JPH0778603A - Nonaqueous electrolyte battery - Google Patents
Nonaqueous electrolyte batteryInfo
- Publication number
- JPH0778603A JPH0778603A JP5247558A JP24755893A JPH0778603A JP H0778603 A JPH0778603 A JP H0778603A JP 5247558 A JP5247558 A JP 5247558A JP 24755893 A JP24755893 A JP 24755893A JP H0778603 A JPH0778603 A JP H0778603A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- plate
- gasket
- electrolyte battery
- nonaqueous electrolyte
- 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 abstract description 16
- JMMZCWZIJXAGKW-UHFFFAOYSA-N 2-methylpent-2-ene Chemical compound CCC=C(C)C JMMZCWZIJXAGKW-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229920000642 polymer Polymers 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 abstract description 16
- -1 polyethylene Polymers 0.000 abstract description 9
- 239000004698 Polyethylene Substances 0.000 abstract description 5
- 229920000573 polyethylene Polymers 0.000 abstract description 5
- 239000011888 foil Substances 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 2
- CKFRRHLHAJZIIN-UHFFFAOYSA-N cobalt lithium Chemical compound [Li].[Co] CKFRRHLHAJZIIN-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract description 2
- 229910002804 graphite Inorganic materials 0.000 abstract description 2
- 239000010439 graphite Substances 0.000 abstract description 2
- 229910001091 LixCoO2 Inorganic materials 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 238000003466 welding Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000004677 Nylon Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012982 microporous membrane Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 229910018871 CoO 2 Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920000098 polyolefin Polymers 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
- H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
-
- 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
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/193—Organic material
-
- 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
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
- H01M6/10—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with wound or folded electrodes
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、非水電解質電池に関す
るものである。FIELD OF THE INVENTION The present invention relates to a non-aqueous electrolyte battery.
【０００２】[0002]
【従来の技術とその課題】非水電解質電池は、水溶液系
の電池に比較して高電圧な点で優れている。しかし、電
池内に水分が浸入すると電池特性が著しく劣化するの
で、電池を気密封口することが非常に大切である。2. Description of the Related Art Non-aqueous electrolyte batteries are superior in high voltage as compared with aqueous solution type batteries. However, it is very important to hermetically seal the battery, because the characteristics of the battery are significantly deteriorated when water penetrates into the battery.
【０００３】金属溶接や樹脂溶着などの加熱工程をとも
なう封口方式は、クリンプ封口（かしめ封口）に比較し
て優れた封口信頼性を有する点で優れている。The sealing method involving a heating process such as metal welding or resin welding is superior in crimp sealing (caulking sealing) in that it has excellent sealing reliability.
【０００４】一般に電極端子を電池ケースと絶縁するた
めに樹脂ガスケットがよく用いられる。前記のような加
熱工程をともなう封口を行う場合には、樹脂ガスケット
に優れた耐熱性が要求される。そこで、レーザー溶接封
口式の角形ニッケル・カドミウム電池（水溶液系電池）
では、耐熱性に優れたナイロン樹脂がガスケットに用い
ている。しかし、ナイロン樹脂は、容易に水分を透過す
るので非水電解質電池に用いることはできない。Generally, a resin gasket is often used to insulate the electrode terminals from the battery case. In the case of performing the sealing with the heating process as described above, the resin gasket is required to have excellent heat resistance. Therefore, laser welding sealing type prismatic nickel-cadmium battery (aqueous solution battery)
Uses a nylon resin with excellent heat resistance for the gasket. However, since nylon resin easily permeates water, it cannot be used for a non-aqueous electrolyte battery.
【０００５】そこで、一般に非水電解質電池では、ポリ
プロピレンやポリエチレンなどのオレフィン系熱可塑性
樹脂をガスケットに用いている。しかし、これらは耐熱
性に欠けるので、前記のような加熱工程をともなうよう
な封口方式を用いた非水電解質電池に用いることはでき
ない。そのため、従来の非水電解質電池は、一般にクリ
ンプ封口を用いていた。Therefore, generally, in a non-aqueous electrolyte battery, an olefinic thermoplastic resin such as polypropylene or polyethylene is used as a gasket. However, since they lack heat resistance, they cannot be used for a non-aqueous electrolyte battery using a sealing method involving the above heating step. Therefore, the conventional non-aqueous electrolyte battery generally uses a crimp seal.
【０００６】このように従来の非水電解質電池は、ガス
ケットの耐熱性と水分透過性とが両立できなかったので
封口信頼性に優れた溶接式封口を用いることができなか
った。As described above, in the conventional non-aqueous electrolyte battery, the heat resistance and the water permeability of the gasket were not compatible with each other, so that the welded sealing having excellent sealing reliability could not be used.
【０００７】なお、ガラスシールを用いた場合には、溶
接封口を用いることができるが、ガラスシールは、衝撃
に脆いので電池の信頼性を低下させる欠点があった。し
たがって、樹脂ガスケット式で溶接封口を行えることが
求められていた。When a glass seal is used, a welded seal can be used, but the glass seal has a drawback that it deteriorates the reliability of the battery because it is fragile to impact. Therefore, it has been required to perform the welding sealing with the resin gasket type.
