JPH0677449B2 - Lead acid battery - Google Patents
Lead acid batteryInfo
- Publication number
- JPH0677449B2 JPH0677449B2 JP57037439A JP3743982A JPH0677449B2 JP H0677449 B2 JPH0677449 B2 JP H0677449B2 JP 57037439 A JP57037439 A JP 57037439A JP 3743982 A JP3743982 A JP 3743982A JP H0677449 B2 JPH0677449 B2 JP H0677449B2
- Authority
- JP
- Japan
- Prior art keywords
- lead
- battery
- retaining layer
- conductive liquid
- conductive
- 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 - Lifetime
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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Description
【発明の詳細な説明】 この発明は鉛蓄電池、特に遊離の電解液が実質的に存在
しないように電解液量を制限した形体のいわゆる、リテ
ナー式鉛蓄電池に関するものであり、電解液の利用率を
改善して電池性能の向上を計るものである。The present invention relates to a lead-acid battery, and more particularly to a so-called retainer-type lead-acid battery in a form in which the amount of the electrolyte is limited so that the free electrolyte is substantially absent. To improve the battery performance.
まず、この種電池の放電反応の挙動について説明する
と、放電初期の段階では極板表面における電解液濃度
と、極板に密接せるセパレータに含浸、保持された電解
液濃度とは同じであるが、放電を開始すると反応は極板
表面から進行するため極板表面における電解液濃度が低
下して濃度勾配が生じ、セパレータに含浸、保持されて
いる電解液が極板表面に拡散されることになる。つま
り、極板で消費される電解液量だけセパレータより拡散
によつて補充されることになる。First, explaining the behavior of the discharge reaction of this type of battery, in the initial stage of discharge, the concentration of the electrolytic solution on the surface of the electrode plate is the same as the concentration of the electrolytic solution impregnated and held in the separator in close contact with the electrode plate, When the discharge is started, the reaction proceeds from the surface of the electrode plate, so the concentration of the electrolytic solution on the surface of the electrode plate decreases and a concentration gradient occurs, and the electrolytic solution impregnated in and held in the separator diffuses to the surface of the electrode plate. . That is, the amount of the electrolyte solution consumed by the electrode plate is replenished from the separator by diffusion.
そして、周知の如く鉛蓄電池における放電反応は陽極板
ではその活物質がPbO2（二酸化鉛）からPbSO4（硫酸
鉛）へ、また陰極板ではPb（鉛）からPbSO4に変化する
ものである。PbO2あるいはPb活物質層からなる場合に比
して、PbSO4層の孔径が小なるため、PbSO4が生成するに
伴つて極板深部への電解液供給が円滑に行なわれず、電
解液量に見合つた容量を取出し得ないという不都合があ
つた。And, as is well known, the discharge reaction in a lead-acid battery changes its active material from PbO 2 (lead dioxide) to PbSO 4 (lead sulfate) on the anode plate and from Pb (lead) to PbSO 4 on the cathode plate. . Since the pore size of the PbSO 4 layer is smaller than that of the PbO 2 or Pb active material layer, the electrolyte solution is not smoothly supplied to the deep part of the electrode plate as PbSO 4 is generated, and the electrolyte solution amount There was an inconvenience that it was not possible to take out the capacity commensurate with.
かかる不都合を解消すべく、極板に導電性保液層を配設
して、極板内への電解液供給を容易にし、電解液の利用
率を改善して電池性能の向上を計る提案は既になされて
いる（昭和56年特許願第137941号に詳しい）。In order to eliminate such inconvenience, a conductive liquid retaining layer is provided on the electrode plate to facilitate the supply of the electrolytic solution into the electrode plate and to improve the utilization rate of the electrolytic solution to improve the battery performance. It has already been done (detailed in Japanese Patent Application No. 137941 in 1981).
