JPH08287944A - Lead-acid battery - Google Patents
Lead-acid batteryInfo
- Publication number
- JPH08287944A JPH08287944A JP7092785A JP9278595A JPH08287944A JP H08287944 A JPH08287944 A JP H08287944A JP 7092785 A JP7092785 A JP 7092785A JP 9278595 A JP9278595 A JP 9278595A JP H08287944 A JPH08287944 A JP H08287944A
- Authority
- JP
- Japan
- Prior art keywords
- separator
- cathode plate
- rib
- separators
- electrode plate
- 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
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- Cell Separators (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は陰極板両面にセパレータ
を配した鉛蓄電池に関し、特にそのセパレータの改良に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead storage battery having separators on both sides of a cathode plate, and more particularly to improvement of the separator.
【０００２】[0002]
【従来の技術】従来、鉛蓄電池の内部短絡を防止し、充
放電サイクル寿命の向上を図るため、極板の側部、下部
を包み込むようにセパレータ側部、下部を溶着した袋状
セパレータが用いられている。このようなセパレータは
平状セパレータに比べて、極板下部、側部における短絡
は防止され寿命向上に効果がある。しかしセパレータを
袋状にすると、袋に収納された極板の充放電性能が低下
する。その理由は、セパレータが極板の側部、下部を包
み込むようにした構造であるため、充放電反応関与物質
である電解液中の硫酸イオンの拡散を阻害するためであ
る。上記問題を解決するために、特開平５−１４４４２
７号公報では、袋状セパレータの底部、側部にセパレー
タの未溶着部、つまり電解液の拡散を良好にするための
開口部を設けることを提案している。2. Description of the Related Art Conventionally, in order to prevent an internal short circuit of a lead storage battery and improve a charge / discharge cycle life, a bag-shaped separator in which a side portion and a lower portion of the electrode plate are wrapped and a side portion of the separator is welded is used. Has been. Such a separator is more effective than a flat separator in that the short circuit at the lower and side portions of the electrode plate is prevented and the life is improved. However, if the separator is formed in a bag shape, the charge / discharge performance of the electrode plate housed in the bag is deteriorated. The reason is that the separator has a structure that encloses the side portion and the lower portion of the electrode plate, and thus inhibits the diffusion of sulfate ions in the electrolyte solution that is a substance involved in the charge / discharge reaction. In order to solve the above problem, Japanese Patent Laid-Open No. 14442/1993
Japanese Patent Laid-Open No. 7-76 proposes to provide an unwelded portion of the separator, that is, an opening for improving diffusion of the electrolytic solution, on the bottom and side of the bag-shaped separator.
【０００３】[0003]
【発明が解決しようとする課題】しかし上述した技術を
適用しても、上記開口部においては短絡が発生する。そ
の理由は、以下の通りである。鉛蓄電池は、充電時酸素
ガス及び水素ガスが発生する。このとき、通常陰極容量
よりも陽極容量を小さくしているため、主に陽極から酸
素ガスが発生する。このようなガス発生は、電解液の攪
拌を促進する。この現象は一方では充放電反応関与物質
である硫酸イオンを電極／電解液界面に輸送する作用が
あり、利点と考えられている。しかし、他方では陽極板
からの活物質の遊離を促進する。遊離した陽極活物質は
被還元性微粒子（ＰｂＯ2等）が主成分であるため、負
の電位を示す陰極に沈着しやすい。沈着が進むと沈着物
はセパレータ端部を越えて陽極まで到達し、内部短絡を
起こす。また、発生する確率は小さいが、極板が露出し
ている部分、つまり耳部においては、内部抵抗が他の部
分よりも小さく電流が流れ易いため、上記電解液中に存
在する被還元性微粒子（ＰｂＯ2等）が陰極板上部にあ
る耳部に沈着し、それが上記セパレータの上端を越えて
積層されたとなり合う陽極板上部にまで到達することに
より内部短絡が発生してしまう場合がある。この内部短
絡は陽極耳部と、それととなり合う陰極上端部において
も起こり得るが、その頻度は陰極耳部とそれととなり合
う陽極上端部の方が高い。そこで本発明の第１の目的
は、極板下部、側部における内部短絡を抑制し、且つ、
電解液の拡散が良好である鉛蓄電池を提供することであ
る。また、本発明の第２の目的は、前記第１の目的を達
成し、且つ陰極板３耳部４と、それととなり合う陽極板
上端部における内部短絡を抑制することである。However, even if the above technique is applied, a short circuit occurs in the opening. The reason is as follows. A lead acid battery generates oxygen gas and hydrogen gas during charging. At this time, since the anode capacity is usually smaller than the cathode capacity, oxygen gas is mainly generated from the anode. Such gas generation promotes stirring of the electrolytic solution. On the other hand, this phenomenon has an action of transporting sulfate ions, which are substances involved in the charge / discharge reaction, to the electrode / electrolyte interface, and is considered an advantage. However, on the other hand, it promotes the release of the active material from the anode plate. Since the released anode active material is mainly composed of reducible fine particles (PbO 2 etc.), it is easily deposited on the cathode showing a negative potential. As the deposition progresses, the deposit reaches the anode beyond the end of the separator, causing an internal short circuit. In addition, although the probability of occurrence is small, in the portion where the electrode plate is exposed, that is, in the ear portion, the internal resistance is smaller than in other portions, and a current easily flows, so that the reducible fine particles present in the electrolytic solution are present. (PbO 2 etc.) may be deposited on the ears on the upper part of the cathode plate, and may reach the upper part of the adjacent anode plate stacked over the upper end of the separator to cause an internal short circuit. . This internal short circuit can occur in the anode ear and the cathode upper end that is adjacent to it, but the frequency is higher in the cathode ear and the anode upper end that is adjacent to it. Therefore, a first object of the present invention is to suppress an internal short circuit in the lower and side portions of the electrode plate, and
An object of the present invention is to provide a lead storage battery in which the diffusion of an electrolytic solution is good. A second object of the present invention is to achieve the above-mentioned first object and to suppress internal short circuit in the cathode plate 3 ears 4 and the upper end part of the anode plate which is adjacent thereto.
