JP2921332B2 - Glass mat for lead acid battery - Google Patents
Glass mat for lead acid batteryInfo
- Publication number
- JP2921332B2 JP2921332B2 JP5121092A JP12109293A JP2921332B2 JP 2921332 B2 JP2921332 B2 JP 2921332B2 JP 5121092 A JP5121092 A JP 5121092A JP 12109293 A JP12109293 A JP 12109293A JP 2921332 B2 JP2921332 B2 JP 2921332B2
- Authority
- JP
- Japan
- Prior art keywords
- glass mat
- glass
- electrolyte
- present
- sponge
- 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.)
- Expired - Fee Related
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
Landscapes
- Cell Separators (AREA)
- Secondary Cells (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鉛蓄電池用ガラスマッ
トに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass mat for a lead storage battery.
【０００２】[0002]
【従来の技術】従来、鉛蓄電池用ガラスマットは、数マ
イクロのガラス繊維を抄紙して作られており、該ガラス
繊維抄紙体の全細孔体積の80％以下が細孔径１〜10μｍ
であった。2. Description of the Related Art Conventionally, glass mats for lead-acid batteries have been made by making a glass fiber of several micron, and 80% or less of the total pore volume of the glass fiber paper body has a pore diameter of 1 to 10 μm.
Met.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うなガラス繊維抄紙体よりなるガラスマットでは、抄紙
技術に限界があり、細孔径のばらつきがある。細孔径が
ばらつくと、電解液保液率が減少し、電池性能では特に
低率放電容量が小さくなる問題点がある。However, the glass mat made of such a glass fiber paper has a limitation in the paper making technique, and the pore diameter varies. If the pore diameter varies, the electrolyte retention rate decreases, and the battery performance has a problem that the low-rate discharge capacity is particularly small.
【０００４】本発明の目的は、電解液保液率を向上でき
る鉛蓄電池用ガラスマットを提供することにある。[0004] It is an object of the present invention to provide a glass mat for a lead-acid battery, which can improve the electrolyte retention rate.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成する本
発明の構成を説明すると、本発明に係る鉛蓄電池用ガラ
スマットは、三次元的に連続した構造を有するスポンジ
状ガラス多孔体で構成され、該スポンジ状ガラス多孔体
の全細孔体積の80％以上が細孔径１〜10μｍであること
を特徴とする。The glass mat for a lead-acid battery according to the present invention comprises a porous sponge-like glass body having a three-dimensionally continuous structure. The sponge-like porous glass body is characterized in that 80% or more of the total pore volume has a pore diameter of 1 to 10 μm.
【０００６】[0006]
【作用】ガラスマットの細孔径が１μｍより小さくなる
と、電解液の表面張力により電解液が進入せず空間が生
じやすい。更に、ガラスマットがガラス繊維で構成され
ていると、繊維同士の交差するところは特に電解液が入
りにくい。また逆に、ガラスマットの細孔径が10μｍよ
り大きくなると、電解液保持性が悪くなり、トータルの
電解液保液率が悪くなる。また、一時的に電解液を保持
しても、長時間静置していると硫酸が下降する成層化現
象が現れ、電池寿命を極端に短くする原因となる。従っ
て、ガラスマットの細孔径は、１〜10μｍが最適であ
る。When the pore size of the glass mat is smaller than 1 μm, the electrolyte does not enter due to the surface tension of the electrolyte, so that a space is easily generated. Further, when the glass mat is made of glass fiber, it is difficult for the electrolyte to enter particularly at the intersection of the fibers. Conversely, if the pore size of the glass mat is larger than 10 μm, the electrolyte retention will be poor, and the total electrolyte retention will be poor. Further, even if the electrolyte is temporarily held, a stratification phenomenon in which sulfuric acid descends appears when the electrolyte is left for a long period of time, which extremely shortens the battery life. Therefore, the pore diameter of the glass mat is optimally 1 to 10 μm.
