JPS63121245A - Separator for use in enclosed type lead storage battery - Google Patents
Separator for use in enclosed type lead storage batteryInfo
- Publication number
- JPS63121245A JPS63121245A JP61266907A JP26690786A JPS63121245A JP S63121245 A JPS63121245 A JP S63121245A JP 61266907 A JP61266907 A JP 61266907A JP 26690786 A JP26690786 A JP 26690786A JP S63121245 A JPS63121245 A JP S63121245A
- Authority
- JP
- Japan
- Prior art keywords
- separator
- electrolyte
- sulfuric acid
- storage battery
- lead storage
- 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
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000002253 acid Substances 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 abstract description 19
- 239000003365 glass fiber Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011148 porous material Substances 0.000 abstract description 3
- 239000007864 aqueous solution Substances 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 230000008961 swelling Effects 0.000 abstract 2
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000011084 recovery Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011245 gel electrolyte Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920000247 superabsorbent polymer Polymers 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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
- H01M50/409—Separators, membranes or diaphragms characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0002—Aqueous electrolytes
- H01M2300/0005—Acid electrolytes
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cell Separators (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は密閉型鉛蓄電池用セパレータに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a separator for sealed lead-acid batteries.
従来の技術
従来、この種の密閉型鉛蓄電池用セパレータは、例えば
米国特許第３８６２８６１号明細書にある様に微細ガラ
ス繊維を主体として抄紙され、微細ガラス繊維が絡みあ
って生じる空間に、毛管現象を利用して電解液が保持さ
れ、またこの空間を通って気体も流通するという構成で
あった。またゲル状物質を電池内に充填するゲル式電池
はゲルの調整、ゲルの充填など、作業が複雑であった。Conventionally, this type of separator for sealed lead-acid batteries has been made of paper mainly made of fine glass fibers, as described in U.S. Pat. No. 3,862,861. The electrolyte was held using the space, and gas also circulated through this space. In addition, gel type batteries, in which a gel-like substance is filled into the battery, require complicated operations such as gel adjustment and gel filling.
発明が解決しようとする問題点
このような従来の構成では、電解液中の水分が何らかの
原因で蒸発して液不足となった際に、その特性上電解液
がセパレータ中に飽和している時より厚さが薄くなる（
第１図参照）。Problems to be Solved by the Invention In such a conventional configuration, when the water in the electrolyte evaporates for some reason and the liquid becomes insufficient, due to its characteristics, when the electrolyte is saturated in the separator. The thickness becomes thinner (
(See Figure 1).
厚さが薄くなると極板とセパレータの間に圧力がかから
ず、容量が出にくくなる。また水分の蒸発に伴い電解液
濃度が高くなって正負極の活物質の劣化が促進されるこ
とによシ寿命が短くなるという問題があった。さらにセ
パレータの多孔度、及び最大孔径の設定を厳密に行うこ
とは技術的に難しいため、セパレータ中の毛細管状の空
間部に毛管現象を利用して、単純に電解液を保持させる
従来のセパレータでは、電解液の保持性能を安定させる
程度には自ずから限界が存在した。また繊維の材質も濡
れ性のよい、例えばガラス繊維のようなものに限られて
いた。またゲル式の電池は、電解質をゲル状に調整して
から電池内に注入するので作業が頻雑であった。When the thickness becomes thinner, no pressure is applied between the electrode plate and the separator, making it difficult to generate capacity. There is also the problem that the electrolyte concentration increases with the evaporation of water, accelerating the deterioration of the active materials of the positive and negative electrodes, resulting in a shortened lifespan. Furthermore, it is technically difficult to strictly set the porosity and maximum pore diameter of the separator, so conventional separators simply retain the electrolyte by utilizing capillary action in the capillary-like spaces in the separator. However, there was a natural limit to the extent to which the electrolyte retention performance could be stabilized. Furthermore, the material of the fibers has been limited to those with good wettability, such as glass fibers. In addition, gel-type batteries require frequent work because the electrolyte must be prepared into a gel state and then injected into the battery.
本発明はこのような問題点を解決するもので、従来より
も耐高温性に優れ、更に作業性に優れた密閉型鉛蓄電池
を得ることのできるセパレータを提供することを目的と
するものである。The present invention is intended to solve these problems, and aims to provide a separator that can produce a sealed lead-acid battery that has better high temperature resistance than conventional separators and is also easier to work with. .
