JPH0475627B2 - - Google Patents
Info
- Publication number
- JPH0475627B2 JPH0475627B2 JP59219051A JP21905184A JPH0475627B2 JP H0475627 B2 JPH0475627 B2 JP H0475627B2 JP 59219051 A JP59219051 A JP 59219051A JP 21905184 A JP21905184 A JP 21905184A JP H0475627 B2 JPH0475627 B2 JP H0475627B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- spacer
- sealing gasket
- lithium
- sealed 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims description 23
- 125000006850 spacer group Chemical group 0.000 claims description 19
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 12
- 239000003792 electrolyte Substances 0.000 claims description 12
- 229910052744 lithium Inorganic materials 0.000 claims description 12
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 claims description 10
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- -1 trifluoroethylene, tetrafluoroethylene Chemical group 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- MIZLGWKEZAPEFJ-UHFFFAOYSA-N 1,1,2-trifluoroethene Chemical group FC=C(F)F MIZLGWKEZAPEFJ-UHFFFAOYSA-N 0.000 claims description 2
- PYVHTIWHNXTVPF-UHFFFAOYSA-N F.F.F.F.C=C Chemical compound F.F.F.F.C=C PYVHTIWHNXTVPF-UHFFFAOYSA-N 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000006183 anode active material Substances 0.000 claims 2
- 239000004677 Nylon Substances 0.000 claims 1
- 239000004698 Polyethylene Substances 0.000 claims 1
- 238000010030 laminating Methods 0.000 claims 1
- QLOAVXSYZAJECW-UHFFFAOYSA-N methane;molecular fluorine Chemical compound C.FF QLOAVXSYZAJECW-UHFFFAOYSA-N 0.000 claims 1
- 229920001778 nylon Polymers 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- YBBRCQOCSYXUOC-UHFFFAOYSA-N sulfuryl dichloride Chemical compound ClS(Cl)(=O)=O YBBRCQOCSYXUOC-UHFFFAOYSA-N 0.000 claims 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 4
- KPZGRMZPZLOPBS-UHFFFAOYSA-N 1,3-dichloro-2,2-bis(chloromethyl)propane Chemical compound ClCC(CCl)(CCl)CCl KPZGRMZPZLOPBS-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 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
- 238000000034 method Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000002791 soaking 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
- 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 of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
-
- 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
Description
【発明の詳細な説明】
産業上の利用分野
本発明は陽極、陰極及びセパレータを積層して
なる電極群を電池缶に収納する際に、電池缶と電
池蓋間に介在するシール用ガスケツトにスペーサ
を一体化したものを使つて、電池の性能を安定さ
せ、かつ信頼性を向上させた密閉型電池に関す
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a spacer for a sealing gasket interposed between a battery can and a battery lid when an electrode group consisting of a stacked anode, a cathode, and a separator is housed in a battery can. This invention relates to a sealed battery that uses an integrated battery to stabilize battery performance and improve reliability.
従来の技術
一般に、陽極と陰極の間にセパレータを介在さ
せ、これを１個または複数個重ねて電池缶に収納
した電池は扁平形電池とよばれ、これの小さい電
池はコイン形電池と称されている。例えば、負極
にリチウム、正極に二酸化マンガンを用いる電池
は金属性の電池缶に二酸化マンガン電極を、一
方、リチウム電極は電池蓋にそれぞれ接触させ、
電解液であるプロピレンカーボネートと過塩素酸
リチウムの混合溶液を含むセパレータを両極間に
介在させた後、電池缶と電池蓋をポリプロピレン
材質のシール用ガスケツトでカシメて電池を製作
していた。陽極活物質に塩化チオニールとリチウ
ム四塩化アルミニウムを用いた場合でも同じ方法
で製作することができる。この場合、シール用ガ
スケツト材質としては３弗化または４弗化エチレ
ンが有効である。BACKGROUND TECHNOLOGY In general, a battery in which a separator is interposed between an anode and a cathode and one or more separators are stacked and stored in a battery can is called a flat battery, and a small battery of this type is called a coin battery. ing. For example, in a battery that uses lithium for the negative electrode and manganese dioxide for the positive electrode, the manganese dioxide electrode is placed in contact with the metal battery can, while the lithium electrode is placed in contact with the battery lid.