【０００４】[0004]
【課題を解決するための手段】上記第１の目的を達成す
るために、本発明に係る、陰極板３両面にセパレータ２
を配し、セパレータ２が陰極板３側部及び底部よりもは
み出ている構成の鉛蓄電池は、陰極板３両面に配された
セパレータ２の前記はみ出た部分には、陰極板３に面す
る側にそれぞれリブ１を少なくとも１本ずつ設け、且つ
リブ１はセパレータを陰極板両面に配した状態で以下の
条件を備えたことを特徴とする。 （１）一方のセパレータ２に設けられているリブ１の頂
部は、他方のセパレータ２及び当該他方のセパレータ２
のリブ１に接触しない。 （２）一方のセパレータ２に設けられているリブ１は、
その頂部が他方のセパレータ２に設けられているリブ１
の頂部の位置を越える高さを有する。 また本発明に係る、１枚のセパレータ２を中央でＵ字状
に折り曲げて陰極板３両面にセパレータ２を配した構成
とし、セパレータ２が陰極板３側部よりもはみ出ている
構成の鉛蓄電池は、陰極板３両面に配されたセパレータ
２の前記はみ出た部分には、陰極板３に面する側にそれ
ぞれリブ１を少なくとも１本ずつ設け、且つリブ１はセ
パレータ２を陰極板３両面に配した状態で以下の条件を
備えたことを特徴とする。 （１）一方のセパレータ２に設けられているリブ１の頂
部は、他方のセパレータ２及び当該他方のセパレータ２
のリブ１に接触しない。 （２）一方のセパレータ２に設けられているリブ１は、
その頂部が他方のセパレータ２に設けられているリブ１
の頂部の位置を越える高さを有する。 この時、上記構成に加え、陰極板３両面に配置されたセ
パレータ２の縁が不連続に接合されていてもよい。ま
た、上記第２の目的を達成するためには、上記構成に加
え陰極板３の耳部４におけるセパレータ２上端の位置
が、電解液面より上であることを特徴とする。In order to achieve the first object, the separator 2 according to the present invention is provided on both sides of the cathode plate 3.
And the separator 2 is arranged so that the separator 2 protrudes beyond the side and bottom of the cathode plate 3, and the protruding portion of the separator 2 arranged on both sides of the cathode plate 3 has a side facing the cathode plate 3. At least one rib 1 is provided for each of the two, and the rib 1 is characterized in that the following conditions are satisfied in a state where the separators are arranged on both surfaces of the cathode plate. (1) The top of the rib 1 provided on the one separator 2 is the other separator 2 and the other separator 2
Does not come into contact with rib 1. (2) The rib 1 provided on one of the separators 2 is
Rib 1 whose top is provided on the other separator 2
Has a height that exceeds the position of the top of the. Further, according to the present invention, a lead storage battery having a configuration in which one separator 2 is bent in a U shape at the center and the separators 2 are arranged on both surfaces of the cathode plate 3, and the separator 2 is protruded from the side of the cathode plate 3 At least one rib 1 is provided on each of the protruding portions of the separator 2 disposed on both sides of the cathode plate 3 on the side facing the cathode plate 3, and the rib 1 attaches the separator 2 to both sides of the cathode plate 3. It is characterized by having the following conditions in the arranged state. (1) The top of the rib 1 provided on the one separator 2 is the other separator 2 and the other separator 2
Does not come into contact with rib 1. (2) The rib 1 provided on one of the separators 2 is
Rib 1 whose top is provided on the other separator 2
Has a height that exceeds the position of the top of the. At this time, in addition to the above structure, the edges of the separators 2 arranged on both surfaces of the cathode plate 3 may be joined discontinuously. Further, in order to achieve the second object, in addition to the above configuration, the position of the upper end of the separator 2 in the ear portion 4 of the cathode plate 3 is above the electrolytic solution surface.