【０００８】[0008]
【課題を解決するための手段】本発明は、ガスケットを
介して固定された電極端子を備えた非水電解質電池にお
いて、該ガスケットがメチルペンテンポリマーからなる
ことを特徴とする。The present invention is characterized in that in a non-aqueous electrolyte battery having an electrode terminal fixed via a gasket, the gasket is made of methylpentene polymer.
【０００９】[0009]
【作用】メチルペンテンポリマー（別名ポリメチルペン
テン）は、結晶性のポリオレフィン系熱可塑性樹脂であ
り、優れた耐熱性能と低い水分透過性能を有する。した
がって、前記の非水電解質電池のガスケット材質として
最適である。FUNCTION The methylpentene polymer (also known as polymethylpentene) is a crystalline polyolefin thermoplastic resin and has excellent heat resistance and low moisture permeability. Therefore, it is optimal as a gasket material for the above non-aqueous electrolyte battery.
【００１０】メチルペンテンポリマーは、ポリプロピレ
ンやポリエチレンに比較して耐クリープ性においても優
れているので、ガスケット用材料として適している。Methyl pentene polymer is suitable as a gasket material because it is superior in creep resistance to polypropylene and polyethylene.
【００１１】[0011]
【実施例】以下に本発明の好適な実施例を示す。EXAMPLES Preferred examples of the present invention will be shown below.
【００１２】図１に本発明の実施例の電池（Ａ）の一部
欠損断面図を示す。本実施例の電池（Ａ）は、角形リチ
ウム二次電池であり、リベット式正極端子２がメチルペ
ンテンポリマー（三井石油化学製）のガスケット１を介
して矩形の封口板３にかしめ固定された構造になってい
る。封口板３は負極端子を兼ねる有底角筒状の電池ケー
ス４にレーザー溶接により気密接続されている。レーザ
ー溶接部を５に示す。レーザー溶接時には、ガスケット
１の近傍の封口板が瞬間的に約１２０℃になった。FIG. 1 shows a partially broken sectional view of a battery (A) of an embodiment of the present invention. The battery (A) of this embodiment is a prismatic lithium secondary battery, and has a structure in which a rivet type positive electrode terminal 2 is caulked and fixed to a rectangular sealing plate 3 via a gasket 1 of methylpentene polymer (manufactured by Mitsui Petrochemical). It has become. The sealing plate 3 is hermetically connected by laser welding to a battery case 4 in the shape of a square cylinder with a bottom and also serving as a negative electrode terminal. Laser welds are shown in 5. At the time of laser welding, the sealing plate near the gasket 1 instantaneously reached about 120 ° C.
【００１３】正極板は、厚さ２０μｍのアルミニウム箔
の両面にリチウムコバルト複合酸化物( Lix CoO2 ) を
主体としたペースト状活物質を塗布し乾燥、圧延後、切
断してなる帯状正極板６である。負極板は、厚さ１８μ
ｍの銅箔の両面に黒鉛を主体としたペーストを塗布し乾
燥、圧延後、切断してなる帯状負極板８である。The positive electrode plate is a strip-shaped positive electrode plate obtained by applying a paste-like active material mainly containing lithium cobalt composite oxide (Li x CoO 2 ) on both sides of an aluminum foil having a thickness of 20 μm, drying, rolling and cutting. It is 6. The negative electrode plate has a thickness of 18μ
A strip-shaped negative electrode plate 8 is obtained by applying a paste containing graphite as a main component to both surfaces of a copper foil of m, drying, rolling, and cutting.
【００１４】これらの正負極板が、ポリエチレン微多孔
膜セパレータ７を介して長円渦巻状に巻回されて電池発
電要素を形成している。正極板は、リード片９を介して
リベット式正極端子２に電気的に接続されている。この
ときリード片９や正極が負極板や電池ケースと接触しな
いようにリードカバー１０で絶縁している。負極板は、
接触により負極端子を兼ねた電池ケース４に電気的に接
続されている。These positive and negative electrode plates are wound in an elliptical spiral shape with a polyethylene microporous membrane separator 7 interposed therebetween to form a battery power generating element. The positive electrode plate is electrically connected to the rivet type positive electrode terminal 2 via the lead piece 9. At this time, the lead cover 9 is insulated so that the lead piece 9 and the positive electrode do not come into contact with the negative electrode plate and the battery case. The negative electrode plate is
By contact, it is electrically connected to the battery case 4 which also serves as the negative electrode terminal.
【００１５】ガスケットがナイロン樹脂である以外は、
本発明の電池（Ａ）と同じ電池を比較のための電池
（Ｂ）とする。Except that the gasket is nylon resin,
The same battery as the battery (A) of the present invention is used as a battery (B) for comparison.
