Patent ID: 8080329

Claim:
An electric storage battery, comprising: an electrode assembly in a case, the electrode assembly including: an elongate pin; first electrode strip and a second electrode strip wound together to form a spiral roll, each electrode strip having inner and outer ends, the first electrode strip attached to the pin directly or via an interface material; the first electrode strip including a substrate having a first face and a second face, the first face having a coated portion coated by a coating having a coating thickness, the first face having an uncoated portion on which the coating is not positioned, the uncoated portion being at the inner end of the first electrode strip, the coating including an active material; a first insulating spacer positioned on at least a portion of the uncoated portion and/or on at least a portion of the interface material, the first insulating spacer in a space between the first face of the substrate and the second electrode strip; a separator in the space between the first face of the substrate and the second electrode strip; and the substrate is not present in the space between the first face of the substrate and the second electrode strip.