JPS63178436A - Cylindrical nonaqueous electrolyte battery - Google Patents
Cylindrical nonaqueous electrolyte batteryInfo
- Publication number
- JPS63178436A JPS63178436A JP62010574A JP1057487A JPS63178436A JP S63178436 A JPS63178436 A JP S63178436A JP 62010574 A JP62010574 A JP 62010574A JP 1057487 A JP1057487 A JP 1057487A JP S63178436 A JPS63178436 A JP S63178436A
- Authority
- JP
- Japan
- Prior art keywords
- case
- battery
- internal pressure
- nonaqueous electrolyte
- increased
- 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
- 239000011255 nonaqueous electrolyte Substances 0.000 title claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 17
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000011149 active material Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 11
- 238000003466 welding Methods 0.000 abstract description 5
- 241000287531 Psittacidae Species 0.000 description 4
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- -1 polypropylene ring Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- WCVOGSZTONGSQY-UHFFFAOYSA-N 2,4,6-trichloroanisole Chemical compound COC1=C(Cl)C=C(Cl)C=C1Cl WCVOGSZTONGSQY-UHFFFAOYSA-N 0.000 description 1
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 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
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- LBVWYGNGGJURHQ-UHFFFAOYSA-N dicarbon Chemical compound [C-]#[C+] LBVWYGNGGJURHQ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QLOAVXSYZAJECW-UHFFFAOYSA-N methane;molecular fluorine Chemical compound C.FF QLOAVXSYZAJECW-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
- H01M50/56—Cup shaped terminals
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- 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
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は円筒型非水電解液電池に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to a cylindrical non-aqueous electrolyte battery.
従来の技術 近年、円筒型リチウム電池は、軽量、高電圧。Conventional technology In recent years, cylindrical lithium batteries are lightweight and high voltage.
高エネルギー密度、安定した峨池特性の点からカメラ電
源用途やメモリーバックアップ用途等に広く用いられる
ようになってきている。特に、一般市販用として樹脂ケ
ースに、２個のべ池を過電流防止の安全素子と共に収め
た形状の構成電池は、その伸びがめざましい。Due to its high energy density and stable characteristics, it has become widely used for camera power supply applications, memory backup applications, etc. In particular, the growth in the number of commercially available batteries, which consist of two batteries housed in a resin case together with a safety element to prevent overcurrent, has been remarkable.
以下、図面を参照しながら、従来の円筒型リチウム電池
について説明する。第２図は、一般的な円筒型リチウム
電池の断面図で、ｄは鉄にニッケルメッキを施した電池
ケース、ｊは負極リチウム、ｋはチタンを芯材とし、二
酸化マンガン、カーボンブランク、弗素樹脂バインダー
より成る正極板、ｎ ハホリｘ チレンの多孔質フィル
ム裂セパレータである。従来、電池ケースｄには、ケー
ス側面と底面の肉厚がほぼ等しいものが用いられていた
。Hereinafter, a conventional cylindrical lithium battery will be described with reference to the drawings. Figure 2 is a cross-sectional view of a typical cylindrical lithium battery, where d is a battery case made of iron with nickel plating, j is negative electrode lithium, k is a core made of titanium, manganese dioxide, carbon blank, and fluororesin. The positive electrode plate is made of a binder, and the porous film crack separator is made of n hahori x tyrene. Conventionally, a battery case d has been used in which the wall thickness of the case side surface and the bottom surface are approximately equal.
また、誤使用により電池内圧が上昇した場合に内圧を安
全に開放するために、ポリプロピレン環の封口板をクリ
ンプ絞めして封口していた。Furthermore, in order to safely release the internal pressure when the internal pressure of the battery increases due to misuse, the sealing plate of the polypropylene ring is sealed by crimping.
発明が解決しようとする問題点
しかしながら、従来のリチウム電池に用いられている電
池ケースにおいて、電池放電容量を増大させる目的でケ
ース内容積を増すため、あるいはケースのコストを下げ
るために、ケースの薄肉化を計った場合、ケース側厚を
、強度的に維持できる範囲で薄肉化をすると、底厚もそ
れに伴い薄肉化される。Problems to be Solved by the Invention However, in battery cases used for conventional lithium batteries, the case has been made thin in order to increase the internal volume of the case for the purpose of increasing battery discharge capacity or to reduce the cost of the case. If the thickness of the case side is reduced to the extent that strength can be maintained, the bottom thickness will also be reduced accordingly.
