JPH1145698A - Terminal forming method for lead acid battery - Google Patents
Terminal forming method for lead acid batteryInfo
- Publication number
- JPH1145698A JPH1145698A JP9202090A JP20209097A JPH1145698A JP H1145698 A JPH1145698 A JP H1145698A JP 9202090 A JP9202090 A JP 9202090A JP 20209097 A JP20209097 A JP 20209097A JP H1145698 A JPH1145698 A JP H1145698A
- Authority
- JP
- Japan
- Prior art keywords
- bushing
- pole
- lead
- terminal
- gap
- 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
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、鉛蓄電池の端子部
の形成法に関する。本発明により、物理的・化学的特性
に優れた信頼性の高い端子部を形成する。The present invention relates to a method for forming a terminal of a lead storage battery. According to the present invention, a highly reliable terminal portion having excellent physical and chemical characteristics is formed.
【0002】[0002]
【従来の技術】従来、自動車用鉛蓄電池の端子部形成に
は、電槽蓋に埋め込んだ鉛又は鉛合金製のブッシング
に、極板群に接続された極柱を挿通して、当該極柱上端
と前記ブッシングをバーナで溶接する方法(例えば、特
開平3−49152号公報)が採用されている。2. Description of the Related Art Conventionally, to form a terminal portion of a lead-acid battery for an automobile, a pole or column connected to a pole group is inserted through a lead or lead alloy bushing embedded in a battery case cover. A method of welding the upper end and the bushing with a burner (for example, Japanese Patent Application Laid-Open No. 3-49152) is employed.
【0003】図5(a)(b)は、その様子を示した断
面図である。まず、(a)に示すように、電槽蓋3に鉛
又は鉛合金製のブッシング4をインサート成形して埋め
込んでおく。また、極板群を構成する複数枚の極板の耳
部1にキャストオンストラップ(COS)法でストラッ
プ2を形成し、併せてストラップ2に極柱5を一体に設
けておく。そして、極柱5をブッシング4に挿通し、そ
の上端をブッシング先端部8より少し突出させる。次
に、(b)に示すように、溶接時の溶融部分をブッシン
グ先端部8だけに限定するために、冷却水を流している
金型10をブッシング4に装着し、金型10から露出し
ている極柱5の上端とブッシング先端部8にバーナの炎
を近づけて両者を完全に溶融し溶接する。9は形成した
溶接部である。溶接の対象である鉛は融点が326℃と
低いため、溶接部とバーナ炎先端との距離や炎の温度な
どの選定が必要である。また、熱エネルギの集中性の調
整が必要である。鉛のバーナ溶接には、酸素/水素ガス
又は酸素/プロパンガスを用いるのが一般的である。FIGS. 5A and 5B are cross-sectional views showing this state. First, as shown in (a), a bushing 4 made of lead or a lead alloy is inserted into the battery case cover 3 by insert molding. Also, a strap 2 is formed on the ears 1 of a plurality of electrode plates constituting the electrode plate group by a cast-on-strap (COS) method, and an electrode pole 5 is integrally provided on the strap 2. Then, the pole 5 is inserted into the bushing 4, and the upper end thereof is slightly protruded from the bushing tip 8. Next, as shown in (b), in order to limit the molten portion at the time of welding to only the bushing tip 8, a mold 10 in which cooling water is flowing is attached to the bushing 4 and exposed from the mold 10. The flame of the burner is brought close to the upper end of the pole 5 and the bushing tip 8, and both are completely melted and welded. 9 is a formed welded portion. Since the melting point of lead to be welded is as low as 326 ° C., it is necessary to select the distance between the weld and the tip of the burner flame, the temperature of the flame, and the like. Further, it is necessary to adjust the concentration of heat energy. It is common to use oxygen / hydrogen gas or oxygen / propane gas for lead burner welding.
