Non-aqueous electrolyte cell with spirally wound electrodes

摘要

The electrode assembly (1) is fabricated by spirally winding strips of positive and negative electrodes (2,3) separated from each other by a separator (4) so that the negative electrode (3) is disposed outside the positive electrode (2). An anode current collector (8) is joined to the negative electrode (3) closer to the spiral core than a point opposing to a winding end (2a) of the positive electrode (2). An insulating tape (20) for protecting the end (2a) of the positive electrode (2) is provided and a portion (20a,22) extends continuously or intermittently towards the spiral core of the electrode assembly (1) further than its inner portion (20b) covering the inner side of the positive electrode (2).