JPS58189957A - Small sealed battery - Google Patents
Small sealed batteryInfo
- Publication number
- JPS58189957A JPS58189957A JP57072819A JP7281982A JPS58189957A JP S58189957 A JPS58189957 A JP S58189957A JP 57072819 A JP57072819 A JP 57072819A JP 7281982 A JP7281982 A JP 7281982A JP S58189957 A JPS58189957 A JP S58189957A
- Authority
- JP
- Japan
- Prior art keywords
- separator
- electrolyte
- battery
- cellophane
- cellophane film
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
-
- 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
Abstract
Description
【発明の詳細な説明】 パレータに関する。[Detailed description of the invention] Regarding Paleta.
従来の電池では負極側に入れられた電解液がエーゾング
により、セパレータ、正極合剤に多量に移動し、負極側
に残る電解液が減少するため、放１ｈ；効率が低下する
という欠点があった。In conventional batteries, a large amount of the electrolyte placed in the negative electrode moves to the separator and positive electrode mixture due to aging, reducing the amount of electrolyte remaining on the negative electrode, resulting in a decrease in efficiency within 1 hour. .
この原因は主として、電解液による膨潤性が強いために
セバレー タが大きく変形することにあり、そのためセ
バレー．７を構成する複数模の間と空間が生じて、その
空間に電解液が取り込まれたり、膨潤により吸液体積が
増加することにより、電解液が取り込まれたりする。The main reason for this is that the sebarator is greatly deformed due to its strong swelling properties due to the electrolyte. A space is created between the plurality of patterns constituting 7, and the electrolyte is taken into the space, or the electrolyte is taken in by increasing the liquid absorption volume due to swelling.
本発明は上記欠点をなくし、負極からの電解液移動量を
へらし、全体の放電効率向上を目的とする。そのために
セパレータに薄肉部を設は変形と膨潤を防ぐ事を要旨と
する。The present invention aims to eliminate the above drawbacks, reduce the amount of electrolyte transferred from the negative electrode, and improve the overall discharge efficiency. To this end, the purpose of providing a thin wall portion in the separator is to prevent deformation and swelling.
以下図面と共に本発明の一実施例を説明する。゛第１図
は本発明の一実施例の断面図で、１は正極缶、２は正極
合剤で例えば過酸化銀を主たる活物質としており、６は
負極缶、４は負極合剤で例えば亜鉛を主たる活物質とし
ている。５は電解液、６はカスケノトである。An embodiment of the present invention will be described below with reference to the drawings.゛Figure 1 is a cross-sectional view of one embodiment of the present invention, where 1 is a positive electrode can, 2 is a positive electrode mixture whose main active material is, for example, silver peroxide, 6 is a negative electrode can, and 4 is a negative electrode mixture, for example. Zinc is the main active material. 5 is an electrolyte, and 6 is a casket.
７、８、９はセパレータで３層構造をなしていて、７及
び９はポリエチレン膜、８はセロハｙｌｌｌで々〕る。Separators 7, 8, and 9 have a three-layer structure; 7 and 9 are polyethylene films, and 8 is cellophane film.
いずれも２５ミクロン程度の厚みを有している。１０は
セロハン膜の薄肉部である。Each has a thickness of about 25 microns. 10 is a thin portion of the cellophane membrane.
該薄肉部１０はヒート成形（加熱成形）で如上し、薄肉
部の厚さは１０ミクロンで環状に３重に設けている。The thin wall portion 10 is formed by heat molding, and has a thickness of 10 microns and is arranged in three layers in an annular shape.
