JPS62154561A - Lithium battery - Google Patents
Lithium batteryInfo
- Publication number
- JPS62154561A JPS62154561A JP60296900A JP29690085A JPS62154561A JP S62154561 A JPS62154561 A JP S62154561A JP 60296900 A JP60296900 A JP 60296900A JP 29690085 A JP29690085 A JP 29690085A JP S62154561 A JPS62154561 A JP S62154561A
- Authority
- JP
- Japan
- Prior art keywords
- lithium
- positive electrode
- alloy
- positive
- lithium battery
- 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
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature
-
- 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
Abstract
Description
【発明の詳細な説明】
〔渚業上の利用分野〕
本発明は有機電解質電池、特に１．５ｖ級の有機電解質
を用いたリチウム電池の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of application in beach industry] The present invention relates to an improvement of an organic electrolyte battery, particularly a lithium battery using a 1.5V class organic electrolyte.
１．５ｖ級の有機電解質を用いたリチウム電池（以下率
ｌこリチウム電池と称する）は放電電圧が約１．５ｖで
あり、既存のアルカリ系の放電電圧１．５ｖの電池との
電圧互換性を有すること、およびリチウム電池特有の長
期信頼性に優れていることから小型扁平電池としての要
望が高くなって来ている。Lithium batteries using a 1.5V class organic electrolyte (hereinafter referred to as lithium batteries) have a discharge voltage of approximately 1.5V, and are voltage compatible with existing alkaline batteries with a discharge voltage of 1.5V. Due to the excellent long-term reliability characteristic of lithium batteries, there has been an increasing demand for small flat batteries.
この種のリチウム電池の正極体は、既存のボタン型アル
カリ電池の場合と同様ｌこ、正極缶内に正極合剤と正極
リングを順次挿入し、これらを加圧して一体化して形成
している。The positive electrode body of this type of lithium battery is formed by sequentially inserting a positive electrode mixture and a positive electrode ring into a positive electrode can, and pressurizing them to integrate them, as in the case of existing button-type alkaline batteries. .
かかる正極体を用いたリチウム電池は、電池密封形成後
Ｉこ一定電気量放電を行なう予備放電処理を行なうこと
により、電池の内部抵抗、開路電圧の安定化と耐保存特
性の向上をはかり、かかるリチウム電池の長期信頼性を
確保している。A lithium battery using such a positive electrode body is subjected to a pre-discharge treatment in which a certain amount of electricity is discharged after forming a battery seal, thereby stabilizing the internal resistance and open circuit voltage of the battery and improving storage resistance characteristics. Ensures long-term reliability of lithium batteries.
１．５ｖ級リチウム電池の場合、予備放電電気量により
保存後の静特性が変化することから、通常的ｌＯ％の予
備放電が行なわれている。放電条件は定電流で一定時間
放電する方法がとられているが、リチウム電池の場合、
より犬なる電流値で短時間に処理せんとすると電池が転
極し、有機電解質が分解してしまうためにこの方法を採
用することかできず、従って予備放電時間に数時間を要
するという不都合を有している。In the case of a 1.5 V class lithium battery, the static characteristics after storage change depending on the amount of electricity pre-discharged, so a pre-discharge of 10% is usually performed. The discharge condition is to discharge at a constant current for a certain period of time, but in the case of lithium batteries,
If the battery is not treated in a short time with a higher current value, the polarity of the battery will be reversed and the organic electrolyte will be decomposed, making it impossible to use this method.Therefore, the pre-discharge time takes several hours. have.
このように従来の正極体構成では、電池を密封形成した
後の予備放電処理に長時間を要すること、および電池の
容量を約１０％損失する問題があった。As described above, the conventional positive electrode structure has the problem that the preliminary discharge treatment after sealing the battery requires a long time and that the capacity of the battery is lost by about 10%.
従って本発明は従来のリチウム電池のかかる問題点を解
決することにあり、放電時間の短縮および予備放電量の
減少を計り、高容量の１．５Ｖ級リチウム電池を提供す
ることにある。Therefore, the present invention aims to solve these problems of conventional lithium batteries, and provides a high capacity 1.5V class lithium battery by shortening the discharge time and reducing the pre-discharge amount.
本発明はリチウムからなる負極と、正極合剤および有機
電解質を使用したリチウム電池において、上記正極合剤
と正極缶の間に金属リチウムまたはリチウム合金を介在
させた正極体を用いたリチウム電池にある。The present invention resides in a lithium battery using a negative electrode made of lithium, a positive electrode mixture and an organic electrolyte, and a positive electrode body in which metallic lithium or a lithium alloy is interposed between the positive electrode mixture and the positive electrode can. .
