JPH0334191B2 - - Google Patents
Info
- Publication number
- JPH0334191B2 JPH0334191B2 JP59114073A JP11407384A JPH0334191B2 JP H0334191 B2 JPH0334191 B2 JP H0334191B2 JP 59114073 A JP59114073 A JP 59114073A JP 11407384 A JP11407384 A JP 11407384A JP H0334191 B2 JPH0334191 B2 JP H0334191B2
- Authority
- JP
- Japan
- Prior art keywords
- pole
- lead
- electrolyte
- corrosion
- coating
- 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
- H01M50/571—Methods or arrangements for affording protection against corrosion; Selection of materials therefor
-
- 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】
〔発明の分野〕
鉛蓄電池の極柱に関し、さらに詳しくは極柱表
面に純鉛の被覆を施すことにより極柱の耐蝕性を
改善し、極柱、とくに正極柱の腐食を抑制して信
頼性を向上させた鉛蓄電池用極柱に関するもので
ある。[Detailed Description of the Invention] [Field of the Invention] Regarding the pole pole of a lead-acid battery, more specifically, the corrosion resistance of the pole pole is improved by coating the pole pole surface with pure lead, and the corrosion resistance of the pole pole, especially the positive pole pole is improved. This invention relates to a lead-acid battery pole pole that suppresses corrosion and improves reliability.
第２図は、従来の鉛蓄電池の極柱部の断面図で
ある。図中で１は極柱、２は電槽上蓋、３は極柱
ナツト、４は電極板、５は硫酸電解液、６は電解
液面、７はパツキンを示す。
FIG. 2 is a cross-sectional view of a pole section of a conventional lead-acid battery. In the figure, 1 is a pole pole, 2 is a battery case top cover, 3 is a pole pole nut, 4 is an electrode plate, 5 is a sulfuric acid electrolyte, 6 is an electrolyte surface, and 7 is a packing.
この第２図より明らかなように鉛蓄電池の極柱
部は、極柱１を有し、この極柱は電槽上蓋２を挿
通して電槽外部に突出するともにパツキン７を介
して前記上蓋２にナツト３により取りつけられた
極柱封口部構造を有している。また前記極柱１の
他の先端部は電極板４に接続しており、この電極
板４は電解液５中に浸漬されている。 As is clear from FIG. 2, the pole part of the lead-acid battery has a pole pole 1, which passes through the battery case top cover 2 and protrudes to the outside of the battery case, and passes through the gasket 7 to the top cover. 2 has a pillar sealing structure attached to it with a nut 3. Further, the other tip of the pole column 1 is connected to an electrode plate 4, and this electrode plate 4 is immersed in an electrolytic solution 5.
このような極柱１は前記電極板４から電気化学
反応によつて生じる電気エネルギを受け取り、こ
れを外部負荷へ供給する導電体の役割を果たして
おり、電極板４と異なり極柱１自身は全く化学変
化を受けないことが望ましい。 Such a pole post 1 plays the role of a conductor that receives electrical energy generated by an electrochemical reaction from the electrode plate 4 and supplies it to an external load, and unlike the electrode plate 4, the pole post 1 itself is completely It is desirable not to undergo chemical changes.
しかしながら第２図に示したような従来の鉛蓄
電池においては、おもに電解液ミストの発生によ
り極柱１と電槽上蓋２との間の隙間よりなる極柱
封口部に間欠的に電解液の供給が行われ、そこに
電解液の滞留が生じる。このような条件下では、
極柱封口部で容易に極柱材料である鉛−アンチモ
ン合金の電気化学酸化、すなわち腐食が発生し、
極柱の有効断面積を減少させるとともに、腐食生
成物（主にPbSO4とα−PbO2）が極柱の外方向
に突出する。このため従来の鉛蓄電池では、極柱
封口部において腐食が原因による極柱の膨張が起
こり、圧力が上昇し、電槽上蓋２に割れが発生す
るという欠点があつた。 However, in the conventional lead-acid battery shown in Fig. 2, electrolyte is intermittently supplied to the pole pillar sealing part, which is the gap between the pole pole 1 and the battery case top cover 2, mainly due to the generation of electrolyte mist. is carried out, and the electrolyte stagnates there. Under such conditions,
Electrochemical oxidation, or corrosion, of the lead-antimony alloy, which is the material of the pole, easily occurs at the pole pillar sealing part.
The effective cross-sectional area of the pole column is reduced, and corrosion products (mainly PbSO 4 and α-PbO 2 ) protrude outward from the pole column. For this reason, conventional lead-acid batteries had the drawback that expansion of the pole column due to corrosion occurred at the pole column sealing portion, pressure increased, and cracks occurred in the battery case top 2.
また同時に、腐食の発生により極柱封口部にお
ける極柱１の抵抗が大きくなり、はなはだしい場
合は、放電時に極柱が熱により溶断し、その結果
電池を爆発させたり、負荷への電力供給を遮断す
るという欠点もあつた。 At the same time, due to the occurrence of corrosion, the resistance of the pole pole 1 at the pole pole sealing part increases, and in extreme cases, the pole pole may melt due to heat during discharge, causing the battery to explode or cutting off the power supply to the load. There was also the drawback of doing so.
