sealed by heat welding, and at this time, the tip of the pole 4 is located at the opening of the bushing 6.
その後極柱４の上部とブッシング６の上部を溶融接合
し、溶融接合部８とする。この溶融接合部８のアンチモ
ンの含有量は極柱４とブッシング６の溶融量によって決
まる。７は端子である。Then, the upper part of the pole 4 and the upper part of the bushing 6 are fusion-bonded to form a fusion-bonded portion 8. The content of antimony in the fusion joint 8 is determined by the melting amount of the pole 4 and the bushing 6. 7 is a terminal.
第２図，第３図に別の実施例の溶融接合部のアンチモ
ンの含有量を規制する場合を示した。いずれの場合も端
子部の溶融接合状態は第１図のようになる。FIGS. 2 and 3 show another embodiment in which the content of antimony in the fusion-bonded portion is regulated. In either case, the fused state of the terminal portion is as shown in FIG.
第２図は極柱４の上面にブッシング６と同組成の足し
鉛９を載置し溶融接合し、溶融接合部のアンチモンの含
有量をブッシング部と近い量に規制する場合を示した。FIG. 2 shows a case where an additional lead 9 having the same composition as the bushing 6 is placed on the upper surface of the pole 4 and melt-bonded, and the content of antimony in the melt-bonded portion is regulated to an amount close to that of the bushing portion.
第３図は極柱４の上面高さよりブッシング６の上面高
さを高くし、ブッシング６の上方の一定部分を溶しこみ
極柱４上部の一定部分と溶融接合してアンチモンの含有
量を規制する場合を示した。FIG. 3 shows that the upper surface height of the bushing 6 is made higher than the upper surface height of the pole 4, and a certain portion above the bushing 6 is melted and fused with a certain portion above the pole 4 to regulate the content of antimony. Case shown.
本実施例の効果を明らかにするため溶融接合部のアン
チモン量を１〜５％まで変化させて比較試験を行なっ
た。試験は負極端子溶融接合部の亀裂の発生程度を比較
する方法で行なった。試験条件は雰囲気温度40℃で、１
セルあたり2.3Vの定電圧充電を行ない、この状態を1.5
年間継続した。その後負極端子部を取り出しその断面を
観察し亀裂発生の程度をみた。In order to clarify the effect of the present embodiment, a comparative test was performed by changing the amount of antimony in the fusion joint from 1 to 5%. The test was performed by a method for comparing the degree of crack generation at the negative electrode terminal fusion joint. The test conditions were at an ambient temperature of 40 ° C and 1
A constant voltage charge of 2.3 V per cell is performed, and this state is changed to 1.5
Continued for a year. Thereafter, the negative electrode terminal portion was taken out and its cross section was observed to determine the degree of crack generation.
比較試験の結果を表に示した。 The results of the comparative test are shown in the table.
表からわかるとおり、アンチモン含有量が増えるに従
い粒界腐食による亀裂の発生の程度は少なくなる。従来
の密閉形鉛蓄電池のアンチモン含有量に相当する1.5％
あるいはそれ以下の場合、亀裂の発生程度は大きく、結
晶粒が溶融接合部の表面にまで単一の結晶粒として成長
しているのが観察された。またアンチモンの含有量が少
なくなるにつれ亀裂の発生が急増することから、一旦こ
のような粒界腐食が始まると腐食が急激に進行すること
がわかる。 As can be seen from the table, the degree of cracking due to intergranular corrosion decreases as the antimony content increases. 1.5%, equivalent to the antimony content of conventional sealed lead-acid batteries
In the case of less than that, the degree of crack generation was large, and it was observed that the crystal grains were grown as single crystal grains to the surface of the fusion joint. Further, since the occurrence of cracks increases rapidly as the content of antimony decreases, it can be seen that once such intergranular corrosion starts, the corrosion progresses rapidly.
以上の結果溶融接合部のアンチモン含有量を２〜20％
に規制することが望ましい。アンチモン含有量が20％を
超えると溶接性がわるくなり好ましくない。As a result of the above, the antimony content of the fusion joint was 2 to 20%.
It is desirable to regulate to. If the antimony content exceeds 20%, the weldability deteriorates, which is not preferable.
発明の効果 以上の実施例の説明で明らかなように、本発明による
密閉形鉛蓄電池によれば端子の溶融接合部のアンチモン
の含有量を２〜20％に規制することによりこの部分の結
晶粒の大きさを微細な状態にコントロールすることがで
き、その結果として密閉形鉛蓄電池の信頼性を大幅に向
上できる。As is clear from the above description of the embodiment, according to the sealed lead-acid battery according to the present invention, by controlling the content of antimony in the fused joint of the terminal to 2 to 20%, the crystal grain in this portion is controlled. Can be controlled to a fine state, and as a result, the reliability of the sealed lead-acid battery can be greatly improved.