【０００７】また、細孔径１〜10μｍの細孔の量につい
ては、全細孔体積の80％以上であると、電解液保液率は
ほとんど変わらず、低率放電容量も変化がないが、80％
より少なくなると、保液率が低くなり、低率放電容量も
悪くなる。When the amount of pores having a pore diameter of 1 to 10 μm is 80% or more of the total pore volume, the electrolyte retention rate hardly changes and the low rate discharge capacity does not change. 80%
When the amount is smaller, the liquid retention rate is low, and the low rate discharge capacity is also poor.
【０００８】[0008]
【実施例】以下、本発明の一実施例を詳細に説明する。
本実施例の鉛蓄電池用ガラスマット（以下、本発明品と
称する。）は、三次元的に連続した構造を有するスポン
ジ状ガラス多孔体で構成されている。このようなスポン
ジ状ガラスマットは、平均粒子径が６μｍのガラスビー
ズをマット状とし、ガラスの融点近傍まで温度を上げ焼
結させることによって得られる。本発明品のスポンジ状
ガラスマットは、１〜10μｍの細孔径が全細孔体積の87
％である。これに対し、従来品のガラス繊維からなるガ
ラスマットは、１〜10μｍの細孔径が全細孔体積の72％
である。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail.
The glass mat for a lead-acid battery (hereinafter, referred to as the present invention) of the present embodiment is formed of a sponge-like porous glass having a three-dimensionally continuous structure. Such a sponge-like glass mat is obtained by sintering glass beads having an average particle diameter of 6 μm into a mat shape, raising the temperature to near the melting point of the glass. In the sponge-like glass mat of the present invention, the pore diameter of 1 to 10 μm is 87% of the total pore volume.
%. On the other hand, the conventional glass mat made of glass fiber has a pore diameter of 1 to 10 μm of 72% of the total pore volume.
It is.
【０００９】このような本発明品と従来品のガラスマッ
トとの性能比較を行った。電池はすべて４Ａｈ−６Ｖタ
イプとした。The performance of the glass mat of the present invention and that of the conventional glass mat were compared. All batteries were of the 4 Ah-6 V type.
【００１０】図１は、本発明品と従来品のガラスマット
を用いた鉛蓄電池の初期容量比較である。図より、本発
明品のガラスマットを用いた鉛蓄電池は従来品のガラス
マットを用いた鉛蓄電池よりも15％高容量を示した。な
お、放電試験条件は、0.4 Ａ放電で終止電圧1.7 Ｖ，雰
囲気条件は25±2 ℃とした。FIG. 1 is a comparison of the initial capacities of lead storage batteries using the glass mat of the present invention and the conventional glass mat. As shown in the figure, the lead storage battery using the glass mat of the present invention exhibited 15% higher capacity than the lead storage battery using the conventional glass mat. The discharge test conditions were a 0.4 A discharge, a final voltage of 1.7 V, and the atmospheric conditions were 25 ± 2 ° C.
【００１１】図２は、１〜10μｍの細孔径の総体積が全
細孔体積に対する割合と保液率を示したものである。こ
れより80％以上であると、保液率はほとんど変わらず80
％より小さくなると保液率が低くなることがわかる。FIG. 2 shows the ratio of the total volume of the pore diameters of 1 to 10 μm to the total pore volume and the liquid retention. If it is more than 80%, the liquid retention rate is almost unchanged
%, The liquid retention rate decreases.
【００１２】上記実施例では、スポンジ状ガラス多孔体
の全細孔体積の87％が細孔径１〜10μｍであるとした
が、本発明はこれに限定されるものではなく、スポンジ
状ガラス多孔体の全細孔体積の80％以上が細孔径１〜10
μｍであればよい。In the above embodiment, 87% of the total pore volume of the sponge-like glass porous body has a pore diameter of 1 to 10 μm. However, the present invention is not limited to this, and the present invention is not limited to this. 80% or more of the total pore volume of
μm is sufficient.