このような欠点を除去するために、極柱１と上
蓋２との間の隙間をなくし、極柱封口部への電解
液５の侵入を防ぐことにより、腐食を防止する試
みが種々なされている。しかしながら、電解液５
の侵入を完全に防止することは不可能であり、良
好に腐食を防止できるまでには至つていないのが
現状である。 In order to eliminate such drawbacks, various attempts have been made to prevent corrosion by eliminating the gap between the pole pole 1 and the top cover 2 and preventing the electrolyte 5 from entering the pole pole sealing part. . However, electrolyte 5
It is impossible to completely prevent the intrusion of corrosion, and at present we have not yet reached the point where corrosion can be effectively prevented.
本発明は上述の点に鑑みてなされたものであ
り、従来の極柱材料の有する優れた鋳造性および
機械的強度を劣化せしめることなく、良好な耐蝕
性、特に極柱封口部の耐蝕性の良好な鉛蓄電池用
極柱を提供することを目的とするものである。
The present invention has been made in view of the above points, and provides good corrosion resistance, especially corrosion resistance of the pole pillar sealing part, without deteriorating the excellent castability and mechanical strength of conventional pole pole materials. The purpose of this invention is to provide a good pole pole for lead-acid batteries.
したがつて本発明による鉛蓄電池用極柱は、鉛
合金製の極柱本体とこの極柱本体面に設けられた
被覆とからなる鉛蓄電池用極柱であつて、前記被
覆は純鉛であることを特徴とするものである。 Therefore, the pole pole for a lead-acid battery according to the present invention is a pole pole for a lead-acid battery, which is composed of a pole pole body made of a lead alloy and a coating provided on the surface of the pole body, and the coating is made of pure lead. It is characterized by this.
本発明による鉛蓄電池用極柱によれば、極柱本
体表面に耐腐食性の優れた純鉛層を設けており、
かつ極柱本体は従来の鉛−アンチモン合金である
ので、極柱の機械的特性および鋳造性を損なうこ
となく耐腐食性を向上せしめることができる。 According to the pole pole for a lead-acid battery according to the present invention, a pure lead layer with excellent corrosion resistance is provided on the pole main body surface,
Moreover, since the pole column body is made of a conventional lead-antimony alloy, corrosion resistance can be improved without impairing the mechanical properties and castability of the pole column.
第１図は本発明の一実施例の断面図であり、従
来より用いられている鉛−５％アンチモン合金製
の鉛蓄電池の極柱表面に純鉛被覆を設けている。
図中、１〜７は第２図に示す部材と同一部材を示
し、８は純鉛被覆を示す。
FIG. 1 is a cross-sectional view of one embodiment of the present invention, in which a pure lead coating is provided on the pole surface of a conventionally used lead-5% antimony alloy lead-acid battery.
In the figure, 1 to 7 indicate the same members as shown in FIG. 2, and 8 indicates a pure lead coating.
この実施例より明らかなように本発明による一
実施例は、従来のものと同様に極柱１を有し、こ
の極柱１は電槽上蓋２を挿通して電槽外部に突出
するともにパツキン７を介して前記上蓋２にナツ
ト３により取りつけられた極柱封口部構造を有し
ている。また前記極柱１の他の先端部は電極板４
に接続しており、この電極板４は電解液５中に浸
漬されている。 As is clear from this embodiment, the embodiment according to the present invention has a pole post 1 similar to the conventional one, and this pole post 1 passes through the battery case top cover 2 and protrudes to the outside of the battery case. It has a pillar sealing structure that is attached to the upper lid 2 with a nut 3 through a hole 7. Further, the other tip of the pole column 1 is an electrode plate 4.
The electrode plate 4 is immersed in an electrolytic solution 5.
本発明においては、このような極柱１は極柱本
体１ａとこの極柱本体１ａの表面に形成された純
鉛被覆８よりなつている。 In the present invention, such a pole post 1 consists of a pole body 1a and a pure lead coating 8 formed on the surface of this pole body 1a.
この純鉛被覆８を施した極柱および種々の濃度
でアンチモンを添加した鉛合金の極柱を29.6％硫
酸電解液（鉛蓄電池に使用される電解液）中に浸
漬した場合のα−PbO2の生成速度との関係を第
３図に示す。この第３図より明らかなように、純
鉛被覆を設けた極柱のα−PbO2の生成速度（グ
ラフにおける符合Ａ）は現在使用されている鉛−
５％アンチモン合金に比較して極めて小さく、ほ
ぼ１／３である。したがつて、従来の鉛−５％ア
ンチモン合金製極柱表面に純鉛の被覆を設けるこ
とにより、電解液が極柱封口部へ侵入した場合に
おいてもα−PbO2の生成が抑制され腐食の極柱
内部への進行および腐食生成物の外部への突出お
防止でき、鉛蓄電池の信頼製を向上させることが
できる。 α-PbO 2 when pole poles coated with pure lead 8 and lead alloy pole poles with various concentrations of antimony are immersed in a 29.6% sulfuric acid electrolyte (an electrolyte used in lead-acid batteries). The relationship between the production rate and the production rate is shown in FIG. As is clear from Fig. 3, the production rate of α-PbO 2 (sign A in the graph) of the pole column coated with pure lead is higher than that of the currently used lead-PbO2.
