JPH0265068A - Flat type organic electrolyte battery - Google Patents
Flat type organic electrolyte batteryInfo
- Publication number
- JPH0265068A JPH0265068A JP21543188A JP21543188A JPH0265068A JP H0265068 A JPH0265068 A JP H0265068A JP 21543188 A JP21543188 A JP 21543188A JP 21543188 A JP21543188 A JP 21543188A JP H0265068 A JPH0265068 A JP H0265068A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- battery
- case
- battery case
- organic electrolyte
- 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 description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 6
- 239000011149 active material Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052719 titanium Inorganic materials 0.000 abstract description 8
- 239000010936 titanium Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001947 lithium oxide Inorganic materials 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage 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
- H01M4/06—Electrodes for primary cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/14—Cells with non-aqueous electrolyte
- H01M6/16—Cells with non-aqueous electrolyte with organic electrolyte
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Primary Cells (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、扁平形有機電解質電池の改良に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to improvements in flat organic electrolyte batteries.
従来の技術
有機電解質電池は、高エネルギー密度を有するところか
ら、コイン形のような厚さの薄いものが要求されるに至
っている。このような薄型の電池を構成するには、従来
のボタン形電池のように、電池ケース下方部分いっばい
に正極を充填すると、電池ケースと封目板との間を液密
に密封するための絶縁パッキングにも必要な厚さを要す
るため、電池の薄型化には限界があった。Conventional organic electrolyte batteries have high energy densities, and therefore are required to be coin-shaped and thin. In order to construct such a thin battery, it is necessary to fill the lower part of the battery case with the positive electrode all at once, as in conventional button batteries, to create a liquid-tight seal between the battery case and the sealing plate. Since the insulating packing also required a certain thickness, there was a limit to how thin the battery could be made.
そこで、絶縁パッキングを電池ケースの底面周縁部へ押
し込み、電池ケースの底面をパッキングの座として利用
する構成が採られる。また、この電池は反応が進むと、
次第に正極が膨張し負極が減少してくる。そのため、正
極リングによって正極の膨張方向を上下に抑制し、接触
圧を維持している。この場合、正極はケースとは直接接
触せず、正極リングを介して接触しているので、正極と
その端子を兼ねるケ了スとの電気的接触を充分に確保し
なければならない。Therefore, a configuration is adopted in which the insulating packing is pushed into the periphery of the bottom surface of the battery case and the bottom surface of the battery case is used as a seat for the packing. Also, as the reaction progresses in this battery,
The positive electrode gradually expands and the negative electrode gradually decreases. Therefore, the direction of expansion of the positive electrode is suppressed vertically by the positive electrode ring, thereby maintaining the contact pressure. In this case, since the positive electrode does not come into direct contact with the case but through the positive electrode ring, sufficient electrical contact between the positive electrode and the case that also serves as its terminal must be ensured.
従来、正極とケースとを電気的に接触させる方法として
は第３図に示すように導電性にすぐれたチタン材の薄板
８を７字型に折ったものをケース１に溶接し、そのばね
効果全利用して、一定の接触圧を得るものがあった。Conventionally, as shown in Figure 3, the method of electrically contacting the positive electrode and the case is to fold a thin plate 8 of highly conductive titanium material into a figure 7 shape, weld it to the case 1, and use the spring effect. There was one in which a constant contact pressure was obtained by using the entire amount.
発明が解決しようとする課題
上記従来の方法は、正極とケースとの電気的接触を確保
できるが、接触部分の面積が小さいだめ、接触抵抗は必
ずしも小さくならない。また、製造工程が非常に煩雑と
なり、さらに、前記チタン材薄板の材料費も必要となり
、結果的にコストが高くなる。Problems to be Solved by the Invention Although the conventional method described above can ensure electrical contact between the positive electrode and the case, the contact resistance does not necessarily become small because the area of the contact portion is small. Moreover, the manufacturing process becomes very complicated, and the material cost for the titanium thin plate is also required, resulting in an increase in cost.
本発明は、上記のような従来の問題点を解消し、正極と
ケースとの接触抵抗が小さく、また、製造の容易な扁平
形電池を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and provide a flat battery that has low contact resistance between the positive electrode and the case and is easy to manufacture.
