Monitoring battery packs
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United States of America Patent
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Jan 7, 2003
Issued Date -
N/A
app pub date -
Sep 25, 2000
filing date -
Jul 3, 1997
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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