Methods for assembling lead-acid batteries
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United States of America Patent
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Apr 30, 1996
Grant Date -
N/A
app pub date -
Oct 12, 1993
filing date -
Oct 12, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of fabricating a modular, recombinant lead-acid battery is provided for. The method includes providing a plurality of thermoplastic frames, including at least two frames which support electrochemically active plates. The frames are adapted to be stacked and welded together such that the plates are spaced apart from each other a predetermined distance. One or more separators also are provided. The separators have an uncompressed state in which their thickness is equal to or greater than the predetermined distance between plates and a compressed state. The frames and separators are stacked such that a separator is disposed between adjacent plates in its compressed state. The frames then are successively vibration welded together, again while the separator is in its compressed state. The separator has a predetermined thickness in its compressed state effective to reduce damage to the separator caused by abrasion of the separators by the plates during vibration welding. The separator also tends to assume its uncompressed state in the presence of electrolyte so that the separator contacts the plates upon completion of the battery.
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