JPS5937655A - Sealed lead storage battery - Google Patents
Sealed lead storage batteryInfo
- Publication number
- JPS5937655A JPS5937655A JP57148679A JP14867982A JPS5937655A JP S5937655 A JPS5937655 A JP S5937655A JP 57148679 A JP57148679 A JP 57148679A JP 14867982 A JP14867982 A JP 14867982A JP S5937655 A JPS5937655 A JP S5937655A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- electrode plate
- vertical grooves
- parts
- sealed lead
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/14—Electrodes for lead-acid accumulators
-
- 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)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は密閉式鉛蓄電池に関するものであろう従来例の
構成とその問題点
ポータプル機器等の電源あるいはバックアップ電源とし
て用いられる密閉式鉛蓄電池は、取扱いが容易で、かつ
他の二次電池と比較して安価であるなどの長所を有して
いる。しかし、流通過程における保存中に自己放電か生
じ、さらに充電後の容量回復性が低いという欠点がある
。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a sealed lead-acid battery.The structure of a conventional example and its problems Sealed lead-acid batteries used as a power source or a backup power source for portable equipment, etc. It has the advantages of being easy to manufacture and being inexpensive compared to other secondary batteries. However, they have the disadvantage that self-discharge occurs during storage during distribution and that capacity recovery after charging is low.
従来この種の鉛蓄電池における極板は、鉛合金等によっ
て作られた格子体に、酸化鉛粉と希硫酸等よりなるペー
ストを均一に充填し、化成後に活物質とする方法がとら
れていた。この方法によれば、ペーストを充填する際の
ペースト充填密度、化成条件等によって極板表面状態に
差が生じやすく、この差が電池性能に大きな影響を与え
ていだ０発明の目的
そこで、本発明はこの極板表面状態の電池性能へ与える
影響を小さくし、加えて保存中の自己放電を低減させる
ことを目的としている。Conventionally, the electrode plates in this type of lead-acid battery were made by filling a lattice made of lead alloy etc. with a paste made of lead oxide powder and dilute sulfuric acid, etc., and using it as an active material after chemical formation. . According to this method, differences in the surface condition of the electrode plate tend to occur depending on the paste filling density, chemical formation conditions, etc. when filling the paste, and this difference has a large effect on battery performance. The purpose of this is to reduce the influence of this electrode plate surface condition on battery performance, and also to reduce self-discharge during storage.
極板表面状態により、セパレータと極板表面との密着性
が不十分なものとなり、本発明の対象とする電解液量を
規制した密閉式の鉛蓄電池においては特にその影響は太
きい。Depending on the surface condition of the electrode plate, the adhesion between the separator and the electrode plate surface may be insufficient, and this effect is particularly severe in sealed lead-acid batteries in which the amount of electrolyte is regulated, which is the object of the present invention.
発明の構成
本発明は上記の目的達成のため、極板表面に溝をつける
ことを特徴とする。こうすることによって、セパレータ
と極板表面との間には密着性の良い部分と、密着性が低
く疎になった部分か混在することになる。Structure of the Invention In order to achieve the above object, the present invention is characterized in that grooves are formed on the surface of the electrode plate. By doing this, there will be a mixture of parts with good adhesion and parts with low adhesion and sparseness between the separator and the surface of the electrode plate.
電池性能においては、セパレータと極板表面との反応界
面には十分な電解液が存在し、かつセパレータと極板表
面とは良好な密着性を有することか必要である。従来、
極板とセパレータとに均一な圧力を加え、極板とセパレ
ータとの密着性をはかるとともに、電解液の分布か均一
となるようになされてきだ。しかしながら、この密着性
およびセパレータにおける電解液の保持力とは相反する
面をもつため双方とも十分なものとすることは容易では
なく、自己放電性等の電池性能にはまた改善の余地が残
されていたつ
本発明では、極板表面に溝をつけることにより凹凸部を
生じさせて、第一にセパレータと極板トの筬触面積が増
大を図ったものである。これにより従来の厚みが均一な
極板と比べて見かけの表面積が増加し、充放電における
電流密度が低くなり、活物質の利用率が向上する。その
ため、より少ない活物質で従来と同じ放電容量を得るこ
とができる。第二に、横板表面の溝の部分及びこの部分
に対応したセパレータに加えられる圧力は他の部分より
も低くなるだめ、この部分に電解液が集められ、セパレ
ータと極板との反応界面に十分な電解液が保持されるよ
うになる。第三に、反応界面におけるセパレータの保液
性が良いため、イオンの拡散が容′易に行なわれるよう
になり、自己放電時に電解液中の硫酸か消費されても極
板内部ヘバルクから硫酸が供給され、極板内部のＰＨの
出昇を抑制できる。第四に、量的に規制された電解液が
反応界面に十分に存在するため、電解液の有効利用が可
能となる。これらの利点により、自己放電後の充電容量
回復性の向上とともに、電池性能の向上をはかることも
可能である。In terms of battery performance, it is necessary that sufficient electrolyte exists at the reaction interface between the separator and the electrode plate surface, and that the separator and the electrode plate surface have good adhesion. Conventionally,
