JP2006269139A - Wound-up type sealed lead acid storage battery - Google Patents

Wound-up type sealed lead acid storage battery Download PDF

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JP2006269139A
JP2006269139A JP2005082953A JP2005082953A JP2006269139A JP 2006269139 A JP2006269139 A JP 2006269139A JP 2005082953 A JP2005082953 A JP 2005082953A JP 2005082953 A JP2005082953 A JP 2005082953A JP 2006269139 A JP2006269139 A JP 2006269139A
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wound
electrode plate
paste paper
thickness
paste
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JP4529750B2 (en
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Satoshi Minoura
敏 箕浦
Kenichi Maeda
謙一 前田
Nobukazu Tanaka
伸和 田中
Takafumi Kondo
隆文 近藤
Shinsuke Kobayashi
真輔 小林
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Resonac Corp
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Shin Kobe Electric Machinery Co Ltd
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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
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    • 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

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a wound-up sealed lead acid storage battery capable of suppressing an inner short circuit by preventing weaving shifting in winding up of the wound-up type sealed type lead acid storage battery. <P>SOLUTION: Paste sheets are adhered to both faces of both a positive electrode plate and a negative electrode plate, and in winding up in the positive electrode plate and the negative electrode plate respectively, because thickness of the paste sheets 3 of the faces which become inside is made thinner than that of the paste sheets 4 of the faces which become outside, weaving shifting in winding up is prevented. As a proportion rate of the thickness of the paste sheets P/Q (P: thickness of the paste sheets which become inside, Q: thickness of the paste sheets which become outside), 0.1≤P/Q≤0.7 is an appropriate value. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は捲回型密閉式鉛蓄電池に関するものである。   The present invention relates to a wound type sealed lead-acid battery.

捲回型密閉式鉛蓄電池の電極群は、長尺の正負極板をセパレータを介して捲回された構造をもっている。長尺の比較的やわらかい極板を取り扱うため、活物質の脱落を防止することは重要な課題である。一方、長尺な極板を捲回した構造であるため、巻きずれの発生しにくい構造であることが要求される。特許文献１には、極板に貼り付けるセパレータにペースト紙を用い、ペースト紙にスリット加工を施すことにより活物質の脱落を防止し、かつ巻きずれを防止することが提案されている。   The electrode group of the wound type sealed lead-acid battery has a structure in which long positive and negative electrode plates are wound through a separator. In order to handle a long and relatively soft electrode plate, it is an important issue to prevent the active material from falling off. On the other hand, since it is a structure in which a long electrode plate is wound, it is required to have a structure in which winding deviation hardly occurs. Patent Document 1 proposes that paste paper is used as a separator to be attached to an electrode plate, and slitting is performed on the paste paper to prevent the active material from falling off and to prevent winding slippage.

特開２００２−１５８０３０号公報JP 2002-158030 A

上記記載の技術により、巻きずれを防止することが可能であるが、高速で捲回をおこなうと、貼り付けたペースト紙の破断が不規則に発生するようになるため、十分な巻きずれ防止効果が得られなかった。巻きずれがあると内部短絡を発生しやすくなり、電池の不良率が増加する。   Although it is possible to prevent winding slip by the above-described technology, if winding is performed at high speed, the pasted paste paper breaks irregularly. Was not obtained. If there is a winding deviation, an internal short circuit is likely to occur, and the defective rate of the battery increases.

本発明は以上のことを鑑みてなされたものである。   The present invention has been made in view of the above.

正極板および負極板とがセパレータを介して捲回された電極群を持つ捲回型密閉式鉛蓄電池において、正極板および負極板ともに両面にペースト紙が貼り付けてあり、正極板および負極板それぞれにおいて、捲回時に内側になる面のペースト紙が、外側になる面のペースト紙よりも厚みが薄いことを特徴とする。   In a wound type sealed lead-acid battery having an electrode group in which a positive electrode plate and a negative electrode plate are wound through a separator, paste paper is pasted on both surfaces of the positive electrode plate and the negative electrode plate, , The paste paper on the inner side when wound is thinner than the paste paper on the outer side.

本発明による捲回型密閉式鉛蓄電池は、極板に貼り付けたペースト紙によって、活物質の脱落を抑制することができる。また、捲回時に内側となる面と外側になる面では曲率が違うために、内側のペースト紙はたるむ方向の力を受け、外側のペースト紙は引っ張られる方向の力を受けることになり、このことが極板の巻きずれの原因となっているが、内側のペースト紙の厚みを外側のペースト紙の厚みよりも薄くすることにより、これらの力を緩和することが可能となり、巻きずれを抑制することができる。   The wound sealed lead-acid battery according to the present invention can suppress the active material from dropping off by the paste paper attached to the electrode plate. Also, since the curvature is different between the inner side and the outer side during winding, the inner paste paper receives a force in the direction of sagging, and the outer paste paper receives a force in the direction of pulling. This causes the winding of the electrode plate to be reduced. By making the thickness of the inner paste paper thinner than that of the outer paste paper, these forces can be alleviated and the winding error is suppressed. can do.

