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US 6,444,357 B1Granted
Non-aqueous electrolyte secondary battery
AssigneeNEC Tokin Corporation
InventorsChika Kambe, Kouichi Zama
Life of this patent
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Abstract
A plurality of slit-shaped space regions are provided on an anode active material layer on a front surface or a rear surface of an anode sheet so as to reach end planes to make it easy to inject an electrolyte into a scrolled body or a jelly roll of a non-aqueous electrolyte secondary battery through the slit-shaped space regions.
Claims10
A non-aqueous electrolyte secondary battery comprising:
- a scrolled body of an anode sheet and a cathode sheet with a pair of separator sheets sandwiched therebetween, said anode sheet being coated with a plurality of regions of anode active material separated by a plurality of slit-shaped space regions elongating in a width direction of said anode sheet, wherein each of said slit-shaped space regions is disposed so that an adjacent distance becomes narrower towards a center of said scrolled body, said cathode sheet being coated with cathode active material;
- a container housing said scrolled body and having anode and cathode terminals electrically connected to said anode and cathode sheets, respectively;
- and
- an organic non-aqueous electrolyte filling said scrolled body within said container such that said anode active materials are impregnated with said electrolyte through said slit-shaped space regions.
1 more element
Dependencies are inferred from the claim text.