H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 4/14 (2006.01) H01M 2/26 (2006.01) H01M 2/28 (2006.01) H01M 4/16 (2006.01) H01M 10/04 (2006.01) H01M 10/12 (2006.01)
Patent
CA 2083630
STORAGE BATTERY AND METHOD OF CONNECTING CASE SEALED TERMINALS TO INTERNAL ELECTRODE PLATES Abstract of the Disclosure 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 internal of the case 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 in the main case, and with 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. This zone is accordingly cleaned by the flux while the lugs are laterally supported with respect to one another by the glass beads. The case is subsequently closed by a polypropylene cover plate which is heat sealed thereto to form a substantially water tight assembly, but having amalgamation gas escape vent holes strategically located therein. The closed case is partially inserted in a tank containing a level of circulating cooling water supplied thereto without water leakage into the sealed case. With the polypropylene case being cooled by the circulated water to prevent heat damage thereto, 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 in a burn zone so that the lugs and strap metals fuse together. The battery is subsequently completed by the addition of electrolyte through the vent holes to saturate the mats and these vent holes are then sealed.
Crisler Stephen T.
Mix Renard E.
Crisler Stephen T.
General Motors Corporation
Gowling Lafleur Henderson Llp
Mix Renard E.
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