以下、本発明を実施例に基づいて詳細に説明するが、本発明は下記実施例に何ら限定されるものではなく、その要旨を変更しない範囲において、適宜変更して実施することができる。   EXAMPLES Hereinafter, although this invention is demonstrated in detail based on an Example, this invention is not limited to the following Example at all, In the range which does not change the summary, it can change suitably and can implement.

本発明の実施例を以下に説明する。   Examples of the present invention will be described below.

厚さ０．７ｍｍの鉛合金箔を用いて幅８０ｍｍ×長さ６００ｍｍの集電体を打ち抜き格子により作製した。次に前記集電体を用いて電極を作製した。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、集電体に充填した。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、集電体に充填した。   Using a lead alloy foil having a thickness of 0.7 mm, a current collector having a width of 80 mm and a length of 600 mm was produced by a punched grid. Next, an electrode was produced using the current collector. The positive electrode was mixed with lead powder having an oxidation degree of 70% and dilute sulfuric acid to obtain an active material paste, and then filled into a current collector. For the negative electrode, a small amount of carbon powder, lignin and barium compound were added to lead powder with an oxidation degree of 70%, kneaded with dilute sulfuric acid, and then filled into a current collector.

活物質ペーストを充填する際、ペースト紙の上に集電体を置き、その上から適度の圧力をかけながら充填した。充填後、上からペースト紙を置いた。充填時の圧力を調整することにより、集電体の下側にあるペースト紙を他方のペースト紙よりも薄くした。なお、本実施例ではペースト紙の厚みを充填時に調整したが、厚みの異なるペースト紙を使用しても何ら問題はない。
するためである。 When filling the active material paste, a current collector was placed on the paste paper, and filled while applying an appropriate pressure from above. After filling, paste paper was placed from above. By adjusting the pressure during filling, the paste paper on the lower side of the current collector was made thinner than the other paste paper. In this embodiment, the thickness of the paste paper is adjusted at the time of filling, but there is no problem even if paste paper having a different thickness is used.
It is to do.

Figure 2006269139
Figure 2006269139

これら捲回電極群の巻きずれの個数を確認した結果を図２に示す。Ｐ/Ｑが１.０以上、すなわち内側のペースト紙の厚みが外側のペースト紙よりも厚い場合、巻きずれした捲回群は多いが、Ｐ/Ｑが１．０未満になると巻きずれした捲回群の個数は減少する。さらには、内側のペースト紙の厚みを外側のペースト紙の厚みの０.７以下にすることで、巻きずれを防止することが可能となった。   The result of confirming the number of winding deviations of these wound electrode groups is shown in FIG. When P / Q is 1.0 or more, that is, when the thickness of the inner paste paper is thicker than that of the outer paste paper, there are many wound groups that have been wound, but when P / Q is less than 1.0, The number of rounds decreases. Furthermore, by making the thickness of the inner paste paper 0.7 or less of the thickness of the outer paste paper, it becomes possible to prevent winding deviation.

上記のように、正極板および負極板とがセパレータを介して捲回された電極群を持つ捲回形密閉式鉛蓄電池において、正極板および負極板ともに両面にペースト紙が貼り付けてあり、正極板および負極板それぞれにおいて、捲回時に内側になる面のペースト紙が、外側になる面のペースト紙よりも厚みを薄くすることで捲回時の巻きずれを防止することができる。ペースト紙の厚みの比率Ｐ／Ｑ（Ｐ：内側になるペースト紙の厚み、Ｑ：外側になるペースト紙の厚み）としては、０．１≦Ｐ／Ｑ≦０．７が適切な値である。   As described above, in a wound sealed lead-acid battery having an electrode group in which a positive electrode plate and a negative electrode plate are wound through a separator, both the positive electrode plate and the negative electrode plate are pasted with paste paper. In each of the plate and the negative electrode plate, the thickness of the paste paper on the inner side when winding is made thinner than the paste paper on the outer side of the plate, thereby preventing winding deviation during winding. 0.1 ≦ P / Q ≦ 0.7 is an appropriate value for the ratio P / Q of the thickness of the paste paper (P: the thickness of the paste paper on the inside, Q: the thickness of the paste paper on the outside). .

捲回電極群及び極板とペースト紙の配置を示す図である。It is a figure which shows arrangement | positioning of a winding electrode group, an electrode plate, and paste paper. ペースト紙の厚みの比率と巻きずれの関係を示す図である。It is a figure which shows the ratio of the thickness of a paste paper, and the relationship of winding deviation.

