Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Plural cells
Patent
1991-12-19
1993-09-14
Kalafut, Stephen
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Plural cells
429161, 296234, 2281801, 228222, H01M 228
Patent
active
052447561
ABSTRACT:
In this invention, lead based battery terminal units are molded in a fluid tight manner into the main body of a polypropylene battery case so that only the outer ends of the terminal units are external to the case. The terminal units have elongated straps slotted to receive the projecting lugs integral with positive and negative lead based electrode plates, which are interleaved with one another and with glass mat separators. After the plates and separators are installed and the extending electrode plate lugs appropriately fitted in the slots of the straps, flux and glass beads are inserted in the void areas in a strap-lug amalgamation zone. The case is subsequently closed by a polypropylene cover plate which is heat sealed thereto to form a substantially water tight assembly. The closed case is partially inserted in a tank containing a level of circulating cooling water. With the case being cooled by the water a low voltage magnetic induction welding head assembly mounted within the tank can be electrically energized to provide a high frequency welding field that heats the strap and the lugs so that the lugs and strap metals fuse together. The battery is subsequently completed by the addition of electrolyte.
REFERENCES:
patent: 2326537 (1943-08-01), Hill
patent: 4237603 (1980-12-01), Crow
patent: 4800142 (1989-01-01), Bish et al.
U.S. Ser. No. 07/580,977 filed Sep. 12, 1990, "Bipolar Battery and Assembly Method", assigned to the assignee of the present invention. (now U.S. Pat. No. 5,106,708).
U.S. Ser. No. 07/753,495 filed Sep. 3, 1991, "Battery Construction and Method of Connecting Terminals to Electrodes", assigned to the assignee of the present invention.
Crisler Stephen T.
Mix Renard E.
General Motors Corporation
Kalafut Stephen
Plant Lawrence B.
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