【0004】[0004]
【発明が解決しようとする課題】上記従来の端子形成法
は、極柱とブッシングの溶接部がそれぞれの先端部であ
り、ブッシング内周面と極柱外周面との間には隙間が存
在している。毛細管現象や電池の振動又は転倒などによ
って、電池使用中に前記隙間に入り込んだ電解液は、ブ
ッシングや極柱の腐食を促進する。腐食部分は電気抵抗
が増大するので、大電流放電(自動車のエンジン始動時
等)の際に、その抵抗発熱で腐食部分が溶断してしまう
おそれがある。本発明が解決しようとする課題は、ブッ
シング内周面と極柱外周面との間にできる隙間を排除し
て、電解液が侵入する余地のない端子部を形成すること
である。In the conventional terminal forming method described above, the welded portion between the pole and the bushing is the front end, and a gap exists between the inner peripheral surface of the bushing and the outer peripheral surface of the pole. ing. The electrolyte that has entered the gap during use of the battery due to capillary action, battery vibration or overturning promotes bushing and corrosion of the pole. Since the corroded portion has an increased electric resistance, there is a possibility that the corroded portion may be melted and cut off due to the heat generated by the resistance when a large current is discharged (for example, when starting the engine of an automobile). The problem to be solved by the present invention is to eliminate the gap formed between the inner peripheral surface of the bushing and the outer peripheral surface of the pole, and to form a terminal portion having no room for the electrolyte to enter.
【0005】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明に係る鉛蓄電池の端子形成法は、電槽蓋に埋
め込んだ鉛又は鉛合金製のブッシングに、極板群に接続
された極柱を挿通して、当該極柱上端と前記ブッシング
を溶接する方法を改良する。すなわち、前記方法におい
て、溶接前にブッシング内周面と極柱外周面との間隙に
耐酸性の樹脂を流し込み、当該隙間を樹脂で埋めておく
ことにより、腐食の原因である電解液が侵入する間隙を
なくしておく。In order to solve the above problems, a method for forming a terminal of a lead storage battery according to the present invention comprises connecting a lead or lead alloy bushing embedded in a battery case lid to an electrode plate group. The method of welding the pole pole upper end and the bushing by inserting the pole pole is improved. That is, in the above method, before the welding, the acid-resistant resin is poured into the gap between the inner peripheral surface of the bushing and the outer peripheral surface of the pole, and the gap is filled with the resin, whereby the electrolytic solution causing corrosion enters. Eliminate gaps.
【0006】上記方法において、極柱に、ブッシング下
端面が当接する台座を設けておく構成が好ましい。ブッ
シング内周面と極柱外周面との間隙に耐酸性の樹脂を流
し込むとき、間隙に流し込んだ樹脂が下端から流出する
のを防止して、間隙へ流し込んだ樹脂の充填を確実にす
ることができる。また、耐酸性の樹脂流し込み前に、ブ
ッシング内周面と極柱外周面の少なくとも一方の表面に
樹脂コーティングをしておくと、表面が滑らかになっ
て、耐酸性樹脂の流し込みをしやすくなる。In the above method, it is preferable that the pole is provided with a pedestal with which the lower end surface of the bushing abuts. When pouring the acid-resistant resin into the gap between the inner peripheral surface of the bushing and the outer peripheral surface of the pole, it is necessary to prevent the resin that has flowed into the gap from flowing out from the lower end and ensure that the resin that has flowed into the gap is filled. it can. If at least one of the inner peripheral surface of the bushing and the outer peripheral surface of the pole is coated with a resin before pouring the acid-resistant resin, the surface becomes smooth and the acid-resistant resin can be easily poured.
【0007】[0007]
【発明の実施の形態】発明の実施の形態を図1により説
明する。ポリプリピレン製の電槽蓋3をインジェクショ
ン成形するに際し、Pb−2.95Sb−0.05As
合金製のブッシング4をインサート成形して埋め込んで
おく。ブッシングは前もって鋳造により製造し、十分な
強度をもたせるために、鋳造後一昼夜放置して時効硬化
を促進させておく。また、極板群を構成する複数枚の極
板の耳部1にCOS法でストラップ2を形成し、併せて
ストラップ2に極柱5を一体に設けておく。ストラップ
と極柱には、ブッシングと同様に、Pb−2.95Sb
−0.05As合金を用いる。そして、極柱5をブッシ
ング4に挿通し、その上端をブッシング先端部8より少
し突出させる。極柱5には、これをブッシング4に挿通
したときにブッシング下端面と当接する台座7を設け
て、ブッシング内周面と極柱外周面の間にできる間隙の
下端を塞いでおく。ブッシング下端面と台座7の当接面
に、互いに嵌合する環状の凸条と凹溝6を設ければ、間
隙の下端を塞ぐ機能は一層高くなる。このような状態
で、間隙に耐酸性の樹脂11(ゲル状のシリコン樹脂)
を流し込み固化させた後、図5(a)(b)により先に
説明した方法でバーナ溶接し端子部を形成する。極柱5
の先端部が間隙に流し込んだ耐酸性の樹脂11で覆われ
ていると、当該樹脂が熱で変質及び硬化して溶接部の内
部に取り込まれ、満足な溶接状態を得られない心配があ
る。不十分な溶接状態を避けるために、耐酸性の樹脂の