【００１３】ガラスマットの細孔径が１μｍより小さく
なると、電解液の表面張力により電解液が進入せず空間
が生じやすい。更に、ガラスマットがガラス繊維で構成
されていると、繊維同士の交差するところは特に電解液
が入りにくい。また逆に、ガラスマットの細孔径が10μ
ｍより大きくなると、電解液保持性が悪くなり、トータ
ルの電解液保液率が悪くなる。また、一時的に電解液を
保持しても、長時間静置していると硫酸が下降する成層
化現象が現れ、電池寿命を極端に短くする原因となる。
従って、ガラスマットの細孔径は、１〜10μｍが最適で
ある。When the pore size of the glass mat is smaller than 1 μm, the electrolyte does not enter due to the surface tension of the electrolyte, so that a space is easily formed. Further, when the glass mat is made of glass fiber, it is difficult for the electrolyte to enter particularly at the intersection of the fibers. Conversely, the pore size of the glass mat is 10μ.
If it is larger than m, the electrolyte retention will be poor, and the total electrolyte retention will be poor. Further, even if the electrolyte is temporarily held, a stratification phenomenon in which sulfuric acid descends appears when the electrolyte is left for a long period of time, which extremely shortens the battery life.
Therefore, the pore diameter of the glass mat is optimally 1 to 10 μm.
【００１４】また、細孔径１〜10μｍの細孔の量につい
ては、全細孔体積の80％以上であると、電解液保液率は
ほとんど変わらず、低率放電容量も変化がないが、80％
より少なくなると、保液率が低くなり、低率放電容量も
悪くなる。When the amount of pores having a pore diameter of 1 to 10 μm is 80% or more of the total pore volume, the electrolyte retention rate hardly changes and the low rate discharge capacity does not change. 80%
When the amount is smaller, the liquid retention ratio is low and the low rate discharge capacity is also poor.
【００１５】[0015]
【発明の効果】以上説明したように本発明に係る鉛蓄電
池用ガラスマットは、三次元的に連続した構造を有する
スポンジ状ガラス多孔体で構成され、該スポンジ状ガラ
ス多孔体の全細孔体積の80％以上が細孔径１〜10μｍで
あるので、トータルの電解液保液率が高く、電池寿命が
長く、しかも低率放電特性の優れた鉛蓄電池を得ること
ができる。As described above, the glass mat for a lead storage battery according to the present invention is composed of a sponge-like glass porous body having a three-dimensionally continuous structure, and the total pore volume of the sponge-like glass porous body. 80% or more has a pore diameter of 1 to 10 μm, so that a lead storage battery having a high total electrolyte retention rate, a long battery life, and excellent low-rate discharge characteristics can be obtained.
【図１】本発明品と従来品のガラスマットを用いた鉛蓄
電池の初期容量比較図である。FIG. 1 is a comparison diagram of the initial capacities of lead storage batteries using a glass mat of the present invention and a conventional glass mat.
【図２】１〜10μｍの細孔径の総体積が全細孔体積に対
する割合と保液率を示す線図である。FIG. 2 is a diagram showing a ratio of a total volume of pore diameters of 1 to 10 μm to a total pore volume and a liquid retention ratio.
Claims (1)
ジ状ガラス多孔体で構成され、該スポンジ状ガラス多孔
体の全細孔体積の80％以上が細孔径１〜10μｍであるこ
とを特徴とする鉛蓄電池用ガラスマット。1. A sponge-like glass porous body having a three-dimensionally continuous structure, wherein 80% or more of the total pore volume of the sponge-like glass porous body has a pore diameter of 1 to 10 μm. Glass mats for lead-acid batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5121092A JP2921332B2 (en) | 1993-05-24 | 1993-05-24 | Glass mat for lead acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5121092A JP2921332B2 (en) | 1993-05-24 | 1993-05-24 | Glass mat for lead acid battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06333549A JPH06333549A (en) | 1994-12-02 |
| JP2921332B2 true JP2921332B2 (en) | 1999-07-19 |
Family
ID=14802684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5121092A Expired - Fee Related JP2921332B2 (en) | 1993-05-24 | 1993-05-24 | Glass mat for lead acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2921332B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6908052B2 (en) * | 2016-12-07 | 2021-07-21 | 昭和電工マテリアルズ株式会社 | Liquid lead-acid battery |
| JP7412948B2 (en) * | 2019-10-03 | 2024-01-15 | エンテックアジア株式会社 | Separator for lead acid batteries |
-
1993
- 1993-05-24 JP JP5121092A patent/JP2921332B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06333549A (en) | 1994-12-02 |
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