JPH01309251A - Flat type organic electrolyte battery - Google Patents
Flat type organic electrolyte batteryInfo
- Publication number
- JPH01309251A JPH01309251A JP63138818A JP13881888A JPH01309251A JP H01309251 A JPH01309251 A JP H01309251A JP 63138818 A JP63138818 A JP 63138818A JP 13881888 A JP13881888 A JP 13881888A JP H01309251 A JPH01309251 A JP H01309251A
- Authority
- JP
- Japan
- Prior art keywords
- battery case
- positive electrode
- battery
- organic electrolyte
- contact
- 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 10
- 239000011149 active material Substances 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract 2
- 238000007789 sealing Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 2
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-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
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium 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
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000003068 static effect Effects 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
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/14—Cells with non-aqueous electrolyte
- H01M6/16—Cells with non-aqueous electrolyte with organic electrolyte
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、有機電解質電池、特に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 organic electrolyte batteries, particularly 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、電池ケース下部分にいっ
ばいに成型正極を充填すると、電池ケースと封口板との
間を液密に密封するだめの絶縁パッキングにもある程度
厚さを要するため、電池の薄形化にも限界がある。その
ため、絶縁バンキングを電池ケースの底部周縁部へ押し
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。Conventional organic electrolyte batteries have a high energy density, so it is difficult to construct thin coin-shaped batteries.
If the lower part of the battery case is filled with molded positive electrodes all at once, as in conventional button batteries, the insulating packing that provides a liquid-tight seal between the battery case and the sealing plate also requires a certain thickness. There are limits to how thin batteries can be made. Therefore, a configuration is adopted in which the insulating banking is pushed into the bottom peripheral portion of the battery case and the bottom surface of the battery case is used as a seat for the packing.
ここで、第３図は従来例の扁平形電池の断面図である。Here, FIG. 3 is a sectional view of a conventional flat battery.
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はリチウムンートからなる負
極活物質、４は正極集電体である。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 lithium salt, and 4 is a positive electrode current collector.
なお、電池ケース１の内面はそのままでもよいが、さら
に導電性炭素皮膜または酸化ルテニウム皮膜を形成させ
れば保存特性が一段と向上する。Note that the inner surface of the battery case 1 may be left as is, but if a conductive carbon film or a ruthenium oxide film is further formed, the storage characteristics will be further improved.
６は成型正極で活物質である二酸化マンガンとカーボン
ブランクとフン素樹脂結着剤の混合物を成型したもので
ある。６はポリプロピレン不織布製セパレータである。6 is a molded positive electrode made of a mixture of manganese dioxide as an active material, a carbon blank, and a fluorine resin binder. 6 is a separator made of polypropylene nonwoven fabric.
重質液は炭酸プロピレンと１゜２−ジメトキンエタンと
の混合溶媒に過塩素酸リチウムを溶解したものを用いる
。The heavy liquid used is one in which lithium perchlorate is dissolved in a mixed solvent of propylene carbonate and 1°2-dimethquinethane.
まだ、この電池は反応を始めると、しだいに成型正極が
膨張し、負極が減少してくる。そのため、成型正極の膨
張方向を正極集電体によって上下方向へ規制し、電池内
部の接触を確保している。この場合、成型正極は、電池
ケースとは直接に接触はせず、正極集電体を介して続触
しているので、成型正極とその端子を兼ねる電池ケース
との電気的接触が充分に確保されていなければならない
。However, when this battery begins to react, the molded positive electrode gradually expands and the negative electrode decreases. Therefore, the expansion direction of the molded positive electrode is regulated in the vertical direction by the positive electrode current collector to ensure contact inside the battery. In this case, the molded positive electrode is not in direct contact with the battery case, but is in continuous contact via the positive electrode current collector, ensuring sufficient electrical contact between the molded positive electrode and the battery case, which also serves as its terminal. must have been done.
発明が解決しようとする課題
このような従来の構成では、成型正極と正極集電体との
接触、正極集電体と電池ケースの接触というように接触
面が何面もあり、接触抵抗が高くなるという問題があっ
た。Problems to be Solved by the Invention In such a conventional configuration, there are many contact surfaces such as contact between the molded positive electrode and the positive electrode current collector, and contact between the positive electrode current collector and the battery case, resulting in high contact resistance. There was a problem.
本発明は、このような問題点を解決するもので、成型正
極と電池ケースとの接触が良好で内部抵抗の低い扁平形
電池を提供することを目的とする。The present invention solves these problems, and aims to provide a flat battery that has good contact between a molded positive electrode and a battery case and has low internal resistance.
課題を解決するだめの手段
この問題点を解決するための本発明は、電池ケース底部
に内方へ突出する突面部を形成し、その突面部の高さを
正極集電体の板厚よりも大きくすることにより、成型正
極と電池ケースを直接に接触可能としたものである。Means for Solving the Problem In order to solve this problem, the present invention forms a protrusion that protrudes inward at the bottom of the battery case, and makes the height of the protrusion greater than the thickness of the positive electrode current collector. By increasing the size, it is possible to directly contact the molded positive electrode and the battery case.