流し込みは、ブッシング先端部8に達しないようにす
る。An embodiment of the present invention will be described with reference to FIG. When the battery case 3 made of polypropylene is injection-molded, Pb-2.95Sb-0.05As
An alloy bushing 4 is embedded by insert molding. The bushing is manufactured in advance by casting, and is left for 24 hours after casting to promote age hardening in order to have sufficient strength. In addition, a strap 2 is formed on the ears 1 of a plurality of electrode plates constituting the electrode plate group by the COS method, and an electrode pole 5 is integrally provided on the strap 2. Pb-2.95Sb on the strap and pole as well as the bushing
A -0.05As alloy is used. Then, the pole 5 is inserted into the bushing 4, and the upper end thereof is slightly protruded from the bushing tip 8. The pole 5 is provided with a pedestal 7 that comes into contact with the lower end of the bushing when the pole 5 is inserted into the bushing 4 to close the lower end of the gap formed between the inner peripheral surface of the bushing and the outer peripheral surface of the pole. By providing an annular convex ridge and a concave groove 6 that fit each other on the contact surface between the lower end surface of the bushing and the pedestal 7, the function of closing the lower end of the gap is further enhanced. In such a state, acid-resistant resin 11 (gel-like silicon resin) is provided in the gap.
Is solidified, and burner welding is performed by the method described above with reference to FIGS. 5A and 5B to form a terminal portion. Pole 5
Is covered with the acid-resistant resin 11 poured into the gap, the resin is deteriorated and hardened by heat, is taken into the welded portion, and there is a concern that a satisfactory welding state cannot be obtained. In order to avoid an inadequate welding condition, the pouring of acid-resistant resin should not reach the bushing tip 8.
【0008】図2により、別の発明の実施の形態を説明
する。この例では、図1で説明した構成において、台座
7を省略してある。間隙の下端が開放されているので、
間隙に流し込んだ耐酸性の樹脂11が流出してストラッ
プ3上に堆積する。このような状態は電池の性能上特に
支障はないが、好ましくは、図1に示したように台座7
で間隙の下端を塞ぎ、樹脂が流出しないようにする。Referring to FIG. 2, another embodiment of the present invention will be described. In this example, the pedestal 7 is omitted in the configuration described with reference to FIG. Since the lower end of the gap is open,
The acid-resistant resin 11 flowing into the gap flows out and deposits on the strap 3. Such a state does not particularly hinder the performance of the battery, but preferably, as shown in FIG.
To close the lower end of the gap to prevent the resin from flowing out.
【0009】図3により、さらに別の発明の実施の形態
を説明する。この例では、図1に示した構成において、
ブッシング4の内周面を樹脂でコーティングしておく。
樹脂コーティング12は電槽蓋を構成する樹脂と同樹脂
であり、ブッシング4をインサートして行なう電槽蓋3
のインジェクション成形を4つに分割できる成形金型を
用いて実施し、電槽蓋の成形と同時にブッシング内周面
に樹脂コーティング12が施されるようにする。樹脂層
コーティング12は、ブッシング先端部8に達しないよ
うに形成する。このように樹脂コーティング12を形成
した上で、図1で説明した手順と同様の手順で耐酸性の
樹脂11を間隙に流し込み、極柱上端とブッシングを溶
接する。Referring to FIG. 3, another embodiment of the present invention will be described. In this example, in the configuration shown in FIG.
The inner peripheral surface of the bushing 4 is coated with a resin.
The resin coating 12 is the same resin as the resin constituting the battery case cover, and is formed by inserting the bushing 4 into the battery case cover 3.
Is performed using a molding die that can be divided into four parts so that the resin coating 12 is applied to the inner peripheral surface of the bushing simultaneously with the molding of the battery case lid. The resin layer coating 12 is formed so as not to reach the bushing tip 8. After the resin coating 12 is formed in this manner, the acid-resistant resin 11 is poured into the gap by the same procedure as that described with reference to FIG. 1, and the upper end of the pole and the bushing are welded.
