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Cable-type secondary battery

  • US 9,219,291 B2
  • Filed: 09/11/2013
  • Issued: 12/22/2015
  • Est. Priority Date: 03/11/2011
  • Status: Active Grant
First Claim
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1. A cable-type secondary battery comprising:

  • an inner electrode which includes at least one first polarity electrode having a first polarity current collector with a long and thin shape, whose cross-section perpendicular to its longitudinal direction is a circular, oval or polygonal form;

    a first polarity electrode active material layer formed on an outer surface of the first polarity current collector; and

    an electrolyte layer filled to surround the first polarity electrode active material layer, andat least one wire-type second polarity electrode which wholly surrounds the inner electrode and is winding around the exterior thereof.

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