問題点を解決するための手段
この問題点を解決するために本発明は、硫酸を含んで膨
潤する物質を成型した板状成型物をセパレータとしたも
のであり、これを極板間に挿入したものである。又その
厚さは膨潤状態で極板間隔と同じであるか或はそれ以上
であるものである。Means for Solving the Problem In order to solve this problem, the present invention uses a plate-shaped molded product made of a substance that swells when it contains sulfuric acid as a separator, which is inserted between the electrode plates. It is something. Also, its thickness in the swollen state is the same as or greater than the distance between the electrode plates.
作 用
この構成によるセパレータを備えた密閉型鉛蓄電池は、
ガラス繊維と保液する構造が全く異なるため、液量が減
少しても圧力がさがらず容量変化を生じない。また電解
液がセパレータ中でゲル状になり内部に含有されるため
流動体のままのときよりも水分の蒸発量が少なくなり、
耐高温性に優れたものとなる。さらに極板間に板状の本
セパレータを設置する際、従来のガラスマットセパレー
タ組み立てや、ゲル状電解液注入に比較して製造方法が
簡略化出来る。また硫酸を含んで膨潤する物質は、倍率
吸水量など様々なものがあり、あらゆる設定が可能であ
る。Function: A sealed lead-acid battery with a separator of this configuration is
Since the structure for retaining liquid is completely different from that of glass fibers, even if the amount of liquid decreases, the pressure will not drop and the capacity will not change. In addition, because the electrolyte becomes a gel in the separator and is contained inside, the amount of water evaporation is lower than when it remains a fluid.
It has excellent high temperature resistance. Furthermore, when installing this plate-shaped separator between the electrode plates, the manufacturing method can be simplified compared to conventional glass mat separator assembly or gel electrolyte injection. In addition, there are various types of substances that swell with sulfuric acid, such as magnification and water absorption, and various settings can be made.
実施例
以下、本発明の実施例について説明する。硫酸を含んで
約６０倍に膨潤する物質である変性ポリビニルアルコー
ル（例えば、高吸水性ポリマーＧＰく日本合成化学工業
ＫＫ製〉）を板状に成型したものをセパレータＡとする
。Examples Examples of the present invention will be described below. Separator A is made by molding modified polyvinyl alcohol (for example, super absorbent polymer GP, manufactured by Nippon Gosei Kagaku Kogyo KK) into a plate shape, which is a substance that swells approximately 60 times when it contains sulfuric acid.
本発明によるセパレータＡ、及び従来のガラス繊維から
なるセパレータＢ、及び従来のゲル式の電解質Ｃを用い
て電圧６ｖ容量ｅ、ｓＡｈの電池Ａ。A battery A with a voltage of 6V and a capacity of e and sAh using a separator A according to the present invention, a conventional separator B made of glass fiber, and a conventional gel type electrolyte C.
Ｂ、Ｃを製作し高温保存試験を行った。なお電解液の注
入は所定比重の硫酸溶液を所定量注入した。B and C were manufactured and subjected to high temperature storage tests. Note that the electrolyte solution was injected by injecting a predetermined amount of a sulfuric acid solution having a predetermined specific gravity.
第２図は６０’Ｃで充電状態で４週間放置した後の残存
容量、また７、３６Ｖ１０．４ＣＡ（２，８Ａ）にて６
時間回復充電を行った後の回復容量の結果を示したもの
である。第３図は、第２図の状態にある電池の重量減少
量を示したものである。第２図、第３図からも明らかな
ように従来の方法で製造した電池Ｂが電解液の蒸発によ
り液不足を起こして残存容量は初期の４０％以下、回復
容量が６０チ以下となっているが、本発明による電池Ａ
は、残存容量でも６０％以上、回復容量では７０〜９゜
チ程度であり保存特性が良い。Figure 2 shows the remaining capacity after being left in a charged state for 4 weeks at 60'C, and at 7.36V 10.4CA (2.8A).
This figure shows the results of recovery capacity after time recovery charging. FIG. 3 shows the weight loss of the battery in the state shown in FIG. 2. As is clear from Figures 2 and 3, battery B manufactured using the conventional method suffered from a shortage of electrolyte due to evaporation of the electrolyte, resulting in a remaining capacity of less than 40% of its initial capacity and a recovery capacity of less than 60 cm. However, the battery A according to the present invention
It has good storage characteristics, with a residual capacity of over 60% and a recovery capacity of about 70 to 9 degrees.