【0010】図4に示した発明の実施の形態は、図3で
説明した構成において、台座7を省略してある。間隙の
下端が開放されているので、間隙に流し込んだ耐酸性の
樹脂11が流出してストラップ3上に堆積する。このよ
うな状態は電池の性能上特に支障はないが、好ましく
は、図3に示したように台座7で間隙の下端を塞ぎ、樹
脂が流出しないようにする。In the embodiment of the invention shown in FIG. 4, the pedestal 7 is omitted from the configuration described in FIG. Since the lower end of the gap is open, the acid-resistant resin 11 flowing into the gap flows out and accumulates on the strap 3. Such a state does not particularly hinder the performance of the battery, but preferably, the lower end of the gap is closed by the pedestal 7 as shown in FIG. 3 to prevent the resin from flowing out.
【0011】[0011]
実施例1 図1で説明した構成において、ブッシング4は、テーパ
形状で、先端部8では外径19.5mm,内径10mmの寸
法とし、下端部では外径20mm,内径12mmの寸法とし
た。また、電槽蓋3から突出している端子部分18mm,
電槽蓋に埋め込む部分36mmとした。極柱5は、テーパ
形状で、先端では外径5mm,下部の最も太い部分では外
径8mmの寸法とした。極柱5にはブッシング4の下端面
と当接する外径22mmの台座7を一体に設け、ブッシン
グ4の下端面と台座7の当接面に、互いに嵌合する環状
の凸条と凹溝6を形成する。具体的には、ブッシング4
の下端面に断面が半円(R=2mm)の凹溝を形成し、台
座7にこの凹溝と嵌合する突条を形成する。台座7は、
縦25mm,横45mm,高さ15mmのストラップ2と極柱
5をCOS法により形成するときに併せて設ける。極柱
5の高さ(65mm)は、極柱をブッシングに挿通したと
きブッシング先端部より若干突出する寸法に設定してあ
る。極柱5をブッシング4に挿通してできた隙間に耐酸
性の樹脂としてゲル状のシリコン樹脂を注入し、固化さ
せた後、バーナ溶接によって端子部を形成する。シリコ
ン樹脂の注入は、バーナ溶接に際して装着した金型に通
している冷却管と同じ高さ位置まで行なう。ブッシング
に挿通した極柱の先端部から10mm下方の位置である。
バーナ溶接には、プロパンと酸素を1:5の体積割合で
混合したガスを用いる。バーナノズルと溶接箇所との距
離を50mmに設定して、溶接を開始した最初の5秒間は
極柱先端部を中心に溶解させ、その後10秒間はノズル
を2秒で1回転する速度で円運動させながらブッシング
先端部を均一に溶融し溶接作業を進める。Example 1 In the configuration described with reference to FIG. 1, the bushing 4 was tapered and had a size of 19.5 mm in outer diameter and 10 mm in inner diameter at the tip 8 and a size of 20 mm in outer diameter and 12 mm in inner diameter at the lower end. Also, a terminal portion 18 mm protruding from the battery case cover 3,
The portion to be embedded in the battery case lid was 36 mm. The pole 5 has a tapered shape with an outer diameter of 5 mm at the tip and an outer diameter of 8 mm at the thickest part at the bottom. The pole 5 is integrally provided with a pedestal 7 having an outer diameter of 22 mm, which comes into contact with the lower end surface of the bushing 4. To form Specifically, bushing 4
A concave groove having a semicircular cross section (R = 2 mm) is formed on the lower end surface of the, and a ridge is formed on the pedestal 7 so as to fit with the concave groove. The pedestal 7
The strap 2 having a length of 25 mm, a width of 45 mm, and a height of 15 mm and the pole 5 are provided together when forming by the COS method. The height (65 mm) of the pole 5 is set to a size that slightly protrudes from the bushing tip when the pole is inserted into the bushing. A gel-like silicone resin as an acid-resistant resin is injected into a gap formed by inserting the pole 5 into the bushing 4 and solidified, and then a terminal portion is formed by burner welding. Injection of the silicone resin is performed up to the same height position as the cooling pipe passing through the mold attached at the time of burner welding. This is a position 10 mm below the tip of the pole inserted into the bushing.
For burner welding, a gas in which propane and oxygen are mixed at a volume ratio of 1: 5 is used. The distance between the burner nozzle and the welding point was set to 50 mm, the first 5 seconds after the welding started, the tip was melted around the pole tip, and the nozzle was then moved circularly at a speed of one rotation in 2 seconds for 10 seconds. While welding the tip of the bushing uniformly, welding work is advanced.
