JPH03245465A - Organic electrolyte cell - Google Patents
Organic electrolyte cellInfo
- Publication number
- JPH03245465A JPH03245465A JP2041780A JP4178090A JPH03245465A JP H03245465 A JPH03245465 A JP H03245465A JP 2041780 A JP2041780 A JP 2041780A JP 4178090 A JP4178090 A JP 4178090A JP H03245465 A JPH03245465 A JP H03245465A
- Authority
- JP
- Japan
- Prior art keywords
- electrode plate
- negative electrode
- organic electrolyte
- knurling
- knurled
- 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
- 239000005486 organic electrolyte Substances 0.000 title claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 230000001788 irregular Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- FBDMJGHBCPNRGF-UHFFFAOYSA-M [OH-].[Li+].[O-2].[Mn+2] Chemical compound [OH-].[Li+].[O-2].[Mn+2] FBDMJGHBCPNRGF-UHFFFAOYSA-M 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- HPGPEWYJWRWDTP-UHFFFAOYSA-N lithium peroxide Chemical compound [Li+].[Li+].[O-][O-] HPGPEWYJWRWDTP-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007788 roughening Methods 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Primary Cells (AREA)
- Secondary Cells (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、リチウム等の活性軽金属を負極活物質に用い
た有機電解質電池に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an organic electrolyte battery using an active light metal such as lithium as a negative electrode active material.
従来の技術
渦巻状の極板群を用いた有機電解質電池は、大電流を取
り出させることができる。しかしその−方で多くの場合
、短絡時の安全性確保のために、大きな短絡電流が流れ
るとセパレータの細孔を閉塞して電流を遮断させるため
に、厚さ２５μ程度のマイクロポーラスなフィルム状セ
パレータを用いている。この種のセパレータでリチウム
のような活性金属を、両面からはさみ込んで正極板と共
に巻回して極板群を構成する場合、次のような問題があ
った。BACKGROUND OF THE INVENTION Organic electrolyte batteries using spiral plates can draw large currents. However, in many cases, in order to ensure safety in the event of a short circuit, a microporous film with a thickness of about 25 μm is used to close the pores of the separator and cut off the current when a large short circuit current flows. A separator is used. When an active metal such as lithium is sandwiched between both sides of this type of separator and wound together with a positive electrode plate to form an electrode plate group, the following problems occur.
発明か解決しようとする課題
すなわち、リチウム金属、マグネシウム金属のような活
性金属はその表面状態が平滑であり、またマイクロポー
ラスなフィルム状セパレータは、その素材としてポリエ
チレン、ポリプロピレンのような合成樹脂をフィルム状
に延伸したものが用いられる。その表面状態は前記軽金
属よりもはるかに平滑で、セパレータと軽金属との密着
力は極めて弱く、互いに非常に滑り易いものであった。The problem to be solved by the invention is that active metals such as lithium metal and magnesium metal have smooth surfaces, and microporous film separators are made of synthetic resins such as polyethylene and polypropylene as their materials. It is used after being stretched into a shape. The surface condition of the separator was much smoother than that of the light metal, and the adhesion between the separator and the light metal was extremely weak, and the separator and the light metal were extremely slippery.
このような物性のものを正極板とともに渦巻状に巻回す
る場合、第２図に示すように負極板１がセパレータ３に
対して位置ずれを起こし、正極板２と負極板１が直接接
触するという不都合かあった。When a material with such physical properties is spirally wound together with a positive electrode plate, the negative electrode plate 1 is misaligned with respect to the separator 3, as shown in Figure 2, and the positive electrode plate 2 and negative electrode plate 1 come into direct contact. There was an inconvenience.
課題を解決するための手段
この問題を解決するために本発明は、負極板の表面にロ
ーレット加工等の方法で粗面化した部分を設けたもので
ある。さらに望ましくは、負極板表面積の３０％以上を
ローレット加工することにより、その加工する位置を指
定しなくても安定し、セパレータと重ね合わせることか
できる。かつ、ローレット加工部分を表面積の６０％以
下にすることにより反応面積の減少等を招くことなく電
池特性上にも影響を及ぼさないようにできるものである
。Means for Solving the Problem In order to solve this problem, the present invention provides a roughened portion on the surface of the negative electrode plate by a method such as knurling. More preferably, by knurling 30% or more of the surface area of the negative electrode plate, the knurling can be stabilized and overlapped with the separator without specifying the position to be knurled. In addition, by making the knurled portion 60% or less of the surface area, it is possible to prevent the reaction area from decreasing and the battery characteristics from being affected.
作用
このような構成により、正極板と負極板をセパレータを
介して巻回すると、セパレータから負極板かすへって、
はみ出したりすることがなくなる。また、負極板の粗面
化した部分の表面積を、極板全体の３０〜６０％にする
ことにより、安定して負極板の位置ずれを防止でき、さ
らに電池性能にも影響を与えない電池を提供できる。Effect With this configuration, when the positive electrode plate and the negative electrode plate are wound with the separator interposed in between, the negative electrode plate scrapes from the separator to the
No more sticking out. In addition, by making the surface area of the roughened part of the negative electrode plate 30 to 60% of the entire electrode plate, we can stably prevent the negative electrode plate from shifting, and furthermore, we can create a battery that does not affect battery performance. Can be provided.
