Current collection through the ends of a spirally wound electrochemical cell by the use of a wound wire

Abstract

An electrochemical cell having an improved current connector. The electrochemical cell includes a plurality of positive and negative plates and a separator interposed therebetween; a first current connector for electrically connecting adjacent ones of said positive plates; and a second current connector for electrically connecting adjacent ones of said negative plates. Each of the first and second connectors includes a spring member defined by adjacent turns respectively having spaces therebetween, wherein the positive plates are partially disposed in the spaces of the first connector and the negative plates are partially disposed in the spaces of the second connector. The spring member may be a coiled member of a serpentine member. Alternatively, the current connector is a V-shaped member having the slots formed therein by etching or the like.

Dependencies are inferred from the claim text.