JPH02160374A - Sealed type lead-acid battery - Google Patents
Sealed type lead-acid batteryInfo
- Publication number
- JPH02160374A JPH02160374A JP63314631A JP31463188A JPH02160374A JP H02160374 A JPH02160374 A JP H02160374A JP 63314631 A JP63314631 A JP 63314631A JP 31463188 A JP31463188 A JP 31463188A JP H02160374 A JPH02160374 A JP H02160374A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- lead
- elect
- lead foil
- neg
- 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
- 239000002253 acid Substances 0.000 title claims description 9
- 239000011888 foil Substances 0.000 claims abstract description 50
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 15
- 229910052763 palladium Inorganic materials 0.000 claims description 14
- -1 palladium ions Chemical class 0.000 claims description 14
- 239000003792 electrolyte Substances 0.000 claims description 13
- 239000008151 electrolyte solution Substances 0.000 abstract description 6
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 abstract description 6
- 230000007423 decrease Effects 0.000 abstract description 4
- 230000006866 deterioration Effects 0.000 abstract description 4
- 239000003054 catalyst Substances 0.000 abstract description 3
- 150000002500 ions Chemical class 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- MUJIDPITZJWBSW-UHFFFAOYSA-N palladium(2+) Chemical compound [Pd+2] MUJIDPITZJWBSW-UHFFFAOYSA-N 0.000 description 3
- NXJCBFBQEVOTOW-UHFFFAOYSA-L palladium(2+);dihydroxide Chemical compound O[Pd]O NXJCBFBQEVOTOW-UHFFFAOYSA-L 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910052924 anglesite Inorganic materials 0.000 description 1
- 239000006182 cathode active material Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/34—Gastight accumulators
- H01M10/342—Gastight lead 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ｔとしてポータプル機器用に使用される密閉
式鉛蓄電池に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a sealed lead-acid battery used for portable equipment.
従来より、この種の密閉式鉛蓄電池は数多くの提案がな
されているが、極板群を可及的に薄（する構造としてイ
ｒ効なものとして、陽極板、陰極板および両極板間に介
装されるセパレータをそれぞれ一枚ずつ備え、これら陽
極板、陰極板およびセパレータからなる極板群が浸漬さ
れる電解液のｊ；１を遊離のない状態で調整することに
より、充電末期に陽極板から発生する酸素ガスが陰極板
に吸収されるようにして、電解液の減少を抑制するよう
にしたものがある。In the past, many proposals have been made for this type of sealed lead-acid battery. By preparing the electrolytic solution in which the anode plate, cathode plate, and separator are immersed so that no electrolyte is released, the anode is removed at the end of charging. There are some devices in which the oxygen gas generated from the plate is absorbed by the cathode plate to suppress the electrolyte from decreasing.
このような密閉式鉛蓄電池の充電方式としては、充電末
期において陽極板から発生する酸素ガスを吸収する能力
に限界があるため、充電末期に電流を減少させる定電圧
方式のものが−・船釣である。Since there is a limit to the ability to absorb oxygen gas generated from the anode plate at the end of charging, the charging method for sealed lead-acid batteries is a constant voltage method that reduces the current at the end of charging. It is.
しかしながら、このような充電方式によっても、従来構
成の電池の場合、充電末期における充電受入れ性が悪く
、陰極板中に硫酸鉛（ＰｂＳＯ４）が残存する傾向にあ
る。（以上、余白）すなわち、充電末期の反応は、
Ｐｂ＋ ０２ ＋Ｈ２ＳＯ４→Ｐ ｂ Ｓ ０４
＋ Ｈ２０・・・・・・Ｉ（酸素吸収反応）
Ｐ ｂ Ｓ ０４ ＋ Ｈ２０→Ｐ ｂ ＋ Ｈ２Ｓ
０４・・・・・・■（充電反応）
で表され、１式において生成された硫酸鉛は■式の充電
反応において１００％の効率で充電が進まなければ、陰
極板中に硫酸鉛が次第に蓄積され、電池８電は低ｔして
いく。ところが、通常、陽極板および陰極板の極板面積
は限られたものであるため、充電における電流密度は大
きくなり、■式の充電反応効率が悪化し、その結果電池
容量の低下が顕著になるという問題点があった。However, even with such a charging method, in the case of a conventionally configured battery, charge acceptance at the end of charging is poor, and lead sulfate (PbSO4) tends to remain in the cathode plate. (The above is blank) In other words, the reaction at the end of charging is Pb+ 02 +H2SO4→P b S 04
+ H20...I (oxygen absorption reaction) P b S 04 + H20 → P b + H2S
04...■ (charging reaction) If the lead sulfate produced in equation 1 does not proceed with 100% efficiency in the charging reaction of equation (■), lead sulfate will gradually form in the cathode plate. As it accumulates, the battery's 8-volt capacity decreases. However, since the plate areas of the anode plate and the cathode plate are usually limited, the current density during charging increases, which deteriorates the charging reaction efficiency of equation (2), resulting in a noticeable decrease in battery capacity. There was a problem.