【０００５】[0005]
【作用】本発明の作用を以下に図を用いて説明する。極
板側部あるいは下部において、被還元性微粒子が陰極板
端部に到達することを抑制するには、図２のＡ−Ａ’断
面図である図１に示すように、陰極板３両面に配された
セパレータ２の前記はみ出た部分の陰極板３に面する側
にそれぞれリブ１を少なくとも１本ずつ設け、一方のセ
パレータ２に設けられているリブ１の頂部は、他方のセ
パレータ２及び当該他方のセパレータ２のリブ１に接触
せず、且つ一方のセパレータ２に設けられているリブ１
は、その頂部が他方のセパレータ２に設けられているリ
ブ１の頂部の位置を越える高さを有する構成にすればよ
い。その理由は、図１に示す２本のリブ１が、陽極板か
ら供給される被還元性微粒子が陰極板３に到達するまで
の経路を迷路状に長くする役割をすることができるため
である。また、図１の構造にすることにより、リブ１が
被還元性微粒子の陰極板３方向への侵入を妨げる作用を
有するとも考えられる。上記構成は、袋状セパレータの
ように、極板側部、下部を包み込むものではなく、極板
側部及び／または下部に前記迷路状の電解液が移動可能
な経路を有している。従って、電解液の拡散は良好であ
る。この時、上記構成に加えて例えば図６に示すよう
に、陰極板３両面に配置されたセパレータ２の縁が不連
続に接合部５を有していても、開口部６が存在するため
電解液の拡散は阻害されない。また、陰極板３耳部４と
それととなり合う陽極上端部における短絡を防止するに
は、陰極板３の耳部４におけるセパレータ２上端の位置
が、電解液面より上とすればよい。その理由は、被還元
性微粒子は、電解液中のみを移動するため、耳部を、セ
パレータ２によって覆うことにより被還元性微粒子の耳
部への沈着をセパレータ２によって妨害するためであ
る。The operation of the present invention will be described below with reference to the drawings. In order to prevent the reducible particles from reaching the end portion of the cathode plate at the side portion or the lower portion of the electrode plate, as shown in FIG. 1 which is a sectional view taken along the line AA ′ of FIG. At least one rib 1 is provided on each of the protruding portions of the arranged separator 2 on the side facing the cathode plate 3, and the top of the rib 1 provided on one separator 2 is the other separator 2 and Ribs 1 that do not contact the ribs 1 of the other separator 2 and that are provided on the one separator 2
May have a height whose top exceeds the position of the top of the rib 1 provided on the other separator 2. The reason is that the two ribs 1 shown in FIG. 1 can play a role of lengthening the path through which the reducible fine particles supplied from the anode plate reach the cathode plate 3 in a labyrinth. . Further, by adopting the structure shown in FIG. 1, it is considered that the rib 1 has a function of preventing the reducible particles from penetrating in the direction of the cathode plate 3. Unlike the bag-shaped separator, the above-mentioned configuration does not enclose the electrode plate side portion and the lower portion, but has a path through which the labyrinth-shaped electrolytic solution can move, on the electrode plate side portion and / or the lower portion. Therefore, the diffusion of the electrolytic solution is good. At this time, in addition to the above configuration, as shown in, for example, FIG. 6, even if the edges of the separators 2 arranged on both surfaces of the cathode plate 3 have the joint portions 5 discontinuously, the opening portion 6 exists, so that the electrolysis is performed. The diffusion of the liquid is not hindered. Further, in order to prevent a short circuit between the ears 4 of the cathode plate 3 and the upper end of the anode which is adjacent to the ears 4, the position of the upper end of the separator 2 in the ears 4 of the cathode plate 3 may be above the electrolyte surface. The reason for this is that the reducible particles move only in the electrolytic solution, and thus the separator 2 prevents the deposition of the reducible particles on the ears by covering the ears with the separator 2.