After interposing a separator containing a mixed solution of electrolyte propylene carbonate and lithium perchlorate between the two electrodes, the battery can and battery lid were caulked with a sealing gasket made of polypropylene to produce a battery. Even when thionyl chloride and lithium aluminum tetrachloride are used as the positive electrode active materials, it can be manufactured using the same method. In this case, ethylene trifluoride or ethylene tetrafluoride is effective as the sealing gasket material.
発明が解決しようとする課題
しかし、この種の電池を製作する上で問題な点
は金属性の電池缶と電池蓋をシール用ガスケツト
でカシメて一体化する時、電池としての厚みが一
定しないことである。すなわち、セパレータに電
解液を適量含ませた後カシメると、電池としての
厚みが一定しないため電解液がシール用ガスケツ
トと電池缶または電池蓋の間から漏れ、セパレー
タに含まれる電解液の量にバラツキが生じる。こ
のことは製作した電池の性能にバラツキを引き起
こし、ひいては信頼性を低下させることになる。
また、電解液の溢出を起こした電池は、良好な電
池に比べて引き続き液漏れを起こしやすい。特に
コイン型、ボタン型と呼ばれている小形の電池は
セパレータに含まれる電解液の量が非常に少ない
ので、微量の液漏れでも電池性能に及ぼす影響は
大である。Problems to be Solved by the Invention However, the problem with manufacturing this type of battery is that when the metal battery can and battery lid are swaged together using a sealing gasket, the thickness of the battery is not constant. It is. In other words, when the separator is crimped after soaking in an appropriate amount of electrolyte, the electrolyte leaks from between the sealing gasket and the battery can or battery lid because the thickness of the battery is not constant, causing the amount of electrolyte contained in the separator to decrease. Variations occur. This causes variations in the performance of the manufactured batteries, which in turn reduces reliability.
In addition, a battery that has experienced overflow of electrolyte is more likely to continue to leak than a battery that is in good condition. In particular, since the amount of electrolyte contained in the separator of small batteries called coin-type and button-type batteries is very small, even a small amount of liquid leakage has a large effect on battery performance.
課題を解決するための手段
そこで、本発明はこれらの課題を解決するため
に陽極、陰極及びセパレータを積層してなる電極
群を収納せる金属性の電池缶の開口端部と電池蓋
とをシール用ガスケツトを介してカシメ封口して
なる密閉型電池において、電極群の高さに相当す
る高さの筒状スペーサを電極群の側面部を覆うよ
うに配置し、このスペーサにシール用ガスケツト
を断面Ｔ字状に一体化させたシール用ガスケツト
兼スペーサを用いるものである。Means for Solving the Problems Therefore, in order to solve these problems, the present invention seals the open end of a metal battery can that houses an electrode group formed by stacking an anode, a cathode, and a separator and a battery lid. In a sealed battery that is caulked and sealed through a sealing gasket, a cylindrical spacer with a height corresponding to the height of the electrode group is arranged to cover the side surface of the electrode group, and the sealing gasket is attached to the cross section of the spacer. This uses a T-shaped integrated sealing gasket and spacer.
作 用
その結果、電池缶と電池蓋をシール用ガスケツ
ト兼スペーサのガスケツト部分でカシメて一体化
する時に、電池としての厚みが常に一定した状態
を維持し、従つて漏液現象もなく電解液の量のバ
ラツキがなくなつて電池性能が安定することにな
る。As a result, when the battery can and battery lid are crimped and integrated using the gasket part of the sealing gasket and spacer, the thickness of the battery always remains constant, and there is no leakage phenomenon and the electrolyte is not leaked. This eliminates variations in the amount and stabilizes battery performance.
実施例
以下、本発明の一実施例について図面を用いて
説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
第２図は陰極にリチウム、陽極にポリテトラフ
ルオロエチレンで結着されたカーボン極を用い、
ガラス繊維のセパレータに塩化チオニールとリチ
ウム四塩化アルミニウムを含ませて構成した従来
のリチウム電池である。１は金属性の電池缶で、
これには金網２が溶接されており、その上からリ
チウム電極３が金網２の網目の中にくい込むよう
に圧着されている。一方４は金属性の電池蓋で、
テフロンで結着されたカーボン極５を金網６に保
持させ、該金網６を電池蓋４に溶接している。７
はガラス繊維セパレータで、これに塩化チオニー
ルとリチウム四塩化アルミニウムを含ませた後、
シール用ガスケツト８を電池缶１の開口端部でカ
シメて密閉化を計つている。しかし、電解液の添
加量制御のバラツキ、カシメ時のシール用ガスケ
ツト８にかかる圧力のバラツキによる電池の厚さ
方向の変動による電解液の電池外への溢出という
問題が生じ、生産時の不良率が2.8％、長期間保
存ではさらに1.3％増えることがしばしばであつ
た。 Figure 2 uses lithium as the cathode and a carbon electrode bonded with polytetrafluoroethylene as the anode.
