JP2002033115A - Sealed lead-acid battery - Google Patents
Sealed lead-acid batteryInfo
- Publication number
- JP2002033115A JP2002033115A JP2000214060A JP2000214060A JP2002033115A JP 2002033115 A JP2002033115 A JP 2002033115A JP 2000214060 A JP2000214060 A JP 2000214060A JP 2000214060 A JP2000214060 A JP 2000214060A JP 2002033115 A JP2002033115 A JP 2002033115A
- Authority
- JP
- Japan
- Prior art keywords
- sealed lead
- acid battery
- battery
- foam
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はシール形鉛蓄電池に
関するものである。The present invention relates to a sealed lead-acid battery.
【０００２】[0002]
【従来の技術】シール形鉛蓄電池は正極板，負極板およ
びセパレータを備えており、特にマットセパレータに電
解液を含浸させた構成を有するシール形鉛蓄電池はマッ
トセパレータと極板との密着性を保つために極板群を積
層方向に圧力、つまり群圧をかけることが必要である。
そして群圧が低下した場合は、シール形鉛蓄電池の容量
低下や寿命低下を引き起こすことになる。2. Description of the Related Art A sealed lead-acid battery is provided with a positive electrode plate, a negative electrode plate and a separator. In particular, a sealed lead-acid battery having a structure in which a mat separator is impregnated with an electrolytic solution has improved adhesion between the mat separator and the electrode plate. In order to maintain the pressure, it is necessary to apply a pressure to the electrode group in the stacking direction, that is, a group pressure.
When the group pressure decreases, the capacity and life of the sealed lead-acid battery decrease.
【０００３】このような群圧は通常、極板群の積層方向
の厚みに対して電槽内壁間の寸法を小さく設定すること
により、極板群に印加される。[0003] Such a group pressure is usually applied to the electrode group by setting the dimension between the inner walls of the battery case smaller than the thickness of the electrode group in the laminating direction.
【０００４】一方、シール形鉛蓄電池の中でも特に大型
の産業用電池に関しては数種類の異なった容量の電池で
も、同一の電槽を共用することが行われている。このよ
うな場合、電池容量により極板群の厚みがそれぞれ異な
り、極板群をそのまま電槽に収納しただけでは電池容量
によっては極板群と電槽内壁との間に隙間が発生し、極
板群に群圧をかけることができない。[0004] On the other hand, among the sealed type lead-acid batteries, especially for large industrial batteries, the same battery case is commonly used for several types of batteries having different capacities. In such a case, the thickness of the electrode group differs depending on the battery capacity, and if the electrode group is simply stored in the battery case as it is, a gap is generated between the electrode group and the inner wall of the battery case depending on the battery capacity. Group pressure cannot be applied to the plate group.
【０００５】そこで、従来は様々な厚みを有する極板群
を電槽に収納する際に、極板群厚みと電槽内壁間の寸法
を調整する目的で板状のスペーサーを用いてきた。Therefore, conventionally, when accommodating electrode plates having various thicknesses in a battery case, a plate-shaped spacer has been used for the purpose of adjusting the thickness of the electrode plate group and the dimension between the inner walls of the battery case.
【０００６】このようなスペーサーとしては、例えば特
開平６−２４３８８９号公報には合成樹脂の発泡材のス
ペーサーを用いることが記載されている。As such a spacer, for example, JP-A-6-243889 discloses that a spacer made of a synthetic resin foam material is used.
【０００７】このスペーサーは極板群圧を長期間、例え
ば産業用シール形鉛蓄電池では１０年以上保持する必要
があることから、厚み方向の圧縮強度も高いものを用い
る必要がある。例えば特開平６−２４３８８９号公報に
記載されたようにスペーサーの材質として発泡ウレタン
や発泡スチロールを用いる場合には強度を確保するため
に低発泡倍率、例えば１２倍程度の発泡倍率のものを用
いる必要がある。Since the spacer needs to maintain the electrode group pressure for a long period of time, for example, 10 years or more in an industrial sealed lead-acid battery, it is necessary to use a spacer having a high compressive strength in the thickness direction. For example, as described in JP-A-6-243889, when urethane foam or styrene foam is used as the material of the spacer, it is necessary to use a foam having a low expansion ratio, for example, about 12 times, in order to secure strength. is there.
