Non-aqueous electrolyte cell

Details Non-aqueous electrolyte cell Non-aqueous electrolyte cell

1997-08-13

1999-10-12

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

Plural concentric or single coiled electrode

429211, H01M 400

Patent

active

059652900

ABSTRACT:
A non-aqueous electrolyte cell has an electrode assembly including a negative electrode strip, a positive electrode strip having an active cathode material, and a separator. The positive electrode strip and the negative electrode strip are superposed with the separator therebetween and wound in a spiral. The negative electrode strip is disposed outside the positive electrode strip and has an outermost winding, a negative electrode strip winding end, and a penultimate winding. The positive electrode strip has an outermost winding terminating at a positive electrode strip winding end. An anode current collector contacts the negative electrode strip on the penultimate winding and is radially aligned with a portion of the outermost winding of the positive electrode strip. Insulating tape is bonded to an inside surface and an outside surface of the positive electrode strip extending from the positive electrode strip winding end and has an outer portion extending one of continuously and intermittently on the outer surface of the positive electrode strip a greater distance than an inner portion of the insulating tape covering the inner side of the positive electrode strip. In an embodiment, the outer portion of the insulating tape continuously extends from the positive electrode strip winding end to a point radially aligned with the anode current collector. Alternatively, an auxiliary insulating tape is bonded to an inside surface of the outermost winding of the negative electrode strip in place of the above outer portion of the insulating tape.

REFERENCES:
patent: 3298871 (1967-01-01), Binder et al.
patent: 4707421 (1987-11-01), McVeigh, Jr. et al.
patent: 5354629 (1994-10-01), Kuroda et al.
patent: 5458993 (1995-10-01), Terao et al.
patent: 5508122 (1996-04-01), Narukawa et al.

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