本発明のリチウム電池において使用する負極、正極体を
構成する正極合剤および正極缶、有機電解質は従来のリ
チウム電池に使用されているものを使用できる。The negative electrode used in the lithium battery of the present invention, the positive electrode mixture and positive electrode can constituting the positive electrode body, and the organic electrolyte used in conventional lithium batteries can be used.
本発明において、正極合剤と正極間の間に介在させるリ
チウムまたはリチウム合金は正極缶内底部全面に、ある
いは一部に箔もしくは板の形で載置させる。通常このた
めには、正極合材を正極缶内に嵌合させるため予備成形
し、この正極合材と本発明によるリチウムまたはリチウ
ム合金板もしくは箔を正極缶内に正大成形すればよい。In the present invention, the lithium or lithium alloy interposed between the positive electrode mixture and the positive electrode is placed in the form of a foil or plate on the entire bottom of the positive electrode can or in a part thereof. Usually, this can be accomplished by preforming the positive electrode composite material to fit inside the positive electrode can, and then forming the positive electrode composite material and the lithium or lithium alloy plate or foil according to the present invention into the positive electrode can.
使用しうるリチウム合金としては例えば３重量％の鉛を
含むリチウム−鉛合金、リチウム−カドミウム合金、リ
チウム−ビスマス合金、リチウム−スズ合金や、合金成
分として鉛、カドミウム、ビスマス、スズの２種以上を
含む３元合金以上の合金系が挙げられる。Examples of lithium alloys that can be used include lithium-lead alloys containing 3% by weight of lead, lithium-cadmium alloys, lithium-bismuth alloys, lithium-tin alloys, and two or more alloy components of lead, cadmium, bismuth, and tin. Examples include alloy systems containing ternary alloys or higher.
上述した構成を採用することにより、従来の構成におい
て必要としていた予備放電電気量および放電に要する時
間を、その半分以下にすることができ、電池容量の向上
を可能にする。By employing the above-described configuration, the amount of electricity required for preliminary discharge and the time required for discharge can be reduced to less than half of those required in the conventional configuration, making it possible to improve battery capacity.
以下図面を参照して本発明を説明する。 The present invention will be explained below with reference to the drawings.
第１図は本発明のリチウム電池における正極体製造の工
程を示す説明図であり、正極缶１を用意しく第１図■参
照）、この内底部に所定寸法に打ち抜いた松リチウム板
もしくは箔２をそのほぼ中央部に載置しく第１図■参照
）、その上に予め成形した正極合剤３を置き、この正極
合剤３の周囲に正極リング４を嵌合しく第１図■参照）
、これを金型ｌこより正極缶１内で加圧圧縮して正極体
を形成する（第１図■参照）。FIG. 1 is an explanatory diagram showing the process of manufacturing a positive electrode body in a lithium battery of the present invention. A positive electrode can 1 is prepared (see FIG. (see Figure 1 (■)), place the pre-formed positive electrode mixture 3 on top of it, and fit the positive electrode ring 4 around this positive electrode mixture 3 (see Figure 1 (■)).
This is compressed under pressure in a positive electrode can 1 through a mold l to form a positive electrode body (see FIG. 1).
