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Battery management system and driving method thereof

  • US 20060226811A1
  • Filed: 04/04/2006
  • Published: 10/12/2006
  • Est. Priority Date: 04/07/2005
  • Status: Active Grant
First Claim
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1. A battery management system for controlling an operation of a secondary battery module comprising a plurality of unit batteries, the battery management system comprising:

  • sensor means for sequentially measuring respective voltages of the plurality of unit batteries;

    comparator means for comparing the respective voltages of the unit batteries to a cut-off voltage range and a recovery voltage range to determine if the respective voltages are within the cut-off voltage range and the recovery voltage range; and

    controller means for receiving comparison results from the comparator means, for cutting off the secondary battery module from an external device when at least one unit battery from among the plurality of unit batteries is out of the cutoff voltage range, and for coupling the secondary battery module to the external device when all of the unit batteries are within the recovery voltage range.

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