【０００８】ところがこのような低発泡倍率の発泡体を
用いる場合は、発泡材の所要量が多くなり、結局スペー
サー自体が高価になるという欠点を有している。However, when such a foam having a low expansion ratio is used, there is a disadvantage that the required amount of the foaming material is increased and the spacer itself becomes expensive.
【０００９】一方、発泡倍率が３０倍程度以上の比較的
高発泡倍率の発泡材を用いる場合には発泡材の所要量は
低発泡倍率のものに比較して少なくて済むものの、極板
群圧を長期間にわたって保持しうる強度を有していない
という課題があった。On the other hand, when a foaming material having a relatively high foaming ratio of about 30 times or more is used, the required amount of foaming material is smaller than that of a low foaming ratio, but the electrode plate group pressure is reduced. However, there is a problem that it does not have a strength capable of maintaining the long term.
【００１０】[0010]
【発明が解決しようとする課題】本発明は前記したよう
にシール形鉛蓄電池の電槽内部に収納されて極板群圧を
維持する機能を有する間隔保持部材において安価で極板
群圧の維持能力に優れた構成を得ることを目的とする。SUMMARY OF THE INVENTION As described above, the present invention provides an inexpensive spacing electrode member which is housed inside a battery case of a sealed type lead-acid battery and has a function of maintaining the electrode plate group pressure. The purpose is to obtain a configuration with excellent capabilities.
【００１１】[0011]
【課題を解決するための手段】前記した課題を解決する
ために、本発明の請求項１に記載の発明は正極板および
負極板がセパレータを介して積層された極板群を電槽に
収納したシール形鉛蓄電池であって、前記極板群の積層
方向の少なくとも一端と前記電槽内壁との間に一面また
は両面が開口した箱状の間隔保持部材を備え、前記間隔
保持部材に発泡樹脂からなる発泡部材を配設したシール
形鉛蓄電池としたものである。According to a first aspect of the present invention, there is provided an electrode assembly comprising a positive electrode plate and a negative electrode plate laminated via a separator in a battery case. A sealed lead-acid battery, comprising: a box-shaped spacing member having one or both sides opened between at least one end of the electrode group in the stacking direction and the inner wall of the battery case; This is a sealed lead-acid battery provided with a foam member made of:
【００１２】また、本発明の請求項２に記載の発明は請
求項１に記載した構成を有するシール形鉛蓄電池におい
て、間隔保持部材はその内側に設けられた隔壁によって
小室に区画され、これら各小室に発泡部材を配設させる
こととしたものである。According to a second aspect of the present invention, in the sealed lead-acid battery having the configuration described in the first aspect, the spacing member is divided into small chambers by partitions provided inside the battery. A foam member is provided in the small chamber.
【００１３】また、本発明の請求項３に記載の発明は請
求項１もしくは２のいずれかの項に記載した構成を有す
るシール形鉛蓄電池において、間隔保持部材の開口部を
電槽内壁に対向させる構成としたものである。According to a third aspect of the present invention, there is provided a sealed lead-acid battery having the configuration according to any one of the first and second aspects, wherein the opening of the spacing member is opposed to the inner wall of the battery case. This is a configuration to make it.
【００１４】また、本発明の請求項４に記載の発明は請
求項１ないし３のいずれかの項に記載した構成を有する
シール形鉛蓄電池において、発泡部材として独立気泡を
有していて、発泡倍率が３０倍以上のものを用いること
としたものである。According to a fourth aspect of the present invention, there is provided a sealed lead-acid battery having the configuration according to any one of the first to third aspects, wherein the sealed lead-acid battery has closed cells as a foaming member. The magnification is 30 times or more.
【００１５】また、本発明の請求項５に記載の発明は請
求項１ないし４のいずれかの項に記載したシール形鉛蓄
電池において、発泡部材として発泡スチロールを用いる
こととしたものである。According to a fifth aspect of the present invention, in the sealed lead-acid battery according to any one of the first to fourth aspects, styrene foam is used as a foaming member.