Uniform pressure is applied to the electrode plates and the separator to ensure close contact between the electrode plates and the separator, and to ensure uniform distribution of the electrolyte. However, since this adhesion and the ability to hold the electrolyte in the separator are contradictory, it is not easy to ensure that both are sufficient, and there is still room for improvement in battery performance such as self-discharge. In the present invention, grooves are formed on the surface of the electrode plate to create uneven portions, and firstly, the contact area between the separator and the electrode plate is increased. This increases the apparent surface area compared to conventional electrode plates with uniform thickness, lowers the current density during charging and discharging, and improves the utilization rate of the active material. Therefore, the same discharge capacity as before can be obtained with less active material. Second, the pressure applied to the groove part on the surface of the horizontal plate and the separator corresponding to this part is lower than that in other parts, so the electrolyte is collected in this part and reaches the reaction interface between the separator and the electrode plate. Enough electrolyte will be retained. Third, because the separator has good liquid retention properties at the reaction interface, ions can easily diffuse, and even if sulfuric acid in the electrolyte is consumed during self-discharge, sulfuric acid will not be released from the bulk inside the electrode plate. It is possible to suppress the rise and rise of PH inside the electrode plate. Fourth, since a quantitatively regulated amount of electrolytic solution is sufficiently present at the reaction interface, effective use of the electrolytic solution is possible. Due to these advantages, it is possible to improve the recovery of charge capacity after self-discharge and also to improve battery performance.
さらにまた、反応界面の増大により、電池を過放電させ
た場合の充電による容量回復性においても、充電時にお
ける充電電流を増大させることができるだめ、容量回復
性の向上にも効果がある。Furthermore, by increasing the reaction interface, it is possible to increase the charging current during charging even when the battery is over-discharged, which is effective in improving capacity recovery.
実施例の説明 次に本発明の詳細な説明する。Description of examples Next, the present invention will be explained in detail.
Ｐｂ−Ｃａ合金よりなる格子体に、酸化鉛、希硫酸等よ
りなるペーストを充填した正極板２枚と、酸化鉛、希硫
酸、硫酸バリウム等よりなるペース４トを充填した負極
板３枚を、繊維径１０ ｐｍ以下のガラス繊維からなる
マット状のセパレータを用いて組み合わせ、希硫酸等を
電解液としだ１ｏ時間率容量２Ａｈ の１２Ｖ電池Ａを
構成したつなお使用した極板１は第１図及び第２図に示
す如く極板表面に縦方向の溝２を凹部３と凸部４とが交
互に位置するように形成した。詳しくは正極板にあって
は厚さ２．５扉の極板１の表面に深さ０．２胴の溝２を
３ｍｍ間隔で縦方向に設け、負極板にあっては厚さ１．
５扉の極板表面に深さ０．２ｍｍの溝を同様の間隔で縦
方向に設けた。比較のため、正極板の厚さ２．５脳、負
極板の厚さ１．５咽とした従来電池Ｂを用意し、両者の
放電性能を比較した。第３図には両者の０．１０放電に
よる放電容量を示しだが、本発明品への方が電圧、容量
共に従来品Ｂより優れている。Two positive electrode plates filled with a paste made of lead oxide, dilute sulfuric acid, etc. and three negative electrode plates filled with four pastes made of lead oxide, dilute sulfuric acid, barium sulfate, etc. are placed in a grid made of Pb-Ca alloy. , a mat-like separator made of glass fiber with a fiber diameter of 10 pm or less was used, and dilute sulfuric acid was used as an electrolyte to form a 12V battery A with a 10 hour rate capacity of 2Ah. As shown in the figure and FIG. 2, vertical grooves 2 were formed on the surface of the electrode plate so that concave portions 3 and convex portions 4 were alternately located. Specifically, for the positive electrode plate, grooves 2 with a depth of 0.2 mm are provided in the vertical direction at intervals of 3 mm on the surface of the electrode plate 1 with a thickness of 2.5 mm, and for the negative electrode plate, grooves 2 with a depth of 1 mm are provided on the surface of the electrode plate 1 with a thickness of 1.5 mm.
Grooves with a depth of 0.2 mm were provided in the vertical direction at similar intervals on the surface of the electrode plate of 5 doors. For comparison, a conventional battery B was prepared in which the positive electrode plate had a thickness of 2.5 mm and the negative electrode plate had a thickness of 1.5 mm, and the discharge performance of the two was compared. FIG. 3 shows the discharge capacity of both products based on 0.10 discharge, and the product of the present invention is superior to the conventional product B in both voltage and capacity.
