JPH0668902A - Lead acid battery electrolyte - Google Patents
Lead acid battery electrolyteInfo
- Publication number
- JPH0668902A JPH0668902A JP4220015A JP22001592A JPH0668902A JP H0668902 A JPH0668902 A JP H0668902A JP 4220015 A JP4220015 A JP 4220015A JP 22001592 A JP22001592 A JP 22001592A JP H0668902 A JPH0668902 A JP H0668902A
- Authority
- JP
- Japan
- Prior art keywords
- silica
- sulfuric acid
- acid
- electrolyte
- main component
- 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
-
- 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
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鉛蓄電池用電解質の改
良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved electrolyte for lead acid batteries.
【０００２】[0002]
【従来の技術】従来、鉛蓄電池用電解質としては、流動
性のある希硫酸を用い、この希硫酸をリテーナと呼ばれ
る保持体に含浸させ、自由液の発生を防止している。保
持体としては、微細なガラス繊維を抄紙し、不織布状に
し、適当な幅及び長さに切断したものを用い、正・負極
板間に配置し、挟み込むように外力をかけている。つま
り、従来電解質は、このガラス繊維の不織布に含浸、保
持させ、遊離液が出ないようにするいわゆるリテーナ方
式であった。2. Description of the Related Art Conventionally, a dilute sulfuric acid having fluidity is used as an electrolyte for a lead storage battery, and a dilute sulfuric acid is impregnated in a holder called a retainer to prevent generation of a free liquid. As the holder, a fine glass fiber is made into paper, made into a non-woven fabric, and cut into a suitable width and length. The holder is placed between the positive and negative electrode plates, and an external force is applied so as to sandwich it. That is, the conventional electrolyte was a so-called retainer system in which the non-woven fabric of the glass fiber was impregnated and retained so that the liberated liquid did not come out.
【０００３】しかしながら、このような従来の鉛蓄電池
用電解質では、保持体となるリテーナを必要とするた
め、該リテーナを作製する工程である微細な繊維を作る
工程、該微細な繊維を水に分散させる工程、抄紙工程、
乾燥工程、切断工程が必要で、さらに電池組立の際に極
板間に配置する工程、その後注液する注液工程等と数多
くの工程が必要となる問題点がある。また、このリテー
ナ方式では、正・負両極板との密着が不完全であり、ど
うしても外力による加圧が必要となるという問題点があ
った。However, such a conventional electrolyte for a lead-acid battery requires a retainer which serves as a holder, and therefore, the step of producing the retainer, the step of producing fine fibers, and dispersing the fine fibers in water. Process, papermaking process,
There is a problem that a drying step and a cutting step are required, and many steps are required such as a step of disposing between the electrode plates at the time of battery assembly and a liquid injection step of injecting liquid thereafter. Further, this retainer system has a problem that the contact with the positive and negative electrode plates is incomplete and pressurization by an external force is necessary.
【０００４】このような問題点を解決する鉛蓄電池用電
解質として、ＳｉＯ2 を主成分とした粉体と希硫酸とを
混合し、希硫酸を非流動化させたものが提案されてい
る。As an electrolyte for a lead storage battery which solves such a problem, there has been proposed one in which a powder containing SiO 2 as a main component and dilute sulfuric acid are mixed to make the dilute sulfuric acid non-fluidized.
【０００５】かかる鉛蓄電池用電解質は、シート状或い
は平面状をなすリテーナが不要なため、いかなる形状或
いはパターンに対しても容易に変形し、更に極板との密
着も向上する特長がある。The electrolyte for lead-acid batteries does not require a retainer in the form of a sheet or a plane, and therefore has the advantage that it can be easily deformed in any shape or pattern and that the adhesion with the electrode plate is improved.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、このよ
うにＳｉＯ2 を主成分とした粉体と希硫酸とを混合し
て、希硫酸を非流動化させた鉛蓄電池用電解質では、内
部抵抗が大きくなり、放電持続時間が短い問題点があっ
た。However, in the electrolyte for a lead storage battery in which the dilute sulfuric acid is made non-fluidized by mixing the powder containing SiO 2 as a main component with the dilute sulfuric acid as described above, the internal resistance is large. Therefore, there is a problem that the discharge duration is short.
【０００７】本発明の目的は、希硫酸が非流動化されて
いるタイプであっても、内部抵抗を小さくでき、放電持
続時間を長くすることができる鉛蓄電池用電解質を提供
することにある。An object of the present invention is to provide an electrolyte for a lead storage battery, which can reduce the internal resistance and prolong the discharge duration even if the dilute sulfuric acid is non-fluidized.
