JPH07169467A - Lead-acid battery - Google Patents
Lead-acid batteryInfo
- Publication number
- JPH07169467A JPH07169467A JP5313146A JP31314693A JPH07169467A JP H07169467 A JPH07169467 A JP H07169467A JP 5313146 A JP5313146 A JP 5313146A JP 31314693 A JP31314693 A JP 31314693A JP H07169467 A JPH07169467 A JP H07169467A
- Authority
- JP
- Japan
- Prior art keywords
- strap
- alloy
- lead
- crystal grains
- weight
- 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.)
- Granted
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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鉛蓄電池の、とくにそ
の格子体の耳部を接続する溶接棚（ストラップ）の耐食
性の改善に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in the corrosion resistance of a lead storage battery, in particular, a welding shelf (strap) for connecting the ears of its lattice.
【０００２】[0002]
【従来の技術】近年、自動車用鉛蓄電池の正、負極の格
子体には、電解液の減少を抑制することができ、メンテ
ナンスフリー化に有効である鉛−カルシウム−錫（Ｐｂ
−Ｃａ−Ｓｎ）合金が広く用いられている。そして、こ
のＰｂ−Ｃａ−Ｓｎ合金を格子体に用いることにより、
電池としての自己放電を防止して保存特性を向上させる
とともに、充電時における負極からの水素ガスの発生を
抑制している。2. Description of the Related Art In recent years, lead-calcium-tin (Pb), which is effective for maintenance-free, can suppress the decrease of electrolyte in the positive and negative grids of lead acid batteries for automobiles.
-Ca-Sn) alloys are widely used. And by using this Pb-Ca-Sn alloy for the lattice,
The self-discharge of the battery is prevented, the storage characteristics are improved, and the generation of hydrogen gas from the negative electrode during charging is suppressed.
【０００３】また、格子体の耳部を接続するストラップ
には、特公平３−２５８９５号公報に開示されているよ
うに、アンチモン（Ｓｂ）を含まない純鉛または鉛−錫
（Ｐｂ−Ｓｎ）系合金が用いられている。Further, as disclosed in Japanese Patent Publication No. 3-25895, the strap connecting the ears of the lattice is pure lead or lead-tin (Pb-Sn) containing no antimony (Sb). A system alloy is used.
【０００４】そして、Ｐｂ−Ｃａ−Ｓｎ合金からなる格
子体の耳部と、Ｐｂ−Ｓｎ系合金からなるストラップ形
成用足し鉛とをガスバーナーで溶接してストラップを形
成している。Then, the ear portion of the lattice body made of the Pb-Ca-Sn alloy and the lead for strap formation made of the Pb-Sn alloy are welded with a gas burner to form the strap.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、ストラ
ップ形成用足し鉛にＰｂ−Ｓｎ系合金を用いた場合に
は、Ｐｂ−Ｃａ−Ｓｎ合金とＰｂ−Ｓｎ系合金との溶融
状態から晶出した結晶粒が粗大になっていた。However, when a Pb-Sn alloy is used as the additional lead for forming the strap, the crystal grains crystallized from the molten state of the Pb-Ca-Sn alloy and the Pb-Sn alloy. Was getting coarse.
【０００６】このため、ストラップ内の結晶粒界に電解
液と空気中の酸素が浸透することが多く、これらの反応
によって結晶粒界には硫酸鉛（ＰｂＳＯ4）が多量に生
成していた。さらに、ストラップ内部でＰｂＳＯ4は結
晶粒界に沿ってくさび形に、体積膨張をともないながら
成長するため、このときの応力によってストラップ部分
に亀裂や割れが生じていた。Therefore, the electrolytic solution and oxygen in the air often permeate into the crystal grain boundaries in the strap, and a large amount of lead sulfate (PbSO 4 ) is produced at the crystal grain boundaries by these reactions. Furthermore, since PbSO 4 grows in a wedge shape along the crystal grain boundaries inside the strap while undergoing volume expansion, the stress at this time causes cracks and fractures in the strap portion.
【０００７】また、格子体の耳部を溶接する際、Ｐｂ−
Ｃａ−Ｓｎ合金中のＣａが酸化されることにより、格子
体の耳部とストラップとの溶接性が低下していた。When welding the ears of the lattice, Pb-
Due to the oxidation of Ca in the Ca-Sn alloy, the weldability between the ear portion of the lattice and the strap was deteriorated.