【０００６】[0006]
【実施例】本発明の一実施例を説明する。 （実施例１）まず、４６Ｂ２４型相当の陽極板、陰極板
を公知の方法により１枚ずつ作製した。この時の陰極板
の厚みは１．５ｍｍである。次に、多孔質ポリエチレン
樹脂からなるセパレータを成形、加工し、図３に示すよ
うに、陰極板３の耳部４を除いた極板サイズよりも縦方
向に８ｍｍ、幅方向に１２ｍｍ大きいセパレータ２を用
意した。このセパレータ２は、一方は図３（ａ）に示す
ように縁から２ｍｍ内側の側部と底部に、幅、高さがそ
れぞれ１ｍｍのリブ１を設けたものである。また他方
は、図３（ｂ）に示すように、縁から４ｍｍ内側の側部
と底部に、幅、高さがそれぞれ１ｍｍのリブ１を設けた
ものである。これら２枚のセパレータ２をリブ１を内側
にして陰極板３両面に、端をそろえて当接させた。その
状態の陰極板３の正面図を図２に示す。図２におけるＡ
−Ａ’断面図は図１のようになっていた。つまり、２本
のリブ１は互いに接触せず、一方のセパレータ２に配し
たリブ１の頂部は他方のセパレータ２にも接触していな
かった。上記作製した陽極板と、上記セパレータ２を当
接させた陰極板３を電槽に挿入し、比重１．２８０の硫
酸水溶液を電槽内に注入し、鉛蓄電池を作製した。この
とき、セパレータ２の上端は、電解液面より５ｍｍ下に
した。An embodiment of the present invention will be described. (Example 1) First, an anode plate and a cathode plate corresponding to 46B24 type were prepared one by one by a known method. The thickness of the cathode plate at this time is 1.5 mm. Next, a separator made of a porous polyethylene resin is molded and processed, and as shown in FIG. 3, a separator 2 which is 8 mm in the vertical direction and 12 mm in the width direction larger than the electrode plate size excluding the ears 4 of the cathode plate 3. Prepared. As shown in FIG. 3A, one of the separators 2 is provided with ribs 1 each having a width and a height of 1 mm on the side and the bottom 2 mm inside from the edge. On the other hand, as shown in FIG. 3 (b), ribs 1 each having a width and a height of 1 mm are provided on the side and bottom 4 mm inside from the edge. These two separators 2 were brought into contact with both surfaces of the cathode plate 3 with the ribs 1 inside, with their ends aligned. A front view of the cathode plate 3 in that state is shown in FIG. A in FIG.
The cross-sectional view taken along the line -A 'was as shown in FIG. That is, the two ribs 1 did not contact each other, and the tops of the ribs 1 arranged on one separator 2 did not contact the other separator 2. The prepared anode plate and the cathode plate 3 in contact with the separator 2 were inserted into a battery case, and a sulfuric acid aqueous solution having a specific gravity of 1.280 was injected into the battery container to manufacture a lead acid battery. At this time, the upper end of the separator 2 was 5 mm below the electrolytic solution surface.
【０００７】（実施例２）図４に示すように、陰極板３
の耳部４を覆う形状のセパレータ２を用いた以外は実施
例１と同条件でセパレータ及び鉛蓄電池を作製した。こ
の時の陰極板の耳部を覆うセパレータ２上端は、電解液
面より５ｍｍ高い位置にした。(Embodiment 2) As shown in FIG.
A separator and a lead storage battery were manufactured under the same conditions as in Example 1 except that the separator 2 having a shape covering the ear 4 was used. At this time, the upper end of the separator 2 that covers the ears of the cathode plate was set at a position 5 mm higher than the electrolyte surface.
【０００８】（従来例１）陰極板３の両面に、従来のポ
リエチレンからなるセパレータ２を配し、図５に示すよ
うにセパレータ２の側部及び底部を不連続に接合して、
未接合部を開口部６とした袋状セパレータを用いた以外
は、実施例１と同条件で鉛蓄電池を作製した。この開口
部６を有する袋状セパレータには、陰極板３のみを挿入
した。(Conventional Example 1) A separator 2 made of conventional polyethylene is arranged on both sides of a cathode plate 3, and the side and bottom of the separator 2 are discontinuously joined as shown in FIG.
A lead storage battery was produced under the same conditions as in Example 1 except that a bag-shaped separator having an opening 6 as an unbonded portion was used. Only the cathode plate 3 was inserted into the bag-shaped separator having the opening 6.
【０００９】（従来例２）従来のポリエチレンからなる
袋状セパレータを配した以外は、実施例１と同条件で鉛
蓄電池を作製した。この袋状セパレータには、陰極板の
みを挿入した。(Prior Art 2) A lead acid battery was prepared under the same conditions as in Example 1 except that a conventional bag-shaped separator made of polyethylene was arranged. Only the cathode plate was inserted into this bag-shaped separator.
【００１０】（従来例３）陰極板３の両面に従来のガラ
スマットからなる平状セパレータを配した以外は、実施
例１と同条件で鉛蓄電池を作製した。この平状セパレー
タのサイズは実施例と同じくし、これを陰極板と陽極板
の間に鋏んだ。(Conventional Example 3) A lead acid battery was manufactured under the same conditions as in Example 1 except that flat separators made of a conventional glass mat were arranged on both surfaces of the cathode plate 3. The size of this flat separator was the same as that of the example, and it was sandwiched between the cathode plate and the anode plate.
【００１１】上記５種類の鉛蓄電池を理論容量に対し１
３０％充電後、２０時間率で放電したときの放電持続時
間を測定した。さらにそれらの電池に対しＪＩＳ重負荷
寿命試験を行い、寿命までの充放電回数及び寿命原因を
解析した。この結果を表１に示す。The above-mentioned five types of lead-acid batteries are used with respect to the theoretical capacity of 1
After 30% charge, discharge duration was measured when discharged at a rate of 20 hours. Furthermore, a JIS heavy load life test was conducted on these batteries, and the number of times of charge / discharge until the life and the cause of the life were analyzed. Table 1 shows the results.