このような問題点を解決するために、本発明者等は先に
、陽極板と陰極板およびセパレータを一枚ずつ備えた密
閉式電池系において、陽極板の背面側にセパレータを介
して鉛箔または鉛板を設置して、この鉛箔または鉛板の
端部をこれと反対側にもＩ置する前記陰極板に接続する
ことにより、同・充電条件であっても、１式で生成され
る硫酸鉛の量を減少させると共に、過充電時における電
池の容ｉ１低ドの抑制を図ったものを提案した。In order to solve these problems, the present inventors first developed a sealed battery system with one anode plate, one cathode plate, and one separator, and installed lead foil on the back side of the anode plate through the separator. Alternatively, by installing a lead plate and connecting the end of this lead foil or lead plate to the cathode plate placed on the opposite side, even under the same charging conditions, one set can be generated. We have proposed a battery that reduces the amount of lead sulfate used in the battery, and also suppresses the decrease in battery capacity i1 during overcharging.
この場合、鉛箔または鉛板を極板群として活用するため
、鉛箔または鉛板のｅＫ量分だけ電池市場が干たくなる
。したがって、電池ｉｌｌの増加分を抑えるためには、
鉛箔または鉛板の厚さを薄くするか、あるいは面積を小
さくする必要がある。In this case, since lead foil or lead plate is used as the electrode plate group, the battery market will dry up by the amount of eK of lead foil or lead plate. Therefore, in order to suppress the increase in battery ill,
It is necessary to reduce the thickness or area of the lead foil or plate.
しかしながら、鉛箔または鉛板を薄く形成することは加
］二技術」−１限界があり、また、鉛箔または鉛板の面
積を小さくすると所期の目的を達成し得なくなるという
問題点が生じた。However, there are limits to forming lead foil or lead plate thinly, and there is also the problem that reducing the area of lead foil or lead plate makes it impossible to achieve the intended purpose. Ta.
本発明は、このような問題点を解決することを［１的と
してなされたものである。The present invention has been made to solve these problems.
１−記Ｌ１的を達成するために本発明は、陽極板と陰極
板および両極板間に介装したセパレータからなる極板群
の片側または両側にセパレータを介して鉛箔または鉛板
を配設し、この鉛箔または鉛板の端部を前記陰極板に接
続すると共に、電解液中にパラジウムイオンを添加して
なることを特徴とするものである。1- In order to achieve objective L1, the present invention provides a method in which a lead foil or a lead plate is disposed on one or both sides of an electrode plate group consisting of an anode plate, a cathode plate, and a separator interposed between both electrode plates with a separator interposed therebetween. However, the end of the lead foil or lead plate is connected to the cathode plate, and palladium ions are added to the electrolyte.
また、前記パラジウムイオンの電解液中における添加歓
は０．００５〜０．０５モル／ｌの範囲が好適であり、
史に、陽極板の背面側に沿って設置される鉛箔または鉛
板の面積が陽極板および陰極板の面積と同一・、または
それ以上に設定してお（ことが好ましい。Further, the addition amount of the palladium ion in the electrolyte is preferably in the range of 0.005 to 0.05 mol/l,
Historically, the area of the lead foil or lead plate installed along the back side of the anode plate is set to be equal to or larger than the area of the anode plate and the cathode plate (preferably).