【０００８】本発明は、このような課題を解決するもの
であり、Ｐｂ−Ｃａ−Ｓｎ合金からなる格子体の耳部を
Ｐｂ−Ｓｎ系合金で溶接して形成したストラップにおい
て、その結晶粒界での腐食の進行を防いでストラップ部
分に亀裂や割れが発生することを防止するとともに、格
子体耳部とストラップとの溶接強度を高めることができ
る鉛蓄電池を提供する。The present invention is intended to solve such a problem, and a crystal grain boundary of a strap formed by welding the ears of a lattice made of a Pb-Ca-Sn alloy with a Pb-Sn alloy. (EN) Provided is a lead acid battery capable of preventing the progress of corrosion in the steel sheet, preventing cracks and cracks in the strap portion, and enhancing the welding strength between the lattice ear portion and the strap portion.
【０００９】[0009]
【課題を解決するための手段】上記の課題を解決するた
めに、本発明の鉛蓄電池は、カルシウム（Ｃａ）を０．
０５〜０．１重量％、錫（Ｓｎ）を０．２〜２．０重量
％含み、残部が鉛（Ｐｂ）である鉛−カルシウム−錫
（Ｐｂ−Ｃａ−Ｓｎ）合金からなる格子体の耳部を、錫
（Ｓｎ）を０．５〜２．５重量％、アルミニウム（Ａ
ｌ）を０．００５〜０．０５重量％含み、残部が鉛（Ｐ
ｂ）である鉛−錫−アルミニウム（Ｐｂ−Ｓｎ−Ａｌ）
合金で形成したストラップにより接続したものである。In order to solve the above-mentioned problems, the lead-acid battery of the present invention uses calcium (Ca) of 0.
0 to 0.1% by weight, 0.2 to 2.0% by weight of tin (Sn), and the balance being lead (Pb) of a lead-calcium-tin (Pb-Ca-Sn) alloy lattice. 0.5 to 2.5% by weight of tin (Sn) and aluminum (A
1) in an amount of 0.005 to 0.05% by weight, the balance being lead (P
b) lead-tin-aluminum (Pb-Sn-Al)
It is connected by a strap formed of an alloy.
【００１０】[0010]
【作用】本発明の鉛蓄電池では、ストラップ形成用の鉛
合金にアルミニウム（Ａｌ）を０．００５〜０．０５重
量％含む鉛−錫−アルミニウム（Ｐｂ−Ｓｎ−Ａｌ）合
金を用いている。この合金を用いてＰｂ−Ｃａ−Ｓｎ合
金からなる格子体の耳部を溶接してストラップを形成す
ると、前記Ｐｂ−Ｓｎ−Ａｌ合金とＰｂ−Ｃａ−Ｓｎ合
金との溶融状態から結晶粒が晶出する際、アルミニウム
（Ａｌ）が結晶核に作用して微細な結晶粒が成長する。In the lead acid battery of the present invention, the lead alloy for forming the strap is a lead-tin-aluminum (Pb-Sn-Al) alloy containing 0.005 to 0.05% by weight of aluminum (Al). When the ears of a lattice body made of a Pb-Ca-Sn alloy are welded using this alloy to form a strap, crystal grains are crystallized from the molten state of the Pb-Sn-Al alloy and the Pb-Ca-Sn alloy. When it comes out, aluminum (Al) acts on the crystal nuclei to grow fine crystal grains.
【００１１】このため、ストラップを構成する結晶粒は
細かく緻密になり、ストラップの結晶粒界に電解液や空
気中の酸素が浸透しにくくなって、前記結晶粒界におけ
るＰｂＳＯ4の生成を抑制することができる。For this reason, the crystal grains forming the strap are fine and dense, and it becomes difficult for oxygen in the electrolytic solution or air to permeate into the crystal grain boundaries of the strap, thereby suppressing the generation of PbSO 4 at the crystal grain boundaries. be able to.
【００１２】したがって、ストラップ内部でＰｂＳＯ4
が生成する時に発生する応力を極めて小さくすることが
でき、ストラップ部分に前記応力に起因した亀裂や割れ
が発生することを防止できる。Therefore, the PbSO 4 inside the strap is
It is possible to make extremely small the stress generated when is generated, and it is possible to prevent the occurrence of cracks or breaks in the strap portion due to the stress.