【００１２】[0012]
【表１】 [Table 1]
【００１３】表１の放電持続時間に着目すると、実施例
１、実施例２の電池は、平状セパレータを用いた従来例
３の電池と同等の特性が得られていることがわかる。こ
れは、充電時のガッシングによる電解液の攪拌が円滑に
行われ、電解液の成層化が防止され、放電反応に必要な
硫酸イオンが極板に均一に供給されたためである。それ
に対し、従来例２の電池は袋状セパレータを用いている
ために、充電時、電池内の電解液全体を攪拌するには至
らなかったためである。従来例１の電池は、開口部を設
けた袋状セパレータを用いているため、従来例２の電池
に比較し、電解液の拡散が良好だった。しかし、接合部
５を有さない実施例１、実施例２、従来例３の電池より
は電解液の拡散が多少劣ることがわかる。Focusing on the discharge duration in Table 1, it can be seen that the batteries of Examples 1 and 2 have characteristics equivalent to those of the battery of Conventional Example 3 using the flat separator. This is because the electrolyte solution was smoothly stirred by gassing during charging, the stratification of the electrolyte solution was prevented, and the sulfate ions necessary for the discharge reaction were uniformly supplied to the electrode plate. On the other hand, since the battery of Conventional Example 2 uses the bag-shaped separator, it was not possible to stir the entire electrolytic solution in the battery during charging. Since the battery of Conventional Example 1 uses the bag-shaped separator having the opening, the diffusion of the electrolytic solution was better than that of the battery of Conventional Example 2. However, it can be seen that the diffusion of the electrolytic solution is somewhat inferior to the batteries of Example 1, Example 2 and Conventional Example 3 having no joint portion 5.
【００１４】また、表１の重負荷寿命試験結果に着目す
ると、従来例３の電池は非常に短寿命だった。この理由
は、従来例３の電池が平状セパレータを用いているた
め、前述した被還元性微粒子が容易に陰極板３端部に沈
着し、陽極と接触して内部短絡を起こしたためだった。
従来例３の電池の場合は前記内部短絡は極板下部におい
て起こっていた。従来例３の電池の次に短寿命だったの
は従来例１の電池である。これは、開口部６を設けては
いるが、袋状のセパレータを用いた電池であるため従来
例３の電池よりは内部短絡が起こりにくく、長寿命とな
ったものと考えられる。しかしながら寿命に達した原因
は、開口部６から侵入した被還元性微粒子が陽極に達
し、内部短絡を起こしたためだった。従来例２の電池は
完全な袋状セパレータを用いているため、長寿命だっ
た。寿命に至った原因は、陰極板３耳部４に沈着した被
還元性微粒子が陽極板上端部に達し、内部短絡したもの
だった。この原因による内部短絡が従来例１、３の電池
でみられたような極板側部あるいは下部における内部短
絡よりも起こりにくい原因は、被還元性微粒子の比重が
電解液よりも大きいため、電池の下方に存在する確率が
高いためと考えられる。実施例１の電池も従来例２の電
池と同様に長寿命だった。寿命の原因も従来例２と同様
に、陰極板耳部に沈着した被還元性微粒子が陽極板上端
部に達することによる内部短絡だった。Also, paying attention to the results of the heavy load life test in Table 1, the battery of Conventional Example 3 had a very short life. The reason for this is that since the battery of Conventional Example 3 uses a flat separator, the above-mentioned reducible fine particles were easily deposited on the end of the cathode plate 3 and brought into contact with the anode to cause an internal short circuit.
In the case of the battery of Conventional Example 3, the internal short circuit occurred in the lower part of the electrode plate. The battery having the shortest life next to the battery of Conventional Example 3 is the battery of Conventional Example 1. It is considered that this is a battery using the bag-shaped separator, although the opening 6 is provided, so that an internal short circuit is less likely to occur than in the battery of Conventional Example 3 and the battery has a long life. However, the reason for reaching the end of life was that the reducible particles penetrating from the opening 6 reached the anode and caused an internal short circuit. The battery of Conventional Example 2 has a long life because it uses a perfect bag-shaped separator. The cause of reaching the end of life was that the reducible fine particles deposited on the ears 4 of the cathode plate 3 reached the upper end of the anode plate and were internally short-circuited. The reason why the internal short circuit due to this cause is less likely to occur than the internal short circuit at the side or lower part of the electrode plate as seen in the batteries of Conventional Examples 1 and 3 is that the specific gravity of the reducible fine particles is larger than that of the electrolytic solution. It is thought that this is because there is a high probability that it exists below. The battery of Example 1 also had a long life like the battery of Conventional Example 2. As in the case of Conventional Example 2, the cause of the life was an internal short circuit due to the reducible particles deposited on the ears of the cathode plate reaching the upper end of the anode plate.
【００１５】実施例２の電池は、実施例１、従来例２の
電池よりもさらに長寿命だった。これは被還元性微粒子
による内部短絡を完全に抑制できたためである。寿命に
至った原因は陽極活物質の脱落だった。The battery of Example 2 had a longer life than the batteries of Example 1 and Conventional Example 2. This is because the internal short circuit due to the reducible fine particles was completely suppressed. The cause of the end of life was the loss of the anode active material.