まだ、６０℃に２か月保存した後の自己放電試験による
残存容量と、その後の充電による容量回復率を第４図、
第５図に示しだ。いずれの場合も本発明品Ａの方が従来
品Ｂよりも優れていることが明らかである。Figure 4 shows the remaining capacity in a self-discharge test after storage at 60°C for two months and the capacity recovery rate after subsequent charging.
This is shown in Figure 5. In both cases, it is clear that product A of the present invention is superior to conventional product B.
以上の実施例が示すように、これらの改良により、電／
１１）性能士・・、ｌ二び自己放電（Ｊ＋能の改善が可
能とな−、た。As shown in the above examples, these improvements have enabled
11) Performance expert: It is possible to improve self-discharge (J+ performance).
発明の効果
このように本発明では極板表面の縦方向に溝をつけるこ
とにより、充電時に正極から発生する酸素ガスを負極に
導びきやすくし、負極と反応させて吸収しやすくなる。Effects of the Invention As described above, in the present invention, by forming grooves in the vertical direction on the surface of the electrode plate, oxygen gas generated from the positive electrode during charging is easily guided to the negative electrode, and is easily absorbed by reacting with the negative electrode.
さらに、電解液を電池に注入する際、溝により、電解液
が注入しやすい等の長所をもち、電解液量が規制された
密閉式鉛蓄電池の性能向上に有効である。Furthermore, when injecting the electrolyte into the battery, the grooves make it easy to inject the electrolyte, which is effective in improving the performance of sealed lead-acid batteries in which the amount of electrolyte is regulated.
第１図は本発明の実施例における密閉式鉛蓄電池に用い
る極板の斜視図、第２図は第１図の■−■′純に沿った
断面図、第３図は本発明の密閉式鉛蓄電池の放電特性を
示す図、第４図は保存後における残存容量を示す特性図
、第５図は保存後の充電による容量回復特性を示す図で
ある。
１ ・・・極板、２・・・・・溝、３・・・・・凹部、
４・・・・・凸部。
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
ｏ ５ １０
ｔＪ父電吟閏（ｙＩ間）
第４図
０ （２
仔存期間ζ月）
第５図
０ ／ ２
碌８期間（Ｆ４）Fig. 1 is a perspective view of an electrode plate used in a sealed lead-acid battery according to an embodiment of the present invention, Fig. 2 is a sectional view taken along line ■-■' of Fig. 1, and Fig. 3 is a perspective view of an electrode plate used in a sealed lead-acid battery according to an embodiment of the present invention. FIG. 4 is a diagram showing the discharge characteristics of a lead-acid battery, FIG. 4 is a characteristic diagram showing the remaining capacity after storage, and FIG. 5 is a diagram showing the capacity recovery characteristics by charging after storage. 1... Electrode plate, 2... Groove, 3... Concave portion,
4...Protrusion. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Fig. 2 Fig. 3 o 5 10 tJ Chichiden Ginjun (between yI) Fig. 4 0 (2 Child survival period ζ months) Fig. 5 0 / 2 Roku8 period (F4)
Claims (1)
、充電時に正極板から発生する酸素ガスを負極板に吸収
させる密閉構造を備え、極板表面に縦方向の溝をつけた
ことを特徴とする密閉式鉛蓄電池。In addition to regulating the amount of electrolyte so that there is no free electrolyte, it has a sealed structure that allows the negative electrode plate to absorb oxygen gas generated from the positive electrode plate during charging, and features vertical grooves on the surface of the electrode plate. A sealed lead-acid battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57148679A JPS5937655A (en) | 1982-08-26 | 1982-08-26 | Sealed lead storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57148679A JPS5937655A (en) | 1982-08-26 | 1982-08-26 | Sealed lead storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5937655A true JPS5937655A (en) | 1984-03-01 |
Family
ID=15458177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57148679A Pending JPS5937655A (en) | 1982-08-26 | 1982-08-26 | Sealed lead storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5937655A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5079111A (en) * | 1989-02-24 | 1992-01-07 | Caltec International, Inc. | Method for the manufacture of lead-acid batteries and an associated apparatus and associated lead-acid battery |
| JPH1186870A (en) * | 1997-09-03 | 1999-03-30 | Japan Storage Battery Co Ltd | Electrochemical battery |
-
1982
- 1982-08-26 JP JP57148679A patent/JPS5937655A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5079111A (en) * | 1989-02-24 | 1992-01-07 | Caltec International, Inc. | Method for the manufacture of lead-acid batteries and an associated apparatus and associated lead-acid battery |
| US5276960A (en) * | 1989-02-24 | 1994-01-11 | Caltec International, Inc. | Method for the manufacture of lead-acid batteries and an associated apparatus and associated lead-acid battery |
| JPH1186870A (en) * | 1997-09-03 | 1999-03-30 | Japan Storage Battery Co Ltd | Electrochemical battery |
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