Lithium secondary battery
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United States of America Patent
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-
Aug 13, 2002
Grant Date -
N/A
app pub date -
Jul 12, 1999
filing date -
Jul 16, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A description is given of a thin flexible lithium-ion battery and of methods of the manufacture thereof. According to one of the methods, a negative electrode, a separator, and a positive electrode are provided with a pattern of macroscopic holes. After aligning the holes, the stack of the electrodes and the separator is placed on a structured polymer film having piles in the same pattern as the holes. After applying heat and pressure, the ends of the piles are flattened, and form a kind of rivets by which the electrodes and the separator are bonded together. This bonding ensures a good contact between the electrodes and an electrolyte in the separator.
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