【0012】実施例2 図2で説明した構成において、ブッシング4は、テーパ
形状で、先端部8では外径19.5mm,内径10mmの寸
法とし、下端部では外径20mm,内径12mmの寸法とし
た。また、電槽蓋3から突出している端子部分18mm,
電槽蓋に埋め込む部分36mmとした。極柱5は、テーパ
形状で、先端では外径5mm,下部の最も太い部分では外
径8mmの寸法とした。実施例1のような台座は設けてい
ない。極柱5は、縦25mm,横45mm,高さ15mmのス
トラップ2と一緒にCOS法により形成する。極柱5の
高さは、極柱をブッシングに挿通したときブッシング先
端部より若干突出する寸法に設定してある。以下実施例
1と同様にして、バーナ溶接によって端子部を形成す
る。尚、本実施例では、実施例1のような台座は設けて
いないので、極柱5をブッシング4に挿通してできた隙
間にゲル状のシリコン樹脂を注入したとき、ストラップ
上まで流出してくる。実施例1の場合より若干多いシリ
コン樹脂を必要とする。Embodiment 2 In the configuration described with reference to FIG. 2, the bushing 4 has a tapered shape, the outer diameter of which is 19.5 mm and the inner diameter of 10 mm at the tip 8, and the outer diameter 20mm and the inner diameter 12mm at the lower end. did. Also, a terminal portion 18 mm protruding from the battery case cover 3,
The portion to be embedded in the battery case lid was 36 mm. The pole 5 has a tapered shape with an outer diameter of 5 mm at the tip and an outer diameter of 8 mm at the thickest part at the bottom. The pedestal as in the first embodiment is not provided. The pole 5 is formed by the COS method together with the strap 2 having a length of 25 mm, a width of 45 mm and a height of 15 mm. The height of the pole 5 is set so as to slightly protrude from the bushing tip when the pole is inserted into the bushing. Thereafter, the terminal portion is formed by burner welding in the same manner as in the first embodiment. In this embodiment, the pedestal as in the first embodiment is not provided, and when gel-like silicone resin is injected into the gap formed by inserting the pole 5 into the bushing 4, it flows out onto the strap. come. A little more silicon resin is required than in the first embodiment.
【0013】実施例3 図3で説明した構成において、ブッシングと極柱の寸法
を実施例1と同寸法に設定した。そして、実施例1と同
様にバーナ溶接により端子部を形成した。Third Embodiment In the configuration described with reference to FIG. 3, the dimensions of the bushing and the pole are set to the same dimensions as in the first embodiment. And the terminal part was formed by burner welding similarly to Example 1.
【0014】実施例4 図4で説明した構成において、ブッシングと極柱の寸法
を実施例2と同寸法に設定した。そして、実施例1と同
様にバーナ溶接により端子部を形成した。Embodiment 4 In the configuration described with reference to FIG. 4, the dimensions of the bushing and the pole are set to be the same as those of Embodiment 2. And the terminal part was formed by burner welding similarly to Example 1.
