JPS5927451A - Enclosed lead storage battery - Google Patents
Enclosed lead storage batteryInfo
- Publication number
- JPS5927451A JPS5927451A JP57137634A JP13763482A JPS5927451A JP S5927451 A JPS5927451 A JP S5927451A JP 57137634 A JP57137634 A JP 57137634A JP 13763482 A JP13763482 A JP 13763482A JP S5927451 A JPS5927451 A JP S5927451A
- Authority
- JP
- Japan
- Prior art keywords
- electrode plate
- separator
- paper
- electrolyte
- negative electrode
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
-
- 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
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は密閉形鉛蓄電池に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to a sealed lead acid battery.
２１“ ′〕
さらに詳しくは電解液量を遊離の電解液がない状態に規
制するとともに、直径Ｏ０１〜１０μｍのガラス繊維セ
パレータを用い、充電時に正極板より発生する酸素ガス
を負極板にて吸収除去しうる極板容量比率を備え、かつ
ガス排気口部に安全弁を有した密閉形鉛蓄電池に関する
ものである。21 "'] In more detail, the amount of electrolyte is regulated so that there is no free electrolyte, and a glass fiber separator with a diameter of 001 to 10 μm is used to absorb and remove oxygen gas generated from the positive electrode plate during charging by the negative electrode plate. This invention relates to a sealed lead-acid battery that has a plate capacity ratio that can be adjusted and has a safety valve at the gas exhaust port.
従来例の構成とその問題点
この種の密閉形鉛蓄電池は、ポータプル機器等の電源と
して最近、主に用いられており、より保存特性（長期間
保存した時の容量、およびその後に充電した後の回復容
量）に優れた電池が要望されている。しかし、長時間保
存すると電槽およびガス排気口部の安全弁より水の蒸発
があり、電解液が減少する。電解液の減少は電池の内部
抵抗を増加させ、保存特性を悪くしていることがわかっ
た。この保存特性の劣化は、負極板とセパレータのぬれ
およびなじみが、正極板およびセパレータと電解液との
ぬれおよびなじみよりも悪いために起こると考えられる
。電池内の電解液が長期保存等により減少すると、負極
板表面のセパレータと３ページ
接する部分の電解液が選択的に失なわれることが、どの
部分で内部抵抗が上昇し７たかを測定することにより確
められた。これは負極板が疎水性である多孔性金属鉛で
できているためで、電解液が少なくなると、より親水性
のある正極板やセパレータに電解液が移動するためと推
察できる。的極板とセパ１／−夕のぬれおよびなじみの
低下は、負極板への硫酸の拡散を阻害し、長期間保存し
た後の容量を著しく劣化させる。また、内部抵抗の上昇
や硫酸の拡散の低下が充電を困難にし、回復容量を低下
させていることもわかった。また、初期容量特に、高率
放電は正極板が律速となっており、電解液が正極板へ拡
散しやすくなれば、容量が増加すると考えられる。この
種の電池は電解液が少なく、例えば自動車用鉛蓄電池の
ように電解液が豊富な液式電池に比べて高率放電が劣っ
ているのが通常である。Conventional structure and problems This type of sealed lead-acid battery has recently been mainly used as a power source for portable devices, etc. There is a demand for batteries with excellent recovery capacity. However, if stored for a long time, water evaporates from the safety valve in the battery case and gas exhaust port, reducing the amount of electrolyte. It was found that a decrease in the electrolyte increased the internal resistance of the battery and worsened its storage characteristics. This deterioration in storage characteristics is thought to occur because the wetting and compatibility between the negative electrode plate and the separator are worse than the wetting and compatibility between the positive electrode plate and the separator and the electrolyte. When the electrolyte in the battery decreases due to long-term storage, etc., the electrolyte is selectively lost at the part of the surface of the negative electrode plate that is in contact with the separator.It is important to measure in which part the internal resistance increases7. confirmed by. This is because the negative electrode plate is made of porous metal lead, which is hydrophobic, and it can be inferred that when the electrolyte decreases, the electrolyte moves to the more hydrophilic positive electrode plate and separator. The reduction in wetting and compatibility between the target electrode plate and the separator 1/- layer inhibits the diffusion of sulfuric acid into the negative electrode plate, and significantly deteriorates the capacity after long-term storage. It was also found that increased internal resistance and reduced sulfuric acid diffusion made charging difficult and reduced recovery capacity. In addition, the positive electrode plate is rate-determining the initial capacity, especially in high-rate discharge, and it is thought that the capacity increases if the electrolyte becomes easier to diffuse to the positive electrode plate. This type of battery has a low electrolyte content and is usually inferior in high rate discharge compared to a liquid type battery with a rich electrolyte, such as a lead acid battery for an automobile.
