Power controller for managing arrays of smart battery packs
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United States of America Patent
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N/A
Issued Date -
Dec 15, 2005
app pub date -
Jun 14, 2005
filing date -
Jun 14, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A power controller combines a multitude of smart battery packs into a single large bank, providing balanced charging and discharging. Battery packs are connected in parallel to form groups that may then be connected in series, while the specification limits for current and voltage of individual packs are maintained through microprocessor control of the battery pack charging circuits. The state of each pack is monitored, and charging of a pack at too high a charge is inhibited until the other packs in the group are sufficiently charged to allow balanced current-sharing. The state of each battery is broadcast on a bus to all processors so that each may determine whether there are enough packs of similar charge to safely source a load. The system preferably incorporates management firmware that allows user monitoring of the status of the power subsystem and all connected battery packs.
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