Method of resistance welding thin elements

Details Method of resistance welding thin elements Method of resistance welding thin elements

1995-05-04

1997-01-14

Evans, Geoffrey S.

Electric heating

Metal heating

For bonding with pressure

219 561, 219 5622, 219 869, 219 87, 219 9121, B23K 1111

Patent

active

055936040

ABSTRACT:
A battery pack (30) is assembled with a flexible circuit board (38), a first tab (40), and a second tab (42). The flexible circuit board (38) has an exposed area of isolated conductor (46) which is located directly under the intersection of the first tab (40) and the second tab (42), a point where the two are resistance welded together (44). When a weld current is applied at this point (44), the isolated conductor area (46) acts as a current sink such that current flows primarily through the second (lower) tab (42). This method allows both tabs or elements to be of the same or similar thickness and electrical properties, and facilitates automated battery pack assembly.

REFERENCES:
patent: 2137909 (1938-11-01), Hagedorn
patent: 2300700 (1942-11-01), Porter et al.
patent: 3231710 (1966-01-01), Barnet et al.
patent: 3284606 (1966-11-01), Schroeppel
patent: 3462577 (1969-08-01), Helms et al.
patent: 3478190 (1969-11-01), Dawes
patent: 4920019 (1990-04-01), Stoklosa et al.
patent: 5298712 (1994-03-01), Alexandres

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