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

1990-11-29

1993-07-20

Evans, Geoffrey S.

Electric heating

Metal heating

For bonding with pressure

296231, 228901, B23K 1110

Patent

active

052295664

ABSTRACT:
Process for spot-welding a flexible welding board to at least one and preferably a battery cells to form a battery pack, such as a NiCad battery pack. The flexible welding board is a nickel alloy material, laminated to a polyester film by a co-extruded 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. 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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patent: 4778479 (1988-10-01), Romling et al.
patent: 4920019 (1990-04-01), Stoklosa et al.

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