円筒型リチウム電池では、ケース底面および上部キャッ
プ部に構成電池の装造に当ってタブビンの取付のために
、溶接作業を行うことが多い。このため、ケースの底厚
を、０．３ ＪＩ８より薄くすると、溶接作業時にケー
ス穴開きの問題が生ずる。In the case of cylindrical lithium batteries, welding work is often performed on the bottom surface of the case and the upper cap part in order to attach tab bins when assembling the battery components. For this reason, if the bottom thickness of the case is made thinner than 0.3 JI8, the problem of making holes in the case occurs during welding work.
このため、ケースの薄肉化は、側面、底面とも、０．３
鵡が限界であった。Therefore, the thickness of the case can be reduced by 0.3 on both the sides and bottom.
The parrot was the limit.
また、円筒型リチウム電池では、誤使用、例えば充電や
、高温下にさらされた場合、電池内圧が異状に上昇する
ため、その内圧を安全に開放する機構が必要である。そ
のため従来、ポリプロピレン製の封口板を用いて内圧を
解放させたり、一部分が金属薄膜で構成された金属封口
板を用いて、内圧上昇時に、薄膜部分が破れることによ
り内圧解放を行う、というような機構が必要であった。Furthermore, when a cylindrical lithium battery is misused, for example when being charged or exposed to high temperatures, the internal pressure of the battery increases abnormally, so a mechanism is required to safely release the internal pressure. For this reason, conventional methods have been used to release the internal pressure using a sealing plate made of polypropylene, or by using a metal sealing plate partially made of a thin metal film, and when the internal pressure rises, the thin film part ruptures to release the internal pressure. A mechanism was needed.
本発明は、上記従来の欠点に鑑み、従来よりも円筒型リ
チウム電池のケース薄肉化を可能にするとともに、誤使
用時の電池内圧上昇を安全確実に解消するものである。In view of the above-mentioned conventional drawbacks, the present invention enables the case of a cylindrical lithium battery to be made thinner than the conventional case, and also safely and reliably eliminates the increase in battery internal pressure during misuse.
問題点を解決するための手段
この目的を達成するために、本発明の円筒型リチウム電
池では、電池ケースとしてその側面の肉厚が、底面の肉
厚よシも薄いケースを用いたものである。Means for Solving the Problems In order to achieve this object, the cylindrical lithium battery of the present invention uses a battery case whose side walls are thinner than the bottom wall. .
作 用
このような電池ケースは、底面の肉厚を０．３ ｍｌよ
り厚く、側面の肉厚はそれよりも薄く成形したケースを
用いている。そのため、ケース底面のスポット溶接時に
ケース穴開きの問題を生じさせることなく、電池内容積
の増大を計ることが出来、電池放電容量の増大が可能と
なった。Function: This battery case uses a case in which the bottom wall is thicker than 0.3 ml and the side walls are thinner. Therefore, the internal volume of the battery can be increased without creating a hole in the case when spot welding the bottom of the case, and the battery discharge capacity can be increased.
さらに、ケース側面の肉厚を０．１５ｍ程度あるいは、
それ以下にすると、電池誤使用時に、電池内圧が上昇し
た際に、封口板クリンプ部分のケースの一部分が、上昇
した内圧により押し広げられてクリンプが緩み、内圧を
解放することが出来、従来のような樹脂製封口板や、金
属薄膜部を備えた封口板は必要でなく、金属環の封目板
を使用することが可能となった。Furthermore, the wall thickness of the side of the case should be reduced to about 0.15m or
If the internal pressure of the battery rises when the battery is misused, a part of the case at the sealing plate crimp part will be pushed apart by the increased internal pressure, loosening the crimp, and releasing the internal pressure. It is now possible to use a metal ring sealing plate instead of a resin sealing plate or a sealing plate with a metal thin film portion.
実施例 以下、本発明を実施例で詳述する。Example Hereinafter, the present invention will be explained in detail with reference to Examples.