【００１６】ガスケットがポリプロピレンである以外
は、本発明の電池（Ａ）と同じ電池を比較のための電池
（Ｃ）とする。A battery (C) for comparison is the same battery as the battery (A) of the present invention except that the gasket is polypropylene.
【００１７】上記電池（Ａ）、（Ｂ）、（Ｃ）をそれぞ
れ５０個ずつ試作し、４０℃、湿度９０％の環境下で１
００サイクル充放電した。サイクル条件は、充電が０．
２ＣｍＡで４．３Ｖ、放電が０．２ＣｍＡで２．７Ｖま
でおこなった。サイクル後、初期容量を１００％とした
場合の放電容量を測定し、目視によると液漏れ検査をお
こなった。その結果を表１に示す。Fifty batteries each of the above batteries (A), (B), and (C) were made as prototypes, and 1
It was charged and discharged for 00 cycles. The cycle condition is that charging is 0.
The discharge was performed up to 4.3 V at 2 CmA and to 2.7 V at 0.2 CmA. After the cycle, the discharge capacity when the initial capacity was set to 100% was measured, and the liquid leakage was visually inspected. The results are shown in Table 1.
【００１８】[0018]
【表１】 表１から明らかなように本発明の非水電解質電池（Ａ）
は、従来の電池（Ｂ），（Ｃ）に比較して、放電容量の
低下が少なく、液漏れもすくない。電池（Ｂ）の放電容
量が低下したのは、水分易透過性のナイロンをガスケッ
トに用いたために電池内に水分が浸透したことに起因す
るものである。また、電池（Ｃ）は、耐熱性に劣るポリ
プロピレンがレーザー溶接時に溶融したためにガスケッ
ト機能が低下して液漏れや容量低下を引き起こしたもの
である。[Table 1] As is clear from Table 1, the non-aqueous electrolyte battery (A) of the present invention
In comparison with the conventional batteries (B) and (C), the discharge capacity is less decreased and liquid leakage is less. The decrease in the discharge capacity of the battery (B) is due to the permeation of water into the battery due to the use of easily water-permeable nylon for the gasket. Further, in the battery (C), polypropylene having poor heat resistance was melted at the time of laser welding, so that the gasket function was deteriorated, causing liquid leakage and capacity reduction.
【００１９】[0019]
【発明の効果】上述のように、本発明の非水電解質電池
は、電池内への水分透過を効果的に抑制できる点で従来
の電池に比較して優れている。As described above, the non-aqueous electrolyte battery of the present invention is superior to the conventional battery in that water permeation into the battery can be effectively suppressed.
【図１】本発明の非水電解質電池を示した図。FIG. 1 is a diagram showing a non-aqueous electrolyte battery of the present invention.
１ メチルペンテンポリマー製のガスケット ２ リベット式正極端子 ３ 封口板 ４ 電池ケース ５ レーザー溶接部 ６ 帯状正極板 ７ ポリエチレン微多孔膜セパレータ ８ 帯状負極板 ９ リード片 １０ リードカバー 1 Methyl pentene polymer gasket 2 Rivet type positive electrode terminal 3 Sealing plate 4 Battery case 5 Laser welded part 6 Strip positive electrode plate 7 Polyethylene microporous membrane separator 8 Strip negative electrode plate 9 Lead piece 10 Lead cover
Claims (1)
備えた非水電解質電池において、該ガスケットはメチル
ペンテンポリマーからなることを特徴とする非水電解質
電池。1. A non-aqueous electrolyte battery provided with an electrode terminal fixed via a gasket, wherein the gasket is made of methylpentene polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5247558A JPH0778603A (en) | 1993-09-07 | 1993-09-07 | Nonaqueous electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5247558A JPH0778603A (en) | 1993-09-07 | 1993-09-07 | Nonaqueous electrolyte battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0778603A true JPH0778603A (en) | 1995-03-20 |
Family
ID=17165285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5247558A Pending JPH0778603A (en) | 1993-09-07 | 1993-09-07 | Nonaqueous electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0778603A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11260329A (en) * | 1998-03-10 | 1999-09-24 | Sanyo Electric Co Ltd | Nonaqueous electrolyte battery |
| KR100378009B1 (en) * | 1997-11-17 | 2003-06-09 | 주식회사 엘지화학 | Method for producing multi-layered separator |
| JP2011029167A (en) * | 2009-06-23 | 2011-02-10 | Dic Corp | Resin composition for gasket, manufacturing method therefor, and gasket for secondary battery |
-
1993
- 1993-09-07 JP JP5247558A patent/JPH0778603A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100378009B1 (en) * | 1997-11-17 | 2003-06-09 | 주식회사 엘지화학 | Method for producing multi-layered separator |
| JPH11260329A (en) * | 1998-03-10 | 1999-09-24 | Sanyo Electric Co Ltd | Nonaqueous electrolyte battery |
| JP2011029167A (en) * | 2009-06-23 | 2011-02-10 | Dic Corp | Resin composition for gasket, manufacturing method therefor, and gasket for secondary battery |
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