Device for managing battery packs by selectively monitoring and assessing the operative capacity of the battery modules in the pack
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United States of America Patent
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May 29, 2001
Grant Date -
N/A
app pub date -
Jul 3, 1997
filing date -
Jul 5, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a device for managing battery packs by measuring and monitoring the operating capacity of individual battery modules in a battery pack. A programmable logic controller directs the selective closing of relays to allow individual battery modules to be load-tested using a variable discharge load unit, without compromising useful battery pack capacity. A battery module whose useful capacity falls below a predefined threshold may be connected to a battery charger for replenishment and then electrically realigned with the remaining modules in the pack for continued operation. Alternatively, an alarm may be triggered which alerts the user that the module is due for replacement. This sequence of events is performed on all cells in the pack at a predetermined interval.
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