直径１７．０鵡、高さ３３．５鵡の円筒型二酸化マンガ
ンリチウム電池では、従来、ケース側面、底面の肉厚が
共に０．３１Ｂの鉄地にニッケルメッキを施したケース
を用いて構成していたが、第１図に示すように、ケース
底面の厚み０．３ ｍｓ、側面の厚み０．１５ｍものと
した。このことにより実質的な電池内容積にあたる封口
溝入れ部よシ下の体積は、従来の内径１５．７１１、高
さ２７．２鵡で内容積５２６５．７−に対し、ケースの
内径１６．ｏ鵡、高さ２７．２鵡で内容積５４６８．９
−になり、２ｏ３−（４３，８％）の内容積増を得るこ
とが出来た。A cylindrical manganese dioxide lithium battery with a diameter of 17.0mm and a height of 33.5mm has conventionally been constructed using a nickel-plated steel case with a case side and bottom wall thickness of 0.31B. However, as shown in Figure 1, the thickness of the bottom of the case was 0.3 ms, and the thickness of the sides was 0.15 m. As a result, the volume below the sealing groove, which is the actual internal volume of the battery, is 16.7 mm in inner diameter of the case, compared to the conventional case with an inner diameter of 15.71 mm and a height of 27.2 mm and an internal volume of 5265.7 mm. o Parrot, height 27.2 and internal volume 5468.9
-, and an increase in internal volume of 2o3- (43.8%) was achieved.
第１図中で、ｊの負極リチウムは、従来２３×２００Ｘ
０．２０Ｍのものを用いていたが本発明では２３Ｘ２１
０Ｘ０．２０ 鵡のものが使用可能になり、ｋの正極板
は、チタン芯材に二酸化マンガン：カーボンブランク、
テフロンバインダーを１００：１０：８の割合で混合し
たものをシート状に底形、圧延したものを用いた。従来
その大きさは２６Ｘ１９０Ｘ０．５０鵡であったが、本
発明では２６Ｘ２００Ｘ０．５１ ａｓのものが使用
可能となった。電解液にはプロピレンカーボネートとジ
メトキシエタンとを容積比で１；２に混合し、１．５モ
ル／ｌの濃度のＬ Ｉ ＣＩ Ｏ４を加えたものを使用
した。In Figure 1, the negative electrode lithium of j is conventionally 23×200×
0.20M was used, but in the present invention, 23X21
0X0.20 parrot is now available, and the positive electrode plate of k is made of titanium core material, manganese dioxide: carbon blank,
A Teflon binder mixed in a ratio of 100:10:8 was shaped into a sheet and rolled. Conventionally, the size was 26 x 190 x 0.50 as, but in the present invention, a size of 26 x 200 x 0.51 as can be used. The electrolytic solution used was a mixture of propylene carbonate and dimethoxyethane in a volume ratio of 1:2, to which L I CI O4 at a concentration of 1.5 mol/l was added.
その結果、第３図に示すように、パルス放電特性が向上
した。なお、放電パターンは９００ ｍＡで３秒間放電
、２７秒間休止を１サイクルとして２０’Ｃの温度下で
測定した。また、電池の充電を行ったところ、封目リン
プ部よシ上昇した内圧をうまく外部へ解放することが出
来た。As a result, as shown in FIG. 3, the pulse discharge characteristics were improved. The discharge pattern was measured at a temperature of 20'C, with one cycle consisting of a discharge at 900 mA for 3 seconds and a pause of 27 seconds. Also, when I charged the battery, I was able to successfully release the internal pressure that had risen through the sealing limp part to the outside.
さらに、直径１４．５１１、高さ３３．５Ｍのフッ化黒
鉛リチウム電池において、ケース底面、側面の肉厚が共
に０．３騙のものから、底面の厚み０．３鵡側面の厚み
０．１６鵡のものに変更した。その結果１４３−（”３
．９９１ ）の体積増が得られた。この例では、負極リ
チウム、正極にチタンを芯材とし、フン化黒鉛二カーボ
ンブランク：テフロンパインダーを重量比で１００：１
５：２０の割合で混合し、シート状に底形、圧延したも
のを用い、セパレートにポリプロピレン不織布を用いて
いる。電解液には先の実施例と同一のものを便用した。Furthermore, for a graphite fluoride lithium battery with a diameter of 14.511 mm and a height of 33.5 m, the bottom and side wall thicknesses of the case are both 0.3 mm, the bottom thickness is 0.3 mm, and the side wall thickness is 0.16 mm. I changed it to a parrot. The result is 143-(”3
．． A volume increase of 991 ) was obtained. In this example, the negative electrode is lithium, the positive electrode is made of titanium, and the weight ratio of fluorinated graphite dicarbon blank: Teflon binder is 100:1.
