JP2004178833A - Cylindrical type sealed lead-acid battery - Google Patents

Cylindrical type sealed lead-acid battery Download PDF

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Publication number
JP2004178833A
JP2004178833A JP2002340548A JP2002340548A JP2004178833A JP 2004178833 A JP2004178833 A JP 2004178833A JP 2002340548 A JP2002340548 A JP 2002340548A JP 2002340548 A JP2002340548 A JP 2002340548A JP 2004178833 A JP2004178833 A JP 2004178833A
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JP
Japan
Prior art keywords
cylindrical
cylindrical body
battery case
battery
sealed lead
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.)
Abandoned
Application number
JP2002340548A
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Japanese (ja)
Inventor
Satoshi Minoura
敏 箕浦
Nobukazu Tanaka
伸和 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Corp
Original Assignee
Shin Kobe Electric Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shin Kobe Electric Machinery Co Ltd filed Critical Shin Kobe Electric Machinery Co Ltd
Priority to JP2002340548A priority Critical patent/JP2004178833A/en
Publication of JP2004178833A publication Critical patent/JP2004178833A/en
Abandoned legal-status Critical Current

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    • 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

<P>PROBLEM TO BE SOLVED: To provide a cylindrical type sealed lead-acid battery suppressing temperature increase of an electrode group. <P>SOLUTION: A positive electrode 1 and a negative electrode 2 are wound up spirally through a separator 3 to form an electrode group 5. The electrode group 5 is housed in a cylindrical battery box 8 with a bottom. A cylindrical body 6 projecting inside the center part of the electrode group wound up spirally is provided at the bottom part 8a of the battery box 8. The periphery of the base part of the cylindrical body 6 is continuously connected with the bottom part 8a of the battery box 8. The cylindrical body 6 has a center opening 6a provided at the bottom part 8a of the battery box 8 with one end in the projecting direction closed. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、円筒形密閉式鉛蓄電池に関するものである。
【０００２】
【従来の技術】
円筒形密閉式鉛蓄電池は、正極板と負極板とがセパレータを介して渦巻状に捲回された極板群を持ち、この極板群はその中心部が空洞になっいて、有底円筒状の電槽内に収容された構造であった（例えば、特許文献１参照。）。