【００１６】以上の結果から、実施例１、２の電池のみ
が、極板下部、側部における内部短絡を抑制し、且つ、
電解液の拡散が良好である鉛蓄電池であることがわか
る。また、実施例２については、前記効果に加え、耳部
における内部短絡を抑制できることがわかった。From the above results, only the batteries of Examples 1 and 2 suppress the internal short circuit in the lower and side portions of the electrode plate, and
It can be seen that the lead storage battery has good diffusion of the electrolytic solution. In addition, it was found that in Example 2, in addition to the above-mentioned effects, internal short circuit in the ears can be suppressed.
【００１７】実施例１で用いたセパレータ２の構成を備
え、更に例えば図６に示すように、セパレータ２の側
部、下部の一部を溶着（接合）した場合、極板下部、側
部における内部短絡を抑制効果は、実施例１と同等だっ
た。また、表１における放電持続時間についても検討し
た結果、従来例１とほぼ同等の結果が得られた。従って
図６の構成にした場合でも前述した第１の目的を達成す
ることができた。また、図６の構成にした場合、セパレ
ータ２と陰極板３を一体にまとめることができるため、
その後の電池作製に際する作業性が向上した。The separator 2 used in Example 1 is provided, and when the side and bottom parts of the separator 2 are welded (joined) as shown in FIG. The effect of suppressing the internal short circuit was the same as in Example 1. Further, as a result of examining the discharge duration time in Table 1, results almost the same as those of Conventional Example 1 were obtained. Therefore, even when the configuration shown in FIG. 6 is used, the above-described first object can be achieved. Further, in the case of the configuration of FIG. 6, since the separator 2 and the cathode plate 3 can be integrated together,
The workability in the subsequent battery production was improved.
【００１８】実施例２における陰極板３の耳部４に位置
するセパレータ２上端を電解液面より高くするその他の
手段として、図７に示す構成が考えられる。これはセパ
レータ２上端部を、陰極板３耳部４方向に向かうに従い
直線的に高くなるよう構成したものである。この場合、
長尺のセパレータを連続的に裁断していく場合、裁断部
が直線であるため、特別な裁断用工具を必要としない利
点がある。前記利点を更に生かすには、セパレータ２の
上端全体を陰極板３上端に対し平行に、且つ電解液面よ
りも上にする構成も考えられる。しかし、この構成で
は、余分にセパレータを用いるという多少不利な点があ
る。これらのいずれの構成にしても電池性能としては前
述した第２の目的を達成することができる。図２におけ
る実施例１に用いたセパレータ２以外にも、図８に示す
セパレータ２を用いることが考えられる。これは、セパ
レータ２中央の折り返し線７からセパレータ２をリブ１
を内側にして折り返し、リブ１が配される面に陰極板３
をリブ１に接しないよう当接させる手段である。この場
合セパレータ２と陰極板３を当接させる際の作業性が向
上する。つまり、セパレータ２とリブ１と陰極板３との
位置関係を図１に示す状態に容易にできる。それは、折
り返し線７から正確に折り返す作業のみで前記構成が実
現できるためである。図８に示したセパレータ２で作製
した鉛蓄電池は、陰極板３下部にリブ１が配されていな
いため、表１における放電持続時間が実施例１、２より
も多少劣ったが、従来例１と同等のレベルだった。また
表１における寿命回数寿命原因については実施例１と同
等だった。従ってこの構成の電池は、前述した第１の目
的を達成することができる。本実施例では、リブ１をセ
パレータのはみ出し部分にそれぞれ１本設ける構成のみ
について言及してきたが、２本よりも多い構成でも構わ
ない。As another means for raising the upper end of the separator 2 located at the ear 4 of the cathode plate 3 in Example 2 above the electrolytic solution surface, the configuration shown in FIG. 7 can be considered. This is configured such that the upper end portion of the separator 2 linearly increases in the direction of the cathode plate 3 and the ear portion 4. in this case,
When continuously cutting a long separator, there is an advantage that no special cutting tool is required because the cutting portion is straight. In order to make full use of the above advantages, it is possible to consider a configuration in which the entire upper end of the separator 2 is parallel to the upper end of the cathode plate 3 and above the electrolytic solution surface. However, this configuration has some disadvantages in that an extra separator is used. With any of these configurations, the second object described above can be achieved in terms of battery performance. It is possible to use the separator 2 shown in FIG. 8 in addition to the separator 2 used in Example 1 in FIG. This is because the separator 2 is ribbed from the folding line 7 at the center of the separator 2.
The inner side of the cathode plate 3 and fold it back, and place the cathode plate 3 on the surface on which the rib 1 is arranged.