実施例
以下、本発明の一実施例について第１図をもとに説明す
る。第１図は本発明の負極板１を用いた円筒型二酸化マ
ンガンリチウム電池である。負極板１はポリエチレン、
ポリプロピレン等の合成樹脂フィルムからなるマイクロ
ポーラスな２枚のセパレータ３の間に介在し、二酸化マ
ンガンを生活物質とする正極板２と重ね合わせて渦巻状
に巻回され、極板群Ａを構成している。なお負極板１に
は負極側の集電体１ａを配しており、集電体１ａは金属
ケース６の内底面に電気的に接続されている。正極板２
の上部には集電体２ａを配置し、組立封口板Ｂの内底面
に電気的に接続されている。EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIG. FIG. 1 shows a cylindrical lithium manganese dioxide battery using the negative electrode plate 1 of the present invention. Negative electrode plate 1 is made of polyethylene,
It is interposed between two microporous separators 3 made of synthetic resin films such as polypropylene, and is wound spirally with a positive electrode plate 2 made of manganese dioxide as a living material, forming an electrode plate group A. ing. Note that the negative electrode plate 1 is provided with a current collector 1a on the negative electrode side, and the current collector 1a is electrically connected to the inner bottom surface of the metal case 6. Positive electrode plate 2
A current collector 2a is disposed on the top of the assembly sealing plate B, and is electrically connected to the inner bottom surface of the assembly sealing plate B.
組立封口板Ｂは、刃突起を備えたキャップＢ−１と安全
弁Ｂ−２、この安全弁Ｂ−２を固定した皿状端子板Ｂ−
３、ならびに絶縁バッキングＢ−４から構成されている
。２ｂは前記正極活物質である二酸化マンガンを圧着固
定するための正極の芯材であり、４は上部絶縁板、５は
下部絶縁板である。The assembly sealing plate B includes a cap B-1 with a blade protrusion, a safety valve B-2, and a dish-shaped terminal plate B- to which the safety valve B-2 is fixed.
3, and an insulating backing B-4. 2b is a core material of the positive electrode for crimping and fixing the manganese dioxide which is the positive electrode active material, 4 is an upper insulating plate, and 5 is a lower insulating plate.
次に、金属リチウム等の軽金属からなる負極板１につい
て詳述する。負極板１の表面には負極板表面積の３０〜
６０％の適当部分にローレット加工で凹凸を設けている
。なおローレット加工を施す部分を極板表面積の３０〜
６０％にしたのは、後述するように３０％未満であれば
本発明の目的とする位置ずれ防止効果が十分得られない
からであり、逆に６０％よりも多ければ、粗面化に起因
して電池特性の悪化、特に電池の内部抵抗の上昇をきた
すからである。これはローレット加工部か６０％より多
くなるとセパレータと負極板との接触状態が悪くなるた
めと考えられる。Next, the negative electrode plate 1 made of a light metal such as metallic lithium will be described in detail. The surface of the negative electrode plate 1 has a surface area of 30 to 30% of the negative electrode plate surface area.
Appropriate portions of 60% are knurled to provide unevenness. Note that the part to be knurled is 30~30% of the electrode plate surface area.
The reason why it is set to 60% is because, as will be described later, if it is less than 30%, the effect of preventing misalignment, which is the objective of the present invention, cannot be sufficiently obtained.On the other hand, if it is more than 60%, it is caused by roughening. This is because the battery characteristics deteriorate, especially the internal resistance of the battery increases. This is considered to be because when the knurled portion exceeds 60%, the contact between the separator and the negative electrode plate deteriorates.
なお、ローレット加工部の断面形状は、その深さか、０
．３〜０．５価のものとした。Note that the cross-sectional shape of the knurled part is determined by its depth or 0.
．． It was made to have a valence of 3 to 0.5.
このようにして構成された有機電解質電池と、従来の構
成のものとで、円筒形リチウム二酸化マ状に巻回した時
）における短絡不良と、本発明のローレット加工部の面
積とを、対比させて調査した結果を表１に示す。また表
１において、加工面積が５０％以下のものについては、
ローレット加工を施す位置を、第３図に示すように負極
板表面の■中心に１箇所のもの、■左側片端に１箇所の
もの、■両端と中心の３箇所に分割して配したもののそ
れぞれについて示し、６０％以上のものは、全て中心に
１箇所ローレツト加工したものについて示している。た
だし第３図はローレット加工部１ｂ、ｌｂ“、１ｂ”が
いずれも極板表面積の１０％のものである。We compared short-circuit failures in organic electrolyte batteries constructed in this way and conventional batteries (when wound into a cylindrical lithium dioxide polymer) and the area of the knurling portion of the present invention. The results of the investigation are shown in Table 1. In addition, in Table 1, for those with a processing area of 50% or less,
As shown in Figure 3, the knurling process is performed on the surface of the negative electrode plate: ■ One place at the center, ■ One place at one end on the left side, and ■ Three places divided at both ends and the center. 60% or more are all knurled at one place in the center. However, in FIG. 3, the knurled portions 1b, lb", 1b" each account for 10% of the surface area of the electrode plate.