【０００３】
このような円筒形密閉式鉛蓄電池は、過充電時に正極から発生する酸素ガスを負極において還元することによって、電池内圧の上昇を防止し、密閉化が可能となっている。このとき、負極での酸素ガスの還元反応は発熱を伴う。
【０００４】
【特許文献１】
実用新案登録第２５３８７１９号（図２）
【０００５】
【発明が解決しようとする課題】
しかしながら、このような構造の円筒形密閉式鉛蓄電池を６０℃ぐらいの環境で使用すると、正極の酸素発生電位が低下するため酸素発生量が増加し、負極での還元反応量が増加し、電池内での発熱量が多くなる。その結果、電池温度は更に上昇し、正極の酸素発生電位が更に低下する。これが悪循環となり、電池温度は上昇し続け、熱逸走という状況になり、電池として機能しなくなる。従って、円筒形密閉式鉛蓄電池は、一般的な電槽構造では熱が内部にこもり易い問題点があった。
【０００６】
本発明の目的は、極板群の温度上昇を抑制できる円筒形密閉式鉛蓄電池を提供することにある。
【０００７】
【課題を解決するための手段】
本発明は、正極板と負極板とがセパレータを介して渦巻状に捲回された極板群を備え、該極板群が有底筒状の電槽内に収容されている円筒形密閉式鉛蓄電池を対象とする。
【０００８】
本発明に係る円筒形密閉式鉛蓄電池では、電槽の底部には、渦巻状に捲回された極板群の中心部内に突出する筒状体が設けられ、該筒状体はその基部の周囲が電槽の底部に連続的につながっていて、該筒状体はその中心の孔が電槽の底部に開口され、その突出方向の端部が閉じられていることを特徴とする。
【０００９】
このような円筒形密閉式鉛蓄電池においては、極板群が発熱すると、その熱は渦巻状に捲回された極板群の中心部内に突出する筒状体を経て電槽の底部に放熱される。このため、外気との接触面積が増加し、冷却効果を高めることができ、円筒形密閉式鉛蓄電池の温度上昇を抑制することができる。
【００１０】
この場合、筒状体の高さが、極板の高さ以上になっていると、この筒状体により極板群の放熱を内部から良好に行うことができる。
【００１１】
また、筒状体は極板群の巻き芯を兼ねていて、該筒状体は電槽の底部の孔の周囲に気密液密に固定されていると、この巻き芯を兼ねた筒状体の回りに極板群を渦巻状に捲回して該極板群を形成することができ、そのままの状態で電槽内に挿入して筒状体を電槽の底部の孔の周囲に気密液密に固定することができて、円筒形密閉式鉛蓄電池の製造を容易に行うことができる。また、筒状体が極板群の巻き芯を兼ねていると、部品点数を少なくして円筒形密閉式鉛蓄電池の製造を行うことができる。
【００１２】
また、筒状体が電槽の成形時に一体に形成されていると、筒状体付き電槽の製造を容易に行うことができる。
【００１３】
さらに、電槽と筒状体がプラスチック樹脂で形成されていと、電槽と筒状体の成形を樹脂の成形で容易に行うことができる。
【００１４】
【発明の実施の形態】
以下、本発明の実施の形態を図を参照しつつ詳細に説明する。
【００１５】
厚さ０．７ｍｍの鉛合金箔を用いて、幅８０ｍｍ×長さ６００ｍｍの極板基体を打ち抜いて打ち抜き格子体よりなる集電体を作製した。
【００１６】
次に、この集電体を用いて電極を作製した。即ち、正極は、酸化度７０％の鉛粉と希硫酸とを混練し、活物質ペーストを得た後、この活物質ペーストを集電体に充填し、乾燥して形成した。負極は、酸化度７０％の鉛粉に少量の炭素粉末、リグニン、バリウム化合物を加え、希硫酸と混練した後、集電体に充填し、乾燥して形成した。
【００１７】
図１に示すように、これら正極１と負極２とをガラスマットセパレータ３を介して渦巻き状に捲回し、これら正極１と負極２の集電タブをＣＯＳ（ｃａｓｔ−ｏｎ−ｓｔｒａｐ）法により正極ストラップ４ａ、負極ストラップ４ｂと溶接し、極板群５を得た。
【００１８】
この極板群５を渦巻状に捲回する際の捲回軸芯として、図２に示すように一端（上端）が閉塞され且つ他端（下端）が開口した円筒状の筒状体６を用いた。このとき、筒状体６は、正極１と負極２との高さ以上の高さを有して、その閉塞端寄りの位置まで孔６ａがあいた構造となっている。
【００１９】
その後、筒状体６付きの極板群５を、図３に示すように、中心部に孔７があいた底部８ａを有する有底筒状の電槽８内に挿入し、該筒状体６の下端を電槽８の底部８ａの孔７の周囲に連続して溶着して気密液密に固定した。
【００２０】
この後、電槽８の上端に図示しないが上蓋を溶着し、該電槽８内に比重１．２５０の希硫酸を注液し、電槽化成を行い、円筒形密閉式鉛蓄電池Ａを得た。
【００２１】
筒状体６とは別の巻き芯を用いて極板群５を渦巻き状に捲回し、しかる後に巻き芯を除去した中空の渦巻き状極板群５を、図４に示す筒状体６が電槽８の底部８ａの中心に一体に成形されている有底筒状の電槽８内に挿入し、該渦巻き状極板群５の中心の孔を筒状体６の外周に嵌め、この後、電槽８の上端に図示しないが上蓋を溶着し、該電槽８内に比重１．２５０の希硫酸を注液し、電槽化成を行い、円筒形密閉式鉛蓄電池Ｂを得た。
【００２２】