The mixture was mixed at a ratio of 5:20, shaped into a sheet, and rolled, and a polypropylene nonwoven fabric was used as a separate material. The same electrolyte as in the previous example was used.
その結果、第４図に示すようにパルス放電特性が向上し
た。なお、放電パターンは５００ ｍＡで４秒間放電、
３６秒間休止を１サイクルとし２゜°Ｃの温度下で測定
した。As a result, the pulse discharge characteristics were improved as shown in FIG. The discharge pattern was 500 mA for 4 seconds,
One cycle consisted of a pause of 36 seconds, and the measurement was carried out at a temperature of 2°C.
発明の効果
以上のように円筒型リチウム電池において、電池ケース
を従来の側面と底面の厚みが同じものより、側面の厚み
が底面よシも薄いケースを使用することによシ、放電特
性の向上が見られ、タブビン溶接作業時にも穴開きの問
題が生じなかった。Effects of the Invention As described above, the discharge characteristics of cylindrical lithium batteries are improved by using a battery case in which the sides are thinner than the bottom, compared to the conventional case in which the sides and bottom are the same thickness. was observed, and there were no problems with holes during tub welding work.
また、電池誤使用時の電池内圧上昇を、特殊な封目板を
使用することなく、安全に外部へ解放することも可能で
ある。Furthermore, it is also possible to safely release the internal pressure increase in the battery due to misuse of the battery to the outside without using a special sealing plate.
第１図は本発明の実施例におけるリチウム電池の断面図
、第２図は従来のリチウム電池の断面図、第３図、第４
図はパルス放電特性を示す図である。
ｄ・・・・・・電池ケース、ｊ・・・・・・負極リチウ
ム、ｋ・・・・・・正極板、ｎ・・・・・・セパレータ
。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第３
図
ノマルス力ｘ１じ門ゼ１
ブイクル数（ロ）
業 ４ 図
ブイクル数（団）Fig. 1 is a cross-sectional view of a lithium battery according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of a conventional lithium battery, Figs.
The figure is a diagram showing pulse discharge characteristics. d...Battery case, j...Negative electrode lithium, k...Positive electrode plate, n...Separator. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
Figure normal force x 1 jimonze 1 number of buikuru (ro) karma 4 number of buikuru (group)
Claims (2)
、非水電解液とよりなり、電池ケース側面の肉厚が底面
より薄いことを特徴とする円筒型非水電解液電池。(1) A cylindrical nonaqueous electrolyte battery consisting of a negative electrode made of a light metal such as lithium as an active material, a positive electrode, and a nonaqueous electrolyte, and characterized in that the side wall of the battery case is thinner than the bottom wall.
特許請求の範囲第１項記載の円筒型非水電解液電池。(2) The cylindrical non-aqueous electrolyte battery according to claim 1, wherein the thickness of the bottom surface of the battery case is thicker than 0.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62010574A JPS63178436A (en) | 1987-01-20 | 1987-01-20 | Cylindrical nonaqueous electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62010574A JPS63178436A (en) | 1987-01-20 | 1987-01-20 | Cylindrical nonaqueous electrolyte battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63178436A true JPS63178436A (en) | 1988-07-22 |
Family
ID=11754005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62010574A Pending JPS63178436A (en) | 1987-01-20 | 1987-01-20 | Cylindrical nonaqueous electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63178436A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5952568A (en) * | 1982-09-21 | 1984-03-27 | Nippon Paionikusu Kk | Manufacture of gas-permeable supporting body |
| JPS60180058A (en) * | 1984-02-28 | 1985-09-13 | Matsushita Electric Ind Co Ltd | Manufacture of battery and its can |
-
1987
- 1987-01-20 JP JP62010574A patent/JPS63178436A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5952568A (en) * | 1982-09-21 | 1984-03-27 | Nippon Paionikusu Kk | Manufacture of gas-permeable supporting body |
| JPS60180058A (en) * | 1984-02-28 | 1985-09-13 | Matsushita Electric Ind Co Ltd | Manufacture of battery and its can |
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