発明の目的
本発明は極板とセパレータのぬれおよびなじみを改善す
ることで、電解液に起因した保存特性の劣化を防止し、
かつ高率放電時の容量向上を図ったものである。Purpose of the Invention The present invention prevents deterioration of storage characteristics caused by electrolyte by improving the wetting and fitting of electrode plates and separators.
In addition, the aim is to improve capacity during high rate discharge.
発明の構成
即ち、本発明は遊離の電解液がない状態に電解液量が期
制されるとともに、充電時に正極板より発生する酸素ガ
スを負極板にて吸収除去しうる極板容量比率をもった正
、負両極板とこの極板間に介在するガラス繊維セパレー
タとの間にパルプ繊維主体の抄造紙を介在したことを特
徴とするものである。In other words, the present invention limits the amount of electrolyte to a state where there is no free electrolyte, and has an electrode plate capacity ratio that allows the negative electrode plate to absorb and remove oxygen gas generated from the positive electrode plate during charging. It is characterized in that a paper made mainly of pulp fibers is interposed between the positive and negative electrode plates and the glass fiber separator interposed between the electrode plates.
具体的々電池の極板群構成を図により説明する。Specifically, the structure of the electrode plate group of the battery will be explained with reference to the drawings.
図は正極板２と負極板３、およびガラス繊維からなるセ
パレータ４とにより構成される極板群１において、前記
正極板および負極板とセパレータとの間にパルプ繊維を
主体とした抄造紙６をはさみ込んだものである。パルプ
繊維は硫酸に比較的強い天然繊維であり、その真表面積
はきわめて大きく、希硫酸を吸収する能力はガラス繊維
の１０倍以上に相当する。このため希硫酸とのぬれの悪
い負極板表面にパルプ繊維からなる紙を押し付け５べ・
−ジ
ることによりなじみをよくして負極板表面のぬれを改善
することができ、電解液を保持しているセパレータから
負極板への硫酸の拡散を容易にしている。そのだめ従来
長期保存中に電解液が減少し、内部抵抗を高めて保存特
性を悪くしていた原因を、取除くことができた。また正
極板表面に押し付けられた抄造紙は電解液を保持してい
るセパレータから正極板への硫酸の拡散を容易にするた
め、高率放電時の容量を増加することができた。The figure shows an electrode plate group 1 consisting of a positive electrode plate 2, a negative electrode plate 3, and a separator 4 made of glass fiber, in which a made paper 6 mainly made of pulp fiber is inserted between the positive electrode plate, the negative electrode plate, and the separator. It is inserted. Pulp fiber is a natural fiber that is relatively resistant to sulfuric acid, and its true surface area is extremely large, and its ability to absorb dilute sulfuric acid is more than 10 times that of glass fiber. For this reason, paper made of pulp fiber is pressed onto the surface of the negative electrode plate, which has poor wettability with dilute sulfuric acid.
- It is possible to improve the wetting of the surface of the negative electrode plate by improving the compatibility, and facilitate the diffusion of sulfuric acid from the separator holding the electrolyte to the negative electrode plate. As a result, we have been able to eliminate the problem that conventionally caused the electrolyte to decrease during long-term storage, increasing internal resistance and worsening storage characteristics. In addition, the paper pressed against the surface of the positive electrode plate facilitated the diffusion of sulfuric acid from the separator holding the electrolyte to the positive electrode plate, making it possible to increase the capacity during high rate discharge.
抄造紙は真表面の多い天然繊維が有効であり、なかでも
パルプ繊維が最も効果のあることがわかった。なお抄造
紙は組立時には強度があった方が、製造しやすいため、
耐水剤等を加える場合があるが、一般的な耐水剤は硫酸
にも溶解性がないので、繊維はほぐれない。そのため極
板とのなじみや密着が悪いことがわかった。しかし、例
えば、尿素系の耐水剤を使用した抄造紙は、通常パルプ
繊維が交差している部分を水素結合で耐水剤が結び付け
て強度を保っているが、希硫酸が入ることにより加水分
解されて水素結合が解かれ、繊維はげら６ノ゛
ばらになる。It was found that natural fibers with a large surface area are effective for paper making, and pulp fibers are the most effective. In addition, it is easier to manufacture papermaking if it is strong when assembled.
