Metallic film for manufacturing electrode assembly of lithium-ion-cell based battery used as energy source for driving motor of e.g. hybrid vehicle, has recesses lying above each other after winding stack such that lateral opening is formed

摘要

The metallic film (120) has recesses (150) e.g. V-shaped recesses, including distances relative to each other. The film has a rectangular shape with a large main expansion direction and a small auxiliary expansion direction, which is perpendicular to the main expansion direction. The recesses are provided on a side parallel to the main expansion direction. The recesses lie above each other after winding a film stack (100) with a non-conductive film (110) that is arranged between the metallic film and another metallic film (130), such that a lateral opening is formed in the wound film stack. Independent claims are also included for the following: (1) a method for manufacturing an electrode assembly (2) an electrode assembly (3) a battery cell.