更にまた、前記陽極板をこれと交互に配設される陰極板
と同数または１枚多（設け、これら陽極板と喰極板間に
セパレータを介装してなる極板群において、この極板群
の両側または片側に鉛箔または鉛板を配設したものにも
適用できるものである。Furthermore, in an electrode plate group formed by providing the same number of anode plates or one more cathode plates arranged alternately with the cathode plates, and a separator is interposed between the anode plates and the cathode plates, this electrode plate It can also be applied to those in which lead foil or lead plates are provided on both sides or one side of the group.
上記構成を有する本発明の密閉式鉛蓄電池は、低率の電
流による充電時には、陰極板に流れる電流は小さくなる
。すなわち、過充電領域で充電された場合、従来構成で
は電流が全て陰極板に流れるのであるが、本発明ではそ
の電流が鉛箔または鉛板に分散して流れることになり、
陰極板に流れる電流は相対的に減少する。これによって
、陰極板に蓄積される硫酸鉛晴が減少し、過充電特性が
向−１−する。また、この場合、電解液中に添加したパ
ラジウムイオンの触媒作用により、鉛箔または鉛板の面
積を小さく設定しても、鉛箔に大電流が流れ、陰極板の
劣化は極力抑制されるものである。In the sealed lead-acid battery of the present invention having the above configuration, when charging with a low rate current, the current flowing through the cathode plate becomes small. That is, when charging occurs in the overcharge region, in the conventional configuration, all the current flows to the cathode plate, but in the present invention, the current flows in a distributed manner to the lead foil or lead plate.
The current flowing through the cathode plate is relatively reduced. As a result, lead sulfate deposits accumulated on the cathode plate are reduced, and overcharge characteristics are improved. In addition, in this case, due to the catalytic action of palladium ions added to the electrolyte, even if the area of the lead foil or lead plate is set small, a large current flows through the lead foil, and deterioration of the cathode plate is suppressed as much as possible. It is.
以上、本発明の実施例を図面に基づき詳細に説明する。 The embodiments of the present invention will now be described in detail based on the drawings.
第１図において、この実施例の密閉式鉛蓄電池は、方形
状の陽極板（＋）と陰極板（２）間にＵ字状に屈曲させ
たセパレータ（３）を介装すると共に、このセパレータ
（３）の址長部分（３ａ）を陽極＆（＋）の他面側に沿
わせ、このセパレータ延１分（３ａ）を介して鉛箔また
は鉛板（図では鉛箔）（４）を陽極板（１）に沿って設
置して、この鉛箔（４）の端部を陰極板（２）に接触さ
せて接続することにより極板群（５）を構成しである。In FIG. 1, the sealed lead-acid battery of this embodiment has a U-shaped separator (3) interposed between a rectangular anode plate (+) and a cathode plate (2). (3) along the other side of the anode & (+), and insert lead foil or a lead plate (lead foil in the figure) (4) through this separator extension (3a). An electrode plate group (5) is constructed by installing the lead foil (4) along the anode plate (1) and connecting the end of the lead foil (4) to the cathode plate (2) by contacting it.
このようにすることで、陽極板（＋）はＵ字状セハレー
タ（３）により包み込まれ、このセパレータ（３）を介
して陽極＆（））の−・側には陰極板（２）、他側には
鉛箔（４）が対向状に設置されることになり、また、極
板群（５）の構成時において、陽極板（１） 、陰極板
（２）および鉛箔（４）の中心点が同一線−Ｌに並ぶよ
うにしである。史に、前記鉛箔（４）の陰極板（２）と
の接続部（２ａ）はセパレータ（３）の底面部に沿って
陰極板（２）側へ回り込むように本体部分から延長して
あり、その端部を陰極板（２）に接触させるようにしで
ある。By doing this, the anode plate (+) is surrounded by the U-shaped separator (3), and the cathode plate (2) and other Lead foils (4) will be installed on the sides facing each other, and when forming the electrode plate group (5), the anode plate (1), cathode plate (2) and lead foil (4) will be The center points are arranged on the same line -L. Historically, the connecting portion (2a) of the lead foil (4) with the cathode plate (2) extends from the main body so as to wrap around the bottom of the separator (3) toward the cathode plate (2). , with its end in contact with the cathode plate (2).