課題を解決するだめの手段
この問題を解決するだめの本発明は、成型正極に凸部を
設け、かつこの凸部は正極リングの内方への折曲げ部の
厚み以上とすることにより、正極と電池ケースとを直接
接触させ、その接触面積を、前記チタン材薄板との接触
面積よりも広く設定したものである。Means for Solving the Problem The present invention, which solves this problem, provides a molded positive electrode with a convex portion, and this convex portion is thicker than the inwardly bent portion of the positive electrode ring. The battery case is brought into direct contact with the battery case, and the contact area is set to be larger than the contact area with the titanium thin plate.
作 用
この構成によれば、正極とケースとの接触面積が広くな
り、接触抵抗が低くなることで電池の内部抵抗を低く抑
えることとなる。また、前記チタン材薄板を溶接する工
程がなくなり、製造コスト削減となる。Function: According to this configuration, the contact area between the positive electrode and the case becomes large, and the contact resistance becomes low, thereby suppressing the internal resistance of the battery. Furthermore, the step of welding the thin titanium plates is eliminated, resulting in a reduction in manufacturing costs.
実施例 以下、本発明の実施例を示す。Example Examples of the present invention will be shown below.
第１図は、リチウム／二酸化マンガンの扁平形有機電解
質電池を示す。図において１は耐有機電解質性ステンレ
ス鋼板の電池ケースであり、２は同材料の封口板、３は
リチウムシートからなる負極活物質、４は正極リングで
ある。なお、Ｔ池ケス１の内面はそのままでもよいが、
さらに導電性炭素被膜を形成するか、あるいは酸化ルテ
ニウム被膜を形成させれば保存性が一層向上する。５は
凸部５ａを設けた正極で、活物質である二酸化マンガン
とカーボンブラックとフッ素樹脂結１を混合したものを
、第２図に示す如く成型したものである。第２図中５ａ
は凸部で成型正極６の片面に設けられている。６はポリ
プロピレン不織布製セパレータ、電解液は炭酸プロピレ
ンと１，２−ジメトキシエタンとの混合溶媒に過塩素酸
リチウムを溶解したものを用いた。FIG. 1 shows a lithium/manganese dioxide flat organic electrolyte cell. In the figure, 1 is a battery case made of organic electrolyte-resistant stainless steel plate, 2 is a sealing plate made of the same material, 3 is a negative electrode active material made of a lithium sheet, and 4 is a positive electrode ring. In addition, the inner surface of T-ike case 1 may be left as is,
Further, if a conductive carbon film or a ruthenium oxide film is formed, the storage stability will be further improved. 5 is a positive electrode provided with a convex portion 5a, which is made by molding a mixture of manganese dioxide as an active material, carbon black, and fluororesin binder 1 as shown in FIG. 5a in Figure 2
is a convex portion provided on one side of the molded positive electrode 6. Reference numeral 6 used a polypropylene nonwoven fabric separator, and the electrolytic solution used was one in which lithium perchlorate was dissolved in a mixed solvent of propylene carbonate and 1,2-dimethoxyethane.
封目板に固定した負極に電解液を含浸させ、封口板の絶
縁パッキング７の内面を覆うようにセパレータを押し出
し、さらにその上から正極、正極リングを挿入し、電池
ケースとカップリングさせ、かしめ封口をして電池を構
成した。The negative electrode fixed to the sealing plate is impregnated with electrolyte, the separator is pushed out so as to cover the inner surface of the insulating packing 7 of the sealing plate, and the positive electrode and positive electrode ring are inserted from above, coupled to the battery case, and caulked. The battery was constructed by sealing it.
本発明の電池Ａと従来例Ｂ（各６ｏ個）の静特性を表１
に、放電特性（２０℃ ７．５にΩ ２．５゜Ｖカット
）を第４図に示す。Table 1 shows the static characteristics of battery A of the present invention and conventional example B (60 batteries each).
Figure 4 shows the discharge characteristics (20°C, 7.5Ω, 2.5°V cut).
