Stepped electrode assembly, secondary battery including the electrode assembly, and method of manufacturing the electrode assembly
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United States of America Patent
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Oct 30, 2018
Grant Date -
Dec 22, 2016
app pub date -
Feb 6, 2014
filing date -
Feb 8, 2013
priority date (Note) -
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Abstract
There is provided a stacked and folded type electrode assembly in which at least two first electrode units having a first area and at least two second electrode units having a second area smaller than the first area are wound and stacked together with a rectangular separator. The electrode assembly includes: a first electrode stack in which the first electrode units are stacked; a second electrode stack in which the second electrode units are stacked; and a stepped portion formed by an area difference between the first electrode stack and the second electrode stack, wherein two or more layers of the separator cover the stepped portion, and the separator has the same shape as the stepped portion.
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