【００１６】また、本発明の請求項６に記載の発明は、
請求項１ないし５のいずれかの項に記載した構成のシー
ル形鉛蓄電池において、間隔保持部材の複数を嵌合一体
化した組合せ間隔保持部材を備えた構成としたものであ
る。The invention according to claim 6 of the present invention provides:
The sealed lead-acid battery according to any one of claims 1 to 5, further comprising a combination spacing member in which a plurality of spacing members are fitted and integrated.
【００１７】[0017]
【発明の実施の形態】本発明の実施の形態について図面
を用いて説明する。Embodiments of the present invention will be described with reference to the drawings.
【００１８】図１は本発明の一実施の形態におけるシー
ル形鉛蓄電池の断面を示す図である。FIG. 1 is a view showing a cross section of a sealed lead-acid battery according to an embodiment of the present invention.
【００１９】正極板１と負極板２とがガラスマットセパ
レータ３を介して積層されて極板群４を構成し、この極
板群４は電槽５に収納されている。極板群４の積層方向
の端部には間隔保持部材６が挿入された構成である。The positive electrode plate 1 and the negative electrode plate 2 are laminated via a glass mat separator 3 to form an electrode plate group 4, which is housed in a battery case 5. The spacing member 6 is inserted at the end of the electrode plate group 4 in the stacking direction.
【００２０】図２は前記図１に示したシール形鉛蓄電池
に用いる間隔保持部材６を示す斜視図である。FIG. 2 is a perspective view showing the spacing member 6 used in the sealed lead-acid battery shown in FIG.
【００２１】間隔保持部材６は一面が開口した箱状部材
７に発泡スチロール等の発泡部材８がはめ込まれた構成
である。ここで箱状部材７はＡＢＳ樹脂やＰＰ樹脂等の
耐酸性の樹脂を用いて構成する。箱状部材７は底壁７−
１の周囲に側壁７−２を設けている。間隔保持部材６を
電槽５内に収納した状態では発泡部材８が電槽５の内壁
側に対向するようにする。The spacing member 6 has a structure in which a foam member 8 such as styrene foam is fitted into a box-like member 7 having an open surface. Here, the box-shaped member 7 is formed using an acid-resistant resin such as an ABS resin or a PP resin. The box-shaped member 7 has a bottom wall 7-
1 is provided around the side wall 7-2. When the spacing member 6 is housed in the battery case 5, the foam member 8 is made to face the inner wall of the battery case 5.
【００２２】このような構成により箱状部材７に設けた
底壁７−１により極板群の全面もしくは大部分の面に安
定した極板群圧をかけることができる。また側壁７−２
が底壁７−１の支柱となるので発泡部材８には殆ど圧縮
力がかからず、結果として発泡部材８は従来使用してい
た発泡部材より高い発泡倍率のものを使用することがで
きる。With this configuration, a stable electrode group pressure can be applied to the entire or most of the electrode group by the bottom wall 7-1 provided on the box-shaped member 7. The side wall 7-2
Is used as a support for the bottom wall 7-1. Therefore, a compressive force is hardly applied to the foamed member 8, and as a result, a foamed member having a higher expansion ratio than a conventionally used foamed member can be used.
【００２３】また、箱状部材７にはその内部を小室７−
３に区画する隔壁７−４を設けることが好ましい。この
ような構成によれば隔壁７−４が側壁７−２とともに安
定して底壁７−１を支持し、均一な極板群圧を与えるこ
とができる。The box-shaped member 7 has a small chamber 7-
It is preferable to provide a partition 7-4 for partitioning into three. According to such a configuration, the partition wall 7-4 can stably support the bottom wall 7-1 together with the side wall 7-2, and can provide a uniform electrode plate group pressure.
【００２４】なお、図２の（ａ）に示したように発泡部
材８を小室７−３に装入し、全ての小室７−３に発泡部
材８を配設した間隔保持部材６は図２の（ｂ）に示した
構成となる。As shown in FIG. 2A, the spacing member 6 in which the foam member 8 is inserted into the small chambers 7-3 and the foam members 8 are disposed in all the small chambers 7-3 is shown in FIG. The configuration shown in FIG.