表１ 静特性
発明の効果
（１） この構成を用いたことにより、正極とケスと
の接触面積を広く取れ、かつ確実な接触が得られ、内部
抵抗の低下が図れる。Table 1 Static Characteristics Effects of the Invention (1) By using this configuration, the contact area between the positive electrode and the case can be widened, reliable contact can be obtained, and internal resistance can be reduced.
（２）正極の凸部６ａの増量分の材料費は、前記チタン
材薄板に比べ、非常に安価でありコスト削減となった。(2) The material cost for the increased amount of the positive electrode convex portion 6a is much lower than that of the titanium thin plate, resulting in cost reduction.
（３）ｆ−タン材薄板をケースへ溶接する工程を削除で
きた。(3) The process of welding the f-tan thin plate to the case could be eliminated.
（４）正極の凸部の増量は、即ち電池構成要素の増量で
あり、電池容量の増加となった。(4) An increase in the amount of the convex portion of the positive electrode means an increase in the amount of battery components, resulting in an increase in battery capacity.
第１図は本発明の実施例における扁平形電池の断面図、
第２図Ａは凸部を設けた成型正極の平面図、同Ｂはその
側面図、第３図は従来の扁平形電池の断面図、第４図は
放電特性の比較を示す図である。
１・・・・・・ケース、２・・・・・・封口板、３・・
・・・・負極、４・・・・・・正極リング、５．５′・
・・・・・正極、６・・・・・・セパレータ、７・・・
・・・絶縁パッキング、８・・・・・・チタン材薄板。FIG. 1 is a cross-sectional view of a flat battery in an embodiment of the present invention;
2A is a plan view of a molded positive electrode provided with a convex portion, FIG. 2B is a side view thereof, FIG. 3 is a sectional view of a conventional flat battery, and FIG. 4 is a diagram showing a comparison of discharge characteristics. 1... Case, 2... Sealing plate, 3...
...Negative electrode, 4...Positive electrode ring, 5.5'.
... Positive electrode, 6 ... Separator, 7 ...
...Insulation packing, 8...Titanium material thin plate.
Claims (1)
極リングに保持された成型正極と、有機電解質とを、正
極端子を兼ねる電池ケースと負極端子を兼ねる封口板お
よび電池ケースと封口板との間に介在し前記電池ケース
の底部を座として圧縮された絶縁パッキングにより密封
した電池であって、前記成型正極の電池ケース底面側に
凸部を設けた扁平形有機電解質電池。(1) A negative electrode made of a light metal as an active material, a molded positive electrode held in a positive electrode ring with a roughly L-shaped cross section, and an organic electrolyte are connected to a battery case that also serves as a positive terminal, a sealing plate that also serves as a negative terminal, a battery case, and a seal. A flat organic electrolyte battery, the battery being sealed with compressed insulating packing interposed between the molded positive electrode and the battery case using the bottom of the battery case as a seat, the flat organic electrolyte battery having a convex portion on the bottom side of the battery case of the molded positive electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21543188A JPH0265068A (en) | 1988-08-30 | 1988-08-30 | Flat type organic electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21543188A JPH0265068A (en) | 1988-08-30 | 1988-08-30 | Flat type organic electrolyte battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0265068A true JPH0265068A (en) | 1990-03-05 |
Family
ID=16672224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21543188A Pending JPH0265068A (en) | 1988-08-30 | 1988-08-30 | Flat type organic electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0265068A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005203170A (en) * | 2004-01-14 | 2005-07-28 | Matsushita Electric Ind Co Ltd | Nonaqueous electrolyte battery |
| JP2005347154A (en) * | 2004-06-04 | 2005-12-15 | Matsushita Electric Ind Co Ltd | Coin-shaped lithium primary battery |
-
1988
- 1988-08-30 JP JP21543188A patent/JPH0265068A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005203170A (en) * | 2004-01-14 | 2005-07-28 | Matsushita Electric Ind Co Ltd | Nonaqueous electrolyte battery |
| JP4595328B2 (en) * | 2004-01-14 | 2010-12-08 | パナソニック株式会社 | Non-aqueous electrolyte battery |
| JP2005347154A (en) * | 2004-06-04 | 2005-12-15 | Matsushita Electric Ind Co Ltd | Coin-shaped lithium primary battery |
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