【０００８】[0008]
【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、本発明はシリカあるいはシリ
カを主成分とする耐酸性の粉体と希硫酸とが混合され、
前記希硫酸が非流動化されている鉛蓄電池用電解質にお
いて、前記シリカあるいはシリカを主成分とする耐酸性
の粉体として、平均粒子径が75μｍ以上の粒子と１μｍ
以下の粒子との混合体が用いられていることを特徴とす
る。Means for Solving the Problems To explain the constitution of the present invention for achieving the above object, the present invention is based on the fact that silica or an acid-resistant powder containing silica as a main component and dilute sulfuric acid are mixed,
In the electrolyte for a lead storage battery in which the dilute sulfuric acid is non-fluidized, the silica or the acid-resistant powder containing silica as a main component has particles having an average particle size of 75 μm or more and 1 μm.
It is characterized in that a mixture with the following particles is used.
【０００９】[0009]
【作用】このように希硫酸を非流動化させるシリカある
いはシリカを主成分とする耐酸性の粉体として、平均粒
子径が75μｍ以上の粒子と１μｍ以下の粒子との混合体
を用いると、内部抵抗値が小さくなり、チクソトロピッ
ク性が優れ、鉛蓄電池の放電持続時間を長くすることが
できる。When a mixture of particles having an average particle diameter of 75 μm or more and particles having an average particle diameter of 1 μm or less is used as the silica or the acid-resistant powder containing silica as a main component, which makes the dilute sulfuric acid non-fluid, The resistance value becomes small, the thixotropic property is excellent, and the discharge duration of the lead storage battery can be lengthened.
【００１０】[0010]
【実施例】以下、本発明に係る鉛蓄電池用電解質の一実
施例を詳細に説明する。EXAMPLES An example of the electrolyte for a lead storage battery according to the present invention will be described in detail below.
【００１１】鉛蓄電池用電解質として、表１に示すタイ
プ１〜タイプ５の５つのタイプの鉛蓄電池用電解質を作
成した。高分散シリカは、粒子径が50〜100 μｍ（平均
粒径75μｍ）と粒径大のものと、粒子径が10〜30μｍ
（平均粒径20μｍ）と粒径小のものと２種類を準備し、
さらに粒子径が１μｍ以下の超微粒子であるコロイダル
シリカを準備した。As lead-acid battery electrolytes, five types of lead-acid battery electrolytes of types 1 to 5 shown in Table 1 were prepared. Highly dispersed silica has a large particle size of 50 to 100 μm (average particle size of 75 μm) and a particle size of 10 to 30 μm.
Prepare two types (average particle size 20 μm) and small particle size,
Further, colloidal silica, which is ultrafine particles having a particle diameter of 1 μm or less, was prepared.
【００１２】[0012]
【表１】 評価項目として、取扱いの容易さを知るために電解質の
「粘度」を調べた。また、電解質の「抵抗」を調べた。
粘度は、該表１から明らかなように、シリカ粒子が非常
に小さいコロイダルシリカを添加することにより大きく
なり、粒子径の大きい高分散シリカでは粒子径の大小で
は粘度はあまり変化しないことが判明した。一方、電解
質の多孔性の目安となる抵抗値は、該表１から明らかな
ように、逆に高分散シリカの粒子径が大きい場合ほど小
さくなっている。[Table 1] As an evaluation item, the "viscosity" of the electrolyte was examined in order to know the ease of handling. Also, the "resistance" of the electrolyte was examined.
As is clear from Table 1, the viscosity was increased by adding colloidal silica having very small silica particles, and it was found that the viscosity of highly dispersed silica having a large particle diameter does not significantly change with the size of the particle diameter. . On the other hand, as is clear from Table 1, the resistance value, which is a measure of the porosity of the electrolyte, is smaller on the contrary when the particle size of the highly dispersed silica is larger.
【００１３】次に、生産性と本電解質の安定性を知るた
めに、ずり速度を変化させた時の粘度の変化を調べた。
その結果を図１に示す。図中の直線の傾きが大きいほど
その溶液はチクソトロピック性に優れていることを示し
ており、生産性，電解質の安定性に優れていると言え
る。タイプ１〜タイプ５の中では、タイプ１の傾きが大
きく、チクソトロピック性に優れている。Next, in order to know the productivity and the stability of the present electrolyte, the change in viscosity when the shear rate was changed was examined.
The result is shown in FIG. The larger the slope of the straight line in the figure, the better the thixotropic property of the solution, which means that the productivity and the stability of the electrolyte are excellent. Among the types 1 to 5, the inclination of type 1 is large and the thixotropic property is excellent.
