JPS6161363A - Lithium battery - Google Patents
Lithium batteryInfo
- Publication number
- JPS6161363A JPS6161363A JP59184025A JP18402584A JPS6161363A JP S6161363 A JPS6161363 A JP S6161363A JP 59184025 A JP59184025 A JP 59184025A JP 18402584 A JP18402584 A JP 18402584A JP S6161363 A JPS6161363 A JP S6161363A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- film
- lithium
- sealed
- moisture
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- 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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明はリチウム電池の改良に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to improvements in lithium batteries.
従来の技術
負極にリチウム金が、電解液として有機電解質を用いる
リチウム電池は、エネルギー密度が高いこと、保存特性
が優れていること、さらには水銀等の公害物質を含まな
いこと等、種々の優れた特徴を持ち、近年多くの分野で
使用されており、今後もさらに新しい用途が増大すると
考えられる。Conventional technology Lithium batteries, which use lithium gold as the negative electrode and organic electrolyte as the electrolyte, have various advantages such as high energy density, excellent storage characteristics, and not containing pollutants such as mercury. It has been used in many fields in recent years, and it is thought that new applications will continue to increase in the future.
例えば、補聴器やポケットペルあるいは心臓医療用等、
従来の長期間の使用用途に比べ、数週間から１〜２ケ月
間程度の短期間に使い切る用途えの展開も要望されてい
る。For example, hearing aids, pocket pels, cardiac medical devices, etc.
Compared to conventional long-term usage applications, there is also a demand for applications that can be used up within a short period of time, from several weeks to one to two months.
これらの短期間に電池を使用してしまう用途の場合は、
消費電流も数ミリアンペアから数十ミリアンペアと、非
常に大きな電流がとり出せること、が必要とされている
。For applications where batteries are used for a short period of time,
The current consumption ranges from a few milliamps to several tens of milliamps, and it is necessary to be able to draw a very large current.
これらの要望にこたえるため、電池の反応面積を大きく
するため、正極、負極をうす巻き状に構成した円筒形や
、電池の横断面が小判形や長方形をした、いわゆる異形
リチウム電池の開発が盛んになった。In order to meet these demands, in order to increase the reaction area of the battery, there is active development of so-called irregularly shaped lithium batteries, in which the positive and negative electrodes are cylindrical in a thinly wound configuration, and the cross section of the battery is oval or rectangular. Became.
発明が解決しようとする問題点 。The problem that the invention aims to solve.
しかしながら、これらの円筒形リチウム電池あるいは異
形リチウム電池は、その封口方法が難かしく、例えばハ
ーメチックシール等の特殊な封口方法が必要であり、電
池を生産する上からは作業性が悪く、高価なものになり
、実用性にとぼしいものであった。However, these cylindrical lithium batteries or irregularly shaped lithium batteries are difficult to seal, requiring special sealing methods such as hermetic sealing, which makes them difficult to work with and expensive. Therefore, it was of little practical use.
本発明はこのようなリチウム電池において、通常のカシ
メ封口方式では完全密封が難かしいとされていた、円筒
形あるいは異形リチウム電池であっても、これら電池の
密封度を補うため、電池をその未使用期間中防湿性フィ
ルムで密封包装することにより、保存信頼性の優れた電
池を安価に提供するものである。The present invention is aimed at supplementing the degree of sealing of cylindrical or irregularly shaped lithium batteries, for which it is difficult to completely seal the battery using the normal crimp sealing method. By sealing the battery with a moisture-proof film during use, it is possible to provide a battery with excellent storage reliability at a low cost.
問題点を解決するための手段
上記の目的を達成するため、円筒形あるいは異形リチウ
電池など通常の力ｙメ封口により密閉して得た電池を、
内側からポリエステル／アルミニウム箔／ポリエチレン
等の防湿性フィルムで密封包装したものである。Means for Solving the Problems In order to achieve the above-mentioned purpose, a battery, such as a cylindrical or irregularly shaped lithium battery, obtained by sealing it with a conventional force-sealing method,
It is hermetically sealed from the inside with a moisture-proof film such as polyester/aluminum foil/polyethylene.