【００１３】また、アルミニウム（Ａｌ）はカルシウム
（Ｃａ）より酸化されやすく、格子体の耳部のＰｂ−Ｃ
ａ−Ｓｎ合金とストラップ形成用足し鉛のＰｂ−Ｓｎ−
Ａｌ合金との溶接時には、結果的にＣａの酸化を抑制す
ることができ、格子体耳部とストラップとの境界部分に
おける腐食の進行を防止して格子体耳部とストラップと
の溶接強度を高めることができる。Aluminum (Al) is more easily oxidized than calcium (Ca), and Pb-C in the ear of the lattice is
Pb-Sn- of a-Sn alloy and additional lead for strap formation
At the time of welding with an Al alloy, it is possible to suppress the oxidation of Ca as a result, prevent the progress of corrosion at the boundary between the lattice ear and the strap, and enhance the welding strength between the lattice ear and the strap. be able to.
【００１４】[0014]
【実施例】以下、本発明の実施例を説明する。EXAMPLES Examples of the present invention will be described below.
【００１５】Ｃａを０．０８重量％とＳｎを０．５重量
％含み、残部がＰｂからなるＰｂ−Ｃａ−Ｓｎ合金を用
いて、所定のエキスパンド格子体を作製した。ついで、
前記格子体に活物質を充填した負極板５枚の耳部に、Ｓ
ｎとＡｌの含有量を（表１）のように変化させたＰｂ−
Ｓｎ−Ａｌ合金からなるストラップ形成用足し鉛を加
え、これらをガスバーナで溶融してストラップ（溶接
棚）を形成した。また、これら負極板５枚と、アンチモ
ン（Ｓｂ）を２．５重量％含み、残部がＰｂであるＰｂ
−Ｓｂ合金を格子体とした正極板４枚とを用いて極板群
を作製した。A Pb-Ca-Sn alloy containing 0.08% by weight of Ca and 0.5% by weight of Sn and the balance of Pb was used to produce a predetermined expanded lattice. Then,
On the ears of the five negative plates in which the grid body is filled with the active material, S
Pb-with the contents of n and Al changed as shown in (Table 1)
A strap forming lead made of Sn-Al alloy was added, and these were melted by a gas burner to form a strap (welding shelf). Further, Pb containing 5 of these negative plates and 2.5% by weight of antimony (Sb) and the balance being Pb.
An electrode plate group was produced using four positive electrode plates having a —Sb alloy as a lattice.
【００１６】そして、電槽内に前記極板群を６個収納
し、電解液をストラップの下面より２ｍｍ下まで注入し
て公称仕様１２Ｖ４８Ａｈの鉛蓄電池を作製した。Then, six of the above electrode plates were housed in a battery case, and an electrolytic solution was injected up to 2 mm below the lower surface of the strap to prepare a lead storage battery having a nominal specification of 12V48Ah.
【００１７】ついで、これらの鉛蓄電池を用い、７５℃
において１３．８Ｖの定電圧で連続充電を行い、８週間
後負極板の耳部を接続したストラップの腐食状態を調べ
た。Then, using these lead-acid batteries at 75 ° C.
Was continuously charged at a constant voltage of 13.8 V, and after 8 weeks, the state of corrosion of the strap connected to the ears of the negative electrode plate was examined.
【００１８】ストラップの腐食状態の評価は、ストラッ
プにおける亀裂や割れの発生状態を調べるとともに、ス
トラップと負極板耳部とを互いに引っ張ってストラップ
から極板耳部がはずれるか否かを１５０枚の負極板それ
ぞれに対して調べて行った。この結果を（表１）に示
す。The corrosion state of the strap is evaluated by checking the occurrence state of cracks and cracks in the strap, and by pulling the strap and the negative electrode plate ear portion to each other to determine whether or not the electrode plate ear portion is disengaged from the strap. Each plate was examined and examined. The results are shown in (Table 1).
【００１９】[0019]
【表１】 [Table 1]
【００２０】（表１）に示したように、Ｓｎを０．５０
〜２．５０重量％、Ａｌを０．００５〜０．０５重量％
含むＰｂ−Ｓｎ−Ａｌ合金からなる足し鉛を加えてスト
ラップを形成した場合には連続充電後においても極板耳
部とストラップとの溶接状態を良好に保つことができる
とともに、ストラップ部分に亀裂や割れが発生すること
を防止することができた。As shown in (Table 1), Sn is set to 0.50.
~ 2.50% by weight, Al 0.005-0.05% by weight
When a strap is formed by adding additional lead made of a Pb-Sn-Al alloy containing the same, it is possible to maintain a good welding state between the electrode plate ear portion and the strap even after continuous charging, and to prevent cracks or It was possible to prevent the occurrence of cracks.