しかしながら、上述したものは、電池の過充電等によ
り、導電性保液層が酸化作用を受け、カーボンブラツク
などの導電性構成部材が膨張し、体積変化しその結果、
集電体と導電層との密着性が低下して、電池特性が劣化
するという難点があつた。However, as described above, due to the overcharge of the battery, the conductive liquid-retaining layer is oxidized, the conductive component member such as carbon black expands, and as a result, the volume changes,
There is a problem that the adhesion between the current collector and the conductive layer is deteriorated and the battery characteristics are deteriorated.
本発明者等は、かかる点に鑑み鋭意検討した結果、導電
性保液層を導電性粉末と、ポリテトラフルオロエチレン
（以下、P.T.F.E.という）で構成することにより、導電
性粉末が過充電等による酸化作用のために起こる体積変
化を防止抑制する有効な手段となることを見出した。The inventors of the present invention have made extensive studies in view of such a point, and as a result, the conductive liquid-retaining layer is composed of conductive powder and polytetrafluoroethylene (hereinafter referred to as PTFE), so that the conductive powder is overcharged. It has been found that it becomes an effective means for preventing and suppressing the volume change caused by the oxidizing action.
この発明は上記事実に基づいてなされたもので、極板の
活物質層と集電体との間に配設される導電性保液層を、
ポリテトラフルオロエチレン（P.T.F.E.）と導電性粉末
で構成することにより、集電体と導電性保液層との密着
性を良好に維持し、サイクル寿命特性などが向上する鉛
蓄電池を提供するものである。This invention has been made on the basis of the above facts, the conductive liquid retaining layer disposed between the active material layer of the electrode plate and the current collector,
By providing polytetrafluoroethylene (PTFE) and conductive powder, it is possible to provide a lead-acid battery that maintains good adhesion between the current collector and the conductive liquid retaining layer and improves cycle life characteristics. is there.
以下、この発明の一実施例について詳述する。An embodiment of the present invention will be described in detail below.
陽極板(1)および陰極板(2)は、それぞれ鋳造、打抜きあ
るいはエキスパンド加工により得た鉛−カルシウム合金
を50×50×2mmおよび50×50×1mmの寸法に裁断したるも
のを陽極集電体（1a）と陰極集電体（2a）として用い、
これら集電体の両面に導電性粉末、例えば、カーボンブ
ラツクに、P.T.F.E.粉末を混合して、らい潰機等によ
り、せん断力を加えて、このP.T.F.E.を繊維化せしめて
カーボンブラツクなどの導電性粉末を保持させたのち、
増粘剤であるポリエチレンオキサイド溶液を用いてペー
スト状にしたものを、ローラにより厚み約0.5mmに圧延
した導電性保液層（３）を夫々圧着する。そして、この
保液層上にPbO（一酸化鉛）と水とよりなる活物質ペー
ストをローラにより厚み1.0mmおよび0.7mmに圧延した寸
法50×50mmのシート状活物質層（1b）および（2b）を圧
着して極板を構成し、それぞれの厚みは2.4mmおよび1.2
mmである。For the anode plate (1) and cathode plate (2) , the lead-calcium alloy obtained by casting, punching or expanding is cut into 50 × 50 × 2 mm and 50 × 50 × 1 mm dimensions, respectively. Used as the body (1a) and the cathode current collector (2a),
Conductive powder on both sides of these collectors, for example, carbon black, mixed with PTFE powder, shear force is applied by a crushing machine, etc., and this PTFE is made into fibrous and conductive powder such as carbon black. After holding
A conductive liquid retaining layer (3), which was made into a paste by using a polyethylene oxide solution as a thickener, was rolled by a roller to a thickness of about 0.5 mm, and each was pressure-bonded. Then, an active material paste composed of PbO (lead monoxide) and water was rolled on the liquid-retaining layer with a roller to a thickness of 1.0 mm and 0.7 mm, and sheet-like active material layers (1b) and (2b) having a size of 50 × 50 mm were formed. ) Is crimped to form the electrode plate, and the thickness of each is 2.4 mm and 1.2 mm.
mm.