【００１４】図２は、タイプ１〜タイプ５の電解質を使
用して作製した鉛蓄電池を５時間率放電し、その容量比
較を行った結果を示す。この場合、各電池は正負極間を
一定に保ち、その隙間に本電解質を流入した。電解質の
量は、その重量により確認した。FIG. 2 shows the results of comparing the capacities of lead-acid batteries manufactured using the type 1 to type 5 electrolytes after discharging them for 5 hours. In this case, in each battery, the space between the positive and negative electrodes was kept constant, and the electrolyte was flown into the gap. The amount of electrolyte was confirmed by its weight.
【００１５】この結果、５つのタイプのうちタイプ１が
最も放電持続時間が長く、以下タイプ３，タイプ４，タ
イプ２，タイプ５の順に放電持続時間が短くなった。As a result, of the five types, the type 1 had the longest discharge duration, and the discharge duration became shorter in the following order of type 3, type 4, type 2, and type 5.
【００１６】これらの結果は、表１の抵抗測定結果とほ
ぼ同様の傾向を示している。つまり、使用したシリカ粒
子の粒子径が大きいほど、また混在するシリカ粒子の粒
子径が大きいほど、生産性，溶液安定性に優れ、しかも
電池性能的にも優れた電解質が得られている。These results show almost the same tendency as the resistance measurement results in Table 1. That is, the larger the particle size of the silica particles used and the larger the particle size of the mixed silica particles, the more excellent the productivity, the solution stability, and the battery performance are obtained.
【００１７】上記実施例では、耐酸性の粉体としてシリ
カを用いた場合について説明したが、シリカ以外の耐酸
性の粉体を用いても同様の効果を得ることができる。In the above embodiment, the case where silica is used as the acid resistant powder has been described, but the same effect can be obtained by using acid resistant powder other than silica.
【００１８】[0018]
【発明の効果】以上説明したように本発明に係る鉛蓄電
池用電解質は、希硫酸を非流動化させるシリカあるいは
シリカを主成分とする耐酸性の粉体として、平均粒子径
が75μｍ以上の粒子と１μｍ以下の粒子との混合体を用
いたので、内部抵抗値が小さくなり、チクソトロピック
性が優れ、鉛蓄電池の放電持続時間を長くすることがで
きる。As described above, the electrolyte for a lead storage battery according to the present invention is silica having a non-fluidizing effect of dilute sulfuric acid or acid-resistant powder containing silica as a main component and having an average particle size of 75 μm or more. And a particle of 1 μm or less are used, the internal resistance value becomes small, the thixotropic property is excellent, and the discharge duration of the lead storage battery can be lengthened.
【図１】タイプ１〜タイプ５の電解質の粘度とずり速度
の関係を示した線図である。FIG. 1 is a diagram showing the relationship between the viscosity and the shear rate of type 1 to type 5 electrolytes.
【図２】タイプ１〜タイプ５の電解質を用いた鉛蓄電池
の５時間率放電の結果を示した線図である。FIG. 2 is a diagram showing a result of 5-hour rate discharge of a lead storage battery using type 1 to type 5 electrolytes.
Claims (1)
酸性の粉体と希硫酸とが混合され、前記希硫酸が非流動
化されている鉛蓄電池用電解質において、 前記シリカあるいはシリカを主成分とする耐酸性の粉体
として、平均粒子径が75μｍ以上の粒子と１μｍ以下の
粒子との混合体が用いられていることを特徴とする鉛蓄
電池用電解質。1. An electrolyte for a lead storage battery, wherein silica or acid-resistant powder containing silica as a main component and dilute sulfuric acid are mixed, and said dilute sulfuric acid is non-fluidized, wherein said silica or silica is the main component. An electrolyte for a lead storage battery, wherein a mixture of particles having an average particle size of 75 μm or more and particles having an average particle size of 1 μm or less is used as the acid resistant powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4220015A JP2921284B2 (en) | 1992-08-19 | 1992-08-19 | Electrolyte for lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4220015A JP2921284B2 (en) | 1992-08-19 | 1992-08-19 | Electrolyte for lead-acid battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0668902A true JPH0668902A (en) | 1994-03-11 |
| JP2921284B2 JP2921284B2 (en) | 1999-07-19 |
Family
ID=16744601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4220015A Expired - Lifetime JP2921284B2 (en) | 1992-08-19 | 1992-08-19 | Electrolyte for lead-acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2921284B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61129268U (en) * | 1985-01-31 | 1986-08-13 |
-
1992
- 1992-08-19 JP JP4220015A patent/JP2921284B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61129268U (en) * | 1985-01-31 | 1986-08-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2921284B2 (en) | 1999-07-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990330 |