また、渦巻き状極板群５内の軸芯の筒状体６が正極１と負極２の高さの１／３となっている極板群を用いて、円筒形密閉式鉛蓄電池Ａと同様に作製して、円筒形密閉式鉛蓄電池Ｃを得た。
【００２３】
従来例として、中空の渦巻き状極板群５を、筒状体６のない電槽に入れて、円筒形密閉式鉛蓄電池Ｂと同様に作製して、円筒形密閉式鉛蓄電池Ｄを得た。
【００２４】
これら４つの円筒形密閉式鉛蓄電池Ａ，Ｂ，Ｃ，Ｄを、６０℃の恒温槽中に１２時間放置した。１２時間後、２５℃の恒温槽中に移し、電池内部の温度変化を計測した。
【００２５】
図５に、４つの円筒形密閉式鉛蓄電池Ａ，Ｂ，Ｃ，Ｄの内部温度の経時変化を示す。従来例の電池Ｄは電池内部温度が２５℃に低下するまでに９時間近く要しているのに対し、電池Ａおよび電池Ｂは３時間、電池Ｃは５時間であった。つまり、電槽８の底部８ａから内部に筒状体６を設けた電池構造にすることより、電池の冷却効果が上昇したことを示している。さらには、筒状体６を正極１と負極２の高さまで設けることにより飛躍的に冷却効果が上昇したことを示している。
このように、本発明の電池Ａ，Ｂ，Ｃは電池の冷却速度が著しく向上しており、つまり、電池の温度上昇を極めて抑制することが可能である。
【００２６】
【発明の効果】
本発明に係る円筒形密閉式鉛蓄電池では、電槽の底部には、渦巻状に捲回された極板群の中心部内に突出する筒状体を設け、該筒状体はその基部の周囲が電槽の底部に連続的につながっていて、該筒状体はその中心の孔が電槽の底部に開口し、その突出方向の端部が閉じられているので、渦巻状の極板群が発熱すると、その熱は渦巻状の極板群の中心部内に突出する筒状体を経て電槽の底部に放熱される。このため、外気との接触面積が増加し、冷却効果を高めることができ、円筒形密閉式鉛蓄電池の温度上昇を抑制することができる。
【００２７】
この場合、筒状体の高さが、極板の高さ以上になっていると、この筒状体により極板群の放熱を内部から良好に行うことができる。
【００２８】
また、筒状体は極板群の巻き芯を兼ねていて、該筒状体は電槽の底部の孔の周囲に気密液密に固定されていると、この巻き芯を兼ねた筒状体の回りに極板群を捲回して該極板群を容易に形成することができ、そのままの状態で電槽内に挿入して筒状体を電槽の底部の孔の周囲に気密液密に固定することができて、円筒形密閉式鉛蓄電池の製造を容易に行うことができる。また、筒状体が極板群の巻き芯を兼ねていると、部品点数を少なくして円筒形密閉式鉛蓄電池の製造を行うことができる。
【００２９】
また、筒状体が電槽の成形時に一体に形成されていると、筒状体付き電槽の製造を容易に行うことができる。
【００３０】
さらに、電槽と筒状体がプラスチック樹脂で形成されていと、電槽と筒状体の成形を樹脂の成形で容易に行うことができる。
【図面の簡単な説明】
【図１】本発明に係る円筒形密閉式鉛蓄電池の実施の形態の第１例の縦断面図である。
【図２】この実施の形態の第１例で用いている筒状体の斜視図である。
【図３】この実施の形態の第１例で用いている電槽の斜視図である。
【図４】本発明に係る円筒形密閉式鉛蓄電池の実施の形態の第２例で用いている筒状体付き電槽の斜視図である。
【図５】本発明の電池と従来の電池の内部温度の変化を示す図である。
【符号の説明】
１ 正極
２ 負極
３ セパレータ
４ａ 正極ストラップ
４ｂ 負極ストラップ
５ 極板群
６ 筒状体
６ａ 孔
７ 孔
８ 電槽
８ａ 底部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cylindrical sealed lead-acid battery.
[0002]
[Prior art]
A cylindrical sealed lead-acid battery has an electrode group in which a positive electrode plate and a negative electrode plate are spirally wound with a separator interposed therebetween, and the electrode plate group has a hollow center portion and a cylindrical shape with a bottom. (For example, see Patent Document 1).
[0003]
Such a cylindrical sealed lead-acid battery is capable of preventing an increase in the internal pressure of the battery and reducing the oxygen pressure by reducing the oxygen gas generated from the positive electrode at the time of overcharging at the negative electrode. At this time, the reduction reaction of oxygen gas at the negative electrode involves heat generation.