This is a conventional lithium battery composed of a glass fiber separator containing thionyl chloride and lithium aluminum tetrachloride. 1 is a metal battery can,
A wire mesh 2 is welded to this, and a lithium electrode 3 is crimped onto the wire mesh 2 so as to sink into the mesh of the wire mesh 2. On the other hand, 4 is a metal battery cover,
A carbon electrode 5 bound with Teflon is held on a wire mesh 6, and the wire mesh 6 is welded to the battery lid 4. 7
is a glass fiber separator, and after impregnating it with thionyl chloride and lithium aluminum tetrachloride,
A sealing gasket 8 is caulked at the open end of the battery can 1 to achieve airtight sealing. However, there is a problem that the electrolyte overflows to the outside of the battery due to variations in the thickness direction of the battery due to variations in the control of the amount of electrolyte added and variations in the pressure applied to the sealing gasket 8 during crimping, resulting in a high defect rate during production. was 2.8%, and often increased by an additional 1.3% during long-term storage.
第１図は本発明になるリチウム電池でシール用
ガスケツト兼スペーサ９を除いて、電池の構成は
第１図と同じである。シール用ガスケツト兼スペ
ーサ９はガスケツト部１０とスペーサ部１１をも
つており、スペーサ部１１は筒状で、電極群の側
面を覆うように配置さ、このスペーサ部にガスケ
ツト部１０が断面Ｔ字状に一体化されており、ガ
スケツト部１０は電解液の溢出防止、スペーサ部
１１は電池の厚さを一定にする役割をもつてい
る。 FIG. 1 shows a lithium battery according to the present invention, and the structure of the battery is the same as that shown in FIG. 1 except for a sealing gasket/spacer 9. The sealing gasket/spacer 9 has a gasket part 10 and a spacer part 11. The spacer part 11 is cylindrical and is arranged so as to cover the side surface of the electrode group. The gasket part 10 has the role of preventing the electrolyte from overflowing, and the spacer part 11 has the role of keeping the thickness of the battery constant.
このようなシール用ガスケツト兼スペーサ９を
もつ電池では、電解液の溢出による不良率が生産
時では従来電池の2.8％から0.7％に、長期間保存
では従来電池の1.3％から0.2％に減少させること
ができ、かつ、他の電池に適用した時の有効性を
も確認した。 In a battery having such a sealing gasket/spacer 9, the defect rate due to electrolyte overflow is reduced from 2.8% of conventional batteries to 0.7% during production, and from 1.3% of conventional batteries to 0.2% during long-term storage. We also confirmed its effectiveness when applied to other batteries.
第３図は負極にリチウム、陽極活物質に塩化チ
オニールを用いた従来電池と本発明になる電池か
らそれぞれ1000個ずつ抽出し、1mA／cm2の電流
密度で放電した時の放電特性のバラツキを示した
図であり、従来電池の変動幅15％に比べて本発明
になる電池の変動幅は５％以内と小さい。 Figure 3 shows the variation in discharge characteristics when 1000 cells were extracted from each of a conventional battery using lithium for the negative electrode and thionyl chloride for the positive electrode active material and a battery according to the present invention, and discharged at a current density of 1 mA/cm 2 . The fluctuation range of the battery according to the present invention is smaller, within 5%, compared to the 15% fluctuation range of the conventional battery.
発明の効果
以上、説明したように、本発明は電池の信頼性
向上に、また生産時及び保存時の不良率の低減に
有効であることから、工業的価値は大きくかつ技
術的にも新規性を有する。Effects of the Invention As explained above, the present invention is effective in improving the reliability of batteries and reducing the defective rate during production and storage, so it has great industrial value and is technically novel. has.