本実施例では硫酸を含んで膨潤する物質として変性ポリ
ビニルアルコールを使用したが、硫酸を含んで膨潤する
物質で板状に成型することができるならば、各種の物質
を使用してもよい。その際にその物質のもつ固有の吸液
量をあらかじめ測定し、液量を決定することが重要であ
る。理想的には飽和量が含まれているのが好ましい。In this example, modified polyvinyl alcohol was used as the substance that swells when it contains sulfuric acid, but any other substance that swells when it contains sulfuric acid may be used as long as it can be molded into a plate shape. At that time, it is important to measure the specific amount of liquid absorbed by the substance in advance and determine the amount of liquid. Ideally, a saturating amount is included.
発明の効果
以上のように本発明によれば、密閉型鉛蓄電池のセパレ
ータ内に保持される電解液がゲル状物質に含まれるため
、高温においても水分が失なわれにくくその結果寿命が
長くなる。また電解液の保持の方法が根本的にガラス繊
維のセパレータと異なるため減液時の圧力の低下に影響
を受けない。Effects of the Invention As described above, according to the present invention, the electrolytic solution held in the separator of a sealed lead-acid battery is contained in a gel-like substance, so that water is not easily lost even at high temperatures, resulting in a longer life. . Furthermore, since the method of holding the electrolyte is fundamentally different from that of glass fiber separators, it is not affected by the drop in pressure when the liquid is reduced.
また多孔度や最大孔径の設定にこだわらない。さらに板
状のセパレータを組込んだ電池に電解液である硫酸水溶
液を注入する方法が可能であるため、従来のゲル式電解
液の注入に比較して作業性が著しく向上するなどの特徴
を有している。Also, there is no need to worry about setting the porosity or maximum pore diameter. Furthermore, since it is possible to inject a sulfuric acid aqueous solution, which is an electrolyte, into a battery that incorporates a plate-shaped separator, it has features such as significantly improved workability compared to injection of conventional gel-type electrolytes. are doing.
第１図は従来例による注液量と圧力の関係を示す特性図
、第２図は密閉型鉛蓄電池の高温保存後の残存容量およ
び回復容量を示す特性図、第３図は同高温保存後の重量
減少量を示す特性図である。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
第２図
第３図Figure 1 is a characteristic diagram showing the relationship between liquid injection volume and pressure according to the conventional example, Figure 2 is a characteristic diagram showing the remaining capacity and recovery capacity of a sealed lead acid battery after high temperature storage, and Figure 3 is a characteristic diagram showing the relationship between the liquid injection amount and pressure after storage at the same high temperature. FIG. 2 is a characteristic diagram showing the amount of weight reduction. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3
Claims (2)
を特徴とする密閉型鉛蓄電池用セパレータ。(1) A separator for a sealed lead-acid battery, characterized in that it is made of a material that swells when it contains sulfuric acid and is molded into a plate shape.
あるか、或はそれ以上である事を特徴とする特許請求の
範囲第１項記載の密閉型鉛蓄電池用セパレータ。(2) The separator for a sealed lead-acid battery according to claim 1, wherein the thickness of the plate-shaped molded body in a swollen state is the same as or greater than the electrode plate spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61266907A JPS63121245A (en) | 1986-11-10 | 1986-11-10 | Separator for use in enclosed type lead storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61266907A JPS63121245A (en) | 1986-11-10 | 1986-11-10 | Separator for use in enclosed type lead storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63121245A true JPS63121245A (en) | 1988-05-25 |
| JPH0517657B2 JPH0517657B2 (en) | 1993-03-09 |
Family
ID=17437318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61266907A Granted JPS63121245A (en) | 1986-11-10 | 1986-11-10 | Separator for use in enclosed type lead storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63121245A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7682738B2 (en) | 2002-02-07 | 2010-03-23 | Kvg Technologies, Inc. | Lead acid battery with gelled electrolyte formed by filtration action of absorbent separators and method for producing it |
-
1986
- 1986-11-10 JP JP61266907A patent/JPS63121245A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7682738B2 (en) | 2002-02-07 | 2010-03-23 | Kvg Technologies, Inc. | Lead acid battery with gelled electrolyte formed by filtration action of absorbent separators and method for producing it |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0517657B2 (en) | 1993-03-09 |
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