【００２５】また、図３の（ａ）に示すように間隔保持
部材６の複数個（図３の例では２個）を嵌合して一体と
し、図３の（ａ）に示したように組合せ間隔保持部材６
Ａを構成することができる。ここでは側壁７−２の一つ
に嵌合用の凹部９と凸部１０を設け、互いにこれらの凹
部９と凸部１０が他の間隔保持部材６に設けた凹部９と
凸部１０に嵌合する構成を採用することができる。この
ような構成とすることにより、極板面積が異なる他の極
板群にも共通して同一の間隔保持部材６を使用すること
ができる。Further, as shown in FIG. 3A, a plurality of (two in the example of FIG. 3) spacing members 6 are fitted together to form an integral body, and as shown in FIG. Combination interval holding member 6
A can be configured. Here, a concave portion 9 and a convex portion 10 for fitting are provided on one of the side walls 7-2, and the concave portion 9 and the convex portion 10 are fitted with the concave portion 9 and the convex portion 10 provided on the other spacing member 6. The following configuration can be adopted. With such a configuration, the same spacing member 6 can be used in common for other electrode groups having different electrode plate areas.
【００２６】発泡部材８としてはなるべく高発泡倍率の
ものを用いることが価格面で好ましい。従来の発泡部材
は発泡スチロールの場合、発泡倍率が１２倍程度のもの
を使用していた。従来のように発泡部材単独で間隔保持
部材を構成する場合、発泡スチロールの場合で発泡倍率
が３０倍にまで高くなると群圧により間隔保持部材が容
易に圧縮変形を受けていたが、本発明の構成によればこ
のような強度の弱い発泡部材を使用しても極板群圧に耐
える間隔保持部材を構成することができる。また、発泡
倍率が高くなれば発泡部材の空孔率は高く、例えば発泡
倍率が３０倍の場合は元の体積の３０倍に発泡するた
め、空孔率＝｛（３０（発泡後の体積）−１（元体
積））／３０（発泡後の体積）｝×１００＝９６．６％
となり、結果として発泡部材の所要量を削減することが
できるので安価に間隔保持部材を構成することができ
る。It is preferable in terms of cost to use a foaming member having a high expansion ratio as much as possible. In the case of a conventional styrofoam member, a foam member having an expansion ratio of about 12 times has been used. When the spacing member is constituted by the foam member alone as in the related art, the spacing member is easily subjected to compressive deformation by the group pressure when the expansion ratio is increased to 30 in the case of styrene foam. According to this, even if such a low-strength foam member is used, it is possible to form a spacing member that can withstand the electrode plate group pressure. Further, the porosity of the foamed member is high when the foaming ratio is high. For example, when the foaming ratio is 30 times, the foamed material is foamed to 30 times the original volume, so that the porosity = ｛(30 (volume after foaming) −1 (original volume)) / 30 (volume after foaming)｝ × 100 = 96.6%
As a result, the required amount of the foam member can be reduced, so that the space holding member can be configured at low cost.
【００２７】また、発泡部材８は独立気泡を有するもの
を用いることが好ましい。独立発泡ではなく、連続気泡
を有する発泡部材を用いた場合には電解液が発泡部材に
浸透するため、余分の電解液量が必要となるためであ
る。It is preferable to use a foamed member having closed cells. This is because, when a foamed member having open cells is used instead of closed foaming, an electrolytic solution permeates the foamed member, so that an extra amount of the electrolytic solution is required.
【００２８】なお、図１には極板群４の両端に間隔保持
部材６を設ける構成の例を示したが必要に応じて極板群
の一端にのみ設けることももちろん可能である。Although FIG. 1 shows an example of a structure in which the spacing members 6 are provided at both ends of the electrode group 4, it is of course possible to provide them only at one end of the electrode group if necessary.
【００２９】また、箱状部材７としては耐酸性を有し、
成型性が良好であれば特に制限はなく、ポリプロピレン
樹脂，ポリエチレン樹脂，塩化ビニル樹脂，アクリロニ
トリル・ブタジエン・スチレン共重合体等の樹脂を用い
ることができる。The box-shaped member 7 has acid resistance,
There is no particular limitation as long as the moldability is good, and resins such as polypropylene resin, polyethylene resin, vinyl chloride resin and acrylonitrile-butadiene-styrene copolymer can be used.