Waterproofing agents may be added, but typical waterproofing agents are not soluble in sulfuric acid, so the fibers will not loosen. It was found that this caused poor compatibility and adhesion with the electrode plate. However, for example, when paper is made using a urea-based waterproofing agent, the waterproofing agent normally binds the intersections of pulp fibers with hydrogen bonds to maintain its strength, but when dilute sulfuric acid is added, it is hydrolyzed. The hydrogen bonds are broken and the fibers break apart into six pieces.
このため、極板と抄造紙との密着がきわめて良くなり、
前記の効果を充分にもたらすことができた。For this reason, the adhesion between the electrode plate and the papermaking material is extremely good.
The above effects could be sufficiently brought about.
また抄造紙は電解液を吸収する能力に優れているが、多
孔度を高くすることができないので、電解液保持能力は
ガラス繊維セパレータより劣る。そのため抄造紙を厚く
するととは、電池内の電解液量を少なくすることにカリ
容量低下をきたす。抄造紙は、極板表面のぬれを良くシ
、セパレータの電解液を極板に供給する媒体としての役
目をなすので極板表面のみで良く、実際には０．１調以
下の厚みで良い。Furthermore, although papermaking has an excellent ability to absorb electrolyte, it cannot have high porosity, so its ability to retain electrolyte is inferior to that of glass fiber separators. Therefore, making the paper thicker reduces the amount of electrolyte in the battery, resulting in a decrease in potash capacity. Since the paper serves to wet the surface of the electrode plate well and serves as a medium for supplying the electrolyte of the separator to the electrode plate, it may be used only on the surface of the electrode plate, and in fact, the thickness may be 0.1 tone or less.
実施例の説明 次に本発明の電池を実施例により詳述する。Description of examples Next, the battery of the present invention will be explained in detail with reference to Examples.
本実施例における電池の極板には、縦４０ ｍｍ 。The electrode plate of the battery in this example has a length of 40 mm.
幅３０ｍ、厚さは正極板が３．０＋＋ｏｎ、負極板が２
゜１咽とし、格子に活物質を充填し化成したものを用い
た。また、セパレータは平均直径０．７μｍのガラス繊
維からなり厚さが２．１餌のものを用いた。Width 30m, thickness of positive electrode plate is 3.0++on, negative electrode plate is 2.
The lattice was filled with an active material and chemically formed. The separator used was one made of glass fiber with an average diameter of 0.7 μm and a thickness of 2.1 mm.
極板とセパレータとの間にはパルプ繊維が９９％７ペー
ジ
以上でかつ耐水剤として尿素ホルムアルデヒド縮合樹脂
を用いた０、 ０３ｍ厚の抄造紙をはさみ込んだ。極板
群は正極板２枚、負極板３枚からなり、比重１．３０（
２０″Ｃ）の硫酸１９＋＋＋（！を加え、かつ極板群が
電池内にて約２０１η／ｄ ７７？ の圧力がかかるよ
うにした。本発明における第１の実施例は負極板とセパ
レータどの間にのみ前記の抄造紙をはさみ込んだもので
あり、第２の実施例は正極板、負極板どもセパレータと
の間に抄造紙をはさんだものである。Between the electrode plate and the separator was sandwiched 0.03 m thick paper made of 7 pages or more of 99% pulp fiber and using urea-formaldehyde condensation resin as a water-resistant agent. The electrode plate group consists of two positive electrode plates and three negative electrode plates, and has a specific gravity of 1.30 (
20"C) sulfuric acid 19+++ (!) was added, and the electrode plate group was subjected to a pressure of about 201η/d 77? in the battery. In the first embodiment of the present invention, between the negative electrode plate and the separator In the second embodiment, the made paper is sandwiched between the positive electrode plate, the negative electrode plate, and the separator.
この電池と同じ構成で極板とセパレータとの間に抄造紙
をはさみ込寸ない従来品の電池と、初期容量（２０”Ｃ
０，４Ａ放電、２０”Ｃｌ０Ａ放電）、保存特性（４０
°Ｃ６ケ月保存後の２ｏ″Ｃ０，４Ａ放電（残存容量）
および２０°Ｃにて２．４５Ｖの定電圧で６時間充電し
た後の２０°Ｃ０，４Ａ放電（回復容量））を比較した
結果を次表に示す。A conventional battery with the same configuration as this battery, with paper made between the electrode plate and the separator, and an initial capacity (20"C)
0.4A discharge, 20"Cl0A discharge), storage characteristics (40"
2o''C0, 4A discharge after storage for 6 months at °C (residual capacity)
The following table shows the results of comparing 20°C 0.4A discharge (recovery capacity) after charging at a constant voltage of 2.45V at 20°C for 6 hours.