ト記各構成部分の横幅および縦寸法は、陽極板（１）お
よび陰極板（２）がそれぞれ５０ｍ＋ｉＸ５０ｍｍ−鉛
箔（４）の本体部分が３５ｗ Ｘ ３５ｍｍ ％同じく
鉛箔（４）の接続部（２ａ）が５＋１ｍＸ２０＋ｍであ
り、また、鉛箔（４）の厚さは１００μｍとしである。The horizontal and vertical dimensions of each component are as follows: Anode plate (1) and cathode plate (2) are each 50m + iX50mm - the main body of lead foil (4) is 35w x 35mm % Similarly, the connection part of lead foil (4) ( 2a) is 5+1 m×20+m, and the thickness of the lead foil (4) is 100 μm.
史に、鉛箔（４）は錫を２．５重量％含有する鉛−錫系
合金により形成されている。Historically, the lead foil (4) is made of a lead-tin alloy containing 2.5% by weight of tin.
前記極板群（５）が浸漬される電解液中には水酸化パラ
ジウムを添加しである。Palladium hydroxide is added to the electrolytic solution in which the electrode plate group (5) is immersed.
そして、このような構成を有する２Ｖ１１０時間率容＠
０．８Ａｈの電池を作成すると共に、電解液として比
重）、３４のぷ硫酸を使用し、電解液陽は遊離のない状
態に調整した。And 2V110 hour rate capacity with such configuration @
A 0.8 Ah battery was prepared, and psulfuric acid with a specific gravity of 34 was used as the electrolyte, and the electrolyte was adjusted to a state where no release occurred.
また、本発明と比較するために従来構成による２Ｖ、１
０時間率容１０．８Ａｈの電池を作成した。この従来構
成のものは、陽極板、陰極板およびセパレータの厚さは
この実施例におけるＵ字状セパレータの２倍に設定した
。史に、電解液は比重１．３４の希硫酸を使用し、その
液［１℃は鉛箔を活用した従来例（Ａ）と鉛箔のない従
来例（Ｂ）共、同量に設定した。In addition, for comparison with the present invention, 2V and 1V with the conventional configuration
A battery with a zero hour rate capacity of 10.8 Ah was prepared. In this conventional configuration, the thicknesses of the anode plate, cathode plate, and separator were set to be twice that of the U-shaped separator in this embodiment. Historically, dilute sulfuric acid with a specific gravity of 1.34 was used as the electrolytic solution, and the temperature of the solution [1°C] was set to the same amount for both the conventional example using lead foil (A) and the conventional example without lead foil (B). .
史に、電解液中における水酸化パラジウムは添加してい
ないもの（従来例（Ａ）（Ｂ））から、０．０１〜０、
ｉモル／ｌまで添加したものを飴備した。Historically, palladium hydroxide in the electrolyte was 0.01 to 0, starting from those not added (conventional examples (A) and (B)).
Candy was prepared by adding up to 1 mol/l.
これら試料となる電池の評価方法としては、完全充電状
態の電池を４０Ａの定電流で過充電し、２週間に鉦って
容１ｆｉｔ試験を行った後、同・条件ドで過充電を繰り
返す方法を採用した。なお、２週間を１サイクルとした
合端試験においては、 ０．６ＯＡの定電流放電を行い
、電池電圧が１．７５Ｖまでに達する時間を電池容量と
した。The evaluation method for these sample batteries is to overcharge a fully charged battery at a constant current of 40A, conduct a capacity 1 fit test every two weeks, and then repeat overcharging under the same conditions. It was adopted. In the joint test where one cycle was two weeks, a constant current discharge of 0.6 OA was performed, and the time required for the battery voltage to reach 1.75 V was defined as the battery capacity.
第２図に１−２過充電サイクルにおける電池容量の変化
を示す。この図に示すように、鉛箔を活用した従来例（
Ａ）が鉛箔のない従来例（Ｂ）よりも過充電特性が勝っ
ていることが明瞭であるが、それ以上、に鉛箔を活用す
ると共に、水酸化パラジウムを添加電を異ならせて電解
液中に添加した２種類の本発明実施例（Ｃ）（Ｄ）の方
が更に過充電特性に勝ることが判明した。FIG. 2 shows the change in battery capacity during 1-2 overcharge cycles. As shown in this figure, a conventional example using lead foil (
It is clear that A) has better overcharging characteristics than the conventional example (B) without lead foil, but beyond that, lead foil is used and palladium hydroxide is electrolyzed with different added charges. It was found that the two types of Examples (C) and (D) of the present invention added to the liquid had better overcharge characteristics.