作用
こうすることにより、製品の保存中における外気の湿度
を完全に遮閉し、保存信頼性の高いリチウム電池を提供
するものである。By doing so, it is possible to completely block the humidity of the outside air during storage of the product, thereby providing a lithium battery with high storage reliability.
実施例
図によυ本発明を説明すると第２図の１はステンレス鋼
板を打抜加工した皿状の電池ケース、２はその底部内面
に形成した炭素被膜、３はケースと同材料を打抜加工し
た封口板、４は負極活物質でおる金属リチウム、６は正
極活物質である７ノ化炭素と導電材であるアセチレンブ
ラック及び結着剤であるスチレンブタジェンゴムの水性
ディスバージジンとからなる正極合剤、６はポリプロピ
レンの不織布からなるセパレータ、７はガスヶ、ノドで
ある。ここでの電解液には炭酸プロピレンと１．２−ジ
メトキシエタンとの等容積混合溶媒に、ホラクツ化すチ
ウムを１モル／ｌの割合で溶解したものを用いた。The present invention will be explained with reference to the drawings. In Fig. 2, 1 is a dish-shaped battery case made by punching a stainless steel plate, 2 is a carbon coating formed on the inner surface of the bottom part, and 3 is a battery case made by punching the same material as the case. Processed sealing plate, 4 is metallic lithium as a negative electrode active material, 6 is a positive electrode active material made of carbon heptanoide, acetylene black as a conductive material, and aqueous disvergedine of styrene-butadiene rubber as a binder. 6 is a separator made of a nonwoven polypropylene fabric, and 7 is a gas tube. The electrolytic solution used herein was a mixture of propylene carbonate and 1,2-dimethoxyethane in equal volumes, in which lithium holactide was dissolved at a ratio of 1 mol/l.
この電池の総高は２．５朋、長辺２４．ｏ朋、短辺１２
．０ＩＩＩｆｆの小判形をした異形リチウム電池である
。The total height of this battery is 2.5 mm, and the long side is 24 mm. o friend, short side 12
．． It is an odd-shaped lithium battery with an oval shape of 0IIIff.
第１図に第２図で得た電池９を防湿性フィルムで密封包
装したものを示す。防湿性フィルムよりなる袋で１０は
その内側から、ポリエステルフィルム１１、アルミニウ
ム箔１２、ポリエチレンフィルム１３よシなり、アルミ
ニウム箔１２により外気の湿気を完全に遮断するもので
ある。FIG. 1 shows the battery 9 obtained in FIG. 2 sealed and packaged with a moisture-proof film. The bag 10 is made of a moisture-proof film, and is made of a polyester film 11, an aluminum foil 12, and a polyethylene film 13 from the inside, and the aluminum foil 12 completely blocks moisture from the outside air.
尚、電池の使用時には、この防湿密封包装袋を破って、
電池９を取シ出し、使用するものである。When using the battery, tear the moisture-proof sealed packaging bag and
The battery 9 is taken out and used.
前述のごとく、補聴器、ポケットベルあるいは一部の医
療器機用の電源としては、電池の実際の使用期間は短か
く、電池の製造後から使用されるまでの期間が長いよう
な用途に本発明を用いることにより、外気の湿度に大き
く影響されるリチウム電池の封口構造を簡便な方式にし
ても、安心して貯蔵することができる。As mentioned above, the present invention can be used as a power source for hearing aids, pagers, or some medical devices, where the actual usage period of the battery is short and the period from when the battery is manufactured until it is used is long. By using this method, even if the sealing structure of a lithium battery, which is greatly affected by the humidity of the outside air, is simplified, it can be safely stored.
第１図で示した電池を用いて、その外周を防湿性フィル
ムの袋で密封包装したものを人とし、防湿性フィルムで
の密封包装を実施しない電池をＢとして、それぞれを室
温４６°Ｃ１相対湿度９３形の環境で、１００日間放置
した後、それぞれの電池の特性を評価した。値はいずれ
も２０個の平均値を示した。Using the battery shown in Figure 1, the person whose outer periphery is sealed with a moisture-proof film bag is designated as a person, and the battery that is not sealed with a moisture-proof film is designated as B. After being left for 100 days in an environment with a humidity level of 93, the characteristics of each battery were evaluated. All values are the average of 20 values.
