CELL AND METHOD FOR FORMING THE SAME
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United States of America Patent
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Issued Date -
Nov 23, 2017
app pub date -
Jul 27, 2016
filing date -
May 20, 2016
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Abstract
The present application relates to a cell and a method for forming the same. The cell is formed by alternative coiling of anode electrode piece, cathode electrode piece and insulation film, section of cell is of round angle square structure with four vertex angels being round angles. The forming method includes: a) placing cell to be pressed, so that cell is located among top plane, bottom plane and two lateral planes, side of the cell perpendicular to thickness direction contacts bottom plane, certain distance exists between each lateral plane and cell; b) thermo-compressing cell by adopting thermo-compressing manner, so that top plane, bottom plane and two lateral planes press cell together, until section having round angle square structure with four vertex angels being round angles is formed; c) shaping to form cell.
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