符号の説明Explanation of symbols

１ 捲回電極群
２ 極板
３ 内側になる面のペースト紙，
４ 外側になる面のペースト紙 1 wound electrode group 2 electrode plate 3 paste paper on the inner surface,
4 Paste paper on the outer side

Claims (3)

正極板および負極板とがセパレータを介して捲回された電極群を持つ捲回形密閉式鉛蓄電池において、正極板および負極板ともに両面にペースト紙が貼り付けてあり、正極板および負極板それぞれにおいて、捲回時に内側になる面のペースト紙が、外側になる面のペースト紙よりも厚みが薄いことを特徴とする捲回型密閉式鉛蓄電池。   In a wound sealed lead-acid battery having an electrode group in which a positive electrode plate and a negative electrode plate are wound through a separator, paste paper is pasted on both surfaces of the positive electrode plate and the negative electrode plate. The wound sealed lead-acid battery according to claim 1, wherein the paste paper on the inner surface when wound is thinner than the paste paper on the outer surface. 正極板および負極板とがセパレータを介して捲回された電極群を持つ捲回形密閉式鉛蓄電池において、正極板および負極板ともに両面にペースト紙が貼り付けてあり、正極板および負極板それぞれにおいて、捲回時に内側になる面のペースト紙が、外側になる面のペースト紙よりも厚みが薄いことを特徴とする捲回型密閉式鉛蓄電池の製造方法。   In a wound sealed lead-acid battery having an electrode group in which a positive electrode plate and a negative electrode plate are wound through a separator, paste paper is pasted on both surfaces of the positive electrode plate and the negative electrode plate. A method for manufacturing a wound type sealed lead-acid battery, wherein the paste paper on the inner surface when wound is thinner than the paste paper on the outer surface. 内側になるペースト紙の厚みＰと外側になるペースト紙の厚みＱの比Ｐ／Ｑが、０．１≦Ｐ／Ｑ≦０．７であることを特徴とする請求項１記載の捲回型密閉式鉛蓄電池   2. The wound mold according to claim 1, wherein the ratio P / Q of the thickness P of the paste paper on the inside and the thickness Q of the paste paper on the outside is 0.1 ≦ P / Q ≦ 0.7. Sealed lead acid battery
JP2005082953A 2005-03-23 2005-03-23 Winding type sealed lead-acid battery Expired - Fee Related JP4529750B2 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6177255A (en) * 1984-09-20 1986-04-19 Sanyo Electric Co Ltd Cylindrical alkaline zinc storage battery
JPH0412471A (en) * 1990-04-28 1992-01-17 Sony Corp Secondary battery
JPH06267535A (en) * 1993-03-10 1994-09-22 Toshiba Battery Co Ltd Hydrogen storage alloy electrode
JPH11214027A (en) * 1998-01-22 1999-08-06 Samsung Display Devices Co Ltd Secondary battery compensating capacity ratio of positive electrode and negative electrode
JP2002158030A (en) * 2000-11-22 2002-05-31 Japan Storage Battery Co Ltd Swirl-shaped electrode group, and manufacturing method of the same
JP2002260715A (en) * 2001-02-28 2002-09-13 Japan Storage Battery Co Ltd Cylindrical battery
JP2002260675A (en) * 2001-03-06 2002-09-13 Japan Storage Battery Co Ltd Cylindrical lead-acid battery
JP2004193116A (en) * 2002-11-29 2004-07-08 Sanyo Electric Co Ltd Nonaqueous electrolyte secondary battery

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6177255A (en) * 1984-09-20 1986-04-19 Sanyo Electric Co Ltd Cylindrical alkaline zinc storage battery
JPH0412471A (en) * 1990-04-28 1992-01-17 Sony Corp Secondary battery
JPH06267535A (en) * 1993-03-10 1994-09-22 Toshiba Battery Co Ltd Hydrogen storage alloy electrode
JPH11214027A (en) * 1998-01-22 1999-08-06 Samsung Display Devices Co Ltd Secondary battery compensating capacity ratio of positive electrode and negative electrode
JP2002158030A (en) * 2000-11-22 2002-05-31 Japan Storage Battery Co Ltd Swirl-shaped electrode group, and manufacturing method of the same
JP2002260715A (en) * 2001-02-28 2002-09-13 Japan Storage Battery Co Ltd Cylindrical battery
JP2002260675A (en) * 2001-03-06 2002-09-13 Japan Storage Battery Co Ltd Cylindrical lead-acid battery
JP2004193116A (en) * 2002-11-29 2004-07-08 Sanyo Electric Co Ltd Nonaqueous electrolyte secondary battery

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