【００３０】[0030]
【実施例】以下の，，に示す本発明によるシール
形鉛蓄電池と従来例ならびに比較例によるシール形鉛蓄
電池をそれぞれ作製し、放置試験を行った。EXAMPLES Sealed lead-acid batteries according to the present invention and sealed lead-acid batteries according to the prior art and comparative examples shown below are manufactured and subjected to a standing test.
【００３１】本発明例の電池Ａ 前記した本発明の実施の形態に従って２Ｖ１００Ａｈの
本発明例の電池Ａを作製した。間隔保持部材６は極板群
４の片側の端に挿入されている。なお、発泡部材８とし
て発泡倍率が６０倍の独立気泡を有する発泡スチロール
を使用した。箱状部材としてはポリプロピレン樹脂を用
いた。Battery A of Inventive Example In accordance with the above-described embodiment of the present invention, a battery A of 2V100Ah of the present invention example was produced. The spacing member 6 is inserted into one end of the electrode group 4. Note that, as the foaming member 8, styrene foam having closed cells with a foaming ratio of 60 times was used. A polypropylene resin was used as the box-shaped member.
【００３２】従来例の電池Ｂ 本発明例の電池Ａで用いた正極板，負極板およびセパレ
ータで極板群を構成し本発明例の電池Ａと同じ電槽に収
納した。極板群の片側の端と電槽内壁との間に独立気泡
を有し発泡倍率が１２倍の発泡スチロールの板を間隔保
持部材として挿入した。Conventional Battery B A positive electrode plate, a negative electrode plate and a separator used in the battery A of the present invention were used to form an electrode plate group, which was housed in the same battery case as the battery A of the present invention. A styrene foam plate having closed cells and having a foaming ratio of 12 times was inserted as a spacing member between one end of the electrode plate group and the inner wall of the battery case.
【００３３】比較例の電池Ｃ 従来例の電池Ｂで用いた間隔保持部材と同様の構成で独
立気泡を有するものの、発泡倍率が６０倍の発泡スチロ
ールの板を間隔保持部材として挿入した。Battery C of Comparative Example A styrene foam plate having the same structure as the spacing member used in the conventional battery B but having closed cells but having an expansion ratio of 60 was inserted as the spacing member.
【００３４】本発明の電池Ａ，従来例の電池Ｂおよび比
較例の電池Ｃともに化成充電が終了した時点での極板群
圧が２４５００Ｎ／ｍ2（２５ｋｇｆ／ｄｍ2）となるよ
うに間隔保持部材の厚みを調整した。また、これらの電
池Ａ，Ｂ，Ｃには全て極板群と間隔保持部材との間に圧
力センサーを挿入し、極板群圧を常に測定できるよう電
池を構成した。In the battery A of the present invention, the battery B of the conventional example, and the battery C of the comparative example, the interval was maintained such that the electrode plate group pressure at the time of completion of the formation charge was 24500 N / m 2 (25 kgf / dm 2 ). The thickness of the member was adjusted. A pressure sensor was inserted between each of the batteries A, B, and C between the electrode group and the spacing member so that the electrode group pressure could always be measured.