Is a means for abutting against the rib 1 so as not to come into contact therewith. In this case, workability when the separator 2 and the cathode plate 3 are brought into contact with each other is improved. That is, the positional relationship among the separator 2, the rib 1 and the cathode plate 3 can be easily made into the state shown in FIG. This is because the above configuration can be realized only by the work of accurately folding back from the folding line 7. In the lead acid battery prepared with the separator 2 shown in FIG. 8, since the rib 1 is not arranged below the cathode plate 3, the discharge duration time in Table 1 was slightly inferior to that in Examples 1 and 2, but the conventional example 1 It was the same level as. The cause of the number of times of life in Table 1 was the same as in Example 1. Therefore, the battery having this configuration can achieve the above-mentioned first object. Although only one rib 1 is provided in each protruding portion of the separator in this embodiment, the number of ribs may be more than two.
【００１９】[0019]
【発明の効果】上述ように、本発明により、極板下部、
側部における内部短絡を抑制し、且つ、電解液の拡散が
良好である鉛蓄電池を提供することができた。また、さ
らに耳部における内部短絡をも抑制することができた。As described above, according to the present invention, the lower electrode plate,
It was possible to provide a lead storage battery that suppresses internal short-circuiting in the side portion and that has good diffusion of the electrolytic solution. Further, it was possible to further suppress an internal short circuit in the ear.
【図１】図２におけるＡ−Ａ’断面図である。FIG. 1 is a cross-sectional view taken along the line A-A ′ in FIG.
【図２】実施例１で用いたセパレータに極板を収納した
状態の正面図である。FIG. 2 is a front view showing a state in which an electrode plate is housed in the separator used in Example 1.
【図３】実施例１で用いたセパレータの展開正面図であ
る。FIG. 3 is a developed front view of the separator used in Example 1.
【図４】実施例２で用いたセパレータに極板を収納した
状態の正面図である。FIG. 4 is a front view of a separator used in Example 2 in which an electrode plate is housed.
【図５】従来例１の袋状セパレータに極板を収納した状
態の正面図である。FIG. 5 is a front view showing a state where an electrode plate is housed in the bag-shaped separator of Conventional Example 1.
【図６】本発明に係る他の実施例においてセパレータに
極板を収納した状態の正面図である。FIG. 6 is a front view showing a state in which an electrode plate is housed in a separator according to another embodiment of the present invention.
【図７】本発明に係るさらに他の実施例においてセパレ
ータに極板を収納した状態の正面図である。FIG. 7 is a front view showing a state in which an electrode plate is housed in a separator according to still another embodiment of the present invention.
【図８】本発明に係る別の実施例で用いたセパレータの
展開正面図である。FIG. 8 is a developed front view of a separator used in another example according to the present invention.
１．リブ ２．セパレータ ３．陰極板 ４．耳部 ５．接合部 ６．開口部 ７．折り返し線 1. Ribs 2. Separator 3. Cathode plate 4. Ear 5. Joining part 6. Opening 7. Fold line
Claims (4)
レータが陰極板側部及び底部よりもはみ出ている構成の
鉛蓄電池において、 前記陰極板両面に配されたセパレータの前記はみ出た部
分には、陰極板に面する側にそれぞれリブを少なくとも
１本ずつ設け、且つ前記リブはセパレータを陰極板両面
に配した状態で以下の条件を備えたことを特徴とする鉛
蓄電池。 （１）一方のセパレータに設けられているリブの頂部
は、他方のセパレータ及び当該他方のセパレータのリブ
に接触しない。 （２）一方のセパレータに設けられているリブは、その
頂部が他方のセパレータに設けられているリブの頂部の
位置を越える高さを有する。1. A lead-acid battery having a structure in which separators are arranged on both sides of the cathode plate, and the separator protrudes from the side and the bottom of the cathode plate, wherein the protruding parts of the separators arranged on both sides of the cathode plate are A lead storage battery, wherein at least one rib is provided on each side facing the cathode plate, and the ribs satisfy the following conditions in a state where separators are arranged on both sides of the cathode plate. (1) The tops of the ribs provided on one separator do not contact the ribs on the other separator and the other separator. (2) The rib provided on one of the separators has a height such that the top thereof exceeds the position of the top of the rib provided on the other separator.
げて陰極板両面にセパレータを配した構成とし、当該セ
パレータが陰極板側部よりもはみ出ている構成の鉛蓄電
池において、 前記陰極板両面に配されたセパレータの前記はみ出た部
分には、陰極板に面する側にそれぞれリブを少なくとも
１本ずつ設け、且つ前記リブはセパレータを陰極板両面
に配した状態で以下の条件を備えたことを特徴とする鉛
蓄電池。 （１）一方のセパレータに設けられているリブの頂部
は、他方のセパレータ及び当該他方のセパレータのリブ
に接触しない。 （２）一方のセパレータに設けられているリブは、その
頂部が他方のセパレータに設けられているリブの頂部の
位置を越える高さを有する。2. A lead storage battery having a structure in which one separator is bent in a U-shape at the center to dispose the separators on both sides of the cathode plate, and the separator protrudes from the side of the cathode plate. At least one rib is provided on each of the protruding portions of the separators disposed on both sides on the side facing the cathode plate, and the ribs satisfy the following conditions in a state where the separators are disposed on both sides of the cathode plate. Lead acid battery characterized by the following. (1) The tops of the ribs provided on one separator do not contact the ribs on the other separator and the other separator. (2) The rib provided on one of the separators has a height such that the top thereof exceeds the position of the top of the rib provided on the other separator.
