SEALANT FOR TAB LEAD, TAB LEAD AND LITHIUM ION SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide a sealant for the tab lead of a laminated lithium ion secondary battery satisfying high reliability, insulation characteristics, and heat resistance of battery encapsulation entirely.SOLUTION: A sealant 1 for tab lead encapsulating the tab lead of a laminated lithium...

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Bibliographische Detailangaben
Hauptverfasser:	KATSUMURA NOBUHITO, SHIMADA RYOTARO, UENO TOMOHIRO, YAMAMICHI YUJI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BASIC ELECTRIC ELEMENTS CHEMISTRY DYES ELECTRICITY LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL PAINTS PERFORMING OPERATIONS POLISHES PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING USE OF MATERIALS AS ADHESIVES WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a sealant for the tab lead of a laminated lithium ion secondary battery satisfying high reliability, insulation characteristics, and heat resistance of battery encapsulation entirely.SOLUTION: A sealant 1 for tab lead encapsulating the tab lead of a laminated lithium ion secondary battery has a three layer structure consisting of a laminate adhesive layer 5, an insulation layer 4, and a lead conductor adhesive layer 3 co-extruded. The laminate adhesive layer 5 is composed of a polypropylene-based resin having a melting point of 140°C or less, and a load deflection temperature of 70°C or more. The insulation layer 4 is composed of a polypropylene-based resin having a melting point of 145°C or more, and a load deflection temperature of 100°C or more. The lead conductor adhesive layer 3 is composed of a polymer alloy of acid modified polypropylene having a melting point of 135°C or less, and a polypropylene-based resin. 【課題】電池封止の高信頼性、絶縁特性、および耐熱性を全て満たすラミネート型リチウムイオン二次電池のタブリード用シール材を提供する。【解決手段】ラミネート型リチウムイオン二次電池のタブリードを封止するタブリード用シール材１は、共押出されたラミネート接着層５、絶縁層４およびリード導体接着層３からなる３層構造を有する。ラミネート接着層５は、融点１４０℃以下、かつ荷重たわみ温度７０℃以上のポリプロピレン系樹脂からなり、絶縁層４は、融点１４５℃以上、かつ荷重たわみ温度１００℃以上のポリプロピレン系樹脂からなり、リード導体接着層３は、融点１３５℃以下の酸変性ポリプロピレンとポリプロピレン系樹脂とのポリマーアロイからなる。【選択図】図１