第２図は本発明によるリチウム電池の一実施例の縦断面
図である。第２図において、ｌは厚さ０．２ ｍｍ、外
径９．５Ｈのニッケルメッキを施した鉄製の正極缶であ
り、この内底部に予め打抜いた厚さ０．０７ ｍｍ、直
径５Ｍのリチウム板２を置く。次に市販のＣｕＯ（平均
粒径１５ ａｍ ） ６０ ｉｉ重量部、Ｃｕ２Ｓおよ
びＦｅＳ２をモル比で１：２の割合で混合した混合物を
予め窒素ガス中で熱処理して得たＣｕＦｅ５１．、、４
Ｑ重量部、アセチレンブラック４重量部および人造黒
鉛２重量部、および弗素樹脂結着剤５重量部を混合し、
この混合物１３０ｒｎｑを直径８．５ ｍｚ 、厚さ０
．６５崩＃こ成形した正極合剤３と、その周囲に嵌合し
たＳＵＳ ３ Ｑ ４製正極リング４とともに正極缶１
内に挿入し、合剤３を上記リチウム板２の上に置き、加
圧再成形して正極体を形成する。次に上記正極合剤３お
よび正極リング４の上にポリプロピレン製で外径８．９
ｆｌ、厚さ５０μｍのシートを２枚セパレータ５として
置く。次にこのセパレータ５の上に厚さ０．２１Ｈｍの
ポリエチレン製の多孔度７０％の含液材６を置く、この
含液材６には、予め有機電解質として、炭酸プロピレン
および１゜２−ジメトキシエタンを１．５：１の体積割
合で混合したものに過塩素酸リチウムを０．５モル／ｌ
の割合となるように溶解して含浸させた。次に通常の如
（直径７．０ ｍｎ、厚さ０．７ ｒｒｔｍの負極すチ
ウム板７、およびポリプロピレン製ガスケット８を嵌合
し、更に厚さ０．２朋、外径８朋の５ＵＳ３０４梨封口
板９を置き、正極缶１の側壁を内方へかしめてリチウム
電池を形成する。このリチウム電池の最大外径は９．５
顧、最大総高は２０朋であった。上記構成のリチウム電
池をＡとする。FIG. 2 is a longitudinal cross-sectional view of an embodiment of a lithium battery according to the present invention. In Fig. 2, l is a nickel-plated positive electrode can with a thickness of 0.2 mm and an outer diameter of 9.5H, and a nickel-plated positive electrode can with a thickness of 0.07 mm and a diameter of 5M is punched out in the inner bottom of the can. Place lithium board 2. Next, a mixture of 60 ii parts by weight of commercially available CuO (average particle size 15 am), Cu2S and FeS2 in a molar ratio of 1:2 was heat treated in nitrogen gas to obtain CuFe51. ,,4
Mixing parts by weight of Q, 4 parts by weight of acetylene black, 2 parts by weight of artificial graphite, and 5 parts by weight of a fluororesin binder,
130rnq of this mixture with a diameter of 8.5 mz and a thickness of 0
．． A positive electrode can 1 is formed with a positive electrode mixture 3 molded into a 65 mm mold, and a positive electrode ring 4 made of SUS 3 Q4 fitted around it.
The mixture 3 is placed on the lithium plate 2 and re-molded under pressure to form a positive electrode body. Next, on top of the positive electrode mixture 3 and positive electrode ring 4, a polypropylene tube with an outer diameter of 8.9
fl, two sheets with a thickness of 50 μm are placed as the separator 5. Next, a liquid-containing material 6 made of polyethylene with a porosity of 70% and having a thickness of 0.21 Hm is placed on top of the separator 5. This liquid-containing material 6 is preliminarily filled with propylene carbonate and 1°2-dimethoxy as an organic electrolyte. Add 0.5 mol/l of lithium perchlorate to a mixture of ethane at a volume ratio of 1.5:1.
It was dissolved and impregnated so that the ratio was as follows. Next, fit the negative electrode lithium plate 7 with a diameter of 7.0 mm and a thickness of 0.7 rrtm and a polypropylene gasket 8 in the usual manner, and then fit the 5US304 pear plate with a thickness of 0.2 mm and an outer diameter of 8 mm. A sealing plate 9 is placed and the side wall of the positive electrode can 1 is caulked inward to form a lithium battery.The maximum outer diameter of this lithium battery is 9.5 mm.
The maximum total height was 20 ho. A lithium battery having the above configuration is designated as A.
別に上記リチウム電池Ａにおいて本発明により使用した
リチウム板２の代りに、角型のリチウム板２を使用した
も′の（リチウム量はＡと同重量にした）をリチウム電
池Ｂとする。Separately, a lithium battery B is prepared by using a rectangular lithium plate 2 instead of the lithium plate 2 used in the present invention in the lithium battery A (the amount of lithium is the same weight as A).
比較のため、上述したリチウム板２を使用しないことの
みが異なる従来のリチウム電池をＣとする。For comparison, C is a conventional lithium battery that differs only in that the lithium plate 2 described above is not used.
これらのリチウム電池Ａ、ＢおよびＣをそれぞれ予備放
電電流１ ｍＡで３時間放電した場合と、比較リチウム
電池Ｃを同じ放電電流で６時間放電した場合について、
各電池の温度６０℃での保存４０日後の開路電圧および
内部抵抗を調査した。その結果を下表第１表（こ示す。When each of these lithium batteries A, B, and C was discharged at a preliminary discharge current of 1 mA for 3 hours, and when the comparative lithium battery C was discharged at the same discharge current for 6 hours,
The open circuit voltage and internal resistance of each battery were investigated after 40 days of storage at a temperature of 60°C. The results are shown in Table 1 below.