第１図は本発明になるリチウム電池の部分欠載
図、第２図は従来のリチウム電池の部分欠載図、
第３図は従来電池の放電特性のバラツキ範囲と本
発明になる電池の放電特性のバラツキ範囲を示し
た図である。
１は電池缶、３はリチウム電極、４は電池蓋、
５はカーボン極、７はセパレータ、９はシール用
ガスケツト兼スペーサ、１０はガスケツト部、１
１はスペーサ部。
FIG. 1 is a partially cut-out diagram of a lithium battery according to the present invention, FIG. 2 is a partially cut-out diagram of a conventional lithium battery,
FIG. 3 is a diagram showing the range of variation in the discharge characteristics of conventional batteries and the range of variation in the discharge characteristics of the battery according to the present invention. 1 is a battery can, 3 is a lithium electrode, 4 is a battery lid,
5 is a carbon electrode, 7 is a separator, 9 is a sealing gasket and spacer, 10 is a gasket part, 1
1 is the spacer part.
Claims (1)
極群を収納せる金属性の電池缶の開口端部と電池
蓋とをシール用ガスケツトを介してカシメ封口し
てなる密閉型電池において、電極群の高さに相当
する高さの筒状スペーサを電極群の側面部を覆う
ように配置し、このスペーサにシール用ガスケツ
トを断面Ｔ字状に一体化させたシール用ガスケツ
ト兼スペーサを用いることを特徴とする密閉型電
池。 ２ 陰極にリチウムを、陽極活物質に塩化チオニ
ールや塩化スルフリルなどオキシハライド物質を
用いる場合では、シール用ガスケツト兼スペーサ
の材質が３弗化エチレンまたは４弗化エチレンで
ある特許請求の範囲第１項記載の密閉型電池。 ３ 陰極にリチウムを、陽極活物質に二酸化マン
ガンまたはフツ化黒鉛などを用いる場合では、シ
ール用ガスケツト兼スペーサの材質が３弗化エチ
レン、４弗化エチレンまたはポリプロピレンであ
る特許請求の範囲第１項記載の密閉型電池。 ４ アルカリ電解液を用いる場合では、シール用
ガスケツト兼スペーサの材質がナイロン、ポリエ
チレン、ポリプロピレン、３弗化エチレンまたは
４弗化エチレンである特許請求の範囲第１項記載
の密閉型電池。[Scope of Claims] 1. A sealed battery formed by caulking and sealing the open end of a metal battery can housing an electrode group formed by laminating an anode, a cathode, and a separator and a battery lid via a sealing gasket. A sealing gasket/spacer in which a cylindrical spacer with a height corresponding to the height of the electrode group is arranged to cover the side surface of the electrode group, and a sealing gasket with a T-shaped cross section is integrated with this spacer. A sealed battery characterized by using. 2. In the case where lithium is used for the cathode and an oxyhalide substance such as thionyl chloride or sulfuryl chloride is used for the anode active material, the material of the sealing gasket and spacer is ethylene trifluoride or ethylene tetrafluoride. Claim 1 Sealed battery as described. 3. In the case where lithium is used for the cathode and manganese dioxide or graphite fluoride is used as the anode active material, the material of the sealing gasket/spacer is trifluoroethylene, tetrafluoroethylene, or polypropylene.Claim 1 Sealed battery as described. 4. The sealed battery according to claim 1, in which the material of the sealing gasket and spacer is nylon, polyethylene, polypropylene, trifluoroethylene, or tetrafluoroethylene when an alkaline electrolyte is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59219051A JPS6196654A (en) | 1984-10-18 | 1984-10-18 | Sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59219051A JPS6196654A (en) | 1984-10-18 | 1984-10-18 | Sealed battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6196654A JPS6196654A (en) | 1986-05-15 |
| JPH0475627B2 true JPH0475627B2 (en) | 1992-12-01 |
Family
ID=16729490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59219051A Granted JPS6196654A (en) | 1984-10-18 | 1984-10-18 | Sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6196654A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2582451Y2 (en) * | 1990-06-14 | 1998-10-08 | ソニー 株式会社 | Coin-shaped lithium battery |
| WO2023002769A1 (en) * | 2021-07-19 | 2023-01-26 | 株式会社村田製作所 | Alkaline battery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57194264U (en) * | 1981-06-04 | 1982-12-09 |
-
1984
- 1984-10-18 JP JP59219051A patent/JPS6196654A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6196654A (en) | 1986-05-15 |
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