초록 ▼

A spirally coiled electrode assembly has positive and negative electrodes each including a web-like collector coated with an active material on opposite surfaces thereof, and separators disposed between the positive and negative electrodes. A plurality of rectangular leads extend from opposite sides

A spirally coiled electrode assembly has positive and negative electrodes each including a web-like collector coated with an active material on opposite surfaces thereof, and separators disposed between the positive and negative electrodes. A plurality of rectangular leads extend from opposite sides of the web-like collectors in directions perpendicular to a direction in which the positive and negative electrodes and the separators are wound. Positive and negative terminals are connected to the rectangular leads extending from the respective opposite sides of the web-like collectors. The spirally coiled electrode assembly, the rectangular leads, and the positive and negative terminals are housed in a cylindrical casing whose opposite ends are closed by respective caps. The positive and negative terminals are fixed to the caps, respectively.

대표청구항 ▼

[ What is claimed is:] [1.] A cylindrical secondary battery comprising a positive and a negative electrode, each electrode having a collector coated with an active material on opposite surfaces and a plurality of rectangular leads extending from one edge, said electrodes being wound with separators

[ What is claimed is:] [1.] A cylindrical secondary battery comprising a positive and a negative electrode, each electrode having a collector coated with an active material on opposite surfaces and a plurality of rectangular leads extending from one edge, said electrodes being wound with separators to form a spirally coiled electrode assembly having the electrodes spaced from each other by one of the separators and having leads for one electrode extending from one end and leads for the other electrode extending from another end of the assembly;positive and negative terminals secured to said rectangular leads extending from the respective opposite ends of the assembly;a cylindrical casing housing said spirally coiled electrode assembly, said rectangular leads, and said positive and negative terminals; anda pair of caps mounted on respective opposite ends of said cylindrical casing, and said positive and negative terminals being fixed to a respective cap.