Process and apparatus for spot-welding a flexible welding board to a battery cell
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United States of America Patent
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Jun 29, 1993
Issued Date -
N/A
app pub date -
May 22, 1992
filing date -
Nov 29, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Process for spot-welding a flexible bare backed welding board to at least one and preferably a plurality battery cells to form a battery pack, such as a NiCad battery pack. The flexible bare backed welding board is a nickel or other metal alloy material, laminated to a polyester film by a co-extruded or otherwise applied adhesive. The spot-welding is accomplished by one spot-welder, and preferably two spot-welders, which spot-weld in alternating time intervals so as to assure electrical and electromechanical contact with each end of the battery cells by the nickel alloy material. The spot-welding is by DC current and voltage or alternatively can be AC welded. The electrodes are small enough to form a configuration between the flexible circuit and the end of the battery cell. Three spot-welding electrodes would assume a triangular configuration. Four spot-welding electrodes would form a rectangular configuration.
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