以下余白
この結果から正極板とガラス繊維セパレータとの間の抄
造紙は、高率放電時の容量増加に効果があり、負極板と
セパレータとの間の抄造紙は、保存特性の劣化防止に効
果があることがわかる。Margin below From these results, papermaking between the positive electrode plate and the glass fiber separator is effective in increasing capacity during high rate discharge, and papermaking between the negative electrode plate and the separator is effective in preventing deterioration of storage characteristics. It turns out that there is.
発明の効果
本発明は、極板とガラス繊維セパレータとの間に、パル
プ繊維主体の抄造紙を介在させることで、極板とセパレ
ータとの間のなじみおよびぬれを高めて保存特性ならび
に急放電特性を向上させたものである。Effects of the Invention The present invention interposes a paper made mainly of pulp fiber between the electrode plate and the glass fiber separator to improve the conformability and wettability between the electrode plate and the separator, thereby improving storage characteristics and rapid discharge characteristics. It is an improved version.
図は本発明の密閉形鉛蓄電池における極板群を９ベーゾ
示す。
１・・・・・・極板群、２・・・・・・正極板、３・・
・・・・負極板、４・中・・・・セパレータ、６・・・
・０パルプ繊維主体の抄造紙。The figure shows a nine-bezo electrode group in the sealed lead-acid battery of the present invention. 1... Electrode plate group, 2... Positive electrode plate, 3...
...Negative electrode plate, 4.Middle...Separator, 6...
・Paper made mainly from 0 pulp fibers.
Claims (1)
ともに、充電時に正極板より発生する酸素ガスを負極板
で吸収除去しうる極板容量比率をもった正、負両極板と
、この正、負両極板間に介在するガラス繊維セパレータ
と、ガス排気口部に装備された安全弁とを備え、前記極
板とガラス繊維セパレータとの間にバルブ繊維主体の抄
造紙を介在した密閉形鉛蓄電池。 （錦 抄造紙が９５％以上のパルプ繊維含有量を有し、
かつ硫酸溶解液の耐水剤を含んでいる特許請求の範囲第
１項記載の密閉形鉛蓄電池。 （′４ 抄造紙の厚みが０．１ｙａ＋以下である特許請
求の範囲第１項記載の密閉形鉛蓄電池。(1) Positive and negative electrode plates having a capacity ratio that allows the amount of electrolyte to be regulated to a state where there is no free electrolyte, and the negative electrode plate absorbs and removes oxygen gas generated from the positive electrode plate during charging; A sealed type comprising a glass fiber separator interposed between the positive and negative electrode plates and a safety valve installed at the gas exhaust port, with a paper made mainly of valve fiber interposed between the electrode plate and the glass fiber separator. Lead acid battery. (Nishiki paper has a pulp fiber content of 95% or more,
The sealed lead-acid battery according to claim 1, further comprising a water-resistant agent of a sulfuric acid solution. ('4) The sealed lead-acid battery according to claim 1, wherein the thickness of the paper is 0.1 ya+ or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57137634A JPS5927451A (en) | 1982-08-06 | 1982-08-06 | Enclosed lead storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57137634A JPS5927451A (en) | 1982-08-06 | 1982-08-06 | Enclosed lead storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5927451A true JPS5927451A (en) | 1984-02-13 |
| JPH0465496B2 JPH0465496B2 (en) | 1992-10-20 |
Family
ID=15203225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57137634A Granted JPS5927451A (en) | 1982-08-06 | 1982-08-06 | Enclosed lead storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5927451A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6264055A (en) * | 1985-09-13 | 1987-03-20 | Matsushita Electric Ind Co Ltd | Lead-acid battery |
| JPH03112067A (en) * | 1989-09-27 | 1991-05-13 | Shin Kobe Electric Mach Co Ltd | Sealed lead-acid battery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49102226U (en) * | 1972-12-23 | 1974-09-03 |
-
1982
- 1982-08-06 JP JP57137634A patent/JPS5927451A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49102226U (en) * | 1972-12-23 | 1974-09-03 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6264055A (en) * | 1985-09-13 | 1987-03-20 | Matsushita Electric Ind Co Ltd | Lead-acid battery |
| JPH03112067A (en) * | 1989-09-27 | 1991-05-13 | Shin Kobe Electric Mach Co Ltd | Sealed lead-acid battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0465496B2 (en) | 1992-10-20 |
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