（以 下 余 白）
表
１
なお工業的には、負極板表面の中心に１箇所ローレツト
を施したものが加工容易であるか、ローレット加工する
位置を指定しなくても確実に本発明の効果を得るために
は３０％以上の負極板表面積をローレット加工すること
か望ましい。(Margins below) Table 1 Industrially, it is easier to process a negative electrode plate with one knurling in the center of the surface, or the effect of the present invention can be ensured without specifying the knurling position. In order to obtain this, it is desirable to knurl 30% or more of the surface area of the negative electrode plate.
表２は、本発明のローレット加工部の面積と電池の内部
抵抗との関係を調査した結果である。電池数としてはそ
れぞれ１００個の測定値である。Table 2 shows the results of investigating the relationship between the area of the knurled portion of the present invention and the internal resistance of the battery. The number of batteries is 100 for each measurement.
表
発明の効果
以上のように本発明は、負極と正極の両極板のスレによ
る短絡を防止することかでき、またローレット加工部分
の表面積を負極表面積の３０〜６０％の範囲に規制する
ことにより性能の安定した有機電解質電池が得られる。Effects of the Invention As described above, the present invention can prevent short circuits due to scratches between the negative and positive electrode plates, and also by regulating the surface area of the knurling part to a range of 30 to 60% of the negative electrode surface area. An organic electrolyte battery with stable performance can be obtained.
第１図はセパレータにより包被された本発明の負極板を
正極板と対向させ、渦巻状極板群を形成してケース内に
収納した電池の半裁断面図、第２図は従来のローレット
加工を施さない負極板をセパレータに包被したときの、
負極板のずれを示す図、第３図■、■１■は本発明のロ
ーレット加工を示す図である。
１．１’、１”、１°”、 １ ””−−−−−・負
極板、１ａ・・・・・・負極集電片、１ｂ、１ｂ“、１
ｂ”・・・・・・負極板のローレット加工部分、２・・
・・・・正極板、２ａ・・・・正極集電片、２ｂ・・・
・・・集電金属芯材、３．３・・・・・・マイクロポー
ラスなフィルム状セパレータ、４・・・・・・上部絶縁
板、５・・・・・・下部絶縁板、６・・・・・・ケース
。Fig. 1 is a half-cut cross-sectional view of a battery in which the negative electrode plate of the present invention covered with a separator is placed opposite to the positive electrode plate to form a spiral electrode plate group and housed in a case, and Fig. 2 is a half-cut cross-sectional view of a battery that is housed in a case. When an untreated negative electrode plate is covered with a separator,
The diagrams showing the displacement of the negative electrode plate, and Figures 3 (2) and (1), are diagrams showing the knurling process of the present invention. 1.1', 1", 1°", 1 ""-----Negative electrode plate, 1a...Negative electrode current collector piece, 1b, 1b", 1
b”...Knurled part of negative electrode plate, 2...
...Positive electrode plate, 2a...Positive electrode current collector piece, 2b...
... Current collector metal core material, 3.3 ... Microporous film separator, 4 ... Upper insulating plate, 5 ... Lower insulating plate, 6 ... ····Case.
Claims (2)
ィルム状合成樹脂からなるセパレータを介して正極板と
対向させて巻回した極板群を備える有機電解質電池であ
って、負極板の表面をローレット加工したことを特徴と
する有機電解質電池。(1) An organic electrolyte battery comprising an electrode plate group in which a negative electrode plate made of a light metal is wound so as to face a positive electrode plate through a separator made of a microporous film-like synthetic resin, and the surface of the negative electrode plate is knurled. An organic electrolyte battery characterized by being processed.
３０〜６０％である特許請求の範囲第１項記載の有機電
解質電池。(2) The organic electrolyte battery according to claim 1, wherein the area of the knurled portion of the negative electrode plate is 30 to 60% of the total area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2041780A JPH03245465A (en) | 1990-02-22 | 1990-02-22 | Organic electrolyte cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2041780A JPH03245465A (en) | 1990-02-22 | 1990-02-22 | Organic electrolyte cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03245465A true JPH03245465A (en) | 1991-11-01 |
Family
ID=12617882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2041780A Pending JPH03245465A (en) | 1990-02-22 | 1990-02-22 | Organic electrolyte cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03245465A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0730449U (en) * | 1993-11-10 | 1995-06-06 | 富士電気化学株式会社 | Spiral battery |
| JP2009266718A (en) * | 2008-04-28 | 2009-11-12 | Sony Corp | Negative electrode, and secondary battery |
-
1990
- 1990-02-22 JP JP2041780A patent/JPH03245465A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0730449U (en) * | 1993-11-10 | 1995-06-06 | 富士電気化学株式会社 | Spiral battery |
| JP2009266718A (en) * | 2008-04-28 | 2009-11-12 | Sony Corp | Negative electrode, and secondary battery |
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