JP2553598B2 - Sealed lead acid battery - Google Patents
Sealed lead acid batteryInfo
- Publication number
- JP2553598B2 JP2553598B2 JP62305005A JP30500587A JP2553598B2 JP 2553598 B2 JP2553598 B2 JP 2553598B2 JP 62305005 A JP62305005 A JP 62305005A JP 30500587 A JP30500587 A JP 30500587A JP 2553598 B2 JP2553598 B2 JP 2553598B2
- Authority
- JP
- Japan
- Prior art keywords
- sealed lead
- acid battery
- positive electrode
- active material
- lattice
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/68—Selection of materials for use in lead-acid accumulators
- H01M4/685—Lead alloys
-
- 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
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/56—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of lead
-
- 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)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明はポータブル機器用として多方面に利用され、
急激に需要が増加している密閉型鉛蓄電池に関するもの
である。TECHNICAL FIELD OF THE INVENTION The present invention is used in various fields for portable devices,
The present invention relates to a sealed lead-acid battery whose demand is rapidly increasing.
従来の技術 密閉型鉛電池に関してはこれまでに数多くの提案があ
る。代表的なものとして、電解液量を極板群の孔容積、
もしくはそれ以下にしてフリー液無しの状態とし、充電
末期に正極板から発生する酸素ガスを負極板に吸収させ
ることにより、電解液の減少を抑制する方式が採用され
ている。この密閉型鉛蓄電池は横転や倒置しても漏液せ
ず、かつ補水不要であるという特徴を持っている。2. Description of the Related Art There have been many proposals to date regarding sealed lead batteries. As a typical example, the amount of electrolytic solution is defined as the pore volume of the electrode plate group,
Alternatively, a method of suppressing the decrease of the electrolytic solution is adopted by making the state below the free solution and making the negative electrode plate absorb oxygen gas generated from the positive electrode plate at the end of charging. This sealed lead-acid battery has the characteristics that it does not leak even if it is tumbled or placed upside down, and that it does not require water replenishment.
発明が解決しようとする問題点 上記従来の密閉型鉛蓄電池は、くり返し微少定電流過
充電を行った場合、容量劣化が起こり、サイクル寿命が
低下するという問題点を有していた。Problems to be Solved by the Invention The above-described conventional sealed lead-acid battery has a problem in that capacity is deteriorated and cycle life is shortened when repeatedly overcharged with a minute constant current.
この問題点の原因として、微少定電流過充電による格
子の伸び、および格子と活物質の界面に不働態層が形成
されることによる格子と活物質との界面の密着性の低下
が考えられる。It is considered that the cause of this problem is the elongation of the lattice due to the minute constant current overcharge, and the decrease in the adhesion between the lattice and the active material due to the formation of the passivation layer at the interface between the lattice and the active material.
本発明は上記問題点を解決するもので、格子の伸びを
抑制し、格子と活物質との界面の密着性を向上させるこ
とにより、不働態層の形成を防ぎ、サイクル寿命を向上
させるものである。The present invention solves the above problems, and suppresses the elongation of the lattice and improves the adhesiveness at the interface between the lattice and the active material, thereby preventing the formation of the passivation layer and improving the cycle life. is there.
問題点を解決するための手段 前記の目的を達成するために、本発明の密閉型鉛蓄電
池はスズ粉末を正極活物質中に重量比で0.01〜0.2％添
加した構成を有する。Means for Solving the Problems In order to achieve the above object, the sealed lead-acid battery of the present invention has a structure in which tin powder is added to the positive electrode active material in an amount of 0.01 to 0.2% by weight.
さらに、正極格子としてPb−Sn−As合金を用いる構成
としたものである。Further, a Pb-Sn-As alloy is used as the positive electrode grid.
作 用 この構成によって、密閉型鉛蓄電池の格子の伸び、お
よび格子と活物質との界面でおこる不働態層の形成を抑
制し、格子界面での密着性を向上させることにより微少
定電流過充電による容量劣化を抑制し、サイクル寿命の
向上を実現することができる。Operation With this configuration, the expansion of the lattice of the sealed lead-acid battery and the formation of the passivation layer that occurs at the interface between the lattice and the active material are suppressed, and the adhesion at the lattice interface is improved, so that a minute constant current overcharge is achieved. It is possible to suppress the capacity deterioration due to and improve the cycle life.
実施例 以下本発明の実施例について図を参照しながら説明す
る。Examples Examples of the present invention will be described below with reference to the drawings.
正極板としてPb−Sn−As合金よりなる格子に、鉛粉重
量当たり0.005〜0.3％のスズ粉末を練合時に添加したペ
ーストを充填し、極板を試作した。As a positive electrode plate, a grid made of a Pb-Sn-As alloy was filled with a paste to which 0.005 to 0.3% of tin powder based on the weight of lead powder was added at the time of kneading, and an electrode plate was manufactured as a trial.
これらの正極板１枚および従来処方の負極板１枚、ガ
ラスマット１枚を組み合わせ、電解液として比重1.34
（20℃）の希硫酸を用いて、電圧8V、容量1.1Ah（10時
間率）の電池を試作した。なお本発明の正極Ａはスズを
0.01％添加したもの、Ｂは同じく0.1％、Ｃは同じく0.2
％添加したものである。One positive electrode plate, one conventional negative electrode plate, and one glass mat are combined to give an electrolyte solution with a specific gravity of 1.34.
A battery with a voltage of 8 V and a capacity of 1.1 Ah (10 hour rate) was prototyped using dilute sulfuric acid (20 ° C). The positive electrode A of the present invention is made of tin.