以上のようにして得た一枚の陽極板(1)と２枚の陰極板
(2)(2)をガラス繊維セパレータ（４）を介して交互に積
重した電極群を、樹脂製の電槽（５）内に介挿し、つい
で比重1.30の硫酸電解液を10cc注液して極板およびセパ
レータに含浸、保持せしめたのち、陰、陽極外部端子
（６）（７）を取付けた電槽蓋（８）を装着して容量1A
Hの鉛蓄電池を得た。そして、この電池を化成して使用
可能とする。One anode plate (1) and two cathode plates obtained as described above
(2) Insert the electrode groups in which (2) were stacked alternately via the glass fiber separator (4) into the battery case (5) made of resin, and then inject 10 cc of sulfuric acid electrolyte with a specific gravity of 1.30. After the electrode plate and separator have been impregnated and held, the battery compartment lid (8) with the negative and positive external terminals (6) and (7) is attached, and the capacity is 1A.
I got an H lead acid battery. Then, this battery is formed into a usable state.
なお、実施例では、陰、陽極板の双方に導電性保液層を
配設する場合を述べたが、一方の極板にのみ適用しても
差支えない。In the examples, the case where the conductive liquid-retaining layer is provided on both the negative electrode plate and the positive electrode plate is described, but it may be applied to only one electrode plate.
第２図は本発明電池（Ａ）と、導電性保液層にP.T.F.E.
粉末を混合しないことを除いて他は本発明電池と同様の
比較電池（Ｂ）および導電性保液層を具備しないことを
除いて他は本発明電池と同様の比較電池（Ｃ）とのサイ
クル寿命特性比較図である。FIG. 2 shows the battery (A) of the present invention and PTFE in the conductive liquid retaining layer.
Cycle with Comparative Battery (B) which is the same as the battery of the present invention except that the powder is not mixed, and Comparative Battery (C) which is the same as the battery of the present invention except that the conductive liquid retaining layer is not provided. It is a life characteristic comparison chart.
第２図より本発明電池によれば、サイクル特性が安定
し、サイクル寿命が向上していることがわかる。It can be seen from FIG. 2 that the battery of the present invention has stable cycle characteristics and improved cycle life.
本発明電池が比較電池に比してサイクル寿命特性が向上
するのは、P.T.F.E.粉末が導電性粉末の過充電等による
酸化作用のために生じる膨張による体積変化を防止抑制
し、集電体と導電性保液層の密着性能を良好な状態で維
持できるからである。The battery of the present invention has improved cycle life characteristics as compared with the comparative battery because the PTFE powder suppresses and suppresses the volume change due to expansion caused by the oxidation effect due to overcharge of the conductive powder, and the current collector and the conductive material. This is because the adhesion performance of the liquid retaining layer can be maintained in a good state.
なお、導電性粉末に混合するP.T.F.E.粉末の量は、P.T.
F.E.の性質より0.5〜20.0重量％が良い。これは、P.T.
F.E.粉末が0.5重量％以下であると、P.T.F.E.粉末の結
合力が乏しく、導電性粉末を保持することができなく、
20.0重量％以上であると、P.T.F.E.の絶縁性、撥水性に
より導電性保液層の機能を阻害するからである。また、
電池特性を考慮すると、P.T.F.E.粉末の量は2.0％〜10.
0重量％がより好ましい。The amount of PTFE powder mixed with the conductive powder is PT
From 0.5 to 20.0% by weight is better than FE properties. This is PT
When the FE powder content is 0.5% by weight or less, the bonding strength of the PTFE powder is poor and the conductive powder cannot be retained,
This is because when the content is 20.0% by weight or more, the function of the conductive liquid retaining layer is hindered by the insulating property and water repellency of PTFE. Also,
Considering battery characteristics, the amount of PTFE powder is 2.0% ~ 10.
0% by weight is more preferred.