【００３５】これら電池Ａ，Ｂ，Ｃについて充電状態で
４０℃の雰囲気中に３ヶ月間放置した後の極板群圧値と
残存放電容量そして回復充電後の回復充電容量を測定し
た。放電条件は電池を２５℃の雰囲気下に放置した後、
２５Ａ定電流放電を放電終止電圧１．７５Ｖまで行う残
存放電容量試験を行った。回復充電については２５Ａ定
電流放電終了後、２．４５Ｖ定電圧充電（最大電流５０
Ａ）で１２時間充電を行った。その後、回復容量試験を
残存放電容量試験と同じ条件で行った。その結果を図４
に示す。図４に示した結果から本発明例の電池Ａは従来
例の電池Ｂに比較して残存容量特性および回復容量特性
において何れも優れており、群圧値も従来例の電池Ｂは
若干の低下が見られるものの、本発明例の電池Ａでは殆
ど群圧値の低下は認められなかった。また比較例の電池
Ｃにおいては群圧値の低下は著しく、残存容量特性およ
び回復容量特性ともに本発明例の電池Ａに比較して大き
く劣っていた。また比較例の電池Ｃでは回復充電による
残存容量からの容量回復が殆ど認められず、群圧値の低
下が回復容量特性を著しく低下させたと推測される。With respect to these batteries A, B, and C, the electrode plate group pressure value, the remaining discharge capacity after being left in an atmosphere of 40 ° C. for 3 months in the charged state, and the recovery charge capacity after the recovery charge were measured. Discharge conditions are as follows: after leaving the battery in an atmosphere of 25 ° C,
A residual discharge capacity test in which 25 A constant current discharge was performed up to a discharge end voltage of 1.75 V was performed. As for the recovery charge, after the discharge at the constant current of 25 A, the constant voltage charge at 2.45 V (maximum current 50)
In A), the battery was charged for 12 hours. Thereafter, a recovery capacity test was performed under the same conditions as the residual discharge capacity test. The result is shown in FIG.
Shown in From the results shown in FIG. 4, the battery A of the present invention is superior in both the remaining capacity characteristic and the recovery capacity characteristic to the battery B of the conventional example, and the group pressure value of the battery B of the conventional example is slightly reduced. However, in the battery A of the present invention, the group pressure value hardly decreased. Further, in the battery C of the comparative example, the group pressure value was significantly reduced, and both the remaining capacity characteristics and the recovery capacity characteristics were significantly inferior to those of the battery A of the present invention. In addition, in the battery C of the comparative example, the capacity recovery from the remaining capacity due to the recovery charge was hardly recognized, and it is presumed that the reduction in the group pressure value significantly lowered the recovery capacity characteristics.
【００３６】また、比較例の電池Ｃの構成において発泡
倍率を変化させ、上記と同様の放置試験を行ったとこ
ろ、発泡倍率が３０倍を超えて大きくなると放置による
群圧の低下が急激に進行することが確認できたことか
ら、本発明に用いる発泡部材８の発泡倍率としてはこの
ような発泡倍率が３０倍を超えて大きくなる構成にして
用いることが好ましい。このような発泡部材を用いれば
発泡材量が少なく安価なシール形鉛蓄電池を構成するこ
とができる。When the foaming ratio was changed in the structure of the battery C of the comparative example and the same standing test was performed as described above, when the foaming ratio became larger than 30 times, the reduction of the group pressure due to standing rapidly progressed. Therefore, it is preferable to use a foaming member 8 used in the present invention in a configuration in which such a foaming ratio exceeds 30 times. If such a foam member is used, an inexpensive sealed lead-acid battery with a small amount of foam material can be formed.
【００３７】[0037]
【発明の効果】前記したように、本発明によればシール
形鉛蓄電池に用いる間隔保持部材において高価な低発泡
倍率の発泡体を使用する必要がなく、安価な高発泡倍率
の発泡体を用いて長期間にわたり極板群圧を安定して維
持でき、保存特性等に優れたシール形鉛蓄電池を提供で
きることから、工業上、極めて有用である。As described above, according to the present invention, it is not necessary to use an expensive foam having a low expansion ratio in a spacing member used in a sealed lead-acid battery, and an inexpensive foam having a high expansion ratio is used. This is extremely useful in industry because it can stably maintain the electrode group pressure for a long period of time and can provide a sealed lead storage battery having excellent storage characteristics and the like.
【図１】本発明のシール形鉛蓄電池の極板群を示す断面
図FIG. 1 is a sectional view showing an electrode group of a sealed lead-acid battery of the present invention.