0.01% added, B 0.1%, C 0.2%
% Added.
第１図にこれらの電池Ａ〜Ｃと、従来電池のサイクル
寿命特性を示す。FIG. 1 shows the cycle life characteristics of these batteries A to C and a conventional battery.
なお、放電は12Ωの定抵抗を用いて放電電圧6.8Vまで
とし、充電は電流値440mAの定電圧充電を６時間おこな
った。The discharge was performed using a constant resistance of 12Ω up to a discharge voltage of 6.8 V, and the charging was performed by constant voltage charging with a current value of 440 mA for 6 hours.
第２図のように、スズ粉末の添加量が0.01％未満の場
合は効率がなく、0.2％以上になると内部短絡が起こり
寿命特性が劣化する。As shown in FIG. 2, when the amount of tin powder added is less than 0.01%, the efficiency is low, and when it exceeds 0.2%, an internal short circuit occurs and the life characteristics deteriorate.
また、Snを含まない格子合金を用いた場合は効果がな
く、Asは格子合金の機械的強度を向上させるため添加し
た。Further, when a lattice alloy containing no Sn was used, there was no effect, and As was added to improve the mechanical strength of the lattice alloy.
以上のように本実施例によれば、Pb−Sn−As合金より
なる格子に鉛粉重量当たり0.01〜0.2％のスズ粉末を添
加したペーストを充填したことにより、密閉型鉛蓄電池
におけるサイクル寿命を大幅に向上させることができ
る。As described above, according to the present embodiment, by filling the paste made of Pb-Sn-As alloy with 0.01 to 0.2% tin powder based on the weight of the lead powder, the cycle life of the sealed lead storage battery is improved. It can be greatly improved.
発明の効果 本発明は、密閉型鉛蓄電池の正極活物質中にスズ粉末
を添加するとともに、正極格子としてPb−Sn−As合金を
用いることにより、微少定電流過充電による格子の伸
び、および格子と活物質との界面でおこる不働態層の形
成を抑制し、格子界面での密着性を向上させて容量劣化
を抑制するものである。Effects of the Invention The present invention, by adding tin powder in the positive electrode active material of the sealed lead-acid battery, by using a Pb-Sn-As alloy as the positive electrode grid, the elongation of the grid by the micro constant current overcharge, and the grid It suppresses the formation of a passive layer at the interface between the active material and the active material, improves the adhesion at the lattice interface, and suppresses the capacity deterioration.
このような効果をもたらす原因は明らかではないが、
正極格子中のスズと正極活物質中のスズの相互作用によ
り、格子と活物質との界面の密着性が向上したと推定さ
れる。このことにより、密閉型鉛蓄電池のサイクル寿命
の向上とともに高信頼性の密閉型鉛蓄電池の提供が可能
となる。The reason for this effect is not clear,
It is presumed that the interaction between tin in the positive electrode grid and tin in the positive electrode active material improved the adhesion at the interface between the grid and the active material. This makes it possible to improve the cycle life of the sealed lead acid battery and provide a highly reliable sealed lead acid battery.
第１図は本発明による試作電池と従来電池のサイクル寿
命を示す図、第２図はスズ粉末の添加量とサイクル寿命
の関係を示す図である。 本発明品Ａ……スズ粉末の添加量0.01Wt％、本発明品Ｂ
……スズ粉末の添加量0.1Wt％、本発明品Ｃ……スズ粉
末の添加量0.2Wt％。FIG. 1 is a diagram showing the cycle life of a prototype battery according to the present invention and a conventional battery, and FIG. 2 is a diagram showing the relationship between the amount of tin powder added and the cycle life. Inventive product A: Addition amount of tin powder 0.01 Wt%, inventive product B
--- Addition amount of tin powder 0.1 Wt%, product C of the present invention --- Addition amount of tin powder 0.2 Wt%.
Claims (1)
物質中に添加するとともに、正極格子としてPb−Sn−As
合金を用いることを特徴とする密閉形鉛蓄電池。1. A tin powder is added to a positive electrode active material in an amount of 0.01 to 0.2% by weight, and Pb-Sn-As is used as a positive electrode grid.
A sealed lead-acid battery characterized by using an alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62305005A JP2553598B2 (en) | 1987-12-01 | 1987-12-01 | Sealed lead acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62305005A JP2553598B2 (en) | 1987-12-01 | 1987-12-01 | Sealed lead acid battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01146254A JPH01146254A (en) | 1989-06-08 |
| JP2553598B2 true JP2553598B2 (en) | 1996-11-13 |
Family
ID=17939935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62305005A Expired - Lifetime JP2553598B2 (en) | 1987-12-01 | 1987-12-01 | Sealed lead acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2553598B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53118742A (en) * | 1977-03-25 | 1978-10-17 | Japan Storage Battery Co Ltd | Maintenance free type lead storage battery |
| JPS5487827A (en) * | 1977-12-23 | 1979-07-12 | Matsushita Electric Ind Co Ltd | Grid for lead storage battery |
-
1987
- 1987-12-01 JP JP62305005A patent/JP2553598B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53118742A (en) * | 1977-03-25 | 1978-10-17 | Japan Storage Battery Co Ltd | Maintenance free type lead storage battery |
| JPS5487827A (en) * | 1977-12-23 | 1979-07-12 | Matsushita Electric Ind Co Ltd | Grid for lead storage battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01146254A (en) | 1989-06-08 |
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