以上説明したように、本発明電池によれば、極板の活物
質層と集電体との間に配設される導電性保液層を導電性
粉末と、ポリテトラフルオロエチレンで構成しているの
で、放電時、極板中心部への電解液供給が容易に行なわ
れ、電解液の利用率が改善され電池容量が増大するとと
もに、集電体と導電性保液層との密着性を良好に維持し
てサイクル寿命特性が向上するなどその工業的価値は極
めて大きい。As described above, according to the battery of the present invention, the conductive liquid-retaining layer disposed between the active material layer of the electrode plate and the current collector is composed of conductive powder and polytetrafluoroethylene. Since the electrolyte solution is easily supplied to the center of the electrode plate during discharge, the utilization rate of the electrolyte solution is improved, the battery capacity is increased, and the adhesion between the current collector and the conductive liquid retaining layer is improved. Its industrial value is extremely high, such as good maintenance and improved cycle life characteristics.
第１図は本発明の一実施例を示す電池の縦断面図、第２
図は本発明電池（Ａ）と、比較電池（Ｂ）（Ｃ）とのサ
イクル寿命特性比較図である。(1) ……陽極板、（1a）……陽極集電体、（1b）……陽
極活物質層、(2)……陰極板、（2a）……陰極集電体、
（2b）……陰極活物質層、（３）……導電性保液層、
（４）……セパレータ、（５）……電槽、（８）……電
槽蓋。FIG. 1 is a longitudinal sectional view of a battery showing an embodiment of the present invention, FIG.
The figure is a comparison diagram of cycle life characteristics of the battery (A) of the present invention and the comparative batteries (B) and (C). (1) …… Anode plate, (1a) …… Anode current collector, (1b) …… Anode active material layer, (2) …… Cathode plate, (2a) …… Cathode current collector,
(2b) …… Cathode active material layer, (3) …… Conductive liquid retaining layer,
(4) …… Separator, (5) …… Battery case, (8) …… Battery case lid.
Claims (2)
セパレータと、前記極板およびセパレータに含浸保持さ
れ遊離の電解液が実質的に存在しないように制限された
量の電解液とを備え、少なくとも一方の前記極板は活物
質層と鉛又は鉛合金よりなる集電体との間に導電性保液
層が配設されてなる鉛蓄電池であつて、前記導電性保液
層を導電性粉末とポリテトラフルオロエチレンで構成し
たことを特徴とする鉛蓄電池。1. An anion plate, an anode plate, a separator interposed between these electrode plates, and a limited amount of electrolytic solution impregnated and held in the electrode plate and the separator so that there is substantially no free electrolytic solution. Wherein the at least one of the electrode plates is a lead storage battery in which a conductive liquid retaining layer is disposed between an active material layer and a current collector made of lead or a lead alloy, the conductive liquid retaining layer A lead-acid battery characterized in that is composed of conductive powder and polytetrafluoroethylene.
ロエチレンの量を、 0.5〜20.0重量％ にしたことを特徴とする特許請求の範囲第１項記載の鉛
蓄電池。2. The lead acid battery according to claim 1, wherein the amount of polytetrafluoroethylene contained in the conductive liquid retaining layer is 0.5 to 20.0% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57037439A JPH0677449B2 (en) | 1982-03-09 | 1982-03-09 | Lead acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57037439A JPH0677449B2 (en) | 1982-03-09 | 1982-03-09 | Lead acid battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58154171A JPS58154171A (en) | 1983-09-13 |
| JPH0677449B2 true JPH0677449B2 (en) | 1994-09-28 |
Family
ID=12497537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57037439A Expired - Lifetime JPH0677449B2 (en) | 1982-03-09 | 1982-03-09 | Lead acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0677449B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE8403704L (en) * | 1984-07-13 | 1986-01-14 | Tudor Ab | END OF LEAD BATTERY FOR OXYGEN RECOVERY |
| JPS61179068A (en) * | 1985-02-04 | 1986-08-11 | Yuasa Battery Co Ltd | Enclosed lead storage battery |
| JP7213486B2 (en) * | 2018-01-31 | 2023-01-27 | 独立行政法人国立高等専門学校機構 | Positive electrode for lead-acid battery and lead-acid battery using the same |
| CN113994521A (en) | 2019-05-31 | 2022-01-28 | 株式会社杰士汤浅国际 | Lead-acid battery |
-
1982
- 1982-03-09 JP JP57037439A patent/JPH0677449B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58154171A (en) | 1983-09-13 |
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