Process and apparatus for spot-welding a flexible welding board

Details Process and apparatus for spot-welding a flexible welding board Process and apparatus for spot-welding a flexible welding board

1992-05-22

1993-06-29

Evans, Geoffrey S.

Electric heating

Metal heating

For bonding with pressure

296231, 228901, B23K 1110

Patent

active

052236900

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.

REFERENCES:
patent: 2667526 (1954-01-01), Stumbock
patent: 3339169 (1967-08-01), Freeland
patent: 3558848 (1971-01-01), Width
patent: 4069079 (1978-01-01), Eggert
patent: 4253232 (1981-03-01), Bennett et al.
patent: 4778479 (1988-10-01), Romling et al.
patent: 4920019 (1990-04-01), Stoklosa et al.

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