このように本発明構成により過充電特性が大幅に改冴さ
れる点については、過充電時において、本来、陰極板（
２）に流れる電流が一部、鉛箔（４）に流れるが、電解
液中にパラジウムイオンが存在していると、充電時にお
いて鉛箔イオンが鉛箔表面に析出され、パラジウム自体
が陽極板（１）から発生した酸素ガスを吸収する触媒と
して働く。したがって、パラジウムイオンの触媒効果に
よって鉛箔（４）に大電流が流れ、陰極板（２）の劣化
は極力抑制されるものである。As described above, the overcharging characteristics are greatly improved by the configuration of the present invention.
Part of the current flowing in 2) flows through the lead foil (4), but if palladium ions are present in the electrolyte, the lead foil ions will be deposited on the lead foil surface during charging, and the palladium itself will be attached to the anode plate. It acts as a catalyst to absorb the oxygen gas generated from (1). Therefore, a large current flows through the lead foil (4) due to the catalytic effect of palladium ions, and deterioration of the cathode plate (2) is suppressed as much as possible.
なお、充電中において、パラジウムイオンが陰極板（２
）中にも析出していくが、陰極板（２）は多孔体からな
るので、パラジウムイオンは陰極活物質中に取込まれて
しまい、鉛箔（４） １．はどには酸素吸収触媒とし
て機能しない。Note that during charging, palladium ions are exposed to the cathode plate (2
), but since the cathode plate (2) is made of a porous material, palladium ions are taken into the cathode active material, and the lead foil (4) 1. The throat does not function as an oxygen absorption catalyst.
第３図にパラジウムイオン添加ｌＩｔと電池の保存後の
容ｊｌ残存率の関係を示した。なお、保（ｆ条件は４０
°Ｃ，２Ｅ月である。この図から明らかなように、パラ
ジウムイオンを電解液中に０．０５モル／！以以上加す
ると、電池の自己放電反応が速くなるので実用的でない
。FIG. 3 shows the relationship between the palladium ion addition lIt and the remaining capacity jl of the battery after storage. Note that the f condition is 40
°C, 2E month. As is clear from this figure, palladium ions are contained in the electrolyte at 0.05 mol/! Adding more than this is not practical because the self-discharge reaction of the battery becomes faster.
最後に、寿命末期の電池を分解し、鉛箔（４）の表面状
態を調べた結果、鉛箔（４）の表面は若干、硫酸鉛化し
ていたが、厚さに変化は認められなかった。このように
電解液中にパラジウムイオンを添加し、鉛箔（４）の酸
素吸収能力を増大させても、鉛箔（４）の劣化に影響す
ることはない。Finally, we disassembled the battery at the end of its life and examined the surface condition of the lead foil (4). The surface of the lead foil (4) was slightly sulfated, but no change in thickness was observed. . Even if palladium ions are added to the electrolytic solution in this way to increase the oxygen absorption capacity of the lead foil (4), it will not affect the deterioration of the lead foil (4).
１−記のような作用・効果は陽極板（１）、陰極板（２
）がそれぞれ−・枚ずつの最小中位構成に限られるもの
ではなく、陽極板（１）が陰極板（２）と同数または１
枚多く設けた構成のものであっても、同様に奏し得るも
のであり、この場合、これら陽極板（１）と陰極板（２
）間にセパレータ（３）を介装シてなる極板群（５）に
おいて、極板群（５）の両側または片側に鉛箔または鉛
板（４）を配設すると共に、電解液中にパラジウムイオ
ンを添加することにより過充電特性を向上させることが
できる。The functions and effects described in 1-1 are as follows: anode plate (1), cathode plate (2)
) is not limited to the minimum medium configuration of -. each, but the anode plate (1) is the same number as the cathode plate (2) or 1
Even if the configuration has a large number of plates, the same performance can be achieved. In this case, the anode plate (1) and the cathode plate (2)
) In the electrode plate group (5) with a separator (3) interposed between them, lead foil or a lead plate (4) is arranged on both sides or one side of the electrode plate group (5), and Overcharge characteristics can be improved by adding palladium ions.