作 用
このｔ１η成によれば、成型正極と電池ケースとの接触
が直接的に行なわれるため、接触抵抗が低くなり、電池
自体の内部抵抗が低くおさえられることになる。Operation According to this t1η formation, the molded positive electrode and the battery case are brought into direct contact, so that the contact resistance is reduced and the internal resistance of the battery itself is kept low.
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、本発明のリチウム、二酸化マンガン系の扁平
形電池の断面図である。１は本発明による底部に径１４
Ｈ１高さ０．３の突面部８を有する耐有機電解質性ステ
ンレス鋼板の電池ケースで、電池ケース１の内面はその
ままでもよいが、さらに導電性炭素皮膜または酸化ルテ
ニウム皮膜を形成させれば保存特性が一段と向上する。FIG. 1 is a sectional view of a lithium-manganese dioxide flat battery of the present invention. 1 has a diameter 14 at the bottom according to the invention
A battery case made of an organic electrolyte-resistant stainless steel plate having a protrusion 8 with a height of H1 of 0.3.The inner surface of the battery case 1 may be left as is, but if a conductive carbon film or ruthenium oxide film is further formed, the storage characteristics will be improved. will improve further.
２は同材料の封口板、３はリチウムシートによる負極活
物質、４は板厚０．１の正極集電体である。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 current collector with a plate thickness of 0.1.
６は成型正極、６はポリプロピレン不織布製セパレータ
であり、これらの構成は従来例と同じである。6 is a molded positive electrode, 6 is a polypropylene nonwoven fabric separator, and these structures are the same as in the conventional example.
次に、本実施例による電池をＡ、従来例による電池をＢ
として、それぞれの静特性を次表に示す。Next, the battery according to this embodiment is A, and the battery according to the conventional example is B.
The static characteristics of each are shown in the table below.
また、Ａ、Ｂの電池を製造直後、２０℃、７．６にΩの
抵抗を負荷として放電させたときの放電特性を第４図に
示す。Further, FIG. 4 shows the discharge characteristics when batteries A and B were discharged at 20° C. with a resistance of 7.6 Ω as a load immediately after manufacture.
発明の効果
以上の結果から明らかなように、本発明によれば電池ケ
ースと成型正極との間の接触が十分に図れて、内部抵抗
が小さく、放電性能、保存性能が良好な扁平形有機電解
質電池が得られる。Effects of the Invention As is clear from the above results, the present invention provides a flat organic electrolyte that has sufficient contact between the battery case and the molded positive electrode, has low internal resistance, and has good discharge performance and storage performance. A battery is obtained.
第１図は本発明の実施例における扁平形電池の縦断面図
、第２図はその電池ケースの縦断面図、第３図は従来の
扁平形電池の縦断面図、第４図は放電特性の比較を示す
図である。
１・・・・・・電池ケース、２・・・・・・封口板、３
・・・・・・負極、４・・・・・・正極集電体、５・・
・・・・正極、６・・・・・・セパレータ、了・・・・
・・パッキング、８・・・・・・突面部。
代即人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
４ ◇−
第４図
底置時間ｃｈ）Fig. 1 is a longitudinal cross-sectional view of a flat battery according to an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view of its battery case, Fig. 3 is a longitudinal cross-sectional view of a conventional flat battery, and Fig. 4 is a discharge characteristic. FIG. 1...Battery case, 2...Sealing plate, 3
...Negative electrode, 4...Positive electrode current collector, 5...
...Positive electrode, 6...Separator, End...
...Packing, 8...Protrusion. Name of representative Patent attorney Toshio Nakao and 1 other person 1st
Figure 4 ◇- Figure 4 bottoming time ch)
Claims (1)
電体に保持された成型正極と、有機電解液とを、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電池ケースの底面を
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、前記電池ケース底部に、内側へ突出する突面
部を形成し、この突面部の高さを前記正極集電体の板厚
よりも大きくした扁平形有機電解質電池。A negative electrode made of a light metal as an active material, a molded positive electrode held in a positive electrode current collector 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. The battery is interposed between the battery case and the battery case and is sealed with a compressed insulating packing using the bottom surface of the battery case as a seat, and the battery case has a protruding surface portion that protrudes inwardly formed at the bottom of the battery case, and the height of the protrusion surface portion is A flat organic electrolyte battery having a thickness greater than that of the positive electrode current collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63138818A JPH01309251A (en) | 1988-06-06 | 1988-06-06 | Flat type organic electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63138818A JPH01309251A (en) | 1988-06-06 | 1988-06-06 | Flat type organic electrolyte battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01309251A true JPH01309251A (en) | 1989-12-13 |
Family
ID=15230948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63138818A Pending JPH01309251A (en) | 1988-06-06 | 1988-06-06 | Flat type organic electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01309251A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002029913A1 (en) * | 2000-10-05 | 2002-04-11 | Matsushita Electric Industrial Co., Ltd. | Flat battery and production method therefor |
-
1988
- 1988-06-06 JP JP63138818A patent/JPH01309251A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002029913A1 (en) * | 2000-10-05 | 2002-04-11 | Matsushita Electric Industrial Co., Ltd. | Flat battery and production method therefor |
| US7108941B2 (en) | 2000-10-05 | 2006-09-19 | Matsushita Electric Industrial Co., Ltd. | Flat battery and production method therefor |
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