METHOD AND SYSTEM FOR INSPECTION

PROBLEM TO BE SOLVED: To provide a method for inspecting a lamination film for defects such as a pin-hole or a flaw, the lamination film being formed of a metal layer and an insulating layer on each surface of the metal layer.SOLUTION: The present invention provides a method for inspecting a laminat...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MIURA AKINORI, MIZUTA MASATOMO, YOSHIDA KIYOSHI, KIMURA AIKA, KIRIAKI KENJI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method for inspecting a lamination film for defects such as a pin-hole or a flaw, the lamination film being formed of a metal layer and an insulating layer on each surface of the metal layer.SOLUTION: The present invention provides a method for inspecting a lamination film for defects, the lamination film being formed of a metal layer and an insulating layer on each surface of the metal layer. The method includes a voltage applying step and a detection step. The lamination films are bonded together so that an external member for containing power generating elements can be made, whereby a second battery is thus formed. The voltage applying step supplies conductive liquid to a surface of the lamination film and applies a voltage between a first electrode in contact with the surface of the lamination film and a second electrode in contact with an edge of a metal layer exposed from an end surface of the film in the secondary battery. The detection step detects the state of the conduction between the first and second electrodes. 【課題】金属層の両面に絶縁層が積層されてなる積層フィルムについて、ピンホールや傷等の欠陥を検査することができる検査方法を提供する。【解決手段】本発明の検査方法は、金属層の両面に絶縁層が積層されてなる積層フィルムの欠陥を検査する検査方法であって、電圧印加工程および検知工程を有し、積層フィルムが貼り合わされて形成される外装部材により発電要素を収容して二次電池が形成される。電圧印加工程は、二次電池を形成した状態において、積層フィルムの表面に導電性の液体を供給しつつ、当該液体が供給される積層フィルムの表面に接触する第1の電極と積層フィルムの端面から露出する金属層の端部に接触する第2の電極との間に電圧を印加する。検知工程は、電圧が印加される第1および第2の電極間の通電状態を検知する。【選択図】図2