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ELECTRODE ASSEMBLY INCLUDING BI-CELL AND FULL-CELL AND SECONDARY BATTERY INCLUDING THE SAME

  • US 20170207481A1
  • Filed: 10/22/2015
  • Published: 07/20/2017
  • Est. Priority Date: 10/31/2014
  • Status: Active Grant
First Claim
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1. A stacked/folded type electrode assembly configured to have a structure in which a plurality of unit cells, each of which comprises a positive electrode having an electrode mixture comprising an electrode active material applied to a current collector, a negative electrode having an electrode mixture comprising an electrode active material applied to a current collector, and a separator disposed between the positive electrode and the negative electrode, is wound in a state of being arranged on a sheet type separation film, whereinthe unit cells comprise one full cell and three or more bi-cells,outermost unit cells of the electrode assembly are each configured such that an electrode forming an outside of the electrode assembly is configured as a single -sided electrode, in which no electrode mixture is applied to a surface of the current collector facing the outside of the electrode assembly, andthe single-sided electrodes are electrodes having the same polarity.

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