[0004]
[Patent Document 1]
Utility Model Registration No. 2538719 (FIG. 2)
[0005]
[Problems to be solved by the invention]
However, when a cylindrical sealed lead-acid battery having such a structure is used in an environment of about 60 ° C., the oxygen generation potential of the positive electrode decreases, so that the amount of oxygen generated increases, and the amount of reduction reaction at the negative electrode increases, and The calorific value in the inside increases. As a result, the battery temperature further rises, and the oxygen generation potential of the positive electrode further falls. This is a vicious cycle, and the battery temperature continues to rise, causing a situation of thermal runaway, and the battery no longer functions. Therefore, the cylindrical sealed lead-acid battery has a problem that heat tends to be trapped inside in a general battery case structure.
[0006]
An object of the present invention is to provide a cylindrical sealed lead-acid battery that can suppress a rise in temperature of an electrode group.
[0007]
[Means for Solving the Problems]
The present invention includes a group of electrode plates in which a positive electrode plate and a negative electrode plate are spirally wound with a separator interposed therebetween, and the electrode plate group is housed in a bottomed cylindrical battery case. Targets lead-acid batteries.
[0008]
In the cylindrical sealed lead-acid storage battery according to the present invention, the bottom of the battery case is provided with a tubular body projecting into the center of the spirally wound electrode plate group, and the tubular body is provided at the base thereof. The periphery is continuously connected to the bottom of the battery case, and the cylindrical body is characterized in that a hole at the center thereof is opened at the bottom of the battery case and the end in the protruding direction is closed.
[0009]
In such a cylindrical sealed lead-acid battery, when the electrode group generates heat, the heat is radiated to the bottom of the battery case through a cylindrical body protruding into the center of the spirally wound electrode group. You. Therefore, the contact area with the outside air increases, the cooling effect can be enhanced, and the temperature rise of the cylindrical sealed lead-acid battery can be suppressed.
[0010]
In this case, when the height of the cylindrical body is equal to or greater than the height of the electrode plate, heat can be satisfactorily radiated from the inside of the electrode plate group by the cylindrical body.
[0011]
Further, the cylindrical body also serves as the core of the electrode group, and when the cylindrical body is fixed in a gas-tight and liquid-tight manner around the hole at the bottom of the battery case, the cylindrical body also serves as the core. The electrode group can be formed by spirally winding the electrode group around, and the cylindrical body is inserted into the battery case as it is, and the cylindrical body is sealed around the hole at the bottom of the battery case. It can be tightly fixed, and can easily manufacture a cylindrical sealed lead-acid battery. In addition, when the cylindrical body also serves as the winding core of the electrode plate group, the number of components can be reduced and the manufacture of a cylindrical sealed lead-acid battery can be performed.
[0012]
In addition, when the cylindrical body is integrally formed at the time of molding the battery case, it is possible to easily manufacture the battery case with the tubular body.
[0013]
Further, when the battery case and the cylindrical body are formed of a plastic resin, the battery case and the cylindrical body can be easily formed by molding the resin.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0015]
Using a lead alloy foil having a thickness of 0.7 mm, an electrode plate substrate having a width of 80 mm and a length of 600 mm was punched to produce a current collector formed of a punched grid.
[0016]
Next, an electrode was manufactured using this current collector. That is, the positive electrode was formed by kneading lead powder having a degree of oxidation of 70% and dilute sulfuric acid to obtain an active material paste, filling the active material paste into a current collector, and drying. The negative electrode was formed by adding a small amount of carbon powder, a lignin, and a barium compound to lead powder having an oxidation degree of 70%, kneading with dilute sulfuric acid, filling the current collector, and drying.
[0017]
As shown in FIG. 1, the positive electrode 1 and the negative electrode 2 are spirally wound with a glass mat separator 3 interposed therebetween, and the current collecting tabs of the positive electrode 1 and the negative electrode 2 are separated by a COS (cast-on-strap) method. The electrode group 5 was obtained by welding with the strap 4a and the negative electrode strap 4b.