以上説明したように本発明の密閉式鉛蓄電池によるとき
は、陽極板と陰極板およびセパレータを有する極板群の
片側または両側にセパレータを介して鉛箔または鉛板を
配設したものにおいて、電解液中にパラジウムイオンを
添加してなるものとしたから、低率の電流での過充電特
性を向−１ニさせるものであり、また、この場合、電解
液中に添加したパラジウムイオンの触媒作用により、電
池容量を低下させることなく鉛箔または鉛板の面積を小
さく設定でき、電池重量を軽減できるなどの優れた効果
を発揮するものとなった。As explained above, when using the sealed lead-acid battery of the present invention, lead foil or a lead plate is arranged on one or both sides of the electrode plate group having an anode plate, a cathode plate, and a separator with a separator interposed therebetween. Since palladium ions are added to the electrolyte, the overcharging characteristics at low rate currents are improved. As a result, the area of the lead foil or lead plate can be set small without reducing the battery capacity, resulting in excellent effects such as reducing the weight of the battery.
第１図は本発明の実施例における極板群の構造を示す断
面図、第２図は低率の電流で過充電した場合の放電持続
時間の変化を示す特性線図、第３図は電解液中へのパラ
ジウムイオンの添加量と電池の保存後の残存率の関係を
示す特性線図である。
（１）・・・陽極板、（２）・・・陰極板、（３）・・
・セパレータ、（４）・・・鉛箔または鉛板、（５）・
・・極板群。
第７
図
第３図
第２図
ａ
パラジウムイオンの添加量（モル／Ｖ）過充電サイクル
数Figure 1 is a cross-sectional view showing the structure of the electrode plate group in the embodiment of the present invention, Figure 2 is a characteristic diagram showing the change in discharge duration when overcharged with a low rate of current, and Figure 3 is a FIG. 3 is a characteristic diagram showing the relationship between the amount of palladium ions added to the liquid and the residual rate of the battery after storage. (1)... Anode plate, (2)... Cathode plate, (3)...
・Separator, (4)...Lead foil or lead plate, (5)・
... Plate group. Figure 7 Figure 3 Figure 2 a Amount of palladium ion added (mol/V) Number of overcharge cycles
Claims (2)
ータからなる極板群の片側または両側にセパレータを介
して鉛箔または鉛板を配設し、この鉛箔または鉛板の端
部を前記陰極板に接続すると共に、電解液中にパラジウ
ムイオンを添加してなることを特徴とする密閉式鉛蓄電
池。(1) Lead foil or a lead plate is placed on one or both sides of a group of electrode plates consisting of an anode plate, a cathode plate, and a separator interposed between both plates, with a separator interposed therebetween, and the ends of the lead foil or lead plate are is connected to the cathode plate, and palladium ions are added to the electrolyte.
．００５〜０．０５モル／ｌの範囲に設定してある請求
項（１）記載の密閉式鉛蓄電池。(2) The amount of palladium ions added in the electrolyte is 0
．． The sealed lead-acid battery according to claim 1, wherein the content is set in the range of 0.005 to 0.05 mol/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63314631A JPH02160374A (en) | 1988-12-12 | 1988-12-12 | Sealed type lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63314631A JPH02160374A (en) | 1988-12-12 | 1988-12-12 | Sealed type lead-acid battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02160374A true JPH02160374A (en) | 1990-06-20 |
Family
ID=18055641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63314631A Pending JPH02160374A (en) | 1988-12-12 | 1988-12-12 | Sealed type lead-acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02160374A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100472928B1 (en) * | 2002-11-22 | 2005-03-10 | 학교법인 한양학원 | Electrolyte for Nickel-Metal Hydride Secondary Battery and Nickel-Metal Hydride Secondary Battery Having the Electrolyte |
-
1988
- 1988-12-12 JP JP63314631A patent/JPH02160374A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100472928B1 (en) * | 2002-11-22 | 2005-03-10 | 학교법인 한양학원 | Electrolyte for Nickel-Metal Hydride Secondary Battery and Nickel-Metal Hydride Secondary Battery Having the Electrolyte |
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