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Abstract

The present invention provides an electrode assembly, which can be manufactured by alternately stacking cathode plates and anode plates while interposing a separator therebetween, and winding or folding the separator in one or both directions, and to a manufacturing method thereof. According to the invention, both sides or the lower sides of both edges of a cathode current collector is exposed to create a level difference between the edges and a cathode conductive layer, thereby forming a level-difference portion, and an adhesive is applied to the level-difference portion which is then adhered to a separator, whereby the thickness of the battery can be prevented from increasing due to the adhesive during the manufacture of the battery, and the assembly of the battery can be facilitated. Also, a level-difference portion may be formed at an anode current collector, thereby effectively preventing the thickness of the battery from being increased due to the build up of the adhesive. Thus, the performance of the battery can be prevented from being deteriorated due to the application of the adhesive, and the ability to be impregnated with an electrolytic solution can also be maintained intact.

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First Claim