Stepwise electrode assembly having variously-shaped corner and secondary battery, battery pack and device comprising the same
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United States of America Patent
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Jun 20, 2017
Grant Date -
May 5, 2016
app pub date -
Nov 20, 2015
filing date -
May 29, 2012
priority date (Note) -
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Abstract
There is provided an electrode assembly having steps including: a first electrode stair including at least one first electrode unit; and a second electrode stair including at least one second electrode unit having an area different from that of the first electrode unit, wherein the first electrode stair and the second electrode stair are stacked to be adjacent, separated by at least one separator as a boundary therebetween and including one or more electrode laminates having steps formed by a difference between areas of the first electrode stair and the second electrode stair, and shapes of the corners of the first electrode stair and the second electrode stair having steps are different. There is also provided a secondary battery including the electrode assembly. Secondary batteries having various designs without restriction in shapes of corners of electrode units can be provided.
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