セパレータを構成する膜のうち、セロハン膜８は電解液
５の吸液性が特に強く、横方向に伸びる欠点があるため
、薄肉部１０を設けて部分的に膜の厚さを変えることに
よって、その部分の剛性を小さくして、変形を防止する
ことができる。その結果セロハン膜８とその両側にある
２枚のポリエチレン膜７及び９どの間にセロハンのアバ
レによる空間が生じる事がなくなり、セパレータの電解
液の吸液量が少なくなる。Among the membranes constituting the separator, the cellophane membrane 8 has a particularly strong ability to absorb the electrolyte 5 and has the disadvantage of stretching in the lateral direction. Deformation can be prevented by reducing the rigidity of that part. As a result, no space is created between the cellophane membrane 8 and the two polyethylene membranes 7 and 9 on both sides thereof due to a gap in the cellophane, and the amount of electrolyte absorbed by the separator is reduced.
次に従来のセパレータ構造と本実施例によるセパレータ
構造での電池内電解液量の分布の測定値を第−表に示す
。Next, Table 1 shows the measured values of the distribution of the amount of electrolyte in the battery in the conventional separator structure and the separator structure according to this embodiment.
電池はＴＲ９２０サイズで、６０℃で２０日間保存後の
試料数１０個の平均値である。The battery is TR920 size, and the average value is obtained from 10 samples after storage at 60°C for 20 days.
なお初期投入の電解液量は２７μ！ である。The initial amount of electrolyte added is 27μ! It is.
第−表
第一衣から明らかな如く、本実施例によるセ・（レータ
構造は、セパレータでの吸液が小さく、負極での電解液
の確保に効果が大きい。As is clear from Table 1, the separator structure according to the present example has a small liquid absorption in the separator and is highly effective in securing the electrolyte at the negative electrode.
次に、上記電池を６０°Ｃで２０日間保存後の放電特性
を示す。Next, the discharge characteristics of the above battery after being stored at 60°C for 20 days will be shown.
設定電気容量値は５０ ｍ Ａ、 Ｈで、従来のセ・ぐ
レータ構造の電池は４０ｍＡＨで８０％の放電効率、本
実施例電池の場合は４４．５ｍＡＨで８９％の放電効率
であった。The set electric capacity value was 50 mA, H, and the conventional battery with a separator structure had a discharge efficiency of 80% at 40 mAH, and the battery of this example had a discharge efficiency of 89% at 44.5 mAH.
以−に述べた如く本発明によれば、電池の放電効率の向
上か計れ、電池の長寿命化に効果カー大きい。As described above, according to the present invention, the discharging efficiency of the battery can be improved and the life span of the battery can be greatly extended.
第１図は本発明の一実施例の断面図である。 ７・・・・・ポリエチレン膜、 ８・・・・・・・・セロハン膜、 ９・・・・・ポリエチレン膜、 １０・・・・ 薄肉部。 FIG. 1 is a sectional view of an embodiment of the present invention. 7...Polyethylene membrane, 8... Cellophane membrane, 9...Polyethylene membrane, 10... Thin wall part.
Claims (1)
とも一部に薄肉部を設けたことを特徴とする小型密閉電
池。 Ｑ） 特許請求の範囲第１項記載の密閉電池に於いて、
薄肉部を円周方向にセロハンに設けた事を特徴とする小
型密［ｋ’ｌ ５ｆｉ池。[Scope of Claims] 0) A small sealed battery L', characterized in that at least a portion of the separator is provided with a thin wall portion. Q) In the sealed battery described in claim 1,
A small compact model with a thin wall made of cellophane in the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57072819A JPS58189957A (en) | 1982-04-30 | 1982-04-30 | Small sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57072819A JPS58189957A (en) | 1982-04-30 | 1982-04-30 | Small sealed battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58189957A true JPS58189957A (en) | 1983-11-05 |
Family
ID=13500399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57072819A Pending JPS58189957A (en) | 1982-04-30 | 1982-04-30 | Small sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58189957A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4804598A (en) * | 1987-12-14 | 1989-02-14 | Westinghouse Electric Corp. | Separator systems for silver-iron batteries |
-
1982
- 1982-04-30 JP JP57072819A patent/JPS58189957A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4804598A (en) * | 1987-12-14 | 1989-02-14 | Westinghouse Electric Corp. | Separator systems for silver-iron batteries |
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