【００２１】[0021]
【発明の効果】以上のように、本発明の鉛蓄電池は、カ
ルシウム（Ｃａ）を０．０５〜０．１重量％、錫（Ｓ
ｎ）を０．２〜２．０重量％含み、残部が鉛（Ｐｂ）で
ある鉛−カルシウム−錫（Ｐｂ−Ｃａ−Ｓｎ）合金から
なる格子体の耳部を、錫（Ｓｎ）を０．５〜２．５重量
％、アルミニウム（Ａｌ）を０．００５〜０．０５重量
％含み、残部が鉛（Ｐｂ）である鉛−錫−アルミニウム
（Ｐｂ−Ｓｎ−Ａｌ）合金で接続してストラップを形成
するものであり、前記Ｐｂ−Ｃａ−Ｓｎ合金とＰｂ−Ｓ
ｎ−Ａｌ合金とを溶接してストラップを形成すると結晶
粒が晶出する際、アルミニウム（Ａｌ）が結晶核に作用
して微細な結晶粒が成長する。INDUSTRIAL APPLICABILITY As described above, the lead-acid battery of the present invention contains 0.05 to 0.1% by weight of calcium (Ca) and tin (S).
n) in an amount of 0.2 to 2.0% by weight, and the balance being lead (Pb) and made of lead-calcium-tin (Pb-Ca-Sn) alloy. 0.5 to 2.5 wt%, 0.005 to 0.05 wt% aluminum (Al), and the balance is lead (Pb) connected by a lead-tin-aluminum (Pb-Sn-Al) alloy A strap is formed, and the Pb-Ca-Sn alloy and Pb-S are formed.
When a strap is formed by welding with an n-Al alloy, when crystal grains crystallize out, aluminum (Al) acts on the crystal nuclei to grow fine crystal grains.
【００２２】したがって、ストラップを構成する結晶粒
は細かく緻密になり、結晶粒界における腐食の進行を防
いでストラップ部分に亀裂や割れが発生することを防止
することができるとともに、格子体耳部とストラップと
の溶接強度を高めることができる。Therefore, the crystal grains forming the strap are fine and dense, and it is possible to prevent the progress of corrosion at the crystal grain boundaries to prevent cracks and fractures from occurring in the strap portion, and to prevent the lattice ear portion from being formed. Welding strength with the strap can be increased.
フロントページの続き (72)発明者 安田 博 大阪府門真市大字門真1006番地 松下電器 産業株式会社内Front page continuation (72) Inventor Hiroshi Yasuda 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (1)
重量％、錫（Ｓｎ）を０．２〜２．０重量％含み、残部
が鉛（Ｐｂ）である鉛−カルシウム−錫（Ｐｂ−Ｃａ−
Ｓｎ）合金からなる格子体の耳部を、錫（Ｓｎ）を０．
５〜２．５重量％、アルミニウム（Ａｌ）を０．００５
〜０．０５重量％含み、残部が鉛（Ｐｂ）である鉛−錫
−アルミニウム（Ｐｂ−Ｓｎ−Ａｌ）合金で形成したス
トラップにより接続した鉛蓄電池。1. Calcium (Ca) 0.05 to 0.1
% By weight, 0.2 to 2.0% by weight of tin (Sn), and the balance being lead (Pb). Lead-calcium-tin (Pb-Ca-).
The ears of the lattice made of Sn) alloy are filled with tin (Sn).
5 to 2.5% by weight, aluminum (Al) 0.005
A lead storage battery connected by a strap formed of a lead-tin-aluminum (Pb-Sn-Al) alloy, which contains .about.0.05% by weight and the balance is lead (Pb).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31314693A JP3334299B2 (en) | 1993-12-14 | 1993-12-14 | Lead storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31314693A JP3334299B2 (en) | 1993-12-14 | 1993-12-14 | Lead storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07169467A true JPH07169467A (en) | 1995-07-04 |
| JP3334299B2 JP3334299B2 (en) | 2002-10-15 |
Family
ID=18037663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31314693A Expired - Fee Related JP3334299B2 (en) | 1993-12-14 | 1993-12-14 | Lead storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3334299B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002175798A (en) * | 2000-12-08 | 2002-06-21 | Japan Storage Battery Co Ltd | Sealed lead-acid battery |
-
1993
- 1993-12-14 JP JP31314693A patent/JP3334299B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002175798A (en) * | 2000-12-08 | 2002-06-21 | Japan Storage Battery Co Ltd | Sealed lead-acid battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3334299B2 (en) | 2002-10-15 |
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