[0018]
As shown in FIG. 2, a cylindrical tubular body 6 closed at one end (upper end) and opened at the other end (lower end) is used as a winding axis when the electrode group 5 is spirally wound. Using. At this time, the cylindrical body 6 has a height equal to or higher than the height of the positive electrode 1 and the negative electrode 2, and has a structure in which a hole 6 a is provided to a position near the closed end.
[0019]
Thereafter, the electrode plate group 5 with the cylindrical body 6 is inserted into a bottomed cylindrical battery case 8 having a bottom 8a having a hole 7 in the center as shown in FIG. Was continuously welded to the periphery of the hole 7 in the bottom 8a of the battery case 8 to be fixed in an airtight and liquid tight manner.
[0020]
Thereafter, an upper lid (not shown) is welded to the upper end of the battery case 8, and dilute sulfuric acid having a specific gravity of 1.250 is injected into the battery case 8 to form a battery case, thereby obtaining a cylindrical sealed lead-acid battery A. Was.
[0021]
The electrode group 5 is spirally wound using a winding core different from the cylindrical body 6, and then the hollow spiral electrode group 5 from which the winding core has been removed is replaced with the cylindrical body 6 shown in FIG. It is inserted into the bottomed cylindrical battery case 8 integrally formed at the center of the bottom portion 8a of the battery case 8, and the center hole of the spirally wound electrode plate group 5 is fitted to the outer periphery of the tubular body 6, and Thereafter, an upper lid (not shown) was welded to the upper end of the battery case 8, and dilute sulfuric acid having a specific gravity of 1.250 was injected into the battery case 8 to form a battery case, thereby obtaining a cylindrical sealed lead-acid battery B. .
[0022]
The same as the cylindrical sealed lead-acid battery A, using an electrode group in which the cylindrical body 6 of the axial core in the spiral electrode group 5 is ３ of the height of the positive electrode 1 and the negative electrode 2. To obtain a cylindrical sealed lead-acid battery C.
[0023]
As a conventional example, the hollow spiral electrode group 5 was placed in a battery case having no cylindrical body 6 and manufactured in the same manner as the cylindrical sealed lead-acid battery B to obtain a cylindrical sealed lead-acid battery D. .
[0024]
These four sealed cylindrical lead-acid batteries A, B, C and D were left in a thermostat at 60 ° C. for 12 hours. After 12 hours, the battery was transferred into a thermostat at 25 ° C., and the temperature change inside the battery was measured.
[0025]
FIG. 5 shows changes over time in the internal temperatures of the four cylindrical sealed lead-acid batteries A, B, C, and D. Battery D of the conventional example required nearly 9 hours for the battery internal temperature to drop to 25 ° C., whereas Battery A and Battery B required 3 hours and Battery C required 5 hours. In other words, this shows that the battery structure in which the cylindrical body 6 is provided from the bottom 8a of the battery case 8 to the inside thereof has improved the cooling effect of the battery. Furthermore, it is shown that the cooling effect is dramatically increased by providing the cylindrical body 6 up to the height of the positive electrode 1 and the negative electrode 2.
As described above, in the batteries A, B, and C of the present invention, the cooling rate of the batteries is remarkably improved, that is, the temperature rise of the batteries can be extremely suppressed.
[0026]
【The invention's effect】
In the cylindrical sealed lead-acid storage battery according to the present invention, a cylindrical body is provided at the bottom of the battery case so as to project into the center of the spirally wound electrode plate group, and the cylindrical body is provided around the base. Are continuously connected to the bottom of the battery case, and the center of the cylindrical body is opened at the bottom of the battery case, and the end in the protruding direction is closed. When heat is generated, the heat is radiated to the bottom of the battery case via a cylindrical body projecting into the center of the spiral electrode group. Therefore, the contact area with the outside air increases, the cooling effect can be enhanced, and the temperature rise of the cylindrical sealed lead-acid battery can be suppressed.
[0027]
In this case, when the height of the cylindrical body is equal to or greater than the height of the electrode plate, heat can be satisfactorily radiated from the inside of the electrode plate group by the cylindrical body.