It is extremely small compared to 5% antimony alloy, approximately 1/3. Therefore, by providing a pure lead coating on the surface of the conventional lead-5% antimony alloy pole pole, even if the electrolyte enters the pole pole sealing part, the formation of α-PbO 2 is suppressed and corrosion is prevented. It is possible to prevent corrosion products from advancing inside the poles and protruding to the outside, thereby improving the reliability of lead-acid batteries.
この純鉛被覆８は従来の鉛蓄電池の極柱に純鉛
の溶融メツキ等を施すことにより実施可能であ
り、簡便で、さらに従来の鉛合金の優れた鋳造性
および機械的強度を確保できる利点がある。 This pure lead coating 8 can be implemented by hot-melting pure lead on the poles of conventional lead-acid batteries, and has the advantage of being simple and ensuring the excellent castability and mechanical strength of conventional lead alloys. There is.
以上説明したように、本発明によれば鉛蓄電池
の極柱表面に従来の鉛−５％アンチモン合金に比
べて腐食しにくい純鉛被覆を設けたため極柱の耐
蝕性が向上し、特に極柱封口部の耐蝕性が改善さ
れることから電池を長期にわたり使用可能にする
などの利点がある。
As explained above, according to the present invention, the corrosion resistance of the pole is improved because the surface of the pole of a lead-acid battery is coated with pure lead, which is less likely to corrode than the conventional lead-5% antimony alloy. Since the corrosion resistance of the sealing part is improved, there are advantages such as allowing the battery to be used for a long period of time.
また本発明においては、純鉛の被覆というきわ
めて簡単な工程の付加によつて鉛蓄電池の信頼性
を高めることが可能となり、工業的な価値におい
ても本発明は優れているということができる。 Furthermore, in the present invention, it is possible to improve the reliability of lead-acid batteries by adding an extremely simple step of coating with pure lead, and it can be said that the present invention is excellent in industrial value as well.
第１図は本発明による鉛蓄電池用極柱の一実施
例の概略図、第２図は従来の鉛蓄電池用極柱の概
略図、第３図は純鉛被覆を施した極柱とアンチモ
ンを種々の濃度で添加した極柱を29.6％硫酸電解
液中に浸漬したときにα−PbO2の生成速度の変
化を示すグラフである。
１…極柱、１ａ…極柱本体、２…電槽上蓋、３
…ナツト、４…電極板、５…電解液、８…純鉛被
覆。
FIG. 1 is a schematic diagram of an embodiment of a pole pole for a lead-acid battery according to the present invention, FIG. 2 is a schematic diagram of a conventional pole pole for a lead-acid battery, and FIG. 3 is a diagram showing a pole pole coated with pure lead and antimony. It is a graph showing changes in the production rate of α-PbO 2 when pole columns added at various concentrations are immersed in a 29.6% sulfuric acid electrolyte. 1...Pole pole, 1a...Pole pole body, 2...Battery case top cover, 3
...nut, 4...electrode plate, 5...electrolyte, 8...pure lead coating.
Claims (1)
設けられた被覆８とからなる鉛蓄電池用極柱であ
つて、前記被覆８は純鉛であることを特徴とする
鉛蓄電池用極柱。1. A pole for a lead-acid battery comprising a pole main body 1a made of a lead alloy and a coating 8 provided on the surface of the pole main body, wherein the coating 8 is made of pure lead. Pillar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59114073A JPS60257065A (en) | 1984-06-04 | 1984-06-04 | Cell post for lead storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59114073A JPS60257065A (en) | 1984-06-04 | 1984-06-04 | Cell post for lead storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60257065A JPS60257065A (en) | 1985-12-18 |
| JPH0334191B2 true JPH0334191B2 (en) | 1991-05-21 |
Family
ID=14628367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59114073A Granted JPS60257065A (en) | 1984-06-04 | 1984-06-04 | Cell post for lead storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60257065A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0641930B2 (en) * | 1985-11-15 | 1994-06-01 | シャープ株式会社 | Method for manufacturing oxygen concentration detecting element |
| JP2932491B2 (en) * | 1989-03-31 | 1999-08-09 | 松下電器産業株式会社 | Lead storage battery |
| JP2932490B2 (en) * | 1989-03-31 | 1999-08-09 | 松下電器産業株式会社 | Lead storage battery |
-
1984
- 1984-06-04 JP JP59114073A patent/JPS60257065A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60257065A (en) | 1985-12-18 |
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