【0015】上記各実施例の鉛蓄電池の端子部につい
て、ブッシングと極柱の間隙に電解液が侵入するか否か
の評価を以下のように実施した。端子部分を極板群と電
槽蓋から切り離して、ブッシングの下端側を染色探傷試
験用の赤色の染色液中に1時間浸漬した後、30℃の乾
燥器中で5時間乾燥した。その後、端子部分の縦断面の
観察によって内部への染色液の浸透状態を評価した。染
色探傷試験は、通常、金属の鋳造や溶接状態を確認する
ときに用いられる方法である。試験箇所に塗布した染色
液は、鋳造欠陥や溶接欠陥などミクロな欠陥が存在する
部分に浸透するので、乾燥後に余分な染色液を洗浄しし
て除き、現像液を吹き付けると、欠陥部分に浸透した染
色液が浮き出て欠陥の確認をすることができる。本実施
例での端子部分の評価に際しては、ブッシングと極柱の
間隙に染色液が浸透しているかどうかを確認するだけで
あるので、余分な染色液の洗浄と現像の過程は省略し
た。染色液の浸透の状態を、○(染色液の浸透ほとんど
なし),△(染色液の浸透距離1cm未満),×(染色液
の浸透距離1cm以上)で表わして表1に示した。評価に
供した試料はそれぞれ4個である。表1には、図5にお
いて説明した端子部(従来例)の評価も併せて示した。
表1から、実施例における端子部は、ブッシング内周面
と極柱外周面の間に腐食層が生成されるのを抑制できる
ことを理解できる。With respect to the terminal portion of the lead-acid battery of each of the above-described embodiments, whether or not the electrolytic solution enters the gap between the bushing and the pole was evaluated as follows. The terminal portion was separated from the electrode plate group and the battery case lid, and the lower end side of the bushing was immersed in a red dyeing solution for a dye flaw detection test for 1 hour, and then dried in a dryer at 30 ° C. for 5 hours. Thereafter, the state of penetration of the staining solution into the inside was evaluated by observing the longitudinal section of the terminal portion. The dye flaw detection test is a method usually used for confirming a metal casting or welding state. The dye solution applied to the test location penetrates into the area where micro defects such as casting defects and welding defects exist.After drying, the excess dye solution is washed away, and the developer is sprayed on. The stained solution thus raised emerges, and the defect can be confirmed. In the evaluation of the terminal portion in the present embodiment, it is only necessary to check whether or not the dyeing solution has penetrated into the gap between the bushing and the pole, so that the steps of washing and developing the excess dyeing solution are omitted. Table 1 shows the state of permeation of the staining solution, which is represented by ほ と ん ど (there is almost no penetration of the staining solution), Δ (less than 1 cm of the penetration depth of the staining solution), and × (more than 1 cm of the penetration distance of the staining solution). The number of samples used for evaluation was four each. Table 1 also shows the evaluation of the terminal section (conventional example) described in FIG.
From Table 1, it can be understood that the terminal portion in the example can suppress generation of a corrosion layer between the inner peripheral surface of the bushing and the outer peripheral surface of the pole.
【0016】[0016]
【表1】 [Table 1]
【0017】また、上記実施例,従来例の各鉛蓄電池
(95D31型)について、JIS軽負荷寿命試験に準
拠する寿命試験を実施した。試験は、所定の充放電回数
毎に300Aの放電を行ない、30秒目電圧を測定する
ものである(試験温度80℃)。実施例1,2と従来例
の試験結果を図6に示す。また、実施例3,4の試験結
果を図7に示す。図6から、従来例では5500回の充
放電回数で電池寿命判定電圧である7.2Vに到達して
いるが、実施例1では6000回の充放電回数で、実施
例2では5800回の充放電回数で、それぞれ電池寿命
判定電圧である7.2Vに到達していることがわかる。
また、図7から、実施例3,4の各鉛蓄電池は、600
0回の充放電回数を越える電池寿命を有していることが
わかる。これは、ブッシング内周面を樹脂コーティング
しておくと、その表面がなめらかなになるため、耐酸性
の樹脂の流し込みを確実にできるからである。Further, a life test in accordance with the JIS light load life test was carried out for each of the lead storage batteries (95D31 type) of the above embodiment and the conventional example. In the test, a discharge of 300 A is performed every predetermined number of times of charging and discharging, and the voltage is measured at the 30th second (test temperature: 80 ° C.). FIG. 6 shows test results of Examples 1 and 2 and a conventional example. FIG. 7 shows the test results of Examples 3 and 4. From FIG. 6, in the conventional example, the battery life determination voltage reached 7.2 V in 5500 charge / discharge cycles, but in Example 1, the charge / discharge cycle was 6000 times, and in Example 2, 5800 charge / discharge cycles were performed. It can be seen that the number of discharges has reached the battery life determination voltage of 7.2 V, respectively.
Further, from FIG. 7, each of the lead storage batteries of Examples 3 and 4 is 600
It can be seen that the battery life has exceeded the number of times of charge / discharge of 0 times. This is because if the inner peripheral surface of the bushing is coated with a resin, the surface becomes smooth, so that the acid-resistant resin can be reliably poured.
【0018】[0018]
【発明の効果】上述したように、本発明に係る鉛蓄電池
の端子部形成法は、ブッシング内周面と極柱外周面の隙
間に電解液が侵入する余地をなくし、当該部分での腐食
の進行を抑制することができる。As described above, the method for forming a terminal portion of a lead-acid battery according to the present invention eliminates the room for the electrolyte to enter the gap between the inner peripheral surface of the bushing and the outer peripheral surface of the pole, and prevents corrosion at the relevant portion. Progress can be suppressed.