[0028]
Further, the cylindrical body also serves as the core of the electrode group, and when the cylindrical body is fixed in a gas-tight and liquid-tight manner around the hole at the bottom of the battery case, the cylindrical body also serves as the core. The electrode group can be easily formed by winding the electrode group around, and the cylindrical body is airtight and liquid-tight around the hole at the bottom of the battery case by being inserted into the battery case as it is. , And the production of a cylindrical sealed lead-acid battery can be facilitated. In addition, when the cylindrical body also serves as the winding core of the electrode plate group, the number of components can be reduced and the manufacture of a cylindrical sealed lead-acid battery can be performed.
[0029]
In addition, when the cylindrical body is integrally formed at the time of molding the battery case, it is possible to easily manufacture the battery case with the tubular body.
[0030]
Further, when the battery case and the cylindrical body are formed of a plastic resin, the battery case and the cylindrical body can be easily formed by molding the resin.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a first example of an embodiment of a cylindrical sealed lead-acid battery according to the present invention.
FIG. 2 is a perspective view of a cylindrical body used in a first example of the embodiment.
FIG. 3 is a perspective view of a battery case used in a first example of this embodiment.
FIG. 4 is a perspective view of a cylindrical battery case used in a second example of the embodiment of the sealed cylindrical lead-acid battery according to the present invention.
FIG. 5 is a diagram showing changes in the internal temperatures of the battery of the present invention and a conventional battery.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Positive electrode 2 Negative electrode 3 Separator 4a Positive electrode strap 4b Negative strap 5 Electrode group 6 Cylindrical body 6a Hole 7 Hole 8 Battery case 8a Bottom part

Claims (5)

正極板と負極板とがセパレータを介して渦巻状に捲回された極板群を備え、該極板群が有底筒状の電槽内に収容されている円筒形密閉式鉛蓄電池において、
前記電槽の底部には、渦巻状に捲回された前記極板群の中心部内に突出する筒状体が設けられ、該筒状体はその基部の周囲が前記電槽の底部に連続的につながっていて、該筒状体はその中心の孔が前記電槽の底部に開口され、その突出方向の端部が閉じられていることを特徴とする円筒形密閉式鉛蓄電池。A positive electrode plate and a negative electrode plate are provided with a group of electrode plates spirally wound via a separator, and the group of electrode plates is housed in a bottomed cylindrical battery case.
At the bottom of the battery case, a tubular body projecting into the center of the spirally wound electrode plate group is provided, and the base of the tubular body is continuous with the bottom of the battery case. A closed hole in the center of the cylindrical body is opened at the bottom of the battery case, and an end in a protruding direction of the cylindrical body is closed. 前記筒状体の高さは、前記極板の高さ以上になっていることを特徴とする請求項１に記載の円筒形密閉式鉛蓄電池。The cylindrical sealed lead-acid battery according to claim 1, wherein the height of the cylindrical body is equal to or greater than the height of the electrode plate. 前記筒状体は前記極板群の巻き芯を兼ねていて、該筒状体は前記電槽の底部の孔の周囲に気密液密に固定されていることを特徴とする請求項１または２に記載の円筒形密閉式鉛蓄電池。The said cylindrical body doubles as the winding core of the said electrode group, and this cylindrical body is air-tightly and liquid-tightly fixed around the hole of the bottom part of the said battery case. 3. A cylindrical sealed lead-acid battery according to claim 1. 前記筒状体は前記電槽の成形時に一体に形成されていることを特徴とする請求項１または２に記載の円筒形密閉式鉛蓄電池。The cylindrical lead-acid battery according to claim 1, wherein the cylindrical body is formed integrally when the battery case is formed. 前記電槽と前記筒状体はプラスチック樹脂で形成されていることを特徴とする請求項１，２，３または４に記載の円筒形密閉式鉛蓄電池。The cylindrical sealed lead-acid battery according to claim 1, 2, 3, or 4, wherein the battery case and the tubular body are formed of a plastic resin.
JP2002340548A 2002-11-25 2002-11-25 Cylindrical type sealed lead-acid battery Abandoned JP2004178833A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013539178A (en) * 2010-08-30 2013-10-17 ハイウオーター・イノベーシヨンズ・エルエルシー Low aspect ratio spiral wound control valve type lead acid battery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013539178A (en) * 2010-08-30 2013-10-17 ハイウオーター・イノベーシヨンズ・エルエルシー Low aspect ratio spiral wound control valve type lead acid battery

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