電池 開路電圧 内部抵抗
人 ３．２ ５ ”ｌ／
２０ ΩＢ ２．８７Ｖ ６５０Ω
尚、防湿性フィルムには以下の構成のものを用いた。Battery open circuit voltage internal resistance 3.2 5 ”l/
20 ΩB 2.87V 650Ω The moisture-proof film used had the following configuration.
内 面 ポリエステル １２μｍ
中間層 アルミニウム箔 ９μｍ
外 面 ポリエチレン ２０μｍ
以上の通り本発明によれば、従来からカシメ方式では十
分な密封構造がとれず、電池の保存特性に問題があった
異形リチウム電池であっても、その周囲を防湿性フィル
ムで完全に密封されるため、保存中の特性劣化を防止す
ることが出来る。Inner layer: Polyester 12 μm Intermediate layer: Aluminum foil 9 μm Outer layer: Polyethylene 20 μm As described above, according to the present invention, it is possible to solve irregularly shaped lithium batteries that have conventionally been unable to achieve a sufficient sealing structure using the caulking method and have had problems with battery storage characteristics. Since the surrounding area is completely sealed with a moisture-proof film, deterioration of characteristics during storage can be prevented.
発明の効果
このように本発明によれば、金属リチウムを負極活物質
とする有機電解質電池の保存性能を改良することができ
る。Effects of the Invention As described above, according to the present invention, the storage performance of an organic electrolyte battery using metallic lithium as a negative electrode active material can be improved.
第１図は本発明におけるリチウム電池を示す概略断面図
、第２図は密封される異形リチウム電池の断面図である
。
９・・・・・・リチウム電池、１０・・・・・・防湿性
フィルム。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
第２図FIG. 1 is a schematic sectional view showing a lithium battery according to the present invention, and FIG. 2 is a sectional view of a sealed modified lithium battery. 9...Lithium battery, 10...Moisture-proof film. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2
Claims (2)
金属合金を用いて密閉した電池と、この電池の周囲を防
湿性フィルムで密封したことを特徴とするリチウム電池
。(1) A lithium battery comprising a hermetically sealed battery using lithium metal or lithium metal alloy as a negative electrode active material, and a moisture-proof film sealed around the battery.
リプロピレン、ポリエステル、等の合成樹脂フィルムま
たは紙、セロハン等の電気絶縁性フィルムからなり中間
層あるいは外面にアルミニウム箔を用いた多層フィルム
よりなる特許請求の範囲第１項記載のリチウム電池。(2) A patent claim that the moisture-proof film is a multilayer film whose inner surface is made of a synthetic resin film such as polyethylene, polypropylene, polyester, etc. or an electrically insulating film such as paper or cellophane, and whose intermediate layer or outer surface is made of aluminum foil. The lithium battery according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59184025A JPS6161363A (en) | 1984-09-03 | 1984-09-03 | Lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59184025A JPS6161363A (en) | 1984-09-03 | 1984-09-03 | Lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6161363A true JPS6161363A (en) | 1986-03-29 |
Family
ID=16146027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59184025A Pending JPS6161363A (en) | 1984-09-03 | 1984-09-03 | Lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6161363A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0296623A2 (en) * | 1987-06-25 | 1988-12-28 | Japan Storage Battery Company Limited | Sealed lead-acid battery |
| JPH04366547A (en) * | 1991-06-12 | 1992-12-18 | Matsushita Electric Ind Co Ltd | Gas depolarizing assembling battery |
-
1984
- 1984-09-03 JP JP59184025A patent/JPS6161363A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0296623A2 (en) * | 1987-06-25 | 1988-12-28 | Japan Storage Battery Company Limited | Sealed lead-acid battery |
| JPH04366547A (en) * | 1991-06-12 | 1992-12-18 | Matsushita Electric Ind Co Ltd | Gas depolarizing assembling battery |
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