第１図は本発明の一実施例の密閉形鉛蓄電池の負極端子
部近傍の要部の縦断面図、第２図，第３図は本発明の別
の実施例の密閉形鉛蓄電池の負極端部部近傍の要部の溶
融接合前の縦断面図である。 ４……極柱、６……ブッシング、７……端子、８……溶
融接合部。FIG. 1 is a longitudinal sectional view of a main part near a negative electrode terminal portion of a sealed lead-acid battery according to one embodiment of the present invention, and FIGS. 2 and 3 are negative sectional views of a sealed lead-acid battery according to another embodiment of the present invention. It is a longitudinal cross-sectional view before the fusion bonding of the principal part near the extreme part. 4 ... Pole pole, 6 ... Bushing, 7 ... Terminal, 8 ... Fused joint.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大沢 道雄 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63−175335（ＪＰ，Ａ) 特開 昭60−257064（ＪＰ，Ａ) 特開 平３−263756（ＪＰ，Ａ) 特開 昭52−110439（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 2/20 - 2/34 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Michio Osawa, Inventor 1006, Oaza Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-63-175335 (JP, A) 257064 (JP, A) JP-A-3-263756 (JP, A) JP-A-52-110439 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01M 2/20-2 / 34
Claims (3)
部とアンチモンを含有しない鉛製の極柱上部を溶融接合
した端子を有し、その溶融接合部にアンチモンを２〜20
％含有した密閉形鉛蓄電池。An upper part of an antimony-containing lead bushing and an upper part of a lead pole not containing antimony are fusion-bonded to each other.
% Lead-acid battery.
面高さよりアンチモンを含有しない鉛製の極柱上面高さ
を低くし、前記ブッシングと同一の組成をもつ鉛部品を
溶融接合部の上に載置した請求項１記載の密閉形鉛蓄電
池。2. A lead component having the same composition as the bushing is mounted on the fusion joint by lowering the top height of the lead pole made of antimony-free than the upper surface of the bushing made of antimony. The sealed lead-acid battery according to claim 1, wherein:
面高さよりアンチモンを含有しない極柱上面高さを低く
し、前記ブッシングの上方の一定部分と極柱上部の一定
部分とが夫々溶融され、前記溶接部の間に溶融接合部を
介在させた請求項１記載の密閉形鉛蓄電池。3. The method of claim 1, wherein the upper surface of the pole that does not contain antimony is made lower than the upper surface of the bushing made of antimony, so that a certain portion above the bushing and a certain portion above the pole are melted, respectively. 2. The sealed lead-acid battery according to claim 1, wherein a fusion joint is interposed between the welds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33807690A JP3158433B2 (en) | 1990-11-30 | 1990-11-30 | Sealed lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33807690A JP3158433B2 (en) | 1990-11-30 | 1990-11-30 | Sealed lead-acid battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04206459A JPH04206459A (en) | 1992-07-28 |
| JP3158433B2 true JP3158433B2 (en) | 2001-04-23 |
Family
ID=18314681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33807690A Expired - Lifetime JP3158433B2 (en) | 1990-11-30 | 1990-11-30 | Sealed lead-acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3158433B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3601248B2 (en) * | 1997-04-22 | 2004-12-15 | 松下電器産業株式会社 | Sealed lead-acid battery and manufacturing method thereof |
| JP4599638B2 (en) * | 1999-10-26 | 2010-12-15 | 株式会社Ｇｓユアサ | Lead cell battery connection method |
| US8701743B2 (en) | 2004-01-02 | 2014-04-22 | Water Gremlin Company | Battery parts and associated systems and methods |
| PL2425478T3 (en) | 2009-04-30 | 2019-04-30 | Water Gremlin Co | Battery parts having retaining and sealing features and associated methods of manufacture and use |
| US9748551B2 (en) | 2011-06-29 | 2017-08-29 | Water Gremlin Company | Battery parts having retaining and sealing features and associated methods of manufacture and use |
| US9954214B2 (en) | 2013-03-15 | 2018-04-24 | Water Gremlin Company | Systems and methods for manufacturing battery parts |
| MX2021006454A (en) | 2018-12-07 | 2021-07-02 | Water Gremlin Co | Battery parts having solventless acid barriers and associated systems and methods. |
-
1990
- 1990-11-30 JP JP33807690A patent/JP3158433B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04206459A (en) | 1992-07-28 |
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