【図２】（ａ）本発明のシール形鉛蓄電池に用いる間隔
保持部材の構成前を示す斜視図 （ｂ）同構成後の斜視図FIG. 2A is a perspective view showing a configuration before a spacing member used in the sealed lead-acid battery of the present invention; FIG. 2B is a perspective view after the configuration;
【図３】（ａ）本発明のシール形鉛蓄電池に用いる間隔
保持部材の組合せ前を示す斜視図 （ｂ）同組合せ後の組合せ間隔保持部材の斜視図FIG. 3 (a) is a perspective view showing a state before the combination of the spacing members used in the sealed lead-acid battery of the present invention; and (b) is a perspective view of the combined spacing member after the combination.
【図４】本発明例，従来例および比較例によるシール形
鉛蓄電池の放置特性を示す図FIG. 4 is a diagram showing the storage characteristics of sealed lead-acid batteries according to the present invention, the conventional example, and the comparative example.
１ 正極板 ２ 負極板 ３ ガラスマットセパレータ ４ 極板群 ５ 電槽 ６ 間隔保持部材 ６Ａ 組合せ間隔保持部材 ７ 箱状部材 ７−１ 底壁 ７−２ 側壁 ７−３ 小室 ７−４ 隔壁 ８ 発泡部材 ９ 凹部 １０ 凸部 DESCRIPTION OF SYMBOLS 1 Positive electrode plate 2 Negative electrode plate 3 Glass mat separator 4 Electrode plate group 5 Battery case 6 Spacing member 6A Combination spacing member 7 Box-shaped member 7-1 Bottom wall 7-2 Side wall 7-3 Small chamber 7-4 Partition wall 8 Foaming member 9 concave part 10 convex part
Claims (6)
て積層された極板群を電槽に収納したシール形鉛蓄電池
であって、前記極板群の積層方向の少なくとも一端と前
記電槽内壁との間に一面または両面が開口した箱状の間
隔保持部材を備え、前記間隔保持部材に発泡樹脂からな
る発泡部材を配設したことを特徴とするシール形鉛蓄電
池。1. A sealed lead-acid battery in which an electrode group in which a positive electrode plate and a negative electrode plate are stacked via a separator is housed in a battery case, wherein at least one end of the electrode group in the stacking direction and the inner wall of the battery case are provided. And a box-shaped spacing member having one or both sides opened between the sealing member and a foamed member made of a foamed resin.
た隔壁によって小室に区画され、前記各小室に前記発泡
部材を配設したことを特徴とする請求項１に記載のシー
ル形鉛蓄電池。2. The sealed lead-acid battery according to claim 1, wherein the spacing member is divided into small chambers by partition walls provided inside thereof, and the foam member is provided in each of the small chambers.
壁に対向することを特徴とする請求項１もしくは２のい
ずれかの項に記載のシール形鉛蓄電池。3. The sealed lead-acid battery according to claim 1, wherein an opening of the spacing member faces the inner wall of the battery case.
発泡倍率が３０倍以上としたことを特徴とする請求項１
ないし３のいずれかの項に記載のシール形鉛蓄電池。4. The foam member has closed cells,
The foaming ratio is 30 times or more.
4. The sealed lead-acid battery according to any one of items 3 to 3.
ことを特徴とする請求項１ないし４のいずれかの項に記
載のシール形鉛蓄電池。5. The sealed lead-acid battery according to claim 1, wherein the foam member is made of styrene foam.
た組合せ間隔保持部材を備えていることを特徴とする請
求項１ないし５のいずれかの項に記載のシール形鉛蓄電
池。6. The sealed lead-acid battery according to claim 1, further comprising a combined spacing member in which a plurality of the spacing members are fitted and integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000214060A JP2002033115A (en) | 2000-07-14 | 2000-07-14 | Sealed lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000214060A JP2002033115A (en) | 2000-07-14 | 2000-07-14 | Sealed lead-acid battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002033115A true JP2002033115A (en) | 2002-01-31 |
Family
ID=18709712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000214060A Pending JP2002033115A (en) | 2000-07-14 | 2000-07-14 | Sealed lead-acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002033115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015060712A (en) * | 2013-09-18 | 2015-03-30 | 株式会社東芝 | Secondary battery |
-
2000
- 2000-07-14 JP JP2000214060A patent/JP2002033115A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015060712A (en) * | 2013-09-18 | 2015-03-30 | 株式会社東芝 | Secondary battery |
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