Treatment of conductive feedthroughs for battery packaging
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United States of America Patent
Stats
-
Jul 31, 2001
Grant Date -
N/A
app pub date -
Mar 18, 1999
filing date -
Mar 18, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of forming a seal between a lead on a battery cell and flexible packaging enclosing the cell that comprises the steps of chemically cleaning at least a portion of a lead of a battery; roughening the surface of the portion of a lead to increase the surface area thereof; coating the entire periphery of the portion of a lead with a layer of a first polymeric material; the coating having a minimum thickness about equal to the thickness of the lead; positioning the portion of the lead between two flexible laminate sheets, the laminate sheets each having a layer of a second polymeric material, the laminate sheets being positioned to engage each other wherein the portion of the lead is disposed between the polymeric layers of the flexible laminate sheet; and applying sufficient heat and pressure to the flexible laminate sheets to soften the polymeric layers on the flexible laminate to cause the polymer layers to flow around and completely coat the layer of polymeric material on the lead.
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