第 １ 表 上記データは各電池５０イ闘の平均値である。Table 1 The above data is the average value of 50 tests for each battery.
上記実施例のリチウム電池の改変例として、含液材６に
有機電解質液を含浸させたものを使用せず、その代りに
セパレータ５を例えばポリプロピレン不織布で構成し、
これに有機電解質液を含浸させてもよい。As a modification of the lithium battery of the above embodiment, the liquid-containing material 6 impregnated with an organic electrolyte solution is not used, and instead, the separator 5 is made of, for example, a polypropylene nonwoven fabric,
This may be impregnated with an organic electrolyte solution.
以上のように本溌明によれば、リチウム電池を形成後の
予備放電処理時間および電池の容量損失を、従来のリチ
ウム電池ζこおける場合（こ比し半分にしても開路電圧
、内部抵抗の安定した電池が得られるすぐれた効果を有
する。As mentioned above, according to Honjomei, even if the pre-discharge processing time after forming a lithium battery and the capacity loss of the battery are halved compared to the conventional lithium battery (ζ), the open circuit voltage and internal resistance will still be It has an excellent effect of providing a stable battery.
第１図は本発明のリチウム電池における正極体製造の工
程を示す説明図であり、第２図は本発明によるリチウム
電池の一実施例の縦断面図である。
１は正極缶、２はリチウム板、３は正極合剤、４は正極
リング、５はセパレータ、６は含液材、７は負極リチウ
ム板、８はガスケット、９は封口板。
同 安 達 智ご−Ｔ
］１１．１ ”。
℃・二゛−」FIG. 1 is an explanatory diagram showing the steps of manufacturing a positive electrode body in a lithium battery of the present invention, and FIG. 2 is a longitudinal cross-sectional view of one embodiment of a lithium battery according to the present invention. 1 is a positive electrode can, 2 is a lithium plate, 3 is a positive electrode mixture, 4 is a positive electrode ring, 5 is a separator, 6 is a liquid-containing material, 7 is a negative electrode lithium plate, 8 is a gasket, and 9 is a sealing plate. Tomoko Adachi-T
]11.1 ”.℃・2゛-”
Claims (1)
質を使用したリチウム電池において、上記正極合剤と正
極缶の間に金属リチウムまたはリチウム合金を介在させ
たことを特徴とするリチウム電池。 ２、介在させたリチウムまたはリチウム合金が板または
箔である特許請求の範囲第１項記載のリチウム電池。 ３、リチウム合金が、鉛、カドミウム、ビスマスおよび
スズからなる群のうちの少なくとも１種を含むものであ
る特許請求の範囲第１項または第２項記載のリチウム電
池。[Claims] 1. A lithium battery using a negative electrode made of lithium, a positive electrode mixture, and an organic electrolyte, characterized in that metallic lithium or a lithium alloy is interposed between the positive electrode mixture and the positive electrode can. lithium battery. 2. The lithium battery according to claim 1, wherein the interposed lithium or lithium alloy is a plate or foil. 3. The lithium battery according to claim 1 or 2, wherein the lithium alloy contains at least one member of the group consisting of lead, cadmium, bismuth, and tin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60296900A JPS62154561A (en) | 1985-12-27 | 1985-12-27 | Lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60296900A JPS62154561A (en) | 1985-12-27 | 1985-12-27 | Lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62154561A true JPS62154561A (en) | 1987-07-09 |
Family
ID=17839612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60296900A Pending JPS62154561A (en) | 1985-12-27 | 1985-12-27 | Lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62154561A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0358872U (en) * | 1989-10-13 | 1991-06-10 | ||
| JP2007149484A (en) * | 2005-11-28 | 2007-06-14 | Matsushita Electric Ind Co Ltd | Flat battery |
| RU2583453C2 (en) * | 2014-08-28 | 2016-05-10 | Закрытое акционерное общество "Электроисточник" (ЗАО "Электроисточник") | Primary chemical current source |
-
1985
- 1985-12-27 JP JP60296900A patent/JPS62154561A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0358872U (en) * | 1989-10-13 | 1991-06-10 | ||
| JP2007149484A (en) * | 2005-11-28 | 2007-06-14 | Matsushita Electric Ind Co Ltd | Flat battery |
| RU2583453C2 (en) * | 2014-08-28 | 2016-05-10 | Закрытое акционерное общество "Электроисточник" (ЗАО "Электроисточник") | Primary chemical current source |
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