【図1】本発明の実施の形態を示す端子部分の断面図
(実施例1)である。FIG. 1 is a cross-sectional view (Example 1) of a terminal portion showing an embodiment of the present invention.
【図2】本発明の実施の形態を示す端子部分の断面図
(実施例2)である。FIG. 2 is a sectional view (Example 2) of a terminal portion showing the embodiment of the present invention.
【図3】本発明の実施の形態を示す端子部分の断面図
(実施例3)である。FIG. 3 is a cross-sectional view (Example 3) of a terminal portion showing the embodiment of the present invention.
【図4】本発明の実施の形態を示す端子部分の断面図
(実施例4)である。FIG. 4 is a cross-sectional view (Example 4) of a terminal portion showing the embodiment of the present invention.
【図5】従来の端子部分を示し、(a)は溶接前、
(b)は溶接後の断面図である。5A and 5B show a conventional terminal portion, and FIG.
(B) is a sectional view after welding.
【図6】実施例1,2と従来例の鉛蓄電池の寿命試験に
おける300A放電時の30秒目電圧の経時変化を示す
図である。FIG. 6 is a graph showing a temporal change of a voltage at the 30th second at a discharge of 300 A in a life test of lead storage batteries of Examples 1 and 2 and a conventional example.
【図7】実施例3,4の鉛蓄電池の寿命試験における3
00A放電時の30秒目電圧の経時変化を示す図であ
る。FIG. 7 shows a result of a life test of the lead storage batteries of Examples 3 and 4;
It is a figure which shows the time-dependent change of the 30th second voltage at the time of 00A discharge.
1は極板の耳部 2はストラップ 3は電槽蓋 4はブッシング 5は極柱 6は環状の凸条と凹溝 7は台座 8はブッシング先端部 9は溶接部 10は金型 11は耐酸性の樹脂 12は樹脂コーティング 1 is an ear of an electrode plate 2 is a strap 3 is a battery case lid 4 is a bushing 5 is an electrode pole 6 is an annular ridge and groove 7 is a pedestal 8 is a bushing tip 9 is a welded part 10 is a mold 11 is an acid resistant Resin 12 is resin coating
Claims (4)
シングに、極板群に接続された極柱を挿通して、当該極
柱上端と前記ブッシングを溶接する鉛蓄電池の端子形成
法において、 溶接前にブッシング内周面と極柱外周面との間隙に耐酸
性の樹脂を流し込み、当該隙間を樹脂で埋めることを特
徴とする鉛蓄電池の端子形成法。1. A method for forming a terminal of a lead-acid battery in which a pole connected to an electrode group is inserted into a lead or lead alloy bushing embedded in a battery case lid and the upper end of the pole and the bushing are welded. 3. A method for forming a terminal of a lead-acid battery according to claim 1, wherein an acid-resistant resin is poured into a gap between an inner peripheral surface of the bushing and an outer peripheral surface of the pole before welding.
を設けておく請求項1記載の鉛蓄電池の端子形成法。2. The method for forming a terminal of a lead-acid battery according to claim 1, wherein the pole is provided with a pedestal with which the lower end surface of the bushing abuts.
に嵌合する環状の凸条と凹溝を設けておく請求項2記載
の鉛蓄電池の端子形成法。3. The method for forming a terminal of a lead-acid battery according to claim 2, wherein an annular convex ridge and a concave groove to be fitted to each other are provided on a contact surface between the lower end surface of the bushing and the pedestal.
周面と極柱外周面の少なくとも一方の表面に樹脂コーテ
ィングをしておく請求項1〜3のいずれかに記載の鉛蓄
電池の端子形成法。4. A lead-acid battery terminal according to claim 1, wherein at least one of the inner peripheral surface of the bushing and the outer peripheral surface of the pole is coated with a resin before the acid-resistant resin is poured. Law.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9202090A JPH1145698A (en) | 1997-07-29 | 1997-07-29 | Terminal forming method for lead acid battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9202090A JPH1145698A (en) | 1997-07-29 | 1997-07-29 | Terminal forming method for lead acid battery |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH1145698A true JPH1145698A (en) | 1999-02-16 |
Family
ID=16451810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9202090A Pending JPH1145698A (en) | 1997-07-29 | 1997-07-29 | Terminal forming method for lead acid battery |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH1145698A (en) |
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