不連続に接合されている請求項１または２に記載の鉛蓄
電池。3. The lead storage battery according to claim 1, wherein the edges of the separators arranged on both sides of the cathode plate are joined discontinuously.
置が、電解液面より上であることを特徴とする請求項１
〜３のいずれかに記載の鉛蓄電池。4. The position of the upper end of the separator at the ear of the cathode plate is above the surface of the electrolytic solution.
The lead acid battery according to any one of 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7092785A JPH08287944A (en) | 1995-04-18 | 1995-04-18 | Lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7092785A JPH08287944A (en) | 1995-04-18 | 1995-04-18 | Lead-acid battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08287944A true JPH08287944A (en) | 1996-11-01 |
Family
ID=14064083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7092785A Pending JPH08287944A (en) | 1995-04-18 | 1995-04-18 | Lead-acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08287944A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0935299A1 (en) * | 1998-02-05 | 1999-08-11 | VHB Industriebatterien GmbH | Electrode plates separator assembly for a lead accumulator |
| JP2010160956A (en) * | 2009-01-08 | 2010-07-22 | Panasonic Corp | Lead storage battery |
| CN102136564A (en) * | 2010-01-27 | 2011-07-27 | Sb锂摩托有限公司 | Secondary battery having insulation bag |
| WO2011096334A1 (en) * | 2010-02-05 | 2011-08-11 | Ｎｅｃエナジーデバイス株式会社 | Laminated secondary battery |
| JP2013235664A (en) * | 2012-05-07 | 2013-11-21 | Toyota Industries Corp | Power storage device |
| JP2015531534A (en) * | 2012-09-11 | 2015-11-02 | ルートジェイド インコーポレイテッド | Separation membrane for secondary battery electrode assembly and secondary battery including the same |
| RU169218U1 (en) * | 2016-05-16 | 2017-03-13 | Федеральное государственное казенное военное образовательное учреждение высшего профессионального образования Рязанское высшее воздушно-десантное командное училище (военный институт) имени генерала армии В.Ф. Маргелова МО РФ | Lead battery |
| WO2022181794A1 (en) * | 2021-02-26 | 2022-09-01 | エナジーウィズ株式会社 | Electrode plate group for batteries, storage battery, battery pack, electric vehicle, separator for batteries, method for producing separator for batteries, and method for producing electrode plate group for batteries |
-
1995
- 1995-04-18 JP JP7092785A patent/JPH08287944A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0935299A1 (en) * | 1998-02-05 | 1999-08-11 | VHB Industriebatterien GmbH | Electrode plates separator assembly for a lead accumulator |
| JP2010160956A (en) * | 2009-01-08 | 2010-07-22 | Panasonic Corp | Lead storage battery |
| CN102136564A (en) * | 2010-01-27 | 2011-07-27 | Sb锂摩托有限公司 | Secondary battery having insulation bag |
| JP2011155001A (en) * | 2010-01-27 | 2011-08-11 | Sb Limotive Co Ltd | Secondary battery |
| US9196886B2 (en) | 2010-01-27 | 2015-11-24 | Samsung Sdi Co., Ltd. | Secondary battery having insulation bag |
| CN102742061A (en) * | 2010-02-05 | 2012-10-17 | Nec能源元器件株式会社 | Laminated secondary battery |
| JP2011165352A (en) * | 2010-02-05 | 2011-08-25 | Nec Energy Devices Ltd | Laminated secondary battery |
| EP2533341A1 (en) * | 2010-02-05 | 2012-12-12 | NEC Energy Devices, Ltd. | Laminated secondary battery |
| EP2533341A4 (en) * | 2010-02-05 | 2014-04-23 | Nec Energy Devices Ltd | Laminated secondary battery |
| WO2011096334A1 (en) * | 2010-02-05 | 2011-08-11 | Ｎｅｃエナジーデバイス株式会社 | Laminated secondary battery |
| JP2013235664A (en) * | 2012-05-07 | 2013-11-21 | Toyota Industries Corp | Power storage device |
| JP2015531534A (en) * | 2012-09-11 | 2015-11-02 | ルートジェイド インコーポレイテッド | Separation membrane for secondary battery electrode assembly and secondary battery including the same |
| RU169218U1 (en) * | 2016-05-16 | 2017-03-13 | Федеральное государственное казенное военное образовательное учреждение высшего профессионального образования Рязанское высшее воздушно-десантное командное училище (военный институт) имени генерала армии В.Ф. Маргелова МО РФ | Lead battery |
| WO2022181794A1 (en) * | 2021-02-26 | 2022-09-01 | エナジーウィズ株式会社 | Electrode plate group for batteries, storage battery, battery pack, electric vehicle, separator for batteries, method for producing separator for batteries, and method for producing electrode plate group for batteries |
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