CABLE TYPE RECHARGEABLE BATTERY AND MANUFACTURING METHOD THEREOF

摘要

The present invention relates to a method for manufacturing a cable type rechargeable battery and to a cable type rechargeable battery manufactured by the same, in which the method comprises the steps of: preparing an electrode assembly which includes an internal current collector, a negative-electrode active material layer, a positive-electrode active material layer, and an electrolyte layer interposed between the negative-electrode active material layer and the positive-electrode active material layer, has a horizontal cross section of a predetermined shape, and is extended in the longitudinal direction; preparing a heat-shrink protective covering by forming an external current collector thin film on the inner surface of a heat-shrink tube; and inserting the electrode assembly into the heat-shrink protective covering and then heating the heat-shrink protective covering to be shrunk, thereby allowing the heat-shrunk protective covering to adhere closely to the outer surface of the electrode assembly. The manufacturing method of the present invention does not require a post-treatment process such as a drying process, thereby simplifying the manufacturing method and enabling continuous processing. In addition, the external current collector is attached inside the heat-shrink tube to increase close adhesion between the active material layer and the external current collector, so that it is possible to prevent deterioration of battery performance.